FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Floor, SN
Doudna, JA
AF Floor, Stephen N.
Doudna, Jennifer A.
TI Get in LINE: Competition for Newly Minted Retrotransposon Proteins at
the Ribosome
SO MOLECULAR CELL
LA English
DT Editorial Material
AB In this issue, Ahl et al. (2015) and Doucet et al. (2015) illuminate structural and functional features of substrates that promote integration of RNA molecules into the human genome by LINE retrotransposons, contributing to the similar to 50% of the human genome that has been colonized by mobile genetic elements.
C1 [Floor, Stephen N.; Doudna, Jennifer A.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Floor, Stephen N.; Doudna, Jennifer A.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
[Doudna, Jennifer A.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Doudna, Jennifer A.] Univ Calif Berkeley, Innovat Genom Initiat, Berkeley, CA 94720 USA.
[Doudna, Jennifer A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Doudna, JA (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, 229 Stanley Hall, Berkeley, CA 94720 USA.
EM doudna@berkeley.edu
OI Floor, Stephen/0000-0002-9965-9694
FU Howard Hughes Medical Institute
NR 11
TC 1
Z9 1
U1 3
U2 7
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 1097-2765
EI 1097-4164
J9 MOL CELL
JI Mol. Cell
PD DEC 3
PY 2015
VL 60
IS 5
BP 712
EP 714
DI 10.1016/j.molcel.2015.11.014
PG 4
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA DB1SX
UT WOS:000368290300002
PM 26638173
ER
PT J
AU Gong, Y
Michelini, MC
Gibson, JK
AF Gong, Yu
Michelini, Maria C.
Gibson, John K.
TI Electrospray production and collisional dissociation of
lanthanide/methylsulfonyl anion complexes: Sulfur dioxide anion as a
ligand
SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
LA English
DT Article
DE Collision induced dissociation; Lanthanide complexes; Methane sulfinate;
Sulfur dioxide anion; Density functional theory; Divalent lanthanides
ID GAS-PHASE URANYL; LANTHANIDE THERMODYNAMIC PREDICTIONS; QUADRUPOLE
ION-TRAP; METHOXYSULFINYL RADICALS; DENSITY FUNCTIONALS; AB-INITIO;
CHEMISTRY; ELEMENTS; METHYLSULFONYL; DECOMPOSITION
AB Gas-phase lanthanide-SO2 complexes, Ln(CH3SO2)(3)(SO2)(-), were produced by collision induced dissociation (CID) of Ln(CH3SO2)(4)(-) precursors prepared by electrospray ionization. For all lanthanides except Eu, CID of Ln(CH3SO2)(4)(-) resulted in CH3 loss to form Ln(CH3SO2)(3)(SO2)(-), which spontaneously react with O-2 to form Ln(CH3SO2)(3)(O-2)(-). CID of Eu(CH3SO2)(4)(-) produced only Eu(CH3SO2)(3)(-), with reduction from Eu(III) to Eu(II). For Ln =Yb and Sm, the Ln(CH3SO2)(4)(-) underwent neutral ligand loss to form Ln(CH3SO2)(3)(-), which reacted with O-2 to yield Ln(CH3SO2)(3)(O-2)(-), recovering the Ln(III) oxidation state. The CID results show parallels to condensed-phase Ln(3+)/Ln(2+) redox chemistry. Density functional theory (DFT) calculations on Ln(CH3SO2)(3)(SO2)- for Ln=La, Yb and Lu reveal that SO2 acts as a bidentate oxygen bound ligand for doublet ground-state La(CH3SO2)(3)(SO2)(-) and Lu(CH3SO2)(3)(SO2)(-), while the ground state for Yb(CH3SO2)(3)(SO2)- is an open-shell singlet with a monodentate SO2 ligand. Loss of CH3 is computed to be much more favorable than neutral ligand loss for La(CH3SO2)(4)(-) and Lu(CH3SO2)(4)(-), whereas both channels are comparable in energy for Yb(CH3SO2)(4)(-), in accord with the experiments. DFT results for fragmentation of Cu(CH3SO2)(2)(-) reveal that formation of the organometallic complex, Cu(CH3SO2)(CH3)(-), is energetically most favorable, in agreement with contrasting fragmentation pathways of copper and lanthanide complexes. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Gong, Yu; Gibson, John K.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Michelini, Maria C.] Univ Calabria, Dipartimento Chim, I-87030 Arcavacata Di Rende, Italy.
RP Gibson, JK (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
EM mc.michelini@unical.it; jkgibson@lbl.gov
FU U.S. Department of Energy, Office of Basic Energy Sciences, Heavy
Element Chemistry, at LBNL [DE-AC02-05CH11231]; Universita della
Calabria; Office of Science of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX The work of YG and JKG was fully supported by the U.S. Department of
Energy, Office of Basic Energy Sciences, Heavy Element Chemistry, at
LBNL under Contract No. DE-AC02-05CH11231. MCM acknowledges support by
the Universita della Calabria. This research used resources of the
National Energy Research Scientific Computing Center (NERSC), which is
supported by the Office of Science of the U.S. Department of Energy
under Contract No. DE-AC02-05CH11231.
NR 39
TC 1
Z9 1
U1 4
U2 13
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1387-3806
EI 1873-2798
J9 INT J MASS SPECTROM
JI Int. J. Mass Spectrom.
PD DEC 3
PY 2015
VL 392
BP 45
EP 52
DI 10.1016/j.ijms.2015.09.003
PG 8
WC Physics, Atomic, Molecular & Chemical; Spectroscopy
SC Physics; Spectroscopy
GA CY5IQ
UT WOS:000366441700008
ER
PT J
AU Cheng, S
Wang, J
Cai, Y
Loo, JA
Chen, H
AF Cheng, Si
Wang, Jun
Cai, Yi
Loo, Joseph A.
Chen, Hao
TI Enhancing performance of liquid sample desorption electrospray
ionization mass spectrometry using trap and capillary columns
SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
LA English
DT Article
DE Mass spectrometry; Desorption electrospray ionization; Desalting and
enrichment; Online enzyme digestion; Phosphoprotein
ID DESI-MS; PROTEIN DIGESTION; URINE; DRUGS; METABOLITES; ONLINE;
MICROEXTRACTION; PROTEOLYSIS; PEPTIDES; PHASE
AB Desorption electrospray ionization mass spectrometry (DESI-MS) is a recent and important advance in the field that has extensive applications in surface analysis of solid samples but has also been extended to analysis of liquid samples. The liquid sample DESI typically employs a piece of fused silica capillary to transfer liquid sample for ionization. In this study, we present the improvement of liquid sample DESI-MS by replacing the sample transfer silica capillary with a trap column filled with chromatographic stationary phase materials (e.g., C4, C18). This type of trap column/liquid sample DESI can be used for trace analysis of organics and biomolecules such as proteins/peptides (in nM concentration) in high salt content matrices. Furthermore, when the sample transfer capillary is modified with enzyme covalently bound on its inside capillary wall, fast digestion (<6 min) of proteins such as phosphoproteins can be achieved and the online digested proteins can be directly ionized using DESI with high sensitivity. The latter is ascribed to the freedom to select favorable spray solvent for the DESI analysis. Our data show that liquid sample DESI-MS with a modified sample transfer capillary has significantly expanded utility in bioanalysis. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Cheng, Si; Wang, Jun; Cai, Yi; Chen, Hao] Ohio Univ, Dept Chem & Biochem, Edison Biotechnol Inst, Ctr Intelligent Chem Instrumentat, Athens, OH 45701 USA.
[Wang, Jun] Jiangsu Police Inst, Dept Forens Sci, Nanjing 210031, Jiangsu, Peoples R China.
[Loo, Joseph A.] Univ Calif Los Angeles, Dept Chem & Biochem, David Geffen Sch Med, Dept Biol Chem, Los Angeles, CA 90095 USA.
[Loo, Joseph A.] Univ Calif Los Angeles, DOE Inst Genom & Prote, Los Angeles, CA 90095 USA.
RP Wang, J (reprint author), Jiangsu Police Inst, Dept Forens Sci, Nanjing 210031, Jiangsu, Peoples R China.
EM kwangjun@jspi.edu.cn; JLoo@chem.ucla.edu; chenh2@ohio.edu
FU NSF [CHE-1149367, CHE-1455554]; NNSFC [21328502]; National Institutes of
Health [R01GM103479]
FX This work was supported by NSF Career Award (CHE-1149367), NSF
(CHE-1455554), and NNSFC (21328502). JAL acknowledges support from the
National Institutes of Health (R01GM103479).
NR 51
TC 4
Z9 4
U1 6
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1387-3806
EI 1873-2798
J9 INT J MASS SPECTROM
JI Int. J. Mass Spectrom.
PD DEC 3
PY 2015
VL 392
BP 73
EP 79
DI 10.1016/j.ijms.2015.09.010
PG 7
WC Physics, Atomic, Molecular & Chemical; Spectroscopy
SC Physics; Spectroscopy
GA CY5IQ
UT WOS:000366441700013
PM 27239159
ER
PT J
AU Xiao, CX
Li, Z
Guthrey, H
Moseley, J
Yang, Y
Wozny, S
Moutinho, H
To, B
Berry, JJ
Gorman, B
Yan, YF
Zhu, K
Al-Jassimt, M
AF Xiao, Chuanxiao
Li, Zhen
Guthrey, Harvey
Moseley, John
Yang, Ye
Wozny, Sarah
Moutinho, Helio
To, Bobby
Berry, Joseph J.
Gorman, Brian
Yan, Yanfa
Zhu, Kai
Al-Jassimt, Mowafak
TI Mechanisms of Electron-Beam-Induced Damage in Perovskite Thin Films
Revealed by Cathodoluminescence Spectroscopy
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID SOLAR-CELLS; CH3NH3PBI3 PEROVSKITE; ORGANOLEAD TRIHALIDE; HALIDE
PEROVSKITES; SINGLE-CRYSTALS; PERFORMANCE; DIFFUSION; TRANSPORT;
LENGTHS; MORPHOLOGIES
AB Electron-beam-induced damages in methylammonium lead triiodide (MAPbI(3)) perovskite thin films were studied by cathodoluminescence (CL) spectroscopy. We find that high-energy electron beams can significantly alter perovskite properties through two distinct mechanisms: (1) defect formation caused by irradiation damage and (2) phase transformation induced by electron-beam heating. The former mechanism causes quenching and broadening of the excitonic peaks in CL spectra, whereas the latter results in new peaks with higher emission photon energy. The electron-beam damage strongly depends on the electron-beam irradiation conditions. Although CL is a powerful technique for investigating the electronic properties of perovskite materials, irradiation conditions should be carefully controlled to avoid any significant beam damage. In general, reducing acceleration voltage and probing current, coupled with low-temperature cooling, is more favorable for CL characterization and potentially for other scanning electron-beam-based techniques as well. We have also shown that the stability of perovskite materials under electron-beam irradiation can be improved by reducing defects in the original thin films. In addition, we investigated effects of electron-beam irradiation on formamidinium lead triiodide (FAPbI(3)) and CsPbI3 thin films. FAPbI(3) shows similar behavior as MAPbI(3), whereas CsPbI3 displays higher resistance to electron-beam damage than its organic inorganic hybrid counterparts. Using CsPbI3 as a model material, we observed nonuniform luminescence in different grains of perovskite thin films. We also discovered that black-to-yellow phase transformation of CsPbI3 tends to start from the junctions at grain boundaries.
C1 [Xiao, Chuanxiao; Li, Zhen; Guthrey, Harvey; Moseley, John; Yang, Ye; Moutinho, Helio; To, Bobby; Berry, Joseph J.; Zhu, Kai; Al-Jassimt, Mowafak] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Xiao, Chuanxiao; Moseley, John; Gorman, Brian] Colorado Sch Mines, Golden, CO 80401 USA.
[Wozny, Sarah] Univ New Orleans, New Orleans, LA 70148 USA.
[Yan, Yanfa] Univ Toledo, Toledo, OH 43606 USA.
RP Yan, YF (reprint author), Univ Toledo, 2801 W Bancroft St, Toledo, OH 43606 USA.
EM yanfa.yan@utoledo.edu; kai.zhu@nrel.gov; mowafak.aljassim@nrel.gov
RI Li, Zhen/E-9341-2015
OI Li, Zhen/0000-0003-1177-2818
FU U.S. Department of Energy [DE-AC36-08GO28308]; National Renewable Energy
Laboratory
FX This work was supported by the U.S. Department of Energy under Contract
DE-AC36-08GO28308 with the National Renewable Energy Laboratory.
NR 34
TC 17
Z9 17
U1 6
U2 63
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD DEC 3
PY 2015
VL 119
IS 48
BP 26904
EP 26911
DI 10.1021/acs.jpcc.5b09698
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CX9EA
UT WOS:000366006600013
ER
PT J
AU Skripov, AV
Skoryunov, RV
Soloninin, AV
Babanova, OA
Tang, WS
Stavila, V
Udovic, TJ
AF Skripov, Alexander V.
Skoryunov, Roman V.
Soloninin, Alexei V.
Babanova, Olga A.
Tang, Wan Si
Stavila, Vitalie
Udovic, Terrence J.
TI Anion Reorientations and Cation Diffusion in LiCB11H12 and NaCB11H12:
H-1, Li-7, and Na-23 NMR Studies
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID NUCLEAR-MAGNETIC-RESONANCE; PHASE-TRANSITIONS; NA2B12H12; LI2B12H12;
LIBH4
AB To study the dynamical properties of the monocarba-closo-dodecaborates LiCB11H12 and NaCB11H12 showing the exceptionally high ionic conductivities in the high-temperature disordered phases, we have measured the temperature dependences of the H-1, Li-7, and Na-23 NMR spectra and spin-lattice relaxation rates in these compounds below and above the phase transition points. It has been found that for both compounds the transition-from the low-T ordered to the high-T disordered phase (near 384 and 376 K for LiCB11H12 and NaCB11H12, respectively) is accompanied by a nearly 3 orders of magnitude increase in the reorientational jump rate of [CB11H12](-) anions. The results of our Li-7 and Na-23 NMR measurements indicate that the phase transitions from the low-T to the high-T phases of both LiCB11H12 and NaCB11H12 are also accompanied by a strong acceleration of translational diffusion of cations (Li+ or Na+). In the high-T phases of LiCB11H12 and NaCB11H12, the cation diffusion is characterized by low activation energies: 92 (7) and 152 (8) meV, respectively. These results are consistent with the high superionic conductivity in the disordered phases of LiCB11H12 and NaCB11H12; furthermore, they suggest that the enhanced reorientational mobility of large nearly spherical anions may facilitate the translational mobility of the cations.
C1 [Skripov, Alexander V.; Skoryunov, Roman V.; Soloninin, Alexei V.; Babanova, Olga A.] Russian Acad Sci, Ural Div, Inst Met Phys, Ekaterinburg 620990, Russia.
[Tang, Wan Si; Udovic, Terrence J.] NIST, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA.
[Tang, Wan Si] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
[Stavila, Vitalie] Sandia Natl Labs, Energy Nanomat, Livermore, CA 94551 USA.
RP Skripov, AV (reprint author), Russian Acad Sci, Ural Div, Inst Met Phys, S Kovalevskoi 18, Ekaterinburg 620990, Russia.
EM skripov@imp.uran.ru
RI Babanova, Olga/J-4821-2013; Skripov, Alexander/K-4525-2013; Soloninin,
Alexey/J-8580-2013;
OI Babanova, Olga/0000-0002-2422-3263; Skripov,
Alexander/0000-0002-0610-5538; Soloninin, Alexey/0000-0001-7127-9641;
Skoryunov, Roman/0000-0001-6158-9056
FU Russian Federal Agency of Scientific Organizations [01201463330];
Russian Foundation for Basic Research [15-03-01114]; Ural Branch of the
Russian Academy of Sciences [15-9-2-9]
FX This work was carried out within the assignment of the Russian Federal
Agency of Scientific Organizations (program "Spin" No. 01201463330),
supported in part by the Russian Foundation for Basic Research (Grant
No. 15-03-01114) and by the Grant No. 15-9-2-9 from the Ural Branch of
the Russian Academy of Sciences.
NR 17
TC 5
Z9 5
U1 5
U2 18
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD DEC 3
PY 2015
VL 119
IS 48
BP 26912
EP 26918
DI 10.1021/acs.jpcc.5b10055
PG 7
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CX9EA
UT WOS:000366006600014
ER
PT J
AU Han, CW
Iddir, H
Uzun, A
Curtiss, LA
Browning, ND
Gates, BC
Ortalan, V
AF Han, Chang Wan
Iddir, Hakim
Uzun, Alper
Curtiss, Larry A.
Browning, Nigel D.
Gates, Bruce C.
Ortalan, Volkan
TI Migration of Single Iridium Atoms and Tri-iridium Clusters on MgO
Surfaces: Aberration-Corrected STEM Imaging and Ab Initio Calculations
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID TRANSMISSION ELECTRON-MICROSCOPY; BEAM-INDUCED DEPOSITION; TOTAL-ENERGY
CALCULATIONS; WAVE BASIS-SET; GROWTH; MECHANISMS; CATALYST; GOLD;
PURIFICATION; NUCLEATION
AB To address the challenge of fast, direct atomic-scale visualization of the migration of atoms and clusters on surfaces, we used aberration-corrected scanning transmission electron microscopy (STEM) with high scan speeds (as little as similar to 0.1 s per frame) to visualize the migration of (1) a heavy atom (Ir) on the surface of a support consisting of light atoms, MgO(100), and (2) an Ir-3 cluster on MgO(110). Sequential Z-contrast images elucidate the surface transport mechanisms. Density functional theory (DFT) calculations provided estimates of the migration energy barriers and binding energies of the iridium species to the surfaces. The results show how the combination of fast-scan STEM and DFT calculations allow visualization and fundamental understanding of surface migration phenomena pertaining to supported catalysts and other materials.
C1 [Han, Chang Wan; Ortalan, Volkan] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA.
[Han, Chang Wan; Ortalan, Volkan] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA.
[Iddir, Hakim; Curtiss, Larry A.] Argonne Natl Lab, Div Mat Sci, Lemont, IL 60439 USA.
[Uzun, Alper] Koc Univ, Dept Chem & Biol Engn, TR-34459 Istanbul, Turkey.
[Browning, Nigel D.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA.
[Gates, Bruce C.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
RP Ortalan, V (reprint author), Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA.
EM vortalan@purdue.edu
OI Browning, Nigel/0000-0003-0491-251X; Uzun, Alper/0000-0001-7024-2900
FU U.S. Department of Energy [DE-AC05-76RL01830]; DOE BES Grant
[FG02-04ER15513]; DOE Office of Science User Facility
[DE-AC02-06CH11357]
FX Microscopy (Aberration-corrected FEI Titan STEM imaging) was conducted
at the Center for Nanophase Materials Sciences, which is a DOE Office of
Science User Facility; computer time at the Fusion computer facility,
Carbon cluster at the Nanoscience and Technology center at Argonne
National Laboratory under contract DE-AC02-06CH11357; and in part by the
Chemical Imaging LDRD Initiative at Pacific Northwest National
Laboratory, which is operated by Battelle Memorial Institute for the
U.S. Department of Energy under Contract No. DE-AC05-76RL01830. Work at
the University of California was supported by DOE BES Grant
FG02-04ER15513.
NR 34
TC 2
Z9 2
U1 12
U2 52
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD DEC 3
PY 2015
VL 6
IS 23
BP 4675
EP 4679
DI 10.1021/acs.jpclett.5b01884
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CX9ET
UT WOS:000366008500001
PM 26544015
ER
PT J
AU Yang, Y
Yang, MJ
Li, Z
Crisp, R
Zhu, K
Beard, MC
AF Yang, Ye
Yang, Mengjin
Li, Zhen
Crisp, Ryan
Zhu, Kai
Beard, Matthew C.
TI Comparison of Recombination Dynamics in CH3NH3PbBr3 and CH3NH3PbI3
Perovskite Films: Influence of Exciton Binding Energy
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID ORGANOMETAL HALIDE PEROVSKITES; LOW SURFACE RECOMBINATION; HYBRID
SOLAR-CELLS; RADIATIVE RECOMBINATION; AUGER RECOMBINATION;
SINGLE-CRYSTALS; CHARGE-CARRIERS; EFFICIENCY; PHOTODETECTORS;
SEMICONDUCTORS
AB Understanding carrier recombination in semiconductors is a critical component when developing practical applications. Here we measure and compare the monomolecular, bimolecular, and trimolecular (Auger) recombination rate constants of CH3NH3PbBr3 and CH3NH3PbI3. The monomolecular and bimolecular recombination rate constants for both samples are limited by trap-assisted recombination. The bimolecular recombination rate constant for CH3NH3PbBr3 is similar to 3.3 times larger than that for CH3NH3PbI3 and both are in line with that found for radiative recombination in other direct-gap semiconductors. The Auger recombination rate constant is 4 times larger in lead-bromide-based perovskite compared with lead-iodide-based perovskite and does not follow the reduced Auger rate when the bandgap increases. The increased Auger recombination rate, which is enhanced by Coulomb interactions, can be ascribed to the larger exciton binding energy, similar to 40 meV, in CH3NH3PbBr3 compared with similar to 13 meV in CH3NH3PbI3.
C1 [Yang, Ye; Yang, Mengjin; Li, Zhen; Crisp, Ryan; Zhu, Kai; Beard, Matthew C.] Natl Renewable Energy Lab, Chem & Nanosci Ctr, Golden, CO 80401 USA.
RP Beard, MC (reprint author), Natl Renewable Energy Lab, Chem & Nanosci Ctr, Golden, CO 80401 USA.
EM matt.beard@nrel.gov
RI Yang, Ye/D-5675-2015;
OI BEARD, MATTHEW/0000-0002-2711-1355
FU Division of Chemical Sciences, Geosciences and Biosciences, Office of
Basic Energy Sciences of U.S. Department of Energy through Solar
Photochemistry Program [DE-AC36-08GO28308]
FX This work was supported by the Division of Chemical Sciences,
Geosciences and Biosciences, Office of Basic Energy Sciences of the U.S.
Department of Energy through the Solar Photochemistry Program under
contract no. DE-AC36-08GO28308 to NREL.
NR 46
TC 39
Z9 39
U1 30
U2 140
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD DEC 3
PY 2015
VL 6
IS 23
BP 4688
EP 4692
DI 10.1021/acs.jpclett.5b02290
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CX9ET
UT WOS:000366008500003
PM 26551036
ER
PT J
AU Chen, B
Yang, MJ
Zheng, XJ
Wu, CC
Li, WL
Yan, YK
Bisquert, J
Garcia-Belmonte, G
Zhu, K
Priya, S
AF Chen, Bo
Yang, Mengjin
Zheng, Xiaojia
Wu, Congcong
Li, Wenle
Yan, Yongke
Bisquert, Juan
Garcia-Belmonte, Germa
Zhu, Kai
Priya, Shashank
TI Impact of Capacitive Effect and Ion Migration on the Hysteretic Behavior
of Perovskite Solar Cells
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID METHYLAMMONIUM LEAD IODIDE; ANOMALOUS HYSTERESIS; V HYSTERESIS;
DEPOSITION; CRYSTALLIZATION; POLARIZATION; SENSITIZERS; EMERGENCE;
LAYER; FILMS
AB In the past five years, perovskite solar cells (PSCs) based on organometal halide perovskite have exhibited extraordinary photovoltaic (PV) performance. However, the PV measurements of PSCs have been widely recognized to depend on voltage scanning condition (hysteretic current density voltage [J-V] behavior), as well as on voltage treatment history. In this study, we find that varied PSC responses are attributable to two causes. First, capacitive effect associated with electrode polarization provides a slow transient non-steady-state photocurrent that modifies the J-V response. Second, modification of interfacial barriers induced by ion migration can modulate charge-collection efficiency so that it causes a pseudo-steady-state photocurrent, which changes according to previous voltage conditioning. Both phenomena are strongly influenced by ions accumulating at outer interfaces, but their electrical and PV effects are different. The time scale for decay of capacitive current is on the order of seconds, whereas the slow redistribution of mobile ions requires several minutes.
C1 [Chen, Bo; Zheng, Xiaojia; Wu, Congcong; Yan, Yongke; Priya, Shashank] Virginia Tech, Ctr Energy Harvesting Mat & Syst, Blacksburg, VA 24061 USA.
[Yang, Mengjin; Zhu, Kai] Natl Renewable Energy Lab, Chem & Nanosci Ctr, Golden, CO 80401 USA.
[Li, Wenle] Virginia Tech, Chem Engn, Blacksburg, VA 24061 USA.
[Bisquert, Juan; Garcia-Belmonte, Germa] Univ Jaume 1, Inst Adv Mat INAM, Castellon de La Plana 12006, Spain.
[Bisquert, Juan] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah 21589, Saudi Arabia.
RP Chen, B (reprint author), Virginia Tech, Ctr Energy Harvesting Mat & Syst, Blacksburg, VA 24061 USA.
EM bochen09@vt.edu; bisquert@uji.es; kai.zhu@nrel.gov
RI Garcia-Belmonte, Germa/C-3719-2017; Faculty of, Sciences,
KAU/E-7305-2017;
OI Garcia-Belmonte, Germa/0000-0002-0172-6175; Zheng,
Xiaojia/0000-0002-3963-4073; Yang, Mengjin/0000-0003-2019-4298
FU U.S. Army [W15P7T-13-C-A910]; U.S. Department of Energy Sun Shot
Initiative under Next Generation Photovoltaics 3 program
[DE-FOA-0000990, DE-AC36-08-GO28308]; Generalitat Valenciana project
[PROMETEO/2014/020]; NSF I/UCRC: Center for Energy Harvesting Materials
and Systems through Fundamental Research Program
FX The authors gratefully acknowledge the financial support through the
U.S. Army under Contract No. W15P7T-13-C-A910. The work at the National
Renewable Energy Laboratory was supported by the U.S. Department of
Energy Sun Shot Initiative under the Next Generation Photovoltaics 3
program (DE-FOA-0000990) under Contract No. DE-AC36-08-GO28308. S.P. and
C.W. also appreciate support from the NSF I/UCRC: Center for Energy
Harvesting Materials and Systems through Fundamental Research Program.
The work at INAM-UJI was supported by Generalitat Valenciana project
PROMETEO/2014/020.
NR 45
TC 44
Z9 44
U1 17
U2 94
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD DEC 3
PY 2015
VL 6
IS 23
BP 4693
EP 4700
DI 10.1021/acs.jpclett.5b02229
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CX9ET
UT WOS:000366008500004
PM 26550850
ER
PT J
AU Zherebetskyy, D
Zhang, YJ
Salmeron, M
Wang, LW
AF Zherebetskyy, Danylo
Zhang, Yingjie
Salmeron, Miguel
Wang, Lin-Wang
TI Tolerance of Intrinsic Defects in PbS Quantum Dots
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; NANOCRYSTAL SOLIDS;
GAP STATES; BASIS-SET; DEVICE; STABILITY; SURFACE; METALS; FILMS
AB Colloidal quantum dots exhibit various defects and deviations from ideal structures due to kinetic processes, although their band gap frequently remains open and clean. In this Letter, we computationally investigate intrinsic defects in a real-size PbS quantum dot passivated with realistic Cl-ligands. We show that the colloidal intrinsic defects are ionic in nature. Unlike previous computational results, we find that even nonideal, atomically nonstoichiometric quantum dots have a clean band gap without in-gap-states provided that quantum dots satisfy electronic stoichiometry.
C1 [Zherebetskyy, Danylo; Zhang, Yingjie; Salmeron, Miguel; Wang, Lin-Wang] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Zhang, Yingjie] Univ Calif Berkeley, Appl Sci & Technol Grad Program, Berkeley, CA 94720 USA.
RP Wang, LW (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM lwwang@lbl.gov
FU Office of Science, the Office of Basic Energy Sciences, Materials
Sciences and Engineering Division of the U.S. Department of Energy (DOE)
through the organic/inorganic nanocomposite program [DE-AC02-05CH11231];
Office of Science of the DOE [DE-AC02-05CH11231, DE-AC05-00OR22725]
FX This work was financially supported by the Director, Office of Science,
the Office of Basic Energy Sciences, Materials Sciences and Engineering
Division of the U.S. Department of Energy (DOE) through the
organic/inorganic nanocomposite program under contract
DE-AC02-05CH11231. It used computational resources of the National
Energy Research Scientific Computing Center supported by the Office of
Science of the DOE under contract DE-AC02-05CH11231. Computations also
used resources of the Oak Ridge Leadership Computing Facility at the Oak
Ridge National Laboratory, which is supported by the Office of Science
of the DOE under contract no. DE-AC05-00OR22725, with computational time
allocated by the Innovative and Novel Computational Impact on Theory and
Experiment project. We thank Chris Barrett for editing the manuscript.
NR 38
TC 9
Z9 9
U1 6
U2 21
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD DEC 3
PY 2015
VL 6
IS 23
BP 4711
EP 4716
DI 10.1021/acs.jpclett.5b02202
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CX9ET
UT WOS:000366008500006
PM 26554672
ER
PT J
AU Mardis, KL
Webb, JN
Holloway, T
Niklas, J
Poluektov, OG
AF Mardis, Kristy L.
Webb, Jeremy N.
Holloway, Tarita
Niklas, Jens
Poluektov, Oleg G.
TI Electronic Structure of Fullerene Acceptors in Organic
Bulk-Heterojunctions: A Combined EPR and DFT Study
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID ZETA VALENCE QUALITY; GAUSSIAN-BASIS SETS; SOLAR-CELLS; CHARGE
SEPARATION; PARAMAGNETIC-RESONANCE; PULSED EPR; ATOMS LI; POLYMER;
DENSITY; SPECTROSCOPY
AB Organic photovoltaic (OPV) devices are a promising alternative energy source. Attempts to improve their performance have focused on the optimization of electron-donating polymers, while electron-accepting fullerenes have received less attention. Here, we report an electronic structure study of the widely used soluble fullerene derivatives PC61BM and PC71BM in their singly reduced state, that are generated in the polymer:fullerene blends upon light-induced charge separation. Density functional theory (DFT) calculations characterize the electronic structures of the fullerene radical anions through spin density distributions and magnetic resonance parameters. The good agreement of the calculated magnetic resonance parameters with those determined experimentally by advanced electron paramagnetic resonance (EPR) allows the validation of the DFT calculations. Thus, for the first time, the complete set of magnetic resonance parameters including directions of the principal g-tensor axes were determined. For both molecules, no spin density is present on the PCBM side chain, and the axis of the largest g-value lies along the PCBM molecular axis. While the spin density distribution is largely uniform for PC61BM, it is not evenly distributed for PC,BM.
C1 [Mardis, Kristy L.; Webb, Jeremy N.; Holloway, Tarita] Chicago State Univ, Dept Chem & Phys, Chicago, IL 60628 USA.
[Niklas, Jens; Poluektov, Oleg G.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Mardis, KL (reprint author), Chicago State Univ, Dept Chem & Phys, Chicago, IL 60628 USA.
EM kmardis@csu.edu; oleg@anl.gov
RI Niklas, Jens/I-8598-2016;
OI Niklas, Jens/0000-0002-6462-2680; Mardis, Kristy/0000-0003-2633-9304
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, Division of Chemical Sciences, Geosciences, and Biosciences at
Argonne National Laboratory [DE-AC02-06CH11357]; Illinois Space Grant
Consortium; NIH/NIGMS [R25 GM059218]; Army Research Laboratory
[W911NF-08-20039]
FX This material is based upon work supported by U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences, Division of Chemical
Sciences, Geosciences, and Biosciences, under Contract Number
DE-AC02-06CH11357 at Argonne National Laboratory (J.N. and O.P.G.).
K.L.M. was supported by the Illinois Space Grant Consortium. J.N.W. was
supported by the NIH/NIGMS (R25 GM059218), and T.H. was supported by the
Army Research Laboratory (Contract W911NF-08-20039).
NR 57
TC 2
Z9 2
U1 7
U2 44
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD DEC 3
PY 2015
VL 6
IS 23
BP 4730
EP 4735
DI 10.1021/acs.jpclett.5b02111
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CX9ET
UT WOS:000366008500010
PM 26569578
ER
PT J
AU Crisp, RW
Callahan, R
Reid, OG
Dolzhnikov, DS
Talapin, DV
Rumbles, G
Luther, JM
Kopidakis, N
AF Crisp, Ryan W.
Callahan, Rebecca
Reid, Obadiah G.
Dolzhnikov, Dmitriy S.
Talapin, Dmitri V.
Rumbles, Garry
Luther, Joseph M.
Kopidakis, Nikos
TI Photoconductivity of CdTe Nanocrystal-Based Thin Films: Te2- Ligands
Lead To Charge Carrier Diffusion Lengths Over 2 mu m
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID QUANTUM-DOT SOLIDS; SOLAR-CELLS; COLLOIDAL NANOCRYSTALS;
ELECTRICAL-PROPERTIES; SURFACE LIGANDS; CDSE; TRANSPORT; LAYER;
PHOTOVOLTAICS; PERFORMANCE
AB We report on photoconductivity of films of CdTe nanocrystals (NCs) using time-resolved microwave photoconductivity (TRMC). Spherical and tetrapodal CdTe NCs with tunable size-dependent properties are studied as a function of surface ligand (including inorganic molecular chalcogenide species) and annealing temperature. Relatively high carrier mobility is measured for films of sintered tetrapod NCs (4 cm(2)/(V s)). Our TRMC findings show that Te2- capped CdTe NCs show a marked improvement in carrier mobility (11 cm(2)/(V s)), indicating that NC surface termination can be altered to play a crucial role in charge-carrier mobility even after the NC solids are sintered into bulk films.
C1 [Crisp, Ryan W.; Callahan, Rebecca; Rumbles, Garry; Luther, Joseph M.; Kopidakis, Nikos] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Crisp, Ryan W.] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA.
[Callahan, Rebecca] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
[Reid, Obadiah G.] Univ Colorado, Renewable & Sustainable Energy Inst, Boulder, CO 80309 USA.
[Dolzhnikov, Dmitriy S.] Univ Chicago, Dept Chem, Chicago, IL 60637 USA.
RP Luther, JM (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM Joey.Luther@nrel.gov; Nikos.Kopidakis@nrel.gov
FU U.S. Department of Energy (DOE) SunShot program [DE-EE0005312]; Solar
Photochemistry Program of U.S. Department of Energy, Office of Science,
Basic Energy Sciences, Division of Chemical Sciences, Geosciences and
Biosciences [DE-AC36-08GO28308]
FX The work presented here is supported by the U.S. Department of Energy
(DOE) SunShot program under Award No. DE-EE0005312. The time-resolved
microwave conductivity experiment was developed and supported by the
Solar Photochemistry Program of the U.S. Department of Energy, Office of
Science, Basic Energy Sciences, Division of Chemical Sciences,
Geosciences and Biosciences, under Contract No. DE-AC36-08GO28308 to
NREL.
NR 39
TC 1
Z9 1
U1 14
U2 35
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD DEC 3
PY 2015
VL 6
IS 23
BP 4815
EP 4821
DI 10.1021/acs.jpclett.5b02252
PG 7
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CX9ET
UT WOS:000366008500024
PM 26571095
ER
PT J
AU Wang, Z
Kolesnikov, AI
Ito, K
Podlesnyak, A
Chen, SH
AF Wang, Zhe
Kolesnikov, Alexander I.
Ito, Kanae
Podlesnyak, Andrey
Chen, Sow-Hsin
TI Pressure Effect on the Boson Peak in Deeply Cooled Confined Water:
Evidence of a Liquid-Liquid Transition
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID INELASTIC NEUTRON-SCATTERING; NANOPOROUS SILICA MATRIX; SUPERCOOLED
WATER; AMORPHOUS ICE; GLASSY WATER; HEAVY-WATER; VIBRATIONAL-STATES;
PHASE-SEPARATION; DENSITY; DYNAMICS
AB The boson peak in deeply cooled water confined in nanopores is studied to examine the liquid-liquid transition (LLT). Below similar to 180 K, the boson peaks at pressures P higher than similar to 3.5 kbar are evidently distinct from those at low pressures by higher mean frequencies and lower heights. Moreover, the higher-P boson peaks can be rescaled to a master curve while the lower-P boson peaks can be rescaled to a different one. These phenomena agree with the existence of two liquid phases with different densities and local structures and the associated LLT in the measured (P, T) region. In addition, the P dependence of the librational band also agrees with the above conclusion.
C1 [Wang, Zhe; Ito, Kanae; Chen, Sow-Hsin] MIT, Dept Nucl Sci & Engn, Cambridge, MA 02139 USA.
[Kolesnikov, Alexander I.] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
[Podlesnyak, Andrey] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
RP Chen, SH (reprint author), MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
EM sowhsin@mit.edu
RI Podlesnyak, Andrey/A-5593-2013; Instrument, CNCS/B-4599-2012;
OI Podlesnyak, Andrey/0000-0001-9366-6319; Wang, Zhe/0000-0003-4103-0751
FU U.S. Department of Energy [DE-FG02-90ER45429]; Scientific User
Facilities Division, Office of Basic Energy Sciences, U.S. Department of
Energy
FX The research at MIT was supported by U.S. Department of Energy Grant No.
DE-FG02-90ER45429. The work at ORNL was supported by the Scientific User
Facilities Division, Office of Basic Energy Sciences, U.S. Department of
Energy. Z. W. thanks Dr. K.-H. Liu, the VISION team, and the sample
environment team at SNS, ORNL for their help and Dr. J.-L. Kuo for
valuable discussions.
NR 62
TC 4
Z9 4
U1 4
U2 25
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD DEC 3
PY 2015
VL 115
IS 23
AR 235701
DI 10.1103/PhysRevLett.115.235701
PG 6
WC Physics, Multidisciplinary
SC Physics
GA CX7KU
UT WOS:000365881500003
PM 26684125
ER
PT J
AU Lin, KH
Liao, BY
Chang, HW
Huang, SW
Chang, TY
Yang, CY
Wang, YB
Lin, YTK
Wu, YW
Tang, SL
Yu, HT
AF Lin, Kuei-Han
Liao, Ben-Yang
Chang, Hao-Wei
Huang, Shiao-Wei
Chang, Ting-Yan
Yang, Cheng-Yu
Wang, Yu-Bin
Lin, Yu-Teh Kirk
Wu, Yu-Wei
Tang, Sen-Lin
Yu, Hon-Tsen
TI Metabolic characteristics of dominant microbes and key rare species from
an acidic hot spring in Taiwan revealed by metagenomics
SO BMC GENOMICS
LA English
DT Article
ID TATUN-VOLCANO-GROUP; AUTOTROPHIC CARBON FIXATION; RIBOSOMAL-RNA GENE;
SP-NOV; METALLOSPHAERA-SEDULA; COMMUNITY STRUCTURE; NORTHERN TAIWAN;
ACIDITHIOBACILLUS-CALDUS; TETRATHIONATE HYDROLASE; HYDROTHERMAL SPRINGS
AB Background: Microbial diversity and community structures in acidic hot springs have been characterized by 16S rRNA gene-based diversity surveys. However, our understanding regarding the interactions among microbes, or between microbes and environmental factors, remains limited.
Results: In the present study, a metagenomic approach, followed by bioinformatics analyses, were used to predict interactions within the microbial ecosystem in Shi-Huang-Ping (SHP), an acidic hot spring in northern Taiwan. Characterizing environmental parameters and potential metabolic pathways highlighted the importance of carbon assimilatory pathways. Four distinct carbon assimilatory pathways were identified in five dominant genera of bacteria. Of those dominant carbon fixers, Hydrogenobaculum bacteria outcompeted other carbon assimilators and dominated the SHP, presumably due to their ability to metabolize hydrogen and to withstand an anaerobic environment with fluctuating temperatures. Furthermore, most dominant microbes were capable of metabolizing inorganic sulfur-related compounds (abundant in SHP). However, Acidithiobacillus ferrooxidans was the only species among key rare microbes with the capability to fix nitrogen, suggesting a key role in nitrogen cycling. In addition to potential metabolic interactions, based on the 16S rRNAs gene sequence of Nanoarchaeum-related and its potential host Ignicoccus-related archaea, as well as sequences of viruses and CRISPR arrays, we inferred that there were complex microbe-microbe interactions.
Conclusions: Our study provided evidence that there were numerous microbe-microbe and microbe-environment interactions within the microbial community in an acidic hot spring. We proposed that Hydrogenobaculum bacteria were the dominant microbial genus, as they were able to metabolize hydrogen, assimilate carbon and live in an anaerobic environment with fluctuating temperatures.
C1 [Lin, Kuei-Han; Chang, Hao-Wei; Huang, Shiao-Wei; Wang, Yu-Bin; Lin, Yu-Teh Kirk; Yu, Hon-Tsen] Natl Taiwan Univ, Dept Life Sci, Taipei 10617, Taiwan.
[Liao, Ben-Yang; Chang, Ting-Yan] Natl Hlth Res Inst, Inst Populat Hlth Sci, Div Biostat & Bioinformat, Zhunan Town 35053, Miaoli County, Taiwan.
[Chang, Hao-Wei] Washington Univ, Div Biol & Biomed Sci, Mol Microbiol & Microbial Pathogenesis Program, St Louis, MO 63130 USA.
[Yang, Cheng-Yu; Tang, Sen-Lin] Acad Sinica, Biodivers Res Ctr, Taipei 11529, Taiwan.
[Wang, Yu-Bin] Acad Sinica, Inst Informat Sci, Taipei 11529, Taiwan.
[Lin, Yu-Teh Kirk] Natl Taiwan Univ, Inst Ecol & Evolutionary Biol, Taipei 10617, Taiwan.
[Wu, Yu-Wei] Joint BioEnergy Inst, Emeryville, CA 94608 USA.
[Wu, Yu-Wei] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Yu, Hon-Tsen] Natl Taiwan Univ, Degree Program Genome & Syst Biol, Taipei 10617, Taiwan.
[Yu, Hon-Tsen] Acad Sinica, Taipei 10617, Taiwan.
RP Tang, SL (reprint author), Acad Sinica, Biodivers Res Ctr, Taipei 11529, Taiwan.
EM sltang@gate.sinica.edu.tw; ayu@ntu.edu.tw
FU National Science Council of Taiwan, ROC [95-2627-M-002-004,
97-2627-M-002-001]; U. S. Department of Energy, Office of Science,
Office of Biological and Environmental Research [DE-AC02-05CH11231]
FX Hon-Tsen Yu received financial support from the National Science Council
of Taiwan, ROC (95-2627-M-002-004 and 97-2627-M-002-001). Authors
acknowledge advice from Li-Hung Lin and Hsiao-Pei Lu regarding sample
collection and data analyses. This work was part of the DOE Joint
BioEnergy Institute (http://www.jbei.org) supported by the U. S.
Department of Energy, Office of Science, Office of Biological and
Environmental Research, through contract DE-AC02-05CH11231 between
Lawrence Berkeley National Laboratory and the U. S. Department of
Energy. The United States Government retains and the publisher, by
accepting the article for publication, acknowledges that the United
States Government retains a non-exclusive, paid-up, irrevocable,
world-wide license to publish or reproduce the published form of this
manuscript, or allow others to do so, for United States Government
purposes.
NR 71
TC 2
Z9 2
U1 3
U2 20
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1471-2164
J9 BMC GENOMICS
JI BMC Genomics
PD DEC 3
PY 2015
VL 16
AR 1029
DI 10.1186/s12864-015-2230-9
PG 16
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA CX6XF
UT WOS:000365844300001
PM 26630941
ER
PT J
AU Quaglioni, S
AF Quaglioni, Sofia
TI NUCLEAR PHYSICS Close encounters of the alpha kind
SO NATURE
LA English
DT Editorial Material
ID CHIRAL LAGRANGIANS; FORCES
C1 [Quaglioni, Sofia] Lawrence Livermore Natl Lab, Nucl & Chem Sci Div, Phys & Life Sci Directorate, Livermore, CA 94551 USA.
RP Quaglioni, S (reprint author), Lawrence Livermore Natl Lab, Nucl & Chem Sci Div, Phys & Life Sci Directorate, Livermore, CA 94551 USA.
EM quaglioni1@llnl.gov
NR 12
TC 1
Z9 1
U1 1
U2 6
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
EI 1476-4687
J9 NATURE
JI Nature
PD DEC 3
PY 2015
VL 528
IS 7580
BP 42
EP 43
PG 2
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA CX3NO
UT WOS:000365606000042
PM 26632583
ER
PT J
AU Tuttle, BR
Alhassan, SM
Pantelides, ST
AF Tuttle, Blair R.
Alhassan, Saeed M.
Pantelides, Sokrates T.
TI Large excitonic effects in group-IV sulfide monolayers
SO PHYSICAL REVIEW B
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; BASIS-SET; MOS2; GESE
AB Large exciton binding energies are a distinguishing feature of two-dimensional semiconductors because of reduced screening, potentially leading to unique optoelectronic applications. Here we use electronic structure methods to calculate the properties of a two-dimensional material class: group-IV monosulfides including SiS, GeS, and SnS. Bulk SiS is predicted to be a metastable layered material. Quasiparticle excitations are calculated with the G(0)W(0) method and the Bethe-Salpeter equation is are used to include electron-hole interactions. For monolayers, strongly bound excitons are found below the quasiparticle absorption edge. The predicted excitonic binding energies are as high as 0.7 eV. Due to large excitonic effects, these group-IV sulfide monolayers have great potential for nanoscale optoelectronic applications.
C1 [Tuttle, Blair R.; Pantelides, Sokrates T.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
[Tuttle, Blair R.] Penn State Behrend, Dept Phys, Erie, PA 16563 USA.
[Alhassan, Saeed M.] Petr Inst, Dept Chem Engn, Abu Dhabi, U Arab Emirates.
[Pantelides, Sokrates T.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Tuttle, BR (reprint author), Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
OI Alhassan, Saeed/0000-0002-5148-3255
FU Gas Subcommittee Research and Development under Abu Dhabi National Oil
Company (ADNOC); McMinn Endowment at Vanderbilt University
FX This work was supported in part by the Gas Subcommittee Research and
Development under Abu Dhabi National Oil Company (ADNOC) and by the
McMinn Endowment at Vanderbilt University. Calculations were performed
in part on the Penn State Lion X supercomputers.
NR 36
TC 4
Z9 4
U1 8
U2 43
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD DEC 3
PY 2015
VL 92
IS 23
AR 235405
DI 10.1103/PhysRevB.92.235405
PG 6
WC Physics, Condensed Matter
SC Physics
GA CX5YT
UT WOS:000365779100002
ER
PT J
AU Wang, LL
Johnson, DD
Tringides, MC
AF Wang, Lin-Lin
Johnson, Duane D.
Tringides, Michael C.
TI C-60-induced Devil's Staircase transformation on a Pb/Si(111) wetting
layer
SO PHYSICAL REVIEW B
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; ELECTRON-GAS; C-60
AB Density functional theory is used to study structural energetics of Pb vacancy cluster formation on C-60/Pb/Si(111) to explain the unusually fast and error-free transformations between the "Devil's Staircase" (DS) phases on the Pb/Si(111) wetting layer at low temperature (similar to 110 K). The formation energies of vacancy clusters are calculated in C-60/Pb/Si(111) as Pb atoms are progressively ejected from the initial dense Pb wetting layer. Vacancy clusters larger than five Pb atoms are found to be stable with seven being the most stable, while vacancy clusters smaller than five are highly unstable, which agrees well with the observed ejection rate of similar to 5 Pb atoms per C-60. The high energy cost (similar to 0.8 eV) for the small vacancy clusters to form indicates convincingly that the unusually fast transformation observed experimentally between the DS phases, upon C-60 adsorption at low temperature, cannot be the result of single-atom random walk diffusion but of correlated multi-atom processes.
C1 [Wang, Lin-Lin; Johnson, Duane D.; Tringides, Michael C.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Johnson, Duane D.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
[Johnson, Duane D.; Tringides, Michael C.] Iowa State Univ, Dept Phys, Ames, IA 50011 USA.
RP Wang, LL (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
OI Johnson, Duane/0000-0003-0794-7283
FU U.S. Department of Energy (DOE), Office of Science, Basic Energy
Sciences, Materials Science and Engineering Division; Ames Laboratory's
laboratory-directed research and development (LDRD) program; Iowa State
University [DE-AC02-07CH11358]
FX This work was supported by the U.S. Department of Energy (DOE), Office
of Science, Basic Energy Sciences, Materials Science and Engineering
Division, and by Ames Laboratory's laboratory-directed research and
development (LDRD) program that partially funded L.L.W. Ames Laboratory
is operated by Iowa State University under contract DE-AC02-07CH11358.
NR 49
TC 0
Z9 0
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD DEC 3
PY 2015
VL 92
IS 24
AR 245405
DI 10.1103/PhysRevB.92.245405
PG 6
WC Physics, Condensed Matter
SC Physics
GA CX5YY
UT WOS:000365779600007
ER
PT J
AU Pilania, G
Gubernatis, JE
Lookman, T
AF Pilania, G.
Gubernatis, J. E.
Lookman, T.
TI Classification of octet AB-type binary compounds using dynamical
charges: A materials informatics perspective
SO SCIENTIFIC REPORTS
LA English
DT Article
ID FUNCTIONAL PERTURBATION-THEORY; CRYSTAL-STRUCTURE; STRUCTURE MAPS;
POLARIZATION; SOLIDS; MODEL; IONICITY; VALENCE; SCALE; BOND
AB The role of dynamical (or Born effective) charges in classification of octet AB-type binary compounds between four-fold (zincblende/wurtzite crystal structures) and six-fold (rocksalt crystal structure) coordinated systems is discussed. We show that the difference in the dynamical charges of the fourfold and sixfold coordinated structures, in combination with Harrison's polarity, serves as an excellent feature to classify the coordination of 82 sp-bonded binary octet compounds. We use a support vector machine classifier to estimate the average classification accuracy and the associated variance in our model where a decision boundary is learned in a supervised manner. Finally, we compare the out-of-sample classification accuracy achieved by our feature pair with those reported previously.
C1 [Pilania, G.] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA.
[Gubernatis, J. E.; Lookman, T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Pilania, G (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, POB 1663, Los Alamos, NM 87545 USA.
EM gpilania@lanl.gov
RI Pilania, Ghanshyam/K-4468-2013
OI Pilania, Ghanshyam/0000-0003-4460-1572
FU Los Alamos National Laboratory (LANL) Directed Research and Development
Program; US Department of Energy, Office of Science, Office of Basic
Energy Sciences
FX This work was supported by the Los Alamos National Laboratory (LANL)
Directed Research and Development Program and the US Department of
Energy, Office of Science, Office of Basic Energy Sciences. Discussions
with Luca Ghiringhelli, Matthias Rupp, and Mathias Scheffler are
gratefully acknowledged.
NR 38
TC 3
Z9 3
U1 0
U2 7
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD DEC 3
PY 2015
VL 5
AR 17504
DI 10.1038/srep17504
PG 9
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA CX4RZ
UT WOS:000365689300001
PM 26631979
ER
PT J
AU Melhorn, AC
Dimitrovski, A
AF Melhorn, Alexander C.
Dimitrovski, Aleksandar
TI Three-phase probabilistic load flow in radial and meshed distribution
networks
SO IET GENERATION TRANSMISSION & DISTRIBUTION
LA English
DT Article
DE load flow; demand side management; probability; wind turbines; higher
order statistics; Monte Carlo methods; distributed power generation;
three phase probabilistic load flow; meshed distribution network; radial
distribution network; deterministic power system tool; demand response
program; fundamental load flow analysis; discrete probability density
function; nodal voltage; power flows; IEEE 13 node test feeder; radial
configuration; modified mesh configuration; wind turbine; cumulants;
Monte Carlo simulation; PLF method; stochastic problems; power
distribution system
AB With the introduction of higher levels of renewables and demand response programs, traditional deterministic power system tools fall short of expectations. Probabilistic load flow (PLF) takes into account the inconsistency or the unknown loads, and generation in the fundamental load flow analysis. This study proposes a PLF solution for both balanced and unbalanced, radial and weakly meshed networks without explicitly using the Y-bus matrix. It allows for discrete probability density functions as input variables without having to assume a predefined distribution. The nodal voltages and the power flows can be calculated independently from one another. The proposed method is applied to the IEEE 123 Node Test Feeder and the IEEE 13 Node Test Feeder in both its original radial configuration and a modified mesh configuration, including a load replaced with a wind turbine. The results are validated by comparison of the proposed method's solutions to those obtained using cumulants and Monte Carlo simulation. The proposed PLF method provides an accurate and practical way for finding the solution to stochastic problems occurring in power distribution systems allowing for real-system data to be analysed.
C1 [Melhorn, Alexander C.] Univ Coll Dublin, Sch Elect Elect & Commun Engn, Elect Res Ctr, Dublin 2, Ireland.
[Dimitrovski, Aleksandar] Oak Ridge Natl Lab, Elect & Elect Syst Res Div, Oak Ridge, TN USA.
RP Melhorn, AC (reprint author), Univ Coll Dublin, Sch Elect Elect & Commun Engn, Elect Res Ctr, Dublin 2, Ireland.
EM acmelhorn@gmail.com
RI Dimitrovski, Aleksandar/G-5897-2016
OI Dimitrovski, Aleksandar/0000-0001-9109-621X
FU Science Foundation Ireland [09/SRC/E1780]; U.S. Department of Energy
[DE-AC0500OR22725]
FX Alexander C. Melhorn was with the Electricity Research Centre,
University College Dublin and was supported by the Science Foundation
Ireland under grant no. 09/SRC/E1780.; Aleksandar Dimitrovski was with
the Electrical and Electronics Systems Research Division, Oak Ridge
National Laboratory and this research was supported by the U.S.
Department of Energy under Contract No. DE-AC0500OR22725.
NR 13
TC 3
Z9 3
U1 0
U2 4
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8687
EI 1751-8695
J9 IET GENER TRANSM DIS
JI IET Gener. Transm. Distrib.
PD DEC 3
PY 2015
VL 9
IS 16
BP 2743
EP 2750
DI 10.1049/iet-gtd.2015.0521
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA CW9RC
UT WOS:000365334900014
ER
PT J
AU Chang, C
Tesar, C
Li, XQ
Kim, Y
Rodionov, DA
Joachimiak, A
AF Chang, Changsoo
Tesar, Christine
Li, Xiaoqing
Kim, Youngchang
Rodionov, Dmitry A.
Joachimiak, Andrzej
TI A novel transcriptional regulator of L-arabinose utilization in human
gut bacteria
SO NUCLEIC ACIDS RESEARCH
LA English
DT Article
ID DIMERIZATION DOMAIN; CRYSTAL-STRUCTURE; NAD METABOLISM; NUCLEIC-ACIDS;
MODEL; PROTEIN; ARAC; HYDROLASE; SYSTEM; RECONSTRUCTION
AB Carbohydrate metabolism plays a crucial role in the ecophysiology of human gut microbiota. Mechanisms of transcriptional regulation of sugar catabolism in commensal and prevalent human gut bacteria such as Bacteroides thetaiotaomicron remain mostly unknown. By a combination of bioinformatics and experimental approaches, we have identified an NrtR family transcription factor (BT0354 in B. thetaiotaomicron, BtAraR) as a novel regulator controlling the arabinose utilization genes. L-arabinose was confirmed to be a negative effector of BtAraR. We have solved the crystal structures of the apo and L-arabinose-bound BtAraR proteins, as well as the complex of apo-protein with a specific DNA operator. BtAraR forms a homodimer with each subunit comprised of the ligand-binding Nudix hydrolase-like domain and the DNA-binding winged-helix-turn-helix (wHTH) domain. We have identified the residues involved in binding of L-arabinose and recognition of DNA. The majority of these residues are well conserved in the AraR orthologs in Bacteroidetes. In the structure of the BtAraR-DNA complex, we found the unique interaction of arginine intercalating its guanidinum moiety into the base pair stacking of B-DNA. L-arabinose binding induces movement of wHTH domains, resulting in a conformation unsuitable for DNA binding. Our analysis facilitates reconstruction of the metabolic and regulatory networks involved in carbohydrate utilization in human gut Bacteroides.
C1 [Chang, Changsoo; Tesar, Christine; Kim, Youngchang; Joachimiak, Andrzej] Argonne Natl Lab, Midwest Ctr Struct Genom, Argonne, IL 60439 USA.
[Chang, Changsoo; Kim, Youngchang; Joachimiak, Andrzej] Argonne Natl Lab, Biosci Div, Struct Biol Ctr, Argonne, IL 60439 USA.
[Li, Xiaoqing; Rodionov, Dmitry A.] Sanford Burnham Med Res Inst, La Jolla, CA 92037 USA.
[Rodionov, Dmitry A.] Russian Acad Sci, AA Kharkevich Inst Informat Transmiss Problems, Moscow 127994, Russia.
[Joachimiak, Andrzej] Univ Chicago, Dept Biochem & Mol Biol, Chicago, IL 60637 USA.
RP Joachimiak, A (reprint author), Argonne Natl Lab, Midwest Ctr Struct Genom, Argonne, IL 60439 USA.
EM andrzejj@anl.gov
FU National Institutes of Health [GM094585]; US Department of Energy,
Office of Biological and Environmental Research [DE-AC02-06CH11357];
Russian Science Foundation [14-14-00289]; US Department of Energy
FX National Institutes of Health Grant [GM094585 to A.J.]; US Department of
Energy, Office of Biological and Environmental Research
[DE-AC02-06CH11357]; Russian Science Foundation [14-14-00289 to D.A.R.].
Funding for open access charge: US Department of Energy; National
Institutes of Health.
NR 46
TC 2
Z9 2
U1 3
U2 13
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0305-1048
EI 1362-4962
J9 NUCLEIC ACIDS RES
JI Nucleic Acids Res.
PD DEC 2
PY 2015
VL 43
IS 21
BP 10546
EP 10559
DI 10.1093/nar/gkv1005
PG 14
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA CY4WZ
UT WOS:000366410900047
PM 26438537
ER
PT J
AU Yu, M
Ji, LX
Neumann, DA
Chung, DH
Groom, J
Westpheling, J
He, C
Schmitz, RJ
AF Yu, Miao
Ji, Lexiang
Neumann, Drexel A.
Chung, Dae-hwan
Groom, Joseph
Westpheling, Janet
He, Chuan
Schmitz, Robert J.
TI Base-resolution detection of N-4-methylcytosine in genomic DNA using
4mC-Tet-assisted-bisulfite-sequencing
SO NUCLEIC ACIDS RESEARCH
LA English
DT Article
ID SINGLE-MOLECULE; METHYLATION VARIANTS; CYTOSINE METHYLATION;
5-METHYLCYTOSINE; RESTRICTION; N4-METHYLCYTOSINE;
5-HYDROXYMETHYLCYTOSINE; 5-CARBOXYLCYTOSINE; ARABIDOPSIS; METHYLOMES
AB Restriction-modification (R-M) systems pose a major barrier to DNA transformation and genetic engineering of bacterial species. Systematic identification of DNA methylation in R-M systems, including N-6-methyladenine (6mA), 5-methylcytosine (5mC) and N-4-methylcytosine (4mC), will enable strategies to make these species genetically tractable. Although single-molecule, real time (SMRT) sequencing technology is capable of detecting 4mC directly for any bacterial species regardless of whether an assembled genome exists or not, it is not as scalable to profiling hundreds to thousands of samples compared with the commonly used next-generation sequencing technologies. Here, we present 4mC-Tet- assisted bisulfite-sequencing (4mC-TAB-seq), a next-generation sequencing method that rapidly and cost efficiently reveals the genome-wide locations of 4mC for bacterial species with an available assembled reference genome. In 4mC-TAB-seq, both cytosines and 5mCs are read out as thymines, whereas only 4mCs are read out as cytosines, revealing their specific positions throughout the genome. We applied 4mC-TAB-seq to study the methylation of a member of the hyperthermophilc genus, Caldicelluiosiruptor, inwhich 4mC-related restriction is a major barrier to DNA transformation from other species. In combination with MethylC-seq, both 4mC- and 5mC-containing motifs are identified which can assist in rapid and efficient genetic engineering of these bacteria in the future.
C1 [Yu, Miao; He, Chuan] Univ Chicago, Howard Hughes Med Inst, Dept Chem, Chicago, IL 60637 USA.
[Yu, Miao; He, Chuan] Univ Chicago, Howard Hughes Med Inst, Inst Biophys Dynam, Chicago, IL 60637 USA.
[Ji, Lexiang] Univ Georgia, Inst Bioinformat, Athens, GA 30602 USA.
[Neumann, Drexel A.; Chung, Dae-hwan; Groom, Joseph; Westpheling, Janet; Schmitz, Robert J.] Univ Georgia, Dept Genet, Athens, GA 30602 USA.
[Westpheling, Janet] USDA, BioEnergy Sci Ctr, Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Schmitz, RJ (reprint author), Univ Georgia, Dept Genet, Athens, GA 30602 USA.
EM chuanhe@uchicago.edu; schmitz@uga.edu
FU University of Georgia; National Institutes of Health [R01 HG006827];
BioEnergy Science Center, a U.S. Department of Energy Bioenergy Research
Center - Office of Biological and Environmental Research in the DOE
Office of Science
FX University of Georgia [to R.J.S.]; National Institutes of Health [R01
HG006827 to C.H.]; The BioEnergy Science Center, a U.S. Department of
Energy Bioenergy Research Center supported by the Office of Biological
and Environmental Research in the DOE Office of Science [to JW]; and
M.Y. is a Howard Hughes Medical Institute predoctoral fellow; C.H. is an
investigator of the Howard Hughes Medical Institute. Funding for open
access charge: University of Georgia [to R.J.S.]
NR 31
TC 2
Z9 2
U1 8
U2 20
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0305-1048
EI 1362-4962
J9 NUCLEIC ACIDS RES
JI Nucleic Acids Res.
PD DEC 2
PY 2015
VL 43
IS 21
AR e148
DI 10.1093/nar/gkv738
PG 10
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA CY4WZ
UT WOS:000366410900011
PM 26184871
ER
PT J
AU Liang, WI
Zhang, XW
Zan, YL
Pan, M
Czarnik, C
Bustillo, K
Xu, J
Chu, YH
Zheng, HM
AF Liang, Wen-I
Zhang, Xiaowei
Zan, Yunlong
Pan, Ming
Czarnik, Cory
Bustillo, Karen
Xu, Jun
Chu, Ying-Hao
Zheng, Haimei
TI In Situ Study of Fe3Pt-Fe2O3 Core-Shell Nanoparticle Formation
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID ONE-POT SYNTHESIS; FEPT NANOPARTICLES; MAGNETIC NANOPARTICLES;
IRON-OXIDE; REDUCTION; GROWTH; NANOCRYSTALS; EVOLUTION; KINETICS; AU
AB We report an in situ study of Fe3Pt-Fe2O3 coreshell nanoparticle growth using liquid cell transmission electron microscopy. By controlling the Fe-to-Pt ratio in the precursor solution, we achieved the growth of nanoparticles with the formation of an ironplatinum alloy core followed by an iron oxide shell in the electron beam-induced reactions. There was no substantial change in the growth kinetics of the iron oxide shell after the FePt alloy core stopped growing. The core growth was arrested by depletion of the Pt precursor. Heteroepitaxy of Fe3Pt [101] (core)||alpha-Fe2O3 [111] (shell) was observed in most of the nanoparticles, while a polycrystalline iron oxide shell is developed eventually for strain relaxation. Our studies suggest that Pt atoms catalyze the reduction of Fe ions to form the Fe3Pt alloy core, and when Pt is depleted, a direct precipitation of iron oxide results in the core-shell nanostructure formation.
C1 [Liang, Wen-I; Chu, Ying-Hao] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan.
[Liang, Wen-I; Zhang, Xiaowei; Zheng, Haimei] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Zhang, Xiaowei; Xu, Jun] Nanjing Univ, Sch Elect Sci & Engn, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China.
[Zhang, Xiaowei; Xu, Jun] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China.
[Zan, Yunlong] Shanghai Jiao Tong Univ, Sch Biomed Engn, Shanghai 200030, Peoples R China.
[Pan, Ming; Czarnik, Cory] Gatan Inc, Pleasanton, CA 94588 USA.
[Bustillo, Karen] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Chu, Ying-Hao] Acad Sinica, Inst Phys, Taipei 105, Taiwan.
[Zheng, Haimei] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Chu, YH (reprint author), Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan.
EM yhc@nctu.edu.tw; hmzheng@lbl.gov
RI Ying-Hao, Chu/A-4204-2008
OI Ying-Hao, Chu/0000-0002-3435-9084
FU Office of Science, Office of Basic Energy Sciences, U.S. Department of
Energy (DOE) [DE-AC02-05CH11231]; Ministry of Science and Technology
(MOST) in Taiwan [NSC 102-2119-I-009-502]; National Basic Research
Program of China [2013CB632101]; China Scholarship Council
[201406190080, 201406230186]; U.S. DOE Office of Science Early Career
Research Program
FX We acknowledge the facility support of the Molecular Foundry, which was
supported by the Office of Science, Office of Basic Energy Sciences,
U.S. Department of Energy (DOE), under Contract No. DE-AC02-05CH11231.
W.I.L. and Y.H.C. acknowledge funding support from the Ministry of
Science and Technology (MOST) in Taiwan (NSC 102-2119-I-009-502). J.X.
and X.Z. acknowledge support from the National Basic Research Program of
China (2013CB632101) and China Scholarship Council (201406190080). Y.Z.
acknowledges support from the China Scholarship Council (201406230186).
This project was supported by U.S. DOE Office of Science Early Career
Research Program.
NR 31
TC 2
Z9 3
U1 21
U2 83
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD DEC 2
PY 2015
VL 137
IS 47
BP 14850
EP 14853
DI 10.1021/jacs.5610076
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA CX8CQ
UT WOS:000365930600006
PM 26566690
ER
PT J
AU Huynh, M
Shi, CY
Billinge, SJL
Nocera, DG
AF Huynh, Michael
Shi, Chenyang
Billinge, Simon J. L.
Nocera, Daniel G.
TI Nature of Activated Manganese Oxide for Oxygen Evolution
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID PAIR DISTRIBUTION FUNCTION; ELECTROCHEMICAL WATER OXIDATION; RAY
PHOTOELECTRON-SPECTROSCOPY; EVOLVING CATALYST; CATHODIC
ELECTRODEPOSITION; THIN-FILM; MNO2 NANOSTRUCTURES; SOLAR-ENERGY;
IN-SITU; ELECTROCATALYTIC PROPERTIES
AB Electrodeposited manganese oxide films (MnOx) are promising stable oxygen evolution catalysts. They are able to catalyze the oxygen evolution reaction in acidic solutions but with only modest activity when prepared by constant anodic potential deposition. We now show that the performance of these catalysts is improved when they are "activated" by potential cycling protocols, as measured by Tafel analysis (where lower slope is better): upon activation the Tafel slope decreases from similar to 120 to similar to 70 mV/decade in neutral conditions and from similar to 650 to similar to 90 mV/decade in acidic solutions. Electrochemical, spectroscopic, and structural methods were employed to study the activation process and support a mechanism where the original bimessite-like MnOx (delta-MnO2) undergoes a phase change, induced by comproportionation with cathodically generated Mn(OH)2, to a hausmannite-like intermediate (alpha-Mn3O4). Subsequent anodic conditioning from voltage cycling or water oxidation produces a disordered birnessite-like phase, which is highly active for oxygen evolution. At pH 2.5, the current density of activated MnOx (at an overpotential of 600 mV) is 2 orders of magnitude higher than that of the original MnOx and begins to approach that of Ru and Ir oxides in acid.
C1 [Huynh, Michael; Nocera, Daniel G.] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA.
[Shi, Chenyang; Billinge, Simon J. L.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA.
[Billinge, Simon J. L.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RP Nocera, DG (reprint author), Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA.
EM dnocera@fas.harvard.edu
RI shi, chenyang/A-9119-2014
FU U.S. Department of Energy Office of Science, Office of Basic Energy
Sciences [DE-SC0009565]; National Science Foundation [ECS-0335765];
Columbia University Energy Frontier Research Center - U.S. Department of
Energy, Basic Energy Sciences [DE-SC0001085]; U.S. Department of Energy
Office of Science, Office of Basic Energy Sciences Energy Frontier
Research Center, Center for Next Generation of Materials by Design
[DE-AC36-086028308]; U.S. Department of Energy, Basic Energy Sciences
(DOE-BES) [DE-AC02-98CH10886]
FX We thank Shao-Liang Zheng and Miller Li for assistance in powder X-ray
diffraction, Thomas J. Kempa for help with TEM imaging, and D. Kwabena
Bediako, Andrew M. Ullman, and Chong Liu for helpful discussions. This
material is based upon work supported by the U.S. Department of Energy
Office of Science, Office of Basic Energy Sciences under Award number
DE-SC0009565 (D.G.N.). SEM, TEM, and XPS were performed at Harvard
University's Center for Nanoscale Systems (CNS), a member of the
National Nanotechnology Infrastructure Network (NNIN), which is
supported by the National Science Foundation under ECS-0335765. X-ray
PDF studies were supported by the Columbia University Energy Frontier
Research Center funded by the U.S. Department of Energy, Basic Energy
Sciences, under Grant no. DE-SC0001085 (S.J.L.B.) and the U.S.
Department of Energy Office of Science, Office of Basic Energy Sciences
Energy Frontier Research Center, Center for Next Generation of Materials
by Design, Award number DE-AC36-086028308 (D.G.N.). NSLS is supported by
the U.S. Department of Energy, Basic Energy Sciences (DOE-BES) under
grant DE-AC02-98CH10886.
NR 149
TC 33
Z9 33
U1 48
U2 192
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD DEC 2
PY 2015
VL 137
IS 47
BP 14887
EP 14904
DI 10.1021/jacs.5b06382
PG 18
WC Chemistry, Multidisciplinary
SC Chemistry
GA CX8CQ
UT WOS:000365930600014
PM 26574923
ER
PT J
AU Wang, X
Vara, M
Luo, M
Huang, HW
Ruditskiy, A
Park, J
Bao, SX
Liu, JY
Howe, J
Chi, MF
Xie, ZX
Xia, YN
AF Wang, Xue
Vara, Madeline
Luo, Ming
Huang, Hongwen
Ruditskiy, Aleksey
Park, Jinho
Bao, Shixiong
Liu, Jingyue
Howe, Jane
Chi, Miaofang
Xie, Zhaoxiong
Xia, Younan
TI Pd@Pt Core-Shell Concave Decahedra: A Class of Catalysts for the Oxygen
Reduction Reaction with Enhanced Activity and Durability
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID PLATINUM-MONOLAYER ELECTROCATALYSTS; BY-LAYER DEPOSITION; HIGH-INDEX
FACETS; SURFACE-ENERGY; NANOCRYSTALS; SHAPE; ICOSAHEDRA; STRAIN; ALLOY;
NANOPARTICLES
AB We report a facile synthesis of multiply twinned Pd@Pt core shell concave decahedra by controlling the deposition of Pt on preformed Pd decahedral seeds. The Pt atoms are initially deposited on the vertices of a decahedral seed, followed by surface diffusion to other regions along the edges/ridges and then across the faces. Different from the coating of a Pd icosahedral seed, the Pt atoms prefer to stay at the vertices and edges/ridges of a decahedral seed even when the deposition is conducted at 200 degrees C, naturally generating a core shell structure covered by concave facets. The nonuniformity in the Pt coating can be attributed to the presence of twin boundaries at the vertices, as well as the {100} facets and twin defects along the edges/ridges of a decahedron, effectively trapping the Pt adatoms at these high-energy sites. As compared to a commercial Pt/C catalyst, the Pd@Pt concave decahedra show substantial enhancement in both catalytic activity and durability toward the oxygen reduction reaction (ORR). For the concave decahedra with 29.6% Pt by weight, their specific (1.66 mA/cm(pt)(2)) and mass (1.60 A/mg/0 ORR activities are enhanced by 4.4 and 6.6 times relative to those of the Pt/C catalyst (0.36 mA/cm(pt)(2) and 0.32 A/mgpt, respectively). After 10 000 cycles of accelerated durability test, the concave decahedra still exhibit a mass activity of 0.69 A/mgpt, more than twice that of the pristine Pt/C catalyst.
C1 [Wang, Xue; Luo, Ming; Huang, Hongwen; Bao, Shixiong; Xia, Younan] Georgia Inst Technol, Wallace H Coulter Dept Biomed Engn, Atlanta, GA 30332 USA.
[Wang, Xue; Luo, Ming; Huang, Hongwen; Bao, Shixiong; Xia, Younan] Emory Univ, Atlanta, GA 30332 USA.
[Wang, Xue; Bao, Shixiong; Xie, Zhaoxiong] Xiamen Univ, Collaborat Innovat Ctr Chem Energy Mat, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Fujian, Peoples R China.
[Wang, Xue; Bao, Shixiong; Xie, Zhaoxiong] Xiamen Univ, Dept Chem, Xiamen 361005, Fujian, Peoples R China.
[Vara, Madeline; Ruditskiy, Aleksey; Park, Jinho; Xia, Younan] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
[Liu, Jingyue] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
[Howe, Jane] Hitachi High Technol Canada, Toronto, ON M9W 6A4, Canada.
[Chi, Miaofang] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Xia, YN (reprint author), Georgia Inst Technol, Wallace H Coulter Dept Biomed Engn, Atlanta, GA 30332 USA.
EM younan.xia@bme.gatech.edu
RI Xia, Younan/E-8499-2011; Chi, Miaofang/Q-2489-2015; Wang,
Xue/D-4488-2012; Howe, Jane/G-2890-2011; Xie, Zhaoxiong/G-3416-2010
OI Chi, Miaofang/0000-0003-0764-1567; Wang, Xue/0000-0002-6298-1858;
FU Georgia Institute of Technology; NSF [CHE 1505441]; China Scholarship
Council; ORNL's Center for Nanophase Materials Sciences; Arizona State
University
FX This work was supported in part by start-up funds from the Georgia
Institute of Technology and a grant from the NSF (CHE 1505441). As
visiting Ph.D. students, X.W., M.L., H.H, and S.B. also received partial
support from the China Scholarship Council. High-resolution imaging and
tomography electron microscopy were performed through a user project
supported by the ORNL's Center for Nanophase Materials Sciences, which
is a U.S. DOE Office of Science User Facility (M.C.). J.L. acknowledges
the support by Arizona State University and the use of facilities in the
John M. Cowley Center for High Resolution Electron Microscopy at Arizona
State University.
NR 34
TC 45
Z9 45
U1 57
U2 296
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD DEC 2
PY 2015
VL 137
IS 47
BP 15036
EP 15042
DI 10.1021/jacs.5b10059
PG 7
WC Chemistry, Multidisciplinary
SC Chemistry
GA CX8CQ
UT WOS:000365930600029
PM 26566188
ER
PT J
AU Abazov, VM
Abbott, B
Acharya, BS
Adams, M
Adams, T
Agnew, JP
Alexeev, GD
Alkhazov, G
Alton, A
Askew, A
Atkins, S
Augsten, K
Avila, C
Badaud, F
Bagby, L
Baldin, B
Bandurin, DV
Banerjee, S
Barberis, E
Baringer, P
Bartlett, JF
Bassler, U
Bazterra, V
Bean, A
Begalli, M
Bellantoni, L
Beri, SB
Bernardi, G
Bernhard, R
Bertram, I
Besancon, M
Beuselinck, R
Bhat, PC
Bhatia, S
Bhatnagar, V
Blazey, G
Blessing, S
Bloom, K
Boehnlein, A
Boline, D
Boos, EE
Borissov, G
Borysova, M
Brandt, A
Brandt, O
Brock, R
Bross, A
Brown, D
Bu, XB
Buehler, M
Buescher, V
Bunichev, V
Burdin, S
Buszello, CP
Camacho-Perez, E
Casey, BCK
Castilla-Valdez, H
Caughron, S
Chakrabarti, S
Chan, KM
Chandra, A
Chapon, E
Chen, G
Cho, SW
Choi, S
Choudhary, B
Cihangir, S
Claes, D
Clutter, J
Cooke, M
Cooper, WE
Corcoran, M
Couderc, F
Cousinou, MC
Cuth, J
Cutts, D
Das, A
Davies, G
de Jong, SJ
De La Cruz-Burelo, E
Deliot, F
Demina, R
Denisov, D
Denisov, SP
Desai, S
Deterre, C
DeVaughan, K
Diehl, HT
Diesburg, M
Ding, PF
Dominguez, A
Dubey, A
Dudko, LV
Duperrin, A
Dutt, S
Eads, M
Edmunds, D
Ellison, J
Elvira, VD
Enari, Y
Evans, H
Evdokimov, A
Evdokimov, VN
Faure, A
Feng, L
Ferbel, T
Fiedler, F
Filthaut, F
Fisher, W
Fisk, HE
Fortner, M
Fox, H
Fuess, S
Garbincius, PH
Garcia-Bellido, A
Garcia-Gonzalez, JA
Gavrilov, V
Geng, W
Gerber, CE
Gershtein, Y
Ginther, G
Gogota, O
Golovanov, G
Grannis, PD
Greder, S
Greenlee, H
Grenier, G
Gris, P
Grivaz, JF
Grohsjean, A
Grunendahl, S
Grunewald, MW
Guillemin, T
Gutierrez, G
Gutierrez, P
Haley, J
Han, L
Harder, K
Harel, A
Hauptman, JM
Hays, J
Head, T
Hebbeker, T
Hedin, D
Hegab, H
Heinson, AP
Heintz, U
Hensel, C
Heredia-De La Cruz, I
Herner, K
Hesketh, G
Hildreth, MD
Hirosky, R
Hoang, T
Hobbs, JD
Hoeneisen, B
Hogan, J
Hohlfeld, M
Holzbauer, JL
Howley, I
Hubacek, Z
Hynek, V
Iashvili, I
Ilchenko, Y
Illingworth, R
Ito, AS
Jabeen, S
Jaffre, M
Jayasinghe, A
Jeong, MS
Jesik, R
Jiang, P
Johns, K
Johnson, E
Johnson, M
Jonckheere, A
Jonsson, P
Joshi, J
Jung, AW
Juste, A
Kajfasz, E
Karmanov, D
Katsanos, I
Kaur, M
Kehoe, R
Kermiche, S
Khalatyan, N
Khanov, A
Kharchilava, A
Kharzheev, YN
Kiselevich, I
Kohli, JM
Kozelov, AV
Kraus, J
Kumar, A
Kupco, A
Kurca, T
Kuzmin, VA
Lammers, S
Lebrun, P
Lee, HS
Lee, SW
Lee, WM
Lei, X
Lellouch, J
Li, D
Li, H
Li, L
Li, QZ
Lim, JK
Lincoln, D
Linnemann, J
Lipaev, VV
Lipton, R
Liu, H
Liu, Y
Lobodenko, A
Lokajicek, M
de Sa, RL
Luna-Garcia, R
Lyon, AL
Maciel, AKA
Madar, R
Magana-Villalba, R
Malik, S
Malyshev, VL
Mansour, J
Martinez-Ortega, J
McCarthy, R
McGivern, CL
Meijer, MM
Melnitchouk, A
Menezes, D
Mercadante, PG
Merkin, M
Meyer, A
Meyer, J
Miconi, F
Mondal, NK
Mulhearn, M
Nagy, E
Narain, M
Nayyar, R
Neal, HA
Negret, JP
Neustroev, P
Nguyen, HT
Nunnemann, T
Orduna, J
Osman, N
Osta, J
Pal, A
Parashar, N
Parihar, V
Park, SK
Partridge, R
Parua, N
Patwa, A
Penning, B
Perfilov, M
Peters, Y
Petridis, K
Petrillo, G
Petroff, P
Pleier, MA
Podstavkov, VM
Popov, AV
Prewitt, M
Price, D
Prokopenko, N
Qian, J
Quadt, A
Quinn, B
Ratoff, PN
Razumov, I
Ripp-Baudot, I
Rizatdinova, F
Rominsky, M
Ross, A
Royon, C
Rubinov, P
Ruchti, R
Sajot, G
Sanchez-Hernandez, A
Sanders, MP
Santos, AS
Savage, G
Savitskyi, M
Sawyer, L
Scanlon, T
Schamberger, RD
Scheglov, Y
Schellman, H
Schott, M
Schwanenberger, C
Schwienhorst, R
Sekaric, J
Severini, H
Shabalina, E
Shary, V
Shaw, S
Shchukin, AA
Simak, V
Skubic, P
Slattery, P
Smirnov, D
Snow, GR
Snow, J
Snyder, S
Soldner-Rembold, S
Sonnenschein, L
Soustruznik, K
Stark, J
Stoyanova, DA
Strauss, M
Suter, L
Svoisky, P
Titov, M
Tokmenin, VV
Tsai, YT
Tsybychev, D
Tuchming, B
Tully, C
Uvarov, L
Uvarov, S
Uzunyan, S
Van Kooten, R
van Leeuwen, WM
Varelas, N
Varnes, EW
Vasilyev, IA
Verkheev, AY
Vertogradov, LS
Verzocchi, M
Vesterinen, M
Vilanova, D
Vokac, P
Wahl, HD
Wang, MHLS
Warchol, J
Watts, G
Wayne, M
Weichert, J
Welty-Rieger, L
Williams, MRJ
Wilson, GW
Wobisch, M
Wood, DR
Wyatt, TR
Xie, Y
Yamada, R
Yang, S
Yasuda, T
Yatsunenko, YA
Ye, W
Ye, Z
Yin, H
Yip, K
Youn, SW
Yu, JM
Zennamo, J
Zhao, TG
Zhou, B
Zhu, J
Zielinski, M
Zieminska, D
Zivkovic, L
AF Abazov, V. M.
Abbott, B.
Acharya, B. S.
Adams, M.
Adams, T.
Agnew, J. P.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Askew, A.
Atkins, S.
Augsten, K.
Avila, C.
Badaud, F.
Bagby, L.
Baldin, B.
Bandurin, D. V.
Banerjee, S.
Barberis, E.
Baringer, P.
Bartlett, J. F.
Bassler, U.
Bazterra, V.
Bean, A.
Begalli, M.
Bellantoni, L.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
Besancon, M.
Beuselinck, R.
Bhat, P. C.
Bhatia, S.
Bhatnagar, V.
Blazey, G.
Blessing, S.
Bloom, K.
Boehnlein, A.
Boline, D.
Boos, E. E.
Borissov, G.
Borysova, M.
Brandt, A.
Brandt, O.
Brock, R.
Bross, A.
Brown, D.
Bu, X. B.
Buehler, M.
Buescher, V.
Bunichev, V.
Burdin, S.
Buszello, C. P.
Camacho-Perez, E.
Casey, B. C. K.
Castilla-Valdez, H.
Caughron, S.
Chakrabarti, S.
Chan, K. M.
Chandra, A.
Chapon, E.
Chen, G.
Cho, S. W.
Choi, S.
Choudhary, B.
Cihangir, S.
Claes, D.
Clutter, J.
Cooke, M.
Cooper, W. E.
Corcoran, M.
Couderc, F.
Cousinou, M. -C.
Cuth, J.
Cutts, D.
Das, A.
Davies, G.
de Jong, S. J.
De La Cruz-Burelo, E.
Deliot, F.
Demina, R.
Denisov, D.
Denisov, S. P.
Desai, S.
Deterre, C.
DeVaughan, K.
Diehl, H. T.
Diesburg, M.
Ding, P. F.
Dominguez, A.
Dubey, A.
Dudko, L. V.
Duperrin, A.
Dutt, S.
Eads, M.
Edmunds, D.
Ellison, J.
Elvira, V. D.
Enari, Y.
Evans, H.
Evdokimov, A.
Evdokimov, V. N.
Faure, A.
Feng, L.
Ferbel, T.
Fiedler, F.
Filthaut, F.
Fisher, W.
Fisk, H. E.
Fortner, M.
Fox, H.
Fuess, S.
Garbincius, P. H.
Garcia-Bellido, A.
Garcia-Gonzalez, J. A.
Gavrilov, V.
Geng, W.
Gerber, C. E.
Gershtein, Y.
Ginther, G.
Gogota, O.
Golovanov, G.
Grannis, P. D.
Greder, S.
Greenlee, H.
Grenier, G.
Gris, Ph.
Grivaz, J. -F.
Grohsjean, A.
Gruenendahl, S.
Gruenewald, M. W.
Guillemin, T.
Gutierrez, G.
Gutierrez, P.
Haley, J.
Han, L.
Harder, K.
Harel, A.
Hauptman, J. M.
Hays, J.
Head, T.
Hebbeker, T.
Hedin, D.
Hegab, H.
Heinson, A. P.
Heintz, U.
Hensel, C.
Heredia-De La Cruz, I.
Herner, K.
Hesketh, G.
Hildreth, M. D.
Hirosky, R.
Hoang, T.
Hobbs, J. D.
Hoeneisen, B.
Hogan, J.
Hohlfeld, M.
Holzbauer, J. L.
Howley, I.
Hubacek, Z.
Hynek, V.
Iashvili, I.
Ilchenko, Y.
Illingworth, R.
Ito, A. S.
Jabeen, S.
Jaffre, M.
Jayasinghe, A.
Jeong, M. S.
Jesik, R.
Jiang, P.
Johns, K.
Johnson, E.
Johnson, M.
Jonckheere, A.
Jonsson, P.
Joshi, J.
Jung, A. W.
Juste, A.
Kajfasz, E.
Karmanov, D.
Katsanos, I.
Kaur, M.
Kehoe, R.
Kermiche, S.
Khalatyan, N.
Khanov, A.
Kharchilava, A.
Kharzheev, Y. N.
Kiselevich, I.
Kohli, J. M.
Kozelov, A. V.
Kraus, J.
Kumar, A.
Kupco, A.
Kurca, T.
Kuzmin, V. A.
Lammers, S.
Lebrun, P.
Lee, H. S.
Lee, S. W.
Lee, W. M.
Lei, X.
Lellouch, J.
Li, D.
Li, H.
Li, L.
Li, Q. Z.
Lim, J. K.
Lincoln, D.
Linnemann, J.
Lipaev, V. V.
Lipton, R.
Liu, H.
Liu, Y.
Lobodenko, A.
Lokajicek, M.
de Sa, R. Lopes
Luna-Garcia, R.
Lyon, A. L.
Maciel, A. K. A.
Madar, R.
Magana-Villalba, R.
Malik, S.
Malyshev, V. L.
Mansour, J.
Martinez-Ortega, J.
McCarthy, R.
McGivern, C. L.
Meijer, M. M.
Melnitchouk, A.
Menezes, D.
Mercadante, P. G.
Merkin, M.
Meyer, A.
Meyer, J.
Miconi, F.
Mondal, N. K.
Mulhearn, M.
Nagy, E.
Narain, M.
Nayyar, R.
Neal, H. A.
Negret, J. P.
Neustroev, P.
Nguyen, H. T.
Nunnemann, T.
Orduna, J.
Osman, N.
Osta, J.
Pal, A.
Parashar, N.
Parihar, V.
Park, S. K.
Partridge, R.
Parua, N.
Patwa, A.
Penning, B.
Perfilov, M.
Peters, Y.
Petridis, K.
Petrillo, G.
Petroff, P.
Pleier, M. -A.
Podstavkov, V. M.
Popov, A. V.
Prewitt, M.
Price, D.
Prokopenko, N.
Qian, J.
Quadt, A.
Quinn, B.
Ratoff, P. N.
Razumov, I.
Ripp-Baudot, I.
Rizatdinova, F.
Rominsky, M.
Ross, A.
Royon, C.
Rubinov, P.
Ruchti, R.
Sajot, G.
Sanchez-Hernandez, A.
Sanders, M. P.
Santos, A. S.
Savage, G.
Savitskyi, M.
Sawyer, L.
Scanlon, T.
Schamberger, R. D.
Scheglov, Y.
Schellman, H.
Schott, M.
Schwanenberger, C.
Schwienhorst, R.
Sekaric, J.
Severini, H.
Shabalina, E.
Shary, V.
Shaw, S.
Shchukin, A. A.
Simak, V.
Skubic, P.
Slattery, P.
Smirnov, D.
Snow, G. R.
Snow, J.
Snyder, S.
Soeldner-Rembold, S.
Sonnenschein, L.
Soustruznik, K.
Stark, J.
Stoyanova, D. A.
Strauss, M.
Suter, L.
Svoisky, P.
Titov, M.
Tokmenin, V. V.
Tsai, Y. -T.
Tsybychev, D.
Tuchming, B.
Tully, C.
Uvarov, L.
Uvarov, S.
Uzunyan, S.
Van Kooten, R.
van Leeuwen, W. M.
Varelas, N.
Varnes, E. W.
Vasilyev, I. A.
Verkheev, A. Y.
Vertogradov, L. S.
Verzocchi, M.
Vesterinen, M.
Vilanova, D.
Vokac, P.
Wahl, H. D.
Wang, M. H. L. S.
Warchol, J.
Watts, G.
Wayne, M.
Weichert, J.
Welty-Rieger, L.
Williams, M. R. J.
Wilson, G. W.
Wobisch, M.
Wood, D. R.
Wyatt, T. R.
Xie, Y.
Yamada, R.
Yang, S.
Yasuda, T.
Yatsunenko, Y. A.
Ye, W.
Ye, Z.
Yin, H.
Yip, K.
Youn, S. W.
Yu, J. M.
Zennamo, J.
Zhao, T. G.
Zhou, B.
Zhu, J.
Zielinski, M.
Zieminska, D.
Zivkovic, L.
CA D0 Collaboration
TI Inclusive Production of the X(4140) State in p(p)over-bar Collisions at
D0
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DETECTOR
AB We present a study of the inclusive production of the X(4140) state with the decay to the J/psi phi final state in hadronic collisions. Based on 10.4 fb(-1) of p (p) over bar collision data collected by the D0 experiment at the Fermilab Tevatron collider, we report the first evidence for the prompt production of an X(4140) state and find the fraction of X(4140) events originating from b hadrons to be f(b) = 0.39 +/- 0.07 (stat) +/- 0.10 (syst). The ratio of the nonprompt X(4140) production rate to the B-s(0) yield in the same channel is R = 0.19 +/- 0.05 (stat) +/- 0.07 (syst). The values of the mass M = 4152.5 +/- 1.7 (stat)(-5.4)(+/- 6.2)(syst) MeV and width Gamma = 16.3 +/- 5.6 (stat) +/- 11.4 (syst) MeV are consistent with previous measurements.
C1 [Hensel, C.; Maciel, A. K. A.; Santos, A. S.] LAFEX, Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil.
[Begalli, M.] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil.
[Mercadante, P. G.] Univ Fed ABC, Santo Andre, Brazil.
[Han, L.; Jiang, P.; Liu, Y.; Yang, S.] Univ Sci & Technol China, Hefei, Peoples R China.
[Avila, C.; Negret, J. P.] Univ Los Andes, Bogota, Colombia.
[Soustruznik, K.] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic.
[Augsten, K.; Hubacek, Z.; Hynek, V.; Simak, V.; Vokac, P.] Czech Tech Univ, CR-16635 Prague, Czech Republic.
[Kupco, A.; Lokajicek, M.; Royon, C.] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic.
[Hoeneisen, B.] Univ San Francisco Quito, Quito, Ecuador.
[Badaud, F.; Gris, Ph.] Univ Clermont Ferrand, LPC, CNRS IN2P3, Clermont, France.
[Sajot, G.; Stark, J.] Univ Grenoble 1, LPSC, CNRS IN2P3, Inst Natl Polytech Grenoble, Grenoble, France.
[Cousinou, M. -C.; Duperrin, A.; Geng, W.; Kajfasz, E.; Kermiche, S.; Nagy, E.; Osman, N.] Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France.
[Grivaz, J. -F.; Guillemin, T.; Jaffre, M.; Petroff, P.] Univ Paris 11, LAL, CNRS IN2P3, Orsay, France.
[Bernardi, G.; Brown, D.; Enari, Y.; Lellouch, J.; Li, D.; Zivkovic, L.] Univ Paris 06, LPNHE, Paris, France.
[Bernardi, G.; Brown, D.; Enari, Y.; Lellouch, J.; Li, D.; Zivkovic, L.] Univ Paris 06, CNRS IN2P3, Paris, France.
[Bassler, U.; Besancon, M.; Chapon, E.; Couderc, F.; Deliot, F.; Faure, A.; Grohsjean, A.; Hubacek, Z.; Shary, V.; Titov, M.; Tuchming, B.; Vilanova, D.] CEA, Irfu, SPP, Saclay, France.
[Greder, S.; Miconi, F.; Ripp-Baudot, I.] Univ Strasbourg, IPHC, CNRS IN2P3, Strasbourg, France.
[Grenier, G.; Kurca, T.; Lebrun, P.] Univ Lyon 1, IPNL, CNRS IN2P3, F-69622 Villeurbanne, France.
[Grenier, G.; Kurca, T.; Lebrun, P.] Univ Lyon, Lyon, France.
[Hebbeker, T.; Meyer, A.; Sonnenschein, L.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.
[Bernhard, R.; Madar, R.] Univ Freiburg, Phys Inst, D-79106 Freiburg, Germany.
[Brandt, O.; Mansour, J.; Meyer, J.; Quadt, A.; Shabalina, E.] Univ Gottingen, Phys Inst 2, D-37073 Gottingen, Germany.
[Buescher, V.; Cuth, J.; Fiedler, F.; Hohlfeld, M.; Schott, M.; Weichert, J.] Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany.
[Nunnemann, T.; Sanders, M. P.] Univ Munich, Munich, Germany.
[Beri, S. B.; Bhatnagar, V.; Dutt, S.; Kaur, M.; Kohli, J. M.] Panjab Univ, Chandigarh 160014, India.
[Choudhary, B.; Dubey, A.] Univ Delhi, Delhi 110007, India.
[Acharya, B. S.; Banerjee, S.; Mondal, N. K.] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
[Gruenewald, M. W.] Univ Coll Dublin, Dublin 2, Ireland.
[Cho, S. W.; Choi, S.; Jeong, M. S.; Lee, H. S.; Lim, J. K.; Park, S. K.] Korea Univ, Korea Detector Lab, Seoul, South Korea.
[Camacho-Perez, E.; Castilla-Valdez, H.; De La Cruz-Burelo, E.; Garcia-Gonzalez, J. A.; Heredia-De La Cruz, I.; Luna-Garcia, R.; Magana-Villalba, R.; Martinez-Ortega, J.; Sanchez-Hernandez, A.] CINVESTAV, Mexico City 14000, DF, Mexico.
[de Jong, S. J.; Filthaut, F.; Meijer, M. M.; van Leeuwen, W. M.] Nikhef, Amsterdam, Netherlands.
[de Jong, S. J.; Filthaut, F.; Meijer, M. M.] Radboud Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands.
[Abazov, V. M.; Alexeev, G. D.; Golovanov, G.; Kharzheev, Y. N.; Malyshev, V. L.; Tokmenin, V. V.; Verkheev, A. Y.; Vertogradov, L. S.; Yatsunenko, Y. A.] Joint Inst Nucl Res, Dubna, Russia.
[Gavrilov, V.; Kiselevich, I.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Boos, E. E.; Bunichev, V.; Dudko, L. V.; Karmanov, D.; Kuzmin, V. A.; Merkin, M.; Perfilov, M.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Denisov, S. P.; Evdokimov, V. N.; Kozelov, A. V.; Lipaev, V. V.; Popov, A. V.; Prokopenko, N.; Razumov, I.; Shchukin, A. A.; Stoyanova, D. A.; Vasilyev, I. A.] Inst High Energy Phys, Protvino, Russia.
[Alkhazov, G.; Lobodenko, A.; Neustroev, P.; Scheglov, Y.; Uvarov, L.; Uvarov, S.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Juste, A.] ICREA, Barcelona, Spain.
[Juste, A.] IFAE, Barcelona, Spain.
[Buszello, C. P.] Uppsala Univ, Uppsala, Sweden.
[Borysova, M.; Gogota, O.; Savitskyi, M.] Taras Shevchenko Natl Univ Kyiv, Kiev, Ukraine.
[Bertram, I.; Borissov, G.; Burdin, S.; Fox, H.; Ratoff, P. N.; Ross, A.] Univ Lancaster, Lancaster LA1 4YB, England.
[Beuselinck, R.; Davies, G.; Hays, J.; Jesik, R.; Jonsson, P.; Penning, B.; Scanlon, T.] Imperial Coll London, London SW7 2AZ, England.
[Agnew, J. P.; Deterre, C.; Ding, P. F.; Harder, K.; Head, T.; Hesketh, G.; McGivern, C. L.; Peters, Y.; Petridis, K.; Price, D.; Schwanenberger, C.; Shaw, S.; Soeldner-Rembold, S.; Suter, L.; Vesterinen, M.; Wyatt, T. R.; Zhao, T. G.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Johns, K.; Lei, X.; Nayyar, R.; Varnes, E. W.] Univ Arizona, Tucson, AZ 85721 USA.
[Ellison, J.; Heinson, A. P.; Joshi, J.; Li, L.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Adams, T.; Askew, A.; Blessing, S.; Hoang, T.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA.
[Bagby, L.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Bu, X. B.; Buehler, M.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisk, H. E.; Fuess, S.; Garbincius, P. H.; Ginther, G.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Herner, K.; Illingworth, R.; Ito, A. S.; Jabeen, S.; Johnson, M.; Jonckheere, A.; Jung, A. W.; Khalatyan, N.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; de Sa, R. Lopes; Lyon, A. L.; Melnitchouk, A.; Podstavkov, V. M.; Rominsky, M.; Rubinov, P.; Savage, G.; Verzocchi, M.; Wang, M. H. L. S.; Xie, Y.; Yamada, R.; Yasuda, T.; Ye, Z.; Yin, H.; Youn, S. W.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Adams, M.; Bazterra, V.; Evdokimov, A.; Gerber, C. E.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA.
[Blazey, G.; Eads, M.; Feng, L.; Fortner, M.; Hedin, D.; Menezes, D.; Uzunyan, S.] Northern Illinois Univ, De Kalb, IL 60115 USA.
[Schellman, H.; Welty-Rieger, L.] Northwestern Univ, Evanston, IL 60208 USA.
[Evans, H.; Lammers, S.; Parua, N.; Van Kooten, R.; Williams, M. R. J.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA.
[Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA.
[Chan, K. M.; Hildreth, M. D.; Osta, J.; Ruchti, R.; Smirnov, D.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Hauptman, J. M.; Lee, S. W.] Iowa State Univ, Ames, IA 50011 USA.
[Baringer, P.; Bean, A.; Chen, G.; Clutter, J.; Sekaric, J.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA.
[Atkins, S.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA.
[Barberis, E.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA.
[Alton, A.; Neal, H. A.; Qian, J.; Yu, J. M.; Zhou, B.; Zhu, J.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Brock, R.; Caughron, S.; Edmunds, D.; Fisher, W.; Geng, W.; Johnson, E.; Linnemann, J.; Schwienhorst, R.] Michigan State Univ, E Lansing, MI 48824 USA.
[Bhatia, S.; Holzbauer, J. L.; Kraus, J.; Quinn, B.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Katsanos, I.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA.
[Gershtein, Y.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Tully, C.] Princeton Univ, Princeton, NJ 08544 USA.
[Iashvili, I.; Kharchilava, A.; Kumar, A.; Zennamo, J.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Harel, A.; Petrillo, G.; Slattery, P.; Tsai, Y. -T.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Boline, D.; Chakrabarti, S.; Grannis, P. D.; Hobbs, J. D.; McCarthy, R.; Schamberger, R. D.; Tsybychev, D.; Ye, W.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
[Patwa, A.; Pleier, M. -A.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Snow, J.] Langston Univ, Langston, OK 73050 USA.
[Abbott, B.; Gutierrez, P.; Jayasinghe, A.; Severini, H.; Skubic, P.; Strauss, M.; Svoisky, P.] Univ Oklahoma, Norman, OK 73019 USA.
[Haley, J.; Hegab, H.; Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA.
[Schellman, H.] Oregon State Univ, Corvallis, OR 97331 USA.
[Cutts, D.; Heintz, U.; Narain, M.; Parihar, V.; Partridge, R.] Brown Univ, Providence, RI 02912 USA.
[Brandt, A.; Howley, I.; Pal, A.] Univ Texas Arlington, Arlington, TX 76019 USA.
[Das, A.; Ilchenko, Y.; Kehoe, R.; Liu, H.] Southern Methodist Univ, Dallas, TX 75275 USA.
[Chandra, A.; Corcoran, M.; Hogan, J.; Orduna, J.; Prewitt, M.] Rice Univ, Houston, TX 77005 USA.
[Bandurin, D. V.; Hirosky, R.; Li, H.; Mulhearn, M.; Nguyen, H. T.] Univ Virginia, Charlottesville, VA 22904 USA.
[Watts, G.] Univ Washington, Seattle, WA 98195 USA.
RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia.
RI Merkin, Mikhail/D-6809-2012; Dudko, Lev/D-7127-2012; Gutierrez,
Phillip/C-1161-2011; Li, Liang/O-1107-2015
OI Dudko, Lev/0000-0002-4462-3192; Li, Liang/0000-0001-6411-6107
FU Department of Energy (U.S.); National Science Foundation (U.S.);
Alternative Energies and Atomic Energy Commission (France); National
Center for Scientific Research/National Institute of Nuclear and
Particle Physics (France); Ministry of Education and Science of the
Russian Federation (Russia); National Research Center "Kurchatov
Institute" of the Russian Federation (Russia); Russian Foundation for
Basic Research (Russia); National Council for the Development of Science
and Technology (Brazil); Carlos Chagas Filho Foundation for the Support
of Research in the State of Rio de Janeiro (Brazil); Department of
Atomic Energy (India); Department of Science and Technology (India);
Administrative Department of Science, Technology and Innovation
(Colombia); National Council of Science and Technology (Mexico);
National Research Foundation of Korea (Korea); Foundation for
Fundamental Research on Matter (Netherlands); Science and Technology
Facilities Council (United Kingdom); Royal Society (United Kingdom);
Ministry of Education, Youth and Sports (Czech Republic);
Bundesministerium fur Bildung und Forschung (the Federal Ministry of
Education and Research) (Germany); Deutsche Forschungsgemeinschaft (the
German Research Foundation) (Germany); Science Foundation Ireland
(Ireland); Swedish Research Council (Sweden); China Academy of Sciences
(China); National Natural Science Foundation of China (China); Ministry
of Education and Science of Ukraine (Ukraine)
FX We thank the staffs at Fermilab and collaborating institutions, and we
acknowledge support from the Department of Energy and the National
Science Foundation (U.S.); the Alternative Energies and Atomic Energy
Commission and the National Center for Scientific Research/National
Institute of Nuclear and Particle Physics (France); the Ministry of
Education and Science of the Russian Federation, the National Research
Center "Kurchatov Institute" of the Russian Federation, and the Russian
Foundation for Basic Research (Russia); the National Council for the
Development of Science and Technology and the Carlos Chagas Filho
Foundation for the Support of Research in the State of Rio de Janeiro
(Brazil); the Department of Atomic Energy and the Department of Science
and Technology (India); the Administrative Department of Science,
Technology and Innovation (Colombia); the National Council of Science
and Technology (Mexico); the National Research Foundation of Korea
(Korea); the Foundation for Fundamental Research on Matter
(Netherlands); the Science and Technology Facilities Council and The
Royal Society (United Kingdom); the Ministry of Education, Youth and
Sports (Czech Republic); Bundesministerium fur Bildung und Forschung
(the Federal Ministry of Education and Research) and Deutsche
Forschungsgemeinschaft (the German Research Foundation) (Germany);
Science Foundation Ireland (Ireland); the Swedish Research Council
(Sweden); China Academy of Sciences and the National Natural Science
Foundation of China (China); and the Ministry of Education and Science
of Ukraine (Ukraine).
NR 15
TC 10
Z9 10
U1 1
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD DEC 2
PY 2015
VL 115
IS 23
AR 232001
DI 10.1103/PhysRevLett.115.232001
PG 8
WC Physics, Multidisciplinary
SC Physics
GA CX7KQ
UT WOS:000365881100005
PM 26684112
ER
PT J
AU Kharzeev, DE
Pisarski, RD
Yee, HU
AF Kharzeev, Dmitri E.
Pisarski, Robert D.
Yee, Ho-Ung
TI Universality of Plasmon Excitations in Dirac Semimetals
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID HOT GAUGE-THEORIES; CD3AS2; AMPLITUDES; MOBILITY
AB We investigate the properties of the collective plasmon excitations in Dirac semimetals by using the methods of relativistic field theory. We find a strong and narrow plasmon excitation whose frequency is in the terahertz (THz) range which may be important for practical applications. The properties of the plasmon appear universal for all Dirac semimetals, due to the large degeneracy of the quasiparticles and the small Fermi velocity, nu(F) << c. This universality is closely analogous to the phenomenon of "dimensional transmutation" that is responsible for the emergence of dimensionful scales in relativistic field theories such as quantum chromodynamics.
C1 [Kharzeev, Dmitri E.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Kharzeev, Dmitri E.; Pisarski, Robert D.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Pisarski, Robert D.; Yee, Ho-Ung] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Yee, Ho-Ung] Univ Illinois, Dept Phys, Chicago, IL 60607 USA.
RP Kharzeev, DE (reprint author), SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
FU U.S. Department of Energy [DE-FG- 88ER40388, DE-AC02-98CH10886]
FX We thank D. Son and M. Stephanov for discussions. This work was
supported in part by the U.S. Department of Energy under Contracts No.
DE-FG- 88ER40388 and No. DE-AC02-98CH10886.
NR 20
TC 3
Z9 3
U1 2
U2 19
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD DEC 2
PY 2015
VL 115
IS 23
AR 236402
DI 10.1103/PhysRevLett.115.236402
PG 5
WC Physics, Multidisciplinary
SC Physics
GA CX7KQ
UT WOS:000365881100011
PM 26684129
ER
PT J
AU Lv, YF
Wang, WL
Peng, JP
Ding, H
Wang, Y
Wang, LL
He, K
Ji, SH
Zhong, RD
Schneeloch, J
Gu, GD
Song, CL
Ma, XC
Xue, QK
AF Lv, Yan-Feng
Wang, Wen-Lin
Peng, Jun-Ping
Ding, Hao
Wang, Yang
Wang, Lili
He, Ke
Ji, Shuai-Hua
Zhong, Ruidan
Schneeloch, John
Gu, Gen-Da
Song, Can-Li
Ma, Xu-Cun
Xue, Qi-Kun
TI Mapping the Electronic Structure of Each Ingredient Oxide Layer of
High-T-c Cuprate Superconductor Bi2Sr2CaCu2O8+delta
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTIVITY; TUNNELING SPECTROSCOPY; SURFACE;
FILMS; GAPS
AB Understanding the mechanism of high transition temperature (T-c) superconductivity in cuprates has been hindered by the apparent complexity of their multilayered crystal structure. Using a cryogenic scanning tunneling microscopy (STM), we report on layer-by-layer probing of the electronic structures of all ingredient planes (BiO, SrO, CuO2) of Bi2Sr2CaCu2O8+delta superconductor prepared by argon-ion bombardment and annealing technique. We show that the well-known pseudogap (PG) feature observed by STM is inherently a property of the BiO planes and thus irrelevant directly to Cooper pairing. The SrO planes exhibit an unexpected van Hove singularity near the Fermi level, while the CuO2 planes are exclusively characterized by a smaller gap inside the PG. The small gap becomes invisible near T-c, which we identify as the superconducting gap. The above results constitute severe constraints on any microscopic model for high T-c superconductivity in cuprates.
C1 [Lv, Yan-Feng; Wang, Wen-Lin; Peng, Jun-Ping; Ding, Hao; Wang, Yang; Wang, Lili; He, Ke; Ji, Shuai-Hua; Song, Can-Li; Ma, Xu-Cun; Xue, Qi-Kun] Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China.
[Wang, Lili; He, Ke; Ji, Shuai-Hua; Song, Can-Li; Ma, Xu-Cun; Xue, Qi-Kun] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China.
[Zhong, Ruidan; Schneeloch, John; Gu, Gen-Da] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RP Lv, YF (reprint author), Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China.
EM clsong07@mail.tsinghua.edu.cn; xucunma@mail.tsinghua.edu.cn;
qkxue@mail.tsinghua.edu.cn
RI Zhong, Ruidan/D-5296-2013; Ding, Hao/H-8401-2013; Ji,
Shuaihua/F-1743-2014
OI Zhong, Ruidan/0000-0003-1652-9454; Ding, Hao/0000-0001-9635-3940;
FU National Science Foundation; Ministry of Science and Technology of
China; Office of Basic Energy Sciences (BES), Division of Materials
Sciences and Engineering, U.S. Department of Energy (DOE)
[DE-SC00112704]
FX This work was financially supported by National Science Foundation and
Ministry of Science and Technology of China. Work at Brookhaven was
supported by the Office of Basic Energy Sciences (BES), Division of
Materials Sciences and Engineering, U.S. Department of Energy (DOE),
through Contract No. DE-SC00112704.
NR 31
TC 5
Z9 5
U1 14
U2 59
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD DEC 2
PY 2015
VL 115
IS 23
AR 237002
DI 10.1103/PhysRevLett.115.237002
PG 5
WC Physics, Multidisciplinary
SC Physics
GA CX7KQ
UT WOS:000365881100015
PM 26684137
ER
PT J
AU Burnet, MC
Dohnalkova, AC
Neumann, AP
Lipton, MS
Smith, RD
Suen, G
Callister, SJ
AF Burnet, Meagan C.
Dohnalkova, Alice C.
Neumann, Anthony P.
Lipton, Mary S.
Smith, Richard D.
Suen, Garret
Callister, Stephen J.
TI Evaluating Models of Cellulose Degradation by Fibrobacter succinogenes
S85
SO PLOS ONE
LA English
DT Article
ID BACTERIUM BACTEROIDES-SUCCINOGENES; RUMINOCOCCUS-ALBUS; RUMEN BACTERIA;
ADHESION; MEMBRANE; PROTEINS; IDENTIFICATION; COMMUNITY; PROTEOME;
CULTURES
AB Fibrobacter succinogenes S85 is an anaerobic non-cellulosome utilizing cellulolytic bacterium originally isolated from the cow rumen microbial community. Efforts to elucidate its cellulolytic machinery have resulted in the proposal of numerous models which involve cell-surface attachment via a combination of cellulose-binding fibro-slime proteins and pili, the production of cellulolytic vesicles, and the entry of cellulose fibers into the periplasmic space. Here, we used a combination of RNA-sequencing, proteomics, and transmission electron microscopy (TEM) to further clarify the cellulolytic mechanism of F. succinogenes. Our RNA-sequence analysis shows that genes encoding type II and III secretion systems, fibro-slime proteins, and pili are differentially expressed on cellulose, relative to glucose. A subcellular fractionation of cells grown on cellulose revealed that carbohydrate active enzymes associated with cellulose deconstruction and fibro-slime proteins were greater in the extracellular medium, as compared to the periplasm and outer membrane fractions. TEMs of samples harvested at mid-exponential and stationary phases of growth on cellulose and glucose showed the presence of grooves in the cellulose between the bacterial cells and substrate, suggesting enzymes work extracellularly for cellulose degradation. Membrane vesicles were only observed in stationary phase cultures grown on cellulose. These results provide evidence that F. succinogenes attaches to cellulose fibers using fibro-slime and pili, produces cellulases, such as endoglucanases, that are secreted extracellularly using type II and III secretion systems, and degrades the cellulose into cellodextrins that are then imported back into the periplasm for further digestion by beta-glucanases and other cellulases.
C1 [Burnet, Meagan C.; Lipton, Mary S.; Smith, Richard D.; Callister, Stephen J.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
[Dohnalkova, Alice C.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
[Neumann, Anthony P.; Suen, Garret] Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA.
RP Suen, G (reprint author), Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA.
EM gsuen@wisc.edu; stephen.callister@pnl.gov
RI Smith, Richard/J-3664-2012
OI Smith, Richard/0000-0002-2381-2349
FU Department of Energy's (DOE) Office of Biological and Environmental
Research (OBER) Pan-omics program; DOE [DE-AC05-76RL01830]; DOE Early
Career Research Program Award [DE-SC0008104]; National Institute of
Allergy and Infectious Diseases of the National Institutes of Health
[T32AI55397]
FX A portion of this research was funded by the Department of Energy's
(DOE) Office of Biological and Environmental Research (OBER) Pan-omics
program and performed in the Environmental Molecular Sciences Laboratory
at Pacific Northwest National Laboratory (PNNL). The Environmental
Molecular Sciences Laboratory is a U.S. Department of Energy (DOE)
Office of Biological and Environmental Research national scientific user
facility on the PNNL campus. PNNL is a multiprogram national laboratory
operated by Battelle for the DOE under contract DE-AC05-76RL01830. This
work was also supported by a DOE Early Career Research Program Award
DE-SC0008104 to Garret Suen. Anthony P. Neumann was supported in part by
a traineeship from the National Institute of Allergy and Infectious
Diseases of the National Institutes of Health under Award Number
T32AI55397.
NR 31
TC 2
Z9 2
U1 13
U2 30
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD DEC 2
PY 2015
VL 10
IS 12
AR e0143809
DI 10.1371/journal.pone.0143809
PG 19
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA CX8BI
UT WOS:000365926300103
PM 26629814
ER
PT J
AU Gong, C
Ruzmetov, D
Pearse, A
Ma, DK
Munday, JN
Rubloff, G
Talin, AA
Leite, MS
AF Gong, Chen
Ruzmetov, Dmitry
Pearse, Alexander
Ma, Dakang
Munday, Jeremy N.
Rubloff, Gary
Talin, A. Alec
Leite, Marina S.
TI Surface/Interface Effects on High-Performance Thin-Film All-Solid-State
Li-Ion Batteries
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE energy storage; all-solid-state batteries; thin-films; aluminum; silicon
ID TRANSMISSION ELECTRON-MICROSCOPY; ELECTROCHEMICAL PERFORMANCE; LITHIUM
BATTERIES; ANODES; SILICON; LITHIATION; STABILITY; OXIDATION; ALUMINUM;
CARBON
AB The further development of all-solid-state batteries is still limited by the understanding/engineering of the interfaces formed upon cycling. Here, we correlate the morphological, chemical, and electrical changes of the surface of thin-film devices with Al negative electrodes. The stable Al-Li-O alloy formed at the stress-free surface of the electrode causes rapid capacity fade, from 48.0 to 41.5 mu Ah/cm(2) in two cycles. Surprisingly, the addition of a Cu capping layer is insufficient to prevent the device degradation. Nevertheless, Si electrodes present extremely stable cycling, maintaining >92% of its capacity after 100 cycles, with average Coulombic efficiency of 98%.
C1 [Gong, Chen; Leite, Marina S.] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
[Gong, Chen; Pearse, Alexander; Ma, Dakang; Munday, Jeremy N.; Rubloff, Gary; Leite, Marina S.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA.
[Ma, Dakang; Munday, Jeremy N.] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA.
[Rubloff, Gary] Univ Maryland, Syst Res Inst, College Pk, MD 20742 USA.
[Ruzmetov, Dmitry] US Army Res Lab, Sensors & Electron Devices Directorate, Adelphi, MD 20783 USA.
[Ruzmetov, Dmitry] NIST, Mat Measurement Lab, Gaithersburg, MD 20899 USA.
[Talin, A. Alec] Sandia Natl Labs, Livermore, CA 94550 USA.
RP Leite, MS (reprint author), Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
EM aatalin@sandia.gov; mleite@umd.edu
RI Munday, Jeremy/E-6512-2016; Gong, Chen/R-9309-2016; Pearse,
Alexander/B-2792-2017
OI Munday, Jeremy/0000-0002-0881-9876; Gong, Chen/0000-0003-3302-7675;
FU School of Engineering at the University of Maryland; Minta Martin Award;
Laboratory Directed Research and Development Program at Sandia National
Laboratories; U.S. DOE National Nuclear Security Administration
[DE-AC04-94AL85000]; U.S. Department of Energy, Office of Science, and
Office of Basic Energy Sciences [DESC0001160]
FX MSL and JNM thank the financial support from the School of Engineering
at the University of Maryland, and the Minta Martin Award. CG
acknowledge the University of Maryland 2015 Graduate School's Summer
Research Fellowship program. This work was partially supported by the
Laboratory Directed Research and Development Program at Sandia National
Laboratories. Sandia is a multiprogram laboratory operated by Sandia
Corporation, a Lockheed Martin Company, for the U.S. DOE National
Nuclear Security Administration under Contract DE-AC04-94AL85000.
Nanostructures for Electrical Energy Storage (NEES), an Energy Frontier
Research Center funded by the U.S. Department of Energy, Office of
Science, and Office of Basic Energy Sciences under award DESC0001160,
provided partial support to AAT and GR for data analysis and manuscript
authoring, and to AP for carrying out XPS experiments and analysis.
NR 30
TC 4
Z9 4
U1 20
U2 122
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD DEC 2
PY 2015
VL 7
IS 47
BP 26007
EP 26011
DI 10.1021/acsami.5b07058
PG 5
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA CX8DB
UT WOS:000365931700001
PM 26436529
ER
PT J
AU Liu, HQ
Adzic, RR
Wong, SS
AF Liu, Haiqing
Adzic, Radoslav R.
Wong, Stanislaus S.
TI Multifunctional Ultrathin PdxCu1-x and Pt similar to PdxCu1-x
One-Dimensional Nanowire Motifs for Various Small Molecule Oxidation
Reactions
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE PdCu ultrathin nanowires; Pt monolayer; formic acid oxidation; methanol
oxidation; ethanol oxidation
ID FORMIC-ACID OXIDATION; ENHANCED ELECTROCATALYTIC PERFORMANCE; PLATINUM
MONOLAYER ELECTROCATALYSTS; OXYGEN REDUCTION REACTION; NANOPOROUS PDCU
ALLOY; ALKALINE FUEL-CELL; ETHANOL OXIDATION; FACILE SYNTHESIS; METHANOL
ELECTROOXIDATION; PT-CO
AB Developing novel electrocatalysts for small molecule oxidation processes, including formic acid oxidation (FAOR), methanol oxidation reaction (MOR), and ethanol oxidation reaction (EOR), denoting the key anodic reactions for their respective fuel cell configurations, is a significant and relevant theme of recent efforts in the field. Herein, in this report, we demonstrated a concerted effort to couple and combine the benefits of small size, anisotropic morphology, and tunable chemical composition in order to devise a novel "family" of functional architectures. In particular, we have fabricated not only ultrathin 1-D Pd1-xCux alloys but also Pt-coated Pd1-xCux (i.e., Pt similar to Pd1-xCux; herein the similar to indicates an intimate association, but not necessarily actual bond formation, between the inner bimetallic core and the Pt outer shell) core shell hierarchical nanostructures with readily tunable chemical compositions by utilizing a facile, surfactant-based, wet chemical synthesis coupled with a Cu underpotential deposition technique. Our main finding is that our series of as-prepared nanowires are functionally flexible. More precisely, we demonstrate that various examples within this "family" of structural motifs can be tailored for exceptional activity with all 3 of these important electrocatalytic reactions. In particular, we note that our series of Pd1-xCux nanowires all exhibit enhanced FAOR activities as compared with not only analogous Pd ultrathin nanowires but also commercial Pt and Pd standards, with Pd9Cu representing the "optimal" composition. Moreover, our group of Pt similar to Pd1-xCux nanowires consistently outperformed not only commercial Pt NPs but also ultrathin Pt nanowires by several fold orders of magnitude for both the MOR and EOR reactions in alkaline media. The variation of the MOR and EOR performance with the chemical composition of our ultrathin Pt similar to Pd1-xCux nanowires was also discussed.
C1 [Liu, Haiqing; Wong, Stanislaus S.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
[Adzic, Radoslav R.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Wong, Stanislaus S.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RP Wong, SS (reprint author), SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
EM stanislaus.wong@stonybrook.edu
FU U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and
Engineering Division; U.S. Department of Energy [DE-AC02-98CH10886,
DE-SC-00112704]
FX Research for all authors was supported by the U.S. Department of Energy,
Basic Energy Sciences, Materials Sciences and Engineering Division.
Experiments for this manuscript were performed in part at the Center for
Functional Nanomaterials located at Brookhaven National Laboratory,
which is supported by the U.S. Department of Energy under Contracts
DE-AC02-98CH10886 and DE-SC-00112704.
NR 63
TC 16
Z9 16
U1 27
U2 90
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD DEC 2
PY 2015
VL 7
IS 47
BP 26145
EP 26157
DI 10.1021/acsami.5b07964
PG 13
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA CX8DB
UT WOS:000365931700019
PM 26580482
ER
PT J
AU Tian, LL
Zhang, MJ
Wu, C
Wei, Y
Zheng, JX
Lin, LP
Lu, J
Amine, K
Zhuang, QC
Pan, F
AF Tian, Lei-Lei
Zhang, Ming-Jian
Wu, Chao
Wei, Yi
Zheng, Jia-Xin
Lin, Ling-Piao
Lu, Jun
Amine, Khalil
Zhuang, Quan-Chao
Pan, Feng
TI gamma-Fe2O3 Nanocrystalline Microspheres with Hybrid Behavior of
Battery-Supercapacitor for Superior Lithium Storage
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE ferric oxide; rate performance; interfacial capacitance; lithium ion
battery; supercapacitor
ID HIGH-PERFORMANCE ANODE; NITROGEN-DOPED GRAPHENE; ION BATTERIES;
ELECTROCHEMICAL PROPERTIES; FE2O3 NANOPARTICLES; XPS SPECTRA;
ALPHA-FE2O3; ELECTRODE; CARBON; NANOTUBES
AB Maghemite (gamma-Fe2O3) nanocrystalline microspheres (MNMs) self-assembled with 52 nm nanocrystals bridged with FeOOH around grain boundaries were formed by solvothermal reaction and thermal oxidation. The unique architecture endows the MNMs with the lithium storage behavior of a hybrid battery-supercapacitor electrode: initial charge capacity of 1060 mAh g(-1) at the 100 mA g(-1) rate, stable cyclic capacity of 1077.9 mAh g(-1) at the same rate after 140 cycles, and rate capability of 538.8 mAh g(-1) at 2400 mA g(-1) This outstanding performance was attributed to the nanocrystal superiority, which shortens the Li+ diffusion paths. The mechanism of this hybrid anode material was investigated with experimental measurements and structural analysis. The results indicate that at the first discharge, the MNM nanocrystal microsphere, whose structure can buffer the volume change that occurs during lithiation/delithiation, goes through four stages: Li+ insertion in cation vacancies, spinel-to-rocksalt transformation, Li+ intercalation of Li1.75+xFe2O3 nanocrystals, and interfacial Li storage around nanocrystal boundaries. Only the latter two stages were reversible at and after the second charging/discharging cycle, exhibiting the hybrid behavior of a battery-supercapacitor with superior lithium storage.
C1 [Tian, Lei-Lei; Zhang, Ming-Jian; Wei, Yi; Zheng, Jia-Xin; Lin, Ling-Piao; Pan, Feng] Peking Univ, Sch Adv Mat, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China.
[Tian, Lei-Lei; Wu, Chao; Zhuang, Quan-Chao] China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Peoples R China.
[Lu, Jun; Amine, Khalil] Argonne Natl Lab, Chem Sci & Engn Div, Electrochem Technol Program, Argonne, IL 60439 USA.
RP Zhuang, QC (reprint author), China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Peoples R China.
EM zhuangquanchao@126.com; panfeng@pkusz.edu.cn
RI Tian, Lei-Lei/H-9590-2012
OI Tian, Lei-Lei/0000-0001-5987-2944
FU National Project for EV Batteries [20121110]; Guangdong Innovation Team
Project [2013N080]; Shenzhen Science and Technology Research Grant
[ZDSY20130331145131323, CXZZ20120829172325895, JCYJ20150629144526408]
FX The authors acknowledge financial support from the Fund from the
National Project for EV Batteries (20121110, Optimum Nano, Shenzhen),
the Guangdong Innovation Team Project (No. 2013N080), and the Shenzhen
Science and Technology Research Grant (No. ZDSY20130331145131323,
CXZZ20120829172325895, JCYJ20150629144526408). The authors are also
grateful to the Test Engineer Hai-Wen Zhang for assistance with TG-DSC
and nitrogen adsorption measurements.
NR 42
TC 12
Z9 12
U1 36
U2 172
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD DEC 2
PY 2015
VL 7
IS 47
BP 26284
EP 26290
DI 10.1021/acsami.5b08756
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA CX8DB
UT WOS:000365931700033
PM 26548376
ER
PT J
AU de Lomana, ALG
Schauble, S
Valenzuela, J
Imam, S
Carter, W
Bilgin, DD
Yohn, CB
Turkarslan, S
Reiss, DJ
Orellana, MV
Price, ND
Baliga, NS
AF de Lomana, Adrian Lopez Garcia
Schaeuble, Sascha
Valenzuela, Jacob
Imam, Saheed
Carter, Warren
Bilgin, Damla D.
Yohn, Christopher B.
Turkarslan, Serdar
Reiss, David J.
Orellana, Monica V.
Price, Nathan D.
Baliga, Nitin S.
TI Transcriptional program for nitrogen starvation-induced lipid
accumulation in Chlamydomonas reinhardtii
SO BIOTECHNOLOGY FOR BIOFUELS
LA English
DT Article
DE Network modeling; Phenotypic transition; Transcriptional regulatory
network; Metabolic network; Lipid accumulation; Chlamydomonas
reinhardtii
ID DIATOM PHAEODACTYLUM-TRICORNUTUM; GLOBAL GENE-REGULATION; SEED OIL
ACCUMULATION; FLUX BALANCE ANALYSIS; TRIACYLGLYCEROL ACCUMULATION;
REGULATORY NETWORKS; ESCHERICHIA-COLI; BINDING-PROTEIN;
GLYCEROL-3-PHOSPHATE DEHYDROGENASE; MYCOBACTERIUM-TUBERCULOSIS
AB Background: Algae accumulate lipids to endure different kinds of environmental stresses including macronutrient starvation. Although this response has been extensively studied, an in depth understanding of the transcriptional regulatory network (TRN) that controls the transition into lipid accumulation remains elusive. In this study, we used a systems biology approach to elucidate the transcriptional program that coordinates the nitrogen starvation-induced metabolic readjustments that drive lipid accumulation in Chlamydomonas reinhardtii.
Results: We demonstrate that nitrogen starvation triggered differential regulation of 2147 transcripts, which were co-regulated in 215 distinct modules and temporally ordered as 31 transcriptional waves. An early-stage response was triggered within 12 min that initiated growth arrest through activation of key signaling pathways, while simultaneously preparing the intracellular environment for later stages by modulating transport processes and ubiquitinmediated protein degradation. Subsequently, central metabolism and carbon fixation were remodeled to trigger the accumulation of triacylglycerols. Further analysis revealed that these waves of genome-wide transcriptional events were coordinated by a regulatory program orchestrated by at least 17 transcriptional regulators, many of which had not been previously implicated in this process. We demonstrate that the TRN coordinates transcriptional downregulation of 57 metabolic enzymes across a period of nearly 4 h to drive an increase in lipid content per unit biomass. Notably, this TRN appears to also drive lipid accumulation during sulfur starvation, while phosphorus starvation induces a different regulatory program. The TRN model described here is available as a community-wide web-resource at http://networks.systemsbiology.net/chlamy-portal.
Conclusions: In this work, we have uncovered a comprehensive mechanistic model of the TRN controlling the transition from N starvation to lipid accumulation. The program coordinates sequentially ordered transcriptional waves that simultaneously arrest growth and lead to lipid accumulation. This study has generated predictive tools that will aid in devising strategies for the rational manipulation of regulatory and metabolic networks for better biofuel and biomass production.
C1 [de Lomana, Adrian Lopez Garcia; Schaeuble, Sascha; Valenzuela, Jacob; Imam, Saheed; Carter, Warren; Turkarslan, Serdar; Reiss, David J.; Orellana, Monica V.; Price, Nathan D.; Baliga, Nitin S.] Inst Syst Biol, Seattle, WA 98109 USA.
[Schaeuble, Sascha] Univ Jena, Jena Univ Language & Informat Engn JULIE Lab, Jena, Germany.
[Schaeuble, Sascha] Univ Jena, Res Grp Theoret Syst Biol, Jena, Germany.
[Bilgin, Damla D.; Yohn, Christopher B.] Sapphire Energy Inc, San Diego, CA USA.
[Orellana, Monica V.] Univ Washington, Polar Sci Ctr, Seattle, WA 98195 USA.
[Price, Nathan D.] Univ Washington, Dept Bioengn, Seattle, WA 98195 USA.
[Price, Nathan D.] Univ Washington, Dept Comp Sci & Engn, Seattle, WA 98195 USA.
[Baliga, Nitin S.] Univ Washington, Dept Biol, Seattle, WA 98195 USA.
[Baliga, Nitin S.] Univ Washington, Dept Microbiol, Seattle, WA 98195 USA.
[Price, Nathan D.; Baliga, Nitin S.] Univ Washington, Mol & Cellular Biol Program, Seattle, WA 98195 USA.
[Baliga, Nitin S.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Baliga, NS (reprint author), Inst Syst Biol, 401 Terry Ave N, Seattle, WA 98109 USA.
EM nbaliga@sytemsbiology.org
OI Yohn, Christopher/0000-0002-5937-8070
FU DOE-ABY [DEEE0006315]; NIH Center for Systems Biology [P50 GM076547];
Camille Dreyfus Teacher-Scholar program; German Ministry for Research
and Education within the framework of the GerontoSys [FKZ 0315581D];
e:Med initiative [FKZ 01ZX1402C]
FX We would like to thank Julie Kerns for a careful reading of the
manuscript and for useful comments. We would also like to thank Gustavo
Glusman, Max Robinson and Chris Lausted for useful comments. This work
was partially funded by DOE-ABY (DEEE0006315) (SI, JV, ALGL, WC, NSB,
NDP), NIH Center for Systems Biology (grant P50 GM076547) (ALGL, NSB,
NDP) and the Camille Dreyfus Teacher-Scholar program (NDP). We also
acknowledge financial support from the German Ministry for Research and
Education within the framework of the GerontoSys (grant FKZ 0315581D)
and e:Med (grant FKZ 01ZX1402C) initiative (SS).
NR 110
TC 2
Z9 2
U1 9
U2 45
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1754-6834
J9 BIOTECHNOL BIOFUELS
JI Biotechnol. Biofuels
PD DEC 2
PY 2015
VL 8
AR 207
DI 10.1186/s13068-015-0391-z
PG 18
WC Biotechnology & Applied Microbiology; Energy & Fuels
SC Biotechnology & Applied Microbiology; Energy & Fuels
GA CX6AZ
UT WOS:000365784900003
ER
PT J
AU Yu, CW
Reddy, AP
Simmons, CW
Simmons, BA
Singer, SW
VanderGheynst, JS
AF Yu, Chaowei
Reddy, Amitha P.
Simmons, Christopher W.
Simmons, Blake A.
Singer, Steven W.
VanderGheynst, Jean S.
TI Preservation of microbial communities enriched on lignocellulose under
thermophilic and high-solid conditions
SO BIOTECHNOLOGY FOR BIOFUELS
LA English
DT Article
DE Biological lignocellulose deconstruction; Cryopreservation; Microbial
community enrichment
ID SP-NOV.; BACTERIAL COMMUNITY; CELLULOLYTIC BACTERIA; RICE STRAW; GEN.
NOV.; SOIL; PRETREATMENT; STORAGE; SAMPLES; IDENTIFICATION
AB Background: Microbial communities enriched from diverse environments have shown considerable promise for the targeted discovery of microorganisms and enzymes for bioconversion of lignocellulose to liquid fuels. While preservation of microbial communities is important for commercialization and research, few studies have examined storage conditions ideal for preservation. The goal of this study was to evaluate the impact of preservation method on composition of microbial communities enriched on switchgrass before and after storage. The enrichments were completed in a high-solid and aerobic environment at 55 degrees C. Community composition was examined for each enrichment to determine when a stable community was achieved. Preservation methods included cryopreservation with the cryoprotective agents DMSO and glycerol, and cryopreservation without cryoprotective agents. Revived communities were examined for their ability to decompose switchgrass under high-solid and thermophilic conditions.
Results: High-throughput 16S rRNA gene sequencing of DNA extracted from enrichment samples showed that the majority of the shift in composition of the switchgrass-degrading community occurred during the initial three 2-week enrichments. Shifts in community structure upon storage occurred in all cryopreserved samples. Storage in liquid nitrogen in the absence of cryoprotectant resulted in variable preservation of dominant microorganisms in enriched samples. Cryopreservation with either DMSO or glycerol provided consistent and equivalent preservation of dominant organisms.
Conclusions: A stable switchgrass-degrading microbial community was achieved after three 2-week enrichments. Dominant microorganisms were preserved equally well with DMSO and glycerol. DMSO-preserved communities required more incubation time upon revival to achieve pre-storage activity levels during high-solid thermophilic cultivation on switchgrass. Despite shifts in the community with storage, the samples were active upon revival under thermophilic and high-solid conditions. The results suggest that the presence of microorganisms may be more important than their relative abundance in retaining an active microbial community.
C1 [Yu, Chaowei; Reddy, Amitha P.; VanderGheynst, Jean S.] Univ Calif Davis, Dept Biol & Agr Engn, Davis, CA 95616 USA.
[Reddy, Amitha P.; Simmons, Christopher W.; Simmons, Blake A.; Singer, Steven W.; VanderGheynst, Jean S.] Joint BioEnergy Inst, Emeryville, CA 94608 USA.
[Simmons, Christopher W.] Univ Calif Davis, Dept Food Sci & Technol, Davis, CA 95616 USA.
[Simmons, Blake A.] Sandia Natl Labs, Biol & Mat Sci Ctr, Livermore, CA 94551 USA.
[Singer, Steven W.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP VanderGheynst, JS (reprint author), Joint BioEnergy Inst, Emeryville, CA 94608 USA.
EM jsvander@ucdavis.edu
OI VanderGheynst, Jean/0000-0002-1455-8254
FU UC Laboratory Fees Research Program [12-LR-237496]; National Institute
of Food and Agriculture project [CA-D-BAE-2228-RR]; Joint BioEnergy
Institute, US Department of Energy, Office of Science, Office of
Biological and Environmental Research [DE-AC02-05CH11231]; Office of
Science of the U.S. Department of Energy [DE-AC02-05CH11231]
FX We thank Garren Lewis and Toni Leong for assistance with bioreactors.
This work was supported by the UC Laboratory Fees Research Program
#12-LR-237496, National Institute of Food and Agriculture project
CA-D-BAE-2228-RR and the Joint BioEnergy Institute, supported by the US
Department of Energy, Office of Science, Office of Biological and
Environmental Research, through contract DE-AC02-05CH11231 between
Lawrence Berkeley National Laboratory and the US Department of Energy.
Sequencing was conducted by the Joint Genome Institute which is
supported by the Office of Science of the U.S. Department of Energy
under Contract No. DE-AC02-05CH11231.
NR 69
TC 3
Z9 3
U1 5
U2 17
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1754-6834
J9 BIOTECHNOL BIOFUELS
JI Biotechnol. Biofuels
PD DEC 2
PY 2015
VL 8
AR 206
DI 10.1186/s13068-015-0392-y
PG 13
WC Biotechnology & Applied Microbiology; Energy & Fuels
SC Biotechnology & Applied Microbiology; Energy & Fuels
GA CX6AZ
UT WOS:000365784900002
PM 26633993
ER
PT J
AU Li, X
Dutta, S
AF Li, Xuan
Dutta, Sourav
TI Extracting molecular potentials from incomplete spectroscopic
information
SO MOLECULAR PHYSICS
LA English
DT Article
DE molecular potential; spectroscopy; inversion method; fluorescence line
positions; fluorescence strengths; insufficient input
ID EXCITED-STATE POTENTIALS
AB We extend our recently developed inversion method to extract excited-state potentials from fluorescence line positions and line strengths. We consider a previous limitation of the method arising due to insufficient input data in cases where the relatively weaker emission data are not experimentally available. We develop a solution to this problem by regenerating' these weak transition lines via applying a model potential, e.g. a Morse potential. The result of this procedure, illustrated for the Q-branch emission from the lowest three vibrational levels of the B((1)) state of LiRb, is shown to have an error of 0.29cm(-1) in the classically allowed region and a global error of 5.67 cm(-1) for V E( = 10). The robustness of this procedure is also demonstrated by considering the statistical error in the measured line intensities.
C1 [Li, Xuan] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Chem Sci & Ultrafast Xray Sci Lab, Berkeley, CA 94720 USA.
[Dutta, Sourav] Raman Res Inst, Bangalore 560080, Karnataka, India.
RP Li, X (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Chem Sci & Ultrafast Xray Sci Lab, Berkeley, CA 94720 USA.
EM xuanli@lbl.gov
RI Dutta, Sourav/C-4533-2012
OI Dutta, Sourav/0000-0001-7329-6306
NR 16
TC 0
Z9 0
U1 1
U2 7
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0026-8976
EI 1362-3028
J9 MOL PHYS
JI Mol. Phys.
PD DEC 2
PY 2015
VL 113
IS 23
BP 3854
EP 3858
DI 10.1080/00268976.2015.1071892
PG 5
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA CX4CM
UT WOS:000365645800023
ER
PT J
AU Kim, MG
Wang, M
Tucker, GS
Valdivia, PN
Abernathy, DL
Chi, S
Christianson, AD
Aczel, AA
Hong, T
Heitmann, TW
Ran, S
Canfield, PC
Bourret-Courchesne, ED
Kreyssig, A
Lee, DH
Goldman, AI
McQueeney, RJ
Birgeneau, RJ
AF Kim, M. G.
Wang, M.
Tucker, G. S.
Valdivia, P. N.
Abernathy, D. L.
Chi, Songxue
Christianson, A. D.
Aczel, A. A.
Hong, T.
Heitmann, T. W.
Ran, S.
Canfield, P. C.
Bourret-Courchesne, E. D.
Kreyssig, A.
Lee, D. H.
Goldman, A. I.
McQueeney, R. J.
Birgeneau, R. J.
TI Spin dynamics near a putative antiferromagnetic quantum critical point
in Cu-substituted BaFe2As2 and its relation to high-temperature
superconductivity
SO PHYSICAL REVIEW B
LA English
DT Article
ID IRON-BASED SUPERCONDUCTORS; FERMI-LIQUID BEHAVIOR; MAGNETIC EXCITATIONS;
PAIRING MECHANISM; KONDO DISORDER; TRANSITION; UCU5-XPDX; SYSTEMS; STATE
AB We present the results of elastic and inelastic neutron scattering measurements on nonsuperconducting Ba(Fe0.957Cu0.043)(2)As-2, a composition close to a quantum critical point between antiferromagnetic (AFM) ordered and paramagnetic phases. By comparing these results with the spin fluctuations in the low-Cu composition as well as the parent compound BaFe2As2 and superconducting Ba(Fe1-xNix)(2)As-2 compounds, we demonstrate that paramagnon-like spin fluctuations are evident in the antiferromagnetically ordered state of Ba(Fe0.957Cu0.043)(2)As-2, which is distinct from the AFM-like spin fluctuations in the superconducting compounds. Our observations suggest that Cu substitution decouples the interaction between quasiparticles and the spin fluctuations. We also show that the spin-spin correlation length xi(T) increases rapidly as the temperature is lowered and find omega/T scaling behavior, the hallmark of quantum criticality, at an antiferromagnetic quantum critical point.
C1 [Kim, M. G.; Bourret-Courchesne, E. D.; Lee, D. H.; Birgeneau, R. J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Wang, M.; Lee, D. H.; Birgeneau, R. J.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Tucker, G. S.; Ran, S.; Canfield, P. C.; Kreyssig, A.; Goldman, A. I.; McQueeney, R. J.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Tucker, G. S.; Ran, S.; Canfield, P. C.; Kreyssig, A.; Goldman, A. I.; McQueeney, R. J.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Valdivia, P. N.; Birgeneau, R. J.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Abernathy, D. L.; Chi, Songxue; Christianson, A. D.; Aczel, A. A.; Hong, T.] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
[Heitmann, T. W.] Univ Missouri, Missouri Res Reactor, Columbia, MO 65211 USA.
RP Kim, MG (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM mgkim@lbl.gov
RI McQueeney, Robert/A-2864-2016; christianson, andrew/A-3277-2016; Hong,
Tao/F-8166-2010; Chi, Songxue/A-6713-2013; Aczel, Adam/A-6247-2016;
Abernathy, Douglas/A-3038-2012; WANG, MENG/E-6595-2012; Kim, Min
Gyu/B-8637-2012; BL18, ARCS/A-3000-2012
OI McQueeney, Robert/0000-0003-0718-5602; christianson,
andrew/0000-0003-3369-5884; Hong, Tao/0000-0002-0161-8588; Chi,
Songxue/0000-0002-3851-9153; Aczel, Adam/0000-0003-1964-1943; Abernathy,
Douglas/0000-0002-3533-003X; WANG, MENG/0000-0002-8232-2331; Kim, Min
Gyu/0000-0001-7676-454X;
FU US Department of Energy (DOE), Office of Basic Energy Sciences,
Materials Sciences and Engineering Division [DE-AC02-05CH11231];
Department of Energy, Basic Energy Sciences, Division of Materials
Sciences and Engineering [DE-AC02-07CH11358]; Scientific User Facilities
Division, Office of Basic Energy Sciences, U.S. Department of Energy
FX The work at the Lawrence Berkeley National Laboratory was supported by
the US Department of Energy (DOE), Office of Basic Energy Sciences,
Materials Sciences and Engineering Division, under Contract No.
DE-AC02-05CH11231. The work at the Ames Laboratory was supported by the
Department of Energy, Basic Energy Sciences, Division of Materials
Sciences and Engineering, under Contract No. DE-AC02-07CH11358. Research
conducted at ORNL's HFIR and SNS was sponsored by the Scientific User
Facilities Division, Office of Basic Energy Sciences, U.S. Department of
Energy.
NR 64
TC 2
Z9 2
U1 3
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD DEC 2
PY 2015
VL 92
IS 21
AR 214404
DI 10.1103/PhysRevB.92.214404
PG 10
WC Physics, Condensed Matter
SC Physics
GA CX5YG
UT WOS:000365777800004
ER
PT J
AU Singh, S
Xiong, J
Chen, AP
Fitzsimmons, MR
Jia, QX
AF Singh, Surendra
Xiong, J.
Chen, A. P.
Fitzsimmons, M. R.
Jia, Q. X.
TI Field-dependent magnetization of BiFeO3 in an ultrathin
La0.7Sr0.3MnO3/BiFeO3 superlattice
SO PHYSICAL REVIEW B
LA English
DT Article
ID THIN-FILM HETEROSTRUCTURES; OXIDE INTERFACES
AB We report the observation of field-dependent magnetization of BiFeO3 (BFO) in an ultrathin BFO/La0.7Sr0.3MnO3 (LSMO) superlattice using polarized neutron reflectivity (PNR). Our PNR results indicate parallel alignment of magnetization across BFO/LSMO interfaces. The study showed an increase in average magnetization of the BFO layer on increasing applied magnetic field at 10 K, similar to the ferromagnetic nature of LSMO. We obtained a saturation magnetization of 110 +/- 15 kA/m (similar to 0.8 mu(B)/Fe) for an ultrathin BFO layer (similar to 2 unit cells) sandwiched between ultrathin LSMO layers (similar to 2 unit cells), which is much higher than the canted moment (0.03 mu(B)/Fe) in the bulk BFO.
C1 [Singh, Surendra] Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400094, Maharashtra, India.
[Xiong, J.; Chen, A. P.; Jia, Q. X.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA.
[Fitzsimmons, M. R.] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
RP Singh, S (reprint author), Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400094, Maharashtra, India.
EM surendra@barc.gov.in
RI Chen, Aiping/F-3212-2011
OI Chen, Aiping/0000-0003-2639-2797
FU U.S. Department of Energy through the LANL/LDRD program; National
Nuclear Security Administration of the U.S. Department of Energy
[DE-AC52-06NA25396]; Laboratory Directed Research and Development
Program of Oak Ridge National Laboratory
FX This work was supported by the U.S. Department of Energy through the
LANL/LDRD program and was performed, in part, at the Center for
Integrated Nanotechnologies (CINT), a U.S. Department of Energy, Office
of Basic Energy Sciences user facility. Los Alamos National Laboratory,
an affirmative action equal opportunity employer, is operated by Los
Alamos National Security, LLC, for the National Nuclear Security
Administration of the U.S. Department of Energy under Contract No.
DE-AC52-06NA25396. This research was partially supported by the
Laboratory Directed Research and Development Program of Oak Ridge
National Laboratory, managed by UT-Battelle, LLC, for the U.S.
Department of Energy.
NR 26
TC 2
Z9 2
U1 6
U2 27
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD DEC 2
PY 2015
VL 92
IS 22
AR 224405
DI 10.1103/PhysRevB.92.224405
PG 6
WC Physics, Condensed Matter
SC Physics
GA CX5YK
UT WOS:000365778200007
ER
PT J
AU Hatta, Y
Monnai, A
Xiao, BW
AF Hatta, Yoshitaka
Monnai, Akihiko
Xiao, Bo-Wen
TI Flow harmonics v(n) at finite density
SO PHYSICAL REVIEW D
LA English
DT Article
ID NUCLEUS-NUCLEUS COLLISIONS; QUARK-GLUON PLASMA; ELLIPTIC FLOW; STAR
EXPERIMENT; COLLABORATION; PERSPECTIVE; DEPENDENCE; ANISOTROPY; PHENIX
AB We investigate the Gubser solution of viscous hydrodynamics at finite density and analytically compute the flow harmonics v(n). We explicitly show how v(n) and their viscous corrections depend on the chemical potential. The difference in v(n) between particles and antiparticles is also analytically computed and shown to be proportional to various chemical potentials and the viscosity. Excellent agreement is obtained between the results and the available experimental data from the SPS, RHIC and the LHC.
C1 [Hatta, Yoshitaka] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan.
[Monnai, Akihiko] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Xiao, Bo-Wen] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
[Xiao, Bo-Wen] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
RP Hatta, Y (reprint author), Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan.
FU RIKEN Special Postdoctoral Researcher program
FX We thank Hiroshi Masui for an incentive remark which partly motivated
this paper, and Anton Andronic for correspondence about the SPS data. We
also thank Kenji Morita, Guangyou Qin, Fuqiang Wang, Nu Xu and the
members of the nuclear theory group of Kyoto University for interesting
discussions and helpful comments. A. M. is supported by the RIKEN
Special Postdoctoral Researcher program.
NR 51
TC 4
Z9 4
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD DEC 2
PY 2015
VL 92
IS 11
AR 114010
DI 10.1103/PhysRevD.92.114010
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA CX7GJ
UT WOS:000365869900002
ER
PT J
AU Niklasson, AMN
Cawkwell, MJ
Rubensson, EH
Rudberg, E
AF Niklasson, Anders M. N.
Cawkwell, M. J.
Rubensson, Emanuel H.
Rudberg, Elias
TI Canonical density matrix perturbation theory
SO PHYSICAL REVIEW E
LA English
DT Article
ID ELECTRONIC-STRUCTURE CALCULATIONS; NONLINEAR OPTICAL-PROPERTIES;
TIGHT-BINDING METHOD; FUNCTIONAL CALCULATIONS; MOLECULAR-DYNAMICS;
SIMULATIONS; IMPLEMENTATION; POLARIZATION; OPERATOR; SYSTEMS
AB Density matrix perturbation theory [Niklasson and Challacombe, Phys. Rev. Lett. 92, 193001 (2004)] is generalized to canonical (NVT) free-energy ensembles in tight-binding, Hartree-Fock, or Kohn-Sham density-functional theory. The canonical density matrix perturbation theory can be used to calculate temperature-dependent response properties from the coupled perturbed self-consistent field equations as in density-functional perturbation theory. The method is well suited to take advantage of sparse matrix algebra to achieve linear scaling complexity in the computational cost as a function of system size for sufficiently large nonmetallic materials and metals at high temperatures.
C1 [Niklasson, Anders M. N.; Cawkwell, M. J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Rubensson, Emanuel H.; Rudberg, Elias] Uppsala Univ, Dept Informat Technol, Div Comp Sci, SE-75105 Uppsala, Sweden.
RP Niklasson, AMN (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM amn@lanl.gov
OI Cawkwell, Marc/0000-0002-8919-3368
FU NNSA of the U.S. DOE [DE-AC52-06NA25396]; U.S. DOE through LANL LDRD
program; Goran Gustafsson Foundation; Swedish research council
[621-2012-3861]; Swedish national strategic e-science research program
(eSSENCE)
FX The Los Alamos National Laboratory is operated by Los Alamos National
Security, LLC, for the NNSA of the U.S. DOE under Contract No.
DE-AC52-06NA25396. We gratefully acknowledge the support of the U.S. DOE
through LANL LDRD program, the Goran Gustafsson Foundation, the Swedish
research council (Grant No. 621-2012-3861), and the Swedish national
strategic e-science research program (eSSENCE) as well as stimulating
contributions from Travis Peery at the T-Division Ten-Bar Java Group.
NR 64
TC 1
Z9 1
U1 7
U2 19
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
EI 1550-2376
J9 PHYS REV E
JI Phys. Rev. E
PD DEC 2
PY 2015
VL 92
IS 6
AR 063301
DI 10.1103/PhysRevE.92.063301
PG 8
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA CX7HL
UT WOS:000365872700018
PM 26764847
ER
PT J
AU Kimmel, AV
Sushko, PV
AF Kimmel, Anna V.
Sushko, Peter V.
TI Mechanisms of formation of chemical bonding and defect formation at the
a-SiO2/BaTiO3 interfaces
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
DE interfaces; defects; oxide/ferroelectric interfaces
ID OXIDE HETEROSTRUCTURES; AMORPHOUS SILICA; CERAMICS; COMPOSITES; SURFACE;
OXYGEN
AB The structure and mechanisms of bonding and defect formation at the interfaces between amorphous silica (a-SiO2) and BaTiO3(0 0 1) were investigated using ab initio molecular dynamics. It was found that the nature of interfacial bonds crucially depends on the BaTiO3 surface termination. In particular, the interface between silica and TiO2-terminated BaTiO3 (BTO) slab is characterised by strong covalent Ti-O-Si bonds, while the interface between silica and BaO-terminated BTO demonstrates ionic character of interfacial bonds and exhibits bond instability. In both cases, the dynamics of oxygen species at oxide interfaces is a driving force of the formation of interfacial bonds and defects.
C1 [Kimmel, Anna V.] Natl Phys Lab, Teddington TW11 0LW, Middx, England.
[Kimmel, Anna V.; Sushko, Peter V.] UCL, Dept Phys & Astron, London WC1E 6BT, England.
[Sushko, Peter V.] Pacific NW Natl Lab, Phys & Computat Sci Directorate, Richland, WA 99352 USA.
RP Kimmel, AV (reprint author), Natl Phys Lab, Hampton Rd, Teddington TW11 0LW, Middx, England.
EM anna.kimmel@npl.co.uk
RI Sushko, Peter/F-5171-2013
OI Sushko, Peter/0000-0001-7338-4146
FU EPSRC [EP/H018328/1, EP/L000202]; National Physical Laboratory; Royal
Society; Laboratory Directed Research Program at Pacific Northwest
National Laboratory (PNNL); DOE by Battelle [DE-AC05-76RLo1830]
FX This work is supported by the EPSRC (grant EP/H018328/1) and National
Physical Laboratory. PVS is supported by the Royal Society and the
Laboratory Directed Research Program at Pacific Northwest National
Laboratory (PNNL). PNNL is a multiprogram national laboratory operated
for DOE by Battelle under the contract DE-AC05-76RLo1830. Computer
resources on the HECTOR service were provided via our membership of the
UK's HPC Materials Chemistry Consortium and funded by EPSRC (portfolio
grant EP/L000202). Authors also acknowledge the use of UCL facility
LEGION and computational resources at the London Centre for
Nanotechnology.
NR 33
TC 0
Z9 0
U1 3
U2 10
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
EI 1361-648X
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD DEC 2
PY 2015
VL 27
IS 47
AR 475006
DI 10.1088/0953-8984/27/47/475006
PG 10
WC Physics, Condensed Matter
SC Physics
GA CW9VR
UT WOS:000365346800008
PM 26507971
ER
PT J
AU Ritter, C
Provino, A
Manfrinetti, P
Pecharsky, VK
Gschneidner, KA
Dhar, SK
AF Ritter, C.
Provino, A.
Manfrinetti, P.
Pecharsky, V. K.
Gschneidner, K. A., Jr.
Dhar, S. K.
TI Magnetic structures of R5Ni2In4 and R11Ni4In9 (R = Tb and Ho): strong
hierarchy in the temperature dependence of the magnetic ordering in the
multiple rare-earth sublattices
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
DE rare earths nickel indides; rare earth intermetallics; neutron
diffraction; magnetic structures
ID NEUTRON-DIFFRACTION; CRYSTAL-STRUCTURE; GD; DY11NI4IN9; LU; ER
AB The magnetic properties and magnetic structures of the R5Ni2In4 and the microfibrous R11Ni4In9 compounds with R = Tb and Ho have been examined using magnetization, heat capacity, and neutron diffraction data. Rare earth atoms occupy three and five symmetrically inequivalent rare earth sites in R5Ni2In4 and R11Ni4In9 compounds, respectively. As a result of the intra-and inter-magnetic sublattice interactions, the magnetic exchange interactions are different for various rare earth sites; this leads to a cascade of magnetic transitions with a strong hierarchy in the temperature dependence of the magnetic orderings.
A transition at T-C = 125 K in Tb5Ni2In4 [kappa(1) = (0, 0, 0)] leads to a ferro/ferrimagnetic order where the magnetic ordering in one of the three R-sublattices leads to the ordering of another one; the third sublattice stays non-magnetic. New magnetic Bragg peaks appearing below T-N = 20 K can be indexed with the incommensurate magnetic propagation vector kappa(2) = (0, 0.636, 1/2); at T-N = 20 K a cycloidal spin order, which acts mostly upon the third R-sublattice, occurs. Ho5Ni2In4 establishes first antiferromagnetism [kappa = (0, 0, 0)] at T-N = 31 K on two R-sublattices; then the system becomes ferro/ferrimagnetic at T-C = 25 K with the third sublattice ordering as well. Tb11Ni4In9 has three magnetic transitions at T-C = 135 K, T-N1 = 35 K and at T-N2 = 20 K; they are respectively coupled to the appearance of different propagation vectors [kappa(1) = (0, 0, 0), kappa(2) = (0, 0, 1/2), kappa(3) = (0, 1, 1/2)], which themselves are operating differently on the five different R-sublattices. Two sublattices remain mostly ferromagnetic down to lowest temperature while the three others are predominantly coupled antiferromagnetically. In Ho11Ni4In9 a purely antiferromagnetic order, described by four different magnetic propagation vectors [kappa(1) = (0, 0.62, 0), kappa(2) = (0, 1, 0), kappa(3) = (0, 0, 1/2), kappa(4) = (0, 1, 1/2)], succeedingly includes all five different sublattices on cooling through transitions at T-N1 = 22 K, T-N2 = 12 K, T-N3 = 8 K and T-N4 = 7 K. The strength of the magnetic interactions of the different sublattices can be linked to structural details for both R5Ni2In4 and R11Ni4In9 compounds.
C1 [Ritter, C.] Inst Laue Langevin, F-38042 Grenoble, France.
[Provino, A.; Manfrinetti, P.; Pecharsky, V. K.; Gschneidner, K. A., Jr.] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
[Provino, A.; Manfrinetti, P.] Univ Genoa, Dept Chem, I-16146 Genoa, Italy.
[Provino, A.; Manfrinetti, P.] Inst SPIN CNR, I-16152 Genoa, Italy.
[Pecharsky, V. K.; Gschneidner, K. A., Jr.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
[Dhar, S. K.] TIFR, Dept Condensed Matter Phys & Mat Sci, Bombay 400005, Maharashtra, India.
RP Ritter, C (reprint author), Inst Laue Langevin, BP 156, F-38042 Grenoble, France.
EM ritter@ill.fr
FU U.S. Department of Energy [DE-AC02-07CH11358]; Office of Basic Energy
Sciences, Materials Science and Engineering Division of the Office of
Science
FX The Ames Laboratory is operated by Iowa State University of Science and
Technology for the U.S. Department of Energy, under Contract No.
DE-AC02-07CH11358. This work was supported by the Office of Basic Energy
Sciences, Materials Science and Engineering Division of the Office of
Science. The samples were prepared at the Ames Laboratory, and as the
magnetic and heat capacity measurements were also made at the Ames
Laboratory.
NR 25
TC 0
Z9 0
U1 3
U2 9
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
EI 1361-648X
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD DEC 2
PY 2015
VL 27
IS 47
AR 476001
DI 10.1088/0953-8984/27/47/476001
PG 20
WC Physics, Condensed Matter
SC Physics
GA CW9VR
UT WOS:000365346800012
PM 26548457
ER
PT J
AU Eckstein, J
Hart, WE
Phillips, CA
AF Eckstein, Jonathan
Hart, William E.
Phillips, Cynthia A.
TI PEBBL: an object-oriented framework for scalable parallel branch and
bound
SO MATHEMATICAL PROGRAMMING COMPUTATION
LA English
DT Article
DE Branch and bound; Parallel computation
ID ALGORITHMS; SEARCH; CUT; OPTIMIZATION; PERFORMANCE; SYSTEM; ABACUS;
PRICE
AB Parallel Enumeration and Branch-and-Bound Library (PEBBL) is a C++ class library implementing the underlying operations needed to support a wide variety of branch-and-bound algorithms on MPI-based message-passing distributed-memory parallel computing environments. PEBBL can be customized to support application-specific operations, while managing the generic aspects of branch and bound, such as maintaining the active subproblem pool across multiple processors, load balancing, and termination detection. PEBBL is designed to provide highly scalable performance on large numbers of processor cores. We describe the basics of PEBBL's architecture, with emphasis on the features most critical to is high scalability, including its flexible two-level load balancing architecture and its support for a synchronously parallel ramp-up phase. We also present an example application: the maximum monomial agreement problem arising from certain machine learning applications. For sufficiently difficult problem instances, we show essentially linear speedup on over 6000 processor cores, demonstrating a new state of the art in scalability for branch-and-bound implementations. We also show how processor cache effects can lead to reproducibly superlinear speedups.
C1 [Eckstein, Jonathan] Rutgers State Univ, Dept Management Sci & Informat Syst, 100 Rockafeller Rd, Piscataway, NJ 08854 USA.
[Eckstein, Jonathan] Rutgers State Univ, RUTCOR, Piscataway, NJ 08854 USA.
[Hart, William E.; Phillips, Cynthia A.] Sandia Natl Labs, Ctr Res Comp, Albuquerque, NM 87185 USA.
RP Eckstein, J (reprint author), Rutgers State Univ, Dept Management Sci & Informat Syst, 100 Rockafeller Rd, Piscataway, NJ 08854 USA.
EM jeckstei@rci.rutgers.edu; wehart@sandia.gov; caphill@sandia.gov
NR 54
TC 1
Z9 1
U1 0
U2 0
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1867-2949
EI 1867-2957
J9 MATH PROGRAM COMPUT
JI Math. Program. Comput.
PD DEC
PY 2015
VL 7
IS 4
BP 429
EP 469
DI 10.1007/s12532-015-0087-1
PG 41
WC Operations Research & Management Science
SC Operations Research & Management Science
GA DW2VG
UT WOS:000383499300003
ER
PT J
AU Schlichting, PE
Richardson, CL
Chandler, B
Gipson, PS
Mayer, JJ
Dabbert, CB
AF Schlichting, Peter E.
Richardson, Calvin L.
Chandler, Brian
Gipson, Philip S.
Mayer, John J.
Dabbert, C. Brad
TI WILD PIG (SUS SCROFA) REPRODUCTION AND DIET IN THE ROLLING PLAINS OF
TEXAS
SO SOUTHWESTERN NATURALIST
LA English
DT Article
ID FERAL HOGS; BOAR; CALIFORNIA; MOUNTAINS; FOREST; SIZE
AB Wild pigs (Sus scrofa) are an invasive species that can negatively impact arid environments. Their invasiveness mainly stems from two aspects of their behavior: diet and reproductive ability. We examined the stomach contents (n = 89) and reproductive tracts (n = 78) taken from wild pigs from June 1996 to October 1998 in the Rolling Plains of Texas. Pigs showed variation in forage categories among seasons. Agricultural crops were used with high frequency in all seasons. Farrowing peaked between December and February, with an average fetal litter size of 4.75 +/- 2.67. Older and larger sows tended to have larger litters, but sows as young as 8 months of age were reproductive. We recommend limiting pig access to agricultural crops when possible and trapping when pigs are most nutrient stressed (summer). Control efforts should be most effective immediately preceding the farrowing peak and focused on females > 8 months of age.
C1 [Schlichting, Peter E.; Chandler, Brian; Gipson, Philip S.; Dabbert, C. Brad] Texas Tech Univ, Dept Nat Resources Management, Lubbock, TX 79409 USA.
[Richardson, Calvin L.] Texas Parks & Wildlife Dept, Canyon, TX 79015 USA.
[Mayer, John J.] Savannah River Natl Lab, Aiken, SC 29808 USA.
RP Schlichting, PE (reprint author), Texas Tech Univ, Dept Nat Resources Management, Lubbock, TX 79409 USA.
EM pschlich@srel.uga.edu
NR 36
TC 1
Z9 1
U1 14
U2 16
PU SOUTHWESTERN ASSOC NATURALISTS
PI SAN MARCOS
PA SOUTHWEST TEXAS STATE UNIV, DEPT BIOLOGY, 601 UNIVERSITY DR, SAN MARCOS,
TX 78666 USA
SN 0038-4909
EI 1943-6262
J9 SOUTHWEST NAT
JI Southw. Natural.
PD DEC
PY 2015
VL 60
IS 4
BP 321
EP 326
PG 6
WC Biodiversity Conservation; Ecology
SC Biodiversity & Conservation; Environmental Sciences & Ecology
GA DO0BF
UT WOS:000377443700004
ER
PT J
AU Mittal, S
AF Mittal, Sparsh
TI A Survey of Techniques for Architecting and Managing Asymmetric
Multicore Processors
SO ACM COMPUTING SURVEYS
LA English
DT Article
DE Design; Performance; Review; classification; asymmetric multicore
processor; heterogeneous multicore architecture; big/little system;
reconfigurable AMP
ID HETEROGENEOUS CHIP-MULTIPROCESSORS; HIGH-PERFORMANCE; AMDAHLS LAW; CORE;
ENERGY; POWER; SYSTEMS; PREDICTION; CMPS
AB To meet the needs of a diverse range of workloads, asymmetric multicore processors (AMPs) have been proposed, which feature cores of different microarchitecture or ISAs. However, given the diversity inherent in their design and application scenarios, several challenges need to be addressed to effectively architect AMPs and leverage their potential in optimizing both sequential and parallel performance. Several recent techniques address these challenges. In this article, we present a survey of architectural and system-level techniques proposed for designing and managing AMPs. By classifying the techniques on several key characteristics, we underscore their similarities and differences. We clarify the terminology used in this research field and identify challenges that are worthy of future investigation. We hope that more than just synthesizing the existing work on AMPs, the contribution of this survey will be to spark novel ideas for architecting future AMPs that can make a definite impact on the landscape of next-generation computing systems.
C1 [Mittal, Sparsh] Oak Ridge Natl Lab, Future Technol Grp, 1 Bethel Valley Rd,Bldg 5100,MS-6173, Oak Ridge, TN 37830 USA.
RP Mittal, S (reprint author), Oak Ridge Natl Lab, Future Technol Grp, 1 Bethel Valley Rd,Bldg 5100,MS-6173, Oak Ridge, TN 37830 USA.
EM mittals@ornl.gov
FU U.S. Department of Energy, Office of Science, Advanced Scientific
Computing Research
FX Support for this work was provided by U.S. Department of Energy, Office
of Science, Advanced Scientific Computing Research.
NR 129
TC 0
Z9 0
U1 0
U2 2
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 0360-0300
EI 1557-7341
J9 ACM COMPUT SURV
JI ACM Comput. Surv.
PD DEC
PY 2015
VL 48
IS 3
AR 45
DI 10.1145/2856125
PG 38
WC Computer Science, Theory & Methods
SC Computer Science
GA DI9WG
UT WOS:000373852800013
ER
PT J
AU Gilbert, B
Comolli, LR
Tinnacher, RM
Kunz, M
Banfield, JF
AF Gilbert, Benjamin
Comolli, Luis R.
Tinnacher, Ruth M.
Kunz, Martin
Banfield, Jillian F.
TI FORMATION AND RESTACKING OF DISORDERED SMECTITE OSMOTIC HYDRATES
SO CLAYS AND CLAY MINERALS
LA English
DT Article
DE Clay Swelling; Cryogenic Transmission Electron Microscopy;
Montmorillonite; van der Waals Forces
ID TRANSMISSION ELECTRON-MICROSCOPY; X-RAY-DIFFRACTION; VAN-DER-WAALS;
ORIENTED ATTACHMENT; LAYER CHARGE; MONTMORILLONITE HYDRATION; INTERLAYER
DISTANCE; CRYSTAL-GROWTH; CRYO-TEM; CLAY
AB Clay swelling, an important phenomenon in natural systems, can dramatically affect the properties of soils and sediments. Of particular interest in low-salinity, saturated systems are osmotic hydrates, forms of smectite in which the layer separation greatly exceeds the thickness of a single smectite layer due to the intercalation of water. In situ X-ray diffraction (XRD) studies have shown a strong link between ionic strength and average interlayer spacing in osmotic hydrates but also indicate the presence of structural disorder that has not been fully described. In the present study the structural state of expanded smectite in sodium chloride solutions was investigated by combining very low electron dose, high-resolution cryogenic-transmission electron microscopy observations with XRD experiments. Wyoming smectite (SWy-2) was embedded in vitreous ice to evaluate clay structure in aqua. Lattice-fringe images showed that smectite equilibrated in aqueous, low-ionic-strength solutions, exists as individual smectite layers, osmotic hydrates composed of parallel layers, as well as disordered layer conformations. No evidence was found here for edge-to-sheet attractions, but significant variability in interlayer spacing was observed. Whether this variation could be explained by a dependence of the magnitude of long-range cohesive (van der Waals) forces on the number of layers in a smectite particle was investigated here. Calculations of the Hamaker constant for layer-layer interactions showed that van der Waals forces may span at least five layers plus the intervening water and confirmed that forces vary with layer number. Drying of the disordered osmotic hydrates induced re-aggregation of the smectite to form particles that exhibited coherent scattering domains. Clay disaggregation and restacking may be considered as an example of oriented attachment, with the unusual distinction that it may be cycled repeatedly by changing solution conditions.
C1 [Gilbert, Benjamin; Tinnacher, Ruth M.; Banfield, Jillian F.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Geosci Div, Berkeley, CA 94720 USA.
[Comolli, Luis R.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Kunz, Martin] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Banfield, Jillian F.] Univ Calif Berkeley, Earth & Planetary Sci, Berkeley, CA 94720 USA.
RP Banfield, JF (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Geosci Div, Berkeley, CA 94720 USA.; Banfield, JF (reprint author), Univ Calif Berkeley, Earth & Planetary Sci, Berkeley, CA 94720 USA.
EM jbanfield@berkeley.edu
RI Gilbert, Benjamin/E-3182-2010
FU Office of Science, Office of Basic Energy Sciences (BES), Chemical
Sciences, Geosciences, and Biosciences Division, of the U.S. Department
of Energy (DOE) [DE-AC02-05CH11231]; U.S. Department of Energy Used Fuel
Disposition (UFD) Campaign [DE-AC02-05CH11231]; DOE BES Materials
Science and Engineering Division, Biomolecular Materials (BMM)
[DE-SC0008068]
FX The authors thank Sean Mulcahy for performing electron beam microprobe
analysis and Dr Roger French for access to and assistance with the Gecko
Hamaker code. This work was supported by the Office of Science, Office
of Basic Energy Sciences (BES), Chemical Sciences, Geosciences, and
Biosciences Division, of the U.S. Department of Energy (DOE) under
Contract No. DE-AC02-05CH11231. RMT was supported by the U.S. Department
of Energy Used Fuel Disposition (UFD) Campaign, Contract No.
DE-AC02-05CH11231. The Gecko Hamaker code was developed with support
from DOE BES Materials Science and Engineering Division, Biomolecular
Materials (BMM) under award DE-SC0008068.
NR 53
TC 1
Z9 1
U1 2
U2 13
PU CLAY MINERALS SOC
PI CHANTILLY
PA 3635 CONCORDE PKWY, STE 500, CHANTILLY, VA 20151-1125 USA
SN 0009-8604
EI 1552-8367
J9 CLAY CLAY MINER
JI Clay Clay Min.
PD DEC
PY 2015
VL 63
IS 6
BP 432
EP 442
DI 10.1346/CCMN.2015.0630602
PG 11
WC Chemistry, Physical; Geosciences, Multidisciplinary; Mineralogy; Soil
Science
SC Chemistry; Geology; Mineralogy; Agriculture
GA DJ3QF
UT WOS:000374120000002
ER
PT J
AU D'Antonio, EL
Deinema, MS
Kearns, SP
Frey, TA
Tanghe, S
Perry, K
Roy, TA
Gracz, HS
Rodriguez, A
D'Antonio, J
AF D'Antonio, Edward L.
Deinema, Mason S.
Kearns, Sean P.
Frey, Tyler A.
Tanghe, Scott
Perry, Kay
Roy, Timothy A.
Gracz, Hanna S.
Rodriguez, Ana
D'Antonio, Jennifer
TI Structure-based approach to the identification of a novel group of
selective glucosamine analogue inhibitors of Trypanosoma cruzi
glucokinase
SO MOLECULAR AND BIOCHEMICAL PARASITOLOGY
LA English
DT Article
DE Chagas' disease; Trypanosome cruzi; Glucokinase; Hexokinase;
Structure-based drug design
ID SECONDARY STRUCTURE ASSIGNMENT; DRUG DISCOVERY;
BIOCHEMICAL-CHARACTERIZATION; DEVELOPMENT SETTINGS; ESTIMATE SOLUBILITY;
CRYSTAL-STRUCTURES; ENERGY-METABOLISM; BRUCEI HEXOKINASE;
CHAGAS-DISEASE; PROTEIN
AB Glucokinase and hexokinase from pathogenic protozoa Trypanosoma cruzi are potential drug targets for antiparasitic chemotherapy of Chagas' disease. These glucose kinases phosphorylate D-glucose with co-substrate ATP and yield glucose 6-phosphate and are involved in essential metabolic pathways, such as glycolysis and the pentose phosphate pathway. An inhibitor class was conceived that is selective for T. cruzi glucokinase (TcGIcK) using structure-based drug design involving glucosamine having a linker from the C2 amino that terminates with a hydrophobic group either being phenyl, p-hydroxyphenyl, or dioxobenzo[b]thiophenyl groups. The synthesis and characterization for two of the four compounds are presented while the other two compounds were commercially available. Four high-resolution X-ray crystal structures of TcGlcK inhibitor complexes are reported along with enzyme inhibition constants (Ki) for TcGlcK and Homo sapiens hexokinase IV (HsHxKIV). These glucosamine analogue inhibitors include three strongly selective TcGIcK inhibitors and a fourth inhibitor, benzoyl glucosamine (BENZ-GlcN), which is a similar variant exhibiting a shorter linker. Carboxybenzyl glucosamine (CBZ-GlcN) was found to be the strongest glucokinase inhibitor known to date, having a K-i of 0.71 +/- 0.05 mu M. Also reported are two biologically active inhibitors against in vitro T. cruzi culture that were BENZ-GlcN and CBZ-GlcN, with intracellular amastigote growth inhibition IC50 values of 16.08 +/- 0.16 M and 48.73 +/- 0.69 M, respectively. These compounds revealed little to no toxicity against mammalian NIH-3T3 fibroblasts and provide a key starting point for further drug development with this class of compound. (C) 2015 Elsevier B.V. All rights reserved.
C1 [D'Antonio, Edward L.; Deinema, Mason S.; Kearns, Sean P.; Frey, Tyler A.; Roy, Timothy A.; D'Antonio, Jennifer] Univ South Carolina Beaufort, Dept Nat Sci, 1 Univ Blvd, Bluffton, SC 29909 USA.
[Perry, Kay] Cornell Univ, NE CAT, Dept Chem & Chem Biol, Argonne Natl Lab, Bldg 436E,9700 S Cass Ave, Argonne, IL 60439 USA.
[Gracz, Hanna S.] N Carolina State Univ, Dept Mol & Struct Biochem, 128 Polk Hall, Raleigh, NC 27695 USA.
[Tanghe, Scott; Rodriguez, Ana] NYU, Sch Med, Dept Microbiol, 550 First Ave, New York, NY 10016 USA.
RP D'Antonio, EL (reprint author), Univ South Carolina Beaufort, Dept Nat Sci, 1 Univ Blvd, Bluffton, SC 29909 USA.
EM edantonio@uscb.edu
OI Rodriguez, Ana/0000-0002-0060-3405
FU U.S. National Institutes of Health (SC INBRE) [GM103499]; University of
South Carolina Office of the Vice President for Research (Magellan
Program); National Institute of General Medical Sciences from the
National Institutes of Health [P41 GM103403]; NIH-ORIP HEI grant [S10
RR029205]; DOE Office of Science by Argonne National Laboratory
[DE-AC02-06CH11357]
FX We thank Dr. Amy E. Sears, Dr. Paul D. Swartz, and Danielle A. Lehman
for helpful discussions. The work was supported by the U.S. National
Institutes of Health Grant GM103499 (SC INBRE) to E.L.D. and by the
University of South Carolina Office of the Vice President for Research
(Magellan Program) to M.S.D. and S.P.K. We thank the beamlines of the
Northeastern Collaborative Access Team (NE-CAT), which are funded by the
National Institute of General Medical Sciences from the National
Institutes of Health (P41 GM103403). The Pilatus 6 M detector on
beamline 24-ID-C is funded by a NIH-ORIP HEI grant (S10 RR029205). This
research used resources from the Advanced Photon Source, a U.S.
Department of Energy (DOE) Office of Science User Facility operated for
the DOE Office of Science by Argonne National Laboratory under Contract
No. DE-AC02-06CH11357. Mass spectra and NMR spectra were obtained at
North Carolina State University in the mass spectrometry facility and
the nuclear magnetic resonance center, respectively, located in the
department of chemistry.
NR 61
TC 1
Z9 1
U1 7
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0166-6851
EI 1872-9428
J9 MOL BIOCHEM PARASIT
JI Mol. Biochem. Parasitol.
PD DEC
PY 2015
VL 204
IS 2
BP 64
EP 76
DI 10.1016/j.molbiopara.2015.12.004
PG 13
WC Biochemistry & Molecular Biology; Parasitology
SC Biochemistry & Molecular Biology; Parasitology
GA DI5OE
UT WOS:000373547700002
PM 26778112
ER
PT J
AU McClay, WA
Yadav, N
Ozbek, Y
Haas, A
Attias, HT
Nagarajan, SS
AF McClay, Wilbert A.
Yadav, Nancy
Ozbek, Yusuf
Haas, Andy
Attias, Hagaii T.
Nagarajan, Srikantan S.
TI A Real-Time Magnetoencephalography Brain-Computer Interface Using
Interactive 3D Visualization and the Hadoop Ecosystem
SO BRAIN SCIENCES
LA English
DT Article
DE brain-computer interface; massive data management; machine learning
algorithms; magnetoencephalographic (MEG); electroencephalography (EEG);
3D visualization; Hadoop Ecosystem
ID SPACE; MEG; SIGNAL
AB Ecumenically, the fastest growing segment of Big Data is human biology-related data and the annual data creation is on the order of zetabytes. The implications are global across industries, of which the treatment of brain related illnesses and trauma could see the most significant and immediate effects. The next generation of health care IT and sensory devices are acquiring and storing massive amounts of patient related data. An innovative Brain-Computer Interface (BCI) for interactive 3D visualization is presented utilizing the Hadoop Ecosystem for data analysis and storage. The BCI is an implementation of Bayesian factor analysis algorithms that can distinguish distinct thought actions using magneto encephalographic (MEG) brain signals. We have collected data on five subjects yielding 90% positive performance in MEG mid- and post-movement activity. We describe a driver that substitutes the actions of the BCI as mouse button presses for real-time use in visual simulations. This process has been added into a flight visualization demonstration. By thinking left or right, the user experiences the aircraft turning in the chosen direction. The driver components of the BCI can be compiled into any software and substitute a user's intent for specific keyboard strikes or mouse button presses. The BCI's data analytics of a subject's MEG brainwaves and flight visualization performance are stored and analyzed using the Hadoop Ecosystem as a quick retrieval data warehouse.
C1 [McClay, Wilbert A.; Yadav, Nancy; Ozbek, Yusuf] Northeastern Univ, Boston, MA 02115 USA.
[McClay, Wilbert A.; Yadav, Nancy; Ozbek, Yusuf] Lawrence Livermore Natl Lab, Boston, MA 02115 USA.
[Haas, Andy] Dataura, Sierra Vista, AZ 85635 USA.
[Attias, Hagaii T.] Golden Metall Inc, San Francisco, CA 94147 USA.
[Nagarajan, Srikantan S.] Univ Calif San Francisco, Dept Radiol, Biomagnet Imaging Lab, San Francisco, CA 94122 USA.
RP McClay, WA (reprint author), Northeastern Univ, Boston, MA 02115 USA.
EM mcclay.w@husky.neu.edu; yadav.na@husky.neu.edu; y.ozbek@neu.edu;
andy.haas@m-six.com; htattias@goldenmetallic.com; sri@radiology.ucsf.edu
NR 31
TC 0
Z9 1
U1 2
U2 2
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 2076-3425
EI 2976-3425
J9 BRAIN SCI
JI Brain Sci.
PD DEC
PY 2015
VL 5
IS 4
BP 419
EP 440
DI 10.3390/brainsci5040419
PG 22
WC Neurosciences
SC Neurosciences & Neurology
GA DH3TW
UT WOS:000372710700003
PM 26437432
ER
PT J
AU Bolotnikov, AE
Ackley, K
Camarda, GS
Cui, Y
Eger, JF
De Geronimo, G
Finfrock, C
Fried, J
Hossain, A
Lee, W
Prokesch, M
Petryk, M
Reiber, JL
Roy, U
Vernon, E
Yang, G
James, RB
AF Bolotnikov, A. E.
Ackley, K.
Camarda, G. S.
Cui, Y.
Eger, J. F.
De Geronimo, G.
Finfrock, C.
Fried, J.
Hossain, A.
Lee, W.
Prokesch, M.
Petryk, M.
Reiber, J. L.
Roy, U.
Vernon, E.
Yang, G.
James, R. B.
TI High-Efficiency CdZnTe Gamma-Ray Detectors
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article
DE CdZnTe; charge-loss correction; crystal defects; virtual Frisch-grid
detectors
ID POSITION-SENSITIVE DETECTORS; CHARGE-COLLECTION EVENTS; READOUT; CHAMBER
AB The longer electron lifetime of today's CdZnTe (CZT) crystals allows for free carriers to travel longer distances in the crystals, which means that, in principle, thicker devices could be fabricated. These thicker CZT devices would offer greater detection efficiency for high-energy gamma-ray detectors. However, up to now, the thicknesses and sizes of actual detectors have still been limited by the nonuniform detector response, and the biggest devices reported in the literature are (20 x 20 x 15)-mm(3) pixelated detectors with a drift distance of 15 mm. Although thicker and bigger single crystals are becoming available today, the high requirements on their crystal quality drastically reduce their acceptance yield and increase their cost. Fortunately, in many cases, the inhomogeneity in response can be corrected by segmenting the active volumes of the detectors and correcting the responses generated from each of the voxels. Such high-granularity position-sensitive detectors open up the opportunity for using thicker and less expensive CZT crystals. The goal of this work is to demonstrate that today's commercial high electron mobility-lifetime CZT material is suitable for a new class of detectors with 20-25-mm drift distances and even larger in the near future, provided that the detectors' response nonuniformities can be corrected on a scale comparable to or larger than the sizes of the electron clouds, which is similar to 100 mu m.
C1 [Bolotnikov, A. E.; Ackley, K.; Camarda, G. S.; Cui, Y.; De Geronimo, G.; Finfrock, C.; Fried, J.; Hossain, A.; Roy, U.; Vernon, E.; Yang, G.; James, R. B.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Eger, J. F.; Prokesch, M.; Reiber, J. L.] eV Prod Inc, Saxonburg, PA 16056 USA.
[Lee, W.] Korea Univ, Seoul 151742, South Korea.
[Petryk, M.] SUNY Binghamton, Vestal, NY 13850 USA.
RP Bolotnikov, AE (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM bolotnik@bnl.gov
FU U.S. Department of Energy; Office of Nonproliferation and Verification
Research & Development, DNN RD; U.S. Defense Threat Reduction Agency
(DTRA); BNL's Technology Maturation Award; U.S. Department of Energy
[DE-AC02-98CH1-886]
FX This work was supported by the U.S. Department of Energy, the Office of
Nonproliferation and Verification Research & Development, DNN R&D, the
U.S. Defense Threat Reduction Agency (DTRA), and BNL's Technology
Maturation Award. The manuscript has been authored by Brookhaven Science
Associates, LLC, under Contract No. DE-AC02-98CH1-886 with the U.S.
Department of Energy.
NR 16
TC 1
Z9 1
U1 2
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 3193
EP 3198
DI 10.1109/TNS.2015.2493444
PN 2
PG 6
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DG4AY
UT WOS:000372013500013
ER
PT J
AU Blatnik, M
Dehmelt, K
Deshpande, A
Dixit, D
Feege, N
Hemmick, TK
Lewis, B
Purschke, ML
Roh, W
Torales-Acosta, F
Videbaek, T
Zajac, S
AF Blatnik, Marie
Dehmelt, Klaus
Deshpande, Abhay
Dixit, Dhruv
Feege, Nils
Hemmick, Thomas K.
Lewis, Benji
Purschke, Martin L.
Roh, William
Torales-Acosta, Fernando
Videbaek, Thomas
Zajac, Stephanie
TI Performance of a Quintuple-GEM Based RICH Detector Prototype
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article
DE Cerenkov detectors; gem detectors; micropattern gas chambers; nuclear
physics instrumentation; particle detectors; particle measurements; rich
detectors
ID PHENIX EXPERIMENT; CF4
AB Cerenkov technology is often the optimal choice for particle identification in high energy particle collision applications. Typically, the most challenging regime is at high pseudorapidity (forward) where particle identification must perform well at high laboratory momenta. For the upcoming electron ion collider (EIC), the physics goals require hadron (pi, K, p) identification up to similar to 50 GeV/c. In this region Cerenkov ring-imaging (RICH) is the most viable solution. The speed of light in a radiator medium is inversely proportional to the refractive index. Hence, for particle identification (PID) reaching out to high momenta a small index of refraction is required. Unfortunately, the lowest indices of refraction also result in the lowest light yield oc sine (dN gamma/d infinity proportional to sin(2) (theta(C))) driving up the radiator length and thereby the overall detector cost. In this paper we report on a successful test of a compact RICH detector (1 meter radiator) capable of delivering in excess of 10 photoelectrons per ring with a low index radiator gas (CF4). The detector concept is a natural extension of the PHENIX hadron-blind detector (HBD) achieved by adding focusing capability at low wavelength and adequate gain for high efficiency detection of single-electron induced avalanches. Our results indicate that this technology is indeed a viable choice in the forward direction of the EIC. The setup and results are described within.
C1 [Blatnik, Marie; Dehmelt, Klaus; Deshpande, Abhay; Dixit, Dhruv; Feege, Nils; Hemmick, Thomas K.; Lewis, Benji; Roh, William; Torales-Acosta, Fernando; Videbaek, Thomas; Zajac, Stephanie] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Purschke, Martin L.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Blatnik, M (reprint author), SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
EM klaus.dehmelt@stonybrook.edu
FU U.S. Department of Energy (DOE) [1901/59187]
FX This work was supported in part by the U.S. Department of Energy (DOE)
under Award 1901/59187.
NR 20
TC 1
Z9 1
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 3256
EP 3264
DI 10.1109/TNS.2015.2487999
PN 2
PG 9
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DG4AY
UT WOS:000372013500020
ER
PT J
AU Bai, EW
Heifetz, A
Raptis, P
Dasgupta, S
Mudumbai, R
AF Bai, Er-wei
Heifetz, Alexander
Raptis, Paul
Dasgupta, Soura
Mudumbai, Raghuraman
TI Maximum Likelihood Localization of Radioactive Sources Against a Highly
Fluctuating Background
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article
DE Gamma ray detection; maximum likelihood estimation; parameter estimation
ID SENSOR NETWORK; TRACKING
AB This paper considers the use of maximum likelihood estimation to localize a stationary source from total gamma ray counts, in an open area setting with a highly fluctuating background. As this turns out to be a highly nonconcave maximization, convergence rates of global convergent algorithms, such as simulated annealing, can be very slow and iterative algorithms such an Newton's method for maximization can be captured by local maxima while fast. Thus, the selection of the initial estimate is critical to how well they perform. This paper proposes a way to generate such an initial estimate using an averaging process that is shown to be asymptotically convergent to the maximum likelihood source estimate. This ensures that with a sufficiently large number of samples, the initial estimate is indeed within of the basin of attraction of such iterative algorithms. Analytical results are supported by numerical simulations based on a measured background data and synthetically injected source data.
C1 [Bai, Er-wei; Heifetz, Alexander; Raptis, Paul; Dasgupta, Soura; Mudumbai, Raghuraman] Univ Iowa, Dept Elect & Comp Engn, Iowa City, IA 52242 USA.
[Bai, Er-wei] Queens Univ, Sch Elect Elect Engn & Comp Sci, Belfast, Antrim, North Ireland.
[Heifetz, Alexander; Raptis, Paul] Argonne Natl Lab, Nucl Engn Div, Lemont, IL 60439 USA.
RP Bai, EW (reprint author), Univ Iowa, Dept Elect & Comp Engn, Iowa City, IA 52242 USA.
EM erwei@engineering.uiowa.edu; dasgupta@engineering.uiowa.edu;
rmudumbai@engineering.uiowa.edu
FU National Science Foundation [EPS-1101284, ECCS-1150801, CNS-1239509];
Department of Energy [DE-FG52-09NA29364]; Roy J. Carver Charitable Trust
FX This work was supported in part by the National Science Foundation under
Grants EPS-1101284, ECCS-1150801, and CNS-1239509, in part by the
Department of Energy under Grant DE-FG52-09NA29364, and in part by a
grant from the Roy J. Carver Charitable Trust.
NR 19
TC 0
Z9 0
U1 2
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 3274
EP 3282
DI 10.1109/TNS.2015.2497327
PN 2
PG 9
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DG4AY
UT WOS:000372013500022
ER
PT J
AU Lenardo, B
Kazkaz, K
Manalaysay, A
Mock, J
Szydagis, M
Tripathi, M
AF Lenardo, Brian
Kazkaz, Kareem
Manalaysay, Aaron
Mock, Jeremy
Szydagis, Matthew
Tripathi, Mani
TI A Global Analysis of Light and Charge Yields in Liquid Xenon
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article
DE Dark matter search; energy scale; gamma-ray apparatus; gamma-ray
detection; gas scintillation; ionization chambers; liquid rare gases;
liquid scintillation; liquid xenon; Markov chain; Monte Carlo; neutrino
detection; particle calorimetry; radiation detectors; scintillation
counters; simulation; yield estimation
ID DARK-MATTER SEARCHES; SCINTILLATION EFFICIENCY; NUCLEAR RECOILS;
IONIZATION YIELD; ARGON; RECOMBINATION; DETECTORS; PARTICLES; GASES;
MODEL
AB We present an updated model of light and charge yields from nuclear recoils in liquid xenon with a simultaneously constrained parameter set. A global analysis is performed using measurements of electron and photon yields compiled from all available historical data, as well as measurements of the ratio of the two. These data sweep over energies from 1 - 300 keV and external applied electric fields from 0 - 4060 V/cm. The model is constrained by constructing global cost functions and using a simulated annealing algorithm and a Markov Chain Monte Carlo approach to optimize and find confidence intervals on all free parameters in the model. This analysis contrasts with previous work in that we do not unnecessarily exclude data sets nor impose artificially conservative assumptions, do not use spline functions, and reduce the number of parameters used in NEST v0.98. We report our results and the calculated best-fit charge and light yields. These quantities are crucial to understanding the response of liquid xenon detectors in the energy regime important for rare event searches such as the direct detection of dark matter particles.
C1 [Lenardo, Brian; Manalaysay, Aaron; Tripathi, Mani] Univ Calif Davis, Davis, CA 95616 USA.
[Lenardo, Brian; Kazkaz, Kareem] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Mock, Jeremy; Szydagis, Matthew] SUNY Albany, Dept Phys, Albany, NY 12222 USA.
RP Lenardo, B (reprint author), Univ Calif Davis, Davis, CA 95616 USA.
EM bglenardo@ucdavis.edu; kazkaz1@llnl.gov; aaronm@ucdavis.edu;
jmock@albany.edu; mszydagis@albany.edu; mani@physics.ucdavis.edu
FU Lawrence Scholars Program at Lawrence Livermore National Laboratory;
U.S. Department of Energy, National Nuclear Security Administration
[DE-AC52-07NA27344]; U.S. Department of Energy at the University of
California, Davis [DE-FG02-91ER40674]; DOE [DE-NA0000979,
LLNL-JRNL-664499]
FX B. Lenardo is supported by the Lawrence Scholars Program at Lawrence
Livermore National Laboratory, which is operated by Lawrence Livermore
National Security, LLC, for the U.S. Department of Energy, National
Nuclear Security Administration under Contract DE-AC52-07NA27344. This
work was supported by U.S. Department of Energy grant DE-FG02-91ER40674
at the University of California, Davis, as well as supported by DOE
grant DE-NA0000979, which funds the seven universities involved in the
Nuclear Science and Security Consortium (LLNL-JRNL-664499).
NR 56
TC 12
Z9 12
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 3387
EP 3396
DI 10.1109/TNS.2015.2481322
PN 2
PG 10
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DG4AY
UT WOS:000372013500035
ER
PT J
AU Wang, XJ
Pan, ZP
Fan, FF
Wang, JW
Liu, Y
Mao, SX
Zhu, T
Xia, SM
AF Wang, Xueju
Pan, Zhipeng
Fan, Feifei
Wang, Jiangwei
Liu, Yang
Mao, Scott X.
Zhu, Ting
Xia, Shuman
TI Nanoscale Deformation Analysis With High-Resolution Transmission
Electron Microscopy and Digital Image Correlation
SO JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
LA English
DT Article
DE digital image correlation; high-resolution transmission electron
microscopy; deformation analysis; error assessment; lens distortion
ID ATOMIC-FORCE MICROSCOPY; PURE AMORPHOUS-SILICON; FIELD-MEASUREMENTS;
THIN-FILMS; POLYCRYSTALLINE SILICON; EXPERIMENTAL VALIDATION;
STRAIN-MEASUREMENTS; QUANTITATIVE SMALL; ELASTIC PROPERTIES;
RESIDUAL-STRESS
AB We present an application of the digital image correlation (DIC) method to high-resolution transmission electron microscopy (HRTEM) images for nanoscale deformation analysis. The combination of DIC and HRTEM offers both the ultrahigh spatial resolution and high displacement detection sensitivity that are not possible with other microscope-based DIC techniques. We demonstrate the accuracy and utility of the HRTEM-DIC technique through displacement and strain analysis on amorphous silicon. Two types of error sources resulting from the transmission electron microscopy (TEM) image noise and electromagnetic-lens distortions are quantitatively investigated via rigid-body translation experiments. The local and global DIC approaches are applied for the analysis of diffusion-and reaction-induced deformation fields in electrochemically lithiated amorphous silicon. The DIC technique coupled with HRTEM provides a new avenue for the deformation analysis of materials at the nanometer length scales.
C1 [Wang, Xueju; Pan, Zhipeng; Fan, Feifei; Zhu, Ting; Xia, Shuman] Georgia Inst Technol, Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
[Wang, Jiangwei; Mao, Scott X.] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15261 USA.
[Liu, Yang] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
RP Xia, SM (reprint author), Georgia Inst Technol, Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
EM shuman.xia@me.gatech.edu
RI Wang, Jiangwei/F-8249-2011; Zhu, Ting/A-2206-2009
OI Wang, Jiangwei/0000-0003-1191-0782;
FU NSF [CMMI-1300458, CMMI-1100205, DMR-1410936]; NSF through the
University of Pittsburgh [CMMI-08010934]; Sandia National Lab.; U.S.
Department of Energy [DE-AC04-94AL85000]
FX S.X. acknowledges the support from the NSF Grant No. CMMI-1300458. T.Z.
acknowledges the support from the NSF Grant Nos. CMMI-1100205 and
DMR-1410936. S.X.M. acknowledges the support from the NSF Grant No.
CMMI-08010934 through the University of Pittsburgh and Sandia National
Lab. This work was performed, in part, at the Center for Integrated
Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy
Sciences user facility. Sandia National Laboratories is a multiprogram
laboratory managed and operated by Sandia Corporation, a wholly owned
subsidiary of Lockheed Martin Corporation, for the U.S. Department of
Energy's National Nuclear Security Administration under Contract No.
DE-AC04-94AL85000.
NR 70
TC 0
Z9 0
U1 4
U2 14
PU ASME
PI NEW YORK
PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0021-8936
EI 1528-9036
J9 J APPL MECH-T ASME
JI J. Appl. Mech.-Trans. ASME
PD DEC
PY 2015
VL 82
IS 12
AR 121001
DI 10.1115/1.4031332
PG 9
WC Mechanics
SC Mechanics
GA DG5XS
UT WOS:000372155000001
ER
PT J
AU Jeanne, P
Rutqvist, J
Dobson, PF
Garcia, J
Walters, M
Hartline, C
Borgia, A
AF Jeanne, Pierre
Rutqvist, Jonny
Dobson, Patrick F.
Garcia, Julio
Walters, Mark
Hartline, Craig
Borgia, Andrea
TI Geomechanical simulation of the stress tensor rotation caused by
injection of cold water in a deep geothermal reservoir
SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
LA English
DT Article
ID CALIFORNIA; GEYSERS; STIMULATION; SYSTEM; FIELD; ROCK; FLOW
AB We present a three-dimensional thermohydromechanical numerical study of the evolution and distribution of the stress tensor within the northwest part of The Geysers geothermal reservoir (in California), including a detailed study of the region around one injection well from 2003 to 2012. Initially, after imposing a normal faulting stress regime, we calculated local changes in the stress regime around injection wells. Our results were compared with previously published studies in which the stress state was inferred from inverting the focal plane mechanism of seismic events. Our main finding is that changes in stress tensor orientation are caused by injection-induced progressive cooling of the reservoir, as well as by the seasonal variations in injection rate. Because of the gravity flow and cooling around a liquid zone formed by the injection, the vertical stress reduction is larger and propagates far below the injection well. At the same time, the horizontal stress increases, mostly because of stress redistribution below and above the cooling area. These two phenomena cause the rotation of the stress tensor and the appearance of a strike-slip regime above, inside, and below the cooling area. The cooling and the associated rotation of the stress regime can play a significant role in the observed long-term deepening of the microseismicity below active injection wells.
C1 [Jeanne, Pierre; Rutqvist, Jonny; Dobson, Patrick F.; Borgia, Andrea] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Geosci Div, Berkeley, CA 94720 USA.
[Garcia, Julio; Walters, Mark; Hartline, Craig] Calpine Corp, Middletown, CA USA.
RP Jeanne, P (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Geosci Div, Berkeley, CA 94720 USA.
EM pjeanne@lbl.gov
RI Rutqvist, Jonny/F-4957-2015; Jeanne, Pierre/I-2996-2015; Dobson,
Patrick/D-8771-2015
OI Rutqvist, Jonny/0000-0002-7949-9785; Jeanne, Pierre/0000-0003-1487-8378;
Dobson, Patrick/0000-0001-5031-8592
FU Geothermal Technologies Program, under the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was conducted with funding provided by the Assistant Secretary
for Energy Efficiency and Renewable Energy, Geothermal Technologies
Program, under the U.S. Department of Energy contract DE-AC02-05CH11231.
The seismic and injection data are available online at
http://www.ncedc.org/egs/catalog-search.html and
http://geosteam.conservation.ca.gov/WellSearch/GeoWellSearch.aspx,
respectively.
NR 30
TC 3
Z9 3
U1 1
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9313
EI 2169-9356
J9 J GEOPHYS RES-SOL EA
JI J. Geophys. Res.-Solid Earth
PD DEC
PY 2015
VL 120
IS 12
BP 8422
EP 8438
DI 10.1002/2015JB012414
PG 17
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA DG6OG
UT WOS:000372204600025
ER
PT J
AU Lopez, LA
Grefenstette, BW
Reynolds, SP
An, HJ
Boggs, SE
Christensen, FE
Craig, WW
Eriksen, KA
Fryer, CL
Hailey, CJ
Harrison, FA
Madsen, KK
Stern, DK
Zhang, WW
Zoglauer, A
AF Lopez, Laura A.
Grefenstette, Brian W.
Reynolds, Stephen P.
An, Hongjun
Boggs, Steven E.
Christensen, Finn E.
Craig, William W.
Eriksen, Kristoffer A.
Fryer, Chris L.
Hailey, Charles J.
Harrison, Fiona A.
Madsen, Kristin K.
Stern, Daniel K.
Zhang, William W.
Zoglauer, Andreas
TI A SPATIALLY RESOLVED STUDY OF THE SYNCHROTRON EMISSION AND TITANIUM IN
TYCHO'S SUPERNOVA REMNANT USING NuSTAR
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE ISM: individual objects: (Tycho's SNR); ISM: supernova remnants; X-rays:
ISM
ID GAMMA-RAY EMISSION; CHANDRASEKHAR MASS MODELS; CORE-COLLAPSE SUPERNOVAE;
LINE EMISSION; PARTICLE-ACCELERATION; NOVA REMNANTS; DOUBLE-DETONATION;
MOLECULAR CLOUD; MAGNETIC-FIELD; IA SUPERNOVAE
AB We report results from deep observations (similar to 750 ks) of Tycho's supernova remnant (SNR) with NuSTAR. Using these data, we produce narrow-band images over several energy bands to identify the regions producing the hardest X-rays and to search for radioactive decay line emission from Ti-44. We find that the hardest (>10 keV) X-rays are concentrated in the southwest of Tycho, where recent Chandra observations have revealed high emissivity "stripes" associated with particles accelerated to the knee of the cosmic-ray spectrum. We do not find evidence of Ti-44, and we set limits on its presence and distribution within the SNR. These limits correspond to an upper-limit Ti-44 mass of M-44 < 2.4 x 10(-4) M-circle dot for a distance of 2.3 kpc. We perform a spatially resolved spectroscopic analysis of 66 regions across Tycho. We map the best-fit rolloff frequency of the hard X-ray spectra, and we compare these results to measurements of the shock expansion and ambient density. We find that the highest energy electrons are accelerated at the lowest densities and in the fastest shocks, with a steep dependence of the rolloff frequency with shock velocity. Such a dependence is predicted by models where the maximum energy of accelerated electrons is limited by the age of the SNR rather than by synchrotron losses, but this scenario requires far lower magnetic field strengths than those derived from observations in Tycho. One way to reconcile these discrepant findings is through shock obliquity effects, and future observational work is necessary to explore the role of obliquity in the particle acceleration process.
C1 [Lopez, Laura A.] Ohio State Univ, Dept Astron, 174 W 18Th Ave, Columbus, OH 43210 USA.
[Lopez, Laura A.] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Grefenstette, Brian W.; Harrison, Fiona A.; Madsen, Kristin K.] CALTECH, Cahill Ctr Astrophys, Pasadena, CA 91125 USA.
[Reynolds, Stephen P.] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
[An, Hongjun] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Boggs, Steven E.; Craig, William W.; Zoglauer, Andreas] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Christensen, Finn E.] Tech Univ Denmark, Natl Space Inst, DTU Space, DK-2800 Lyngby, Denmark.
[Eriksen, Kristoffer A.; Fryer, Chris L.] Los Alamos Natl Lab, CCS 2, Los Alamos, NM 87545 USA.
[Hailey, Charles J.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Stern, Daniel K.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Zhang, William W.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
RP Lopez, LA (reprint author), Ohio State Univ, Dept Astron, 174 W 18Th Ave, Columbus, OH 43210 USA.
EM lopez.513@osu.edu
RI Boggs, Steven/E-4170-2015;
OI Boggs, Steven/0000-0001-9567-4224; An, Hongjun/0000-0002-6389-9012;
Madsen, Kristin/0000-0003-1252-4891
FU NASA through Hubble Fellowship grant - Space Telescope Science Institute
[HST-HF2-51342.001]; NASA [NAS 5-26555, NNG08FD60C]
FX We acknowledge helpful discussions with Drs. Marco Miceli, Lorenzo
Sironi, and Patrick Slane. L.A.L. received support for this work from
NASA through Hubble Fellowship grant number HST-HF2-51342.001 awarded by
the Space Telescope Science Institute, which is operated by the
Association of Universities for Research in Astronomy, Inc., for NASA,
under contract NAS 5-26555. Additionally, the work was supported under
NASA contract NNG08FD60C and made use of data from the NuSTAR mission, a
project led by the California Institute of Technology, managed by the
Jet Propulsion Laboratory, and funded by NASA. We thank the NuSTAR
Operations, Software, and Calibration teams for support with the
execution and analysis of these observations. This research made use of
the NuSTAR Data Analysis Software (NuSTARDAS), jointly developed by the
ASI Science Data Center (ASDC, Italy) and the California Institute of
Technology (USA).
NR 74
TC 4
Z9 4
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD DEC 1
PY 2015
VL 814
IS 2
AR 132
DI 10.1088/0004-637X/814/2/132
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA DF6KA
UT WOS:000371463200001
ER
PT J
AU de la Figuera, J
Quesada, A
Martin-Garcia, L
Sanz, M
Oujja, M
Castillejo, M
Mascaraque, A
N'Diaye, AT
Foerster, M
Aballe, L
Marco, JF
AF de la Figuera, Juan
Quesada, Adrian
Martin-Garcia, Laura
Sanz, Mikel
Oujja, Mohamed
Castillejo, Marta
Mascaraque, Arantzazu
N'Diaye, Alpha T.
Foerster, Michael
Aballe, Lucia
Marco, Jose F.
TI Mossbauer and Magnetic Properties of Coherently Mixed Magnetite-Cobalt
Ferrite Grown by Infrared Pulsed-Laser Deposition
SO CROATICA CHEMICA ACTA
LA English
DT Article
DE cobalt ferrite; oxide spinels; pulsed laser deposition; Mossbauer
spectroscopy
ID COFE2O4; FILMS; SPECTROSCOPY
AB We have studied the magnetic properties and the composition of cobalt ferrite single crystal films on SrTiO3: Nb grown by infrared pulsed-laser deposition. Mossbauer spectra have been recorded from both the target used to grow the films and the films themselves. The MOssbauer spectra of the target taken at low temperatures show a strong dependence of the recoil free fraction of the octahedral sites with temperature. The films composition, with a coexistence of Co-enriched cobalt ferrite and magnetite, has been estimated assuming a similar ratio of the recoil free fractions of the films. X-ray absorption and x-ray magnetic circular dichroism measurements confirm the valence composition of the film and show ferromagnetic Fe-Co coupling in the films with a coercive field around 0.5 T at room temperature. The combination of these characterization techniques allows establishing the coherent structural and magnetic properties of this biphase system.
C1 [de la Figuera, Juan; Martin-Garcia, Laura; Sanz, Mikel; Oujja, Mohamed; Castillejo, Marta; Marco, Jose F.] CSIC, Inst Quim Fis Rocasolano, E-28006 Madrid, Spain.
[Quesada, Adrian] CSIC, Inst Ceram & Vidrio, E-28049 Madrid, Spain.
[Mascaraque, Arantzazu] Univ Complutense Madrid, E-28040 Madrid, Spain.
[N'Diaye, Alpha T.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Foerster, Michael; Aballe, Lucia] CELLS, ALBA Synchrotron Light Facil, ES-08290 Barcelona, Spain.
RP de la Figuera, J (reprint author), CSIC, Inst Quim Fis Rocasolano, E-28006 Madrid, Spain.
EM jfmarco@iqfr.csic.es
RI Marco, Jose/N-3176-2014; Mascaraque, Arantzazu/D-9504-2012; Quesada,
Adrian/L-6475-2014;
OI Marco, Jose/0000-0002-5147-1449; Mascaraque,
Arantzazu/0000-0002-2614-2862; Quesada, Adrian/0000-0002-6994-0514;
Sanz, Mikel/0000-0001-6160-3583
FU Spanish Ministry of Economy and Competitiveness (MINECO)
[MAT2012-38045-C04-01, CTQ2013-43086-P, MAT2013-48009-C4-1-P]; EU-FP7
NANOPYME Project [310516]; Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]; FPI from
the MINECO [BES-2013-063396]
FX This research was supported by the Spanish Ministry of Economy and
Competitiveness (MINECO) through Projects No. MAT2012-38045-C04-01,
CTQ2013-43086-P, and MAT2013-48009-C4-1-P and by the EU-FP7 NANOPYME
Project (No. 310516). The PEEM experiments were performed at the CIRCE
beamline of the ALBA Synchrotron Light Facility with the collaboration
of ALBA staff. The Advanced Light Source is supported by the Director,
Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231. L.M.-G.
acknowledges support from an FPI contract with reference BES-2013-063396
from the MINECO.
NR 26
TC 0
Z9 0
U1 1
U2 7
PU CROATIAN CHEMICAL SOC
PI ZAGREB
PA MARULICEV TRG 19/II, 41001 ZAGREB, CROATIA
SN 0011-1643
EI 1334-417X
J9 CROAT CHEM ACTA
JI Croat. Chem. Acta
PD DEC
PY 2015
VL 88
IS 4
DI 10.5562/cca2752
PG 8
WC Chemistry, Multidisciplinary
SC Chemistry
GA DF5EJ
UT WOS:000371374300010
ER
PT J
AU Savage, TJ
Dunphy, DR
Harbaugh, S
Kelley-Loughnane, N
Harper, JC
Brinker, CJ
AF Savage, Travis J.
Dunphy, Darren R.
Harbaugh, Svetlana
Kelley-Loughnane, Nancy
Harper, Jason C.
Brinker, C. Jeffrey
TI Influence of Silica Matrix Composition and Functional Component
Additives on the Bioactivity and Viability of Encapsulated Living Cells
SO ACS BIOMATERIALS SCIENCE & ENGINEERING
LA English
DT Article
DE living hybrid biomaterials; cell encapsulation; glycerol modified
silanes; bioactivity; cell viability; whole-cell-based biosensors
ID SOL-GEL MATERIALS; GREEN FLUORESCENT PROTEINS; SACCHAROMYCES-CEREVISIAE;
NONCULTURABLE STATE; PLANT-CELLS; BACTERIA; ENTRAPMENT; IMMOBILIZATION;
BIOMOLECULES; INTEGRATION
AB The remarkable impact encapsulation matrix chemistry can have on the bioactivity and viability of integrated living cells is reported. Two silica chemistries (aqueous silicate and alkoxysilane), and a functional component additive (glycerol), are employed to generate three distinct silica matrices. These matrices are used to encapsulate living E. coli cells engineered with a synthetic riboswitch for cell-based biosensing. Following encapsulation, membrane integrity, reproductive capability, and riboswitch-based protein expression levels and rates are measured over a 5 week period. Striking differences in E. coli bioactivity, viability, and biosensing performance are observed for cells encapsulated within the different matrices. E. coli cells encapsulated for 35 days in aqueous silicate-based (AqS) matrices showed relatively low membrane integrity, but high reproductive capability in comparison to cells encapsulated in glycerol containing sodium silicate-based (AqS + g) and alkoxysilane-based (PGS) gels. Further, cells in sodium silicate-based matrices showed increasing fluorescence output over time, resulting in a 1.8-fold higher fluorescence level, and a faster expression rate, over cells free in solution. This unusual and unique combination of biological properties demonstrates that careful design of the encapsulation matrix chemistry can improve functionality of the biocomposite material, and result in new and unexpected physiological states.
C1 [Savage, Travis J.; Dunphy, Darren R.; Brinker, C. Jeffrey] Univ New Mexico, Chem & Biol Engn, Albuquerque, NM 87106 USA.
[Harbaugh, Svetlana; Kelley-Loughnane, Nancy] Air Force Res Lab, Human Effectiveness Directorate, Dayton, OH 45433 USA.
[Harper, Jason C.] Sandia Natl Labs, Bioenergy & Biodef Technol, POB 5800, Albuquerque, NM 87185 USA.
[Brinker, C. Jeffrey] Sandia Natl Labs, Selfassembled Mat, Albuquerque, NM 87185 USA.
RP Harper, JC (reprint author), Sandia Natl Labs, Bioenergy & Biodef Technol, POB 5800, Albuquerque, NM 87185 USA.
EM Jason.Harper@sandia.gov; cjbrink@sandia.gov
FU Air Force Office of Scientific Research [FA 9550-10-1-0054]; U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, Division of Materials Sciences and Engineering; Defense Treat
Reduction Agency (DTRA) Chem. Bio. Basic Research Program [B0844671,
B0947321, B01144531]; Sandia Laboratory Directed Research and
Development Program; U.S. Department of Energy's National Nuclear
Security Administration [DE-AC04-94AL85000]
FX This work was funded by the Air Force Office of Scientific Research
(Grant FA 9550-10-1-0054), the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, Division of Materials Sciences
and Engineering, the Defense Treat Reduction Agency (DTRA) Chem. Bio.
Basic Research Program (Grants B0844671, B0947321, B01144531), and the
Sandia Laboratory Directed Research and Development Program. Sandia
National Laboratories is a multiprogram laboratory operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Company, for
the U.S. Department of Energy's National Nuclear Security Administration
under Contract DE-AC04-94AL85000.
NR 50
TC 0
Z9 0
U1 10
U2 21
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2373-9878
J9 ACS BIOMATER SCI ENG
JI ACS Biomater. Sci. Eng.
PD DEC
PY 2015
VL 1
IS 12
BP 1231
EP 1238
DI 10.1021/acsbiomaterials.5b00261
PG 8
WC Materials Science, Biomaterials
SC Materials Science
GA DE5MO
UT WOS:000370675300006
ER
PT J
AU Polson, N
Sokolov, V
AF Polson, Nicholas
Sokolov, Vadim
TI BAYESIAN ANALYSIS OF TRAFFIC FLOW ON INTERSTATE I-55: THE LWR MODEL
SO ANNALS OF APPLIED STATISTICS
LA English
DT Article
DE Traffic flow; intelligent transportation system; LWR model; particle
filtering; Bayesian posterioor; traffic prediction
ID STATE ESTIMATION; PARTICLE FILTERS; NETWORK; INFORMATION; SIMULATION;
HIGHWAY; ROADS; WAVES
AB Transportation departments take actions to manage traffic flow and reduce travel times based on estimated current and projected traffic conditions. Travel time estimates and forecasts require information on traffic density which are combined with a model to project traffic flow such as the Lighthill-Whitham-Richards (LWR) model. We develop a particle filtering and learning algorithm to estimate the current traffic density state and the LWR parameters. These inputs are related to the so-called fundamental diagram, which describes the relationship between traffic flow and density. We build on existing methodology by allowing real-time updating of the posterior uncertainty for the critical density and capacity parameters. Our methodology is applied to traffic flow data from interstate highway I-55 in Chicago. We provide a real-time data analysis of how to learn the drop in capacity as a result of a major traffic accident. Our algorithm allows us to accurately assess the uncertainty of the current traffic state at shock waves, where the uncertainty is a mixture distribution. We show that Bayesian learning can correct the estimation bias that is present in the model with fixed parameters.
C1 [Polson, Nicholas] Univ Chicago, Booth Sch Business, Chicago, IL 60637 USA.
[Sokolov, Vadim] Argonne Natl Lab, Lemont, IL 60439 USA.
RP Polson, N (reprint author), Univ Chicago, Booth Sch Business, Chicago, IL 60637 USA.
EM ngp@chicagobooth.edu; vs@anl.gov
NR 42
TC 1
Z9 1
U1 5
U2 7
PU INST MATHEMATICAL STATISTICS
PI CLEVELAND
PA 3163 SOMERSET DR, CLEVELAND, OH 44122 USA
SN 1932-6157
J9 ANN APPL STAT
JI Ann. Appl. Stat.
PD DEC
PY 2015
VL 9
IS 4
BP 1864
EP 1888
DI 10.1214/15-AOAS853
PG 25
WC Statistics & Probability
SC Mathematics
GA DE2GR
UT WOS:000370445600006
ER
PT J
AU Dodsworth, JA
Ong, JC
Williams, AJ
Dohnalkova, AC
Hedlund, BP
AF Dodsworth, Jeremy A.
Ong, John C.
Williams, Amanda J.
Dohnalkova, Alice C.
Hedlund, Brian P.
TI Thermocrinis jamiesonii sp nov., a thiosulfate-oxidizing, autotropic
thermophile isolated from a geothermal spring
SO INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
LA English
DT Article
ID YELLOWSTONE-NATIONAL-PARK; RIBOSOMAL-RNA; GEN. NOV.; PHYLOGENETIC
CHARACTERIZATION; MICROBIAL COMMUNITY; GENOME SEQUENCE; HOT-SPRINGS;
GEOCHEMISTRY; AQUIFICALES; CHLOROFLEXI
AB An obligately thermophilic, chemolithotrophic, microaerophilic bacterium, designated strain GBS1(T), was isolated from the water column of Great Boiling Spring, Nevada, USA. Thiosulfate was required for growth. Although capable of autotrophy, growth of GBS1(T) was enhanced in the presence of acetate, peptone or Casamino acids. Growth occurred at 70-85 degrees C with an optimum at 80 degrees C, at pH 6.50-7.75 with an optimum at pH 7.25, with 0.5-8 % oxygen with an optimum at 1-2 % and with <= 200 mM NaCl. The doubling time under optimal growth conditions was 1.3 h, with a final mean cell density of 6.2 +/- 0.5 x 10(7) cells ml(-1). Non-motile, rod-shaped cells 1.4-2.4 x 0.4-0.6 mu m in size occurred singly or in pairs. The major cellular fatty acids (>5 % of the total) were C-20 : 1 omega 9c, C-18 : 0, C-16 : 0 and C-20 : 0. Phylogenetic analysis of the GBS1(T) 16S rRNA gene sequence indicated an affiliation with Thermocrinis ruber and other species of the genus Thermocrinis, but determination of 16S rRNA gene sequence similarity (<= 97.10 %) and in silico estimated DNA-DNA hybridization values (<= 18.4 %) with the type strains of recognized Thermocrinis species indicate that the novel strain is distinct from described species. Based on phenotypic, genotypic and phylogenetic characteristics, a novel species, Thermocrinis jamiesonii sp. nov., is proposed, with GBS1(T) (=JCM 19133(T)=DSM 27162(T)) as the type strain.
C1 [Dodsworth, Jeremy A.] Calif State Univ San Bernardino, Dept Biol, San Bernardino, CA 92407 USA.
[Dodsworth, Jeremy A.; Ong, John C.; Williams, Amanda J.; Hedlund, Brian P.] Univ Nevada, Sch Life Sci, Las Vegas, NV 89154 USA.
[Dohnalkova, Alice C.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Dodsworth, JA (reprint author), Calif State Univ San Bernardino, Dept Biol, San Bernardino, CA 92407 USA.
EM jdodsworth@csusb.edu
FU US federal government: National Science Foundation [MCB-0546865, OISE
0968421]; US federal government: NASA [EXONNX11AR78G]; US federal
government: JGI [CSP-237]; US federal government: Office of Science of
the Department of Energy [DEAC02-05CH11231]; EMSL Rapid grant [47730]
FX We thank David and Sandy Jamieson for generous access to GBS and
logistical support during sampling excursions, Toniann DeSouza for
assistance with determination of growth rates, and Senthil Murugapiran
for assistance with phylogenetics. This work was supported by grants
funded by the following agencies of the US federal government: the
National Science Foundation (MCB-0546865, OISE 0968421), NASA
(EXONNX11AR78G) and the JGI (CSP-237), supported by the Office of
Science of the Department of Energy under contract DEAC02-05CH11231.
Electron microscopy was performed at the Environmental Molecular
Sciences Laboratory (EMSL), a national scientific user facility
sponsored by the US Department of Energy's Office of Biological and
Environmental Research located at Pacific North-west National
Laboratory, with funding from an EMSL Rapid 47730 grant. B. P. H. was
supported by a generous donation from Greg Fullmer through the UNLV
Foundation.
NR 29
TC 0
Z9 0
U1 1
U2 2
PU SOC GENERAL MICROBIOLOGY
PI READING
PA MARLBOROUGH HOUSE, BASINGSTOKE RD, SPENCERS WOODS, READING RG7 1AG,
BERKS, ENGLAND
SN 1466-5026
EI 1466-5034
J9 INT J SYST EVOL MICR
JI Int. J. Syst. Evol. Microbiol.
PD DEC
PY 2015
VL 65
BP 4769
EP 4775
DI 10.1099/ijsem.0.000647
PN 12
PG 7
WC Microbiology
SC Microbiology
GA DE2ME
UT WOS:000370460600073
PM 26419502
ER
PT J
AU Smith, SY
Collinson, ME
Benedict, JC
Leong-Skornickova, J
Marone, F
Parkinson, D
AF Smith, Selena Y.
Collinson, Margaret E.
Benedict, John C.
Leong-Skornickova, Jana
Marone, Federica
Parkinson, Dilworth
TI Revision of putative Alpinia (Zingiberaceae) fossils from the Paleogene
and Neogene of western Europe
SO PALAEONTOGRAPHICA ABTEILUNG B-PALAOPHYTOLOGIE
LA English
DT Article
DE Caricoidea; Carpolithes; Cyperaceae; Eocene; Miocene; seeds; synchrotron
X-ray tomographic microscopy; Zingiberales
ID EOCENE; SEED
AB The fossil floras described by Dieter MAI and Harald WALTHER are invaluable for understanding the past plant diversity in Europe, and provide important information on the occurrence of taxa in the fossil record that is critical for evolutionary studies. Among the taxa they recognized were seeds assigned to the extant genus Alpinia ROXB-. (Zingiberaceae, Zingiberales). We reinvestigated. 28 specimens that were assigned to Alpinia arnensis (CHANDLER) MAI, Alpinia cf arnensis, and Alpinia bivascularis MAI from the Ypresian (lower Eocene) of the UK, upper Eocene of Germany, and lower Miocene of Germany using non-destructive synchrotron-based X-ray tomography to reveal internal anatomy. None of the samples studied show an anatomy consistent with extant Alpinia or even Zingiberales. The fossils lack the globose shape, often striate external surface, seed coat structure, operculum, and micropylar collar seen in all Alpinia, and lack the chalazal chamber seen in many Alpinia species. Two specimens from the lower Miocene of Germany showed the structure of fruits of Caricoidea CHANDLER (Cyperaceae) with a single-layered exocarp, thick mesocarp, and. sclerified endocarp. The other specimens are recognized as Carpolithes albolutum nom. nov. (incertae sedis) from the Ypresian of the UK, C. phoenixnordensis sp. nov. (incertae sedis) from the upper Eocene of Germany, C. bivascularis comb. nov. (incertae sedis) from the lower Miocene of Germany as well as indeterminate tegmens from the lower Miocene of Germany. This reinvestigation demonstrates that there is, as yet, no confirmed fossil record for the extant genus Alpinia. Furthermore, at least four different taxa are recognized from what had been two extinct species, enhancing our understanding of these important European Cenozoic carpofloras.
C1 [Smith, Selena Y.; Benedict, John C.] Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA.
[Smith, Selena Y.] Univ Michigan, Museum Paleontol, Ann Arbor, MI 48109 USA.
[Collinson, Margaret E.] Royal Holloway Univ London, Dept Earth Sci, London, England.
[Collinson, Margaret E.] Nat Hist Museum, Dept Earth Sci, London SW7 5BD, England.
[Leong-Skornickova, Jana] Natl Pk Board, Singapore Bot Gardens, Herbarium, Singapore, Singapore.
[Marone, Federica] Paul Scherrer Inst, Swiss Light Source, Villigen, Switzerland.
[Parkinson, Dilworth] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Smith, SY (reprint author), Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA.
EM sysmith@umich.edu
RI Marone, Federica/J-4420-2013
NR 33
TC 2
Z9 2
U1 0
U2 0
PU E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG
PI STUTTGART
PA NAEGELE U OBERMILLER, SCIENCE PUBLISHERS, JOHANNESSTRASSE 3A, D 70176
STUTTGART, GERMANY
SN 0375-0299
J9 PALAEONTOGR ABT B
JI Palaeontogr. Abt. B-Palaophytol.
PD DEC
PY 2015
VL 293
IS 1-6
SI SI
BP 101
EP 123
PG 23
WC Paleontology
SC Paleontology
GA DE0JF
UT WOS:000370310500005
ER
PT J
AU Adams, D
Alekou, A
Apollonio, M
Asfandiyarov, R
Barber, G
Barclay, P
de Bari, A
Bayes, R
Bayliss, V
Bene, P
Bertoni, R
Blackmore, VJ
Blondel, A
Blot, S
Bogomilov, M
Bonesini, M
Booth, CN
Bowring, D
Boyd, S
Bradshaw, TW
Bravar, U
Bross, AD
Cadoux, F
Capponi, M
Carlisle, T
Cecchet, G
Charnley, C
Chignoli, F
Cline, D
Cobb, JH
Colling, G
Collomb, N
Coney, L
Cooke, P
Courthold, M
Cremaldi, LM
Debieux, S
DeMello, A
Dick, A
Dobbs, A
Dornan, P
Drielsma, F
Filthaut, F
Fitzpatrick, T
Franchini, P
Francis, V
Fry, L
Gallagher, A
Gamet, R
Gardener, R
Gourlay, S
Grant, A
Graulich, JS
Greis, J
Griffiths, S
Hanlet, P
Hansen, OM
Hanson, GG
Hart, TL
Hartnett, T
Hayler, T
Heidt, C
Hills, M
Hodgson, P
Hunt, C
Husi, C
Iaciofano, A
Ishimoto, S
Kafka, G
Kaplan, DM
Karadzhov, Y
Kim, YK
Kuno, Y
Kyberd, P
Lagrange, JB
Langlands, J
Lau, W
Leonova, M
Li, D
Lintern, A
Littlefield, M
Long, K
Luo, T
Macwaters, C
Martlew, B
Martyniak, J
Masciocchi, F
Mazza, R
Middleton, S
Moretti, A
Moss, A
Muir, A
Mullacrane, I
Nebrensky, JJ
Neuffer, D
Nichols, A
Nicholson, R
Nicola, L
Messomo, EN
Nugent, JC
Oates, A
Onel, Y
Orestano, D
Overton, E
Owens, P
Palladino, V
Pasternak, J
Pastore, F
Pidcott, C
Popovic, M
Preece, R
Prestemon, S
Rajaram, D
Ramberger, S
Rayner, MA
Ricciardi, S
Roberts, TJ
Robinson, M
Rogers, C
Ronald, K
Rothenfusser, K
Rubinov, P
Rucinski, P
Sakamato, H
Sanders, DA
Sandstrom, R
Santos, E
Savidge, T
Smith, PJ
Snopok, P
Soler, FJP
Speirs, D
Stanley, T
Stokes, G
Summers, DJ
Tarrant, J
Taylor, I
Tortora, L
Torun, Y
Tsenov, R
Tunnell, CD
Uchida, MA
Vankova-Kirilova, G
Virostek, S
Vretenar, M
Warburton, P
Watson, S
White, C
Whyte, CG
Wilson, A
Wisting, H
Yang, X
Young, A
Zisman, M
AF Adams, D.
Alekou, A.
Apollonio, M.
Asfandiyarov, R.
Barber, G.
Barclay, P.
de Bari, A.
Bayes, R.
Bayliss, V.
Bene, P.
Bertoni, R.
Blackmore, V. J.
Blondel, A.
Blot, S.
Bogomilov, M.
Bonesini, M.
Booth, C. N.
Bowring, D.
Boyd, S.
Bradshaw, T. W.
Bravar, U.
Bross, A. D.
Cadoux, F.
Capponi, M.
Carlisle, T.
Cecchet, G.
Charnley, C.
Chignoli, F.
Cline, D.
Cobb, J. H.
Colling, G.
Collomb, N.
Coney, L.
Cooke, P.
Courthold, M.
Cremaldi, L. M.
Debieux, S.
DeMello, A.
Dick, A.
Dobbs, A.
Dornan, P.
Drielsma, F.
Filthaut, F.
Fitzpatrick, T.
Franchini, P.
Francis, V.
Fry, L.
Gallagher, A.
Gamet, R.
Gardener, R.
Gourlay, S.
Grant, A.
Graulich, J. S.
Greis, J.
Griffiths, S.
Hanlet, P.
Hansen, O. M.
Hanson, G. G.
Hart, T. L.
Hartnett, T.
Hayler, T.
Heidt, C.
Hills, M.
Hodgson, P.
Hunt, C.
Husi, C.
Iaciofano, A.
Ishimoto, S.
Kafka, G.
Kaplan, D. M.
Karadzhov, Y.
Kim, Y. K.
Kuno, Y.
Kyberd, P.
Lagrange, J. -B.
Langlands, J.
Lau, W.
Leonova, M.
Li, D.
Lintern, A.
Littlefield, M.
Long, K.
Luo, T.
Macwaters, C.
Martlew, B.
Martyniak, J.
Masciocchi, F.
Mazza, R.
Middleton, S.
Moretti, A.
Moss, A.
Muir, A.
Mullacrane, I.
Nebrensky, J. J.
Neuffer, D.
Nichols, A.
Nicholson, R.
Nicola, L.
Messomo, E. Noah
Nugent, J. C.
Oates, A.
Onel, Y.
Orestano, D.
Overton, E.
Owens, P.
Palladino, V.
Pasternak, J.
Pastore, F.
Pidcott, C.
Popovic, M.
Preece, R.
Prestemon, S.
Rajaram, D.
Ramberger, S.
Rayner, M. A.
Ricciardi, S.
Roberts, T. J.
Robinson, M.
Rogers, C.
Ronald, K.
Rothenfusser, K.
Rubinov, P.
Rucinski, P.
Sakamato, H.
Sanders, D. A.
Sandstrom, R.
Santos, E.
Savidge, T.
Smith, P. J.
Snopok, P.
Soler, F. J. P.
Speirs, D.
Stanley, T.
Stokes, G.
Summers, D. J.
Tarrant, J.
Taylor, I.
Tortora, L.
Torun, Y.
Tsenov, R.
Tunnell, C. D.
Uchida, M. A.
Vankova-Kirilova, G.
Virostek, S.
Vretenar, M.
Warburton, P.
Watson, S.
White, C.
Whyte, C. G.
Wilson, A.
Wisting, H.
Yang, X.
Young, A.
Zisman, M.
TI Electron-muon ranger: performance in the MICE muon beam
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
DE Particle identification methods; Particle tracking detectors;
Performance of High Energy Physics Detectors; Calorimeters
ID DESIGN
AB The Muon Ionization Cooling Experiment (MICE) will perform a detailed study of ionization cooling to evaluate the feasibility of the technique. To carry out this program, MICE requires an efficient particle-identification (PID) system to identify muons. The Electron-Muon Ranger (EMR) is a fully-active tracking-calorimeter that forms part of the PID system and tags muons that traverse the cooling channel without decaying. The detector is capable of identifying electrons with an efficiency of 98.6%, providing a purity for the MICE beam that exceeds 99.8%. The EMR also proved to be a powerful tool for the reconstruction of muon momenta in the range 100-280MeV/c.
C1 [Bogomilov, M.; Tsenov, R.; Vankova-Kirilova, G.] Sofia Univ St Kliment Ohridski, Dept Atom Phys, Sofia, Bulgaria.
[Bertoni, R.; Bonesini, M.; Chignoli, F.; Mazza, R.] Sez INFN Milano Bicocca, Dipartimento Fis G Occhialini, Milan, Italy.
[Palladino, V.] Sez INFN Napoli, Naples, Italy.
[Palladino, V.] Univ Federico II, Dipartimento Fis, Naples, Italy.
[de Bari, A.; Cecchet, G.] Sez INFN Pavia, Pavia, Italy.
[de Bari, A.; Cecchet, G.] Univ Pavia, Dipartimento Fis, I-27100 Pavia, Italy.
[Capponi, M.; Iaciofano, A.; Orestano, D.; Pastore, F.; Tortora, L.] Sez INFN Roma Tre, Rome, Italy.
[Capponi, M.; Iaciofano, A.; Orestano, D.; Pastore, F.; Tortora, L.] Univ Rome, Dipartimento Fis, Rome, Italy.
[Kuno, Y.; Sakamato, H.] Osaka Univ, Dept Phys, Grad Sch Sci, Toyonaka, Osaka 560, Japan.
[Ishimoto, S.] High Energy Accelerator Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki, Japan.
[Filthaut, F.] NIKHEF H, NL-1009 DB Amsterdam, Netherlands.
[Hansen, O. M.; Ramberger, S.; Vretenar, M.] CERN, Geneva, Switzerland.
[Alekou, A.; Asfandiyarov, R.; Bene, P.; Blondel, A.; Cadoux, F.; Debieux, S.; Drielsma, F.; Graulich, J. S.; Husi, C.; Karadzhov, Y.; Masciocchi, F.; Nicola, L.; Messomo, E. Noah; Rothenfusser, K.; Sandstrom, R.; Wisting, H.] Univ Geneva, Sect Phys, DPNC, Geneva, Switzerland.
[Alekou, A.; Gallagher, A.; Grant, A.; Martlew, B.; Moss, A.; Muir, A.; Oates, A.] STFC, Daresbury Lab, Daresbury, Cheshire, England.
[Adams, D.; Barclay, P.; Bayliss, V.; Bradshaw, T. W.; Courthold, M.; Francis, V.; Fry, L.; Hayler, T.; Hills, M.; Lintern, A.; Macwaters, C.; Nichols, A.; Preece, R.; Ricciardi, S.; Rogers, C.; Stanley, T.; Tarrant, J.; Watson, S.; Wilson, A.] STFC, Rutherford Appleton Lab, Didcot, Oxon, England.
[Bayes, R.; Nugent, J. C.; Soler, F. J. P.] Univ Glasgow, Sch Phys & Astron, Glasgow, Lanark, Scotland.
[Cooke, P.; Gamet, R.] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England.
[Alekou, A.; Apollonio, M.; Barber, G.; Colling, G.; Dobbs, A.; Dornan, P.; Hunt, C.; Lagrange, J. -B.; Long, K.; Martyniak, J.; Middleton, S.; Pasternak, J.; Santos, E.; Savidge, T.; Uchida, M. A.] Univ London Imperial Coll Sci Technol & Med, Dept Phys, Blackett Lab, London, England.
[Blackmore, V. J.; Carlisle, T.; Cobb, J. H.; Lau, W.; Rayner, M. A.; Tunnell, C. D.] Univ Oxford, Dept Phys, Oxford, England.
[Booth, C. N.; Hodgson, P.; Langlands, J.; Nicholson, R.; Overton, E.; Robinson, M.; Smith, P. J.] Univ Sheffield, Dept Phys & Astron, Sheffield, S Yorkshire, England.
[Dick, A.; Ronald, K.; Speirs, D.; Whyte, C. G.; Young, A.] Univ Strathclyde, Dept Phys, Glasgow, Lanark, Scotland.
[Boyd, S.; Franchini, P.; Greis, J.; Pidcott, C.; Taylor, I.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Gardener, R.; Kyberd, P.; Littlefield, M.; Nebrensky, J. J.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Bross, A. D.; Fitzpatrick, T.; Leonova, M.; Moretti, A.; Neuffer, D.; Popovic, M.; Rubinov, P.; Rucinski, P.] Fermilab Natl Accelerator Lab, Batavia, IL USA.
[Roberts, T. J.] Muons Inc, Batavia, IL USA.
[Bowring, D.; DeMello, A.; Gourlay, S.; Li, D.; Prestemon, S.; Virostek, S.; Zisman, M.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Hanlet, P.; Kafka, G.; Kaplan, D. M.; Rajaram, D.; Snopok, P.; Torun, Y.] IIT, Chicago, IL 60616 USA.
[Blot, S.; Kim, Y. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Bravar, U.] Univ New Hampshire, Durham, NH 03824 USA.
[Onel, Y.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
[Alekou, A.; Blackmore, V. J.; Cline, D.; Iaciofano, A.; Macwaters, C.; Mullacrane, I.; Yang, X.] Univ Mississippi, Oxford, MS USA.
[Adams, D.; Bradshaw, T. W.; Cadoux, F.; Coney, L.; Hanson, G. G.; Heidt, C.; Karadzhov, Y.; Palladino, V.] Univ Calif Riverside, Riverside, CA 92521 USA.
RP Drielsma, F (reprint author), Univ Geneva, Sect Phys, DPNC, Geneva, Switzerland.
EM francois.drielsma@unige.ch
RI Soler, Paul/E-8464-2011; Asfandiyarov, Ruslan/B-5407-2017;
OI Soler, Paul/0000-0002-4893-3729; Asfandiyarov,
Ruslan/0000-0002-6631-9220; Nebrensky, Jindrich/0000-0002-8412-4259;
Torun, Yagmur/0000-0003-2336-6585
FU Department of Energy; National Science Foundation (U.S.A.); Instituto
Nazionale di Fisica Nucleare (Italy); Science and Technology Facilities
Council (U.K.); European Community under the European Commission
Framework Programme 7 (AIDA project) [262025]; European Community under
the European Commission Framework Programme 7 (TIARA project) [261905];
European Community under the European Commission Framework Programme 7
(EuCARD); Japan Society for the Promotion of Science; Swiss National
Science Foundation
FX The work described here was made possible by grants from Department of
Energy and National Science Foundation (U.S.A.), the Instituto Nazionale
di Fisica Nucleare (Italy), the Science and Technology Facilities
Council (U.K.), the European Community under the European Commission
Framework Programme 7 (AIDA project, grant agreement no. 262025, TIARA
project, grant agreement no. 261905, and EuCARD), the Japan Society for
the Promotion of Science and the Swiss National Science Foundation, in
the framework of the SCOPES programme. We gratefully acknowledge all
sources of support.
NR 22
TC 2
Z9 2
U1 1
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD DEC
PY 2015
VL 10
AR P12012
DI 10.1088/1748-0221/10/12/P12012
PG 22
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA DD5XP
UT WOS:000369998500045
ER
PT J
AU Bignell, LJ
Beznosko, D
Diwan, MV
Hans, S
Jaffe, DE
Kettell, S
Rosero, R
Themann, HW
Viren, B
Worcester, E
Yeh, M
Zhang, C
AF Bignell, L. J.
Beznosko, D.
Diwan, M. V.
Hans, S.
Jaffe, D. E.
Kettell, S.
Rosero, R.
Themann, H. W.
Viren, B.
Worcester, E.
Yeh, M.
Zhang, C.
TI Characterization and modeling of a Water-based Liquid Scintillator
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
DE Scintillators, scintillation and light emission processes (solid, gas
and liquid scintillators); Scintillators and scintillating fibres and
light guides; Liquid detectors; Detector modelling and simulations I
(interaction of radiation with matter, interaction of photons with
matter, interaction of hadrons with matter etc)
AB We have characterised Water-based Liquid Scintillator (WbLS) using low energy protons, UV-VIS absorbance, and fluorescence spectroscopy. We have also developed and validated a simulation model that describes the behaviour of WbLS in our detector configurations for proton beam energies of 210MeV, 475 MeV, and 2 GeV and for two WbLS compositions. Our results have enabled us to estimate the light yield and ionisation quenching of WbLS, as well as to understand the influence of the wavelength shifting of Cherenkov light on our measurements. These results are relevant to the suitability of WbLS materials for next generation intensity frontier experiments.
C1 [Bignell, L. J.; Beznosko, D.; Diwan, M. V.; Jaffe, D. E.; Kettell, S.; Themann, H. W.; Viren, B.; Worcester, E.; Zhang, C.] Brookhaven Natl Lab, Dept Phys, Penn St, Upton, NY 11973 USA.
[Hans, S.; Rosero, R.; Yeh, M.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Beznosko, D.] Nazarbayev Univ, Dept Phys, Astana, Kazakhstan.
[Themann, H. W.] Inst for Basic Sci Korea, Ctr Ax & Precis Phys Res, Daejeon, South Korea.
RP Bignell, LJ (reprint author), Brookhaven Natl Lab, Dept Phys, Penn St, Upton, NY 11973 USA.
EM lbignell@bnl.gov
OI Beznosko, Dmitriy/0000-0003-4828-8659; Zhang, Chao/0000-0003-2298-6272
FU Brookhaven National Laboratory [LDRD 12-033]; U.S. Department of Energy
[KA2501032]
FX We would like to thank Mike Sivertz, Adam Rusek, and Chiara La Tessa at
the NASA Space Radiation Laboratory, as well as Ken Sexton for their
assistance with this study. This research was supported by LDRD 12-033
of Brookhaven National Laboratory and by the U.S. Department of Energy,
contract number KA2501032.
NR 15
TC 1
Z9 1
U1 1
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD DEC
PY 2015
VL 10
AR P12009
DI 10.1088/1748-0221/10/12/P12009
PG 16
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA DD5XP
UT WOS:000369998500042
ER
PT J
AU Chefdeville, M
Karyotakis, Y
Repond, J
Schlereth, J
Xia, L
Eigen, G
Marshall, JS
Thomson, MA
Ward, DR
Tehrani, NA
Apostolakis, J
Dannheim, D
Elsener, K
Folger, G
Grefe, C
Ivantchenko, V
Killenberg, M
Klempt, W
van der Kraaij, E
Linssen, L
Lucaci-Timoce, AI
Munnich, A
Poss, S
Ribon, A
Roloff, P
Sailer, A
Schlatter, D
Sicking, E
Strube, J
Uzhinskiy, V
Chang, S
Khan, A
Kim, DH
Kong, DJ
Oh, YD
Blazey, GC
Dyshkant, A
Francis, K
Zutshi, V
Giraud, J
Grondin, D
Hostachy, JY
Brianne, E
Cornett, U
David, D
Falley, G
Gadow, K
Gottlicher, P
Gunter, C
Hartbrich, O
Hermberg, B
Irles, A
Karstensen, S
Krivan, F
Kruger, K
Kvasnicka, J
Lu, S
Lutz, B
Morozov, S
Morgunov, V
Neubuser, C
Provenza, A
Reinecke, M
Sefkow, F
Smirnov, P
Terwort, M
Tran, HL
Vargas-Trevino, A
Garutti, E
Laurien, S
Matysek, M
Ramilli, M
Schroder, S
Briggl, K
Eckert, P
Harion, T
Munwes, Y
Schultz-Coulon, HC
Shen, W
Stamen, R
Bilki, B
Onel, Y
Kawagoe, K
Hirai, H
Sudo, Y
Suehara, T
Sumida, H
Takada, S
Tomita, T
Yoshioka, T
Wing, M
Alamillo, EC
Fouz, MC
Marin, J
Puerta-Pelayo, J
Verdugo, A
Bobchenko, B
Chadeeva, M
Danilov, M
Markin, O
Mizuk, R
Novikov, E
Rusinov, V
Tarkovsky, E
Kirikova, N
Kozlov, V
Smirnov, P
Soloviev, Y
Besson, D
Buzhan, P
Popova, E
Gabriel, M
Kiesling, C
van der Kolk, N
Seidel, K
Simon, F
Soldner, C
Szalay, M
Tesar, M
Weuste, L
Amjad, MS
Bonis, J
Cornebise, P
Richard, F
Poschl, R
Rouene, J
Thiebault, A
Anduze, M
Balagura, V
Boudry, V
Brient, JC
Cizel, JB
Cornat, R
Frotin, M
Gastaldi, F
Haddad, Y
Magniette, F
Nanni, J
Pavy, S
Rubio-Roy, M
Shpak, K
Tran, TH
Videau, H
Yu, D
Callier, S
di Lorenzo, SC
Dulucq, F
Fleury, J
Martin-Chassard, G
de la Taille, C
Raux, L
Seguin-Moreau, N
Cvach, J
Gallus, P
Havranek, M
Janata, M
Kovalcuk, M
Kvasnicka, J
Lednicky, D
Marcisovsky, M
Polak, I
Popule, J
Tomasek, L
Tomasek, M
Ruzicka, P
Sicho, P
Smolik, J
Vrba, V
Zalesak, J
Ieki, S
Kamiya, Y
Ootani, W
Shibata, N
Chen, S
Jeans, D
Komamiya, S
Kozakai, C
Nakanishi, H
Gotze, M
Sauer, J
Weber, S
Zeitnitz, C
AF Chefdeville, M.
Karyotakis, Y.
Repond, J.
Schlereth, J.
Xia, L.
Eigen, G.
Marshall, J. S.
Thomson, M. A.
Ward, D. R.
Tehrani, N. Alipour
Apostolakis, J.
Dannheim, D.
Elsener, K.
Folger, G.
Grefe, C.
Ivantchenko, V.
Killenberg, M.
Klempt, W.
van der Kraaij, E.
Linssen, L.
Lucaci-Timoce, A. -I.
Muennich, A.
Poss, S.
Ribon, A.
Roloff, P.
Sailer, A.
Schlatter, D.
Sicking, E.
Strube, J.
Uzhinskiy, V.
Chang, S.
Khan, A.
Kim, D. H.
Kong, D. J.
Oh, Y. D.
Blazey, G. C.
Dyshkant, A.
Francis, K.
Zutshi, V.
Giraud, J.
Grondin, D.
Hostachy, J. -Y.
Brianne, E.
Cornett, U.
David, D.
Falley, G.
Gadow, K.
Goettlicher, P.
Guenter, C.
Hartbrich, O.
Hermberg, B.
Irles, A.
Karstensen, S.
Krivan, F.
Krueger, K.
Kvasnicka, J.
Lu, S.
Lutz, B.
Morozov, S.
Morgunov, V.
Neubueser, C.
Provenza, A.
Reinecke, M.
Sefkow, F.
Smirnov, P.
Terwort, M.
Tran, H. L.
Vargas-Trevino, A.
Garutti, E.
Laurien, S.
Matysek, M.
Ramilli, M.
Schroeder, S.
Briggl, K.
Eckert, P.
Harion, T.
Munwes, Y.
Schultz-Coulon, H. -Ch.
Shen, W.
Stamen, R.
Bilki, B.
Onel, Y.
Kawagoe, K.
Hirai, H.
Sudo, Y.
Suehara, T.
Sumida, H.
Takada, S.
Tomita, T.
Yoshioka, T.
Wing, M.
Alamillo, E. Calvo
Fouz, M. -C.
Marin, J.
Puerta-Pelayo, J.
Verdugo, A.
Bobchenko, B.
Chadeeva, M.
Danilov, M.
Markin, O.
Mizuk, R.
Novikov, E.
Rusinov, V.
Tarkovsky, E.
Kirikova, N.
Kozlov, V.
Smirnov, P.
Soloviev, Y.
Besson, D.
Buzhan, P.
Popova, E.
Gabriel, M.
Kiesling, C.
van der Kolk, N.
Seidel, K.
Simon, F.
Soldner, C.
Szalay, M.
Tesar, M.
Weuste, L.
Amjad, M. S.
Bonis, J.
Cornebise, P.
Richard, F.
Poeschl, R.
Rouene, J.
Thiebault, A.
Anduze, M.
Balagura, V.
Boudry, V.
Brient, J-C.
Cizel, J-B.
Cornat, R.
Frotin, M.
Gastaldi, F.
Haddad, Y.
Magniette, F.
Nanni, J.
Pavy, S.
Rubio-Roy, M.
Shpak, K.
Tran, T. H.
Videau, H.
Yu, D.
Callier, S.
di Lorenzo, S. Conforti
Dulucq, F.
Fleury, J.
Martin-Chassard, G.
de la Taille, Ch.
Raux, L.
Seguin-Moreau, N.
Cvach, J.
Gallus, P.
Havranek, M.
Janata, M.
Kovalcuk, M.
Kvasnicka, J.
Lednicky, D.
Marcisovsky, M.
Polak, I.
Popule, J.
Tomasek, L.
Tomasek, M.
Ruzicka, P.
Sicho, P.
Smolik, J.
Vrba, V.
Zalesak, J.
Ieki, S.
Kamiya, Y.
Ootani, W.
Shibata, N.
Chen, S.
Jeans, D.
Komamiya, S.
Kozakai, C.
Nakanishi, H.
Goetze, M.
Sauer, J.
Weber, S.
Zeitnitz, C.
CA CALICE Collaboration
TI Shower development of particles with momenta from 15 GeV to 150GeV in
the CALICE scintillator-tungsten hadronic calorimeter
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
DE Calorimeter methods; Detector modelling and simulations I (interaction
of radiation with matter, interaction of hotons with matter, interaction
of hadrons with matter, etc); Particle identification methods
AB We present a study of showers initiated by electrons, pions, kaons, and protons with momenta from 15 GeV to 150 GeV in the highly granular CALICE scintillator-tungsten analogue hadronic calorimeter. The data were recorded at the CERN Super Proton Synchrotron in 2011. The analysis includes measurements of the calorimeter response to each particle type as well as measurements of the energy resolution and studies of the longitudinal and radial shower development for selected particles. The results are compared to Geant4 simulations (version 9.6.p02). In the study of the energy resolution we include previously published data with beam momenta from 1 GeV to 10 GeV recorded at the CERN Proton Synchrotron in 2010.
C1 [Chefdeville, M.; Karyotakis, Y.] Univ Savoie, CNRS, IN2P3, Lab Annecy le Vieux Phys Particules, 9 Chemin Bellevue,BP110, F-74941 Annecy Le Vieux, France.
[Repond, J.; Schlereth, J.; Xia, L.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Eigen, G.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Marshall, J. S.; Thomson, M. A.; Ward, D. R.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Tehrani, N. Alipour; Apostolakis, J.; Dannheim, D.; Elsener, K.; Folger, G.; Grefe, C.; Ivantchenko, V.; Killenberg, M.; Klempt, W.; van der Kraaij, E.; Linssen, L.; Lucaci-Timoce, A. -I.; Muennich, A.; Poss, S.; Ribon, A.; Roloff, P.; Sailer, A.; Schlatter, D.; Sicking, E.; Strube, J.; Uzhinskiy, V.] CERN, CH-1211 Geneva 23, Switzerland.
[Chang, S.; Khan, A.; Kim, D. H.; Kong, D. J.; Oh, Y. D.] Kyungpook Natl Univ, Dept Phys, Daegu 702701, South Korea.
[Blazey, G. C.; Dyshkant, A.; Francis, K.; Zutshi, V.] No Illinois Univ, Dept Phys, NICADD, De Kalb, IL 60115 USA.
[Giraud, J.; Grondin, D.; Hostachy, J. -Y.] Univ Grenoble Alpes, CNRS, IN2P3, Lab Phys Subatom & Cosmol, Grenoble, France.
[Brianne, E.; Cornett, U.; David, D.; Falley, G.; Gadow, K.; Goettlicher, P.; Guenter, C.; Hartbrich, O.; Hermberg, B.; Irles, A.; Karstensen, S.; Krivan, F.; Krueger, K.; Kvasnicka, J.; Lu, S.; Lutz, B.; Morozov, S.; Morgunov, V.; Neubueser, C.; Provenza, A.; Reinecke, M.; Sefkow, F.; Smirnov, P.; Terwort, M.; Tran, H. L.; Vargas-Trevino, A.] DESY, Notkestr 85, D-22603 Hamburg, Germany.
[Garutti, E.; Laurien, S.; Matysek, M.; Ramilli, M.; Schroeder, S.] Univ Hamburg, Dept Phys, Inst Expt Phys, D-22761 Hamburg, Germany.
[Briggl, K.; Eckert, P.; Harion, T.; Munwes, Y.; Schultz-Coulon, H. -Ch.; Shen, W.; Stamen, R.] Heidelberg Univ, Fak Phys & Astron, D-69120 Heidelberg, Germany.
[Bilki, B.; Onel, Y.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
[Kawagoe, K.; Hirai, H.; Sudo, Y.; Suehara, T.; Sumida, H.; Takada, S.; Tomita, T.; Yoshioka, T.] Kyushu Univ, Dept Phys, Fukuoka 8128581, Japan.
[Wing, M.] UCL, Dept Phys & Astron, London WC1E 6BT, England.
[Alamillo, E. Calvo; Fouz, M. -C.; Marin, J.; Puerta-Pelayo, J.; Verdugo, A.] CIEMAT, Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain.
[Bobchenko, B.; Chadeeva, M.; Danilov, M.; Markin, O.; Mizuk, R.; Novikov, E.; Rusinov, V.; Tarkovsky, E.] Inst Theoret & Expt Phys, RU-117218 Moscow, Russia.
[Kirikova, N.; Kozlov, V.; Smirnov, P.; Soloviev, Y.] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 117924, Russia.
[Besson, D.; Buzhan, P.; Popova, E.] Natl Res Nucl Univ, MEPhI Moscow Engn Phys Inst, Moscow 115409, Russia.
[Gabriel, M.; Kiesling, C.; van der Kolk, N.; Seidel, K.; Simon, F.; Soldner, C.; Szalay, M.; Tesar, M.; Weuste, L.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Amjad, M. S.; Bonis, J.; Cornebise, P.; Richard, F.; Poeschl, R.; Rouene, J.; Thiebault, A.] Univ Paris 11, Ctr Orsay, Lab Accelerateur Lineaire, F-91898 Orsay, France.
[Anduze, M.; Balagura, V.; Boudry, V.; Brient, J-C.; Cizel, J-B.; Cornat, R.; Frotin, M.; Gastaldi, F.; Haddad, Y.; Magniette, F.; Nanni, J.; Pavy, S.; Rubio-Roy, M.; Shpak, K.; Tran, T. H.; Videau, H.; Yu, D.] Ecole Polytech, CNRS, IN2P3, LLR, F-91128 Palaiseau, France.
[Callier, S.; di Lorenzo, S. Conforti; Dulucq, F.; Fleury, J.; Martin-Chassard, G.; de la Taille, Ch.; Raux, L.; Seguin-Moreau, N.] Ecole Polytech, CNRS, IN2P3, OMEGA Microelect, F-91128 Palaiseau, France.
[Cvach, J.; Gallus, P.; Havranek, M.; Janata, M.; Kovalcuk, M.; Kvasnicka, J.; Lednicky, D.; Marcisovsky, M.; Polak, I.; Popule, J.; Tomasek, L.; Tomasek, M.; Ruzicka, P.; Sicho, P.; Smolik, J.; Vrba, V.; Zalesak, J.] Acad Sci Czech Republic, Inst Phys, CZ-18221 Prague 8, Czech Republic.
[Ieki, S.; Kamiya, Y.; Ootani, W.; Shibata, N.] Univ Tokyo, ICEPP, Bunkyo Ku, Tokyo 1130033, Japan.
[Chen, S.; Jeans, D.; Komamiya, S.; Kozakai, C.; Nakanishi, H.] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan.
[Goetze, M.; Sauer, J.; Weber, S.; Zeitnitz, C.] Berg Univ Wuppertal, Fachbereich Phys 8, D-42097 Wuppertal, Germany.
[Kvasnicka, J.] IPASCR Prague, Prague, Czech Republic.
[Morgunov, V.] ITEP, Moscow, Russia.
[Bobchenko, B.; Chadeeva, M.; Danilov, M.; Markin, O.; Mizuk, R.; Rusinov, V.; Tarkovsky, E.] NRNU MEPhI, Moscow, Russia.
[Komamiya, S.] Univ Tokyo, ICEPP, Tokyo 1138654, Japan.
RP Sicking, E (reprint author), CERN, CH-1211 Geneva 23, Switzerland.
EM eva.sicking@cern.ch
RI U-ID, Kyushu/C-5291-2016; Danilov, Mikhail/C-5380-2014; Mizuk,
Roman/B-3751-2014; Calvo Alamillo, Enrique/L-1203-2014; Verdugo de Osa,
Antonio/F-7790-2016; Kirikova, Nataliia/N-1710-2015; Kozlov,
Valentin/M-8000-2015; Soloviev, Yury/M-8788-2015; Kamiya,
Yoshio/L-4394-2014; Cvach, Jaroslav/G-6269-2014; Chadeeva,
Marina/C-8789-2016; van der Kolk, Naomi/M-9423-2016
OI Danilov, Mikhail/0000-0001-9227-5164; Calvo Alamillo,
Enrique/0000-0002-1100-2963; Verdugo de Osa,
Antonio/0000-0003-3619-9675; Soloviev, Yury/0000-0003-1136-2827; Kamiya,
Yoshio/0000-0001-8716-2536; Chadeeva, Marina/0000-0003-1814-1218; van
der Kolk, Naomi/0000-0002-8670-0408
FU European Commission [262025]; Bundesministerium fur Bildung und
Forschung, Germany; DFG cluster of excellence 'Origin and Structure of
the Universe' of Germany; Helmholtz-Nachwuchsgruppen [VH-NG-206]; BMBF
[05HS6VH1]; Alexander von Humboldt Foundation [RUS1066839 GSA]; Russian
Ministry of Education and Science [4465.2014.2, 14.A12.31.0006]; Russian
Foundation for Basic Research [14-02-00873A]; MICINN, Spain; CPAN,
Spain; CRI(MST) of MOST/KOSEF in Korea; US Department of Energy; US
National Science Foundation; Ministry of Education, Youth and Sports of
the Czech Republic [AV0 Z3407391, AV0 Z10100502, LG14033, LA09042];
Science and Technology Facilities Council, UK
FX We gratefully acknowledge the DESY and CERN managements for their
support and hospitality, and their accelerator staff for the reliable
and efficient beam operation. The authors would like to thank the RIMST
(Zelenograd) group for their help and sensors manufacturing. This work
was supported by the European Commission under the FP7 Research
Infrastructures project AIDA, grant agreement no. 262025; by the
Bundesministerium fur Bildung und Forschung, Germany; by the DFG cluster
of excellence 'Origin and Structure of the Universe' of Germany; by the
Helmholtz-Nachwuchsgruppen grant VH-NG-206; by the BMBF, grant no.
05HS6VH1; by the Alexander von Humboldt Foundation (including Research
Award IV, RUS1066839 GSA); by the Russian Ministry of Education and
Science contracts 4465.2014.2 and 14.A12.31.0006 and the Russian
Foundation for Basic Research grant 14-02-00873A; by MICINN and CPAN,
Spain; by CRI(MST) of MOST/KOSEF in Korea; by the US Department of
Energy and the US National Science Foundation; by the Ministry of
Education, Youth and Sports of the Czech Republic under the projects AV0
Z3407391, AV0 Z10100502, LG14033 and LA09042; and by the Science and
Technology Facilities Council, UK.
NR 21
TC 0
Z9 0
U1 2
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD DEC
PY 2015
VL 10
AR P12006
DI 10.1088/1748-0221/10/12/P12006
PG 34
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA DD5XP
UT WOS:000369998500039
ER
PT J
AU Dhar, A
Loach, JC
Barton, PJ
Larsen, JT
Poon, AWP
AF Dhar, A.
Loach, J. C.
Barton, P. J.
Larsen, J. T.
Poon, A. W. P.
TI Low-background temperature sensors fabricated on parylene substrates
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
DE Double-beta decay detectors; Dark Matter detectors (WIMPs, axions,
etc.); Cryogenic detectors; Special cables
AB Temperature sensors fabricated from ultra-low radioactivity materials have been developed for low-background experiments searching for neutrinoless double-beta decay and the interactions of WIMP dark matter. The sensors consist of electrical traces photolithographically-patterned onto substrates of vapor-deposited parylene. They are demonstrated to function as expected, to do so reliably and robustly, and to be highly radio-pure. This work is a proof-of-concept study of a technology that can be applied to broad class of electronic circuits used in low-background experiments.
C1 [Dhar, A.; Loach, J. C.; Barton, P. J.; Poon, A. W. P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
[Dhar, A.; Loach, J. C.; Barton, P. J.; Poon, A. W. P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA.
[Loach, J. C.] Shanghai Jiao Tong Univ, INPAC, Shanghai 200240, Peoples R China.
[Loach, J. C.] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China.
[Larsen, J. T.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Loach, JC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM james.loach@sjtu.edu.cn
RI Dhar, Ankur/B-7177-2015
OI Dhar, Ankur/0000-0001-8988-1358
FU U.S. Department of Energy, Office of Science, Office of Nuclear Physics
[DE-AC02-05CH11231]; Shanghai Key Lab for Particle Physics and Cosmology
(SKLPPC) [15DZ2272100]
FX This work was supported by the U.S. Department of Energy, Office of
Science, Office of Nuclear Physics, under Contract No. DE-AC02-05CH11231
and by the Shanghai Key Lab for Particle Physics and Cosmology (SKLPPC),
Grant No. 15DZ2272100.
NR 7
TC 1
Z9 1
U1 1
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD DEC
PY 2015
VL 10
AR P12002
DI 10.1088/1748-0221/10/12/P12002
PG 11
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA DD5XP
UT WOS:000369998500035
ER
PT J
AU Galib, S
Islam, F
Abir, M
Lee, HK
AF Galib, S.
Islam, F.
Abir, M.
Lee, H. K.
TI Computer aided detection of oral lesions on CT images
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article; Proceedings Paper
CT International Workshop on Imaging
CY SEP 07-10, 2015
CL Varenna, ITALY
DE Medical-image reconstruction methods and algorithms; computer-aided
diagnosis; Medical-image reconstruction methods and algorithms;
computer-aided software; Computerized Tomography (CT) and Computed
Radiography (CR)
ID CARIES; RADIOGRAPHS; DIAGNOSIS
AB Oral lesions are important findings on computed tomography (CT) images. In this study, a fully automatic method to detect oral lesions in mandibular region from dental CT images is proposed. Two methodswere developed to recognize two types of lesions namely (1) Close border (CB) lesions and (2) Open border (OB) lesions, which cover most of the lesion types that can be found on CT images. For the detection of CB lesions, fifteen featureswere extracted from each initial lesion candidates and multi layer perceptron (MLP) neural network was used to classify suspicious regions. Moreover, OB lesions were detected using a rule based image processing method, where no feature extraction or classification algorithm were used. The results were validated using a CT dataset of 52 patients, where 22 patients had abnormalities and 30 patients were normal. Using non-training dataset, CB detection algorithm yielded 71% sensitivity with 0.31 false positives per patient. Furthermore, OB detection algorithm achieved 100% sensitivity with 0.13 false positives per patient. Results suggest that, the proposed framework, which consists of two methods, has the potential to be used in clinical context, and assist radiologists for better diagnosis.
C1 [Galib, S.; Islam, F.; Lee, H. K.] Missouri Univ Sci & Technol, Dept Min & Nucl Engn, 301 W 14th St, Rolla, MO 65409 USA.
[Abir, M.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Lee, HK (reprint author), Missouri Univ Sci & Technol, Dept Min & Nucl Engn, 301 W 14th St, Rolla, MO 65409 USA.
EM leehk@mst.edu
NR 15
TC 0
Z9 0
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD DEC
PY 2015
VL 10
AR C12030
DI 10.1088/1748-0221/10/12/C12030
PG 13
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA DD5XP
UT WOS:000369998500030
ER
PT J
AU Krohn, M
Bentele, B
Christian, DC
Cumalat, JP
Deptuch, G
Fahim, F
Hoff, J
Shenai, A
Wagner, SR
AF Krohn, M.
Bentele, B.
Christian, D. C.
Cumalat, J. P.
Deptuch, G.
Fahim, F.
Hoff, J.
Shenai, A.
Wagner, S. R.
TI Radiation tolerance of 65 nm CMOS transistors
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article
DE Radiation-hard electronics; Front-end electronics for detector readout
AB We report on the effects of ionizing radiation on 65 nm CMOS transistors held at approximately -20 degrees C during irradiation. The pattern of damage observed after a total dose of 1 Grad is similar to damage reported in room temperature exposures, but we observe less damage than was observed at room temperature.
C1 [Krohn, M.; Bentele, B.; Cumalat, J. P.; Wagner, S. R.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
[Christian, D. C.; Deptuch, G.; Fahim, F.; Hoff, J.; Shenai, A.] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
RP Christian, DC (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM dcc@fnal.gov
FU Department of Energy [DE-SC0006963]; United States Department of Energy
[DE-AC02-07CH11359]
FX We wish to thank Charles Bowen of the University of Colorado Department
of Physics Precision Machine Shop, Nina Moibenko of Fermilab's
Electrical Engineering Department, and Donald Hanson, Maryla Wasiolek,
and Nathan Hart of the Sandia National Laboratories Gamma Irradiation
Facility. This work was supported in part by Department of Energy grant
(DE-SC0006963). Fermilab is operated by Fermi Research Alliance, LLC
under Contract No. DE-AC02-07CH11359 with the United States Department
of Energy.
NR 8
TC 1
Z9 1
U1 1
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD DEC
PY 2015
VL 10
AR P12007
DI 10.1088/1748-0221/10/12/P12007
PG 14
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA DD5XP
UT WOS:000369998500040
ER
PT J
AU Wang, ZH
AF Wang, Zhehui
TI On the Single-Photon-Counting (SPC) modes of imaging using an XFEL
source
SO JOURNAL OF INSTRUMENTATION
LA English
DT Article; Proceedings Paper
CT 17th International Workshop on Radiation Imaging Detectors
CY JUN 28-JUL 02, 2015
CL DESY, Hamburg, GERMANY
HO DESY
DE X-ray detectors; Hybrid detectors
ID X-RAY-DIFFRACTION; DETECTORS; TIME; 3D
AB The requirements to achieve high detection efficiency (above 50%) and gigahertz (GHz) frame rate for the proposed 42-keVX-ray free-electron laser (XFEL) at Los Alamos are summarized. Direct detection scenarios using C (diamond), Si, Ge and GaAs semiconductor sensors are analyzed. Single-photon counting (SPC) mode andweak SPC mode using Si can potentially meet the efficiency and frame rate requirements and be useful to both photoelectric absorption and Compton physics as the photon energy increases. Multilayer three-dimensional (3D) detector architecture, as a possible means to realize SPC modes, is compared with the widely used two-dimensional (2D) hybrid planar electrode structure and 3D deeply entrenched electrode architecture. Demonstration of thin film cameras less than 100-mu m thick with onboard thin ASICs could be an initial step to realize multilayer 3D detectors and SPC modes for XFELs.
C1 [Wang, Zhehui] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RP Wang, ZH (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM zwang@lanl.gov
NR 29
TC 1
Z9 1
U1 1
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-0221
J9 J INSTRUM
JI J. Instrum.
PD DEC
PY 2015
VL 10
AR C12013
DI 10.1088/1748-0221/10/12/C12013
PG 11
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA DD5XP
UT WOS:000369998500013
ER
PT J
AU Roberto, JB
Alexander, CW
Boll, RA
Burns, JD
Ezold, JG
Felker, LK
Hogle, SL
Rykaczewski, KP
AF Roberto, J. B.
Alexander, C. W.
Boll, R. A.
Burns, J. D.
Ezold, J. G.
Felker, L. K.
Hogle, S. L.
Rykaczewski, K. P.
TI Actinide targets for the synthesis of super-heavy elements
SO NUCLEAR PHYSICS A
LA English
DT Article
DE Actinide; Actinide target; Super-heavy element; Berkelium; Californium;
Einsteinium
ID DEPOSITION; IDENTIFICATION; SEPARATION; GRAPHENE; ISOTOPE; TASCA; WHEEL;
DECAY
AB Since 2000, six new super-heavy elements with atomic numbers 1 1 3 through 118 have been synthesized in hot fusion reactions of Ca-48 beams on actinide targets. These target materials, including Pu-242 Pu-244, Am-243, Cm-245, Cm-248, Cf-249, and Bk-249, are available in very limited quantities and require specialized production and processing facilities resident in only a few research centers worldwide. This report describes the production and chemical processing of heavy actinide materials for super-heavy element research, current availabilities of these materials, and related target fabrication techniques. The impact of actinide materials in super -heavy element discovery is reviewed, and strategies for enhancing the production of rare actinides including Bk-249, Cf-251, and Es-254 are described. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Roberto, J. B.; Alexander, C. W.; Boll, R. A.; Burns, J. D.; Ezold, J. G.; Felker, L. K.; Hogle, S. L.; Rykaczewski, K. P.] Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
RP Roberto, JB (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM robertojb@oml.gov
RI Burns, Jonathan/O-2028-2015; Boll, Rose/C-4138-2016
OI Burns, Jonathan/0000-0003-0301-9607; Roberto, James/0000-0002-4234-0252;
Ezold, Julie/0000-0002-5055-0022; Boll, Rose/0000-0003-2507-4834
FU U.S. Department of Energy, Office of Science, Office of Nuclear Physics,
Isotope Development and Production for Research and Applications Program
[DE-AC05-00OR22725]; UT Battelle, LLC
FX This material is based upon work supported by the U.S. Department of
Energy, Office of Science, Office of Nuclear Physics, Isotope
Development and Production for Research and Applications Program, under
contract DE-AC05-00OR22725 with UT Battelle, LLC. We are grateful to the
staffs of the ORNL Radiochemical Engineering Development Center and the
ORNL High Flux Isotope Reactor, a DOE Office of Science, Office of Basic
Energy Sciences User Facility, for their support in the production and
chemical separation of actinide materials. We also thank our many
collaborators at the Flerov Laboratory of Nuclear Reactions (JINR,
Dubna, Russia), GSI (Darmstadt, Germany), University of Mainz (Mainz,
Germany), Lawrence Livermore National Laboratory, Vanderbilt University,
and the University of Tennessee-Knoxville, without whom this research
would not have been possible.
NR 74
TC 7
Z9 7
U1 2
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
EI 1873-1554
J9 NUCL PHYS A
JI Nucl. Phys. A
PD DEC
PY 2015
VL 944
BP 99
EP 116
DI 10.1016/j.nuclphysa.2015.06.009
PG 18
WC Physics, Nuclear
SC Physics
GA DD2SY
UT WOS:000369773700006
ER
PT J
AU Kratz, JV
Loveland, W
Moody, KJ
AF Kratz, J. V.
Loveland, W.
Moody, K. J.
TI Syntheses of transuranium isotopes with atomic numbers Z <= 103 in
multi-nucleon transfer reactions
SO NUCLEAR PHYSICS A
LA English
DT Article
DE Quasi-elastic and complex transfer reactions; Multi-nucleon transfer
reactions with the heaviest projectiles; Energy dissipation; Survival
probabilities against fission; Theoretical predictions; Experimental
challenges
ID HEAVY-ION COLLISIONS; EXCITATION-ENERGY DIVISION; MASS-YIELD
DISTRIBUTIONS; 2-NUCLEON TRANSFER-REACTIONS; TRANSFER CROSS-SECTIONS;
VELOCITY FILTER SHIP; ACTINIDE PRODUCTION; NEUTRON TRANSFER; SUPERHEAVY
ELEMENTS; COULOMB BARRIER
AB In Section I we will discuss multi-nucleon transfer reactions with light heavy ions, which can be thought of as competing with complete fusion at higher impact parameters. Quasi-elastic and multi-nucleon transfer reactions with the heaviest projectiles will be discussed in Section 2. In Section 3 we will cover recent developments focusing on theoretical predictions of cross sections of superheavy nuclei, cover some new possibilities and look into the existing experimental challenges. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Kratz, J. V.] Johannes Gutenberg Univ Mainz, Inst Nucl Chem, D-55128 Mainz, Germany.
[Loveland, W.] Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA.
[Moody, K. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Kratz, JV (reprint author), Johannes Gutenberg Univ Mainz, Inst Nucl Chem, D-55128 Mainz, Germany.
EM jvkratz@uni-mainz.de
NR 127
TC 0
Z9 0
U1 2
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
EI 1873-1554
J9 NUCL PHYS A
JI Nucl. Phys. A
PD DEC
PY 2015
VL 944
BP 117
EP 157
DI 10.1016/j.nuclphysa.2015.06.004
PG 41
WC Physics, Nuclear
SC Physics
GA DD2SY
UT WOS:000369773700007
ER
PT J
AU Theisen, C
Greenlees, PT
Khoo, TL
Chowdhury, P
Ishii, T
AF Theisen, Ch.
Greenlees, P. T.
Khoo, T. -L.
Chowdhury, P.
Ishii, T.
TI In-beam spectroscopy of heavy elements
SO NUCLEAR PHYSICS A
LA English
DT Article
DE In-beam spectroscopy; Heavy elements; Superheavy elements; Nuclear
structure; Isomeric states
ID FILLED RECOIL SEPARATOR; GAMMA-RAY SPECTROSCOPY; SINGLE-PARTICLE STATES;
ALPHA-DECAY PROPERTIES; SUPERDEFORMED NUCLEI; EINSTEINIUM ISOTOPES;
SUPERHEAVY NUCLEI; ROTATIONAL BANDS; MASS ANALYZER; MEAN-FIELD
AB Traditionally the experimental study of heavy and superheavy elements has belonged to the realm of decay spectroscopy and nuclear reactions. Only in the past twenty years or so has it become feasible to study nuclei with Z = 96 and beyond with in-beam spectroscopic techniques. Since the pioneering studies in the late 1990s, development of both instrumentation and experimental techniques has resulted in a significant lowering of the spectroscopic limit for in-beam measurements. Such measurements give access to a wide range of nuclear structure observables which in general are beyond the reach of other techniques. The current review aims to present the most recent developments and results in the field, building upon previous reviews with a similar theme. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Theisen, Ch.] CEA, Ctr Saclay, IRFU Serv Phys Nucl, F-91191 Gif Sur Yvette, France.
[Greenlees, P. T.] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland.
[Khoo, T. -L.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Chowdhury, P.] Univ Massachusetts, Lowell, MA 01854 USA.
[Ishii, T.] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan.
RP Theisen, C (reprint author), CEA, Ctr Saclay, IRFU Serv Phys Nucl, F-91191 Gif Sur Yvette, France.
EM christophe.theisen@cea.fr
RI THEISEN, Christophe/A-9343-2015
OI THEISEN, Christophe/0000-0002-8509-1022
FU U.S. Department of Energy, Office of Science, Office of Nuclear Physics
[DE-FG02-94ER40848, DE-AC02-06CH11357]
FX Some of this material is based upon work supported by the U.S.
Department of Energy, Office of Science, Office of Nuclear Physics,
under award numbers DE-FG02-94ER40848 and contract number
DE-AC02-06CH11357. Some of this research used resources of ANL's ATLAS
facility, which is a DOE Office of Science user facility. We are
grateful to R. Briselet for providing new data prior to publication.
NR 172
TC 5
Z9 5
U1 2
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
EI 1873-1554
J9 NUCL PHYS A
JI Nucl. Phys. A
PD DEC
PY 2015
VL 944
BP 333
EP 375
DI 10.1016/j.nuclphysa.2015.07.014
PG 43
WC Physics, Nuclear
SC Physics
GA DD2SY
UT WOS:000369773700015
ER
PT J
AU Cao, GQ
He, LY
AF Cao Gao-Qing
He Lian-Yi
TI Ginzburg-Landau Free Energy of Crystalline Color Superconductors: A
Matrix Formalism from Solid-State Physics
SO COMMUNICATIONS IN THEORETICAL PHYSICS
LA English
DT Article
DE color superconductors; LOFF pairing; Ginzburg Landau free energy
ID LARKIN-OVCHINNIKOV PHASES; DENSE QUARK MATTER; CRITICAL FIELD; QCD;
TRANSITION; SEPARATION
AB The Ginzburg Landau (GL) free energy of crystalline color superconductors is important for understanding the nature of the phase transition to the normal quark matter and predicting the preferred crystal structure. So far the GL free energy at zero temperature has only been evaluated up to the sixth order in the condensate. To give quantitative reliable predictions we need to evaluate the higher -order terms. In this work, we present a new derivation of the GL free energy by using the discrete Bloch representation of the fermion field. This derivation introduces a simple matrix formalism without any momentum constraint, which may enable us to calculate the GL free energy to arbitrary order by using a computer.
C1 [Cao Gao-Qing] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
[Cao Gao-Qing] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China.
[He Lian-Yi] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Cao, GQ (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
EM lianyi@lanl.gov
RI He, Lianyi/G-5110-2010
OI He, Lianyi/0000-0002-9965-0446
FU National Natural Science Foundation of China [11335005]; Ministry of
Science and Technology [2013CB922000, 2014CB845400]; US Department of
Energy Topical Collaboration "Neutrinos and Nucleosynthesis in Hot and
Dense Matter"
FX Supported by the National Natural Science Foundation of China under
Grant No. 11335005 and the Ministry of Science and Technology under
Grant Nos. 2013CB922000 and 2014CB845400, and by the US Department of
Energy Topical Collaboration "Neutrinos and Nucleosynthesis in Hot and
Dense Matter"
NR 47
TC 0
Z9 0
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0253-6102
EI 1572-9494
J9 COMMUN THEOR PHYS
JI Commun. Theor. Phys.
PD DEC 1
PY 2015
VL 64
IS 6
BP 687
EP 696
PG 10
WC Physics, Multidisciplinary
SC Physics
GA DC7VG
UT WOS:000369428000014
ER
PT J
AU Kundu, J
Stilck, JF
Rajesh, R
AF Kundu, Joyjit
Stilck, Juergen F.
Rajesh, R.
TI Phase diagram of a bidispersed hard-rod lattice gas in two dimensions
SO EPL
LA English
DT Article
ID NEMATIC PHASE; RODLIKE PARTICLES; LIQUID-CRYSTALS; LONG RODS;
TRANSITIONS; SYSTEMS; POLYDISPERSITY; EQUILIBRIA; SEPARATION; BEHAVIOR
AB We obtain, using extensive Monte Carlo simulations, virial expansion and a high-density perturbation expansion about the fully packed monodispersed phase, the phase diagram of a system of bidispersed hard rods on a square lattice. We show numerically that when the length of the longer rods is 7, two continuous transitions may exist as the density of the longer rods is increased, keeping the density of shorter rods fixed: first from a low-density isotropic phase to a nematic phase, and second from the nematic to a high-density isotropic phase. The difference between the critical densities of the two transitions decreases to zero at a critical density of the shorter rods so that the fully packed phase is disordered for any composition. When both the rod lengths are larger than 6, we observe the existence of two transitions along the fully packed line as the composition is varied. Low-density virial expansion, truncated at the second virial coefficient, reproduces features of the first transition. By developing a high-density perturbation expansion, we show that when one of the rods is long enough, there will be at least two isotropic-nematic transitions along the fully packed line as the composition is varied. Copyright (C) EPLA, 2015
C1 [Kundu, Joyjit] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
[Stilck, Juergen F.] Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ, Brazil.
[Stilck, Juergen F.] Univ Fed Fluminense, Natl Inst Sci & Technol Complex Syst, BR-24210346 Niteroi, RJ, Brazil.
[Rajesh, R.] Inst Math Sci, Madras 600113, Tamil Nadu, India.
RP Kundu, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
RI Stilck, Jurgen/F-2376-2014
OI Stilck, Jurgen/0000-0002-3204-1953
NR 52
TC 1
Z9 1
U1 0
U2 3
PU EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
PI MULHOUSE
PA 6 RUE DES FRERES LUMIERE, MULHOUSE, 68200, FRANCE
SN 0295-5075
EI 1286-4854
J9 EPL-EUROPHYS LETT
JI EPL
PD DEC
PY 2015
VL 112
IS 6
AR 66002
DI 10.1209/0295-5075/112/66002
PG 6
WC Physics, Multidisciplinary
SC Physics
GA DC6BL
UT WOS:000369304600016
ER
PT J
AU Quinn, DP
Kaylor, SM
Norton, TM
Buhlmann, KA
AF Quinn, Daniel P.
Kaylor, S. Michelle
Norton, Terry M.
Buhlmann, Kurt A.
TI NESTING MOUNDS WITH PROTECTIVE BOXES AND AN ELECTRIC WIRE AS TOOLS TO
MITIGATE DIAMOND-BACKED TERRAPIN (MALACLEMYS TERRAPIN) NEST PREDATION
SO HERPETOLOGICAL CONSERVATION AND BIOLOGY
LA English
DT Article
DE nest box; nest excavation; nest mound; Procyon lotor; Raccoon
ID TURTLE CONSERVATION; PROCYON-LOTOR; MORTALITY; FLORIDA; MANAGEMENT;
CULVERTS; RACCOONS; HIGHWAY
AB Diamond-backed Terrapin (Malaclemys terrapin) nests are susceptible to predation by a variety of mesopredators, predominately Raccoons (Procyon lotor). The Downing-Musgrove Causeway (DMC) leading to Jekyll Island, Georgia, USA, is a hot spot for nesting Diamond-backed Terrapins with road mortality and nest predation driving population declines. We designed and constructed artificial nest mounds with protective nest boxes to intercept female terrapins prior to accessing the causeway while simultaneously providing nest security from predators. Initial data indicated that terrapins nested on constructed nest mounds, but that predators were accessing nests within the boxes. In 2013, we used a battery and solar panel to electrify antipredator wiring that was placed along the entrances of connected nest boxes. We used time-lapse photography from wildlife cameras to document nesting terrapins and to estimate nest predation rates. We compared nest predation rates of electrified nest boxes to those without. Only one nest out of 27 was depredated in boxes with an electric wire. Conversely, 100% of known nests were depredated when no electric wire was present. We excavated nest boxes in autumn and/or spring and found high rates of egg survivorship and hatching success. The results of this study suggest that artificial nesting mounds can be used to promote recruitment of terrapins by protecting nests at local hotspots so long as proper defenses are in place.
C1 [Quinn, Daniel P.; Kaylor, S. Michelle; Norton, Terry M.] Jekyll Isl Author, Georgia Sea Turtle Ctr, 214 Stable Rd, Jekyll Isl, GA 31527 USA.
[Quinn, Daniel P.; Buhlmann, Kurt A.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29808 USA.
RP Quinn, DP (reprint author), Jekyll Isl Author, Georgia Sea Turtle Ctr, 214 Stable Rd, Jekyll Isl, GA 31527 USA.
EM dpq695@srel.uga.edu
FU Department of Energy (DOE) [DE-FC09-07SR22506]
FX We would like to thank the Jekyll Island Authority (JIA) for their
support to conduct all aspects of this research; especially Cliff Gawron
of the JIA for enabling construction of mounds and boxes. We thank Pete
Wilson for providing insight on electric wire design, Brian Crawford for
help in data collection, Kimberly Andrews, Ben Carswell, Tracey
Tuberville, and the JIA for providing field equipment. We also thank the
Georgia Sea Turtle Center staff and AmeriCorps Members, especially Simon
Diltz, Lisa Rodriguez, and Anthony Gillis. Brian Crawford, Andrew
Grosse, Robert Horan, and John Maerz helped build nest mounds and nest
boxes. Rod Kennett, Ilse Keissling, Chris Buhlmann, Lance Paden, and
Anthony Gillis helped excavate boxes to determine hatching success.
Staff and volunteers of the Georgia Sea Turtle Center provided
additional support throughout the study. All methods were conducted in
accordance with the recommendations for humane treatment of these
animals for research and have been approved by the University of Georgia
Institution Animal Care and Use Committee (Animal Use Protocol no.:
A2012 05-002-Y1-A0, expired 23 May 2015). Manuscript preparation was
partially supported by Department of Energy (DOE) Award Number
DE-FC09-07SR22506 to the University of Georgia's Savannah River Ecology
Laboratory.
NR 33
TC 0
Z9 0
U1 2
U2 8
PU HERPETOLOGICAL CONSERVATION & BIOLOGY
PI CORVALLIS
PA C/O R BRUCE BURY, USGS FOREST & RANGELAND, CORVALLIS, OR 00000 USA
SN 2151-0733
EI 1931-7603
J9 HERPETOL CONSERV BIO
JI Herpetol. Conserv. Biol.
PD DEC
PY 2015
VL 10
IS 3
BP 969
EP 977
PG 9
WC Zoology
SC Zoology
GA DC8YD
UT WOS:000369505400017
ER
PT J
AU Hutton, F
Spink, JH
Griffin, D
Kildea, S
Bonner, D
Doherty, G
Hunter, A
AF Hutton, F.
Spink, J. H.
Griffin, D.
Kildea, S.
Bonner, D.
Doherty, G.
Hunter, A.
TI Distribution and incidence of viruses in Irish seed potato crops
SO IRISH JOURNAL OF AGRICULTURAL AND FOOD RESEARCH
LA English
DT Article
DE potato seed; potato virus; seed certification scheme; DAS-ELISA; aphid
ID LINKED IMMUNOSORBENT-ASSAY; PLANT-VIRUSES; YN
AB Virus diseases are of key importance in potato production and in particular for the production of disease-free potato seed. However, there is little known about the frequency and distribution of potato virus diseases in Ireland. Despite a large number of samples being tested each year, the data has never been collated either within or across years. Information from ail known potato virus testing carried out in the years 2006-2012 by the Department of Agriculture Food and Marine was collated to give an indication of the distribution and incidence of potato virus in Ireland. It was found that there was significant variation between regions, varieties, years and seed classes. A definition of daily weather data suitable for aphid flight was developed. which accounted for a significant proportion of the variation in virus incidence between years. This use of weather data to predict virus risk could be developed to form the basis of an integrated pest management approach for aphid control in Irish potato crops.
C1 [Hutton, F.; Spink, J. H.; Griffin, D.; Kildea, S.] Teagasc, Crops Res Ctr, Oak Pk, Carlow, Ireland.
[Bonner, D.; Doherty, G.] Tops Potato Ctr, Dept Agr Food & Marine, Raphoe, Donegal, Ireland.
[Hunter, A.] Univ Coll Dublin, Sch Agr & Food Sci, Dublin 4, Ireland.
RP Hutton, F (reprint author), Teagasc, Crops Res Ctr, Oak Pk, Carlow, Ireland.
EM fiona.hutton@teagasc.ie
NR 35
TC 0
Z9 0
U1 1
U2 6
PU TEAGASC
PI CARLOW
PA OAK PARK, CARLOW 00000, IRELAND
SN 0791-6833
J9 IRISH J AGR FOOD RES
JI Irish J. Agr. Food Res.
PD DEC
PY 2015
VL 54
IS 2
BP 98
EP 106
DI 10.1515/ijafr-2015-0011
PG 9
WC Agriculture, Multidisciplinary; Food Science & Technology
SC Agriculture; Food Science & Technology
GA DC6VA
UT WOS:000369356500004
ER
PT J
AU Yu, J
Li, LY
Cao, JB
Yuan, ZG
Reeves, GD
Baker, DN
Blake, JB
Spence, H
AF Yu, J.
Li, L. Y.
Cao, J. B.
Yuan, Z. G.
Reeves, G. D.
Baker, D. N.
Blake, J. B.
Spence, H.
TI Multiple loss processes of relativistic electrons outside the heart of
outer radiation belt during a storm sudden commencement
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID WIND DYNAMIC PRESSURE; GEOMAGNETIC STORMS; ENERGETIC PARTICLE;
DIFFUSION-COEFFICIENTS; INNER MAGNETOSPHERE; MAGNETIC-FIELD; EMIC WAVES;
PRECIPITATION; ACCELERATION; SCATTERING
AB By examining the compression-induced changes in the electron phase space density and pitch angle distribution observed by two satellites of Van Allen Probes (RBSP-A/B), we find that the relativistic electrons (>2 MeV) outside the heart of outer radiation belt (L*>= 5) undergo multiple losses during a storm sudden commencement. The relativistic electron loss mainly occurs in the field-aligned direction (pitch angle alpha<30 degrees or >150 degrees), and the flux decay of the field-aligned electrons is independent of the spatial location variations of the two satellites. However, the relativistic electrons in the pitch angle range of 30 degrees-150 degrees increase (decrease) with the decreasing (increasing) geocentric distance (vertical bar Delta L vertical bar<0.25) of the RBSP-B (RBSP-A) location, and the electron fluxes in the quasi-perpendicular direction display energy-dispersive oscillations in the Pc5 period range (2-10 min). The relativistic electron loss is confirmed by the decrease of electron phase space density at high-L shell after the magnetospheric compressions, and their loss is associated with the intense plasmaspheric hiss, electromagnetic ion cyclotron (EMIC) waves, relativistic electron precipitation (observed by POES/NOAA satellites at 850 km), and magnetic field fluctuations in the Pc5 band. The intense EMIC waves and whistler mode hiss jointly cause the rapidly pitch angle scattering loss of the relativistic electrons within 10 h. Moreover, the Pc5 ULF waves also lead to the slowly outward radial diffusion of the relativistic electrons in the high-L region with a negative electron phase space density gradient.
C1 [Yu, J.; Li, L. Y.; Cao, J. B.] Beihang Univ, Sch Astronaut, Beijing 100191, Peoples R China.
[Yuan, Z. G.] Wuhan Univ, Sch Elect Informat, Wuhan 430072, Peoples R China.
[Reeves, G. D.] Los Alamos Natl Lab, Space Sci & Applicat Grp, Los Alamos, NM USA.
[Baker, D. N.] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
[Blake, J. B.] Aerosp Corp, Los Angeles, CA 90009 USA.
[Spence, H.] Univ New Hampshire, Inst Study Earth Oceans & Space, Durham, NH 03824 USA.
RP Li, LY (reprint author), Beihang Univ, Sch Astronaut, Beijing 100191, Peoples R China.
EM lyli_ssri@buaa.edu.cn
RI Reeves, Geoffrey/E-8101-2011
OI Reeves, Geoffrey/0000-0002-7985-8098
FU NSFC [41374165, 41431071]; JHU/APL under NASA [967399, NAS5-01072]
FX This work is supported by NSFC (41374165, 41431071). Work by the
RBSP-ECT team was supported by funding provided by the JHU/APL contract
967399 under NASA's Prime contract NAS5-01072. RBSP data are available
at the Web http://www.rbsp-ect.lanl.gov/data_pub/ and
https://emfisis.physics.uiowa.edu/. Solar wind and geomagnetic indices
(Pd and HSYM) and GOES13-14 data are available at
the Web http://cdaweb.gsfc.nasa.gov/sp_phys and
http://satdat.ngdc.noaa.gov/sem/goes/data/. NOAA-POES data are available
at the Web http://satdat.ngdc.noaa.gov/sem/poes/data. Geomagnetic field
data from CARISMA station are avaiable at the Web http://www.carisma.ca.
Authors thank the relevant staffs for all data used in this paper. We
also thank W. Liu for helpful discussion.
NR 53
TC 5
Z9 6
U1 2
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD DEC
PY 2015
VL 120
IS 12
BP 10275
EP 10288
DI 10.1002/2015JA021460
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA DC4GZ
UT WOS:000369180200011
ER
PT J
AU McGranaghan, R
Knipp, DJ
Matsuo, T
Godinez, H
Redmon, RJ
Solomon, SC
Morley, SK
AF McGranaghan, Ryan
Knipp, Delores J.
Matsuo, Tomoko
Godinez, Humberto
Redmon, Robert J.
Solomon, Stanley C.
Morley, Steven K.
TI Modes of high-latitude auroral conductance variability derived from DMSP
energetic electron precipitation observations: Empirical orthogonal
function analysis
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID FIELD-ALIGNED CURRENTS; IONOSPHERIC ELECTRODYNAMICS; MAGNETOSPHERIC
SUBSTORMS; IONIZATION RATES; CURRENT SYSTEMS; DOMINANT-MODES; E-REGION;
CONDUCTIVITY; SECTOR; FLUX
AB We provide the first ever characterization of the primary modes of ionospheric Hall and Pedersen conductance variability as empirical orthogonal functions (EOFs). These are derived from six satellite years of Defense Meteorological Satellite Program (DMSP) particle data acquired during the rise of solar cycles 22 and 24. The 60 million DMSP spectra were each processed through the Global Airlglow Model. Ours is the first large-scale analysis of ionospheric conductances completely free of assumption of the incident electron energy spectra. We show that the mean patterns and first four EOFs capture similar to 50.1 and 52.9% of the total Pedersen and Hall conductance variabilities, respectively. The mean patterns and first EOFs are consistent with typical diffuse auroral oval structures and quiet time strengthening/weakening of the mean pattern. The second and third EOFs show major disturbance features of magnetosphere-ionosphere (MI) interactions: geomagnetically induced auroral zone expansion in EOF2 and the auroral substorm current wedge in EOF3. The fourth EOFs suggest diminished conductance associated with ionospheric substorm recovery mode. We identify the most important modes of ionospheric conductance variability. Our results will allow improved modeling of the background error covariance needed for ionospheric assimilative procedures and improved understanding of MI coupling processes.
C1 [McGranaghan, Ryan; Knipp, Delores J.] Univ Colorado, Aerosp Engn Sci, Boulder, CO 80309 USA.
[Knipp, Delores J.; Solomon, Stanley C.] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA.
[Matsuo, Tomoko] Cooperat Inst Res Environm Sci, Boulder, CO USA.
[Matsuo, Tomoko] NOAA, Boulder, CO USA.
[Godinez, Humberto] Los Alamos Natl Lab, Appl Math & Plasma Phys T 5, Los Alamos, NM USA.
[Redmon, Robert J.] NOAA, Natl Geophys Data Ctr, Boulder, CO 80303 USA.
[Morley, Steven K.] Los Alamos Natl Lab, Space Sci & Applicat ISR 1, Los Alamos, NM USA.
RP McGranaghan, R (reprint author), Univ Colorado, Aerosp Engn Sci, Boulder, CO 80309 USA.
EM ryan.mcgranaghan@colorado.edu
RI Solomon, Stanley/J-4847-2012; Morley, Steven/A-8321-2008
OI Solomon, Stanley/0000-0002-5291-3034; Morley, Steven/0000-0001-8520-0199
FU NSF [DGE 1144083, AGS 1025089, AGS 1144154, PLR 1443703]; NASA
[NNX13AD64G, NNX14AI17G]; Vela Fellowship at the Los Alamos National
Labs Space Weather Summer School; National Center for Atmospheric
Research - National Science Foundation; [AFSORFA9550-12-1-0264]
FX R.M.G. was partially supported by NSF Fellowship award DGE 1144083, NSF
grant AGS 1025089, NASA grant NNX13AD64G, and the Vela Fellowship at the
Los Alamos National Labs Space Weather Summer School. D.J.K. was
partially supported by NSF grants AGS 1025089 and AGS 1144154,
AFSORFA9550-12-1-0264, and NASA grant NNX13AD64G. T.M. was in part
supported by NSF grants AGS 1025089 and PLR 1443703 and the NASA award
NNX14AI17G. S.C.S. was supported by the National Center for Atmospheric
Research, which is sponsored by the National Science Foundation. We
acknowledge use of NASA/GSFC's Space Physics Data Facility's OMNIWeb
service and NASA CDAWeb which provided the solar wind and DMSP 2010
data. The DMSP 1987 data can be accessed from
http://satdat.ngdc.noaa.gov/dmsp/data/. The GLOW model code is archived
on the NCAR High Performance Storage System and is available on request
from Stanley C. Solomon, stans@ucar.edu. NCAR is sponsored by the NSF.
The equal-area binning used in Figure 3 is performed via a routine
developed by Astrid Maute at the National Center for Atmospheric
Research High Altitude Observatory. We are grateful to Liam Kilcommons,
Barbara Emery, and Ernie Holeman. We gratefully acknowledge the SuperMAG
initiative and the SuperMAG collaborators for the index and substorm
data used herein.
NR 96
TC 3
Z9 3
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD DEC
PY 2015
VL 120
IS 12
BP 11013
EP 11031
DI 10.1002/2015JA021828
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA DC4GZ
UT WOS:000369180200058
ER
PT J
AU Nesaraja, CD
AF Nesaraja, C. D.
TI Nuclear Data Sheets for A=241
SO NUCLEAR DATA SHEETS
LA English
DT Article
ID SPONTANEOUSLY-FISSIONING ISOMERS; PU-241 HALF-LIFE; QUASI-PARTICLE
STATES; ODD-A-NUCLEI; N-GAMMA-F; ALPHA-DECAY; ACTINIDE NUCLEI;
EINSTEINIUM ISOTOPES; RADIOACTIVE DECAY; GROUND-STATE
AB Available information pertaining to the nuclear structure of ground and excited states for all known nuclei with mass numbers A=241 have been compiled and evaluated. The adopted level and decay schemes, as well as the detailed nuclear properties and configuration assignments based on experimental data are presented for these nuclides. When there are insufficient data, expected values from systematics of nuclear properties or/and theoretical calculations are quoted. Unexpected or discrepant experimental results are also noted. A summary and compilation of the discovery of various isotopes in this mass region is given in 2013Fr02 (Np-241, Pu-241, Am-241, Cm-241, Bk-241, and Cf-241), 2011Me01 (Es-241), and 2013Th02 (Fm-241).
C1 [Nesaraja, C. D.] Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA.
RP Nesaraja, CD (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA.
OI Nesaraja, Caroline/0000-0001-5571-8341
FU Office of Nuclear Physics, Office of Science, US Department of Energy
[DE-AC05-00OR22725]
FX Research sponsored by Office of Nuclear Physics, Office of Science, US
Department of Energy under contract DE-AC05-00OR22725.
NR 257
TC 2
Z9 2
U1 0
U2 0
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0090-3752
EI 1095-9904
J9 NUCL DATA SHEETS
JI Nucl. Data Sheets
PD DEC
PY 2015
VL 130
BP 183
EP 252
DI 10.1016/j.nds.2015.11.004
PG 70
WC Physics, Nuclear
SC Physics
GA DC9CE
UT WOS:000369517500004
ER
PT J
AU Woolley, RD
AF Woolley, Robert D.
TI OPTIMAL SHIELDING DESIGN FOR MINIMUM MATERIALS COST OR MASS
SO NUCLEAR TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 18th Topical Meeting of the Radiation Protection and Shielding Division
of ANS
CY SEP 14-18, 2014
CL Knoxville, TN
SP Amer Nucl Soc, Oak Ridge Nat Lab, Varian, Secur & Inspect Prod, NSA Proven Effect Solut, Navarro Res & Eng Inc, Kirk Nucl Informat Serv, Univ Tennessee, Dept Nucl Engn
DE shielding; optimization; Pontryagin
ID PARTIAL-DIFFERENTIAL-EQUATIONS; PONTRYAGIN MAXIMUM PRINCIPLE; 1ST
AB The mathematical underpinnings of cost optimal radiation shielding designs based on an extension of optimal control theory are presented, a heuristic algorithm to iteratively solve the resulting optimal design equations is suggested, and computational results for a simple test case are discussed.
A typical radiation shielding design problem can have infinitely many solutions, all satisfying the problem's specified set of radiation attenuation requirements. Each such design has its own total materials cost. For a design to be optimal, no admissible change in its deployment of shielding materials can result in a lower cost. This applies in particular to very small changes, which can be restated using the calculus of variations as the Euler-Lagrange equations. The associated Hamiltonian function and application of Pontryagin's theorem lead to conditions for a shield to be optimal.
C1 [Woolley, Robert D.] Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
RP Woolley, RD (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM woolley@pppl.gov
NR 31
TC 0
Z9 0
U1 2
U2 2
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
EI 1943-7471
J9 NUCL TECHNOL
JI Nucl. Technol.
PD DEC
PY 2015
VL 192
IS 3
SI SI
BP 191
EP 207
PG 17
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA DC8ZN
UT WOS:000369509800002
ER
PT J
AU McMath, GE
McKinney, GW
AF McMath, Garrett E.
McKinney, Gregg W.
TI ENHANCEMENTS TO THE MCNP6 BACKGROUND SOURCE
SO NUCLEAR TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 18th Topical Meeting of the Radiation Protection and Shielding Division
of ANS
CY SEP 14-18, 2014
CL Knoxville, TN
SP Amer Nucl Soc, Oak Ridge Nat Lab, Varian, Secur & Inspect Prod, NSA Proven Effect Solut, Navarro Res & Eng Inc, Kirk Nucl Informat Serv, Univ Tennessee, Dept Nucl Engn
DE MCNP6; cosmic ray; background
AB The particle transport code MCNP has been used to produce a background radiation data file on a worldwide grid that can easily be sampled as a source in the code. Location-dependent cosmic showers were modeled by Monte Carlo methods to produce the resulting neutron and photon background flux at 2054 locations around Earth. An improved galactic-cosmic-ray feature was used to model the source term as well as data from multiple sources to model the transport environment through atmosphere, soil, and seawater. A new elevation scaling feature was also added to the code to increase the accuracy of the cosmic neutron background for user locations with off-grid elevations. Benchmarking has shown the neutron integral flux values to be within experimental error.
C1 [McMath, Garrett E.; McKinney, Gregg W.] Los Alamos Natl Lab, MS P939, Los Alamos, NM 87545 USA.
RP McMath, GE (reprint author), Los Alamos Natl Lab, MS P939, Los Alamos, NM 87545 USA.
EM gem@lanl.gov
FU U.S. Department of Homeland Security, Domestic Nuclear Detection Office
[IAA HSHQDC-12-X-00251]
FX This work was sponsored by the U.S. Department of Homeland Security,
Domestic Nuclear Detection Office, under competitively awarded
contract/IAA HSHQDC-12-X-00251.
NR 20
TC 0
Z9 0
U1 1
U2 3
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
EI 1943-7471
J9 NUCL TECHNOL
JI Nucl. Technol.
PD DEC
PY 2015
VL 192
IS 3
SI SI
BP 232
EP 239
PG 8
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA DC8ZN
UT WOS:000369509800006
ER
PT J
AU Miller, TM
De Wet, WC
Patton, BW
AF Miller, Thomas M.
De Wet, Wouter C.
Patton, Bruce W.
TI COMPUTATIONAL ASSESSMENT OF NATURALLY OCCURRING NEUTRON AND PHOTON
BACKGROUND RADIATION PRODUCED BY EXTRATERRESTRIAL SOURCES
SO NUCLEAR TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 18th Topical Meeting of the Radiation Protection and Shielding Division
of ANS
CY SEP 14-18, 2014
CL Knoxville, TN
SP Amer Nucl Soc, Oak Ridge Nat Lab, Varian, Secur & Inspect Prod, NSA Proven Effect Solut, Navarro Res & Eng Inc, Kirk Nucl Informat Serv, Univ Tennessee, Dept Nucl Engn
DE galactic cosmic rays; background; Monte Carlo
AB A computational assessment of the variation in terrestrial neutron and photon background from extraterrestrial sources is presented. The motivation of this assessment is to evaluate the practicality of developing a tool or database to estimate background in real time (or near-real time) during an experimental measurement or to even predict the background for future measurements. The extraterrestrial source focused on during this assessment is naturally occurring galactic cosmic rays (GCRs). The MCNP6 transport code was used to perform the computational assessment. However, the GCR source available in MCNP6 was not used. Rather, models developed and maintained by NASA were used to generate the GCR sources. The largest variation in both neutron and photon background spectra was found to be caused by changes in elevation on Earth's surface, which can be as large as an order of magnitude. All other perturbations produced background variations on the order of a factor of 3 or less. The most interesting finding was that similar to 80% and 50% of terrestrial background neutrons and photons, respectively, are generated by interactions in Earth's surface and other naturally occurring and man-made objects near a detector of particles from extraterrestrial sources and their progeny created in Earth's atmosphere. This assessment shows that it will be difficult to estimate the terrestrial background from extraterrestrial sources without a good understanding of a detector's surroundings. Therefore, estimating or predicting background during a measurement environment like a mobile random search will be difficult.
C1 [Miller, Thomas M.; Patton, Bruce W.] Oak Ridge Natl Lab, POB 2008,MS 6170, Oak Ridge, TN 37831 USA.
[De Wet, Wouter C.] Univ Tennessee, 315 Pasqua Nucl Engn Bldg, Knoxville, TN 37996 USA.
RP Miller, TM (reprint author), Oak Ridge Natl Lab, POB 2008,MS 6170, Oak Ridge, TN 37831 USA.
EM millertm@ornl.gov
FU U.S. Department of Energy (DOE) National Nuclear Security
Administration's Office of Defense Nuclear Nonproliferation Research and
Development; UT-Battelle, LLC [DE-AC05-00OR22725]; DOE
FX We wish to acknowledge the U.S. Department of Energy (DOE) National
Nuclear Security Administration's Office of Defense Nuclear
Nonproliferation Research and Development for its support of this
project. This manuscript has been authored by UT-Battelle, LLC under
contract DE-AC05-00OR22725 with the DOE.
NR 13
TC 0
Z9 0
U1 0
U2 2
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
EI 1943-7471
J9 NUCL TECHNOL
JI Nucl. Technol.
PD DEC
PY 2015
VL 192
IS 3
SI SI
BP 240
EP 249
PG 10
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA DC8ZN
UT WOS:000369509800007
ER
PT J
AU Weldon, RA
Fensin, ML
McKinney, GW
AF Weldon, R. A., Jr.
Fensin, M. L.
McKinney, G. W.
TI TESTING THE DELAYED GAMMA CAPABILITY IN MCNP6
SO NUCLEAR TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 18th Topical Meeting of the Radiation Protection and Shielding Division
of ANS
CY SEP 14-18, 2014
CL Knoxville, TN
SP Amer Nucl Soc, Oak Ridge Nat Lab, Varian, Secur & Inspect Prod, NSA Proven Effect Solut, Navarro Res & Eng Inc, Kirk Nucl Informat Serv, Univ Tennessee, Dept Nucl Engn
DE MCNP6; delayed gamma; activation
ID FISSION
AB The mission of the Domestic Nuclear Detection Office is to quickly and reliably detect unauthorized attempts to import or transport special nuclear material for use against the United States. Developing detection equipment to meet this objective requires accurate simulation of both the detectable signature and detection mechanism.
A delayed particle capability was initially added to MCNPX 2.6. A in 2005 to sample the radioactive fission product parents and emit decay particles resulting from the decay chain. To meet the objectives of detection scenario modeling, the capability was designed to sample a particular time for emitting particular multiplicity of a particular energy. Because the sampling process of selecting both time and energy is interdependent, to linearize the time and emission sampling, atom densities are computed at several discrete time steps, and the time-integrated production is computed by multiplying the atom density by the decay constant and time step size to produce a cumulative distribution function for sampling the emission time, energy, and multiplicity. The delayed particle capability was initially given a time-bin structure to help reasonably reproduce, from a qualitative sense, a fission benchmark by Beddingfield, which examined the delayed gamma emission. This original benchmark was only qualitative and did not contain the magnitudes of the actual measured data but did contain relative graphical representation of the spectra. A better benchmark with measured data was later provided by Hunt, Mozin, Reedy, Selpel, and Tobin at the Idaho Accelerator Center; however, because of the complexity of the benchmark setup, sizable systematic errors were expected in the modeling, and initial results compared to MCNPX 2.7.0 showed errors outside of statistical fluctuation.
Presented here is a more simplified approach to benchmarking, utilizing closed form analytic solutions to the granddaughter equations for particular sets of decay systems. We examine five different decay chains ( two-stage decay to stable) and show the predictability of the MCNP6 delayed gamma feature. Results do show that while the default delayed gamma calculations available in the MCNP6 1.0 release can give accurate results for some isotopes ( e.g., Ba-137), the percent differences between the closed form analytic solutions and the MCNP6 calculations were often >40% (Mg-28, Al-28, K-42, Ca-47, Sc-47, Co-60). With the MCNP6 1.1 Beta release, the tenth entry on the DBCN card allows improved calculation within <5% as compared to the closed form analytic solutions for immediate parent emissions and transient equilibrium systems. While the tenth entry on the DBCN card for MCNP6 1.1 gives much better results for transient equilibrium systems and parent emissions in general, it does little to improve daughter emissions of secular equilibrium systems. Hypotheses were presented as to why daughter emissions of secular equilibrium systems might be mispredicted in some cases and not in others.
C1 [Weldon, R. A., Jr.; Fensin, M. L.; McKinney, G. W.] Los Alamos Natl Lab, MS-C921, Los Alamos, NM 87545 USA.
RP Weldon, RA (reprint author), Los Alamos Natl Lab, MS-C921, Los Alamos, NM 87545 USA.
EM mfensin@lanl.gov
FU U.S. Department of Homeland Security, DNDO [IAA HSHQDC-12-X-00251]
FX This work was sponsored by the U.S. Department of Homeland Security,
DNDO, under competitively awarded contract/IAA HSHQDC-12-X-00251.
NR 11
TC 0
Z9 0
U1 1
U2 1
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
EI 1943-7471
J9 NUCL TECHNOL
JI Nucl. Technol.
PD DEC
PY 2015
VL 192
IS 3
SI SI
BP 250
EP 258
PG 9
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA DC8ZN
UT WOS:000369509800008
ER
PT J
AU Ibrahim, AM
Peplow, DE
Grove, RE
Peterson, JL
Johnson, SR
AF Ibrahim, Ahmad M.
Peplow, Douglas E.
Grove, Robert E.
Peterson, Joshua L.
Johnson, Seth R.
TI THE MULTI-STEP CADIS METHOD FOR SHUTDOWN DOSE RATE CALCULATIONS AND
UNCERTAINTY PROPAGATION
SO NUCLEAR TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 18th Topical Meeting of the Radiation Protection and Shielding Division
of ANS
CY SEP 14-18, 2014
CL Knoxville, TN
SP Amer Nucl Soc, Oak Ridge Nat Lab, Varian, Secur & Inspect Prod, NSA Proven Effect Solut, Navarro Res & Eng Inc, Kirk Nucl Informat Serv, Univ Tennessee, Dept Nucl Engn
DE hybrid Monte Carlo/deterministic techniques; Multi-Step CADIS; shutdown
dose rate
ID ANALYSIS CAPABILITIES; VARIANCE REDUCTION; SCALE; CODE; ITER
AB Shutdown dose rate (SDDR) analysis requires (a) a neutron transport calculation to estimate neutron flux fields, (b) an activation calculation to compute radionuclide inventories and associated photon sources, and (c) a photon transport calculation to estimate final SDDR. In some applications, accurate full-scale Monte Carlo (MC) SDDR simulations are needed for very large systems with massive amounts of shielding materials. However, these simulations are impractical because calculation of space-and energy-dependent neutron fluxes throughout the structural materials is needed to estimate distribution of radioisotopes causing the SDDR. Biasing the neutron MC calculation using an importance function is not simple because it is difficult to explicitly express the response function, which depends on subsequent computational steps. Typical SDDR calculations do not consider how uncertainties in MC neutron calculation impact SDDR uncertainty, even though MC neutron calculation uncertainties usually dominate SDDR uncertainty.
The Multi-Step Consistent Adjoint Driven Importance Sampling (MS-CADIS) hybrid MC/deterministic method was developed to speed SDDR MC neutron transport calculation using a deterministically calculated importance function representing the neutron importance to the final SDDR. Undersampling is usually inevitable in large-problem SDDR simulations because it is very difficult for the MC method to simulate particles in all space and energy elements of the neutron calculation.
MS-CADIS can assess the degree of undersampling in SDDR calculations by determining the fraction of the SDDR response in the space and energy elements that did not have any scores in the MC neutron calculation. It can also provide estimates for upper and lower limits of SDDR statistical uncertainties resulting from uncertainties in MC neutron calculation. MS-CADIS was applied to the ITER SDDR benchmark problem that resembles the configuration and geometrical arrangement of an upper port plug in ITER. Without using the hybrid MC/deterministic methods to speed MC neutron calculations, SDDR calculations were significantly undersampled for all tallies, even when MC neutron calculation computational time was 32 CPU-days. However, all SDDR tally results with MC neutron calculations of only 2 CPU-days converged with the standard Forward-Weighted CADIS (FW-CADIS) method and the MS-CADIS method. Compared to the standard FW-CADIS approach, MS-CADIS decreased the undersampling in the calculated SDDR by factors between 0.9% and 0.3% for computational times between 4 and 32 CPU-days, and it increased the computational efficiency of the SDDR neutron MC calculation by factors between 43% and 69%.
C1 [Ibrahim, Ahmad M.; Peplow, Douglas E.; Grove, Robert E.; Peterson, Joshua L.; Johnson, Seth R.] Oak Ridge Natl Lab, Reactor & Nucl Syst Div, POB 2008,Bldg 5700, Oak Ridge, TN 37831 USA.
RP Ibrahim, AM (reprint author), Oak Ridge Natl Lab, Reactor & Nucl Syst Div, POB 2008,Bldg 5700, Oak Ridge, TN 37831 USA.
EM ibrahimam@ornl.gov
RI Peterson, Josh/E-3037-2016
OI Peterson, Josh/0000-0002-9181-192X
FU UT-Battelle, LLC [DE-AC05-00OR22725]; U.S. Department of Energy
FX Oak Ridge National Laboratory is managed by UT-Battelle, LLC, under
contract DE-AC05-00OR22725 with the U.S. Department of Energy.
NR 25
TC 0
Z9 0
U1 1
U2 1
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
EI 1943-7471
J9 NUCL TECHNOL
JI Nucl. Technol.
PD DEC
PY 2015
VL 192
IS 3
SI SI
BP 286
EP 298
PG 13
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA DC8ZN
UT WOS:000369509800012
ER
PT J
AU Zurek, W
AF Zurek, Wojciech
TI A last word on quantum Darwinism Reply
SO PHYSICS TODAY
LA English
DT Letter
C1 [Zurek, Wojciech] Los Alamos Natl Lab, Los Alamos, NM USA.
RP Zurek, W (reprint author), Los Alamos Natl Lab, Los Alamos, NM USA.
NR 1
TC 0
Z9 0
U1 3
U2 3
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0031-9228
EI 1945-0699
J9 PHYS TODAY
JI Phys. Today
PD DEC
PY 2015
VL 68
IS 12
BP 14
EP 14
DI 10.1063/PT.3.3003
PG 1
WC Physics, Multidisciplinary
SC Physics
GA DC7PC
UT WOS:000369411600011
ER
PT J
AU Benge, G
AF Benge, Glen
TI Cement Evaluation-A Risky Business
SO SPE DRILLING & COMPLETION
LA English
DT Article
ID BOND LOGS
AB Cement evaluation is often limited to running a cement-bond log (CBL) and making some attempt to interpret the results and determine whether there is isolation in the wellbore. Often, that interpretation is made in isolation with little or no information on what occurred during the drilling and cementing of the well, or the cement systems used. Evaluating cement in older wells where the drilling report states "ran casing, cemented same" can be particularly challenging.
Cement evaluation is much more than just a CBL. Understanding the objectives of the cement job, the design limitations imposed by those objectives, and the resulting slurry and job designs are integral parts of cement evaluation. Often, the selection of a specialty cement system to meet specific job objectives can dictate how one can evaluate the cement.
To properly evaluate a cement sheath, knowledge of the cement job, slurry designs, and the limitations of the evaluation technique. To attempt to perform a cement evaluation that is based solely on the log output from a CBL, or any log, invites considerable error and bias into the resulting interpretation.
This paper reviews various methods of cement evaluationfrom job data, casing-and formation-pressure testing through sonic and ultrasonic logging. The assumptions associated with each technique are outlined, and the discussion includes some of the limitations of the various techniques, along with cautions on how misinterpretation of the results can lead to assumptions of cement integrity that may not be appropriate.
The impact of new specialty cement designs, which incorporate high concentrations of inert materials to give the set cement unique properties, is discussed. The ability of specific logging methods to evaluate the presence of these slurries is presented. Data on selected specialty cement systems in which conventional ultrasonic cement-analyzer-strength data are not representative of the crush strength of the cement caused by the incorporation of specialty materials are included.
Both overview of cement evaluation and a risk-based discussion of the technique that may be most appropriate on the basis of the cementing objectives are presented. Methods of reducing risk uncertainty in cement evaluation are discussed along with the "validity" of the various data sets available to the engineer to perform a proper cement evaluation on the well.
Understanding the objectives of the cement job sets the boundary conditions for the designs, and from those designs, one can determine the ability to evaluate the resulting cement placement and well isolation. Setting the evaluation methodology and understanding the type of information required to apply that methodology can improve the quality of the evaluation.
C1 [Benge, Glen] ExxonMobil, Irving, TX 75039 USA.
[Benge, Glen] Amer Petr Inst, Subcomm Oil Well Cementing 10, Washington, DC USA.
[Benge, Glen] US DOE, Washington, DC USA.
[Benge, Glen] Amer Assoc Drilling Engineers, New Orleans Chapter, Lafayette, LA USA.
NR 10
TC 0
Z9 0
U1 2
U2 6
PU SOC PETROLEUM ENG
PI RICHARDSON
PA 222 PALISADES CREEK DR,, RICHARDSON, TX 75080 USA
SN 1064-6671
EI 1930-0204
J9 SPE DRILL COMPLETION
JI SPE Drill. Complet.
PD DEC
PY 2015
VL 30
IS 4
BP 322
EP 325
PG 4
WC Engineering, Petroleum
SC Engineering
GA DC4AH
UT WOS:000369161400005
ER
PT J
AU King, WE
Anderson, AT
Ferencz, RM
Hodge, NE
Kamath, C
Khairallah, SA
Rubenchik, AM
AF King, W. E.
Anderson, A. T.
Ferencz, R. M.
Hodge, N. E.
Kamath, C.
Khairallah, S. A.
Rubenchik, A. M.
TI Laser powder bed fusion additive manufacturing of metals; physics,
computational, and materials challenges
SO APPLIED PHYSICS REVIEWS
LA English
DT Review
ID FINITE-ELEMENT-ANALYSIS; SINGLE-TRACK FORMATION; HEAT-TRANSFER;
FEEDBACK-CONTROL; STAINLESS-STEEL; MELTING PROCESS; SIMULATION;
TEMPERATURE; RADIATION; VAPORIZATION
AB The production of metal parts via laser powder bed fusion additive manufacturing is growing exponentially. However, the transition of this technology from production of prototypes to production of critical parts is hindered by a lack of confidence in the quality of the part. Confidence can be established via a fundamental understanding of the physics of the process. It is generally accepted that this understanding will be increasingly achieved through modeling and simulation. However, there are significant physics, computational, and materials challenges stemming from the broad range of length and time scales and temperature ranges associated with the process. In this paper, we review the current state of the art and describe the challenges that need to be met to achieve the desired fundamental understanding of the physics of the process. (C) 2015 AIP Publishing LLC.
C1 [King, W. E.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
[Anderson, A. T.; Ferencz, R. M.; Hodge, N. E.; Khairallah, S. A.] Lawrence Livermore Natl Lab, Engn Directorate, Livermore, CA 94550 USA.
[Kamath, C.] Lawrence Livermore Natl Lab, Computat Directorate, Livermore, CA 94550 USA.
[Rubenchik, A. M.] Lawrence Livermore Natl Lab, NIF, Livermore, CA 94550 USA.
[Rubenchik, A. M.] Lawrence Livermore Natl Lab, Photon Sci Directorate, Livermore, CA 94550 USA.
RP King, WE (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
EM weking@llnl.gov
OI King, Wayne/0000-0002-5060-5484
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Laboratory Directed Research and Development
Program at LLNL [13-SI-002]
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract No.
DE-AC52-07NA27344. This work was funded by the Laboratory Directed
Research and Development Program at LLNL under project tracking code
13-SI-002.
NR 94
TC 14
Z9 14
U1 43
U2 113
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1931-9401
J9 APPL PHYS REV
JI Appl. Phys. Rev.
PD DEC
PY 2015
VL 2
IS 4
AR 041304
DI 10.1063/1.4937809
PG 26
WC Physics, Applied
SC Physics
GA DC0KR
UT WOS:000368906500012
ER
PT J
AU Baxamusa, SH
Suresh, A
Ehrmann, P
Laurence, T
Hanania, J
Hayes, J
Harley, S
Burkey, DD
AF Baxamusa, Salmaan H.
Suresh, Aravind
Ehrmann, Paul
Laurence, Ted
Hanania, Jiries
Hayes, Jeff
Harley, Stephen
Burkey, Daniel D.
TI Photo-oxidation of Polymers Synthesized by Plasma and Initiated CVD
SO CHEMICAL VAPOR DEPOSITION
LA English
DT Article
DE iCVD; PL; Photo-oxidation; Plasma polymers; Stability
ID CHEMICAL-VAPOR-DEPOSITION; METHYL-METHACRYLATE; THERMAL-STABILITY;
GLOW-DISCHARGE; THIN-FILMS; POLYMERIZATION; KINETICS; MONOMER
AB Plasma polymers are often limited by their susceptibility to spontaneous and photo-oxidation. We show that the unusual photoluminescence (PL) behavior of a plasma polymer of trans-2-butene is correlated with its PL strength. These photo-processes occur under blue light illumination (lambda = 405 nm), distinguishing them from traditional ultraviolet degradation of polymers. These photo-active defects are likely formed during the plasma deposition process, and we show that a polymer synthesized using initiated (i) CVD, a non-plasma method, has 1000x lower PL signal and enhanced photo-stability. Non-plasma methods, such as iCVD, may therefore be a route to overcoming material aging issues that limit the adoption of plasma polymers.
C1 [Baxamusa, Salmaan H.; Ehrmann, Paul; Laurence, Ted; Harley, Stephen] Lawrence Livermore Natl Lab, Div Mat Sci, Livermore, CA USA.
[Suresh, Aravind; Hanania, Jiries; Burkey, Daniel D.] Univ Connecticut, Chem & Biomol Engn Dept, Storrs, CT USA.
[Hayes, Jeff] Gen Atom Co, San Diego, CA USA.
RP Baxamusa, SH (reprint author), Lawrence Livermore Natl Lab, Div Mat Sci, Livermore, CA USA.
EM baxamusa1@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
within the LDRD program [DE-AC52-07NA27344]
FX This work performed under the auspices of the U.S. Department of Energy
by Lawrence Livermore National Laboratory under contract
DE-AC52-07NA27344 within the LDRD program.
NR 47
TC 1
Z9 1
U1 4
U2 12
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 0948-1907
EI 1521-3862
J9 CHEM VAPOR DEPOS
JI Chem. Vapor Depos.
PD DEC
PY 2015
VL 21
IS 10-12
BP 267
EP 274
DI 10.1002/cvde.201507173
PG 8
WC Electrochemistry; Materials Science, Coatings & Films; Physics,
Condensed Matter
SC Electrochemistry; Materials Science; Physics
GA DC3SZ
UT WOS:000369140400006
ER
PT J
AU Monzel, WJ
Hoff, BW
Maestas, SS
French, DM
Hayden, SC
AF Monzel, W. Jacob
Hoff, Brad W.
Maestas, Sabrina S.
French, David M.
Hayden, Steven C.
TI Dielectric Breakdown of Additively Manufactured Polymeric Materials
SO IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
LA English
DT Article
DE Rapid prototyping; dielectric breakdown; plastics; dielectric materials;
dielectric measurements; dielectric strength; additive manufacturing;
SLA; Polyjet; fused deposition modeling; FDM; SLS
AB Dielectric strength testing of selected Polyjet-printed polymer plastics was performed in accordance with ASTM D149. This dielectric strength data is compared to manufacturer-provided dielectric strength data for selected plastics printed using the stereolithography (SLA), fused deposition modeling (FDM), and selective laser sintering (SLS) methods. Tested Polyjet samples demonstrated dielectric strengths as high as 47.5 kV/mm for a 0.5 mm thick sample and 32.1 kV/mm for a 1.0 mm sample. The dielectric strength of the additively manufactured plastics evaluated as part of this study was lower than the majority of non-printed plastics by at least 15% (with the exception of polycarbonate).
C1 [Monzel, W. Jacob; Hoff, Brad W.; Maestas, Sabrina S.; French, David M.] Air Force Res Lab, Albuquerque, NM 87117 USA.
[Hayden, Steven C.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87545 USA.
RP Monzel, WJ (reprint author), Air Force Res Lab, Albuquerque, NM 87117 USA.
FU AFRL
FX W. J. Monzel's participation in this work was accomplished under the Air
Force Research Laboratory (AFRL) Directed Energy Summer Scholars
Program. Funding for this work was provided by AFRL. S. C. Hayden's
participation in this work was performed, in part, at the Center for
Integrated Nanotechnologies, an Office of Science User Facility operated
for the U.S. Department of Energy (DOE) Office of Science. Polyjet
sample testing was performed at Element Materials Technology
(www.element.com).
NR 51
TC 1
Z9 1
U1 5
U2 16
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1070-9878
EI 1558-4135
J9 IEEE T DIELECT EL IN
JI IEEE Trns. Dielectr. Electr. Insul.
PD DEC
PY 2015
VL 22
IS 6
BP 3543
EP 3549
DI 10.1109/TDEI.2015.005199
PG 7
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA DC0XH
UT WOS:000368940800057
ER
PT J
AU Xiao, H
Endo, S
Wong, M
Skamarock, WC
Klemp, JB
Fast, JD
Gustafson, WI
Vogelmann, AM
Wang, HL
Liu, YG
Lin, WY
AF Xiao, Heng
Endo, Satoshi
Wong, May
Skamarock, William C.
Klemp, Joseph B.
Fast, Jerome D.
Gustafson, William I.
Vogelmann, Andrew M.
Wang, Hailong
Liu, Yangang
Lin, Wuyin
TI Modifications to WRF's dynamical core to improve the treatment of
moisture for large-eddy simulations
SO JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
LA English
DT Article
DE WRF; LES; time-split integration; dynamic core; compressible system;
cloudy boundary layer
ID MESOSCALE CELLULAR STRUCTURES; MARINE STRATOCUMULUS; BOUNDARY-LAYER;
PART I; MODEL; SYSTEM; IMPACT; MICROPHYSICS; SCHEMES; CLIMATE
AB Yamaguchi and Feingold (2012) note that the cloud fields in their large-eddy simulations (LESs) of marine stratocumulus using the Weather Research and Forecasting (WRF) model exhibit a strong sensitivity to time stepping choices. In this study, we reproduce and analyze this sensitivity issue using two stratocumulus cases, one marine and one continental. Results show that (1) the sensitivity is associated with spurious motions near the moisture jump between the boundary layer and the free atmosphere, and (2) these spurious motions appear to arise from neglecting small variations in water vapor mixing ratio (q(v)) in the pressure gradient calculation in the acoustic substepping portion of the integration procedure. We show that this issue is remedied in the WRF dynamical core by replacing the prognostic equation for the potential temperature with one for the moist potential temperature (m)=(1+1.61q(v)), which allows consistent treatment of moisture in the calculation of pressure during the acoustic substeps. With this modification, the spurious motions and the sensitivity to the time stepping settings (i.e., the dynamic time step length and number of acoustic sub-steps) are eliminated in both of the example stratocumulus cases. This modification improves the applicability of WRF for LES applications, and possibly other models using similar dynamical core formulations, and also permits the use of longer time steps than in the original code.
C1 [Xiao, Heng; Wong, May; Fast, Jerome D.; Gustafson, William I.; Wang, Hailong] Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
[Endo, Satoshi; Vogelmann, Andrew M.; Liu, Yangang; Lin, Wuyin] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Skamarock, William C.; Klemp, Joseph B.] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
RP Xiao, H (reprint author), Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
EM Heng.Xiao@pnnl.gov
RI Liu, Yangang/H-6154-2011; Gustafson, William/A-7732-2008; Vogelmann,
Andrew/M-8779-2014; Wang, Hailong/B-8061-2010
OI Gustafson, William/0000-0001-9927-1393; Vogelmann,
Andrew/0000-0003-1918-5423; Wang, Hailong/0000-0002-1994-4402
FU U.S. Department of Energy Office of Biological and Environmental
Research as part of the Atmospheric System Research Program; DOE;
Atmospheric System Research Program [DE-SC00112704]; DOE
[DE-AC05-76RL01830]; Department of Energy's Office of Biological and
Environmental Research
FX The authors thank Branko Kosovic for his suggestions with this research.
This research is based on work supported by the U.S. Department of
Energy Office of Biological and Environmental Research as part of the
Atmospheric System Research Program and a DOE Early Career award to
Gustafson. The research conducted at Brookhaven National Laboratory was
supported by the Atmospheric System Research Program via DE-SC00112704.
Data were used from the Atmospheric Radiation Measurement Climate
Research Facility, a DOE Office of Science User Facility. We gratefully
acknowledge the usage of the WRF LES package from Tak Yamaguchi
(available at http://esrl.noaa.gov/csd/staff/tak.yamaguchi/code/). The
Pacific Northwest National Laboratory is operated for DOE by Battelle
Memorial Institute under contract DE-AC05-76RL01830. A portion of this
research was performed using the Environmental Molecular Sciences
Laboratory, a DOE Office of Science user facility sponsored by the
Department of Energy's Office of Biological and Environmental Research
and located at Pacific Northwest National Laboratory, and PNNL
Institutional Computing at Pacific Northwest National Laboratory. The
newest WRF version can be downloaded from http:/wrf-model.org. The
simulation data used in this paper will be made available upon request
to the first author.
NR 28
TC 0
Z9 0
U1 1
U2 11
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1942-2466
J9 J ADV MODEL EARTH SY
JI J. Adv. Model. Earth Syst.
PD DEC
PY 2015
VL 7
IS 4
BP 1627
EP 1642
DI 10.1002/2015MS000532
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA DB8AW
UT WOS:000368739800007
ER
PT J
AU Li, HY
Leung, LR
Tesfa, T
Voisin, N
Hejazi, M
Liu, L
Liu, Y
Rice, J
Wu, H
Yang, XF
AF Li, Hong-Yi
Leung, L. Ruby
Tesfa, Teklu
Voisin, Nathalie
Hejazi, Mohamad
Liu, Lu
Liu, Ying
Rice, Jennie
Wu, Huan
Yang, Xiaofan
TI Modeling stream temperature in the Anthropocene: An earth system
modeling approach
SO JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
LA English
DT Article
DE stream temperature; earth system modeling; reservoir operation
ID INTEGRATED ASSESSMENT; CLIMATE-CHANGE; ELECTRICITY-GENERATION; WATER;
21ST-CENTURY; PROJECTIONS; DEMANDS; SURFACE
AB A new large-scale stream temperature model has been developed within the Community Earth System Model (CESM) framework. The model is coupled with the Model for Scale Adaptive River Transport (MOSART) that represents river routing and a water management model (WM) that represents the effects of reservoir operations and water withdrawals on flow regulation. The coupled models allow the impacts of reservoir operations and withdrawals on stream temperature to be explicitly represented in a physically based and consistent way. The models have been applied to the Contiguous United States driven by observed meteorological forcing. Including water management in the models improves the agreement between the simulated and observed streamflow at a large number of stream gauge stations. It is then shown that the model is capable of reproducing stream temperature spatiotemporal variation satisfactorily by comparing against the observed data from over 320 USGS stations. Both climate and water management are found to have important influence on the spatiotemporal patterns of stream temperature. Furthermore, it is quantitatively estimated that reservoir operation could cool down stream temperature in the summer low-flow season (August-October) by as much as 1 approximate to 2 degrees C due to enhanced low-flow conditions, which have important implications to aquatic ecosystems. Sensitivity of the simulated stream temperature to input data and reservoir operation rules used in the WM model motivates future directions to address some limitations in the current modeling framework.
C1 [Li, Hong-Yi; Leung, L. Ruby; Tesfa, Teklu; Voisin, Nathalie; Hejazi, Mohamad; Liu, Ying; Rice, Jennie; Yang, Xiaofan] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Liu, Lu; Wu, Huan] Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA.
[Wu, Huan] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
RP Li, HY (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM hongyi.li@pnnl.gov
RI Li, Hong-Yi/C-9143-2014;
OI Li, Hong-Yi/0000-0001-5690-3610; Voisin, Nathalie/0000-0002-6848-449X
FU Office of Science of the U.S. Department of Energy Biological and
Environmental Research as part of the Integrated Assessment Research
Program; Battelle for the U.S. Department of Energy [DE-AC05-76RLO1830]
FX This work was supported by the Office of Science of the U.S. Department
of Energy Biological and Environmental Research as part of the
Integrated Assessment Research Program. Initial model development and
compilation of observation data for model evaluation were supported by
the Platform for Regional Integrated Modeling and Analysis (PRIMA)
initiative at the Pacific Northwest National Laboratory. The Pacific
Northwest National Laboratory is operated by Battelle for the U.S.
Department of Energy under Contract DE-AC05-76RLO1830. The data and
source code used in this study are available upon individual request
(hongyi.li@pnnl.gov).
NR 36
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PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1942-2466
J9 J ADV MODEL EARTH SY
JI J. Adv. Model. Earth Syst.
PD DEC
PY 2015
VL 7
IS 4
BP 1661
EP 1679
DI 10.1002/2015MS000471
PG 19
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA DB8AW
UT WOS:000368739800009
ER
PT J
AU Ma, HY
Chuang, CC
Klein, SA
Lo, MH
Zhang, Y
Xie, S
Zheng, X
Ma, PL
Zhang, Y
Phillips, TJ
AF Ma, H. -Y.
Chuang, C. C.
Klein, S. A.
Lo, M. -H.
Zhang, Y.
Xie, S.
Zheng, X.
Ma, P. -L.
Zhang, Y.
Phillips, T. J.
TI An improved hindcast approach for evaluation and diagnosis of physical
processes in global climate models
SO JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
LA English
DT Article
DE GCM; model evaluation; transpose-AMIP; initial conditions; hindcast
ID COMMUNITY-ATMOSPHERE-MODEL; SOUTHEAST PACIFIC STRATOCUMULUS; NUMERICAL
WEATHER PREDICTION; DATA ASSIMILATION SYSTEM; GREAT-PLAINS SITE;
FORECAST ERRORS; DIGITAL-FILTER; SIMULATIONS; INITIALIZATION;
SENSITIVITY
AB We present an improved procedure of generating initial conditions (ICs) for climate model hindcast experiments with specified sea surface temperature and sea ice. The motivation is to minimize errors in the ICs and lead to a better evaluation of atmospheric parameterizations' performance in the hindcast mode. We apply state variables (horizontal velocities, temperature, and specific humidity) from the operational analysis/reanalysis for the atmospheric initial states. Without a data assimilation system, we apply a two-step process to obtain other necessary variables to initialize both the atmospheric (e.g., aerosols and clouds) and land models (e.g., soil moisture). First, we nudge only the model horizontal velocities toward operational analysis/reanalysis values, given a 6 h relaxation time scale, to obtain all necessary variables. Compared to the original strategy in which horizontal velocities, temperature, and specific humidity are nudged, the revised approach produces a better representation of initial aerosols and cloud fields which are more consistent and closer to observations and model's preferred climatology. Second, we obtain land ICs from an off-line land model simulation forced with observed precipitation, winds, and surface fluxes. This approach produces more realistic soil moisture in the land ICs. With this refined procedure, the simulated precipitation, clouds, radiation, and surface air temperature over land are improved in the Day 2 mean hindcasts. Following this procedure, we propose a Core integration suite which provides an easily repeatable test allowing model developers to rapidly assess the impacts of various parameterization changes on the fidelity of modeled cloud-associated processes relative to observations.
C1 [Ma, H. -Y.; Chuang, C. C.; Klein, S. A.; Zhang, Y.; Xie, S.; Zheng, X.; Zhang, Y.; Phillips, T. J.] Lawrence Livermore Natl Lab, Program Climate Model Diag & Intercomparison, Livermore, CA USA.
[Lo, M. -H.] Natl Taiwan Univ, Dept Atmospher Sci, Taipei 10764, Taiwan.
[Ma, P. -L.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Ma, HY (reprint author), Lawrence Livermore Natl Lab, Program Climate Model Diag & Intercomparison, Livermore, CA USA.
EM ma21@llnl.gov
RI chuang, cathy/H-4814-2012; Klein, Stephen/H-4337-2016; Xie,
Shaocheng/D-2207-2013; Ma, Hsi-Yen/K-1019-2013; Ma, Po-Lun/G-7129-2015;
Zheng, Xue/F-9988-2016
OI Klein, Stephen/0000-0002-5476-858X; Xie, Shaocheng/0000-0001-8931-5145;
LO, MIN-HUI/0000-0002-8653-143X; Ma, Po-Lun/0000-0003-3109-5316; Zheng,
Xue/0000-0002-9372-1776
FU Regional and Global Climate Modeling and Atmospheric System Research
programs of the U.S. Department of Energy as part of the CAPT; U.S.
Department of Energy by LLNL [DE-AC52-07NA27344]; Battelle Memorial
Institute for the U.S. Department of Energy [DE-AC05-76RL01830]; MOST in
Taiwan [100-2119-M-001-029-MY5]
FX We thank David Williamson, Brian Medeiros, Julio Bacmeister, and Patrick
Callaghan at NCAR for discussion of this work. We also thank two
anonymous reviewers and Associate Editor for their valuable comments on
this paper. We are grateful to the ECMWF for making their operational
analyses and reanalysis available. Computing resources were provided
from the Livermore Computing Center at LLNL and the National Energy
Research Scientific Computing Center (NERSC). The work was funded by the
Regional and Global Climate Modeling and Atmospheric System Research
programs of the U.S. Department of Energy as part of the CAPT. This work
was performed under the auspices of the U.S. Department of Energy by
LLNL under contract DE-AC52-07NA27344. Pacific Northwest National
Laboratory is operated by Battelle Memorial Institute for the U.S.
Department of Energy under contract DE-AC05-76RL01830. Min-Hui Lo was
supported by the MOST 100-2119-M-001-029-MY5 in Taiwan. The simulations
will be available online through the NERSC Science Gateways (details
provided on https://www.nersc.gov/users/science-gateways/). Due to the
large volume of data sets and limited disk space, data will be shared
online upon request.
NR 69
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PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1942-2466
J9 J ADV MODEL EARTH SY
JI J. Adv. Model. Earth Syst.
PD DEC
PY 2015
VL 7
IS 4
BP 1810
EP 1827
DI 10.1002/2015MS000490
PG 18
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA DB8AW
UT WOS:000368739800016
ER
PT J
AU Tang, JY
Riley, WJ
Niu, J
AF Tang, Jinyun
Riley, William J.
Niu, Jie
TI Incorporating root hydraulic redistribution in CLM4.5: Effects on
predicted site and global evapotranspiration, soil moisture, and water
storage
SO JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
LA English
DT Article
DE root hydraulic redistribution; evapotranspiration; total water storage
ID PHYSICAL-PROPERTIES; FOREST ECOSYSTEM; AMAZON BASIN; MODEL; CLIMATE;
EVAPORATION; TRANSPIRATION; SIMULATION; EQUATIONS; TRANSPORT
AB We implemented the Amenu-Kumar model in the Community Land Model (CLM4.5) to simulate plant Root Hydraulic Redistribution (RHR) and analyzed its influence on CLM hydrology from site to global scales. We evaluated two numerical implementations: the first solved the coupled equations of root and soil water transport concurrently, while the second solved the two equations sequentially. Through sensitivity analysis, we demonstrate that the sequentially coupled implementation (SCI) is numerically incorrect, whereas the tightly coupled implementation (TCI) is numerically robust with numerical time steps varying from 1 to 30 min. At the site-level, we found the SCI approach resulted in better agreement with measured evapotranspiration (ET) at the AmeriFlux Blodgett Forest site, California, whereas the two approaches resulted in equally poor agreement between predicted and measured ET at the LBA Tapajos KM67 Mature Forest site in Amazon, Brazil. Globally, the SCI approach overestimated annual land ET by as much as 3.5 mm d(-1) in some grid cells when compared to the TCI estimates. These comparisons demonstrate that TCI is a more robust numerical implementation of RHR. However, we found, even with TCI, that incorporating RHR resulted in worse agreement with measured soil moisture at both the Blodgett Forest and Tapajos sites and degraded the agreement between simulated terrestrial water storage anomaly and Gravity Recovery and Climate Experiment (GRACE) observations. We find including RHR in CLM4.5 improved ET predictions compared with the FLUXNET-MTE estimates north of 20 degrees N but led to poorer predictions in the tropics. The biases in ET were robust and significant regardless of the four different pedotransfer functions or of the two meteorological forcing data sets we applied. We also found that the simulated water table was unrealistically sensitive to RHR. Therefore, we contend that further structural and data improvements are warranted to improve the hydrological dynamics in CLM4.5.
C1 [Tang, Jinyun; Riley, William J.; Niu, Jie] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Tang, JY (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
EM jinyuntang@lbl.gov
RI Tang, Jinyun/M-4922-2013; Riley, William/D-3345-2015
OI Tang, Jinyun/0000-0002-4792-1259; Riley, William/0000-0002-4615-2304
FU Office of Science, Office of Biological and Environmental Research of
the U.S. Department of Energy [DE-AC02-05CH11231]
FX This research was supported by the Director, Office of Science, Office
of Biological and Environmental Research of the U.S. Department of
Energy under Contract DE-AC02-05CH11231 as part of their Regional and
Global Climate Modeling (RGCM) Program and as part of the
Next-Generation Ecosystem Experiments (NGEE Arctic) project. All results
in this paper are produced using a modified version of CLM4.5, which is
available from the corresponding author upon request (Email:
jinyuntang@lbl.gov). The AmeriFlux level-4 data are downloaded from
http://ameriflux.ornl.gov. The GRACE data are downloaded from
http://grace.jpl.nasa.gov. The GPCP data are downloaded from
http://precip.gsfc.nasa.gov. The FLUXNET-MTE data are downloaded from
https://www.bgc-jena.mpg.de/bgi/index.php/Services/Overview.
NR 40
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PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1942-2466
J9 J ADV MODEL EARTH SY
JI J. Adv. Model. Earth Syst.
PD DEC
PY 2015
VL 7
IS 4
BP 1828
EP 1848
DI 10.1002/2015MS000484
PG 21
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA DB8AW
UT WOS:000368739800017
ER
PT J
AU Benedict, JJ
Pritchard, MS
Collins, WD
AF Benedict, James J.
Pritchard, Michael S.
Collins, William D.
TI Sensitivity of MJO propagation to a robust positive Indian Ocean dipole
event in the superparameterized CAM
SO JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
LA English
DT Article
DE Madden-Julian oscillation; intraseasonal variability;
superparameterization; Indian Ocean dipole; tropical convection; ENSO
ID MADDEN-JULIAN OSCILLATION; MOIST STATIC ENERGY; SEA-SURFACE TEMPERATURE;
ATMOSPHERIC INTRASEASONAL VARIABILITY; LARGE-SCALE MODES; TROPICAL
CIRCULATION; EL-NINO; PART II; SUBSEASONAL VARIABILITY; GRADIENT
APPROXIMATION
AB The superparameterized Community Atmosphere Model (SPCAM) is used to investigate the impact and geographic sensitivity of positive Indian Ocean Dipole (+IOD) sea-surface temperatures (SSTs) on Madden-Julian oscillation (MJO) propagation. The goal is to clarify potentially appreciable +IOD effects on MJO dynamics detected in prior studies by using a global model with explicit convection representation. Prescribed climatological October SSTs and variants of the SST distribution from October 2006, a +IOD event, force the model. Modest MJO convection weakening over the Maritime Continent occurs when either climatological SSTs, or +IOD SST anomalies restricted to the Indian Ocean, are applied. However, severe MJO weakening occurs when either +IOD SST anomalies are applied globally or restricted to the equatorial Pacific. MJO disruption is associated with time-mean changes in the zonal wind profile and lower moist static energy (MSE) in subsiding air masses imported from the Subtropics by Rossby-like gyres. On intraseasonal scales, MJO disruption arises from significantly smaller MSE accumulation, weaker meridional advective moistening, and overactive submonthly eddies that mix drier subtropical air into the path of MJO convection. These results (1) demonstrate that SPCAM reproduces observed time-mean and intraseasonal changes during +IOD episodes, (2) reaffirm the role that submonthly eddies play in MJO propagation and show that such multiscale interactions are sensitive to interannual SST states, and (3) suggest that boreal fall +IOD SSTs local to the Indian Ocean have a significantly smaller impact on Maritime Continent MJO propagation compared to contemporaneous Pacific SST anomalies which, for October 2006, resemble El Nino-like conditions.
C1 [Benedict, James J.; Collins, William D.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Climate Sci, Berkeley, CA 94720 USA.
[Pritchard, Michael S.] Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA.
[Collins, William D.] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA.
RP Benedict, JJ (reprint author), Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Coral Gables, FL 33124 USA.
EM jjbenedict@lbl.gov
RI Collins, William/J-3147-2014; Benedict, James/M-5824-2013
OI Collins, William/0000-0002-4463-9848; Benedict,
James/0000-0001-5115-5131
FU National Science Foundation (NSF) [OCI-1053575, TG-ATM120034]; U.S.
Department of Energy (DOE); NSF [AGS-1419518]; DOE [DE-SC0012152,
DE-SC0012548]
FX We thank Hongyan Zhu and one anonymous reviewer for their constructive
comments on this manuscript. GPCP precipitation data provided by the
NOAA/OAR/ESRL PSD, Boulder, Colorado, USA
(http://www.esrl.noaa.gov/psd/). Data discussed in this paper can be
made available from the authors upon request. This study used the
Extreme Science and Engineering Discovery Environment, which is
supported by National Science Foundation (NSF) grant OCI-1053575, under
allocation TG-ATM120034. J.B. and W.C. were funded by the U.S.
Department of Energy (DOE) Scientific Discovery for Advanced Computing
"Multiscale Methods for Accurate, Efficient, and Scale-Aware Models of
the Earth System" project. M.P. was funded by NSF grant AGS-1419518 and
DOE grants DE-SC0012152 and DE-SC0012548. This study benefitted greatly
from discussions with Chidong Zhang, Toshi Shinoda, David Randall, and
Charlotte DeMott.
NR 82
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U2 11
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1942-2466
J9 J ADV MODEL EARTH SY
JI J. Adv. Model. Earth Syst.
PD DEC
PY 2015
VL 7
IS 4
BP 1901
EP 1917
DI 10.1002/2015MS000530
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA DB8AW
UT WOS:000368739800021
ER
PT J
AU He, YJ
Yang, JY
Zhuang, QL
Harden, JW
McGuire, AD
Liu, YL
Wang, GS
Gu, LH
AF He, Yujie
Yang, Jinyan
Zhuang, Qianlai
Harden, Jennifer W.
McGuire, Anthony D.
Liu, Yaling
Wang, Gangsheng
Gu, Lianhong
TI Incorporating microbial dormancy dynamics into soil decomposition models
to improve quantification of soil carbon dynamics of northern temperate
forests
SO JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
LA English
DT Article
DE microbial life history traits; microbial dormancy; soil C:N ratio;
Michaelis-Menten kinetics; temperate forest ecosystem; soil
heterotrophic respiration
ID MICHAELIS-MENTEN KINETICS; EARTH SYSTEM MODELS; ORGANIC-CARBON; USE
EFFICIENCY; RESPIRATION; NITROGEN; ECOSYSTEMS; SUBSTRATE; STOICHIOMETRY;
ASSIMILATION
AB Soil carbon dynamics of terrestrial ecosystems play a significant role in the global carbon cycle. Microbial-based decomposition models have seen much growth recently for quantifying this role, yet dormancy as a common strategy used by microorganisms has not usually been represented and tested in these models against field observations. Here we developed an explicit microbial-enzyme decomposition model and examined model performance with and without representation of microbial dormancy at six temperate forest sites of different forest types. We then extrapolated the model to global temperate forest ecosystems to investigate biogeochemical controls on soil heterotrophic respiration and microbial dormancy dynamics at different temporal-spatial scales. The dormancy model consistently produced better match with field-observed heterotrophic soil CO2 efflux (R-H) than the no dormancy model. Our regional modeling results further indicated that models with dormancy were able to produce more realistic magnitude of microbial biomass (<2% of soil organic carbon) and soil R-H (7.52.4PgCyr(-1)). Spatial correlation analysis showed that soil organic carbon content was the dominating factor (correlation coefficient=0.4-0.6) in the simulated spatial pattern of soil R-H with both models. In contrast to strong temporal and local controls of soil temperature and moisture on microbial dormancy, our modeling results showed that soil carbon-to-nitrogen ratio (C:N) was a major regulating factor at regional scales (correlation coefficient=-0.43 to -0.58), indicating scale-dependent biogeochemical controls on microbial dynamics. Our findings suggest that incorporating microbial dormancy could improve the realism of microbial-based decomposition models and enhance the integration of soil experiments and mechanistically based modeling.
C1 [He, Yujie; Zhuang, Qianlai; Liu, Yaling] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN USA.
[Yang, Jinyan] Univ Georgia, Warnell Sch Forestry & Nat Resources, Athens, GA 30602 USA.
[Yang, Jinyan] Northeast Forestry Univ, Ctr Ecol Res, Harbin, Peoples R China.
[Zhuang, Qianlai] Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA.
[Harden, Jennifer W.] US Geol Survey, 345 Middlefield Rd, Menlo Pk, CA 94025 USA.
[McGuire, Anthony D.] Univ Alaska Fairbanks, Alaska Cooperat Fish & Wildlife Res Unit, US Geol Survey, Fairbanks, AK USA.
[Wang, Gangsheng] Oak Ridge Natl Lab, Climate Change Sci Inst, Oak Ridge, TN USA.
[Wang, Gangsheng; Gu, Lianhong] Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA.
RP Zhuang, QL (reprint author), Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN USA.; Zhuang, QL (reprint author), Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA.
EM qzhuang@purdue.edu
RI Gu, Lianhong/H-8241-2014; He, Yujie/E-2514-2017
OI Gu, Lianhong/0000-0001-5756-8738; He, Yujie/0000-0001-8261-5399
FU NSF [0919331, NSF-0630319]; NASA [NASA-NNX09AI26G]; Department of Energy
[DE-FG02-08ER64599]; NSF Division of Information & Intelligent Systems
[NSF-1028291]
FX We would like to thank Xiaofeng Xu for his suggestions on an earlier
version of this manuscript and Yang Bai for his helpful information
regarding partitioning AmeriFlux data. We also would like to thank
AmeriFlux PI Dr. Beverly Law for making these long-term observations
publicly available. All data needed for reproduction of this study are
available online
(https://drive.google.com/folderview?id=0B081GsjCQ_JucnpQUGNyeU5hckk&usp
=sharing) and also upon request. This research is partly supported with
funding to Q.Z. through NSF projects (DEB-#0919331 and NSF-0630319), the
NASA Land Use and Land Cover Change program (NASA-NNX09AI26G),
Department of Energy (DE-FG02-08ER64599), and the NSF Division of
Information & Intelligent Systems (NSF-1028291). Data from analyses and
figures will be archived in the Purdue University Research Repository
and can be accessed by contacting the corresponding author (Q.Z.). Any
use of trade, firm, or product names is for descriptive purposes only
and does not imply endorsement by the U.S. Government.
NR 49
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PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-8953
EI 2169-8961
J9 J GEOPHYS RES-BIOGEO
JI J. Geophys. Res.-Biogeosci.
PD DEC
PY 2015
VL 120
IS 12
BP 2596
EP 2611
DI 10.1002/2015JG003130
PG 16
WC Environmental Sciences; Geosciences, Multidisciplinary
SC Environmental Sciences & Ecology; Geology
GA DC0WL
UT WOS:000368938500008
ER
PT J
AU Silling, S
Weckner, O
AF Silling, Stewart
Weckner, Olaf
TI PREFACE
SO JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES
LA English
DT Editorial Material
C1 [Silling, Stewart] Sandia Natl Labs, Livermore, CA 94550 USA.
[Weckner, Olaf] Boeing Co, Chicago, IL USA.
RP Silling, S (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA.
NR 0
TC 0
Z9 0
U1 3
U2 4
PU MATHEMATICAL SCIENCE PUBL
PI BERKELEY
PA UNIV CALIFORNIA, DEPT MATHEMATICS, BERKELEY, CA 94720-3840 USA
SN 1559-3959
J9 J MECH MATER STRUCT
JI J. Mech. Mater. Struct.
PD DEC
PY 2015
VL 10
IS 5
SI SI
BP 537
EP 537
DI 10.2140/jomms.2015.10.537
PG 1
WC Materials Science, Multidisciplinary; Mechanics
SC Materials Science; Mechanics
GA DC0NL
UT WOS:000368914200001
ER
PT J
AU Mitchell, JA
Silling, SA
Littlewood, DJ
AF Mitchell, John A.
Silling, Stewart A.
Littlewood, David J.
TI A POSITION-AWARE LINEAR SOLID CONSTITUTIVE MODEL FOR PERIDYNAMICS
SO JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES
LA English
DT Article; Proceedings Paper
CT Peridynamic Theory symposium
CY JUN, 2014
CL Michigan State Univ, East Lansing, MI
HO Michigan State Univ
DE peridynamics; PALS; ordinary state; lps; surface effects; elastic model;
nonlocal; integral equations
ID MECHANICS
AB A position-aware linear solid (PALS) peridynamic constitutive model is proposed for isotropic elastic solids. The PALS model addresses problems that arise, in ordinary peridynamic material models such as the linear peridynamic solid (LPS), due to incomplete neighborhoods near the surface of a body. Improved model behavior in the vicinity of free surfaces is achieved through the application of two influence functions that correspond, respectively, to the volumetric and deviatoric parts of the deformation. The model is position-aware in that the influence functions vary over the body and reflect the proximity of each material point to free surfaces. Demonstration calculations on simple benchmark problems show a sharp reduction in error relative to the LPS model.
C1 [Mitchell, John A.; Silling, Stewart A.; Littlewood, David J.] Sandia Natl Labs, Multiscale Sci, POB 5800,MS 1322, Albuquerque, NM 87185 USA.
RP Mitchell, JA (reprint author), Sandia Natl Labs, Multiscale Sci, POB 5800,MS 1322, Albuquerque, NM 87185 USA.
EM jamitch@sandia.gov; sasilli@sandia.gov; djlittl@sandia.gov
FU Laboratory-Directed Research and Development (LDRD) project at Sandia
National Laboratories; United States Department of Energy
[DE-AC04-94AL85000]
FX This work was supported through a Laboratory-Directed Research and
Development (LDRD) project at Sandia National Laboratories. The authors
would like to thank Dan Turner, Pablo Seleson, Mike Parks, and Max
Gunzburger for helpful discussions during the course of this work.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the United States Department of Energy
under Contract DE-AC04-94AL85000.
NR 18
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U1 3
U2 8
PU MATHEMATICAL SCIENCE PUBL
PI BERKELEY
PA UNIV CALIFORNIA, DEPT MATHEMATICS, BERKELEY, CA 94720-3840 USA
SN 1559-3959
J9 J MECH MATER STRUCT
JI J. Mech. Mater. Struct.
PD DEC
PY 2015
VL 10
IS 5
SI SI
BP 539
EP 557
DI 10.2140/jomms.2015.10.539
PG 19
WC Materials Science, Multidisciplinary; Mechanics
SC Materials Science; Mechanics
GA DC0NL
UT WOS:000368914200002
ER
PT J
AU Turner, DZ
Waanders, BGV
Parks, ML
AF Turner, Daniel Z.
Waanders, Bart G. van Bloemen
Parks, Michael L.
TI INVERSE PROBLEMS IN HETEROGENEOUS AND FRACTURED MEDIA USING PERIDYNAMICS
SO JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES
LA English
DT Article; Proceedings Paper
CT Peridynamic Theory symposium
CY JUN, 2014
CL Michigan State Univ, East Lansing, MI
HO Michigan State Univ
DE peridynamics; fractured media; inverse problems; digital image
correlation
ID DIGITAL-IMAGE-CORRELATION; NONLOCAL VECTOR CALCULUS; ELASTICITY THEORY;
NAVIER EQUATION; MECHANICS; MODEL
AB The following work presents an adjoint-based methodology for solving inverse problems in heterogeneous and fractured media using state-based peridynamics. We show that the inner product involving the peridynamic operators is self-adjoint. The proposed method is illustrated for several numerical examples with constant and spatially varying material parameters as well as in the context of fractures. We also present a framework for obtaining material parameters by integrating digital image correlation (DIC) with inverse analysis. This framework is demonstrated by evaluating the bulk and shear moduli for a sample of nuclear graphite using digital photographs taken during the experiment. The resulting measured values correspond well with other results reported in the literature. Lastly, we show that this framework can be used to determine the load state given observed measurements of a crack opening. This type of analysis has many applications in characterizing subsurface stress-state conditions given fracture patterns in cores of geologic material.
C1 [Turner, Daniel Z.] Sandia Natl Labs, Multiscale Sci, POB 5800, Albuquerque, NM 87185 USA.
[Waanders, Bart G. van Bloemen] Sandia Natl Labs, Optimizat & UQ, Albuquerque, NM 87185 USA.
[Parks, Michael L.] Sandia Natl Labs, Computat Math, Albuquerque, NM 87185 USA.
RP Turner, DZ (reprint author), Sandia Natl Labs, Multiscale Sci, POB 5800, Albuquerque, NM 87185 USA.
EM dzturne@sandia.gov; bartv@sandia.gov; mlparks@sandia.gov
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]; Institute for Structural Engineering at
Stellenbosch University
FX Sandia National Laboratories is a multiprogram laboratory managed and
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the U.S. Department of Energy's National Nuclear
Security Administration under contract DE-AC04-94AL85000.; The authors
would like to thank Thorsten Becker, Johan Conradie, and Matt Molteno
from Stellenbosch University for their assistance with the nuclear
graphite experiments. Portions of this work were funded by the Institute
for Structural Engineering at Stellenbosch University.
NR 21
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U1 5
U2 8
PU MATHEMATICAL SCIENCE PUBL
PI BERKELEY
PA UNIV CALIFORNIA, DEPT MATHEMATICS, BERKELEY, CA 94720-3840 USA
SN 1559-3959
J9 J MECH MATER STRUCT
JI J. Mech. Mater. Struct.
PD DEC
PY 2015
VL 10
IS 5
SI SI
BP 573
EP 590
DI 10.2140/jomms.2015.10.573
PG 18
WC Materials Science, Multidisciplinary; Mechanics
SC Materials Science; Mechanics
GA DC0NL
UT WOS:000368914200004
ER
PT J
AU Silling, SA
Littlewood, DJ
Seleson, P
AF Silling, Stewart A.
Littlewood, David J.
Seleson, Pablo
TI VARIABLE HORIZON IN A PERIDYNAMIC MEDIUM
SO JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES
LA English
DT Article; Proceedings Paper
CT Peridynamic Theory symposium
CY JUN, 2014
CL Michigan State Univ, East Lansing, MI
HO Michigan State Univ
DE elasticity; nonlocality; local-nonlocal coupling; peridynamics
ID CLASSICAL ELASTICITY; SOLID MECHANICS; CONVERGENCE; DIFFUSION; FRACTURE;
STATES
AB A notion of material homogeneity is proposed for peridynamic bodies with variable horizon but constant bulk properties. A relation is derived that scales the force state according to the position-dependent horizon while keeping the bulk properties unchanged. Using this scaling relation, if the horizon depends on position, artifacts called ghost forces may arise in a body under a homogeneous deformation. These artifacts depend on the second derivative of the horizon and can be reduced by employing a modified equilibrium equation using a new quantity called the partial stress. Bodies with piecewise constant horizon can be modeled without ghost forces by using a simpler technique called a splice. As a limiting case of zero horizon, both the partial stress and splice techniques can be used to achieve local-nonlocal coupling. Computational examples, including dynamic fracture in a one-dimensional model with local-nonlocal coupling, illustrate the methods.
C1 [Silling, Stewart A.; Littlewood, David J.] Sandia Natl Labs, Multiscale Sci Dept, POB 5800,MS 1322, Albuquerque, NM 87185 USA.
[Seleson, Pablo] Oak Ridge Natl Lab, Comp Sci & Math Div, POB 2008, Oak Ridge, TN 37831 USA.
RP Silling, SA (reprint author), Sandia Natl Labs, Multiscale Sci Dept, POB 5800,MS 1322, Albuquerque, NM 87185 USA.
EM sasilli@sandia.gov; djlittl@sandia.gov; selesonpd@ornl.gov
OI Seleson, Pablo/0000-0003-3279-4231
FU United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the United States Department of Energy's
National Nuclear Security Administration under contract
DE-AC04-94AL85000.
NR 29
TC 1
Z9 1
U1 2
U2 9
PU MATHEMATICAL SCIENCE PUBL
PI BERKELEY
PA UNIV CALIFORNIA, DEPT MATHEMATICS, BERKELEY, CA 94720-3840 USA
SN 1559-3959
J9 J MECH MATER STRUCT
JI J. Mech. Mater. Struct.
PD DEC
PY 2015
VL 10
IS 5
SI SI
BP 591
EP 612
DI 10.2140/jomms.2015.10.591
PG 22
WC Materials Science, Multidisciplinary; Mechanics
SC Materials Science; Mechanics
GA DC0NL
UT WOS:000368914200005
ER
PT J
AU Beck, MW
Hagy, JD
Murrell, MC
AF Beck, Marcus W.
Hagy, James D., III
Murrell, Michael C.
TI Improving estimates of ecosystem metabolism by reducing effects of tidal
advection on dissolved oxygen time series
SO LIMNOLOGY AND OCEANOGRAPHY-METHODS
LA English
DT Article
ID LAKE METABOLISM; US ESTUARIES; EUTROPHICATION; VARIABILITY; RESPIRATION;
DYNAMICS; DRIVERS; SYSTEM; BAY
AB In aquatic systems, time series of dissolved oxygen (DO) have been used to compute estimates of ecosystem metabolism. Central to this open-water method is the assumption that the DO time series is a Lagrangian specification of the flow field. However, most DO time series are collected at fixed locations, such that changes in DO are assumed to reflect metabolism and that effects of advection or mixing are negligible. A weighted regression model was applied to remove variability in DO time series from tides, thereby helping to partially relax this assumption and improve metabolism estimates. The method offers a distinct advantage over traditional deconvulution methods by targeting the periodicity of the tidal component while preserving the true biological signal. The model was first applied to simulated DO time series with specified biological and physical characteristics, and then applied to 1 yr of continuous monitoring data from four stations within the National Estuarine Research Reserve System. The correlation of DO and metabolism estimates with tides was greatly reduced after using weighted regression. The model was especially effective when the magnitude of tidal influence was high and correlations between tidal change and the solar cycle were low at the time scales of interest. The model was less robust when tides and the solar cycle were correlated for protracted periods. By reducing the effects of physical transport on metabolism estimates, there may be increased potential to empirically relate metabolic rates to causal factors on timescales of several days to several weeks.
C1 [Beck, Marcus W.] USEPA Natl Hlth & Environm Effects Res Lab, Gulf Ecol Div, ORISE Res Participat Program, Gulf Breeze, FL USA.
[Hagy, James D., III; Murrell, Michael C.] USEPA Natl Hlth & Environm Effects Res Lab, Gulf Ecol Div, Gulf Breeze, FL USA.
RP Beck, MW (reprint author), USEPA Natl Hlth & Environm Effects Res Lab, Gulf Ecol Div, ORISE Res Participat Program, Gulf Breeze, FL USA.
EM beck.marcus@epa.gov
NR 32
TC 1
Z9 1
U1 3
U2 9
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1541-5856
J9 LIMNOL OCEANOGR-METH
JI Limnol. Oceanogr. Meth.
PD DEC
PY 2015
VL 13
IS 12
BP 731
EP 745
DI 10.1002/lom3.10062
PG 15
WC Limnology; Oceanography
SC Marine & Freshwater Biology; Oceanography
GA DB9CV
UT WOS:000368814800006
ER
PT J
AU DeVore, MS
Stich, DG
Keller, AM
Cleyrat, C
Phipps, ME
Hollingsworth, JA
Lidke, DS
Wilson, BS
Goodwin, PM
Werner, JH
AF DeVore, M. S.
Stich, D. G.
Keller, A. M.
Cleyrat, C.
Phipps, M. E.
Hollingsworth, J. A.
Lidke, D. S.
Wilson, B. S.
Goodwin, P. M.
Werner, J. H.
TI Note: Time-gated 3D single quantum dot tracking with simultaneous
spinning disk imaging
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID 3-DIMENSIONAL TRACKING; PARTICLE TRACKING; FLUORESCENT PARTICLES; LIVE
CELLS; CONFOCAL MICROSCOPE; MOLECULE TRACKING; DYNAMICS; DIMENSIONS;
RESOLUTION; NANOPARTICLES
AB We describe recent upgrades to a 3D tracking microscope to include simultaneous Nipkow spinning disk imaging and time-gated single-particle tracking (SPT). Simultaneous 3D molecular tracking and spinning disk imaging enable the visualization of cellular structures and proteins around a given fluorescently labeled target molecule. The addition of photon time-gating to the SPT hardware improves signal to noise by discriminating against Raman scattering and short-lived fluorescence. In contrast to camera-based SPT, single-photon arrival times are recorded, enabling time-resolved spectroscopy (e.g., measurement of fluorescence lifetimes and photon correlations) to be performed during single molecule/particle tracking experiments. (C) 2015 AIP Publishing LLC.
C1 [DeVore, M. S.; Stich, D. G.; Keller, A. M.; Phipps, M. E.; Hollingsworth, J. A.; Goodwin, P. M.; Werner, J. H.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Mail Stop G755, Los Alamos, NM 87545 USA.
[Cleyrat, C.; Lidke, D. S.; Wilson, B. S.] Univ New Mexico, Dept Pathol, Albuquerque, NM 87131 USA.
[Cleyrat, C.; Lidke, D. S.; Wilson, B. S.] Univ New Mexico, Canc Res & Treatment Ctr, Albuquerque, NM 87131 USA.
RP Werner, JH (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Mail Stop G755, Los Alamos, NM 87545 USA.
EM jwerner@lanl.gov
RI Cleyrat, Cedric/F-1824-2016;
OI Cleyrat, Cedric/0000-0002-1928-6497; Werner, James/0000-0002-7616-8913
FU National Institutes of Health [5R01AI097154]; New Mexico Spatiotemporal
Modeling Center [P50GM0852673]; NIH [R01GM100114]; DOE Single
Investigator Small Group Research Grant [2009LANL1096]; [P50 GM065794];
[R01AI051575]
FX We acknowledge the National Institutes of Health (No. 5R01AI097154 to
J.H.W.) for support of this work. This work was performed at the Center
for Integrated Nanotechnologies, a U.S. Department of Energy, Office of
Basic Energy Sciences user facility. Collaborative efforts were also
supported by Nos. P50 GM065794 and R01AI051575 (B.S.W.), the New Mexico
Spatiotemporal Modeling Center (No. P50GM0852673) and NIH No.
R01GM100114 (D.S.L.), and a DOE Single Investigator Small Group Research
Grant No. 2009LANL1096 (J.A.H.).
NR 30
TC 0
Z9 0
U1 4
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 126102
DI 10.1063/1.4937477
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900085
PM 26724083
ER
PT J
AU Hurley, DH
Schley, RS
Khafizov, M
Wendt, BL
AF Hurley, David H.
Schley, Robert S.
Khafizov, Marat
Wendt, Brycen L.
TI Local measurement of thermal conductivity and diffusivity
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID HEAT-FLOW; BURN-UP; DEFLECTION; FILMS
AB Simultaneous measurement of local thermal diffusivity and conductivity is demonstrated on a range of ceramic samples. This was accomplished by measuring the temperature field spatial profile of samples excited by an amplitude modulated continuous wave laser beam. A thin gold film is applied to the samples to ensure strong optical absorption and to establish a second boundary condition that introduces an expression containing the substrate thermal conductivity. The diffusivity and conductivity are obtained by comparing the measured phase profile of the temperature field to a continuum based model. A sensitivity analysis is used to identify the optimal film thickness for extracting the both substrate conductivity and diffusivity. Proof of principle studies were conducted on a range of samples having thermal properties that are representatives of current and advanced accident tolerant nuclear fuels. It is shown that by including the Kapitza resistance as an additional fitting parameter, the measured conductivity and diffusivity of all the samples considered agreed closely with the literature values. A distinguishing feature of this technique is that it does not require a priori knowledge of the optical spot size which greatly increases measurement reliability and reproducibility. (C) 2015 AIP Publishing LLC.
C1 [Hurley, David H.; Schley, Robert S.] Idaho Natl Lab, Mat Sci & Engn Dept, POB 1625, Idaho Falls, ID 83415 USA.
[Khafizov, Marat] Ohio State Univ, Mech & Aerosp Engn Dept, Columbus, OH 43210 USA.
[Wendt, Brycen L.] Idaho State Univ, Nucl Sci & Engn, Pocatello, ID 83209 USA.
RP Hurley, DH (reprint author), Idaho Natl Lab, Mat Sci & Engn Dept, POB 1625, Idaho Falls, ID 83415 USA.
RI Schley, Robert/B-9124-2017; Khafizov, Marat/B-3744-2012
OI Schley, Robert/0000-0001-8907-6535; Khafizov, Marat/0000-0001-8171-3528
NR 20
TC 1
Z9 1
U1 5
U2 24
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 123901
DI 10.1063/1.4936213
PG 8
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900043
PM 26724041
ER
PT J
AU Macrander, AT
AF Macrander, Albert T.
TI Editorial: Reflections on my tenure as Editor-in-Chief of Review of
Scientific Instruments
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Editorial Material
C1 [Macrander, Albert T.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
RP Macrander, AT (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 1
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 120401
DI 10.1063/1.4939140
PG 1
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900001
PM 26723998
ER
PT J
AU Makowska, MG
Kuhn, LT
Cleemann, LN
Lauridsen, EM
Bilheux, HZ
Molaison, JJ
Santodonato, LJ
Tremsin, AS
Grosse, M
Morgano, M
Kabra, S
Strobl, M
AF Makowska, Malgorzata G.
Kuhn, Luise Theil
Cleemann, Lars N.
Lauridsen, Erik M.
Bilheux, Hassina Z.
Molaison, Jamie J.
Santodonato, Louis J.
Tremsin, Anton S.
Grosse, Mirco
Morgano, Manuel
Kabra, Saurabh
Strobl, Markus
TI Flexible sample environment for high resolution neutron imaging at high
temperatures in controlled atmosphere
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID OXIDE FUEL-CELLS; ZIRCONIUM ALLOYS; STEAM OXIDATION; TRANSMISSION;
ENERGY; RADIOGRAPHY; HYDROGEN; TRENDS; SOFCS
AB High material penetration by neutrons allows for experiments using sophisticated sample environments providing complex conditions. Thus, neutron imaging holds potential for performing in situ nondestructive measurements on large samples or even full technological systems, which are not possible with any other technique. This paper presents a new sample environment for in situ high resolution neutron imaging experiments at temperatures from room temperature up to 1100 degrees C and/or using controllable flow of reactive atmospheres. The design also offers the possibility to directly combine imaging with diffraction measurements. Design, special features, and specification of the furnace are described. In addition, examples of experiments successfully performed at various neutron facilities with the furnace, as well as examples of possible applications are presented. This covers a broad field of research from fundamental to technological investigations of various types of materials and components. (C) 2015 AIP Publishing LLC.
C1 [Makowska, Malgorzata G.; Kuhn, Luise Theil; Cleemann, Lars N.] Tech Univ Denmark, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark.
[Makowska, Malgorzata G.; Strobl, Markus] European Spallat Source ESS AB, SE-22100 Lund, Sweden.
[Lauridsen, Erik M.] Xnovo Technol ApS, DK-4600 Koge, Denmark.
[Bilheux, Hassina Z.; Molaison, Jamie J.; Santodonato, Louis J.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Tremsin, Anton S.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Grosse, Mirco] Karlsruhe Inst Technol, Inst Appl Mat Res, DE-76021 Karlsruhe, Germany.
[Morgano, Manuel] Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
[Kabra, Saurabh] Rutherford Appleton Lab, ISIS, Chilton OX11 0QX, England.
RP Makowska, MG (reprint author), Tech Univ Denmark, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark.
EM malg@dtu.dk
RI Cleemann, Lars/I-2801-2016; Santodonato, Louis/A-9523-2015; Bilheux,
Hassina/H-4289-2012;
OI Cleemann, Lars/0000-0001-5840-7477; Santodonato,
Louis/0000-0002-4600-685X; Bilheux, Hassina/0000-0001-8574-2449;
Makowska, Malgorzata/0000-0002-1767-6176; Lauridsen,
Erik/0000-0002-4923-8373; Kuhn, Luise Theil/0000-0002-8403-1319
FU DanScatt; Scientific User Facilities Division, Office of Basic Energy
Sciences, U.S. Department of Energy
FX The authors would like to acknowledge John Jonson, Johnny Egtved
Jorgensen, Jan Skov Andersen, Troels Feld for help in designing and
building the furnace; Dr. Dirk Wallacher for his advises regarding
furnace design and DanScatt for financial support. A portion of research
performed at ORNL's Spallation Neutron Source was sponsored by the
Scientific User Facilities Division, Office of Basic Energy Sciences,
U.S. Department of Energy.
NR 34
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U1 0
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 125109
DI 10.1063/1.4937615
PG 9
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900077
PM 26724075
ER
PT J
AU Rinderknecht, HG
Rojas-Herrera, J
Zylstra, AB
Frenje, JA
Johnson, MG
Sio, H
Sinenian, N
Rosenberg, MJ
Li, CK
Seguin, FH
Petrasso, RD
Filkins, T
Steidle, JA
Steidle, JA
Traynor, N
Freeman, C
AF Rinderknecht, H. G.
Rojas-Herrera, J.
Zylstra, A. B.
Frenje, J. A.
Johnson, M. Gatu
Sio, H.
Sinenian, N.
Rosenberg, M. J.
Li, C. K.
Seguin, F. H.
Petrasso, R. D.
Filkins, T.
Steidle, Jeffrey A.
Steidle, Jessica A.
Traynor, N.
Freeman, C.
TI Impact of x-ray dose on track formation and data analysis for
CR-39-based proton diagnostics
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID NATIONAL IGNITION FACILITY; INERTIAL-FUSION IMPLOSIONS; CR-39; OMEGA;
DETECTORS; SPECTRA; SYSTEM
AB The nuclear track detector CR-39 is used extensively for charged particle diagnosis, in particular proton spectroscopy, at inertial confinement fusion facilities. These detectors can absorb x-ray doses from the experiments in the order of 1-100 Gy, the effects of which are not accounted for in the previous detector calibrations. X-ray dose absorbed in the CR-39 has previously been shown to affect the track size of alpha particles in the detector, primarily due to a measured reduction in the material bulk etch rate [Rojas-Herrera et al., Rev. Sci. Instrum. 86, 033501 (2015)]. Similar to the previous findings for alpha particles, protons with energies in the range 0.5-9.1 MeV are shown to produce tracks that are systematically smaller as a function of the absorbed x-ray dose in the CR-39. The reduction of track size due to x-ray dose is found to diminish with time between exposure and etching if the CR-39 is stored at ambient temperature, and complete recovery is observed after two weeks. The impact of this effect on the analysis of data from existing CR-39-based proton diagnostics on OMEGA and the National Ignition Facility is evaluated and best practices are proposed for cases in which the effect of x rays is significant. (C) 2015 AIP Publishing LLC.
C1 [Rinderknecht, H. G.; Rojas-Herrera, J.; Zylstra, A. B.; Frenje, J. A.; Johnson, M. Gatu; Sio, H.; Sinenian, N.; Rosenberg, M. J.; Li, C. K.; Seguin, F. H.; Petrasso, R. D.] MIT, Cambridge, MA 02139 USA.
[Filkins, T.; Steidle, Jessica A.; Traynor, N.; Freeman, C.] SUNY Coll Geneseo, Geneseo, NY 14454 USA.
[Steidle, Jeffrey A.] Rochester Inst Technol, Rochester, NY 14623 USA.
RP Rinderknecht, HG (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM rinderknecht1@llnl.gov
OI /0000-0003-4969-5571
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; U.S. DoE [DE-FG52-09NA29553]; LLNL [B580243]; LLE
[414090-G]; Fusion Science Center at the University of Rochester
[415023-G]; National Laser Users Facility [DE-NA0000877]
FX The authors thank the engineering and operations staff at NIF, LLE, and
MIT for their support. This work was performed under the auspices of the
U.S. Department of Energy by Lawrence Livermore National Laboratory
under Contract No. DE-AC52-07NA27344. This work was done in part for H.
Rinderknecht's Ph.D. thesis and was supported in part by the U.S. DoE
(No. DE-FG52-09NA29553), LLNL (No. B580243), LLE (No. 414090-G), the
Fusion Science Center at the University of Rochester (No. 415023-G), and
the National Laser Users Facility (No. DE-NA0000877).
NR 44
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U1 1
U2 5
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 123511
DI 10.1063/1.4938161
PG 10
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900033
PM 26724031
ER
PT J
AU Scotti, F
Soukhanovskii, VA
AF Scotti, F.
Soukhanovskii, V. A.
TI A dual wavelength imaging system for plasma-surface interaction studies
on the National Spherical Torus Experiment Upgrade
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID ALCATOR C-MOD; NSTX; TEMPERATURE; TURBULENCE; DIVERTOR; TOKAMAK; HELIUM;
CAMERA
AB A two-channel spectral imaging system based on a charge injection device radiation-hardened intensified camera was built for studies of plasma-surface interactions on divertor plasma facing components in the National Spherical Torus Experiment Upgrade ( NSTX-U) tokamak. By means of commercially available mechanically referenced optical components, the two-wavelength setup images the light from the plasma, relayed by a fiber optic bundle, at two different wavelengths side-by-side on the same detector. Remotely controlled filter wheels are used for narrow bandpass and neutral density filters on each optical path allowing for simultaneous imaging of emission at wavelengths differing in brightness up to 3 orders of magnitude. Applications on NSTX-U will include the measurement of impurity influxes in the lower divertor strike point region and the imaging of plasma-material interaction on the head of the surface analysis probe MAPP ( Material Analysis and Particle Probe). The diagnostic setup and initial results from its application on the lithium tokamak experiment are presented. (C) 2015 AIP Publishing LLC.
C1 [Scotti, F.; Soukhanovskii, V. A.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Scotti, F (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
FU U.S. DOE [DE-AC02-09CH11466, DE-AC52-07NA27344]
FX The authors would like to thank Dr. R. E. Bell and A. L. Roquemore for
useful discussions, Dr. S. L. Allen, Dr. M. E. Fenstermacher, Dr. B.
Stratton, and Dr. R. Kaita for diagnostic support, Professor J. P.
Allain for useful discussions and MAPP support, A. Brereton for
engineering drawings, and Dr. R. Majeski, Dr. J. Schmitt, D. Boyle, M.
Lucia, and the rest of the LTX Team for help in the setup and for LTX
operation. The digital data for this paper can be found in
http://arks.princeton.edu/ark:/88435/dsp018p58pg29j. This work was
supported by U.S. DOE Contract Nos. DE-AC02-09CH11466 and
DE-AC52-07NA27344.
NR 35
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U1 4
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 123103
DI 10.1063/1.4935609
PG 10
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900004
PM 26724002
ER
PT J
AU Simpson, R
Christensen, K
Danly, C
Fatherley, VE
Fittinghoff, D
Grim, GP
Izumi, N
Jedlovec, D
Merrill, FE
Skulina, K
Volegov, P
Wilde, C
AF Simpson, R.
Christensen, K.
Danly, C.
Fatherley, V. E.
Fittinghoff, D.
Grim, G. P.
Izumi, N.
Jedlovec, D.
Merrill, F. E.
Skulina, K.
Volegov, P.
Wilde, C.
TI Demonstration of a time-integrated short line of sight neutron imaging
system for inertial confinement fusion
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID RADIOGRAPHY; PLATE
AB The Neutron Imaging System (NIS) is an important diagnostic for understanding implosions of deuterium-tritium capsules at the National Ignition Facility. While the detectors for the existing system must be positioned 28 m from the source to produce sufficient imaging magnification and resolution, recent testing of a new short line of sight neutron imaging system has shown sufficient resolution to allow reconstruction of the source image with quality similar to that of the existing NIS on a 11.6 m line of sight. The new system used the existing pinhole aperture array and a stack of detectors composed of 2 mm thick high-density polyethylene converter material followed by an image plate. In these detectors, neutrons enter the converter material and interact with protons, which recoil and deposit energy within the thin active layer of the image plate through ionization losses. The described system produces time-integrated images for all neutron energies passing through the pinhole. We present details of the measurement scheme for this novel technique to produce energy-integrated neutron images as well as source reconstruction results from recent experiments at NIF. (C) 2015 AIP Publishing LLC.
C1 [Simpson, R.; Danly, C.; Fatherley, V. E.; Merrill, F. E.; Volegov, P.; Wilde, C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Christensen, K.; Fittinghoff, D.; Grim, G. P.; Izumi, N.; Jedlovec, D.; Skulina, K.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Simpson, R (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
EM raspberry@lanl.gov
RI IZUMI, Nobuhiko/J-8487-2016
OI IZUMI, Nobuhiko/0000-0003-1114-597X
FU U.S. Department of Energy
FX Additional credit goes to the dedicated staff and technicians of NIF
including Lee Caldeira and Gary Stone, whose hard work and operational
expertise provided the data that are shown here. This work has been
performed under the auspices of the U.S. Department of Energy for NNSA
Campaign 10 (Inertial Confinement Fusion) with Steve Batha as program
manager.
NR 11
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PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 125112
DI 10.1063/1.4938543
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900080
PM 26724078
ER
PT J
AU Stern, I
Chisholm, AA
Hoskins, J
Sikivie, P
Sullivan, NS
Tanner, DB
Carosi, G
van Bibber, K
AF Stern, I.
Chisholm, A. A.
Hoskins, J.
Sikivie, P.
Sullivan, N. S.
Tanner, D. B.
Carosi, G.
van Bibber, K.
TI Cavity design for high-frequency axion dark matter detectors
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID INVISIBLE-AXION; HARMLESS AXION; CP INVARIANCE; SEARCHES
AB In an effort to extend the usefulness of microwave cavity detectors to higher axion masses, above similar to 8 mu eV (similar to 2 GHz), a numerical trade study of cavities was conducted to investigate the merit of using variable periodic post arrays and regulating vane designs for higher-frequency searches. The results show that both designs could be used to develop resonant cavities for high-mass axion searches. Multiple configurations of both methods obtained the scanning sensitivity equivalent to approximately 4 coherently coupled cavities with a single tuning rod. (C) 2015 AIP Publishing LLC.
C1 [Stern, I.; Chisholm, A. A.; Hoskins, J.; Sikivie, P.; Sullivan, N. S.; Tanner, D. B.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Carosi, G.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[van Bibber, K.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA.
RP Stern, I (reprint author), Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
OI Stern, Ian/0000-0002-1166-465X
FU U.S. Department of Defense through the National Defense Science and
Engineering Graduate Fellowship Program; National Aeronautics and Space
Administration through the Florida Space Research Program; Department of
Energy at the University of Florida [DE-SC0010280]; Department of Energy
at Lawrence Livermore National Laboratory [DEAC52-07NA27344]; National
Science Foundation at the University of California Berkeley
[PHY-1306729]
FX I.S. acknowledges support by the U.S. Department of Defense through the
National Defense Science and Engineering Graduate Fellowship Program and
the National Aeronautics and Space Administration through the Florida
Space Research Program. This work was supported in part by the
Department of Energy under Grant No. DE-SC0010280 at the University of
Florida and under Contract No. DEAC52-07NA27344 at Lawrence Livermore
National Laboratory, and in part by the National Science Foundation
under Grant No. PHY-1306729 at the University of California Berkeley.
NR 31
TC 0
Z9 0
U1 1
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 123305
DI 10.1063/1.4938164
PG 10
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900022
PM 26724020
ER
PT J
AU Torikachvili, MS
Kim, SK
Colombier, E
Bud'ko, SL
Canfield, PC
AF Torikachvili, M. S.
Kim, S. K.
Colombier, E.
Bud'ko, S. L.
Canfield, P. C.
TI Solidification and loss of hydrostaticity in liquid media used for
pressure measurements
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID LIMITS; CELL; TRANSITIONS
AB We carried out a study of the pressure dependence of the solidification temperature in nine pressure transmitting media that are liquid at ambient temperature, under pressures up to 2.3 GPa. These fluids are 1:1 isopentane/n-pentane, 4:6 light mineral oil/n-pentane, 1:1 isoamyl alcohol/n-pentane, 4:1 methanol/ethanol, 1:1 FC72/FC84 (Fluorinert), Daphne 7373, isopentane, and Dow Corning PMX silicone oils 200 and 60 000 cS. We relied on the high sensitivity of the electrical resistivity of Ba(Fe1-xRux)(2)As-2 single crystals to the freezing of the pressure media and cross-checked with corresponding anomalies observed in the resistance of the manganin coil that served as the ambient temperature resistive manometer. In addition to establishing the temperature-pressure line separating the liquid (hydrostatic) and frozen (non-hydrostatic) phases, these data permit rough estimates of the freezing pressure of these media at ambient temperature. This pressure establishes the extreme limit for the medium to be considered hydrostatic. For higher applied pressures, the medium has to be treated as non-hydrostatic. (C) 2015 AIP Publishing LLC.
C1 [Torikachvili, M. S.] San Diego State Univ, Dept Phys, San Diego, CA 92182 USA.
[Kim, S. K.; Colombier, E.; Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Kim, S. K.; Colombier, E.; Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Colombier, E (reprint author), Netceler, 5 Ave Gare, F-26300 Alixan, France.
FU NSF [DMR-0805335]; U.S. Department of Energy, Basic Energy Sciences,
Division of Materials Sciences and Engineering [DE-AC02-07CH11358]
FX The authors are grateful to Dr. Alexander Thaler for participating in
the synthesis of the samples for this research. Support from NSF Grant
No. DMR-0805335 for the work at SDSU is gratefully acknowledged. Work at
the Ames Laboratory was supported by the U.S. Department of Energy,
Basic Energy Sciences, Division of Materials Sciences and Engineering
under Contract No. DE-AC02-07CH11358.
NR 24
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U1 9
U2 14
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 123904
DI 10.1063/1.4937478
PG 7
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900046
PM 26724044
ER
PT J
AU Yashchuk, VV
Fischer, PJ
Chan, ER
Conley, R
McKinney, WR
Artemiev, NA
Bouet, N
Cabrini, S
Calafiore, G
Lacey, I
Peroz, C
Babin, S
AF Yashchuk, V. V.
Fischer, P. J.
Chan, E. R.
Conley, R.
McKinney, W. R.
Artemiev, N. A.
Bouet, N.
Cabrini, S.
Calafiore, G.
Lacey, I.
Peroz, C.
Babin, S.
TI Binary pseudo-random patterned structures for modulation transfer
function calibration and resolution characterization of a full-field
transmission soft x-ray microscope
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID CROSS-CORRELATION CHOPPER; UNIFORMLY REDUNDANT ARRAYS; OF-FLIGHT
SPECTROMETER; POWER
AB We present a modulation transfer function (MTF) calibration method based on binary pseudo-random (BPR) one-dimensional sequences and two-dimensional arrays as an effective method for spectral characterization in the spatial frequency domain of a broad variety of metrology instrumentation, including interferometric microscopes, scatterometers, phase shifting Fizeau interferometers, scanning and transmission electron microscopes, and at this time, x-ray microscopes. The inherent power spectral density of BPR gratings and arrays, which has a deterministic white-noise-like character, allows a direct determination of the MTF with a uniform sensitivity over the entire spatial frequency range and field of view of an instrument. We demonstrate the MTF calibration and resolution characterization over the full field of a transmission soft x-ray microscope using a BPR multilayer (ML) test sample with 2.8 nm fundamental layer thickness. We show that beyond providing a direct measurement of the microscope's MTF, tests with the BPRML sample can be used to fine tune the instrument's focal distance. Our results confirm the universality of the method that makes it applicable to a large variety of metrology instrumentation with spatial wavelength bandwidths from a few nanometers to hundreds of millimeters. (C) 2015 AIP Publishing LLC.
C1 [Yashchuk, V. V.; Chan, E. R.; McKinney, W. R.; Artemiev, N. A.; Lacey, I.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Fischer, P. J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
[Fischer, P. J.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 94056 USA.
[Conley, R.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Conley, R.; Bouet, N.] Brookhaven Natl Lab, Natl Synchrotron Light Source 2, Upton, NY 11973 USA.
[McKinney, W. R.] Diablo Valley Coll, Pleasant Hill, CA 94523 USA.
[Artemiev, N. A.] KLA Tencor Corp, Milpitas, CA 95035 USA.
[Cabrini, S.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Calafiore, G.; Peroz, C.; Babin, S.] aBeam Technol Inc, Hayward, CA 94541 USA.
RP Yashchuk, VV (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
EM VVYashchuk@lbl.gov
RI Fischer, Peter/A-3020-2010;
OI Fischer, Peter/0000-0002-9824-9343; Bouet, Nathalie/0000-0002-5816-9429;
Artemiev, Nikolay/0000-0002-0251-545X; McKinney,
Wayne/0000-0003-2586-3139
FU UC Office of the President, Proof of Concept Grant [268826]; U.S.
Department of Energy Office of Science, Office of Basic Energy Sciences
Energy Small Business Technology Transfer (STTR) program [DE-SC0011352];
Office of Science, Office of Basic Energy Sciences, Material Science
Division of the U.S. Department of Energy at Lawrence Berkeley National
Laboratory [DE-AC02-05CH11231]; U.S. Department of Energy
[DE-AC02-98CH10886, DE-AC02-06CH11357]; Office of Science, Office of
Basic Energy Sciences, Materials Sciences and Engineering Division of
the U.S. Department of Energy [DE-AC02-05-CH11231]; Leading Foreign
Research Institute Recruitment Program through the National Research
Foundation of Korea (NRF) - Ministry of Education, Science, and
Technology (MEST) [2012K1A4A3053565]; United States Government
FX The authors are grateful to David Susnitzky, Mark Izquierdo, and Udit
Sharma for the FIB/SEM sample preparation and the TEM measurements. This
work was supported in part by the UC Office of the President, Proof of
Concept Grant ID No. 268826 and by the U.S. Department of Energy Office
of Science, Office of Basic Energy Sciences Energy Small Business
Technology Transfer (STTR) program under Award No. DE-SC0011352. The
Advanced Light Source and the Molecular Foundry are supported by the
Director, Office of Science, Office of Basic Energy Sciences, Material
Science Division of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231 at Lawrence Berkeley National Laboratory. Research at
Brookhaven National Laboratory is sponsored by the U.S. Department of
Energy under Contract No. DE-AC02-98CH10886. Research at Argonne
National Laboratory is sponsored by the U.S. Department of Energy under
Contract No. DE-AC02-06CH11357. P.F. acknowledges support by the
Director, Office of Science, Office of Basic Energy Sciences, Materials
Sciences and Engineering Division of the U.S. Department of Energy under
Contract No. DE-AC02-05-CH11231 and the Leading Foreign Research
Institute Recruitment Program (Grant No. 2012K1A4A3053565) through the
National Research Foundation of Korea (NRF) funded by the Ministry of
Education, Science, and Technology (MEST).; This document was prepared
as an account of work sponsored by the United States Government. While
this document is believed to contain correct information, neither the
United States Government nor any agency thereof, nor The Regents of the
University of California, nor any of their employees, makes any
warranty, express or implied, or assumes any legal responsibility for
the accuracy, completeness, or usefulness of any information, apparatus,
product, or process disclosed, or represents that its use would not
infringe privately owned rights. Reference herein to any specific
commercial product, process, or service by its trade name, trademark,
manufacturer, or otherwise, does not necessarily constitute or imply its
endorsement, recommendation, or favor by the United States Government or
any agency thereof, or The Regents of the University of California. The
views and opinions of authors expressed herein do not necessarily state
or reflect those of the United States Government or any agency thereof
or The Regents of the University of California.
NR 52
TC 1
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U1 2
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2015
VL 86
IS 12
AR 123702
DI 10.1063/1.4936752
PG 12
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA DB6AG
UT WOS:000368594900039
PM 26724037
ER
PT J
AU Sakaguchi, K
Nagatsuma, T
Reeves, GD
Spence, HE
AF Sakaguchi, Kaori
Nagatsuma, Tsutomu
Reeves, Geoffrey D.
Spence, Harlan E.
TI Prediction of MeV electron fluxes throughout the outer radiation belt
using multivariate autoregressive models
SO SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
LA English
DT Article
ID SPACE WEATHER FORECAST; GEOSYNCHRONOUS ORBIT; LINEAR PREDICTION; KALMAN
FILTER; SOLAR-WIND; SIMULATION; INTENSITY
AB The Van Allen radiation belts surrounding the Earth are filled with MeV-energy electrons. This region poses ionizing radiation risks for spacecraft that operate within it, including those in geostationary orbit (GEO) and medium Earth orbit. To provide alerts of electron flux enhancements, 16 prediction models of the electron log-flux variation throughout the equatorial outer radiation belt as a function of the McIlwain L parameter were developed using the multivariate autoregressive model and Kalman filter. Measurements of omnidirectional 2.3 MeV electron flux from the Van Allen Probes mission as well as > 2 MeV electrons from the GOES 15 spacecraft were used as the predictors. Model explanatory parameters were selected from solar wind parameters, the electron log-flux at GEO, and geomagnetic indices. For the innermost region of the outer radiation belt, the electron flux is best predicted by using the Dst index as the sole input parameter. For the central to outermost regions, at L >= 4.8 and L >= 5.6, the electron flux is predicted most accurately by including also the solar wind velocity and then the dynamic pressure, respectively. The Dst index is the best overall single parameter for predicting at 3 <= L <= 6, while for the GEO flux prediction, the K-P index is better than Dst. A test calculation demonstrates that the model successfully predicts the timing and location of the flux maximum as much as 2 days in advance and that the electron flux decreases faster with time at higher L values, both model features consistent with the actually observed behavior.
C1 [Sakaguchi, Kaori; Nagatsuma, Tsutomu] Natl Inst Informat & Commun Technol, 4-2-1 Nukuikitamachi, Koganei, Tokyo 1848795, Japan.
[Reeves, Geoffrey D.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Spence, Harlan E.] Univ New Hampshire, Inst Study Earth Oceans & Space, Durham, NH 03824 USA.
RP Sakaguchi, K (reprint author), Natl Inst Informat & Commun Technol, 4-2-1 Nukuikitamachi, Koganei, Tokyo 1848795, Japan.
EM kaoris@nict.go.jp
RI Reeves, Geoffrey/E-8101-2011;
OI Reeves, Geoffrey/0000-0002-7985-8098; Nagatsuma,
Tsutomu/0000-0002-9334-0738
FU RBSP-ECT; JHU/APL [967399]; NASA's Prime [NAS5-01072]
FX The authors thank the RBSP-ECT team for providing the REPT data, which
are supported by RBSP-ECT funding provided by JHU/APL contract 967399
under NASA's Prime contract NAS5-01072. The solar wind parameters and
geomagnetic indices are provided from the OMNIWeb Plus
(http://omniweb.gsfc.nasa.gov) at the Space Physics Data Facility,
Goddard Space Flight Center. We thank the World Data Center for
Geomagnetism, Kyoto, operated by Data Analysis Center for Geomagnetism
and Space Magnetism at Kyoto University, for providing Dst and AE
indices. We thank the GFZ German Research Centre for Geosciences for
providing KP indices. We also thank the Space Weather
Prediction Center, NOAA, for providing the GOES satellite data.
NR 34
TC 2
Z9 2
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1542-7390
J9 SPACE WEATHER
JI Space Weather
PD DEC
PY 2015
VL 13
IS 12
BP 853
EP 867
DI 10.1002/2015SW001254
PG 15
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
GA DC3ZM
UT WOS:000369159300006
ER
PT J
AU Carmack, E
Polyakov, I
Padman, L
Fer, I
Hunke, E
Hutchings, J
Jackson, J
Kelley, D
Kwok, R
Layton, C
Melling, H
Perovich, D
Persson, O
Ruddick, B
Timmermans, ML
Toole, J
Ross, T
Vavrus, S
Winsor, P
AF Carmack, E.
Polyakov, I.
Padman, L.
Fer, I.
Hunke, E.
Hutchings, J.
Jackson, J.
Kelley, D.
Kwok, R.
Layton, C.
Melling, H.
Perovich, D.
Persson, O.
Ruddick, B.
Timmermans, M. -L.
Toole, J.
Ross, T.
Vavrus, S.
Winsor, P.
TI TOWARD QUANTIFYING THE INCREASING ROLE OF OCEANIC HEAT IN SEA ICE LOSS
IN THE NEW ARCTIC
SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
LA English
DT Article
ID HORIZONTAL DENSITY STRUCTURE; ATLANTIC WATER; BOUNDARY CURRENT; FRAM
STRAIT; INTERNAL WAVES; BEAUFORT SEA; YERMAK PLATEAU; PACIFIC WATER;
SURFACE-LAYER; CANADA BASIN
AB The loss of Arctic sea ice has emerged as a leading signal of global warming. This, together with acknowledged impacts on other components of the Earth system, has led to the term the new Arctic. Global coupled climate models predict that ice loss will continue through the twenty-first century, with implications for governance, economics, security, and global weather. A wide range in model projections reflects the complex, highly coupled interactions between the polar atmosphere, ocean, and cryosphere, including teleconnections to lower latitudes. This paper summarizes our present understanding of how heat reaches the ice base from the original sourcesinflows of Atlantic and Pacific Water, river discharge, and summer sensible heat and shortwave radiative fluxes at the ocean/ice surfaceand speculates on how such processes may change in the new Arctic. The complexity of the coupled Arctic system, and the logistic and technological challenges of working in the Arctic Ocean, require a coordinated interdisciplinary and international program that will not only improve understanding of this critical component of global climate but will also provide opportunities to develop human resources with the skills required to tackle related problems in complex climate systems. We propose a research strategy with components that include 1) improved mapping of the upper- and middepth Arctic Ocean, 2) enhanced quantification of important process, 3) expanded long-term monitoring at key heat-flux locations, and 4) development of numerical capabilities that focus on parameterization of heat-flux mechanisms and their interactions.
C1 [Carmack, E.] Fisheries & Oceans Canada, Sidney, BC, Canada.
[Carmack, E.] Univ Alaska Fairbanks, Coll Nat Sci & Math, Fairbanks, AK USA.
[Polyakov, I.] Univ Alaska Fairbanks, Int Arct Res Ctr, Fairbanks, AK USA.
[Polyakov, I.] Univ Alaska Fairbanks, Coll Nat Sci & Math, Fairbanks, AK USA.
[Padman, L.] Earth & Space Res, Corvallis, OR USA.
[Fer, I.] Univ Bergen, Inst Geophys, Bergen, Norway.
[Fer, I.] Univ Bergen, Bjerknes Ctr Climate Res, Bergen, Norway.
[Hunke, E.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Hutchings, J.] Oregon State Univ, Corvallis, OR 97331 USA.
[Jackson, J.] Hakai Inst, Heriot Bay, BC, Canada.
[Kelley, D.; Layton, C.; Ruddick, B.] Dalhousie Univ, Halifax, NS, Canada.
[Kwok, R.] CALTECH, Jet Prop Lab, Pasadena, CA USA.
[Melling, H.] Fisheries & Oceans Canada, Sidney, BC, Canada.
[Perovich, D.] US Army, Cold Reg Res & Engn Lab, Hanover, NH 03755 USA.
[Persson, O.] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
[Timmermans, M. -L.] Yale Univ, New Haven, CT USA.
[Toole, J.] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
[Vavrus, S.] Univ Wisconsin, Ctr Climat Res, Madison, WI USA.
[Winsor, P.] Univ Alaska Fairbanks, Inst Marine Sci, Fairbanks, AK USA.
RP Polyakov, I (reprint author), UAF, IARC, POB 757335, Fairbanks, AK 99775 USA.
EM igor@iarc.uaf.edu
RI Kwok, Ron/A-9762-2008;
OI Kwok, Ron/0000-0003-4051-5896; Jackson, Jennifer/0000-0002-2318-8814
FU IARC; College of Natural Science and Mathematics, University of Alaska
Fairbanks
FX The document reflects contributions and discussions from a Sydney
Chapman Chair workshop entitled "An Untersteiner Workshop: On the Role
and Consequences of Ocean Heat Flux in Sea Ice Melt," held 19-21 March
2013 at the International Arctic Research Center (IARC) at the
University of Alaska Fairbanks. We deeply appreciate the logistics
support offer by L. Hinzman, and staff of IARC, and financial support
provided by IARC and by the College of Natural Science and Mathematics,
University of Alaska Fairbanks.
NR 219
TC 11
Z9 11
U1 12
U2 38
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0003-0007
EI 1520-0477
J9 B AM METEOROL SOC
JI Bull. Amer. Meteorol. Soc.
PD DEC
PY 2015
VL 96
IS 12
BP 2079
EP 2105
DI 10.1175/BAMS-D-13-00177.1
PG 27
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA DB4RP
UT WOS:000368501100001
ER
PT J
AU Yoon, JH
Wang, SYS
Gillies, RR
Hipps, L
Kravitz, B
Rasch, PJ
AF Yoon, Jin-Ho
Wang, S. -Y. Simon
Gillies, Robert R.
Hipps, Lawrence
Kravitz, Ben
Rasch, Philip J.
TI EXTREME FIRE SEASON IN CALIFORNIA: A GLIMPSE INTO THE FUTURE?
SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
LA English
DT Article
ID WESTERN UNITED-STATES; WILDFIRE ACTIVITY; CLIMATE-CHANGE; PRECIPITATION;
DROUGHT; MODEL; ENSEMBLE; TRENDS; IMPACT; RISK
C1 [Yoon, Jin-Ho; Kravitz, Ben; Rasch, Philip J.] Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
[Wang, S. -Y. Simon; Gillies, Robert R.; Hipps, Lawrence] Utah State Univ, Utah Climate Ctr, Dept Plants Soils & Climate, Logan, UT 84322 USA.
RP Yoon, JH (reprint author), Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
RI YOON, JIN-HO/A-1672-2009
OI YOON, JIN-HO/0000-0002-4939-8078
FU Earth System Modeling program in the Office of Science/DOE; WaterSMART
grant from the Bureau of Reclamation; NSF; DOE; Department of Energy
[DEAC05-76RLO1830]
FX Research by Yoon, Kravitz, and Rasch was supported by the Earth System
Modeling program in the Office of Science/DOE and Wang, and Gillies by
the WaterSMART grant from the Bureau of Reclamation. Computation was
done at the National Energy Research Scientific Computing Center and the
Environmental Molecular Sciences Laboratory at PNNL. CESM1 is supported
by the NSF and DOE. PNNL is operated for the Department of Energy by
Battelle Memorial Institute under Contract DEAC05-76RLO1830.
NR 26
TC 5
Z9 5
U1 4
U2 14
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0003-0007
EI 1520-0477
J9 B AM METEOROL SOC
JI Bull. Amer. Meteorol. Soc.
PD DEC
PY 2015
VL 96
IS 12
BP S5
EP S9
DI 10.1175/BAMS-D-15-00114.1
PG 5
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA DB4SL
UT WOS:000368503300002
ER
PT J
AU David, MM
Cecillon, S
Warne, BM
Prestat, E
Jansson, JK
Vogel, TM
AF David, Maude M.
Cecillon, Sebastien
Warne, Brett M.
Prestat, Emmanuel
Jansson, Janet K.
Vogel, Timothy M.
TI Microbial ecology of chlorinated solvent biodegradation
SO ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID PHYLOGENETIC MICROARRAY ANALYSIS; DEHALOCOCCOIDES SP STRAIN;
VINYL-CHLORIDE REDUCTASE; BALTIC SEA SEDIMENTS; BROMODEOXYURIDINE
IMMUNOCAPTURE; GENOME SEQUENCE; COMMUNITY; BACTERIA; DECHLORINATION; RNA
AB This study focused on the microbial ecology of tetrachloroethene (PCE) degradation to trichloroethene, cis-1,2-dichloroethene and vinyl chloride to evaluate the relationship between the microbial community and the potential accumulation or degradation of these toxic metabolites. Multiple soil microcosms supplied with different organic substrates were artificially contaminated with PCE. A thymidine analogue, bromodeoxyuridine (BrdU), was added to the microcosms and incorporated into the DNA of actively replicating cells. We compared the total and active bacterial communities during the 50-day incubations by using phylogenic microarrays and 454 pyrosequencing to identify microorganisms and functional genes associated with PCE degradation to ethene. By use of this integrative approach, both the key community members and the ecological functions concomitant with complete PCE degradation could be determined, including the presence and activity of microbial community members responsible for producing hydrogen and acetate, which are critical for Dehalococcoides-mediated PCE degradation. In addition, by correlation of chemical data and phylogenic microarray data, we identified several bacteria that could potentially oxidize hydrogen. These results demonstrate that PCE degradation is dependent on some microbial community members for production of appropriate metabolites, while other members of the community compete for hydrogen in soil at low redox potentials.
C1 [David, Maude M.; Cecillon, Sebastien; Prestat, Emmanuel; Vogel, Timothy M.] Univ Lyon, Ecole Cent Lyon, Environm Microbial Genom Grp, Lab Ampere,CNRS UMR 5005, 36 Ave Guy Collongue, F-69134 Ecully, France.
[David, Maude M.; Jansson, Janet K.] Lawrence Berkeley Natl Lab, Div Earth Sci, Dept Ecol, Berkeley, CA USA.
[Warne, Brett M.] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
RP Vogel, TM (reprint author), Univ Lyon, Ecole Cent Lyon, Environm Microbial Genom Grp, Lab Ampere,CNRS UMR 5005, 36 Ave Guy Collongue, F-69134 Ecully, France.
EM timothy.vogel@ec-lyon.fr
OI Vogel, Timothy/0000-0002-9542-3246
FU Rhone-Alpes region; French National Research agency (Agence National de
la Recherche); Office of Science of the US Department of Energy
[DE-AC02-05CH11231]
FX We thank the Rhone-Alpes region for MMD financial support via doctoral
fellowship and the French National Research agency (Agence National de
la Recherche) for funding the project EVASOL. We also thank the European
Union 6th PCRT OSIRIS project. The work conducted by the Lawrence
Berkeley National Laboratory Earth Sciences Division (Laboratory
Directed Research Development) was supported in part by the Office of
Science of the US Department of Energy under Contract no.
DE-AC02-05CH11231. We thank Taylor Holliday for his help with the
visualization data program.
NR 37
TC 3
Z9 3
U1 8
U2 26
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1462-2912
EI 1462-2920
J9 ENVIRON MICROBIOL
JI Environ. Microbiol.
PD DEC
PY 2015
VL 17
IS 12
BP 4835
EP 4850
DI 10.1111/1462-2920.12413
PG 16
WC Microbiology
SC Microbiology
GA DB4BN
UT WOS:000368457800003
PM 24517489
ER
PT J
AU Nobu, MK
Narihiro, T
Tamaki, H
Qiu, YL
Sekiguchi, Y
Woyke, T
Goodwin, L
Davenport, KW
Kamagata, Y
Liu, WT
AF Nobu, Masaru K.
Narihiro, Takashi
Tamaki, Hideyuki
Qiu, Yan-Ling
Sekiguchi, Yuji
Woyke, Tanja
Goodwin, Lynne
Davenport, Karen W.
Kamagata, Yoichi
Liu, Wen-Tso
TI The genome of Syntrophorhabdus aromaticivorans strain UI provides new
insights for syntrophic aromatic compound metabolism and electron flow
SO ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID ANAEROBIC BENZOATE DEGRADATION; BACTERIUM THAUERA-AROMATICA; DEGRADES
FATTY-ACIDS; IRON-SULFUR PROTEINS; CLOSTRIDIUM-HYDROXYBENZOICUM;
GEOBACTER-METALLIREDUCENS; RHODOBACTER-CAPSULATUS; METHANOGENIC
CONSORTIA; DESULFOVIBRIO-VULGARIS; ENERGY-CONSERVATION
AB How aromatic compounds are degraded in various anaerobic ecosystems (e.g. groundwater, sediments, soils and wastewater) is currently poorly understood. Under methanogenic conditions (i.e. groundwater and wastewater treatment), syntrophic metabolizers are known to play an important role. This study explored the draft genome of Syntrophorhabdus aromaticivorans strain UI and identified the first syntrophic phenol-degrading phenylphosphate synthase (PpsAB) and phenylphosphate carboxylase (PpcABCD) and syntrophic terephthalate-degrading decarboxylase complexes. The strain UI genome also encodes benzoate degradation through hydration of the dienoyl-coenzyme A intermediate as observed in Geobacter metallireducens and Syntrophus aciditrophicus. Strain UI possesses electron transfer flavoproteins, hydrogenases and formate dehydrogenases essential for syntrophic metabolism. However, the biochemical mechanisms for electron transport between these H-2/formate-generating proteins and syntrophic substrate degradation remain unknown for many syntrophic metabolizers, including strain UI. Analysis of the strain UI genome revealed that heterodisulfide reductases (HdrABC), which are poorly understood electron transfer genes, may contribute to syntrophic H-2 and formate generation. The genome analysis further identified a putative ion-translocating ferredoxin : NADH oxidoreductase (IfoAB) that may interact with HdrABC and dissimilatory sulfite reductase gamma subunit (DsrC) to perform novel electron transfer mechanisms associated with syntrophic metabolism.
C1 [Nobu, Masaru K.; Narihiro, Takashi; Tamaki, Hideyuki; Liu, Wen-Tso] Univ Illinois, Dept Civil & Environm Engn, Urbana, IL USA.
[Narihiro, Takashi; Tamaki, Hideyuki; Kamagata, Yoichi] Natl Inst Adv Ind Sci & Technol, Bioprod Res Inst, Tsukuba, Ibaraki, Japan.
[Sekiguchi, Yuji] Natl Inst Adv Ind Sci & Technol, Biomed Res Inst, Tsukuba, Ibaraki, Japan.
[Qiu, Yan-Ling] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao, Shandong, Peoples R China.
[Woyke, Tanja] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Goodwin, Lynne; Davenport, Karen W.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Kamagata, Yoichi] Natl Inst of Adv Ind Sci & Technol AIST, Bioprod Res Inst, Toyohira Ku, Sapporo, Hokkaido, Japan.
RP Liu, WT (reprint author), Univ Illinois, Dept Civil & Environm Engn, Urbana, IL USA.
EM wtliu@illinois.edu
RI Narihiro, Takashi/L-8617-2016; Tamaki, Hideyuki/M-9863-2016
OI Narihiro, Takashi/0000-0003-2936-7204;
FU Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231];
U.S. Department of Energy [DE-SC0006771]
FX The authors thank Professor Michael McInerney for valuable advice and
discussion on aromatic metabolism and syntrophic electron flow. The work
conducted by the U.S. Department of Energy Joint Genome Institute is
supported by the Office of Science of the U.S. Department of Energy
under Contract No. DE-AC02-05CH11231. This work is also supported by the
U.S. Department of Energy under Award DE-SC0006771 to the University of
Illinois, Urbana-Champaign.
NR 64
TC 9
Z9 9
U1 10
U2 21
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1462-2912
EI 1462-2920
J9 ENVIRON MICROBIOL
JI Environ. Microbiol.
PD DEC
PY 2015
VL 17
IS 12
BP 4861
EP 4872
DI 10.1111/1462-2920.12444
PG 12
WC Microbiology
SC Microbiology
GA DB4BN
UT WOS:000368457800005
PM 24589017
ER
PT J
AU Men, Y
Seth, EC
Yi, S
Crofts, TS
Allen, RH
Taga, ME
Alvarez-Cohen, L
AF Men, Yujie
Seth, Erica C.
Yi, Shan
Crofts, Terence S.
Allen, Robert H.
Taga, Michiko E.
Alvarez-Cohen, Lisa
TI Identification of specific corrinoids reveals corrinoid modification in
dechlorinating microbial communities
SO ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID TETRACHLOROETHENE REDUCTIVE DEHALOGENASE; LOWER LIGAND;
DEHALOCOCCOIDES-MCCARTYI; VINYL-CHLORIDE;
METHANOBACTERIUM-THERMOAUTOTROPHICUM; DEHALOSPIRILLUM-MULTIVORANS;
GENOME SEQUENCE; SPOROMUSA-OVATA; FACTOR-III; SP STRAIN
AB Cobalamin and other corrinoids are essential cofactors for many organisms. The majority of microbes with corrinoid-dependent enzymes do not produce corrinoids de novo, and instead must acquire corrinoids produced by other organisms in their environment. However, the profile of corrinoids produced in corrinoid-dependent microbial communities, as well as the exchange and modification of corrinoids among community members have not been well studied. In this study, we applied a newly developed liquid chromatography tandem mass spectrometry-based corrinoid detection method to examine relationships among corrinoids, their lower ligand bases and specific microbial groups in microbial communities containing Dehalococcoides mccartyi that has an obligate requirement for benzimidazole-containing corrinoids for trichloroethene respiration. We found that p-cresolylcobamide ([p-Cre]Cba) and cobalamin were the most abundant corrinoids in the communities. It suggests that members of the family Veillonellaceae are associated with the production of [p-Cre]Cba. The decrease of supernatant-associated [p-Cre]Cba and the increase of biomass-associated cobalamin were correlated with the growth of D. mccartyi by dechlorination. This supports the hypothesis that D. mccartyi is capable of fulfilling its corrinoid requirements in a community through corrinoid remodelling, in this case, by importing extracellular [p-Cre]Cba and 5,6-dimethylbenzimidazole (DMB) (the lower ligand of cobalamin), to produce cobalamin as a cofactor for dechlorination. This study also highlights the role of DMB, the lower ligand produced in all of the studied communities, in corrinoid remodelling. These findings provide novel insights on roles played by different phylogenetic groups in corrinoid production and corrinoid exchange within microbial communities. This study may also have implications for optimizing chlorinated solvent bioremediation.
C1 [Men, Yujie; Yi, Shan; Alvarez-Cohen, Lisa] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
[Seth, Erica C.; Crofts, Terence S.; Taga, Michiko E.] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA.
[Allen, Robert H.] Univ Colorado, Dept Med, Div Hematol, Aurora, CO 80045 USA.
[Alvarez-Cohen, Lisa] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Alvarez-Cohen, L (reprint author), Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
EM alvarez@ce.berkeley.edu
FU Strategic Environmental Research and Development Program (SERDP)
[ER-1587]; NIEHS [P42ES004705]; NSF [CBET1336709, MCB1122046]
FX This research was supported by the Strategic Environmental Research and
Development Program (SERDP) through grant ER-1587, NIEHS Superfund
P42ES004705 and NSF CBET1336709 to L.A.C. and NSF grant MCB1122046 to
M.E.T.
NR 56
TC 9
Z9 9
U1 9
U2 19
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1462-2912
EI 1462-2920
J9 ENVIRON MICROBIOL
JI Environ. Microbiol.
PD DEC
PY 2015
VL 17
IS 12
BP 4873
EP 4884
DI 10.1111/1462-2920.12500
PG 12
WC Microbiology
SC Microbiology
GA DB4BN
UT WOS:000368457800006
PM 24803319
ER
PT J
AU Hudson, CM
Kirton, E
Hutchinson, MI
Redfern, JL
Simmons, B
Ackerman, E
Singh, S
Williams, KP
Natvig, DO
Powell, AJ
AF Hudson, Corey M.
Kirton, Edward
Hutchinson, Miriam I.
Redfern, Joanna L.
Simmons, Blake
Ackerman, Eric
Singh, Seema
Williams, Kelly P.
Natvig, Donald O.
Powell, Amy J.
TI Lignin-modifying processes in the rhizosphere of arid land grasses
SO ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID BIOFUEL PRODUCTION; SEMIARID GRASSLAND; GENOME; SEQUENCE; SOIL;
DIVERSITY; LACCASE; DEPOLYMERIZATION; PEROXIDASES; FOREST
AB Genes associated with elevated oxidative enzyme activities in arid systems have not been well characterized. To link measured oxidative activities with specific enzymes, we assembled protein-coding reads from the rhizospheres (RHZ) of two arid land grasses. Targeted gene scans for open reading frames, encoding genes potentially involved in lignin modification, resulted in 127 distinct assembly products. The putative genes included those significantly similar to Class II secretory fungal peroxidases. These genes are expressed at sufficiently high levels for assembly, annotation and differentiation across experimental conditions, and they demonstrate the interplay of root systems, environment and plant microbiomes. The genes assembled also included copper-dependent lytic polysaccharide monooxygenases. We detail the enzymes in the host grass RHZs and present a preliminary taxonomic microhabitat characterization. Our findings provide support for biologically mediated Fenton chemistry in the root zones of desert grasses, and provide insight into arid land carbon flow. These results also demonstrate a hyperdiverse microbial community. Both ribosomal RNA and messenger RNA sequences were dominated by bacteria, followed by fungal sequence abundance. Among the notable fungal sequences were those from the members of the arbuscular mycorrhizal fungi (Glomeromycota), which though abundant in this study, we rarely observed in previous PCR-based surveys.
C1 [Ackerman, Eric; Powell, Amy J.] Sandia Natl Labs, Computat Simulat, POB 5800, Albuquerque, NM 87185 USA.
[Hudson, Corey M.; Simmons, Blake; Singh, Seema; Williams, Kelly P.] Sandia Natl Labs, Livermore, CA USA.
[Kirton, Edward] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Hutchinson, Miriam I.; Redfern, Joanna L.; Natvig, Donald O.] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA.
[Simmons, Blake; Singh, Seema] Joint BioEnergy Inst, Emeryville, CA USA.
RP Powell, AJ (reprint author), Sandia Natl Labs, Computat Simulat, POB 5800, Albuquerque, NM 87185 USA.
EM ajpowel@sandia.gov
OI Hutchinson, Miriam/0000-0003-4077-0184
FU Community Sequencing Program award from the Department of Energy's Joint
Genome Institute; National Science Foundation award; Sandia National
Laboratories' (SNL) Laboratory Directed Research and Development project
'Understanding and Regulation of Microbial Lignolysis for Renewable
Platform Chemicals'; SNL; Office of Science, Office of Biological and
Environmental Research, of the U.S. Department of Energy
[DE-AC02-05CH11231]; United States Department of Energy
[DE-ACO4-94AL85000]
FX We would like to thank Tijana Glavina del Rio and Susannah Tringe from
the Joint Genome Institute for archiving and recovering accessions. We
acknowledge support in the form of a Community Sequencing Program award
from the Department of Energy's Joint Genome Institute (A.J. Powell, PI)
and from a National Science Foundation award to the University of New
Mexico for the Sevilleta Long-Term Ecological Research programme.
Additional support came from Sandia National Laboratories' (SNL)
Laboratory Directed Research and Development project 'Understanding and
Regulation of Microbial Lignolysis for Renewable Platform Chemicals' (S.
Singh, PI) and a sub-award from SNL to D. Natvig. S. Singh would like to
acknowledge her JBEI funding from Office of Science, Office of
Biological and Environmental Research, of the U.S. Department of Energy
under Contract No. DE-AC02-05CH11231. Sandia is a multi-programme
laboratory operated by Sandia Corporation, a Lockheed Martin Company,
for the United States Department of Energy under Contract
DE-ACO4-94AL85000. Special thanks to Scott Collins and William Pockman,
University of New Mexico Department of Biology and to the US Fish and
Wildlife Service at the Sevilleta National Wildlife Refuge for
generously providing access to field sites.
NR 56
TC 1
Z9 1
U1 2
U2 22
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1462-2912
EI 1462-2920
J9 ENVIRON MICROBIOL
JI Environ. Microbiol.
PD DEC
PY 2015
VL 17
IS 12
BP 4965
EP 4978
DI 10.1111/1462-2920.13020
PG 14
WC Microbiology
SC Microbiology
GA DB4BN
UT WOS:000368457800013
PM 26279186
ER
PT J
AU Wang, XB
Van Nostrand, JD
Deng, Y
Lu, XT
Wang, C
Zhou, JZ
Han, XG
AF Wang, Xiaobo
Van Nostrand, Joy D.
Deng, Ye
Lu, Xiaotao
Wang, Chao
Zhou, Jizhong
Han, Xingguo
TI Scale-dependent effects of climate and geographic distance on bacterial
diversity patterns across northern China's grasslands
SO FEMS MICROBIOLOGY ECOLOGY
LA English
DT Article
DE microbial biogeography; dispersal limitation; spatial patterns;
metagenomic sequencing; soil microbial ecology; aridity; Inner Mongolia
ID MICROBIAL COMMUNITY COMPOSITION; GLOBAL PATTERNS; PHYLOGENETIC
DIVERSITY; SEMIARID GRASSLANDS; FUNGAL COMMUNITIES; SPECIES RICHNESS;
SOIL BACTERIA; BIOGEOGRAPHY; PLANT; BIODIVERSITY
AB Patterns of variation in plant and animal diversity along precipitation gradients have been extensively studied, but much less is known about how and to what extent precipitation affects the biogeographic distribution of microbial diversity in arid areas across large spatial scales. Here we collected soils from 54 sites along a 3700 km transect covering a wide range of grassland ecosystems with distinct aridity gradients. We quantified the bacterial community diversity and the effects of climate, edaphic parameter and geographic distance on the bacterial community structure using high-throughput 16S rRNA gene sequencing. Of the 35 phyla detected, 6 were dominant: Actinobacteria, Acidobacteria, Alphaproteobacteria, Deltaproteobacteria, Bacteroidetes and Planctomycetes. Aridity was a major factor influencing bacterial diversity, community composition and taxon abundance. Although the pattern of bacterial species richness is markedly different from that of plant species richness, most soil bacteria were endemic to particular bioregions like macro-organisms. Community similarity significantly declined with environmental distance and geographic distance (r = -0.579 and -0.773, respectively). Geographic distance (historical contingencies) contributed more to bacterial community variation (36.02%) than combined environmental factors (24.06%). Overall, our results showed that geographic distance and climatic factors concurrently govern bacterial biogeographic patterns in arid and semi-arid grassland.
C1 [Wang, Xiaobo; Lu, Xiaotao; Wang, Chao; Han, Xingguo] Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China.
[Wang, Xiaobo] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
[Wang, Xiaobo; Van Nostrand, Joy D.; Zhou, Jizhong] Univ Oklahoma, Inst Environm Gen, Dept Microbiol & Plant Biol, Norman, OK 73019 USA.
[Deng, Ye] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China.
[Zhou, Jizhong] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Earth Sci Div, Berkeley, CA 94720 USA.
[Zhou, Jizhong] Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China.
RP Han, XG (reprint author), Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China.
EM xghan@ibcas.ac.cn
RI Lu (u), Xiao-Tao/B-3905-2008; Van Nostrand, Joy/F-1740-2016; Han,
Xingguo/K-7552-2016;
OI Lu (u), Xiao-Tao/0000-0001-5571-1895; Van Nostrand,
Joy/0000-0001-9548-6450; Han, Xingguo/0000-0002-1836-975X; ?,
?/0000-0002-7584-0632
FU Strategic Priority Research Program of the Chinese Academy of Sciences
[XDB15010401]; State Key Laboratory of Forest and Soil Ecology
[LFSE2015-19]; Office of the Vice President for Research at the
University of Oklahoma; Collaborative Innovation Center for Regional
Environmental Quality; Youth Innovation Promotion Association CAS
[2014174]
FX We thank all the members of the Shenyang Sampling Campaign Team from the
Institute of Applied Ecology, Chinese Academy of Sciences for their
assistance during field sampling. We also thank Daliang Ning and
Chongqing Wen for their assistance in laboratory work and Xiangzhen Li
and Shuijin Hu for comments on the earlier version. This work was
financially supported by the Strategic Priority Research Program of the
Chinese Academy of Sciences (XDB15010401), the State Key Laboratory of
Forest and Soil Ecology (LFSE2015-19), the Office of the Vice President
for Research at the University of Oklahoma, the Collaborative Innovation
Center for Regional Environmental Quality, and the Youth Innovation
Promotion Association CAS (2014174).
NR 76
TC 1
Z9 2
U1 24
U2 69
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0168-6496
EI 1574-6941
J9 FEMS MICROBIOL ECOL
JI FEMS Microbiol. Ecol.
PD DEC
PY 2015
VL 91
IS 12
AR fiv133
DI 10.1093/femsec/fiv133
PG 10
WC Microbiology
SC Microbiology
GA DB3SA
UT WOS:000368430600006
ER
PT J
AU Blom, PS
Marcillo, O
Arrowsmith, SJ
AF Blom, Philip S.
Marcillo, Omar
Arrowsmith, Stephen J.
TI Improved Bayesian Infrasonic Source Localization for regional infrasound
SO GEOPHYSICAL JOURNAL INTERNATIONAL
LA English
DT Article
DE Probability distributions; Acoustic-gravity waves; Seismic monitoring
and test-ban treaty verification; Wave propagation
ID STRATOSPHERIC WARMINGS; LOCATION; PROPAGATION; EXPLOSION; CELERITY;
ARRAYS
AB The mathematical framework used in the Bayesian Infrasonic Source Localization (BISL) methodology is examined and simplified providing a generalized method of estimating the source location and time for an infrasonic event. The likelihood function describing an infrasonic detection used in BISL has been redefined to include the von Mises distribution developed in directional statistics and propagation-based, physically derived celerity-range and azimuth deviation models. Frameworks for constructing propagation-based celerity-range and azimuth deviation statistics are presented to demonstrate how stochastic propagation modelling methods can be used to improve the precision and accuracy of the posterior probability density function describing the source localization. Infrasonic signals recorded at a number of arrays in the western United States produced by rocket motor detonations at the Utah Test and Training Range are used to demonstrate the application of the new mathematical framework and to quantify the improvement obtained by using the stochastic propagation modelling methods. Using propagation-based priors, the spatial and temporal confidence bounds of the source decreased by more than 40 per cent in all cases and by as much as 80 per cent in one case. Further, the accuracy of the estimates remained high, keeping the ground truth within the 99 per cent confidence bounds for all cases.
C1 [Blom, Philip S.; Marcillo, Omar] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
[Arrowsmith, Stephen J.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
RP Blom, PS (reprint author), Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
EM pblom@lanl.gov
FU National Nuclear Security Administration Office of Nonproliferation and
Treaty Verification Research and Development; U.S. Department of Energy
FX The authors acknowledge the support of Leslie Casey and the National
Nuclear Security Administration Office of Nonproliferation and Treaty
Verification Research and Development for funding this work. Los Alamos
National Laboratory completed this work under the auspices of the U.S.
Department of Energy.
NR 32
TC 3
Z9 3
U1 1
U2 4
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0956-540X
EI 1365-246X
J9 GEOPHYS J INT
JI Geophys. J. Int.
PD DEC
PY 2015
VL 203
IS 3
BP 1682
EP 1693
DI 10.1093/gji/ggv387
PG 12
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA DB3QQ
UT WOS:000368426800013
ER
PT J
AU Lin, YZ
Huang, LJ
AF Lin, Youzuo
Huang, Lianjie
TI Quantifying subsurface geophysical properties changes using
double-difference seismic-waveform inversion with a modified
total-variation regularization scheme
SO GEOPHYSICAL JOURNAL INTERNATIONAL
LA English
DT Article
DE Numerical solutions; Inverse theory; Numerical approximations and
analysis; Non-linear differential equations; Body waves; Seismic
tomography
ID IMAGE-RESTORATION; NOISE REMOVAL; TIME; RECONSTRUCTION; ALGORITHMS
AB Quantifying time-lapse changes of subsurface geophysical properties is crucial for many applications, such as monitoring for oil/gas production, for geologic carbon storage, and for enhanced geothermal systems, etc. We develop a new double-difference acoustic-waveform inversion method and a new double-difference elastic-waveform inversion method using a modified total-variation regularization scheme for accurate estimation of subsurface geophysical properties changes. The method jointly inverts time-lapse seismic data for changes of geophysical properties in target monitoring regions. Our new waveform inversion algorithms incorporate a modified total-variation regularization scheme consisting of two regularization terms: an L-2 norm term and an L-1 norm total-variation term. We employ an alternating minimization method to decouple our new waveform inversion with the modified total-variation regularization into two minimization subproblems to improve the robustness of waveform inversion. We use seismic-waveform inversion with a modified total-variation regularization scheme to produce an accurate baseline geophysical model using the baseline seismic data and apply our new double-difference seismic-waveform inversion to time-lapse seismic data to quantify time-lapse changes of geophysical properties. Our new double-difference waveform inversion algorithm not only preserves sharp interfaces of the target monitoring regions but also reduces inversion artefacts outside the target monitoring regions. We use synthetic time-lapse seismic data to validate the improvement of our new methods. Our numerical results show that our new double-difference acoustic-and elastic-waveform inversion methods significantly improve the accuracy of time-lapse seismic data inversion compared to other inversion methods.
C1 [Lin, Youzuo; Huang, Lianjie] Los Alamos Natl Lab, Geophys Grp, MS D452, Los Alamos, NM 87545 USA.
RP Lin, YZ (reprint author), Los Alamos Natl Lab, Geophys Grp, MS D452, Los Alamos, NM 87545 USA.
EM ylin@lanl.gov
FU United States Department of Energy [DE-AC52-06NA25396]
FX This work was supported by the United States Department of Energy
through contract DE-AC52-06NA25396 to Los Alamos National Laboratory
(LANL). The computation was performed on supercomputers provided by
LANL's Institutional Computing Program. We thank John Queen of Hi-Q
Geophysical Inc. for providing us with a velocity model of Brady's
geothermal site. We thank Dr. Yike Liu and an anonymous reviewer for
their valuable comments.
NR 45
TC 2
Z9 2
U1 1
U2 4
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0956-540X
EI 1365-246X
J9 GEOPHYS J INT
JI Geophys. J. Int.
PD DEC
PY 2015
VL 203
IS 3
BP 2125
EP 2149
DI 10.1093/gji/ggv429
PG 25
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA DB3QQ
UT WOS:000368426800043
ER
PT J
AU Liu, MZ
Nam, CY
Zhang, LH
AF Liu, Mingzhao
Nam, Chang-Yong
Zhang, Lihua
TI Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation
SO JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
LA English
DT Article
DE Engineering; Issue 106; Bismuth nanowire; single crystallinity;
vanadium; thermal evaporation
ID BI NANOWIRES; SURFACE; FILM; CONFINEMENT; NANOTUBES
AB Here a seedless and template-free technique is demonstrated to scalably grow bismuth nanowires, through thermal evaporation in high vacuum at RT. Conventionally reserved for the fabrication of metal thin films, thermal evaporation deposits bismuth into an array of vertical single crystalline nanowires over a flat thin film of vanadium held at RT, which is freshly deposited by magnetron sputtering or thermal evaporation. By controlling the temperature of the growth substrate the length and width of the nanowires can be tuned over a wide range. Responsible for this novel technique is a previously unknown nanowire growth mechanism that roots in the mild porosity of the vanadium thin film. Infiltrated into the vanadium pores, the bismuth domains (similar to 1 nm) carry excessive surface energy that suppresses their melting point and continuously expels them out of the vanadium matrix to form nanowires. This discovery demonstrates the feasibility of scalable vapor phase synthesis of high purity nanomaterials without using any catalysts.
C1 [Liu, Mingzhao; Nam, Chang-Yong; Zhang, Lihua] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Liu, MZ (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
EM mzliu@bnl.gov
RI Liu, Mingzhao/A-9764-2011; Nam, Chang-Yong/D-4193-2009
OI Liu, Mingzhao/0000-0002-0999-5214; Nam, Chang-Yong/0000-0002-9093-4063
FU U.S. Department of Energy, Office of Basic Energy Sciences
[DE-SC0012704]
FX Research is carried out at the Center for Functional Nanomaterials,
Brookhaven National Laboratory, which is supported by the U.S.
Department of Energy, Office of Basic Energy Sciences, under Contract
No. DE-SC0012704.
NR 21
TC 0
Z9 0
U1 1
U2 5
PU JOURNAL OF VISUALIZED EXPERIMENTS
PI CAMBRIDGE
PA 1 ALEWIFE CENTER, STE 200, CAMBRIDGE, MA 02140 USA
SN 1940-087X
J9 JOVE-J VIS EXP
JI J. Vis. Exp.
PD DEC
PY 2015
IS 106
AR e53396
DI 10.3791/53396
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DB5SR
UT WOS:000368574400046
PM 26709727
ER
PT J
AU Reardon-Robinson, ME
Osipiuk, J
Jooya, N
Chang, CY
Joachimiak, A
Das, A
Ton-That, H
AF Reardon-Robinson, Melissa E.
Osipiuk, Jerzy
Jooya, Neda
Chang, Chungyu
Joachimiak, Andrzej
Das, Asis
Ton-That, Hung
TI A thiol-disulfide oxidoreductase of the Gram-positive pathogen
Corynebacterium diphtheriae is essential for viability, pilus assembly,
toxin production and virulence
SO MOLECULAR MICROBIOLOGY
LA English
DT Article
ID FORMATION IN-VIVO; STAPHYLOCOCCUS-AUREUS DSBA; BOND FORMATION;
MYCOBACTERIUM-TUBERCULOSIS; CRYSTAL-STRUCTURE; PROTEIN; GLUTAMICUM;
MEMBRANE; PATHWAY; SURFACE
AB The Gram-positive pathogen Corynebacterium diphtheriae exports through the Sec apparatus many extracellular proteins that include the key virulence factors diphtheria toxin and the adhesive pili. How these proteins attain their native conformations after translocation as unfolded precursors remains elusive. The fact that the majority of these exported proteins contain multiple cysteine residues and that several membrane-bound oxidoreductases are encoded in the corynebacterial genome suggests the existence of an oxidative protein-folding pathway in this organism. Here we show that the shaft pilin SpaA harbors a disulfide bond in vivo and alanine substitution of these cysteines abrogates SpaA polymerization and leads to the secretion of degraded SpaA peptides. We then identified a thiol-disulfide oxidoreductase (MdbA), whose structure exhibits a conserved thioredoxin-like domain with a CPHC active site. Remarkably, deletion of mdbA results in a severe temperature-sensitive cell division phenotype. This mutant also fails to assemble pilus structures and is greatly defective in toxin production. Consistent with these defects, the Delta mdbA mutant is attenuated in a guinea pig model of diphtheritic toxemia. Given its diverse cellular functions in cell division, pilus assembly and toxin production, we propose that MdbA is a component of the general oxidative folding machine in C. diphtheriae.
C1 [Reardon-Robinson, Melissa E.; Jooya, Neda; Chang, Chungyu; Ton-That, Hung] Univ Texas Hlth Sci Ctr Houston, Dept Microbiol & Mol Genet, Houston, TX 77030 USA.
[Osipiuk, Jerzy; Joachimiak, Andrzej] Argonne Natl Lab, Dept Biosci, Midwest Ctr Struct Genom, Argonne, IL 60439 USA.
[Osipiuk, Jerzy; Joachimiak, Andrzej] Argonne Natl Lab, Dept Biosci, Struct Biol Ctr, Argonne, IL 60439 USA.
[Das, Asis] Univ Connecticut, Ctr Hlth, Dept Mol Biol & Biophys, Farmington, CT USA.
RP Ton-That, H (reprint author), Univ Texas Hlth Sci Ctr Houston, Dept Microbiol & Mol Genet, Houston, TX 77030 USA.
EM ton-that.hung@uth.tmc.edu
OI Ton-That, Hung/0000-0003-1611-0469
FU Predoctoral Training Program in Molecular Basis of Infectious Diseases,
National Institute of Allergy and Infectious Diseases (NIH) [T32
AI55449]; National Institute of General Medical Sciences [GM094585];
National Institute of Dental and Craniofacial Research [F31DE024004,
DE025015]; U.S. Department of Energy, Office of Biological and
Environmental Research [DE-AC02-06CH11357]
FX We thank Timothy Fothergill and Shilpa Muralidhar for technical
assistance, members of the Structural Biology Center at Argonne National
Laboratory for their help in conducting X-ray diffraction data
collection, and our laboratory members for the critical review and
discussion of the manuscript. M.E.R.-R. was previously supported by the
Predoctoral Training Program in Molecular Basis of Infectious Diseases,
National Institute of Allergy and Infectious Diseases (NIH Grant T32
AI55449). This work was supported by the National Institute of General
Medical Sciences grant GM094585 (to J.O. and A.J.) and the National
Institute of Dental and Craniofacial Research under award numbers
F31DE024004 (to M.E.R.-R.) and DE025015 (to H.T.-T.). Argonne is
operated by UChicago Argonne, LLC, for the U.S. Department of Energy,
Office of Biological and Environmental Research under contract
DE-AC02-06CH11357.
NR 58
TC 4
Z9 4
U1 1
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0950-382X
EI 1365-2958
J9 MOL MICROBIOL
JI Mol. Microbiol.
PD DEC
PY 2015
VL 98
IS 6
BP 1037
EP 1050
DI 10.1111/mmi.13172
PG 14
WC Biochemistry & Molecular Biology; Microbiology
SC Biochemistry & Molecular Biology; Microbiology
GA DB3VB
UT WOS:000368439800005
PM 26294390
ER
PT J
AU Jeitner, TM
Battaile, K
Cooper, AJL
AF Jeitner, Thomas M.
Battaile, Kevin
Cooper, Arthur J. L.
TI Critical Evaluation of the Changes in Glutamine Synthetase Activity in
Models of Cerebral Stroke
SO NEUROCHEMICAL RESEARCH
LA English
DT Article
DE Brain; Glutamine synthetase; Ischemia-reperfusion; Oxidative stress;
Stroke
ID PROTEIN-TYROSINE NITRATION; RECEPTOR-MEDIATED RESPONSES; MILD COGNITIVE
IMPAIRMENT; MIXED-FUNCTION OXIDATION; D-ASPARTIC ACID; NITRIC-OXIDE;
RAT-BRAIN; IN-VIVO; ALZHEIMERS-DISEASE; MOUSE MODEL
AB The following article addresses some seemingly paradoxical observations concerning cerebral glutamine synthetase in ischemia-reperfusion injury. In the brain, this enzyme is predominantly found in astrocytes and catalyzes part of the glutamine-glutamate cycle. Glutamine synthetase is also thought to be especially sensitive to inactivation by the oxygen-and nitrogen-centered radicals generated during strokes. Despite this apparent sensitivity, glutamine synthetase specific activity is elevated in the affected tissues during reperfusion. Given the central role of the glutamine-glutamate cycle in the brain, we sought to resolve these conflicting observations with the view of providing an alternative perspective for therapeutic intervention in stroke.
C1 [Jeitner, Thomas M.; Cooper, Arthur J. L.] New York Med Coll, Dept Biochem & Mol Biol, Valhalla, NY 10595 USA.
[Battaile, Kevin] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
RP Jeitner, TM (reprint author), New York Med Coll, Dept Biochem & Mol Biol, Valhalla, NY 10595 USA.
EM tomjeitner@yahoo.com
RI Cooper, Arthur/H-5171-2016;
OI Battaile, Kevin/0000-0003-0833-3259
FU NIH [DK 16739]; Theresa Patnode Santmann Foundation
FX Part of the work described in this review was supported by NIH grant DK
16739 (AJLC) and the Theresa Patnode Santmann Foundation (TMJ).
NR 105
TC 4
Z9 5
U1 3
U2 5
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0364-3190
EI 1573-6903
J9 NEUROCHEM RES
JI Neurochem. Res.
PD DEC
PY 2015
VL 40
IS 12
SI SI
BP 2544
EP 2556
DI 10.1007/s11064-015-1667-1
PG 13
WC Biochemistry & Molecular Biology; Neurosciences
SC Biochemistry & Molecular Biology; Neurosciences & Neurology
GA DB3KZ
UT WOS:000368411500016
PM 26233464
ER
PT J
AU Golonzhka, O
Nord, A
Tang, PLF
Lindtner, S
Ypsilanti, AR
Ferretti, E
Visel, A
Selleri, L
Rubenstein, JLR
AF Golonzhka, Olga
Nord, Alex
Tang, Paul L. F.
Lindtner, Susan
Ypsilanti, Athena R.
Ferretti, Elisabetta
Visel, Axel
Selleri, Licia
Rubenstein, John L. R.
TI Pbx Regulates Patterning of the Cerebral Cortex in Progenitors and
Postmitotic Neurons
SO NEURON
LA English
DT Article
ID MAMMALIAN TELENCEPHALON; HOMEODOMAIN PROTEINS; CORTICAL PROGENITORS;
DEVELOPING NEOCORTEX; AREA IDENTITY; GENE; HOX; EXPRESSION; MICE;
DIFFERENTIATION
AB We demonstrate using conditional mutagenesis that Pbx1, with and without Pbx2(+/-) sensitization, regulates regional identity and laminar patterning of the developing mouse neocortex in cortical progenitors (Emx1-Cre) and in newly generated neurons (Nex1-Cre). Pbx1/2 mutants have three salient molecular phenotypes of cortical regional and laminar organization: hypoplasia of the frontal cortex, ventral expansion of the dorsomedial cortex, and ventral expansion of Reelin expression in the cortical plate of the frontal cortex, concomitant with an inversion of cortical layering in the rostral cortex. Molecular analyses, including PBX ChIP-seq, provide evidence that PBX promotes frontal cortex identity by repressing genes that promote dorsocaudal fate.
C1 [Golonzhka, Olga; Lindtner, Susan; Ypsilanti, Athena R.; Rubenstein, John L. R.] Univ Calif San Francisco, Dept Psychiat, Neurosci Program, San Francisco, CA 94158 USA.
[Golonzhka, Olga; Lindtner, Susan; Ypsilanti, Athena R.; Rubenstein, John L. R.] Univ Calif San Francisco, Nina Ireland Lab Dev Neurobiol, San Francisco, CA 94158 USA.
[Golonzhka, Olga] Acetylon Pharmaceut, Boston, MA 02210 USA.
[Nord, Alex] Univ Calif Davis, Ctr Neurosci, Dept Neurobiol, Davis, CA 95618 USA.
[Nord, Alex] Univ Calif Davis, Ctr Neurosci, Dept Physiol, Davis, CA 95618 USA.
[Nord, Alex] Univ Calif Davis, Ctr Neurosci, Dept Behav, Davis, CA 95618 USA.
[Nord, Alex] Univ Calif Davis, Ctr Neurosci, Dept Psychiat & Behav Sci, Davis, CA 95618 USA.
[Tang, Paul L. F.] Univ Calif San Francisco, Inst Human Genet, San Francisco, CA 94143 USA.
[Visel, Axel] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Genom Div, Berkeley, CA 94720 USA.
[Visel, Axel] US Dept Energy Joint Genome Inst, Walnut Creek, CA 94598 USA.
[Visel, Axel] Univ Calif Merced, Sch Nat Sci, Merced, CA 95343 USA.
[Ferretti, Elisabetta; Selleri, Licia] Cornell Univ, Weill Med Coll, Dept Cell & Dev Biol, New York, NY 10021 USA.
[Ferretti, Elisabetta] Univ Copenhagen, Danish Stem Cell Ctr, DK-2200 Copenhagen, Denmark.
RP Golonzhka, O (reprint author), Univ Calif San Francisco, Dept Psychiat, Neurosci Program, San Francisco, CA 94158 USA.; Golonzhka, O (reprint author), Univ Calif San Francisco, Nina Ireland Lab Dev Neurobiol, San Francisco, CA 94158 USA.
EM ogolonzhka@acetylon.com; john.rubenstein@ucsf.edu
RI Visel, Axel/A-9398-2009
OI Visel, Axel/0000-0002-4130-7784
FU NARSAD; Nina Ireland; Weston Havens Foundation; NINDS [NS34661]; NIMH
[MH049428, MH081880]; NIH [R01HG003988, U54HG006997]; Department of
Energy [DE-AC02-05CH11231]
FX This work was supported by funds from NARSAD to O.G., and Nina Ireland,
Weston Havens Foundation, NINDS (NS34661), and NIMH (MH049428 and
MH081880) to J.L.R.R. A.V. was supported by NIH grants R01HG003988 and
U54HG006997. Research conducted at the E.O. Lawrence Berkeley National
Laboratory was performed under Department of Energy Contract
DE-AC02-05CH11231, University of California. J.L.R.R. is a founder and
consultant for Neurona; this company has no financial interests related
to this paper.
NR 92
TC 3
Z9 4
U1 0
U2 2
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0896-6273
EI 1097-4199
J9 NEURON
JI Neuron
PD DEC
PY 2015
VL 88
IS 6
BP 1192
EP 1207
DI 10.1016/j.neuron.2015.10.045
PG 16
WC Neurosciences
SC Neurosciences & Neurology
GA DB3WM
UT WOS:000368443900015
PM 26671461
ER
PT J
AU Smith, RA
Gonzales-Vigil, E
Karlen, SD
Park, JY
Lu, FC
Wilkerson, CG
Samuels, L
Ralph, J
Mansfield, SD
AF Smith, Rebecca A.
Gonzales-Vigil, Eliana
Karlen, Steven D.
Park, Ji-Young
Lu, Fachuang
Wilkerson, Curtis G.
Samuels, Lacey
Ralph, John
Mansfield, Shawn D.
TI Engineering Monolignol p-Coumarate Conjugates into Poplar and
Arabidopsis Lignins
SO PLANT PHYSIOLOGY
LA English
DT Article
ID TETRAMETHYLAMMONIUM HYDROXIDE TMAH; STATE 2D NMR; DFRC METHOD;
STRUCTURAL-CHARACTERIZATION; SINAPYL ALCOHOL; HERBACEOUS PLANTS; ETHER
CLEAVAGE; MAIZE LIGNIN; CELL-WALLS; LIGNIFICATION
AB Lignin acylation, the decoration of hydroxyls on lignin structural units with acyl groups, is common in many plant species. Monocot lignins are decorated with p-coumarates by the polymerization of monolignol p-coumarate conjugates. The acyltransferase involved in the formation of these conjugates has been identified in a number of model monocot species, but the effect of monolignol p-coumarate conjugates on lignification and plant growth and development has not yet been examined in plants that do not inherently possess p-coumarates on their lignins. The rice (Oryza sativa) p-COUMAROYL-Coenzyme A MONOLIGNOL TRANSFERASE gene was introduced into two eudicots, Arabidopsis (Arabidopsis thaliana) and poplar (Populus alba 3 grandidentata), and a series of analytical methods was used to show the incorporation of the ensuing monolignol p-coumarate conjugates into the lignin of these plants. In poplar, specifically, the addition of these conjugates did not occur at the expense of the naturally incorporated monolignol p-hydroxybenzoates. Plants expressing the p-COUMAROYL-Coenzyme A MONOLIGNOL TRANSFERASE transgene can therefore produce monolignol p-coumarate conjugates essentially without competing with the formation of other acylated monolignols and without drastically impacting normal monolignol production.
C1 [Smith, Rebecca A.; Gonzales-Vigil, Eliana; Karlen, Steven D.; Lu, Fachuang; Wilkerson, Curtis G.; Ralph, John; Mansfield, Shawn D.] Michigan State Univ, Dept Energys, Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA.
[Wilkerson, Curtis G.] Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA.
[Wilkerson, Curtis G.] Michigan State Univ, Dept Biochem, E Lansing, MI 48824 USA.
[Wilkerson, Curtis G.] Michigan State Univ, Dept Mol Biol, E Lansing, MI 48824 USA.
[Smith, Rebecca A.; Karlen, Steven D.; Lu, Fachuang; Ralph, John] Univ Wisconsin, Wisconsin Energy Inst, Madison, WI 53726 USA.
[Smith, Rebecca A.; Lu, Fachuang; Ralph, John] Univ Wisconsin, Dept Biochem, Madison, WI 53706 USA.
[Gonzales-Vigil, Eliana; Park, Ji-Young; Mansfield, Shawn D.] Univ British Columbia, Dept Wood Sci, Vancouver, BC V6T 1Z4, Canada.
[Samuels, Lacey] Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada.
RP Mansfield, SD (reprint author), Michigan State Univ, Dept Energys, Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA.
EM shawn.mansfield@ubc.ca
FU Department of Energy's Great Lakes Bioenergy Research Center, Department
of Energy, Biological and Environmental Research, Office of Science
[DE-FC02-07ER64494]
FX This work was supported by the Department of Energy's Great Lakes
Bioenergy Research Center, Department of Energy, Biological and
Environmental Research, Office of Science (grant no. DE-FC02-07ER64494).
NR 64
TC 5
Z9 5
U1 14
U2 21
PU AMER SOC PLANT BIOLOGISTS
PI ROCKVILLE
PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 USA
SN 0032-0889
EI 1532-2548
J9 PLANT PHYSIOL
JI Plant Physiol.
PD DEC
PY 2015
VL 169
IS 4
BP 2992
EP 3001
DI 10.1104/pp.15.00815
PG 10
WC Plant Sciences
SC Plant Sciences
GA DB4GY
UT WOS:000368472700047
PM 26511914
ER
PT J
AU Quinn, JY
Cox, RS
Adler, A
Beal, J
Bhatia, S
Cai, YZ
Chen, J
Clancy, K
Galdzicki, M
Hillson, NJ
Le Novere, N
Maheshwari, AJ
McLaughlin, JA
Myers, CJ
Umesh, P
Pocock, M
Rodriguez, C
Soldatova, L
Stan, GBV
Swainston, N
Wipat, A
Sauro, HM
AF Quinn, Jacqueline Y.
Cox, Robert Sidney, III
Adler, Aaron
Beal, Jacob
Bhatia, Swapnil
Cai, Yizhi
Chen, Joanna
Clancy, Kevin
Galdzicki, Michal
Hillson, Nathan J.
Le Novere, Nicolas
Maheshwari, Akshay J.
McLaughlin, James Alastair
Myers, Chris J.
Umesh, P.
Pocock, Matthew
Rodriguez, Cesar
Soldatova, Larisa
Stan, Guy-Bart V.
Swainston, Neil
Wipat, Anil
Sauro, Herbert M.
TI SBOL Visual: A Graphical Language for Genetic Designs
SO PLOS BIOLOGY
LA English
DT Editorial Material
ID ESCHERICHIA-COLI; SYNTHETIC BIOLOGY; SOFTWARE PLATFORM; SYSTEMS;
STANDARD; PATHWAY; YEAST; DNA
AB Synthetic Biology Open Language (SBOL) Visual is a graphical standard for genetic engineering. It consists of symbols representing DNA subsequences, including regulatory elements and DNA assembly features. These symbols can be used to draw illustrations for communication and instruction, and as image assets for computer-aided design. SBOL Visual is a community standard, freely available for personal, academic, and commercial use (Creative Commons CC0 license). We provide prototypical symbol images that have been used in scientific publications and software tools. We encourage users to use and modify them freely, and to join the SBOL Visual community: http://www.sbolstandard.org/visual.
C1 [Quinn, Jacqueline Y.] Autodesk Inc, Autodesk Res, San Francisco, CA USA.
[Cox, Robert Sidney, III] Kobe Univ, Chem Sci & Engn, Kobe, Hyogo 657, Japan.
[Adler, Aaron; Beal, Jacob] Raytheon BBN Technol, Informat & Knowledge Technol, Cambridge, MA USA.
[Bhatia, Swapnil] Boston Univ, Elect & Comp Engn, Boston, MA 02215 USA.
[Cai, Yizhi] Univ Edinburgh, Sch Biol Sci, Edinburgh, Midlothian, Scotland.
[Chen, Joanna; Hillson, Nathan J.] Joint BioEnergy Inst, Fuels Synth Div, Emeryville, CA USA.
[Chen, Joanna; Hillson, Nathan J.] Joint BioEnergy Inst, Div Technol, Emeryville, CA USA.
[Chen, Joanna; Hillson, Nathan J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Clancy, Kevin] ThermoFisher Sci, Synthet Biol Unit, Carlsbad, CA USA.
[Galdzicki, Michal] Arzeda Corp, Seattle, WA USA.
[Le Novere, Nicolas] Babraham Inst, Cambridge, England.
[Maheshwari, Akshay J.] Stanford Univ, Sch Med, Stanford, CA 94305 USA.
[McLaughlin, James Alastair; Pocock, Matthew; Wipat, Anil] Newcastle Univ, Sch Comp Sci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England.
[Myers, Chris J.] Univ Utah, Dept Elect & Comp Engn, Salt Lake City, UT USA.
[Umesh, P.] Univ Kerala, Dept Computat Biol & Bioinformat, Thiruvananthapuram 695034, Kerala, India.
[Pocock, Matthew] Turing Ate My Hamster LTD, Newcastle Upon Tyne, Tyne & Wear, England.
[Rodriguez, Cesar] Florida State Univ, Coll Med, Dept Biomed Sci, Tallahassee, FL 32306 USA.
[Soldatova, Larisa] Brunel Univ, Comp Sci, London, England.
[Stan, Guy-Bart V.] Univ London Imperial Coll Sci Technol & Med, Ctr Synthet Biol & Innovat, Dept Bioengn, London, England.
[Swainston, Neil] Univ Manchester, Ctr Synthet Biol Fine & Specialty Chem SYNBIOCHEM, Manchester, Lancs, England.
[Sauro, Herbert M.] Univ Washington, Bioengn, Seattle, WA 98195 USA.
RP Quinn, JY (reprint author), Autodesk Inc, Autodesk Res, San Francisco, CA USA.
EM hsauro@uw.edu
OI Soldatova, Larisa/0000-0001-6489-3029; Le Novere,
Nicolas/0000-0002-6309-7327; Cai, Yizhi/0000-0003-1663-2865
FU Autodesk, Inc.; Stanford University; Brunel University; National Science
Foundation Synthetic Biology Engineering Research Center; Office of
Science, Office of Biological and Environmental Research, of the US
Department of Energy [DE-AC02-05CH11231]; National Library of Medicine
[R41 LM010745]; National Human Genome Research Institute [R42 HG006737];
NSF [0827592, 1158573]; UK Engineering and Physical Sciences Research
Council (Flowers Consortium) [EP/J02175X/1]; UK Biotechnology and
Biosciences Research Council (Centre for Synthetic Biology of Fine and
Speciality Chemicals (SYNBIOCHEM)) [BB/M017702/1]; BBSRC [BB/M025640/1];
National Science Foundation [DBI-1356041, DBI-1355909]; [EF-0850100]
FX The authors acknowledge funding from Autodesk, Inc., Stanford
University, Brunel University, and the National Science Foundation
Synthetic Biology Engineering Research Center and Grant EF-0850100. The
portion of this work conducted by the Joint BioEnergy Institute was
supported by the Office of Science, Office of Biological and
Environmental Research, of the US Department of Energy (Contract No.
DE-AC02-05CH11231, to NJH). The portion of the work conducted by the
University of Washington was supported by the National Library of
Medicine (R41 LM010745), the National Human Genome Research Institute
(R42 HG006737) and NSF awards: Theoretical Biology 0827592, Molecular
and Cellular Biosciences 1158573. The portions of this work conducted by
Newcastle University and Imperial College London were supported by the
UK Engineering and Physical Sciences Research Council (Flowers
Consortium, Grant No. EP/J02175X/1, to GBVS). The work conducted by the
University of Manchester was supported by the UK Biotechnology and
Biosciences Research Council (Centre for Synthetic Biology of Fine and
Speciality Chemicals (SYNBIOCHEM; BB/M017702/1). The work conducted by
the University of Edinburgh was supported by a Chancellor's Fellowship
and BBSRC grant (Building national hardware and software infrastructure
for UK DNA Foundries; BB/M025640/1). Finally, SBOL is supported by the
National Science Foundation under Grant Nos. DBI-1356041 to CJM, and
DBI-1355909 to HMS. Any opinions, findings, and conclusions or
recommendations expressed in this material are those of the authors and
do not necessarily reflect the views of the National Science Foundation
or our other funding agencies. The funders had no role in study design,
data collection and analysis, decision to publish, or preparation of the
manuscript.
NR 36
TC 13
Z9 13
U1 2
U2 10
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1545-7885
J9 PLOS BIOL
JI PLoS. Biol.
PD DEC
PY 2015
VL 13
IS 12
AR e1002310
DI 10.1371/journal.pbio.1002310
PG 9
WC Biochemistry & Molecular Biology; Biology
SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other
Topics
GA DB3WE
UT WOS:000368443000003
PM 26633141
ER
PT J
AU Immonen, TT
Conway, JM
Romero-Severson, EO
Perelson, AS
Leitner, T
AF Immonen, Taina T.
Conway, Jessica M.
Romero-Severson, Ethan O.
Perelson, Alan S.
Leitner, Thomas
TI Recombination Enhances HIV-1 Envelope Diversity by Facilitating the
Survival of Latent Genomic Fragments in the Plasma Virus Population
SO PLOS COMPUTATIONAL BIOLOGY
LA English
DT Article
ID CD4(+) T-CELLS; TYPE-1 INFECTION; EVOLUTIONARY RATES; WITHIN-HOST; VIRAL
LOAD; IN-VIVO; RESERVOIR; PERSISTENCE; THERAPY; ESCAPE
AB HIV-1 is subject to immune pressure exerted by the host, giving variants that escape the immune response an advantage. Virus released from activated latent cells competes against variants that have continually evolved and adapted to host immune pressure. Nevertheless, there is increasing evidence that virus displaying a signal of latency survives in patient plasma despite having reduced fitness due to long-term immune memory. We investigated the survival of virus with latent envelope genomic fragments by simulating within-host HIV-1 sequence evolution and the cycling of viral lineages in and out of the latent reservoir. Our model incorporates a detailed mutation process including nucleotide substitution, recombination, latent reservoir dynamics, diversifying selection pressure driven by the immune response, and purifying selection pressure asserted by deleterious mutations. We evaluated the ability of our model to capture sequence evolution in vivo by comparing our simulated sequences to HIV-1 envelope sequence data from 16 HIV-infected untreated patients. Empirical sequence divergence and diversity measures were qualitatively and quantitatively similar to those of our simulated HIV-1 populations, suggesting that our model invokes realistic trends of HIV-1 genetic evolution. Moreover, reconstructed phylogenies of simulated and patient HIV-1 populations showed similar topological structures. Our simulation results suggest that recombination is a key mechanism facilitating the persistence of virus with latent envelope genomic fragments in the productively infected cell population. Recombination increased the survival probability of latent virus forms approximately 13-fold. Prevalence of virus with latent fragments in productively infected cells was observed in only 2% of simulations when we ignored recombination, while the proportion increased to 27% of simulations when we allowed recombination. We also found that the selection pressures exerted by different fitness landscapes influenced the shape of phylogenies, diversity trends, and survival of virus with latent genomic fragments. Our model predicts that the persistence of latent genomic fragments from multiple different ancestral origins increases sequence diversity in plasma for reasonable fitness landscapes.
C1 [Immonen, Taina T.; Romero-Severson, Ethan O.; Perelson, Alan S.; Leitner, Thomas] Los Alamos Natl Lab, Theoret Biol & Biophys, Los Alamos, NM USA.
[Conway, Jessica M.] Penn State Univ, Dept Math, University Pk, PA 16802 USA.
RP Immonen, TT (reprint author), Los Alamos Natl Lab, Theoret Biol & Biophys, Los Alamos, NM USA.
EM tti@lanl.gov
FU National Institutes of Health [R01-AI028433, R01-OD011095, AI106437]
FX This research was funded by the National Institutes of Health grants
R01-AI028433 and R01-OD011095 (awarded to ASP), and the National
Institutes of Health grant AI106437 (awarded to TL). The funders had no
role in study design, data collection and analysis, decision to publish,
or preparation of the manuscript.
NR 56
TC 3
Z9 3
U1 1
U2 3
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1553-734X
EI 1553-7358
J9 PLOS COMPUT BIOL
JI PLoS Comput. Biol.
PD DEC
PY 2015
VL 11
IS 12
AR e1004625
DI 10.1371/journal.pcbi.1004625
PG 26
WC Biochemical Research Methods; Mathematical & Computational Biology
SC Biochemistry & Molecular Biology; Mathematical & Computational Biology
GA DB4ZJ
UT WOS:000368521900026
PM 26693708
ER
PT J
AU Dyatkin, B
Mamontov, E
Cook, KM
Gogotsi, Y
AF Dyatkin, Boris
Mamontov, Eugene
Cook, Kevin M.
Gogotsi, Yury
TI Capacitance, charge dynamics, and electrolyte-surface interactions in
functionalized carbide-derived carbon electrodes
SO PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
LA English
DT Article
DE Supercapacitor; Carbide-derived carbon; Neutron scattering; Energy
storage; Porous materials; Surface chemistry
ID TEMPERATURE IONIC LIQUIDS; NANOPOROUS CARBON; ELECTROCHEMICAL
PERFORMANCE; PORE-SIZE; SUPERCAPACITORS; SIMULATION; CONDUCTIVITY;
ADSORPTION; SCATTERING; CHEMISTRY
AB This study analyzed the dynamics of ionic liquid electrolyte inside of defunctionalized, hydrogenated, and aminated pores of carbide-derived carbon supercapacitor electrodes. The approach tailors surface functionalities and tunes nanoporous structures to decouple the influence of pore wall composition on capacitance, ionic resistance, and long-term cyclability. Quasi-elastic neutron scattering probes the self-diffusion properties and electrode-ion interactions of electrolyte molecules confined in functionalized pores. Room-temperature ionic liquid interactions in confined pores are strongest when the hydrogen-containing groups are present on the surface. This property translates into higher capacitance and greater ion transport through pores during electrochemical cycling. Unlike hydrogenated pores, aminated pores do not favorably interact with ionic liquid ions and, subsequently, are outperformed by defunctionalized surfaces. (C) 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of Chinese Materials Research Society.
C1 [Dyatkin, Boris; Cook, Kevin M.; Gogotsi, Yury] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
[Dyatkin, Boris; Cook, Kevin M.; Gogotsi, Yury] Drexel Univ, AJ Drexel Nanomat Inst, Philadelphia, PA 19104 USA.
[Mamontov, Eugene] Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA.
RP Gogotsi, Y (reprint author), Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
EM gogotsi@drexel.edu
RI Mamontov, Eugene/Q-1003-2015;
OI Mamontov, Eugene/0000-0002-5684-2675; Dyatkin, Boris/0000-0001-7537-2181
FU Fluid Interface Reactions, Structures and Transport (FIRST) Center, an
Energy Frontier Research Center - U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences
FX This study was supported by the Fluid Interface Reactions, Structures
and Transport (FIRST) Center, an Energy Frontier Research Center funded
by the U.S. Department of Energy, Office of Science, Office of Basic
Energy Sciences. Quasi elastic neutron scattering experiments (at ORNL)
were made available through the Scientific User Facilities Division,
Office of Basic Energy Sciences, US Department of Energy. The authors
thank Francis W. Richey and Maria R. Lukatskaya (Drexel University) for
assistance with dynamic water vapor sorption and SEM analysis.
NR 48
TC 3
Z9 3
U1 6
U2 33
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1002-0071
EI 1745-5391
J9 PROG NAT SCI-MATER
JI Prog. Nat. Sci.
PD DEC
PY 2015
VL 25
IS 6
BP 631
EP 641
DI 10.1016/j.pnsc.2015.11.007
PG 11
WC Materials Science, Multidisciplinary; Multidisciplinary Sciences
SC Materials Science; Science & Technology - Other Topics
GA DB8MX
UT WOS:000368771900013
ER
PT J
AU Zhou, XW
Ward, DK
Doty, FP
Zimmerman, JA
Wong, BM
Cruz-Campa, JL
Nielson, GN
Chavez, JJ
Zubia, D
McClure, JC
AF Zhou, Xiao Wang
Ward, Donald K.
Doty, F. Patrick
Zimmerman, Jonathan A.
Wong, Bryan M.
Cruz-Campa, Jose Luis
Nielson, Gregory N.
Chavez, Jose Juan
Zubia, David
McClure, John C.
TI A prediction of dislocation-free CdTe/CdS photovoltaic multilayers via
nano-patterning and composition grading
SO PROGRESS IN PHOTOVOLTAICS
LA English
DT Article
DE CdTe/CdS solar cells; nanostructure; molecular dynamics; bond order
potential
ID TRANSMISSION ELECTRON-MICROSCOPY; MOLECULAR-DYNAMICS SIMULATION;
BOND-ORDER POTENTIALS; FILM SOLAR-CELLS; MULTICOMPONENT SYSTEMS;
THIN-FILMS; GROWTH; DEPOSITION; SURFACE; STRAIN
AB Defects in multilayered films have long been a performance-limiting problem for the semiconductor industry. For instance, CdTe/CdS solar cell efficiencies have had significant improvement in the past 15 years or more without addressing the problem of high misfit dislocation densities. Overcoming this stagnation requires a fundamental understanding of interfacial defect formation. Herein, we demonstrate a new first principles-based CdTe bond-order approach that enables efficient molecular dynamics to approach the fidelity of density functional theory. Stringent quantum-mechanical verification and experimental validation tests reveal that our new approach provides an accurate prediction of defects that earlier methods cannot. Using this new capability, we show that misfit dislocations in CdTe/CdS multilayers can be significantly reduced via nano-patterning and composition grading and more importantly, dislocation-free multilayers naturally arise when the pattern dimension is reduced below 90 nm. Our predictive methods are generally applicable to other materials, highlighting a rational approach towards low-defect semiconductor films. Copyright (C) 2015 John Wiley & Sons, Ltd.
C1 [Zhou, Xiao Wang; Ward, Donald K.; Doty, F. Patrick; Zimmerman, Jonathan A.] Sandia Natl Labs, Livermore, CA 94550 USA.
[Wong, Bryan M.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Cruz-Campa, Jose Luis; Nielson, Gregory N.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Chavez, Jose Juan; Zubia, David; McClure, John C.] Univ Texas El Paso, El Paso, TX 79968 USA.
RP Zhou, XW (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA.
EM xzhou@sandia.gov
RI Wong, Bryan/B-1663-2009
OI Wong, Bryan/0000-0002-3477-8043
FU US Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]; DOE [EE0005859-2013Q3]
FX This work was performed, in part, at the Center for Integrated
Nanotechnologies, an Office of Science User Facility operated for the
U.S. Department of Energy Office of Science. Sandia National
Laboratories is a multiprogram laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the US Department of Energy's National Nuclear Security
Administration under Contract No. DE-AC04-94AL85000. This work was also
performed under DOE Project No. EE0005859-2013Q3.
NR 46
TC 3
Z9 3
U1 3
U2 8
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1062-7995
EI 1099-159X
J9 PROG PHOTOVOLTAICS
JI Prog. Photovoltaics
PD DEC
PY 2015
VL 23
IS 12
BP 1837
EP 1846
DI 10.1002/pip.2628
PG 10
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA DB2VV
UT WOS:000368369400016
ER
PT J
AU Bolinger, M
Weaver, S
Zuboy, J
AF Bolinger, Mark
Weaver, Samantha
Zuboy, Jarett
TI Is $50/MWh solar for real? Falling project prices and rising capacity
factors drive utility-scale PV toward economic competitiveness
SO PROGRESS IN PHOTOVOLTAICS
LA English
DT Article
DE utility-scale; capacity factor; power purchase agreement; price trends;
O&M; economic competitiveness
AB Recently announced low-priced power purchase agreements (PPAs) for US utility-scale photovoltaic (PV) projects suggest $50/MWh solar might be viable under certain conditions. To explore this possibility, this paper draws on an increasing wealth of empirical data to analyze trends in three of the most important PPA price drivers: upfront installed project prices, operations, and maintenance (O&M) costs, and capacity factors. Average installed prices among a sample of utility-scale PV projects declined by more than one third (from $5.8/W-AC to $3.7/W-AC) from the 2007-2009 period through 2013, even as costlier systems with crystalline-silicon modules, sun tracking, and higher inverter loading ratios (ILRs) have constituted an increasing proportion of total utility-scale PV capacity (all values shown here are in 2013 dollars). Actual and projected O&M costs from a very small sample of projects appear to range from $20-$40/kW(AC)-year. The average net capacity factor is 30% for projects installed in 2012, up from 24% for projects installed in 2010, owing to better solar resources, higher ILRs, and greater use of tracking among the more recent projects. Based on these trends, a pro-forma financial model suggests that $50/MWh utility-scale PV is achievable using a combination of aggressive-but-achievable technical and financial input parameters (including receipt of the 30% federal investment tax credit). Although the US utility-scale PV market is still young, the rapid progress in the key metrics documented in this paper has made PV a viable competitor against other utility-scale renewable generators, and even conventional peaking generators, in certain regions of the country. Published 2015. This article is a U.S. Government work and is in the public domain in the USA.
C1 [Bolinger, Mark; Weaver, Samantha] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Bolinger, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,MS 90-4000, Berkeley, CA 94720 USA.
EM MABolinger@lbl.gov
FU US Department of Energy's Solar Energy Technologies Office, within the
Office of Energy Efficiency and Renewable Energy [DE-AC02-05CH11231]
FX The work described in this paper was funded by the US Department of
Energy's Solar Energy Technologies Office, within the Office of Energy
Efficiency and Renewable Energy, under Contract No. DE-AC02-05CH11231.
NR 14
TC 3
Z9 3
U1 4
U2 8
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1062-7995
EI 1099-159X
J9 PROG PHOTOVOLTAICS
JI Prog. Photovoltaics
PD DEC
PY 2015
VL 23
IS 12
BP 1847
EP 1856
DI 10.1002/pip.2630
PG 10
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA DB2VV
UT WOS:000368369400017
ER
PT J
AU Bellamy, M
Puskin, J
Hertel, N
Eckerman, K
AF Bellamy, M.
Puskin, J.
Hertel, N.
Eckerman, K.
TI An empirical method for deriving RBE values associated with electrons,
photons and radionuclides
SO RADIATION PROTECTION DOSIMETRY
LA English
DT Article
ID TRACK STRUCTURE-ANALYSIS; LOW-ENERGY ELECTRONS; MAMMOGRAPHY X-RAYS;
GAMMA-RAYS; NEOPLASTIC TRANSFORMATION; BIOLOGICAL EFFECTIVENESS;
CHROMOSOME-ABERRATIONS; HUMAN-LYMPHOCYTES; LIQUID WATER; RADIATION
AB There is substantial evidence to justify using relative biological effectiveness (RBE) values of > 1 for low-energy electrons and photons. But, in the field of radiation protection, radiation associated with low linear energy transfer has been assigned a radiation weighting factor w(R) of 1. This value may be suitable for radiation protection but, for risk considerations, it is important to evaluate the potential elevated biological effectiveness of radiation to improve the quality of risk estimates. RBE values between 2 and 3 for tritium are implied by several experimental measurements. Additionally, elevated RBE values have been found for other similar low-energy radiation sources. In this work, RBE values are derived for electrons based upon the fractional deposition of absorbed dose of energies less than a few kiloelectron volts. Using this empirical method, RBE values were also derived for monoenergetic photons and 1070 radionuclides from ICRP Publication 107 for which photons and electrons are the primary emissions.
C1 [Bellamy, M.; Hertel, N.; Eckerman, K.] Oak Ridge Natl Lab, Ctr Radiat Protect Knowledge, POB 2008, Oak Ridge, TN 37831 USA.
[Puskin, J.] EPA, Ctr Sci & Technol, Radiat Protect Div, ORIA 6608J, Washington, DC 20460 USA.
RP Bellamy, M (reprint author), Oak Ridge Natl Lab, Ctr Radiat Protect Knowledge, POB 2008, Oak Ridge, TN 37831 USA.
EM bellamymb@ornl.gov
FU U.S. Environmental Protection Agency Office of Air and Radiation
FX This work was supported by the U.S. Environmental Protection Agency
Office of Air and Radiation and was prepared by Oak Ridge National
Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of
Energy.
NR 38
TC 0
Z9 0
U1 1
U2 2
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0144-8420
EI 1742-3406
J9 RADIAT PROT DOSIM
JI Radiat. Prot. Dosim.
PD DEC
PY 2015
VL 167
IS 4
BP 664
EP 670
DI 10.1093/rpd/ncu358
PG 7
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA DB3IY
UT WOS:000368405600034
PM 25636403
ER
PT J
AU Finsterle, S
AF Finsterle, Stefan
TI Practical notes on local data-worth analysis
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID GROUNDWATER-FLOW SYSTEM; SENSITIVITY-ANALYSIS; GLOBAL SENSITIVITY; MODEL
PREDICTIONS; SUBSURFACE; UNCERTAINTY; STATISTICS; VALIDATION;
REGRESSION; EARTH
AB These notes discuss the usefulness, limitations, and potential pitfalls of using sensitivity indices as a means to evaluate data worth and to guide the formulation and solution of inverse problems. A sensitivity analysis examines changes in model output variables with respect to changes in model input parameters. It appears straightforward to use this information to select influential parameters that should be subjected to estimation by inverse modeling and to identify the observations that contain information about these parameters and thus may be useful as calibration points. However, the results of such a sensitivity analysis do not account for parameter correlations and redundancies in observations and may not properly separate between calibration and prediction targets if used as criteria that guide inverse modeling; they may thus yield misleading recommendations about parameter identifiability and data worth. These issues (and some remedies) are discussed using an illustrative example, in which we examine the value of data sets potentially used for the calibration of a geothermal reservoir model. These notes highlight the importance of carefully formulating the objectives of a simulation study, which controls the setup of the inverse problem and related data needs.
C1 [Finsterle, Stefan] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Earth Sci Div, Berkeley, CA 94720 USA.
RP Finsterle, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Earth Sci Div, Berkeley, CA 94720 USA.
EM SAFinsterle@lbl.gov
RI Finsterle, Stefan/A-8360-2009
OI Finsterle, Stefan/0000-0002-4446-9906
FU U.S. Dept. of Energy [DE-AC02-05CH11231]; TOUGH Development grant
FX The constructive comments of the reviewers and Associate Editor are
greatly appreciated. This work and the implementation of the sensitivity
and data-worth analysis capabilities were supported, in part, by the
TOUGH Development grant and the U.S. Dept. of Energy under contract
DE-AC02-05CH11231. The source code of iTOUGH2 can be licensed at
http://esd.lbl.gov/TOUGH2; the input files used for the analyses are
available from the author upon request. The example discussed in this
paper was originally formulated by participants of the short course
"Introduction to Inverse Modelling of Geothermal Reservoirs using
iTOUGH2,'' held November 27 to December 2, 2014 at the University of
Auckland, New Zealand. I thank L. Magnusdottir and C. Doughty for their
review of an earlier version of the manuscript.
NR 37
TC 2
Z9 2
U1 1
U2 6
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
EI 1944-7973
J9 WATER RESOUR RES
JI Water Resour. Res.
PD DEC
PY 2015
VL 51
IS 12
BP 9904
EP 9924
DI 10.1002/2015WR017445
PG 21
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA DB3OR
UT WOS:000368421500029
ER
PT J
AU Sottile, M
Dagit, J
Zhang, DL
Hendry, G
Dechev, D
AF Sottile, Matthew
Dagit, Jason
Zhang, Deli
Hendry, Gilbert
Dechev, Damian
TI Static Analysis Techniques for Semiautomatic Synthesis of Message
Passing Software Skeletons
SO ACM TRANSACTIONS ON MODELING AND COMPUTER SIMULATION
LA English
DT Article
ID SIMULATION; SYSTEMS
AB The design of high-performance computing architectures requires performance analysis of large-scale parallel applications to derive various parameters concerning hardware design and software development. The process of performance analysis and benchmarking an application can be done in several ways with varying degrees of fidelity. One of the most cost-effective ways is to do a coarse-grained study of large-scale parallel applications through the use of program skeletons. The concept of a "program skeleton" that we discuss in this article is an abstracted program that is derived from a larger program where source code that is determined to be irrelevant is removed for the purposes of the skeleton. In this work, we develop a semiautomatic approach for extracting program skeletons based on compiler program analysis. We demonstrate correctness of our skeleton extraction process by comparing details from communication traces, as well as show the performance speedup of using skeletons by running simulations in the SST/macro simulator.
C1 [Sottile, Matthew; Dagit, Jason] Galois Inc, Res & Engn, Portland, OR 97204 USA.
[Zhang, Deli; Dechev, Damian] Univ Cent Florida, Coll Engn & Comp Sci, Harris Engn Ctr, Orlando, FL 32816 USA.
[Hendry, Gilbert; Dechev, Damian] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Sottile, M (reprint author), Galois Inc, Res & Engn, 421 SW 6th Ave,Suite 300, Portland, OR 97204 USA.
EM mjsottile@gmail.com; dagit@galois.com; de-li.zhang@knights.ucf.edu;
ghendry@sandia.gov; dechev@eecs.ucf.edu
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04- 94AL85000]
FX Sandia National Laboratories is a multiprogram laboratory operated by
Sandia Corporation, a Lockheed Martin Company, for the U.S. Department
of Energy's National Nuclear Security Administration under contract
DE-AC04- 94AL85000.
NR 22
TC 0
Z9 0
U1 0
U2 0
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 1049-3301
EI 1558-1195
J9 ACM T MODEL COMPUT S
JI ACM Trans. Model. Comput. Simul.
PD DEC
PY 2015
VL 26
IS 1
SI SI
AR 4
DI 10.1145/2778888
PG 24
WC Computer Science, Interdisciplinary Applications; Mathematics, Applied
SC Computer Science; Mathematics
GA DA6RW
UT WOS:000367933900005
ER
PT J
AU Yoginath, SB
Perumalla, KS
AF Yoginath, Srikanth B.
Perumalla, Kalyan S.
TI Efficient Parallel Discrete Event Simulation on Cloud/Virtual Machine
Platforms
SO ACM TRANSACTIONS ON MODELING AND COMPUTER SIMULATION
LA English
DT Article
DE Parallel discrete event simulation; time warp; global virtual time;
virtual machines; scheduler
ID EXECUTION
AB Cloud and Virtual Machine (VM) technologies present new challenges with respect to performance and monetary cost in executing parallel discrete event simulation (PDES) applications. Due to the introduction of overall cost as a metric, the traditional use of the highest-end computing configuration is no longer the most obvious choice. Moreover, the unique runtime dynamics and configuration choices of Cloud and VM platforms introduce new design considerations and runtime characteristics specific to PDES over Cloud/VMs. Here, an empirical study is presented to help understand the dynamics, trends, and trade-offs in executing PDES on Cloud/VM platforms. Performance and cost measures obtained from multiple PDES applications executed on the Amazon EC2 Cloud and on a high-end VM host machine reveal new, counterintuitive VM-PDES dynamics and guidelines. One of the critical aspects uncovered is the fundamental mismatch in hypervisor scheduler policies designed for general Cloud workloads versus the virtual time ordering needed for PDES workloads. This insight is supported by experimental data revealing the gross deterioration in PDES performance traceable to VM scheduling policy. To overcome this fundamental problem, the design and implementation of a new deadlock-free scheduler algorithm are presented, optimized specifically for PDES applications on VMs. The scalability of our scheduler has been tested in up to 128 VMs multiplexed on 32 cores, showing significant improvement in the runtime relative to the default Cloud/VM scheduler. The observations, algorithmic design, and results are timely for emerging Cloud/VM-based installations, highlighting the need for PDES-specific support in high-performance discrete event simulations on Cloud/VM platforms.
C1 [Yoginath, Srikanth B.; Perumalla, Kalyan S.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Yoginath, SB (reprint author), 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
OI Perumalla, Kalyan/0000-0002-7458-0832
NR 23
TC 2
Z9 2
U1 0
U2 1
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 1049-3301
EI 1558-1195
J9 ACM T MODEL COMPUT S
JI ACM Trans. Model. Comput. Simul.
PD DEC
PY 2015
VL 26
IS 1
SI SI
AR 5
DI 10.1145/2746232
PG 26
WC Computer Science, Interdisciplinary Applications; Mathematics, Applied
SC Computer Science; Mathematics
GA DA6RW
UT WOS:000367933900006
ER
PT J
AU Logue, JM
Sherman, MH
Lunden, MM
Klepeis, NE
Williams, R
Croghan, C
Singer, BC
AF Logue, J. M.
Sherman, M. H.
Lunden, M. M.
Klepeis, N. E.
Williams, R.
Croghan, C.
Singer, B. C.
TI Development and assessment of a physics-based simulation model to
investigate residential PM2.5 infiltration across the US housing stock
SO BUILDING AND ENVIRONMENT
LA English
DT Article
DE PM2.5; Indoor; Infiltration; Simulation; Residential
ID FINE PARTICULATE MATTER; AIR EXCHANGE-RATES; INDOOR ENVIRONMENT;
ASTHMATIC-CHILDREN; OUTDOOR SOURCES; HUMAN EXPOSURE; PARTICLES;
POLLUTION; DEARS; DISTRIBUTIONS
AB The Lawrence Berkeley National Laboratory Population Impact Assessment Modeling Framework (PIAMF) was expanded to enable determination of indoor PM2.5 concentrations and exposures in a set of 50,000 homes representing the US housing stock. A mass-balance model is used to calculate time-dependent pollutant concentrations within each home. The model includes size- and species-dependent removal mechanisms. The particle model was applied to the housing samples of the Relationship of Indoor, Outdoor, and Personal Air (RIOPA) and The Detroit Exposure and Aerosol Research Study (DEARS) studies to compare model- and measurement-based estimates of indoor PM2.5 of outdoor origin. Model-derived distributions of infiltration factors (ratio of indoor PM2.5 of outdoor origin to outdoor PM2.5) are compared to measurement-based distributions obtained in studies conducted in 11 US cities. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Logue, J. M.; Sherman, M. H.; Singer, B. C.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Technol Area, Berkeley, CA 94720 USA.
[Lunden, M. M.] Aclima Inc, San Francisco, CA USA.
[Klepeis, N. E.] Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA.
[Klepeis, N. E.] San Diego State Univ, San Diego State Univ Res Fdn, Grad Sch Publ Hlth, Ctr Behav Epidemiol & Community Hlth C BEACH, San Diego, CA 92182 USA.
[Williams, R.; Croghan, C.] US EPA, Human Exposure & Atmospher Sci Div, Res Triangle Pk, NC 27711 USA.
RP Logue, JM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Technol Area, Berkeley, CA 94720 USA.
EM jmlogue@lbl.gov
FU U.S. Dept. of Energy Building Technologies Program, Office of Energy
Efficiency and Renewable Energy under DOE [DE-AC02-05CH11231]; U.S.
Dept. of Housing and Urban Development Office of Healthy Homes and Lead
Hazard Control [I-PHI-01070]; U.S. Environmental Protection Agency
[DW-89-9232201-7]
FX Funding was provided by the U.S. Dept. of Energy Building Technologies
Program, Office of Energy Efficiency and Renewable Energy under DOE
Contract No. DE-AC02-05CH11231; by the U.S. Dept. of Housing and Urban
Development Office of Healthy Homes and Lead Hazard Control through
Interagency Agreement I-PHI-01070, and by the U.S. Environmental
Protection Agency through Interagency Agreement DW-89-9232201-7. We
would like to thank the Human Exposure and Atmospheric Sciences Division
of the US Environmental Protection Agency for sharing data from the
Detroit Exposure and Aerosol Research Study. We would also like to thank
the University of Medicine and Dentistry of New Jersey, Rutgers
University, the Health Effects Institute, Mickey Leland National Urban
Air Toxics Research Center, and Atmospheric and Environmental Research
for compiling and maintain an online database of measurement from the
Relationships of Indoor, Outdoor, and Personal Air database. We would
also like to thank the MESA AIR research group for providing data from
their measurement studies. The United States Environmental Protection
Agency through its Office of Research and Development has provided
administrative review of this article and approved for publication.
NR 48
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Z9 2
U1 7
U2 16
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-1323
EI 1873-684X
J9 BUILD ENVIRON
JI Build. Environ.
PD DEC
PY 2015
VL 94
BP 21
EP 32
DI 10.1016/j.buildenv.2015.06.032
PN 1
PG 12
WC Construction & Building Technology; Engineering, Environmental;
Engineering, Civil
SC Construction & Building Technology; Engineering
GA DA4GX
UT WOS:000367759300003
ER
PT J
AU Hong, TZ
D'Oca, S
Taylor-Lange, SC
Turner, WJN
Chen, YX
Corgnati, SP
AF Hong, Tianzhen
D'Oca, Simona
Taylor-Lange, Sarah C.
Turner, William J. N.
Chen, Yixing
Corgnati, Stefano P.
TI An ontology to represent energy-related occupant behavior in buildings.
Part II: Implementation of the DNAS framework using an XML schema
SO BUILDING AND ENVIRONMENT
LA English
DT Article
DE Occupant behavior; Building simulation; Energy modeling; XML schema;
Building energy consumption; obXML
ID OFFICE BUILDINGS; THERMAL COMFORT; CONTROL-SYSTEMS; MODEL; PERFORMANCE;
ENVIRONMENT; PATTERNS; BLINDS
AB Energy-related occupant behavior in buildings is difficult to define and quantify, yet critical to our understanding of total building energy consumption. Part I of this two-part paper introduced the DNAS (Drivers, Needs, Actions and Systems) framework, to standardize the description of energy-related occupant behavior in buildings. Part II of this paper implements the DNAS framework into an XML (eXtensible Markup Language) schema, titled 'occupant behavior XML' (obXML). The obXML schema is used for the practical implementation of the DNAS framework into building simulation tools. The topology of the DNAS framework implemented in the obXML schema has a main root element OccupantBehavior, linking three main elements representing Buildings, Occupants and Behaviors. Using the schema structure, the actions of turning on an air conditioner and closing blinds provide two examples of how the schema standardizes these actions using XML. The obXML schema has inherent flexibility to represent numerous, diverse and complex types of occupant behaviors in buildings, and it can also be expanded to encompass new types of behaviors. The implementation of the DNAS framework into the obXML schema will facilitate the development of occupant information modeling (OIM) by providing interoperability between occupant behavior models and building energy modeling programs. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Hong, Tianzhen; D'Oca, Simona; Taylor-Lange, Sarah C.; Turner, William J. N.; Chen, Yixing] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[D'Oca, Simona; Corgnati, Stefano P.] Politecn Torino, Dept Energy, Turin, Italy.
[Turner, William J. N.] Univ Coll Dublin, Elect Res Ctr, Dublin 2, Ireland.
RP Hong, TZ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM thong@lbl.gov
OI Hong, Tianzhen/0000-0003-1886-9137
FU United States Department of Energy under the U.S.-China Clean Energy
Research Center for Building Energy Efficiency [DE-AC02-05CH11231]
FX This work was sponsored by the United States Department of Energy
(Contract No. DE-AC02-05CH11231) under the U.S.-China Clean Energy
Research Center for Building Energy Efficiency. This work is also part
of the research activities of the International Energy Agency Energy in
Bulidings and Communities Program Annex 66, Definition and Simulation of
Occupant Behavior in Buildings.
NR 50
TC 8
Z9 9
U1 2
U2 10
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-1323
EI 1873-684X
J9 BUILD ENVIRON
JI Build. Environ.
PD DEC
PY 2015
VL 94
BP 196
EP 205
DI 10.1016/j.buildenv.2015.08.006
PN 1
PG 10
WC Construction & Building Technology; Engineering, Environmental;
Engineering, Civil
SC Construction & Building Technology; Engineering
GA DA4GX
UT WOS:000367759300017
ER
PT J
AU Arora, AS
Zafar, S
Kollmar, O
Llorens, F
Tahir, W
Vanselow, S
Kumar, P
Schmerr, MJ
Schmitz, M
Zerr, I
AF Arora, Amandeep Singh
Zafar, Saima
Kollmar, Otto
Llorens, Franc
Tahir, Waqas
Vanselow, Sven
Kumar, Prateek
Schmerr, Mary Jo
Schmitz, Matthias
Zerr, Inga
TI Application of capillary immunoelectrophoresis revealed an age- and
gender-dependent regulated expression of PrPC in liver
SO ELECTROPHORESIS
LA English
DT Article
DE Age; Capillary immunoelectrophoresis; Gender; Liver; PrPC
ID CELLULAR PRION PROTEIN; LASER-INDUCED FLUORESCENCE;
ZONE-ELECTROPHORESIS; MOUSE; ADSORPTION; TISSUES; EMBRYOS; CELLS; SHEEP;
VARY
AB The cellular prion protein (PrPC) is a glycoprotein, anchored to the plasma membrane and abundantly expressed in the central nervous system. The expression of PrPC in the peripheral tissues is low and only little information is available on its functions in the nonneuronal tissues. The antioxidant function of PrPC during the activation of hepatic stellate cells has already been reported. Therefore, the aim of the study was to expand our knowledge on the functions of PrPC by detailed characterization of its expressional profile in the liver. In a combined strategy by using capillary immunoelectrophoresis and standard techniques, we have shown a sexually dimorphic expression of PrPC in mice and human liver tissues. Further, we showed a significant age-dependent upregulation of PrPC expression in the liver of 14-and 9-month-old mice as compared to 3 months of age. Therefore, this study may provide new insights into the gender-specific role of PrPC in the liver, which may further be linked to its protective role against oxidative stress during aging. In addition, the current study also shows an application of immunoelectrophoresis with a low coefficient of variation to analyze the miniscule amount of PrPC in the mouse liver tissue.
C1 [Arora, Amandeep Singh; Zafar, Saima; Llorens, Franc; Tahir, Waqas; Vanselow, Sven; Kumar, Prateek; Schmitz, Matthias; Zerr, Inga] Univ Med Ctr Gottingen, Clin Dementia Ctr, Dept Neurol, D-37075 Gottingen, Germany.
[Arora, Amandeep Singh; Zafar, Saima; Llorens, Franc; Tahir, Waqas; Vanselow, Sven; Kumar, Prateek; Schmitz, Matthias; Zerr, Inga] German Ctr Neurodegenerat Dis DZNE, Gottingen, Germany.
[Kollmar, Otto] Univ Med Ctr Gottingen, Dept Gen Visceral & Pediat Surg, D-37075 Gottingen, Germany.
[Schmerr, Mary Jo] Iowa State Univ, US DOE, Ames Lab, Ames, IA USA.
RP Zerr, I (reprint author), Univ Med Ctr Gottingen, Clin Dementia Ctr, Dept Neurol, Robert Koch Str 40, D-37075 Gottingen, Germany.
EM ingazerr@med.uni-goettingen.de
FU EU Joint Program - Neurodegenerative Disease Research (JPND - DEMTEST)
[01ED1201A]; Robert Koch Institute through Federal Ministry of Health
[1369-341]; European Commission [222887, FP7-KBBE-2007-2A]
FX The authors acknowledge the financial support provided by grants from
the EU Joint Program - Neurodegenerative Disease Research (JPND -
DEMTEST (Biomarker based diagnosis of rapid progressive
dementias-optimization of diagnostic protocols, 01ED1201A), also partly
supported by the Robert Koch Institute through funds from the Federal
Ministry of Health (grant no. 1369-341), and by a grant from the
European Commission (Protecting the food chain from prions: shaping
European priorities through basic and applied research (PRIORITY, No.
222887) project number: FP7-KBBE-2007-2A), technical support by Katrin
Thune, Mohsin Rosemol George, Simranjit Singh Rehal, and Nadine
Gotzmann.
NR 26
TC 1
Z9 1
U1 2
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0173-0835
EI 1522-2683
J9 ELECTROPHORESIS
JI Electrophoresis
PD DEC
PY 2015
VL 36
IS 24
BP 3026
EP 3033
DI 10.1002/elps.201500244
PG 8
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA DA8BB
UT WOS:000368028200007
PM 26377521
ER
PT J
AU Sangwan, N
Lambert, C
Sharma, A
Gupta, V
Khurana, P
Khurana, JP
Sockett, RE
Gilbert, JA
Lal, R
AF Sangwan, Naseer
Lambert, Carey
Sharma, Anukriti
Gupta, Vipin
Khurana, Paramjit
Khurana, Jitendra P.
Sockett, R. Elizabeth
Gilbert, Jack A.
Lal, Rup
TI Arsenic rich Himalayan hot spring metagenomics reveal genetically novel
predator-prey genotypes
SO ENVIRONMENTAL MICROBIOLOGY REPORTS
LA English
DT Article
ID ENTEROBACTER-CLOACAE SLD1A-1; BDELLOVIBRIO-BACTERIOVORUS; SEQUENCE DATA;
PHYLOGENETIC ANALYSES; MAXIMUM-LIKELIHOOD; GENOME SEQUENCE; SEARCH TOOL;
ALIGNMENT; GENES; REDUCTION
AB Bdellovibrio bacteriovorus are small Deltaproteobacteria that invade, kill and assimilate their prey. Metagenomic assembly analysis of the microbial mats of an arsenic rich, hot spring was performed to describe the genotypes of the predator Bdellovibrio and the ecogenetically adapted taxa Enterobacter. The microbial mats were enriched with Bdellovibrio (1.3%) and several Gram-negative bacteria including Bordetella (16%), Enterobacter (6.8%), Burkholderia (4.8%), Acinetobacter (2.3%) and Yersinia (1%). A high-quality (47 contigs, 25X coverage; 3.5 Mbp) draft genome of Bdellovibrio (strain ArHS; Arsenic Hot Spring) was reassembled, which lacked the marker gene Bd0108 associated with the usual method of prey interaction and invasion for this genus, while maintaining genes coding for the hydrolytic enzymes necessary for prey assimilation. By filtering microbial mat samples (< 0.45 mu m) to enrich for small predatory cell sizes, we observed Bdellovibrio-like cells attached side-on to E. coli through electron microscopy. Furthermore, a draft pan-genome of the dominant potential host taxon, Enterobacter cloacae ArHS (4.8 Mb), along with three of its viral genotypes (n = 3; 42 kb, 49 kb and 50 kb), was assembled. These data were further used to analyse the population level evolutionary dynamics (taxonomical and functional) of reconstructed genotypes.
C1 [Sangwan, Naseer; Sharma, Anukriti; Gupta, Vipin; Lal, Rup] Univ Delhi, Dept Zool, Delhi 110007, India.
[Sangwan, Naseer; Gilbert, Jack A.] Argonne Natl Lab, Biosci Div BIO, Argonne, IL 60439 USA.
[Lambert, Carey; Sockett, R. Elizabeth] Univ Nottingham, Inst Genet, Sch Life Sci, Queens Med Ctr, Nottingham NG7 2RD, England.
[Khurana, Paramjit; Khurana, Jitendra P.] Univ Delhi, Interdisciplinary Ctr Plant Genom, New Delhi 110021, India.
[Khurana, Paramjit; Khurana, Jitendra P.] Univ Delhi, Dept Plant Mol Biol, New Delhi 110021, India.
[Gilbert, Jack A.] Univ Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USA.
[Gilbert, Jack A.] Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China.
RP Lal, R (reprint author), Univ Delhi, Dept Zool, Delhi 110007, India.
EM ruplal@gmail.com
FU Government of India under the project, National Bureau of Agriculturally
Important Microorganisms (NBAIM) [AMASS/2006-07/NBAIM/CIR]; University
of Delhi/Department of Science and Technology Promotion of University
Research and Scientific Excellence (PURSE)-DU DST - PURSE GRANT
Department of Biotechnology (DBT); Council for Scientific and Industrial
Research (CSIR); National Bureau of Agriculturally Important
Microorganisms (NBAIM); Alexander von Humboldt Fellowship
FX We thank Scott Fendorf Department of Environmental Earth System Science,
Stanford University, California for geochemical analysis of the samples.
The work was supported by Grants from Government of India under the
project, National Bureau of Agriculturally Important Microorganisms
(NBAIM) AMASS/2006-07/NBAIM/CIR, the University of Delhi/Department of
Science and Technology Promotion of University Research and Scientific
Excellence (PURSE)-DU DST - PURSE GRANT Department of Biotechnology
(DBT). NS, VG and AS gratefully acknowledge the Council for Scientific
and Industrial Research (CSIR) and the National Bureau of Agriculturally
Important Microorganisms (NBAIM) for providing research fellowships.
This paper was revised during a renewed visit under an Alexander von
Humboldt Fellowship (at the University of Freiburg, Germany) awarded to
RL.
NR 56
TC 8
Z9 8
U1 4
U2 11
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1758-2229
J9 ENV MICROBIOL REP
JI Environ. Microbiol. Rep.
PD DEC
PY 2015
VL 7
IS 6
BP 812
EP 823
DI 10.1111/1758-2229.12297
PG 12
WC Environmental Sciences; Microbiology
SC Environmental Sciences & Ecology; Microbiology
GA DA9NL
UT WOS:000368136100001
PM 25953741
ER
PT J
AU Beck, MW
Hagy, JD
AF Beck, Marcus W.
Hagy, James D., III
TI Adaptation of a Weighted Regression Approach to Evaluate Water Quality
Trends in an Estuary
SO ENVIRONMENTAL MODELING & ASSESSMENT
LA English
DT Article
DE Trend analysis; Weighted regression; Estuary; Chlorophyll; Salinity;
Tampa Bay
ID QUANTILE REGRESSION; CHESAPEAKE BAY; PHYTOPLANKTON BIOMASS; TAMPA BAY;
EUTROPHICATION; FLORIDA; MODEL; RIVER; REDUCTIONS; ECOSYSTEMS
AB To improve the description of long-term changes in water quality, a weighted regression approach developed to describe trends in pollutant transport in rivers was adapted to analyze a long-term water quality dataset from Tampa Bay, Florida. The weighted regression approach allows for changes in the relationships between water quality and explanatory variables by using dynamic model parameters and can more clearly resolve the effects of both natural and anthropogenic drivers of ecosystem response. The model resolved changes in chlorophyll-a (chl-a) from 1974 to 2012 at seasonal and multi-annual time scales while considering variation associated with changes in freshwater influence. Separate models were developed for each of the four Bay segments to evaluate spatial differences in patterns of long-term change. Observed trends reflected the known decrease in nitrogen loading to Tampa Bay since the 1970s. Although median chl-a has remained constant in recent decades, model predictions indicated that variation has increased for upper Bay segments and that low biomass events in the lower Bay occur less often. Dynamic relationships between chl-a and freshwater inputs were observed from the model predictions and suggested changes in drivers of primary production across the time series. Results from our analyses have allowed additional insight into water quality changes in Tampa Bay that has not been possible with traditional modeling approaches. The approach could easily be applied to other systems with long-term datasets.
C1 [Beck, Marcus W.] US EPA, ORISE Res Participat Program, Natl Hlth & Environm Effects Res Lab, Gulf Ecol Div, Gulf Breeze, FL 32561 USA.
[Hagy, James D., III] US EPA, Natl Hlth & Environm Effects Res Lab, Gulf Ecol Div, Gulf Breeze, FL 32561 USA.
RP Beck, MW (reprint author), US EPA, ORISE Res Participat Program, Natl Hlth & Environm Effects Res Lab, Gulf Ecol Div, 1 Sabine Isl Dr, Gulf Breeze, FL 32561 USA.
EM beck.marcus@epa.gov; hagy.jim@epa.gov
NR 44
TC 2
Z9 2
U1 3
U2 9
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1420-2026
EI 1573-2967
J9 ENVIRON MODEL ASSESS
JI Environ. Model. Assess.
PD DEC
PY 2015
VL 20
IS 6
BP 637
EP 655
DI 10.1007/s10666-015-9452-8
PG 19
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA DA5YW
UT WOS:000367879600006
ER
PT J
AU Althouse, BM
Scarpino, SV
Meyers, LA
Ayers, JW
Bargsten, M
Baumbach, J
Brownstein, JS
Castro, L
Clapham, H
Cummings, DAT
Del Valle, S
Eubank, S
Fairchild, G
Finelli, L
Generous, N
George, D
Harper, DR
Hebert-Dufresne, L
Johansson, MA
Konty, K
Lipsitch, M
Milinovich, G
Miller, JD
Nsoesie, EO
Olson, DR
Paul, M
Polgreen, PM
Priedhorsky, R
Read, JM
Rodriguez-Barraquer, I
Smith, DJ
Stefansen, C
Swerdlow, DL
Thompson, D
Vespignani, A
Wesolowski, A
AF Althouse, Benjamin M.
Scarpino, Samuel V.
Meyers, Lauren Ancel
Ayers, John W.
Bargsten, Marisa
Baumbach, Joan
Brownstein, John S.
Castro, Lauren
Clapham, Hannah
Cummings, Derek A. T.
Del Valle, Sara
Eubank, Stephen
Fairchild, Geoffrey
Finelli, Lyn
Generous, Nicholas
George, Dylan
Harper, David R.
Hebert-Dufresne, Laurent
Johansson, Michael A.
Konty, Kevin
Lipsitch, Marc
Milinovich, Gabriel
Miller, Joseph D.
Nsoesie, Elaine O.
Olson, Donald R.
Paul, Michael
Polgreen, Philip M.
Priedhorsky, Reid
Read, Jonathan M.
Rodriguez-Barraquer, Isabel
Smith, Derek J.
Stefansen, Christian
Swerdlow, David L.
Thompson, Deborah
Vespignani, Alessandro
Wesolowski, Amy
TI Enhancing disease surveillance with novel data streams: challenges and
opportunities
SO EPJ DATA SCIENCE
LA English
DT Article
DE disease surveillance; novel data streams; digital surveillance
ID INFECTIOUS-DISEASES; PREDICTION
AB Novel data streams (NDS), such as web search data or social media updates, hold promise for enhancing the capabilities of public health surveillance. In this paper, we outline a conceptual framework for integrating NDS into current public health surveillance. Our approach focuses on two key questions: What are the opportunities for using NDS and what are the minimal tests of validity and utility that must be applied when using NDS? Identifying these opportunities will necessitate the involvement of public health authorities and an appreciation of the diversity of objectives and scales across agencies at different levels (local, state, national, international). We present the case that clearly articulating surveillance objectives and systematically evaluating NDS and comparing the performance of NDS to existing surveillance data and alternative NDS data is critical and has not sufficiently been addressed in many applications of NDS currently in the literature.
C1 [Althouse, Benjamin M.; Scarpino, Samuel V.; Meyers, Lauren Ancel; Hebert-Dufresne, Laurent] Santa Fe Inst, Santa Fe, NM 87501 USA.
[Meyers, Lauren Ancel] Univ Texas Austin, Austin, TX 78712 USA.
[Ayers, John W.] San Diego State Univ, San Diego, CA 92182 USA.
[Bargsten, Marisa; Baumbach, Joan; Thompson, Deborah] New Mexico Dept Hlth, Santa Fe, NM USA.
[Brownstein, John S.; Nsoesie, Elaine O.] Boston Childrens Hosp, Childrens Hosp Informat Program, Boston, MA USA.
[Brownstein, John S.; Nsoesie, Elaine O.] Harvard Univ, Sch Med, Dept Pediat, Boston, MA 02115 USA.
[Brownstein, John S.] McGill Univ, Dept Epidemiol Biostat & Occupat Hlth, Montreal, PQ, Canada.
[Castro, Lauren; Del Valle, Sara; Fairchild, Geoffrey; Generous, Nicholas; Priedhorsky, Reid] Los Alamos Natl Lab, Def Syst & Anal Div, Los Alamos, NM USA.
[Clapham, Hannah; Cummings, Derek A. T.; Rodriguez-Barraquer, Isabel] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Epidemiol, Baltimore, MD USA.
[Eubank, Stephen] Virginia Tech, Virginia BioInformat Inst, Blacksburg, VA USA.
[Eubank, Stephen] Virginia Tech, Dept Populat Hlth Sci, Blacksburg, VA USA.
[Finelli, Lyn] Ctr Dis Control & Prevent, Influenza Div, Atlanta, GA USA.
[George, Dylan] US Dept HHS, BARDA, ASPR, Washington, DC 20201 USA.
[Harper, David R.] Chatham House, London SW1Y 4LE, England.
[Johansson, Michael A.] Ctr Dis Control & Prevent, Div Vector Borne Dis, NCEZID, San Juan, PR USA.
[Konty, Kevin; Olson, Donald R.] New York City Dept Hlth & Mental Hyg, Div Epidemiol, New York, NY USA.
[Lipsitch, Marc; Wesolowski, Amy] Harvard Univ, Sch Publ Hlth, Communicable Dis Dynam, Boston, MA 02115 USA.
[Milinovich, Gabriel] Univ Queensland, Sch Populat Hlth, Brisbane, Qld, Australia.
[Miller, Joseph D.] Ctr Dis Control & Prevent, Div Vector Borne Dis, NCEZID, Atlanta, GA USA.
[Paul, Michael] Johns Hopkins Univ, Dept Comp Sci, Baltimore, MD 21218 USA.
[Polgreen, Philip M.] Univ Iowa, Iowa City, IA USA.
[Read, Jonathan M.] Univ Liverpool, Inst Infect & Global Hlth, Dept Epidemiol & Populat Hlth, Liverpool CH64 7TE, Merseyside, England.
[Read, Jonathan M.] NIHR, Hlth Protect Res Unit Emerging & Zoonot Infect, Liverpool L69 7BE, Merseyside, England.
[Smith, Derek J.] Univ Cambridge, Dept Zool, Cambridge CB2 3EJ, England.
[Stefansen, Christian] Google Inc, Mountain View, CA USA.
[Swerdlow, David L.] Ctr Dis Control & Prevent, Natl Ctr Immunizat & Resp Dis, Atlanta, GA USA.
[Vespignani, Alessandro] Northeastern Univ, Lab Modeling Biol & Sociotech Syst, Boston, MA 02115 USA.
RP Althouse, BM (reprint author), Santa Fe Inst, Santa Fe, NM 87501 USA.
EM althouse@santafe.edu; scarpino@santafe.edu
OI Read, Jonathan/0000-0002-9697-0962
FU Santa Fe Institute; NIH MIDAS Center of Excellence at the Harvard Center
for Communicable Disease Dynamics; Frumkin Falco Family Foundation;
Omidyar Group
FX This publication arose from a Santa Fe Institute workshop entitled,
"Next Generation Surveillance for the Next Pandemic." We wish to thank
the attendees of this workshop, held May 18th-22nd, 2014 at the Santa Fe
Insitute in Santa Fe NM, USA. We also gratefully acknowledge funding
from the Santa Fe Institute, the NIH MIDAS Center of Excellence at the
Harvard Center for Communicable Disease Dynamics, William Sick, Mike
Frumkin and the Frumkin Falco Family Foundation. BMA and SVS also
acknowledge support from the Santa Fe Institute and the Omidyar Group.
Approved for public release LA-UR-14-25873.
NR 36
TC 5
Z9 5
U1 8
U2 11
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 2193-1127
J9 EPJ DATA SCI
JI EPJ Data Sci.
PD DEC
PY 2015
VL 4
IS 1
AR 17
DI 10.1140/epjds/s13688-015-0054-0
PG 8
WC Mathematics, Interdisciplinary Applications; Social Sciences,
Mathematical Methods
SC Mathematics; Mathematical Methods In Social Sciences
GA DA8QE
UT WOS:000368069900017
ER
PT J
AU Mao, HN
Shuai, X
Ahn, YY
Bollen, J
AF Mao, Huina
Shuai, Xin
Ahn, Yong-Yeol
Bollen, Johan
TI Quantifying socio-economic indicators in developing countries from
mobile phone communication data: applications to Cote d'Ivoire
SO EPJ DATA SCIENCE
LA English
DT Article
DE mobile phone data; network analysis; big data analysis; socio-economic
measurement; developing countries; economic development
ID COMPLEX NETWORKS; PATTERNS; SEARCH
AB The widespread adoption of mobile devices that record the communications, social relations, and movements of billions of individuals in great detail presents unique opportunities for the study of social structures and human dynamics at very large scales. This is particularly the case for developing countries where social and economic data can be hard to obtain and is often too sparse for real-time analytics. Here we leverage mobile call log data from Cote d'Ivoire to analyze the relations between its nation-wide communications network and the socio-economic dynamics of its regional economies. We introduce the CallRank indicator to quantify the relative importance of an area on the basis of call records, and show that a region's ratio of in- and out-going calls can predict its income level. We detect a communication divide between rich and poor regions of Cote d'Ivoire, which corresponds to existing socio-economic data. Our results demonstrate the potential of mobile communication data to monitor the economic development and social dynamics of low-income developing countries in the absence of extensive econometric and social data. Our work may support efforts to stimulate sustainable economic development and to reduce poverty and inequality.
C1 [Mao, Huina] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
[Shuai, Xin] Thomson Reuters, St Paul, MN USA.
[Ahn, Yong-Yeol; Bollen, Johan] Indiana Univ, Sch Informat & Comp, Bloomington, IN USA.
RP Mao, HN (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
EM maoh@ornl.gov
FU U.S. Department of Energy [DE-AC05-00OR22725]
FX At least one or more of the authors of this manuscript are employees of
UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S.
Department of Energy. Accordingly, the United States Government retains
and the publisher, by accepting the article for publication,
acknowledges that the United States Government retains a non-exclusive,
paid-up, irrevocable, world-wide license to publish or reproduce the
published form of this manuscript, or allow others to do so, for United
States Government purposes. The work was conducted while Huina Mao and
Xin Shuai were with Indiana University.
NR 36
TC 1
Z9 1
U1 3
U2 8
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 2193-1127
J9 EPJ DATA SCI
JI EPJ Data Sci.
PD DEC
PY 2015
VL 4
IS 1
AR 15
DI 10.1140/epjds/s13688-015-0053-1
PG 16
WC Mathematics, Interdisciplinary Applications; Social Sciences,
Mathematical Methods
SC Mathematics; Mathematical Methods In Social Sciences
GA DA8QE
UT WOS:000368069900015
ER
PT J
AU Aznar, F
Castel, J
Christensen, FE
Dafni, T
Decker, TA
Ferrer-Ribas, E
Garcia, JA
Giomataris, I
Garza, JG
Hailey, CJ
Hill, RM
Iguaz, FJ
Irastorza, IG
Jakobsen, AC
Luzon, G
Mirallas, H
Papaevangelou, T
Pivovaroff, MJ
Ruz, J
Vafeiadis, T
Vogel, JK
AF Aznar, F.
Castel, J.
Christensen, F. E.
Dafni, T.
Decker, T. A.
Ferrer-Ribas, E.
Garcia, J. A.
Giomataris, I.
Garza, J. G.
Hailey, C. J.
Hill, R. M.
Iguaz, F. J.
Irastorza, I. G.
Jakobsen, A. C.
Luzon, G.
Mirallas, H.
Papaevangelou, T.
Pivovaroff, M. J.
Ruz, J.
Vafeiadis, T.
Vogel, J. K.
TI A Micromegas-based low-background x-ray detector coupled to a
slumped-glass telescope for axion research
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE axions; dark matter detectors; dark matter experiments; X-ray telescopes
ID TIME PROJECTION CHAMBERS; CP CONSERVATION; PARTICLES; READOUT; MIRRORS;
CAST
AB We report on the design, construction and operation of a low background x-ray detection line composed of a shielded Micromegas detector of the microbulk technology. The detector is made from radiopure materials and is placed at the focal point of a similar to 5 cm diameter, 1.5 m focal-length, cone-approximation Wolter I x-ray telescope (XRT) assembled from thermally-formed (or "slumped") glass substrates deposited with multilayer coatings. The system has been conceived as a technological pathfinder for the future International Axion Observatory (IAXO), as it combines two of the techniques (optic and detector) proposed in the conceptual design of the project. It is innovative for two reasons: it is the first time an x-ray optic has been designed and fabricated specifically for axion research, and the first time a Micromegas detector has been operated with an x-ray optic. The line has been installed at one end of the CERN Axion Solar Telescope (CAST) magnet and is currently looking for solar axions. The combination of the XRT and Micromegas detector provides the best signal-to-noise ratio obtained so far by any detection system of the CAST experiment with a background rate of 5.4 x 10(-3) counts per hour in the energy region-of-interest and signal spot area.
C1 [Aznar, F.; Castel, J.; Dafni, T.; Garcia, J. A.; Garza, J. G.; Iguaz, F. J.; Irastorza, I. G.; Luzon, G.; Mirallas, H.] Univ Zaragoza, Grp Fis Nucl & Astroparticulas, E-50009 Zaragoza, Spain.
[Christensen, F. E.; Jakobsen, A. C.] Tech Univ Denmark, Natl Space Inst, DTU Space, DK-2800 Lyngby, Denmark.
[Decker, T. A.; Hill, R. M.; Pivovaroff, M. J.; Ruz, J.; Vogel, J. K.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Ferrer-Ribas, E.; Giomataris, I.; Papaevangelou, T.] CEA, IRFU, Ctr Etud Nucl Saclay, Gif Sur Yvette, France.
[Hailey, C. J.] Columbia Univ, Dept Phys, New York, NY 10027 USA.
[Hailey, C. J.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Vafeiadis, T.] Aristotle Univ Thessaloniki, Thessaloniki 54124, Greece.
RP Dafni, T (reprint author), Univ Zaragoza, Grp Fis Nucl & Astroparticulas, C-P Cerbuna 12, E-50009 Zaragoza, Spain.
EM faznar@unizar.es; jfcastel@unizar.es; finn@space.dtu.dk;
tdafni@unizar.es; decker4@llnl.gov; esther.ferrer-ribas@cea.fr;
jagarpas@unizar.es; ioanis.giomataris@cern.ch; jgraciag@unizar.es;
chuckh@astro.columbia.edu; runnemrand@yahoo.com; iguaz@unizar.es;
igor.irastorza@cern.ch; jakobsen@space.dtu.dk; luzon@unizar.es;
mirallas@unizar.es; thomas.papaevangelou@cea.fr; pivovaroff1@llnl.gov;
ruzarmendari1@llnl.gov; Theodoros.Vafeiadis@cern.ch; vogel9@llnl.gov
RI Gracia Garza, Javier/F-5713-2016; Irastorza, Igor/B-2085-2012;
Papaevangelou, Thomas/G-2482-2016; Aznar, Francisco/K-7807-2014; Iguaz
Gutierrez, Francisco Jose/F-4117-2016; Dafni, Theopisti/J-9646-2012
OI Gracia Garza, Javier/0000-0003-0800-1588; Irastorza,
Igor/0000-0003-1163-1687; Papaevangelou, Thomas/0000-0003-2829-9158;
Aznar, Francisco/0000-0003-3629-0540; Iguaz Gutierrez, Francisco
Jose/0000-0001-6327-9369; Dafni, Theopisti/0000-0002-8921-910X
FU European Commission under the European Research Council T-REX Starting
Grant [ERC-2009-StG-240054]; Spanish Ministry MINECO [FPA2008-03456,
FPA2011-24058]; CPAN project from the Consolider-Ingenio program
[C5D2007-00042]; European Regional Development funded (ERDF/FEDER); U.S.
Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Juan de la Cierya program; Ramon y Cajal program of
MICINN
FX We thank our colleagues at CAST for many years of collaborative work and
R. de Oliveira and his team at CERN for the manufacturing of the
microbulk readouts. We also thank D. Calvet from CEA/Saclay for his help
with the AFTER electronics. We acknowledge the support from the European
Commission under the European Research Council T-REX Starting Grant ref.
ERC-2009-StG-240054 of the IDEAS program of the 7th EU Framework
Program. We also acknowledge support from the Spanish Ministry MINECO
under contracts ref. FPA2008-03456 and FPA2011-24058, as well as under
the CPAN project ref. C5D2007-00042 from the Consolider-Ingenio 2010
program. These grants are partially funded by the European Regional
Development funded (ERDF/FEDER). Part of this work was performed under
the auspices of the U.S. Department of Energy by Lawrence Livermore
National Laboratory under Contract DE-AC52-07NA27344. F.I. acknowledges
the support from the Juan de la Cierya program and T.D. from the Ramon y
Cajal program of MICINN.
NR 50
TC 4
Z9 4
U1 2
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD DEC
PY 2015
IS 12
AR 008
DI 10.1088/1475-7516/2015/12/008
PG 21
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA DA6AR
UT WOS:000367884600008
ER
PT J
AU Bertoni, B
Hooper, D
Linden, T
AF Bertoni, Bridget
Hooper, Dan
Linden, Tim
TI Examining The Fermi-LAT Third Source Catalog in search of dark matter
subhalos
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE dark matter theory; gamma ray experiments
ID GAMMA-RAY PULSARS; ANNIHILATION SIGNAL; EVOLUTION; EMISSION; HALOES
AB Dark matter annihilations taking place in nearby subhalos could appear as gamma-ray sources without detectable counterparts at other wavelengths. In this study, we consider the collection of unassociated gamma-ray sources reported by the Fermi Collaboration in an effort to identify the most promising dark matter subhalo candidates. While we identify 24 bright, high-latitude, non-variable sources with spectra that are consistent with being generated by the annihilations of similar to 20-70 GeV dark matter particles (assuming annihilations to b (b) over bar), it is not possible at this time to distinguish these sources from radio-faint gamma-ray pulsars. Deeper multi-wavelength observations will be essential to clarify the nature of these sources. It is notable that we do not find any such sources that are well fit by dark matter particles heavier than similar to 100 GeV. We also study the angular distribution of the gamma-rays from this set of subhalo candidates, and find that the source 3FGL J2212.5+0703 prefers a spatially extended profile (of width similar to 0.15 degrees) over that of a point source, with a significance of 4.2 sigma (3.6 sigma after trials factor). Although not yet definitive, this bright and high-latitude gamma-ray source is well fit as a nearby subhalo of m(chi) similar or equal to 20-50 GeV dark matter particles (annihilating to b (b) over bar) and merits further multi-wavelength investigation. Based on the subhalo distribution predicted by numerical simulations, we derive constraints on the dark matter annihilation cross section that are competitive to those resulting from gamma-ray observations of dwarf spheroidal galaxies, the Galactic Center, and the extragalactic gamma-ray background.
C1 [Bertoni, Bridget] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Bertoni, Bridget] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA.
[Hooper, Dan] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
[Hooper, Dan] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Linden, Tim] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
RP Bertoni, B (reprint author), Univ Washington, Dept Phys, Seattle, WA 98195 USA.
EM bbertoni@stanford.edu; dhooper@fnal.gov; linden.70@osu.edu
FU US Department of Energy Office of Science Graduate Student Research
(SCGSR) Program [DE-AC05-06OR23100]; U.S. Department of Energy
[DE-FG02-00ER41132, DE-SC0011637]; US Department of Energy
[DE-FG02-13ER41958]; Fermi Research Alliance, LLC [DE- AC02-07CH11359];
US Department of Energy; National Aeronautics and Space Administration
through Einstein Postdoctoral Fellowship [PF3-140110]
FX We would like to thank Alex Drlica-Wagner for valuable discussions. BB
is supported by the US Department of Energy Office of Science Graduate
Student Research (SCGSR) Program under Contrast No. DE-AC05-06OR23100
and the U.S. Department of Energy under Contract Nos. DE-FG02-00ER41132
and DE-SC0011637. DH is supported by the US Department of Energy under
contract DE-FG02-13ER41958. Fermi lab is operated by Fermi Research
Alliance, LLC, under Contract No. DE- AC02-07CH11359 with the US
Department of Energy. TL is supported by the National Aeronautics and
Space Administration through Einstein Postdoctoral Fellowship Award No.
PF3-140110.
NR 44
TC 8
Z9 8
U1 1
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD DEC
PY 2015
IS 12
AR 035
DI 10.1088/1475-7516/2015/12/035
PG 21
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA DA6AR
UT WOS:000367884600035
ER
PT J
AU Cholis, I
Evoli, C
Calore, F
Linden, T
Weniger, C
Hooper, D
AF Cholis, Ilias
Evoli, Carmelo
Calore, Francesca
Linden, Tim
Weniger, Christoph
Hooper, Dan
TI The Galactic Center GeV excess from a series of leptonic cosmic-ray
outbursts
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE gamma ray theory; cosmic ray theory
ID HIGH-ENERGY ELECTRONS; MASSIVE BLACK-HOLE; DARK-MATTER HALOES; FERMI
BUBBLES; DENSITY PROFILE; GALAXY; HAZE; BREMSSTRAHLUNG; DIFFUSION;
PROPAGATION
AB It has been proposed that a recent out burst of cosmic-ray electrons could account for the excess of GeV-scale gamma rays observed from the region surrounding the Galactic Center. After studying this possibility in some detail, we identify scenarios in which a series of leptonic cosmic-ray outbursts could plausibly generate the observed excess. The morphology of the emission observed outside of similar to 1 degrees - 2 degrees from the Galactic Center can be accommodated with two outbursts, one which took place approximately similar to 10(6) years ago, and another (injecting only about 10% as much energy as the first) about similar to 10(5) years ago. The (emission observed from the innermost similar to 1 degrees - 2 degrees requires one or more additional recent outbursts and/or a contribution from a centrally concentrated population of unresolved millisecond pulsars. In order to produce a spectrum that is compatible with the measured excess (whose shape is approximately uniform over the region of the excess), the electrons from the older outburst must be injected with significantly greater average energy than those injected more recently, enabling their spectra to be similar after similar to 10(6) years of energy losses.
C1 [Cholis, Ilias] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Cholis, Ilias; Hooper, Dan] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
[Evoli, Carmelo] Univ Hamburg, Inst Theoret Phys, D-22761 Hamburg, Germany.
[Evoli, Carmelo] Gran Sasso Sci Inst, I-67100 Laquila, Italy.
[Calore, Francesca; Weniger, Christoph] Univ Amsterdam, GRAPPA, NL-1090 GL Amsterdam, Netherlands.
[Linden, Tim] Ohio State Univ, Ctr Cosmol & AstroParticle Phys CCAPP, Columbus, OH 43210 USA.
[Linden, Tim] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Linden, Tim] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Hooper, Dan] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
RP Cholis, I (reprint author), Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
EM cholis@fnal.gov; carmelo.evoli@desy.de; f.calore@uva.nl;
trlinden@uchicago.edu; c.weniger@uva.nl; dhooper@fnal.gov
OI Evoli, Carmelo/0000-0002-6023-5253; Cholis, Ilias/0000-0002-3805-6478
FU US Department of Energy; Helmholtz Alliance for Astroparticle Physics
HA; Initiative and Networking Fund of the Helmholtz Association;
European Research Council through the ERC starting grant WIMPs Kairos;
National Aeronautics and Space Administration through Einstein
Postdoctoral Fellowship [PF3-140110]; Netherlands Organisation for
Scientific Research (NWO); US Department of Energy [DE-FG02-13ER41958,
DE- AC02-07CH11359]; University of Chicago Research Computing Center
FX We would like to thank John Beacom, Gianfranco Bertone, Sera Markoff and
Andrew Taylor for fruitful discussions. IC is supported by the US
Department of Energy, and would like to thank the Korean Institute for
Advanced Study (KIAS) for their hospitality during the progression of
this work. CE acknowledges support from the "Helmholtz Alliance for
Astroparticle Physics HA", funded by the Initiative and Networking Fund
of the Helmholtz Association. FC is supported by the European Research
Council through the ERC starting grant WIMPs Kairos, P.I. G. Bertone. TL
is supported by the National Aeronautics and Space Administration
through Einstein Postdoctoral Fellowship Award No. PF3-140110. CW is
P.I. of the VIDI research programme "Probing the Genesis of Dark
Matter", which is financed by the Netherlands Organisation for
Scientific Research (NWO). DU is supported by the US Department of
Energy under contract DE-FG02-13ER41958. Fermilab is operated by Fermi
Research Alliance, LLC, under Contract No. DE- AC02-07CH11359 with the
US Department of Energy. This work has made use of SciPy [94],
PyFITS,7 PyMinuit,8 IPython [95], and HEALPix
[96]. We acknowledge the University of Chicago Research Computing Center
for providing support for this work.
NR 94
TC 26
Z9 26
U1 3
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD DEC
PY 2015
IS 12
AR 005
DI 10.1088/1475-7516/2015/12/005
PG 30
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA DA6AR
UT WOS:000367884600005
ER
PT J
AU Co, RT
D'Eramo, F
Hall, LJ
Pappadopulo, D
AF Co, Raymond T.
D'Eramo, Francesco
Hall, Lawrence J.
Pappadopulo, Duccio
TI Freeze-In dark matter with displaced signatures at colliders
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE dark matter theory; dark matter experiments; particle physics -
cosmology connection; cosmology of theories beyond the SM
ID BREAKING; AXINOS
AB Dark matter, X, may be generated by new physics at the TeV scale during an early matter-dominated (MD) era that ends at temperature T-R << TeV. Compared to the conventional radiation-dominated (RD) results, yields from both Freeze-Out and Freeze-In processes are greatly suppressed by dilution from entropy production, making Freeze-Out less plausible while allowing successful Freeze-In with a much larger coupling strength. Freeze-In is typically dominated by the decay of a particle B of the thermal bath, B -> X. For a large fraction of the relevant cosmological parameter space, the decay rate required to produce the observed dark matter abundance leads to displaced signals at LHC and future colliders, for any m(X) in the range keV < m(X) < m(B) and for values of m(B) accessible to these colliders. This result applies whether the early MD era arises after conventional inflation, when T-R is the usual reheat temperature, or is a generic MD era with an alternative origin. In the former case, if m(X) is sufficiently large to be measured from kinematics, the reheat temperature T-R can be extracted. Our result is independent of the particular particle physics implementation of B -> X, and can occur via any operator of dimension less than 8 (4) for a post-inflation (general MD) cosmology. An interesting example is provided by DFS axion theories with TeV-scale supersymmetry and axino dark matter of mass GeV to TeV, which is typically overproduced in a conventional RD cosmology. If B is the higgsino, (h) over tilde, Higgs, W and Z particles appear at the displaced decays, (h) over tilde -> h (a) over tilde, Z (a) over tilde and (h) over tilde (+/-) W-+/-(a) over tilde. The scale of axion physics, f, is predicted to be in the range (3 x 10(8) - 10(12)) GeV and, over much of this range, can be extracted from the decay length.
C1 [Co, Raymond T.] Univ Calif Berkeley, Dept Phys, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
RP Co, RT (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
EM co@berkeley.edu; fderamo@ucsc.edu; ljhall@lbl.gov;
duccio.pappadopulo@gmail.com
OI D'Eramo, Francesco/0000-0001-8499-7685; Co, Raymond/0000-0002-8395-7056
FU Office of Science, Office of High Energy and Nuclear Physics, of the US
Department of Energy [DE-AC02-05CH11231]; National Science Foundation
[PHY-1002399, PHY-1316783]; Miller Institute for Basic Research in
Science; National Science Foundation Graduate Research Fellowship [DGE
1106400]
FX This work was supported in part by the Director, Office of Science,
Office of High Energy and Nuclear Physics, of the US Department of
Energy under Contract DE-AC02-05CH11231 and by the National Science
Foundation under grants PHY-1002399 and PHY-1316783. F.D. is supported
by the Miller Institute for Basic Research in Science. R.C. is supported
by the National Science Foundation Graduate Research Fellowship under
Grant No. DGE 1106400.
NR 46
TC 6
Z9 6
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD DEC
PY 2015
IS 12
AR 024
DI 10.1088/1475-7516/2015/12/024
PG 28
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA DA6AR
UT WOS:000367884600024
ER
PT J
AU Gluscevic, V
Gresham, MI
McDermott, SD
Peter, AHG
Zurek, KM
AF Gluscevic, Vera
Gresham, Moira I.
McDermott, Samuel D.
Peter, Annika H. G.
Zurek, Kathryn M.
TI Identifying the theory of dark matter with direct detection
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE dark matter theory; dark matter simulations; dark matter experiments
ID MODEL; PHYSICS
AB Identifying the true theory of dark matter depends crucially on accurately characterizing interactions of dark matter (DM) with other species. In the context of DM direct detection, we present a study of the prospects for correctly identifying the low-energy effective DM-nucleus scattering operators connected to UV-complete models of DM-quark interactions. We take a census of plausible UV-complete interaction models with different low-energy leading-order DM-nuclear responses. For each model (corresponding to different spin, momentum, and velocity-dependent responses), we create a large number of realizations of recoil-energy spectra, and use Bayesian methods to investigate the probability that experiments will be able to select the correct scattering model within a broad set of competing scattering hypotheses. We conclude that agnostic analysis of a strong signal (such as Generation-2 would see if cross sections are just below the current limits) seen on xenon and germanium experiments is likely to correctly identify momentum dependence of the dominant response, ruling out models with either "heavy" or "light" mediators, and enabling down-selection of allowed models. However, a unique determination of the correct UV completion will critically depend on the availability of measurements from a wider variety of nuclear targets, including iodine or fluorine. We investigate how model-selection prospects depend on the energy window available for the analysis. In addition, we discuss accuracy of the DM particle mass determination under a wide variety of scattering models, and investigate impact of the specific types of particle-physics uncertainties on prospects for model selection.
C1 [Gluscevic, Vera] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA.
[Gresham, Moira I.] Whitman Coll, Walla Walla, WA 99362 USA.
[McDermott, Samuel D.] CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA.
[Peter, Annika H. G.] Ohio State Univ, CCAPP, Columbus, OH 43210 USA.
[Peter, Annika H. G.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Peter, Annika H. G.] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA.
[Zurek, Kathryn M.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
[Zurek, Kathryn M.] Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
RP Gluscevic, V (reprint author), Inst Adv Study, Sch Nat Sci, Einstein Dr, Princeton, NJ 08540 USA.
EM verag@ias.edu; gresham@whitman.edu; samuel.mcdermott@stonybrook.edu;
apeter@physics.osu.edu; kzurek@berkeley.edu
OI Peter, Annika/0000-0002-8040-6785
FU Murdock Charitable Trust; Friends of the Institute for Advanced Study in
Princeton; National Science Foundation [PHY-1066293]; NSF [PHY1316617];
DoE [DE-AC02-05CH11231]
FX VG is grateful for the support provided by the Friends of the Institute
for Advanced Study in Princeton. MG was supported in part by the Murdock
Charitable Trust and some of her work was performed at the Aspen Center
for Physics, which is supported by National Science Foundation grant
PHY-1066293. SDM is supported by NSF PHY1316617. KZ is supported by the
DoE under contract DE-AC02-05CH11231. The authors thank Timothy Morton,
Mikhail Solon, and Hugh Lippincott for helpful discussions.
NR 60
TC 6
Z9 6
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD DEC
PY 2015
IS 12
AR 057
DI 10.1088/1475-7516/2015/12/057
PG 49
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA DA6AR
UT WOS:000367884600057
ER
PT J
AU Gross, EJ
Dosanjh, MRF
Hattara, K
AF Gross, E. J.
Dosanjh, M. R. F.
Hattara, K.
TI MATERIALS ENGINEERING TETRAHEDRON ECONOMIC EVALUATION TOOL
SO JOURNAL OF MATERIALS EDUCATION
LA English
DT Article
DE Introduction to Materials Science; Materials Science Tetrahedron;
Financial Analysis; Project Management
ID RESEARCH-AND-DEVELOPMENT; MATERIALS SELECTION; DESIGN
AB A new open-source project evaluation tool, entitled the Materials Engineering Tetrahedron (MET), has been developed to determine the economic viability of materials design, selection, processing, and validation costs associated with any infrastructure-based project. MET improves project design by providing an economic perspective to the traditional materials science tetrahedron, relating microstructure, processing, property, and performance through the introduction of value-based economic costs for each side of the tetrahedron. The resulting size and distortion, from a regular tetrahedron illustrates the balance between the system, component, or material fabrication project detailed. The MET model also allows for increased budget efficiency and the potential for improved identification of cost saving mechanisms. The use of financial tools, such MET, will aid engineering project management by providing easy and reliable metrics to compare projected costs versus desired outcomes. Expansion and use of these types of tools will reduce risks during the initial stages of project design. To illustrate the strength of MET, several example tetrahedra were generated demonstrating the various uses and applications of this new program.
C1 [Gross, E. J.; Dosanjh, M. R. F.; Hattara, K.] Sandia Natl Labs, Dept Radiat Solid Interact, Albuquerque, NM 87185 USA.
[Gross, E. J.] Univ Arizona, Eller Coll Management, Tucson, AZ 85721 USA.
[Dosanjh, M. R. F.] New Mexico Inst Min & Technol, Dept Mat & Met Engn, Socorro, NM 87801 USA.
RP Hattara, K (reprint author), Sandia Natl Labs, Dept Radiat Solid Interact, POB 5800, Albuquerque, NM 87185 USA.
EM mel.dosanjh@alumni.nmt.edu; khattar@sandia.gov
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX The authors would like to thank P. Hosemann, A. Kinghorn, P. Kotula, and
N. Flor for their helpful discussion. Sandia National Laboratories is a
multi-program laboratory managed and operated by Sandia Corporation, a
wholly owned subsidiary of Lockheed Martin Corporation, for the U.S.
Department of Energy's National Nuclear Security Administration under
contract DE-AC04-94AL85000.
NR 18
TC 0
Z9 0
U1 3
U2 6
PU INT COUNCIL MATERIALS EDUCATION
PI DENTON
PA UNIV N TEXAS, 1155 UNION CIRCLE #30510, DENTON, TX 76203-5017 USA
SN 0738-7989
J9 J MATER EDUC
JI J. Mat. Educ.
PD DEC
PY 2015
VL 37
IS 5-6
BP 219
EP 226
PG 8
WC Education, Scientific Disciplines; Materials Science, Multidisciplinary
SC Education & Educational Research; Materials Science
GA DB0PK
UT WOS:000368209800003
ER
PT J
AU Thust, A
Arinicheva, Y
Haussuhl, E
Ruiz-Fuertes, J
Bayarjargal, L
Vogel, SC
Neumeier, S
Winkler, B
AF Thust, Anja
Arinicheva, Yulia
Haussuehl, Eiken
Ruiz-Fuertes, Javier
Bayarjargal, Lkhamsuren
Vogel, Sven C.
Neumeier, Stefan
Winkler, Bjoern
TI Physical Properties of La1-xEuxPO4,0 <= x <= 1, Monazite-Type Ceramics
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID TEMPERATURE HEAT-CAPACITY; LEVEL NUCLEAR-WASTE; MINOR ACTINIDES;
THERMODYNAMIC FUNCTIONS; MECHANICAL-PROPERTIES; IMMOBILIZATION; GLASSES;
FORMS; GD; PLUTONIUM
AB Synthetic La1 - xEuxPO4 monazite-type ceramics with 0 <= x <= 1 have been characterized by ultrasound techniques, dilatometry, and micro-calorimetry. The coefficients of thermal expansion and the elastic properties are, to a good approximation, linearly dependent on the europium concentration. Elastic stiffness coefficients range from 182(1) to 202(1) GPa for c(11) and from 53.8(7) to 61.1(4) GPa for c(44). They are strongly dependent on the density of the sample. The coefficient of thermal expansion at 673 K is 8.4(3) x 10(-6) K-1 for LaPO4 and 9.9(3) x 10(-6) K-1 for EuPO4, respectively. The heat capacities at ambient temperature are between 101.6(8) J.(mol.K)(-1) for LaPO4 and 110.1(8) J.(mol.K)(-1) for EuPO4. The difference between the heat capacity of LaPO4O4 and the Eu-containing solid solutions is dominated by electronic transitions of the 4f-electrons at temperatures above 75 K.
C1 [Thust, Anja; Haussuehl, Eiken; Ruiz-Fuertes, Javier; Bayarjargal, Lkhamsuren; Winkler, Bjoern] Goethe Univ Frankfurt, Inst Geowissensch, D-60438 Frankfurt, Germany.
[Arinicheva, Yulia; Neumeier, Stefan] Forsch Zentrum Julich GmbH, Inst Energy & Climate Res Nucl Waste Management &, Julich, Germany.
[Vogel, Sven C.] Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM USA.
RP Thust, A (reprint author), Goethe Univ Frankfurt, Inst Geowissensch, Altenhoferallee 1, D-60438 Frankfurt, Germany.
EM thust@kristall.uni-frankfurt.de
FU Federal Ministry of Education and Research (BMBF) [02NUK019E,
02NUK021F]; Alexander von Humboldt Foundation
FX Financial support from the Federal Ministry of Education and Research
(BMBF) under grants 02NUK019E and 02NUK021F is gratefully acknowledged.
The authors would like to thank Igor Alencar, Johannes D. Bauer, Nadine
Schrodt (nee Rademacher), Julia Heuser and Martina Klinkenberg for their
helpful support. J.R.-F. thanks the Alexander von Humboldt Foundation
for a postdoctoral fellowship. Furthermore, we acknowledge the group of
Dirk Bosbach, especially Piotr Kowalski for fruitful discussions.
NR 39
TC 8
Z9 8
U1 6
U2 14
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
EI 1551-2916
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD DEC
PY 2015
VL 98
IS 12
BP 4016
EP 4021
DI 10.1111/jace.13841
PG 6
WC Materials Science, Ceramics
SC Materials Science
GA DA8SN
UT WOS:000368076500063
ER
PT J
AU Bae, S
Taylor, R
Shapiro, D
Denes, P
Joseph, J
Celestre, R
Marchesini, S
Padmore, H
Tyliszczak, T
Warwick, T
Kilcoyne, D
Levitz, P
Monteiro, PJM
AF Bae, Sungchul
Taylor, Rae
Shapiro, David
Denes, Peter
Joseph, John
Celestre, Rich
Marchesini, Stefano
Padmore, Howard
Tyliszczak, Tolek
Warwick, Tony
Kilcoyne, David
Levitz, Pierre
Monteiro, Paulo J. M.
TI Soft X-ray Ptychographic Imaging and Morphological Quantification of
Calcium Silicate Hydrates (C-S-H)
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID PORTLAND-CEMENT; TRICALCIUM SILICATE; PASTE; SCATTERING; MICROSTRUCTURE;
MICROSCOPY; SURFACE
AB Morphological details of calcium silicate hydrate (C-S-H) stemming from the hydration process of Portland cement (PC) phases are crucial for understanding the PC-based systems but are still only partially known. Here we introduce the first soft X-ray ptychographic imaging of tricalcium silicate (C3S) hydration products. The results are compared using both scanning transmission X-ray and electron transmission microscopy data. The evidence shows that ptychography is a powerful method to visualize the details of outer and inner product C-S-H of fully hydrated C3S, which have fibrillar and an interglobular structure with average void sizes of 20 nm, respectively. The high-resolution ptychrography image enables us to perform morphological quantification of C-S-H, and, for the first time, to possibly distinguish the contributions of inner and outer product C-S-H to the small angle scattering of cement paste. The results indicate that the outer product C-S-H is mainly responsible for the q(-3) regime, whereas the inner product C-S-H transitions to a q(-2) regime. Various hypotheses are discussed to explain these regimes.
C1 [Bae, Sungchul; Taylor, Rae; Monteiro, Paulo J. M.] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
[Bae, Sungchul] Tokyo Univ Sci, Fac Sci & Technol, Noda, Chiba 2788510, Japan.
[Shapiro, David; Denes, Peter; Joseph, John; Celestre, Rich; Marchesini, Stefano; Padmore, Howard; Tyliszczak, Tolek; Warwick, Tony; Kilcoyne, David] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Levitz, Pierre] Univ Paris 06, CNRS, PHENIX Lab, F-75252 Paris, France.
RP Bae, S (reprint author), Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
EM sungchul.bae@gmail.com
RI Kilcoyne, David/I-1465-2013
FU Republic of Singapore's National Research Foundation; Office of Science,
Office of Basic Energy Sciences, of the U.S. Department of Energy
[DE-AC02-05CH11231]; Center for Applied Mathematics for Energy Research
Applications (CAMERA)
FX This research is funded by the Republic of Singapore's National Research
Foundation, through a grant to the Berkeley Education Alliance for
Research in Singapore (BEARS), for the Singapore-Berkeley Building
Efficiency and Sustainability in the Tropics (SinBerBEST) Program. The
Advanced Light Source is supported by the Director, Office of Science,
Office of Basic Energy Sciences, of the U.S. Department of Energy under
Contract No. DE-AC02-05CH11231. We acknowledge the support of ALS
technical and safety staff and discussions with Drs. Janos Kirz and John
Spence. This work is partially supported by the Center for Applied
Mathematics for Energy Research Applications (CAMERA), which is a
partnership between Basic Energy Sciences (BES) and Advanced Scientific
Computing Research (ASRC) at the U.S Department of Energy.
NR 22
TC 5
Z9 5
U1 6
U2 17
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
EI 1551-2916
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD DEC
PY 2015
VL 98
IS 12
BP 4090
EP 4095
DI 10.1111/jace.13808
PG 6
WC Materials Science, Ceramics
SC Materials Science
GA DA8SN
UT WOS:000368076500072
ER
PT J
AU Wozniakiewicz, PJ
Ishii, HA
Kearsley, AT
Bradley, JP
Price, MC
Burchell, MJ
Teslich, N
Cole, MJ
AF Wozniakiewicz, Penelope J.
Ishii, Hope A.
Kearsley, Anton T.
Bradley, John P.
Price, Mark. C.
Burchell, Mark J.
Teslich, Nick
Cole, Mike J.
TI The survivability of phyllosilicates and carbonates impacting Stardust
Al foils: Facilitating the search for cometary water
SO METEORITICS & PLANETARY SCIENCE
LA English
DT Article
ID TRANSMISSION ELECTRON-MICROSCOPY; 280 LUNAR METEORITE; ALUMINUM FOILS;
HYPERVELOCITY CAPTURE; INTERPLANETARY DUST; LABORATORY IMPACTS; SILICATE
GRAINS; 81P/WILD-2 DUST; NATIVE SILICON; IRON SILICIDES
AB Comet 81P/Wild 2 samples returned by NASA's Stardust mission provide an unequalled opportunity to study the contents of, and hence conditions and processes operating on, comets. They can potentially validate contentious interpretations of cometary infrared spectra and in situ mass spectrometry data: specifically the identification of phyllosilicates and carbonates. However, Wild 2 dust was collected via impact into capture media at similar to 6 km s(-1), leading to uncertainty as to whether these minerals were captured intact, and, if subjected to alteration, whether they remain recognizable. We simulated Stardust Al foil capture conditions using a two-stage light-gas gun, and directly compared transmission electron microscope analyses of pre- and postimpact samples to investigate survivability of lizardite and cronstedtite (phyllosilicates) and calcite (carbonate). We find the phyllosilicates do not survive impact as intact crystalline materials but as moderately to highly vesiculated amorphous residues lining resultant impact craters, whose bulk cation to Si ratios remain close to that of the impacting grain. Closer inspection reveals variation in these elements on a submicron scale, where impact-induced melting accompanied by reducing conditions (due to the production of oxygen scavenging molten Al from the target foils) has resulted in the production of native silicon and Fe-and Fe-Si-rich phases. In contrast, large areas of crystalline calcite are preserved within the calcite residue, with smaller regions of vesiculated, Al-bearing calcic glass. Unambiguous identification of calcite impactors on Stardust Al foil is therefore possible, while phyllosilicate impactors may be inferred from vesiculated residues with appropriate bulk cation to Si ratios. Finally, we demonstrate that the characteristic textures and elemental distributions identifying phyllosilicates and carbonates by transmission electron microscopy can also be observed by state-of-the-art scanning electron microscopy providing rapid, nondestructive initial mineral identifications in Stardust residues.
C1 [Wozniakiewicz, Penelope J.; Kearsley, Anton T.; Price, Mark. C.; Burchell, Mark J.; Cole, Mike J.] Univ Kent, Ctr Astrophys & Planetary Sci, Sch Phys Sci, Canterbury CT2 7NH, Kent, England.
[Wozniakiewicz, Penelope J.; Kearsley, Anton T.] Nat Hist Museum, IARC, Dept Earth Sci, London SW7 5BD, England.
[Ishii, Hope A.; Bradley, John P.] Univ Hawaii Manoa, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA.
[Teslich, Nick] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Wozniakiewicz, PJ (reprint author), Univ Kent, Ctr Astrophys & Planetary Sci, Sch Phys Sci, Canterbury CT2 7NH, Kent, England.
EM pjw@kent.ac.uk
OI Burchell, Mark/0000-0002-2680-8943
FU STFC; U.S. DOE by LLNL [DE-AC52-07NA27344]; [NASA NNH07AG46I];
[NNX14AH86G]; [LDRD 09-ERI-004]
FX We thank Z. Gainsforth and the AE D. Brownlee for their helpful comments
and suggestions during the review of this manuscript. We thank NASA for
providing Al foils, STFC for support of the LGG. Parts of this work were
performed under the auspices of the U.S. DOE by LLNL under Contract
DE-AC52-07NA27344. This work was supported by grants NASA NNH07AG46I and
NNX14AH86G to HAI & LDRD 09-ERI-004 to JPB.
NR 89
TC 4
Z9 4
U1 0
U2 4
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1086-9379
EI 1945-5100
J9 METEORIT PLANET SCI
JI Meteorit. Planet. Sci.
PD DEC
PY 2015
VL 50
IS 12
BP 2003
EP 2023
DI 10.1111/maps.12568
PG 21
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA DA7XJ
UT WOS:000368018600004
ER
PT J
AU Wang, MM
Liu, SS
Wang, F
Sun, B
Zhou, JZ
Yang, YF
AF Wang, Mengmeng
Liu, Shanshan
Wang, Feng
Sun, Bo
Zhou, Jizhong
Yang, Yunfeng
TI Microbial responses to southward and northward Cambisol soil transplant
SO MICROBIOLOGYOPEN
LA English
DT Article
DE Cambisol soil; microbial diversity; microbial functional potential; soil
transplant
ID BACTERIAL COMMUNITIES; FUNCTIONAL DIVERSITY; CLIMATE-CHANGE; GRADIENT;
GRASSLAND; FOREST; BIOGEOCHEMISTRY; MANIPULATION; PRAIRIE; REGIONS
AB Soil transplant serves as a proxy to simulate climate changes. Recently, we have shown that southward transplant of black soil and northward transplant of red soil altered soil microbial communities and biogeochemical variables. However, fundamental differences in soil types have prevented direct comparison between southward and northward transplants. To tackle it, herein we report an analysis of microbial communities of Cambisol soil in an agriculture field after 4 years of adaptation to southward and northward soil transplants over large transects. Analysis of bare fallow soils revealed concurrent increase in microbial functional diversity and coarse-scale taxonomic diversity at both transplanted sites, as detected by GeoChip 3.0 and DGGE, respectively. Furthermore, a correlation between microbial functional diversity and taxonomic diversity was detected, which was masked in maize cropped soils. Mean annual temperature, soil moisture, and nitrate (NO3--N) showed strong correlations with microbial communities. In addition, abundances of ammonium-oxidizing genes (amoA) and denitrification genes were correlated with nitrification capacity and NO3--N contents, suggesting that microbial responses to soil transplant could alter microbe-mediated biogeochemical cycle at the ecosystem level.
C1 [Wang, Mengmeng; Liu, Shanshan; Zhou, Jizhong; Yang, Yunfeng] Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China.
[Wang, Mengmeng; Zhou, Jizhong] Tsinghua Univ, Collaborat Innovat Ctr Reg Environm Qual, Beijing 100084, Peoples R China.
[Wang, Feng; Sun, Bo] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China.
[Wang, Feng] Ningbo Acad Agr Sci, Ningbo 315040, Zhejiang, Peoples R China.
[Zhou, Jizhong] Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA.
[Zhou, Jizhong] Univ Oklahoma, Dept Microbiol & Plant Sci, Norman, OK 73019 USA.
[Zhou, Jizhong] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Yang, YF (reprint author), Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China.
EM yangyf@tsinghua.edu.cn
FU National Key Basic Research Program of China [2013CB956601]; National
High Technology Research and Development Program of China
[2012AA061401]; National Science Foundation of China [41171201,
41471202, 41530856, 41271258, 41430856]; Chinese Academy of Sciences
[XDB15030200]; US Department of Energy [DE-SC0004601]; US National
Science Foundation [EF-1065844]
FX This research was supported by grants to Yunfeng Yang from the National
Key Basic Research Program of China (2013CB956601), the National High
Technology Research and Development Program of China (2012AA061401), and
the National Science Foundation of China (41171201 and 41471202), to Bo
Sun from the Strategic Priority Research Program (B) of the Chinese
Academy of Sciences (XDB15030200) and the National Science Foundation of
China (41530856 and 41271258), and to Jizhong Zhou from the National
Science Foundation of China (41430856). The development of GeoChip and
associated pipelines used in this study was supported by the US
Department of Energy (DE-SC0004601) and the US National Science
Foundation (EF-1065844) to Jizhong Zhou.
NR 42
TC 1
Z9 1
U1 4
U2 14
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 2045-8827
J9 MICROBIOLOGYOPEN
JI MicrobiologyOpen
PD DEC
PY 2015
VL 4
IS 6
BP 931
EP 940
DI 10.1002/mbo3.302
PG 10
WC Microbiology
SC Microbiology
GA DB3MI
UT WOS:000368415300006
PM 26503228
ER
PT J
AU Agnello, A
Treu, T
Ostrovski, F
Schechter, PL
Buckley-Geer, EJ
Lin, H
Auger, MW
Courbin, F
Fassnacht, CD
Frieman, J
Kuropatkin, N
Marshall, PJ
McMahon, RG
Meylan, G
More, A
Suyu, SH
Rusu, CE
Finley, D
Abbott, T
Abdalla, FB
Allam, S
Annis, J
Banerji, M
Benoit-Levy, A
Bertin, E
Brooks, D
Burke, DL
Rosell, AC
Kind, MC
Carretero, J
Cunha, CE
D'Andrea, CB
da Costa, LN
Desai, S
Diehl, HT
Dietrich, JP
Doel, P
Eifler, TF
Estrada, J
Neto, AF
Flaugher, B
Fosalba, P
Gerdes, DW
Gruen, D
Gutierrez, G
Honscheid, K
James, DJ
Kuehn, K
Lahav, O
Lima, M
Maia, MAG
March, M
Marshall, JL
Martini, P
Melchior, P
Miller, CJ
Miquel, R
Nichol, RC
Ogando, R
Plazas, AA
Reil, K
Romer, AK
Roodman, A
Sako, M
Sanchez, E
Santiago, B
Scarpine, V
Schubnell, M
Sevilla-Noarbe, I
Smith, RC
Soares-Santos, M
Sobreira, F
Suchyta, E
Swanson, MEC
Tarle, G
Thaler, J
Tucker, D
Walker, AR
Wechsler, RH
Zhang, Y
AF Agnello, A.
Treu, T.
Ostrovski, F.
Schechter, P. L.
Buckley-Geer, E. J.
Lin, H.
Auger, M. W.
Courbin, F.
Fassnacht, C. D.
Frieman, J.
Kuropatkin, N.
Marshall, P. J.
McMahon, R. G.
Meylan, G.
More, A.
Suyu, S. H.
Rusu, C. E.
Finley, D.
Abbott, T.
Abdalla, F. B.
Allam, S.
Annis, J.
Banerji, M.
Benoit-Levy, A.
Bertin, E.
Brooks, D.
Burke, D. L.
Carnero Rosell, A.
Kind, M. Carrasco
Carretero, J.
Cunha, C. E.
D'Andrea, C. B.
da Costa, L. N.
Desai, S.
Diehl, H. T.
Dietrich, J. P.
Doel, P.
Eifler, T. F.
Estrada, J.
Fausti Neto, A.
Flaugher, B.
Fosalba, P.
Gerdes, D. W.
Gruen, D.
Gutierrez, G.
Honscheid, K.
James, D. J.
Kuehn, K.
Lahav, O.
Lima, M.
Maia, M. A. G.
March, M.
Marshall, J. L.
Martini, P.
Melchior, P.
Miller, C. J.
Miquel, R.
Nichol, R. C.
Ogando, R.
Plazas, A. A.
Reil, K.
Romer, A. K.
Roodman, A.
Sako, M.
Sanchez, E.
Santiago, B.
Scarpine, V.
Schubnell, M.
Sevilla-Noarbe, I.
Smith, R. C.
Soares-Santos, M.
Sobreira, F.
Suchyta, E.
Swanson, M. E. C.
Tarle, G.
Thaler, J.
Tucker, D.
Walker, A. R.
Wechsler, R. H.
Zhang, Y.
TI Discovery of two gravitationally lensed quasars in the Dark Energy
Survey
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE gravitational lensing: strong; methods: observational; methods:
statistical; quasars: emission lines
ID BROAD-LINE REGION; TIME DELAYS; MATTER SUBSTRUCTURE; IMAGING SURVEYS;
ACCRETION DISK; GALAXIES; FIELD; SELECTION; SEARCH
AB We present spectroscopic confirmation of two new gravitationally lensed quasars, discovered in the Dark Energy Survey (DES) and Wide-field Infrared Survey Explorer (WISE) based on their multiband photometry and extended morphology in DES images. Images of DES J0115-5244 show a red galaxy with two blue point sources at either side, which are images of the same quasar at z(s) = 1.64 as obtained by our long-slit spectroscopic data. The Einstein radius estimated from the DES images is 0.51 arcsec. DES J2146-0047 is in the area of overlap between DES and the Sloan Digital Sky Survey (SDSS). Two blue components are visible in the DES and SDSS images. The SDSS fibre spectrum shows a quasar component at z(s) = 2.38 and absorption by Mg Pi and Fe Pi at z(1) = 0.799, which we tentatively associate with the foreground lens galaxy. Our long-slit spectra show that the blue components are resolved images of the same quasar. The Einstein radius is 0.68 arcsec, corresponding to an enclosed mass of 1.6 x 10(11) M-circle dot. Three other candidates were observed and rejected, two being low-redshift pairs of starburst galaxies, and one being a quasar behind a blue star. These first confirmation results provide an important empirical validation of the data mining and model-based selection that is being applied to the entire DES data set.
C1 [Agnello, A.; Treu, T.] PAB, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Ostrovski, F.; Auger, M. W.; McMahon, R. G.; Banerji, M.] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.
[Ostrovski, F.; McMahon, R. G.; Banerji, M.] Univ Cambridge, Kavli Inst Cosmol, Cambridge CB3 0HA, England.
[Ostrovski, F.] Minist Educ Brazil, CAPES Fdn, BR-70040020 Brasilia, DF, Brazil.
[Schechter, P. L.] MIT Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA.
[Buckley-Geer, E. J.; Lin, H.; Frieman, J.; Kuropatkin, N.; Finley, D.; Allam, S.; Annis, J.; Diehl, H. T.; Estrada, J.; Flaugher, B.; Gutierrez, G.; Scarpine, V.; Soares-Santos, M.; Sobreira, F.; Tucker, D.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Courbin, F.; Meylan, G.] EPFL, Astrophys Lab, Observ Sauverny, CH-1290 Versoix, Switzerland.
[Fassnacht, C. D.; Rusu, C. E.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
[Marshall, P. J.; Burke, D. L.; Reil, K.; Roodman, A.; Wechsler, R. H.] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94035 USA.
[More, A.] Univ Tokyo, UTIAS, Kavli IPMU WPI, Kashiwa, Chiba 2778583, Japan.
[Suyu, S. H.] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan.
[Abbott, T.; James, D. J.; Smith, R. C.; Walker, A. R.] Cerro Tololo Interamer Observ, Natl Opt Astron Observ, La Serena, Chile.
[Abdalla, F. B.; Benoit-Levy, A.; Brooks, D.; Doel, P.; Lahav, O.] UCL, Dept Phys & Astron, London WC1E 6BT, England.
[Bertin, E.] Inst Astrophys, CNRS, UMR 7095, F-75014 Paris, France.
[Bertin, E.] Univ Paris 06, Sorbonne Univ, Inst Astrophys Paris, UMR 7095, F-75014 Paris, France.
[Burke, D. L.; Cunha, C. E.; Roodman, A.; Wechsler, R. H.] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
[Carnero Rosell, A.; da Costa, L. N.; Fausti Neto, A.; Lima, M.; Maia, M. A. G.; Ogando, R.; Santiago, B.; Sobreira, F.] Lab Interinst E Astron LIneA, BR-20921400 Rio De Janeiro, RJ, Brazil.
[Carnero Rosell, A.; da Costa, L. N.; Maia, M. A. G.; Ogando, R.] Observ Nacl, BR-20921400 Rio De Janeiro, RJ, Brazil.
[Kind, M. Carrasco; Sevilla-Noarbe, I.; Thaler, J.] Univ Illinois, Dept Astron, Urbana, IL 61801 USA.
[Kind, M. Carrasco; Swanson, M. E. C.] Univ Illinois, Natl Ctr Supercomp Applicat, Urbana, IL 61801 USA.
[Carretero, J.; Fosalba, P.] IEEC CSIC, Inst Ciencies Espai, E-08193 Barcelona, Spain.
[Carretero, J.; Miquel, R.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain.
[D'Andrea, C. B.; Nichol, R. C.] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England.
[Desai, S.; Dietrich, J. P.] Excellence Cluster Universe, D-85748 Garching, Germany.
[Desai, S.; Dietrich, J. P.] Univ Munich, Fac Phys, D-81679 Munich, Germany.
[Eifler, T. F.; March, M.; Sako, M.] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA.
[Eifler, T. F.; Plazas, A. A.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Gerdes, D. W.; Miller, C. J.; Schubnell, M.; Tarle, G.; Zhang, Y.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Gruen, D.] Univ Munich, Univ Sternwarte, Fak Phys, D-81679 Munich, Germany.
[Gruen, D.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Honscheid, K.; Martini, P.; Melchior, P.; Suchyta, E.] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Honscheid, K.; Martini, P.; Melchior, P.; Suchyta, E.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Kuehn, K.] Australian Astron Observ, N Ryde, NSW 2113, Australia.
[Lima, M.] Univ Sao Paulo, Inst Fis, Dept Fis Matemat, BR-05314970 Sao Paulo, SP, Brazil.
[Marshall, J. L.] Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamenta, College Stn, TX 77843 USA.
[Marshall, J. L.] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA.
[Miller, C. J.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
[Miquel, R.] Inst Catalana Recerca & Estudis Avancats, E-08010 Barcelona, Spain.
[Romer, A. K.] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England.
[Sanchez, E.; Sevilla-Noarbe, I.] Ctr Invest Energet Medioambientales & Tecnol CIEM, E-28040 Madrid, Spain.
[Santiago, B.] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil.
[Wechsler, R. H.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
RP Agnello, A (reprint author), PAB, Dept Phys & Astron, 430 Portola Plaza,Box 951547, Los Angeles, CA 90095 USA.
EM aagnello@astro.ucla.edu; tt@astro.ucla.edu
RI Ogando, Ricardo/A-1747-2010; Lima, Marcos/E-8378-2010; Sanchez,
Eusebio/H-5228-2015; Fosalba Vela, Pablo/I-5515-2016; Sobreira,
Flavia/F-4168-2015; EPFL, Physics/O-6514-2016;
OI Ogando, Ricardo/0000-0003-2120-1154; Sanchez,
Eusebio/0000-0002-9646-8198; Sobreira, Flavia/0000-0002-7822-0658;
Dietrich, Jorg/0000-0002-8134-9591; Carrasco Kind,
Matias/0000-0002-4802-3194; McMahon, Richard/0000-0001-8447-8869;
Abdalla, Filipe/0000-0003-2063-4345; Tucker, Douglas/0000-0001-7211-5729
FU NSF [AST-1312329, AST-1450141, AST-1138766, , ]; Packard
Foundation through a Packard Research Fellowship; Ministry of Science
and Technology in Taiwan [MOST-103- 2112-M-001-003-MY3]; Swiss National
Science Foundation (SNSF); US Department of Energy [DE-AC02-76SF00515];
DOE; NSF (USA); MISE (Spain); STFC (UK); HEFCE (UK); NCSA (UIUC); KICP
(U. Chicago); CCAPP (Ohio State); MIFPA (Texas AM); CNPQ; FAPERJ; FINEP
(Brazil); MINECO (Spain); DFG (Germany); Collaborating Institutions in
the Dark Energy Survey; MINECO [AYA2012-39559, ESP2013-48274,
FPA2013-47986]; Centro de Excelencia Severo Ochoa [SEV-2012-0234]; ERC
under the EU's 7th Framework Programme including grants ERC [240672,
291329, 306478]
FX This Letter includes data gathered with the 6.5m Baade Telescopes
located at Las Campanas Observatory, Chile. AA, TT, CDF and CER
acknowledge support from NSF grants AST-1312329 and AST-1450141
'Collaborative Research: Accurate cosmology with strong gravitational
lens time delays'. AA and TT gratefully acknowledge support by the
Packard Foundation through a Packard Research Fellowship to TT. SHS
acknowledges support from the Ministry of Science and Technology in
Taiwan via grant MOST-103- 2112-M-001-003-MY3. FC and GM are supported
by the Swiss National Science Foundation (SNSF). The work of PJM was
supported by the US Department of Energy under contract number
DE-AC02-76SF00515. We thank Tamara Davis, Cristina Furlanetto, Gary
Bernstein and Tom Collett for useful comments on earlier versions of
this Letter.; This Letter has gone through internal review by the DES
collaboration. Funding for the DES Projects has been provided by the DOE
and NSF (USA), MISE (Spain), STFC (UK), HEFCE (UK). NCSA (UIUC), KICP
(U. Chicago), CCAPP (Ohio State), MIFPA (Texas A&M), CNPQ, FAPERJ, FINEP
(Brazil), MINECO (Spain), DFG (Germany) and the Collaborating
Institutions in the Dark Energy Survey. The Collaborating Institutions
are Argonne Lab, UC Santa Cruz, University of Cambridge, CIEMAT-Madrid,
University of Chicago, University College London, DES-Brazil Consortium,
University of Edinburgh, ETH Zurich, Fermilab, University of Illinois,
ICE (IEEC-CSIC), IFAE Barcelona, Lawrence Berkeley Lab, LMU Munchen and
the associated Excellence Cluster Universe, University of Michigan,
NOAO, University of Nottingham, Ohio State University, University of
Pennsylvania, University of Portsmouth, SLAC National Lab, Stanford
University, University of Sussex, and Texas A&M University. The DES Data
Management System is supported by the NSF under grant number
AST-1138766. The DES participants from Spanish institutions are
partially supported by MINECO under grants AYA2012-39559, ESP2013-48274,
FPA2013-47986 and Centro de Excelencia Severo Ochoa SEV-2012-0234.
Research leading to these results has received funding from the ERC
under the EU's 7th Framework Programme including grants ERC 240672,
291329 and 306478.
NR 34
TC 5
Z9 5
U1 0
U2 7
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0035-8711
EI 1365-2966
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD DEC 1
PY 2015
VL 454
IS 2
BP 1260
EP 1265
DI 10.1093/mnras/stv2171
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA DA7PZ
UT WOS:000367997700007
ER
PT J
AU Graham, ML
Nugent, PE
Sullivan, M
Filippenko, AV
Cenko, SB
Silverman, JM
Clubb, KI
Zheng, W
AF Graham, M. L.
Nugent, P. E.
Sullivan, M.
Filippenko, A. V.
Cenko, S. B.
Silverman, J. M.
Clubb, K. I.
Zheng, W.
TI Constraining the progenitor companion of the nearby Type Ia SN 2011fe
with a nebular spectrum at+981 d
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE supernovae: general; supernovae: individual: SN 2011fe
ID SINGLE-DEGENERATE SCENARIO; SUPERNOVA EXPLOSIONS; STAR; SPECTROSCOPY;
TELESCOPE; EVOLUTION; HELIUM; SUBTRACTION; ENVIRONMENT; HYDROGEN
AB We present an optical nebular spectrum of the nearby Type Ia supernova 2011fe, obtained 981 d after explosion. SN 2011fe exhibits little evolution since the +593 d optical spectrum, but there are several curious aspects in this new extremely late-time regime. We suggest that the persistence of the similar to 5800 angstrom feature is due to NaD, and that a new emission feature at similar to 7300 angstrom may be [Ca II]. Also, we discuss whether the new emission feature at similar to 6400 angstrom might be [Fe I] or the high-velocity hydrogen predicted by Mazzali et al. The nebular feature at 5200 angstrom exhibits linear velocity evolution of similar to 350 km s(-1) per 100 d from at least +220 to +980 d, but the line's shape also changes in this time, suggesting that line blending contributes to the evolution. At similar to 1000 d after explosion, flux from the SN has declined to a point where contribution from a luminous secondary could be detected. In this work, we make the first observational tests for a post-impact remnant star and constrain its temperature and luminosity to T greater than or similar to 10(4) K and L less than or similar to 10(4) L. Additionally, we do not see any evidence for narrow H alpha emission in our spectrum. We conclude that observations continue to strongly exclude many single-degenerate scenarios for SN 2011fe.
C1 [Graham, M. L.; Nugent, P. E.; Filippenko, A. V.; Clubb, K. I.; Zheng, W.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Nugent, P. E.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Sullivan, M.] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England.
[Cenko, S. B.] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA.
[Cenko, S. B.] Univ Maryland, Joint Space Sci Inst, College Pk, MD 20742 USA.
[Silverman, J. M.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA.
RP Graham, ML (reprint author), Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA.
EM melissalynngraham@gmail.com
OI Sullivan, Mark/0000-0001-9053-4820
FU Google; W. M. Keck Foundation; Gary & Cynthia Bengier; Richard & Rhoda
Goldman Fund; Christopher R. Redlich Fund; TABASGO Foundation; National
Science Foundation (NSF) [AST-1211916]; Royal Society; NSF Astronomy and
Astrophysics Postdoctoral Fellowship [AST-1302771]
FX Based on observations from the Low Resolution Imaging Spectrometer at
the Keck-1 telescope, the DEep Imaging Multi-Object Spectrograph at the
Keck-2 telescope, and the Kast spectrograph on the 3-m Shane telescope.
We thank the staff at the Lick and Keck Observatories for their
assistance, Ori D. Fox for participating in the observations, and Peter
Lundqvist, Josh Simon, and Ben Shappee for helpful correspondence.
Research at Lick Observatory is partially supported by Google. The W. M.
Keck Observatory is operated as a scientific partnership among the
California Institute of Technology, the University of California, and
NASA; it was made possible by the generous financial support of the W.
M. Keck Foundation. We wish to extend special thanks to those of
Hawaiian ancestry on whose sacred mountain we are privileged to be
guests. The supernova research of AVF's group at U.C. Berkeley is
supported by Gary & Cynthia Bengier, the Richard & Rhoda Goldman Fund,
the Christopher R. Redlich Fund, the TABASGO Foundation, and National
Science Foundation (NSF) grant AST-1211916. MS acknowledges support from
the Royal Society. JMS is supported by an NSF Astronomy and Astrophysics
Postdoctoral Fellowship under award AST-1302771.
NR 55
TC 8
Z9 8
U1 0
U2 1
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0035-8711
EI 1365-2966
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD DEC 1
PY 2015
VL 454
IS 2
BP 1948
EP 1957
DI 10.1093/mnras/stv1888
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA DA7PZ
UT WOS:000367997700061
ER
PT J
AU Tsuji, P
Tuminaro, R
AF Tsuji, P.
Tuminaro, R.
TI Augmented AMG-shifted Laplacian preconditioners for indefinite Helmholtz
problems
SO NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS
LA English
DT Article
DE acoustic waves; time-harmonic; frequency domain; shifted Laplacian;
perfectly matched layers; structural dynamics
ID PERFECTLY MATCHED LAYERS; SWEEPING PRECONDITIONER; EQUATION
AB Discrete representations of the Helmholtz operator generally give rise to extremely difficult linear systems from an iterative solver perspective. This is due in part to the large oscillatory near null space of the linear system. Typical iterative methods do not effectively reduce error components in the subspace associated with this near null space. Traditional coarse grids used within multilevel solvers also cannot capture these components because of their oscillatory nature. While the shifted Laplacian is a popular method allowing multigrid preconditioners to achieve improved convergence, it is still unsatisfactory for higher-frequency problems. This paper analyzes the shifted Laplacian through polynomial smoothers to show its effect on the spectrum of the discrete Helmholtz operator. This analysis reveals desirable features of the shifted Laplacian preconditioners as well as limitations. Shifted Laplacian techniques are first extended to smoothed aggregation algebraic multigrid. Motivated by analysis, we propose augmenting the algebraic multigrid shifted Laplacian with a two-grid error correction step. This additional step consists of the generalized minimal residual iterations applied to a projected version of the unshifted equations on a single auxiliary coarse grid. Results indicate that augmentation can improve the convergence significantly and can reduce the overall solve time on two-dimensional and three-dimensional problems. Copyright (C) 2015 John Wiley & Sons, Ltd.
C1 [Tsuji, P.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Tuminaro, R.] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Tsuji, P (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
EM tsuji1@llnl.gov
FU US Department of Energy [DE-AC04-94-AL85000]; US Department of Energy,
Office of Science, Office of Advanced Scientific Computing Research,
Applied Mathematics program
FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the US Department of Energy under contract
DE-AC04-94-AL85000. Part of this material is based upon work supported
by the US Department of Energy, Office of Science, Office of Advanced
Scientific Computing Research, Applied Mathematics program.
NR 28
TC 1
Z9 1
U1 0
U2 1
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1070-5325
EI 1099-1506
J9 NUMER LINEAR ALGEBR
JI Numer. Linear Algebr. Appl.
PD DEC
PY 2015
VL 22
IS 6
SI SI
BP 1077
EP 1101
DI 10.1002/nla.1997
PG 25
WC Mathematics, Applied; Mathematics
SC Mathematics
GA DB2WO
UT WOS:000368371500011
ER
PT J
AU Hlavacek, WS
Gnanakaran, S
Munsky, B
Wall, ME
Faeder, JR
Jiang, Y
Nemenman, I
Resnekov, O
AF Hlavacek, William S.
Gnanakaran, S.
Munsky, Brian
Wall, Michael E.
Faeder, James R.
Jiang, Yi
Nemenman, Ilya
Resnekov, Orna
TI The eighth q-bio conference: meeting report and special issue preface
SO PHYSICAL BIOLOGY
LA English
DT Editorial Material
C1 [Hlavacek, William S.; Gnanakaran, S.; Munsky, Brian; Wall, Michael E.] New Mexico Consortium, Los Alamos, NM 87544 USA.
[Hlavacek, William S.; Gnanakaran, S.] Los Alamos Natl Lab, Theoret Biol & Biophys Grp, Div Theoret, Los Alamos, NM 87545 USA.
[Hlavacek, William S.; Gnanakaran, S.; Munsky, Brian] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Munsky, Brian; Wall, Michael E.] Los Alamos Natl Lab, Informat Sci Grp, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA.
[Faeder, James R.] Univ Pittsburgh, Sch Med, Dept Computat & Syst Biol, Pittsburgh, PA 15213 USA.
[Jiang, Yi] Georgia State Univ, Dept Math & Stat, Atlanta, GA 30303 USA.
[Nemenman, Ilya] Emory Univ, Dept Phys, Atlanta, GA 30322 USA.
[Nemenman, Ilya] Emory Univ, Dept Biol, Atlanta, GA 30322 USA.
RP Hlavacek, WS (reprint author), New Mexico Consortium, Los Alamos, NM 87544 USA.
OI Gnanakaran, S/0000-0002-9368-3044; Alexandrov,
Ludmil/0000-0003-3596-4515; Hlavacek, William/0000-0003-4383-8711
FU NIGMS NIH HHS [R25 GM105608, R25GM105608-02]
NR 12
TC 0
Z9 0
U1 1
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1478-3967
EI 1478-3975
J9 PHYS BIOL
JI Phys. Biol.
PD DEC
PY 2015
VL 12
IS 6
AR 060401
DI 10.1088/1478-3975/12/6/060401
PG 3
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA DB0GJ
UT WOS:000368186300001
PM 26716953
ER
PT J
AU Eudes, A
Sathitsuksanoh, N
Baidoo, EEK
George, A
Liang, Y
Yang, F
Singh, S
Keasling, JD
Simmons, BA
Loque, D
AF Eudes, Aymerick
Sathitsuksanoh, Noppadon
Baidoo, Edward E. K.
George, Anthe
Liang, Yan
Yang, Fan
Singh, Seema
Keasling, Jay D.
Simmons, Blake A.
Loque, Dominique
TI Expression of a bacterial 3-dehydroshikimate dehydratase reduces lignin
content and improves biomass saccharification efficiency
SO PLANT BIOTECHNOLOGY JOURNAL
LA English
DT Article
DE cell wall; lignin; QsuB; saccharification; lignin polymerization degree;
bioenergy
ID HETEROLOGOUS EXPRESSION; ARABIDOPSIS-THALIANA; CHEMICAL-COMPOSITION;
ACID BIOSYNTHESIS; ESCHERICHIA-COLI; NMR-SPECTROSCOPY; DOWN-REGULATION;
PLANTS; SHIKIMATE; CELL
AB Lignin confers recalcitrance to plant biomass used as feedstocks in agro-processing industries or as source of renewable sugars for the production of bioproducts. The metabolic steps for the synthesis of lignin building blocks belong to the shikimate and phenylpropanoid pathways. Genetic engineering efforts to reduce lignin content typically employ gene knockout or gene silencing techniques to constitutively repress one of these metabolic pathways. Recently, new strategies have emerged offering better spatiotemporal control of lignin deposition, including the expression of enzymes that interfere with the normal process for cell wall lignification. In this study, we report that expression of a 3-dehydroshikimate dehydratase (QsuB from Corynebacterium glutamicum) reduces lignin deposition in Arabidopsis cell walls. QsuB was targeted to the plastids to convert 3-dehydroshikimate - an intermediate of the shikimate pathway - into protocatechuate. Compared to wild-type plants, lines expressing QsuB contain higher amounts of protocatechuate, p-coumarate, p-coumaraldehyde and p-coumaryl alcohol, and lower amounts of coniferaldehyde, coniferyl alcohol, sinapaldehyde and sinapyl alcohol. 2D-NMR spectroscopy and pyrolysis-gas chromatography/mass spectrometry (pyro-GC/MS) reveal an increase of p-hydroxyphenyl units and a reduction of guaiacyl units in the lignin of QsuB lines. Size-exclusion chromatography indicates a lower degree of lignin polymerization in the transgenic lines. Therefore, our data show that the expression of QsuB primarily affects the lignin biosynthetic pathway. Finally, biomass from these lines exhibits more than a twofold improvement in saccharification efficiency. We conclude that the expression of QsuB in plants, in combination with specific promoters, is a promising gain-of-function strategy for spatiotemporal reduction of lignin in plant biomass.
C1 [Eudes, Aymerick; Sathitsuksanoh, Noppadon; Baidoo, Edward E. K.; George, Anthe; Liang, Yan; Yang, Fan; Singh, Seema; Keasling, Jay D.; Simmons, Blake A.; Loque, Dominique] Joint BioEnergy Inst, Emeryville, CA 94608 USA.
[Eudes, Aymerick; Baidoo, Edward E. K.; Liang, Yan; Yang, Fan; Keasling, Jay D.; Loque, Dominique] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Sathitsuksanoh, Noppadon; George, Anthe; Singh, Seema; Simmons, Blake A.] Sandia Natl Labs, Livermore, CA USA.
[Keasling, Jay D.] Univ Calif Berkeley, Dept Chem & Biomol Engn, Dept Bioengn, Berkeley, CA 94720 USA.
RP Loque, D (reprint author), Joint BioEnergy Inst, Emeryville, CA 94608 USA.
EM dloque@lbl.gov
RI Liang, Yan/K-8199-2016;
OI Liang, Yan/0000-0002-2144-1388; Simmons, Blake/0000-0002-1332-1810
FU U. S. Department of Energy, Office of Science, Office of Biological and
Environmental Research [DE-AC02-05CH11231]
FX The authors thank George Wang for technical support with the metabolite
analyses, Peter Benke for developing LC-MS analytical methods, Sabin
Russell for editing this manuscript and Novozymes for providing Cellic
CTec2 and HTec2. This work was part of the DOE Joint BioEnergy Institute
(http://www.jbei.org) supported by the U. S. Department of Energy,
Office of Science, Office of Biological and Environmental Research,
through contract DE-AC02-05CH11231 between Lawrence Berkeley National
Laboratory and the U.S. Department of Energy.
NR 58
TC 7
Z9 8
U1 2
U2 13
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1467-7644
EI 1467-7652
J9 PLANT BIOTECHNOL J
JI Plant Biotechnol. J.
PD DEC
PY 2015
VL 13
IS 9
BP 1241
EP 1250
DI 10.1111/pbi.12310
PG 10
WC Biotechnology & Applied Microbiology; Plant Sciences
SC Biotechnology & Applied Microbiology; Plant Sciences
GA DB1RX
UT WOS:000368287600004
PM 25583257
ER
PT J
AU Sawake, S
Tajima, N
Mortimer, JC
Lao, J
Ishikawa, T
Yu, XL
Yamanashi, Y
Yoshimi, Y
Kawai-Yamada, M
Dupree, P
Tsumuraya, Y
Kotake, T
AF Sawake, Shota
Tajima, Noriaki
Mortimer, Jenny C.
Lao, Jeemeng
Ishikawa, Toshiki
Yu, Xiaolan
Yamanashi, Yukiko
Yoshimi, Yoshihisa
Kawai-Yamada, Maki
Dupree, Paul
Tsumuraya, Yoichi
Kotake, Toshihisa
TI KONJAC1 and 2 Are Key Factors for GDP-Mannose Generation and Affect
L-Ascorbic Acid and Glucomannan Biosynthesis in Arabidopsis
SO PLANT CELL
LA English
DT Article
ID UDP-SUGAR PYROPHOSPHORYLASE; L-GALACTOSE PHOSPHORYLASE; VITAMIN-C;
BIFUNCTIONAL ENZYME; NUCLEOTIDE SUGARS; PLANTS; THALIANA; SYNTHASE;
PURIFICATION; GENETICS
AB Humans are unable to synthesize L-ascorbic acid (AsA), yet it is required as a cofactor in many critical biochemical reactions. The majority of human dietary AsA is obtained from plants. In Arabidopsis thaliana, a GDP-mannose pyrophosphorylase (GMPP), VITAMIN C DEFECTIVE1 (VTC1), catalyzes a rate-limiting step in AsA synthesis: the formation of GDP-Man. In this study, we identified two nucleotide sugar pyrophosphorylase-like proteins, KONJAC1 (KJC1) and KJC2, which stimulate the activity of VTC1. The kjc1kjc2 double mutant exhibited severe dwarfism, indicating that KJC proteins are important for growth and development. The kjc1 mutation reduced GMPP activity to 10% of wild-type levels, leading to a 60% reduction in AsA levels. On the contrary, overexpression of KJC1 significantly increased GMPP activity. The kjc1 and kjc1kjc2 mutants also exhibited significantly reduced levels of glucomannan, which is also synthesized from GDP-Man. Recombinant KJC1 and KJC2 enhanced the GMPP activity of recombinant VTC1 in vitro, while KJCs did not show GMPP activity. Yeast two-hybrid assays suggested that the stimulation of GMPP activity occurs via interaction of KJCs with VTC1. These results suggest that KJCs are key factors for the generation of GDP-Man and affect AsA level and glucomannan accumulation through the stimulation of VTC1 GMPP activity.
C1 [Sawake, Shota; Tajima, Noriaki; Ishikawa, Toshiki; Yamanashi, Yukiko; Yoshimi, Yoshihisa; Kawai-Yamada, Maki; Tsumuraya, Yoichi; Kotake, Toshihisa] Saitama Univ, Grad Sch Sci & Engn, Saitama 3388570, Japan.
[Mortimer, Jenny C.; Yu, Xiaolan; Dupree, Paul; Kotake, Toshihisa] Univ Cambridge, Dept Biochem, Cambridge CB2 1QW, England.
[Mortimer, Jenny C.] RIKEN, Ctr Sustainable Resource Sci, Cooperat Div, Biomass Engn Program, Yokohama, Kanagawa 2300045, Japan.
[Mortimer, Jenny C.; Lao, Jeemeng] Joint Bioenergy Inst, Emeryville, CA 94608 USA.
RP Kotake, T (reprint author), Saitama Univ, Grad Sch Sci & Engn, Saitama 3388570, Japan.
EM kotake@mail.saitama-u.ac.jp
RI Kotake, Toshihisa/F-1117-2011; Yoshimi, Yoshihisa/F-3440-2017;
OI Kotake, Toshihisa/0000-0002-1110-5006; Mortimer,
Jenny/0000-0001-6624-636X; Yoshimi, Yoshihisa/0000-0002-6734-6677;
Dupree, Paul/0000-0001-9270-6286
FU Japan Society of the Promotion of Science [22770030]; Ministry of
Education, Culture, Sports, Science, and Technology of Japan [24114006];
BBSRC Sustainable Bioenergy Centre: Cell wall sugars programme
[BB/G016240/1]; RIKEN Foreign Postdoctoral Research program; Office of
Science, Office of Biological and Environmental Research of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX We thank O. Kosik (Rothamsted Research, UK) for valuable discussion on
NDP-sugar analysis. This work was financially supported in part by a
Grant-in-Aid for Scientific Research to T.K. (22770030) from the Japan
Society of the Promotion of Science, and by Grant-in-Aid for Scientific
Research (24114006) to Y.T. and T.K. from the Ministry of Education,
Culture, Sports, Science, and Technology of Japan. Support was also
provided by the BBSRC Sustainable Bioenergy Centre: Cell wall sugars
programme to P.D. (Grant BB/G016240/1) and by the RIKEN Foreign
Postdoctoral Research program to J.C.M. J.C.M.'s work at the Joint
BioEnergy Institute was supported by the Office of Science, Office of
Biological and Environmental Research of the U.S. Department of Energy
under Contract DE-AC02-05CH11231.
NR 64
TC 3
Z9 4
U1 3
U2 14
PU AMER SOC PLANT BIOLOGISTS
PI ROCKVILLE
PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 USA
SN 1040-4651
EI 1532-298X
J9 PLANT CELL
JI Plant Cell
PD DEC
PY 2015
VL 27
IS 12
BP 3397
EP 3409
DI 10.1105/tpc.15.00379
PG 13
WC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology
SC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology
GA DB1VM
UT WOS:000368297100010
PM 26672069
ER
PT J
AU Blaby, IK
Blaby-Haas, CE
Perez-Perez, ME
Schmollinger, S
Fitz-Gibbon, S
Lemaire, SD
Merchant, SS
AF Blaby, Ian K.
Blaby-Haas, Crysten E.
Perez-Perez, Maria Esther
Schmollinger, Stefan
Fitz-Gibbon, Sorel
Lemaire, Stephane D.
Merchant, Sabeeha S.
TI Genome-wide analysis on Chlamydomonas reinhardtii reveals the impact of
hydrogen peroxide on protein stress responses and overlap with other
stress transcriptomes
SO PLANT JOURNAL
LA English
DT Article
DE H2O2; oxidative stress; stress responses; redox signaling; reactive
oxygen species; RNA-seq
ID INDUCED GENE-EXPRESSION; OXIDATIVE STRESS; ARABIDOPSIS-THALIANA;
ESCHERICHIA-COLI; OXIDIZED PROTEINS; BINDING PROTEIN; SINGLET OXYGEN;
20S PROTEASOME; LEVEL ANALYSIS; PLANT LINEAGE
AB Reactive oxygen species (ROS) are produced by and have the potential to be damaging to all aerobic organisms. In photosynthetic organisms, they are an unavoidable byproduct of electron transfer in both the chloroplast and mitochondrion. Here, we employ the reference unicellular green alga Chlamydomonas reinhardtii to identify the effect of H2O2 on gene expression by monitoring the changes in the transcriptome in a time-course experiment. Comparison of transcriptomes from cells sampled immediately prior to the addition of H2O2 and 0.5 and 1 h subsequently revealed 1278 differentially abundant transcripts. Of those transcripts that increase in abundance, many encode proteins involved in ROS detoxification, protein degradation and stress responses, whereas among those that decrease are transcripts encoding proteins involved in photosynthesis and central carbon metabolism. In addition to these transcriptomic adjustments, we observe that addition of H2O2 is followed by an accumulation and oxidation of the total intracellular glutathione pool, and a decrease in photosynthetic O-2 output. Additionally, we analyze our transcriptomes in the context of changes in transcript abundance in response to singlet O-2 (O-2*), and relate our H2O2-induced transcripts to a diurnal transcriptome, where we demonstrate enrichments of H2O2-induced transcripts early in the light phase, late in the light phase and 2 h prior to light. On this basis several genes that are highlighted in this work may be involved in previously undiscovered stress remediation pathways or acclimation responses.
C1 [Blaby, Ian K.; Blaby-Haas, Crysten E.; Schmollinger, Stefan; Merchant, Sabeeha S.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
[Perez-Perez, Maria Esther; Lemaire, Stephane D.] Univ Paris 06, Sorbonne Univ, CNRS,UMR8226, Inst Biol Physicochim,Lab Biol Mol & Cellulaire E, F-75005 Paris, France.
[Fitz-Gibbon, Sorel; Merchant, Sabeeha S.] Univ Calif Los Angeles, Inst Genom & Prote, Los Angeles, CA 90095 USA.
RP Blaby, IK (reprint author), Brookhaven Natl Lab, Dept Biol, 50 Bell Ave,Bldg 463, Upton, NY 11973 USA.
EM iblaby@bnl.gov
RI Lemaire, Stephane/A-3530-2008; Perez Perez, Maria Esther/P-5892-2014;
OI Perez Perez, Maria Esther/0000-0003-0779-6665; Blaby,
Crysten/0000-0002-1583-1291
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences of the US Department of Energy
[DE-FD02-04ER15529]; National Institutes of Health (NIH) [R24 GM092473];
Agence Nationale de la Recherche Grant CYNTHIOL [ANR-12-BSV6-0011];
LABEX DYNAMO [ANR-11-LABX-0011]; National Institutes of Health
[T32ES015457, GM100753]; Office of Biological and Environmental Research
of the Department Of Energy; IEF EU Marie Curie Fellowship
[PIEF-GA-2011-298652-REDOXDYNAMICS]
FX This work was supported by the Division of Chemical Sciences,
Geosciences, and Biosciences, Office of Basic Energy Sciences of the US
Department of Energy (DE-FD02-04ER15529) and by the National Institutes
of Health (NIH) R24 GM092473 to SM. This work was also supported in part
by Agence Nationale de la Recherche Grant CYNTHIOL ANR-12-BSV6-0011 and
LABEX DYNAMO ANR-11-LABX-0011 (to SDL). IKB and CB-H were supported by
training grants from the National Institutes of Health (T32ES015457 and
GM100753 respectively) and by the Office of Biological and Environmental
Research of the Department Of Energy. MEP-P was supported by an IEF EU
Marie Curie Fellowship (PIEF-GA-2011-298652-REDOXDYNAMICS). We are
grateful to M. Dudley Page for help with gene curation.
NR 74
TC 0
Z9 0
U1 5
U2 19
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0960-7412
EI 1365-313X
J9 PLANT J
JI Plant J.
PD DEC
PY 2015
VL 84
IS 5
BP 974
EP 988
DI 10.1111/tpj.13053
PG 15
WC Plant Sciences
SC Plant Sciences
GA DB1KU
UT WOS:000368267900011
PM 26473430
ER
PT J
AU Warakanont, J
Tsai, CH
Michel, EJS
Murphy, GR
Hsueh, PY
Roston, RL
Sears, BB
Benning, C
AF Warakanont, Jaruswan
Tsai, Chia-Hong
Michel, Elena J. S.
Murphy, George R., III
Hsueh, Peter Y.
Roston, Rebecca L.
Sears, Barbara B.
Benning, Christoph
TI Chloroplast lipid transfer processes in Chlamydomonas reinhardtii
involving a TRIGALACTOSYLDIACYLGLYCEROL 2 (TGD2) orthologue
SO PLANT JOURNAL
LA English
DT Article
DE lipid metabolism; Chlamydomonas reinhardtii; chloroplast lipids;
membranes; lipid transport
ID PSEUDOMONAS-PUTIDA S12; ACID-BINDING-PROTEIN; PHOSPHATIDIC-ACID;
ENDOPLASMIC-RETICULUM; GLYCEROL-3-PHOSPHATE ACYLTRANSFERASE;
DIACYLGLYCEROL ACYLTRANSFERASE; PLANT-CELLS; FATTY-ACIDS; ARABIDOPSIS;
TRAFFICKING
AB In plants, lipids of the photosynthetic membrane are synthesized by parallel pathways associated with the endoplasmic reticulum (ER) and the chloroplast envelope membranes. Lipids derived from the two pathways are distinguished by their acyl-constituents. Following this plant paradigm, the prevalent acyl composition of chloroplast lipids suggests that Chlamydomonas reinhardtii (Chlamydomonas) does not use the ER pathway; however, the Chlamydomonas genome encodes presumed plant orthologues of a chloroplast lipid transporter consisting of TGD (TRIGALACTOSYLDIACYLGLYCEROL) proteins that are required for ER-to-chloroplast lipid trafficking in plants. To resolve this conundrum, we identified a mutant of Chlamydomonas deleted in the TGD2 gene and characterized the respective protein, CrTGD2. Notably, the viability of the mutant was reduced, showing the importance of CrTGD2. Galactoglycerolipid metabolism was altered in the tgd2 mutant with monogalactosyldiacylglycerol (MGDG) synthase activity being strongly stimulated. We hypothesize this to be a result of phosphatidic acid accumulation in the chloroplast outer envelope membrane, the location of MGDG synthase in Chlamydomonas. Concomitantly, increased conversion of MGDG into triacylglycerol (TAG) was observed. This TAG accumulated in lipid droplets in the tgd2 mutant under normal growth conditions. Labeling kinetics indicate that Chlamydomonas can import lipid precursors from the ER, a process that is impaired in the tgd2 mutant.
C1 [Warakanont, Jaruswan; Tsai, Chia-Hong; Michel, Elena J. S.; Sears, Barbara B.] Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA.
[Warakanont, Jaruswan; Tsai, Chia-Hong; Sears, Barbara B.; Benning, Christoph] Michigan State Univ, MSU DOE Plant Res Lab, E Lansing, MI 48824 USA.
[Murphy, George R., III; Hsueh, Peter Y.; Roston, Rebecca L.; Benning, Christoph] Michigan State Univ, Dept Biochem & Mol Biol, E Lansing, MI 48824 USA.
RP Benning, C (reprint author), Michigan State Univ, MSU DOE Plant Res Lab, E Lansing, MI 48824 USA.
EM benning@msu.edu
OI Roston, Rebecca/0000-0002-3063-5002
FU Royal Thai Government Scholarship; US NSF [MCB 1157231]; US AFOSR
[FA9550-11-1-0264]; MSU Foundation; MSU AgBioResearch
FX We are grateful to Dr Simone Zauner and Dr Yang Yang for valuable
discussions. We would like to thank Dr Likit Preeyanon for helping with
de novo genome assembly and Alicia Pastor for helping with electron
microscopy. We thank Tomomi Takeuchi and Dr Shin-Han Shiu for helping
with the construction of the phylogenetic tree. We thank Dr Setsuko
Wakao and Dr John Froehlich for valuable suggestions for subcellular
fractionation and the protease protection assay, respectively. We
appreciate Dr Pawin Ittisamai for taking photographs in Figure 2a. JW
has been supported by a Royal Thai Government Scholarship. This work was
supported in part by grants to CB from the US NSF (MCB 1157231), the US
AFOSR (FA9550-11-1-0264), by a Strategic Partnership grant from the MSU
Foundation, and by MSU AgBioResearch.
NR 66
TC 2
Z9 2
U1 6
U2 21
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0960-7412
EI 1365-313X
J9 PLANT J
JI Plant J.
PD DEC
PY 2015
VL 84
IS 5
BP 1005
EP 1020
DI 10.1111/tpj.13060
PG 16
WC Plant Sciences
SC Plant Sciences
GA DB1KU
UT WOS:000368267900013
PM 26496373
ER
PT J
AU Imam, S
Schauble, S
Valenzuela, J
de Lomana, ALG
Carter, W
Price, ND
Baliga, NS
AF Imam, Saheed
Schaeuble, Sascha
Valenzuela, Jacob
de Lomana, Adrian Lopez Garcia
Carter, Warren
Price, Nathan D.
Baliga, Nitin S.
TI A refined genome-scale reconstruction of Chlamydomonas metabolism
provides a platform for systems-level analyses
SO PLANT JOURNAL
LA English
DT Article
DE metabolic modeling; Chlamydomonas reinhardtii; constraint-based
analysis; flux balance analysis; systems biology; lipid accumulation;
photosynthesis
ID NITROGEN STARVATION; ESCHERICHIA-COLI; AMMONIUM ASSIMILATION; OXIDATIVE
STRESS; MODEL ORGANISM; ATP SYNTHASE; NITRIC-OXIDE; REINHARDTII;
DEPRIVATION; BIOLOGY
AB Microalgae have reemerged as organisms of prime biotechnological interest due to their ability to synthesize a suite of valuable chemicals. To harness the capabilities of these organisms, we need a comprehensive systems-level understanding of their metabolism, which can be fundamentally achieved through large-scale mechanistic models of metabolism. In this study, we present a revised and significantly improved genome-scale metabolic model for the widely-studied microalga, Chlamydomonas reinhardtii. The model, iCre1355, represents a major advance over previous models, both in content and predictive power. iCre1355 encompasses a broad range of metabolic functions encoded across the nuclear, chloroplast and mitochondrial genomes accounting for 1355 genes (1460 transcripts), 2394 and 1133 metabolites. We found improved performance over the previous metabolic model based on comparisons of predictive accuracy across 306 phenotypes (from 81 mutants), lipid yield analysis and growth rates derived from chemostat-grown cells (under three conditions). Measurement of macronutrient uptake revealed carbon and phosphate to be good predictors of growth rate, while nitrogen consumption appeared to be in excess. We analyzed high-resolution time series transcriptomics data using iCre1355 to uncover dynamic pathway-level changes that occur in response to nitrogen starvation and changes in light intensity. This approach enabled accurate prediction of growth rates, the cessation of growth and accumulation of triacylglycerols during nitrogen starvation, and the temporal response of different growth-associated pathways to increased light intensity. Thus, iCre1355 represents an experimentally validated genome-scale reconstruction of C. reinhardtii metabolism that should serve as a useful resource for studying the metabolic processes of this and related microalgae.
C1 [Imam, Saheed; Schaeuble, Sascha; Valenzuela, Jacob; de Lomana, Adrian Lopez Garcia; Carter, Warren; Price, Nathan D.; Baliga, Nitin S.] Inst Syst Biol, Seattle, WA 98109 USA.
[Schaeuble, Sascha] Univ Jena, Language & Informat Engn JULIE Lab, D-07743 Jena, Germany.
[Schaeuble, Sascha] Univ Jena, Res Grp Theoret Syst Biol, D-07743 Jena, Germany.
[Price, Nathan D.] Univ Washington, Dept Bioengn, Seattle, WA 98195 USA.
[Price, Nathan D.] Univ Washington, Dept Comp Sci & Engn, Seattle, WA 98195 USA.
[Price, Nathan D.; Baliga, Nitin S.] Univ Washington, Mol & Cellular Biol Program, Seattle, WA 98195 USA.
[Baliga, Nitin S.] Univ Washington, Dept Biol, Seattle, WA 98195 USA.
[Baliga, Nitin S.] Univ Washington, Dept Microbiol, Seattle, WA 98195 USA.
[Baliga, Nitin S.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Baliga, NS (reprint author), Inst Syst Biol, 401 Terry Ave N, Seattle, WA 98109 USA.
EM nbaliga@systemsbiology.org
FU DOE-ABY [DEEE0006315]; NIH Center for Systems Biology [2P50 GM076547];
Camille Dreyfus Teacher-Scholar program; German Ministry for Research
and Education [FKZ 0315581D, FKZ 01ZX1402C]
FX We would like to thank Dr Julie Bletz for careful reading of the
manuscript and for helpful comments. This work was funded in part by
DOE-ABY (DEEE0006315) (SI, JV, ALGdL, WC, NSB, NDP), NIH Center for
Systems Biology/2P50 GM076547 (NSB, NDP) and the Camille Dreyfus
Teacher-Scholar program (NDP). We also acknowledge financial support
from the German Ministry for Research and Education within the framework
of the GerontoSys initiative (grant FKZ 0315581D) and GlioPATH (grant
FKZ 01ZX1402C) (SS).
NR 85
TC 3
Z9 3
U1 3
U2 19
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0960-7412
EI 1365-313X
J9 PLANT J
JI Plant J.
PD DEC
PY 2015
VL 84
IS 6
BP 1239
EP 1256
DI 10.1111/tpj.13059
PG 18
WC Plant Sciences
SC Plant Sciences
GA DB1LC
UT WOS:000368268700016
PM 26485611
ER
PT J
AU Gaglia, MM
Rycroft, CH
Glaunsinger, BA
AF Gaglia, Marta Maria
Rycroft, Chris H.
Glaunsinger, Britt A.
TI Transcriptome-Wide Cleavage Site Mapping on Cellular mRNAs Reveals
Features Underlying Sequence-Specific Cleavage by the Viral Ribonuclease
SOX
SO PLOS PATHOGENS
LA English
DT Article
ID HOST SHUTOFF; ENDONUCLEOLYTIC CLEAVAGE; PARALLEL ANALYSIS; PARE
LIBRARIES; HUMAN-CELLS; PROTEIN; KSHV; DEGRADATION; TARGETS; INFECTION
AB Many viruses express factors that reduce host gene expression through widespread degradation of cellular mRNA. An example of this class of proteins is the mRNA-targeting endoribonuclease SOX from the gamma-herpesvirus Kaposi's sarcoma-associated herpesvirus (KSHV). Previous studies indicated that cleavage of messenger RNAs (mRNA) by SOX occurs at specific locations defined by the sequence of the target RNA, which is at odds with the down-regulation of a large portion of cellular transcripts. In this study, we address this paradox by using high-throughput sequencing of cleavage intermediates combined with a custom bioinformatics-based analysis pipeline to identify SOX cleavage sites across the mRNA transcriptome. These data, coupled with targeted mutagenesis, reveal that while cleavage sites are specific and reproducible, they are defined by a degenerate sequence motif containing a small number of conserved residues rather than a strong consensus sequence. This degenerate element is well represented in both human and KSHV mRNA, and its presence correlates with RNA destabilization by SOX. This represents a new endonuclease targeting strategy, in which use of a degenerate targeting element enables RNA cleavage at specific locations without restricting the range of targets. Furthermore, it shows that strong target selectivity can be achieved without a high degree of sequence specificity.
C1 [Gaglia, Marta Maria] Tufts Univ, Sackler Sch Grad Biomed Sci, Program Mol Microbiol, Boston, MA 02111 USA.
[Gaglia, Marta Maria] Tufts Univ, Sch Med, Dept Mol Biol & Microbiol, Boston, MA 02111 USA.
[Rycroft, Chris H.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
[Rycroft, Chris H.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Math, Berkeley, CA 94720 USA.
[Glaunsinger, Britt A.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
[Glaunsinger, Britt A.] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA.
RP Gaglia, MM (reprint author), Tufts Univ, Sackler Sch Grad Biomed Sci, Program Mol Microbiol, Boston, MA 02111 USA.
EM Marta.Gaglia@tufts.edu; glaunsinger@berkeley.edu
FU NIH [CA136367, CA160556]; Burroughs Wellcome Foundation Investigators in
the Pathogenesis of Infectious Disease Award; W. M. Keck Foundation
Distinguished Young Scholars Award
FX This study was funded by the following grants to BAG: NIH CA136367, NIH
CA160556, Burroughs Wellcome Foundation Investigators in the
Pathogenesis of Infectious Disease Award, and a W. M. Keck Foundation
Distinguished Young Scholars Award. The funders had no role in study
design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 44
TC 3
Z9 3
U1 1
U2 9
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1553-7366
EI 1553-7374
J9 PLOS PATHOG
JI PLoS Pathog.
PD DEC
PY 2015
VL 11
IS 12
AR e1005305
DI 10.1371/journal.ppat.1005305
PG 25
WC Microbiology; Parasitology; Virology
SC Microbiology; Parasitology; Virology
GA DB2IZ
UT WOS:000368332800027
PM 26646420
ER
PT J
AU Saada, EA
DeMarco, SF
Shimogawa, MM
Hill, KL
AF Saada, Edwin A.
DeMarco, Stephanie F.
Shimogawa, Michelle M.
Hill, Kent L.
TI "With a Little Help from My Friends"-Social Motility in Trypanosoma
brucei
SO PLOS PATHOGENS
LA English
DT Article
ID ADENYLATE CYCLASES; TSETSE-FLIES; AFRICAN TRYPANOSOMES; SWARMING
MOTILITY; BIOFILM FORMATION; SURFACE GLYCOPROTEIN; FLAGELLAR MEMBRANE;
BLOOD-STREAM; CELL-DENSITY; FLY
C1 [Saada, Edwin A.; DeMarco, Stephanie F.; Shimogawa, Michelle M.; Hill, Kent L.] Univ Calif Los Angeles, Dept Microbiol Immunol & Mol Genet, Los Angeles, CA USA.
[DeMarco, Stephanie F.; Hill, Kent L.] Univ Calif Los Angeles, Inst Mol Biol, Los Angeles, CA USA.
RP Saada, EA (reprint author), Sandia Natl Labs, Livermore, CA USA.
EM kenthill@microbio.ucla.edu
FU NIH [R01AI052348]; Burroughs Wellcome Fund Investigator in Global
Infectious Disease award
FX Work in the authors' laboratory is supported by NIH grant R01AI052348
and a Burroughs Wellcome Fund Investigator in Global Infectious Disease
award to KLH. The funders had no role in study design, data collection
and analysis, decision to publish, or preparation of the manuscript.
NR 53
TC 1
Z9 1
U1 6
U2 8
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1553-7366
EI 1553-7374
J9 PLOS PATHOG
JI PLoS Pathog.
PD DEC
PY 2015
VL 11
IS 12
AR e1005272
DI 10.1371/journal.ppat.1005272
PG 9
WC Microbiology; Parasitology; Virology
SC Microbiology; Parasitology; Virology
GA DB2IZ
UT WOS:000368332800012
PM 26679190
ER
PT J
AU Nogales, E
AF Nogales, Eva
TI An electron microscopy journey in the study of microtubule structure and
dynamics
SO PROTEIN SCIENCE
LA English
DT Review
DE cryo-EM; microtubules; dynamic instability; GTP
ID ALPHA-BETA-TUBULIN; ZINC-INDUCED SHEETS; CRYOELECTRON MICROSCOPY;
3-DIMENSIONAL STRUCTURE; MOTOR PROTEINS; GTP HYDROLYSIS; CCD CAMERA; 400
KV; RESOLUTION; COMPLEX
AB Structural characterization of microtubules has been the realm of three-dimensional electron microscopy and thus has evolved hand in hand with the progress of this technique, from the initial 3D reconstructions of stained tubulin assemblies, and the first atomic model of tubulin by electron crystallography of 2D sheets of protofilaments, to the ever more detailed cryoelectron microscopy structures of frozen-hydrated microtubules. Most recently, hybrid helical and single particle image processing techniques, and the latest detector technology, have lead to atomic models built directly into the density maps of microtubules in different functional states, shading new light into the critical process of microtubule dynamic instability.
C1 [Nogales, Eva] Univ Calif Berkeley, Mol & Cell Biol Dept, Berkeley, CA 94720 USA.
[Nogales, Eva] Univ Calif Berkeley, Inst QB3, Berkeley, CA 94720 USA.
[Nogales, Eva] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
[Nogales, Eva] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Nogales, E (reprint author), Univ Calif Berkeley, Mol & Cell Biol Dept, Berkeley, CA 94720 USA.
EM enogales@lbl.gov
FU NIGMS [GM051487]; Howard Hughes Medical Institute
FX Grant sponsor: NIGMS; Grant number: GM051487; Grant sponsor: The Howard
Hughes Medical Institute Investigator.
NR 41
TC 1
Z9 1
U1 1
U2 17
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0961-8368
EI 1469-896X
J9 PROTEIN SCI
JI Protein Sci.
PD DEC
PY 2015
VL 24
IS 12
BP 1912
EP 1919
DI 10.1002/pro.2808
PG 8
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA DB1TN
UT WOS:000368292000002
PM 26401895
ER
PT J
AU Chou, TH
Delmar, JA
Wright, CC
Kumar, N
Radhakrishnan, A
Doh, JK
Licon, MH
Bolla, JR
Lei, HT
Rajashankar, KR
Su, CC
Purdy, GE
Yu, EW
AF Chou, Tsung-Han
Delmar, Jared A.
Wright, Catherine C.
Kumar, Nitin
Radhakrishnan, Abhijith
Doh, Julia K.
Licon, Meredith H.
Bolla, Jani Reddy
Lei, Hsiang-Ting
Rajashankar, Kanagalaghatta R.
Su, Chih-Chia
Purdy, Georgiana E.
Yu, Edward W.
TI Crystal structure of the Mycobacterium tuberculosis transcriptional
regulator Rv0302
SO PROTEIN SCIENCE
LA English
DT Article
DE Mycobacterial membrane protein large; Mycobacterial membrane protein;
small; TetR-family regulator; Rv0302
ID CELL-WALL; SULFOLIPID-1 BIOSYNTHESIS; FUNCTIONAL-ANALYSIS;
GRANULOMA-FORMATION; PROTEIN; RESISTANCE; REPRESSOR; VIRULENCE;
SOFTWARE; SYSTEM
AB Mycobacterium tuberculosis is a pathogenic bacterial species, which is neither Gram positive nor Gram negative. It has a unique cell wall, making it difficult to kill and conferring resistance to antibiotics that disrupt cell wall biosynthesis. Thus, the mycobacterial cell wall is critical to the virulence of these pathogens. Recent work shows that the mycobacterial membrane protein large (MmpL) family of transporters contributes to cell wall biosynthesis by exporting fatty acids and lipidic elements of the cell wall. The expression of the Mycobacterium tuberculosis MmpL proteins is controlled by a complicated regulatory network system. Here we report crystallographic structures of two forms of the TetR-family transcriptional regulator Rv0302, which participates in regulating the expression of MmpL proteins. The structures reveal a dimeric, two-domain molecule with architecture consistent with the TetR family of regulators. Comparison of the two Rv0302 crystal structures suggests that the conformational changes leading to derepression may be due to a rigid body rotational motion within the dimer interface of the regulator. Using fluorescence polarization and electrophoretic mobility shift assays, we demonstrate the recognition of promoter and intragenic regions of multiple mmpL genes by this protein. In addition, our isothermal titration calorimetry and electrophoretic mobility shift experiments indicate that fatty acids may be the natural ligand of this regulator. Taken together, these experiments provide new perspectives on the regulation of the MmpL family of transporters.
C1 [Chou, Tsung-Han; Delmar, Jared A.; Su, Chih-Chia; Yu, Edward W.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Wright, Catherine C.; Doh, Julia K.; Licon, Meredith H.; Purdy, Georgiana E.] Oregon Hlth & Sci Univ, Dept Mol Microbiol & Immunol, Portland, OR 97239 USA.
[Kumar, Nitin; Radhakrishnan, Abhijith; Bolla, Jani Reddy; Lei, Hsiang-Ting; Yu, Edward W.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
[Rajashankar, Kanagalaghatta R.] Cornell Univ, NE CAT, Argonne, IL 60439 USA.
[Rajashankar, Kanagalaghatta R.] Cornell Univ, Dept Chem & Chem Biol, Argonne Natl Lab, Argonne, IL 60439 USA.
RP Yu, EW (reprint author), Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
EM ewyu@iastate.edu
OI Licon, Meredith/0000-0002-1018-577X
FU NIH [R56AI114664]
FX Grant sponsor: NIH; Grant number: R56AI114664 (to G.E.P. and E.W.Y.).
NR 53
TC 1
Z9 1
U1 3
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0961-8368
EI 1469-896X
J9 PROTEIN SCI
JI Protein Sci.
PD DEC
PY 2015
VL 24
IS 12
BP 1942
EP 1955
DI 10.1002/pro.2802
PG 14
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA DB1TN
UT WOS:000368292000005
PM 26362239
ER
PT J
AU Morar, M
Evdokimova, E
Chang, C
Ensminger, AW
Savchenko, A
AF Morar, Mariya
Evdokimova, Elena
Chang, Changsoo
Ensminger, Alexander W.
Savchenko, Alexei
TI Crystal structure of the Legionella pneumophila lem10 effector reveals a
new member of the HD protein superfamily
SO PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS
LA English
DT Article
DE X-ray crystallography; multidomain protein; gram-negative pathogen;
secretion system substrate
ID ESCHERICHIA-COLI; BINDING DOMAIN; VIRULENCE; SYSTEM; GENOME;
PHOSPHODIESTERASE; PREDICTION; SERVER; TOOLS; MODEL
AB Legionella pneumophila, the intracellular pathogen that can cause severe pneumonia known as Legionnaire's disease, translocates close to 300 effectors inside the host cell using Dot/Icm type IVB secretion system. The structure and function for the majority of these effector proteins remains unknown. Here, we present the crystal structure of the L. pneumophila effector Lem10. The structure reveals a multidomain organization with the largest C-terminal domain showing strong structural similarity to the HD protein superfamily representatives. However, Lem10 lacks the catalytic His-Asp residue pair and does not show any in vitro phosphohydrolase enzymatic activity, typical for HD proteins. While the biological function of Lem10 remains elusive, our analysis shows that similar distinct features are shared by a significant number of HD domains found in Legionella proteins, including the SidE family of effectors known to play an important role during infection. Taken together our data point to the presence of a specific group of non-catalytic Legionella HD domains, dubbed LHDs, which are involved in pathogenesis. (C) 2015 Wiley Periodicals, Inc.
C1 [Morar, Mariya; Evdokimova, Elena; Savchenko, Alexei] Univ Toronto, Dept Chem Engn & Appl Chem, Toronto, ON M5S3E5, Canada.
[Chang, Changsoo] Argonne Natl Lab, Struct Biol Ctr, Biosci Div, Argonne, IL 60439 USA.
[Ensminger, Alexander W.] Univ Toronto, Dept Mol Genet, Toronto, ON M5S3E5, Canada.
RP Savchenko, A (reprint author), Univ Toronto, WB420B Chem Engn & Appl Chem,200 Coll St, Toronto, ON M5S3E5, Canada.
EM alexei.savchenko@utoronto.ca
FU NIH PSI [GM74492, GM094585]; Canadian Institutes of Health Research
[MOP-13340]; Natural Sciences and Engineering Research Council of Canada
[RGPIN-2014-03641]; U.S. Department of Energy, Office of Biological and
Environmental Research [DE-AC02-06CH11357]
FX Grant sponsor: NIH PSI Grants; Grant numbers: GM74492 and GM094585;
Grant sponsor: Canadian Institutes of Health Research; Grant number:
MOP-13340; Grant sponsor: Natural Sciences and Engineering Research
Council of Canada; Grant number: RGPIN-2014-03641; Grant sponsor: U.S.
Department of Energy, Office of Biological and Environmental Research;
Grant number: DE-AC02-06CH11357.
NR 29
TC 1
Z9 1
U1 0
U2 1
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-3585
EI 1097-0134
J9 PROTEINS
JI Proteins
PD DEC
PY 2015
VL 83
IS 12
BP 2319
EP 2325
DI 10.1002/prot.24933
PG 7
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA DB2IE
UT WOS:000368330700017
PM 26426142
ER
PT J
AU Jang, DH
Anderson-Cook, CM
AF Jang, Dae-Heung
Anderson-Cook, Christine M.
TI Visualization Approaches for Evaluating Ridge Regression Estimators in
Mixture and Mixture-Process Experiments
SO QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL
LA English
DT Article
DE multicollinearity; bias-variance trade-off; mixture-process experiments
ID DESIGN SPACE; PARAMETER; FRACTION
AB When the component proportions in mixture experiments are restricted by lower and upper bounds, the input space of a designed experiment space can become an irregular region that can induce multicollinearity problems when estimating the component proportion parameters. Thus, ridge regression provides a beneficial means of stabilizing the coefficient estimates in the fitted model. Previous research has focused on using prediction variance as a metric for determining an appropriate value of the ridge constant, k. We use visualization techniques to illustrate and evaluate ridge regression estimators and the robustness of estimation with respect to the variance and the bias. The addition of bias allows better balancing between the stability of the estimators and minimally changing the estimates. We illustrate the graphical methods with mixture and mixture-process examples from the literature. Copyright (C) 2014 John Wiley & Sons, Ltd.
C1 [Jang, Dae-Heung] Pukyong Natl Univ, Dept Stat, Busan, South Korea.
[Anderson-Cook, Christine M.] Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM 87545 USA.
RP Anderson-Cook, CM (reprint author), Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM 87545 USA.
EM candcook@gmail.com
NR 17
TC 1
Z9 1
U1 0
U2 1
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0748-8017
EI 1099-1638
J9 QUAL RELIAB ENG INT
JI Qual. Reliab. Eng. Int.
PD DEC
PY 2015
VL 31
IS 8
BP 1483
EP 1494
DI 10.1002/qre.1683
PG 12
WC Engineering, Multidisciplinary; Engineering, Industrial; Operations
Research & Management Science
SC Engineering; Operations Research & Management Science
GA DB2TQ
UT WOS:000368362900014
ER
PT J
AU Hamada, MS
Abes, JI
AF Hamada, M. S.
Abes, J. I.
TI Statistical Tests to Validate Predictive Models
SO QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL
LA English
DT Article
DE individuals control chart; regression control chart; power; (X)over-bar
and S control charts
AB This article presents validation tests to check a predictive model over time. These validation tests are like individuals, (X) over bar and S control charts. The individuals validation test is used when there are no replicates at the checked time points. The (X) over bar and S validation tests can be used when there are replicates. Their power is evaluated under various scenarios via a simulation study. Based on these results, the (X) over bar and S validation tests are recommended when there are replicate measurements. Copyright (c) 2014 John Wiley & Sons, Ltd.
C1 [Hamada, M. S.; Abes, J. I.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Hamada, MS (reprint author), Los Alamos Natl Lab, Stat Sci Grp, POB 1663, Los Alamos, NM 87545 USA.
EM hamada@lanl.gov
NR 4
TC 0
Z9 0
U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0748-8017
EI 1099-1638
J9 QUAL RELIAB ENG INT
JI Qual. Reliab. Eng. Int.
PD DEC
PY 2015
VL 31
IS 8
BP 1761
EP 1768
DI 10.1002/qre.1715
PG 8
WC Engineering, Multidisciplinary; Engineering, Industrial; Operations
Research & Management Science
SC Engineering; Operations Research & Management Science
GA DB2TQ
UT WOS:000368362900034
ER
PT J
AU Fraboni, B
Scida, A
Cosseddu, P
Wang, YQ
Nastasi, M
Milita, S
Bonfiglio, A
AF Fraboni, Beatrice
Scida, Alessandra
Cosseddu, Piero
Wang, Yongqiang
Nastasi, Michael
Milita, Silvia
Bonfiglio, Annalisa
TI Turning an organic semiconductor into a low-resistance material by ion
implantation
SO SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
LA English
DT Article
DE ion implantation; organic thin film; thin film transistor
ID THIN-FILM TRANSISTORS; FIELD-EFFECT TRANSISTORS; CONTACT RESISTANCE;
CHARGE INJECTION; TRANSPORT; POLYMER; VOLTAGE
AB We report on the effects of low energy ion implantation on thin films of pentacene, carried out to investigate the efficacy of this process in the fabrication of organic electronic devices. Two different ions, Ne and N, have been implanted and compared, to assess the effects of different reactivity within the hydrocarbon matrix. Strong modification of the electrical conductivity, stable in time, is observed following ion implantation. This effect is significantly larger for N implants (up to six orders of magnitude), which are shown to introduce stable charged species within the hydrocarbon matrix, not only damage as is the case for Ne implants. Fully operational pentacene thin film transistors have also been implanted and we show how a controlled N ion implantation process can induce stable modifications in the threshold voltage, without affecting the device performance.
C1 [Fraboni, Beatrice; Scida, Alessandra] Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, Italy.
[Cosseddu, Piero; Bonfiglio, Annalisa] Univ Cagliari, Dipartimento Ingn Elettr & Elettron, I-09123 Cagliari, Italy.
[Cosseddu, Piero; Bonfiglio, Annalisa] CNR INFM, I-41100 Modena, Italy.
[Wang, Yongqiang] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Nastasi, Michael] Univ Nebraska, NCESR, Lincoln, NE 68588 USA.
[Milita, Silvia] CNR, IMM, I-40126 Bologna, Italy.
RP Fraboni, B (reprint author), Univ Bologna, Dipartimento Fis & Astron, Viale Berti Pichat 6-2, I-40127 Bologna, Italy.
EM beatrice.fraboni@unibo.it
FU National Nuclear Security Administration of the US Department of Energy
[DE-AC52-06NA25396]
FX This work was performed, in part, at the Center for Integrated
Nanotechnologies, a US Department of Energy, Office of Basic Energy
Sciences user facility. Los Alamos National Laboratory, an affirmative
action equal opportunity employer, is operated by Los Alamos National
Security, LLC, for the National Nuclear Security Administration of the
US Department of Energy under contract DE-AC52-06NA25396. The authors
are grateful to Dr Qing Su for helpful discussion on FTIR analyses.
NR 25
TC 0
Z9 0
U1 2
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1468-6996
EI 1878-5514
J9 SCI TECHNOL ADV MAT
JI Sci. Technol. Adv. Mater.
PD DEC
PY 2015
VL 16
IS 6
AR 065008
DI 10.1088/1468-6996/16/6/065008
PG 6
WC Materials Science, Multidisciplinary
SC Materials Science
GA DB2JJ
UT WOS:000368333800008
PM 27877850
ER
PT J
AU Powell, JD
AF Powell, Joshua D.
TI From Pandemic Preparedness to Biofuel Production: Tobacco Finds Its
Biotechnology Niche in North America
SO AGRICULTURE-BASEL
LA English
DT Editorial Material
DE Agrobacterium; Nicotiana benthamiana; tobacco; Zmapp
ID VIRUS-LIKE PARTICLES; SUBUNIT VACCINE CANDIDATE; HUMAN
MONOCLONAL-ANTIBODY; HUMAN HOOKWORM VACCINE; HIGH-LEVEL PRODUCTION; DNA
REPLICON SYSTEM; ENVELOPE DOMAIN-III; TMV-BASED VECTOR; TOXIN B-SUBUNIT;
WEST NILE VIRUS
AB In 2012 scientists funded by the United States Defense Advanced Research Projects Agency (DARPA) produced 10 million doses of influenza vaccine in tobacco in a milestone deadline of one month. Recently the experimental antibody cocktail Zmapp, also produced in tobacco, has shown promise as an emergency intervention therapeutic against Ebola virus. These two examples showcase how collaborative efforts between government, private industry and academia are applying plant biotechnology to combat pathogenic agents. Opportunities now exist repurposing tobacco expression systems for exciting new applications in synthetic biology, biofuels production and industrial enzyme production. As plant-produced biotherapeutics become more mainstream, government funding agencies need to be cognizant of the idea that many plant-produced biologicals are often safer, cheaper, and just as efficacious as traditionally used expression systems.
C1 [Powell, Joshua D.] Pacific NW Natl Lab, Chem & Biol Signature Sci Grp, Richland, WA 99352 USA.
RP Powell, JD (reprint author), Pacific NW Natl Lab, Chem & Biol Signature Sci Grp, Richland, WA 99352 USA.
EM joshua.powell@pnnl.gov
NR 118
TC 2
Z9 2
U1 7
U2 16
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 2077-0472
J9 AGRICULTURE-BASEL
JI Agriculture-Basel
PD DEC
PY 2015
VL 5
IS 4
BP 901
EP 917
DI 10.3390/agriculture5040901
PG 17
WC Agronomy
SC Agriculture
GA DA2CM
UT WOS:000367602900001
ER
PT J
AU Casella, AM
Scheele, RD
McNamara, BK
AF Casella, Andrew M.
Scheele, Randall D.
McNamara, Bruce K.
TI Characterization of the kinetics of NF3-fluorination of NpO2
SO AIP ADVANCES
LA English
DT Article
ID FLUORIDE VOLATILITY METHOD; THERMAL-ANALYSIS KINETICS; REPROCESSING
SYSTEM; NUCLEAR-FUELS; NF3; UO2
AB Solid NpO2 has been contacted by gaseous NF3 under isothermal conditions at 450 degrees C, 475 degrees C, and 500 degrees C; and the resulting reactions have been monitored using thermogravimetric analysis. In each case, at least two sequential reactions are clearly observed. The first reaction is fluorination of NpO2 to NpF4 and the second is oxidation and fluorination of NpF4 to NpF6. Careful observation of the experimental reaction curves reveals evidence of several physical and chemical mechanisms occurring sequentially and at times simultaneously. As such, a mathematical modeling approach utilizing a combination of sequential and parallel fundamental gas-solid reaction mechanisms (chemical reaction, diffusion, and phase boundary) is, in general, found to provide representative reaction curves that are in good agreement with experimental reaction curves. The correspondence of fundamental reaction mechanisms with distinctive characteristics of the experimental reaction curves (maximums and inflection points) provides insight into the physical and chemical nature of each reaction being monitored. (C) 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
C1 [Casella, Andrew M.; Scheele, Randall D.; McNamara, Bruce K.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Casella, AM (reprint author), Pacific NW Natl Lab, POB 999,Battelle Blvd, Richland, WA 99352 USA.
EM andrew.casella@pnnl.gov
OI Casella, Andrew/0000-0002-4053-6593
FU United States Department of Energy (DOE) [DE-AC05-76RL01830];
DOE-Nuclear Energy's Fuel Cycle Research and Development Program; PNNL's
Sustained Nuclear Power Initiative
FX The work described in this article was performed by Pacific Northwest
National Laboratory (PNNL), which is operated by Battelle for the United
States Department of Energy (DOE) under Contract DE-AC05-76RL01830. The
DOE-Nuclear Energy's Fuel Cycle Research and Development Program and
PNNL's Sustained Nuclear Power Initiative funded our efforts.
NR 26
TC 0
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U1 0
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2158-3226
J9 AIP ADV
JI AIP Adv.
PD DEC
PY 2015
VL 5
IS 12
AR 127230
DI 10.1063/1.4939143
PG 16
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA DA1ZY
UT WOS:000367596300073
ER
PT J
AU Jeen, H
Lee, HN
AF Jeen, Hyoungjeen
Lee, Ho Nyung
TI Structural evolution of epitaxial SrCoOx films near topotactic phase
transition
SO AIP ADVANCES
LA English
DT Article
ID REDOX REACTIONS; NEUTRON-DIFFRACTION; LOW-TEMPERATURE; ION-TRANSPORT;
PEROVSKITES; OXIDE
AB Control of oxygen stoichiometry in complex oxides via topotactic phase transition is an interesting avenue to not only modifying the physical properties, but utilizing in many energy technologies, such as energy storage and catalysts. However, detailed structural evolution in the close proximity of the topotactic phase transition in multivalent oxides has not been much studied. In this work, we used strontium cobaltites (SrCoOx) epitaxially grown by pulsed laser epitaxy (PLE) as a model system to study the oxidation-driven evolution of the structure, electronic, and magnetic properties. We grew coherently strained SrCoO2.5 thin films and performed post-annealing at various temperatures for topotactic conversion into the perovskite phase (SrCoO3-delta). We clearly observed significant changes in electronic transport, magnetism, and microstructure near the critical temperature for the topotactic transformation from the brownmillerite to the perovskite phase. Nevertheless, the overall crystallinity was well maintained without much structural degradation, indicating that topotactic phase control can be a useful tool to control the physical properties repeatedly via redox reactions. (C) 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
C1 [Jeen, Hyoungjeen; Lee, Ho Nyung] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Jeen, Hyoungjeen] Pusan Natl Univ, Dept Phys, Busan 609735, South Korea.
RP Lee, HN (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM hnlee@ornl.gov
RI Lee, Ho Nyung/K-2820-2012
OI Lee, Ho Nyung/0000-0002-2180-3975
FU U.S. Department of Energy, Office of Science, Basic Energy Sciences,
Materials Sciences and Engineering Division
FX We greatly appreciate J. Petrie for technical assistance. This work was
supported by the U.S. Department of Energy, Office of Science, Basic
Energy Sciences, Materials Sciences and Engineering Division.
NR 23
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U1 6
U2 28
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2158-3226
J9 AIP ADV
JI AIP Adv.
PD DEC
PY 2015
VL 5
IS 12
AR 127123
DI 10.1063/1.4938547
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA DA1ZY
UT WOS:000367596300023
ER
PT J
AU Kim, JS
Kim, SY
Kim, DH
Ott, RT
Kim, HG
Lee, MH
AF Kim, J. S.
Kim, S. Y.
Kim, D. H.
Ott, R. T.
Kim, H. G.
Lee, M. H.
TI Effect of hydrothermal condition on the formation of multi-component
oxides of Ni-based metallic glass under high temperature water near the
critical point (vol 5, 077132, 2015)
SO AIP ADVANCES
LA English
DT Correction
C1 [Kim, J. S.] Iljin Global Co Ltd, Headquarters Bearing Div, Seoul 135875, South Korea.
[Kim, S. Y.; Lee, M. H.] Korea Inst Ind Technol, Rare Met R&D Grp, Inchon 406840, South Korea.
[Kim, D. H.] Yonsei Univ, Ctr Noncrystalline Mat, Seoul 120749, South Korea.
[Ott, R. T.] US DOE, Div Mat & Engn, Ames Lab, Ames, IA 50011 USA.
[Kim, H. G.] Korea Atom Energy Inst, LWR Fuel Technol Div, Daejeon 305600, South Korea.
RP Lee, MH (reprint author), Korea Inst Ind Technol, Rare Met R&D Grp, Inchon 406840, South Korea.
EM mhlee1@kitech.re.kr
NR 1
TC 0
Z9 0
U1 0
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2158-3226
J9 AIP ADV
JI AIP Adv.
PD DEC
PY 2015
VL 5
IS 12
AR 129903
DI 10.1063/1.4939515
PG 1
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA DA1ZY
UT WOS:000367596300088
ER
PT J
AU Xue, B
Katan, C
Bjorgaard, JA
Kobayashi, T
AF Xue, B.
Katan, C.
Bjorgaard, J. A.
Kobayashi, T.
TI Non-degenerate two photon absorption enhancement for laser dyes by
precise lock-in detection
SO AIP ADVANCES
LA English
DT Article
ID EXCITATION CROSS-SECTIONS; NM; SPECTROSCOPY; GENERATION; MICROSCOPY
AB This study demonstrates a measurement system for a non-degenerate two-photon absorption (NDTPA) spectrum. The NDTPA light sources are a white light super continuum beam (WLSC, 500 similar to 720 nm) and a fundamental beam (798 nm) from a Ti:Sapphire laser. A reliable broadband NDTPA spectrum is acquired in a single-shot detection procedure using a 128-channel lock-in amplifier. The NDTPA spectra for several common laser dyes are measured. Two photon absorption cross section enhancements are found in the experiment and validated by theoretical calculation for all of the chromophores. (C) 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
C1 [Xue, B.; Kobayashi, T.] Univ Electrocommun, Fac Informat & Engn, Adv Ultrafast Laser Res Ctr, Chofu, Tokyo 1828585, Japan.
[Xue, B.; Kobayashi, T.] Univ Electrocommun, Fac Informat & Engn, Dept Engn Sci, Chofu, Tokyo 1828585, Japan.
[Xue, B.; Kobayashi, T.] Japan Sci & Technol Agcy, CREST, Chiyoda Ku, Tokyo 1020075, Japan.
[Katan, C.] Univ Rennes 1, UMR CNRS 6226, Inst Sci Chim Rennes, F-35042 Rennes, France.
[Bjorgaard, J. A.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Bjorgaard, J. A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
[Kobayashi, T.] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30010, Taiwan.
[Kobayashi, T.] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan.
RP Kobayashi, T (reprint author), Univ Electrocommun, Fac Informat & Engn, Adv Ultrafast Laser Res Ctr, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan.
EM kobayashi@ils.uec.ac.jp
OI Bjorgaard, Josiah/0000-0003-3679-2487; KATAN,
Claudine/0000-0002-2017-5823
FU National Science Council of the Republic of China, Taiwan [NSC
98-2112-M-009-001-MY3]; Ministry of Education, Aiming for Top University
(MOE ATU) Program at National Chiao-Tung University (NCTU); Japan
Society for the Promotion of Science [24740261]; Institute of Laser
Engineering, Osaka University [B1-27]; Chinese Academy of Sciences; U.S.
Department of Energy through the Los Alamos National Laboratory (LANL)
LDRD Program; National Nuclear Security Administration of the U.S.
Department of Energy [DE-AC52-06NA25396]; Center for Nonlinear Studies
(CNLS) at LANL
FX This work is supported by the National Science Council of the Republic
of China, Taiwan (NSC 98-2112-M-009-001-MY3), and a grant from the
Ministry of Education, Aiming for Top University (MOE ATU) Program at
National Chiao-Tung University (NCTU). This study is financially
supported by a Grant-in-Aid for Scientific Research (No. 24740261)
received from the Japan Society for the Promotion of Science and a joint
research project at the Institute of Laser Engineering, Osaka
University, under contract number B1-27. The research has been also
supported by "100 Talents Program of The Chinese Academy of Sciences".
C.K. acknowledges the HPC resources of CINES and of IDRIS under the
allocations 2014-[x2014080649] and 2015-[x2015080649] made by GENCI
(Grand Equipement National de Calcul Intensif). JAB acknowledges support
of the U.S. Department of Energy through the Los Alamos National
Laboratory (LANL) LDRD Program. LANL is operated by Los Alamos National
Security, LLC, for the National Nuclear Security Administration of the
U.S. Department of Energy under contract DE-AC52-06NA25396. We also
acknowledge support of the Center for Nonlinear Studies (CNLS) at LANL
and Sergei Tretiak for helpful discussion.
NR 35
TC 0
Z9 0
U1 3
U2 12
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2158-3226
J9 AIP ADV
JI AIP Adv.
PD DEC
PY 2015
VL 5
IS 12
AR 127138
DI 10.1063/1.4939568
PG 11
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA DA1ZY
UT WOS:000367596300038
ER
PT J
AU Andonov, R
Djidjev, H
Klau, GW
Le Boudic-Jamin, M
Wohlers, I
AF Andonov, Rumen
Djidjev, Hristo
Klau, Gunnar W.
Le Boudic-Jamin, Mathilde
Wohlers, Inken
TI Automatic Classification of Protein Structure Using the Maximum Contact
Map Overlap Metric
SO ALGORITHMS
LA English
DT Article
DE maximum contact map overlap; protein space metric; k-nearest neighbor
classification; superfamily classification; SCOP
ID STRUCTURE ALIGNMENTS; GAUSS INTEGRALS; ALGORITHM
AB In this work, we propose a new distance measure for comparing two protein structures based on their contact map representations. We show that our novel measure, which we refer to as the maximum contact map overlap (max-CMO) metric, satisfies all properties of a metric on the space of protein representations. Having a metric in that space allows one to avoid pairwise comparisons on the entire database and, thus, to significantly accelerate exploring the protein space compared to no-metric spaces. We show on a gold standard superfamily classification benchmark set of 6759 proteins that our exact k-nearest neighbor (k-NN) scheme classifies up to 224 out of 236 queries correctly and on a larger, extended version of the benchmark with 60, 850 additional structures, up to 1361 out of 1369 queries. Our k-NN classification thus provides a promising approach for the automatic classification of protein structures based on flexible contact map overlap alignments.
C1 [Andonov, Rumen; Le Boudic-Jamin, Mathilde] INRIA Rennes Bretagne Atlantique, F-35042 Rennes, France.
[Andonov, Rumen; Le Boudic-Jamin, Mathilde] Univ Rennes 1, F-35042 Rennes, France.
[Djidjev, Hristo] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
[Klau, Gunnar W.] CWI, Life Sci, NL-1090 GB Amsterdam, Netherlands.
[Wohlers, Inken] Univ Duisburg Essen, Genome Informat, D-45147 Essen, Germany.
[Wohlers, Inken] Med Lubeck, Platform Genome Analyt, Inst Neurogenet, D-23562 Lubeck, Germany.
[Wohlers, Inken] Med Lubeck, Platform Genome Analyt, Inst Integrat & Expt Genom, D-23562 Lubeck, Germany.
RP Andonov, R (reprint author), INRIA Rennes Bretagne Atlantique, Campus Beaulieu, F-35042 Rennes, France.
EM rumen.andonov@inria.fr; djidjev@lanl.gov; Gunnar.Klau@cwi.nl;
mathilde.le_boudic-jamin@inria.fr; Inken.Wohlers@uni-luebeck.de
NR 24
TC 0
Z9 0
U1 1
U2 3
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 1999-4893
J9 ALGORITHMS
JI Algorithms
PD DEC
PY 2015
VL 8
IS 4
BP 850
EP 869
DI 10.3390/a8040850
PG 20
WC Mathematics
SC Mathematics
GA DA2IK
UT WOS:000367618300004
ER
PT J
AU Diao, S
Blackburn, JL
Hong, GS
Antaris, AL
Chang, JL
Wu, JZ
Zhang, B
Cheng, K
Kuo, CJ
Dai, HJ
AF Diao, Shuo
Blackburn, Jeffrey L.
Hong, Guosong
Antaris, Alexander L.
Chang, Junlei
Wu, Justin Z.
Zhang, Bo
Cheng, Kai
Kuo, Calvin J.
Dai, Hongjie
TI Fluorescence Imaging In Vivo at Wavelengths beyond 1500 nm
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE cancer; fluorescence; imaging agents; nanotechnology; near infrared
ID WALLED CARBON NANOTUBES; NEAR-INFRARED WINDOW; II FLUORESCENCE; MICE;
FLUOROPHORES; ULTRASOUND
AB Compared to imaging in the visible and nearinfrared regions below 900 nm, imaging in the second nearinfrared window (NIR-II, 1000-1700 nm) is a promising method for deep-tissue high-resolution optical imaging in vivo mainly owing to the reduced scattering of photons traversing through biological tissues. Herein, semiconducting single-walled carbon nanotubes with large diameters were used for in vivo fluorescence imaging in the long-wavelength NIR region (1500-1700 nm, NIR-IIb). With this imaging agent, 3-4 mm wide capillary blood vessels at a depth of about 3 mm could be resolved. Meanwhile, the blood-flow speeds in multiple individual vessels could be mapped simultaneously. Furthermore, NIR-IIb tumor imaging of a live mouse was explored. NIR-IIb imaging can be generalized to a wide range of fluorophores emitting at up to 1700 nm for high-performance in vivo optical imaging.
C1 [Diao, Shuo; Hong, Guosong; Antaris, Alexander L.; Wu, Justin Z.; Zhang, Bo; Dai, Hongjie] Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
[Blackburn, Jeffrey L.] Natl Renewable Energy Lab, Chem & Mat Sci Ctr, Golden, CO 80401 USA.
[Chang, Junlei; Kuo, Calvin J.] Stanford Univ, Sch Med, Div Hematol, Stanford, CA 94305 USA.
[Cheng, Kai] Stanford Univ, Sch Med, Dept Radiol, Stanford, CA 94305 USA.
[Cheng, Kai] Stanford Univ, Sch Med, Bio X Program, Stanford, CA 94305 USA.
RP Dai, HJ (reprint author), Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
EM hdai@stanford.edu
NR 26
TC 13
Z9 13
U1 33
U2 80
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1433-7851
EI 1521-3773
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PD DEC 1
PY 2015
VL 54
IS 49
BP 14758
EP 14762
DI 10.1002/anie.201507473
PG 5
WC Chemistry, Multidisciplinary
SC Chemistry
GA DA3UB
UT WOS:000367723400025
PM 26460151
ER
PT J
AU Yang, B
Dyck, O
Poplawsky, J
Keum, J
Das, S
Puretzky, A
Aytug, T
Joshi, PC
Rouleau, CM
Duscher, G
Geohegan, DB
Xiao, K
AF Yang, Bin
Dyck, Ondrej
Poplawsky, Jonathan
Keum, Jong
Das, Sanjib
Puretzky, Alexander
Aytug, Tolga
Joshi, Pooran C.
Rouleau, Christopher M.
Duscher, Gerd
Geohegan, David B.
Xiao, Kai
TI Controllable Growth of Perovskite Films by Room-Temperature Air Exposure
for Efficient Planar Heterojunction Photovoltaic Cells
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE air exposure; in situ X-ray diffraction; perovskites; photovoltaic
devices; thin films
ID SOLAR-CELLS; DEPOSITION; INTERFACE
AB A two-step solution processing approach has been established to grow void-free perovskite films for low-cost high-performance planar heterojunction photovoltaic devices. A high-temperature thermal annealing treatment was applied to drive the diffusion of CH3NH3I precursor molecules into a compact PbI2 layer to form perovskite films. However, thermal annealing for extended periods led to degraded device performance owing to the defects generated by decomposition of perovskite into PbI2. A controllable layer-by-layer spin-coating method was used to grow "bilayer" CH3NH3I/PbI2 films, and then drive the interdiffusion between PbI2 and CH3NH3I layers by a simple air exposure at room temperature for making well-oriented, highly crystalline perovskite films without thermal annealing. This high degree of crystallinity resulted in a carrier diffusion length of ca. 800 nm and a high device efficiency of 15.6%, which is comparable to values reported for thermally annealed perovskite films.
C1 [Yang, Bin; Poplawsky, Jonathan; Keum, Jong; Puretzky, Alexander; Rouleau, Christopher M.; Geohegan, David B.; Xiao, Kai] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Dyck, Ondrej; Duscher, Gerd] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Das, Sanjib] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA.
[Aytug, Tolga] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Joshi, Pooran C.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Xiao, K (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
EM xiaok@ornl.gov
RI Puretzky, Alexander/B-5567-2016; Yang, Bin/P-8529-2014; Duscher,
Gerd/G-1730-2014; Rouleau, Christopher/Q-2737-2015; Geohegan,
David/D-3599-2013; Keum, Jong/N-4412-2015
OI Puretzky, Alexander/0000-0002-9996-4429; Yang, Bin/0000-0002-5667-9126;
Duscher, Gerd/0000-0002-2039-548X; Rouleau,
Christopher/0000-0002-5488-3537; Geohegan, David/0000-0003-0273-3139;
Keum, Jong/0000-0002-5529-1373
NR 20
TC 11
Z9 11
U1 4
U2 61
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1433-7851
EI 1521-3773
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PD DEC 1
PY 2015
VL 54
IS 49
BP 14862
EP 14865
DI 10.1002/anie.201505882
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA DA3UB
UT WOS:000367723400047
PM 26486584
ER
PT J
AU Lee, S
Meyer, TL
Sohn, C
Lee, D
Nichols, J
Lee, D
Seo, SSA
Freeland, JW
Noh, TW
Lee, HN
AF Lee, Shinbuhm
Meyer, Tricia L.
Sohn, Changhee
Lee, Donghwa
Nichols, John
Lee, Dongkyu
Seo, Sung S. Ambrose
Freeland, John W.
Noh, Tae Won
Lee, Ho Nyung
TI Electronic structure and insulating gap in epitaxial VO2 polymorphs
SO APL MATERIALS
LA English
DT Article
ID TRANSITION-METAL OXIDES; VANADIUM DIOXIDE; PHASE-TRANSITION;
MOTT-HUBBARD; BAND THEORY; DIFFRACTION; EXCHANGE; PEIERLS; DRIVEN; VIEW
AB Determining the origin of the insulating gap in the monoclinic VO2(M1) is a longstanding issue. The difficulty of this study arises from the simultaneous occurrence of structural and electronic transitions upon thermal cycling. Here, we compare the electronic structure of the M1 phase with that of single crystalline insulating VO2(A) and VO2(B) thin films to better understand the insulating phase of VO2. As these A and B phases do not undergo a structural transition upon thermal cycling, we comparatively study the origin of the gap opening in the insulating VO2 phases. By x-ray absorption and optical spectroscopy, we find that the shift of unoccupied t(2g) orbitals away from the Fermi level is a common feature, which plays an important role for the insulating behavior in VO2 polymorphs. The distinct splitting of the half-filled t(2g) orbital is observed only in the M1 phase, widening the bandgap up to similar to 0.6 eV. Our approach of comparing all three insulating VO2 phases provides insight into a better understanding of the electronic structure and the origin of the insulating gap in VO2. (C) 2015 Author(s).
C1 [Lee, Shinbuhm; Meyer, Tricia L.; Nichols, John; Lee, Dongkyu; Lee, Ho Nyung] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Sohn, Changhee; Noh, Tae Won] Inst for Basic Sci Korea, Ctr Correlated Electron Syst, Seoul 08826, South Korea.
[Sohn, Changhee; Noh, Tae Won] Seoul Natl Univ, Dept Phys & Astron, Seoul 08826, South Korea.
[Lee, Donghwa] Chonnam Natl Univ, Sch Mat Sci & Engn, Gwangju 61186, South Korea.
[Seo, Sung S. Ambrose] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA.
[Freeland, John W.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Lee, S (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM hnlee@ornl.gov
RI Lee, Ho Nyung/K-2820-2012; LEE, SHINBUHM/A-9494-2011; Seo,
Ambrose/B-6964-2008
OI Lee, Ho Nyung/0000-0002-2180-3975; LEE, SHINBUHM/0000-0002-4907-7362;
Seo, Ambrose/0000-0002-7055-5314
FU U.S. Department of Energy, Office of Science, Basic Energy Sciences,
Materials Sciences and Engineering Division; National Science Foundation
[DMR-1454200]; U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences [DE-AC02-06CH11357]
FX This work was supported by the U.S. Department of Energy, Office of
Science, Basic Energy Sciences, Materials Sciences and Engineering
Division. Work for optical spectroscopy was supported by No.
IBS-R009-D1. Computational work was supported by the National Institute
of Supercomputing and Network/Korea Institute of Science and Technology
Information with supercomputing resources including technical support
No. KSC-2015-C3-034. Spectroscopic ellipsometry at the University of
Kentucky was supported by the National Science Foundation grant
DMR-1454200. Work at the Advanced Photon Source was supported by the
U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357.
NR 52
TC 0
Z9 0
U1 10
U2 32
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2166-532X
J9 APL MATER
JI APL Mater.
PD DEC
PY 2015
VL 3
IS 12
AR 126109
DI 10.1063/1.4939004
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA DA2BM
UT WOS:000367600300010
ER
PT J
AU Meyer, TL
Jiang, L
Park, S
Egami, T
Lee, HN
AF Meyer, T. L.
Jiang, L.
Park, S.
Egami, T.
Lee, H. N.
TI Strain-relaxation and critical thickness of epitaxial La1.85Sr0.15CuO4
films
SO APL MATERIALS
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTOR; LA2-XSRXCUO4 SINGLE-CRYSTALS; UNIAXIAL
PRESSURE-DEPENDENCE; THIN-FILMS; TRANSITION-TEMPERATURE; TC;
LA2NIO4+DELTA; CONDUCTIVITY; PLANE
AB We report the thickness-dependent strain-relaxation behavior and the associated impacts upon the superconductivity in epitaxial La1.85Sr0.15CuO4 films grown on different substrates, which provide a range of strain. We have found that the critical thickness for the onset of superconductivity in La1.85Sr0.15CuO4 films is associated with the finite thickness effect and epitaxial strain. In particular, thin films with tensile strain greater than similar to 0.25% revealed no superconductivity. We attribute this phenomenon to the inherent formation of oxygen vacancies that can be minimized via strain relaxation. (C) 2015 Author(s).
C1 [Meyer, T. L.; Jiang, L.; Park, S.; Egami, T.; Lee, H. N.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Jiang, L.; Egami, T.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Park, S.] Pusan Natl Univ, Dept Phys, Busan 46241, South Korea.
[Park, S.; Egami, T.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RP Meyer, TL (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM hnlee@ornl.gov
RI Lee, Ho Nyung/K-2820-2012
OI Lee, Ho Nyung/0000-0002-2180-3975
FU U.S. Department of Energy, Office of Science, Basic Energy Sciences,
Materials Sciences, and Engineering Division
FX This work was supported by the U.S. Department of Energy, Office of
Science, Basic Energy Sciences, Materials Sciences, and Engineering
Division. S.K.P. was supported in part by NRF Korea (No. 2011-0031933)
for his contribution on growth optimization and data analysis.
NR 34
TC 1
Z9 1
U1 4
U2 9
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2166-532X
J9 APL MATER
JI APL Mater.
PD DEC
PY 2015
VL 3
IS 12
AR 126102
DI 10.1063/1.4937170
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA DA2BM
UT WOS:000367600300003
ER
PT J
AU Rochford, C
Medlin, DL
Erickson, KJ
Siegal, MP
AF Rochford, C.
Medlin, D. L.
Erickson, K. J.
Siegal, M. P.
TI Controlling compositional homogeneity and crystalline orientation in
Bi0.8Sb0.2 thermoelectric thin films
SO APL MATERIALS
LA English
DT Article
ID BISMUTH-ANTIMONY ALLOYS; TRANSPORT-PROPERTIES; ELECTRICAL-PROPERTIES;
BI1-XSBX NANOWIRES; BI; GROWTH
AB Compositional-homogeneity and crystalline-orientation are necessary attributes to achieve high thermoelectric performance in Bi1-xSbx thin films. Following deposition in vacuum, and upon air exposure, we find that 50%-95% of the Sb in 100-nm thick films segregates to form a nanocrystalline Sb2O3 surface layer, leaving the film bulk as Bi-metal. However, we demonstrate that a thin SiN capping layer deposited prior to air exposure prevents Sb-segregation, preserving a uniform film composition. Furthermore, the capping layer enables annealing in forming gas to improve crystalline orientations along the preferred trigonal axis, beneficially reducing electrical resistivity. (C) 2015 Author(s).
C1 [Rochford, C.; Siegal, M. P.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Medlin, D. L.; Erickson, K. J.] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Rochford, C (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM crochfo@sandia.gov; mpsiega@sandia.gov
OI Rochford, Caitlin/0000-0002-5070-209X
FU Laboratory Directed Research and Development program at Sandia National
Laboratories; U.S. Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX This work is supported by the Laboratory Directed Research and
Development program at Sandia National Laboratories. Sandia National
Laboratories is a multiprogram laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Company, for
the U.S. Department of Energy's National Nuclear Security Administration
under Contract No. DE-AC04-94AL85000.
NR 19
TC 0
Z9 0
U1 7
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2166-532X
J9 APL MATER
JI APL Mater.
PD DEC
PY 2015
VL 3
IS 12
AR 126106
DI 10.1063/1.4937894
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA DA2BM
UT WOS:000367600300007
ER
PT J
AU Quan, JN
Liu, Q
Li, X
Gao, Y
Jia, XC
Sheng, JJ
Liu, YG
AF Quan, Jiannong
Liu, Quan
Li, Xia
Gao, Yang
Jia, Xingcan
Sheng, Jiujiang
Liu, Yangang
TI Effect of heterogeneous aqueous reactions on the secondary formation of
inorganic aerosols during haze events
SO ATMOSPHERIC ENVIRONMENT
LA English
DT Article
DE Beijing hazes; Heterogeneous aqueous reactions; Inorganic aerosol;
Particles size
ID NORTH CHINA PLAIN; ATMOSPHERIC BOUNDARY-LAYER; MASS-SPECTROMETER;
HIGH-RESOLUTION; RELATIVE-HUMIDITY; EVOLUTION; POLLUTION; IMPACT; CITY;
WINTERTIME
AB The effect of heterogeneous aqueous reactions on the secondary formation of inorganic aerosols during haze events was investigated by analysis of comprehensive measurements of aerosol composition and concentrations [e.g., particular matters (PM2.5), nitrate (NO3), sulfate (SO4), ammonium (NH4)], gas-phase precursors [e.g., nitrogen oxides (NOx), sulfur dioxide (SO2), and ozone (O-3)], and relevant meteorological parameters [e.g., visibility and relative humidity (RH)]. The measurements were conducted in Beijing, China from Sep. 07, 2012 to Jan. 16, 2013. The results show that the conversion ratios of N from NOx to nitrate (N-ratio) and S from SO2 to sulfate (S-ratio) both significantly increased in haze events, suggesting enhanced conversions from NOx and SO2 to their corresponding particle phases in the late haze period. Further analysis shows that N-ratio and S-ratio increased with increasing RH, with N-ratio and Sratio being only 0.04 and 0.03, respectively, when RH <40%, and increasing up to 0.16 and 0.12 when RH reached 60-80%, respectively. The enhanced conversion ratios of N and S in the late haze period is likely due to heterogeneous aqueous reactions, because solar radiation and thus the photochemical capacity are reduced by the increases in aerosols and RH. This point was further affirmed by the relationships of N-ratio and S-ratio to O-3: the conversion ratios increase with decreasing O-3 concentration when O-3 concentration is lower than <15 ppb but increased with increasing O-3 when O-3 concentration is higher than 15 ppb. The results suggest that heterogeneous aqueous reactions likely changed aerosols and their precursors during the haze events: in the beginning of haze events, the precursor gases accumulated quickly due to high emission and low reaction rate; the occurrence of heterogeneous aqueous reactions in the late haze period, together with the accumulated high concentrations of precursor gases such as SO2 and NOx, accelerated the formation of secondary inorganic aerosols, and led to rapid increase of the PM2.5 concentration. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Quan, Jiannong; Liu, Quan; Li, Xia; Gao, Yang; Jia, Xingcan; Sheng, Jiujiang] Beijing Key Lab Cloud Precipitat & Atmospher Wate, Beijing, Peoples R China.
[Quan, Jiannong; Liu, Quan; Sheng, Jiujiang] Chinese Meteorol Adm, Inst Urban Meteorol, Beijing, Peoples R China.
[Liu, Yangang] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Quan, JN (reprint author), Beijing Key Lab Cloud Precipitat & Atmospher Wate, Beijing, Peoples R China.
EM quanjn1975@gmail.com; liuquan@bjmb.gov.cn
RI Liu, Yangang/H-6154-2011
FU Beijing Municipal Science & Technology Commission [Z141100001014017,
8144049]; National Basic Research Program of China [2011CB403401];
National Natural Science Foundation of China [41405127]; US Department
of Energy's Atmospheric System Research (ASR) program
FX This research is partially supported by Projects of Beijing Municipal
Science & Technology Commission under Grant No. Z141100001014017, No.
8144049. This research is also partially supported by the National Basic
Research Program of China (2011CB403401) and the National Natural
Science Foundation of China (41405127). Y. Liu is supported by the US
Department of Energy's Atmospheric System Research (ASR) program.
NR 29
TC 6
Z9 7
U1 26
U2 68
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1352-2310
EI 1873-2844
J9 ATMOS ENVIRON
JI Atmos. Environ.
PD DEC
PY 2015
VL 122
BP 306
EP 312
DI 10.1016/j.atmosenv.2015.09.068
PG 7
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA CZ9JJ
UT WOS:000367413600031
ER
PT J
AU Zhu, DZ
Gillies, JA
Etyemezian, V
Nikolich, G
Shaw, WJ
AF Zhu, Dongzi
Gillies, John A.
Etyemezian, Vicken
Nikolich, George
Shaw, William J.
TI Evaluation of the surface roughness effect on suspended particle
deposition near unpaved roads
SO ATMOSPHERIC ENVIRONMENT
LA English
DT Article
DE Atmospheric deposition; Fugitive dust; Near-source deposition; Road
dust; PM10
ID GENERATED FUGITIVE DUST; ATMOSPHERIC-TURBULENCE; PARTICULATE MATTER;
CHANNEL FLOW; DISPERSION; MODEL; VEGETATION; EMISSIONS
AB The downwind transport and deposition of suspended dust raised by a vehicle driving on unpaved roads was studied for four differently vegetated surfaces in the USA states of Kansas and Washington, and one barren surface in Nevada. A 10 m high tower adjacent to the source (10 m downwind) and an array of multi-channel optical particle counters at three positions downwind of the source measured the flux of particles and the particle size distribution in the advecting dust plumes in the horizontal and vertical directions. Aerodynamic parameters such as friction velocity (u*) and surface roughness length (z(0)) were calculated from wind speed measurements made on the tower. Particle number concentration, PM10 mass exhibited an exponential decay along the direction of transport. Coarse particles accounted for approximate to 95% of the PM10 mass, at least to a downwind distance of 200 m from the source. PM10 removed by deposition was found to increase with increasing particle size and increasing surface roughness under similar moderate wind speed conditions. The surface of dense, long grass (1.2 m high and complete surface cover) had the greatest reduction of PM10 among the five surfaces tested due to deposition induced by turbulence effects created by the rougher surface and by enhanced particle impaction/interception effects to the grass blades. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Zhu, Dongzi; Gillies, John A.] Desert Res Inst, Reno, NV 89512 USA.
[Etyemezian, Vicken; Nikolich, George] Desert Res Inst, Las Vegas, NV 89119 USA.
[Shaw, William J.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Zhu, DZ (reprint author), Desert Res Inst, 2215 Raggio Pkwy, Reno, NV 89512 USA.
EM zhu@dri.edu
OI Shaw, William/0000-0002-9979-1089
FU Strategic Environmental Research and Development Program [RC-1729]
FX This work was sponsored by the Strategic Environmental Research and
Development Program (Project RC-1729). Many thanks to those who
participated in the field work from the Pacific Northwest National
Laboratory, Richland WA. We would also like to thank U.S. Army, Ft.
Riley, KS for their logistical support during the field measurement
campaign there.
NR 35
TC 0
Z9 0
U1 7
U2 14
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1352-2310
EI 1873-2844
J9 ATMOS ENVIRON
JI Atmos. Environ.
PD DEC
PY 2015
VL 122
BP 541
EP 551
DI 10.1016/j.atmosenv.2015.10.009
PG 11
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA CZ9JJ
UT WOS:000367413600056
ER
PT J
AU Christov, IC
AF Christov, Ivan C.
TI Comment on "The velocity field due to an oscillating plate in an
Oldroyd-B fluid" by CC Hopkins and JR de Bruyn [Can. J. Phys. 92, 533
(2014)]
SO CANADIAN JOURNAL OF PHYSICS
LA English
DT Editorial Material
DE non-Newtonian fluid; start-up problem; continuum mechanics; Laplace
transform; differential equations
ID UNSTEADY UNIDIRECTIONAL FLOWS; STARTING SOLUTIONS; 2ND-GRADE FLUID
AB We correct certain errors and ambiguities in the recent pedagogical article by Hopkins and de Bruyn (Can. J. Phys. 92, 533 (2014). doi:10.1139/cjp-2013-0334). The early-time asymptotics of the solution to the transient version of Stokes' second problem for an Oldroyd-B fluid in a half-space is presented, as Appendix A, to complement the late-time asymptotics given by Hopkins and de Bruyn.
C1 [Christov, Ivan C.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Christov, Ivan C.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Christov, IC (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA.
EM christov@alum.mit.edu
RI Christov, Ivan/B-9418-2008
OI Christov, Ivan/0000-0001-8531-0531
NR 15
TC 0
Z9 0
U1 0
U2 3
PU CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
PI OTTAWA
PA 65 AURIGA DR, SUITE 203, OTTAWA, ON K2E 7W6, CANADA
SN 0008-4204
EI 1208-6045
J9 CAN J PHYS
JI Can. J. Phys.
PD DEC
PY 2015
VL 93
IS 12
BP 1651
EP 1652
DI 10.1139/cjp-2015-0374
PG 2
WC Physics, Multidisciplinary
SC Physics
GA DA2GQ
UT WOS:000367613700032
ER
PT J
AU Tao, SX
Theulings, AMMG
Prodanovic, V
Smedley, J
van der Graaf, H
AF Tao, Shu Xia
Theulings, Anne M. M. G.
Prodanovic, Violeta
Smedley, John
van der Graaf, Harry
TI Optical Properties of Silicon-Rich Silicon Nitride (SixNyHz) from First
Principles
SO COMPUTATION
LA English
DT Article
DE DFT simulation; optical property; electron loss spectrum; silicon rich
silicon nitride; secondary electron emission
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; ELECTRON-AFFINITY;
BASIS-SET; BETA-SI3N4; DFT
AB The real and imaginary parts of the complex refractive index of SixNyHz have been calculated from first principles. Optical spectra for reflectivity, absorption coefficient, energy-loss function (ELF), and refractive index were obtained. The results for Si3N4 are in agreement with the available theoretical and experimental results. To understand the electron energy loss mechanism in Si-rich silicon nitride, the influence of the Si/N ratio, the positions of the access Si atoms, and H in and on the surface of the ELF have been investigated. It has been found that all defects, such as dangling bonds in the bulk and surfaces, increase the intensity of the ELF in the low energy range (below 10 eV). H in the bulk and on the surface has a healing effect, which can reduce the intensity of the loss peaks by saturating the dangling bonds. Electronic structure analysis has confirmed the origin of the changes in the ELF. It has demonstrated that the changes in ELF are not only affected by the composition but also by the microstructures of the materials. The results can be used to tailor the optical properties, in this case the ELF of Si-rich Si3N4, which is essential for secondary electron emission applications.
C1 [Tao, Shu Xia; Theulings, Anne M. M. G.; Prodanovic, Violeta; van der Graaf, Harry] Natl Inst Subat Phys, NL-1098 XG Amsterdam, Netherlands.
[Tao, Shu Xia; Theulings, Anne M. M. G.; Prodanovic, Violeta; van der Graaf, Harry] Delft Univ Technol TNW, Fac Sci Appl, Charged Particle Opt, NL-2629 JB Delft, Netherlands.
[Smedley, John] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Tao, SX (reprint author), Natl Inst Subat Phys, Nikhef Sci Pk 105, NL-1098 XG Amsterdam, Netherlands.
EM sxtao@nikhef.nl; ammgt@nikhef.nl; V.Prodanovic@tudelft.nl;
smedley@bnl.gov; vdgraaf@nikhef.nl
NR 32
TC 2
Z9 2
U1 4
U2 8
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 2079-3197
J9 COMPUTATION
JI Computation
PD DEC
PY 2015
VL 3
IS 4
BP 657
EP 669
DI 10.3390/computation3040657
PG 13
WC Mathematics, Interdisciplinary Applications
SC Mathematics
GA DA2DK
UT WOS:000367605300009
ER
PT J
AU Conte, TM
Track, E
DeBenedictis, E
AF Conte, Thomas M.
Track, Elie
DeBenedictis, Erik
TI Rebooting Computing: New Strategies for Technology Scaling
SO COMPUTER
LA English
DT Editorial Material
C1 [Conte, Thomas M.] Georgia Tech, Sch Comp Sci Engn, Atlanta, GA 30332 USA.
[Conte, Thomas M.] Georgia Tech, Sch Elect & Comp Engn, Atlanta, GA USA.
[Track, Elie] nVizix, Stamford, CT USA.
[DeBenedictis, Erik] Sandia Natl Labs, Nonconvent Comp Technol Dept, Livermore, CA 94550 USA.
RP Conte, TM (reprint author), Georgia Tech, Sch Comp Sci Engn, Atlanta, GA 30332 USA.
EM conte@gatech.edu; elie.track@nvizix.com; epdeben@sandia.gov
NR 0
TC 1
Z9 1
U1 0
U2 0
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 0018-9162
EI 1558-0814
J9 COMPUTER
JI Computer
PD DEC
PY 2015
VL 48
IS 12
BP 10
EP 13
PG 4
WC Computer Science, Hardware & Architecture; Computer Science, Software
Engineering
SC Computer Science
GA DA3IC
UT WOS:000367689400003
ER
PT J
AU Shalf, JM
Leland, R
AF Shalf, John M.
Leland, Robert
TI Computing beyond Moore's Law
SO COMPUTER
LA English
DT Article
ID CARBON NANOTUBES; ELECTRONICS
C1 [Shalf, John M.] Lawrence Berkeley Natl Lab, Natl Energy Res Supercomp Ctr, Berkeley, CA 94309 USA.
[Shalf, John M.] Lawrence Berkeley Natl Lab, Dept Comp Sci, Berkeley, CA USA.
[Leland, Robert] Sandia Natl Labs, Sci & Technol, Livermore, CA 94550 USA.
RP Shalf, JM (reprint author), Lawrence Berkeley Natl Lab, Natl Energy Res Supercomp Ctr, Berkeley, CA 94309 USA.
EM jshalf@lbl.gov; leland@sandia.gov
NR 17
TC 5
Z9 5
U1 4
U2 31
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 0018-9162
EI 1558-0814
J9 COMPUTER
JI Computer
PD DEC
PY 2015
VL 48
IS 12
BP 14
EP 23
PG 10
WC Computer Science, Hardware & Architecture; Computer Science, Software
Engineering
SC Computer Science
GA DA3IC
UT WOS:000367689400004
ER
PT J
AU Fleetwood, D
Brown, D
Girard, S
Gouker, P
Gerardin, S
Quinn, H
Barnaby, H
AF Fleetwood, Dan
Brown, Dennis
Girard, Sylvain
Gouker, Pascale
Gerardin, Simone
Quinn, Heather
Barnaby, Hugh
TI 2015 Special NSREC Issue of the IEEE TRANSACTIONS ON NUCLEAR SCIENCE
Comments by the Editors
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Editorial Material
C1 [Fleetwood, Dan] Vanderbilt Univ, Nashville, TN 37235 USA.
[Brown, Dennis] IEEE NPSS, Padua, Italy.
[Girard, Sylvain] Univ St Etienne, St Etienne, France.
[Gouker, Pascale] MIT Lincoln Lab, Lexington, MA USA.
[Gerardin, Simone] Univ Padua, I-35100 Padua, Italy.
[Quinn, Heather] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Barnaby, Hugh] Arizona State Univ, Tempe, AZ 85287 USA.
RP Fleetwood, D (reprint author), Vanderbilt Univ, Nashville, TN 37235 USA.
NR 0
TC 0
Z9 0
U1 4
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2378
EP 2378
DI 10.1109/TNS.2015.2502479
PN 1
PG 1
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600002
ER
PT J
AU Wang, L
Zhang, EX
Schrimpf, RD
Fleetwood, DM
Duan, GX
Hachtel, JA
Zhang, CX
Reed, RA
Samsel, IK
Alles, ML
Witters, L
Collaert, N
Linten, D
Mitard, J
Chisholm, MF
Pantelides, ST
Galloway, KF
AF Wang, Liang
Zhang, En Xia
Schrimpf, Ronald D.
Fleetwood, Daniel M.
Duan, Guo Xing
Hachtel, Jordan A.
Zhang, Cher Xuan
Reed, Robert A.
Samsel, Isaak K.
Alles, Michael L.
Witters, Liesbeth
Collaert, Nadine
Linten, Dimitri
Mitard, Jerome
Chisholm, Matthew F.
Pantelides, Sokrates T.
Galloway, Kenneth F.
TI Total Ionizing Dose Effects on Ge Channel pFETs with Raised Si0.55Ge0.45
Source/Drain
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Ge pFET; negative bias temperature instability (NBTI); radiation-induced
leakage; threshold-voltage shift; total ionizing dose (TID);
transconductance degradation
ID BIAS TEMPERATURE INSTABILITY; NBTI RELIABILITY; MOS DEVICES; PMOSFETS;
STACK; DEPENDENCE; RADIATION; SIGE
AB The total ionizing dose response of Ge channel pFETs with raised Si0.55Ge0.45 source/drain is investigated under different radiation bias conditions. Threshold-voltage shifts and transconductance degradation are noticeable only for negative-bias (ON state) irradiation, and are mainly due to negative bias-temperature instability (NBTI). Nonmonotonic leakage changes during irradiation are observed, which are attributed to the competition of radiation-induced field transistor leakage and S/D junction leakage.
C1 [Wang, Liang; Zhang, En Xia; Schrimpf, Ronald D.; Fleetwood, Daniel M.; Duan, Guo Xing; Zhang, Cher Xuan; Reed, Robert A.; Samsel, Isaak K.; Alles, Michael L.; Galloway, Kenneth F.] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA.
[Hachtel, Jordan A.; Pantelides, Sokrates T.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
[Witters, Liesbeth; Collaert, Nadine; Linten, Dimitri; Mitard, Jerome] IMEC, B-3001 Leuven, Belgium.
[Chisholm, Matthew F.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Wang, L (reprint author), Beijing Microelect Technol Inst, Beijing 100076, Peoples R China.
EM wangliang150200@163.com; enxia.zhang@vanderbilt.edu
RI Hachtel, Jordan/R-1263-2016
OI Hachtel, Jordan/0000-0002-9728-0920
FU Air Force Office of Scientific Research; Air Force Research Laboratory
through its Hi-REV program; Defense Threat Reduction Agency; U.S.
Department of Energy, Basic Energy Sciences, Materials Science and
Engineering Division
FX This work was supported in part by the Air Force Office of Scientific
Research, by the Air Force Research Laboratory through its Hi-REV
program and by the Defense Threat Reduction Agency through its basic
research program. Work at ORNL was supported by the U.S. Department of
Energy, Basic Energy Sciences, Materials Science and Engineering
Division.
NR 19
TC 1
Z9 1
U1 2
U2 12
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2412
EP 2416
DI 10.1109/TNS.2015.2489019
PN 1
PG 5
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600007
ER
PT J
AU Dodds, NA
Martinez, MJ
Dodd, PE
Shaneyfelt, MR
Sexton, FW
Black, JD
Lee, DS
Swanson, SE
Bhuva, BL
Warren, KM
Reed, RA
Trippe, J
Sierawski, BD
Weller, RA
Mahatme, N
Gaspard, NJ
Assis, T
Austin, R
Weeden-Wright, SL
Massengill, LW
Swift, G
Wirthlin, M
Cannon, M
Liu, R
Chen, L
Kelly, AT
Marshall, PW
Trinczek, M
Blackmore, EW
Wen, SJ
Wong, R
Narasimham, B
Pellish, JA
Puchner, H
AF Dodds, N. A.
Martinez, M. J.
Dodd, P. E.
Shaneyfelt, M. R.
Sexton, F. W.
Black, J. D.
Lee, D. S.
Swanson, S. E.
Bhuva, B. L.
Warren, K. M.
Reed, R. A.
Trippe, J.
Sierawski, B. D.
Weller, R. A.
Mahatme, N.
Gaspard, N. J.
Assis, T.
Austin, R.
Weeden-Wright, S. L.
Massengill, L. W.
Swift, G.
Wirthlin, M.
Cannon, M.
Liu, R.
Chen, L.
Kelly, A. T.
Marshall, P. W.
Trinczek, M.
Blackmore, E. W.
Wen, S. -J.
Wong, R.
Narasimham, B.
Pellish, J. A.
Puchner, H.
TI The Contribution of Low-Energy Protons to the Total On-Orbit SEU Rate
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Angular effects; error rate prediction; proton direct ionization;
secondary protons; single-event effects (SEEs)
ID SINGLE-EVENT-UPSET; NM SOI SRAM; HARDNESS ASSURANCE; ION ENERGY; IMPACT;
PREDICTIONS; CODE
AB Low- and high-energy proton experimental data and error rate predictions are presented for many bulk Si and SOI circuits from the 20-90 nm technology nodes to quantify how much low-energy protons (LEPs) can contribute to the total on-orbit single-event upset (SEU) rate. Every effort was made to predict LEP error rates that are conservatively high; even secondary protons generated in the spacecraft shielding have been included in the analysis. Across all the environments and circuits investigated, and when operating within 10% of the nominal operating voltage, LEPs were found to increase the total SEU rate to up to 4.3 times as high as it would have been in the absence of LEPs. Therefore, the best approach to account for LEP effects may be to calculate the total error rate from high-energy protons and heavy ions, and then multiply it by a safety margin of 5. If that error rate can be tolerated then our findings suggest that it is justified to waive LEP tests in certain situations. Trends were observed in the LEP angular responses of the circuits tested. Grazing angles were the worst case for the SOI circuits, whereas the worst-case angle was at or near normal incidence for the bulk circuits.
C1 [Dodds, N. A.; Martinez, M. J.; Dodd, P. E.; Shaneyfelt, M. R.; Sexton, F. W.; Black, J. D.; Lee, D. S.; Swanson, S. E.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Bhuva, B. L.; Warren, K. M.; Reed, R. A.; Trippe, J.; Sierawski, B. D.; Weller, R. A.; Mahatme, N.; Gaspard, N. J.; Assis, T.; Austin, R.; Weeden-Wright, S. L.; Massengill, L. W.] Vanderbilt Univ, Nashville, TN 37235 USA.
[Swift, G.] Swift Engn & Radiat Serv, San Jose, CA 95124 USA.
[Wirthlin, M.; Cannon, M.] Brigham Young Univ, Provo, UT 84602 USA.
[Liu, R.; Chen, L.] Univ Saskatchewan, Saskatoon, SK S7N 5A2, Canada.
[Kelly, A. T.] BAE Syst, Manassas, VA 20110 USA.
[Marshall, P. W.] US Naval Res Lab, Brookneal, VA 24528 USA.
[Trinczek, M.; Blackmore, E. W.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Wen, S. -J.; Wong, R.] Cisco Syst, San Jose, CA 95134 USA.
[Narasimham, B.] Broadcom Corp, Irvine, CA 92617 USA.
[Pellish, J. A.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Puchner, H.] Cypress Semicond Inc, San Jose, CA 95134 USA.
RP Dodds, NA (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
EM nadodds@sandia.gov
FU TRIUMF through the National Research Council of Canada; Laboratory
Directed Research and Development program at Sandia National
Laboratories; U.S. Department of Energy [DE-AC04-94AL85000]
FX This work was supported in part by TRIUMF, which receives funding via a
contribution agreement through the National Research Council of Canada,
and by the Laboratory Directed Research and Development program at
Sandia National Laboratories, a multiprogram laboratory operated by
Sandia Corporation, a Lockheed Martin Company, for the U.S. Department
of Energy, under contract DE-AC04-94AL85000. BAE Systems content
approved for public release under ES-ISR-062515-0457.
NR 34
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U1 1
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2440
EP 2451
DI 10.1109/TNS.2015.2486763
PN 1
PG 12
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600011
ER
PT J
AU Khachatrian, A
Roche, NJH
Dodds, NA
McMorrow, D
Warner, JH
Buchner, SP
Reed, RA
AF Khachatrian, Ani
Roche, Nicolas J-H.
Dodds, Nathaniel A.
McMorrow, Dale
Warner, Jeffrey H.
Buchner, Stephen P.
Reed, Robert A.
TI The Impact of Metal Line Reflections on Through-Wafer TPA SEE Testing
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Charge generation; charge-collection enhancement; etalon effect; laser
testing; multiple reflections; reflected laser light intensity; TPA;
transmitted laser intensity; two-photon absorption
ID 2-PHOTON ABSORPTION; CARRIER GENERATION; SIMULATION; SILICON
AB Charge-collection experiments and simulations designed to quantify the effects of reflections from metallization during through-wafer TPA testing are presented. The results reveal a strong dependence on metal line width and metal line position inside the SiO2 overlayer. The charge-collection enhancement is largest for the widest metal lines and the metal lines closest to the Si/SiO2 interface. The charge-collection enhancement is also dependent on incident laser pulse energy, an effect that is a consequence of higher-order optical nonlinearities induced by the ultrashort optical pulses. However, for the lines further away from the Si/SiO2 interface, variations in laser pulse energies affect the charge-collection enhancement to a lesser degree. Z-scan measurements reveal that the peak charge collection occurs when the axial position of the laser focal point is inside the Si substrate. There is a downward trend in peak collected-charge enhancement with the increase in laser pulse energies for the metal lines further away from the Si/SiO2 interface. Metallization enhances the collected charge by same amount regardless of the applied bias voltage. For thinner metal lines and laser pulse energies lower than 1 nJ, the collected charge enhancement due to metallization is negligible.
C1 [Khachatrian, Ani] Sotera Def Solut, Herndon, VA 20171 USA.
[Khachatrian, Ani; Roche, Nicolas J-H.; McMorrow, Dale; Warner, Jeffrey H.; Buchner, Stephen P.] US Naval Res Lab, Washington, DC 20375 USA.
[Roche, Nicolas J-H.] George Washington Univ, Washington, DC 20052 USA.
[Dodds, Nathaniel A.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Reed, Robert A.] Vanderbilt Univ, Nashville, TN 37235 USA.
RP Khachatrian, A (reprint author), Sotera Def Solut, Herndon, VA 20171 USA.
EM ani.khachatrian.ctr@nrl.navy.mil; nicolas.roche.ctr.fr@nrl.navy.mil;
nadodds@sandia.gov; robert.reed@vanderbilt.edu
FU DTRA Radiation Hardened Microelectronics Program; Office of Naval
Research; U.S. Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX This work was supported by the DTRA Radiation Hardened Microelectronics
Program and the Office of Naval Research. Sandia National Laboratories
is a multi-program laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the U.S. Department of Energy's National Nuclear Security
Administration under contract DE-AC04-94AL85000.
NR 10
TC 0
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U1 1
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2452
EP 2457
DI 10.1109/TNS.2015.2500731
PN 1
PG 6
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600012
ER
PT J
AU Cardoza, D
LaLumondiere, SD
Wells, NP
Tockstein, MA
Brewe, DL
Lotshaw, WT
Moss, SC
AF Cardoza, David
LaLumondiere, Stephen D.
Wells, Nathan P.
Tockstein, Michael A.
Brewe, Dale L.
Lotshaw, William T.
Moss, Steven C.
TI Investigating Pulsed X-ray Induced SEE in Analog Microelectronic Devices
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Integrated circuit reliability; radiation hardening; semiconductor
device reliability; single event effects; single event transients;
synchrotron radiation; x-ray applications
ID SINGLE-EVENT TRANSIENTS; LM124 OPERATIONAL-AMPLIFIER; RESOLVED
SYNCHROTRON EXPERIMENTS; 2-PHOTON ABSORPTION; LINEAR CIRCUITS; ION
MICROBEAM; SHUTTER; LIGHT
AB We investigate analog single event transient (ASET) generation in an LM124 operational amplifier using focused pulsed x-rays and 800 nm femtosecond laser pulses. We report improvements that have been made to the pulsed x-ray experimental apparatus which include normal incidence geometry and a high speed x-ray chopper that allows us to reduce the pulse repetition frequency of the synchrotron derived x-ray pulse train. The addition of the chopper allows us to measure ASETs that have long relaxation times. We show that ASETs can be generated through metallization on the LM124, and that for equivalent pulse energy incident on the part, the x-ray response from areas covered by metal (and inaccessible to the laser) are different than the x-ray response from areas with no metallization, i.e. "metal-free". We use the laser pulses to generate ASETs at the same metal-free locations of x-ray induced ASETs. The shapes of the ASETs generated by the two methods are compared. We use the differences seen from the two generation methods to estimate the charge generation/collection produced by the pulsed x-rays and then estimate what LET this would correspond to for heavy ions. This work shows that pulsed x-rays can be used to characterize analog devices for single event effects.
C1 [Cardoza, David; LaLumondiere, Stephen D.; Wells, Nathan P.; Lotshaw, William T.] Aerosp Corp, Photon Technol Dept, Elect & Photon Lab, Phys Sci Labs, Los Angeles, CA 90009 USA.
[Tockstein, Michael A.; Moss, Steven C.] Aerosp Corp, Microelect Technol Dept, Elect & Photon Lab, Phys Sci Labs, Los Angeles, CA 90009 USA.
[Brewe, Dale L.] Argonne Natl Lab, Adv Photon Source, PNC XSD Facil Sect 20, Argonne, IL 60439 USA.
RP Cardoza, D (reprint author), Aerosp Corp, Photon Technol Dept, Elect & Photon Lab, Phys Sci Labs, Los Angeles, CA 90009 USA.
EM David.M.Cardoza@aero.org
FU Independent Research and Development Program at The Aerospace
Corporation; US Department of Energy-Basic Energy Sciences; Canadian
Light Source; University of Washington; Advanced Photon Source; U.S. DOE
[DE-AC02-06CH11357]
FX This work was supported in part by the Independent Research and
Development Program at The Aerospace Corporation. PNC/XSD facilities at
the Advanced Photon Source, and research at these facilities, are
supported by the US Department of Energy-Basic Energy Sciences, the
Canadian Light Source and its funding partners, the University of
Washington and the Advanced Photon Source. Use of the Advanced Photon
Source, an Office of Science User Facility operated for the U.S.
Department of Energy (DOE) Office of Science by Argonne National
Laboratory, was supported by the U.S. DOE under Contract No.
DE-AC02-06CH11357.
NR 36
TC 1
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U1 1
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2458
EP 2467
DI 10.1109/TNS.2015.2498100
PN 1
PG 10
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600013
ER
PT J
AU Quinn, H
Baker, Z
Fairbanks, T
Tripp, JL
Duran, G
AF Quinn, Heather
Baker, Zachary
Fairbanks, Tom
Tripp, Justin L.
Duran, George
TI Software Resilience and the Effectiveness of Software Mitigation in
Microcontrollers
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Soft errors; software; software fault diagnosis; software fault
tolerance
ID CONTROL-FLOW CHECKING; FAULT-TOLERANCE
AB Commercially available microprocessors could be useful to the space community for noncritical computations. There are many possible components that are smaller, lower-power, and less expensive than traditional radiation-hardened microprocessors. Many commercial microprocessors have issues with single-event effects (SEEs), such as single-event upsets (SEUs) and single-event transients (SETs), that can cause the microprocessor to calculate an incorrect result or crash. In this paper we present the Trikaya technique for masking SEUs and SETs through software mitigation techniques. Test results show that this technique can be very effective at masking errors, making it possible to fly these microprocessors for a variety of missions.
C1 [Quinn, Heather; Baker, Zachary; Fairbanks, Tom; Tripp, Justin L.; Duran, George] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Quinn, H (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM hquinn@lanl.gov
NR 20
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U1 2
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PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2532
EP 2538
DI 10.1109/TNS.2015.2496342
PN 1
PG 7
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600023
ER
PT J
AU Quinn, H
Robinson, WH
Rech, P
Aguirre, M
Barnard, A
Desogus, M
Entrena, L
Garcia-Valderas, M
Guertin, SM
Kaeli, D
Kastensmidt, FL
Kiddie, BT
Sanchez-Clemente, A
Reorda, MS
Sterpone, L
Wirthlin, M
AF Quinn, Heather
Robinson, William H.
Rech, Paolo
Aguirre, Miguel
Barnard, Arno
Desogus, Marco
Entrena, Luis
Garcia-Valderas, Mario
Guertin, Steven M.
Kaeli, David
Kastensmidt, Fernanda Lima
Kiddie, Bradley T.
Sanchez-Clemente, Antonio
Reorda, Matteo Sonza
Sterpone, Luca
Wirthlin, Michael
TI Using Benchmarks for Radiation Testing of Microprocessors and FPGAs
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Field-programmable gate arrays (FPGAs); soft error rates; soft errors;
software fault tolerance
ID FAULT-TOLERANCE; SEU; SYSTEMS; DESIGN; LEVEL; CMOS; TOOL
AB Performance benchmarks have been used over the years to compare different systems. These benchmarks can be useful for researchers trying to determine how changes to the technology, architecture, or compiler affect the system's performance. No such standard exists for systems deployed into high radiation environments, making it difficult to assess whether changes in the fabrication process, circuitry, architecture, or software affect reliability or radiation sensitivity. In this paper, we propose a benchmark suite for high-reliability systems that is designed for field-programmable gate arrays and microprocessors. We describe the development process and report neutron test data for the hardware and software benchmarks.
C1 [Quinn, Heather] Los Alamos Natl Lab, ISR Space Data Syst 3, Los Alamos, NM 87545 USA.
[Robinson, William H.; Kiddie, Bradley T.] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA.
[Rech, Paolo; Kastensmidt, Fernanda Lima] Univ Fed Rio Grande do Sul, Inst Informat, BR-91501970 Porto Alegre, RS, Brazil.
[Barnard, Arno] Univ Stellenbosch, ZA-7602 Stellenbosch, South Africa.
[Aguirre, Miguel] Univ Seville, Seville 41004, Spain.
[Desogus, Marco; Reorda, Matteo Sonza; Sterpone, Luca] Politecn Torino, I-10129 Turin, TO, Italy.
[Entrena, Luis; Garcia-Valderas, Mario; Sanchez-Clemente, Antonio] Univ Carlos III Madrid, Madrid 28911, Spain.
[Guertin, Steven M.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Kiddie, Bradley T.] Northeastern Univ, Elect & Comp Engn, Boston, MA 02115 USA.
[Wirthlin, Michael] Brigham Young Univ, Dept Elect & Comp Engn, NSF Ctr High Performance Reconfigurable Comp CHRE, Provo, UT 84602 USA.
RP Quinn, H (reprint author), Los Alamos Natl Lab, ISR Space Data Syst 3, POB 1663, Los Alamos, NM 87545 USA.
EM hquinn@lanl.gov
OI Entrena, Luis/0000-0001-6021-165X
NR 38
TC 4
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U1 1
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2547
EP 2554
DI 10.1109/TNS.2015.2498313
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600025
ER
PT J
AU Lee, DS
Swift, GM
Wirthlin, MJ
Draper, J
AF Lee, David S.
Swift, Gary M.
Wirthlin, Michael J.
Draper, Jeffrey
TI Addressing Angular Single-Event Effects in the Estimation of On-Orbit
Error Rates
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Multiple bit upset; multiple cell upset; radiation effects; single event
effects
ID MULTIPLE-BIT UPSETS; CMOS TECHNOLOGY; MULTIBIT UPSETS; SRAMS;
MICROELECTRONICS
AB This study describes complications introduced by angular direct ionization events on space error rate predictions. In particular, prevalence of multiple-cell upsets and a breakdown in the application of effective linear energy transfer in modern-scale devices can skew error rates approximated from currently available estimation models. This paper highlights the importance of angular testing and proposes a methodology to extend existing error estimation tools to properly consider angular strikes in modern-scale devices. These techniques are illustrated with test data provided from a modern 28 nm SRAM-based device.
C1 [Lee, David S.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Swift, Gary M.] Swift Engn & Radiat Serv LLC, San Jose, CA 95124 USA.
[Wirthlin, Michael J.] Brigham Young Univ, Ctr High Performance Reconfigurable Comp, Dept Elect & Comp Engn, Provo, UT 84602 USA.
[Draper, Jeffrey] Univ So Calif, Inst Informat Sci, Ming Hsieh Dept Elect Engn, Marina Del Rey, CA 90292 USA.
RP Lee, DS (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
EM dslee@sandia.gov; gary@swiftradiation.com; wirthlin@byu.edu;
draper@isi.edu
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]; I/UCRC Program of the National Science Foundation
[1265957]
FX This work was supported in part by the Laboratory Directed Research and
Development Program at Sandia National Laboratories, a multi-program
laboratory managed and operated by Sandia Corporation, a wholly owned
subsidiary of Lockheed Martin Corporation, for the U.S. Department of
Energy's National Nuclear Security Administration under Contract
DE-AC04-94AL85000 and in part by the I/UCRC Program of the National
Science Foundation under Grant 1265957. Unclassified, unlimited release
under SAND2015-5557C. All trademarks, service marks, and trade names are
the property of their respective owners.
NR 18
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U1 1
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2563
EP 2569
DI 10.1109/TNS.2015.2498641
PN 1
PG 7
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600027
ER
PT J
AU Fleetwood, ZE
Lourenco, NE
Ildefonso, A
England, TD
Song, I
Schmid, RL
Cardoso, AS
Jung, S
Roche, NJH
Khachatrian, A
Buchner, SP
McMorrow, D
Warner, J
Paki, P
Cressler, JD
AF Fleetwood, Zachary E.
Lourenco, Nelson E.
Ildefonso, Adrian
England, Troy D.
Song, Ickhyun
Schmid, Robert L.
Cardoso, Adilson S.
Jung, Seungwoo
Roche, Nicolas J-H.
Khachatrian, Ani
Buchner, Steven P.
McMorrow, Dale
Warner, Jeffrey
Paki, Pauline
Cressler, John D.
TI An Investigation of the SET Response of Devices and Differential Pairs
in a 32-nm SOI CMOS Technology
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Active load (AL); body-connected (BC); differential pair (diff. pair);
floating body (FB); resistive load (RL); silicon-on-insulator (SOI);
single event effect (SEE)
ID 2-PHOTON ABSORPTION; CARRIER GENERATION; SIMULATION
AB The single event effect (SEE) response of devices and differential pairs in a 32-nm SOI CMOS technology is explored using laser-induced carrier injection and TCAD simulations. Both nFETs and pFETs in this technology exhibit similar sensitive area to laser-induced SEE and are strongly dependent on the drain bias condition. TCAD simulations were conducted in order to confirm results and utilize a 3-D mixed-mode simulation approach to more accurately model testing conditions. The differential pair (diff. pair) circuit SEE response extends the discussion to include the use of these devices in a core analog/RF circuit block. The analysis includes the use of floating body (FB) and body-connected (BC) devices. Body-connected FETs tend to exhibit a transient response that is much shorter in duration when compared directly to its floating body counterpart.
C1 [Fleetwood, Zachary E.; Lourenco, Nelson E.; Ildefonso, Adrian; Song, Ickhyun; Cardoso, Adilson S.; Jung, Seungwoo; Cressler, John D.] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
[England, Troy D.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Schmid, Robert L.] Johns Hopkins Univ, Appl Phys Lab, Baltimore, MD 21218 USA.
[Roche, Nicolas J-H.; Khachatrian, Ani; Buchner, Steven P.; McMorrow, Dale; Warner, Jeffrey] US Navy, Res Lab, Washington, DC 20375 USA.
[Paki, Pauline] Def Threat Reduct Agcy DTRA, Ft Belvoir, VA 22060 USA.
RP Fleetwood, ZE (reprint author), Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
EM zfleetwood3@gatech.edu; pauline.paki@dtra.mil; cressler@ece.gatech.edu
FU DTRA; NRL; IBM
FX The authors are grateful to DTRA, NRL, and IBM for support and
insightful conversations.
NR 11
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U1 1
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2643
EP 2649
DI 10.1109/TNS.2015.2499298
PN 1
PG 7
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600038
ER
PT J
AU Trippe, JM
Reed, RA
Austin, RA
Sierawski, BD
Weller, RA
Funkhouser, ED
King, MP
Narasimham, B
Bartz, B
Baumann, R
Labello, J
Nichols, J
Schrimpf, RD
Weeden-Wright, SL
AF Trippe, J. M.
Reed, R. A.
Austin, R. A.
Sierawski, B. D.
Weller, R. A.
Funkhouser, E. D.
King, M. P.
Narasimham, B.
Bartz, B.
Baumann, R.
Labello, J.
Nichols, J.
Schrimpf, R. D.
Weeden-Wright, S. L.
TI Electron-Induced Single Event Upsets in 28 nm and 45 nm Bulk SRAMs
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Energetic electron; single-event effects (SEEs); single-event rates;
single-event upset (SEU); static random access memory (SRAM)
ID SIMULATION; MEMORY; CODE; SEU
AB We present experimental evidence of single electron-induced upsets in commercial 28 nm and 45 nm CMOS SRAMs from a monoenergetic electron beam. Upsets were observed in both technology nodes when the SRAM was operated in a low power state. The experimental cross section depends strongly on both bias and technology node feature size, consistent with previous work in which SRAMs were irradiated with low energy muons and protons. Accompanying simulations demonstrate that delta-rays produced by the primary electrons are responsible for the observed upsets. Additional simulations predict the on-orbit event rates for various Earth and Jovian environments for a set of sensitive volumes representative of current technology nodes. The electron contribution to the total upset rate for Earth environments is significant for critical charges as high as 0.2 fC. This value is comparable to that of sub-22 nm bulk SRAMs. Similarly, for the Jovian environment, the electron-induced upset rate is larger than the proton-induced upset rate for critical charges as high as 0.3 fC.
C1 [Trippe, J. M.; Reed, R. A.; Austin, R. A.; Sierawski, B. D.; Weller, R. A.; Funkhouser, E. D.; Schrimpf, R. D.; Weeden-Wright, S. L.] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37237 USA.
[King, M. P.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Narasimham, B.; Bartz, B.] Broadcom Corp, Irvine, CA 92617 USA.
[Baumann, R.] Texas Instruments Inc, Dallas, TX 75243 USA.
[Labello, J.; Nichols, J.] Arnold Engn & Dev Complex, Tullahoma, TN USA.
RP Trippe, JM (reprint author), Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37237 USA.
EM james.m.trippe@vanderbilt.edu
FU Defense Threat Reduction Agency Basic Research Program
[HDTRA1-12-1-0025]
FX This work was sponsored in part by the Defense Threat Reduction Agency
Basic Research Program under grant No. HDTRA1-12-1-0025.
NR 21
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U1 1
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PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2709
EP 2716
DI 10.1109/TNS.2015.2496967
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600047
ER
PT J
AU Dodds, NA
Dodd, PE
Shaneyfelt, MR
Sexton, FW
Martinez, MJ
Black, JD
Marshall, PW
Reed, RA
McCurdy, MW
Weller, RA
Pellish, JA
Rodbell, KP
Gordon, MS
AF Dodds, N. A.
Dodd, P. E.
Shaneyfelt, M. R.
Sexton, F. W.
Martinez, M. J.
Black, J. D.
Marshall, P. W.
Reed, R. A.
McCurdy, M. W.
Weller, R. A.
Pellish, J. A.
Rodbell, K. P.
Gordon, M. S.
TI New Insights Gained on Mechanisms of Low-Energy Proton-Induced SEUs by
Minimizing Energy Straggle
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Low-energy protons; proton direct ionization; single-event effects; soft
error rate prediction
ID SINGLE-EVENT-UPSETS; NM SOI SRAM
AB We present low-energy proton single-event upset (SEU) data on a 65 nm SOI SRAM whose substrate has been completely removed. Since the protons only had to penetrate a very thin buried oxide layer, these measurements were affected by far less energy loss, energy straggle, flux attrition, and angular scattering than previous datasets. The minimization of these common sources of experimental interference allows more direct interpretation of the data and deeper insight into SEU mechanisms. The results show a strong angular dependence, demonstrate that energy straggle, flux attrition, and angular scattering affect the measured SEU cross sections, and prove that proton direct ionization is the dominant mechanism for low-energy proton-induced SEUs in these circuits.
C1 [Dodds, N. A.; Dodd, P. E.; Shaneyfelt, M. R.; Sexton, F. W.; Martinez, M. J.; Black, J. D.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Marshall, P. W.] NRL Consultant, Brookneal, VA 24528 USA.
[Reed, R. A.; McCurdy, M. W.; Weller, R. A.] Vanderbilt Univ, Nashville, TN 37203 USA.
[Pellish, J. A.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Rodbell, K. P.; Gordon, M. S.] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA.
RP Dodds, NA (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
EM nadodds@sandia.gov
FU DTRA RHM program
FX The authors would like to thank S. Brown, M. Carts, and A. Boutte for
their assistance with the experiments at NASA Goddard, M. Mendenhall for
his assistance preparing for the experiments at Vanderbilt University,
S. Buchner (Naval Research Laboratory) for his helpful discussions, and
the DTRA RHM program for its support.
NR 21
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U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2822
EP 2829
DI 10.1109/TNS.2015.2488588
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600061
ER
PT J
AU King, MP
Armstrong, AM
Dickerson, JR
Vizkelethy, G
Fleming, RM
Campbell, J
Wampler, WR
Kizilyalli, IC
Bour, DP
Aktas, O
Nie, H
Disney, D
Wierer, J
Allerman, AA
Moseley, MW
Leonard, F
Talin, AA
Kaplar, RJ
AF King, M. P.
Armstrong, A. M.
Dickerson, J. R.
Vizkelethy, G.
Fleming, R. M.
Campbell, J.
Wampler, W. R.
Kizilyalli, I. C.
Bour, D. P.
Aktas, O.
Nie, H.
Disney, D.
Wierer, J.
Allerman, A. A.
Moseley, M. W.
Leonard, F.
Talin, A. A.
Kaplar, R. J.
TI Performance and Breakdown Characteristics of Irradiated Vertical Power
GaN P-i-N Diodes
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Displacement damage; gallium nitride; power devices; power electronics;
reliability; wide-bandgap
ID ALGAN/GAN HEMTS; HIGH-VOLTAGE; SEMICONDUCTORS; DEVICES; RECOMBINATION;
OPTIMIZATION; SPECTROSCOPY; ELECTRONICS; TRANSISTORS; RADIATION
AB Electrical performance and defect characterization of vertical GaN P-i-N diodes before and after irradiation with 2.5 MeV protons and neutrons is investigated. Devices exhibit increase in specific on-resistance following irradiation with protons and neutrons, indicating displacement damage introduces defects into the p-GaN and n(-) drift regions of the device that impact on-state device performance. The breakdown voltage of these devices, initially above 1700 V, is observed to decrease only slightly for particle fluence < 10(13) cm(-2). The unipolar figure of merit for power devices indicates that while the on-resistance and breakdown voltage degrade with irradiation, vertical GaN P-i-Ns remain superior to the performance of the best available, unirradiated silicon devices and on-par with unirradiated modern SiC-based power devices.
C1 [King, M. P.; Armstrong, A. M.; Dickerson, J. R.; Vizkelethy, G.; Fleming, R. M.; Campbell, J.; Wampler, W. R.; Wierer, J.; Allerman, A. A.; Moseley, M. W.; Kaplar, R. J.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Leonard, F.; Talin, A. A.] Sandia Natl Labs, Livermore, CA 94550 USA.
[Kizilyalli, I. C.; Bour, D. P.; Aktas, O.; Nie, H.; Disney, D.] Avogy Inc, San Jose, CA 95134 USA.
RP King, MP (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM mpking@sandia.gov; kizilyalli@ieee.org
RI Wierer, Jonathan/G-1594-2013
OI Wierer, Jonathan/0000-0001-6971-4835
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC0494AL85000]; DOE ARPA-E SWITCHES Program
FX Sandia National Laboratories is a multi-program laboratory managed and
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the U.S. Department of Energy's National Nuclear
Security Administration under contract DE-AC0494AL85000. Avogy
acknowledges partial support from DOE ARPA-E SWITCHES Program (Dr. T.
Heidel, director).
NR 38
TC 4
Z9 4
U1 1
U2 32
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2912
EP 2918
DI 10.1109/TNS.2015.2480071
PN 1
PG 7
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600074
ER
PT J
AU Auden, EC
Pacheco, JL
Bielejec, E
Vizkelethy, G
Abraham, JBS
Doyle, BL
AF Auden, Elizabeth C.
Pacheco, Jose L.
Bielejec, Edward
Vizkelethy, Gyorgy
Abraham, John B. S.
Doyle, Barney L.
TI Sub-Micron Resolution of Localized Ion Beam Induced Charge Reduction in
Silicon Detectors Damaged by Heavy Ions
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Displacement damage; IBIC; ion beam induced charge; silicon detectors
ID RADIATION DETECTORS; COLLECTION; IRRADIATION; MICROSCOPY; PROTON;
PHOTODIODE; MICROBEAM; ELECTRON; IMAGES; IBICC
AB Displacement damage reduces ion beam induced charge (IBIC) through Shockley-Read-Hall recombination. Closely spaced pulses of 200 keV Si++ ions focused in a 40 nm beam spot are used to create damage cascades within 0.25 mu m(2) areas. Damaged areas are detected through contrast in IBIC signals generated with focused ion beams of 200 keV Si++ ions and 60 keV Li+ ions. IBIC signal reduction can be resolved over sub-micron regions of a silicon detector damaged by as few as 1000 heavy ions.
C1 [Auden, Elizabeth C.; Pacheco, Jose L.; Bielejec, Edward; Vizkelethy, Gyorgy; Abraham, John B. S.; Doyle, Barney L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Auden, EC (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM eauden@sandia.gov; jpache@sandia.gov; ebiele@sandia.gov;
gvizke@sandia.gov; jabrah@sandia.gov; bdoyle@sandia.gov
FU Laboratory Directed Research and Development program at Sandia National
Laboratories; U.S. Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX This work was sponsored by the Laboratory Directed Research and
Development program at Sandia National Laboratories, which is a
multi-program laboratory managed and operated by Sandia Corporation, a
wholly owned subsidiary of Lockheed Martin Corporation, for the U.S.
Department of Energy's National Nuclear Security Administration under
contract DE-AC04-94AL85000.
NR 24
TC 0
Z9 0
U1 4
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 2919
EP 2925
DI 10.1109/TNS.2015.2495160
PN 1
PG 7
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600075
ER
PT J
AU Tonfat, J
Kastensmidt, FL
Rech, P
Reis, R
Quinn, HM
AF Tonfat, Jorge
Kastensmidt, Fernanda Lima
Rech, Paolo
Reis, Ricardo
Quinn, Heather M.
TI Analyzing the Effectiveness of a Frame-Level Redundancy Scrubbing
Technique for SRAM-based FPGAs
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Fault tolerance; field programmable gate arrays; radiation effects
ID SOFT ERROR; RECOVERY
AB Radiation effects such as soft errors are the major threat to the reliability of SRAM-based FPGAs. This work analyzes the effectiveness in correcting soft errors of a novel scrubbing technique using internal frame redundancy called Frame-level Redundancy Scrubbing (FLR-scrubbing). This correction technique can be implemented in a coarse grain TMR design. The FLR-scrubbing technique was implemented on a mid-size Xilinx Virtex-5 FPGA device used as a case study. The FLR-scrubbing technique was tested under neutron radiation and fault injection. Implementation results demonstrated minimum area and energy consumption overhead when compared to other techniques. The time to repair the fault is also improved by using the Internal Configuration Access Port (ICAP). Neutron radiation test results demonstrated that the proposed technique is suitable for correcting accumulated SEUs and MBUs.
C1 [Tonfat, Jorge; Kastensmidt, Fernanda Lima; Rech, Paolo; Reis, Ricardo] Univ Fed Rio Grande do Sul, PGMICRO, BR-91501970 Porto Alegre, RS, Brazil.
[Quinn, Heather M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Tonfat, J (reprint author), Univ Fed Rio Grande do Sul, PGMICRO, BR-91501970 Porto Alegre, RS, Brazil.
EM jorgetonfat@ieee.org; fglima@inf.ufrgs.br; prech@inf.ufrgs.br;
reis@inf.ufrgs.br; hquinn@lanl.gov
OI Tonfat, Jorge/0000-0001-9346-3079
FU CNPq; FAPERGS; CAPES
FX This work was supported in part by CNPq, FAPERGS and CAPES.
NR 20
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U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 3080
EP 3087
DI 10.1109/TNS.2015.2489601
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600096
ER
PT J
AU Chielle, E
Rodrigues, GS
Kastensmidt, FL
Cuenca-Asensi, S
Tambara, LA
Rech, P
Quinn, H
AF Chielle, Eduardo
Rodrigues, Gennaro S.
Kastensmidt, Fernanda L.
Cuenca-Asensi, Sergio
Tambara, Lucas A.
Rech, Paolo
Quinn, Heather
TI S-SETA: Selective Software-Only Error-Detection Technique Using
Assertions
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 52nd IEEE Nuclear and Space Radiation Effects Conference (NSREC)
CY JUL 13-17, 2015
CL Boston, MA
SP IEEE, IEEE Nucl & Plasma Sci Soc, Radiat Effects Comm
DE Aerospace applications; control-flow; energy constraints; error
detection; fault coverage; fault tolerance; memory overhead; performance
degradation; processors; reliability; soft errors; software-based
techniques
ID PROCESSORS
AB Software-based techniques offer several advantages to increase the reliability of processor-based systems at very low cost, but they cause performance degradation and an increase of the code size. To meet constraints in performance and memory, we propose SETA, a new control-flow software-only technique that uses assertions to detect errors affecting the program flow. SETA is an independent technique, but it was conceived to work together with previously proposed data-flow techniques that aim at reducing performance and memory overheads. Thus, SETA is combined with such data-flow techniques and submitted to a fault injection campaign. Simulation and neutron induced SEE tests show high fault coverage at performance and memory overheads inferior to the state-of-the-art.
C1 [Chielle, Eduardo; Rodrigues, Gennaro S.; Kastensmidt, Fernanda L.; Tambara, Lucas A.; Rech, Paolo] Univ Fed Rio Grande do Sul, PGMICRO, Inst Informat, Porto Alegre, RS, Brazil.
[Cuenca-Asensi, Sergio] Univ Alicante, Comp Technol Dept, E-03080 Alicante, Spain.
[Quinn, Heather] Los Alamos Natl Lab, Space Data Syst Grp, Los Alamos, NM USA.
RP Chielle, E (reprint author), Univ Fed Rio Grande do Sul, PGMICRO, Inst Informat, Porto Alegre, RS, Brazil.
EM echielle@inf.ufrgs.br; gsrodrigues@inf.ufrgs.br; fglima@inf.ufrgs.br;
sergio@dtic.ua.es; latambara@inf.ufrgs.br; prech@inf.ufrgs.br;
hquinn@lanl.gov
FU CNPq; CAPES
FX This work was supported in part by CNPq and CAPES, Brazilian agencies.
NR 26
TC 4
Z9 4
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2015
VL 62
IS 6
BP 3088
EP 3095
DI 10.1109/TNS.2015.2484842
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA DA3WW
UT WOS:000367732600097
ER
PT J
AU Nakano, A
Nakano, J
Seetharaman, S
AF Nakano, Anna
Nakano, Jinichiro
Seetharaman, Seshadri
TI Synthesis of nano-manganese ferrite by an oxalate method and
characterization of its magnetic properties
SO INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
DE Manganese ferrite; Nano-size; Synthesis; Oxalate method
ID X-RAY; NANOPARTICLES; PARTICLES; COPRECIPITATION
AB In this work, nano-sized manganese ferrite (MnFe2O4) was synthesized through the decomposition of the mixed oxalates. The formation of the spinel manganese ferrite was confirmed by X-ray diffraction analysis. The morphology of the ferrite products was studied by scanning electron microscopy. The particle size, which was determined using the Scherrer formula, ranged from 25 to 30 nm. Magnetic properties of the manganese ferrite were analyzed using a vibrating sample magnetometry technique; a narrow hysteresis loop indicated the MnFe2O4 obtained was a soft ferromagnet. Magnetic properties of the manganese ferrite produced were in agreement with those reported in literature for MnFe2O4 nanoparticles prepared by conventional methods, including co-precipitation and mechanochemical processes. By plotting a series of literature data determined by different authors and techniques, a correlation between saturation magnetisation and particle size has been noted regardless of the synthesis methods. In general, the oxalate method seems to be able to produce nano-manganese ferrite in a shorter time (2-3 h) as compared to other conventional techniques reported in literature (up to 54 h).
C1 [Nakano, Anna; Seetharaman, Seshadri] Royal Inst Technol, Stockholm, Sweden.
[Nakano, Anna; Nakano, Jinichiro] US DOE, Natl Energy Technol Lab, Albany, OR 97321 USA.
[Nakano, Jinichiro] AECOM, Albany, OR USA.
RP Nakano, A (reprint author), US DOE, Natl Energy Technol Lab, 1450 Queen Ave SW, Albany, OR 97321 USA.
EM anna.nakano@netl.doe.gov
FU Swedish Foundation for Strategic Environmental Research (MISTRA) [88035]
FX The authors are thankful to the Swedish Foundation for Strategic
Environmental Research (MISTRA) for financial support through the
project Eco-Steel Production (Sub project no.: 88035) administered by
Swedish Steel Producers Association (Jernkontoret). Authors sincerely
acknowledge Dr. L. Belova of the Royal Institute of Technology (KTH) for
her valuable discussions on synthesis of nano-manganese ferrite by the
oxalate method and magnetic properties measurements, Mr. S. Nagar (KTH)
for his help during VSM measurements, and Mr. P. Hedstrom (KTH) for the
SEM analyses.
NR 21
TC 0
Z9 0
U1 1
U2 3
PU CARL HANSER VERLAG
PI MUNICH
PA KOLBERGERSTRASSE 22, POSTFACH 86 04 20, D-81679 MUNICH, GERMANY
SN 1862-5282
EI 2195-8556
J9 INT J MATER RES
JI Int. J. Mater. Res.
PD DEC
PY 2015
VL 106
IS 12
BP 1264
EP 1268
DI 10.3139/146.111304
PG 5
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA DA0QY
UT WOS:000367503400008
ER
PT J
AU Vukovich, M
Turner, KL
Grazia, TE
Mims, T
Beasley, JC
Kilgo, JC
AF Vukovich, Mark
Turner, Kelsey L.
Grazia, Tracy E.
Mims, Thomas
Beasley, James C.
Kilgo, John C.
TI Wintering Golden Eagles on the coastal plain of South Carolina
SO JOURNAL OF FIELD ORNITHOLOGY
LA English
DT Article
DE Aquila chrysaetos; camera trap; carcass; open pine forest; southeast;
wild pig
ID AQUILA-CHRYSAETOS; POPULATION; MODELS; SIZE; LEAD
AB Golden Eagles (Aquila chrysaetos) are rare winter residents in eastern North America, with most found along the Appalachian Mountains and few reported on the coastal plain of the Carolinas. We used remote cameras baited with wild pig (Sus scrofa) and white-tailed deer (Odocoileus virginianus) carcasses to detect, age, and individually identify Golden Eagles on the U.S. Department of Energy's Savannah River Site on the coastal plain of South Carolina. We identified eight individual Golden Eagles during the winters of 2013-2014 and 2014-2015, with one detected during both winters. We detected eagles for 19 and 66 calendar days during the winters of 2013-2014 and 2014-2015, respectively, with two adult eagles detected for 30 and 31 calendar days in 2014-2015. Eagles typically scavenged on carcasses for a few days, left, and then returned when cameras were baited with another carcass, suggesting they had remained in the area. These observations suggest that large tracts of forests on the coastal plain may be important wintering areas for some Golden Eagles and, further, that other areas in the coastal plain of the southeastern United States may also harbor wintering eagles. Identification of wintering areas of Golden Eagles in the east will be an important step in the conservation of this protected species, and camera traps baited with carcasses can be an effective tool for such work.
C1 [Vukovich, Mark; Kilgo, John C.] USDA Forest Serv, Southern Res Stn, New Ellenton, SC 29809 USA.
[Turner, Kelsey L.; Beasley, James C.] Univ Georgia, Savannah River Ecol Lab, Warnell Sch Forestry & Nat Resources, Aiken, SC 29802 USA.
[Grazia, Tracy E.; Mims, Thomas] USDA Forest Serv Savannah River, New Ellenton, SC 29809 USA.
RP Vukovich, M (reprint author), USDA Forest Serv, Southern Res Stn, POB 700, New Ellenton, SC 29809 USA.
EM mvukovich@fs.fed.us
FU United States Department of Energy - Savannah River Operations Office
through the USDA Forest Service - Savannah River [DE-AI09-00SR22188,
DE-FC09-07SR22506]
FX We thank R. Hamilton, D. Hammett, and J. Nance for outstanding work in
the field, and P. Johns for supplying road-killed carcasses. We also
thank C. Sutton and B. Wheeler for assistance with individual
identification and ageing of Golden Eagles, D. Forsythe for facilitating
identification, and T. Katzner and J. Petranka for reviewing the
manuscript. Funding was provided by the United States Department of
Energy - Savannah River Operations Office through the USDA Forest
Service - Savannah River under Interagency Agreement DE-AI09-00SR22188
and Award Number DE-FC09-07SR22506 to the University of Georgia Research
Foundation.
NR 27
TC 0
Z9 0
U1 3
U2 7
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0273-8570
EI 1557-9263
J9 J FIELD ORNITHOL
JI J. Field Ornithol.
PD DEC
PY 2015
VL 86
IS 4
BP 337
EP 344
DI 10.1111/jofo.12127
PG 8
WC Ornithology
SC Zoology
GA DA3AB
UT WOS:000367667200007
ER
PT J
AU Kalyanapu, AJ
Judi, DR
McPherson, TN
Burian, SJ
AF Kalyanapu, A. J.
Judi, D. R.
McPherson, T. N.
Burian, S. J.
TI Annualised risk analysis approach to recommend appropriate level of
flood control: application to Swannanoa river watershed
SO JOURNAL OF FLOOD RISK MANAGEMENT
LA English
DT Article
DE Annualised risk; flood damages; flood modelling; flood proofing; flood
risk; flood risk management; graphics processing unit; Monte Carlo
sampling
ID DAMAGE ESTIMATION; UNCERTAINTY; MODEL
AB This study presents an analysis approach using an existing Monte Carlo (MC) flood risk framework to compare annualised risk reductions from flood control alternatives targeting various recurrence interval events. The annualised risk approach is demonstrated by analysing the relative flood risk mitigation benefits of flood proofing in Swannanoa watershed, North Carolina. Using the MC framework, 54 design flows are sampled from the flow distribution and used to drive a graphics card based two-dimensional flood model. The computed flood depths are used to create flood damage frequency and annualised risk curves. It was hypothesised that flood proofing for a higher probability event would result in a greater relative level of damage reduction for lower cost compared with the traditional use of a 1% annual exceedance flood event. The MC framework was used to test the hypothesis by producing a distribution of annualised risk over various return periods. Confirming the hypothesis, the 12% flood event was found to have the highest annualised risk for the case study in this paper. Simulations were executed to determine the relative costs and benefits of the 12% flood proofing (alternate case) and 1% flood proofing (base case) alternatives. The results showed that the base case reduced the expected annual damage (EAD) by 98.9% compared with the status quo. The alternate case reduced the EAD by 80.4% compared with the status quo. Comparing estimated annual implementation cost with flood damage reductions, annually, for every dollar spent on flood proofing, the 12% design resulted in twice the reduction in flood damages compared with the 1% design. This preliminary study thus confirms the potential of an alternative analysis approach that may be applied for identifying desired flood control level based on flood risk mitigation potential.
C1 [Kalyanapu, A. J.] Tennessee Technol Univ, Dept Civil & Environm Engn, Cookeville, TN 38505 USA.
[Judi, D. R.; McPherson, T. N.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Burian, S. J.] Univ Utah, Dept Civil & Environm Engn, Salt Lake City, UT 84112 USA.
RP Kalyanapu, AJ (reprint author), Tennessee Technol Univ, Dept Civil & Environm Engn, PH 334,1020 Stadium Dr,Box 5015, Cookeville, TN 38505 USA.
EM akalyanapu@tntech.edu
OI Burian, Steven/0000-0003-0523-4968
NR 61
TC 2
Z9 2
U1 3
U2 6
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1753-318X
J9 J FLOOD RISK MANAG
JI J. Flood Risk Manag.
PD DEC
PY 2015
VL 8
IS 4
BP 368
EP 385
DI 10.1111/jfr3.12108
PG 18
WC Environmental Sciences; Water Resources
SC Environmental Sciences & Ecology; Water Resources
GA DA3BJ
UT WOS:000367670600008
ER
PT J
AU Maiuri, M
Delfino, I
Cerullo, G
Manzoni, C
Pelmenschikov, V
Guo, YS
Wang, HX
Gee, LB
Dapper, CH
Newton, WE
Cramer, SP
AF Maiuri, Margherita
Delfino, Ines
Cerullo, Giulio
Manzoni, Cristian
Pelmenschikov, Vladimir
Guo, Yisong
Wang, Hongxin
Gee, Leland B.
Dapper, Christie H.
Newton, William E.
Cramer, Stephen P.
TI Low frequency dynamics of the nitrogenase MoFe protein via femtosecond
pump probe spectroscopy - Observation of a candidate promoting vibration
SO JOURNAL OF INORGANIC BIOCHEMISTRY
LA English
DT Article
DE Nitrogenase; Femtosecond; Pump-probe; NRVS; Proton transfer
ID CHARGE-TRANSFER DYNAMICS; DENSITY-FUNCTIONAL THEORY; IRON-MOLYBDENUM
COFACTOR; FEMO-COFACTOR; ACTIVE-SITE; AZOTOBACTER-VINELANDII; COHERENCE
SPECTROSCOPY; DEPENDENT NITROGENASE; INFRARED-SPECTROSCOPY;
NONSTATIONARY STATES
AB We have used femtosecond pump-probe spectroscopy (FPPS) to study the FeMo-cofactor within the nitrogenase (N(2)ase) MoFe protein from Azotobacter vinelandii. A sub-20-fs visible laser pulse was used to pump the sample to an excited electronic state, and a second sub-10-fs pulse was used to probe changes in transmission as a function of probe wavelength and delay time. The excited protein relaxes to the ground state with a similar to 12 Ps time constant. With the short laser pulse we coherently excited the vibrational modes associated with the FeMo-cofactor active site, which are then observed in the time domain. Superimposed on the relaxation dynamics, we distinguished a variety of oscillation frequencies with the strongest band peaks at similar to 84, 116, 189, and 226 cm(-1). Comparison with data from nuclear resonance vibrational spectroscopy (NRVS) shows that the latter pair of signals comes predominantly from the FeMo-cofactor. The frequencies obtained from the FPPS experiment were interpreted with normal mode calculations using both an empirical force field (EFF) and density functional theory (DFT). The FPPS data were also compared with the first reported resonance Raman (RR) spectrum of the N(2)ase MoFe protein. This approach allows us to outline and assign vibrational modes having relevance to the catalytic activity of N(2)ase. In particular, the 226 cm(-1) band is assigned as a potential 'promoting vibration' in the H-atom transfer (or proton-coupled electron transfer) processes that are an essential feature of N(2)ase catalysis. The results demonstrate that high-quality room-temperature solution data can be obtained on the MoFe protein by the FPPS technique and that these data provide added insight to the motions and possible operation of this protein and its catalytic prosthetic group. (C) 2015 Elsevier Inc All rights reserved.
C1 [Maiuri, Margherita; Cerullo, Giulio; Manzoni, Cristian] Politecn Milan, Dipartimento Fis, IFN CNR, I-20133 Milan, Italy.
[Delfino, Ines] Univ Tuscia, Dipartimento Sci Ecol & Biol, I-01100 Viterbo, Italy.
[Pelmenschikov, Vladimir] Tech Univ Berlin, Inst Chem, D-10623 Berlin, Germany.
[Guo, Yisong] Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA.
[Wang, Hongxin; Gee, Leland B.; Cramer, Stephen P.] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
[Dapper, Christie H.; Newton, William E.] Virginia Polytech Inst & State Univ, Dept Biochem, Blacksburg, VA 24061 USA.
[Cramer, Stephen P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Cramer, SP (reprint author), Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
EM spjcramer@ucdavis.edu
RI Guo, Yisong/C-7785-2009; Manzoni, Cristian/F-6669-2011;
OI Guo, Yisong/0000-0002-4132-3565; Manzoni, Cristian/0000-0002-4169-8869;
Gee, Leland/0000-0002-5817-3997
FU NIH [GM-65440]; NSF [CHE-1308384]; DOE Office of Biological and
Environmental Research; Deutsche Forschungsgemeinschaft (DFG) via the
'Unifying Concepts in Catalysis' (UniCat) Excellence Cluster; European
Research Council Advanced Grant STRATUS (ERC-AdG) [291198]
FX NRVS experiments at SPring-8 were performed at BL09XU with approval of
JASRI (Proposal No. 2010A1073-2013B0103), and at BL19LXU with approval
of RIKEN (Proposal No. 20130022 and 20140033). This work was funded by
the NIH grants GM-65440 (S.P.C.), NSF Grant CHE-1308384 (S.P.C.), the
DOE Office of Biological and Environmental Research (S.P.C.), and the
Deutsche Forschungsgemeinschaft (DFG) via the 'Unifying Concepts in
Catalysis' (UniCat) Excellence Cluster (V.P.). G.C. acknowledges support
by the European Research Council Advanced Grant STRATUS (ERC-2011-AdG
No. 291198).
NR 87
TC 0
Z9 0
U1 5
U2 16
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0162-0134
EI 1873-3344
J9 J INORG BIOCHEM
JI J. Inorg. Biochem.
PD DEC
PY 2015
VL 153
BP 128
EP 135
DI 10.1016/j.jinorgbio.2015.07.005
PG 8
WC Biochemistry & Molecular Biology; Chemistry, Inorganic & Nuclear
SC Biochemistry & Molecular Biology; Chemistry
GA DA1NT
UT WOS:000367563200013
PM 26343576
ER
PT J
AU Capar, J
Berg, S
Thomas, KE
Beavers, CM
Gagnon, KJ
Ghosh, A
AF Capar, Jan
Berg, Steffen
Thomas, Kolle E.
Beavers, Christine M.
Gagnon, Kevin J.
Ghosh, Abhik
TI Improved syntheses of beta-octabromo-meso-triarylcorrole derivatives
SO JOURNAL OF INORGANIC BIOCHEMISTRY
LA English
DT Article
DE Reductive demetallation; Corrole; Metallocorrole; Octabromocorrole; Iron
ID FREE-BASE CORROLES; REDUCTIVE DEMETALATION; DIBORON CORROLES; IRON;
RADICALS; INNOCENT
AB In spite of significant applications as starting materials for a variety of metallocorrole derivatives, free-base beta-octabromo-meso-triarylcorroles continue to be viewed as inaccessible. The reasons range from the need for tedious column-chromatographic purification to limitations of the reductive demetallation protocol for selected systems. Here we report that column chromatography may be entirely avoided for a number of beta-octabromo-meso-tris(p-X-phenyl)corrole derivatives, where X = CF3, NO2, F, H, CH3, and OCH3; instead, analytically pure products may be obtained by recrystallization from chloroform/methanol. In addition, we have presented an optimized synthesis of the heretofore inaccessible, sterically hindered ligand beta-octabromo-meso-tris(2,6-dichlorophenyl)corrole, H-3[Br8TDCPC], via reductive demetallation of the corresponding Mn(III) complex. With our earlier report of p-octabromo-meso-tris(pentafluorophenyl)corrole, H-3[Br8TPFPC], a comprehensive set of optimized synthetic protocols are thus in place for a good number of beta-octabromo-meso-triarylcorrole ligands. Furthermore, we have illustrated the use of these ligands by synthesizing the iron complexes Fe[Br8TDCPC]Cl and Fe[Br8TDCPC](py)(2), of which the latter lent itself to single-crystal X-ray structure determination. (C) 2015 Published by Elsevier Inc.
C1 [Capar, Jan; Berg, Steffen; Thomas, Kolle E.; Ghosh, Abhik] UiT Arctic Univ Norway, Dept Chem, N-9037 Tromso, Norway.
[Capar, Jan; Berg, Steffen; Thomas, Kolle E.; Ghosh, Abhik] UiT Arctic Univ Norway, Ctr Theoret & Computat Chem, N-9037 Tromso, Norway.
[Beavers, Christine M.; Gagnon, Kevin J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Ghosh, A (reprint author), UiT Arctic Univ Norway, Dept Chem, N-9037 Tromso, Norway.
EM abhik.ghosh@uit.no
RI Ghosh, Abhik/G-8164-2016
OI Ghosh, Abhik/0000-0003-1161-6364
FU Research Council of Norway [163054, 231086]; Office of Science, Office
of Basic Energy Sciences, of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This project was supported by FRINATEK projects 163054 and 231086 of the
Research Council of Norway and by the Advanced Light Source, Berkeley,
California. The Advanced Light Source is supported by the Director,
Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231.
NR 24
TC 3
Z9 3
U1 3
U2 11
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0162-0134
EI 1873-3344
J9 J INORG BIOCHEM
JI J. Inorg. Biochem.
PD DEC
PY 2015
VL 153
BP 162
EP 166
DI 10.1016/j.jinorgbio.2015.07.017
PG 5
WC Biochemistry & Molecular Biology; Chemistry, Inorganic & Nuclear
SC Biochemistry & Molecular Biology; Chemistry
GA DA1NT
UT WOS:000367563200017
PM 26354820
ER
PT J
AU Dewar, RL
Yoshida, Z
Bhattacharjee, A
Hudson, SR
AF Dewar, R. L.
Yoshida, Z.
Bhattacharjee, A.
Hudson, S. R.
TI Variational formulation of relaxed and multi-region relaxed
magnetohydrodynamics
SO JOURNAL OF PLASMA PHYSICS
LA English
DT Article
ID PRESSURE-INDUCED ISLANDS; MAGNETIC RECONNECTION; RELABELING SYMMETRIES;
PLASMA EQUILIBRIA; TOROIDAL PLASMA; FLUID; RELAXATION; STABILITY; IDEAL;
INSTABILITY
AB Ideal magnetohydrodynamics (IMHD) is strongly constrained by an infinite number of microscopic constraints expressing mass, entropy and magnetic flux conservation in each infinitesimal fluid element, the latter preventing magnetic reconnection. By contrast, in the Taylor relaxation model for formation of macroscopically self-organized plasma equilibrium states, all these constraints are relaxed save for the global magnetic fluxes and helicity. A Lagrangian variational principle is presented that leads to a new, fully dynamical, relaxed magnetohydrodynamics (RxMHD), such that all static solutions are Taylor states but also allows state with flow. By postulating that some long-lived macroscopic current sheets can act as barriers to relaxation, separating the plasma into multiple relaxation regions, a further generalization, multi-region relaxed magnetohydrodynamics (MRxMHD) is developed.
C1 [Dewar, R. L.] Australian Natl Univ, Res Sch Phys & Engn, Ctr Plasmas & Fluids, Canberra, ACT 2601, Australia.
[Yoshida, Z.] Univ Tokyo, Grad Sch Frontier Sci, Kashiwa, Chiba 2778561, Japan.
[Bhattacharjee, A.; Hudson, S. R.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Dewar, RL (reprint author), Australian Natl Univ, Res Sch Phys & Engn, Ctr Plasmas & Fluids, GPO Box 4, Canberra, ACT 2601, Australia.
EM robert.dewar@anu.edu.au
RI Hudson, Stuart/H-7186-2013;
OI Hudson, Stuart/0000-0003-1530-2733; Dewar, Robert/0000-0002-9518-7087
FU University of Tokyo; Princeton Plasma Physics Laboratory; Australian
Research Council [DP110102881]; JSPS [KAKENHI 23224014]; US DOE
[DE-ACO2-09CH11466]
FX One of the authors (R.L.D.) gratefully acknowledges the support of The
University of Tokyo and Princeton Plasma Physics Laboratory, during
collaboration visits, and some travel support from Australian Research
Council grant DP110102881. He also acknowledges useful discussions with
P. Morrison. The work of Z.Y. was supported under JSPS grant KAKENHI
23224014 and that of A.B. and S.R.H. was supported under US DOE grant
DE-ACO2-09CH11466. The plots were made using Mathematica 10, Wolfram
Research, Inc. (2015).
NR 62
TC 2
Z9 2
U1 2
U2 5
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0022-3778
EI 1469-7807
J9 J PLASMA PHYS
JI J. Plasma Phys.
PD DEC
PY 2015
VL 81
AR 515810604
DI 10.1017/S0022377815001336
PN 6
PG 22
WC Physics, Fluids & Plasmas
SC Physics
GA DA1SA
UT WOS:000367574600030
ER
PT J
AU Krommes, JA
AF Krommes, John A.
TI A tutorial introduction to the statistical theory of turbulent plasmas,
a half-century after Kadomtsev's Plasma Turbulence and the
resonance-broadening theory of Dupree and Weinstock
SO JOURNAL OF PLASMA PHYSICS
LA English
DT Article
ID DIRECT-INTERACTION APPROXIMATION; DRIFT-WAVE TURBULENCE; REALIZABLE
MARKOVIAN CLOSURE; QUASI-LINEAR THEORY; NON-GAUSSIAN STATISTICS; WEAKLY
UNSTABLE PLASMA; MAGNETIC-FIELD; ISOTROPIC TURBULENCE; KINETIC-THEORY;
ADIABATIC MODIFICATIONS
AB In honour of the 50th anniversary of the influential review/monograph on plasma turbulence by B. B. Kadomtsev as well as the seminal works of T. H. Dupree and J. Weinstock on resonance-broadening theory, an introductory tutorial is given about some highlights of the statistical dynamical description of turbulent plasmas and fluids, including the ideas of nonlinear incoherent noise, coherent damping, and self-consistent dielectric response. The statistical closure problem is introduced. Incoherent noise and coherent damping are illustrated with a solvable model of passive advection. Self-consistency introduces turbulent polarization effects that are described by the dielectric function D. Dupree's method of using D to estimate the saturation level of turbulence is described; then it is explained why a more complete theory that includes nonlinear noise is required. The general theory is best formulated in terms of Dyson equations for the covariance C and an infinitesimal response function R, which subsumes D. An important example is the direct-interaction approximation (DIA). It is shown how to use Novikov's theorem to develop an x-space approach to the DIA that is complementary to the original k-space approach of Kraichnan. A dielectric function is defined for arbitrary quadratically nonlinear systems, including the Navier Stokes equation, and an algorithm for determining the form of D in the DIA is sketched. The independent insights of Kadomtsev and Kraichnan about the problem of the DIA with random Galilean invariance are described. The mixing-length formula for drift-wave saturation is discussed in the context of closures that include nonlinear noise (shielded by D). The role of R in the calculation of the symmetry-breaking (zonostrophic) instability of homogeneous turbulence to the generation of inhomogeneous mean flows is addressed. The second-order cumulant expansion and the stochastic structural stability theory are also discussed in that context. Various historical research threads are mentioned and representative entry points to the literature are given. Some outstanding conceptual issues are enumerated.
C1 [Krommes, John A.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Krommes, JA (reprint author), Princeton Plasma Phys Lab, POB 451,MS 28, Princeton, NJ 08543 USA.
EM krommes@princeton.edu
FU US Department of Energy [DE-ACO2-09CH11466]
FX I am grateful to J. Burby, D. Ruiz, and Y. Shi for their candid
criticisms of an early draft of the manuscript, which led to wholesale
revisions. Congratulations to E. Shi for successfully playing the
editing game. I gladly incorporated excellent suggestions from A.
Bhattacharjee, I. Dodin, and G. Hammett The final form of the manuscript
benefited substantially from expert advice of an anonymous referee. This
work was supported by the US Department of Energy Contract
DE-ACO2-09CH11466.
NR 233
TC 0
Z9 0
U1 4
U2 8
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0022-3778
EI 1469-7807
J9 J PLASMA PHYS
JI J. Plasma Phys.
PD DEC
PY 2015
VL 81
AR 205810601
DI 10.1017/S0022377815000756
PN 6
PG 80
WC Physics, Fluids & Plasmas
SC Physics
GA DA1SA
UT WOS:000367574600002
ER
PT J
AU Strozzi, DJ
Perkins, LJ
Marinak, MM
Larson, DJ
Koning, JM
Logan, BG
AF Strozzi, David J.
Perkins, L. J.
Marinak, M. M.
Larson, D. J.
Koning, J. M.
Logan, B. G.
TI Imposed magnetic field and hot electron propagation in inertial fusion
hohlraums
SO JOURNAL OF PLASMA PHYSICS
LA English
DT Article
ID PLASMAS; PHYSICS
AB The effects of an imposed, axial magnetic field B-z0 on hydrodynamics and energetic electrons in inertial confinement fusion indirect-drive hohlraums are studied. We present simulations from the radiation-hydrodynamics code HYDRA of a low-adiabat ignition design for the National Ignition Facility, with and without B-z0 = 70 T. The field's main hydrodynamic effect is to significantly reduce electron thermal conduction perpendicular to the field. This results in hotter and less dense plasma on the equator between the capsule and hohlraum wall. The inner laser beams experience less inverse bremsstrahlung absorption before reaching the wall. The X-ray drive is thus stronger from the equator with the imposed field. We study superthermal, or 'hot', electron dynamics with the particle-in-cell code ZUMA, using plasma conditions from HYDRA. During the early-time laser picket, hot electrons based on two-plasmon decay in the laser entrance hole (Regan et al., Phys. Plasmas, vol. 17(2), 2010, 020703) are guided to the capsule by a 70 T field. Twelve times more energy deposits in the deuterium-tritium fuel. For plasma conditions early in peak laser power, we present mono-energetic test-case studies with ZUMA as well as sources based on inner-beam stimulated Raman scattering. The effect of the field on deuterium-tritium deposition depends strongly on the source location, namely whether hot electrons are generated on field lines that connect to the capsule.
C1 [Strozzi, David J.; Perkins, L. J.; Marinak, M. M.; Larson, D. J.; Koning, J. M.; Logan, B. G.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Strozzi, DJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM strozzi2@llnl.gov
OI Strozzi, David/0000-0001-8814-3791
FU US Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; LLNL LDRD project [14-ERD-028]
FX We gratefully acknowledge fruitful conversations with H. F. Robey, J. D.
Salmonson, C. A. Thomas, J. Hammer, and D. E. Hinkel. This work was
performed under the auspices of the US Department of Energy by Lawrence
Livermore National Laboratory under contract DE-AC52-07NA27344. Partly
supported by LLNL LDRD project 14-ERD-028.
NR 32
TC 4
Z9 4
U1 2
U2 12
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0022-3778
EI 1469-7807
J9 J PLASMA PHYS
JI J. Plasma Phys.
PD DEC
PY 2015
VL 81
AR 475810603
DI 10.1017/S0022377815001348
PN 6
PG 21
WC Physics, Fluids & Plasmas
SC Physics
GA DA1SA
UT WOS:000367574600031
ER
PT J
AU Greenwood, MS
AF Greenwood, Margaret Stautberg
TI Design of ultrasonic attenuation sensor with focused transmitter for
density measurements of a slurry in a large steel pipeline
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
AB To design an ultrasonic sensor to measure the attenuation and density of slurry carried by a large steel pipeline (diameter up to 70 cm) is the goal of this research. The pitch-catch attenuation sensor, placed in a small section of the pipeline, contains a send unit with a focused transducer that focuses the ultrasound to a small region of the receive unit on the opposite wall. The focused transducer consists of a section of a sphere (base similar to 12 cm) on the outer side of the send unit and a 500 kHz piezoelectric shell of lead zirconate titanate epoxied to it. The Rayleigh surface integral is used to calculate the pressure in steel and in water (slurry). An incremental method to plot the paths of ultrasonic rays shows that the rays focus where expected. Further, there is a region where the parallel rays are perpendicular to the wall of the receive unit. Designs for pipeline diameters of 25 and 71 cm show that the pressure in water at the receive transducer is about 17 times that for a pitch-catch system using 5 cm diameter disk transducers. The enhanced signal increases the sensitivity of the measurements and improves the signal-to-noise ratio. (C) 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by-cn-nd/4.0/).
C1 [Greenwood, Margaret Stautberg] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Greenwood, MS (reprint author), 33 Vienna Court, Richland, WA 99354 USA.
EM margaret.greenwood@pnnl.gov
FU Emeritus program at Pacific Northwest National Laboratory
FX M.S.G. wishes to acknowledge the support of the Emeritus program at
Pacific Northwest National Laboratory.
NR 18
TC 0
Z9 0
U1 1
U2 7
PU ACOUSTICAL SOC AMER AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0001-4966
EI 1520-8524
J9 J ACOUST SOC AM
JI J. Acoust. Soc. Am.
PD DEC
PY 2015
VL 138
IS 6
BP 3846
EP 3854
DI 10.1121/1.4937767
PG 9
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA DA1DE
UT WOS:000367535700051
PM 26723339
ER
PT J
AU Gasparov, VA
Bozovic, I
AF Gasparov, V. A.
Bozovic, I.
TI Complex conductance of ultrathin La2-xSrxCuO4 films and heterostructures
SO LOW TEMPERATURE PHYSICS
LA English
DT Article
ID KOSTERLITZ-THOULESS TRANSITION; 2-DIMENSIONAL COULOMB-GAS;
SUPERCONDUCTING FILMS; PENETRATION DEPTH; THIN-FILMS; TEMPERATURE;
YBA2CU3O7-DELTA; SUPERLATTICES; DEPENDENCE; OXIDES
AB We used atomic-layer molecular beam epitaxy to synthesize bilayers of a cuprate metal (La1.55Sr0.45CuO4) and a cuprate insulator (La2CuO4), in which each layer is just one unit cells thick. We have studied the magnetic field and temperature dependence of the complex sheet conductance, sigma(omega), of these films. Experiments have been carried out at frequencies between 2 and 50 MHz using the single-spiral coil technique. We found that: (i) the inductive response starts at Delta T = 3K lower temperatures than Re sigma(T), which in turn is characterized by a peak close to the transition, (ii) this shift is almost constant with magnetic field up to 14 mT; (iii) Delta T increases sharply up to 4K at larger fields and becomes constant up to 8 T; (iv) the vortex diffusion constant D(T) is not linear with T at low temperatures as in the case of free vortices, but is rather exponential due to pinning of vortex cores, and (v) the dynamic Berezinski-Kosterlitz-Thouless (BKT) transition temperature occurs at the point where Y = (l(omega)/xi(+))(2) = 1. Our experimental results can be described well by the extended dynamic theory of the BKT transition and dynamics of bound vortex-antivortex pairs with short separation lengths. (C) 2015 AIP Publishing LLC.
C1 [Gasparov, V. A.] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow District, Russia.
[Bozovic, I.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Bozovic, I.] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA.
RP Gasparov, VA (reprint author), Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow District, Russia.
EM vgasparo7@gmail.com
FU Russian Academy of Sciences Program "Quantum mesoscopic and
nonhomogeneous systems"; RFFI [12-02-00171]; U.S. Department of Energy,
Basic Energy Sciences, Materials Sciences and Engineering Division
FX We are grateful to V. F. Gantmakher and R. Huguenin for helpful
discussions. We would like to thank S. Zlobin for experimental aid. This
work was supported in part by the Russian Academy of Sciences Program
"Quantum mesoscopic and nonhomogeneous systems" and RFFI Grant
12-02-00171. The work at Brookhaven National Laboratory was supported by
the U.S. Department of Energy, Basic Energy Sciences, Materials Sciences
and Engineering Division.
NR 35
TC 1
Z9 1
U1 4
U2 22
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1063-777X
EI 1090-6517
J9 LOW TEMP PHYS+
JI Low Temp. Phys.
PD DEC
PY 2015
VL 41
IS 12
BP 965
EP 970
DI 10.1063/1.4935694
PG 6
WC Physics, Applied
SC Physics
GA DA1HN
UT WOS:000367547000003
ER
PT J
AU Shao, S
Wang, J
AF Shao, Shuai
Wang, Jian
TI Relaxation Mechanisms, Structure and Properties of Semi-Coherent
Interfaces
SO METALS
LA English
DT Article
ID NANOLAYERED COMPOSITES; DISLOCATION NUCLEATION; DEFORMATION MECHANISMS;
SCREW DISLOCATION; THIN-FILMS; BEHAVIOR; DEFECTS; TRANSMISSION;
MULTILAYERS; BOUNDARY
C1 [Shao, Shuai; Wang, Jian] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Shao, S (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
EM sshao@lanl.gov; wangj6@gmail.com
RI Wang, Jian/F-2669-2012; Shao, Shuai/B-2037-2014
OI Wang, Jian/0000-0001-5130-300X; Shao, Shuai/0000-0002-4718-2783
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences; Center for Materials at Irradiation and Mechanical Extremes,
an Energy Frontier Research Center - U.S. Department of Energy, Office
of Science, Office of Basic Energy Sciences [2008LANL1026]; Los Alamos
National Laboratory Directed Research and Development [LDRD-ER20140450]
FX S.S. and J.W. acknowledge the support provided by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences. S.S. also
thanks the support provided by the Center for Materials at Irradiation
and Mechanical Extremes, an Energy Frontier Research Center funded by
the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences under Grant No. 2008LANL1026. S.S and J.W. also acknowledge
support provided by the Los Alamos National Laboratory Directed Research
and Development (LDRD-ER20140450). J.W. also acknowledges the Start-up
provided by the University of Nebraska-Lincoln. The valuable discussion
with J.P. Hirth, Richard G. Hoagland, and Robert Pond is appreciated.
NR 46
TC 0
Z9 0
U1 3
U2 10
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 2075-4701
J9 METALS-BASEL
JI Metals
PD DEC
PY 2015
VL 5
IS 4
BP 1887
EP 1901
PG 15
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA DA1GU
UT WOS:000367545100010
ER
PT J
AU Forgan, EM
Blackburn, E
Holmes, AT
Briffa, AKR
Chang, J
Bouchenoire, L
Brown, SD
Liang, RX
Bonn, D
Hardy, WN
Christensen, NB
von Zimmermann, M
Hucker, M
Hayden, SM
AF Forgan, E. M.
Blackburn, E.
Holmes, A. T.
Briffa, A. K. R.
Chang, J.
Bouchenoire, L.
Brown, S. D.
Liang, Ruixing
Bonn, D.
Hardy, W. N.
Christensen, N. B.
von Zimmermann, M.
Huecker, M.
Hayden, S. M.
TI The microscopic structure of charge density waves in underdoped
YBa2Cu3O6.54 revealed by X-ray diffraction
SO NATURE COMMUNICATIONS
LA English
DT Article
ID ORDER; SUPERCONDUCTOR
AB Charge density wave (CDW) order appears throughout the underdoped high-temperature cuprate superconductors, but the underlying symmetry breaking and the origin of the CDW remain unclear. We use X-ray diffraction to determine the microscopic structure of the CDWs in an archetypical cuprate YBa2Cu3O6.54 at its superconducting transition temperature similar to 60 K. We find that the CDWs in this material break the mirror symmetry of the CuO2 bilayers. The ionic displacements in the CDWs have two components, which are perpendicular and parallel to the CuO2 planes, and are out of phase with each other. The planar oxygen atoms have the largest displacements, perpendicular to the CuO2 planes. Our results allow many electronic properties of the underdoped cuprates to be understood. For instance, the CDWs will lead to local variations in the electronic structure, giving an explicit explanation of density-wave states with broken symmetry observed in scanning tunnelling microscopy and soft X-ray measurements.
C1 [Forgan, E. M.; Blackburn, E.; Holmes, A. T.; Briffa, A. K. R.] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England.
[Chang, J.] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland.
[Bouchenoire, L.; Brown, S. D.] European Synchrotron Radiat Facil, XMaS, F-38043 Grenoble, France.
[Bouchenoire, L.; Brown, S. D.] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England.
[Liang, Ruixing; Bonn, D.; Hardy, W. N.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada.
[Christensen, N. B.] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark.
[von Zimmermann, M.] Deutsches Elektronen Synchrotron DESY, D-22603 Hamburg, Germany.
[Huecker, M.] Brookhaven Natl Lab, Condensed Matter Phys Mat Sci Dept, Upton, NY 11973 USA.
[Hayden, S. M.] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England.
RP Forgan, EM (reprint author), Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England.
EM E.M.Forgan@bham.ac.uk
RI Hayden, Stephen/F-4162-2011; Christensen, Niels/A-3947-2012; Chang,
Johan/F-1506-2014;
OI Hayden, Stephen/0000-0002-3209-027X; Christensen,
Niels/0000-0001-6443-2142; Chang, Johan/0000-0002-4655-1516;
Bouchenoire, Laurence/0000-0002-9466-5956
FU UK EPSRC [EP/J016977/1, EP/J015423/1]; Swiss National Science
Foundation; Danish Agency for Science, Technology and Innovation through
DANSCATT [0602-01982B]; NSERC; Canadian Institute for Advanced Research;
Office of Basic Energy Sciences, Division of Materials Science and
Engineering, US Department of Energy (DOE) [DE-AC02-98CH10886]; US DOE
[DE-AC02-06CH11357]
FX We thank Martin Long and Radu Coldea for very helpful discussions and
the UK EPSRC for funding under grant numbers EP/J016977/1 (E.B., E.M.F.
and A.T.H.) and EP/J015423/1 (S.M.H.). XMaS is an EPSRC-funded mid-range
facility. J.C. wishes to thank the Swiss National Science Foundation for
support. N.B.C. was supported by the Danish Agency for Science,
Technology and Innovation through DANSCATT and Grant No. 0602-01982B.
Sample preparation was funded through NSERC and the Canadian Institute
for Advanced Research. Work at Brookhaven is supported by the Office of
Basic Energy Sciences, Division of Materials Science and Engineering, US
Department of Energy (DOE), under Contract No. DE-AC02-98CH10886. We
thank U. Ruett and D. Robinson for invaluable assistance with
complementary higher energy measurements performed at P07, DESY &
6-ID-D, APS. Use of the Advanced Photon Source, an Office of Science
User Facility operated for the US DOE Office of Science by Argonne
National Laboratory, was supported by the US DOE under Contract No.
DE-AC02-06CH11357.
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PI LONDON
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SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 10064
DI 10.1038/ncomms10064
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1PU
UT WOS:000367568500004
PM 26648114
ER
PT J
AU King, JP
Jeong, KH
Vassiliou, CC
Shin, CS
Page, RH
Avalos, CE
Wang, HJ
Pines, A
AF King, Jonathan P.
Jeong, Keunhong
Vassiliou, Christophoros C.
Shin, Chang S.
Page, Ralph H.
Avalos, Claudia E.
Wang, Hai-Jing
Pines, Alexander
TI Room-temperature in situ nuclear spin hyperpolarization from optically
pumped nitrogen vacancy centres in diamond
SO NATURE COMMUNICATIONS
LA English
DT Article
ID LASER-POLARIZED XENON; NMR; LIQUIDS; PARAHYDROGEN; EXCHANGE; SOLIDS;
FIELDS; STATE; BULK; MRI
AB Low detection sensitivity stemming from the weak polarization of nuclear spins is a primary limitation of magnetic resonance spectroscopy and imaging. Methods have been developed to enhance nuclear spin polarization but they typically require high magnetic fields, cryogenic temperatures or sample transfer between magnets. Here we report bulk, room-temperature hyperpolarization of C-13 nuclear spins observed via high-field magnetic resonance. The technique harnesses the high optically induced spin polarization of diamond nitrogen vacancy centres at room temperature in combination with dynamic nuclear polarization. We observe bulk nuclear spin polarization of 6%, an enhancement of similar to 170,000 over thermal equilibrium. The signal of the hyperpolarized spins was detected in situ with a standard nuclear magnetic resonance probe without the need for sample shuttling or precise crystal orientation. Hyperpolarization via optical pumping/dynamic nuclear polarization should function at arbitrary magnetic fields enabling orders of magnitude sensitivity enhancement for nuclear magnetic resonance of solids and liquids under ambient conditions.
C1 [King, Jonathan P.; Jeong, Keunhong; Vassiliou, Christophoros C.; Shin, Chang S.; Page, Ralph H.; Avalos, Claudia E.; Wang, Hai-Jing; Pines, Alexander] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[King, Jonathan P.; Jeong, Keunhong; Vassiliou, Christophoros C.; Shin, Chang S.; Avalos, Claudia E.; Wang, Hai-Jing; Pines, Alexander] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Pines, A (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM pines@berkeley.edu
FU Office of Science, Office of Basic Energy Sciences, Materials Sciences
and Engineering Division, of the US Department of Energy
[DE-AC02-05CH11231]; Republic of Korea Army
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, Materials Sciences and Engineering Division, of
the US Department of Energy under Contract No. DE-AC02-05CH11231. K.J.
acknowledges fellowship support from the Republic of Korea Army. We
thank Eric Scott and Melanie Drake for providing the diamond sample used
in this study. We also thank Jeffrey Reimer, Birgit Hausmann and Carlos
Meriles for helpful discussions.
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PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 8965
DI 10.1038/ncomms9965
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1TL
UT WOS:000367578300002
PM 26639147
ER
PT J
AU Kondo, T
Nakayama, M
Chen, R
Ishikawa, JJ
Moon, EG
Yamamoto, T
Ota, Y
Malaeb, W
Kanai, H
Nakashima, Y
Ishida, Y
Yoshida, R
Yamamoto, H
Matsunami, M
Kimura, S
Inami, N
Ono, K
Kumigashira, H
Nakatsuji, S
Balents, L
Shin, S
AF Kondo, Takeshi
Nakayama, M.
Chen, R.
Ishikawa, J. J.
Moon, E. -G.
Yamamoto, T.
Ota, Y.
Malaeb, W.
Kanai, H.
Nakashima, Y.
Ishida, Y.
Yoshida, R.
Yamamoto, H.
Matsunami, M.
Kimura, S.
Inami, N.
Ono, K.
Kumigashira, H.
Nakatsuji, S.
Balents, L.
Shin, S.
TI Quadratic Fermi node in a 3D strongly correlated semimetal
SO NATURE COMMUNICATIONS
LA English
DT Article
ID SPIN; STATE
AB Strong spin-orbit coupling fosters exotic electronic states such as topological insulators and superconductors, but the combination of strong spin-orbit and strong electron-electron interactions is just beginning to be understood. Central to this emerging area are the 5d transition metal iridium oxides. Here, in the pyrochlore iridate Pr2Ir2O7, we identify a non-trivial state with a single-point Fermi node protected by cubic and time-reversal symmetries, using a combination of angle-resolved photoemission spectroscopy and first-principles calculations. Owing to its quadratic dispersion, the unique coincidence of four degenerate states at the Fermi energy, and strong Coulomb interactions, non-Fermi liquid behaviour is predicted, for which we observe some evidence. Our discovery implies that Pr2Ir2O7 is a parent state that can be manipulated to produce other strongly correlated topological phases, such as topological Mott insulator, Weyl semimetal, and quantum spin and anomalous Hall states.
C1 [Kondo, Takeshi; Nakayama, M.; Ishikawa, J. J.; Yamamoto, T.; Ota, Y.; Malaeb, W.; Kanai, H.; Nakashima, Y.; Ishida, Y.; Yoshida, R.; Yamamoto, H.; Nakatsuji, S.; Shin, S.] Univ Tokyo, ISSP, Kashiwa, Chiba 2778581, Japan.
[Chen, R.; Moon, E. -G.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.
[Chen, R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Chen, R.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Moon, E. -G.] Korea Adv Inst Sci & Technol, Dept Phys, Daejeon 305701, South Korea.
[Malaeb, W.] Beirut Arab Univ, Fac Sci, Dept Phys, Beirut, Lebanon.
[Matsunami, M.; Kimura, S.] UVSOR Facil, Inst Mol Sci, Okazaki, Aichi 4448585, Japan.
[Matsunami, M.] Toyota Technol Inst, Energy Mat Lab, Nagoya, Aichi 4688511, Japan.
[Kimura, S.] Osaka Univ, Grad Sch Frontier Biosci, Suita, Osaka 5650871, Japan.
[Inami, N.; Ono, K.; Kumigashira, H.] High Energy Accelerator Res Org KEK, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan.
[Nakatsuji, S.] Japan Sci & Technol Agcy JST, PRESTO, Kawaguchi, Saitama 3320012, Japan.
[Balents, L.] Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA.
RP Kondo, T (reprint author), Univ Tokyo, ISSP, Kashiwa, Chiba 2778581, Japan.
EM kondo1215@issp.u-tokyo.ac.jp
RI ISHIDA, Yukiaki/D-4261-2016; Kondo, Takeshi/H-2680-2016; Ono,
Kanta/I-3226-2014; Moon, Eun-Gook/G-5019-2015
OI Ono, Kanta/0000-0002-3285-9093;
FU JSPS KAKENHI [24740218, 25220707, 25707030]; Photon and Quantum Basic
Research Coordinated Development Program from MEXT; PRESTO, Japan
Science and Technology Agency [25707030]; Program for Advancing
Strategic International Networks to Accelerate the Circulation of
Talented Researchers from the Japanese Society for the Promotion of
Science [R2604]; DOE [DE-FG02-08ER46524]; MRSEC Program of the NSF [DMR
1121053]; [15H05882]; [15H05883]
FX This work was supported by JSPS KAKENHI (Nos 24740218, 25220707 and
25707030), by the Photon and Quantum Basic Research Coordinated
Development Program from MEXT, by PRESTO, Japan Science and Technology
Agency, Grants-in-Aid for Scientific Research (No. 25707030), by
Grants-in-Aids for Scientific Research on Innovative Areas (15H05882 and
15H05883), and Program for Advancing Strategic International Networks to
Accelerate the Circulation of Talented Researchers (No. R2604) from the
Japanese Society for the Promotion of Science. L.B. and R.C. were
supported by DOE grant DE-FG02-08ER46524, and E.-G.M. was supported by
the MRSEC Program of the NSF under Award No. DMR 1121053. We thank D.
Hamane for technical assistance in the SEM measurement. The use of the
facilities (the Materials Design and Characterization Laboratory and the
Electronic Microscope Section) at the Institute for Solid State Physics,
The University of Tokyo, is gratefully acknowledged.
NR 42
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PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 10042
DI 10.1038/ncomms10042
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1PN
UT WOS:000367567800002
PM 26640114
ER
PT J
AU Ma, J
Wang, Z
Wang, LW
AF Ma, Jie
Wang, Zhi
Wang, Lin-Wang
TI Interplay between plasmon and single-particle excitations in a metal
nanocluster
SO NATURE COMMUNICATIONS
LA English
DT Article
ID ENHANCED RAMAN-SCATTERING; DENSITY-FUNCTIONAL THEORY;
OPTICAL-PROPERTIES; HOT CARRIERS; NANOPARTICLES; MOLECULES; DEVICES;
SILVER; SIZE; GENERATION
AB Plasmon-generated hot carriers are used in photovoltaic or photochemical applications. However, the interplays between the plasmon and single-particle excitations in nanosystems have not been theoretically addressed using ab initio methods. Here we show such interplays in a Ag-55 nanocluster using real-time time-dependent density functional theory simulations. We find that the disappearance of the zero-frequency peak in the Fourier transform of the band-to-band transition coefficient is a hallmark of the plasmon. We show the importance of the d-states for hot-carrier generations. If the single-particle d-to-s excitations are resonant to the plasmon frequency, the majority of the plasmon energy will be converted into hot carriers, and the overall hot-carrier generation is enhanced by the plasmon; if such resonance does not exist, we observe an intriguing Rabi oscillation between the plasmon and hot carriers. Phonons play a minor role in plasmonic dynamics in such small systems. This study provides guidance on improving plasmonic applications.
C1 [Ma, Jie; Wang, Lin-Wang] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Joint Ctr Artificial Photosynth, Berkeley, CA 94720 USA.
[Ma, Jie; Wang, Zhi; Wang, Lin-Wang] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Wang, LW (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Joint Ctr Artificial Photosynth, Berkeley, CA 94720 USA.
EM lwwang@lbl.gov
FU Office of Science of the US Department of Energy [DE-SC0004993]; Office
of Science of the DOE [DE-AC05-00OR22725]
FX This material is based on the work performed by the Joint Center for
Artificial Photosynthesis, a DOE Energy Innovation Hub, supported
through the Office of Science of the US Department of Energy under Award
number DE-SC0004993. We used the resource of National Energy Research
Scientific Computing center (NERSC) located in Lawrence Berkeley
National Laboratory. We also used computational resources of the Oak
Ridge Leadership Computing Facility at the Oak Ridge National
Laboratory, which is supported by the Office of Science of the DOE under
contract No. DE-AC05-00OR22725, with computational time allocated by the
Innovative and Novel Computational Impact on Theory and Experiment
project.
NR 51
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PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 10107
DI 10.1038/ncomms10107
PG 11
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1QG
UT WOS:000367569800013
PM 26673449
ER
PT J
AU Palaniyappan, S
Huang, CK
Gautier, DC
Hamilton, CE
Santiago, MA
Kreuzer, C
Sefkow, AB
Shah, RC
Fernandez, JC
AF Palaniyappan, Sasi
Huang, Chengkun
Gautier, Donald C.
Hamilton, Christopher E.
Santiago, Miguel A.
Kreuzer, Christian
Sefkow, Adam B.
Shah, Rahul C.
Fernandez, Juan C.
TI Efficient quasi-monoenergetic ion beams from laser-driven relativistic
plasmas
SO NATURE COMMUNICATIONS
LA English
DT Article
ID ACCELERATED PROTON-BEAMS; HIGH-INTENSITY LASER; PREFORMED PLASMA;
IGNITION; TARGETS; PULSE; DYNAMICS; ELECTRON
AB Table-top laser-plasma ion accelerators have many exciting applications, many of which require ion beams with simultaneous narrow energy spread and high conversion efficiency. However, achieving these requirements has been elusive. Here we report the experimental demonstration of laser-driven ion beams with narrow energy spread and energies up to 18 MeV per nucleon and similar to 5% conversion efficiency (that is 4 J out of 80-J laser). Using computer simulations we identify a self-organizing scheme that reduces the ion energy spread after the laser exits the plasma through persisting self-generated plasma electric (similar to 10(12) V m(-1)) and magnetic (similar to 10(4) T) fields. These results contribute to the development of next generation compact accelerators suitable for many applications such as isochoric heating for ion-fast ignition and producing warm dense matter for basic science.
C1 [Palaniyappan, Sasi; Huang, Chengkun; Gautier, Donald C.; Hamilton, Christopher E.; Santiago, Miguel A.; Shah, Rahul C.; Fernandez, Juan C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Kreuzer, Christian] Univ Munich, Munich, Germany.
[Sefkow, Adam B.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Palaniyappan, S (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM sasi@lanl.gov; huangck@lanl.gov
RI Fernandez, Juan/H-3268-2011;
OI Fernandez, Juan/0000-0002-1438-1815; Gautier,
Donald/0000-0001-7778-311X; Hamilton, Christopher/0000-0002-1605-5992;
Huang, Chengkun/0000-0002-3176-8042
FU Los Alamos National Laboratory LDRD (Laboratory Directed Research and
Development) program [20120721ECR, 20140483ER, 20140029DR]
FX We gratefully acknowledge the support of the Los Alamos National
Laboratory LDRD (Laboratory Directed Research and Development) program
(projects 20120721ECR, 20140483ER, and 20140029DR) for this work. We
also thank the capable and dedicated Trident laser personnel: R. P.
Johnson, T. Shimada, R, Gonzales, S. Reid and R. Mortensen for the laser
operation. The simulations were run using LANL Institutional Computing
and ASC Capability Computing Campaign allocations. We thank L. Yin and
B. Albright for their help with VPIC simulations. S. P thanks J.
Schreiber for the thoughtful discussions.
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PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 10170
DI 10.1038/ncomms10170
PG 12
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1RW
UT WOS:000367574200002
PM 26657147
ER
PT J
AU Su, ZP
Zhu, H
Xiao, FL
Zong, QG
Zhou, XZ
Zheng, HN
Wang, YM
Wang, S
Hao, YX
Gao, ZL
He, ZG
Baker, DN
Spence, HE
Reeves, GD
Blake, JB
Wygant, JR
AF Su, Zhenpeng
Zhu, Hui
Xiao, Fuliang
Zong, Q. -G.
Zhou, X. -Z.
Zheng, Huinan
Wang, Yuming
Wang, Shui
Hao, Y. -X.
Gao, Zhonglei
He, Zhaoguo
Baker, D. N.
Spence, H. E.
Reeves, G. D.
Blake, J. B.
Wygant, J. R.
TI Ultra-low-frequency wave-driven diffusion of radiation belt relativistic
electrons
SO NATURE COMMUNICATIONS
LA English
DT Article
ID VAN ALLEN PROBES; OUTER-ZONE ELECTRONS; WHISTLER-MODE CHORUS; INNER
MAGNETOSPHERE; GEOMAGNETIC STORMS; ACCELERATION; ULF; ENERGIZATION;
DYNAMICS; PARTICLE
AB Van Allen radiation belts are typically two zones of energetic particles encircling the Earth separated by the slot region. How the outer radiation belt electrons are accelerated to relativistic energies remains an unanswered question. Recent studies have presented compelling evidence for the local acceleration by very-low-frequency (VLF) chorus waves. However, there has been a competing theory to the local acceleration, radial diffusion by ultra-low-frequency (ULF) waves, whose importance has not yet been determined definitively. Here we report a unique radiation belt event with intense ULF waves but no detectable VLF chorus waves. Our results demonstrate that the ULF waves moved the inner edge of the outer radiation belt earthward 0.3 Earth radii and enhanced the relativistic electron fluxes by up to one order of magnitude near the slot region within about 10 h, providing strong evidence for the radial diffusion of radiation belt relativistic electrons.
C1 [Su, Zhenpeng; Zhu, Hui; Zheng, Huinan; Wang, Yuming; Wang, Shui; Gao, Zhonglei] Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China.
[Su, Zhenpeng; Zheng, Huinan; Wang, Yuming; Wang, Shui] Univ Sci & Technol China, Collaborat Innovat Ctr Astronaut Sci & Technol, Hefei 230026, Anhui, Peoples R China.
[Zhu, Hui; Gao, Zhonglei] Univ Sci & Technol China, Sch Earth & Space Sci, Mengcheng Natl Geophys Observ, Hefei 230026, Anhui, Peoples R China.
[Xiao, Fuliang] Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
[Zong, Q. -G.; Zhou, X. -Z.; Hao, Y. -X.] Peking Univ, Inst Space Phys & Appl Technol, Beijing 100871, Peoples R China.
[Wang, Yuming] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China.
[He, Zhaoguo] Harbin Inst Technol, Shenzhen Grad Sch, Shenzhen 518055, Guangdong, Peoples R China.
[Baker, D. N.] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80303 USA.
[Spence, H. E.] Univ New Hampshire, Inst Study Earth Oceans & Space, Durham, NH 03824 USA.
[Reeves, G. D.] Los Alamos Natl Lab, Space Sci & Applicat Grp, Los Alamos, NM 87544 USA.
[Blake, J. B.] Aerosp Corp, El Segundo, CA 90245 USA.
[Wygant, J. R.] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
RP Su, ZP (reprint author), Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China.
EM szpe@mail.ustc.edu.cn
RI Xiao, Fuliang/B-9245-2011; Su, Zhenpeng/E-1641-2011; Zhou,
Xuzhi/D-1831-2011; Wang, Yuming/A-8968-2012;
OI Xiao, Fuliang/0000-0003-1487-6620; Su, Zhenpeng/0000-0001-5577-4538;
Zhou, Xuzhi/0000-0003-4953-1761; Wang, Yuming/0000-0002-8887-3919; Gao,
Zhonglei/0000-0001-7397-930X; Reeves, Geoffrey/0000-0002-7985-8098
FU National Natural Science Foundation of China [41422405, 41274169,
41274174]; Chinese Academy of Sciences [KZCX2-EW-QN510, KZZD-EW-01-4];
National Key Basic Research Special Foundation of China [2011CB811403];
Fundamental Research Funds for the Central Universities [WK2080000077]
FX This work was supported by the National Natural Science Foundation of
China grants 41422405, 41274169 and 41274174, the Chinese Academy of
Sciences grants KZCX2-EW-QN510 and KZZD-EW-01-4, the National Key Basic
Research Special Foundation of China grant 2011CB811403, the Fundamental
Research Funds for the Central Universities WK2080000077. We acknowledge
the University of Iowa as the source for the EMFISIS data in this study
(this acknowledgement does not imply endorsement of the publication by
the University of Iowa or its researchers), acknowledge J.H. King, N.
Papatashvilli and CDAWeb for providing interplanetary parameters and
magneto-spheric indices, and acknowledge C. Torrence and G. Compo for
providing the wavelet analysis software.
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PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 10096
DI 10.1038/ncomms10096
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1QG
UT WOS:000367569800002
PM 26690250
ER
PT J
AU Ulvestad, A
Welland, MJ
Collins, SSE
Harder, R
Maxey, E
Wingert, J
Singer, A
Hy, S
Mulvaney, P
Zapol, P
Shpyrko, OG
AF Ulvestad, A.
Welland, M. J.
Collins, S. S. E.
Harder, R.
Maxey, E.
Wingert, J.
Singer, A.
Hy, S.
Mulvaney, P.
Zapol, P.
Shpyrko, O. G.
TI Avalanching strain dynamics during the hydriding phase transformation in
individual palladium nanoparticles
SO NATURE COMMUNICATIONS
LA English
DT Article
ID OPEN 2-PHASE SYSTEMS; NANOCRYSTALLINE PALLADIUM; COHERENT INTERFACES;
SINGLE-CRYSTAL; GRAIN-BOUNDARY; HYDROGEN; THERMODYNAMICS; ADSORPTION;
KINETICS; EQUILIBRIUM
AB Phase transitions in reactive environments are crucially important in energy and information storage, catalysis and sensors. Nanostructuring active particles can yield faster charging/discharging kinetics, increased lifespan and record catalytic activities. However, establishing the causal link between structure and function is challenging for nanoparticles, as ensemble measurements convolve intrinsic single-particle properties with sample diversity. Here we study the hydriding phase transformation in individual palladium nanocubes in situ using coherent X-ray diffractive imaging. The phase transformation dynamics, which involve the nucleation and propagation of a hydrogen-rich region, are dependent on absolute time (aging) and involve intermittent dynamics (avalanching). A hydrogen-rich surface layer dominates the crystal strain in the hydrogen-poor phase, while strain inversion occurs at the cube corners in the hydrogen-rich phase. A three-dimensional phase-field model is used to interpret the experimental results. Our experimental and theoretical approach provides a general framework for designing and optimizing phase transformations for single nanocrystals in reactive environments.
C1 [Ulvestad, A.; Wingert, J.; Singer, A.; Shpyrko, O. G.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Ulvestad, A.; Welland, M. J.; Zapol, P.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Collins, S. S. E.; Mulvaney, P.] Univ Melbourne, Sch Chem, Parkville, Vic 3010, Australia.
[Collins, S. S. E.; Mulvaney, P.] Univ Melbourne, Inst Bio21, Parkville, Vic 3010, Australia.
[Harder, R.; Maxey, E.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Hy, S.] Univ Calif San Diego, Dept Nano Engn, La Jolla, CA 92093 USA.
RP Ulvestad, A (reprint author), Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
EM aulvestad@anl.gov
RI Ulvestad, Andrew/K-8888-2015
OI Ulvestad, Andrew/0000-0003-4611-2561
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-SC0001805]; Department of Energy (DOE) Office of Science,
Basic Energy Sciences, Division of Materials Science and Engineering
[DE-AC02-06CH11357]; ARC [LF100100117]; U.S. DOE Office of Science
[DE-AC02-06CH11357]
FX This work was supported by U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences, under Contract DE-SC0001805. A.U.
thanks the UCSD Inamori Fellowship. M.J.W. and P.Z. gratefully
acknowledge the computing resources provided on the Blues
high-performance computing cluster operated by the Laboratory Computing
Resource Center at Argonne National Laboratory and support of the
Department of Energy (DOE) Office of Science, Basic Energy Sciences,
Division of Materials Science and Engineering under Contract No.
DE-AC02-06CH11357. P.M. thanks the ARC for support through LF100100117.
This research used resources of the Advanced Photon Source, a U.S. DOE
Office of Science User Facility operated for the DOE Office of Science
by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. We
thank the staff at Argonne National Laboratory and the Advanced Photon
Source for their support.
NR 65
TC 5
Z9 5
U1 18
U2 46
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 10092
DI 10.1038/ncomms10092
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1QD
UT WOS:000367569500005
PM 26655832
ER
PT J
AU Barbose, G
Bird, L
Heeter, J
Flores-Espino, F
Wiser, R
AF Barbose, Galen
Bird, Lori
Heeter, Jenny
Flores-Espino, Francisco
Wiser, Ryan
TI Costs and benefits of renewables portfolio standards in the United
States
SO RENEWABLE & SUSTAINABLE ENERGY REVIEWS
LA English
DT Review
DE Renewable portfolio standard; Costs and benefits analysis; Cost caps;
Renewable energy certificates
ID POLICIES; ENERGY; DEPLOYMENT; PRICES
AB Most state renewables portfolio standard (RPS) policies in the United States have five or more years of implementation experience. Understanding the costs and benefits of these policies is essential for RPS administrators tasked with implementation and for policymakers evaluating changes to existing or development of new RPS policies. This study estimates and summarizes historical RPS costs and benefits, and provides a critical examination of cost and benefit estimation methods used by utilities and regulators. We find that RPS compliance costs constituted less than 2% of average retail rates in most U.S. states over the 2010-2013 period, although substantial variation exists, both from year-to-year and across states. Compared to RPS costs, relatively few states have undertaken detailed estimates of broader societal benefits of RPS programs, and then only for a subset of potential impacts, typically some combination of avoided emissions and human health benefits, economic development impacts, and wholesale electricity market price reductions. Although direct comparison to RPS cost estimates is not possible, the available studies of broader RPS benefits suggest that in many cases these impacts may at least be of the same order of magnitude as costs, highlighting a need for more refined analysis. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Barbose, Galen; Wiser, Ryan] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Bird, Lori; Heeter, Jenny; Flores-Espino, Francisco] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Barbose, G (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM glbarbose@lbl.gov
OI Flores-Espino, Francisco/0000-0002-7857-8342; Barbose,
Galen/0000-0003-4687-2309
FU Office of Energy Efficiency & Renewable Energy of the U.S. Department of
Energy [DE-AC02-05CH11231]; [DE-AC36-08GO28308]
FX NREL is a national laboratory of the U.S. Department of Energy, Office
of Energy Efficiency & Renewable Energy, operated by the Alliance for
Sustainable Energy, LLC, under Contract DE-AC36-08GO28308. LBNL's
contributions to this report were funded by the Office of Energy
Efficiency & Renewable Energy of the U.S. Department of Energy under
Contract no. DE-AC02-05CH11231. The authors would like to thank
individual reviewers who provided comments on earlier drafts of this
work, as well as Jarett Zuboy for editorial assistance.
NR 39
TC 7
Z9 7
U1 7
U2 10
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1364-0321
J9 RENEW SUST ENERG REV
JI Renew. Sust. Energ. Rev.
PD DEC
PY 2015
VL 52
BP 523
EP 533
DI 10.1016/j.rser.2015.07.175
PG 11
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels
SC Science & Technology - Other Topics; Energy & Fuels
GA DA4GI
UT WOS:000367757800045
ER
PT J
AU Schuelke-Leech, BA
Barry, B
Muratori, M
Yurkovich, BJ
AF Schuelke-Leech, Beth-Anne
Barry, Betsy
Muratori, Matteo
Yurkovich, B. J.
TI Big Data issues and Opportunities for electric utilities
SO RENEWABLE & SUSTAINABLE ENERGY REVIEWS
LA English
DT Review
DE Electric utilities; Big Data Analytics; Smart grid; Data management;
Policy discourse
ID RESEARCH-AND-DEVELOPMENT; TECHNOLOGIES; INDUSTRIES; MARKETS; POWER
AB Advances and innovations are crucial for a sustainable electricity system that includes smart grid technologies, renewable energy sources, and greater energy efficiency. These technologies are often layered on top of the existing infrastructure and legacy information systems. The management and utilization of the data generated from the different components of the electrical system are critical for the successful deployment and operation of this system. This paper reviews the issues and opportunities of the use of Big Data for electric utilities. Big Data provides the opportunity to better monitor, correct, and integrate smart grid technologies and renewable energy. At the same time, data management and utilization must be integrated into organizational operations if the potentials are to be realized. Electric utilities are conservative, heavily-regulated, and concerned with both system reliability and overall profitability. Thus, technological, economic, institutional, and policy constraints must all be addressed. After reviewing these issues and opportunities, we empirically analyze whether these are part of the discussions about electric utilities with federal policymakers. The results show that while conversations about electric utilities overall are plentiful, conversations about data in the context of electric utilities are relatively rare. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Schuelke-Leech, Beth-Anne] Ohio State Univ, John Glenn Coll Publ Affairs, Columbus, OH 43212 USA.
[Schuelke-Leech, Beth-Anne; Yurkovich, B. J.] Ohio State Univ, CAR, Columbus, OH 43212 USA.
[Barry, Betsy] Illocution Inc, Athens, GA 30605 USA.
[Muratori, Matteo] Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD 20740 USA.
RP Schuelke-Leech, BA (reprint author), Ohio State Univ, John Glenn Coll Publ Affairs, Columbus, OH 43212 USA.
EM schuelke-leech.1@osu.edu; bbarry@illocutioninc.com;
matteo.muratori@pnnl.gov; yurkovich.7@osu.edu
NR 49
TC 2
Z9 2
U1 12
U2 37
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1364-0321
J9 RENEW SUST ENERG REV
JI Renew. Sust. Energ. Rev.
PD DEC
PY 2015
VL 52
BP 937
EP 947
DI 10.1016/j.rser.2015.07.128
PG 11
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels
SC Science & Technology - Other Topics; Energy & Fuels
GA DA4GI
UT WOS:000367757800079
ER
PT J
AU Rotenberg, E
Bostwick, A
AF Rotenberg, Eli
Bostwick, Aaron
TI Super lattice effects in graphene on SiC(0001) and Ir(111) probed by
ARPES
SO SYNTHETIC METALS
LA English
DT Article
DE Graphene; Bandstructure; Symmetry; ARPES
ID RESOLVED PHOTOEMISSION; ELECTRONIC-PROPERTIES; EPITAXIAL GRAPHENE; DOPED
GRAPHENE; LAYER GRAPHENE; GRAPHITE; SPECTROSCOPY; SUPERCONDUCTORS;
SYMMETRY; BANDGAP
AB We review the angle-resolved photoemission spectroscopy (ARPES) technique and its applications to epitaxially grown graphenes. In particular we discuss the extraction of symmetry-breaking factors associated with superlattice formation due to substrate lattice mismatch. For UHV grown graphene on SiC, which has a quasi-13 x 13 superlattice (with respect to graphene), no coupling vectors exist to break the chiral symmetry, and a gap at E-D is not observed. For graphene on Ir(111), lattice mismatch induces a well-known Moire pattern with 10 x 10 (relative to graphene) symmetry. Despite the fact that chirality should be preserved under this symmetry, energy gaps are found at the main as well as the mini-Dirac crossings. A simple tight binding model that neglects chirality can explain the observed miniband spectrum in graphene on Ir(111). (C) 2015 Elsevier B.V. All rights reserved.
C1 [Rotenberg, Eli; Bostwick, Aaron] EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Rotenberg, E (reprint author), EO Lawrence Berkeley Natl Lab, MS6-2100, Berkeley, CA 94720 USA.
EM erotenberg@lbl.gov
RI Rotenberg, Eli/B-3700-2009
OI Rotenberg, Eli/0000-0002-3979-8844
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX Access to previously unpublished graphene on Ir(111) figures was kindly
provided by K. McCarty. The Advanced Light Source is supported by the
Director, Office of Science, Office of Basic Energy Sciences, of the
U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 64
TC 1
Z9 1
U1 2
U2 19
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0379-6779
J9 SYNTHETIC MET
JI Synth. Met.
PD DEC
PY 2015
VL 210
SI SI
BP 85
EP 94
DI 10.1016/j.synthmet.2015.07.030
PN A
PG 10
WC Materials Science, Multidisciplinary; Physics, Condensed Matter; Polymer
Science
SC Materials Science; Physics; Polymer Science
GA DA4LA
UT WOS:000367770200010
ER
PT J
AU Bao, J
Hou, ZS
Huang, MY
Liu, Y
AF Bao, Jie
Hou, Zhangshuan
Huang, Maoyi
Liu, Ying
TI On Approaches to Analyze the Sensitivity of Simulated Hydrologic Fluxes
to Model Parameters in the Community Land Model
SO WATER
LA English
DT Article
DE sensitivity analysis; model selection; hydrologic parameters; Community
Land Model
ID REGRESSION; EMULATION; BOXPLOT
AB Effective sensitivity analysis approaches are needed to identify important parameters or factors and their uncertainties in complex Earth system models composed of multi-phase multi-component phenomena and multiple biogeophysical-biogeochemical processes. In this study, the impacts of 10 hydrologic parameters in the Community Land Model on simulations of runoff and latent heat flux are evaluated using data from a watershed. Different metrics, including residual statistics, the Nash-Sutcliffe coefficient, and log mean square error, are used as alternative measures of the deviations between the simulated and field observed values. Four sensitivity analysis (SA) approaches, including analysis of variance based on the generalized linear model, generalized cross validation based on the multivariate adaptive regression splines model, standardized regression coefficients based on a linear regression model, and analysis of variance based on support vector machine, are investigated. Results suggest that these approaches show consistent measurement of the impacts of major hydrologic parameters on response variables, but with differences in the relative contributions, particularly for the secondary parameters. The convergence behaviors of the SA with respect to the number of sampling points are also examined with different combinations of input parameter sets and output response variables and their alternative metrics. This study helps identify the optimal SA approach, provides guidance for the calibration of the Community Land Model parameters to improve the model simulations of land surface fluxes, and approximates the magnitudes to be adjusted in the parameter values during parametric model optimization.
C1 [Bao, Jie] Pacific NW Natl Lab, Expt & Computat Engn Grp, Richland, WA 99352 USA.
[Hou, Zhangshuan] Pacific NW Natl Lab, Hydrol Grp, Richland, WA 99352 USA.
[Huang, Maoyi; Liu, Ying] Pacific NW Natl Lab, Earth Syst Anal & Modeling Grp, Richland, WA 99352 USA.
RP Bao, J (reprint author), Pacific NW Natl Lab, Expt & Computat Engn Grp, Richland, WA 99352 USA.
EM jie.bao@pnnl.gov; zhangshuan.hou@pnnl.gov; maoyi.huang@pnnl.gov;
ying.liu@pnnl.gov
RI Huang, Maoyi/I-8599-2012; Hou, Zhangshuan/B-1546-2014
OI Huang, Maoyi/0000-0001-9154-9485; Hou, Zhangshuan/0000-0002-9388-6060
FU Office of Science Advanced Scientific Computing Research (ASCR); U.S.
Department of Energy (DOE) Office of Science Biological and
Environmental Research (BER) as part of the Earth System Modeling
Program; DOE by Battelle Memorial Institute [DE-AC05-76RLO1830]
FX This work is supported by the Office of Science Advanced Scientific
Computing Research (ASCR), and partially by the U.S. Department of
Energy (DOE) Office of Science Biological and Environmental Research
(BER) as part of the Earth System Modeling Program. Pacific Northwest
National Laboratory is operated for the DOE by Battelle Memorial
Institute under Contract DE-AC05-76RLO1830.
NR 57
TC 1
Z9 1
U1 1
U2 9
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 2073-4441
J9 WATER-SUI
JI Water
PD DEC
PY 2015
VL 7
IS 12
BP 6810
EP 6826
DI 10.3390/w7126662
PG 17
WC Water Resources
SC Water Resources
GA DA1CK
UT WOS:000367533700009
ER
PT J
AU Bhimanapati, GR
Lin, Z
Meunier, V
Jung, Y
Cha, J
Das, S
Xiao, D
Son, Y
Strano, MS
Cooper, VR
Liang, LB
Louie, SG
Ringe, E
Zhou, W
Kim, SS
Naik, RR
Sumpter, BG
Terrones, H
Xia, FN
Wang, YL
Zhu, J
Akinwande, D
Alem, N
Schuller, JA
Schaak, RE
Terrones, M
Robinson, JA
AF Bhimanapati, Ganesh R.
Lin, Zhong
Meunier, Vincent
Jung, Yeonwoong
Cha, Judy
Das, Saptarshi
Xiao, Di
Son, Youngwoo
Strano, Michael S.
Cooper, Valentino R.
Liang, Liangbo
Louie, Steven G.
Ringe, Emilie
Zhou, Wu
Kim, Steve S.
Naik, Rajesh R.
Sumpter, Bobby G.
Terrones, Humberto
Xia, Fengnian
Wang, Yeliang
Zhu, Jun
Akinwande, Deji
Alem, Nasim
Schuller, Jon A.
Schaak, Raymond E.
Terrones, Mauricio
Robinson, Joshua A.
TI Recent Advances in Two-Dimensional Materials beyond Graphene
SO ACS NANO
LA English
DT Review
DE two-dimensional materials; graphene; heterostructures; transition metal
dichalcogenide; phospherene; silicene; germanene; stanene; van der Waals
epitaxy; van der Waals solid
ID TRANSITION-METAL DICHALCOGENIDES; CHEMICAL-VAPOR-DEPOSITION;
FIELD-EFFECT TRANSISTORS; DER-WAALS HETEROSTRUCTURES; DENSITY-FUNCTIONAL
THEORY; HEXAGONAL BORON-NITRIDE; LAYER BLACK PHOSPHORUS; VERTICALLY
ALIGNED LAYERS; MOLECULAR-BEAM EPITAXY; LARGE-AREA SYNTHESIS
AB The isolation of graphene in 2004 from graphite was a defining moment for the "birth" of a field: two-dimensional (20) materials. In recent years, there has been a rapidly increasing number of papers focusing on non-graphene layered materials, including transition-metal dichalcogenides (TMDs), because of the new properties and applications that emerge upon 2D confinement. Here, we review significant recent advances and important new developments in 2D materials "beyond graphene". We provide insight into the theoretical modeling and understanding of the van der Waals (vdW) forces that hold together the 20 layers in bulk solids, as well as their excitonic properties and growth morphologies. Additionally, we highlight recent breakthroughs in TMD synthesis and characterization and discuss the newest families of 2D materials, including monoelement 20 materials (i.e., silicene, phosphorene, etc.) and transition metal carbide- and carbon nitride-based MXenes. We then discuss the doping and functionalization of 2D materials beyond graphene that enable device applications, followed by advances in electronic, optoelectronic, and magnetic devices and theory. Finally, we provide perspectives on the future of 20 materials beyond graphene.
C1 [Bhimanapati, Ganesh R.; Alem, Nasim; Terrones, Mauricio; Robinson, Joshua A.] Penn State Univ, Ctr Dimens & Layered Mat 2, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
[Lin, Zhong; Zhu, Jun; Terrones, Mauricio] Penn State Univ, Ctr Dimens & Layered Mat 2, Dept Phys, University Pk, PA 16802 USA.
[Jung, Yeonwoong] Univ Cent Florida, Dept Mat Sci & Engn, Nanosci Technol Ctr, Orlando, FL 32826 USA.
[Cha, Judy] Yale Univ, Sch Engn & Appl Sci, Dept Mech Engn & Mat Sci, New Haven, CT 06520 USA.
[Meunier, Vincent; Liang, Liangbo] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
[Meunier, Vincent; Liang, Liangbo; Terrones, Humberto] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Das, Saptarshi] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA.
[Das, Saptarshi] Purdue Univ, Dept ECE, W Lafayette, IN 47907 USA.
[Xiao, Di] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
[Son, Youngwoo; Strano, Michael S.] MIT, Dept Chem Engn, Cambridge, MA 02139 USA.
[Cooper, Valentino R.; Zhou, Wu; Sumpter, Bobby G.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Cooper, Valentino R.; Zhou, Wu; Sumpter, Bobby G.] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
[Louie, Steven G.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Kim, Steve S.; Naik, Rajesh R.] Air Force Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Kim, Steve S.] UES Inc, Beavercreek, OH 45432 USA.
[Xia, Fengnian] Yale Univ, Dept Elect Engn, New Haven, CT 06511 USA.
[Louie, Steven G.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Wang, Yeliang] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.
[Ringe, Emilie] Rice Univ, Dept Mat Sci & Nano Engn, Houston, TX 77005 USA.
[Akinwande, Deji] Univ Texas Austin, Microelect Res Ctr, Austin, TX 78758 USA.
[Schuller, Jon A.] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA.
[Schaak, Raymond E.; Terrones, Mauricio] Penn State Univ, Dept Chem, University Pk, PA 16802 USA.
[Schaak, Raymond E.; Terrones, Mauricio] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA.
RP Robinson, JA (reprint author), Penn State Univ, Ctr Dimens & Layered Mat 2, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
EM jrobinson@psu.edu
RI Xiao, Di/B-1830-2008; WANG, Yeliang/D-9643-2012; Schuller,
Jon/G-3846-2011; Sumpter, Bobby/C-9459-2013; Cooper, Valentino
/A-2070-2012; Zhu, Jun/A-1610-2014; Liang, Liangbo/H-4486-2011; Lin,
Zhong/O-4339-2014; Zhou, Wu/D-8526-2011
OI Meunier, Vincent/0000-0002-7013-179X; Xiao, Di/0000-0003-0165-6848;
Sumpter, Bobby/0000-0001-6341-0355; Cooper, Valentino
/0000-0001-6714-4410; Liang, Liangbo/0000-0003-1199-0049; Zhou,
Wu/0000-0002-6803-1095
FU Corning, Inc.; Kyma Technologies; FEI; Oak Ridge Associated Universities
(ORAU); Penn State Materials Research Institute; Center for Nanoscale
Science; NSF; DOE; DARPA; STARnet; NYStar; ONR; DTRA; AFRL; ARO; AFOSR
FX This review was developed out of the workshop "Beyond Graphene: From
Atoms to Applications", hosted by the Penn State Center for
Two-Dimensional and Layered Materials on May 11-12, 2015 with
sponsorship from Corning, Inc., Kyma Technologies, FEI, and Oak Ridge
Associated Universities (ORAU). Support was also provided by the Penn
State Materials Research Institute and Center for Nanoscale Science.
JAR. and M.T. also wish to acknowledge Rosemary Bittel for logistical
support. Finally, the authors would like to acknowledge those agencies
who have funded their research in 20 materials: NSF, DOE, DARPA,
STARnet, NYStar, ONR, DTRA, AFRL, ARO, AFOSR.
NR 412
TC 148
Z9 148
U1 428
U2 1270
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 11509
EP 11539
DI 10.1021/acsnano.5b05556
PG 31
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100002
PM 26544756
ER
PT J
AU Erikson, KJ
He, XW
Talin, AA
Mills, B
Hauge, RH
Iguchi, T
Fujimura, N
Kawano, Y
Kono, J
Leonard, F
AF Erikson, Kristopher J.
He, Xiaowei
Talin, A. Alec
Mills, Bernice
Hauge, Robert H.
Iguchi, Takashi
Fujimura, Naoki
Kawano, Yukio
Kono, Junichiro
Leonard, Francois
TI Figure of Merit for Carbon Nanotube Photothermoelectric Detectors
SO ACS NANO
LA English
DT Article
DE carbon nanotubes; photodetector; thermoelectric; photothermoelectric;
Joule heating
ID BROAD-BAND; FILMS; PHOTODETECTOR; NOISE
AB Carbon nanotubes (CNTs) have emerged as promising materials for visible, infrared, and terahertz photodetectors. Further development of these photodetectors requires a fundamental understanding of the mechanisms that govern their behavior as well as the establishment of figures of merit for technology applications. Recently, a number of CNT detectors have been shown to operate based on the photothermoelectric effect. Here we present a figure of merit for these detectors, which includes the properties of the material and the device. In addition, we use a suite of experimental characterization methods for the thorough analysis of the electrical, thermoelectric, electrothermal, and photothermal properties of the CNT thin-film devices. Our measurements determine the quantities that enter the figure of merit and allow us to establish a path toward future performance improvements.
C1 [Erikson, Kristopher J.; Talin, A. Alec; Mills, Bernice; Leonard, Francois] Sandia Natl Labs, Livermore, CA 94551 USA.
[He, Xiaowei; Kono, Junichiro] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA.
[Hauge, Robert H.] Rice Univ, Dept Chem, Houston, TX 77005 USA.
[Iguchi, Takashi; Fujimura, Naoki; Kawano, Yukio] Tokyo Inst Technol, Dept Phys Elect, Quantum Nanoelect Res Ctr, Meguro Ku, Tokyo 1528552, Japan.
RP Kono, J (reprint author), Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA.
EM kono@rice.edu; fleonar@sandia.gov
OI Fujimura, Naoki/0000-0002-0421-2065
FU U.S. Department of Energy, Office of Science, under the National
Institute for Nano Engineering (NINE) at Sandia National Laboratories;
Lockheed-Martin Rice University LANCER Program; DOE [BES
DE-FG02-06ER46308]; Robert A. Welch Foundation [C-1509]; U.S. Department
of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
FX This work was supported by the U.S. Department of Energy, Office of
Science, under the National Institute for Nano Engineering (NINE) at
Sandia National Laboratories, and by the Lockheed-Martin Rice University
LANCER Program. X.H. and J.K. were supported by DOE BES
DE-FG02-06ER46308 (preparation and teraherz/infrared characterization of
aligned carbon nanotubes) and the Robert A. Welch Foundation Grant No.
C-1509 (detector fabrication). Sandia National Laboratories is a
multiprogram laboratory managed and operated by Sandia Corporation, a
wholly owned subsidiary of Lockheed Martin Corporation, for the U.S.
Department of Energy's National Nuclear Security Administration under
contract DE-AC04-94AL85000.
NR 20
TC 4
Z9 4
U1 9
U2 56
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 11618
EP 11627
DI 10.1021/acsnano.5b06160
PG 10
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100012
PM 26512738
ER
PT J
AU Ievlev, AV
Jesse, S
Cochell, TJ
Unocic, RR
Protopopescu, VA
Kalinin, SV
AF Ievlev, Anton V.
Jesse, Stephen
Cochell, Thomas J.
Unocic, Raymond R.
Protopopescu, Vladimir A.
Kalinin, Sergei V.
TI Quantitative Description of Crystal Nucleation and Growth from in Situ
Scanning Transmission Electron Microscopy
SO ACS NANO
LA English
DT Article
DE platinum nanoparticles; nucleation and growth; local kinetics;
(scanning) transmission electron microscopy; inverse problem
ID GOLD NANOPARTICLES; CDSE NANOCRYSTALS; SOLAR-CELLS; LIQUID;
SEMICONDUCTOR; INTERFACE; CATALYSIS; OXIDE; TIO2
AB Recent advances in liquid cell (scanning) transmission electron microscopy (S)TEM has enabled in situ nanoscale investigations of controlled nanocrystal growth mechanisms. Here, we experimentally and quantitatively investigated the nucleation and growth mechanisms of Pt nanostructures from an aqueous solution of K2PtCl6. Averaged statistical, network, and local approaches have been used for the data analysis and the description of both collective particles dynamics and local growth features. In particular, interaction between neighboring particles has been revealed and attributed to reduction of the platinum concentration in the vicinity of the particle boundary. The local approach for solving the inverse problem showed that particles dynamics can be simulated by a stationary diffusional model. The obtained results are important for understanding nanocrystal formation and growth processes and for optimization of synthesis conditions.
C1 [Ievlev, Anton V.; Jesse, Stephen; Unocic, Raymond R.; Protopopescu, Vladimir A.; Kalinin, Sergei V.] Oak Ridge Natl Lab, Inst Funct Imaging Mat, Oak Ridge, TN 37831 USA.
[Ievlev, Anton V.; Jesse, Stephen; Unocic, Raymond R.; Kalinin, Sergei V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Cochell, Thomas J.] Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40506 USA.
[Protopopescu, Vladimir A.] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA.
RP Ievlev, AV (reprint author), Oak Ridge Natl Lab, Inst Funct Imaging Mat, One Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM ievlevav@ornl.gov
RI Jesse, Stephen/D-3975-2016; Ievlev, Anton/H-3678-2012
OI Jesse, Stephen/0000-0002-1168-8483; Ievlev, Anton/0000-0003-3645-0508
NR 24
TC 4
Z9 4
U1 10
U2 65
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 11784
EP 11791
DI 10.1021/acsnano.5b03720
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100027
PM 26509714
ER
PT J
AU Song, JX
Yu, ZX
Gordin, ML
Li, XL
Peng, HS
Wang, DH
AF Song, Jiangxuan
Yu, Zhaoxin
Gordin, Mikhail L.
Li, Xiaolin
Peng, Huisheng
Wang, Donghai
TI Advanced Sodium Ion Battery Anode Constructed via Chemical Bonding
between Phosphorus, Carbon Nanotube, and Cross-Linked Polymer Binder
SO ACS NANO
LA English
DT Article
DE sodium ion battery; phosphorus; carbon nanotube; chemical bonding;
cross-linked binder
ID HIGH-PERFORMANCE ANODE; LITHIUM-SULFUR BATTERIES; SUPERIOR RATE
CAPABILITY; HIGH-CAPACITY; ENHANCED PERFORMANCE; SILICON NANOWIRES;
ENERGY-STORAGE; RED PHOSPHORUS; CYCLE LIFE; LOW-COST
AB Maintaining structural stability is a great challenge for high-capacity conversion electrodes with large volume change but is necessary for the development of high-energy-density, long-cycling batteries. Here, we report a stable phosphorus anode for sodium ion batteries by the synergistic use of chemically bonded phosphorus-carbon nanotube (P-CNT) hybrid and crosslinked polymer binder. The P-CNT hybrid was synthesized through ball-milling of red phosphorus and carboxylic group functionalized carbon nanotubes. The P-O-C bonds formed in this process help maintain contact between phosphorus and CNTs, leading to a durable hybrid. In addition, cross-linked carboxymethyl cellulose-citric acid binder was used to form a robust electrode. As a result, this anode delivers a stable cycling capacity of 1586.2 mAh/g after 100 cycles, along with high initial Coulombic efficiency of 84.7% and subsequent cycling efficiency of similar to 99%. The unique electrode framework through chemical bonding strategy reported here is potentially inspirable for other electrode materials with large volume change in use.
C1 [Song, Jiangxuan; Yu, Zhaoxin; Gordin, Mikhail L.; Wang, Donghai] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
[Li, Xiaolin] Pacific NW Natl Lab, Dept Stationary Energy Storage, Richland, WA 99354 USA.
[Peng, Huisheng] Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.
[Peng, Huisheng] Fudan Univ, Adv Mat Lab, Shanghai 200438, Peoples R China.
RP Wang, DH (reprint author), Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
EM dwang@psu.edu
RI Wang, Donghai/L-1150-2013; Peng, Huisheng/G-8867-2011
OI Wang, Donghai/0000-0001-7261-8510;
FU U.S. Department of Energy's (DOE's) Office of Electricity Delivery &
Energy Reliability (OE) [57558]; State Key Laboratory of Molecular
Engineering of Polymers at Fudan University
FX We acknowledge financial support from the U.S. Department of Energy's
(DOE's) Office of Electricity Delivery & Energy Reliability (OE) (under
Contract No. 57558). We also are grateful for enlightening discussions
with Dr. Imre Gyuk of the DOE-OE Grid Storage Program. H.P. and D.W.
acknowledge financial support from a Visiting Scholarship Fund from the
State Key Laboratory of Molecular Engineering of Polymers at Fudan
University.
NR 48
TC 29
Z9 29
U1 68
U2 284
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 11933
EP 11941
DI 10.1021/acsnano.5b04474
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100042
PM 26498828
ER
PT J
AU Merrill, NA
McKee, EM
Merino, KC
Drummy, LF
Lee, S
Reinhart, B
Ren, Y
Frenkel, AI
Naik, RR
Bedford, NM
Knecht, MR
AF Merrill, Nicholas A.
McKee, Erik M.
Merino, Kyle C.
Drummy, Lawrence F.
Lee, Sungsik
Reinhart, Benjamin
Ren, Yang
Frenkel, Anatoly I.
Naik, Rajesh R.
Bedford, Nicholas M.
Knecht, Marc R.
TI Identifying the Atomic-Level Effects of Metal Composition on the
Structure and Catalytic Activity of Peptide-Templated Materials
SO ACS NANO
LA English
DT Article
DE bimetallic nanostructures; peptide templates; bioinspired; X-ray
analysis; catalysis
ID X-RAY-DIFFRACTION; BIMETALLIC NANOPARTICLES; GOLD NANOPARTICLES;
NANOMATERIAL SYNTHESIS; PDAU NANOPARTICLES; PROTEIN CAGE; PALLADIUM;
HYDROGENATION; FERRITIN; MORPHOGENESIS
AB Bioinspired approaches for the formation of metallic nanomaterials have been extensively employed for a diverse range of applications including diagnostics and catalysis. These materials can often be used under sustainable conditions; however, it is challenging to control the material size, morphology, and composition simultaneously. Here we have employed the R5 peptide, which forms a 3D scaffold to direct the size and linear shape of bimetallic PdAu nanomaterials for catalysis. The materials were prepared at varying Pd:Au ratios to probe optimal compositions to achieve maximal catalytic efficiency. These materials were extensively characterized at the atomic level using transmission electron microscopy, extended X-ray absorption fine structure spectroscopy, and atomic pair distribution function analysis derived from high-energy X-ray diffraction patterns to provide highly resolved structural information. The results confirmed PdAu alloy formation, but also demonstrated that significant surface structural disorder was present. The catalytic activity of the materials was studied for olefin hydrogenation, which demonstrated enhanced reactivity from the bimetallic structures. These results present a pathway to the bioinspired production of multimetallic materials with enhanced properties, which can be assessed via a suite of characterization methods to fully ascertain structure/function relationships.
C1 [Merrill, Nicholas A.; McKee, Erik M.; Merino, Kyle C.; Bedford, Nicholas M.; Knecht, Marc R.] Univ Miami, Dept Chem, Coral Gables, FL 33146 USA.
[Drummy, Lawrence F.; Naik, Rajesh R.; Bedford, Nicholas M.] US Air Force, Mat & Mfg Directorate, Res Lab, Dayton, OH 45433 USA.
[Lee, Sungsik; Reinhart, Benjamin; Ren, Yang] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
[Frenkel, Anatoly I.] Yeshiva Univ, Dept Phys, New York, NY 10016 USA.
[Bedford, Nicholas M.] NIST, Appl Chem & Mat Div, Boulder, CO 80305 USA.
RP Bedford, NM (reprint author), Univ Miami, Dept Chem, 1301 Mem Dr, Coral Gables, FL 33146 USA.
EM nicholas.bedford@nist.gov; knecht@miami.edu
RI Frenkel, Anatoly/D-3311-2011
OI Frenkel, Anatoly/0000-0002-5451-1207
FU National Science Foundation [DMR-1145175]; Air Force Office of
Scientific Research; National Research Council; Division of Chemical
Sciences, Geosciences, and Biosciences within the U.S. Department of
Energy Office of Basic Energy Sciences [DE-FG02-03ER15476]; U.S. DOE
[DE-AC02-06CH11357]
FX This work was supported in part by the National Science Foundation (MRK:
DMR-1145175) and the Air Force Office of Scientific Research (RRN).
N.M.B. acknowledges fellowship support from National Research Council
Associateship award during the initial phases of this work. A.I.F.
acknowledges funding by the Division of Chemical Sciences, Geosciences,
and Biosciences within the U.S. Department of Energy Office of Basic
Energy Sciences, Grant No. DE-FG02-03ER15476. Use of the Advanced Photon
Source, an Office of Science User Facility operated for the U.S.
Department of Energy (DOE) Office of Science by Argonne National
Laboratory, was supported by the U.S. DOE under Contract No.
DE-AC02-06CH11357.
NR 66
TC 5
Z9 5
U1 8
U2 35
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 11968
EP 11979
DI 10.1021/acsnano.5b04665
PG 12
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100046
PM 26497843
ER
PT J
AU Tsai, HZ
Omrani, AA
Coh, S
Oh, H
Wickenburg, S
Son, YW
Wong, D
Riss, A
Jung, HS
Nguyen, GD
Rodgers, GF
Aikawa, AS
Taniguchi, T
Watanabe, K
Zettl, A
Louie, SG
Lu, J
Cohen, ML
Crommie, MF
AF Tsai, Hsin-Zon
Omrani, Arash A.
Coh, Sinisa
Oh, Hyungju
Wickenburg, Sebastian
Son, Young-Woo
Wong, Dillon
Riss, Alexander
Jung, Han Sae
Nguyen, Giang D.
Rodgers, Griffin F.
Aikawa, Andrew S.
Taniguchi, Takashi
Watanabe, Kenji
Zettl, Alex
Louie, Steven G.
Lu, Jiong
Cohen, Marvin L.
Crommie, Michael F.
TI Molecular Self-Assembly in a Poorly Screened Environment: F(4)TCNQ on
Graphene/BN
SO ACS NANO
LA English
DT Article
DE molecular self-assembly; graphene; hexagonal boron nitride (BN);
scanning tunneling microscopy (STM); noncontact atomic force microscopy
(nc-AFM); density functional theory (DFT)
ID SCANNING-TUNNELING-MICROSCOPY; CHARGE-TRANSFER;
TETRAFLUORO-TETRACYANOQUINODIMETHANE; EPITAXIAL GRAPHENE; SURFACE; METAL
AB We report a scanning tunneling microscopy and noncontact atomic force microscopy study of close-packed 20 islands of tetrafluoro-tetracyanoquinodimethane (F(4)TCNQ) molecules at the surface of a graphene layer supported by boron nitride. While F(4)TCNQ molecules are known to form cohesive 3D solids, the intermolecular interactions that are attractive for F(4)TCNQ in 3D are repulsive in 2D. Our experimental observation of cohesive molecular behavior for F(4)TCNQ on graphene is thus unexpected. This self-assembly behavior can be explained by a novel solid formation mechanism that occurs when charged molecules are placed in a poorly screened environment. As negatively charged molecules coalesce, the local work function increases, causing electrons to flow into the coalescing molecular island and increase its cohesive binding energy.
C1 [Tsai, Hsin-Zon; Omrani, Arash A.; Coh, Sinisa; Oh, Hyungju; Wickenburg, Sebastian; Son, Young-Woo; Wong, Dillon; Riss, Alexander; Jung, Han Sae; Nguyen, Giang D.; Rodgers, Griffin F.; Aikawa, Andrew S.; Zettl, Alex; Louie, Steven G.; Lu, Jiong; Cohen, Marvin L.; Crommie, Michael F.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Coh, Sinisa; Oh, Hyungju; Wickenburg, Sebastian; Son, Young-Woo; Zettl, Alex; Louie, Steven G.; Cohen, Marvin L.; Crommie, Michael F.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Son, Young-Woo] Korea Inst Adv Study, Seoul 130722, South Korea.
[Taniguchi, Takashi; Watanabe, Kenji] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan.
[Crommie, Michael F.] Univ Calif Berkeley, Kavli Energy NanoSci Inst, Berkeley, CA 94720 USA.
[Crommie, Michael F.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Lu, Jiong] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore.
[Lu, Jiong] Natl Univ Singapore, Ctr Adv Mat 2D, Singapore 117546, Singapore.
[Lu, Jiong] Natl Univ Singapore, Graphene Res Ctr, Singapore 117546, Singapore.
RP Louie, SG (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM sglouie@berkeley.edu; chmluj@nus.edu.sg; micohen@berkeley.edu;
crommie@berkeley.edu
RI Tsai, Hsin-Zon/J-1682-2016; TANIGUCHI, Takashi/H-2718-2011; WATANABE,
Kenji/H-2825-2011; Lu, Jiong/D-8218-2014; Zettl, Alex/O-4925-2016;
Nguyen, Giang/R-1287-2016
OI Tsai, Hsin-Zon/0000-0003-2097-0170; WATANABE, Kenji/0000-0003-3701-8119;
Lu, Jiong/0000-0002-3690-8235; Zettl, Alex/0000-0001-6330-136X; Nguyen,
Giang/0000-0003-4125-8203
FU Office of Science, Office of Basic Energy Sciences of the U.S.
Department of Energy (DOE) [DE-AC02-05CH11231]; National Science
Foundation [DMR-1206512]; Department of Defense (DoD) [32 CFR 168a];
Swiss National Science Foundation (SNSF) [P2ELP2-151852]; National
Research Foundation, Prime Minister Office, Singapore
[R-144-000-295-281]; Austrian Science Fund (FWF) [J3026-N16]; MEXT Japan
Elemental Strategy Initiative; JSPS [25107004, 25106006]
FX This research was supported by the Director, Office of Science, Office
of Basic Energy Sciences of the U.S. Department of Energy (DOE),
contract no. DE-AC02-05CH11231 Nanomachine program (STM imaging, sample
synthesis, theory) and Molecular Foundry (graphene growth, growth
characterization), and by National Science Foundation grant DMR-1206512
(device characterization). Computational resources were provided by the
DOE at Lawrence Berkeley National Laboratory's NERSC facility. D.W. was
supported by the Department of Defense (DoD) through the National
Defense Science & Engineering Graduate Fellowship (NDSEG) Program, 32
CFR 168a. A.A.O. acknowledges support from the Swiss National Science
Foundation (SNSF) Postdoctoral Research Fellowship under Grant No.
P2ELP2-151852. J.L. acknowledges fellowship support from the National
Research Foundation, Prime Minister Office, Singapore, under its Medium
Sized Centre Programme and CRP award no. R-144-000-295-281. A.R.
acknowledges fellowship support by the Austrian Science Fund (FWF):
J3026-N16. K.W. and T.T. acknowledge support from the MEXT Japan
Elemental Strategy Initiative (synthesis of BN crystals) and JSPS
Grant-in-Aid for Scientific Research on Innovative Areas no. 25107004
(characterization of BN crystals). T.T. acknowledges support from a JSPS
Grant-in-Aid for Scientific Research on Innovative Areas no. 25106006
(development of high pressure BN synthesis instrumentation). We
acknowledge Vitor M. Pereira for useful discussions.
NR 38
TC 4
Z9 4
U1 17
U2 75
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 12168
EP 12173
DI 10.1021/acsnano.5b05322
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100065
PM 26482218
ER
PT J
AU Xia, M
Yin, KB
Capellini, G
Niu, G
Gong, YJ
Zhou, W
Ajayan, PM
Xie, YH
AF Xia, Ming
Yin, Kuibo
Capellini, Giovanni
Niu, Gang
Gong, Yongji
Zhou, Wu
Ajayan, Pulickel M.
Xie, Ya-Hong
TI Spectroscopic Signatures of AA ' and AB Stacking of Chemical Vapor
Deposited Bilayer MoS2
SO ACS NANO
LA English
DT Article
DE molybdenum disulfide; bilayer stacking; Au nanopyramids;
photoluminescence; resonance Raman
ID MOLYBDENUM-DISULFIDE; MONOLAYER MOS2; ELECTRONIC-STRUCTURE; VALLEY
POLARIZATION; RAMAN-SCATTERING; PHASE GROWTH; GRAPHENE; SPIN;
PHOTOLUMINESCENCE; SYMMETRY
AB Prominent resonance Raman and photoluminescence spectroscopic differences between AA' and AB stacked bilayer molybdenum disulfide (MoS2) grown by chemical vapor deposition are reported. Bilayer MoS2 islands consisting of the two stacking orders were obtained under identical growth conditions. Resonance Raman and photoluminescence spectra of AA' and AB stacked bilayer MoS2 were obtained on Au nanopyramid surfaces under strong plasmon resonance. Both resonance Raman and photoluminescence spectra show distinct features indicating clear differences in interlayer interaction between these two phases. The implication of these findings on device applications based on spin and valley degrees of freedom will be discussed.
C1 [Xia, Ming; Xie, Ya-Hong] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA.
[Yin, Kuibo; Gong, Yongji; Ajayan, Pulickel M.] Rice Univ, Dept Mat Sci & NanoEngngn, Houston, TX 77005 USA.
[Yin, Kuibo] Southeast Univ, SEU FEI Nanopico Ctr, Key Lab MEMS, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China.
[Yin, Kuibo; Zhou, Wu] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Capellini, Giovanni; Niu, Gang] Innovat High Performance, D-15236 Frankfurt, Germany.
RP Xie, YH (reprint author), Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA.
EM yhx@ucla.edu
RI Zhou, Wu/D-8526-2011; Xia, Ming/B-1014-2016; Yin, Kuibo/G-5812-2011;
Gong, Yongji/L-7628-2016
OI Zhou, Wu/0000-0002-6803-1095; Xia, Ming/0000-0001-6028-4437; Yin,
Kuibo/0000-0001-5268-6807;
FU FAME, one of six centers of STARnet, a Semiconductor Research
Corporation program - MARCO; DARPA; Alexander von Humboldt Foundation;
U.S. Department of Energy, Office of Science, Basic Energy Science,
Materials Sciences and Engineering Division; ORNL's Center for Nanophase
Materials Sciences (CNMS), which is a DOE Office of Science User
Facility; China Scholarship Council [201208320383]; National Natural
Science Foundation of China [11204034]; Natural Science Foundation of
Jiangsu Province [BK2012123]
FX This work was supported in part by FAME, one of six centers of STARnet,
a Semiconductor Research Corporation program sponsored by MARCO and
DARPA. Y.-H.X. acknowledges the support from Alexander von Humboldt
Foundation Research Award. Electron microscopy study was supported in
part by the U.S. Department of Energy, Office of Science, Basic Energy
Science, Materials Sciences and Engineering Division (K.Y, and W.Z), and
through a user project at ORNL's Center for Nanophase Materials Sciences
(CNMS), which is a DOE Office of Science User Facility. K.Y.
acknowledges the scholarship from China Scholarship Council (No.
201208320383) and the support from National Natural Science Foundation
of China (No. 11204034) and the Natural Science Foundation of Jiangsu
Province (No. BK2012123).
NR 46
TC 9
Z9 9
U1 12
U2 64
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 12246
EP 12254
DI 10.1021/acsnano.5b05474
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100074
PM 26536495
ER
PT J
AU Susner, MA
Belianinov, A
Borisevich, A
He, Q
Chyasnavichyus, M
Demir, H
Sholl, DS
Ganesh, P
Abernathy, DL
McGuire, MA
Maksymovych, P
AF Susner, Michael A.
Belianinov, Alex
Borisevich, Albina
He, Qian
Chyasnavichyus, Marius
Demir, Hakan
Sholl, David S.
Ganesh, Panchapakesan
Abernathy, Douglas L.
McGuire, Michael A.
Maksymovych, Petro
TI High-T-c Layered Ferrielectric Crystals by Coherent Spinodal
Decomposition
SO ACS NANO
LA English
DT Article
DE 2D ferrielectric; transition metal thiophosphate; spinodal
decomposition; 2D heterostructures; chalcogenides
ID PIEZORESPONSE FORCE MICROSCOPY; TEMPERATURE-DEPENDENCE;
DIELECTRIC-PROPERTIES; PHASE-TRANSITIONS; HETEROSTRUCTURES;
FERROELECTRICS; TRANSPORT; CUINP2S6; PRESSURE; PBTIO3
AB Research in the rapidly developing field of 2D electronic materials has thus far been focused on metallic and semiconducting materials. However, complementary dielectric materials such as nonlinear dielectrics are needed to enable realistic device architectures. Candidate materials require tunable dielectric properties and pathways for heterostructure assembly. Here we report on a family of cation-deficient transition metal thiophosphates whose unique chemistry makes them a viable prospect for these applications. In these materials, naturally occurring ferrielectric heterostructures composed of centrosymmetric In4/3P2S6 and ferrielectrically active CuInP2S6 are realized by controllable chemical phase separation in van der Waals bonded single crystals. CuInP2S6 by itself is a layered ferrielectric with a ferrielectric transition temperature (T-c) just over room temperature, which rapidly decreases with homogeneous doping. Surprisingly, in our composite materials, the ferrielectric T-c of the polar CuInP2S6 phase increases. This effect is enabled by unique spinodal decomposition that retains the overall van der Waals layered morphology of the crystal, but chemically separates CuInP2S6 and In4/3P2S6 within each layer. The average spatial periodicity of the distinct chemical phases can be finely controlled by altering the composition and/or synthesis conditions. One intriguing prospect for such layered spinodal alloys is large volume synthesis of 2D in-plane heterostructures with periodically alternating polar and nonpolar phases.
C1 [Susner, Michael A.; Borisevich, Albina; He, Qian; McGuire, Michael A.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Belianinov, Alex; Chyasnavichyus, Marius; Ganesh, Panchapakesan; Maksymovych, Petro] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Abernathy, Douglas L.] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
[Demir, Hakan; Sholl, David S.] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA.
RP Susner, MA (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM susnerma@ornl.gov; maksymovychp@ornl.gov
RI Ganesh, Panchapakesan/E-3435-2012; McGuire, Michael/B-5453-2009;
Maksymovych, Petro/C-3922-2016; Abernathy, Douglas/A-3038-2012;
Chyasnavichyus, Marius/D-8173-2016; Borisevich, Albina/B-1624-2009;
Susner, Michael/B-1666-2013; He, Qian/J-1277-2014
OI Ganesh, Panchapakesan/0000-0002-7170-2902; McGuire,
Michael/0000-0003-1762-9406; Maksymovych, Petro/0000-0003-0822-8459;
Abernathy, Douglas/0000-0002-3533-003X; Chyasnavichyus,
Marius/0000-0003-3640-7200; Borisevich, Albina/0000-0002-3953-8460;
Susner, Michael/0000-0002-1211-8749;
FU Laboratory Directed Research and Development Program of Oak Ridge
National Laboratory; Scientific User Facilities Division, Office of
Basic Energy Sciences, U.S. Department of Energy
FX Research was sponsored by the Laboratory Directed Research and
Development Program of Oak Ridge National Laboratory, managed by
UT-Battelle, LLC, for the U.S. Department of Energy (P.M., P.G., MC.,
H.D, D.L.A., A.B., A.Y.B., Q.H, M.A.S, and M.A.M.). PFM measurements
were carried out at the Center for Nanophase Materials Sciences, which
is sponsored at Oak Ridge National Laboratory by the Scientific User
Facilities Division, Office of Basic Energy Sciences, U.S. Department of
Energy. A portion of this article is based upon work performed using
computational resources supported by the University of Tennessee and Oak
Ridge National Laboratory's Joint Institute for Computational Sciences.
Any opinions, findings, and conclusions or recommendations expressed in
this material are those of the author(s) and do not necessarily reflect
the views of the University of Tennessee, Oak Ridge National Laboratory,
or the Joint Institute for Computational Sciences.
NR 45
TC 3
Z9 3
U1 14
U2 29
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 12365
EP 12373
DI 10.1021/acsnano.5b05682
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100088
PM 26566107
ER
PT J
AU Ackerman, PJ
Mundoor, H
Smalyukh, II
van de Lagemaat, J
AF Ackerman, Paul J.
Mundoor, Haridas
Smalyukh, Ivan I.
van de Lagemaat, Jao
TI Plasmon-Exciton Interactions Probed Using Spatial Coentrapment of
Nanoparticles by Topological Singularities
SO ACS NANO
LA English
DT Article
DE plasmonics; semiconductor nanocrystals; metal nanoparticles; topological
singularities; blinking
ID SINGLE QUANTUM DOTS; LIQUID-CRYSTALS; SEMICONDUCTOR NANOCRYSTALS;
BLINKING SUPPRESSION; HETEROSTRUCTURES; PARTICLES; FILMS; PBS
AB We study plasmon-exciton interaction by using topological singularities to spatially confine, selectively deliver, cotrap and optically probe colloidal semiconductor and plasmonic nanoparticles. The interaction is monitored in a single quantum system in the bulk of a liquid crystal medium where nanoparticles are manipulated and nanoconfined far from dielectric interfaces using laser tweezers and topological configurations containing singularities. When quantum dot-in-a-rod particles are spatially colocated with a plasmonic gold nanoburst particle in a topological singularity core, its fluorescence increases because blinking is significantly suppressed and the radiative decay rate increases by nearly an order of magnitude owing to the Purcell effect. We argue that the blinking suppression is the result of the radiative rate change that mitigates Auger recombination and quantum dot ionization, consequently reducing nonradiative recombination. Our work demonstrates that topological singularities are an effective platform for studying and controlling plasmon-exciton interactions.
C1 [Ackerman, Paul J.; Mundoor, Haridas; Smalyukh, Ivan I.; van de Lagemaat, Jao] Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
[Ackerman, Paul J.; Smalyukh, Ivan I.] Univ Colorado, Dept Elect Comp & Energy Engn, Boulder, CO 80309 USA.
[van de Lagemaat, Jao] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Smalyukh, Ivan I.] Univ Colorado, Liquid Crystal Mat Res Ctr, Boulder, CO 80309 USA.
[Smalyukh, Ivan I.] Univ Colorado, Mat Sci & Engn Program, Boulder, CO 80309 USA.
[Smalyukh, Ivan I.; van de Lagemaat, Jao] Natl Renewable Energy Lab, Renewable & Sustainable Energy Inst, Boulder, CO 80309 USA.
[Smalyukh, Ivan I.; van de Lagemaat, Jao] Univ Colorado, Boulder, CO 80309 USA.
RP Smalyukh, II (reprint author), Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
EM ivan.smalyukh@colorado.edu; jao.vandelagemaat@nrel.gov
RI Smalyukh, Ivan/C-2955-2011; Mundoor, Haridas/L-9948-2016
OI Smalyukh, Ivan/0000-0003-3444-1966; Mundoor, Haridas/0000-0001-6589-6475
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences of the US Department of Energy
[DE-AC36-08GO28308]; National Renewable Energy Laboratory; NSF
[DMR-1410735]
FX We thank C. Schoen and Nanopartz Inc. for providing NBs as well as J. M.
Luther for providing QRs used in studies presented in this work. We
acknowledge technical assistance of T. Lee and B. Senyuk. I.I.S. is
grateful for the hospitality of NREL during his sabbatical stay. We
acknowledge support of the Division of Chemical Sciences, Geosciences,
and Biosciences, Office of Basic Energy Sciences of the US Department of
Energy under Contract No. DE-AC36-08GO28308 with the National Renewable
Energy Laboratory (P.J.A., J.v.d.L and I.I.S. during his sabbatical
leave) and also partial support of the NSF grant DMR-1410735 (H.M. and
I.I.S.).
NR 45
TC 2
Z9 2
U1 7
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 12392
EP 12400
DI 10.1021/acsnano.5b05715
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100091
PM 26567626
ER
PT J
AU Ievlev, AV
Susner, MA
McGuire, MA
Maksymovych, P
Kalinin, SV
AF Ievlev, Anton V.
Susner, Michael A.
McGuire, Michael A.
Maksymovych, Petro
Kalinin, Sergei V.
TI Quantitative Analysis of the Local Phase Transitions Induced by Laser
Heating
SO ACS NANO
LA English
DT Article
DE ferroelectric; domain structure; scanning probe microscopy;
piezoresponse forcr microscopy; Raman spectroscopy; phase transition
ID SCANNING PROBE MICROSCOPY; FERROELECTRIC THIN-FILMS; ATOMIC-FORCE
MICROSCOPY; THERMAL-CONDUCTIVITY; CUINP2S6; CHARGE; SPECTROSCOPY
AB Functional imaging enabled by scanning probe microscopy (SPM) allows investigations of nanoscale material properties under a wide range of external conditions, including temperature. However, a number of shortcomings preclude the use of the most common material heating techniques, thereby limiting precise temperature measurements. Here we discuss an approach to local laser heating on the micron scale and its applicability for SPM. We applied local heating coupled with piezoresponse force microscopy and confocal Raman spectroscopy for nanoscale investigations of a ferroelectric-paraelectric phase transition in the copper indium thiophosphate layered ferroelectric. Bayesian linear unmixing applied to experimental results allowed extraction of the Raman spectra of different material phases and enabled temperature calibration in the heated region. The obtained results enable a systematic approach for studying temperature-dependent material functionalities in heretofore unavailable temperature regimes.
C1 [Ievlev, Anton V.; Maksymovych, Petro; Kalinin, Sergei V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Ievlev, Anton V.; Maksymovych, Petro; Kalinin, Sergei V.] Oak Ridge Natl Lab, Inst Funct Imaging Mat, Oak Ridge, TN 37831 USA.
[Susner, Michael A.; McGuire, Michael A.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Ievlev, AV (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM ievlevav@ornl.gov
RI McGuire, Michael/B-5453-2009; Maksymovych, Petro/C-3922-2016; Susner,
Michael/B-1666-2013; Ievlev, Anton/H-3678-2012
OI McGuire, Michael/0000-0003-1762-9406; Maksymovych,
Petro/0000-0003-0822-8459; Susner, Michael/0000-0002-1211-8749; Ievlev,
Anton/0000-0003-3645-0508
FU Laboratory Directed Research and Development program at the Oak Ridge
National Laboratory
FX A portion of this research (AVI and SVK) was conducted at the Center for
Nanophase Materials Sciences, which is a DOE Office of Science User
Facility. Samples growth and preparation (PM, MAS and MAM) were
sponsored by the Laboratory Directed Research and Development program at
the Oak Ridge National Laboratory.
NR 47
TC 3
Z9 3
U1 9
U2 31
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 12442
EP 12450
DI 10.1021/acsnano.5b05818
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100097
PM 26536387
ER
PT J
AU Jia, Q
Ramaswamy, N
Hafiz, H
Tylus, U
Strickland, K
Wu, G
Barbiellini, B
Bansil, A
Holby, EF
Zelenay, P
Mukerjee, S
AF Jia, Qingying
Ramaswamy, Nagappan
Hafiz, Hasnain
Tylus, Urszula
Strickland, Kara
Wu, Gang
Barbiellini, Bernardo
Bansil, Arun
Holby, Edward F.
Zelenay, Piotr
Mukerjee, Sanjeev
TI Experimental Observation of Redox-Induced Fe-N Switching Behavior as a
Determinant Role for Oxygen Reduction Activity
SO ACS NANO
LA English
DT Article
DE non-PGM catalysts; oxygen reduction reaction; active sites; redox
transition; dynamic structure
ID HIGH AREA CARBON; RAY-ABSORPTION SPECTROSCOPY; DENSITY-FUNCTIONAL
THEORY; FULL MULTIPLE-SCATTERING; NEAR-EDGE STRUCTURE; PEM FUEL-CELL;
FE/N/C-CATALYSTS; MOSSBAUER-SPECTROSCOPY; METAL ELECTROCATALYST; IRON
PORPHYRINS
AB The commercialization of electrochemical energy conversion and storage devices relies largely upon the development of highly active catalysts based on abundant and inexpensive materials. Despite recent achievements in this respect, further progress is hindered by the poor understanding of the nature of active sites and reaction mechanisms. Herein, by characterizing representative iron-based catalysts under reactive conditions, we identify three Fe-N-4-like catalytic centers with distinctly different Fe-N switching behaviors (Fe moving toward or away from the N-4-plane) during the oxygen reduction reaction (ORR), and show that their ORR activities are essentially governed by the dynamic structure associated with the Fe2+/3+ redox transition, rather than the static structure of the bare sites. Our findings reveal the structural origin of the enhanced catalytic activity of pyrolyzed Fe-based catalysts compared to nonpyrolyzed Fe-macrocycle compounds. More generally, the fundamental insights into the dynamic nature of transition-metal compounds during electron-transfer reactions will potentially guide rational design of these materials for broad applications.
C1 [Jia, Qingying; Ramaswamy, Nagappan; Tylus, Urszula; Strickland, Kara; Mukerjee, Sanjeev] Northeastern Univ, Dept Chem & Chem Biol, Boston, MA 02115 USA.
[Hafiz, Hasnain; Barbiellini, Bernardo; Bansil, Arun] Northeastern Univ, Dept Phys, Boston, MA 02115 USA.
[Holby, Edward F.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
[Tylus, Urszula; Wu, Gang; Zelenay, Piotr] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM USA.
RP Mukerjee, S (reprint author), Northeastern Univ, Dept Chem & Chem Biol, Boston, MA 02115 USA.
EM s.mukerjee@neu.edu
RI Wu, Gang/E-8536-2010;
OI Wu, Gang/0000-0003-4956-5208; Holby, Edward/0000-0001-8419-6298
FU U.S. Department of Energy, EERE [DE-EE-0000459]; U.S. Department of
Energy, Office of Basic Energy Sciences; Center for Synchrotron
Biosciences [P30-EB-009998]; National Institute of Biomedical Imaging
and Bioengineering (NBIB); U.S. Department of Energy (DOE), Office of
Science, Basic Energy Sciences [DE-FG02-07ER46352]; DOE
[DE-AC02-05CH11231]; DOE EFRC: Center for the Computational Design of
Functional Layered Materials (CCDM) [DE-SC0012575]
FX The authors deeply appreciate financial assistance from the U.S.
Department of Energy, EERE (DE-EE-0000459). Use of the National
Synchrotron Light Source (beamline X3B), Brookhaven National Laboratory
(BNL), was supported by the U.S. Department of Energy, Office of Basic
Energy Sciences. This publication was made possible by the Center for
Synchrotron Biosciences grant, P30-EB-009998, from the National
Institute of Biomedical Imaging and Bioengineering (NBIB). Support from
beamline personnel Dr. Erik Farquhar and Mark Chance (X3B) are
gratefully acknowledged. The computational work at Northeastern
University was supported by the U.S. Department of Energy (DOE), Office
of Science, Basic Energy Sciences Grant Number DE-FG02-07ER46352 (core
research), and benefited from Northeastern University's Advanced
Scientific Computation Center (ASCC), the NERSC supercomputing center
through DOE grant number DE-AC02-05CH11231, and support (applications to
layered materials) from the DOE EFRC: Center for the Computational
Design of Functional Layered Materials (CCDM) under DE-SC0012575.
NR 55
TC 38
Z9 39
U1 46
U2 159
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2015
VL 9
IS 12
BP 12496
EP 12505
DI 10.1021/acsnano.5b05984
PG 10
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA CZ7LE
UT WOS:000367280100103
PM 26566192
ER
PT J
AU Jeong, K
Slack, CC
Vassiliou, CC
Dao, P
Gomes, MD
Kennedy, DJ
Truxal, AE
Sperling, LJ
Francis, MB
Wemmer, DE
Pines, A
AF Jeong, Keunhong
Slack, Clancy C.
Vassiliou, Christophoros C.
Dao, Phuong
Gomes, Muller D.
Kennedy, Daniel J.
Truxal, Ashley E.
Sperling, Lindsay J.
Francis, Matthew B.
Wemmer, David E.
Pines, Alexander
TI Investigation of DOTA-Metal Chelation Effects on the Chemical Shift of
Xe-129
SO CHEMPHYSCHEM
LA English
DT Article
DE cryptophane; DOTA; metal-ion sensors; NMR spectroscopy; xenon
ID HYPERPOLARIZED XENON; CRYPTOPHANE CAGES; NMR; IONS; BIOSENSOR; MRI;
SENSOR; SPECTROSCOPY; COMPLEXES; CHEMISTRY
AB Recent work has shown that xenon chemical shifts in cryptophane-cage sensors are affected when tethered chelators bind to metals. Here, we explore the xenon shifts in response to a wide range of metal ions binding to diastereomeric forms of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) linked to cryptophane-A. The shifts induced by the binding of Ca2+, Cu2-, Ce3+, Zn2+, Cd2+, Ni2+, Co2+, Cr2+, Fe3-, and Hg2+ are distinct. In addition, the different responses of the diastereomers for the same metal ion indicate that shifts are affected by partial folding with a correlation between the expected coordination number of the metal in the DOTA complex and the chemical shift of Xe-129. These sensors may be used to detect and quantify many important metal ions, and a better understanding of the basis for the induced shifts could enhance future designs.
C1 [Jeong, Keunhong; Slack, Clancy C.; Vassiliou, Christophoros C.; Dao, Phuong; Gomes, Muller D.; Kennedy, Daniel J.; Truxal, Ashley E.; Francis, Matthew B.; Wemmer, David E.; Pines, Alexander] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Jeong, Keunhong; Slack, Clancy C.; Vassiliou, Christophoros C.; Dao, Phuong; Gomes, Muller D.; Kennedy, Daniel J.; Truxal, Ashley E.; Francis, Matthew B.; Pines, Alexander] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Wemmer, David E.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Sperling, Lindsay J.] Santa Clara Univ, Dept Chem & Biochem, Santa Clara, CA 95053 USA.
RP Pines, A (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM pines@berkeley.edu
FU U.S. Department of Energy, Office of Science, Basic Energy Sciences,
Materials Sciences, and Engineering Division [DE-AC02-05CH11231];
Republic of Korea Army; National Science Foundation
FX This work was supported by the U.S. Department of Energy, Office of
Science, Basic Energy Sciences, Materials Sciences, and Engineering
Division, under Contract No. DE-AC02-05CH11231. K.J. acknowledges a
fellowship from the Republic of Korea Army. C.C.S. acknowledges a
graduate fellowship through the National Science Foundation.
NR 34
TC 1
Z9 1
U1 6
U2 17
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1439-4235
EI 1439-7641
J9 CHEMPHYSCHEM
JI ChemPhysChem
PD DEC 1
PY 2015
VL 16
IS 17
BP 3573
EP 3577
DI 10.1002/cphc.201500806
PG 5
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA CZ8BJ
UT WOS:000367324700002
PM 26376768
ER
PT J
AU Shakourian-Fard, M
Kamath, G
Sankaranarayanan, SKRS
AF Shakourian-Fard, Mehdi
Kamath, Ganesh
Sankaranarayanan, Subramanian K. R. S.
TI Electronic Structure Insights into the Solvation of Magnesium Ions with
Cyclic and Acyclic Carbonates
SO CHEMPHYSCHEM
LA English
DT Article
DE computational chemistry; electrochemistry; electrolytes; energy storage;
solvation free energy
ID LIQUID ELECTROLYTES; MOLECULAR-DYNAMICS; BATTERIES; CATIONS; ENERGIES;
COMPLEX; LITHIUM; SODIUM; FORCE; LI+
AB A computational framework to rank the solvation behavior of Mg2+ in carbonates by using molecular dynamics simulations and density functional theory is reported. Based on the binding energies and enthalpies of solvation calculated at the M06-2X/6-311++ G(d,p) level of theory and the free energies of solvation from ABF-MD simulations, we find that ethylene carbonate (EC) and the ethylene carbonate: propylene carbonate (EC: PC) binary mixture are the best carbonate solvents for interacting with Mg2+. Natural bond orbital and quantum theory of atoms in molecules analyses support the thermochemistry calculations with the highest values of charge transfer, pertur-bative stabilization energies, electron densities, and Wiberg bond indices being observed in the Mg2+(EC) and Mg2+ (EC:PC) complexes. The plots of the noncovalent interactions indicate that those responsible for the formation of Mg2+ carbonate complexes are strong-to-weak attractive interactions, depending on the regions that are interacting. Finally, density of state calculations indicate that the interactions between Mg2+ and the carbonate solvents affects the HOMO and LUMO states of all carbonate solvents and moves them to more negative energy values.
C1 [Shakourian-Fard, Mehdi; Kamath, Ganesh] Univ Missouri, Dept Chem, Columbia, MO 65211 USA.
[Sankaranarayanan, Subramanian K. R. S.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Shakourian-Fard, M (reprint author), Univ Missouri, Dept Chem, Columbia, MO 65211 USA.
EM m_shakori1361@yahoo.com; gkamath9173@gmail.com; skrssank@anl.gov
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]; Office of Science of the U.S. Department
of Energy [DE-AC02-05CH11231]
FX Use of the Center for Nanoscale Materials, an Office of Science user
facility, was supported by the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357. This research used resources of the National Energy
Research Scientific Computing Center, a DOE Office of Science User
Facility supported by the Office of Science of the U.S. Department of
Energy under Contract No. DE-AC02-05CH11231.
NR 38
TC 2
Z9 2
U1 6
U2 24
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1439-4235
EI 1439-7641
J9 CHEMPHYSCHEM
JI ChemPhysChem
PD DEC 1
PY 2015
VL 16
IS 17
BP 3607
EP 3617
DI 10.1002/cphc.201500590
PG 11
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA CZ8BJ
UT WOS:000367324700009
PM 26395020
ER
PT J
AU Zhong, J
Zhang, H
Yan, J
Gong, X
AF Zhong, Jian
Zhang, Huan
Yan, Juan
Gong, Xiao
TI Effect of nanofiber orientation of electrospun nanofibrous scaffolds on
cell growth and elastin expression of muscle cells
SO COLLOIDS AND SURFACES B-BIOINTERFACES
LA English
DT Article
DE Elastin; Electrospinning technique; Nanofiber orientation; Scaffolds;
Smooth muscle cell
ID BIOMIMETIC EXTRACELLULAR-MATRIX; STEM-CELLS; FIBERS; FABRICATION;
MEMBRANES; DELIVERY; FUNCTIONALIZATION; NANOPARTICLES; PROLIFERATION;
DISPERSIONS
AB Tissue regeneration after smooth muscle tissue injury is a pivotal issue in tissue engineering. Good artificial scaffolds to continuously form long thin spindle-shaped smooth muscle cells in the damaged muscle tissues are important for tissue regeneration. In this work, poly(lactide-co-glycolide) (PLGA) and poly(epsilon-caprolactone) (PCL) were used to fabricate aligned or random electrospun nanofibrous scaffolds (ENSs) by using electrospinning technique. The cell growth and elastin expression of human vascular smooth muscle cells (HVSMCs) on these membranes were analyzed. Smooth PLGA/PCL film was used as control. The experimental results showed that the aligned ENS could maintain cell shapes of HVSMCs during the culture process. During the HVSMCs proliferation process, elastin expression firstly increase due to cell proliferation, and then decrease due to elastin degradation by elastase secreted by the cells. All these results suggest that aligned PLGA/PCL ENS can be a promising candidate for cell regeneration after smooth muscle tissue injury. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Zhong, Jian; Yan, Juan] Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China.
[Zhang, Huan] Iowa State Univ, Ames Lab, Ames, IA 50010 USA.
[Gong, Xiao] Univ Pittsburgh, Swanson Sch Engn, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA.
RP Zhong, J (reprint author), Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China.
EM jzhong@shou.edu.cn
RI Zhong, Jian/B-3743-2015; Zhang, Huan/C-8636-2017
OI Zhong, Jian/0000-0002-2475-3221; Zhang, Huan/0000-0002-8702-8684
FU National High Technology Research and Development Program of China (863
Program) [2013AA032203]; National Natural Science Foundation of China
[51203024]; Special Fund for Talents in Minhang District of Shanghai
FX This research has been supported by research grants from the National
High Technology Research and Development Program of China (863 Program
2013AA032203), the National Natural Science Foundation of China
(51203024), and the Special Fund for Talents in Minhang District of
Shanghai (2012).
NR 59
TC 3
Z9 3
U1 7
U2 30
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0927-7765
EI 1873-4367
J9 COLLOID SURFACE B
JI Colloid Surf. B-Biointerfaces
PD DEC 1
PY 2015
VL 136
BP 772
EP 778
DI 10.1016/j.colsurfb.2015.10.017
PG 7
WC Biophysics; Chemistry, Physical; Materials Science, Biomaterials
SC Biophysics; Chemistry; Materials Science
GA CZ9HH
UT WOS:000367408100094
PM 26520049
ER
PT J
AU Iyer, GC
Edmonds, JA
Fawcett, AA
Hultman, NE
Alsalam, J
Asrar, GR
Calvin, KV
Clarke, LE
Creason, J
Jeong, M
Kyle, P
McFarland, J
Mundra, A
Patel, P
Shi, WJ
McJeon, HC
AF Iyer, Gokul C.
Edmonds, James A.
Fawcett, Allen A.
Hultman, Nathan E.
Alsalam, Jameel
Asrar, Ghassem R.
Calvin, Katherine V.
Clarke, Leon E.
Creason, Jared
Jeong, Minji
Kyle, Page
McFarland, James
Mundra, Anupriya
Patel, Pralit
Shi, Wenjing
McJeon, Haewon C.
TI The contribution of Paris to limit global warming to 2 degrees C
SO ENVIRONMENTAL RESEARCH LETTERS
LA English
DT Article
DE conference of Parties; climate change; mitigation; policy; integrated
assessment model; INDC; energy
ID CLIMATE-CHANGE MITIGATION; INTEGRATED ASSESSMENT; CO2 CONCENTRATIONS;
CARBON CAPTURE; LAND-USE; ENERGY; TECHNOLOGIES; SCENARIOS;
TRANSPORTATION; STABILIZATION
AB The international community has set a goal to limit global warming to 2 degrees C. Limiting global warming to 2 degrees C is a challenging goal and will entail a dramatic transformation of the global energy system, largely complete by 2040. As part of the work toward this goal, countries have been submitting their Intended Nationally Determined Contributions (INDCs) to the United Nations Framework Convention on Climate Change, indicating their emissions reduction commitments through 2025 or 2030, in advance of the 21st Conference of the Parties (COP21) in Paris in December 2015. In this paper, we use the Global Change Assessment Model (GCAM) to analyze the near versus long-term energy and economic-cost implications of these INDCs. The INDCs imply near-term actions that reduce the level of mitigation needed in the post-2030 period, particularly when compared with an alternative path in which nations are unable to undertake emissions mitigation until after 2030. We find that the latter case could require up to 2300 GW of premature retirements of fossil fuel power plants and up to 2900 GW of additional low-carbon power capacity installations within a five-year period of 2031-2035. INDCs have the effect of reducing premature retirements and new-capacity installations after 2030 by 50% and 34%, respectively. However, if presently announced INDCs were strengthened to achieve greater near-term emissions mitigation, the 2031-2035 transformation could be tempered to require 84% fewer premature retirements of power generation capacity and 56% fewer new-capacity additions. Our results suggest that the INDCs delivered for COP21 in Paris will have important contributions in reducing the challenges of achieving the goal of limiting global warming to 2 degrees C.
C1 [Iyer, Gokul C.; Edmonds, James A.; Asrar, Ghassem R.; Calvin, Katherine V.; Clarke, Leon E.; Jeong, Minji; Kyle, Page; Mundra, Anupriya; Patel, Pralit; Shi, Wenjing; McJeon, Haewon C.] Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD 20740 USA.
[Fawcett, Allen A.; Alsalam, Jameel; Creason, Jared; McFarland, James] US EPA, Washington, DC 20460 USA.
[Hultman, Nathan E.] Univ Maryland, Sch Publ Policy, College Pk, MD 20742 USA.
RP McJeon, HC (reprint author), Pacific NW Natl Lab, Joint Global Change Res Inst, 5825 Univ Res Court,Suite 3500, College Pk, MD 20740 USA.
EM haewon.mcjeon@pnnl.gov
FU U.S. Department of State [IAA 19318814Y0012]; U.S. Environmental
Protection Agency [IAADW-8992406301]; William and Flora Hewlett
Foundation
FX Analysis of mitigation potential and levels of national mitigation
action related to the conclusions of this paper was supported by the
U.S. Department of State (IAA 19318814Y0012) and the U.S. Environmental
Protection Agency (IAADW-8992406301). NEH was supported by the William
and Flora Hewlett Foundation. The assessments of newly submitted INDCs
are continuously updated at http://www.globalchange.umd.edu/. The views
and opinions expressed in this paper are those of the authors alone and
do not necessarily state or reflect those of the United States
Government, the Department of State, or the Environmental Protection
Agency, and no official endorsement should be inferred.
NR 37
TC 6
Z9 6
U1 17
U2 66
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1748-9326
J9 ENVIRON RES LETT
JI Environ. Res. Lett.
PD DEC
PY 2015
VL 10
IS 12
AR 125002
DI 10.1088/1748-9326/10/12/125002
PG 10
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA CZ7NO
UT WOS:000367286300034
ER
PT J
AU Momany, M
Di Pietro, A
Alexander, WG
Barker, BM
Harb, OS
Kamoun, S
Martin, F
Pires, JC
Stajich, JE
Thomma, BPHJ
Unruh, S
AF Momany, Michelle
Di Pietro, Antonio
Alexander, William G.
Barker, Bridget M.
Harb, Omar S.
Kamoun, Sophien
Martin, Francis
Pires, J. Chris
Stajich, Jason E.
Thomma, Bart P. H. J.
Unruh, Sarah
TI Meeting Report: Fungal Genomics Meets Social Media: Highlights of the
28th Fungal Genetics Conference at Asilomar
SO G3-GENES GENOMES GENETICS
LA English
DT Article
C1 [Momany, Michelle] Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA.
[Di Pietro, Antonio] Univ Cordoba, Dept Genet, E-14071 Cordoba, Spain.
[Alexander, William G.] Univ Wisconsin, Lab Genet, DoE Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
[Barker, Bridget M.] TGen North, Flagstaff, AZ 86001 USA.
[Harb, Omar S.] Univ Penn, Dept Biol, Eukaryot Pathogen Databases, Philadelphia, PA 19104 USA.
[Kamoun, Sophien] Sainsbury Lab, Norwich NR4 7UH, Norfolk, England.
[Martin, Francis] Univ Lorraine Interact Arbre Microorganismes, UMR INRA, Lab Excellence ARBRE, F-54280 Champenoux, France.
[Pires, J. Chris; Unruh, Sarah] Univ Missouri, Div Biol Sci, Columbia, MO 65211 USA.
[Stajich, Jason E.] Univ Calif Riverside, Dept Plant Pathol & Microbiol, Riverside, CA 92521 USA.
[Thomma, Bart P. H. J.] Wageningen Univ, Lab Phytopathol, NL-6708 WG Wageningen, Netherlands.
RP Momany, M (reprint author), Univ Georgia, Dept Plant Biol, 2502 Miller Plant Sci, Athens, GA 30602 USA.
EM mmomany@uga.edu
RI Di Pietro, Antonio/K-9220-2014; Momany, Michelle/L-2327-2016; Kamoun,
Sophien/B-3529-2009; Stajich, Jason/C-7297-2008;
OI Di Pietro, Antonio/0000-0001-5930-5763; Kamoun,
Sophien/0000-0002-0290-0315; Stajich, Jason/0000-0002-7591-0020; Harb,
Omar/0000-0003-4446-6200; Barker, Bridget/0000-0002-3439-4517; Momany,
Michelle/0000-0001-7110-063X
NR 0
TC 2
Z9 2
U1 0
U2 2
PU GENETICS SOCIETY AMERICA
PI BETHESDA
PA 9650 ROCKVILLE AVE, BETHESDA, MD 20814 USA
SN 2160-1836
J9 G3-GENES GENOM GENET
JI G3-Genes Genomes Genet.
PD DEC
PY 2015
VL 5
IS 12
BP 2523
EP 2525
DI 10.1534/g3.115.024158
PG 3
WC Genetics & Heredity
SC Genetics & Heredity
GA CZ7CM
UT WOS:000367257500001
PM 27034999
ER
PT J
AU Durr, HB
Krstic, M
Scheinker, A
Ebenbauer, C
AF Duerr, Hans-Bernd
Krstic, Miroslav
Scheinker, Alexander
Ebenbauer, Christian
TI Singularly Perturbed Lie Bracket Approximation
SO IEEE TRANSACTIONS ON AUTOMATIC CONTROL
LA English
DT Article
DE Extremum seeking; Lie brackets; singular perturbations
ID PRACTICAL STABILITY; SYSTEMS; SEEKING
AB We consider the interconnection of two dynamical systems where one has an input-affine vector field. By employing a singular perturbation and a Lie bracket analysis technique, we show how the trajectories can be approximated by two decoupled systems. From this trajectory approximation result and the stability properties of the decoupled systems, we derive stability properties of the overall system.
C1 [Duerr, Hans-Bernd; Ebenbauer, Christian] Univ Stuttgart, Inst Syst Theory & Automat Control, D-70550 Stuttgart, Germany.
[Krstic, Miroslav] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA.
[Krstic, Miroslav] Univ Calif San Diego, Cymer Ctr Control Syst & Dynam, La Jolla, CA 92093 USA.
[Scheinker, Alexander] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Durr, HB (reprint author), Univ Stuttgart, Inst Syst Theory & Automat Control, D-70550 Stuttgart, Germany.
EM hans-bernd.duerr@ist.uni-stuttgart.de; krstic@ucsd.edu;
ascheink@lanl.gov; ce@ist.uni-stuttgart.de
FU Deutsche Forschungsgemeinschaft [EB 425/2-1, EXC 310/1]
FX This work was supported by the Deutsche Forschungsgemeinschaft
(Emmy-Noether-Grant, Novel Ways in Control and Computation, EB 425/2-1,
and Cluster of Excellence in Simulation Technology, EXC 310/1).
Recommended by Associate Editor L. Zaccarian.
NR 15
TC 1
Z9 1
U1 2
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9286
EI 1558-2523
J9 IEEE T AUTOMAT CONTR
JI IEEE Trans. Autom. Control
PD DEC
PY 2015
VL 60
IS 12
BP 3287
EP 3292
DI 10.1109/TAC.2015.2416925
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA CZ7MX
UT WOS:000367284600015
ER
PT J
AU Krueger, D
Porter, J
Peterson, K
AF Krueger, D.
Porter, J.
Peterson, K.
TI Stress and Strain Modeling of Low-Temperature Cofired Ceramic (LTCC)
Seal Frame and Lid
SO JOURNAL OF CERAMIC SCIENCE AND TECHNOLOGY
LA English
DT Article
DE LTCC; EMI; shielding; isolation; Kovar
AB Low-temperature cofired ceramic (LTCC) is established as an excellent packaging technology for high-reliability, high-density microelectronics. LTCC multichip modules (MCMs) comprising both 'surface mount' and 'chip and wire' technologies provide additional customization for performance. Long-term robustness of the packages is impacted by the selection of the seal frame and lid materials used to enclose the components inside distinct rooms in LTCC MCMs. An LTCC seal frame and lid combination has been developed that is capable of meeting the sealing and electromagnetic shielding requirements of MCMs. This work analyzes the stress and strain performance of various seal frame and lid materials, sealing materials, and configurations. The application for the MCM will impact selection of the seal frame, lid, and sealing materials based on this analysis.
C1 [Krueger, D.; Porter, J.] Honeywell Int Inc, Kansas City, MO 64133 USA.
[Peterson, K.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Krueger, D (reprint author), Honeywell Int Inc, Kansas City, MO 64133 USA.
EM dkrueger@kcp.com
FU U.S. Department of Energy [DE-NA0000622]; United States Department of
Energy's National Nuclear Security Administration [DE-AC04 - 94AL85000]
FX Notice: This manuscript has been co-authored by Honeywell Federal
Manufacturing & Technologies under Contract No.DE-NA0000622 with the
U.S. Department of Energy. The United States Government retains and the
publisher, by accepting the article for publication, acknowledges that
the United States Government retains a nonexclusive, paid-up,
irrevocable, world-wide license to publish or reproduce the published
form of this manuscript, or allow others to do so, for United States
Government purposes.; Sandia is a multiprogram laboratory operated by
Sandia Corporation, a Lockheed Martin Company for the United States
Department of Energy's National Nuclear Security Administration under
contract DE-AC04 - 94AL85000.
NR 10
TC 0
Z9 0
U1 2
U2 5
PU GOLLER VERLAG GMBH
PI BADEN BADEN
PA ASCHMATTSTRASSE 8, D-76532 BADEN BADEN, GERMANY
SN 2190-9385
J9 J CERAM SCI TECHNOL
JI J. Ceram. Sci. Technol.
PD DEC
PY 2015
VL 6
IS 4
BP 261
EP 266
DI 10.4416/JCST2015-00064
PG 6
WC Materials Science, Ceramics
SC Materials Science
GA CZ9MQ
UT WOS:000367422100002
ER
PT J
AU Dai, S
Hsieh, LH
AF Dai, Steve
Hsieh, Lung-Hwa
TI Miniature Low-Pass Filters in Low-Loss 9k7 LTCC
SO JOURNAL OF CERAMIC SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Low-temperature cofired ceramics (LTCC); multilayer; miniature low-pass
filter
ID RESONATORS
AB DuPont 9k7 low-temperature cofired ceramic (LTCC) is a low-loss, or high-quality-factor Q, tape system targeting at radio frequency (RF) applications. This paper reports on the effect of a critical process parameter, the heating rate, on the densification and dielectric properties of the 9k7 LTCC. The role of competing densification and crystallization during the sintering of 9k7 is discussed. The high Q of DuPont 9K7 can be used to improve RF system performance, for example a better receiver noise figure, by designing embedded passive RF components such as inductors, capacitors and filters. Miniaturized multilayer low-pass filters (LPF) with a wide stopband were fabricated to showcase the technology.
C1 [Dai, Steve; Hsieh, Lung-Hwa] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Dai, S (reprint author), Sandia Natl Labs, POB 5800,MS 0959, Albuquerque, NM 87185 USA.
EM sxdai@sandia.gov
FU Laboratory Directed Research and Development program at Sandia National
Laboratories; U.S. Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX The authors thank Mr Adrian Wagner for filter fabrication. This work was
supported by the Laboratory Directed Research and Development program at
Sandia National Laboratories, a multi-program laboratory managed and
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the U.S. Department of Energy's National Nuclear
Security Administration under contract DE-AC04-94AL85000.
NR 10
TC 0
Z9 0
U1 1
U2 3
PU GOLLER VERLAG GMBH
PI BADEN BADEN
PA ASCHMATTSTRASSE 8, D-76532 BADEN BADEN, GERMANY
SN 2190-9385
J9 J CERAM SCI TECHNOL
JI J. Ceram. Sci. Technol.
PD DEC
PY 2015
VL 6
IS 4
BP 325
EP 328
DI 10.4416/JCST2015-00033
PG 4
WC Materials Science, Ceramics
SC Materials Science
GA CZ9MQ
UT WOS:000367422100011
ER
PT J
AU Patel, RC
Kamili, S
Teshale, E
AF Patel, Rajiv C.
Kamili, Saleem
Teshale, Eyasu
TI Hepatitis E virus infections in children age 0-15, Uganda outbreak, 2007
SO JOURNAL OF CLINICAL VIROLOGY
LA English
DT Article
DE Hepatitis E infection; Children; Acute viral hepatitis; Uganda
ID INDIA
AB Background: The epidemiology of hepatitis E virus (HEV) infections among children is not well understood, with some studies reporting that hepatitis E infections do not affect children.
Objectives: We analyzed seroepidemiologic data collected during a hepatitis E outbreak in Uganda to determine prevalence of past and recent HEV infections among children aged 0-15 years.
Study design: Individuals were randomly selected from a household census to participate in a seroprevalence survey. We analyzed data on IgM and IgG antibody to HEV among children aged 0-15 years. We categorized the study population by age group [aged 0-5, 6-10, and 11-15 years], and further stratified the youngest children [aged 0-1, 2-3, and 4-5 years]. Presence of IgG anti-HEV alone indicated past HEV infection, whereas recent infection was defined as presence of IgM anti-HEV with or without IgG anti-HEV.
Results: Among children aged 0-15 years (N = 244), prevalence of past HEV infection was 25.4% (62/244) and was highest among children aged 0-5 years [31.0% (27/87)]. Evidence of recent HEV infection was detected in 37.3% (91/244) of children aged 0-15 years. Among younger children, recent HEV infection increased with age from 4.3% (1/23) in children aged 0-1 year to 36.7% (11/30) in children aged 4-5 years.
Conclusion: These data show that children are not spared from HEV infections. Illness during childhood in developing countries is common and HEV infections may be misdiagnosed as another acute illness, or under diagnosed. The lack of clinical care, HEV diagnostics, and surveillance in developing countries limit our full understanding of hepatitis E epidemiology. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Patel, Rajiv C.] Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA.
[Kamili, Saleem; Teshale, Eyasu] Ctr Dis Control & Prevent, Div Viral Hepatitis, Atlanta, GA USA.
RP Patel, RC (reprint author), Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA.
EM rajiv.c.patel@gmail.com
FU Oak Ridge Institute of Science and Education Fellowship; Centers for
Disease Control and Prevention
FX This work was support in part by the Oak Ridge Institute of Science and
Education Fellowship and the Centers for Disease Control and Prevention.
NR 10
TC 1
Z9 1
U1 1
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1386-6532
EI 1873-5967
J9 J CLIN VIROL
JI J. Clin. Virol.
PD DEC
PY 2015
VL 73
BP 112
EP 114
DI 10.1016/j.jcv.2015.11.001
PG 3
WC Virology
SC Virology
GA CZ9AR
UT WOS:000367390700023
PM 26590690
ER
PT J
AU Kelly, JR
Yurista, P
Starry, M
Scharold, J
Bartsch, W
Cotter, A
AF Kelly, John R.
Yurista, Peder
Starry, Matthew
Scharold, Jill
Bartsch, Will
Cotter, Anne
TI Exploration of spatial variability in nearshore water quality using the
first Great Lakes National Coastal Condition Assessment survey
SO JOURNAL OF GREAT LAKES RESEARCH
LA English
DT Article
DE Nearshore; Embayments; Assessment; Phosphorus; Watersheds; Great Lakes
ID ENVIRONMENTAL INDICATORS; OFFSHORE WATERS; UNITED-STATES; ERIE;
PHOSPHORUS; WETLANDS; CLASSIFICATION; RESOURCES; ECOSYSTEMS; MANAGEMENT
AB A comprehensive approach to assess conditions in the Great Lakes nearshore has been lacking for decades. We conducted a pilot survey in Lake Erie (45 sites) in summer 2009. The US National Coastal Condition Assessment (NCCA) was then conducted across the Great Lakes in summer 2010. The NCCA survey design provided statistically based estimates with defined uncertainty bounds for a variety of ecological indicators. For example, water quality (WQ) was measured (233 sampled sites) in the US nearshore, a resource defined with criteria to include waters to 30 m depth and less than 5 km from shore. A sub-resource of the US nearshore (151 separate sample sites) was defined using geometric criteria along the shoreline to identify small to medium embayment areas. Statistical analyses showed that embayments had higher Total Phosphorus and were more turbid than the open nearshore. We explored spatial variability in WQ results (2009, 2010) through regression analyses at multiple scales (within and across lakes) for nearshore and embayment resources. Empirical modeling identified principal drivers of spatial variability as risk factors for enrichment: water column depth and a landscape disturbance metric representing agricultural intensity as an indicator of watershed nutrient loading. Eutrophic nearshore conditions occurred at the upper end of an associated landscape disturbance gradient across watersheds of the US basin, peaking in Lake Erie. Overall results were consistent with the principles of classical limnology theory and demonstrated that a statistical survey approach can contribute to Great Lakes nearshore assessment and research. Published by Elsevier B.V. on behalf of International Association for Great Lakes Research.
C1 [Kelly, John R.; Yurista, Peder; Scharold, Jill; Cotter, Anne] US EPA, Mid Continent Ecol Div, Duluth, MN 55804 USA.
[Starry, Matthew] SRA Int, Fairfax, VA 22033 USA.
[Bartsch, Will] Oak Ridge Inst Sci & Educ, Duluth, MN 55804 USA.
RP Kelly, JR (reprint author), 904 Valley Dr, Duluth, MN 55804 USA.
EM jackrussellkelly@gmail.com
FU EPA's Office of Water; Great Lakes Restoration Initiative (GLRI) funds
FX The US EPA Office of Water, staff from EPA Regions 2, 3, and 5 and the
Great Lakes National Program Office (GLNPO), and from the 8 Great Lakes
US States conducted the US National Coastal Condition Assessment (NCCA)
in summer 2010 as part of a set of National Aquatic Resource Surveys.
Funding to conduct the NCCA came from EPA's Office of Water who assists
States in the conduct of National Aquatic Resource Surveys, and from
enhancements supported by Great Lakes Restoration Initiative (GLRI)
funds, thanks to the vision and determination of Gary Gulezian and Paul
Horvatin. The development of this Great lakes coastal frame and survey
design/analysis has been aided by a strong commitment to include the
Great Lakes in the national assessment over almost a decade, of
individuals in the EPA's Office of Research and Development (Tony Olsen
and Tom Kinkaid, Western Ecology Division; John Macauley, Gulf Ecology
Division; John Kiddon, Atlantic Ecology Division) and Office of Water
(Barry Burgan and Greg Colianni). Others in EPA's Office of Water have
been instrumental in supporting the Great Lakes development, including
Sarah Lehmann, Treda Greyson-Smith, and at Region 5/GLNPO (Paul
Horvatin, Mari Nord, Paul Bertram, Elizabeth Hinchey-Malloy). The survey
design was done by Tony Olsen and Tom Kincaid, who each assisted with
some statistical analyses. Numerous colleagues from the Mid-Continent
Ecology Division assisted with fieldwork in 2009, including Jon Van
Alstine, Tim Corry, Greg Peterson, Joel Hoffman, Mike Knuth, Sam Miller,
David Miller, John Morrice, and summer students Andrew Just, Aisha
Beaty, and Emily Bradshaw. We acknowledge especially Glenn Warren and
Paul Horvatin (GLNPO) for providing time on the R/V Lake Guardian. Tom
Hollenhorst of MED assisted with organizing the GLEI landscape stressor
data sets. This manuscript was approved for submission by the US EPA.
Thanks to David Bolgrien and JGLR anonymous reviewers for comments that
helped clarify presentation. The views expressed in this article are
those of the author and do not necessarily reflect the views or policies
of the US Environment Protection Agency. Mention of trade names or
commercial products does not constitute endorsement or recommendation
for use.
NR 90
TC 0
Z9 0
U1 3
U2 12
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0380-1330
J9 J GREAT LAKES RES
JI J. Gt. Lakes Res.
PD DEC
PY 2015
VL 41
IS 4
BP 1060
EP 1074
DI 10.1016/j.jglr.2015.09.007
PG 15
WC Environmental Sciences; Limnology; Marine & Freshwater Biology
SC Environmental Sciences & Ecology; Marine & Freshwater Biology
GA CZ8OU
UT WOS:000367359800011
ER
PT J
AU Ameziane, N
May, P
Haitjema, A
van de Vrugt, HJ
van Rossum-Fikkert, SE
Ristic, D
Williams, GJ
Balk, J
Rockx, D
Li, H
Rooimans, MA
Oostra, AB
Velleuer, E
Dietrich, R
Bleijerveld, OB
Altelaar, AFM
Meijers-Heijboer, H
Joenje, H
Glusman, G
Roach, J
Hood, L
Galas, D
Wyman, C
Balling, R
den Dunnen, J
de Winter, JP
Kanaar, R
Gelinas, R
Dorsman, JC
AF Ameziane, Najim
May, Patrick
Haitjema, Anneke
van de Vrugt, Henri J.
van Rossum-Fikkert, Sari E.
Ristic, Dejan
Williams, Gareth J.
Balk, Jesper
Rockx, Davy
Li, Hong
Rooimans, Martin A.
Oostra, Anneke B.
Velleuer, Eunike
Dietrich, Ralf
Bleijerveld, Onno B.
Altelaar, A. F. Maarten
Meijers-Heijboer, Hanne
Joenje, Hans
Glusman, Gustavo
Roach, Jared
Hood, Leroy
Galas, David
Wyman, Claire
Balling, Rudi
den Dunnen, Johan
de Winter, Johan P.
Kanaar, Roland
Gelinas, Richard
Dorsman, Josephine C.
TI A novel Fanconi anaemia subtype associated with a dominant-negative
mutation in RAD51
SO NATURE COMMUNICATIONS
LA English
DT Article
ID HOMOLOGOUS RECOMBINATION; CRYSTAL-STRUCTURE; GENETIC-VARIANTS; ATPASE
ACTIVITY; DNA-BINDING; PROTEIN; FILAMENT; INHIBITOR; DISEASE; REPAIR
AB Fanconi anaemia (FA) is a hereditary disease featuring hypersensitivity to DNA cross-linker-induced chromosomal instability in association with developmental abnormalities, bone marrow failure and a strong predisposition to cancer. A total of 17 FA disease genes have been reported, all of which act in a recessive mode of inheritance. Here we report on a de novo g.41022153G>A; p.Ala293Thr (NM_002875) missense mutation in one allele of the homologous recombination DNA repair gene RAD51 in an FA-like patient. This heterozygous mutation causes a novel FA subtype, 'FA-R', which appears to be the first subtype of FA caused by a dominant-negative mutation. The patient, who features microcephaly and mental retardation, has reached adulthood without the typical bone marrow failure and paediatric cancers. Together with the recent reports on RAD51-associated congenital mirror movement disorders, our results point to an important role for RAD51-mediated homologous recombination in neurodevelopment, in addition to DNA repair and cancer susceptibility.
C1 [Ameziane, Najim; Haitjema, Anneke; van de Vrugt, Henri J.; Balk, Jesper; Rockx, Davy; Rooimans, Martin A.; Oostra, Anneke B.; Meijers-Heijboer, Hanne; Joenje, Hans; de Winter, Johan P.; Dorsman, Josephine C.] Vrije Univ Amsterdam, Med Ctr, Dept Clin Genet, NL-1081 BT Amsterdam, Netherlands.
[May, Patrick; Galas, David; Balling, Rudi] Luxembourg Ctr Syst Biomed, L-4362 Esch Sur Alzette, Luxembourg.
[May, Patrick; Li, Hong; Glusman, Gustavo; Roach, Jared; Hood, Leroy; Gelinas, Richard] Inst Syst Biol, Seattle, WA 98109 USA.
[van de Vrugt, Henri J.] Netherlands Canc Inst, Div Biol Stress Response, NL-1066 CX Amsterdam, Netherlands.
[van Rossum-Fikkert, Sari E.; Ristic, Dejan; Wyman, Claire; Kanaar, Roland] Canc Genom Ctr, Dept Genet, NL-3000 CA Rotterdam, Netherlands.
[van Rossum-Fikkert, Sari E.; Ristic, Dejan; Wyman, Claire; Kanaar, Roland] Erasmus MC, Dept Radiat Oncol, NL-3000 CA Rotterdam, Netherlands.
[Williams, Gareth J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Velleuer, Eunike] Univ Dusseldorf, Fac Med, Ctr Child & Adolescent Hlth, Dept Paediat Oncol Hematol & Clin Immunol, D-40225 Dusseldorf, Germany.
[Dietrich, Ralf] Deutsch Fanconi Anam Hilfe eV, D-59427 Unna, Germany.
[Bleijerveld, Onno B.; Altelaar, A. F. Maarten] Netherlands Canc Inst, Mass Spectrometry & Prote Facil, NL-1066 CX Amsterdam, Netherlands.
[Galas, David] Pacific Northwest Diabet Res Inst, Seattle, WA 98122 USA.
[den Dunnen, Johan] Leiden Univ, Med Ctr, Dept Human & Clin Genet, NL-2333 ZA Leiden, Netherlands.
RP Gelinas, R (reprint author), Inst Syst Biol, 401 Terry Ave North, Seattle, WA 98109 USA.
EM Richard.Gelinas@systemsbiology.org; jc.dorsman@vumc.nl
RI Altelaar, Maarten/I-3845-2016;
OI Altelaar, Maarten/0000-0001-5093-5945; Glusman,
Gustavo/0000-0001-8060-5955; May, Patrick/0000-0001-8698-3770
FU Dutch Cancer Society; University of Luxembourg-Institute for Systems
Biology Strategic Partnership; Luxembourg Centre for Systems
Biomedicine; 'le plan Technologies de la Sante par le Gouvernment du
Grand-Duche de Luxembourg' through the Luxembourg Centre for Systems
Biomedicine, University of Luxembourg; Technology Foundation STW project
[11425]; Netherlands Organisation for Scientific Research (NWO) as part
of the National Roadmap Large-scale Research Facilities of the
Netherlands [184.032.201]
FX We are grateful to the proband and his family for contributing to this
study. Financial support was provided by the Dutch Cancer Society
(J.C.D., J.d.D. and J.P.d.W.) and by the University of
Luxembourg-Institute for Systems Biology Strategic Partnership and the
Luxembourg Centre for Systems Biomedicine (R.G., J.R. and G.G.), by 'le
plan Technologies de la Sante par le Gouvernment du Grand-Duche de
Luxembourg' through the Luxembourg Centre for Systems Biomedicine,
University of Luxembourg (P.M.) and the Technology Foundation STW
project 11425 (S.E.v.R.-F., D.R. and C.W.). Computational results
presented in this paper were carried out using the HPC facilities of the
University of Luxembourg (http://hpc.uni.lu). The proteomics work is
part of the project Proteins At Work, financed by the Netherlands
Organisation for Scientific Research (NWO) as part of the National
Roadmap Large-scale Research Facilities of the Netherlands (project
number 184.032.201).
NR 53
TC 10
Z9 10
U1 3
U2 12
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 8829
DI 10.1038/ncomms9829
PG 11
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1WE
UT WOS:000367585500001
PM 26681308
ER
PT J
AU Biastoch, A
Durgadoo, JV
Morrison, AK
van Sebille, E
Weijer, W
Griffies, SM
AF Biastoch, Arne
Durgadoo, Jonathan V.
Morrison, Adele K.
van Sebille, Erik
Weijer, Wilbert
Griffies, Stephen M.
TI Atlantic multi-decadal oscillation covaries with Agulhas leakage
SO NATURE COMMUNICATIONS
LA English
DT Article
ID SOUTHERN ANNULAR MODE; OVERTURNING CIRCULATION; HEMISPHERE WESTERLIES;
SURFACE-TEMPERATURE; NORTH-ATLANTIC; OCEAN; CLIMATE; SYSTEM; IMPACT;
VARIABILITY
AB The interoceanic transfer of seawater between the Indian Ocean and the Atlantic, 'Agulhas leakage', forms a choke point for the overturning circulation in the global ocean. Here, by combining output from a series of high-resolution ocean and climate models with in situ and satellite observations, we construct a time series of Agulhas leakage for the period 1870-2014. The time series demonstrates the impact of Southern Hemisphere westerlies on decadal timescales. Agulhas leakage shows a correlation with the Atlantic Multi-decadal Oscillation on multi-decadal timescales; the former leading by 15 years. This is relevant for climate in the North Atlantic.
C1 [Biastoch, Arne; Durgadoo, Jonathan V.] GEOMAR Helmholtz Ctr Ocean Res Kiel, D-24105 Kiel, Germany.
[Morrison, Adele K.] Princeton Univ, Atmospher & Ocean Sci Program, Princeton, NJ 08544 USA.
[van Sebille, Erik] Univ New S Wales, Climate Change Res Ctr, Sydney, NSW 2010, Australia.
[van Sebille, Erik] Univ New S Wales, ARC Ctr Excellence Climate Syst Sci, Sydney, NSW 2010, Australia.
[van Sebille, Erik] Univ London Imperial Coll Sci Technol & Med, Grantham Inst, London SW7 2AZ, England.
[van Sebille, Erik] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England.
[Weijer, Wilbert] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Griffies, Stephen M.] NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08542 USA.
RP Biastoch, A (reprint author), GEOMAR Helmholtz Ctr Ocean Res Kiel, Dusternbrooker Weg 20, D-24105 Kiel, Germany.
EM abiastoch@geomar.de
RI Biastoch, Arne/B-5219-2014; van Sebille, Erik/F-6781-2010;
OI Biastoch, Arne/0000-0003-3946-4390; van Sebille,
Erik/0000-0003-2041-0704; Durgadoo, Jonathan/0000-0001-6297-5178
FU German Federal Ministry for Education and Research (BMBF) framework
project SPACES [03G0835A]; Australian Research Council [DE130101336]; US
Department of Energy [DE-SC0012457]; DOE Office of Science's RGCM
program
FX The model data required for this analysis and in-depth information on
the simulations will be provided on request. This work received funding
from German Federal Ministry for Education and Research (BMBF) framework
project SPACES (03G0835A). E.v.S. was supported by the Australian
Research Council via grant DE130101336. A.K.M. was supported by the US
Department of Energy under Contract DE-SC0012457. W.W. was supported by
DOE Office of Science's RGCM program. We acknowledge the availability of
HadISST, OISST, ERSST and AVISO data. We thank Mike Winton for providing
useful comments.
NR 46
TC 3
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U1 4
U2 10
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 10082
DI 10.1038/ncomms10082
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1QC
UT WOS:000367569400002
PM 26656850
ER
PT J
AU Ye, XC
Zhu, CH
Ercius, P
Raja, SN
He, B
Jones, MR
Hauwiller, MR
Liu, Y
Xu, T
Alivisatos, AP
AF Ye, Xingchen
Zhu, Chenhui
Ercius, Peter
Raja, Shilpa N.
He, Bo
Jones, Matthew R.
Hauwiller, Matthew R.
Liu, Yi
Xu, Ting
Alivisatos, A. Paul
TI Structural diversity in binary superlattices self-assembled from
polymer-grafted nanocrystals
SO NATURE COMMUNICATIONS
LA English
DT Article
ID STAR-BRANCHED MACROMOLECULES; NANOPARTICLE ASSEMBLIES; GOLD
NANOPARTICLES; PARTICLES; BRUSHES; NANOCOMPOSITES; TRANSITIONS;
ORGANIZATION; POLYSTYRENE; INTERFACE
AB Multicomponent nanocrystal superlattices represent an interesting class of material that derives emergent properties from mesoscale structure, yet their programmability can be limited by the alkyl-chain-based ligands decorating the surfaces of the constituent nanocrystals. Polymeric ligands offer distinct advantages, as they allow for more precise tuning of the effective size and 'interaction softness' through changes to the polymer's molecular weight, chemical nature, architecture, persistence length and surrounding solvent. Here we show the formation of 10 different binary nanocrystal superlattices (BNSLs) with both two- and three-dimensional order through independent adjustment of the core size of spherical nanocrystals and the molecular weight of densely grafted polystyrene ligands. These polymer-brush-based ligands introduce new energetic contributions to the interparticle potential that stabilizes various BNSL phases across a range of length scales and interparticle spacings. Our study opens the door for nanocrystals to become modular elements in the design of functional particle brush solids with controlled nanoscale interfaces and mesostructures.
C1 [Ye, Xingchen; Jones, Matthew R.; Hauwiller, Matthew R.; Alivisatos, A. Paul] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Zhu, Chenhui] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Ercius, Peter] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Natl Ctr Elect Microscopy, Berkeley, CA 94720 USA.
[Raja, Shilpa N.; Xu, Ting] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Raja, Shilpa N.; Xu, Ting; Alivisatos, A. Paul] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[He, Bo; Liu, Yi] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Alivisatos, A. Paul] Kavli Energy NanoSci Inst, Berkeley, CA 94720 USA.
RP Xu, T (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
EM tingxu@berkeley.edu; apalivisatos@lbl.gov
RI Liu, yi/A-3384-2008; Alivisatos , Paul /N-8863-2015; Ye,
Xingchen/D-3202-2017;
OI Liu, yi/0000-0002-3954-6102; Alivisatos , Paul /0000-0001-6895-9048; Ye,
Xingchen/0000-0001-6851-2721; Jones, Matthew/0000-0002-9289-291X;
Hauwiller, Matthew/0000-0002-5448-6937
FU Department of Energy, Office of Basic Energy Sciences through the
'Self-Assembly of Organic/Inorganic Nanocomposite Materials' program at
Lawrence Berkeley National Laboratory (LBNL) [DE-AC02-05CH11231]; Office
of Science, Office of Basic Energy Sciences, U.S. Department of Energy
[DE-AC02-05CH11231]; Arnold and Mabel Beckman Foundation
FX We thank Dr Chengyu Song at the National Center of Electron Microscopy
at the Molecular Foundry for help with electron microscopy. X.Y. thanks
Dr Son C. Nguyen and Dr Jeffrey J. Urban for discussions. This work was
supported by the Department of Energy, Office of Basic Energy Sciences
under Contract No. DE-AC02-05CH11231 through the 'Self-Assembly of
Organic/Inorganic Nanocomposite Materials' program at Lawrence Berkeley
National Laboratory (LBNL). This work made use of facilities at the
Molecular Foundry and beamline 7.3.3 of the Advanced Light Source at
LBNL, supported by the Office of Science, Office of Basic Energy
Sciences, U.S. Department of Energy, under Contract No.
DE-AC02-05CH11231. M.R.J. acknowledges the Arnold and Mabel Beckman
Foundation for a postdoctoral fellowship.
NR 69
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U1 23
U2 82
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 10052
DI 10.1038/ncomms10052
PG 10
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1PR
UT WOS:000367568200005
PM 26628256
ER
PT J
AU Zhang, ZJ
Mao, MM
Wang, JW
Gludovatz, B
Zhang, Z
Mao, SX
George, EP
Yu, Q
Ritchie, RO
AF Zhang, ZiJiao
Mao, M. M.
Wang, Jiangwei
Gludovatz, Bernd
Zhang, Ze
Mao, Scott X.
George, Easo P.
Yu, Qian
Ritchie, Robert O.
TI Nanoscale origins of the damage tolerance of the high-entropy alloy
CrMnFeCoNi
SO NATURE COMMUNICATIONS
LA English
DT Article
ID AUSTENITIC STAINLESS-STEELS; MECHANICAL-PROPERTIES; CRYOGENIC FRACTURE;
TRIP/TWIP STEELS; DEFORMATION; TOUGHNESS; STRENGTH; MICROSTRUCTURE;
STABILITY
AB Damage tolerance can be an elusive characteristic of structural materials requiring both high strength and ductility, properties that are often mutually exclusive. High-entropy alloys are of interest in this regard. Specifically, the single-phase CrMnFeCoNi alloy displays tensile strength levels of similar to 1GPa, excellent ductility (similar to 60-70%) and exceptional fracture toughness (K-JIc>200 MPa root m). Here through the use of in situ straining in an aberration-corrected transmission electron microscope, we report on the salient atomistic to micro-scale mechanisms underlying the origin of these properties. We identify a synergy of multiple deformation mechanisms, rarely achieved in metallic alloys, which generates high strength, work hardening and ductility, including the easy motion of Shockley partials, their interactions to form stacking-fault parallelepipeds, and arrest at planar slip bands of undissociated dislocations. We further show that crack propagation is impeded by twinned, nanoscale bridges that form between the near-tip crack faces and delay fracture by shielding the crack tip.
C1 [Zhang, ZiJiao; Mao, M. M.; Zhang, Ze; Mao, Scott X.; Yu, Qian] Zhejiang Univ, Ctr Electron Microscopy, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China.
[Zhang, ZiJiao; Mao, M. M.; Zhang, Ze; Mao, Scott X.; Yu, Qian] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China.
[Wang, Jiangwei; Mao, Scott X.] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15261 USA.
[Gludovatz, Bernd; Ritchie, Robert O.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[George, Easo P.] Ruhr Univ Bochum, Inst Mat, D-44801 Bochum, Germany.
[Ritchie, Robert O.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Yu, Q (reprint author), Zhejiang Univ, Ctr Electron Microscopy, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China.
EM qyuzju@gmail.com; roritchie@lbl.gov
RI Ritchie, Robert/A-8066-2008; Wang, Jiangwei/F-8249-2011;
OI Ritchie, Robert/0000-0002-0501-6998; Wang, Jiangwei/0000-0003-1191-0782;
Gludovatz, Bernd/0000-0002-2420-3879
FU Chinese 1000-Youth-Talent Plan; State Key Program for Basic Research of
China [2015CB659300]; US by US Department of Energy, Office of Science,
Office of Basic Energy Sciences, Materials Sciences and Engineering
Division, through the Materials Science and Technology Division at Oak
Ridge National Laboratory; Mechanical Behaviour of Materials program
(KC13) at the Lawrence Berkeley National Laboratory
FX This work was supported in China by grants from the Chinese
1000-Youth-Talent Plan and the State Key Program for Basic Research of
China (No. 2015CB659300) (for Z.J.Z., M.M.M., J.W., Z.Z., S.X.M. and
Q.Y.) and in the US by US Department of Energy, Office of Science,
Office of Basic Energy Sciences, Materials Sciences and Engineering
Division, through the Materials Science and Technology Division at Oak
Ridge National Laboratory (for E.P.G.) and the Mechanical Behaviour of
Materials program (KC13) at the Lawrence Berkeley National Laboratory
(for B.G. and R.O.R.).
NR 29
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U1 50
U2 160
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2015
VL 6
AR 10143
DI 10.1038/ncomms10143
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA DA1QU
UT WOS:000367571300002
PM 26647978
ER
PT J
AU Albertazzi, B
Chen, SN
Antici, P
Boker, J
Borghesi, M
Breil, J
Dervieux, V
Feugeas, JL
Lancia, L
Nakatsutsumi, M
Nicolai, P
Romagnagni, L
Shepherd, R
Sentoku, Y
Starodubtsev, M
Swantusch, M
Tikhonchuk, VT
Willi, O
d'Humieres, E
Pepin, H
Fuchs, J
AF Albertazzi, B.
Chen, S. N.
Antici, P.
Boeker, J.
Borghesi, M.
Breil, J.
Dervieux, V.
Feugeas, J. L.
Lancia, L.
Nakatsutsumi, M.
Nicolai, Ph.
Romagnagni, L.
Shepherd, R.
Sentoku, Y.
Starodubtsev, M.
Swantusch, M.
Tikhonchuk, V. T.
Willi, O.
d'Humieres, E.
Pepin, H.
Fuchs, J.
TI Dynamics and structure of self-generated magnetics fields on solids
following high contrast, high intensity laser irradiation
SO PHYSICS OF PLASMAS
LA English
DT Article
ID SHORT-PULSE LASER; ION-ACCELERATION; PLASMAS; SIMULATIONS; INSTABILITY;
TARGETS
AB The dynamics of self-generated magnetic B-fields produced following the interaction of a high contrast, high intensity (I > 10(19) W cm(-2)) laser beam with thin (3 mu m thick) solid (Al or Au) targets is investigated experimentally and numerically. Two main sources drive the growth of B-fields on the target surfaces. B-fields are first driven by laser-generated hot electron currents that relax over similar to 10-20 ps. Over longer timescales, the hydrodynamic expansion of the bulk of the target into vacuum also generates B-field induced by non-collinear gradients of density and temperature. The laser irradiation of the target front side strongly localizes the energy deposition at the target front, in contrast to the target rear side, which is heated by fast electrons over a much larger area. This induces an asymmetry in the hydrodynamic expansion between the front and rear target surfaces, and consequently the associated B-fields are found strongly asymmetric. The sole long-lasting (>30 ps) B-fields are the ones growing on the target front surface, where they remain of extremely high strength (similar to 8-10 MG). These B-fields have been recently put by us in practical use for focusing laser-accelerated protons [B. Albertazzi et al., Rev. Sci. Instrum. 86, 043502 (2015)]; here we analyze in detail their dynamics and structure. (C) 2015 AIP Publishing LLC.
C1 [Albertazzi, B.; Chen, S. N.; Dervieux, V.; Nakatsutsumi, M.; Romagnagni, L.; Fuchs, J.] UPMC, CEA, CNRS, Ecole Polytech,LULI, F-91128 Palaiseau, France.
[Albertazzi, B.; Antici, P.; Pepin, H.] INRS EMT, Varennes, PQ J3X 1S2, Canada.
[Albertazzi, B.] Osaka Univ, Grad Sch Engn, Suita, Osaka 565087, Japan.
[Chen, S. N.; Starodubtsev, M.; Fuchs, J.] Inst Appl Phys, Nizhnii Novgorod 603950, Russia.
[Antici, P.; Lancia, L.] Univ Roma La Sapienza, Dept SBAI, I-00161 Rome, Italy.
[Boeker, J.; Swantusch, M.; Willi, O.] Univ Dusseldorf, Inst Laser & Plasmaphys, Dusseldorf, Germany.
[Borghesi, M.] Queens Univ, Sch Math & Phys, Belfast, Antrim, North Ireland.
[Breil, J.; Feugeas, J. L.; Nicolai, Ph.; Tikhonchuk, V. T.; d'Humieres, E.] Univ Bordeaux, CNRS, CEA, CELIA, F-33405 Talence, France.
[Shepherd, R.] LLNL, Livermore, CA 94550 USA.
[Sentoku, Y.] Univ Nevada, Dept Phys, Reno, NV 89557 USA.
RP Albertazzi, B (reprint author), UPMC, CEA, CNRS, Ecole Polytech,LULI, F-91128 Palaiseau, France.
EM julien.fuchs@polytechnique.fr
RI Sentoku, Yasuhiko/P-5419-2014
FU U.S. Department of Energy, Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Laserlab-Europe [284464, 001528]; Agence Nationale
de la Recherche [11-IDEX-0004-02]; DFG GRK [1203]; NSERC [435416,
SFB/TR18]; EPSRC [EP/K022415/1, EP/J002550/1]; Ministry of Education and
Science of the Russian Federation [14.Z50.31.0007]
FX We acknowledge the support of the staff at the Jupiter Laser Facility at
Lawrence Livermore National Laboratory. The use of the Jupiter Laser
Facility was supported by the U.S. Department of Energy, Lawrence
Livermore National Laboratory, under Contract No. DE-AC52-07NA27344. The
research leading to these results has received funding from
Laserlab-Europe (Grant Agreement No. 284464, EC's seventh framework
program) and Grant No. 001528. This work was partly done within the
LABEX Plas@Par project and supported by Grant No. 11-IDEX-0004-02 from
Agence Nationale de la Recherche. This work was also partly supported by
the DFG GRK 1203, by NSERC Grant No. 435416 - Computecanada and SFB/TR18
programs and by EPSRC Grant Nos. EP/K022415/1 and EP/J002550/1. This
work was supported in part by the Ministry of Education and Science of
the Russian Federation under Contract No. 14.Z50.31.0007.
NR 54
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U1 8
U2 28
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 123108
DI 10.1063/1.4936095
PG 11
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400062
ER
PT J
AU Asenjo, FA
Comisso, L
Mahajan, SM
AF Asenjo, Felipe A.
Comisso, Luca
Mahajan, Swadesh M.
TI Generalized magnetofluid connections in pair plasmas
SO PHYSICS OF PLASMAS
LA English
DT Article
AB We extend the magnetic connection theorem of ideal magnetohydrodynamics to nonideal relativistic pair plasmas. Adopting a generalized Ohm's law, we prove the existence of generalized magnetofluid connections that are preserved by the plasma dynamics. We show that these connections are related to a general antisymmetric tensor that unifies the electromagnetic and fluid fields. The generalized magnetofluid connections set important constraints on the plasma dynamics by forbidding transitions between configurations with different magnetofluid connectivity. An approximated solution is explicitly shown where the corrections due to current inertial effects are found. (C) 2015 AIP Publishing LLC.
C1 [Asenjo, Felipe A.] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Santiago 7941169, Chile.
[Comisso, Luca] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA.
[Comisso, Luca] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08544 USA.
[Comisso, Luca] Politecn Torino, Dipartimento Energia, I-10129 Turin, Italy.
[Comisso, Luca] CNR, Ist Sistemi Complessi, I-00185 Rome, Italy.
[Mahajan, Swadesh M.] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA.
RP Asenjo, FA (reprint author), Univ Adolfo Ibanez, Fac Ingn & Ciencias, Santiago 7941169, Chile.
EM felipe.asenjo@uai.cl; lcomisso@princeton.edu; mahajan@mail.utexas.edu
OI Comisso, Luca/0000-0001-8822-8031
FU Fondecyt-Chile [11140025]
FX F.A.A. thanks Fondecyt-Chile for Funding No. 11140025.
NR 33
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Z9 4
U1 1
U2 5
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 122109
DI 10.1063/1.4938039
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400019
ER
PT J
AU Burgos, JMM
Tritz, K
Stutman, D
Bell, RE
LeBlanc, BP
Sabbagh, SA
AF Burgos, J. M. Munoz
Tritz, K.
Stutman, D.
Bell, R. E.
LeBlanc, B. P.
Sabbagh, S. A.
TI Applications of advanced kinetic collisional radiative modeling and
Bremsstrahlung emission to quantitative impurity analysis on the
National Spherical Torus Experiment
SO PHYSICS OF PLASMAS
LA English
DT Article
ID HYDROGENIC IONS; RECOMBINATION; STATES; POPULATIONS; PLASMAS
AB An advanced kinetic collisional radiative model is used to predict beam into plasma charge-exchange visible and extreme UV (XUV similar to 50 - 700 angstrom) light emission to quantify impurity density profiles on NSTX. This kinetic model is first benchmarked by predicting line-of-sight integrated emission for the visible lambda = 5292.0 angstrom line of carbon (C VI n = 8 -> 7), and comparing these predictions to absolute calibrated measurements from the active CHarge-Exchange Recombination Spectroscopy diagnostic (CHERS) on NSTX. Once benchmarked, the model is used to predict charge-exchange emission for the 182.1 angstrom line of carbon (C VI n = 3 -> 2) that is used to scale Bremsstrahlung continuum emission in the UV/XUV region. The scaled Bremsstrahlung emission is used as a base to estimate an absolute intensity calibration curve of a XUV Transmission Grating-based Imaging Spectrometer (TGIS) diagnostic installed on the National Spherical Torus Experiment (NSTX and upgrade NSTX-U). The TGIS diagnostic operates in the wavelength region similar to 50 - 700 angstrom, and it is used to measure impurity spectra from charge-exchange emission. Impurity densities are estimated by fitting synthetic emission from the kinetic charge-exchange model to TGIS spectral measurements. (C) 2015 AIP Publishing LLC.
C1 [Burgos, J. M. Munoz; Tritz, K.; Stutman, D.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Bell, R. E.; LeBlanc, B. P.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Sabbagh, S. A.] Columbia Univ, New York, NY 10027 USA.
RP Burgos, JMM (reprint author), Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
EM jmunozbu@pppl.gov; ktritz@pppl.gov; dstutma1@jhu.edu; rbell@pppl.gov;
leblanc@pppl.gov; sabbagh@pppl.gov
RI Stutman, Dan/P-4048-2015
FU U.S. Department of Energy (DoE) [DE-S0000787]; U.S. DoE
[DE-AC02-09ch11466]
FX The work at Johns Hopkins University was supported by the U.S.
Department of Energy (DoE) under Grant: DE-S0000787. The work at PPPL
was supported under U.S. DoE Grant: DE-AC02-09ch11466.
NR 35
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U1 1
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 123301
DI 10.1063/1.4936953
PG 11
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400075
ER
PT J
AU Finn, JM
Cole, AJ
Brennan, DP
AF Finn, John M.
Cole, Andrew J.
Brennan, Dylan P.
TI Error field penetration and locking to the backward propagating wave
SO PHYSICS OF PLASMAS
LA English
DT Article
ID DRIFT-TEARING MODES; RESISTIVE INSTABILITIES; TOKAMAK PLASMA;
CYLINDRICAL GEOMETRY; CONFIGURATIONS; STABILITY; PINCH
AB In this letter, we investigate error field penetration, or locking, behavior in plasmas having stable tearing modes with finite real frequencies omega(r) in the plasma frame. In particular, we address the fact that locking can drive a significant equilibrium flow. We show that this occurs at a velocity slightly above v = omega(r)/k, corresponding to the interaction with a backward propagating tearing mode in the plasma frame. Results are discussed for a few typical tearing mode regimes, including a new derivation showing that the existence of real frequencies occurs for viscoresistive tearing modes, in an analysis including the effects of pressure gradient, curvature, and parallel dynamics. The general result of locking to a finite velocity flow is applicable to a wide range of tearing mode regimes, indeed any regime where real frequencies occur. (C) 2015 AIP Publishing LLC.
C1 [Finn, John M.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Cole, Andrew J.] Columbia Univ, Dept Appl Math & Appl Phys, New York, NY 10027 USA.
[Brennan, Dylan P.] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Finn, JM (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
FU DOE Office of Science, Fusion Energy Sciences; DOE Office of Science
[DE-SC0014005, DE-SC0014119]; NNSA of the U.S. DOE by LANL; DOE
[DEAC52-06NA25396]
FX The work of J. M. Finn was supported by the DOE Office of Science,
Fusion Energy Sciences and performed under the auspices of the NNSA of
the U.S. DOE by LANL, operated by LANS LLC under DOE Contract No.
DEAC52-06NA25396. The work of D. P. Brennan and A. J. Cole was supported
by the DOE Office of Science collaborative Grant Nos. DE-SC0014005 and
DE-SC0014119, respectively. The authors would like to thank A.
Bhattacharjee, R. White, and L. Delgado-Aparicio for useful discussions.
NR 25
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U1 3
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PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 120701
DI 10.1063/1.4939211
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400001
ER
PT J
AU Harvey-Thompson, AJ
Sefkow, AB
Nagayama, TN
Wei, MS
Campbell, EM
Fiksel, G
Chang, PY
Davies, JR
Barnak, DH
Glebov, VY
Fitzsimmons, P
Fooks, J
Blue, BE
AF Harvey-Thompson, A. J.
Sefkow, A. B.
Nagayama, T. N.
Wei, M. S.
Campbell, E. M.
Fiksel, G.
Chang, P. -Y.
Davies, J. R.
Barnak, D. H.
Glebov, V. Y.
Fitzsimmons, P.
Fooks, J.
Blue, B. E.
TI Diagnosing laser-preheated magnetized plasmas relevant to magnetized
liner inertial fusion
SO PHYSICS OF PLASMAS
LA English
DT Article
ID SIMULATIONS; INSTABILITIES; PROPAGATION; MODELS
AB We present a platform on the OMEGA EP Laser Facility that creates and diagnoses the conditions present during the preheat stage of the MAGnetized Liner Inertial Fusion (MagLIF) concept. Experiments were conducted using 9 kJ of 3 omega (355 nm) light to heat an underdense deuterium gas (electron density: 2.5 x 10(20) cm(-3) = 0.025 of critical density) magnetized with a 10 T axial field. Results show that the deuterium plasma reached a peak electron temperature of 670 +/- 140 eV, diagnosed using streaked spectroscopy of an argon dopant. The results demonstrate that plasmas relevant to the preheat stage of MagLIF can be produced at multiple laser facilities, thereby enabling more rapid progress in understanding magnetized preheat. Results are compared with magneto-radiation-hydrodynamics simulations, and plans for future experiments are described. VC 2015 AIP Publishing LLC.
C1 [Harvey-Thompson, A. J.; Sefkow, A. B.; Nagayama, T. N.; Campbell, E. M.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Wei, M. S.; Fitzsimmons, P.; Fooks, J.; Blue, B. E.] Gen Atom, San Diego, CA 92186 USA.
[Fiksel, G.; Chang, P. -Y.; Davies, J. R.; Barnak, D. H.; Glebov, V. Y.] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
RP Harvey-Thompson, AJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
RI Chang, Po-Yu/L-5745-2016;
OI Barnak, Daniel/0000-0002-4646-7517
FU National Nuclear Security Administration [DE-AC04-94AL85000,
DE-NA0001944]; Laboratory Directed Research and Development [173190];
U.S. Department of Energy (Fusion Science Center) [DE-FG02-04ER54786,
DE-FC02-04ER54789]; Office of Fusion Energy Science; University of
Rochester; New York State Energy Research and Development Authority
FX The authors gratefully acknowledge the outstanding support of the entire
OMEGA EP crew at the Laboratory for Laser Energetics. The authors also
acknowledge useful discussions with Michael Cuneo, Kyle Peterson, Steven
Slutz, Christopher Jennings, and Daniel Sinars. A.B.S. acknowledges J.
M. Koning and M. M. Marinak for code support. Sandia is a multiprogram
laboratory operated by Sandia Corporation, a Lockheed Martin Company,
for the National Nuclear Security Administration under Contract No.
DE-AC04-94AL85000. Support provided in part by the Laboratory Directed
Research and Development Project No. 173190. This material is based upon
work supported by the U.S. Department of Energy under Cooperative
Agreement Nos. DE-FG02-04ER54786 and DE-FC02-04ER54789 (Fusion Science
Center) with the Office of Fusion Energy Science and by the National
Nuclear Security Administration under Award No. DE-NA0001944, the
University of Rochester, and the New York State Energy Research and
Development Authority. The support of DOE does not constitute an
endorsement by DOE of the views expressed in this article.
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PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 122708
DI 10.1063/1.4938047
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400049
ER
PT J
AU He, Y
Qin, H
Sun, YJ
Xiao, JY
Zhang, RL
Liu, J
AF He, Yang
Qin, Hong
Sun, Yajuan
Xiao, Jianyuan
Zhang, Ruili
Liu, Jian
TI Hamiltonian time integrators for Vlasov-Maxwell equations
SO PHYSICS OF PLASMAS
LA English
DT Article
ID ALGORITHMS; SYSTEM
AB Hamiltonian time integrators for the Vlasov-Maxwell equations are developed by a Hamiltonian splitting technique. The Hamiltonian functional is split into five parts, which produces five exactly solvable subsystems. Each subsystem is a Hamiltonian system equipped with the Morrison-Marsden-Weinstein Poisson bracket. Compositions of the exact solutions provide Poisson structure preserving/Hamiltonian methods of arbitrary high order for the Vlasov-Maxwell equations. They are then accurate and conservative over a long time because of the Poisson-preserving nature. (c) 2015 AIP Publishing LLC.
C1 [He, Yang; Qin, Hong; Xiao, Jianyuan; Zhang, Ruili; Liu, Jian] Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Anhui, Peoples R China.
[He, Yang; Qin, Hong; Xiao, Jianyuan; Zhang, Ruili; Liu, Jian] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China.
[He, Yang; Xiao, Jianyuan; Zhang, Ruili; Liu, Jian] Chinese Acad Sci, Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China.
[Qin, Hong] Princeton Univ, Plasma Phys Lab, Princeton, NJ USA.
[Sun, Yajuan] Chinese Acad Sci, Acad Math & Syst Sci, LSEC, Beijing 100190, Peoples R China.
RP He, Y (reprint author), Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Anhui, Peoples R China.
OI Liu, Jian/0000-0001-7484-401X
FU National Natural Science Foundation of China [11271357, 11261140328,
11305171, 11505185]; CAS; ITER-China Program [2015GB111003,
2014GB124005, 2013GB111000]; JSPS-NRF-NSFC A3 Foresight Program in the
field of Plasma Physics [NSFC-11261140328]; Fundamental Research Funds
for the Central Universities [WK2030040057]
FX This research was supported by the National Natural Science Foundation
of China (11271357, 11261140328, 11305171, 11505185), the CAS Program
for Interdisciplinary Collaboration Team, the ITER-China Program
(2015GB111003, 2014GB124005, and 2013GB111000), the JSPS-NRF-NSFC A3
Foresight Program in the field of Plasma Physics (NSFC-11261140328), and
the Fundamental Research Funds for the Central Universities
(WK2030040057).
NR 29
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U2 31
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 124503
DI 10.1063/1.4938034
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400106
ER
PT J
AU Ma, X
Maurer, DA
Knowlton, SF
ArchMiller, MC
Cianciosa, MR
Ennis, DA
Hanson, JD
Hartwell, GJ
Hebert, JD
Herfindal, JL
Pandya, MD
Roberds, NA
Traverso, PJ
AF Ma, X.
Maurer, D. A.
Knowlton, S. F.
ArchMiller, M. C.
Cianciosa, M. R.
Ennis, D. A.
Hanson, J. D.
Hartwell, G. J.
Hebert, J. D.
Herfindal, J. L.
Pandya, M. D.
Roberds, N. A.
Traverso, P. J.
TI Non-axisymmetric equilibrium reconstruction of a current-carrying
stellarator using external magnetic and soft x-ray inversion radius
measurements
SO PHYSICS OF PLASMAS
LA English
DT Article
ID PLASMA; DIAGNOSTICS; STABILITY; PROFILES; FIELD
AB Non-axisymmetric free-boundary equilibrium reconstructions of stellarator plasmas are performed for discharges in which the magnetic configuration is strongly modified by ohmically driven plasma current. These studies were performed on the compact toroidal hybrid device using the V3FIT reconstruction code with a set of 50 magnetic diagnostics external to the plasma. With the assumption of closed magnetic flux surfaces, the reconstructions using external magnetic measurements allow accurate estimates of the net toroidal flux within the last closed flux surface, the edge safety factor, and the plasma shape of these highly non-axisymmetric plasmas. The inversion radius of standard saw-teeth is used to infer the current profile near the magnetic axis; with external magnetic diagnostics alone, the current density profile is imprecisely reconstructed. (C) 2015 AIP Publishing LLC.
C1 [Ma, X.; Maurer, D. A.; Knowlton, S. F.; ArchMiller, M. C.; Ennis, D. A.; Hanson, J. D.; Hartwell, G. J.; Hebert, J. D.; Herfindal, J. L.; Pandya, M. D.; Roberds, N. A.; Traverso, P. J.] Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
[Cianciosa, M. R.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
RP Ma, X (reprint author), Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
EM xzm0005@auburn.edu
OI Ma, Xinxing/0000-0002-7326-2146; Herfindal, Jeffrey/0000-0003-2846-597X
FU U.S. Department of Energy [DE-FG02-00ER54610]
FX We thank J. Bialek of Columbia University for running the VALEN code for
CTH geometry and J. Dawson of Auburn University for his role in
operating and maintaining the CTH facility. Data for the figures
presented in this article may be found at
http://www.auburn.edu/academic/cosam/departments/physics/research/fusion
/publications.htm. This work is supported by U.S. Department of Energy
Grant No. DE-FG02-00ER54610.
NR 24
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U1 0
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 122509
DI 10.1063/1.4938031
PG 9
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400037
ER
PT J
AU Milovich, JL
Robey, HF
Clark, DS
Baker, KL
Casey, DT
Cerjan, C
Field, J
MacPhee, AG
Pak, A
Patel, PK
Peterson, JL
Smalyuk, VA
Weber, CR
AF Milovich, J. L.
Robey, H. F.
Clark, D. S.
Baker, K. L.
Casey, D. T.
Cerjan, C.
Field, J.
MacPhee, A. G.
Pak, A.
Patel, P. K.
Peterson, J. L.
Smalyuk, V. A.
Weber, C. R.
TI Design of indirectly driven, high-compression Inertial Confinement
Fusion implosions with improved hydrodynamic stability using a 4-shock
adiabat-shaped drive
SO PHYSICS OF PLASMAS
LA English
DT Article
ID INSTABILITY; SHOCK
AB Experimental results from indirectly driven ignition implosions during the National Ignition Campaign (NIC) [M. J. Edwards et al., Phys. Plasmas 20, 070501 (2013)] achieved a record compression of the central deuterium-tritium fuel layer with measured areal densities up to 1.2 g/cm(2), but with significantly lower total neutron yields (between 1.5 x 10(14) and 5.5 x 10(14)) than predicted, approximately 10% of the 2D simulated yield. An order of magnitude improvement in the neutron yield was subsequently obtained in the "high-foot" experiments [O.A. Hurricane et al., Nature 506, 343 (2014)]. However, this yield was obtained at the expense of fuel compression due to deliberately higher fuel adiabat. In this paper, the design of an adiabat-shaped implosion is presented, in which the laser pulse is tailored to achieve similar resistance to ablation-front instability growth, but with a low fuel adiabat to achieve high compression. Comparison with measured performance shows a factor of 3-10x improvement in the neutron yield (>40% of predicted simulated yield) over similar NIC implosions, while maintaining a reasonable fuel compression of > 1 g/cm(2). Extension of these designs to higher laser power and energy is discussed to further explore the trade-off between increased implosion velocity and the deleterious effects of hydrodynamic instabilities. (C) 2015 AIP Publishing LLC.
C1 [Milovich, J. L.; Robey, H. F.; Clark, D. S.; Baker, K. L.; Casey, D. T.; Cerjan, C.; Field, J.; MacPhee, A. G.; Pak, A.; Patel, P. K.; Peterson, J. L.; Smalyuk, V. A.; Weber, C. R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Milovich, JL (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM milovich1@llnl.gov
RI Patel, Pravesh/E-1400-2011;
OI Cerjan, Charles/0000-0002-5168-6845
FU Lawrence Livermore National Security, LLC, (LLNS) [DE-AC52-07NA27344]
FX We wish to thank the entire NIF experimental and design team for useful
comments and guidance. We would like to acknowledge especially P.
Celliers for the unfolding and analysis of the VISAR data, B. Bachmann
for his analysis of EXHI data of the keyhole targets. This work was
performed under the auspices of the Lawrence Livermore National
Security, LLC, (LLNS) under Contract No. DE-AC52-07NA27344.
NR 60
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Z9 10
U1 1
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 122702
DI 10.1063/1.4935922
PG 11
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400043
ER
PT J
AU Pak, A
Dewald, EL
Landen, OL
Milovich, J
Strozzi, DJ
Hopkins, LFB
Bradley, DK
Divol, L
Ho, DD
MacKinnon, AJ
Meezan, NB
Michel, P
Moody, JD
Moore, AS
Schneider, MB
Town, RPJ
Hsing, WW
Edwards, MJ
AF Pak, A.
Dewald, E. L.
Landen, O. L.
Milovich, J.
Strozzi, D. J.
Hopkins, L. F. Berzak
Bradley, D. K.
Divol, L.
Ho, D. D.
MacKinnon, A. J.
Meezan, N. B.
Michel, P.
Moody, J. D.
Moore, A. S.
Schneider, M. B.
Town, R. P. J.
Hsing, W. W.
Edwards, M. J.
TI Laser absorption, power transfer, and radiation symmetry during the
first shock of inertial confinement fusion gas-filled hohlraum
experiments
SO PHYSICS OF PLASMAS
LA English
DT Article
ID NATIONAL-IGNITION-FACILITY; TARGETS; GAIN
AB Temporally resolved measurements of the hohlraum radiation flux asymmetry incident onto a bismuth coated surrogate capsule have been made over the first two nanoseconds of ignition relevant laser pulses. Specifically, we study the P2 asymmetry of the incoming flux as a function of cone fraction, defined as the inner-to-total laser beam power ratio, for a variety of hohlraums with different scales and gas fills. This work was performed to understand the relevance of recent experiments, conducted in new reduced-scale neopentane gas filled hohlraums, to full scale helium filled ignition targets. Experimental measurements, matched by 3D view factor calculations, are used to infer differences in symmetry, relative beam absorption, and cross beam energy transfer (CBET), employing an analytic model. Despite differences in hohlraum dimensions and gas fill, as well as in laser beam pointing and power, we find that laser absorption, CBET, and the cone fraction, at which a symmetric flux is achieved, are similar to within 25% between experiments conducted in the reduced and full scale hohlraums. This work demonstrates a close surrogacy in the dynamics during the first shock between reduced-scale and full scale implosion experiments and is an important step in enabling the increased rate of study for physics associated with inertial confinement fusion. (C) 2015 AIP Publishing LLC.
C1 [Pak, A.; Dewald, E. L.; Landen, O. L.; Milovich, J.; Strozzi, D. J.; Hopkins, L. F. Berzak; Bradley, D. K.; Divol, L.; Ho, D. D.; MacKinnon, A. J.; Meezan, N. B.; Michel, P.; Moody, J. D.; Moore, A. S.; Schneider, M. B.; Town, R. P. J.; Hsing, W. W.; Edwards, M. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Pak, A (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
OI Strozzi, David/0000-0001-8814-3791
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX The authors sincerely thank the NIF operations staff who supported this
work. This work was performed under the auspices of the U.S. Department
of Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344.
NR 19
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U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 122701
DI 10.1063/1.4936803
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400042
ER
PT J
AU Ruiz, JR
Ren, Y
Guttenfelder, W
White, AE
Kaye, SM
Leblanc, BP
Mazzucato, E
Lee, KC
Domier, CW
Smith, DR
Yuh, H
AF Ruiz, J. Ruiz
Ren, Y.
Guttenfelder, W.
White, A. E.
Kaye, S. M.
Leblanc, B. P.
Mazzucato, E.
Lee, K. C.
Domier, C. W.
Smith, D. R.
Yuh, H.
TI Stabilization of electron-scale turbulence by electron density gradient
in national spherical torus experiment
SO PHYSICS OF PLASMAS
LA English
DT Article
ID TRANSPORT; NSTX; SCATTERING; WAVES
AB Theory and experiments have shown that electron temperature gradient (ETG) turbulence on the electron gyro-scale, k(perpendicular to)rho(e) less than or similar to 1, can be responsible for anomalous electron thermal transport in NSTX. Electron scale (high-k) turbulence is diagnosed in NSTX with a high-k microwave scattering system [D. R. Smith et al., Rev. Sci. Instrum. 79, 123501 (2008)]. Here we report on stabilization effects of the electron density gradient on electron-scale density fluctuations in a set of neutral beam injection heated H-mode plasmas. We found that the absence of high-k density fluctuations from measurements is correlated with large equilibrium density gradient, which is shown to be consistent with linear stabilization of ETG modes due to the density gradient using the analytical ETG linear threshold in F. Jenko et al. [Phys. Plasmas 8, 4096 (2001)] and linear gyrokinetic simulations with GS2 [M. Kotschenreuther et al., Comput. Phys. Commun. 88, 128 (1995)]. We also found that the observed power of electron-scale turbulence (when it exists) is anti-correlated with the equilibrium density gradient, suggesting density gradient as a nonlinear stabilizing mechanism. Higher density gradients give rise to lower values of the plasma frame frequency, calculated based on the Doppler shift of the measured density fluctuations. Linear gyrokinetic simulations show that higher values of the electron density gradient reduce the value of the real frequency, in agreement with experimental observation. Nonlinear electron-scale gyrokinetic simulations show that high electron density gradient reduces electron heat flux and stiffness, and increases the ETG nonlinear threshold, consistent with experimental observations. (C) 2015 AIP Publishing LLC.
C1 [Ruiz, J. Ruiz; White, A. E.] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA.
[Ren, Y.; Guttenfelder, W.; Kaye, S. M.; Leblanc, B. P.; Mazzucato, E.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Lee, K. C.] Natl Fus Res Inst, Daejeon, South Korea.
[Domier, C. W.] Univ Calif Davis, Davis, CA 95616 USA.
[Smith, D. R.] Univ Wisconsin, Madison, WI 53706 USA.
[Yuh, H.] Nova Photon Inc, Princeton, NJ 08540 USA.
RP Ruiz, JR (reprint author), MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
FU US. D.O.E. [DE-AC02-09CH11466]; Office of Science of the U.S. Department
of Energy [DE-AC02-05CH11231]
FX The author would like to thank all the coauthors and the NSTX Team. The
author would particularly like to thank N. A. Crocker for enlightening
discussions. This work has been supported by US. D.O.E. Contract No.
DE-AC02-09CH11466. Computer simulations were carried out at the National
Energy Research Scientific Computing Center, supported by the Office of
Science of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231. The digital data for this paper can be found in
http://arks.princeton.edu/ark:/88435/dsp018p58pg29j.
NR 34
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PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 122501
DI 10.1063/1.4936110
PG 13
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400029
ER
PT J
AU Scheiner, B
Baalrud, SD
Yee, BT
Hopkins, MM
Barnat, EV
AF Scheiner, Brett
Baalrud, Scott D.
Yee, Benjamin T.
Hopkins, Matthew M.
Barnat, Edward V.
TI Theory of the electron sheath and presheath
SO PHYSICS OF PLASMAS
LA English
DT Article
ID PLASMA; PROBE; COLLECTION; DISCHARGE
AB Electron sheaths are commonly found near Langmuir probes collecting the electron saturation current. The common assumption is that the probe collects the random flux of electrons incident on the sheath, which tacitly implies that there is no electron presheath and that the flux collected is due to a velocity space truncation of the electron velocity distribution function (EVDF). This work provides a dedicated theory of electron sheaths, which suggests that they are not so simple. Motivated by EVDFs observed in particle-in-cell (PIC) simulations, a 1D model for the electron sheath and presheath is developed. In the model, under low temperature plasma conditions (T-e >> T-i), an electron pressure gradient accelerates electrons in the presheath to a flow velocity that exceeds the electron thermal speed at the sheath edge. This pressure gradient generates large flow velocities compared to what would be generated by ballistic motion in response to the electric field. It is found that in many situations, under common plasma conditions, the electron presheath extends much further into the plasma than an analogous ion presheath. PIC simulations reveal that the ion density in the electron presheath is determined by a flow around the electron sheath and that this flow is due to 2D aspects of the sheath geometry. Simulations also indicate the presence of ion acoustic instabilities excited by the differential flow between electrons and ions in the presheath, which result in sheath edge fluctuations. The 1D model and time averaged PIC simulations are compared and it is shown that the model provides a good description of the electron sheath and presheath. (c) 2015 AIP Publishing LLC.
C1 [Scheiner, Brett; Baalrud, Scott D.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
[Yee, Benjamin T.; Hopkins, Matthew M.; Barnat, Edward V.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Scheiner, B (reprint author), Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
EM brett-scheiner@uiowa.edu
OI scheiner, brett/0000-0001-6002-9129
FU Office of Fusion Energy Science at the U.S. Department of Energy
[DE-AC04-94SL85000]; U.S. Department of Energy, Office of Science,
Office of Workforce Development for Teachers and Scientists, Office of
Science Graduate Student Research (SCGSR) program; DOE
[DE-AC05-06OR23100]
FX This research was supported by the Office of Fusion Energy Science at
the U.S. Department of Energy under Contract No. DE-AC04-94SL85000. The
first author was also supported by the U.S. Department of Energy, Office
of Science, Office of Workforce Development for Teachers and Scientists,
Office of Science Graduate Student Research (SCGSR) program. The SCGSR
program is administered by the Oak Ridge Institute for Science and
Education for the DOE under Contract No. DE-AC05-06OR23100.
NR 39
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U1 5
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 123520
DI 10.1063/1.4939024
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400096
ER
PT J
AU Schneider, MB
MacLaren, SA
Widmann, K
Meezan, NB
Hammer, JH
Yoxall, BE
Bell, PM
Benedetti, LR
Bradley, DK
Callahan, DA
Dewald, EL
Doppner, T
Eder, DC
Edwards, MJ
Guymer, TM
Hinkel, DE
Hohenberger, M
Hsing, WW
Kervin, ML
Kilkenny, JD
Landen, OL
Lindl, JD
May, MJ
Michel, P
Milovich, JL
Moody, JD
Moore, AS
Ralph, JE
Regan, SP
Thomas, CA
Wan, AS
AF Schneider, M. B.
MacLaren, S. A.
Widmann, K.
Meezan, N. B.
Hammer, J. H.
Yoxall, B. E.
Bell, P. M.
Benedetti, L. R.
Bradley, D. K.
Callahan, D. A.
Dewald, E. L.
Doeppner, T.
Eder, D. C.
Edwards, M. J.
Guymer, T. M.
Hinkel, D. E.
Hohenberger, M.
Hsing, W. W.
Kervin, M. L.
Kilkenny, J. D.
Landen, O. L.
Lindl, J. D.
May, M. J.
Michel, P.
Milovich, J. L.
Moody, J. D.
Moore, A. S.
Ralph, J. E.
Regan, S. P.
Thomas, C. A.
Wan, A. S.
TI The size and structure of the laser entrance hole in gas-filled
hohlraums at the National Ignition Facility
SO PHYSICS OF PLASMAS
LA English
DT Article
ID TARGETS; BALANCE; PLASMA
AB At the National Ignition Facility, a thermal X-ray drive is created by laser energy from 192 beams heating the inside walls of a gold cylinder called a "hohlraum." The x-ray drive heats and implodes a fuel capsule. The laser beams enter the hohlraum via laser entrance holes (LEHs) at each end. The LEH radius decreases as heated plasma from the LEH material blows radially inward but this is largely balanced by hot plasma from the high-intensity region in the center of the LEH pushing radially outward. The x-ray drive on the capsule is deduced by measuring the time evolution and spectra of the x-radiation coming out of the LEH and correcting for geometry and for the radius of the LEH. Previously, the LEH radius was measured using time-integrated images in an x-ray band of 3-5 keV (outside the thermal x-ray region). For gas-filled hohlraums, the measurements showed that the LEH radius is larger than that predicted by the standard High Flux radiation-hydrodynamic model by about 10%. A new platform using a truncated hohlraum ("ViewFactor hohlraum") is described, which allows time-resolved measurements of the LEH radius at thermal x-ray energies from two views, from outside the hohlraum and from inside the hohlraum. These measurements show that the LEH radius closes during the low power part of the pulse but opens up again at peak power. The LEH radius at peak power is larger than that predicted by the models by about 15%-20% and does not change very much with time. In addition, time-resolved images in a >4 keV (non-thermal) x-ray band show a ring of hot, optically thin gold plasma just inside the optically thick LEH plasma. The structure of this plasma varies with time and with Cross Beam Energy Transfer. (C) 2015 AIP Publishing LLC.
C1 [Schneider, M. B.; MacLaren, S. A.; Widmann, K.; Meezan, N. B.; Hammer, J. H.; Yoxall, B. E.; Bell, P. M.; Benedetti, L. R.; Bradley, D. K.; Callahan, D. A.; Dewald, E. L.; Doeppner, T.; Eder, D. C.; Edwards, M. J.; Hinkel, D. E.; Hsing, W. W.; Kervin, M. L.; Landen, O. L.; Lindl, J. D.; May, M. J.; Michel, P.; Milovich, J. L.; Moody, J. D.; Moore, A. S.; Ralph, J. E.; Thomas, C. A.; Wan, A. S.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Guymer, T. M.; Moore, A. S.] Atom Weap Estab, Reading RG7 4PR, Berks, England.
[Hohenberger, M.; Regan, S. P.] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
[Kilkenny, J. D.] Gen Atom, San Diego, CA 92186 USA.
RP Schneider, MB (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA.
EM schneider5@llnl.gov
FU Lawrence Livermore National Security, LLC, (LLNS) [DE-AC52-07NA27344]
FX The authors would like to acknowledge the efforts of the NIF Operations,
Laser Performance, Target Diagnostics, and Target Fabrication Teams.
This work was performed under the auspices of the Lawrence Livermore
National Security, LLC, (LLNS) under Contract No. DE-AC52-07NA27344.
NR 50
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Z9 4
U1 3
U2 13
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 122705
DI 10.1063/1.4937369
PG 16
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400046
ER
PT J
AU Sydorenko, D
Kaganovich, ID
Chen, L
Ventzek, PLG
AF Sydorenko, D.
Kaganovich, I. D.
Chen, L.
Ventzek, P. L. G.
TI Generation of anomalously energetic suprathermal electrons by an
electron beam interacting with a nonuniform plasma
SO PHYSICS OF PLASMAS
LA English
DT Article
ID DENSITY GRADIENTS; FIELD; WAVE
AB Generation of anomalously energetic suprathermal electrons was observed in simulation of a high-voltage dc discharge with electron emission from the cathode. An electron beam produced by the emission interacts with the nonuniform plasma in the discharge via a two-stream instability. The energy transfer from the beam to the plasma electrons is ensured by the plasma nonuniformity. The electron beam excites plasma waves whose wavelength and phase speed gradually decrease towards anode. The waves with short wavelength near the anode accelerate plasma bulk electrons to suprathermal energies. The sheath near the anode reflects some of the accelerated electrons back into the plasma. These electrons travel through the plasma, reflect near the cathode, and enter the accelerating area again but with a higher energy than before. Such particles are accelerated to energies much higher than after the first acceleration. This mechanism plays a role in explaining earlier experimental observations of energetic suprathermal electrons in similar discharges. (C) 2015 AIP Publishing LLC.
C1 [Sydorenko, D.] Univ Alberta, Edmonton, AB T6G 2E1, Canada.
[Kaganovich, I. D.] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Chen, L.; Ventzek, P. L. G.] Tokyo Electron Amer, Austin, TX 78741 USA.
RP Sydorenko, D (reprint author), Univ Alberta, Edmonton, AB T6G 2E1, Canada.
FU U.S. Department of Energy
FX D. Sydorenko and I. D. Kaganovich are supported by the U.S. Department
of Energy.
NR 30
TC 4
Z9 4
U1 2
U2 5
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 123510
DI 10.1063/1.4937785
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400086
ER
PT J
AU Velikovich, AL
Schmit, PF
AF Velikovich, A. L.
Schmit, P. F.
TI Bell-Plesset effects in Rayleigh-Taylor instability of finite-thickness
spherical and cylindrical shells
SO PHYSICS OF PLASMAS
LA English
DT Article
ID NONLINEAR EVOLUTION; THIN-LAYER; PINCHES
AB Bell-Plesset (BP) effects account for the influence of global convergence or divergence of the fluid flow on the evolution of the interfacial perturbations embedded in the flow. The development of the Rayleigh-Taylor instability in radiation-driven spherical capsules and magnetically-driven cylindrical liners necessarily includes a significant contribution from BP effects due to the time dependence of the radius, velocity, and acceleration of the unstable surfaces or interfaces. An analytical model is presented that, for an ideal incompressible fluid and small perturbation amplitudes, exactly evaluates the BP effects in finite-thickness shells through acceleration and deceleration phases. The time-dependent dispersion equations determining the "instantaneous growth rate" are derived. It is demonstrated that by integrating this approximate growth rate over time, one can accurately evaluate the number of perturbation e-foldings during the inward acceleration phase of the implosion. In the limit of small shell thickness, exact thin-shell perturbation equations and approximate thin-shell dispersion equations are obtained, generalizing the earlier results [E. G. Harris, Phys. Fluids 5, 1057 (1962); E. Ott, Phys. Rev. Lett. 29, 1429 (1972); A. B. Bud'ko et al., Phys. Fluids B 2, 1159 (1990)]. (C) 2015 AIP Publishing LLC.
C1 [Velikovich, A. L.] US Navy, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Schmit, P. F.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Velikovich, AL (reprint author), US Navy, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
OI Velikovich, Alexander/0000-0002-2782-6246
FU National Nuclear Security Administration of DOE; Laboratory Directed
Research and Development (LDRD) Program [165746]; Sandia Corporation
under its U.S. Department of Energy [DE-AC04-94AL85000]
FX The authors are grateful to D. B. Sinars, K. L. Peterson, R. D. McBride,
A. B. Sefkow, M. P. Desjarlais, J. L. Giuliani, D. D. Ryutov, M. A.
Dorf, and E. L. Ruden for helpful discussions. This research was
supported by the National Nuclear Security Administration of DOE, and in
part by an appointment of P.F.S. to the Sandia National Laboratories
Truman Fellowship in National Security Science and Engineering, which is
part of the Laboratory Directed Research and Development (LDRD) Program,
Project No. 165746, and sponsored by Sandia Corporation (a wholly owned
subsidiary of Lockheed Martin Corporation) as Operator of Sandia
National Laboratories under its U.S. Department of Energy Contract No.
DE-AC04-94AL85000.
NR 39
TC 5
Z9 5
U1 1
U2 3
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 122711
DI 10.1063/1.4938272
PG 16
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400052
ER
PT J
AU Zemedkun, SE
Che, S
Chen, Y
Domier, CW
Luhmann, NC
Munsat, T
Parker, SE
Tobias, B
Wan, W
Yu, L
AF Zemedkun, S. E.
Che, S.
Chen, Y.
Domier, C. W.
Luhmann, N. C., Jr.
Munsat, T.
Parker, S. E.
Tobias, B.
Wan, W.
Yu, L.
TI Spatially resolved measurements of two-dimensional turbulent structures
in DIII-D plasmas
SO PHYSICS OF PLASMAS
LA English
DT Article
ID ELECTRON-TEMPERATURE FLUCTUATIONS; EXPERIMENTAL TOKAMAK-UPGRADE;
CYCLOTRON EMISSION; GYROKINETIC SIMULATION; MODE TURBULENCE; DENSITY
PEAKING; TRANSPORT; CORE; MICROTURBULENCE; COLLISIONALITY
AB Two-dimensional observations of spatially coherent electron temperature fluctuations at drift-wave scales (k similar to 1 cm(-1)) have been made using the electron cyclotron emission imaging diagnostic on the DIII-D tokamak. These measurements enable the extraction of spectral properties, including poloidal dispersion relations. Temperature fluctuation levels are found to be (T) over tilde (e)= < T-e > = 1: 2%, and the phase velocity of the fluctuations is found to be constant across frequencies, consistent with modes having real frequencies low compared to the rotation-induced Doppler shifts. Comparisons with radially global linear gyrokinetic simulations suggest that the observed modes may be trapped electron modes. (C) 2015 AIP Publishing LLC.
C1 [Zemedkun, S. E.; Chen, Y.; Munsat, T.; Parker, S. E.; Wan, W.] Univ Colorado, Ctr Integrated Plasma Studies, Boulder, CO 80309 USA.
[Che, S.; Domier, C. W.; Luhmann, N. C., Jr.; Yu, L.] Univ Calif Davis, Davis, CA 95616 USA.
[Tobias, B.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Zemedkun, SE (reprint author), Univ Colorado, Ctr Integrated Plasma Studies, Boulder, CO 80309 USA.
EM Samuel.Zemedkun@Colorado.EDU
FU U.S. Department of Energy [DE-SC0003913, DE-FG02-99ER54531,
DE-AC02-09CH11466, DE-FG02-08ER54954, DE-FC02-04ER54698]
FX The authors gratefully acknowledge Brian Grierson, Jon Hillesheim, and
James DeBoo for their help in this work. This work was supported by U.S.
Department of Energy Contract Nos. DE-SC0003913, DE-FG02-99ER54531,
DE-AC02-09CH11466, DE-FG02-08ER54954, and DE-FC02-04ER54698.
NR 63
TC 1
Z9 1
U1 1
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2015
VL 22
IS 12
AR 122508
DI 10.1063/1.4938032
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA DA0AZ
UT WOS:000367460400036
ER
PT J
AU Brown, K
Phillips, M
Grulke, C
Yoon, M
Young, B
McDougall, R
Leonard, J
Lu, JT
Lefew, W
Tan, YM
AF Brown, Kathleen
Phillips, Martin
Grulke, Christopher
Yoon, Miyoung
Young, Bruce
McDougall, Robin
Leonard, Jeremy
Lu, Jingtao
Lefew, William
Tan, Yu-Mei
TI Reconstructing exposures from biomarkers using exposure-pharmacokinetic
modeling - A case study with carbaryl
SO REGULATORY TOXICOLOGY AND PHARMACOLOGY
LA English
DT Article
DE Exposure reconstruction; Biomarker interpretation; Pharmacokinetic
modeling; Physiologically based pharmacokinetic model; Carbaryl; Markov
Chain Monte Carlo; Discretized Bayesian; Exposure conversion factor;
CARES; Population-based biomonitoring
ID VOLATILE ORGANIC-COMPOUNDS; HUMAN BIOMONITORING DATA; TO-OUTCOME MODEL;
INSECTICIDE RESIDUES; REVERSE DOSIMETRY; DIETARY EXPOSURES;
TRICHLOROETHYLENE; EPIDEMIOLOGY; PERCHLORATE; KINETICS
AB Sources of uncertainty involved in exposure reconstruction for short half-life chemicals were characterized using computational models that link external exposures to biomarkers. Using carbaryl as an example, an exposure model, the Cumulative and Aggregate Risk Evaluation System (CARES), was used to generate time-concentration profiles for 500 virtual individuals exposed to carbaryl. These exposure profiles were used as inputs into a physiologically based pharrnacokinetic (PBPK) model to predict urinary biomarker concentrations. These matching dietary intake levels and biomarker concentrations were used to (1) compare three reverse dosimetry approaches based on their ability to predict the central tendency of the intake dose distribution; and (2) identify parameters necessary for a more accurate exposure reconstruction. This study illustrates the trade-offs between using non-iterative reverse dosimetry methods that are fast, less precise and iterative methods that are slow, more precise. This study also intimates the necessity of including urine flow rate and elapsed time between last dose and urine sampling as part of the biomarker sampling collection for better interpretation of urinary biomarker data of short biological half-life chemicals. Resolution of these critical data gaps can allow exposure reconstruction methods to better predict population-level intake doses from large biomonitoring studies. Published by Elsevier Ltd.
C1 [Brown, Kathleen; Tan, Yu-Mei] US EPA, Natl Exposure Res Lab, Durham, NC 27709 USA.
[Phillips, Martin] Minnesota Dept Hlth, St Paul, MN USA.
[Grulke, Christopher] Lockheed Martin, Durham, NC USA.
[Yoon, Miyoung] Hamner Inst Hlth Sci, Durham, NC USA.
[Young, Bruce] Bayer CropSci, Durham, NC USA.
[McDougall, Robin] Astra Zeneca, Boston, MA USA.
[Leonard, Jeremy; Lu, Jingtao] Oak Ridge Inst Sci & Educ, Oak Ridge, TN USA.
[Lefew, William] Meemir Consulting, Durham, NC USA.
RP Tan, YM (reprint author), US EPA, Natl Exposure Res Lab, Durham, NC 27709 USA.
EM tan.cecilia@epa.gov
OI Phillips, Martin/0000-0002-6282-529X; McDougall,
Robin/0000-0002-5850-9075
FU Oak Ridge Institute for Science and Education's Research Participation
Program at the US-Environmental Protection Agency
FX The authors would like to thank Yuching Yang at the Hamner Institute for
clarifications regarding the human PBPK model for carbaryl. The authors
are also grateful to Drs. Rogelio Tornero-Velez, Lisa Baxter, and Roy
Fortmann at the EPA for their review and comments. Jingtao Lu and Jeremy
Leonard are funded by the Oak Ridge Institute for Science and
Education's Research Participation Program at the US-Environmental
Protection Agency.
NR 51
TC 1
Z9 1
U1 0
U2 8
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0273-2300
EI 1096-0295
J9 REGUL TOXICOL PHARM
JI Regul. Toxicol. Pharmacol.
PD DEC
PY 2015
VL 73
IS 3
BP 689
EP 698
DI 10.1016/j.yrtph.2015.10.031
PG 10
WC Medicine, Legal; Pharmacology & Pharmacy; Toxicology
SC Legal Medicine; Pharmacology & Pharmacy; Toxicology
GA CZ7KX
UT WOS:000367279400001
PM 26545325
ER
PT J
AU Gao, Y
Wkram, CH
Duan, JJ
Chou, JR
AF Gao, Ying
Wkram, Chris Hadri
Duan, Jiajie
Chou, Jarong
TI A Novel Energy-Aware Distributed Clustering Algorithm for Heterogeneous
Wireless Sensor Networks in the Mobile Environment
SO SENSORS
LA English
DT Article
DE heterogeneous wireless sensor networks; sensor computing; distributed
clustering algorithm; collaborative information processing; energy
efficient; mobile sensor
ID PROTOCOL; SCHEME
AB In order to prolong the network lifetime, energy-efficient protocols adapted to the features of wireless sensor networks should be used. This paper explores in depth the nature of heterogeneous wireless sensor networks, and finally proposes an algorithm to address the problem of finding an effective pathway for heterogeneous clustering energy. The proposed algorithm implements cluster head selection according to the degree of energy attenuation during the network's running and the degree of candidate nodes' effective coverage on the whole network, so as to obtain an even energy consumption over the whole network for the situation with high degree of coverage. Simulation results show that the proposed clustering protocol has better adaptability to heterogeneous environments than existing clustering algorithms in prolonging the network lifetime.
C1 [Gao, Ying] S China Univ Technol, Coll Comp Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China.
[Wkram, Chris Hadri] Univ Calif, Lawrence Berkeley Natl Lab, Oakland, CA 94612 USA.
[Duan, Jiajie] Yun Nan Elect Power Test & Res Inst Grp CO, Kunming 650217, Peoples R China.
[Chou, Jarong] Michigan State Univ, Coll Engn, E Lansing, MI 48824 USA.
RP Chou, JR (reprint author), Michigan State Univ, Coll Engn, E Lansing, MI 48824 USA.
EM gaoying@scut.edu.cn; chrish.w.zhang@gmail.com; duanzealot@163.com;
jahhorog.chou@gmail.com
FU National Natural Science Foundation of China [51204071]; Fundamental
Research Funds for the Central Universities [2013ZZ0047]; Science and
Technology Planning Project of Guangdong Province [2012B010100019]
FX This project is supported by the National Natural Science Foundation of
China which is under grant No. 51204071, the Fundamental Research Funds
for the Central Universities (2013ZZ0047), and the Science and
Technology Planning Project of Guangdong Province (2012B010100019).
NR 29
TC 0
Z9 0
U1 1
U2 7
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 1424-8220
J9 SENSORS-BASEL
JI Sensors
PD DEC
PY 2015
VL 15
IS 12
BP 31108
EP 31124
DI 10.3390/s151229836
PG 17
WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
SC Chemistry; Electrochemistry; Instruments & Instrumentation
GA DA1EM
UT WOS:000367539100084
PM 26690440
ER
PT J
AU Yue, YF
Fulvio, PF
Dai, S
AF Yue, Yanfeng
Fulvio, Pasquale F.
Dai, Sheng
TI Hierarchical Metal-Organic Framework Hybrids: Perturbation-Assisted
Nanofusion Synthesis
SO ACCOUNTS OF CHEMICAL RESEARCH
LA English
DT Review
ID TEMPLATE-FREE SYNTHESIS; PRUSSIAN BLUE; MESOPOROUS SILICA; SURFACE
FUNCTIONALIZATION; DIRECTED SYNTHESIS; GAS-ADSORPTION; ION-EXCHANGE;
MOLECULES; ENCAPSULATION; CATALYSIS
AB CONSPECTUS: Metal-organic frameworks (MOFs) represent a new family of microporous materials; however, microporous-mesoporous hierarchical MOF materials have been less investigated because of the lack of simple, reliable methods to introduce mesopores to the crystalline microporous particles. State-of-the-art MOF hierarchical materials have been prepared by ligand extension methods or by using a template, resulting in intrinsic mesopores of longer ligands or replicated pores from template agents, respectively. However, mesoporous MOF materials obtained through ligand extension often collapse in the absence of guest molecules, which dramatically reduces the size of the pore aperture. Although the template-directed strategy allows for the preparation of hierarchical materials with larger mesopores, the latter requires a template removal step, which may result in the collapse of the implemented mesopores. Recently, a general template-free synthesis of hierarchical microporous crystalline frameworks, such as MOFs and Prussian blue analogues (PBAs), has been reported. This new method is based on the kinetically controlled precipitation (perturbation), with simultaneous condensation and redissolution of polymorphic nanocrystallites in the mother liquor. This method further eliminates the use of extended organic ligands and the micropores do not collapse upon removal of trapped guest solvent molecules, thus yielding hierarchical MOF materials with intriguing porosity in the gram scale. The hierarchical MOP materials prepared in this way exhibited exceptional properties when tested for the adsorption of large organic dyes over their corresponding microporous frameworks, due to the enhanced pore accessibility and electrolyte diffusion within the mesopores.
As for PBAs, the pore size distribution of these materials can be tailored by changing the metals substituting Fe cations in the PB lattice. For these, the textural mesopores increased from approximately 10 nm for Cu analogue (mesoCuHCF), to 16 nm in Co substituted compound (mesoCoHCF), and to as large as 30 nm for the Ni derivative (mesoNiHCF). While bulk PB and analogues have a higher capacitance than hierarchical analogues for Na-batteries, the increased accessibility to the microporous channels of PBAs allow for faster intercalated ion exchange and diffusion than in bulk PBA crystals. Thus, hierarchical PBAs are promising candidates for electrodes in future electrochemical energy storage devices with faster charge discharge rates than batteries, namely pseudocapacitors. Finally, this new synthetic method opens the possibility to prepare hierarchical materials having bimodal distribution of mesopores, and to tailor the structural properties of MOFs for different applications, including contrasting agents for MRI, and drug delivery.
C1 [Yue, Yanfeng; Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Fulvio, Pasquale F.] Univ Puerto Rico, Dept Chem, San Juan, PR 00931 USA.
[Dai, Sheng] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Yue, Yanfeng] Sul Ross State Univ, Dept Biol Geol & Phys Sci, Alpine, TX 79832 USA.
RP Yue, YF (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM yanfeng.yue@sulross.edu; dais@ornl.gov
RI Dai, Sheng/K-8411-2015; Fulvio, Pasquale/B-2968-2014
OI Dai, Sheng/0000-0002-8046-3931; Fulvio, Pasquale/0000-0001-7580-727X
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences, US Department of Energy [DE-AC05-00OR22725]; Oak
Ridge National Laboratory
FX This research was sponsored by the Division of Chemical Sciences,
Geosciences, and Biosciences, Office of Basic Energy Sciences, US
Department of Energy, under Contract DE-AC05-00OR22725 with Oak Ridge
National Laboratory, which is managed and operated by UT-Battelle, LLC.
NR 57
TC 8
Z9 8
U1 67
U2 228
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0001-4842
EI 1520-4898
J9 ACCOUNTS CHEM RES
JI Accounts Chem. Res.
PD DEC
PY 2015
VL 48
IS 12
BP 3044
EP 3052
DI 10.1021/acs.accounts.5b00349
PG 9
WC Chemistry, Multidisciplinary
SC Chemistry
GA CZ1NB
UT WOS:000366871400007
PM 26636772
ER
PT J
AU Waller, PJ
Gandara, F
Yaghi, OM
AF Waller, Peter J.
Gandara, Felipe
Yaghi, Omar M.
TI Chemistry of Covalent Organic Frameworks
SO ACCOUNTS OF CHEMICAL RESEARCH
LA English
DT Review
ID POROUS POLYMER NETWORKS; RETICULAR CHEMISTRY; DESIGNED SYNTHESIS;
TARGETED SYNTHESIS; THIN-FILMS; CRYSTALLINE; STABILITY; CONSTRUCTION;
DELAMINATION; ADSORPTION
AB CONSPECTUS: Linking organic molecules by covalent bonds into extended solids typically generates amorphous, disordered materials. The ability to develop strategies for obtaining crystals of such solids is of interest because it opens the way for precise control of the geometry and functionality of the extended structure, and the stereochemical orientation of its constituents. Covalent organic frameworks (COFs) are a new class of porous covalent organic structures whose backbone is composed entirely of light elements (B, C, N, O, Si) that represent a successful demonstration of how crystalline materials of covalent solids can be achieved. COFs are made by combination of organic building units covalently linked into extended structures to make crystalline materials. The attainment of crystals is done by several techniques in which a balance is struck between the thermodynamic reversibility of the linking reactions and their kinetics. This success has led to the expansion of COF materials to include organic units linked by these strong covalent bonds: B-O, C N, B N, and B O Si.
Since the organic constituents of COFs, when linked, do not undergo significant change in their overall geometry, it has been possible to predict the structures of the resulting COFs, and this advantage has facilitated their characterization using powder X-ray diffraction (PXRD) techniques. It has also allowed for the synthesis of COF structures by design and for their formation with the desired composition, pore size, and aperture. In practice, the modeled PXRD pattern for a given expected COF is compared with the experimental one, and depending on the quality of the match, this is used as a starting point for solving and then refining the crystal structure of the target COF. These characteristics make COFs an attractive class of new porous materials. Accordingly, they have been used as gas storage materials for energy applications, solid supports for catalysis, and optoelectronic devices. A large and growing library of linkers amenable to the synthesis of COFs is now available, and new COFs and topologies made by reticular synthesis are being reported. Much research is also directed toward the development of new methods of linking organic building units to generate other crystalline COFs. These efforts promise not only new COF chemistry and materials, but also the chance to extend the precision of molecular covalent chemistry to extended solids.
C1 [Waller, Peter J.; Yaghi, Omar M.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Waller, Peter J.; Yaghi, Omar M.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Gandara, Felipe] CSIC, Inst Ciencia Mat Madrid, Dept Nuevas Arquitecturas Quim Mat, E-28049 Madrid, Spain.
[Yaghi, Omar M.] King Abdulaziz City Sci & Technol, Riyadh 11442, Saudi Arabia.
RP Gandara, F (reprint author), CSIC, Inst Ciencia Mat Madrid, Dept Nuevas Arquitecturas Quim Mat, Sor Juana Ines de la Cruz 3, E-28049 Madrid, Spain.
EM gandara@icmm.csic.es; yaghi@berkeley.edu
RI Gandara, Felipe/B-9198-2013;
OI Gandara, Felipe/0000-0002-1671-6260; Yaghi, Omar/0000-0002-5611-3325;
Waller, Peter/0000-0002-4013-8827
FU BASF (Ludwigshafen, Germany); Department of Energy (Office of Basic
Science); King Abdulaziz City for Science and Technology; Spanish
Ministry of Economy and Competitiveness
FX P.J.W. and O.M.Y. thank BASF (Ludwigshafen, Germany), the Department of
Energy (Office of Basic Science), and the King Abdulaziz City for
Science and Technology for financial support. F.G. acknowledges the
Spanish Ministry of Economy and Competitiveness for funding through the
"Juan de la Cierva" program.
NR 49
TC 90
Z9 90
U1 186
U2 542
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0001-4842
EI 1520-4898
J9 ACCOUNTS CHEM RES
JI Accounts Chem. Res.
PD DEC
PY 2015
VL 48
IS 12
BP 3053
EP 3063
DI 10.1021/acs.accounts.5b00369
PG 11
WC Chemistry, Multidisciplinary
SC Chemistry
GA CZ1NB
UT WOS:000366871400008
PM 26580002
ER
PT J
AU Onses, MS
Wan, L
Liu, XY
Kiremitler, NB
Yilmaz, H
Nealey, PF
AF Onses, M. Serdar
Wan, Lei
Liu, Xiaoying
Kiremitler, N. Burak
Yilmaz, Hatice
Nealey, Paul F.
TI Self-Assembled Nanoparticle Arrays on Chemical Nanopatterns Prepared
Using Block Copolymer Lithography
SO ACS MACRO LETTERS
LA English
DT Article
ID POLY(ETHYLENE GLYCOL) BRUSHES; AU NANOPARTICLES; GOLD NANOPARTICLES;
POLYMER BRUSHES; FILMS; PATTERNS; SURFACES; FABRICATION; RESOLUTION;
DOTS
AB We present a high-throughput and inexpensive fabrication approach that uses self-assembled block copolymer (BCP) films as templates to generate dense nanoscale chemical patterns of polymer brushes for the selective immobilization of Au nanoparticles (NPs). A cross-linked random copolymer mat that contains styrene and methyl methacrylate units serves both as a base layer for perpendicular assembly of nanoscale domains of poly(styrene-block-methyl methacrylate) (PS-b-PMMA) films and as a nonadsorbing background layer that surrounds the chemical patterns. The selective removal of the PMMA block and the underlying mat via oxygen plasma etching generates binding sites which are then functionalized with poly(2-vinylpyridine) (P2VP) brushes. Au NPs with a diameter of 13 nm selectively immobilize on the patterned P2VP brushes. An essential aspect in fabricating high quality chemical patterns is the superior behavior of methyl methacrylate containing cross-linked mats in retaining their chemistry during the grafting of P2VP brushes. The use of BCPs with different molecular weights and volume fractions allows for preparation of chemical patterns with different geometries, sizes, and pitches for generating arrays of single particles that hold great promise for applications that range from molecular sensing to optical devices.
C1 [Onses, M. Serdar; Kiremitler, N. Burak; Yilmaz, Hatice] Erciyes Univ, Nanotechnol Res Ctr ERNAM, Dept Mat Sci & Engn, TR-38039 Kayseri, Turkey.
[Wan, Lei] HGST, San Jose Res Ctr, San Jose, CA 95135 USA.
[Liu, Xiaoying; Nealey, Paul F.] Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA.
[Nealey, Paul F.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Nealey, PF (reprint author), Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA.
EM nealey@uchicago.edu
FU Erciyes University [FBA-2014-5600]; U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences-Materials Science
[DE-AC02-06CH11357]
FX This work was supported by the Research Fund of the Erciyes University
(Project Number: FBA-2014-5600) and the U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences-Materials Science
(Contract No. DE-AC02-06CH11357).
NR 39
TC 3
Z9 3
U1 14
U2 68
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2161-1653
J9 ACS MACRO LETT
JI ACS Macro Lett.
PD DEC
PY 2015
VL 4
IS 12
BP 1356
EP 1361
DI 10.1021/acsmacrolett.5b00644
PG 6
WC Polymer Science
SC Polymer Science
GA CZ1MI
UT WOS:000366869500010
ER
PT J
AU Thelen, JL
Wu, SL
Jayier, AE
Srinivasan, V
Balsara, NP
Patel, SN
AF Thelen, Jacob L.
Wu, Shao-Ling
Jayier, Anna E.
Srinivasan, Venkat
Balsara, Nitash P.
Patel, Shrayesh N.
TI Relationship between Mobility and Lattice Strain in Electrochemically
Doped Poly(3-hexylthiophene)
SO ACS MACRO LETTERS
LA English
DT Article
ID FIELD-EFFECT MOBILITY; X-RAY-DIFFRACTION; LITHIUM BATTERY ELECTRODES;
CHARGE-TRANSPORT; MOLECULAR-WEIGHT; REGIOREGULAR POLY(3-HEXYLTHIOPHENE);
CONJUGATED POLYMERS; SEMICONDUCTING POLYMERS; CARRIER MOBILITIES; EFFECT
TRANSISTORS
AB Conjugated semiconducting polymers, such as poly(3-hexylthiophene) (P3HT), are poised to play an integral role in the development of organic electronic devices; however, their performance is governed by factors that are intrinsically coupled: dopant concentration, carrier mobility, crystal structure, and mesoscale morphology. We utilize synchrotron X-ray scattering and electrochemical impedance spectroscopy to probe the crystal structure and electronic properties of P3HT in situ during electrochemical doping. We show that doping strains the crystalline domains, coincident with an exponential increase in hole mobility. We believe these observations provide guidance for the development of improved theoretical models for charge transport in semiconducting polymers.
C1 [Thelen, Jacob L.; Balsara, Nitash P.; Patel, Shrayesh N.] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
[Thelen, Jacob L.; Balsara, Nitash P.; Patel, Shrayesh N.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Thelen, Jacob L.; Wu, Shao-Ling; Jayier, Anna E.; Srinivasan, Venkat; Balsara, Nitash P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, JCESR, Berkeley, CA 94720 USA.
[Wu, Shao-Ling; Jayier, Anna E.; Srinivasan, Venkat; Balsara, Nitash P.; Patel, Shrayesh N.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
RP Patel, SN (reprint author), Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA.
EM shrayesh@berkeley.edu
FU Joint Center for Energy Storage Research, an Energy Innovation Hub -
U.S. Department of Energy (DOE), Office of Science, Basic Energy
Sciences (BES); Office of Science, Office of Basic Energy Sciences, of
the U.S. Department of Energy [DE-AC02-05CH11231]
FX This work was primarily supported by the Joint Center for Energy Storage
Research, an Energy Innovation Hub funded by the U.S. Department of
Energy (DOE), Office of Science, Basic Energy Sciences (BES). X-ray
scattering experiments were performed at Lawrence Berkeley National
Laboratory's Advance Light Source, Beamline 7.3.3. Beamline 7.3.3 of the
Advanced Light Source is supported by the Director of the Office of
Science, Office of Basic Energy Sciences, of the U.S. Department of
Energy under Contract No. DE-AC02-05CH11231.
NR 41
TC 1
Z9 1
U1 8
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2161-1653
J9 ACS MACRO LETT
JI ACS Macro Lett.
PD DEC
PY 2015
VL 4
IS 12
BP 1386
EP 1391
DI 10.1021/acsmacrolett.5b00827
PG 6
WC Polymer Science
SC Polymer Science
GA CZ1MI
UT WOS:000366869500016
ER
PT J
AU Mitrofanov, O
Brener, I
Luk, TS
Reno, JL
AF Mitrofanov, Oleg
Brener, Igal
Luk, Ting Shan
Reno, John L.
TI Photoconductive Terahertz Near-Field Detector with a Hybrid Nanoantenna
Array Cavity
SO ACS PHOTONICS
LA English
DT Article
DE nanoantenna; terahertz; near-field microscopy; light trapping; plasmons
ID WAVE-GUIDE; OPTICAL-ABSORPTION; MIE RESONANCES; ENHANCEMENT;
OPTOELECTRONICS; DIFFRACTION; PHOTOMIXER; GENERATION; APERTURES;
EMISSION
AB Nanoscale structuring of optical materials leads to modification of their properties and can be used for improving efficiencies of photonic devices and for enabling new functionalities. In ultrafast optoelectronic switches for generation and detection of terahertz (THz) radiation, incorporation of nanostructures allows us to overcome inherent limitations of photoconductive materials. We propose and demonstrate a nanostructured photoconductive THz detector for sampling highly localized THz fields, down to the level of lambda/150. The nanostructure that consists of an array of optical nanoantennas and a distributed Bragg reflector forms a hybrid cavity, which traps optical gate pulses within the photoconductive layer. The effect of photon trapping is observed as enhanced absorption at a designed wavelength. This optically thin photoconductive THz detector allows us to detect highly confined evanescent THz fields coupled through a deeply subwavelength aperture as small as 2 pm (lambda/150 at 1 THz). By monolithically integrating the THz detector with apertures ranging from 2 to 5 mu m we realize higher spatial resolution and higher sensitivity in aperture-type THz near-field microscopy and THz time-domain spectroscopy.
C1 [Mitrofanov, Oleg] UCL, Elect & Elect Engn, London WC1E 7JE, England.
[Mitrofanov, Oleg; Brener, Igal; Luk, Ting Shan; Reno, John L.] Sandia Natl Labs, Ctr Integrated Technol, Albuquerque, NM 87185 USA.
[Brener, Igal; Luk, Ting Shan; Reno, John L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Mitrofanov, O (reprint author), UCL, Elect & Elect Engn, London WC1E 7JE, England.
EM o.mitrofanov@ucl.ac.uk
RI Mitrofanov, Oleg/C-1938-2008
OI Mitrofanov, Oleg/0000-0003-3510-2675
FU Royal Society [UF 130493]; U.S. Department of Energy's National Nuclear
Security Administration [DE-AC04-94AL85000]
FX This work is supported by the Royal Society (Grant No. UF 130493), and
it was performed at UCL and in part at the Center for Integrated
Nanotechnologies, an Office of Science User Facility operated for the
U.S. Department of Energy (DOE) Office of Science. Sandia National
Laboratories is a multiprogram laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the U.S. Department of Energy's National Nuclear Security
Administration under contract DE-AC04-94AL85000.
NR 43
TC 10
Z9 10
U1 5
U2 29
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2330-4022
J9 ACS PHOTONICS
JI ACS Photonics
PD DEC
PY 2015
VL 2
IS 12
BP 1763
EP 1768
DI 10.1021/acsphotonics.5b00475
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Optics; Physics, Applied; Physics, Condensed Matter
SC Science & Technology - Other Topics; Materials Science; Optics; Physics
GA CZ1SC
UT WOS:000366884600018
ER
PT J
AU Krishnamurthy, M
Hennelly, SP
Dale, T
Starkenburg, SR
Marti-Arbona, R
Fox, DT
Twary, SN
Sanbonmatsu, KY
Unkefer, CJ
AF Krishnamurthy, Malathy
Hennelly, Scott P.
Dale, Taraka
Starkenburg, Shawn R.
Marti-Arbona, Ricardo
Fox, David T.
Twary, Scott N.
Sanbonmatsu, Karissa Y.
Unkefer, Clifford J.
TI Tunable Riboregulator Switches for Post-transcriptional Control of Gene
Expression
SO ACS SYNTHETIC BIOLOGY
LA English
DT Article
DE riboregulators; translational control; gene expression; synthetic
biology; pathway engineering
ID FLUORESCENT PROTEIN GENE; SYNTHETIC BIOLOGY; ESCHERICHIA-COLI;
SINGLE-COPY; SMALL RNAS; TRANSLATION; REGULATORS; BACTERIA; PATHWAY;
OPTIMIZATION
AB Until recently, engineering strategies for altering gene expression have focused on transcription control using strong inducible promoters or one of several methods to knock down wasteful genes. Recently, synthetic riboregulators have been developed for translational regulation of gene expression. Here, we report a new modular synthetic riboregulator class that has the potential to finely tune protein expression and independently control the concentration of each enzyme in an engineered metabolic pathway. This development is important because the most straightforward approach to altering the flux through a particular metabolic step is to increase or decrease the concentration of the enzyme. Our design includes a cis-repressor at the 5' end of the mRNA that forms a stem-loop helix, occluding the ribosomal binding sequence and blocking translation. A trans-expressed activating-RNA frees the ribosomal-binding sequence, which turns on translation. The overall architecture of the riboregulators is designed using Watson Crick base-pairing stability. We describe here a cis-repressor that can completely shut off translation of antibiotic-resistance reporters and a trans-activator that restores translation. We have established that it is possible to use these riboregulators to achieve translational control of gene expression over a wide dynamic range. We have also found that a targeting sequence can be modified to develop riboregulators that can, in principle, independently regulate translation of many genes. In a selection experiment, we demonstrated that by subtly altering the sequence of the trans-activator it is possible to alter the ratio of the repressed and activated states and to achieve intermediate translational control.
C1 [Krishnamurthy, Malathy; Dale, Taraka; Starkenburg, Shawn R.; Marti-Arbona, Ricardo; Fox, David T.; Twary, Scott N.; Unkefer, Clifford J.] Los Alamos Natl Lab, Biosci Div, Bioenergy & Biome Sci, Los Alamos, NM 87545 USA.
[Hennelly, Scott P.; Sanbonmatsu, Karissa Y.] Los Alamos Natl Lab, Div Theoret, Theoret Biol & Biophys, Los Alamos, NM 87545 USA.
RP Sanbonmatsu, KY (reprint author), Los Alamos Natl Lab, Biosci Div, Bioenergy & Biome Sci, Los Alamos, NM 87545 USA.
EM kys@lanl.gov; cju@lanl.gov
OI Twary, Scott/0000-0002-5074-6658
FU U.S. Department of Energy through the LANL/LDRD Program
FX We gratefully acknowledge the support of the U.S. Department of Energy
through the LANL/LDRD Program for this work. We thank Dr. Sathish
Rajamani for providing the plasmid template for the LUX operon and
scientific discussions. We also thank Lucas B. Harrington for providing
plasmid pZ0 for the flow cytometry and subdoning studies and Dr. Donald
A. Bryant for the yfp gene, which was generously donated as part of the
pAQ1Ex-cpc plasmid. We thank Dr. Virginia A. Unkefer for editing this
manuscript.
NR 37
TC 2
Z9 3
U1 6
U2 18
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2161-5063
J9 ACS SYNTH BIOL
JI ACS Synth. Biol.
PD DEC
PY 2015
VL 4
IS 12
BP 1326
EP 1334
DI 10.1021/acssynbio.5b00041
PG 9
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA CZ1SD
UT WOS:000366884700008
PM 26165796
ER
PT J
AU Gadde, U
Rathinam, T
Lillehoj, HS
AF Gadde, U.
Rathinam, T.
Lillehoj, Hyun S.
TI Passive immunization with hyperimmune egg-yolk IgY as prophylaxis and
therapy for poultry diseases - A review
SO ANIMAL HEALTH RESEARCH REVIEWS
LA English
DT Article
DE hyperimmune IgY; egg yolk antibodies; enteric infections; poultry
ID ENTEROTOXIGENIC ESCHERICHIA-COLI; INFECTIOUS BURSAL DISEASE; CHICKEN
EGG; SALMONELLA-ENTERITIDIS; CAMPYLOBACTER-JEJUNI; ANTIBODY IGY;
IMMUNOGLOBULIN-Y; IN-VITRO; EIMERIA-ACERVULINA; BROILER-CHICKENS
AB Passive immunization with pathogen-specific egg yolk antibodies (IgY) is emerging as a potential alternative to antibiotics for the treatment and prevention of various human and animal diseases. Laying hens are an excellent source of high-quality polyclonal antibodies, which can be collected noninvasively from egg yolks. The use of IgY offers several advantages in that it is environmentally friendly, nontoxic, and reduces the numbers of animals required for antibody production. This paper reviews the use of IgY antibodies in the treatment and prevention of enteric pathogen infections in poultry. Brief descriptions of the production, structure, and properties of IgY are also presented. Some limitations of the technology and future perspectives are discussed.
C1 [Gadde, U.; Lillehoj, Hyun S.] USDA ARS, Beltsville Agr Res Ctr, Anim Biosci & Biotechnol Lab, Beltsville, MD 20705 USA.
[Gadde, U.] USDA ARS, Beltsville Agr Res Ctr, ORISE Res Participat Program, Anim Biosci & Biotechnol Lab, Beltsville, MD 20705 USA.
RP Lillehoj, HS (reprint author), USDA ARS, Beltsville Agr Res Ctr, Anim Biosci & Biotechnol Lab, Beltsville, MD 20705 USA.
EM hyun.lillehoj@ars.usda.gov
FU ARS-USDA CRIS in Animal Health (NP103) [8042-32000-097-00D]
FX This project was supported by ARS-USDA CRIS in Animal Health (NP103) #
8042-32000-097-00D.
NR 149
TC 0
Z9 0
U1 8
U2 21
PU CAMBRIDGE UNIV PRESS
PI CAMBRIDGE
PA EDINBURGH BLDG, SHAFTESBURY RD, CB2 8RU CAMBRIDGE, ENGLAND
SN 1466-2523
EI 1475-2654
J9 ANIM HEALTH RES REV
JI Anim. Health Res. Rev.
PD DEC
PY 2015
VL 16
IS 2
BP 163
EP 176
DI 10.1017/S1466252315000195
PG 14
WC Veterinary Sciences
SC Veterinary Sciences
GA CZ5YI
UT WOS:000367177900006
PM 26568433
ER
PT J
AU Cavallin, JE
Schroeder, AL
Jensen, KM
Villeneuve, DL
Blackwell, BR
Carlson, K
Kahl, MD
LaLone, CA
Randolph, EC
Ankley, GT
AF Cavallin, J. E.
Schroeder, A. L.
Jensen, K. M.
Villeneuve, D. L.
Blackwell, B. R.
Carlson, K.
Kahl, M. D.
LaLone, C. A.
Randolph, E. C.
Ankley, G. T.
TI Evaluation of whole-mount in situ hybridization as a tool for
pathway-based toxicological research with early-life stage fathead
minnows
SO AQUATIC TOXICOLOGY
LA English
DT Article
DE Development; Adverse outcome pathway; Fathead minnow; Endocrine
disruption
ID ADVERSE OUTCOME PATHWAYS; WATER TREATMENT PLANTS; EARLY FISH
DEVELOPMENT; PIMEPHALES-PROMELAS; GENE-EXPRESSION; WASTE-WATER;
CONCEPTUAL-FRAMEWORK; ZEBRAFISH; ESTROGENS; 17-ALPHA-ETHYNYLESTRADIOL
AB Early-life stage fish can be more sensitive to toxicants than adults, so delineating mechanisms of perturbation of biological pathways by chemicals during this life stage is crucial. Whole-mount in situ hybridization (WISH) paired with quantitative real-time polymerase chain reaction (QPCR) assays can enhance pathway-based analyses through determination of specific tissues where changes in gene expression are occurring. While WISH has frequently been used in zebrafish (Danio rerio), this technology has not previously been applied to fathead minnows (Pimephales promelas), another well-established small fish model species. The objective of the present study was to adapt WISH to fathead minnow embryos and larvae, and use the approach to evaluate the effects of estrone, an environmentally-relevant estrogen receptor (ER) agonist. Embryos were exposed via the water to 0, 18 or 1800 ng estrone/L (0, 0.067 and 6.7 nM) for 3 or 6 days in a solvent-free, flow-through test system. Relative transcript abundance of three estrogen-responsive genes, estrogen receptor-alpha (esr1), cytochrome P450-aromatase B (cyp19b), and vitellogenin (vtg) was examined in pooled whole embryos using QPCR, and the spatial distribution of up-regulated gene transcripts was examined in individual fish using WISH. After 3 days of exposure to 1800 ng estrone/L, esr1 and cyp19b were significantly up-regulated, while vtg mRNA expression was not affected. After 6 days of exposure to 1800 ng estrone/L, transcripts for all three genes were significantly up-regulated. Corresponding WISH assays revealed spatial distribution of esr1 and vtg in the liver region, an observation consistent with activation of the hepatic ER. This study clearly demonstrates the potential utility of WISH, in conjunction with QPCR, to examine the mechanistic basis of the effects of toxicants on early-life stage fathead minnows. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Cavallin, J. E.] Univ Minnesota, Integrated Biosci Grad Program, Duluth, MN 55812 USA.
[Schroeder, A. L.] Univ Minnesota, Water Resources Ctr, US EPA, Midcontinent Ecol Div,Off Res & Dev,Natl Hlth & E, Duluth, MN 55804 USA.
[Jensen, K. M.; Villeneuve, D. L.; Kahl, M. D.; LaLone, C. A.; Randolph, E. C.; Ankley, G. T.] US EPA, Off Res & Dev, Natl Hlth & Environm Effects Res Lab, Midcontinent Ecol Div, Duluth, MN 55804 USA.
[Blackwell, B. R.] US EPA, ORISE Res Participat Program, Off Res & Dev, Natl Hlth & Environm Effects Res Lab,Midcontinent, Duluth, MN 55804 USA.
[Carlson, K.] Univ St Thomas, Dept Biol, St Paul, MN 55105 USA.
RP Cavallin, JE (reprint author), Univ Minnesota, Integrated Biosci Grad Program, 1035 Univ Dr, Duluth, MN 55812 USA.
EM cavallin.jenna@epa.gov
FU University of Minnesota-U.S. Environmental Protection Agency Cooperative
Training Partnership
FX We thank Krysta Nelson (EPA), Joe Korte (EPA), Kevin Lott (Badger
Technical Services), and Dalma Martinovic-Weigelt (University of St.
Thomas) for additional technical support and assistance. We also thank
Jon Haselman for reviewing an earlier draft of this manuscript. J.
Cavallin was supported in part by the University of Minnesota-U.S.
Environmental Protection Agency Cooperative Training Partnership. This
article has been reviewed in accordance with official U.S. EPA policy.
Mention of products or trade names does not indicate endorsement or
recommendation for use. Conclusions drawn in this study neither
constitute nor reflect the view or policies of the U.S. EPA.
NR 34
TC 1
Z9 1
U1 3
U2 13
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0166-445X
EI 1879-1514
J9 AQUAT TOXICOL
JI Aquat. Toxicol.
PD DEC
PY 2015
VL 169
BP 19
EP 26
DI 10.1016/j.aquatox.2015.10.002
PG 8
WC Marine & Freshwater Biology; Toxicology
SC Marine & Freshwater Biology; Toxicology
GA CZ3TV
UT WOS:000367027800003
PM 26485527
ER
PT J
AU Shen, YW
Jarboe, L
Brown, R
Wen, ZY
AF Shen, Yanwen
Jarboe, Laura
Brown, Robert
Wen, Zhiyou
TI A thermochemical-biochemical hybrid processing of lignocellulosic
biomass for producing fuels and chemicals
SO BIOTECHNOLOGY ADVANCES
LA English
DT Review
DE Hybrid process; Biomass; Fast pyrolysis; Pyrolytic substrates; bio-oil
fractionation; Detoxification; Syngas fermentation; Mass transfer
limitation; Commercialization
ID COMPLETE GENOME SEQUENCE; ETHANOLOGENIC ESCHERICHIA-COLI; SYNTHESIS GAS
FERMENTATION; HOLLOW-FIBER MEMBRANE; MONOXIDE MASS-TRANSFER;
RHODOPSEUDOMONAS-PALUSTRIS P4; EUBACTERIUM-LIMOSUM KIST612;
THERMOCOCCUS-ONNURINEUS NA1; IMPROVED BIOFUEL PRODUCTION; YEAST
YARROWIA-LIPOLYTICA
AB Thermochemical-biological hybrid processing uses thermochemical decomposition of lignocellulosic biomass to produce a variety of intermediate compounds that can be converted into fuels and chemicals through microbial fermentation. It represents a unique opportunity for biomass conversion as it mitigates some of the deficiencies of conventional biochemical (pretreatment-hydrolysis-fermentation) and thermochemical (pyrolysis or gasification) processing. Thermochemical-biological hybrid processing includes two pathways: (i) pyrolysis/pyrolytic substrate fermentation, and (ii) gasification/syngas fermentation. This paper provides a comprehensive review of these two hybrid processing pathways, including the characteristics of fermentative substrates produced in the thermochemical stage and microbial utilization of these compounds in the fermentation stage. The current challenges of these two biomass conversion pathways include toxicity of the crude pyrolytic substrates, the inhibition of raw syngas contaminants, and the mass-transfer limitations in syngas fermentation. Possible approaches for mitigating substrate toxicities are discussed. The review also provides a summary of the current efforts to commercialize hybrid processing. (C) 2015 Elsevier Inc. All rights reserved.
C1 [Shen, Yanwen] Argonne Natl Lab, Div Energy Syst, Lemont, IL 60539 USA.
[Jarboe, Laura] Iowa State Univ, Dept Chem & Biol Engn, Ames, IA 50011 USA.
[Brown, Robert] Iowa State Univ, Ctr Sustainable & Environm Technol, Ames, IA 50011 USA.
[Wen, Zhiyou] Iowa State Univ, Dept Food Sci & Human Nutr, Ames, IA 50011 USA.
RP Wen, ZY (reprint author), Iowa State Univ, Dept Food Sci & Human Nutr, Ames, IA 50011 USA.
EM wenz@iastate.edu
FU NSF Process and Reaction Engineering [CBET-1438042]; NSF Energy for
Sustainability [CBET-1133319]; NSF Iowa ESPCoR, Iowa Energy Center
[11-02]
FX The authors gratefully acknowledge the NSF Process and Reaction
Engineering (CBET-1438042), NSF Energy for Sustainability
(CBET-1133319), and NSF Iowa ESPCoR, Iowa Energy Center (#11-02) for the
financial support of this project.
NR 253
TC 9
Z9 9
U1 12
U2 54
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0734-9750
EI 1873-1899
J9 BIOTECHNOL ADV
JI Biotechnol. Adv.
PD DEC
PY 2015
VL 33
IS 8
BP 1799
EP 1813
DI 10.1016/j.biotechadv.2015.10.006
PG 15
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA CZ3SJ
UT WOS:000367024000019
PM 26492814
ER
PT J
AU Zhang, B
Gao, MC
Zhang, Y
Guo, SM
AF Zhang, B.
Gao, M. C.
Zhang, Y.
Guo, S. M.
TI Senary refractory high-entropy alloy CrxMoNbTaVW
SO CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
LA English
DT Article
DE Alloy design; High entropy alloy; CALPHAD; Microstructure; Phase diagram
ID WEAR-RESISTANCE; DESIGN
AB This paper demonstrates that a senary refractory high-entropy alloy CrxMoNbTaVW can be tailored over a certain range of Cr content with the BCC structure for different microstructures and physical properties, assisted by CALPHAD simulations. Microstructure characterizations are performed using X-ray diffraction and scanning electron microscopy. Chemical micro-segregation during solidification predicted using the Scheil model generally agrees with the experimental results. The lattice constant, density, and Vickers' micro-hardness of the high-entropy alloy samples in the as-cast state are measured and discussed. For CrxMoNbTaVW, x=2.0 case appears exceeding the upper limit of maintaining a single BCC phase HEA, determined by the XRD patterns. The elemental dependence of the mixing thermodynamic properties (entropy, enthalpy and Gibbs energy) in BCC phase in the senary system is analyzed. The calculated entropy of mixing and enthalpy of mixing for CrMoNbTaVW are 14.7 J/K/mol and -662.5 J/mol respectively. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Zhang, B.; Zhang, Y.; Guo, S. M.] Louisiana State Univ, Baton Rouge, LA 70803 USA.
[Gao, M. C.] Natl Energy Technol Lab, Albany, OR 97321 USA.
[Gao, M. C.] AECOM, Albany, OR 97321 USA.
RP Guo, SM (reprint author), Louisiana State Univ, Dept Mech & Ind Engn, Baton Rouge, LA 70803 USA.
EM sguo2@lsu.edu
FU NSF EPSCoR CIMM project [OIA-1541079]; US Department of Energy National
Energy Technology Laboratory (NETL) [DE-FE0004734, DE-FE0011550,
DE-FE0008382, DE-FE0007220]; Louisiana State University Economic
Development Assistantship; Cross-Cutting Technologies Program of NETL
under RES [DE-FE-0004000]
FX This publication is based upon work supported by the NSF EPSCoR CIMM
project under award #OIA-1541079, and the US Department of Energy
National Energy Technology Laboratory (NETL) under Award numbers
DE-FE0004734, DE-FE0011550, DE-FE0008382, and DE-FE0007220, Louisiana
State University Economic Development Assistantship, and the
Cross-Cutting Technologies Program of NETL under the RES contract
DE-FE-0004000.
NR 22
TC 8
Z9 8
U1 8
U2 28
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0364-5916
EI 1873-2984
J9 CALPHAD
JI Calphad-Comput. Coupling Ph. Diagrams Thermochem.
PD DEC
PY 2015
VL 51
BP 193
EP 201
DI 10.1016/j.calphad.2015.09.007
PG 9
WC Thermodynamics; Chemistry, Physical; Materials Science,
Multidisciplinary; Metallurgy & Metallurgical Engineering
SC Thermodynamics; Chemistry; Materials Science; Metallurgy & Metallurgical
Engineering
GA CZ0JG
UT WOS:000366790500019
ER
PT J
AU An, W
Xu, F
Stacchiola, D
Liu, P
AF An, Wei
Xu, Fang
Stacchiola, Dario
Liu, Ping
TI Potassium-Induced Effect on the Structure and Chemical Activity of the
CuxO/Cu(111) (x <= 2) Surface: A Combined Scanning Tunneling Microscopy
and Density Functional Theory Study
SO CHEMCATCHEM
LA English
DT Article
DE copper; density functional calculations; electronic structure;
potassium; scanning probe microscopy
ID OXYGEN-INDUCED RECONSTRUCTIONS; GAS SHIFT REACTION; AU-C INTERACTIONS;
METHANOL SYNTHESIS; CO2 HYDROGENATION; CATALYTIC PROMOTION; CHARGE
POLARIZATION; ALKALI PROMOTION; CARBON-MONOXIDE; ADSORPTION
AB Potassium (K) plays an essential role to promote catalytic reactions in many established industrial catalytic processes. Here, we report a combined study using STM and DFT to understand the effect of the deposition of K on the atomic and electronic structures as well as chemical activities of CuxO/Cu(111) (x <= 2). The DFT calculations show a pseudomorphic growth of K on CuxO/Cu(111) up to 0.19 monolayer (ML) of coverage, in which K binds the surface by a strong ionic interaction with chemisorbed oxygen and relatively weak electrostatic interactions with Cu ions, the lower and upper oxygen atoms on the CuxO rings. The simulated STM pattern based on the DFT results agrees well with the experimental observations. The deposited K has a great impact on the surface electronic structure of u(x)O/Cu(111), which induces a significant reduction in the work function and leads to a strong electron polarization on the surface. The promotion of K on the surface binding properties is selective and varies depending on the nature of the adsorbates. According to our results, K has little effect on surface acidity but it enhances the surface basicity significantly. Consequently, the presence of K does not help CO adsorption on CuxO/Cu(111) but is able to accelerate the activation of CO2. Such a promotion depends strongly on the combinations from both geometric and electronic effects. Our results highlight the origin of the promoting effect of alkali metals in the design of catalysts for complex reactions.
C1 [An, Wei; Stacchiola, Dario; Liu, Ping] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[An, Wei] Shanghai Univ Engn Sci, Coll Chem & Chem Engn, Shanghai 201620, Peoples R China.
[Xu, Fang] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
RP Liu, P (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM pingliu3@bnl.gov
RI Stacchiola, Dario/B-1918-2009
OI Stacchiola, Dario/0000-0001-5494-3205
FU US Department of Energy, Division of Chemical Sciences [DE-SC0012704];
Office of Science of the US Department of Energy [DE-AC02-05CH11231]
FX The research was carried out at Brookhaven National Laboratory (BNL)
under contract DE-SC0012704 with the US Department of Energy, Division
of Chemical Sciences. The DFT calculations were performed using
computational resources at the Center for Functional Nanomaterials, a US
DOE user facility at BNL, the New York Center for Computational Sciences
at BNL, and the National Energy Research Scientific Computing Center
(NERSC) supported by the Office of Science of the US Department of
Energy under Contract No. DE-AC02-05CH11231.
NR 77
TC 4
Z9 4
U1 14
U2 35
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1867-3880
EI 1867-3899
J9 CHEMCATCHEM
JI ChemCatChem
PD DEC 1
PY 2015
VL 7
IS 23
BP 3865
EP 3872
DI 10.1002/cctc.201500719
PG 8
WC Chemistry, Physical
SC Chemistry
GA CZ1AC
UT WOS:000366837000010
ER
PT J
AU Jiang, S
Pan, AW
Lin, TY
Zhang, HY
Malfatti, M
Turteltaub, K
Henderson, PT
Pan, CX
AF Jiang, Shuai
Pan, Amy W.
Lin, Tzu-yin
Zhang, Hongyong
Malfatti, Michael
Turteltaub, Kenneth
Henderson, Paul T.
Pan, Chong-xian
TI Paclitaxel Enhances Carboplatin-DNA Adduct Formation and Cytotoxicity
SO CHEMICAL RESEARCH IN TOXICOLOGY
LA English
DT Article
ID MASS-SPECTROMETRY; DRUG-COMBINATION; CANCER-PATIENTS; CELL-CYCLE;
QUANTIFICATION; TAXOL; CISPLATIN
AB This rapid report focuses on the pharmacodynamic mechanism of the carboplatin/paclitaxel. combination and correlates it with its cytotoxicity. Consistent with the synergistic to additive antitumor activity (the combination index ranging from 0.53 to 0.94), cells exposed to this combination had significantly increased carboplatin-DNA adduct formation when compared to that of carboplatin alone (450 +/- 30 versus 320 +/- 120 adducts per 10(8) nucleotides at 2 h, p = 0004). Removal of paclitaxel increased the repair of carboplatin-DNA adducts: 39.4 versus 33.1 adducts per 10(8) nucleotides per hour in carboplatin alone (p = 0.021). This rapid report provides the first pharmacodynamics data to support the use of carboplatin/paclitaxel combination in the clinic.
C1 [Jiang, Shuai; Pan, Amy W.; Lin, Tzu-yin; Zhang, Hongyong; Henderson, Paul T.; Pan, Chong-xian] Univ Calif Davis, Dept Internal Med, Div Hematol & Oncol, Sacramento, CA 95817 USA.
[Malfatti, Michael; Turteltaub, Kenneth] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Pan, Chong-xian] Univ Calif Davis, Dept Urol, Sacramento, CA 95817 USA.
[Pan, Chong-xian] VA Northern Calif Hlth Care Syst, Hematol & Oncol, Mather, CA 95655 USA.
RP Henderson, PT (reprint author), Univ Calif Davis, Dept Internal Med, Div Hematol & Oncol, 4501 X St,Room 3016, Sacramento, CA 95817 USA.
EM henderson48@gmail.com; cxpan@ucdavis.edu
FU VA Career Development Award-2; VA Merit [1I01BX001784]; NCI Cancer
Center Support Grant [P30 CA 093373]; Research Resource for Biomedical
AMS at Lawrence Livermore National Laboratory [DE-AC52-07NA27344];
National Institute of General Medical Sciences [P41 GM103483-15]
FX This study was supported by the VA Career Development Award-2 (PI: Pan),
VA Merit (PI: Pan; grant # 1I01BX001784), the NCI Cancer Center Support
Grant (PI: de Vere White; P30 CA 093373), and the Research Resource for
Biomedical AMS at Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344 and supported by the National Institute of General
Medical Sciences (PI; Turteltaub; P41 GM103483-15).
NR 18
TC 2
Z9 2
U1 1
U2 9
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0893-228X
EI 1520-5010
J9 CHEM RES TOXICOL
JI Chem. Res. Toxicol.
PD DEC
PY 2015
VL 28
IS 12
BP 2250
EP 2252
DI 10.1021/acs.chemrestox.5b00422
PG 3
WC Chemistry, Medicinal; Chemistry, Multidisciplinary; Toxicology
SC Pharmacology & Pharmacy; Chemistry; Toxicology
GA CZ5BT
UT WOS:000367118000002
PM 26544157
ER
PT J
AU Bogart, JA
Lippincott, CA
Carroll, PJ
Booth, CH
Schelter, EJ
AF Bogart, Justin A.
Lippincott, Connor A.
Carroll, Patrick J.
Booth, Corwin H.
Schelter, Eric J.
TI Controlled Redox Chemistry at Cerium within a Tripodal Nitroxide Ligand
Framework
SO CHEMISTRY-A EUROPEAN JOURNAL
LA English
DT Article
DE cerium; density functional calculations; electrochemistry; nitroxides;
redox chemistry
ID DENSITY-FUNCTIONAL THEORY; RARE-EARTH-ELEMENTS; TETRAVALENT CERIUM;
AMMONIUM-NITRATE; WATER OXIDATION; BASIS-SETS; COMPLEXES; LANTHANIDE;
REACTIVITY; STABILIZATION
AB Ligand reorganization has been shown to have a profound effect on the outcome of cerium redox chemistry. Through the use of a tethered, tripodal, trianionic nitroxide ligand, [((2-tBuNOH) C6H4CH2) 3N](3-) (TriNO(x)(3-)), controlled redox chemistry at cerium was accomplished, and typically reactive complexes of tetravalent cerium were isolated. These included rare cationic complexes [Ce(TriNO(x))thf] [BAr4F], in which Ar-F = 3,5-(CF3)(2)-C6H3, and [Ce(TriNO(x))py]OTf]. A rare complete Ce-halide series, Ce(TriNO(x))X, in which X= F-, Cl-, Br-, I-, was also synthesized. The solution chemistry of these complexes was explored through detailed solution-phase electrochemistry and H-1 NMR experiments and showed a unique shift in the ratio of species with inner- and outer-sphere anions with size of the anionic X- group. DFT calculations on the series of calculations corroborated the experimental findings.
C1 [Bogart, Justin A.; Lippincott, Connor A.; Carroll, Patrick J.; Schelter, Eric J.] Univ Penn, Dept Chem, P Roy & Diana T Vagelos Labs, Philadelphia, PA 19104 USA.
[Booth, Corwin H.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Schelter, EJ (reprint author), Univ Penn, Dept Chem, P Roy & Diana T Vagelos Labs, 231 S 34th St, Philadelphia, PA 19104 USA.
EM schelter@sas.upenn.edu
FU U.S. Department of Energy, Office of Science, Early Career Research
Program [DE-SC0006518]; Research Corporation for Science Advancement;
University of Pennsylvania; National Science Foundation [ACI-1053575];
Office of Science (OS), Office of Basic Energy Sciences, of the U.S.
Department of Energy (DOE) [DE-AC-02-05CH11231]
FX E.J.S. acknowledges the U.S. Department of Energy, Office of Science,
Early Career Research Program (Grant DE-SC0006518), the Research
Corporation for Science Advancement (Cottrell Scholar Award to E.J.S.),
and the University of Pennsylvania for financial support of this work.
This work used the Extreme Science and Engineering Discovery Environment
(XSEDE), which is supported by the National Science Foundation Grant
ACI-1053575. Portions of this work were supported by the Director,
Office of Science (OS), Office of Basic Energy Sciences, of the U.S.
Department of Energy (DOE) under Contract No. DE-AC-02-05CH11231 and
were carried out at SSRL, a Directorate of SLAC National Accelerator
Laboratory and an OS user facility operated for the DOE OS by Stanford
University.
NR 66
TC 6
Z9 6
U1 7
U2 21
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 0947-6539
EI 1521-3765
J9 CHEM-EUR J
JI Chem.-Eur. J.
PD DEC 1
PY 2015
VL 21
IS 49
BP 17850
EP 17859
DI 10.1002/chem.201502952
PG 10
WC Chemistry, Multidisciplinary
SC Chemistry
GA CZ6BI
UT WOS:000367185700041
PM 26503580
ER
PT J
AU Pei, YJ
Som, S
Pomraning, E
Senecal, PK
Skeen, SA
Manin, J
Pickett, LM
AF Pei, Yuanjiang
Som, Sibendu
Pomraning, Eric
Senecal, Peter K.
Skeen, Scott A.
Manin, Julien
Pickett, Lyle M.
TI Large eddy simulation of a reacting spray flame with multiple
realizations under compression ignition engine conditions
SO COMBUSTION AND FLAME
LA English
DT Article
DE Spray A; Large eddy simulation; Engine Combustion Network; Diesel;
Ignition; n-Dodecane
ID TURBULENCE-CHEMISTRY INTERACTION; COMBUSTION CHARACTERISTICS; DIESEL
COMBUSTION; SOOT FORMATION; MODEL
AB An n-dodecane spray flame (Spray A from Engine Combustion Network) was simulated using a 3 function combustion model along with a dynamic structure large eddy simulation (LES) model to evaluate its performance at engine-relevant conditions and to understand the transient behavior of this turbulent flame. The liquid spray was treated with a traditional Lagrangian method and the gas-phase reaction was modeled using a 8 function combustion model. A 103-species skeletal mechanism was used for the n-dodecane chemical kinetic model. Significantly different flame structures and ignition processes are observed for the LES compared to those of Reynolds-averaged Navier-Stokes (RANS) predictions. The LES data suggests that the first ignition initiates in a lean mixture and propagates to a rich mixture, and the main ignition happens in the rich mixture, preferably less than 0.14 in mixture fraction space. LES was observed to have multiple ignition spots in the mixing layer simultaneously while the main ignition initiates in a clearly asymmetric fashion. The temporal flame development also indicates the flame stabilization mechanism is auto-ignition controlled. Soot predictions by LES present much better agreement with experiments compared to RANS, both qualitatively and quantitatively. Multiple realizations for LES were performed to understand the realization to realization variation and to establish best practices for ensemble-averaging diesel spray flames. The relevance index analysis suggests that an average of 5 and 6 realizations can reach 99% of similarity to the target average of 16 realizations on the mixture fraction and temperature fields, respectively. However, more realizations are necessary for the hydroxide (OH) and soot mass fractions due to their high fluctuations. (C) 2015 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Pei, Yuanjiang; Som, Sibendu] Argonne Natl Lab, Transportat Technol Res & Dev Ctr, Argonne, IL 60439 USA.
[Pomraning, Eric; Senecal, Peter K.] Convergent Sci Inc, Madison, WI 53719 USA.
[Skeen, Scott A.; Manin, Julien; Pickett, Lyle M.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA.
RP Pei, YJ (reprint author), Argonne Natl Lab, Transportat Technol Res & Dev Ctr, Argonne, IL 60439 USA.
EM ypei@anl.gov
FU U.S. Department of Energy Office of Science laboratory
[DE-AC02-06CH11357]; U.S. DOE Office of Vehicle Technologies, Office of
Energy Efficiency and Renewable Energy [DE-AC02-06CH11357]
FX The submitted manuscript has been created by UChicago Argonne, LLC,
Operator of Argonne National Laboratory (Argonne). Argonne, a U.S.
Department of Energy Office of Science laboratory, is operated under
Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself,
and others acting on its behalf, a paid-up nonexclusive, irrevocable
worldwide license in said article to reproduce, prepare derivative
works, distribute copies to the public, and perform publicly and display
publicly, by or on behalf of the Government.; This research was funded
by U.S. DOE Office of Vehicle Technologies, Office of Energy Efficiency
and Renewable Energy under Contract No. DE-AC02-06CH11357. The authors
wish to thank Gurpreet Singh and Leo Breton, program managers at U.S.
DOE, for their support.
NR 57
TC 9
Z9 9
U1 6
U2 14
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
EI 1556-2921
J9 COMBUST FLAME
JI Combust. Flame
PD DEC
PY 2015
VL 162
IS 12
BP 4442
EP 4455
DI 10.1016/j.combustflame.2015.08.010
PG 14
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA CZ6KY
UT WOS:000367211400005
ER
PT J
AU Luketa, A
Blanchat, T
AF Luketa, Anay
Blanchat, Thomas
TI The phoenix series large-scale methane gas burner experiments and liquid
methane pool fires experiments on water
SO COMBUSTION AND FLAME
LA English
DT Article
DE LNG; Methane; Gas burner; Pool fire; Heat flux; Flame height
ID LAMINAR DIFFUSION FLAMES; 1 ATM; STEAM; STABILITY; HYDRATE
AB This paper summarizes a series of large-scale outdoor and indoor LNG pool fire experiments conducted at Sandia National Laboratories in Albuquerque, New Mexico. Two outdoor LNG spills on water with resulting pool fires of 21 m and 56 m in diameter were conducted to improve hazard predictions by obtaining measurements of flame height, smoke production, and burn rate. The experimental data indicates that LNG pool fires on water display different behavior than those on land by producing less smoke. Surface emissive powers of up to 286 kW/m(2), flames heights of up to 146 m, and burn rates of about 0.147 kg/m(2) s were measured. Discussion is provided on the observed behavior of the two outdoor tests with regards to smoke production, wind effects, and hydrate production. The large-scale indoor experiments used a 3-m diameter gas burner with methane fuel to assess flame height to fire diameter ratios as a function of non-dimensional heat release rates for extrapolation to large-scale LNG fires. A flame height correlation was developed from this data. (C) 2015 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Luketa, Anay; Blanchat, Thomas] Sandia Natl Labs, Fire Sci & Technol Dept, Albuquerque, NM 87185 USA.
RP Luketa, A (reprint author), Sandia Natl Labs, Fire Sci & Technol Dept, POB 5800,MS-1132, Albuquerque, NM 87185 USA.
EM aluketa@sandia.gov; tkblanc@sandia.gov
FU United Stated Department of Energy [DE-AC04-94AL85000]
FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the United Stated Department of Energy
under Contract DE-AC04-94AL85000.
NR 37
TC 1
Z9 1
U1 2
U2 3
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
EI 1556-2921
J9 COMBUST FLAME
JI Combust. Flame
PD DEC
PY 2015
VL 162
IS 12
BP 4497
EP 4513
DI 10.1016/j.combustflame.2015.08.025
PG 17
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA CZ6KY
UT WOS:000367211400010
ER
PT J
AU Amato, A
Day, M
Cheng, RK
Bell, J
Dasgupta, D
Lieuwen, T
AF Amato, Alberto
Day, Marcus
Cheng, Robert K.
Bell, John
Dasgupta, Debolina
Lieuwen, Tim
TI Topology and burning rates of turbulent, lean, H-2/air flames
SO COMBUSTION AND FLAME
LA English
DT Article
DE Premixed flames; Turbulent combustion; Leading points; Flame stretch
ID DIRECT NUMERICAL-SIMULATION; METHANE-AIR FLAMES; REACTION ZONES REGIME;
LEWIS NUMBER; PREMIXED FLAMES; STRAIN-RATE; SURFACE-DENSITY; REACTION
CLOSURE; COMBUSTION; LAMINAR
AB Improved understanding of turbulent flames characterized by negative consumption speed-based Markstein lengths is necessary to develop better models for turbulent lean combustion of high hydrogen content fuels. In this paper we investigate the topology and burning rates of turbulent, lean (phi = 0.31), H-2/air flames obtained from a recently published DNS database (Aspden et al., 2011). We calculate local flame front curvatures, strain rates, thicknesses, and burning velocities and compare these values to reference quantities obtained from stretched laminar flames computed numerically in three model geometrical configurations a counterflow twin flame, a tubular counterflow flame and an expanding cylindrical flame. We compare and contrast the DNS with these model laminar flame calculations, and show both where they closely correlate with each other, as well as where they do not. These results in the latter case are shown to result from non-flamelet behaviors, unsteady effects, and curvature-strain correlations. These insights are derived from comparisons conditioned on different topological features, such as portions of the flame front with a spherical/cylindrical shape, the leading edge of the flame, and portions of the flame front with low mean curvature. We also show that reference time scales vary appreciably over the flame, and characterizing the relative values of fluid mechanic and kinetic time scales by a single value leads to erroneous conclusions. For example, there is a two order of magnitude decrease in chemical time scales at the leading edge of the front relative to its unstretched value. For this reason, the leading edge of the front quite closely tracks quasi-steady calculations, even in the lowest Damkohler number case, Da(F)similar to 0.005. (C) 2015 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Amato, Alberto; Dasgupta, Debolina; Lieuwen, Tim] Georgia Inst Technol, Sch Aerosp & Mech Engn, Atlanta, GA 30332 USA.
[Day, Marcus; Bell, John] Lawrence Berkeley Natl Lab, Ctr Computat Sci & Engn, Berkeley, CA 94720 USA.
[Cheng, Robert K.] Lawrence Berkeley Natl Lab, Environm & Energy Technol, Berkeley, CA 94720 USA.
RP Lieuwen, T (reprint author), Georgia Inst Technol, Sch Aerosp Engn, 270 Ferst Dr,Montgomery Knight Bldg 0150, Atlanta, GA 30332 USA.
EM tim.lieuwen@energy.gatech.edu
FU University Turbine Systems Research program [DE-FC21-92MC29061]; Air
Force Office of Scientific Research [FA9550-12-1-0107/RC657]
FX This research was supported by the University Turbine Systems Research
(contract #DE-FC21-92MC29061) program and the Air Force Office of
Scientific Research (contract #FA9550-12-1-0107/RC657), contract
monitors are Dr. Mark Freeman and Dr. Chiping Li, respectively. The
authors gratefully acknowledge the help of Prof. C.J. Sung in making
available the modified OPPDIF code used to simulate the counterflow
tubular flame geometry.
NR 58
TC 3
Z9 3
U1 2
U2 11
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
EI 1556-2921
J9 COMBUST FLAME
JI Combust. Flame
PD DEC
PY 2015
VL 162
IS 12
BP 4553
EP 4565
DI 10.1016/j.combustflame.2015.09.010
PG 13
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA CZ6KY
UT WOS:000367211400014
ER
PT J
AU Bak, HS
Lee, SR
Chen, JH
Yoo, CS
AF Bak, Hyun Su
Lee, Su Ryong
Chen, Jacqueline H.
Yoo, Chun Sang
TI A numerical study of the diffusive-thermal instability of opposed
nonpremixed tubular flames
SO COMBUSTION AND FLAME
LA English
DT Article
DE Diffusive-thermal instability; Nonpremixed tubular flame; Hydrogen;
Linear stability analysis; Displacement speed
ID EDGE-FLAMES; LEWIS NUMBERS; HEATED COFLOW; JET FLAME; HYDROGEN; DNS;
IGNITION; AIR; STABILIZATION; COUNTERFLOW
AB The diffusive-thermal (D-T) instability of opposed nonpremixed tubular flames near extinction is investigated using two-dimensional (2-D) direct numerical simulations together with the linear stability analysis. Two different initial conditions (IC), i.e. the perturbed IC and the C-shaped IC are adopted to elucidate the effects of small and large amplitude disturbances on the formation of flame cells, similar to conditions found in linear stability analysis and experiments, respectively. The characteristics of the D-T instability of tubular flames are identified by a critical Damkohler number, Da(C), at which the D-T instability first occurs and the corresponding number of flame cells for three different tubular flames with different flame radii. It is found that Da(C) predicted through linear stability analysis shows good agreement with that obtained from the 2-D simulations performed with two different ICs. The flame cell number, N-cell, from the 2-D simulations with the perturbed IC is also found to be equal to an integer close to the maximum wavenumber, k(max), obtained from the linear stability analysis. However, N-cell from the 2-D simulations with the C-shaped IC is smaller than k(max) and N-cell found from the simulations with the perturbed IC. This is primarily because the strong reaction at the edges of the horseshoe-shaped cellular flame developed from the C-shaped IC is more likely to produce larger flame cells and reduce N-cell. It is also found that for cases with the C-shaped IC, once the cellular instability occurs, the number of flame cells remains constant until global extinction occurs by incomplete reaction manifested by small Da. It is also verified through the displacement speed, S-d, analysis that the two edges of the horseshoe-shaped cellular flame are stationary and therefore do not merge due to the diffusionreaction balance at the edges. Moreover, large negative S-d is observed at the local extinction points while small positive or negative S-d features in the movement of flame cells as they adjust their location and size towards steady state. (C) 2015 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Bak, Hyun Su; Yoo, Chun Sang] Ulsan Natl Inst Sci & Technol, Dept Mech Engn, Ulsan 689798, South Korea.
[Lee, Su Ryong] Seoul Natl Univ Sci & Technol, Dept Mech & Automot Engn, Seoul 139743, South Korea.
[Chen, Jacqueline H.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA.
[Yoo, Chun Sang] Ulsan Natl Inst Sci & Technol, Sch Mech & Nucl Engn, Ulsan 689798, South Korea.
RP Yoo, CS (reprint author), Ulsan Natl Inst Sci & Technol, Dept Mech Engn, Ulsan 689798, South Korea.
EM csyoo@unist.ac.kr
RI Yoo, Chun Sang/E-5900-2010
OI Yoo, Chun Sang/0000-0003-1094-4016
FU Space Core Technology Development Program through National Research
Foundation of Korea - Ministry of Science, ICT and Future Planning
[2015M1A3A3A02027319]; Basic Science Research Program through National
Research Foundation of Korea - Ministry of Science, ICT and Future
Planning [2015R1A2A2A01007378]; US Department of Energy, Office of Basic
Energy Sciences, Division of Chemical Sciences, Geosciences, and
Biosciences; United States Department of Energy [DE-AC04-94AL85000]
FX This work was supported by the Space Core Technology Development Program
(No. 2015M1A3A3A02027319) and Basic Science Research Program (No.
2015R1A2A2A01007378) through the National Research Foundation of Korea
grant funded by the Ministry of Science, ICT and Future Planning. The
work at Sandia National Laboratories was sponsored by the US Department
of Energy, Office of Basic Energy Sciences, Division of Chemical
Sciences, Geosciences, and Biosciences. Sandia is a multiprogram
laboratory operated by Sandia Corporation, a Lockheed Martin Company,
for the United States Department of Energy under Contract
DE-AC04-94AL85000. This research used the resources of the UNIST
Supercomputing Center.
NR 35
TC 0
Z9 0
U1 1
U2 9
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
EI 1556-2921
J9 COMBUST FLAME
JI Combust. Flame
PD DEC
PY 2015
VL 162
IS 12
BP 4612
EP 4621
DI 10.1016/j.combustflame.2015.09.019
PG 10
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA CZ6KY
UT WOS:000367211400018
ER
PT J
AU Yang, ZQ
Wang, TP
AF Yang, Zhaoqing
Wang, Taiping
TI Responses of estuarine circulation and salinity to the loss of
intertidal flats - A modeling study
SO CONTINENTAL SHELF RESEARCH
LA English
DT Article
DE Intertidal flats; Salinity intrusion; Stratification; Estuarine
circulation; Numerical modeling; Anthropogenic impact
ID SEA-LEVEL RISE; COORDINATE OCEAN MODELS; GULF-OF-MEXICO; TIDAL FLATS;
RIVER ESTUARY; DAM REMOVAL; STORM-SURGE; ELWHA RIVER; COASTAL; BAY
AB Intertidal flats in estuaries are coastal wetlands that provide critical marine habitats to support wide ranges of marine species. Over the last century many estuarine systems have experienced significant loss of intertidal flats due to anthropogenic impacts. This paper presents a modeling study conducted to investigate the responses of estuarine hydrodynamics to the loss of intertidal flats in Whidbey Basin of Puget Sound on the northwest coast of North America. Changes in salinity intrusion limits in the estuaries, salinity stratification, and circulation in intertidal flats and estuaries were evaluated by comparing model results under the existing baseline condition and the no-flat condition. Model results showed that loss of intertidal flats results in an increase in salinity intrusion, stronger mixing, and a phase shift in salinity and velocity fields in the bay front areas. Model results also indicated that loss of intertidal flats enhances two-layer circulation, especially the bottom water intrusion. Loss of intertidal flats increases the mean salinity but reduces the salinity range in the subtidal flats over a tidal cycle because of increased mixing. Salinity intrusion limits extend upstream in all three major rivers discharging into Whidbey Basin when no intertidal flats are present. Changes in salinity intrusion and estuarine circulation patterns due to loss of intertidal flats affect the nearshore habitat and water quality in estuaries and potentially increase risk of coastal hazards, such as storm surge and coastal flooding. Lastly, model results suggested the importance of including intertidal flats and the wetting-and-drying process in hydrodynamic simulations when intertidal flats are present in the model domain. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Yang, Zhaoqing; Wang, Taiping] Pacific NW Natl Lab, Seattle, WA 98109 USA.
RP Yang, ZQ (reprint author), Pacific NW Natl Lab, 1100 Dexter Ave North,Suite 400, Seattle, WA 98109 USA.
EM zhaoqing.yang@pnnl.gov; taiping.wang@pnnl.gov
NR 75
TC 1
Z9 1
U1 10
U2 18
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0278-4343
EI 1873-6955
J9 CONT SHELF RES
JI Cont. Shelf Res.
PD DEC 1
PY 2015
VL 111
SI SI
BP 159
EP 173
DI 10.1016/j.csr.2015.08.011
PN B
PG 15
WC Oceanography
SC Oceanography
GA CZ5CD
UT WOS:000367119100006
ER
PT J
AU Henard, CA
Freed, EF
Guarnieri, MT
AF Henard, Calvin Andrew
Freed, Emily Frances
Guarnieri, Michael Thomas
TI Phosphoketolase pathway engineering for carbon-efficient biocatalysis
SO CURRENT OPINION IN BIOTECHNOLOGY
LA English
DT Review
ID 2-COMPONENT RESPONSE REGULATORS; SACCHAROMYCES-CEREVISIAE; ACETYL
PHOSPHATE; ESCHERICHIA-COLI; LIQUID FUELS; METABOLISM; ACTIVATION;
EXPRESSION; METHANE; ENZYME
AB Recent advances in metabolic engineering have facilitated the development of microbial biocatalysts capable of producing an array of bio-products, ranging from fuels to drug molecules. These bio-products are commonly generated through an acetyl-CoA intermediate, which serves as a key precursor in the biological conversion of carbon substrates. Conventional biocatalytic upgrading strategies proceeding through this route are limited by low carbon efficiencies, in large part due to carbon losses associated with pyruvate decarboxylation to acetyl-CoA. Bypass of pyruvate decarboxylation offers a means to dramatically enhance carbon yields and, in turn, bioprocess economics. Herein, we discuss recent advances and prospects for employing the phosphoketolase pathway for direct biosynthesis of acetyl-CoA from carbon substrates, and phosphoketolase-based metabolic engineering strategies for carbon efficient biocatalysis.
C1 [Henard, Calvin Andrew; Freed, Emily Frances; Guarnieri, Michael Thomas] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA.
RP Guarnieri, MT (reprint author), Natl Renewable Energy Lab, Natl Bioenergy Ctr, 15013 Denver West Pkwy, Golden, CO 80401 USA.
EM Michael.Guarnieri@nrel.gov
FU Office of Energy Efficiency and Renewable Energy, United States
Department of Energy; Bioenergy Technologies Office, WBS, United States
Department of Energy [2.3.2.102]; Office of Science, Office of
Biological & Environmental Research, United States Department of Energy
[DE-SC-0012658]; Office of Science
FX Work in our lab is supported by the Office of Energy Efficiency and
Renewable Energy, Bioenergy Technologies Office, WBS # 2.3.2.102, and
Office of Science, Office of Biological & Environmental Research under
Award Number DE-SC-0012658, United States Department of Energy and
Office of Science.
NR 37
TC 3
Z9 3
U1 0
U2 7
PU CURRENT BIOLOGY LTD
PI LONDON
PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND
SN 0958-1669
EI 1879-0429
J9 CURR OPIN BIOTECH
JI Curr. Opin. Biotechnol.
PD DEC
PY 2015
VL 36
BP 183
EP 188
DI 10.1016/j.copbio.2015.08.018
PG 6
WC Biochemical Research Methods; Biotechnology & Applied Microbiology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
GA CZ5BI
UT WOS:000367116700024
PM 26360872
ER
PT J
AU Bugg, TDH
Resch, MG
AF Bugg, Timothy D. H.
Resch, Michael G.
TI Editorial overview: Energy: Prospects for fuels and chemicals from a
biomass-based biorefinery using post-genomic chemical biology tools
SO CURRENT OPINION IN CHEMICAL BIOLOGY
LA English
DT Editorial Material
C1 [Bugg, Timothy D. H.] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England.
[Resch, Michael G.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO USA.
RP Bugg, TDH (reprint author), Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England.
EM T.D.Bugg@warwick.ac.uk; Michael.Resch@nrel.gov
NR 0
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U1 1
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PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1367-5931
EI 1879-0402
J9 CURR OPIN CHEM BIOL
JI Curr. Opin. Chem. Biol.
PD DEC
PY 2015
VL 29
BP V
EP VII
DI 10.1016/j.cbpa.2015.10.031
PG 3
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA CZ5BP
UT WOS:000367117500001
PM 26574194
ER
PT J
AU d'Espaux, L
Mendez-Perez, D
Li, R
Keasling, JD
AF d'Espaux, Leo
Mendez-Perez, Daniel
Li, Rachel
Keasling, Jay D.
TI Synthetic biology for microbial production of lipid-based biofuels
SO CURRENT OPINION IN CHEMICAL BIOLOGY
LA English
DT Review
ID ACID-DERIVED FUELS; SACCHAROMYCES-CEREVISIAE; ESCHERICHIA-COLI;
FATTY-ACIDS; E. COLI; BIODIESEL PRODUCTION; CHAIN ALKANES; BIOSYNTHESIS;
EXPRESSION; CHEMICALS
AB The risks of maintaining current CO2 emission trends have led to interest in producing biofuels using engineered microbes. Microbial biofuels reduce emissions because CO2 produced by fuel combustion is offset by CO2 captured by growing biomass, which is later used as feedstock for biofuel fermentation. Hydrocarbons found in petroleum fuels share striking similarity with biological lipids. Here we review synthetic metabolic pathways based on fatty acid and isoprenoid metabolism to produce alkanes and other molecules suitable as biofuels. We further discuss engineering strategies to optimize engineered biosynthetic routes, as well as the potential of synthetic biology for sustainable manufacturing.
C1 [d'Espaux, Leo; Mendez-Perez, Daniel; Li, Rachel; Keasling, Jay D.] Lawrence Berkeley Natl Lab, Joint BioEnergy Inst, Emeryville, CA 94608 USA.
[Li, Rachel; Keasling, Jay D.] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94270 USA.
[Keasling, Jay D.] Univ Calif Berkeley, Dept Bioengn, Inst QB3, Berkeley, CA 94270 USA.
[Keasling, Jay D.] Univ Calif Berkeley, Dept Chem & Biomol Engn, Inst QB3, Berkeley, CA 94270 USA.
RP Keasling, JD (reprint author), Lawrence Berkeley Natl Lab, Joint BioEnergy Inst, Emeryville, CA 94608 USA.
EM jdkeasling@lbl.gov
FU Joint BioEnergy Institute (JBEI) - U.S. Department of Energy, Office of
Science, Office of Biological and Environmental Research
[DE-AC02-05CH11231]; National Science Foundation [MCB-1341894]
FX We thank Nicholas Clements, Victor Chubukov, and Maren Wehrs for
suggestions while preparing this manuscript. This work was funded by the
Joint BioEnergy Institute (JBEI), which is funded by the U.S. Department
of Energy, Office of Science, Office of Biological and Environmental
Research, under Contract DE-AC02-05CH11231, and by the National Science
Foundation under award MCB-1341894.
NR 71
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U2 54
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1367-5931
EI 1879-0402
J9 CURR OPIN CHEM BIOL
JI Curr. Opin. Chem. Biol.
PD DEC
PY 2015
VL 29
BP 58
EP 65
DI 10.1016/j.cbpa.2015.09.009
PG 8
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA CZ5BP
UT WOS:000367117500010
PM 26479184
ER
PT J
AU Donohoe, BS
Resch, MG
AF Donohoe, Bryon S.
Resch, Michael G.
TI Mechanisms employed by cellulase systems to gain access through the
complex architecture of lignocellulosic substrates
SO CURRENT OPINION IN CHEMICAL BIOLOGY
LA English
DT Review
ID CARBOHYDRATE-BINDING MODULE; ENZYMATIC-HYDROLYSIS; THERMOCHEMICAL
PRETREATMENT; FUNGAL CELLULASES; LIGNIN; DEGRADATION; ENZYMES; BIOMASS;
SACCHARIFICATION; ADSORPTION
AB To improve the deconstruction of biomass, the most abundant terrestrial source of carbon polymers, en route to renewable fuels, chemicals, and materials more knowledge is needed into the mechanistic interplay between thermochemical pretreatment and enzymatic hydrolysis. In this review we highlight recent progress in advanced imaging techniques that have been used to elucidate the effects of thermochemical pretreatment on plant cell walls across a range of spatial scales and the relationship between the substrate structure and the function of various glycoside hydrolase components. The details of substrate and enzyme interactions are not yet fully understood and the challenges of characterizing plant cell wall architecture, how it dictates recalcitrance, and how it relates to enzyme-substrate interactions is the focus for many research groups in the field. Better understanding of how to match pretreatments with improved enzyme mixtures will lead to lower costs for industrial biorefining.
C1 [Donohoe, Bryon S.] Natl Renewable Energy Lab, Biosci Ctr, Golden, CO 80401 USA.
[Resch, Michael G.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA.
RP Donohoe, BS (reprint author), Natl Renewable Energy Lab, Biosci Ctr, 15013 Denver West Pkwy, Golden, CO 80401 USA.
EM bryon.donohoe@nrel.gov
FU U.S. Department of Energy (DOE) Office of Science, Office of Biological
and Environmental Research through the BioEnergy Science Center (BESC),
a DOE Bioenergy Research Center; DOE Office of Energy Efficiency and
Renewable Energy, Bioenergy Technologies Office [DE-AC36-08GO28308DOE];
National Renewable Energy Laboratory
FX The authors acknowledge funding support from the U.S. Department of
Energy (DOE) Office of Science, Office of Biological and Environmental
Research through the BioEnergy Science Center (BESC), a DOE Bioenergy
Research Center and the DOE Office of Energy Efficiency and Renewable
Energy, Bioenergy Technologies Office under Contract No.
DE-AC36-08GO28308DOE with the National Renewable Energy Laboratory. The
authors also thank Peter Ciesielski for cell wall micrographs and
Yannick Bomb le for enzyme models used in the figures.
NR 54
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PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1367-5931
EI 1879-0402
J9 CURR OPIN CHEM BIOL
JI Curr. Opin. Chem. Biol.
PD DEC
PY 2015
VL 29
BP 100
EP 107
DI 10.1016/j.cbpa.2015.08.014
PG 8
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA CZ5BP
UT WOS:000367117500016
PM 26529490
ER
PT J
AU Cragg, SM
Beckham, GT
Bruce, NC
Bugg, TDH
Distel, DL
Dupree, P
Etxabe, AG
Goodell, BS
Jellison, J
McGeehan, JE
McQueen-Mason, SJ
Schnorr, K
Walton, PH
Watts, JEM
Zimmer, M
AF Cragg, Simon M.
Beckham, Gregg T.
Bruce, Neil C.
Bugg, Timothy D. H.
Distel, Daniel L.
Dupree, Paul
Etxabe, Amaia Green
Goodell, Barry S.
Jellison, Jody
McGeehan, John E.
McQueen-Mason, Simon J.
Schnorr, Kirk
Walton, Paul H.
Watts, Joy E. M.
Zimmer, Martin
TI Lignocellulose degradation mechanisms across the Tree of Life
SO CURRENT OPINION IN CHEMICAL BIOLOGY
LA English
DT Review
ID CARBOHYDRATE-ACTIVE ENZYMES; CELL WALL POLYSACCHARIDES; ENDOGENOUS
CELLULASE; LIGNIN DEGRADATION; FUNGAL CELLULASES; DEGRADING ENZYMES;
TERMITE; GUT; DIGESTION; MONOOXYGENASES
AB Organisms use diverse mechanisms involving multiple complementary enzymes, particularly glycoside hydrolases (GHs), to deconstruct lignocellulose. Lytic polysaccharide monooxygenases (LPMOs) produced by bacteria and fungi facilitate deconstruction as does the Fenton chemistry of brown-rot fungi. Lignin depolymerisation is achieved by white-rot fungi and certain bacteria, using peroxidases and laccases. Meta-omics is now revealing the complexity of prokaryotic degradative activity in lignocellulose-rich environments. Protists from termite guts and some oomycetes produce multiple lignocellulolytic enzymes. Lignocellulose-consuming animals secrete some GHs, but most harbour a diverse enzyme-secreting gut microflora in a mutualism that is particularly complex in termites. Shipworms however, house GH-secreting and LPMO-secreting bacteria separate from the site of digestion and the isopod Limnoria relies on endogenous enzymes alone. The omics revolution is identifying many novel enzymes and paradigms for biomass deconstruction, but more emphasis on function is required, particularly for enzyme cocktails, in which LPMOs may play an important role.
C1 [Cragg, Simon M.; Etxabe, Amaia Green; McGeehan, John E.; Watts, Joy E. M.] Univ Portsmouth, Sch Biol Sci, Portsmouth PO1 2DY, Hants, England.
[Beckham, Gregg T.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA.
[Bruce, Neil C.; McQueen-Mason, Simon J.] Univ York, Dept Biol Sci, Ctr Novel Agr Prod, York YO10 5DD, N Yorkshire, England.
[Bugg, Timothy D. H.] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England.
[Distel, Daniel L.] Northeastern Univ, Ctr Marine Sci, Ocean Genome Legacy, Boston, MA 02115 USA.
[Dupree, Paul] Univ Cambridge, Dept Biochem, Cambridge CB2 1QW, England.
[Goodell, Barry S.] Virginia Polytech Inst & State Univ, Virginia Tech, Dept Sustainable Biomat, Blacksburg, VA 24061 USA.
[Jellison, Jody] Virginia Polytech Inst & State Univ, Virginia Tech, Dept Plant Pathol Physiol & Weed Sci, Blacksburg, VA 24061 USA.
[Schnorr, Kirk] Novozymes AS, DK-2880 Bagsvaerd, Denmark.
[Walton, Paul H.] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England.
[Zimmer, Martin] Leibniz Ctr Trop Marine Ecol ZMT GmbH, D-28359 Bremen, Germany.
RP Cragg, SM (reprint author), Univ Portsmouth, Sch Biol Sci, King Henry Bldg,King Henry 1st St, Portsmouth PO1 2DY, Hants, England.
EM simon.cragg@port.ac.uk
RI Cragg, Simon/C-8463-2011; Distel, Daniel/A-8047-2017;
OI Cragg, Simon/0000-0003-1082-7653; Distel, Daniel/0000-0002-3860-194X;
McGeehan, John/0000-0002-6750-1462
FU BBSRC [BB/H531543/1, BB/L001926/1, BB/1018492/1, BB/K020358/1]; US
Partnering grant from BBSRC [BB/G016208/1]; BBSRC/FAPESP grant
[BB/1018492/1]; Marie Curie [FP7-RG 276948]; USDA Hatch Project [S-1041
VA-136288]; NSF Award [IOS1442759]; NIH Award [U19 TW008163]; US
Department of Energy Bioenergy Technologies Office
FX The work of the teams at York, Portsmouth and Cambridge on development
of ideas expressed in this review was supported by grants from BBSRC
(BB/H531543/1, BB/L001926/1, BB/1018492/1, BB/K020358/1). The workshop
was supported by a US Partnering grant from BBSRC (BB/G016208/1) to
Cragg and a BBSRC/FAPESP grant to Bruce (BB/1018492/1). Watts was
supported by Marie Curie FP7-RG 276948. Goodell acknowledges support
from USDA Hatch Project S-1041 VA-136288. Distel acknowledges support
from NSF Award IOS1442759 and NIH Award Number U19 TW008163. Beckham
thanks the US Department of Energy Bioenergy Technologies Office for
funding. We appreciated the hospitality of the Linnean Society in
allowing us to meet in inspirational surroundings under portraits of
Linnaeus, Darwin and Wallace.
NR 74
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U1 40
U2 131
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1367-5931
EI 1879-0402
J9 CURR OPIN CHEM BIOL
JI Curr. Opin. Chem. Biol.
PD DEC
PY 2015
VL 29
BP 108
EP 119
DI 10.1016/j.cbpa.2015.10.018
PG 12
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA CZ5BP
UT WOS:000367117500017
PM 26583519
ER
PT J
AU Gibbons, SM
Gilbert, JA
AF Gibbons, Sean M.
Gilbert, Jack A.
TI Microbial diversity - exploration of natural ecosystems and microbiomes
SO CURRENT OPINION IN GENETICS & DEVELOPMENT
LA English
DT Article
ID BACTERIAL COMMUNITY STRUCTURE; POPULATION GENOMICS; GLOBAL PATTERNS;
SEED BANK; ECOLOGY; BIOSPHERE; OCEAN; DIFFERENTIATION; BIOGEOGRAPHY;
MAINTENANCE
AB Microorganisms are the pillars of life on Earth. Over billions of years, they have evolved into every conceivable niche on the planet. Microbes reshaped the oceans and atmosphere and gave rise to conditions conducive to multicellular organisms. Only in the past decade have we started to peer deeply into the microbial cosmos, and what we have found is amazing. Microbial ecosystems behave, in many ways, like large-scale ecosystems, although there are important exceptions. We review recent advances in our understanding of how microbial diversity is distributed across environments, how microbes influence the ecosystems in which they live, and how these nano-machines might be harnessed to advance our understanding of the natural world.
C1 [Gibbons, Sean M.] Univ Chicago, Grad Program Biophys Sci, Chicago, IL 60637 USA.
[Gibbons, Sean M.; Gilbert, Jack A.] Argonne Natl Lab, Inst Genom & Syst Biol, Argonne, IL 60439 USA.
[Gibbons, Sean M.] MIT, Dept Biol Engn, Cambridge, MA 02139 USA.
[Gilbert, Jack A.] Univ Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USA.
[Gilbert, Jack A.] Univ Chicago, Dept Surg, Chicago, IL 60637 USA.
[Gilbert, Jack A.] Marine Biol Lab, Woods Hole, MA 02543 USA.
[Gilbert, Jack A.] Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China.
RP Gibbons, SM (reprint author), Univ Chicago, Grad Program Biophys Sci, Chicago, IL 60637 USA.
EM sgibbons@mit.edu; gilbert@mcs.anl.gov
FU EPA STAR Graduate Fellowship; NIH [5T-32EB-009412]
FX S.M.G. was supported by an EPA STAR Graduate Fellowship and by NIH
training grant 5T-32EB-009412.
NR 68
TC 2
Z9 2
U1 8
U2 38
PU CURRENT BIOLOGY LTD
PI LONDON
PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND
SN 0959-437X
EI 1879-0380
J9 CURR OPIN GENET DEV
JI Curr. Opin. Genet. Dev.
PD DEC
PY 2015
VL 35
BP 66
EP 72
DI 10.1016/j.gde.2015.10.003
PG 7
WC Cell Biology; Genetics & Heredity
SC Cell Biology; Genetics & Heredity
GA CZ1XZ
UT WOS:000366900600010
PM 26598941
ER
PT J
AU Hittinger, CT
Rokas, A
Bai, FY
Boekhout, T
Goncalves, P
Jeffries, TW
Kominek, J
Lachance, MA
Libkind, D
Rosa, CA
Sampaio, JP
Kurtzman, CP
AF Hittinger, Chris Todd
Rokas, Antonis
Bai, Feng-Yan
Boekhout, Teun
Goncalves, Paula
Jeffries, Thomas W.
Kominek, Jacek
Lachance, Marc-Andre
Libkind, Diego
Rosa, Carlos A.
Sampaio, Jose Paulo
Kurtzman, Cletus P.
TI Genomics and the making of yeast biodiversity
SO CURRENT OPINION IN GENETICS & DEVELOPMENT
LA English
DT Article
ID HORIZONTAL GENE-TRANSFER; SACCHAROMYCES-CEREVISIAE GENOME; LAGER-BREWING
YEAST; POPULATION GENOMICS; DRAFT GENOME; INTERSPECIES HYBRID;
CANDIDA-ALBICANS; SEQUENCE; EVOLUTION; REVEALS
AB Yeasts are unicellular fungi that do not form fruiting bodies. Although the yeast lifestyle has evolved multiple times, most known species belong to the subphylum Saccharomycotina (syn. Hemiascomycota, hereafter yeasts). This diverse group includes the premier eukaryotic model system, Saccharomyces cerevisiae; the common human commensal and opportunistic pathogen, Candida albicans; and over 1000 other known species (with more continuing to be discovered). Yeasts are found in every biome and continent and are more genetically diverse than angiosperms or chordates. Ease of culture, simple life cycles, and small genomes (similar to 10-20 Mbp) have made yeasts exceptional models for molecular genetics, biotechnology, and evolutionary genomics. Here we discuss recent developments in understanding the genomic underpinnings of the making of yeast biodiversity, comparing and contrasting natural and human-associated evolutionary processes. Only a tiny fraction of yeast biodiversity and metabolic capabilities has been tapped by industry and science. Expanding the taxonomic breadth of deep genomic investigations will further illuminate how genome function evolves to encode their diverse metabolisms and ecologies.
C1 [Hittinger, Chris Todd; Kominek, Jacek] Univ Wisconsin, Genet Lab, Genome Ctr Wisconsin, Wisconsin Energy Inst,JF Crow Inst Study Evolut, Madison, WI 53706 USA.
[Hittinger, Chris Todd] Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
[Rokas, Antonis] Vanderbilt Univ, Dept Biol Sci, Nashville, TN 37235 USA.
[Bai, Feng-Yan; Boekhout, Teun] Chinese Acad Sci, Inst Microbiol, State Key Lab Mycol, Beijing 100101, Peoples R China.
[Boekhout, Teun] CBS KNAW Fungal Biodivers Ctr, Utrecht, Netherlands.
[Boekhout, Teun] Second Mil Med Univ, Shanghai Key Lab Mol Med Mycol, Changzheng Hosp, Shanghai, Peoples R China.
[Goncalves, Paula; Sampaio, Jose Paulo] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Ciencias Vida, UCIBIO REQUIMTE, P-2829516 Caparica, Portugal.
[Jeffries, Thomas W.] Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA.
[Lachance, Marc-Andre] Univ Western Ontario, Dept Biol, London, ON N6A 5B7, Canada.
[Libkind, Diego] Consejo Nacl Invest Cient & Tecn, UNComahue, Inst Invest Biodiversidad & Medioambiente INIBIOM, Lab Microbiol Aplicada & Biotecnol, San Carlos De Bariloche, Rio Negro, Argentina.
[Rosa, Carlos A.] Univ Fed Minas Gerais, ICB, Dept Microbiol, BR-31270901 Belo Horizonte, MG, Brazil.
[Kurtzman, Cletus P.] ARS, Bacterial Foodborne Pathogens & Mycol Res Unit, Natl Ctr Agr Utilizat Res, USDA, Peoria, IL USA.
RP Hittinger, CT (reprint author), Univ Wisconsin, Genet Lab, Genome Ctr Wisconsin, Wisconsin Energy Inst,JF Crow Inst Study Evolut, Madison, WI 53706 USA.
EM cthittinger@wisc.edu
RI Sampaio, Jose Paulo/C-5532-2011; Goncalves, Paula/B-4016-2010;
OI Goncalves, Paula/0000-0003-2103-1060; Kominek,
Jacek/0000-0002-1916-0122; Sampaio, Jose/0000-0001-8145-5274; Rokas,
Antonis/0000-0002-7248-6551
FU National Science Foundation [DEB-1442148, DEB-1253634, DEB-1442113]; DOE
Great Lakes Bioenergy Research Center (DOE Office of Science BER)
[DE-FC02-07ER64494]; USDA National Institute of Food and Agriculture
[1003258]; Alexander von Humboldt Foundation; Pew Charitable Trusts;
National Institutes of Health (NIAID) [AI105619]; March of Dimes;
Natural Science and Engineering Research Council of Canada; CONICET;
Universidad Nacional del Comahue [B171]; FONCyT [PICT 2014-2542];
Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
(CNPq)-Brazil
FX We thank the many colleagues who alerted us to relevant literature and
apologize to those whose work was excluded due to space limitations or
oversight. Mention of trade names or commercial products in this
publication is solely for the purpose of providing specific information
and does not imply recommendation or endorsement by the U.S. Department
of Agriculture. USDA is an equal opportunity provider and employer.
Research in the Hittinger Lab is supported by the National Science
Foundation (Grant Nos. DEB-1442148 to CTH and CPK, DEB-1253634 to CTH);
the DOE Great Lakes Bioenergy Research Center (DOE Office of Science BER
DE-FC02-07ER64494); the USDA National Institute of Food and Agriculture
(Hatch project 1003258); the Alexander von Humboldt Foundation (CTH is
an Alfred Toepfer Faculty Fellow); and the Pew Charitable Trusts (CTH is
a Pew Scholar in the Biomedical Sciences). Research in the Rokas Lab is
supported by the National Science Foundation (DEB-1442113); the National
Institutes of Health (NIAID, AI105619); and the March of Dimes. Research
in the Lachance Lab is supported by the Natural Science and Engineering
Research Council of Canada. Research in the Libkind Lab is supported by
CONICET, Universidad Nacional del Comahue (B171), and FONCyT (PICT
2014-2542). Research in the Rosa Lab is supported by the Conselho
Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)-Brazil.
NR 105
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U1 10
U2 33
PU CURRENT BIOLOGY LTD
PI LONDON
PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND
SN 0959-437X
EI 1879-0380
J9 CURR OPIN GENET DEV
JI Curr. Opin. Genet. Dev.
PD DEC
PY 2015
VL 35
BP 100
EP 109
DI 10.1016/j.gde.2015.10.008
PG 10
WC Cell Biology; Genetics & Heredity
SC Cell Biology; Genetics & Heredity
GA CZ1XZ
UT WOS:000366900600015
PM 26649756
ER
PT J
AU Ali, AA
Xu, CG
Rogers, A
McDowell, NG
Medlyn, BE
Fisher, RA
Wullschleger, SD
Reich, PB
Vrugt, JA
Bauerle, WL
Santiago, LS
Wilson, CJ
AF Ali, Ashehad A.
Xu, Chonggang
Rogers, Alistair
McDowell, Nathan G.
Medlyn, Belinda E.
Fisher, Rosie A.
Wullschleger, Stan D.
Reich, Peter B.
Vrugt, Jasper A.
Bauerle, William L.
Santiago, Louis S.
Wilson, Cathy J.
TI Global-scale environmental control of plant photosynthetic capacity
SO ECOLOGICAL APPLICATIONS
LA English
DT Article
DE climate change; climate variables; Earth System Models; leaf nitrogen
content; photosynthetic capacity; plant traits
ID ELEVATED CARBON-DIOXIDE; NITROGEN-USE EFFICIENCY; SIMULATED AUTUMN
CONDITIONS; BIOCHEMICALLY BASED MODEL; INCREASED AIR-TEMPERATURE; LEAF
LIFE-SPAN; DECIDUOUS FOREST; STOMATAL CONDUCTANCE; CLIMATE-CHANGE;
TERRESTRIAL BIOSPHERE
AB Photosynthetic capacity, determined by light harvesting and carboxylation reactions, is a key plant trait that determines the rate of photosynthesis; however, in Earth System Models (ESMs) at a reference temperature, it is either a fixed value for a given plant functional type or derived from a linear function of leaf nitrogen content. In this study, we conducted a comprehensive analysis that considered correlations of environmental factors with photosynthetic capacity as determined by maximum carboxylation (V-c,V-m) rate scaled to 25 degrees C (i.e., V-c,V-25; mu mol CO2.m(-2).s(-1)) and maximum electron transport rate (Jmax) scaled to 25 degrees C (i.e., J(25); mu mol electron m(-2).s(-1)) at the global scale. Our results showed that the percentage of variation in observed Vc,25 and J25 explained jointly by the environmental factors (i.e., day length, radiation, temperature, and humidity) were 2-2.5 times and 6-9 times of that explained by area-based leaf nitrogen content, respectively. Environmental factors influenced photosynthetic capacity mainly through photosynthetic nitrogen use efficiency, rather than through leaf nitrogen content. The combination of leaf nitrogen content and environmental factors was able to explain similar to 56% and similar to 66% of the variation in V-c,V-25 and J(25) at the global scale, respectively. Our analyses suggest that model projections of plant photosynthetic capacity and hence land atmosphere exchange under changing climatic conditions could be substantially improved if environmental factors are incorporated into algorithms used to parameterize photosynthetic capacity in ESMs.
C1 [Ali, Ashehad A.; Xu, Chonggang; McDowell, Nathan G.; Wilson, Cathy J.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
[Ali, Ashehad A.; Vrugt, Jasper A.] Univ Calif Irvine, Dept Civil & Environm Engn, Irvine, CA 92697 USA.
[Rogers, Alistair] Brookhaven Natl Lab, Biol Environm & Climate Sci Dept, Upton, NY 11973 USA.
[Medlyn, Belinda E.] Univ Western Sydney, Hawaii Inst Environm, Hawkesbury, NSW, Australia.
[Fisher, Rosie A.] Natl Ctr Atmospher Res, Climate & Global Dynam, Boulder, CO 80305 USA.
[Wullschleger, Stan D.] Oak Ridge Natl Lab, Div Environm Sci, Climate Change Sci Inst, Oak Ridge, TN 37831 USA.
[Reich, Peter B.] Univ Minnesota, Dept Forest Resources, Minneapolis, MN 55455 USA.
[Reich, Peter B.] Univ Western Sydney, Hawkesbury Inst Environm, Penrith, NSW 1797, Australia.
[Vrugt, Jasper A.] Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA.
[Bauerle, William L.] Colorado State Univ, Dept Hort & Landscape Architecture, Ft Collins, CO 80523 USA.
[Bauerle, William L.] Colorado State Univ, Dept Ecol, Ft Collins, CO 80523 USA.
[Santiago, Louis S.] Univ Calif Riverside, Dept Bot & Plant Sci, Riverside, CA 92521 USA.
RP Ali, AA (reprint author), Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA.
EM ali.ashehad@gmail.com
RI Santiago, Louis/E-3185-2016; Rogers, Alistair/E-1177-2011; Wullschleger,
Stan/B-8297-2012;
OI Santiago, Louis/0000-0001-5994-6122; Rogers,
Alistair/0000-0001-9262-7430; Wullschleger, Stan/0000-0002-9869-0446;
Xu, Chonggang/0000-0002-0937-5744
FU UC Laboratory Fees Research Program [237285]; NGEE-Tropics program at
office of Biological and Environmental Research, DOE Office of Science
FX This work is funded by the UC Laboratory Fees Research Program (Grant
ID: 237285) and the NGEE-Tropics program at the office of Biological and
Environmental Research, DOE Office of Science. This submission is under
public release with the approved LA-UR-13-27167. Conflict of interest:
none declared.
NR 115
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U1 13
U2 56
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1051-0761
EI 1939-5582
J9 ECOL APPL
JI Ecol. Appl.
PD DEC
PY 2015
VL 25
IS 8
BP 2349
EP 2365
DI 10.1890/14-2111.1.sm
PG 17
WC Ecology; Environmental Sciences
SC Environmental Sciences & Ecology
GA CZ6KR
UT WOS:000367210700022
PM 26910960
ER
PT J
AU French, RJ
Black, SK
Myers, M
Stunkel, J
Gjersing, E
Iisa, K
AF French, Richard J.
Black, Stuart K.
Myers, Michele
Stunkel, James
Gjersing, Erica
Iisa, Kristiina
TI Hydrotreating the Organic Fraction of Biomass Pyrolysis Oil to a
Refinery Intermediate
SO ENERGY & FUELS
LA English
DT Article
ID BIO-OIL; CATALYTIC HYDRODEOXYGENATION; ADVANCED BIOFUELS; LIGNIN;
IMPACT; FUELS; UNITS
AB The effect of the catalyst type, hydroprocessing conditions, and feed preparation on the mild hydrotreating of biomass pyrolytic lignin was examined. Pyrolytic lignin oils were produced by water separation at 1:1 and 3:1 water/oil mass ratios. Hydrotreating was performed in a semi-batch reactor at three severities using sulfided NiMo/Al2O3, Pd/C, and Pt/C catalysts. Over half of the carbon in the pyrolytic lignin could be converted to a low-oxygen (<5%), low-acid, volatile, hydrocarbon-miscible liquid product. This was achieved with all three catalysts at the most severe condition (400 degrees C and 2450 psig) and with Pt/C at somewhat less severe conditions. Nuclear magnetic resonance (NMR) analyses indicated that the remaining oxygen is largely phenolic in character. Hydrotreating of the organic fraction (pyrolytic lignin) gave oil with better properties, lower 0 and lower acidity, than hydrotreating of the whole oil at equivalent conditions.
C1 [French, Richard J.; Black, Stuart K.; Myers, Michele; Stunkel, James; Gjersing, Erica; Iisa, Kristiina] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA.
RP French, RJ (reprint author), Natl Renewable Energy Lab, Natl Bioenergy Ctr, 15013 Denver West Parkwy, Golden, CO 80401 USA.
EM richard.french@nrel.gov
FU Bioenergy Technologies Office, Office of Energy Efficiency and Renewable
Energy, United States Department of Energy (DOE) [DE-AC36-08GO28308];
National Renewable Energy Laboratory (NREL) [15590, 25579]
FX This work was supported by the Bioenergy Technologies Office, Office of
Energy Efficiency and Renewable Energy, United States Department of
Energy (DOE), under Contract DE-AC36-08GO28308 with the National
Renewable Energy Laboratory (NREL), Agreements 15590 and 25579. The U.S.
Government retains and the publisher, by accepting the article for
publication, acknowledges that the U.S. Government retains a
nonexclusive, paid up, irrevocable, world-wide license to publish or
reproduce the published form of this work or allow others to do so, for
U.S. Government purposes.
NR 29
TC 3
Z9 3
U1 3
U2 11
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
EI 1520-5029
J9 ENERG FUEL
JI Energy Fuels
PD DEC
PY 2015
VL 29
IS 12
BP 7985
EP 7992
DI 10.1021/acs.energyfuels.5b01440
PG 8
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA CZ1PO
UT WOS:000366878000025
ER
PT J
AU Howe, D
Taasevigen, D
Gerber, M
Gray, M
Fernandez, C
Saraf, L
Garcia-Perez, M
Wolcott, M
AF Howe, Daniel
Taasevigen, Danny
Gerber, Mark
Gray, Michel
Fernandez, Carlos
Saraf, Laxmikant
Garcia-Perez, Manuel
Wolcott, Michael
TI Bed Agglomeration during the Steam Gasification of a High-Lignin Corn
Stover Simultaneous Saccharification and Fermentation (SSF) Digester
Residue
SO ENERGY & FUELS
LA English
DT Article
ID BIOMASS GASIFICATION; TAR FORMATION; WHEAT-STRAW; FUELS; COMBUSTION;
WOOD; TEMPERATURE; PYROLYSIS; GAS; OIL
AB This research investigates the bed agglomeration phenomena during the steam gasification of a high-lignin residue produced from the simultaneous saccharification and fermentation (SSF) of corn stover in a bubbling fluidized bed. The studies were conducted at 895 degrees C using alumina as bed material. Biomass was fed at 1.5 kg/h, while steam was fed to give a velocity equal to 2.5 times the minimum fluidization velocity, with a steam/carbon ratio of 0.9. The pelletized feedstock was co-fed with a cooling nitrogen stream to mitigate feed line plugging issues. Tar production was high at 50.3 g/Nm(3), and the fraction of C10+ compounds was greater than that observed in the gasification of traditional lignocellulosic feedstocks. Carbon closures over 94% were achieved for all experiments. Bed agglomeration was found to be problematic, indicated by pressure drop increases observed below the bed and upstream of the feed line. Two size categories of solids were recovered from the reactor: +0.25 mm and -0.25 mm. After 2.75 h of experiment, 61.7 wt % was recovered as -0.25 mm particles and 38.2 wt % of the recovered reactor solids were +0.25 mm. A sizable percentage (31.8 wt %) was +0.841 mm. The -0.25 mm particles were mainly formed by the initial bed material (Al2O3). Almost 50 wt % of the +0.841 mm particles was found to be formed by organics. The unreacted carbon remaining in the reactor resulted in a low conversion rate to product gas. Inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning electron microscopy-energy-dispersive spectroscopy (SEM-EDS), and X-ray diffraction (XRD) confirmed that the large agglomerates (+0.841 mm) were not encapsulated bed material but rather ungasified feedstock pellets with sand particles attached to it.
C1 [Howe, Daniel; Taasevigen, Danny; Gerber, Mark; Gray, Michel; Fernandez, Carlos; Saraf, Laxmikant] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Garcia-Perez, Manuel; Wolcott, Michael] Washington State Univ, Pullman, WA 99164 USA.
RP Howe, D (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA.
EM howe@pnnl.gov
FU U.S. Department of Energy [DE-AC05-76RL01830]
FX This manuscript has been authored by Battelle Memorial Institute, under
Contract No. DE-AC05-76RL01830 with the U.S. Department of Energy. The
U.S. Government retains and the publisher, by accepting the article for
publication, acknowledges that the United States Government retains a
nonexclusive, paid-up, irrevocable, worldwide license to publish or
reproduce the published form of this manuscript, or allow others to do
so, for U.S. Government purposes.
NR 49
TC 2
Z9 2
U1 2
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
EI 1520-5029
J9 ENERG FUEL
JI Energy Fuels
PD DEC
PY 2015
VL 29
IS 12
BP 8035
EP 8046
DI 10.1021/acs.energyfuels.5b01808
PG 12
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA CZ1PO
UT WOS:000366878000031
ER
PT J
AU Jones, K
Ramakrishnan, G
Uchimiya, M
Orlov, A
Castaldi, MJ
LeBlanc, J
Hiradate, S
AF Jones, Keith
Ramakrishnan, Girish
Uchimiya, Minori
Orlov, Alexander
Castaldi, Marco J.
LeBlanc, Jeffrey
Hiradate, Syuntaro
TI Fate of Higher-Mass Elements and Surface Functional Groups during the
Pyrolysis of Waste Pecan Shell
SO ENERGY & FUELS
LA English
DT Article
ID CARBON-DIOXIDE; ORGANIC-COMPOUNDS; BIOCHAR; SOIL; MICROTOMOGRAPHY;
SEQUESTRATION; SPECTROSCOPY; TEMPERATURE; FEEDSTOCK; CHAR
AB Thermochemical conversion of agricultural wastes to bioenergy has a potential to play forefront roles within the context of the food, energy, and water nexus. The biochar solid product of pyrolysis is a promising tool to manage food crop production and water resources by means of soil amendment. The goal of this study was to understand the fate of surface functional groups and higher-atomic-mass elements during the pyrolysis of pecan shell, which is known to accumulate calcium oxalate. Pecan shell feedstock and biochars were analyzed ex situ using X-ray computed microtomography and solid-state C-13 cross-polarization and magic-angle-spinning NMR spectroscopy; the pyrolysis kinetics was monitored in situ by thermogravimetric analysis gas chromatography (TGA-GC). The NMR spectra indicated the greatest (i) reduction in O/N alkyl functionality and (ii) increase in the aromatic peak between 300 and 500 degrees C. Primary physical transformation was observed near 400 degrees C in the tomography slice images and corresponding attenuation coefficients. Key changes in physical structure (microtomography) as well as chemical constituents (solid-state NMR) of pecan shell at 300-500 degrees C coincided with the evolution of gaseous products (hydrogen, methane, carbon monoxide, carbon dioxide, ethylene, and ethane, as monitored in situ by TGA-GC) occurring at 200-500 degrees C. These observations followed the reported (0 formation and removal of carboxyl surface functional groups of biochar and (ii) conversion of calcium oxalate to carbonate, both occurring at the key transition temperature near 400 degrees C. Combined with the mass balance (99.7%) obtained for gas-, liquid-, and solid-phase products, these findings will facilitate reactor design to optimize syngas and bio-oil yields and manipulate the surface reactivity of biochar soil amendment.
C1 [Jones, Keith; Ramakrishnan, Girish; Uchimiya, Minori; Orlov, Alexander] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA.
[Jones, Keith] Brookhaven Natl Lab, Biol Environm & Climate Sci Dept, Upton, NY 11973 USA.
[Uchimiya, Minori] USDA ARS, So Reg Res Ctr, New Orleans, LA 70124 USA.
[Castaldi, Marco J.; LeBlanc, Jeffrey] CUNY City Coll, Dept Chem Engn, New York, NY 10031 USA.
[Hiradate, Syuntaro] Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 3058604, Japan.
RP Uchimiya, M (reprint author), SUNY Stony Brook, Dept Mat Sci & Engn, Room 314 Old Engn, Stony Brook, NY 11794 USA.
EM sophie.uchimiya@ars.usda.gov
NR 40
TC 2
Z9 2
U1 7
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
EI 1520-5029
J9 ENERG FUEL
JI Energy Fuels
PD DEC
PY 2015
VL 29
IS 12
BP 8095
EP 8101
DI 10.1021/acs.energyfuels.5b02428
PG 7
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA CZ1PO
UT WOS:000366878000039
ER
PT J
AU Macchiavelli, AO
AF Macchiavelli, Augusto O.
TI How to Study Efimov States in Exotic Nuclei?
SO FEW-BODY SYSTEMS
LA English
DT Article
ID LIGHT HALO NUCLEI; UNIVERSAL ASPECTS
AB The existence of Efimov states in atomic nuclei has been predicted by several authors considering 3-body systems of the form Core-neutron-neutron. While these states appear elusive and very challenging experimentally, we discuss possible reactions that can be used to produce and study them in exotic (weakly-bound) nuclei. Following simple arguments, we show that cross-sections relative to the ground states should scale with the parameter lambda(0), which is the same scale factor for binding energies and radii. We derive back of the envelope estimates for: one-and two-neutron transfer reactions, and inelastic scattering. The (d, p) reaction appears as the most promising approach and we discuss in more detail some experimental considerations using the example of C-19(d, p)C-20. These initial estimates could serve as a starting point for more refined and realistic calculations, which will be required for careful experimental planning and further analysis.
C1 [Macchiavelli, Augusto O.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Macchiavelli, AO (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM aom@lbl.gov
FU U.S. Department of Energy, Office of Science, Office of Nuclear Physics
[DE-AC02-05CH11231]
FX I would like to thank the members of the LBNL Nuclear Structure Group
for fruitful discussions and H.L. Crawford for her careful reading of
the manuscript. I would also like to thank Prof. Tobias Frederico for
encouraging me to publish these ideas and for comments on the
manuscript. This material is based upon work supported by the U.S.
Department of Energy, Office of Science, Office of Nuclear Physics under
Contract No. DE-AC02-05CH11231.
NR 23
TC 2
Z9 2
U1 1
U2 1
PU SPRINGER WIEN
PI WIEN
PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
SN 0177-7963
EI 1432-5411
J9 FEW-BODY SYST
JI Few-Body Syst.
PD DEC
PY 2015
VL 56
IS 11-12
SI SI
BP 773
EP 778
DI 10.1007/s00601-015-0998-4
PG 6
WC Physics, Multidisciplinary
SC Physics
GA CZ3KC
UT WOS:000367002000008
ER
PT J
AU Forssen, C
Lundmark, R
Rotureau, J
Larsson, J
Lidberg, D
AF Forssen, Christian
Lundmark, Rikard
Rotureau, Jimmy
Larsson, Jonathan
Lidberg, David
TI Strongly Interacting Few-Fermion Systems in a Trap
SO FEW-BODY SYSTEMS
LA English
DT Article
ID SCATTERING
AB Few- and many-fermion systems on the verge of stability, and consisting of strongly interacting particles, appear in many areas of physics. The theoretical modeling of such systems is a very difficult problem. In this work we present a theoretical framework that is based on the rigged Hilbert space formulation. The few-body problem is solved by exact diagonalization using a basis in which bound, resonant, and non-resonant scattering states are included on an equal footing. Current experiments with ultracold atoms offer a fascinating opportunity to study universal properties of few-body systems with a high degree of control over parameters such as the external trap geometry, the number of particles, and even the interaction strength. In particular, particles can be allowed to tunnel out of the trap by applying a magnetic-field gradient that effectively lowers the potential barrier. The result is a tunable open quantum system that allows detailed studies of the tunneling mechanism. In this Paper we introduce our method and present results for the decay rate of two distinguishable fermions in a one-dimensional trap as a function of the interaction strength. In particular, we present for the first time several technical and numerical details of our approach, recently published in Lundmark et al. (Phys Rev A 91:041601, 2015). We also show results from a careful analysis of the numerical convergence.
C1 [Forssen, Christian; Lundmark, Rikard; Rotureau, Jimmy; Larsson, Jonathan; Lidberg, David] Chalmers, Dept Fundamental Phys, SE-41296 Gothenburg, Sweden.
[Forssen, Christian] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Forssen, Christian] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Forssen, C (reprint author), Chalmers, Dept Fundamental Phys, SE-41296 Gothenburg, Sweden.
EM christian.forssen@chalmers.se
RI Forssen, Christian/C-6093-2008; rotureau, jimmy/B-2365-2013
OI Forssen, Christian/0000-0003-3458-0480;
FU European Research Council under the European Community's Seventh
Framework Programme (FP7) / ERC [240603]; Swedish Foundation for
International Cooperation in Research and Higher Education (STINT)
[IG2012-5158]; European Centre for Theoretical Studies in Nuclear
physics and Related Areas (ECT*) in Trento; Institute for Nuclear Theory
at the University of Washington
FX The first author wishes to acknowledge the organizers and participiants
of the 7th International Workshop on the "Dynamics of Critically Stable
Quantum Few-Body Systems" in Santos, Brazil. The cross-disciplinary
theme of the meeting provided a very stimulating environment and
triggeredmany interesting discussions. The research leading to these
results has received funding from the European Research Council under
the European Community's Seventh Framework Programme (FP7/2007-2013) /
ERC Grant Agreement No. 240603, and the Swedish Foundation for
International Cooperation in Research and Higher Education (STINT,
IG2012-5158). The computations were performed on resources provided by
the Swedish National Infrastructure for Computing (SNIC) at
High-Performance Computing Center North (HPC2N) and at Chalmers Centre
for Computational Science and Engineering (C3SE). We thank the European
Centre for Theoretical Studies in Nuclear physics and Related Areas
(ECT*) in Trento, and the Institute for Nuclear Theory at the University
of Washington, for their hospitality and partial support during the
completion of this work. We are much indebted to D. Blume, M. Zhukov, N.
Zinner, and G. Zurn for stimulating discussions.
NR 20
TC 0
Z9 0
U1 1
U2 2
PU SPRINGER WIEN
PI WIEN
PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
SN 0177-7963
EI 1432-5411
J9 FEW-BODY SYST
JI Few-Body Syst.
PD DEC
PY 2015
VL 56
IS 11-12
SI SI
BP 837
EP 844
DI 10.1007/s00601-015-0989-5
PG 8
WC Physics, Multidisciplinary
SC Physics
GA CZ3KC
UT WOS:000367002000016
ER
PT J
AU Lau, GK
Benhamou, Y
Chen, GF
Li, J
Shao, Q
Ji, D
Li, F
Li, B
Liu, JL
Hou, JL
Sun, J
Wang, C
Chen, J
Wu, V
Wong, A
Po, L
Wong, C
Tsang, STY
Wang, YD
Ke, RA
Perelson, AS
Schinazi, RF
AF Lau, George K.
Benhamou, Yves
Chen, Guofeng
Li, Jin
Shao, Qing
Ji, Dong
Li, Fan
Li, Bing
Liu, Jialiang
Hou, Jinlin
Sun, Jian
Wang, Cheng
Chen, Jing
Wu, Vanessa
Wong, April
Po, Lei
Wong, Chris
Tsang, Stella Tsui Ying
Wang Yudong
Ke, Ruian
Perelson, Alan S.
Schinazi, Raymond F.
TI Complete cure after three weeks of all-oral triple-direct acting
antiviral (DAA) regimens in non-cirrhotic chronic hepatitis C genotype
1b Chinese subjects (SODAPI STUDY)
SO HEPATOLOGY
LA English
DT Meeting Abstract
C1 [Schinazi, Raymond F.] Emory Univ, Pediat, Atlanta, GA 30322 USA.
[Schinazi, Raymond F.] Vet Affairs Med Ctr, Atlanta, GA 30033 USA.
[Lau, George K.; Wang, Cheng; Chen, Jing; Wu, Vanessa; Wong, April; Wang Yudong] Humanity & Hlth Med Ctr, Div Gastroenterol & Hepatol, Hong Kong, Hong Kong, Peoples R China.
[Benhamou, Yves] Hop La Pitie Salpetriere, Serv Hepatol, Paris, France.
[Lau, George K.; Chen, Guofeng; Shao, Qing; Ji, Dong; Li, Fan; Li, Bing; Liu, Jialiang] 302 Hosp, Liver Cirrhosis Diag & Treatment Ctr 2, Beijing, Peoples R China.
[Li, Jin] 302 Hosp, Inst Infect Dis, Beijing, Peoples R China.
[Hou, Jinlin; Sun, Jian; Wang, Cheng] Southern Med Univ, State Key Lab Organ Failure Res, Guangdong Prov Key Lab Viral Hepatitis Res, Dept Infect Dis,Nanfang Hosp, Guangzhou, Guangdong, Peoples R China.
[Wong, Chris; Tsang, Stella Tsui Ying] Hong Kong Mol Pathol Diagnost Ctr, Hong Kong, Hong Kong, Peoples R China.
[Ke, Ruian; Perelson, Alan S.] Los Alamos Natl Lab, Theoret Biol & Biophys, Los Alamos, NM USA.
RI Schinazi, Raymond/B-6777-2017
NR 0
TC 3
Z9 3
U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0270-9139
EI 1527-3350
J9 HEPATOLOGY
JI Hepatology
PD DEC
PY 2015
VL 62
IS 6
MA LB-23
BP 1394A
EP 1394A
PG 1
WC Gastroenterology & Hepatology
SC Gastroenterology & Hepatology
GA CZ3OF
UT WOS:000367013200024
ER
PT J
AU Zhang, ZF
White, SK
White, MD
AF Zhang, Z. Fred
White, Signe K.
White, Mark D.
TI Delineating the horizontal plume extent and CO2 distribution at geologic
sequestration sites
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Area of Review; Carbon sequestration; Reservoir simulation
ID STORAGE
AB Geologic carbon sequestration is the process of injecting carbon dioxide captured from an industrial source into the subsurface for long-term storage. An Area of Review (AoR) evaluation is one of the requirements for obtaining a Class VI permit under the Underground Injection Control Program of the U.S. Environmental Protection Agency. The Class VI rule requires that multi-phase computational modeling be used to delineate the Area of Review, based on the horizontal extent of the separate-phase CO2 plume. A new approach is presented to quantify the plume extent of CO2 based on the vertically integrated mass per area (VIMPA). The distribution of CO2 mass in a horizontal plane is described as VIMPA contour lines. The plume extent can be defined by either a contour line of a pre-defined VIMPA value or a contour line within which a certain percentage of CO2 mass is contained. The method was demonstrated by a hypothetical injection of CO2 into a deep saline aquifer. The results indicate that the VIMPA decreases with distance in an exponential manner and hence, most of the injected CO2 resides in a much smaller area near the injection wells. The VIMPA approach for determining the plume extent applies to all injection scenarios regardless of the spatial variability of the properties of the injection zone and allows for the calculation of the CO2 plume extent to be standardized for injection permit applications. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Zhang, Z. Fred; White, Signe K.; White, Mark D.] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA.
RP Zhang, ZF (reprint author), Pacific NW Natl Lab, Energy & Environm Directorate, Hydrol Grp, 902 Battelle Blvd, Richland, WA 99352 USA.
EM fred.zhang@pnnl.gov
OI Zhang, Fred/0000-0001-8676-6426
FU Department of Energy [DE-FE0001882, DE-FE0005054]
FX This material is based upon work supported by the Department of Energy
under Award Number DE-FE0001882 and Award Number DE-FE0005054. For more
information on FutureGen 2.0, please visit www.futuregenalliance.org.
NR 17
TC 2
Z9 2
U1 1
U2 1
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
EI 1878-0148
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD DEC
PY 2015
VL 43
BP 141
EP 148
DI 10.1016/j.ijggc.2015.10.018
PG 8
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA CZ4YX
UT WOS:000367110200014
ER
PT J
AU Hallenbeck, AP
Egbebi, A
Resnik, KP
Hopkinson, D
Anna, SL
Kitchin, JR
AF Hallenbeck, Alexander P.
Egbebi, Adefemi
Resnik, Kevin P.
Hopkinson, David
Anna, Shelley L.
Kitchin, John R.
TI Comparative microfluidic screening of amino acid salt solutions for
post-combustion CO2 capture
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Lysine; Segmented flow; Raman; Microfluidic
ID CARBON-DIOXIDE ABSORPTION; AQUEOUS POTASSIUM-SALT; MASS-TRANSFER;
FLUE-GAS; SOLVENTS; MICROCHANNEL; DEGRADATION; BICARBONATE; DISSOLUTION;
SOLUBILITY
AB The CO2 absorption capacity and rate of aqueous solutions of MEA and the potassium salts of glycine, taurine, proline, and lysine were compared in a microfluidic device. These properties were measured by tracking the volume change of an entrained CO2 gas plug as it traveled through a microfluidic channel. The potassium salt of lysine, which contains two primary amine functional groups, exhibited the highest rich CO2 loading, >50% higher than MEA. The salts of glycine, and taurine exhibited similar absorption capacity to MEA, and the salt of proline exhibited the lowest absorption capacity. The trend in absorption capacities of the potassium salt of lysine and MEA was also observed in a set of breakthrough CSTR experiments. Raman spectroscopy was used to analyze the absorbent solutions before exposure to CO2 as well as the reactor effluent. Spectral features of carbamate, carbonate, and bicarbonate were identified in the effluent spectra. The effectiveness of the microfluidic reactor as a solvent volume and time efficient screening tool is demonstrated. The results suggest further work should be done to evaluate the efficacy of the alkali salt of lysine as a post-combustion CO2 capture absorbent as it has potential to match or possibly improve upon the CO2 loading of MEA while offering advantages such as low toxicity and lower volatility. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Hallenbeck, Alexander P.; Egbebi, Adefemi; Resnik, Kevin P.; Hopkinson, David; Kitchin, John R.] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
[Hallenbeck, Alexander P.; Anna, Shelley L.; Kitchin, John R.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
[Egbebi, Adefemi; Resnik, Kevin P.] AECOM, Pittsburgh, PA 15236 USA.
RP Kitchin, JR (reprint author), Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
EM jkitchin@andrew.cmu.edu
OI EGBEBI, ADEFEMI/0000-0002-0734-053X
FU agency of the United States Government
FX "This report was prepared as an account of work sponsored by an agency
of the United States Government. Neither the United States Government
nor any agency thereof, nor any of their employees, makes any warranty,
express or implied, or assumes any legal liability or responsibility for
the accuracy, completeness, or usefulness of any information, apparatus,
product, or process disclosed, or represents that its use would not
infringe privately owned rights. Reference herein to any specific
commercial product, process, or service by trade name, trademark,
manufacturer, or otherwise does not necessarily constitute or imply its
endorsement, recommendation, or favoring by the United States Government
or any agency thereof. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United States
Government or any agency thereof."
NR 38
TC 0
Z9 0
U1 8
U2 17
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
EI 1878-0148
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD DEC
PY 2015
VL 43
BP 189
EP 197
DI 10.1016/j.ijggc.2015.10.026
PG 9
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA CZ4YX
UT WOS:000367110200019
ER
PT J
AU van Marrewijk, N
Mirzaei, B
Hayton, D
Gao, JR
Kao, TY
Hu, Q
Reno, JL
AF van Marrewijk, N.
Mirzaei, B.
Hayton, D.
Gao, J. R.
Kao, T. Y.
Hu, Q.
Reno, J. L.
TI Frequency Locking and Monitoring Based on Bi-directional Terahertz
Radiation of a 3rd-Order Distributed Feedback Quantum Cascade Laser
SO JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
LA English
DT Article
DE Terahertz; Quantum cascade lasers (QCLs); Frequency locking; Third-order
distributed feedback
ID PHASE-LOCKING; WIRE LASER
AB We have performed frequency locking of a dual, forward reverse emitting third-order distributed feedback quantum cascade laser (QCL) at 3.5 THz. By using both directions of THz emission in combination with two gas cells and two power detectors, we can for the first time perform frequency stabilization, while monitor the frequency locking quality independently. We also characterize how the use of a less sensitive pyroelectric detector can influence the quality of frequency locking, illustrating experimentally that the sensitivity of the detectors is crucial. Using both directions of terahertz (THz) radiation has a particular advantage for the application of a QCL as a local oscillator, where radiation from one side can be used for frequency/phase stabilization, leaving the other side to be fully utilized as a local oscillator to pump a mixer.
C1 [van Marrewijk, N.; Mirzaei, B.; Gao, J. R.] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands.
[Hayton, D.; Gao, J. R.] SRON Netherlands Inst Space Res, NL-3584 CA Utrecht, Netherlands.
[Kao, T. Y.; Hu, Q.] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA.
[Reno, J. L.] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
RP Mirzaei, B (reprint author), Delft Univ Technol, Kavli Inst Nanosci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands.
EM b.mirzaei@tudelft.nl
FU Leo Kouwenhoven; NWO; NATO SFP; NASA; NSF; US Department of Energy
National Nuclear Security Administration [DE-AC04-94AL85000]
FX The authors (B.M. and J.R.G.) acknowledge the support and encouragement
from Leo Kouwenhoven. We also would like to thank Jerome Faist's group
at ETH to help with making wire bonding to the laser for this experiment
and Y. Ren for his advice on the use of the FTS. The work in the
Netherlands is supported by NWO and NATO SFP. The work at MIT is
supported by NASA and NSF. The work at Sandia was performed, in part, at
the Center for Integrated Nanotechnologies, a US Department of Energy,
Office of Basic Energy Sciences, user facility. Sandia National
Laboratories is a multiprogram laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the US Department of Energy National Nuclear Security Administration
under contract DE-AC04-94AL85000.
NR 23
TC 1
Z9 1
U1 4
U2 11
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1866-6892
EI 1866-6906
J9 J INFRARED MILLIM TE
JI J. Infrared Millim. Terahertz Waves
PD DEC
PY 2015
VL 36
IS 12
BP 1210
EP 1220
DI 10.1007/s10762-015-0210-4
PG 11
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA CZ6GA
UT WOS:000367198000008
ER
PT J
AU Yun, D
Mo, K
Mohamed, W
Ye, B
Kirk, MA
Baldo, P
Xu, RQ
Yacout, AM
AF Yun, Di
Mo, Kun
Mohamed, Walid
Ye, Bei
Kirk, Marquis A.
Baldo, Peter
Xu, Ruqing
Yacout, Abdellatif M.
TI In situ TEM and synchrotron characterization of U-10Mo thin specimen
annealed at the fast reactor temperature regime
SO MATERIALS CHARACTERIZATION
LA English
DT Article
DE Transmission electron microscopy; Synchrotron radiation;
Recrystallization; U-Mo alloy fuel
ID U-MO FUEL; DISPERSION FUEL; DIFFUSION BARRIER; RECRYSTALLIZATION;
IRRADIATION; MICROSCOPY
AB U-Mo metallic alloys have been extensively used for the Reduced Enrichment for Research and Test Reactors (RERTR) program, which is now known as the Office of Material Management and Minimization under the Conversion Program. This fuel form has also recently been proposed as fast reactor metallic fuels in the recent DOE Ultra-high Burnup Fast Reactor project. In order to better understand the behavior of U-10Mo fuels within the fast reactor temperature regime, a series of annealing and characterization experiments have been performed.
Annealing experiments were performed in situ at the Intermediate Voltage Electron Microscope (IVEM-Tandem) facility at Argonne National Laboratory (ANL). An electro-polished U-10Mo alloy fuel specimen was annealed in situ up to 700 degrees C. At an elevated temperature of about 540 degrees C, the U-10Mo specimen underwent a relatively slow microstructure transition. Nano-sized grains were observed to emerge near the surface. At the end temperature of 700 degrees C, the near-surface microstructure had evolved to a nano-crystalline state. In order to clarify the nature of the observed microstructure, Laue diffraction and powder diffraction experiments were carried out at beam line 34-ID of the Advanced Photon Source (APS) at ANL Phases present in the as-annealed specimen were identified with both Laue diffraction and powder diffraction techniques. The U-10Mo was found to recrystallize due to thermally-induced recrystallization driven by a high density of pre-existing dislocations. A separate in situ annealing experiment was carried out with a Focused Ion Beam processed (FIB) specimen. A similar microstructure transition occurred at a lower temperature of about 460 degrees C with a much faster transition rate compared to the electro-polished specimen. (C) 2015 Elsevier Inc. All rights reserved.
C1 [Yun, Di; Mo, Kun; Mohamed, Walid; Ye, Bei; Kirk, Marquis A.; Baldo, Peter; Xu, Ruqing; Yacout, Abdellatif M.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Yun, Di] Xi An Jiao Tong Univ, Xian 710049, Peoples R China.
RP Yun, D (reprint author), Xi An Jiao Tong Univ, 28 Xian Ning West Rd, Xian 710049, Peoples R China.
EM diyun1979@xjtu.edu.cn
RI Yun, Di/K-6441-2013
OI Yun, Di/0000-0002-9767-3214
FU US Department of Energy [DE-AC02-06CH11357]
FX The authors would like to thank Javier Figueroa from ANL for providing
the original materials for this work, and Dr. Bo Yao for preparing the
FIB-processed specimen. The authors are also grateful for the many
useful discussions with Dr. G. L. Hofman and Dr. J. Rest from ANL
regarding the scientific observations. The authors are particularly
grateful for Dr. Jian Can for his comments on this work. This work was
supported under the US Department of Energy Contract DE-AC02-06CH11357.
NR 17
TC 0
Z9 0
U1 2
U2 4
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1044-5803
EI 1873-4189
J9 MATER CHARACT
JI Mater. Charact.
PD DEC
PY 2015
VL 110
BP 208
EP 214
DI 10.1016/j.matchar.2015.10.031
PG 7
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Materials Science, Characterization & Testing
SC Materials Science; Metallurgy & Metallurgical Engineering
GA CZ5AT
UT WOS:000367115200026
ER
PT J
AU Sun, P
Fang, ZZ
Koopman, M
Xia, Y
Paramore, J
Chandran, KSR
Ren, Y
Lu, J
AF Sun, Pei
Fang, Zhigang Zak
Koopman, Mark
Xia, Yang
Paramore, James
Chandran, K. S. Ravi
Ren, Yang
Lu, Jun
TI Phase Transformations and Formation of Ultra-Fine Microstructure During
Hydrogen Sintering and Phase Transformation (HSPT) Processing of
Ti-6Al-4V
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article
ID TEMPORARY ALLOYING ELEMENT; POWDER-METALLURGY TITANIUM;
MECHANICAL-PROPERTIES; FABRICATION; FEATURES
AB The hydrogen sintering and phase transformation (HSPT) process is a novel powder metallurgy method for producing Ti alloys, particularly the Ti-6Al-4V alloy, with ultra-fine microstructure in the as-sintered state. The ultra-fine microstructure is obtained as a direct result of the use of H-2 gas during sintering. The refinement of the microstructure during HSPT is similar to that of thermal hydrogen processing (THP) of bulk Ti alloys. For both THP and HSPT of Ti-6Al-4V alloy, the mechanisms of the grain refinement depend on the phase equilibria and phase transformations in the presence of hydrogen, which are surprisingly still not well established to date and are still subjected to research and debate. In recent work by the present authors, a pseudo-binary phase diagram of (Ti-6Al-4V)-H has been determined by using in situ synchrotron XRD and TGA/DSC techniques. Aided by this phase diagram, the current paper focuses on the series of phase transformations during sintering and cooling of Ti-6Al-4V in a hydrogen atmosphere and the mechanisms for the formation of the ultra-fine microstructures obtained. Using experimental techniques, including in situ synchrotron XRD, SEM, EBSD, and TEM, the microstructural refinement was found to be the result of (1) the precipitation of ultra-fine alpha/alpha(2) within coarse beta grains during an isothermal hold at intermediate temperatures, and (2) the eutectoid transformation of beta -> alpha + delta d at approximately 473 K (200 degrees C). (C) The Minerals, Metals & Materials Society and ASM International 2015
C1 [Sun, Pei; Fang, Zhigang Zak; Koopman, Mark; Paramore, James; Chandran, K. S. Ravi] Univ Utah, Dept Met Engn, Salt Lake City, UT 84112 USA.
[Ren, Yang] Argonne Natl Lab, Xray Sci Div, Adv Photon Source, Lemont, IL 60439 USA.
[Lu, Jun] Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA.
RP Fang, ZZ (reprint author), Univ Utah, Dept Met Engn, Salt Lake City, UT 84112 USA.
EM zak.fang@utah.edu
OI Sun, Pei/0000-0002-1686-8037
FU U.S. Department of Energy, Innovative Manufacturing Initiative, through
the Advanced Manufacturing Office [DEEE0005761]; Office of Energy
Efficiency and Renewable Energy; U.S. DOE [DE-AC02-06CH11357]
FX The authors acknowledge funding support by the U.S. Department of
Energy, Innovative Manufacturing Initiative (DEEE0005761), through the
Advanced Manufacturing Office and the Office of Energy Efficiency and
Renewable Energy. Use of the Advanced Photon Source, an Office of
Science User Facility operated for the U.S. Department of Energy (DOE)
Office of Science by Argonne National Laboratory, was supported by the
U.S. DOE under Contract No. DE-AC02-06CH11357. The first author
acknowledges the valuable assistance of Dr. Xiangyi Luo, Mr. Chun Yu,
and Mr. Rick Spence for synchrotron X-ray experiments at Argonne
National Lab, and the help of Dr. Paulo Perez and Dr. Matt Nowell for
collecting EBSD data.
NR 47
TC 2
Z9 2
U1 1
U2 7
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
EI 1543-1940
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD DEC
PY 2015
VL 46A
IS 12
BP 5546
EP 5560
DI 10.1007/s11661-015-3141-8
PG 15
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA CZ1YU
UT WOS:000366902900010
ER
PT J
AU Carson, CG
Haljasmaa, IV
AF Carson, Cantwell G.
Haljasmaa, Igor V.
TI Proper calculation of a modulation half cycle from the Allan deviation
SO METROLOGIA
LA English
DT Article
DE Allan deviation; frequency modulation; time-keeping
ID STANDARDS
AB The Allan deviation is commonly used to determine the long term stability and precision of oscillators or otherwise continuous measurements. When periodic, fixed frequency modulation is present, it has been previously stated that the resulting peak in the estimate coincides with the half cycle of the modulation period. However, this peak is located at similar to 74.2% of the actual half cycle. In this work, we provide a generalized derivation of the modulation half cycle time constant from the Allan deviation estimate. Furthermore, the peak locations for the Hadamard, Modified Allan, and time deviations are shown to be approximately 84.2, 61.0, and 84.2%, respectively of the modulation half cycle time constants.
C1 [Carson, Cantwell G.; Haljasmaa, Igor V.] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Carson, CG (reprint author), Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
EM carsonc@netl.doe.gov
FU National Energy Technology Laboratory Research Participation Program; US
Department of Energy
FX This research was supported in part by an appointment to the National
Energy Technology Laboratory Research Participation Program, sponsored
by the US Department of Energy and administered by the Oak Ridge
Institute for Science and Education.
NR 7
TC 0
Z9 0
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0026-1394
EI 1681-7575
J9 METROLOGIA
JI Metrologia
PD DEC
PY 2015
VL 52
IS 6
BP L31
EP L33
DI 10.1088/0026-1394/52/6/L31
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA CZ1WW
UT WOS:000366897600002
ER
PT J
AU Sykulev, Y
Anikeeva, N
Blanchatte, C
Fischer, N
AF Sykulev, Yuri
Anikeeva, Nadia
Blanchatte, Craig
Fischer, Nick
TI Nanolipoprotein discoidal bilayers as membrane mimetics of MHC
clustering
SO MOLECULAR IMMUNOLOGY
LA English
DT Meeting Abstract
CT 8th International Workshop on Antigen Processing and Presentation
CY JUN 10-13, 2014
CL Philadelphia, PA
C1 [Sykulev, Yuri; Anikeeva, Nadia] Thomas Jefferson Univ, Dept Microbiol & Immunol, Philadelphia, PA 19107 USA.
[Sykulev, Yuri; Anikeeva, Nadia] Thomas Jefferson Univ, Kimmel Canc Ctr, Philadelphia, PA 19107 USA.
[Blanchatte, Craig; Fischer, Nick] Lawrence Livermore Natl Lab, Livermore, CA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0161-5890
J9 MOL IMMUNOL
JI Mol. Immunol.
PD DEC
PY 2015
VL 68
IS 2
BP 138
EP 138
PN A
PG 1
WC Biochemistry & Molecular Biology; Immunology
SC Biochemistry & Molecular Biology; Immunology
GA CZ0AO
UT WOS:000366767700034
ER
PT J
AU Wieder, WR
Cleveland, CC
Smith, WK
Todd-Brown, K
AF Wieder, William R.
Cleveland, Cory C.
Smith, W. Kolby
Todd-Brown, Katherine
TI Reply to 'Land unlikely to become large carbon source'
SO NATURE GEOSCIENCE
LA English
DT Letter
C1 [Wieder, William R.] Natl Ctr Atmospher Res, Climate & Global Dynam Div, Boulder, CO 80307 USA.
[Wieder, William R.] Univ Colorado, Inst Arct & Alpine Res, Boulder, CO 80309 USA.
[Cleveland, Cory C.] Univ Montana, Dept Ecosyst & Conservat Sci, Missoula, MT 59812 USA.
[Smith, W. Kolby] Univ Minnesota, Inst Environm, St Paul, MN 55108 USA.
[Todd-Brown, Katherine] Pacific NW Natl Lab, Biol Sci Div, Richland, WA 99354 USA.
RP Wieder, WR (reprint author), Natl Ctr Atmospher Res, Climate & Global Dynam Div, POB 3000, Boulder, CO 80307 USA.
EM wwieder@ucar.edu
OI WIEDER, WILLIAM/0000-0001-7116-1985
NR 4
TC 0
Z9 0
U1 2
U2 9
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1752-0894
EI 1752-0908
J9 NAT GEOSCI
JI Nat. Geosci.
PD DEC
PY 2015
VL 8
IS 12
BP 893
EP 894
PG 2
WC Geosciences, Multidisciplinary
SC Geology
GA CZ6GW
UT WOS:000367200200003
ER
PT J
AU Liu, XJ
Han, Y
Evans, JW
Engstfeld, AK
Behm, RJ
Tringides, MC
Hupalo, M
Lin, HQ
Huang, L
Ho, KM
Appy, D
Thiel, PA
Wang, CZ
AF Liu, Xiaojie
Han, Yong
Evans, James W.
Engstfeld, Albert K.
Behm, R. Juergen
Tringides, Michael C.
Hupalo, Myron
Lin, Hai-Qing
Huang, Li
Ho, Kai-Ming
Appy, David
Thiel, Patricia A.
Wang, Cai-Zhuang
TI Growth morphology and properties of metals on graphene
SO PROGRESS IN SURFACE SCIENCE
LA English
DT Review
DE Graphene; Metal adsorption on graphene; Growth morphology;
Metal-graphene interaction; Metal nanoclusters; Thermal stability
ID FEW-LAYER GRAPHENE; CHEMICAL-VAPOR-DEPOSITION; LITHIUM-ION BATTERIES;
DEPENDENT MORPHOLOGIES; INTERCALATION COMPOUNDS; ELECTRONIC-PROPERTIES;
CATALYTIC-PROPERTIES; UNDERNEATH GRAPHENE; BIMETALLIC CLUSTERS;
EPITAXIAL GRAPHENE
AB Graphene, a single atomic layer of graphite, has been the focus of recent intensive studies due to its novel electronic and structural properties. Metals grown on graphene also have been of interest because of their potential use as metal contacts in graphene devices, for spintronics applications, and for catalysis. All of these applications require good understanding and control of the metal growth morphology, which in part reflects the strength of the metal graphene bond. Also of importance is whether the interaction between graphene and metal is sufficiently strong to modify the electronic structure of graphene. In this review, we will discuss recent experimental and computational studies related to deposition of metals on graphene supported on various substrates (SiC, SiO2, and hexagonal close-packed metal surfaces). Of specific interest are the metal graphene interactions (adsorption energies and diffusion barriers of metal adatoms), and the crystal structures and thermal stability of the metal nanoclusters. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Liu, Xiaojie] NE Normal Univ, Ctr Quantum Sci, Changchun 130117, Peoples R China.
[Liu, Xiaojie] NE Normal Univ, Sch Phys, Changchun 130117, Peoples R China.
[Han, Yong; Evans, James W.; Tringides, Michael C.; Ho, Kai-Ming] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Han, Yong; Evans, James W.; Tringides, Michael C.; Hupalo, Myron; Ho, Kai-Ming; Appy, David; Thiel, Patricia A.; Wang, Cai-Zhuang] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
[Engstfeld, Albert K.; Behm, R. Juergen] Univ Ulm, Inst Surface Chem & Catalysis, D-89069 Ulm, Germany.
[Lin, Hai-Qing] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China.
[Huang, Li] South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China.
[Appy, David; Thiel, Patricia A.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
[Thiel, Patricia A.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
RP Wang, CZ (reprint author), Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
FU US Department of Energy, Basic Energy Sciences, Division of Materials
Science and Engineering; NSF Grant [CHE-1111500, DMR-1504593];
Baden-Wurttemburg-Stiftung via Competence Network "Functional
Nanostructures"; DFG [Be 1201/18-1]; "Fond national de la recherche"
Luxembourg [PHD09-13]; National Natural Science Foundation of China
[11204013]; China Postdoctoral Science Foundation [2013T60056]
FX Work at Ames Laboratory was supported by the US Department of Energy,
Basic Energy Sciences, Division of Materials Science and Engineering,
including a grant of computer time at the National Energy Research
Scientific Computing Centre (NERSC) in Berkeley, CA under Contract No.
DE-AC02-07CH11358. YH and JE were supported for the analysis of metal
NCs on metal-supported graphene by NSF Grant CHE-1111500 and
DMR-1504593. AKE and RJB were supported by the
Baden-Wurttemburg-Stiftung via the Competence Network "Functional
Nanostructures" and by the DFG via the Research Group 1376 (Be
1201/18-1). AKE acknowledges a fellowship from the "Fond national de la
recherche" Luxembourg (PHD09-13). XL also acknowledges the support by
the National Natural Science Foundation of China under Grant No.
11204013 and the China Postdoctoral Science Foundation under Grant No.
2013T60056.
NR 214
TC 15
Z9 15
U1 52
U2 148
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0079-6816
J9 PROG SURF SCI
JI Prog. Surf. Sci.
PD DEC
PY 2015
VL 90
IS 4
BP 397
EP 443
DI 10.1016/j.progsurf.2015.07.001
PG 47
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA CZ2UA
UT WOS:000366958900001
ER
PT J
AU Coventry, J
Andraka, C
Pye, J
Blanco, M
Fisher, J
AF Coventry, J.
Andraka, C.
Pye, J.
Blanco, M.
Fisher, J.
TI A review of sodium receiver technologies for central receiver solar
power plants
SO SOLAR ENERGY
LA English
DT Review
DE Sodium; Receiver; CSP; Central receiver; Solar; Review
ID HEAT-TRANSFER FLUIDS; FAST-REACTOR; TEMPERATURE; OPERATION; DESIGN;
SYSTEMS; METAL
AB This paper examines the potential of sodium receivers to increase the overall solar-to-electricity efficiency of central receiver solar power plants, also known as solar tower systems. It re-visits some of the key outcomes and conclusions from past sodium receiver experiments, in particular those at Sandia National Laboratories and Plataforma Solar de Almeria in the 1980s, and discusses some current development activities in the area. It also discusses research in sodium receivers with a liquid vapour phase change (heat pipes and pool boilers), to explore whether technologies developed for dish-Stirling systems have applicability for solar tower systems. Lessons learnt from experience in the nuclear industry with liquid sodium systems are discussed in the context of safety risks. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Coventry, J.; Pye, J.] Australian Natl Univ, Res Sch Engn, Canberra, ACT 0200, Australia.
[Andraka, C.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Blanco, M.] CSIRO Energy Flagship, Mayfield West, NSW 2304, Australia.
[Fisher, J.] Vast Solar, Sydney, NSW 2000, Australia.
RP Coventry, J (reprint author), Australian Natl Univ, Res Sch Engn, GPO Box 4, Canberra, ACT 0200, Australia.
EM joe.coventry@anu.edu.au
RI Blanco Muriel, Manuel/K-7648-2013
OI Blanco Muriel, Manuel/0000-0003-2800-9886
FU Australian Government, through the Australian Renewable Energy Agency
(ARENA); U.S. Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX This review was performed as part of the Australian Solar Thermal
Research Initiative (ASTRI), a project supported by the Australian
Government, through the Australian Renewable Energy Agency (ARENA).
Responsibility for the views, information or advice expressed herein is
not accepted by the Australian Government. Sandia National Laboratories
is a multi-program laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the U.S. Department of Energy's National Nuclear Security
Administration under contract DE-AC04-94AL85000.
NR 66
TC 4
Z9 4
U1 1
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-092X
J9 SOL ENERGY
JI Sol. Energy
PD DEC
PY 2015
VL 122
BP 749
EP 762
DI 10.1016/j.solener.2015.09.023
PG 14
WC Energy & Fuels
SC Energy & Fuels
GA CZ4XX
UT WOS:000367107500067
ER
PT J
AU Dussault, JM
Kohler, C
Goudey, H
Hart, R
Gosselin, L
Selkowitz, SE
AF Dussault, Jean-Michel
Kohler, Christian
Goudey, Howdy
Hart, Robert
Gosselin, Louis
Selkowitz, Stephen E.
TI Development and assessment of a low cost sensor for solar heat flux
measurements in buildings
SO SOLAR ENERGY
LA English
DT Article
DE Solar irradiance; Solar heat flux; Heat transfer; Solar sensor; Smart
window
ID OF-THE-ART
AB This paper presents a new type of low cost solar sensor, i.e. a black and white sensor (BWS). The BWS uses the difference in temperature of a white surface (solar energy highly reflected) and a black surface (solar energy highly absorbed) to estimate the solar heat flux through building openings. Results are obtained through a correlation based on a thermal model of the sensor. The correlation contains calibration factors determined from an initial on-site calibration. Results of estimated solar heat flux with two designs of the BWS over two different periods of time were compared with solar measurements of a high precision pyranometer. The two designs of BWS have shown mean weighted relative errors over the sampling periods under 4% for the daily integrated solar energy measured. Finally, a sensitivity analysis of the calibration period was conducted and it was observed that ideal calibration period should consider at least half a day of measurements, including solar peak time, and should be done during clear sky conditions. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Dussault, Jean-Michel; Gosselin, Louis] Univ Laval, Dept Mech Engn, Quebec City, PQ, Canada.
[Dussault, Jean-Michel; Kohler, Christian; Goudey, Howdy; Hart, Robert; Selkowitz, Stephen E.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Windows & Envelope Mat Grp, Berkeley, CA 94720 USA.
RP Gosselin, L (reprint author), Pavillon Adrien Pouliot,Local 1508-D,1065 Ave Med, Quebec City, PQ G1V 0A9, Canada.
EM Louis.Gosselin@gmc.ulaval.ca
FU Natural Sciences and Engineering Research Council of Canada (NSERC);
Assistant Secretary for Energy Efficiency and Renewable Energy, Building
Technologies Program, of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was supported by the Natural Sciences and Engineering Research
Council of Canada (NSERC) and by the Assistant Secretary for Energy
Efficiency and Renewable Energy, Building Technologies Program, of the
U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 19
TC 1
Z9 1
U1 5
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-092X
J9 SOL ENERGY
JI Sol. Energy
PD DEC
PY 2015
VL 122
BP 795
EP 803
DI 10.1016/j.solener.2015.09.033
PG 9
WC Energy & Fuels
SC Energy & Fuels
GA CZ4XX
UT WOS:000367107500071
ER
PT J
AU Zhang, J
Hodge, BM
Lu, SY
Hamann, HF
Lehman, B
Simmons, J
Campos, E
Banunarayanan, V
Black, J
Tedesco, J
AF Zhang, Jie
Hodge, Bri-Mathias
Lu, Siyuan
Hamann, Hendrik F.
Lehman, Brad
Simmons, Joseph
Campos, Edwin
Banunarayanan, Venkat
Black, Jon
Tedesco, John
TI Baseline and target values for regional and point PV power forecasts:
Toward improved solar forecasting
SO SOLAR ENERGY
LA English
DT Article
DE Numerical weather prediction; Operating reserve; Ramp forecasting; PV
power forecasting
ID IRRADIANCE FORECASTS; GRID INTEGRATION; PREDICTION; RADIATION; US
AB Accurate solar photovoltaic (PV) power forecasting allows utilities to reliably utilize solar resources on their systems. However, to truly measure the improvements that any new solar forecasting methods provide, it is important to develop a methodology for determining baseline and target values for the accuracy of solar forecasting at different spatial and temporal scales. This paper aims at developing a framework to derive baseline and target values for a suite of generally applicable, value-based, and custom-designed solar forecasting metrics. The work was informed by close collaboration with utility and independent system operator partners. The baseline values are established based on state-of-the-art numerical weather prediction models and persistence models in combination with a radiative transfer model. The target values are determined based on the reduction in the amount of reserves that must be held to accommodate the uncertainty of PV power output. The proposed reserve-based methodology is a reasonable and practical approach that can be used to assess the economic benefits gained from improvements in accuracy of solar forecasting. The financial baseline and targets can be translated back to forecasting accuracy metrics and requirements, which will guide research on solar forecasting improvements toward the areas that are most beneficial to power systems operations. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Zhang, Jie; Hodge, Bri-Mathias] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Lu, Siyuan; Hamann, Hendrik F.] IBM TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA.
[Lehman, Brad] Northeastern Univ, Boston, MA 02115 USA.
[Simmons, Joseph] Univ Arizona, Tucson, AZ 85721 USA.
[Campos, Edwin] Argonne Natl Lab, Argonne, IL 60439 USA.
[Banunarayanan, Venkat] US DOE, Washington, DC 20585 USA.
[Black, Jon] ISO New England, Holyoke, MA 01040 USA.
[Tedesco, John] Green Mt Power, Colchester, VT 05446 USA.
RP Zhang, J (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM jie.zhang@nrel.gov
OI Campos, Edwin/0000-0003-3766-7485
FU U.S. Department of Energy [DE-AC36-08-GO28308]; National Renewable
Energy Laboratory
FX This work was supported by the U.S. Department of Energy under Contract
No. DE-AC36-08-GO28308 with the National Renewable Energy Laboratory, as
part of the project work performed under the SunShot Initiative's
Improving the Accuracy of Solar Forecasting program. Valuable comments
from the utility partners (California-ISO and Tucson Electric Power) are
gratefully acknowledged.
NR 38
TC 4
Z9 4
U1 3
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-092X
J9 SOL ENERGY
JI Sol. Energy
PD DEC
PY 2015
VL 122
BP 804
EP 819
DI 10.1016/j.solener.2015.09.047
PG 16
WC Energy & Fuels
SC Energy & Fuels
GA CZ4XX
UT WOS:000367107500072
ER
PT J
AU Marion, B
AF Marion, Bill
TI A model for deriving the direct normal and diffuse horizontal irradiance
from the global tilted irradiance
SO SOLAR ENERGY
LA English
DT Article
DE Direct and diffuse irradiance; Global tilted irradiance; Model
ID SOLAR-RADIATION
AB A separation model was developed for deriving the direct normal irradiance (DNI) and the diffuse horizontal irradiance (DHI) from the global tilted irradiance (GTI). The model is based on the DIRINT model, but substitutes the use of the GTI in place of the global horizontal irradiance (GHI) for determining the global clearness index (K-t). Additionally, an iterative method is used to adjust K-t to improve the derived values of the DNI and the DHI. The model is referred to as the GTI-DIRINT model.
When using for model input the GTI measured with a pyranometer tilted at a small angle from the horizontal (10 degrees), the deviations between the measured DNI and DHI and the GTI-DIRINT-modeled DNI and DHI were essentially the same as those for the DIRINT model when using the GHI for model input. Increasing the tilt angle from horizontal (as great as 44 degrees for Eugene, Oregon) increased the deviations between the modeled and measured DNI and DHI, but the results were still reasonable.
The GTI-DIRINT model provides reasonable values of DNI and DHI from the GTI, and if they are subsequently used with the Perez tilted surface model to model the GTI for orientations within 30 degrees of the azimuth and tilt of the GTI used for model input, the result is as good or better than may be obtained when using a measured DNI and DHI, and without their significant instrumentation cost. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Marion, Bill] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Marion, B (reprint author), 15013 Denver West Pkwy, Golden, CO 80401 USA.
EM bill.marion@nrel.gov
FU U.S. Department of Energy [DE-AC36-08-GO28308]; National Renewable
Energy Laboratory (NREL)
FX This work was supported by the U.S. Department of Energy under Contract
No. DE-AC36-08-GO28308 with the National Renewable Energy Laboratory
(NREL). The author is thankful for the efforts of Stephen Barkaszi and
Mark Jacobs (Florida Solar Energy Center) who performed the irradiance
measurements in Cocoa, Florida; Frank Vignola, Rich Kessler, and Josh
Peterson (University of Oregon) who performed the irradiance
measurements in Eugene, Oregon; and Bill Sekulic, Jose Rodriguez, and
Greg Perrin (NREL) who performed the irradiance measurements in Golden,
Colorado.
NR 20
TC 3
Z9 3
U1 2
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-092X
J9 SOL ENERGY
JI Sol. Energy
PD DEC
PY 2015
VL 122
BP 1037
EP 1046
DI 10.1016/j.solener.2015.10.024
PG 10
WC Energy & Fuels
SC Energy & Fuels
GA CZ4XX
UT WOS:000367107500091
ER
PT J
AU Lee, ES
Gehbauer, C
Coffey, BE
McNeil, A
Stadler, M
Marnay, C
AF Lee, Eleanor S.
Gehbauer, Christoph
Coffey, Brian E.
McNeil, Andrew
Stadler, Michael
Marnay, Chris
TI Integrated control of dynamic facades and distributed energy resources
for energy cost minimization in commercial buildings
SO SOLAR ENERGY
LA English
DT Article
DE Distributed energy resources; Demand side management; Zero net energy
buildings; Dynamic windows; Control optimization
ID OPTIMIZATION
AB Controllable window, shading, and daylighting technologies provide an interesting opportunity to manage end use demands on distributed energy resources (DER) in ways that both complements the peak output profile of solar photovoltaic (PV) electricity generation and counteracts the peak demands on the utility grid produced by daytime commercial activities. The objective of this study is to explore whether dynamic facade technologies can play an enabling role in supporting a desired level of electricity service at either minimum operating cost or minimum carbon footprint through optimized integrated control with distributed energy resources. A proof-of-concept control system was developed by approximating non-linearities as piecewise-linear and determining the control state of both the demand and supply side components through global optimization. Annual simulations of a south-facing office zone with switchable electrochromic windows, solar photovoltaic electricity generation, and battery storage indicated that with optimized integrated demand supply side controls, the utility grid load profile could be lowered to nearly zero demand (5 W/m(2)) during the daytime when energy costs are highest. A full-scale outdoor field test in Berkeley, California verified this performance, demonstrating that during a week of sunny winter weather, electricity bills could be reduced by 63% compared to heuristic control of electrochromic windows without the photovoltaics and electrical storage. In both the simulated and measured cases, the photovoltaic system was sized to meet the peak perimeter zone load and the electrical storage was sized to be fully discharged by the end of the peak day. Technical and market challenges for achieving reliable optimal control for widespread applications are discussed. Published by Elsevier Ltd.
C1 [Lee, Eleanor S.; Gehbauer, Christoph; Coffey, Brian E.; McNeil, Andrew] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Bldg Technol & Urban Syst Div, Energy Technol Area, Berkeley, CA 94720 USA.
[Stadler, Michael] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Technol Area, Energy Storage & Distributed Resources Div, Berkeley, CA 94720 USA.
[Marnay, Chris] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Technol Area, Energy Anal & Environm Impacts Div, Berkeley, CA 94720 USA.
RP Lee, ES (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mailstop 90-3111,1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM eslee@lbl.gov
FU Assistant Secretary for Energy Efficiency and Renewable Energy, Office
of Building Technology, State and Community Programs, Office of Building
Research and Standards of the U.S. Department of Energy
[DE-AC02-05CH11231]; California Energy Commission through its Public
Interest Energy Research (PIER) Program on behalf of the citizens of
California
FX This work was supported by the Assistant Secretary for Energy Efficiency
and Renewable Energy, Office of Building Technology, State and Community
Programs, Office of Building Research and Standards of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231 and by the
California Energy Commission through its Public Interest Energy Research
(PIER) Program on behalf of the citizens of California.
NR 19
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U1 5
U2 17
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-092X
J9 SOL ENERGY
JI Sol. Energy
PD DEC
PY 2015
VL 122
BP 1384
EP 1397
DI 10.1016/j.solener.2015.11.003
PG 14
WC Energy & Fuels
SC Energy & Fuels
GA CZ4XX
UT WOS:000367107500122
ER
PT J
AU Zhu, XJ
Su, M
Manickam, K
Zhang, WJ
AF Zhu, Xuejun
Su, Michael
Manickam, Kadhirvel
Zhang, Wenjun
TI Bacterial Genome Mining of Enzymatic Tools for Alkyne Biosynthesis
SO ACS CHEMICAL BIOLOGY
LA English
DT Article
ID CYANOBACTERIUM LYNGBYA-MAJUSCULA; III POLYKETIDE SYNTHASE;
ESCHERICHIA-COLI; NATURAL-PRODUCTS; CLICK CHEMISTRY; ACID SYNTHESIS;
SYSTEMS; STRAIN; GENES
AB The alkyne is an important functionality widely used in material science, pharmaceutical science, and chemical biology, but the importance of this functionality is contrasted by the-very limited number of enzymes known to be involved in alkyne biosynthesis. We recently reported the first known carrier protein-dependent pathway for terminal alkyne formation, and in silk analysis suggested that this mechanism could be widespread in bacteria. In this paper, we screened additional homologous gene cassettes presumed to be involved in alkyne biosynthesis using both in vitro biochemical study and an E. coli-polyketide synthase (PKS) reporting system for in vivo analysis. We discovered and characterized a new terminal alkyne biosynthetic pathway comprised of TtuA, -B, and -C from Teredinibacter turnerae T7901. While the acyl-CoA ligase homologue (TtuA) demonstrated promiscuity in the activation and loading of medium-chain fatty acids onto the carrier protein (TtuC), the desaturase homologue (TtuB) showed stringent substrate specificity toward C-10 fatty acyl moieties. In addition, TtuB was demonstrated to be a bifunctional desaturase/acetylenase that efficiently catalyzed two sequential O-2-dependent dehydrogenation reactions. A novel terminal-alkyne bearing polyketide was further produced upon coexpression of ttuABC and a PKS gene in E. coli. The discovery and characterization of TtuA, -B, and -C provides us with a new bifunctional desaturase/acetylenase for mechanistic and structural study and expands the scarce enzyme inventory for the biosynthesis of the alkyne functionality, which has important applications in synthetic and chemical biology.
C1 [Zhu, Xuejun; Su, Michael; Zhang, Wenjun] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
[Manickam, Kadhirvel] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
[Zhang, Wenjun] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Zhang, WJ (reprint author), Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
EM wjzhang@berkeley.edu
FU Pew Scholars Program; National Institutes of Health [DP2AT009148]
FX This research was financially supported by the Pew Scholars Program and
the National Institutes of Health (DP2AT009148). We thank I. Abe (the
University of Tokyo) for providing hspks1, J. Zhan (Utah State
University) for providing csyA, H. Zhao (the University of Illinois,
Urbana-Champaign) for providing oras, and M. Chang (UC Berkeley) for
providing pSV272.1. We also thank S. Bauer (UC Berkeley) for assisting
with LC-HRMS analysis, J. Pelton (UC Berkeley) for helping with NMR
spectroscopic analysis, and J. Liu (UC Berkeley) for valuable
suggestions in the preparation of the manuscript.
NR 28
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U1 5
U2 34
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1554-8929
EI 1554-8937
J9 ACS CHEM BIOL
JI ACS Chem. Biol.
PD DEC
PY 2015
VL 10
IS 12
BP 2785
EP 2793
DI 10.1021/acschembio.5b00641
PG 9
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA CZ1OO
UT WOS:000366875400014
PM 26441143
ER
PT J
AU Kerfeld, CA
AF Kerfeld, Cheryl A.
TI Plug-and-play for improving primary productivity
SO AMERICAN JOURNAL OF BOTANY
LA English
DT Editorial Material
DE modularity; synthetic biology; carboxysome; RuBisCO; photorespiration
ID RUBISCO; BIOLOGY
C1 [Kerfeld, Cheryl A.] Michigan State Univ, MSU DOE Plant Res Lab, E Lansing, MI 48824 USA.
[Kerfeld, Cheryl A.] Michigan State Univ, Dept Biochem & Mol Biol, E Lansing, MI 48824 USA.
[Kerfeld, Cheryl A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Kerfeld, Cheryl A.] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA.
[Kerfeld, Cheryl A.] Berkeley Synthet Biol Inst, Berkeley, CA 94720 USA.
RP Kerfeld, CA (reprint author), Michigan State Univ, MSU DOE Plant Res Lab, E Lansing, MI 48824 USA.
EM ckerfeld@lbl.gov
NR 9
TC 2
Z9 2
U1 1
U2 4
PU BOTANICAL SOC AMER INC
PI ST LOUIS
PA PO BOX 299, ST LOUIS, MO 63166-0299 USA
SN 0002-9122
EI 1537-2197
J9 AM J BOT
JI Am. J. Bot.
PD DEC
PY 2015
VL 102
IS 12
BP 1949
EP 1950
DI 10.3732/ajb.1500409
PG 2
WC Plant Sciences
SC Plant Sciences
GA CY8WG
UT WOS:000366688800001
PM 26656128
ER
PT J
AU Gartman, BN
Qafoku, NP
Szecsody, JE
Kukkadapu, RK
Wang, ZM
Wellman, DM
Truex, MJ
AF Gartman, Brandy N.
Qafoku, Nikolla P.
Szecsody, James E.
Kukkadapu, Ravi K.
Wang, Zheming
Wellman, Dawn M.
Truex, Michael J.
TI Uranium fate in Hanford sediment altered by simulated acid waste
solutions
SO APPLIED GEOCHEMISTRY
LA English
DT Article
DE Uranium; Uranium contamination; Uranium sorption; Acid conditions;
Hanford sediments
ID VADOSE ZONE SEDIMENTS; HUMIC-ACID; OPALINUS CLAY;
MOSSBAUER-SPECTROSCOPY; SUBSURFACE SEDIMENT; ADSORPTION; SORPTION;
URANYL; COMPLEXATION; GOETHITE
AB Infiltration of aqueous acidic waste to the subsurface may induce conditions that alter contaminant transport. Experiments were conducted to examine the effects of low pore water pH and associated changes to sediment properties on U(VI) behavior in sediments. Macroscopic batch experiments were combined with a variety of bulk characterization studies (Mossbauer and laser spectroscopy), micron-scale inspections (m-XRF), and molecular scale interrogations (XANES) with the objectives to: 1) determine the extent of U(VI) partitioning to Hanford sediments exposed to acidic waste simulants and held at pH = 2, pH = 5, or under neutral conditions (pH = 8) at varying ionic strength, and in the presence of air [bench-top (BT) experiments] or in the absence of air [glove-box (GB) experiments]; and 2) determine the uranium micron-scale solid phase and associated valence state resulting from the experimental conditions. The investigation showed minimal overall changes in Fe mineralogy as a result of sediment exposure to acid solutions, but an increase in the highly reactive nano Fe fraction of the sediment. Greater uranium partitioning was observed at pH = 5 than at pH = 2 and 8. The mu-XRF inspections and XANES analyses confirmed that high concentration areas on sediment surfaces were rich in U(VI) in the BT experiments, and both U(IV) and U(VI) in the GB experiments. The laser spectroscopy data showed that uranyl phosphates {e.g., metaautunite [Ca(UO2)(2)(PO4)(2)center dot 10-12H(2)O] and phosphuranylite [KCa(H3O)(3)(UO2)(7)(PO4)(4)O-4 center dot 8H(2)O]} may have formed in the BT experiments. In the GB experiments, in addition to U(IV) phases, U(VI) phases may have also formed similar to those that are naturally present in the sediment, but at higher concentrations. The results provide insights about U(VI) mobility beneath acidic waste disposal sites. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Gartman, Brandy N.; Qafoku, Nikolla P.; Szecsody, James E.; Kukkadapu, Ravi K.; Wang, Zheming; Wellman, Dawn M.; Truex, Michael J.] Pacific NW Natl Lab, Richland, WA 99354 USA.
[Gartman, Brandy N.] ViZn Energy Syst Inc, Columbia Falls, MT 59912 USA.
RP Qafoku, NP (reprint author), Pacific NW Natl Lab, POB 999,MSIN P7-54, Richland, WA 99354 USA.
EM Nik.Qafoku@pnnl.gov
RI Wang, Zheming/E-8244-2010;
OI Wang, Zheming/0000-0002-1986-4357; Qafoku, Nikolla
P./0000-0002-3258-5379
FU U.S. Department of Energy (DOE) Office of Environmental Management;
Department of Energy (DOE) [DE-AC05-76RL01830]; U.S. DOE Office of
Biological and Environmental Research; U.S. DOE Office of Science,
Office of Basic Energy Sciences [DE-AC02-06CH11357]; Richland Operations
Office
FX Funding for this work was provided by the U.S. Department of Energy
(DOE) Office of Environmental Management and Richland Operations Office.
The Pacific Northwest National Laboratory (PNNL) is operated by Battelle
Memorial Institute for the Department of Energy (DOE) under Contract
DE-AC05-76RL01830. The research presented in the paper was conducted in
part in the Environmental Molecular Sciences Laboratory, a national
scientific user facility sponsored by the U.S. DOE Office of Biological
and Environmental Research and located at PNNL in Richland, WA, USA. Use
of the Advanced Photon Source (APS) at the Argonne National Laboratory
(ANL) is supported by the U.S. DOE Office of Science, Office of Basic
Energy Sciences under contract DE-AC02-06CH11357. The authors appreciate
the support and help of Dr. Steve Heald at APS/ANL during collection of
the mu-XRF and XANES data.
NR 61
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U1 4
U2 17
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0883-2927
J9 APPL GEOCHEM
JI Appl. Geochem.
PD DEC
PY 2015
VL 63
BP 1
EP 9
DI 10.1016/j.apgeochem.2015.07.010
PG 9
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA CY2DU
UT WOS:000366219800001
ER
PT J
AU Izbicki, JA
Wright, MT
Seymour, WA
McCleskey, RB
Fram, MS
Belitz, K
Esser, BK
AF Izbicki, John A.
Wright, Michael T.
Seymour, Whitney A.
McCleskey, R. Blaine
Fram, Miranda S.
Belitz, Kenneth
Esser, Bradley K.
TI Cr(VI) occurrence and geochemistry in water from public-supply wells in
California
SO APPLIED GEOCHEMISTRY
LA English
DT Article
DE Groundwater; Chromium; Trace elements; Drinking water; California
ID WESTERN MOJAVE DESERT; IN-GROUND WATER; HEXAVALENT CHROMIUM;
NOBLE-GASES; ARTIFICIAL RECHARGE; SOUTHERN CALIFORNIA; SERPENTINE SOILS;
DRINKING-WATER; NATURAL-WATERS; AQUIFER
AB Hexavalent chromium, Cr(VI), in 918 wells sampled throughout California between 2004 and 2012 by the Groundwater Ambient Monitoring and Assessment-Priority Basin Project (GAMA-PBP) ranged from less than the study reporting limit of 1 microgram per liter (mg/L) to 32 mg/L. Statewide, Cr(VI) was reported in 31 percent of wells and equaled or exceeded the recently established (2014) California Maximum Contaminant Level (MCL) for Cr(VI) of 10 mg/L in 4 percent of wells. Cr(VI) data collected for regulatory purposes overestimated Cr(VI) occurrence compared to spatially-distributed GAMA-PBP data. Ninety percent of chromium was present as Cr(VI), which was detected more frequently and at higher concentrations in alkaline (pH >= 8), oxic water; and more frequently in agricultural and urban land uses compared to native land uses. Chemical, isotopic (tritium and carbon-14), and noble-gas data show high Cr(VI) in water from wells in alluvial aquifers in the southern California deserts result from long groundwater-residence times and geochemical reactions such as silicate weathering that increase pH, while oxic conditions persist. High Cr(VI) in water from wells in alluvial aquifers along the west-side of the Central Valley results from high-chromium in source rock eroded to form those aquifers, and areal recharge processes (including irrigation return) that can mobilize chromium from the unsaturated zone. Cr(VI) co-occurred with oxyanions having similar chemistry, including vanadium, selenium, and uranium. Cr(VI) was positively correlated with nitrate, consistent with increased concentrations in areas of agricultural land use and mobilization of chromium from the unsaturated zone by irrigation return. Published by Elsevier Ltd.
C1 [Izbicki, John A.; Wright, Michael T.; Seymour, Whitney A.; McCleskey, R. Blaine; Fram, Miranda S.; Belitz, Kenneth] US Geol Survey, Reston, VA 20192 USA.
[Esser, Bradley K.] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Izbicki, JA (reprint author), US Geol Survey, Reston, VA 20192 USA.
EM jaizbick@usgs.gov
OI Fram, Miranda/0000-0002-6337-059X; McCleskey,
Richard/0000-0002-2521-8052
FU California State Water Resources Control Board Groundwater Ambient
Monitoring and Assessment-Priority Basin Project (GAMA-PBP)
FX This study was funded as part of the California State Water Resources
Control Board Groundwater Ambient Monitoring and Assessment-Priority
Basin Project (GAMA-PBP). The authors thank the large number of
participating well owners across the state that provided access to wells
for sample collection.
NR 89
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Z9 2
U1 7
U2 27
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0883-2927
J9 APPL GEOCHEM
JI Appl. Geochem.
PD DEC
PY 2015
VL 63
BP 203
EP 217
DI 10.1016/j.apgeochem.2015.08.007
PG 15
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA CY2DU
UT WOS:000366219800017
ER
PT J
AU Gallegos, TJ
Campbell, KM
Zielinski, RA
Reimus, PW
Clay, JT
Janot, N
Bargar, JR
Benzel, WM
AF Gallegos, T. J.
Campbell, K. M.
Zielinski, R. A.
Reimus, P. W.
Clay, J. T.
Janot, N.
Bargar, John R.
Benzel, William M.
TI Persistent U(IV) and U(VI) following in-situ recovery (ISR) mining of a
sandstone uranium deposit, Wyoming, USA
SO APPLIED GEOCHEMISTRY
LA English
DT Article
DE Uranium; In-situ recovery; ISR; Uranium mining; Sandstone-hosted uranium
deposit; Groundwater restoration
ID RAY-ABSORPTION SPECTROSCOPY; MACKINAWITE; ADSORPTION; MINE;
FERRIHYDRITE; REDUCTION; SORPTION; MODEL
AB Drill-core samples from a sandstone-hosted uranium (U) deposit in Wyoming were characterized to determine the abundance and distribution of uranium following in-situ recovery (ISR) mining with oxygen-and carbon dioxide-enriched water. Concentrations of uranium, collected from ten depth intervals, ranged from 5 to 1920 ppm. A composite sample contained 750 ppm uranium with an average oxidation state of 54% U(VI) and 46% U(IV). Scanning electron microscopy (SEM) indicated rare high uranium (similar to 1000 ppm U) in spatial association with P/Ca and Si/O attributed to relict uranium minerals, possibly coffinite, uraninite, and autunite, trapped within low permeability layers bypassed during ISR mining. Fission track analysis revealed lower but still elevated concentrations of U in the clay/silica matrix and organic matter (several 10 s ppm) and yet higher concentrations associated with Fe-rich/S-poor sites, likely iron oxides, on altered chlorite or euhedral pyrite surfaces (but not on framboidal pyrite). Organic C (<1.62%), total S (<0.31%), and P (<0.03%) were in low abundance relative to the overall bulk composition. Microbial community analysis showed a diverse group of bacteria present with a wide range of putative metabolisms, and provides evidence for a variety of redox microenvironments coexisting in core samples. Although the uranium minerals persisting in low permeability areas in association with organic carbon were less affected by oxidizing solutions during mining, the likely sequestration of uranium within labile iron oxides following mining and sensitivity to changes in redox conditions requires careful attention during groundwater restoration. Published by Elsevier Ltd.
C1 [Gallegos, T. J.] US Geol Survey, Reston, VA 20192 USA.
[Campbell, K. M.] US Geol Survey, Boulder, CO 80303 USA.
[Zielinski, R. A.; Benzel, William M.] US Geol Survey, Denver Fed Ctr, Denver, CO 80225 USA.
[Reimus, P. W.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Clay, J. T.] Cameco Resources, Casper, WY 82601 USA.
[Janot, N.; Bargar, John R.] Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA.
RP Gallegos, TJ (reprint author), US Geol Survey, 12201 Sunrise Valley Dr,Mail Stop 956, Reston, VA 20192 USA.
EM tgallegos@usgs.gov; kcampbell@usgs.gov; rzielinski@usgs.gov;
preimus@lanl.gov; James_Clay@cameco.com; noemie.janot@univ-lorraine.fr;
bargar@slac.stanford.edu; wbenzel@usgs.gov
FU Energy Resources Program; Toxic Substance Hydrology Program; National
Research Program at the U.S. Geological Survey; DOE Office of Biological
and Environmental Research, Subsurface Biogeochemistry Research (SBR)
program via the SLAC SFA program [DE-AC02-76SF00515]
FX Financial support for this research was provided by Energy Resources
Program, the Toxic Substance Hydrology Program, and the National
Research Program at the U.S. Geological Survey. Thanks to collaborators
at Cameco/Power Resources for providing access to drill core and water
quality information especially Larry Reimann, Christopher Stanbury and
Katelynd Faler. Whole rock digests and XRD were performed at the USGS
Crustal Geochemical Labs in Denver, CO. Thanks to Heather Lowers for
assistance with SEM and EMP analyses. X-ray absorption was performed at
the Stanford Synchrotron Radiation Lightsource, a facility operated by
the Department of Energy Office of Basic Energy Sciences. Funding for
Janot and Bargar was provided by the DOE Office of Biological and
Environmental Research, Subsurface Biogeochemistry Research (SBR)
program via the SLAC SFA program, under contract DE-AC02-76SF00515. Any
use of trade, firm, or product names was for descriptive purposes only
and does not imply endorsement by the U.S. Government. Neither the
United States Government nor any agency thereof, nor any of its
employees, make any warranty, expressed or implied, or assume any legal
liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process disclosed
in this article, or represent that its use would not infringe privately
owned rights.
NR 43
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U1 9
U2 25
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0883-2927
J9 APPL GEOCHEM
JI Appl. Geochem.
PD DEC
PY 2015
VL 63
BP 222
EP 234
DI 10.1016/j.apgeochem.2015.08.017
PG 13
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA CY2DU
UT WOS:000366219800019
ER
PT J
AU Kessler, R
Marriner, J
Childress, M
Covarrubias, R
D'Andrea, CB
Finley, DA
Fischer, J
Foley, RJ
Goldstein, D
Gupta, RR
Kuehn, K
Marcha, M
Nichol, RC
Papadopoulos, A
Sako, M
Scolnic, D
Smith, M
Sullivan, M
Wester, W
Yuan, F
Abbott, T
Abdalla, FB
Allam, S
Benoit-Levy, A
Bernstein, GM
Bertin, E
Brooks, D
Rosell, AC
Kind, MC
Castander, FJ
Crocce, M
Da Costa, LN
Desai, S
Diehl, HT
Eifler, TF
Neto, AF
Flaugher, B
Frieman, J
Gerdes, DW
Gruen, D
Gruendl, RA
Honscheid, K
James, DJ
Kuropatkin, N
Li, TS
Maia, MAG
Marshall, JL
Martini, P
Miller, CJ
Miquel, R
Nord, B
Ogando, R
Plazas, AA
Reil, K
Romer, AK
Roodman, A
Sanchez, E
Sevilla-Noarbe, I
Smith, RC
Soares-Santos, M
Sobreira, F
Tarle, G
Thaler, J
Thomas, RC
Tucker, D
Walker, AR
AF Kessler, R.
Marriner, J.
Childress, M.
Covarrubias, R.
D'Andrea, C. B.
Finley, D. A.
Fischer, J.
Foley, R. J.
Goldstein, D.
Gupta, R. R.
Kuehn, K.
Marcha, M.
Nichol, R. C.
Papadopoulos, A.
Sako, M.
Scolnic, D.
Smith, M.
Sullivan, M.
Wester, W.
Yuan, F.
Abbott, T.
Abdalla, F. B.
Allam, S.
Benoit-Levy, A.
Bernstein, G. M.
Bertin, E.
Brooks, D.
Rosell, A. Carnero
Kind, M. Carrasco
Castander, F. J.
Crocce, M.
Da Costa, L. N.
Desai, S.
Diehl, H. T.
Eifler, T. F.
Neto, A. Fausti
Flaugher, B.
Frieman, J.
Gerdes, D. W.
Gruen, D.
Gruendl, R. A.
Honscheid, K.
James, D. J.
Kuropatkin, N.
Li, T. S.
Maia, M. A. G.
Marshall, J. L.
Martini, P.
Miller, C. J.
Miquel, R.
Nord, B.
Ogando, R.
Plazas, A. A.
Reil, K.
Romer, A. K.
Roodman, A.
Sanchez, E.
Sevilla-Noarbe, I.
Smith, R. C.
Soares-Santos, M.
Sobreira, F.
Tarle, G.
Thaler, J.
Thomas, R. C.
Tucker, D.
Walker, A. R.
CA DES Collaboration
TI THE DIFFERENCE IMAGING PIPELINE FOR THE TRANSIENT SEARCH IN THE DARK
ENERGY SURVEY
SO ASTRONOMICAL JOURNAL
LA English
DT Article
DE supernovae: general; techniques: image processing
ID SUPERNOVA LEGACY SURVEY; IA SUPERNOVAE; COSMOLOGICAL CONSTRAINTS;
PHOTOMETRIC REDSHIFTS; LIGHT CURVES; CALIBRATION; SEXTRACTOR; ALGORITHM;
SOFTWARE; CATALOG
AB We describe the operation and performance of the difference imaging pipeline (DiffImg) used to detect transients in deep images from the Dark Energy Survey Supernova program (DES-SN) in its first observing season from 2013 August through 2014 February. DES-SN is a search for transients in which ten 3 deg(2) fields are repeatedly observed in the g, r, i, z passbands with a cadence of about 1 week. The observing strategy has been optimized to measure high-quality light curves and redshifts for thousands of Type Ia supernovae (SNe Ia) with the goal of measuring dark energy parameters. The essential DiffImg functions are to align each search image to a deep reference image, do a pixel-by-pixel subtraction, and then examine the subtracted image for significant positive detections of point-source objects. The vast majority of detections are subtraction artifacts, but after selection requirements and image filtering with an automated scanning program, there are similar to 130 detections per deg(2) per observation in each band, of which only similar to 25% are artifacts. Of the similar to 7500 transients discovered by DES-SN in its first observing season, each requiring a detection on at least two separate nights, Monte Carlo (MC) simulations predict that 27% are expected to be SNe Ia or core-collapse SNe. Another similar to 30% of the transients are artifacts in which a small number of observations satisfy the selection criteria for a single-epoch detection. Spectroscopic analysis shows that most of the remaining transients are AGNs and variable stars. Fake SNe Ia are overlaid onto the images to rigorously evaluate detection efficiencies and to understand the DiffImg performance. The DiffImg efficiency measured with fake SNe agrees well with expectations from a MC simulation that uses analytical calculations of the fluxes and their uncertainties. In our 8 "shallow" fields with single-epoch 50% completeness depth similar to 23.5, the SN Ia efficiency falls to 1/2 at redshift z approximate to 0.7; in our 2 "deep" fields with mag-depth similar to 24.5, the efficiency falls to 1/2 at z approximate to 1.1. A remaining performance issue is that the measured fluxes have additional scatter (beyond Poisson fluctuations) that increases with the host galaxy surface brightness at the transient location. This bright-galaxy issue has minimal impact on the SNe Ia program, but it may lower the efficiency for finding fainter transients on bright galaxies.
C1 [Kessler, R.; Scolnic, D.; Frieman, J.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Kessler, R.; Frieman, J.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Marriner, J.; Finley, D. A.; Wester, W.; Allam, S.; Diehl, H. T.; Flaugher, B.; Frieman, J.; Kuropatkin, N.; Nord, B.; Soares-Santos, M.; Sobreira, F.; Tucker, D.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Childress, M.; Yuan, F.] Australian Natl Univ, ARC Ctr Excellence All sky Astrophys CAASTRO, Canberra, ACT 2611, Australia.
[Childress, M.; Yuan, F.] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2601, Australia.
[Covarrubias, R.; Kind, M. Carrasco; Gruendl, R. A.] Univ Illinois, Natl Ctr Supercomp Applicat, Urbana, IL 61801 USA.
[D'Andrea, C. B.; Nichol, R. C.; Papadopoulos, A.] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England.
[Fischer, J.; Sako, M.; Bernstein, G. M.; Eifler, T. F.] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA.
[Foley, R. J.; Kind, M. Carrasco; Gruendl, R. A.; Sevilla-Noarbe, I.] Univ Illinois, Dept Astron, Urbana, IL 61801 USA.
[Foley, R. J.; Thaler, J.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
[Goldstein, D.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Goldstein, D.; Thomas, R. C.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Gupta, R. R.] Argonne Natl Lab, Lemont, IL 60439 USA.
[Kuehn, K.] Australian Astron Observ, N Ryde, NSW 2113, Australia.
[Marcha, M.; Abdalla, F. B.; Benoit-Levy, A.; Brooks, D.] Univ London Univ Coll, Dept Phys & Astron, London WC1E 6BT, England.
[Smith, M.; Sullivan, M.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England.
[Abbott, T.; James, D. J.; Smith, R. C.; Walker, A. R.] Natl Opt Astron Observ, Cerro Tololo Inter Amer Observ, La Serena, Chile.
[Abdalla, F. B.] Rhodes Univ, Dept Phys & Elect, ZA-6140 Grahamstown, South Africa.
[Bertin, E.] Univ Paris 06, Sorbonne Univ, Inst Astrophys Paris, UMR 7095, F-75014 Paris, France.
[Bertin, E.] Inst Astrophys, CNRS, UMR 7095, F-75014 Paris, France.
[Rosell, A. Carnero; Da Costa, L. N.; Neto, A. Fausti; Maia, M. A. G.; Ogando, R.; Sobreira, F.] Lab Interinstituc E Astron LIneA, BR-20921400 Rio De Janeiro, RJ, Brazil.
[Rosell, A. Carnero; Da Costa, L. N.; Maia, M. A. G.; Ogando, R.] Observatorio Nacl, BR-20921400 Rio De Janeiro, RJ, Brazil.
[Castander, F. J.; Crocce, M.] IEEC CSIC, Fac Ciencias, Inst Ciencies Espai, E-08193 Barcelona, Spain.
[Desai, S.] Univ Munich, Dept Phys, D-81679 Munich, Germany.
[Desai, S.] Excellence Cluster Universe, D-85748 Garching, Germany.
[Eifler, T. F.; Plazas, A. A.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Gerdes, D. W.; Miller, C. J.; Tarle, G.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Gruen, D.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Gruen, D.] Univ Munich, Univ Sternwarte, Fak Phys, D-81679 Munich, Germany.
[Honscheid, K.; Martini, P.] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Honscheid, K.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Li, T. S.; Marshall, J. L.] Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamenta, College Stn, TX 77843 USA.
[Li, T. S.; Marshall, J. L.] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA.
[Martini, P.] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA.
[Miller, C. J.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
[Miquel, R.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain.
[Reil, K.; Roodman, A.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Romer, A. K.] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England.
[Roodman, A.] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
[Sanchez, E.; Sevilla-Noarbe, I.] CIEMAT, E-28040 Madrid, Spain.
RP Kessler, R (reprint author), Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
EM kessler@kicp.uchicago.edu
RI Ogando, Ricardo/A-1747-2010; Sanchez, Eusebio/H-5228-2015; Sobreira,
Flavia/F-4168-2015;
OI Ogando, Ricardo/0000-0003-2120-1154; Sanchez,
Eusebio/0000-0002-9646-8198; Sobreira, Flavia/0000-0002-7822-0658;
Carrasco Kind, Matias/0000-0002-4802-3194; Goldstein,
Daniel/0000-0003-3461-8661; Abdalla, Filipe/0000-0003-2063-4345;
Sullivan, Mark/0000-0001-9053-4820; Tucker, Douglas/0000-0001-7211-5729
FU National Energy Research Scientific Computing Center (NERSC); Office of
Science of the U.S. Department of Energy [DE-AC02-05CH11231]; Australian
Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO)
[CE110001020]; U.S. Department of Energy; U.S. National Science
Foundation; Ministry of Science and Education of Spain; Science and
Technology Facilities Council of the United Kingdom; Higher Education
Funding Council for England; National Center for Supercomputing
Applications at the University of Illinois at Urbana-Champaign; Kavli
Institute of Cosmological Physics at the University of Chicago; Center
for Cosmology and Astro-Particle Physics at the Ohio State University;
Mitchell Institute for Fundamental Physics and Astronomy at Texas AM
University; Financiadora de Estudos e Projetos; Fundacao Carlos Chagas
Filho de Amparo a Pesquisa do Estado do Rio de Janeiro; Conselho
Nacional de Desenvolvimento Cientifico e Tecnologico; Ministerio da
Ciencia, Tecnologia e Inovacao; Deutsche Forschungsgemeinschaft;
Collaborating Institutions in the Dark Energy Survey; National Science
Foundation [AST-1138766]; MINECO [AYA2012-39559, ESP2013-48274,
FPA2013-47986]; Centro de Excelencia Severo Ochoa [SEV-2012-0234];
European Union
FX This research used resources of the National Energy Research Scientific
Computing Center (NERSC), a DOE Office of Science User Facility
supported by the Office of Science of the U.S. Department of Energy
under Contract No. DE-AC02-05CH11231. Part of this research was
conducted by the Australian Research Council Centre of Excellence for
All-sky Astrophysics (CAASTRO), through project number CE110001020.
Funding for the DES Projects has been provided by the U.S. Department of
Energy, the U.S. National Science Foundation, the Ministry of Science
and Education of Spain, the Science and Technology Facilities Council of
the United Kingdom, the Higher Education Funding Council for England,
the National Center for Supercomputing Applications at the University of
Illinois at Urbana-Champaign, the Kavli Institute of Cosmological
Physics at the University of Chicago, the Center for Cosmology and
Astro-Particle Physics at the Ohio State University, the Mitchell
Institute for Fundamental Physics and Astronomy at Texas A&M University,
Financiadora de Estudos e Projetos, Fundacao Carlos Chagas Filho de
Amparo a Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de
Desenvolvimento Cientifico e Tecnologico and the Ministerio da Ciencia,
Tecnologia e Inovacao, the Deutsche Forschungsgemeinschaft and the
Collaborating Institutions in the Dark Energy Survey. The DES data
management system is supported by the National Science Foundation under
Grant Number AST-1138766. The DES participants from Spanish institutions
are partially supported by MINECO under grants AYA2012-39559,
ESP2013-48274, FPA2013-47986, and Centro de Excelencia Severo Ochoa
SEV-2012-0234, some of which include ERDF funds from the European Union.
The Collaborating Institutions are Argonne National Laboratory, the
University of California at Santa Cruz, the University of Cambridge,
Centro de Investigaciones Energeticas, Medioambientales y
Tecnologicas-Madrid, the University of Chicago, University College
London, the DES-Brazil Consortium, the University of Edinburgh, the
Eidgenossische Technische Hochschule (ETH) Zurich, Fermi National
Accelerator Laboratory, the University of Illinois at Urbana-Champaign,
the Institut de Ciencies de l'Espai (IEEC/CSIC), the Institut de Fisica
d'Altes Energies, Lawrence Berkeley National Laboratory, the
Ludwig-Maximilians Universitat Munchen and theassociated Excellence
Cluster Universe, the University of Michigan, the National Optical
Astronomy Observatory, the University of Nottingham, The Ohio State
University, the University of Pennsylvania, the University of
Portsmouth, SLAC National Accelerator Laboratory, Stanford University,
the University of Sussex, and Texas A&M University. We are grateful for
the extraordinary contributions of our CTIO colleagues and the DECam
Construction, Commissioning and Science Verification teams in achieving
the excellent instrument and telescope conditions that have made this
work possible. The success of this project also relies critically on the
expertise and dedication of the DES Data Management group.
NR 47
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PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-6256
EI 1538-3881
J9 ASTRON J
JI Astron. J.
PD DEC
PY 2015
VL 150
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AR 172
DI 10.1088/0004-6256/150/6/172
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA CY7KZ
UT WOS:000366588600007
ER
PT J
AU Myers, AD
Palanque-Delabrouille, N
Prakash, A
Paris, I
Yeche, C
Dawson, KS
Bovy, J
Lang, D
Schlegel, DJ
Newman, JA
Petitjean, P
Kneib, JP
Laurent, P
Percival, WJ
Ross, AJ
Seo, HJ
Tinker, JL
Armengaud, E
Brownstein, J
Burtin, E
Cai, Z
Comparat, J
Kasliwal, M
Kulkarni, SR
Laher, R
Levitan, D
McBride, CK
McGreer, ID
Miller, AA
Nugent, P
Ofek, E
Rossi, G
Ruan, J
Schneider, DP
Sesar, B
Streblyanska, F
Surace, J
AF Myers, Adam D.
Palanque-Delabrouille, Nathalie
Prakash, Abhishek
Paris, Isabelle
Yeche, Christophe
Dawson, Kyle S.
Bovy, Jo
Lang, Dustin
Schlegel, David J.
Newman, Jeffrey A.
Petitjean, Patrick
Kneib, Jean-Paul
Laurent, Pierre
Percival, Will J.
Ross, Ashley J.
Seo, Hee-Jong
Tinker, Jeremy L.
Armengaud, Eric
Brownstein, Joel
Burtin, Etienne
Cai, Zheng
Comparat, Johan
Kasliwal, Mansi
Kulkarni, Shrinivas R.
Laher, Russ
Levitan, David
McBride, Cameron K.
McGreer, Ian D.
Miller, Adam A.
Nugent, Peter
Ofek, Eran
Rossi, Graziano
Ruan, John
Schneider, Donald P.
Sesar, Branimir
Streblyanska, Fklina
Surace, Jason
TI THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: QUASAR
TARGET SELECTION
SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
LA English
DT Article
DE catalogs; cosmology: observations; galaxies: distances and redshifts;
galaxies: photometry; methods: data analysis; quasars: general
ID DIGITAL-SKY-SURVEY; ACTIVE GALACTIC NUCLEI; INTERMEDIATE-REDSHIFT
QUASARS; SURVEY PHOTOMETRIC SYSTEM; FAINT BLUE OBJECTS; BLACK-HOLE
MASSES; 7TH DATA RELEASE; LY-ALPHA FOREST; LUMINOSITY FUNCTION; STELLAR
OBJECTS
AB As part of the Sloan Digital Sky Survey (SDSS) IV the extended Baryon Oscillation Spectroscopic Survey (eBOSS) will improve measurements of the cosmological distance scale by applying the Baryon Acoustic Oscillation (BAO) method to quasar samples. eBOSS will adopt two approaches to target quasars over 7500 deg(2). First, a "CORE" quasar sample will combine the optical selection in ugriz using a likelihood-based routine called XDQSOz, with a mid-IR-optical color cut. eBOSS CORE selection (to g < 22 or r < 22) should return similar to 70 deg(-2) quasars at redshifts 0.9 < z < 2.2 and similar to 7 deg(-2)z > 2.1 quasars. Second, a selection based on variability in multi-epoch imaging from the Palomar Transient Factory should recover an additional similar to 3-4 deg(-2)z > 2.1 quasars to g < 22.5 A linear model of how imaging systematics affect target density recovers the angular distribution of eBOSS CORE quasars over 96.7% (76.7%) of the SDSS north (south) Galactic Cap area. The eBOSS CORE quasar sample should thus be sufficiently dense and homogeneous over 0.9. <. z. <. 2.2 to yield the first few-percent-level BAO constraint near <(z)over bar> similar to 1.5. eBOSS quasars at z > 2.1 will be used to improve BAO measurements in the Ly alpha Forest. Beyond its key cosmological goals, eBOSS should be the next-generation quasar survey, comprising > 500,000 new quasars and >500,000 uniformly selected spectroscopically confirmed 0.9 < z < 2.2 quasars. At the conclusion of eBOSS, the SDSS will have provided unique spectra for more than 800,000 quasars.
C1 [Myers, Adam D.] Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA.
[Palanque-Delabrouille, Nathalie; Yeche, Christophe; Laurent, Pierre; Armengaud, Eric; Burtin, Etienne] CEA, Irfu SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Prakash, Abhishek; Newman, Jeffrey A.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
[Prakash, Abhishek; Newman, Jeffrey A.] Univ Pittsburgh, PITT PACC, Pittsburgh, PA 15260 USA.
[Paris, Isabelle] Osserv Astron Trieste, INAF, I-34131 Trieste, IT, Italy.
[Dawson, Kyle S.; Brownstein, Joel] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA.
[Bovy, Jo] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H4, Canada.
[Lang, Dustin] Carnegie Mellon Univ, Bruce & Astrid McWilliams Ctr Cosmol, Dept Phys, Pittsburgh, PA 15213 USA.
[Schlegel, David J.; Nugent, Peter] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Petitjean, Patrick] UPMC, CNRS, Inst Astrophys Paris, UMR 7095, F-75014 Paris, France.
[Kneib, Jean-Paul] Ecole Polytech Fed Lausanne, Observ Sauverny, Astrophys Lab, CH-1290 Versoix, Switzerland.
[Kneib, Jean-Paul] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.
[Percival, Will J.; Ross, Ashley J.] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England.
[Ross, Ashley J.] Ohio State Univ, Ctr Cosmol & AstroParticle Phys, Columbus, OH 43210 USA.
[Seo, Hee-Jong] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA.
[Tinker, Jeremy L.] NYU, Ctr Cosmol & Particle Phys, Dept Phys, New York, NY 10003 USA.
[Cai, Zheng; McGreer, Ian D.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
[Comparat, Johan] Univ Autonoma Madrid, CSIC, Inst Fis Teor, E-28049 Madrid, Spain.
[Kasliwal, Mansi] Carnegie Inst Sci, Observ, Pasadena, CA 91101 USA.
[Kulkarni, Shrinivas R.; Miller, Adam A.] CALTECH, Pasadena, CA 91125 USA.
[Laher, Russ; Surace, Jason] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA.
[Levitan, David] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA.
[McBride, Cameron K.] Harvard Univ, Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Miller, Adam A.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Nugent, Peter] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Ofek, Eran] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel.
[Rossi, Graziano] Sejong Univ, Dept Astron & Space Sci, Seoul 143747, South Korea.
[Ruan, John] Univ Washington, Dept Astron, Seattle, WA 98195 USA.
[Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA USA.
[Schneider, Donald P.] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA.
[Sesar, Branimir] Max Planck Inst Astron, D-69117 Heidelberg, Germany.
[Streblyanska, Fklina] IAC, E-38200 San Cristobal la Laguna, Tenerife, Spain.
[Streblyanska, Fklina] Univ La Laguna, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain.
RP Myers, AD (reprint author), Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA.
EM amyers14@uwyo.edu
RI EPFL, Physics/O-6514-2016
FU Alexander von Humboldt Foundation at the Max-Planck-Institut fur
Astronomie; NASA-ADAP awards [NNX12AI49G, NNX12AE38G]; NSF [1211112,
1515404]; ERC; National Aeronautics and Space Administration; Alfred P.
Sloan Foundation; National Science Foundation; U.S. Department of Energy
Office of Science; Center for High-Performance Computing at the
University of Utah
FX We are grateful for insightful discussions about quasar selection
statistics with Joe Hennawi, David Hogg, and Gordon Richards. A.D.M.
acknowledges a generous research fellowship from the Alexander von
Humboldt Foundation at the Max-Planck-Institut fur Astronomie and was
supported in part by NASA-ADAP awards NNX12AI49G and NNX12AE38G and by
NSF awards 1211112 and 1515404. J.P.K. acknowledges support from the ERC
advanced grant LIDA.; This paper includes targets derived from the
images of the Wide-Field Infrared Survey Explorer, which is a joint
project of the University of California, Los Angeles, and the Jet
Propulsion Laboratory/California Institute of Technology, funded by the
National Aeronautics and Space Administration.; This paper represents an
effort by both the SDSS-III and SDSS-IV collaborations. Funding for
SDSS-III was provided by the Alfred P. Sloan Foundation, the
Participating Institutions, the National Science Foundation, and the
U.S. Department of Energy Office of Science. Funding for the Sloan
Digital Sky Survey IV has been provided by the Alfred P. Sloan
Foundation, the U.S. Department of Energy Office of Science, and the
Participating Institutions. SDSS-IV acknowledges support and resources
from the Center for High-Performance Computing at the University of
Utah. The SDSS web site is www.sdss.org.
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PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0067-0049
EI 1538-4365
J9 ASTROPHYS J SUPPL S
JI Astrophys. J. Suppl. Ser.
PD DEC
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VL 221
IS 2
AR 27
DI 10.1088/0067-0049/221/2/27
PG 24
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SC Astronomy & Astrophysics
GA CY7WV
UT WOS:000366620900005
ER
PT J
AU Herndon, EM
Yang, ZM
Bargar, J
Janot, N
Regier, T
Graham, D
Wullschleger, S
Gu, BH
Liang, LY
AF Herndon, Elizabeth M.
Yang, Ziming
Bargar, John
Janot, Noemie
Regier, Tom Z.
Graham, David E.
Wullschleger, Stan D.
Gu, Baohua
Liang, Liyuan
TI Geochemical drivers of organic matter decomposition in arctic tundra
soils
SO BIOGEOCHEMISTRY
LA English
DT Article
DE Iron biogeochemistry; Tundra soil; Active layer; Soil organic matter;
Methane
ID NEAR-SURFACE PERMAFROST; IRON-OXIDE; CARBON STORAGE; COASTAL TUNDRA;
ACTIVE LAYER; NORTHWEST-TERRITORIES; FE(III) OXIDE; ALASKA; OXIDATION;
REDUCTION
AB Climate change is warming tundra ecosystems in the Arctic, resulting in the decomposition of previously-frozen soil organic matter (SOM) and release of carbon (C) to the atmosphere; however, the processes that control SOM decomposition and C emissions remain highly uncertain. In this study, we evaluate geochemical factors that influence microbial production of carbon dioxide (CO2) and methane (CH4) in the seasonally-thawed active layer of interstitial polygonal tundra near Barrow, Alaska. We report spatial and seasonal patterns of dissolved gases in relation to the geochemical properties of Fe and organic C in soil and soil solution, as determined using spectroscopic and chromatographic techniques. The chemical composition of soil water collected during the annual thaw season varied significantly with depth. Soil water in the middle of the active layer contained abundant Fe(III), and aromatic-C and low-molecular-weight organic acids derived from SOM decomposition. At these depths, CH4 was positively correlated with the ratio of Fe(III) to total Fe in waterlogged transitional and low-centered polygons but negatively correlated in the drier flat- and high-centered polygons. These observations contradict the expectation that CH4 would be uniformly low where Fe(III) was high due to inhibition of methanogenesis by Fe(III)-reduction reactions. Our results suggest that vertically-stratified Fe redox reactions influence respiration/fermentation of SOM and production of substrates (e.g., low-molecular-weight organic acids) for methanogenesis, but that these effects vary with soil moisture. We infer that geochemical differences induced by water saturation dictate microbial products of SOM decomposition, and Fe geochemistry is an important factor regulating methanogenesis in anoxic tundra soils.
C1 [Herndon, Elizabeth M.; Yang, Ziming; Wullschleger, Stan D.; Gu, Baohua; Liang, Liyuan] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Bargar, John; Janot, Noemie] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA.
[Regier, Tom Z.] Canadian Light Source, Saskatoon, SK S7N 2V3, Canada.
[Graham, David E.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
[Janot, Noemie] Univ Lorraine, CNRS, UMR 7360, Lab Interdisciplinaire Environm Continentaux, F-54500 Vandoeuvre Les Nancy, France.
RP Liang, LY (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008,MS-6036, Oak Ridge, TN 37831 USA.
EM eherndo1@kent.edu; liangl@ornl.gov
RI Gu, Baohua/B-9511-2012; Graham, David/F-8578-2010; Wullschleger,
Stan/B-8297-2012
OI Gu, Baohua/0000-0002-7299-2956; Graham, David/0000-0001-8968-7344;
Wullschleger, Stan/0000-0002-9869-0446
FU DOE [DE-AC05-00OR22725]; U.S. DOE, Office of Science, Office of Basic
Energy Sciences [DE-AC02-76SF00515]; Canadian Foundation for Innovation,
Natural Sciences and Engineering Research Council of Canada; University
of Saskatchewan; Government of Saskatchewan, Western Economic
Diversification Canada; National Research Council Canada; Canadian
Institutes of Health Research; US Department of Energy (DOE) Office of
Biological and Environmental Research
FX The authors would like to thank Kenneth Lowe for core sample collection,
and Taniya Roy Chowdhury, Xiangping Yin, Benjamin Mann, Tonia Mehlhorn,
Sharon Bone, Jay Dynes, Margaret Murphy, and Henry Gong for technical
assistance and chemical analyses. All data are available in the
supporting information for this manuscript and in an online data
repository (NGEE-Arctic Data Portal). The Next Generation Ecosystem
Experiments (NGEE-Arctic) project and the SLAC Science Focus Area (SFA)
program are supported by the US Department of Energy (DOE) Office of
Biological and Environmental Research. Oak Ridge National Laboratory is
managed by UT-Battelle LLC for DOE under contract DE-AC05-00OR22725.
Portions of this work were performed at the Stanford Synchrotron
Radiation Lightsource (SSRL) and the Canadian Light Source (CLS). SSRL
(a directorate of SLAC) is supported by the U.S. DOE, Office of Science,
Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515.
The CLS is supported by the Canadian Foundation for Innovation, Natural
Sciences and Engineering Research Council of Canada, the University of
Saskatchewan, the Government of Saskatchewan, Western Economic
Diversification Canada, the National Research Council Canada, and the
Canadian Institutes of Health Research. Logistical support while working
on the Barrow Environmental Observatory (BEO) was provided by Umiaq,
LLC.
NR 73
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U1 18
U2 68
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0168-2563
EI 1573-515X
J9 BIOGEOCHEMISTRY
JI Biogeochemistry
PD DEC
PY 2015
VL 126
IS 3
BP 397
EP 414
DI 10.1007/s10533-015-0165-5
PG 18
WC Environmental Sciences; Geosciences, Multidisciplinary
SC Environmental Sciences & Ecology; Geology
GA CY8AT
UT WOS:000366631500010
ER
PT J
AU Ball, JL
Stauffer, PH
Calder, ES
Valentine, GA
AF Ball, Jessica L.
Stauffer, Philip H.
Calder, Eliza S.
Valentine, Greg A.
TI The hydrothermal alteration of cooling lava domes
SO BULLETIN OF VOLCANOLOGY
LA English
DT Article
DE Hydrothermal alteration; Lava dome; Lava dome collapse; Numerical
modeling
ID CASITA-VOLCANO; UNZEN VOLCANO; ELECTRICAL-RESISTIVITY;
GUADELOUPE-VOLCANO; SOUFRIERE VOLCANO; LESSER-ANTILLES; FLANK-COLLAPSE;
HEAT-TRANSPORT; MOUNT-RAINIER; NEW-ZEALAND
AB Hydrothermal alteration is a recognized cause of volcanic instability and edifice collapse, including that of lava domes or dome complexes. Alteration by percolating fluids transforms primary minerals in dome lavas to weaker secondary products such as clay minerals; moreover, secondary mineral precipitation can affect the porosity and permeability of dome lithologies. The location and intensity of alteration in a dome depend heavily on fluid pathways and availability in conjunction with heat supply. Here we investigate postemplacement lava dome weakening by hydrothermal alteration using a finite element numerical model of water migration in simplified dome geometries. This is combined with the rock alteration index (RAI) to predict zones of alteration and secondary mineral precipitation. Our results show that alteration potential is highest at the interface between the hot core of a lava dome and its clastic talus carapace. The longest lived alteration potential fields occur in domes with persistent heat sources and permeabilities that allow sufficient infiltration of water for alteration processes, but not so much that domes cool quickly. This leads us to conclude that alteration-induced collapses are most likely to be shallow seated and originate in the talus or talus/core interface in domes which have a sustained supply of magmatic heat. Mineral precipitation at these zones of permeability contrast could create barriers to fluid flow, potentially causing gas pressurization which might promote deeper seated and larger volume collapses. This study contributes to our knowledge of how hydrothermal alteration can affect lava domes and provides constraints on potential sites for alteration-related collapses, which can be used to target hazard monitoring.
C1 [Ball, Jessica L.; Valentine, Greg A.] SUNY Buffalo, Dept Geol, Buffalo, NY 14260 USA.
[Ball, Jessica L.] US Geol Survey, Menlo Pk, CA 94025 USA.
[Stauffer, Philip H.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Calder, Eliza S.] Univ Edinburgh, Sch GeoSci, Edinburgh EH9 3JW, Midlothian, Scotland.
RP Ball, JL (reprint author), SUNY Buffalo, Dept Geol, 411 Cooke Hall, Buffalo, NY 14260 USA.
EM jlball@usgs.gov
OI Ball, Jessica/0000-0002-7837-8180; Stauffer, Philip/0000-0002-6976-221X
FU National Science Foundation [1010210, 1228217]; University at Buffalo
Center For Geohazards Studies
FX This manuscript benefited greatly from the comments by J. White and two
anonymous reviewers. This work was supported by a National Science
Foundation Graduate Research Fellowship 1010210, National Science
Foundation Award 1228217, and a scholarship from the University at
Buffalo Center For Geohazards Studies. Numerical modeling was performed
with the Los Alamos National Laboratory's Subsurface Flow and Transport
Team and the University at Buffalo's Center for Computational Research.
NR 93
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U1 0
U2 8
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0258-8900
EI 1432-0819
J9 B VOLCANOL
JI Bull. Volcanol.
PD DEC
PY 2015
VL 77
IS 12
AR 102
DI 10.1007/s00445-015-0986-z
PG 16
WC Geosciences, Multidisciplinary
SC Geology
GA CY8CD
UT WOS:000366635200005
ER
PT J
AU Aldiri, I
Ajioka, I
Xu, BS
Zhang, JK
Chen, X
Benavente, C
Finkelstein, D
Johnson, D
Akiyama, J
Pennacchio, LA
Dyer, MA
AF Aldiri, Issam
Ajioka, Itsuki
Xu, Beisi
Zhang, Jiakun
Chen, Xiang
Benavente, Claudia
Finkelstein, David
Johnson, Dianna
Akiyama, Jennifer
Pennacchio, Len A.
Dyer, Michael A.
TI Brg1 coordinates multiple processes during retinogenesis and is a tumor
suppressor in retinoblastoma
SO DEVELOPMENT
LA English
DT Article
DE SWI/SNF; Epigenetics; Retina development; Retinoblastoma; Mouse
ID CELL-CYCLE PROGRESSION; ROD DYSTROPHY CORD7; GENE-EXPRESSION; RETINAL
DEVELOPMENT; MOUSE RETINA; DEVELOPMENTAL DEFECTS; CENTRIOLE DUPLICATION;
FATE DETERMINATION; DNA-REPLICATION; GOLGI TRANSPORT
AB Retinal development requires precise temporal and spatial coordination of cell cycle exit, cell fate specification, cell migration and differentiation. When this process is disrupted, retinoblastoma, a developmental tumor of the retina, can form. Epigenetic modulators are central to precisely coordinating developmental events, and many epigenetic processes have been implicated in cancer. Studying epigenetic mechanisms in development is challenging because they often regulate multiple cellular processes; therefore, elucidating the primary molecular mechanisms involved can be difficult. Here we explore the role of Brg1 (Smarca4) in retinal development and retinoblastoma in mice using molecular and cellular approaches. Brg1 was found to regulate retinal size by controlling cell cycle length, cell cycle exit and cell survival during development. Brg1 was not required for cell fate specification but was required for photoreceptor differentiation and cell adhesion/polarity programs that contribute to proper retinal lamination during development. The combination of defective cell differentiation and lamination led to retinal degeneration in Brg1-deficient retinae. Despite the hypocellularity, premature cell cycle exit, increased cell death and extended cell cycle length, retinal progenitor cells persisted in Brg1-deficient retinae, making them more susceptible to retinoblastoma. ChIP-Seq analysis suggests that Brg1 might regulate gene expression through multiple mechanisms.
C1 [Aldiri, Issam; Zhang, Jiakun; Benavente, Claudia; Dyer, Michael A.] St Jude Childrens Res Hosp, Dept Dev Neurobiol, Memphis, TN 38105 USA.
[Ajioka, Itsuki] Tokyo Med & Dent Univ, Ctr Brain Integrat Res, Tokyo 1138510, Japan.
[Xu, Beisi; Chen, Xiang; Finkelstein, David] St Jude Childrens Res Hosp, Dept Computat Biol, Memphis, TN 38105 USA.
[Johnson, Dianna; Dyer, Michael A.] Univ Tennessee, Ctr Hlth Sci, Dept Ophthalmol, Memphis, TN 38163 USA.
[Akiyama, Jennifer; Pennacchio, Len A.] Lawrence Berkeley Natl Lab, Genom Div, Berkeley, CA 94701 USA.
[Akiyama, Jennifer; Pennacchio, Len A.] Joint Genome Inst, Dept Energy, Walnut Creek, CA 94598 USA.
[Dyer, Michael A.] Howard Hughes Med Inst, Chevy Chase, MD 20815 USA.
RP Dyer, MA (reprint author), St Jude Childrens Res Hosp, Dept Dev Neurobiol, 332 N Lauderdale St, Memphis, TN 38105 USA.
EM michael.dyer@stjude.org
RI Xu, Beisi/C-8560-2009
OI Xu, Beisi/0000-0003-0099-858X
FU Cancer Center Support from National Cancer Institute (NCI) [CA21765];
National Institutes of Health (NIH) [EY014867, EY018599, CA168875];
American Lebanese Syrian Associated Charities (ALSAC); Alex's Lemonade
Stand Foundation for Childhood Cancer; National Institute of Dental and
Craniofacial Research (NIDCR) [U01DE020060NIH]; National Human Genome
Research Institute (NHGRI) [R01HG003988, U54HG006997]; Department of
Energy [DE-AC02-05CH11231]
FX This work was supported, in part, by Cancer Center Support [CA21765]
from the National Cancer Institute (NCI), grants to M.A.D. from the
National Institutes of Health (NIH) [EY014867 and EY018599 and
CA168875], and the American Lebanese Syrian Associated Charities
(ALSAC). M.A.D. was also supported by a grant from Alex's Lemonade Stand
Foundation for Childhood Cancer. L.A.P. was supported by a National
Institute of Dental and Craniofacial Research (NIDCR) FaceBase grant
[U01DE020060NIH] and by National Human Genome Research Institute (NHGRI)
grants [R01HG003988 and U54HG006997], and research was conducted at the
E. O. Lawrence Berkeley National Laboratory and performed under
Department of Energy Contract DE-AC02-05CH11231. Deposited in PMC for
immediate release.
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U1 1
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PU COMPANY OF BIOLOGISTS LTD
PI CAMBRIDGE
PA BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE CB4 4DL,
CAMBS, ENGLAND
SN 0950-1991
EI 1477-9129
J9 DEVELOPMENT
JI Development
PD DEC 1
PY 2015
VL 142
IS 23
BP 4092
EP 4106
DI 10.1242/dev.124800
PG 15
WC Developmental Biology
SC Developmental Biology
GA CY4FK
UT WOS:000366363800010
PM 26628093
ER
PT J
AU Sitte, J
Loffler, S
Burkhardt, EM
Goldfarb, KC
Buchel, G
Hazen, TC
Kusel, K
AF Sitte, Jana
Loeffler, Sylvia
Burkhardt, Eva-Maria
Goldfarb, Katherine C.
Buechel, Georg
Hazen, Terry C.
Kuesel, Kirsten
TI Metals other than uranium affected microbial community composition in a
historical uranium-mining site
SO ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
LA English
DT Article
DE Uranium mining; Heavy metal and radionuclide contamination; Microbial
community composition; Soil bacteria
ID SULFATE-REDUCING BACTERIA; HEAVY-METALS; RESIDUAL CONTAMINATION; CLONE
LIBRARY; SOIL; DIVERSITY; REDUCTION; RESISTANCE; MICROARRAY; TOXICITY
AB To understand the links between the long-term impact of uranium and other metals on microbial community composition, ground- and surface water-influenced soils varying greatly in uranium and metal concentrations were investigated at the former uranium-mining district in Ronneburg, Germany. A soil-based 16S PhyloChip approach revealed 2358 bacterial and 35 archaeal operational taxonomic units (OTU) within diverse phylogenetic groups with higher OTU numbers than at other uranium-contaminated sites, e.g., at Oak Ridge. Iron- and sulfate-reducing bacteria (FeRB and SRB), which have the potential to attenuate uranium and other metals by the enzymatic and/or abiotic reduction of metal ions, were found at all sites. Although soil concentrations of solid-phase uranium were high, ranging from 5 to 1569 mu g center dot g (dry weight) soil(-1), redundancy analysis (RDA) and forward selection indicated that neither total nor bio-available uranium concentrations contributed significantly to the observed OTU distribution. Instead, microbial community composition appeared to be influenced more by redox potential. Bacterial communities were also influenced by bio-available manganese and total cobalt and cadmium concentrations. Bio-available cadmium impacted FeRB distribution while bio-available manganese and copper as well as solid-phase zinc concentrations in the soil affected SRB composition. Archaeal communities were influenced by the bio-available lead as well as total zinc and cobalt concentrations. These results suggest that (i) microbial richness was not impacted by heavy metals and radionuclides and that (ii) redox potential and secondary metal contaminants had the strongest effect on microbial community composition, as opposed to uranium, the primary source of contamination.
C1 [Sitte, Jana; Loeffler, Sylvia; Burkhardt, Eva-Maria; Kuesel, Kirsten] Univ Jena, Inst Ecol, Aquat Geomicrobiol, D-07743 Jena, Germany.
[Loeffler, Sylvia; Buechel, Georg] Univ Jena, Inst Earth Sci, D-07749 Jena, Germany.
[Sitte, Jana; Goldfarb, Katherine C.; Hazen, Terry C.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
[Hazen, Terry C.] Univ Tennessee, Civil & Environm Engn Dept, Earth & Planetary Sci, Microbiol, Knoxville, TN 37996 USA.
[Hazen, Terry C.] Oak Ridge Natl Lab, Div Biol Sci, Oak Ridge, TN 37831 USA.
[Kuesel, Kirsten] German Ctr Integrat Biodivers Res iDiv, D-04103 Leipzig, Germany.
RP Kusel, K (reprint author), Univ Jena, Inst Ecol, Aquat Geomicrobiol, D-07743 Jena, Germany.
EM Kirsten.Kuesel@uni-jena.de
RI iDiv, Deutsches Zentrum/B-5164-2016; Hazen, Terry/C-1076-2012
OI Hazen, Terry/0000-0002-2536-9993
FU German Research Foundation [DFG 1257]
FX The authors thank Dirk Merten and Denise M. Akob for the valuable
discussion, Ingo Schoning for soil horizon nomenclature, Michael Rzanny
for the helpful suggestions with the statistical analyses, Katy Hartwig
and Sylvia MeiBner for the technical assistance, and Peter Bouwma for
proofreading the manuscript. This project was part of the graduate
research school "Alteration and element mobility at the microbe-mineral
interface" financially supported by the German Research Foundation (DFG
1257) and embedded in the Jena School of Microbial Communication (JSMC).
NR 77
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U1 9
U2 40
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 0944-1344
EI 1614-7499
J9 ENVIRON SCI POLLUT R
JI Environ. Sci. Pollut. Res.
PD DEC
PY 2015
VL 22
IS 24
BP 19326
EP 19341
DI 10.1007/s11356-015-4791-1
PG 16
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA CY8CX
UT WOS:000366637300003
PM 26122566
ER
PT J
AU Xu, SA
Onishi, N
Tsurusaki, A
Manaka, Y
Wang, WH
Muckerman, JT
Fujita, E
Himeda, Y
AF Xu, Shaoan
Onishi, Naoya
Tsurusaki, Akihiro
Manaka, Yuichi
Wang, Wan-Hui
Muckerman, James T.
Fujita, Etsuko
Himeda, Yuichiro
TI Efficient Cp*Ir Catalysts with Imidazoline Ligands for CO2 Hydrogenation
SO EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
LA English
DT Article
DE Homogeneous catalysis; Iridium; CO2 hydrogenation
ID CARBON-DIOXIDE HYDROGENATION; RUTHENIUM PINCER COMPLEX; FORMIC-ACID;
AQUEOUS-MEDIA; FORMATE; STORAGE; WATER; DEHYDROGENATION; BICARBONATE;
GENERATION
AB We report newly developed iridium catalysts with electron-donating imidazoline moieties as ligands for the hydrogenation of CO2 to formate in aqueous solution. Interestingly, these new complexes promote CO2 hydrogenation much more effectively than their imidazole analogues and exhibit a turnover frequency (TOF) of 1290 h(-1) for the bisimidazoline complex compared to that of 20 h(-1) for the bisimidazole complex at 1 MPa and 50 degrees C. In addition, the hydrogenation proceeds smoothly even under atmospheric pressure at room temperature. The TOF of 43 h(-1) for the bisimidazoline complex is comparable to that of a dinuclear complex (70 h(-1), highest TOF reported) [Nat. Chem. 2012, 4, 383], which in-corporates proton-responsive ligands with pendent-OH groups in the second coordination sphere. The catalytic activity of the complex with an N-methylated imidazoline moiety is much the same as that of the corresponding pyridyl-imidazoline analogue. This result and the UV/Vis titrations of the imidazoline complexes indicate that the high activity is not attributable to the deprotonation of NH on the imidazoline under the reaction conditions.
C1 [Xu, Shaoan; Onishi, Naoya; Tsurusaki, Akihiro; Manaka, Yuichi; Himeda, Yuichiro] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan.
[Xu, Shaoan; Onishi, Naoya; Himeda, Yuichiro] Japan Sci & Technol Agcy, ACT C, Kawaguchi, Saitama 3320012, Japan.
[Wang, Wan-Hui] Dalian Univ Technol, Sch Petr & Chem Engn, Panjin 124221, Peoples R China.
[Muckerman, James T.; Fujita, Etsuko] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Onishi, N (reprint author), Natl Inst Adv Ind Sci & Technol, Tsukuba Cent 5,1-1-1 Higashi, Tsukuba, Ibaraki 3058565, Japan.
EM n.onishi@aist.go.jp; himeda.y@aist.go.jp
RI Wang, Wan-Hui/J-8773-2012; Onishi, Naoya/I-6373-2016;
OI Wang, Wan-Hui/0000-0002-5943-4589; Manaka, Yuichi/0000-0001-5872-3365;
Tsurusaki, Akihiro/0000-0002-9392-539X
FU Japan Science and Technology Agency (JST), ACT-C; Dalian University of
Technology [Fundamental Research Funds for the Central Universities]
[DUT14RC(3)082, 844401]; National Natural Science Foundation of China
[21402019]; U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences [DE-SC00112704]
FX S. X., N. O., Y. M., and Y. H. thank the Japan Science and Technology
Agency (JST), ACT-C for financial support. W.-H. W. is grateful for the
financial support from Dalian University of Technology [the Fundamental
Research Funds for the Central Universities, Grant No. DUT14RC(3)082;
Grant No. 844401] and the National Natural Science Foundation of China
(Grant No. 21402019). The work at BNL was carried out with the U.S.
Department of Energy, Office of Science, Office of Basic Energy Sciences
under contract DE-SC00112704.
NR 39
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U1 19
U2 66
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1434-1948
EI 1099-0682
J9 EUR J INORG CHEM
JI Eur. J. Inorg. Chem.
PD DEC
PY 2015
IS 34
BP 5591
EP 5594
DI 10.1002/ejic.201501030
PG 4
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA CY5EZ
UT WOS:000366432200002
ER
PT J
AU Miller, DL
Boro, BJ
Grubel, K
Helm, ML
Appel, AM
AF Miller, Deanna L.
Boro, Brian J.
Grubel, Katarzyna
Helm, Monte L.
Appel, Aaron M.
TI Synthesis and Characterization of a Triphos Ligand Derivative and the
Corresponding Pd-II Complexes
SO EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
LA English
DT Article
DE P ligands; Tridentate ligands; Palladium; Crystallography;
Electrochemistry
ID ELECTROCHEMICAL REDUCTION; CRYSTAL-STRUCTURE; CARBON-DIOXIDE; CO2
REDUCTION; SUBSTITUTION; PALLADIUM; ACTIVATION; REACTIVITY; CATALYSTS;
PD(II)
AB The synthesis of the new bis[2-(diphenylphosphino)ethyl]-(hydroxymethyl)phosphine tridentate ligand L-CH2OH/Ph is reported. The ligand reacts with [Pd(Cl)(2)(PhCN)(2)] to form [Pd(L-CH2OH/Ph)Cl]Cl. Exchange of the chloride ions for triflate (OTf-) using AgOTf yielded pure [Pd(L-CH2OH/Ph) OTf]OTf. In addition to spectral characterization, the free ligand, L-CH2OH/Ph, and the Pd-II complex, [Pd(L-CH2OH/Ph) OTf]OTf, were structurally characterized.
C1 [Miller, Deanna L.; Boro, Brian J.; Grubel, Katarzyna; Helm, Monte L.; Appel, Aaron M.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Helm, ML (reprint author), Pacific NW Natl Lab, POB 999,MS K2-57, Richland, WA 99352 USA.
EM monte.helm@pnnl.gov
OI Appel, Aaron/0000-0002-5604-1253
FU US Department of Energy, the Office of Science, the Office of Basic
Energy Sciences, the Division of Chemical Sciences, the Geosciences
Bio-sciences
FX This research was supported by the US Department of Energy, the Office
of Science, the Office of Basic Energy Sciences, the Division of
Chemical Sciences, the Geosciences & Bio-sciences. Pacific Northwest
National Laboratory (PNNL) is a multiprogram national laboratory
operated for DOE by Battelle.
NR 28
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Z9 1
U1 2
U2 14
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1434-1948
EI 1099-0682
J9 EUR J INORG CHEM
JI Eur. J. Inorg. Chem.
PD DEC
PY 2015
IS 35
BP 5781
EP 5785
DI 10.1002/ejic.201500791
PG 5
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA CY5EO
UT WOS:000366431100009
ER
PT J
AU Meng, YJ
Wang, XZ
Wu, ZG
Wang, SQ
Young, TM
AF Meng, Yujie
Wang, Xinzhou
Wu, Zhenggang
Wang, Siqun
Young, Timothy M.
TI Optimization of cellulose nanofibrils carbon aerogel fabrication using
response surface methodology
SO EUROPEAN POLYMER JOURNAL
LA English
DT Article
DE Carbon aerogel; Cellulose nanofibrils; Oil absorption; Optimization
Response surface methodology (RSM)
ID MECHANICAL-PROPERTIES; FIBERS; CARBONIZATION; ULTRALIGHT; ABSORPTION;
COTTON
AB This research investigated the simultaneous effects of processing parameters in the making of carbon aerogel from cellulose nanofibrils (NFC). Variables such as peak temperature and heating rate at different levels were systematically investigated with the goal of parameter optimization using response surface methodology (RSM). A face-centered central composite design (CCF) was used to evaluate the feasible range of process conditions where the levels of peak temperature and heating rate were varied at levels ranging from 230 degrees C to 320 degrees C. Results indicated that the quadratic model developed for the response surface was adequate for the prediction of optimal parameters. Response surface predictions were developed to explore the integrated and feasible operating space. Optimum conditions were: 300 degrees C peak temperature and a heating rate of 8.00 degrees C/min. The carbon aerogel achieved approximately 90.10 g/g of the normalized oil absorption capacity despite a weight reduction percentage of 82%. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Meng, Yujie; Wang, Xinzhou; Wang, Siqun; Young, Timothy M.] Univ Tennessee, Dept Forestry Wildlife & Fisheries, Ctr Renewable Carbon, Knoxville, TN 37996 USA.
[Wang, Xinzhou] Nanjing Forestry Univ, Dept Mat Sci & Engn, Nanjing, Peoples R China.
[Meng, Yujie; Wu, Zhenggang] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Young, TM (reprint author), Univ Tennessee, Dept Forestry Wildlife & Fisheries, Ctr Renewable Carbon, Knoxville, TN 37996 USA.
EM tmyoung1@utk.edu
RI Young, Timothy/D-9949-2011
OI Young, Timothy/0000-0001-9564-6506
FU U.S. Department of Agriculture Special Wood Utilization [R11-0515-041,
R11-2219-510]; University of Tennessee, Department of Forestry, Wildlife
and Fisheries, Center for Renewable Carbon; UTIA Innovation Grant;
Tennessee Experimental Station Project [TEN00422]; Agricultural
Experiment Station McIntire-Stennis Grant [TENOOMS-101]
FX The authors gratefully acknowledge the support of this research by U.S.
Department of Agriculture Special Wood Utilization Grants R11-0515-041
and R11-2219-510, the University of Tennessee, Department of Forestry,
Wildlife and Fisheries, Center for Renewable Carbon, the financial
support from the UTIA 2013 Innovation Grant and the Tennessee
Experimental Station Project #TEN00422 and the Agricultural Experiment
Station McIntire-Stennis Grant TENOOMS-101.
NR 28
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U1 3
U2 45
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0014-3057
EI 1873-1945
J9 EUR POLYM J
JI Eur. Polym. J.
PD DEC
PY 2015
VL 73
BP 137
EP 148
DI 10.1016/j.eurpolymj.2015.10.007
PG 12
WC Polymer Science
SC Polymer Science
GA CY6RQ
UT WOS:000366536900013
ER
PT J
AU Marrocchi, A
Adriaensens, P
Bartollini, E
Barkakati, B
Carleer, R
Chen, J
Hensley, DK
Petrucci, C
Tassi, M
Vaccaro, L
AF Marrocchi, Assunta
Adriaensens, Peter
Bartollini, Elena
Barkakati, Balaka
Carleer, Robert
Chen, Jihua
Hensley, Dale K.
Petrucci, Chiara
Tassi, Marco
Vaccaro, Luigi
TI Novel cross-linked polystyrenes with large space network as tailor-made
catalyst supports for sustainable media
SO EUROPEAN POLYMER JOURNAL
LA English
DT Article
DE Polystyrenes; Gel-type resins; Polymer supports; Heterogeneous catalyst;
Green chemistry
ID BAYLIS-HILLMAN REACTIONS; SMART CLEAVAGE REACTIONS; POLYMERIC SUPPORTS;
ORGANIC CATALYSTS; REUSABLE CATALYST; SOLVENT; EFFICIENT; TBD;
IMMOBILIZATION; NUCLEOPHILES
AB A novel class of polystyrene-based gel-type resins (SPACeR, SP), containing the large 1,4-bis (4-vinylphenoxy)benzene cross-linker, is introduced; SP-immobilized 1,5,7-triazabicyclo [4.4.0]dec-5-ene (TBD) and triethylamine (TEA) bases are synthesized and characterized in terms of their structural, thermal and morphological features, and their catalytic efficiency in a series of fundamental chemical transformations under solvent-free conditions is investigated. (C) 2015 Published by Elsevier Ltd.
C1 [Marrocchi, Assunta; Bartollini, Elena; Petrucci, Chiara; Vaccaro, Luigi] Univ Perugia, CEMIN Dipartimento Chim Biol & Biotecnol, Lab Green Synthet Organ Chem, I-06123 Perugia, Italy.
[Adriaensens, Peter; Carleer, Robert; Tassi, Marco] Hasselt Univ Appl & Analyt Chem, BE-3590 Diepenbeek, Belgium.
[Barkakati, Balaka; Chen, Jihua; Hensley, Dale K.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Marrocchi, A (reprint author), Univ Perugia, CEMIN Dipartimento Chim Biol & Biotecnol, Lab Green Synthet Organ Chem, Via Elce Sotto 8, I-06123 Perugia, Italy.
EM assunta.marrocchi@unipg.it; luigi.vaccaro@unipg.it
RI Hensley, Dale/A-6282-2016; Vaccaro, Luigi/K-1043-2013; marrocchi,
assunta/B-7583-2014; Chen, Jihua/F-1417-2011; Adriaensens,
Peter/F-3877-2017
OI Hensley, Dale/0000-0001-8763-7765; Vaccaro, Luigi/0000-0003-4168-2303;
Chen, Jihua/0000-0001-6879-5936; Adriaensens, Peter/0000-0003-4183-0150
FU National project "BIT3G" - Italian Green Chemistry Cluster; Universita
degli Studi di Perugia
FX This research has been developed and partially financed within the
National project "BIT3G" - Italian Green Chemistry Cluster.; We
gratefully acknowledge the Universita degli Studi di Perugia for
financial support.
NR 40
TC 3
Z9 3
U1 4
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0014-3057
EI 1873-1945
J9 EUR POLYM J
JI Eur. Polym. J.
PD DEC
PY 2015
VL 73
BP 391
EP 401
DI 10.1016/j.eurpolymj.2015.10.002
PG 11
WC Polymer Science
SC Polymer Science
GA CY6RQ
UT WOS:000366536900034
ER
PT J
AU Wagner, JL
Kearney, SP
Beresh, SJ
DeMauro, EP
Pruett, BO
AF Wagner, Justin L.
Kearney, Sean P.
Beresh, Steven J.
DeMauro, Edward P.
Pruett, Brian O.
TI Flash X-ray measurements on the shock-induced dispersal of a dense
particle curtain
SO EXPERIMENTS IN FLUIDS
LA English
DT Article
ID PRESSURE FUEL SPRAYS; FLOWS
AB The interaction of a Mach 1.67 shock wave with a dense particle curtain is quantified using flash radiography. These new data provide a view of particle transport inside a compressible, dense gas-solid flow of high optical opacity. The curtain, composed of 115-mu m glass spheres, initially spans 87 % of the test section width and has a streamwise thickness of about 2 mm. Radiograph intensities are converted to particle volume fraction distributions using the Beer-Lambert law. The mass in the particle curtain, as determined from the X-ray data, is in reasonable agreement with that given from a simpler method using a load cell and particle imaging. Following shock impingement, the curtain propagates downstream and the peak volume fraction decreases from about 23 to about 4 % over a time of 340 mu s. The propagation occurs asymmetrically, with the downstream side of the particle curtain experiencing a greater volume fraction gradient than the upstream side, attributable to the dependence of particle drag on volume fraction. Bulk particle transport is quantified from the time-dependent center of mass of the curtain. The bulk acceleration of the curtain is shown to be greater than that predicted for a single 115-mu m particle in a Mach 1.67 shock-induced flow.
C1 [Wagner, Justin L.; Kearney, Sean P.; Beresh, Steven J.; DeMauro, Edward P.; Pruett, Brian O.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Wagner, JL (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM jlwagner7@gmail.com
FU internal Laboratory Directed Research and Development (LDRD) grant;
Sandia National Laboratories; US Department of Energy; US Department of
Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
FX The experiments in this work were funded in part with an internal
Laboratory Directed Research and Development (LDRD) grant. The authors
gratefully acknowledge this support. The authors appreciate insightful
conversations with Professor Jonathan Regele on the initial volume
fraction profile and with Professor S. Balachandar on the shape of the
profiles during the interaction. The authors also thank Gerald Stoker
and Enrico Quintana for their assistance with the initial setup of the
flash X-ray system and Thomas Grasser machining of the experimental
hardware. Finally, the authors would also like to thank Ryan Marinis and
Adam Jimenez for their assistance with the computed radiography system.
This work is supported by Sandia National Laboratories and the US
Department of Energy. Sandia National Laboratories is a multi-program
laboratory managed and operated by Sandia Corporation, a wholly owned
subsidiary of Lockheed Martin Corporation, for the US Department of
Energy's National Nuclear Security Administration under Contract
DE-AC04-94AL85000.
NR 36
TC 0
Z9 0
U1 4
U2 16
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0723-4864
EI 1432-1114
J9 EXP FLUIDS
JI Exp. Fluids
PD DEC
PY 2015
VL 56
IS 12
AR 213
DI 10.1007/s00348-015-2087-3
PG 12
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA CY8DU
UT WOS:000366639800009
ER
PT J
AU Song, HS
Renslow, RS
Fredrickson, JK
Lindemann, SR
AF Song, Hyun-Seob
Renslow, Ryan S.
Fredrickson, Jim K.
Lindemann, Stephen R.
TI Integrating Ecological and Engineering Concepts of Resilience in
Microbial Communities
SO FRONTIERS IN MICROBIOLOGY
LA English
DT Article
DE microbial communities; microbial ecology; resilience; resistance;
robustness; stability; networks
ID BIOLOGICAL ROBUSTNESS; BIOGEOCHEMICAL CYCLES; PERTURBATIONS; RESISTANCE;
COLLAPSE; FLUX; RECOVERY; SYSTEMS; FOREST
AB Many definitions of resilience have been proffered for natural and engineered ecosystems, but a conceptual consensus on resilience in microbial communities is still lacking. We argue that the disconnect largely results from the wide variance in microbial community complexity, which range from compositionally simple synthetic consortia to complex natural communities, and divergence between the typical practical outcomes emphasized by ecologists and engineers. Viewing microbial communities as elasto-plastic systems that undergo both recoverable and unrecoverable transitions, we argue that this gap between the engineering and ecological definitions of resilience stems from their respective emphases on elastic and plastic deformation, respectively. We propose that the two concepts may be fundamentally united around the resilience of function rather than state in microbial communities and the regularity in the relationship between environmental variation and a community's functional response. Furthermore, we posit that functional resilience is an intrinsic property of microbial communities and suggest that state changes in response to environmental variation may be a key mechanism driving functional resilience in microbial communities.
C1 [Song, Hyun-Seob; Fredrickson, Jim K.; Lindemann, Stephen R.] Pacific NW Natl Lab, Div Biol Sci, Earth & Biol Sci Directorate, Richland, WA 99352 USA.
[Renslow, Ryan S.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Lindemann, SR (reprint author), Pacific NW Natl Lab, Div Biol Sci, Earth & Biol Sci Directorate, Richland, WA 99352 USA.
EM stephen.lindemann@pnnl.gov
RI Lindemann, Steve/H-6088-2016
OI Lindemann, Steve/0000-0002-3788-5389
FU Genomic Science Program (GSP); Office of Biological and Environmental
Research (OBER); U.S. Department of Energy (DOE); Linus Pauling
Distinguished Postdoctoral Fellowship at PNNL
FX This research was supported by the Genomic Science Program (GSP), Office
of Biological and Environmental Research (OBER), U.S. Department of
Energy (DOE), and is a contribution of the Pacific Northwest National
Laboratory (PNNL) Foundational Scientific Focus Area (FSFA) and
Subsurface Biogeochemistry Research Program's STA. RR was supported by a
Linus Pauling Distinguished Postdoctoral Fellowship at PNNL.
NR 51
TC 3
Z9 3
U1 9
U2 32
PU FRONTIERS MEDIA SA
PI LAUSANNE
PA PO BOX 110, EPFL INNOVATION PARK, BUILDING I, LAUSANNE, 1015,
SWITZERLAND
SN 1664-302X
J9 FRONT MICROBIOL
JI Front. Microbiol.
PD DEC 1
PY 2015
VL 6
AR 1298
DI 10.3389/fmicb.2015.01298
PG 7
WC Microbiology
SC Microbiology
GA CY6YA
UT WOS:000366553500002
PM 26648912
ER
PT J
AU Manuel, MJE
Kuranz, CC
Rasmus, AM
Klein, SR
MacDonald, MJ
Trantham, MR
Fein, JR
Belancourt, PX
Young, RP
Keiter, PA
Drake, RP
Pollock, BB
Park, J
Hazi, AU
Williams, GJ
Chen, H
AF Manuel, M. J. -E.
Kuranz, C. C.
Rasmus, A. M.
Klein, S. R.
MacDonald, M. J.
Trantham, M. R.
Fein, J. R.
Belancourt, P. X.
Young, R. P.
Keiter, P. A.
Drake, R. P.
Pollock, B. B.
Park, J.
Hazi, A. U.
Williams, G. J.
Chen, H.
TI Experimental results from magnetized-jet experiments executed at the
Jupiter Laser Facility
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article; Proceedings Paper
CT 10th International Conference on High Energy Density Laboratory
Astrophysics
CY MAY, 2014
CL Bordeaux, FRANCE
DE Plasma jets; Magnetized plasma; Laboratory astrophysics
ID HYDRODYNAMICS; PLASMAS; FIELD
AB Recent experiments at the Jupiter Laser Facility investigated magnetization effects on collimated plasma jets. Laser-irradiated plastic-cone-targets produced collimated, millimeter-scale plasma flows as indicated by optical interferometry. Proton radiography of these jets showed no indication of strong, self-generated magnetic fields, suggesting a dominantly hydrodynamic collimating mechanism. Targets were placed in a custom-designed solenoid capable of generating field strengths up to 5 T. Proton radiographs of the well-characterized B-field, without a plasma jet, suggested an external source of trapped electrons that affects proton trajectories. The background magnetic field was aligned with the jet propagation direction, as is the case in many astrophysical systems. Optical interferometry showed that magnetization of the plasma results in disruption of the collimated flow and instead produces a hollow cavity. This result is a topic of ongoing investigation. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Manuel, M. J. -E.; Kuranz, C. C.; Rasmus, A. M.; Klein, S. R.; MacDonald, M. J.; Trantham, M. R.; Fein, J. R.; Belancourt, P. X.; Young, R. P.; Keiter, P. A.; Drake, R. P.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
[Pollock, B. B.; Park, J.; Hazi, A. U.; Williams, G. J.; Chen, H.] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Manuel, MJE (reprint author), Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
EM mmanuel@umich.edu
RI Manuel, Mario/L-3213-2015; Drake, R Paul/I-9218-2012;
OI Manuel, Mario/0000-0002-5834-1161; Drake, R Paul/0000-0002-5450-9844;
MacDonald, Michael/0000-0002-6295-6978
FU NASA through Einstein Postdoctoral Fellowship - Chandra X-ray Center
[PF3-140111]; NNSA-DS; SC-OFES Joint Program in High-Energy-Density
Laboratory Plasmas [DE-NA0001840]; Predictive Sciences Academic
Alliances Program in NNSA-ASC [DEFC52-08NA28616]; U.S. DOE
[DE-AC52-07NA27344]; NASA [NAS8-03060]
FX Other support for this work was provided by NASA through Einstein
Postdoctoral Fellowship grant number PF3-140111 awarded by the Chandra
X-ray Center, which is operated by the Astrophysical Observatory for
NASA under contract NAS8-03060, by the NNSA-DS and SC-OFES Joint Program
in High-Energy-Density Laboratory Plasmas, grant number DE-NA0001840 and
by the Predictive Sciences Academic Alliances Program in NNSA-ASC via
grant DEFC52-08NA28616. Work by LLNL was performed under the auspices of
U.S. DOE under contract DE-AC52-07NA27344.
NR 33
TC 2
Z9 2
U1 3
U2 13
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
EI 1878-0563
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD DEC
PY 2015
VL 17
SI SI
BP 52
EP 62
DI 10.1016/j.hedp.2014.07.003
PN A
PG 11
WC Physics, Fluids & Plasmas
SC Physics
GA CY7ES
UT WOS:000366571800010
ER
PT J
AU Bennett, MJ
Lebedev, SV
Hall, GN
Suttle, L
Burdiak, G
Suzuki-Vidal, F
Hare, J
Swadling, G
Patankar, S
Bocchi, M
Chittenden, JP
Smith, R
Frank, A
Blackman, E
Drake, RP
Ciardi, A
AF Bennett, M. J.
Lebedev, S. V.
Hall, G. N.
Suttle, L.
Burdiak, G.
Suzuki-Vidal, F.
Hare, J.
Swadling, G.
Patankar, S.
Bocchi, M.
Chittenden, J. P.
Smith, R.
Frank, A.
Blackman, E.
Drake, R. P.
Ciardi, A.
TI Formation of radiatively cooled, supersonically rotating, plasma flows
in Z-pinch experiments: Towards the development of an experimental
platform to study accretion disk physics in the laboratory
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article; Proceedings Paper
CT 10th International Conference on High Energy Density Laboratory
Astrophysics
CY MAY, 2014
CL Bordeaux, FRANCE
DE Laboratory astrophysics; Accretion disks; Supersonic flow; Rotating
plasma; High energy density
ID ARRAY Z-PINCHES; NUMERICAL SIMULATIONS; BINARIES; DYNAMICS
AB We present data from the first Z-pinch experiments aiming to simulate aspects of accretion disk physics in the laboratory. Using off axis ablation flows from a wire array z-pinch we demonstrate the formation of a supersonically (M similar to 2) rotating hollow plasma cylinder of height similar to 4 mm and radius 2 mm. Using a combination of diagnostics we measure the rotation speed (similar to 60 kms(-1)), electron density (10(19) cm(-3)), ion temperature (Ti similar to 60 eV) and the product of electron temperature and average ionisation ( ZT(e) similar to 150 to 200 eV). Using these parameters we calculate the Reynolds number for the plasma on the order 10(5) and magnetic Reynolds number as 10 - 100. The plasma flow is maintained for 150 ns, corresponding to one rotation period, which should allow for studying fast instabilities which develop on this time- scale. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Bennett, M. J.; Lebedev, S. V.; Hall, G. N.; Suttle, L.; Burdiak, G.; Suzuki-Vidal, F.; Hare, J.; Swadling, G.; Patankar, S.; Bocchi, M.; Chittenden, J. P.; Smith, R.] Imperial Coll London, Blackett Lab, London, England.
[Hall, G. N.] Lawrence Livermore Natl Lab, Berkeley, CA USA.
[Frank, A.; Blackman, E.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA.
[Drake, R. P.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
[Ciardi, A.] Univ Paris 06, Sorbonne Univ, LERMA, UMR 8112, F-75005 Paris, France.
[Ciardi, A.] PSL Res Univ, Observ Paris, LERMA, CNRS,UMR 8112, F-75014 Paris, France.
RP Bennett, MJ (reprint author), Imperial Coll London, Blackett Lab, London, England.
EM m.bennett11@imperial.ac.uk; s.lebedev@imperial.ac.uk
RI Drake, R Paul/I-9218-2012;
OI Drake, R Paul/0000-0002-5450-9844; Swadling, George/0000-0001-8370-8837
FU EPSRC Grant [EP/G001324/1]; DOE [DE-F03-02NA00057, DE-SC-0001063]
FX This work was supported in part by EPSRC Grant No. EP/G001324/1 and by
DOE cooperative agreements No. DE-F03-02NA00057 and No. DE-SC-0001063.
NR 17
TC 2
Z9 2
U1 3
U2 15
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
EI 1878-0563
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD DEC
PY 2015
VL 17
SI SI
BP 63
EP 67
DI 10.1016/j.hedp.2015.02.001
PN A
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA CY7ES
UT WOS:000366571800011
ER
PT J
AU Espinosa, G
Gil, JM
Rodriguez, R
Rubiano, JG
Mendoza, MA
Martel, P
Minguez, E
Suzuki-Vidal, F
Lebedev, SV
Swadling, GF
Burdiak, G
Pickworth, LA
Skidmore, J
AF Espinosa, G.
Gil, J. M.
Rodriguez, R.
Rubiano, J. G.
Mendoza, M. A.
Martel, P.
Minguez, E.
Suzuki-Vidal, F.
Lebedev, S. V.
Swadling, G. F.
Burdiak, G.
Pickworth, L. A.
Skidmore, J.
TI Collisional-radiative simulations of a supersonic and radiatively cooled
aluminum plasma jet
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article; Proceedings Paper
CT 10th International Conference on High Energy Density Laboratory
Astrophysics
CY MAY, 2014
CL Bordeaux, FRANCE
DE Aluminum plasmas; Supersonic jet; Radiatively cooled plasma jet; Kinetic
population simulation
ID LABORATORY ASTROPHYSICS; OPTICALLY THIN; CRITERIA; OUTFLOWS; PACKAGE;
GASES; ATOMS; CODE
AB A computational investigation based on collisional-radiative simulations of a supersonic and radiatively cooled aluminum plasma jet is presented. The jet, both in vacuum and in argon ambient gas, was produced on the MAGPIE (Mega Ampere Generator for Plasma Implosion Experiments) generator and is formed by ablation of an aluminum foil driven by a 1.4 MA, 250 ns current pulse in a radial foil Z-pinch configuration. In this work, population kinetics and radiative properties simulations of the jet in different theoretical approximations were performed. In particular, local thermodynamic equilibrium (LTE), non-LTE steady state (SS) and non-LTE time dependent (TD) models have been considered. This study allows us to make a convenient microscopic characterization of the aluminum plasma jet. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Espinosa, G.; Gil, J. M.; Rodriguez, R.; Rubiano, J. G.; Mendoza, M. A.; Martel, P.] Univ Las Palmas Gran Canaria, Dept Fis, Las Palmas Gran Canaria, Spain.
[Gil, J. M.; Rodriguez, R.; Rubiano, J. G.; Martel, P.; Minguez, E.] Univ Politecn Madrid, Inst Fus Nucl, E-28006 Madrid, Spain.
[Suzuki-Vidal, F.; Lebedev, S. V.; Swadling, G. F.; Burdiak, G.] Imperial Coll London, Plasma Phys Grp, London, England.
[Pickworth, L. A.] Lawrence Livermore Natl Lab, Berkeley, CA USA.
[Skidmore, J.] AWE Aldermaston, Reading, Berks, England.
RP Espinosa, G (reprint author), Univ Las Palmas Gran Canaria, Dept Fis, Campus Tafira, Las Palmas Gran Canaria, Spain.
EM gespinosa@girma.gi.ulpgc.es
RI Swadling, George/S-5980-2016;
OI Swadling, George/0000-0001-8370-8837; Pickworth,
Louisa/0000-0002-0585-1934; Martel-Escobar, Pablo/0000-0001-7883-5970
FU Research Project of the Spanish Government [ENE2009-11208/FTN]; European
Union
FX This work has been supported by the Research Project of the Spanish
Government (ENE2009-11208/FTN) and also by the Keep in touch and ToIFE
Projects of the European Union.
NR 31
TC 4
Z9 4
U1 1
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
EI 1878-0563
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD DEC
PY 2015
VL 17
SI SI
BP 74
EP 84
DI 10.1016/j.hedp.2014.10.008
PN A
PG 11
WC Physics, Fluids & Plasmas
SC Physics
GA CY7ES
UT WOS:000366571800013
ER
PT J
AU Holgado, AM
Ferguson, JM
McClarren, RG
AF Holgado, A. M.
Ferguson, J. M.
McClarren, R. G.
TI Anti-diffusive-like-behavior in semi-analytic radiative shocks via
multigroup S-n transport with constant cross sections
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE Radiative shock; Semi-analytic; Multigroup; Planck function;
Anti-diffusive
AB Semi-analytic lab-frame radiative shock solutions have been presented recently, wherein the radiation is modeled with either grey (frequency independent) nonequilibrium-diffusion or grey S-n-transport. As a first step toward incorporating frequency dependence, we retain grey cross-sections such that the frequency dependence of the problem is strictly due to the Planck function. By using multigroup frequency integration the frequency-dependent radiation-transport equation may be solved, and group-dependent radiation temperatures may be defined for each group. Our main result is: When a Zel'dovich temperature spike exists in a radiative shock solution, there exists a transition group g(T), such that for all frequency groups below g(T) the group-dependent radiation temperatures are spatially monotonic, and for all frequency groups above g(T) the group-dependent radiation temperatures are spatially non-monotonic. We present numerical evidence of our claim and make no claim as to the monotonicity of group g(T). (C) 2015 Elsevier B.V. All rights reserved.
C1 [Holgado, A. M.] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA.
[Ferguson, J. M.] Los Alamos Natl Lab, X Theoret Div XTD, Los Alamos, NM 87545 USA.
[McClarren, R. G.] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
RP Ferguson, JM (reprint author), Los Alamos Natl Lab, X Theoret Div XTD, POB 1663, Los Alamos, NM 87545 USA.
EM jmferguson@lanl.gov
FU U.S. Department of Energy [B599687]
FX This work was performed under the auspices of the U.S. Department of
Energy, contract B599687. We are grateful to the anonymous reviewer for
many helpful comments which improved the flow and quality of the
article.
NR 12
TC 0
Z9 0
U1 1
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
EI 1878-0563
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD DEC
PY 2015
VL 17
SI SI
BP 114
EP 118
DI 10.1016/j.hedp.2015.03.004
PN A
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA CY7ES
UT WOS:000366571800018
ER
PT J
AU Hansen, EC
Frank, A
Hartigan, P
Yirak, K
AF Hansen, E. C.
Frank, A.
Hartigan, P.
Yirak, K.
TI Numerical simulations of Mach stem formation via intersecting bow shocks
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE Shock wave phenomena; Herbig-Haro objects; ISM; Mach stems; Jets and
outflows
ID HUBBLE-SPACE-TELESCOPE; MASS-LOSS; EMISSION; JETS; ACCRETION; STARS
AB Hubble Space Telescope observations show bright knots of Ha emission within outflowing young stellar jets. Velocity variations in the flow create secondary bow shocks that may intersect and lead to enhanced emission. When the bow shocks intersect at or above a certain critical angle, a planar shock called a Mach stem is formed. These shocks could produce brighter Ha emission since the incoming flow to the Mach stem is parallel to the shock normal. In this paper we report first results of a study using 2-D numerical simulations designed to explore Mach stem formation at the intersection of bow shocks formed by hypersonic "bullets" or "clumps". Our 2-D simulations show how the bow shock shapes and intersection angles change as the adiabatic index gamma changes. We show that the formation or lack of a Mach stem in our simulations is consistent with the steady-state Mach stem formation theory. Our ultimate goal, which is part of an ongoing research effort, is to characterize the physical and observational consequences of bow shock intersections including the formation of Mach stems. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Hansen, E. C.; Frank, A.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA.
[Hartigan, P.] Rice Univ, Dept Phys & Astron, Houston, TX 77521 USA.
[Yirak, K.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Hansen, EC (reprint author), Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA.
EM ehansen@pas.rochester.edu
FU National Science Foundation [OCI-1053575, AST-0807363]; LLE at the
University of Rochester, Space Telescope Science Institute grants
[HST-AR-11251.01-A, HST-AR-12128.01-A]; Department of Energy
[de-sc0001063]
FX This work used the Extreme Science and Engineering Discovery Environment
(XSEDE), which is supported by National Science Foundation grant number
OCI-1053575. The CIRC at the University of Rochester provided
computational resources. Financial support for this project was provided
by the LLE at the University of Rochester, Space Telescope Science
Institute grants HST-AR-11251.01-A and HST-AR-12128.01-A; by the
National Science Foundation under award AST-0807363; by the Department
of Energy under award de-sc0001063.
NR 22
TC 1
Z9 1
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
EI 1878-0563
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD DEC
PY 2015
VL 17
SI SI
BP 135
EP 139
DI 10.1016/j.hedp.2014.12.005
PN A
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA CY7ES
UT WOS:000366571800021
ER
PT J
AU Casner, A
Martinez, D
Smalyuk, V
Masse, L
Kane, JO
Villette, B
Fariaut, J
Oudot, G
Liberatore, S
Mancini, RC
Remington, BA
Heeter, RF
AF Casner, A.
Martinez, D.
Smalyuk, V.
Masse, L.
Kane, J. O.
Villette, B.
Fariaut, J.
Oudot, G.
Liberatore, S.
Mancini, R. C.
Remington, B. A.
Heeter, R. F.
TI Long duration X-ray drive hydrodynamics experiments relevant for
laboratory astrophysics
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE National ignition facility; Hydrodynamic instabilities; High energy
density laboratory astrophysics; Supernovae; Molecular clouds;
Photoionization
ID NATIONAL-IGNITION-FACILITY; INERTIAL CONFINEMENT FUSION;
RAYLEIGH-TAYLOR; SUPERSONIC TURBULENCE; SCALING LAWS; BLAST-WAVE;
INSTABILITY; DYNAMICS; FRONTS; MODEL
AB The advent of high-power lasers facilities such as the National Ignition Facility (NIF), and the Laser Megajoule (LMJ) in the near future, opens a new era in the field of High Energy Density Laboratory Astrophysics. These versatile laser facilities will provide unique platforms to study the rich physics of nonlinear and turbulent mixing flows. The extended laser pulse duration could be harnessed to accelerate targets over much larger distances and longer time periods than previously achieved. We report on the first results acquired on NIF with the ablative Rayleigh-Taylor Instability (RTI) platform. A 20-ns X-ray drive is tailored to accelerate planar modulated samples into the highly-nonlinear bubble merger regime. Based on the analogy between flames front and ablation front, highly nonlinear RTI measurements at ablation front can provide important insights into the initial deflagration stage of thermonuclear supernova of Type Ia. We also report on an innovative concept used to create even longer drive on multi-beam laser facilities. The multi-barrel hohlraum (Gattling Gun) approach consists, here, of three adjacent cavities, driven in succession in time. This novel concept has been validated on the Omega EP laser system. The three cavities were irradiated with three 6-10 ns pulse UV beams and a 30 ns, 90 eV X-ray radiation drive was measured with the time-resolved X-ray spectrometer mu DMX. This concept is promising to investigate the pillar structures in the Eagle Nebula or for photoionization studies which require a steady light source of sufficient duration to recreate relevant physics. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Casner, A.; Masse, L.; Villette, B.; Fariaut, J.; Oudot, G.; Liberatore, S.] CEA, DAM, DIF, F-91297 Arpajon, France.
[Martinez, D.; Smalyuk, V.; Kane, J. O.; Remington, B. A.; Heeter, R. F.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Mancini, R. C.] Univ Nevada, Reno, NV 89557 USA.
RP Casner, A (reprint author), CEA, DAM, DIF, F-91297 Arpajon, France.
EM alexis.casner@cea.fr
RI Masse, Laurent/F-1476-2016; CASNER, Alexis/B-7458-2014
OI CASNER, Alexis/0000-0003-2176-1389
NR 45
TC 1
Z9 1
U1 1
U2 13
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
EI 1878-0563
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD DEC
PY 2015
VL 17
SI SI
BP 146
EP 150
DI 10.1016/j.hedp.2014.09.003
PN A
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA CY7ES
UT WOS:000366571800023
ER
PT J
AU Montgomery, MH
Falcon, RE
Rochau, GA
Bailey, JE
Gomez, TA
Carlson, AL
Bliss, DE
Nagayama, T
Stein, M
Winget, E
AF Montgomery, M. H.
Falcon, Ross E.
Rochau, G. A.
Bailey, J. E.
Gomez, T. A.
Carlson, A. L.
Bliss, D. E.
Nagayama, T.
Stein, M.
Winget, E.
TI An experimental platform for creating white dwarf photospheres in the
laboratory: Preliminary results
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE Laboratory experiments; Astrophysics; Hydrogen line profiles; Stellar
atmospheres; White dwarf stars
ID HIGH-DENSITY PLASMA; HE-II LINES; MASS-DISTRIBUTION; MEAN MASS; DA;
STARS; PROFILES; ENERGY; TABLES; SDSS
AB We present the current status of the White Dwarf Photosphere Experiment at the Z Pulsed Power Facility at Sandia National Laboratories. This experiment has evolved into a unique platform for simultaneously measuring emission, absorption, and back-lighter continua spectra of plasmas with white dwarf (WD) photospheric compositions and conditions (T-e similar to 1 eV, n(e)similar to 10(16)-10(18)e/cm(3)); our current experiments involve line profile measurements of hydrogen-corresponding to the most common surface composition in white dwarf stars, with future experiments planned for helium, carbon, and oxygen. These profiles will test line broadening theories used in white dwarf model atmospheres to infer the fundamental parameters (e.g., effective temperature and mass) of thousands of WDs. This experiment uses the large amount of x-rays generated from a z-pinch dynamic hohlraum to radiatively drive plasma formation in a gas cell. We reach significantly higher densities than the landmark study of Wiese et al. (1972), thereby putting competing line broadening theories to the test in a regime where their predictions strongly diverge. The simultaneous measurement of emission, absorption, and back-lighter continua in macroscopic plasmas represents a significant advance relative to hydrogen line profile experiments of the past. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Montgomery, M. H.; Falcon, Ross E.; Gomez, T. A.; Stein, M.; Winget, E.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA.
[Montgomery, M. H.; Falcon, Ross E.; Gomez, T. A.; Stein, M.; Winget, E.] Univ Texas Austin, McDonald Observ, Austin, TX 78712 USA.
[Falcon, Ross E.; Rochau, G. A.; Bailey, J. E.; Gomez, T. A.; Carlson, A. L.; Bliss, D. E.; Nagayama, T.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Montgomery, MH (reprint author), Univ Texas Austin, Dept Astron, RLM 15308, Austin, TX 78712 USA.
EM mikemon@astro.as.utexas.edu
FU Laboratory Directed Research and Development program; United States
Department of Energy [DE-AC04-94AL85000]; National Science Foundation
Graduate Research Fellowship Program [DGE-1110007]; Norman Hackerman
Advanced Research Program [003658-0252-2009]; Department of Energy
[DE-SC0010623]; National Physical Science Consortium
FX We thank P.-E. Tremblay for providing tables of Stark-broadened hydrogen
lines for use in line profile fitting to our data. This work was
performed at Sandia National Laboratories and is supported by the
Laboratory Directed Research and Development program. We thank the Z
dynamic hohlraum, accelerator, diagnostics, materials processing, target
fabrication, and wire array teams, without which we cannot run our
experiments. Sandia is a multiprogram laboratory operated by Sandia
Corporation, a Lockheed Martin Company, for the United States Department
of Energy under contract DE-AC04-94AL85000. This work has made use of
NASA's Astrophysics Data System Bibliographic Services. R.E.F.
acknowledges support of the National Physical Science Consortium, T.A.G.
acknowledges support from the National Science Foundation Graduate
Research Fellowship Program under grant DGE-1110007, and R.E.F., T.A.G.,
M.H.M., and D.E.W. gratefully acknowledge support of the Norman
Hackerman Advanced Research Program under grant 003658-0252-2009 and the
Department of Energy under grant DE-SC0010623.
NR 40
TC 1
Z9 1
U1 3
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
EI 1878-0563
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD DEC
PY 2015
VL 17
SI SI
BP 168
EP 174
DI 10.1016/j.hedp.2015.01.004
PN A
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA CY7ES
UT WOS:000366571800027
ER
PT J
AU Higginson, DP
Korneev, P
Beard, J
Chen, SN
d'Humieres, E
Pepin, H
Pikuz, S
Pollock, B
Riquier, R
Tikhonchuk, V
Fuchs, J
AF Higginson, D. P.
Korneev, Ph
Beard, J.
Chen, S. N.
d'Humieres, E.
Pepin, H.
Pikuz, S.
Pollock, B.
Riquier, R.
Tikhonchuk, V.
Fuchs, J.
TI A novel platform to study magnetized high-velocity collisionless shocks
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE Astrophysical collisionless shocks; Magnetized plasmas;
High-velocity-shocks
ID COUNTER-STREAMING PLASMAS; PARTICLE-ACCELERATION; LASER; SIMULATIONS;
GENERATION; DRIVEN; BEAMS
AB An experimental platform to study the interaction of two colliding high-velocity (0.01-0.2 c; 0.05 -20 MeV) proton plasmas in a high strength (20 T) magnetic field is introduced. This platform aims to study the collision of magnetized plasmas accelerated via the Target-Normal-Sheath-Acceleration mechanism and initially separated by distances of a few hundred microns. The plasmas are accelerated from solid targets positioned inside a few cubic millimeter cavity located within a Helmholtz coil that provides up to 20 T magnetic fields. Various parameters of the plasmas at their interaction location are estimated. These show an interaction that is highly non-collisional, and that becomes more and more dominated by the magnetic fields as time progresses (from 5 to 60 ps). Particle-in-cell simulations are used to reproduce the initial acceleration of the plasma both via simulations including the laser interaction and via simulations that start with preheated electrons (to save dramatically on computational expense). The benchmarking of such simulations with the experiment and with each other will be used to understand the physical interaction when a magnetic field is applied. Finally, the experimental density profile of the interacting plasmas is shown in the case without an applied magnetic magnetic field, so to show that without an applied field that the development of high-velocity shocks, as a result of particle-to-particle collisions, is not achievable in the configuration considered. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Higginson, D. P.; Chen, S. N.; Riquier, R.; Fuchs, J.] Univ Paris 06, Lab Utilisat Lasers Intenses, Ecole Polytech, CNRS,CEA,UMR 7605, F-91128 Palaiseau, France.
[Korneev, Ph; d'Humieres, E.; Tikhonchuk, V.] Univ Bordeaux, CNRS, CEA, CELIA,UMR5107, F-33405 Talence, France.
[Korneev, Ph; Pikuz, S.] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia.
[Beard, J.] UJF, UPS, INSA, LNCMI,UPR 3228,CNRS, F-31400 Toulouse, France.
[Pepin, H.] INRS, EMT, Varennes, PQ J3X 1S2, Canada.
[Pikuz, S.] RAS, Joint Inst High Temp, Moscow 125412, Russia.
[Pollock, B.] Lawrence Livermore Natl Lab, Livermore, CA 94440 USA.
[Riquier, R.] CEA, DAM, DIF, F-91297 Arpajon, France.
RP Higginson, DP (reprint author), Univ Paris 06, Lab Utilisat Lasers Intenses, Ecole Polytech, CNRS,CEA,UMR 7605, F-91128 Palaiseau, France.
EM drew.higginson@polytechnique.edu
RI Fuchs, Julien/D-3450-2016; Higginson, Drew/G-5942-2016; Korneev,
Philipp/B-1138-2010
OI Fuchs, Julien/0000-0001-9765-0787; Higginson, Drew/0000-0002-7699-3788;
Korneev, Philipp/0000-0002-5042-2936
FU ANR Blanc Grant [12-BS09-025-01 SILAMPA]; Agence Nationale de la
Recherche [11-IDEX-0004-02]; U.S. Department of Energy by Lawrence
Livermore National Laboratory [DE-AC52-07NA27344]; RFBR foundation
[14-29-06099, 15-32-21121]; GENCI (Grand Equipement National de Calcul
Intensif) [2014-056129]
FX The authors thank S. Andrews, J. Bonlie, C. Bruns, R. C. Cauble, D.
Cloyne, R. Costa and the entire staff of the Titan Laser and the Jupiter
Laser facility for their support during the experimental preparation and
execution. Thanks goes to Dr. T. Vinci for development of the Neutrino
code [27] and advice on its use. This work was supported by ANR Blanc
Grant no 12-BS09-025-01 SILAMPA. This work was partly done within the
LABEX Plas@Par project and supported by Grant No. 11-IDEX-0004-02 from
Agence Nationale de la Recherche. This work was performed under the
auspices of the U.S. Department of Energy by Lawrence Livermore National
Laboratory under Contract DE-AC52-07NA27344. This work was granted
access to the HPC resources of CINES under the allocation 2014-056129
made by GENCI (Grand Equipement National de Calcul Intensif). S. Pikuz
acknowledge the support of RFBR foundation in the frame of projects
#14-29-06099 and #15-32-21121.
NR 27
TC 2
Z9 2
U1 3
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
EI 1878-0563
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD DEC
PY 2015
VL 17
SI SI
BP 190
EP 197
DI 10.1016/j.hedp.2014.11.007
PN A
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA CY7ES
UT WOS:000366571800030
ER
PT J
AU Di Stefano, CA
Malamud, G
Kuranz, CC
Klein, SR
Drake, RP
AF Di Stefano, C. A.
Malamud, G.
Kuranz, C. C.
Klein, S. R.
Drake, R. P.
TI Measurement of Richtmyer-Meshkov mode coupling under steady shock
conditions and at high energy density
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE Hydrodynamic instability; Laser; Richtmyer-Meshkov; Shock waves;
Laboratory experiments
ID RAYLEIGH-TAYLOR; NONLINEAR EVOLUTION; OMEGA-EP; INSTABILITY;
HYDRODYNAMICS; INTERFACE; DESIGN; GROWTH; SUPERNOVAE; FRONTS
AB We present experiments observing Richtmyer-Meshkov mode coupling and bubble competition in a system arising from well-characterized initial conditions and driven by a strong (Mach similar to 8) shock. These measurements and the analysis method developed to interpret them provide an important step toward the possibility of observing self-similarity under such conditions, as well as a general platform for performing and analyzing hydrodynamic instability experiments. A key feature of these experiments is that the shock is sustained sufficiently long that this nonlinear behavior occurs without decay of the shock velocity or other hydrodynamic properties of the system, which facilitates analysis and allows the results to be used in the study of analytic models. Published by Elsevier B.V.
C1 [Di Stefano, C. A.; Malamud, G.; Kuranz, C. C.; Klein, S. R.; Drake, R. P.] Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA.
[Di Stefano, C. A.] Los Alamos Natl Lab, Los Alamos, NM 87507 USA.
[Malamud, G.] Nucl Res Ctr Negev, Dept Phys, IL-84190 Beer Sheva, Israel.
RP Di Stefano, CA (reprint author), Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA.
EM gmalamud@gmail.com
RI Drake, R Paul/I-9218-2012;
OI Drake, R Paul/0000-0002-5450-9844; Di Stefano,
Carlos/0000-0001-6166-3519
FU NNSA-DS; National Laser User Facility Program [DE-NA0002032]; Laboratory
for Laser Energetics, University of Rochester by the NNSA/OICF
[DE-FC52-08NA28302]; U.S. Department of Energy through Los Alamos
National Laboratory [DE-AC52-06NA25396]; SC-OFES Joint Program in
High-Energy-Density Laboratory Plasmas [DE-NA0001840]
FX Experiments, analysis, and initial manuscript preparation were performed
by the University of Michigan under the funding of the NNSA-DS and
SC-OFES Joint Program in High-Energy-Density Laboratory Plasmas, grant
number DE-NA0001840, and by the National Laser User Facility Program,
grant number DE-NA0002032, and through the Laboratory for Laser
Energetics, University of Rochester by the NNSA/OICF under Cooperative
Agreement No. DE-FC52-08NA28302. Further editing of the manuscript was
supported by the U.S. Department of Energy through Los Alamos National
Laboratory under Contract DE-AC52-06NA25396."
NR 40
TC 1
Z9 1
U1 4
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
EI 1878-0563
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD DEC
PY 2015
VL 17
BP 263
EP 269
DI 10.1016/j.hedp.2015.09.001
PN B
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA CY7FE
UT WOS:000366573000006
ER
PT J
AU Yang, YF
Xu, WD
Neill, T
Hu, ZB
Wang, CH
Xiao, XH
Stock, SR
Guise, T
Yun, CO
Brendler, CB
Iozzo, RV
Seth, P
AF Yang, Yuefeng
Xu, Weidong
Neill, Thomas
Hu, Zebin
Wang, Chi-Hsiung
Xiao, Xianghui
Stock, Stuart R.
Guise, Theresa
Yun, Chae-Ok
Brendler, Charles B.
Iozzo, Renato V.
Seth, Prem
TI Systemic Delivery of an Oncolytic Adenovirus Expressing Decorin for the
Treatment of Breast Cancer Bone Metastases
SO HUMAN GENE THERAPY
LA English
DT Article
ID GROWTH-FACTOR-BETA; CADHERIN IN-VITRO; MEDIATED INHIBITION; TGF-BETA;
EXTRACELLULAR-MATRIX; CARCINOMA CELLS; AUTOPHAGY; ANGIOGENESIS;
RECEPTOR; MODEL
AB The development of novel therapies for breast cancer bone metastasis is a major unmet medical need. Toward that end, we have constructed an oncolytic adenovirus, Ad.dcn, and a nonreplicating adenovirus, Ad(E1-).dcn, both containing the human decorin gene. Our in vitro studies showed that Ad.dcn produced high levels of viral replication and the decorin protein in the breast tumor cells. Ad(E1-).dcn-mediated decorin expression in MDA-MB-231 cells downregulated the expression of Met, -catenin, and vascular endothelial growth factor A, all of which are recognized decorin targets and play pivotal roles in the progression of breast tumor growth and metastasis. Adenoviral-mediated decorin expression inhibited cell migration and induced mitochondrial autophagy in MDA-MB-231 cells. Mice bearing MDA-MB-231-luc skeletal metastases were systemically administered with the viral vectors, and skeletal tumor growth was monitored over time. The results of bioluminescence imaging and X-ray radiography indicated that Ad.dcn and Ad(E1-).dcn significantly inhibited the progression of bone metastases. At the terminal time point, histomorphometric analysis, micro-computed tomography, and bone destruction biomarkers showed that Ad.dcn and Ad(E1-).dcn reduced tumor burden and inhibited bone destruction. A nonreplicating adenovirus Ad(E1-).luc expressing the luciferase 2 gene had no significant effect on inhibiting bone metastases, and in several assays, Ad.dcn and Ad(E1-).dcn were better than Ad.luc, a replicating virus expressing the luciferase 2 gene. Our data suggest that adenoviral replication coupled with decorin expression could produce effective antitumor responses in a MDA-MB-231 bone metastasis model of breast cancer. Thus, Ad.dcn could potentially be developed as a candidate gene therapy vector for treating breast cancer bone metastases.
C1 [Yang, Yuefeng; Xu, Weidong; Seth, Prem] NorthShore Res Inst, Dept Med, Gene Therapy Program, Evanston, IL 60201 USA.
[Neill, Thomas; Iozzo, Renato V.] Thomas Jefferson Univ, Dept Pathol Anat & Cell Biol, Kimmel Canc Ctr, Philadelphia, PA 19107 USA.
[Neill, Thomas; Iozzo, Renato V.] Thomas Jefferson Univ, Canc Cell Biol & Signaling Program, Kimmel Canc Ctr, Philadelphia, PA 19107 USA.
[Hu, Zebin] Natl Inst Food & Drug Control, Div In Vitro Diagnost Reagents 1, Beijing, Peoples R China.
[Wang, Chi-Hsiung; Brendler, Charles B.] NorthShore Res Inst, Dept Surg, Evanston, IL 60201 USA.
[Xiao, Xianghui] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Stock, Stuart R.] Northwestern Univ, Dept Cell & Mol Biol, Chicago, IL 60611 USA.
[Guise, Theresa] Indiana Univ, Dept Med, Indianapolis, IN USA.
[Yun, Chae-Ok] Hanyang Univ, Dept Bioengn, Seoul 133791, South Korea.
RP Seth, P (reprint author), NorthShore Res Inst, Dept Med, Gene Therapy Program, 2650 Ridge Ave,Room B 652, Evanston, IL 60201 USA.
EM pseth@northshore.org
OI Yun, Chae-Ok/0000-0002-9466-4531; Iozzo, Renato/0000-0002-5908-5112
FU National Institutes of Health [R01CA12738, R01 CA39481, RO1 CA47282];
CTSA Pilot Award from NorthShore University HealthSystem; DOE Office of
Science [DE-AC02-06CH11357]
FX This work was funded in part by the National Institutes of Health Grants
R01CA12738 (P.S.) and R01 CA39481 and RO1 CA47282 (R.V.I.), and a CTSA
Pilot Award (P.S.) from NorthShore University HealthSystem. We are
thankful to an anonymous donor for generous philanthropic support. This
research used resources of the Advanced Photon Source, a U.S. Department
of Energy (DOE) Office of Science User Facility operated for the DOE
Office of Science by Argonne National Laboratory under Contract No.
DE-AC02-06CH11357. We are thankful to Janardan Khandekar, Theodore
Mazzone, Bruce Brockstein, and Michael Caplan for their continuous
support.
NR 59
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U1 2
U2 12
PU MARY ANN LIEBERT, INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 1043-0342
EI 1557-7422
J9 HUM GENE THER
JI Hum. Gene Ther.
PD DEC 1
PY 2015
VL 26
IS 12
BP 813
EP 825
DI 10.1089/hum.2015.098
PG 13
WC Biotechnology & Applied Microbiology; Genetics & Heredity; Medicine,
Research & Experimental
SC Biotechnology & Applied Microbiology; Genetics & Heredity; Research &
Experimental Medicine
GA CZ0YV
UT WOS:000366833500006
PM 26467629
ER
PT J
AU Sen, S
AF Sen, Satyabrata
TI Low-Rank Matrix Decomposition and Spatio-Temporal Sparse Recovery for
STAP Radar
SO IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING
LA English
DT Article
DE Convex relaxation; low-rank matrix; matrix shrinkage operator;
semidefinite program; space-time adaptive processing; sparse signal
processing; trace minimization problem
ID NONLINEAR DIMENSIONALITY REDUCTION; ADAPTIVE MATCHED-FILTER; AIRBORNE
RADAR; COVARIANCE-MATRIX; MINIMUM-RANK; KNOWLEDGE; OPTIMIZATION;
PERFORMANCE; SIGNAL; REPRESENTATION
AB We develop space-time adaptive processing (STAP) methods by leveraging the advantages of sparse signal processing techniques in order to detect a slowly-moving target. We observe that the inherent sparse characteristics of a STAP problem can be formulated as the low-rankness of clutter covariance matrix when compared to the total adaptive degrees-of-freedom, and also as the sparse interference spectrum on the spatio-temporal domain. By exploiting these sparse properties, we propose two approaches for estimating the interference covariance matrix. In the first approach, we consider a constrained matrix rank minimization problem (RMP) to decompose the sample covariance matrix into a low-rank positive semidefinite and a diagonal matrix. The solution of RMP is obtained by applying the trace minimization technique and the singular value decomposition with matrix shrinkage operator. Our second approach deals with the atomic norm minimization problem to recover the clutter response-vector that has a sparse support on the spatio-temporal plane. We use convex relaxation based standard sparse-recovery techniques to find the solutions. With extensive numerical examples, we demonstrate the performances of proposed STAP approaches with respect to both the ideal and practical scenarios, involving Doppler-ambiguous clutter ridges, spatial and temporal decorrelation effects. The low-rank matrix decomposition based solution requires secondary measurements as many as twice the clutter rank to attain a near-ideal STAP performance; whereas the spatio-temporal sparsity based approach needs a considerably small number of secondary data.
C1 [Sen, Satyabrata] Oak Ridge Natl Lab, Comp Sci & Math Div, Ctr Engn Syst Adv Res, Oak Ridge, TN 37831 USA.
RP Sen, S (reprint author), Oak Ridge Natl Lab, Comp Sci & Math Div, Ctr Engn Syst Adv Res, Oak Ridge, TN 37831 USA.
EM sens@ornl.gov
OI Sen, Satyabrata/0000-0001-9918-4409
FU U.S. Missile Defense Agency (MDA) at the Oak Ridge National Laboratory;
U.S. Department of Energy [DE-AC05-00OR22725]
FX This work was supported in part by the U.S. Missile Defense Agency (MDA)
at the Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for
the U.S. Department of Energy, under contract DE-AC05-00OR22725. The
United States Government retains and the publisher, by accepting the
article for publication, acknowledges that the United States Government
retains a non-exclusive, paid-up, irrevocable, world-wide license to
publish or reproduce the published form of this manuscript, or allow
others to do so, for United States Government purposes. The Department
of Energy will provide public access to these results of federally
sponsored research in accordance with the DOE Public Access Plan
(http://energy.gov/downloads/doe-public-access-plan). The guest editor
coordinating the review of this manuscript and approving it for
publication was Dr. Jean-Philippe Ovarlez.
NR 78
TC 4
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U1 5
U2 14
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1932-4553
EI 1941-0484
J9 IEEE J-STSP
JI IEEE J. Sel. Top. Signal Process.
PD DEC
PY 2015
VL 9
IS 8
BP 1510
EP 1523
DI 10.1109/JSTSP.2015.2464187
PG 14
WC Engineering, Electrical & Electronic
SC Engineering
GA CY5SD
UT WOS:000366466800014
ER
PT J
AU Bollinger, DS
Karns, PR
Tan, CY
AF Bollinger, Daniel S.
Karns, Patrick R.
Tan, Cheng-Yang
TI A Cookbook for Building a High-Current Dimpled H- Magnetron Source for
Accelerators
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Ion beams; ion sources; particle beams.
ID SURFACE PLASMA SOURCES
AB A high-current (>50 mA) dimpled H- magnetron source has been built at Fermilab for supplying H- beam to the entire accelerator complex. Despite many decades of expertise with slit H- magnetron sources at Fermilab, we were faced with many challenges from the dimpled H- magnetron source, which needed to be overcome in order to make it operational. Dimpled H- sources for high-energy physics are not new: Brookhaven National Laboratory has operated a dimpled H- source for more than two decades. However, the transference of that experience to Fermilab took about two years because a cookbook for building this type of source did not exist and seemingly innocuous or undocumented choices had a huge impact on the success or failure for this type of source. Therefore, it is the goal of this paper to document the reasons for these choices and to present a cookbook for building and operating dimpled H- magnetron sources.
C1 [Bollinger, Daniel S.; Karns, Patrick R.; Tan, Cheng-Yang] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Bollinger, DS (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM bollinger@fnal.gov; karns@fnal.gov; cytan@fnal.gov
FU Fermi National Accelerator Laboratory, Office of Science, Fermi Research
Alliance, LLC, within the U.S. Department of Energy [DE-AC02-07CH11359]
FX This work was supported by the Fermi National Accelerator Laboratory,
Office of Science, Fermi Research Alliance, LLC, within the U.S.
Department of Energy, under Contract DE-AC02-07CH11359.
NR 20
TC 0
Z9 0
U1 1
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD DEC
PY 2015
VL 43
IS 12
BP 4110
EP 4122
DI 10.1109/TPS.2015.2491266
PN 2
PG 13
WC Physics, Fluids & Plasmas
SC Physics
GA CY5TN
UT WOS:000366470500007
ER
PT J
AU Ekdahl, C
AF Ekdahl, Carl
TI Electron-Beam Dynamics for an Advanced Flash-Radiography Accelerator
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Electron beam instabilities; flash radiography; linear induction
accelerator (LIA).
ID LINEAR INDUCTION ACCELERATOR; DIOCOTRON INSTABILITY
AB Beam dynamics issues were assessed for a new linear induction electron accelerator being designed for multipulse flash radiography of large explosively driven hydrodynamic experiments. Special attention was paid to equilibrium beam transport, possible emittance growth, and beam stability. Especially problematic would be high-frequency beam instabilities that could blur individual radiographic source spots, lowfrequency beam motion that could cause pulse-to-pulse spot displacement, and emittance growth that could enlarge the source spots. Beam physics issues were examined through theoretical analysis and computer simulations, including particle-in-cell codes. Beam instabilities investigated included beam breakup, image displacement, diocotron, parametric envelope, ion hose, and the resistive wall instability. Beam corkscrew motion and emittance growth from beam mismatch were also studied. It was concluded that a beam with radiographic quality equivalent to the present accelerators at Los Alamos National Laboratory will result if the same engineering standards and construction details are upheld.
C1 [Ekdahl, Carl] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Ekdahl, C (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM cekdahl@lanl.gov
FU National Nuclear Security Administration of the U. S. Department of
Energy [DE-AC52-06NA25396]
FX This work was supported by the National Nuclear Security Administration
of the U. S. Department of Energy under Contract DE-AC52-06NA25396.
NR 32
TC 1
Z9 1
U1 1
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD DEC
PY 2015
VL 43
IS 12
BP 4123
EP 4129
DI 10.1109/TPS.2015.2496499
PN 2
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA CY5TN
UT WOS:000366470500008
ER
PT J
AU Elizondo-Decanini, JM
Coleman, D
Moorman, M
Petney, S
Dudley, E
Youngman, K
Penner, T
Fang, L
Myers, K
AF Elizondo-Decanini, Juan M.
Coleman, Dale
Moorman, Matthew
Petney, Sharon
Dudley, Evan
Youngman, Kevin
Penner, Tim
Fang, Lu
Myers, Kathy
TI Soliton Production With Nonlinear Homogeneous Lines
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Capacitors; diodes; n-p junction; nonlinear; solitons; transmission
lines.
ID TRANSMISSION-LINES; GENERATION
AB Low- and high-voltage Soliton waves were produced and used to demonstrate collision and compression using diodebased nonlinear transmission lines. Experiments demonstrate soliton addition and compression using homogeneous nonlinear lines. The nonlinear lines were built using commercially available diodes. These diodes are chosen after their capacitance versus voltage dependence is used in a model and the line design characteristics are calculated and simulated. Nonlinear ceramic capacitors are then used to demonstrate high-voltage pulse amplification and compression. The line is designed such that a simple capacitor discharge, input signal, develops soliton trains in as few as 12 stages. We demonstrated output voltages in excess of 40 kV using Y5V-based commercial capacitors. The results show some key features that determine efficient production of trains of solitons in the kilovolt range.
C1 [Elizondo-Decanini, Juan M.; Coleman, Dale; Moorman, Matthew; Petney, Sharon; Dudley, Evan; Youngman, Kevin; Penner, Tim; Fang, Lu; Myers, Kathy] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Elizondo-Decanini, JM (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM jmelizo@sandia.gov; pdcolem@sandia.gov; mmoorma@sandia.gov;
svpetne@sandia.gov; ecdudle@sandia.gov; kyoungm@sandia.gov;
tdpenne@sandia.gov; lfang@sandia.gov; kmyers@sandia.gov
FU Sandia National Laboratories, National Nuclear Security Administration
through the Laboratory Directed Research and Development office
FX This work was supported by Sandia National Laboratories, National
Nuclear Security Administration through the Laboratory Directed Research
and Development office.
NR 13
TC 1
Z9 1
U1 2
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD DEC
PY 2015
VL 43
IS 12
BP 4136
EP 4142
DI 10.1109/TPS.2015.2497233
PN 2
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA CY5TN
UT WOS:000366470500010
ER
PT J
AU Jia, XH
Chen, ZY
Riedel, A
Si, T
Hamel, WR
Zhang, MJ
AF Jia, Xinghua
Chen, Zongyao
Riedel, Andrew
Si, Ting
Hamel, William R.
Zhang, Mingjun
TI Energy-Efficient Surface Propulsion Inspired by Whirligig Beetles
SO IEEE TRANSACTIONS ON ROBOTICS
LA English
DT Article
DE Bioinspired swimming robot; energy-efficient; propulsion
ID ROBOT; FIN
AB The whirligig beetle, claimed to be one of the most energy-efficient swimmers in the animal kingdom, has evolved a series of propulsion strategies that may serve as a source of inspiration for the design of propulsion mechanisms for energy-efficient surface swimming. In this paper, we introduce a robot platform that was developed to test an energy-efficient propulsion mechanism inspired by the whirligig beetle. A propulsor-body-fluid interaction dynamics model is proposed, and based on this model, the propulsor flexural rigidity and beating patterns are optimized in order to achieve energy-efficient linear swimming and turning. The optimization results indicate that a propulsor with decreasing flexural rigidity enhances vortex shedding and improves thrust generation. It has also been found that an alternating asymmetrical beating sequence and optimal beating frequency of 0.71 Hz improves propulsion efficiency for linear swimming of the robot. The alternating beating of the outboard propulsors and the unfolded inboard propulsors working as brakes results in efficient turning with a smaller turning radius. Both simulation and experimental studies were conducted, and the results illustrate that decreasing flexural rigidity along the propulsor length, an oscillating body motion, and an S-shaped trajectory are critical for energy-efficient propulsion of the robot.
C1 [Jia, Xinghua; Zhang, Mingjun] Ohio State Univ, Dept Biomed Engn, Columbus, OH 43210 USA.
[Jia, Xinghua; Zhang, Mingjun] Ohio State Univ, Dorothy M Davis Heart & Lung Res Inst, Columbus, OH 43210 USA.
[Chen, Zongyao; Hamel, William R.] Univ Tennessee, Dept Mech Aerosp & Biomed Engn, Knoxville, TN 37996 USA.
[Chen, Zongyao] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Riedel, Andrew] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA.
[Si, Ting] Univ Sci & Technol China, Dept Modern Mech, Hefei 230026, Peoples R China.
[Si, Ting] Univ Sci & Technol China, Ctr Biomed Engn, Hefei 230026, Peoples R China.
RP Jia, XH (reprint author), Ohio State Univ, Dept Biomed Engn, Columbus, OH 43210 USA.
EM jia.243@osu.edu; zchen25@utk.edu; ariedel@utk.edu; tsi@ustc.edu.cn;
whamel@ibme.utk.edu; zhang.4882@osu.edu
FU Office of Naval Research Young Investigator Program Award
[ONR-N00014-11-1-0622]
FX This paper was recommended for publication by Associate Editor I. H. Suh
and Editor B. J. Nelson upon evaluation of the reviewers' comments. This
work was supported by the Office of Naval Research Young Investigator
Program Award (ONR-N00014-11-1-0622) under supervision of Dr. T.
McKenna.
NR 20
TC 1
Z9 1
U1 6
U2 14
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1552-3098
EI 1941-0468
J9 IEEE T ROBOT
JI IEEE Trans. Robot.
PD DEC
PY 2015
VL 31
IS 6
BP 1432
EP 1443
DI 10.1109/TRO.2015.2493501
PG 12
WC Robotics
SC Robotics
GA CY8MR
UT WOS:000366663300013
ER
PT J
AU Lu, IT
Hsieh, YC
Chen, PC
Wu, PW
AF Lu, I-Te
Hsieh, Yu-Chi
Chen, Po-Chun
Wu, Pu-Wei
TI EQCM Study on Pulse Current Pt Electrodeposition
SO INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
LA English
DT Article
DE Pulse Current Electrodeposition; EQCM; Platinum; Electrodeposition
Efficiency
ID QUARTZ-CRYSTAL MICROBALANCE; PLATINUM NANOPARTICLES; OXYGEN REDUCTION;
ELECTROCATALYTIC OXIDATION; CATALYTIC-ACTIVITY; FUEL-CELLS; ADSORPTION;
DEPOSITION; AU(111); CARBON
AB Electrochemical Quartz Crystal Microbalance (EQCM) was used to investigate the events occurring during current-on (T-on) and current-off (T-off) for pulse current electrodeposition of Pt in both air and Ar atmospheres. The EQCM profiles indicated a transient mass loss when the current was turned on, followed by a linear mass gain associated with the Pt electrodeposition from the H2PtCl6 plating bath. During the T-off, the mass revealed a steady increase until it leveled off after 10 sec. The minute transient mass loss during the initial stage of T-on was attributed to the reduction of the adsorbed PtCl62- whereas the mass gain during the T-off was due to the absorption of PtCl62- onto the freshly-deposited Pt surface. In air atmosphere, the parasitic oxygen reduction reaction consumed part of the reduction current and thus, reduced the Pt plating efficiency by 6%. In addition, smaller mass gains during T-off and T-on were observed for the Pt plating in air atmosphere.
C1 [Lu, I-Te; Chen, Po-Chun; Wu, Pu-Wei] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan.
[Hsieh, Yu-Chi] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Chen, Po-Chun] Natl Chiao Tung Univ, Biomed Elect Translat Res Ctr, Hsinchu 30010, Taiwan.
RP Lu, IT (reprint author), Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan.
EM pcchen@g2.nctu.edu.tw; ppwu@mail.nctu.edu.tw
FU Taiwan Ministry of Science and Technology [MOST-104-2220-E-009-005];
National Chiao Tung University; Ministry of Education, Taiwan, R.O.C.
FX This work was fully supported by the Taiwan Ministry of Science and
Technology under grant numbers (MOST-104-2220-E-009-005), and in part by
"Aim for the Top University Plan" of the National Chiao Tung University
and Ministry of Education, Taiwan, R.O.C.
NR 45
TC 0
Z9 0
U1 9
U2 27
PU ESG
PI BELGRADE
PA BORIVOJA STEVANOVICA 25-7, BELGRADE, 11000, SERBIA
SN 1452-3981
J9 INT J ELECTROCHEM SC
JI Int. J. Electrochem. Sci.
PD DEC
PY 2015
VL 10
IS 12
BP 10199
EP 10209
PG 11
WC Electrochemistry
SC Electrochemistry
GA CY3KA
UT WOS:000366307100034
ER
PT J
AU Bonfils, CJW
Santer, BD
Phillips, TJ
Marvel, K
Leung, LR
Doutriaux, C
Capotondi, A
AF Bonfils, Celine J. W.
Santer, Benjamin D.
Phillips, Thomas J.
Marvel, Kate
Leung, L. Ruby
Doutriaux, Charles
Capotondi, Antonietta
TI Relative Contributions of Mean-State Shifts and ENSO-Driven Variability
to Precipitation Changes in a Warming Climate
SO JOURNAL OF CLIMATE
LA English
DT Article
DE Circulation; Dynamics; ENSO; Atm; Ocean Structure; Phenomena;
Precipitation; Physical Meteorology and Climatology; Climate change;
Regional effects; Models and modeling; General circulation models;
Variability; Climate variability
ID GENERAL-CIRCULATION MODELS; MADDEN-JULIAN OSCILLATION; EL-NINO
TELECONNECTIONS; PACIFIC-OCEAN; INDO-PACIFIC; GLOBAL PRECIPITATION;
NORTH-AMERICA; UNITED-STATES; PATTERNS; EVENTS
AB El Nino-Southern Oscillation (ENSO) is an important driver of regional hydroclimate variability through far-reaching teleconnections. This study uses simulations performed with coupled general circulation models (CGCMs) to investigate how regional precipitation in the twenty-first century may be affected by changes in both ENSO-driven precipitation variability and slowly evolving mean rainfall. First, a dominant, time-invariant pattern of canonical ENSO variability (cENSO) is identified in observed SST data. Next, the fidelity with which 33 state-of-the-art CGCMs represent the spatial structure and temporal variability of this pattern (as well as its associated precipitation responses) is evaluated in simulations of twentieth-century climate change. Possible changes in both the temporal variability of this pattern and its associated precipitation teleconnections are investigated in twenty-first-century climate projections. Models with better representation of the observed structure of the cENSO pattern produce winter rainfall teleconnection patterns that are in better accord with twentieth-century observations and more stationary during the twenty-first century. Finally, the model-predicted twenty-first-century rainfall response to cENSO is decomposed into the sum of three terms: 1) the twenty-first-century change in the mean state of precipitation, 2) the historical precipitation response to the cENSO pattern, and 3) a future enhancement in the rainfall response to cENSO, which amplifies rainfall extremes. By examining the three terms jointly, this conceptual framework allows the identification of regions likely to experience future rainfall anomalies that are without precedent in the current climate.
C1 [Bonfils, Celine J. W.; Santer, Benjamin D.; Phillips, Thomas J.; Marvel, Kate; Doutriaux, Charles] Lawrence Livermore Natl Lab, Program Climate Model Diag & Intercomparison, Livermore, CA 94550 USA.
[Leung, L. Ruby] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Capotondi, Antonietta] Univ Colorado, Boulder, CO 80309 USA.
[Capotondi, Antonietta] NOAA, Earth Syst Res Lab, Boulder, CO USA.
RP Bonfils, CJW (reprint author), Lawrence Livermore Natl Lab, Program Climate Model Diag & Intercomparison, POB 808,Mail Stop L-103, Livermore, CA 94550 USA.
EM bonfils2@llnl.gov
RI Santer, Benjamin/F-9781-2011
FU Climate and Environmental Sciences Division (CESD); Regional and Global
Climate Modeling (RGCM) Program of the U.S. Department of Energy (DOE)
Office of Science; U.S. DOE Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Laboratory Directed Research and Development award
[13-ERD-032]; DOE/OBER Early Career Research Program [SCW1295]
FX We acknowledge the World Climate Research Programme's Working Group on
Coupled Modelling, which is responsible for CMIP, and we thank the
climate modeling groups (listed in Table S1 of this paper) for producing
and making available their model output. For CMIP the U.S. Department of
Energy's Program for Climate Model Diagnosis and Intercomparison
provides coordinating support and led development of software
infrastructure in partnership with the Global Organization for Earth
System Science Portals. CMIP5 data processing was enabled by the CDAT
analysis package. A. Dai (University at Albany) calculated the second PC
of the PDSI dataset (as in Fig. 2d). This work was supported by the
Climate and Environmental Sciences Division (CESD) and the Regional and
Global Climate Modeling (RGCM) Program of the U.S. Department of Energy
(DOE) Office of Science and was performed under the auspices of the U.S.
DOE Lawrence Livermore National Laboratory (Contract DE-AC52-07NA27344).
K.M. was supported by a Laboratory Directed Research and Development
award (13-ERD-032). C.B. was fully supported by the DOE/OBER Early
Career Research Program Award SCW1295. We thank our three reviewers for
their very helpful and constructive comments, which have substantially
improved our paper.
NR 56
TC 3
Z9 3
U1 3
U2 26
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
EI 1520-0442
J9 J CLIMATE
JI J. Clim.
PD DEC
PY 2015
VL 28
IS 24
BP 9997
EP 10013
DI 10.1175/JCLI-D-15-0341.1
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CY9IO
UT WOS:000366720800027
ER
PT J
AU Garcia, IG
Howe, K
March-Russell, J
AF Garcia, Isabel Garcia
Howe, Kiel
March-Russell, John
TI Natural Scherk-Schwarz theories of the weak scale
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Supersymmetry Phenomenology; Phenomenology of Field Theories in Higher
Dimensions
ID SUPERSYMMETRIC STANDARD MODEL; KALUZA-KLEIN THEORIES; HIGGS MASS;
ELECTROWEAK BREAKING; BROKEN SUPERSYMMETRY; RADION STABILIZATION;
DIMENSIONAL ANALYSIS; SYMMETRY-BREAKING; EXTRA DIMENSIONS; PP COLLISIONS
AB Natural supersymmetric theories of the weak scale are under growing pressure given present LHC constraints, raising the question of whether untuned supersymmetric (SUSY) solutions to the hierarchy problem are possible. In this paper, we explore a class of 5-dimensional natural SUSY theories in which SUSY is broken by the Scherk-Schwarz mechanism. We pedagogically explain how Scherk-Schwarz elegantly solves the traditional problems of 4-dimensional SUSY theories (based on the MSSM and its many variants) that usually result in an unsettling level of fine-tuning. The minimal Scherk-Schwarz set up possesses novel phenomenology, which we briefly outline. We show that achieving the observed physical Higgs mass motivates extra structure that does not significantly affect the level of tuning (always better than similar to 10%) and we explore three qualitatively different extensions: the addition of extra matter that couples to the Higgs, an extra U(1)' gauge group under which the Higgs is charged and an NMSSM-like solution to the Higgs mass problem.
C1 [Garcia, Isabel Garcia; March-Russell, John] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England.
[Howe, Kiel] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Howe, Kiel; March-Russell, John] Stanford Univ, Dept Phys, Stanford Inst Theoret Phys, Stanford, CA 94305 USA.
RP Garcia, IG (reprint author), Univ Oxford, Rudolf Peierls Ctr Theoret Phys, 1 Keble Rd, Oxford OX1 3NP, England.
EM isabel.garciagarcia@physics.ox.ac.uk; khowe@fnal.gov;
jmr@thphys.ox.ac.uk
OI Garcia Garcia, Isabel/0000-0001-8866-7376; Howe,
Kiel/0000-0001-5044-6041
FU STFC/EPSRC; University of Oxford; NSF [PHY-1316706, DGE-0645962]; United
States Department of Energy [DE-AC02-07CH11359]
FX We thank M. Baryakhtar, J. Huang, J. Scoville, T. Cohen, D. Pinner and,
especially, Savas Dimopoulos for discussions. The authors thank the CERN
Theory Group and (IGG and JMR) the Stanford Institute for Theoretical
Physics for hospitality during portions of this work. IGG is financially
supported by the STFC/EPSRC and a Scatcherd European Scholarship from
the University of Oxford. KH acknowledges support from NSF grant
PHY-1316706 and an NSF Graduate Research Fellowship under Grant number
DGE-0645962. Fermilab is operated by Fermi Research Alliance, LLC under
Contract No. DE-AC02-07CH11359 with the United States Department of
Energy.
NR 130
TC 6
Z9 6
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1029-8479
J9 J HIGH ENERGY PHYS
JI J. High Energy Phys.
PD DEC 1
PY 2015
IS 12
AR 005
DI 10.1007/JHEP12(2015)005
PG 47
WC Physics, Particles & Fields
SC Physics
GA CY5YQ
UT WOS:000366484200001
ER
PT J
AU Cushman, JH
O'Malley, D
AF Cushman, John H.
O'Malley, Dan
TI Fickian dispersion is anomalous
SO JOURNAL OF HYDROLOGY
LA English
DT Article
DE Non-Fickian; Anomalous; Transport; Scaling; Renormalization
ID FRACTIONAL BROWNIAN-MOTION; POROUS-MEDIA; DIFFUSION; TRANSPORT;
PERSPECTIVE; DYNAMICS; AQUIFERS
AB The thesis put forward here is that the occurrence of Fickian dispersion in geophysical settings is a rare event and consequently should be labeled as anomalous. What people classically call anomalous is really the norm. In a Lagrangian setting, a process with mean square displacement which is proportional to time is generally labeled as Fickian dispersion. With a number of counter examples we show why this definition is fraught with difficulty. In a related discussion, we show an infinite second moment does not necessarily imply the process is super dispersive. By employing a rigorous mathematical definition of Fickian dispersion we illustrate why it is so hard to find a Fickian process. We go on to employ a number of renormalization group approaches to classify non-Fickian dispersive behavior. Scaling laws for the probability density function for a dispersive process, the distribution for the first passage times, the mean first passage time, and the finite-size Lyapunov exponent are presented for fixed points of both deterministic and stochastic renormalization group operators. The fixed points of the renormalization group operators are p-self-similar processes. A generalized renormalization group operator is introduced whose fixed points form a set of generalized self-similar processes. Power-law clocks are introduced to examine multi-scaling behavior. Several examples of these ideas are presented and discussed. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Cushman, John H.] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA.
[Cushman, John H.] Purdue Univ, Dept Math, W Lafayette, IN 47907 USA.
[O'Malley, Dan] Los Alamos Natl Lab, Computat Earth Sci, Los Alamos, NM USA.
RP Cushman, JH (reprint author), Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA.
EM jcushman@purdue.edu; omalled@lanl.gov
OI O'Malley, Daniel/0000-0003-0432-3088
FU NSF [EAR1314828]
FX JHC acknowledges NSF for support through contract #EAR1314828.
NR 25
TC 6
Z9 6
U1 1
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1694
EI 1879-2707
J9 J HYDROL
JI J. Hydrol.
PD DEC
PY 2015
VL 531
SI SI
BP 161
EP 167
DI 10.1016/j.jhydrol.2015.06.036
PN 1
PG 7
WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
SC Engineering; Geology; Water Resources
GA CZ0BD
UT WOS:000366769200015
ER
PT J
AU Campos, E
Wang, JL
AF Campos, Edwin
Wang, Jiali
TI Numerical simulation and analysis of the April 2013 Chicago Floods
SO JOURNAL OF HYDROLOGY
LA English
DT Article
DE Chicago; Floods; Atmospheric rivers; WRF; Radar
ID EXTREME PRECIPITATION EVENTS; FORECASTING WRF MODEL; CLOUD MICROPHYSICS;
ATMOSPHERIC RIVERS; UNITED-STATES; CONVECTIVE PARAMETERIZATION; EXPLICIT
FORECASTS; WEATHER RESEARCH; HEAVY RAINFALL; NORTH-AMERICA
AB The weather event associated to record Chicago floods on April 2013 is investigated by using the Weather Research and Forecasting (WRF) model. Observations at Argonne National Laboratory and multi-sensor (weather radar and rain gauge) precipitation data from the National Weather Service were employed to evaluate the model's performance. The WRF model captured the synoptic-scale atmospheric features well, but the simulated 24-h accumulated precipitation and short-period temporal evolution of precipitation over the heavy-rain region were less successful. To investigate the potential reasons for the model bias, four supplementary sensitivity experiments using various microphysics schemes and cumulus parameterizations were designed. Of the five tested parameterizations, the WRF Single-Moment 6-class (WSM6) graupel scheme and Kain-Fritsch (KF) cumulus parameterization outperformed the others, such as Grell-Devenyi (GD) cumulus parameterization, which underestimated the precipitation by 30-50% on a regional-average scale. Morrison microphysics and KF outperformed the others for the spatial patterns of 24-h accumulated precipitation. The spatial correlation between observation and Morrison-KF was 0.45, higher than those for other simulations. All of the simulations underestimated the precipitation over northeastern Illinois (especially at Argonne) during 0400-0800 UTC 18 April because of weak ascending motion or small moisture. All of the simulations except WSM6-GD also underestimated the precipitation during 1200-1600 UTC 18 April because of weak southerly flow. (C) 2015 UChicago Argonne, LLC, Operator of Argonne National Laboratory. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
C1 [Campos, Edwin; Wang, Jiali] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Campos, E (reprint author), Argonne Natl Lab, GSS EESA, 9700 South Cass Ave,Bldg 221, Argonne, IL 60439 USA.
EM ecampos@anl.gov
FU U.S. Department of Energy (DOE) [DE-AC02-06CH11357]; Argonne, a U.S.
Department of Energy Office of Science laboratory [DE-AC02-06CH11357]
FX This work was supported under U.S. Department of Energy (DOE) Contract
DE-AC02-06CH11357. The numerical simulations were performed on the
DOE-supported supercomputing clusters of the National Energy Research
Scientific Computing Center and the Argonne Leadership Computing
Facility. The authors thank Dr. Jonathan Helmus of Argonne National
Laboratory for providing Fig. 2.; The submitted manuscript has been
created by UChicago Argonne, LLC, Operator of Argonne National
Laboratory ("Argonne"). Argonne, a U.S. Department of Energy Office of
Science laboratory, is operated under Contract No. DE-AC02-06CH11357.
The U.S. Government retains for itself, and others acting on its behalf,
a paid-up nonexclusive, irrevocable worldwide license in said article to
reproduce, prepare derivative works, distribute copies to the public,
and perform publicly and display publicly, by or on behalf of the
Government.
NR 51
TC 0
Z9 0
U1 3
U2 11
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1694
EI 1879-2707
J9 J HYDROL
JI J. Hydrol.
PD DEC
PY 2015
VL 531
SI SI
BP 454
EP 474
DI 10.1016/j.jhydrol.2015.09.004
PN 2
PG 21
WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
SC Engineering; Geology; Water Resources
GA CZ0BF
UT WOS:000366769400018
ER
PT J
AU Buja, F
Kokorian, J
Gulotty, R
Sumant, AV
van Spengen, WM
AF Buja, Federico
Kokorian, Jaap
Gulotty, Richard
Sumant, Anirudha V.
van Spengen, W. Merlijn
TI Observation of a carbon-based protective layer on the sidewalls of boron
doped ultrananocrystalline diamond-based MEMS during in situ tribotests
SO JOURNAL OF MICROMECHANICS AND MICROENGINEERING
LA English
DT Article
DE MEMS; tribology; ultrananocrystalline; diamond; friction; wear
ID FRICTION; NANOSCALE; WEAR; LUBRICATION; TRIBOLOGY; DEVICES; FILMS
AB We have fabricated dedicated MEMS tribotesters made from boron doped ultrananocrystalline diamond (B-UNCD) as the structural material, and carried out comprehensive nano-tribological measurements when two B-UNCD sidewall surfaces underwent sliding interaction in a micro-electromechanical systems (MEMS) in a humid and dry atmosphere. We have investigated the evolution of tribological contacts during sliding interactions and corresponding surface modification under repeated cyclic sliding conditions, while measuring displacement and lateral force with 4 nm and 64 nN resolution, respectively. We have observed the formation of carbon-based ultra-thin protective layer at the sliding interface as characterized by Raman spectroscopy and scanning electron microscopy. Interestingly, the formation of this protective layer occurs in both a dry and wet atmosphere, albeit at different rates when the energy dissipated due to friction reaches a plateau, starting from 200 000 and 400 000 cycles, respectively. Once this layer is formed, we do not observe any measurable wear indicating stable operation for an extended time period. Our results demonstrate that B-UNCD is a very promising material to overcome the wear-related reliability problems in MEMS.
C1 [Buja, Federico; Kokorian, Jaap; van Spengen, W. Merlijn] Delft Univ Technol, Delft, Netherlands.
[Gulotty, Richard; Sumant, Anirudha V.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[van Spengen, W. Merlijn] Falco Syst, Amsterdam, Netherlands.
RP Buja, F (reprint author), Delft Univ Technol, Delft, Netherlands.
EM f.buja@tudelft.nl
FU Dutch funding agency NWO-STW in 'vidi' program [10771]; U.S. Department
of Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]
FX This work was sponsored by the Dutch funding agency NWO-STW in the
'vidi' program under ref no. 10771.; Use of the Center for Nanoscale
materials was supported by the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357.
NR 34
TC 0
Z9 0
U1 3
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0960-1317
EI 1361-6439
J9 J MICROMECH MICROENG
JI J. Micromech. Microeng.
PD DEC
PY 2015
VL 25
IS 12
AR 125020
DI 10.1088/0960-1317/25/12/125020
PG 15
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Instruments & Instrumentation; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Instruments &
Instrumentation; Physics
GA CZ1LX
UT WOS:000366868400023
ER
PT J
AU Xiao, J
Ye, ZL
Wang, Y
Zhu, HY
Wang, Y
Zhang, X
AF Xiao, Jun
Ye, Ziliang
Wang, Ying
Zhu, Hanyu
Wang, Yuan
Zhang, Xiang
TI Nonlinear optical selection rule based on valley-exciton locking in
monolayer ws(2)
SO LIGHT-SCIENCE & APPLICATIONS
LA English
DT Article
DE nonlinear optical selection rule; 2D materials; 2p-1s exciton
relaxation; valley exciton
ID LAYER MOS2; POLARIZATION; GENERATION; DISULFIDE; CRYSTALS; SPIN
AB Optical selection rules fundamentally determine the optical transitions between energy states in a variety of physical systems, from hydrogen atoms to bulk crystals such as gallium arsenide. These rules are important for optoelectronic applications such as lasers, energy-dispersive X-ray spectroscopy, and quantum computation. Recently, single-layer transition metal dichalcogenides have been found to exhibit valleys in momentum space with nontrivial Berry curvature and excitons with large binding energy. However, there has been little study of how the unique valley degree of freedom combined with the strong excitonic effect influences the nonlinear optical excitation. Here, we report the discovery of nonlinear optical selection rules in monolayer WS2, an important candidate for visible 2D optoelectronics because of its high quantum yield and large direct bandgap. We experimentally demonstrated this principle for second-harmonic generation and two-photon luminescence (TPL). Moreover, the circularly polarized TPL and the study of its dynamics evince a sub-ps interexciton relaxation (2p -> 1s). The discovery of this new optical selection rule in a valleytronic 2D system not only considerably enhances knowledge in this area but also establishes a foundation for the control of optical transitions that will be crucial for valley optoelectronic device applications such as 2D valley-polarized THz sources with 2p-1s transitions, optical switches, and coherent control for quantum computing.
C1 [Xiao, Jun; Ye, Ziliang; Wang, Ying; Zhu, Hanyu; Wang, Yuan; Zhang, Xiang] Univ Calif Berkeley, NSF Nanoscale Sci & Engn Ctr NSEC, Berkeley, CA 94720 USA.
[Wang, Yuan; Zhang, Xiang] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Zhang, Xiang] King Abdulaziz Univ, Dept Phys, Jeddah 21413, Saudi Arabia.
RP Zhang, X (reprint author), Univ Calif Berkeley, NSF Nanoscale Sci & Engn Ctr NSEC, Berkeley, CA 94720 USA.
EM xiang@berkeley.edu
RI Zhang, Xiang/F-6905-2011; Wang, Yuan/F-7211-2011
FU "Light-Material Interactions in Energy Conversion" Energy Frontier
Research Center - U.S. Department of Energy, Office of Science, Office
of Basic Energy Sciences [DE-AC02-05CH11231]
FX This work was supported by the "Light-Material Interactions in Energy
Conversion" Energy Frontier Research Center funded by the U.S.
Department of Energy, Office of Science, Office of Basic Energy Sciences
under Award Number DE-AC02-05CH11231.
NR 34
TC 4
Z9 4
U1 8
U2 40
PU CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS
PI CHANGCHUN
PA 3888, DONGNANHU ROAD, CHANGCHUN, 130033, PEOPLES R CHINA
SN 2047-7538
J9 LIGHT-SCI APPL
JI Light-Sci. Appl.
PD DEC
PY 2015
VL 4
AR e366
DI 10.1038/lsa.2015.139
PG 6
WC Optics
SC Optics
GA CY9KQ
UT WOS:000366726200004
ER
PT J
AU Sinclair, CW
Martin, G
Lebensohn, RA
AF Sinclair, C. W.
Martin, G.
Lebensohn, R. A.
TI Factors contributing to plastic strain amplification in slip dominated
deformation of magnesium alloys
SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
LA English
DT Article
DE plasticity; crystal plasticity; modelling; magnesium; heterogeneity
ID COMMERCIAL PURITY TITANIUM; RARE-EARTH; GRAIN-BOUNDARIES; COLUMNAR ICE;
MG ALLOYS; HETEROGENEITIES; POLYCRYSTALS; DUCTILITY; BEHAVIOR; TEXTURE
AB While plastic strains are never distributed uniformly in polycrystals, it has recently been shown experimentally that the distribution can be extremely heterogeneous in magnesium polycrystals even when the deformation is dominated by slip. Here, we attempt to provide insight into the (macroscopic) factors that contribute to this strain amplification and to explain, from a local perspective, the origins of this strain amplification. To do this, full field VPFFT crystal plasticity simulations have been performed under the simplifying assumption that twinning is inoperative. It is shown that the experimentally observed heterogeneity can be reproduced when a sufficiently high anisotropy in slip system strength is assumed. This can be further accentuated by a weakening of the texture.
C1 [Sinclair, C. W.] Univ British Columbia, Dept Mat Engn, Vancouver, BC V5Z 1M9, Canada.
[Martin, G.] Univ Grenoble Alpes, SIMAP, F-38000 Grenoble, France.
[Martin, G.] CNRS, SIMAP, F-38000 Grenoble, France.
[Lebensohn, R. A.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87544 USA.
RP Sinclair, CW (reprint author), Univ British Columbia, Dept Mat Engn, 309-6350 Stores Rd, Vancouver, BC V5Z 1M9, Canada.
EM chad.sinclair@ubc.ca
RI Lebensohn, Ricardo/A-2494-2008; Sinclair, Chad/O-5744-2016
OI Lebensohn, Ricardo/0000-0002-3152-9105; Sinclair,
Chad/0000-0002-6465-6952
FU NSERC-Canada through the MagNET Strategic Research Network
FX The authors wish to express their gratitude to NSERC-Canada for the
financial support of this work through the MagNET Strategic Research
Network.
NR 28
TC 0
Z9 0
U1 1
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0965-0393
EI 1361-651X
J9 MODEL SIMUL MATER SC
JI Model. Simul. Mater. Sci. Eng.
PD DEC
PY 2015
VL 23
IS 8
AR 085002
DI 10.1088/0965-0393/23/8/085002
PG 17
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA CZ0LM
UT WOS:000366796400004
ER
PT J
AU Zhao, H
Wei, Y
Qiao, RM
Zhu, CH
Zheng, ZY
Ling, M
Jia, Z
Bai, Y
Fu, YB
Lei, JL
Song, XY
Battaglia, VS
Yang, WL
Messersmith, PB
Liu, G
AF Zhao, Hui
Wei, Yang
Qiao, Ruimin
Zhu, Chenhui
Zheng, Ziyan
Ling, Min
Jia, Zhe
Bai, Ying
Fu, Yanbao
Lei, Jinglei
Song, Xiangyun
Battaglia, Vincent S.
Yang, Wanli
Messersmith, Phillip B.
Liu, Gao
TI Conductive Polymer Binder for High-Tap-Density Nanosilicon Material for
Lithium-Ion Battery Negative Electrode Application
SO NANO LETTERS
LA English
DT Article
DE Conductive polymer binder; single molecule force; silicon nanoparticle;
high tap density; lithium-ion battery
ID PERFORMANCE SILICON ANODES; SI; DESIGN; LI
AB High-tap-density silicon nanomaterials are highly desirable as anodes for lithium ion batteries, due to their small surface area and minimum first-cycle loss. However, this material poses formidable challenges to polymeric binder design. Binders adhere on to the small surface area to sustain the drastic volume changes during cycling; also the low porosities and small pore size resulting from this material are detrimental to lithium ion transport. This study introduces a new binder, poly(1-pyrenemethyl methacrylate-co-methacrylic acid) (PPyMAA), for a high-tap-density nanosilicon electrode cycled in a stable manner with a first cycle efficiency of 82%-a value that is further improved to 87% when combined with graphite material. Incorporating the MAA acid functionalities does not change the lowest unoccupied molecular orbital (LUMO) features or lower the adhesion performance of the PPy homopolymer. Our single-molecule force microscopy measurement of PPyMAA reveals similar adhesion strength between polymer binder and anode surface when compared with conventional polymer such as homopolyacrylic acid (PAA), while being electronically conductive. The combined conductivity and adhesion afforded by the MAA and pyrene copolymer results in good cycling performance for the high-tap-density Si electrode.
C1 [Zhao, Hui; Zheng, Ziyan; Ling, Min; Jia, Zhe; Bai, Ying; Fu, Yanbao; Lei, Jinglei; Song, Xiangyun; Battaglia, Vincent S.; Liu, Gao] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, Energy Technol Area, Berkeley, CA 94720 USA.
[Qiao, Ruimin; Zhu, Chenhui; Yang, Wanli] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Wei, Yang; Messersmith, Phillip B.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
[Wei, Yang; Messersmith, Phillip B.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Bai, Ying] Beijing Inst Technol, Beijing Key Lab Environm Sci & Engn, Sch Mat Sci & Engn, Beijing 100081, Peoples R China.
[Lei, Jinglei] Chongqing Univ, Chongqing 400044, Peoples R China.
RP Liu, G (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, Energy Technol Area, Berkeley, CA 94720 USA.
EM gliu@lbl.gov
RI Yang, Wanli/D-7183-2011; Qiao, Ruimin/E-9023-2013
OI Yang, Wanli/0000-0003-0666-8063;
FU Assistant Secretary for Energy Efficiency, Vehicle Technologies Office
of the U.S. Department of Energy (U.S. DOE); Office of Science, Office
of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-05
CH11231]; LDRD program at the Lawrence Berkeley National Laboratory; NIH
[R37 DE014193]
FX This work was funded by the Assistant Secretary for Energy Efficiency,
Vehicle Technologies Office of the U.S. Department of Energy (U.S. DOE)
under the Advanced Battery Materials Research (BMR) and Applied Battery
Research (ABR) Programs. Soft X-ray absorption measurements and analysis
are performed at the Beamline 8.0.1 of Advanced Light Source (ALS). Wide
angle X-ray scattering was performed at the Beamline 7.3.3 of ALS.
Nuclear magnetic resonance spectroscopy (NMR) is performed at the
Molecular Foundry. TEM is performed at the National Center for Electron
Microscopy. All of these projects and facilities are supported by the
Director, Office of Science, Office of Basic Energy Sciences, of the
U.S. Department of Energy, under Contract No. DE-AC02-05 CH11231. Ruimin
Qiao is supported by the LDRD program at the Lawrence Berkeley National
Laboratory. The authors acknowledge partial support from NIH grant R37
DE014193.
NR 23
TC 10
Z9 10
U1 36
U2 179
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD DEC
PY 2015
VL 15
IS 12
BP 7927
EP 7932
DI 10.1021/acs.nanolett.5b03003
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CY3WC
UT WOS:000366339600022
PM 26599387
ER
PT J
AU Leonard, F
Song, ED
Li, QM
Swartzentruber, B
Martinez, JA
Wang, GT
AF Leonard, Francois
Song, Erdong
Li, Qiming
Swartzentruber, Brian
Martinez, Julio A.
Wang, George T.
TI Simultaneous Thermoelectric and Optoelectronic Characterization of
Individual Nanowires
SO NANO LETTERS
LA English
DT Article
DE Nanowires; GaN; GaN/AlGaN; photocurrent; thermoelectric; photogating
ID ARRAY SOLAR-CELLS; SCANNING PHOTOCURRENT MICROSCOPY; GAN-NANOWIRES;
CARBON NANOTUBES; BROAD-BAND; TRANSISTORS; SILICON; PHOTORESPONSE;
PHOTODETECTOR; SPECTROSCOPY
AB Semiconducting nanowires have been explored for a number of applications in optoelectronics such as photodetectors and solar cells. Currently, there is ample interest in identifying the mechanisms that lead to photoresponse in nanowires in order to improve and optimize performance. However, distinguishing among the different mechanisms, including photovoltaic, photothermoelectric, photoemission, bolometric, and photoconductive, is often difficult using purely optoelectronic measurements. In this work, we present an approach for performing combined and simultaneous thermoelectric and optoelectronic measurements on the same individual nanowire. We apply the approach to GaN/AlGaN core/shell and GaN/AlGaN/GaN core/shell/shell nanowires and demonstrate the photothermoelectric nature of the photocurrent observed at the electrical contacts at zero bias, for above- and below-bandgap illumination. Furthermore, the approach allows for the experimental determination of the temperature rise due to laser illumination, which is often obtained indirectly through modeling. We also show that under bias, both above- and below-bandgap illumination leads to a photoresponse in the channel with signatures of persistent photoconductivity due to photogating. Finally, we reveal the concomitant presence of photothermoelectric and photogating phenomena at the contacts in scanning photocurrent microscopy under bias by using their different temporal response. Our approach is applicable to a broad range of nanomaterials to elucidate their fundamental optoelectronic and thermoelectric properties.
C1 [Leonard, Francois] Sandia Natl Labs, Livermore, CA 94551 USA.
[Song, Erdong; Martinez, Julio A.] New Mexico State Univ, Dept Chem & Mat Engn, Las Cruces, NM 88003 USA.
[Li, Qiming; Wang, George T.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Swartzentruber, Brian] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
RP Leonard, F (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA.
EM fleonar@sandia.gov; julmart@nmsu.edu; gtwang@sandia.gov
FU U.S. Department of Energy, Office of Science, Basic Energy Sciences,
Materials Sciences and Engineering Division; New Mexico State
University; U.S. Department of Energy (DOE) Office of Science
[DE-AC52-06NA25396]; Sandia National Laboratories [DE-AC04-94AL85000];
U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX This work was supported by the U.S. Department of Energy, Office of
Science, Basic Energy Sciences, Materials Sciences and Engineering
Division. E.S. and J.A.M. acknowledge partial support from the New
Mexico State University. This work was performed, in part, at the Center
for Integrated Nanotechnologies, an Office of Science User Facility
operated for the U.S. Department of Energy (DOE) Office of Science by
Los Alamos National Laboratory (Contract DE-AC52-06NA25396) and Sandia
National Laboratories (Contract DE-AC04-94AL85000). Sandia National
Laboratories is a multiprogram laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the U.S. Department of Energy's National Nuclear Security
Administration under contract DE-AC04-94AL85000.
NR 47
TC 1
Z9 1
U1 15
U2 69
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD DEC
PY 2015
VL 15
IS 12
BP 8129
EP 8135
DI 10.1021/acs.nanolett.5b03572
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CY3WC
UT WOS:000366339600051
PM 26529491
ER
PT J
AU Yan, JX
Xia, J
Wang, XL
Liu, L
Kuo, JL
Tay, BK
Chen, SS
Zhou, W
Liu, Z
Shen, ZX
AF Yan, Jiaxu
Xia, Juan
Wang, Xingli
Liu, Lei
Kuo, Jer-Lai
Tay, Beng Kang
Chen, Shoushun
Zhou, Wu
Liu, Zheng
Shen, Ze Xiang
TI Stacking-Dependent Interlayer Coupling in Trilayer Mo52 with Broken
Inversion Symmetry
SO NANO LETTERS
LA English
DT Article
DE Molybdenum disulfide; stacking ultralow-frequency Raman spectroscopy;
photoluminescence; first-principles calculations
ID TRANSITION-METAL DICHALCOGENIDES; HEXAGONAL BORON-NITRIDE;
MOLYBDENUM-DISULFIDE; INPLANE HETEROSTRUCTURES; VALLEY POLARIZATION;
WANNIER FUNCTIONS; MONOLAYER MOS2; ATOMIC LAYERS; BAND-GAP; GRAPHENE
AB The stacking configuration in few-layer two-dimensional (2D) materials results in different structural symmetries and layer-to-layer interactions, and hence it provides a very useful parameter for tuning their electronic properties. For example, ABA-stacking trilayer graphene remains semimetallic similar to that of monolayer, while ABC-stacking is predicted to be a tunable band gap semiconductor under an external electric field. Such stacking dependence resulting from many-body interactions has recently been the focus of intense research activities. Here we demonstrate that few-layer MoS2 samples grown by chemical vapor deposition with different stacking configurations (AA, AB for bilayer; AAB, ABB, ABA, AAA for trilayer) exhibit distinct coupling phenomena in both photoluminescence and Raman spectra. By means of ultralow-frequency (ULF) Raman spectroscopy, we demonstrate that the evolution of interlayer interaction with various stacking configurations correlates strongly with layer-breathing mode (LBM) vibrations. Our ab initio calculations reveal that the layer-dependent properties arise from both the spin orbit coupling (SOC) and interlayer coupling in different structural symmetries. Such detailed understanding provides useful guidance for future spintronics fabrication using various stacked few-layer MoS2 blocks.
C1 [Yan, Jiaxu; Xia, Juan; Shen, Ze Xiang] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore.
[Wang, Xingli; Tay, Beng Kang; Liu, Zheng] Nanyang Technol Univ, Sch Elect & Elect Engn, Nanoelect Ctr Excellence, NOVITAS, Singapore 639798, Singapore.
[Liu, Lei] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun 130033, Peoples R China.
[Kuo, Jer-Lai] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan.
[Chen, Shoushun] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore.
[Zhou, Wu] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Liu, Zheng] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore.
[Shen, Ze Xiang] Nanyang Technol Univ, Ctr Disrupt Photon Technol, Singapore 637371, Singapore.
RP Shen, ZX (reprint author), Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore.
EM zexiang@ntu.edu.sg
RI yan, jiaxu/J-5984-2015; Zhou, Wu/D-8526-2011; Shen, Zexiang/B-6988-2011
OI Zhou, Wu/0000-0002-6803-1095;
FU MOE in Singapore [MOE2012-T2-2-124, MOE2011-T3-1-005]; NTU-A*STAR
Silicon Technologies Centre of Excellence [112 3510 0003]; U.S.
Department of Energy, Office of Science, Basic Energy Science, Materials
Sciences and Engineering Division
FX This research was supported by MOE under AcRF Tier 2 (MOE2012-T2-2-124)
and AcRF Tier 3 (MOE2011-T3-1-005) in Singapore. X.W. and B.K.T. would
like to acknowledge the funding support from NTU-A*STAR Silicon
Technologies Centre of Excellence under the program grant No. 112 3510
0003. The electron microscopy work was supported by the U.S. Department
of Energy, Office of Science, Basic Energy Science, Materials Sciences
and Engineering Division (W.Z.). J.Y. and J.X. acknowledge the technical
support from H.L.H at WITec.
NR 44
TC 7
Z9 7
U1 16
U2 78
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD DEC
PY 2015
VL 15
IS 12
BP 8155
EP 8161
DI 10.1021/acs.nanolett.5b03597
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CY3WC
UT WOS:000366339600055
PM 26565932
ER
PT J
AU Shulenburger, L
Baczewski, AD
Zhu, Z
Guan, J
Tomanek, D
AF Shulenburger, L.
Baczewski, A. D.
Zhu, Z.
Guan, J.
Tomanek, D.
TI The Nature of the Inter layer Interaction in Bulk and Few-Layer
Phosphorus
SO NANO LETTERS
LA English
DT Article
DE Phosphorus; phosphorene; ab initio; interlayer interaction
ID QUANTUM MONTE-CARLO; DENSITY-FUNCTIONAL APPROXIMATIONS; BLACK
PHOSPHORUS; NONCOVALENT INTERACTIONS; DIFFUSION; ACCURACY; ENERGY
AB Sensitive dependence of the electronic structure on the number of layers in few-layer phosphorene raises a question about the true nature of the interlayer interaction in socalled "van der Waals (vdW) solids". We performed quantum Monte Carlo calculations and found that the interlayer interaction in bulk black phosphorus and related few-layer phosphorene is associated with a significant charge redistribution that is incompatible with purely dispersive forces and not captured by density functional theory calculations with different vdW corrected functionals. These findings confirm the necessity of more sophisticated treatment of nonlocal electron correlation in total energy calculations.
C1 [Shulenburger, L.; Baczewski, A. D.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Zhu, Z.; Guan, J.; Tomanek, D.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
RP Tomanek, D (reprint author), Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
EM tomanek@pa.msu.edu
RI Zhu, Zhen/B-1292-2013
OI Zhu, Zhen/0000-0002-2982-4607
FU Innovative and Novel Computational Impact on Theory and Experiment
(INCITE) program [CPH103]; Office of Basic Energy Sciences (BES),
Department of Energy (DOE); National Science Foundation [EEC-0832785];
NSF/AFOSR EFRI 2-DARE [EFMA-1433459]; U.S. Department of Energy's
National Nuclear Security Administration [DE-AC04-94AL85000]
FX We are grateful for useful comments and conversations with Paul Kent,
Jeongnim Kim, Ann Mattsson, Jonathan Moussa, Lydia Nemec, and Gotthard
Seifert. Calculations were performed on Sequoia at Lawrence Livermore
National Laboratory and Mira at the Argonne Leadership Computing
Facility. We thank Anouar Benali for assistance performing calculations
on Mira. An award of computer time was provided by the Innovative and
Novel Computational Impact on Theory and Experiment (INCITE) program
with Project CPH103. A.B. and L.S. were supported through the Predictive
Theory and Modeling for Materials and Chemical Science program by the
Office of Basic Energy Sciences (BES), Department of Energy (DOE). Z.Z.,
J.G., and D.T. acknowledge partial support by the National Science
Foundation Cooperative Agreement No. EEC-0832785, titled "NSEC: Center
for High-Rate Nanomanufacturing". J.G. and D.T. also acknowledge partial
support by the NSF/AFOSR EFRI 2-DARE Grant EFMA-1433459. Sandia National
Laboratories is a multiprogram laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the U.S. Department of Energy's National Nuclear Security
Administration under contract DE-AC04-94AL85000.
NR 44
TC 42
Z9 42
U1 12
U2 70
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD DEC
PY 2015
VL 15
IS 12
BP 8170
EP 8175
DI 10.1021/acs.nanolett.5b03615
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CY3WC
UT WOS:000366339600057
PM 26523860
ER
PT J
AU Gamalski, AD
Tersoff, J
Kodambaka, S
Zakharov, DN
Ross, FM
Stach, EA
AF Gamalski, A. D.
Tersoff, J.
Kodambaka, S.
Zakharov, D. N.
Ross, F. M.
Stach, E. A.
TI The Role of Surface Passivation in Controlling Ge Nanowire Faceting
SO NANO LETTERS
LA English
DT Article
DE Nanowire; diffusion; in situ transmission electron microscopy; surface
passivation
ID SILICON NANOWIRES; SI NANOWIRES; IN-SITU; GROWTH; GOLD; DIGERMANE;
MIGRATION; GERMANIUM; HYDROGEN; KINETICS
AB In situ transmission electron microscopy observations of nanowire morphologies indicate that during Au-catalyzed Ge nanowire growth, Ge facets can rapidly form along the nanowire sidewalls when the source gas (here, digermane) flux is decreased or the temperature is increased. This sidewall faceting is accompanied by continuous catalyst loss as Au diffuses from the droplet to the wire surface. We suggest that high digermane flux and low temperatures promote effective surface passivation of Ge nanowires with H or other digermane fragments inhibiting diffusion and attachment of Au and Ge on the sidewalls. These results illustrate the essential roles of the precursor gas and substrate temperature in maintaining nanowire sidewall passivation, necessary to ensure the growth of straight, untapered, (111)-oriented nanowires.
C1 [Gamalski, A. D.; Zakharov, D. N.; Stach, E. A.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
[Tersoff, J.; Ross, F. M.] TJ Watson Res Ctr, IBM Res Div, Yorktown Hts, NY 10598 USA.
[Kodambaka, S.] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA.
RP Gamalski, AD (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
EM agamalski@bnl.gov; estach@bnl.gov
RI Stach, Eric/D-8545-2011; Zakharov, Dmitri/F-4493-2014
OI Stach, Eric/0000-0002-3366-2153;
FU Center for Functional Nanomaterials, which is a U.S. DOE Office of
Science Facility, at Brookhaven National Laboratory [DE-SC0012704]
FX Research supported at the Center for Functional Nanomaterials, which is
a U.S. DOE Office of Science Facility, at Brookhaven National Laboratory
under Contract No. DE-SC0012704.
NR 29
TC 3
Z9 3
U1 8
U2 38
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD DEC
PY 2015
VL 15
IS 12
BP 8211
EP 8216
DI 10.1021/acs.nanolett.5b03722
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CY3WC
UT WOS:000366339600063
PM 26539668
ER
PT J
AU Ong, GK
Williams, TE
Singh, A
Schaible, E
Helms, BA
Milliron, DJ
AF Ong, Gary K.
Williams, Teresa E.
Singh, Ajay
Schaible, Eric
Helms, Brett A.
Milliron, Delia J.
TI Ordering in Polymer Micelle-Directed Assemblies of Colloidal
Nanocrystals
SO NANO LETTERS
LA English
DT Article
DE composite; block copolymer; mesoporous; X-ray scattering; self-assembly
ID MESOPOROUS ARCHITECTURES; BLOCK-COPOLYMERS; NANOPARTICLES; FILMS;
TITANIA; ORGANIZATION; COMPOSITES; KINETICS
AB Assembly of presynthesized nanocrystals by block copolymer micelles can be rationalized by the incorporation of nanocrystals into micellar coronas of constant width. As determined by quantitative analysis using small-angle X-ray scattering, high loading of small nanocrystals yields composites exhibiting order on two length scales, whereas intermediate loading of nanocrystals larger than the coronal width produces single nanocrystal networks. The resulting structures obey expectations of thermodynamically driven assembly on the nanocrystal length scale, whereas kinetically frozen packing principles dictate order on the polymer micelle length scale.
C1 [Ong, Gary K.; Singh, Ajay; Milliron, Delia J.] Univ Texas Austin, McKetta Dept Chem Engn, Austin, TX 78712 USA.
[Ong, Gary K.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Williams, Teresa E.] Univ Calif Berkeley, Grad Grp Appl Sci & Technol, Berkeley, CA 94720 USA.
[Williams, Teresa E.; Helms, Brett A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Schaible, Eric] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Milliron, DJ (reprint author), Univ Texas Austin, McKetta Dept Chem Engn, Austin, TX 78712 USA.
EM milliron@che.utexas.edu
RI Milliron, Delia/D-6002-2012;
OI Singh, Ajay/0000-0002-5168-7522
FU Office of Science, Office of Basic Energy Sciences, of the U.S
Department of Energy (DOE) [DE-AC02-05CH11231]; National Science
Foundation [DGE 1106400]; Bay Area Photovoltaics Consortium - DOE EERE;
Welch Foundation [F-1848]
FX The authors thank Prof. Fiona Doyle, Amita Joshi, Evan Runnerstrom,
Raffaella Buonsanti, Natacha Krins, and Chenhui Zhu for helpful
discussions and beam-time support. Some of this research was carried out
at the Molecular Foundry and at the Advanced Light Source at the
Lawrence Berkeley National Laboratory, both user facilities that are
supported by the Office of Science, Office of Basic Energy Sciences, of
the U.S Department of Energy (DOE) under contract no. DE-AC02-05CH11231.
G.K.O. was supported by a National Science Foundation Graduate Research
Fellowship under grant number DGE 1106400. A.S. was supported by the Bay
Area Photovoltaics Consortium, sponsored by DOE EERE. D.J.M.
acknowledges support of the Welch Foundation (F-1848).
NR 42
TC 4
Z9 4
U1 6
U2 26
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD DEC
PY 2015
VL 15
IS 12
BP 8240
EP 8244
DI 10.1021/acs.nanolett.5b03765
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CY3WC
UT WOS:000366339600067
PM 26579565
ER
PT J
AU Koirala, N
Brahlek, M
Salehi, M
Wu, L
Dai, JX
Waugh, J
Nummy, T
Han, MG
Moon, J
Zhu, YM
Dessau, D
Wu, WD
Armitage, NP
Oh, S
AF Koirala, Nikesh
Brahlek, Matthew
Salehi, Maryam
Wu, Liang
Dai, Jixia
Waugh, Justin
Nummy, Thomas
Han, Myung-Geun
Moon, Jisoo
Zhu, Yimei
Dessau, Daniel
Wu, Weida
Armitage, N. Peter
Oh, Seongshik
TI Record Surface State Mobility and Quantum Hall Effect in Topological
Insulator Thin Films via Interface Engineering
SO NANO LETTERS
LA English
DT Article
DE Topological insulator; molecular beam epitaxy; heterostructure; thin
films; quantum Hall effect
ID BI2SE3
AB Material defects remain as the main bottleneck to the progress of topological insulators (TIs). In particular, efforts to achieve thin TI samples with dominant surface transport have always led to increased defects and degraded mobilities, thus making it difficult to probe the quantum regime of the topological surface states. Here, by utilizing a novel buffer layer scheme composed of an In2Se3/(Bi0.5In0.5)(2)Se-3 heterostructure, we introduce a quantum generation of Bi2Se3 films with an order of magnitude enhanced mobilities than before. This scheme has led to the first observation of the quantum Hall effect in Bi2Se3.
C1 [Koirala, Nikesh; Brahlek, Matthew; Dai, Jixia; Moon, Jisoo; Wu, Weida; Oh, Seongshik] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Salehi, Maryam] Rutgers State Univ, Dept Mat Sci & Engn, Piscataway, NJ 08854 USA.
[Wu, Liang; Armitage, N. Peter] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Waugh, Justin; Nummy, Thomas; Dessau, Daniel] Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
[Han, Myung-Geun; Zhu, Yimei] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA.
RP Oh, S (reprint author), Rutgers State Univ, Dept Phys & Astron, POB 849, Piscataway, NJ 08854 USA.
EM ohsean@physics.rutgers.edu
RI Wu, Liang/C-8715-2015
OI Wu, Liang/0000-0003-1696-7809
FU ONR [N000141210456]; NSF [DMR-1308142, DMR-0844807, DMR-1506618,
DMR-1157490]; GBMF's EPiQS Initiative [GBMF4418]; GBMF [GBMF2628]; DOE
[DE-FG0203ER46066, DE-AC02-98CH10886]
FX Office of Naval Research (ONR), National Science Foundation (NSF),
Gordon and Betty Moore Foundation (GBMF), U.S. Department of Energy
(DOE), State of Florida. Thin film growth and transport measurement work
(N. Koirala, M. Brahlek, M. Salehi, J. Moon, S. Oh) was supported by ONR
(N000141210456), NSF (DMR-1308142) and GBMF's EPiQS Initiative
(GBMF4418). TDMTS work (L.W, N.P.A.) is further supported by GBMF
(GBMF2628). STM work (J.D., W.W.) is supported by NSF (DMR-0844807 and
DMR-1506618). ARPES work (J.W., T.N., D.D.) is supported by DOE
(DE-FG0203ER46066). HAADF-STEM work (M.-G.H., Y.Z.) is supported by DOE
(DE-AC02-98CH10886). QHE measurement (National High Magnetic Field
Laboratory) is supported by NSF (DMR-1157490) and the State of Florida.
The authors declare no competing financial interest.
NR 30
TC 14
Z9 14
U1 17
U2 53
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD DEC
PY 2015
VL 15
IS 12
BP 8245
EP 8249
DI 10.1021/acs.nanolett.5b03770
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CY3WC
UT WOS:000366339600068
PM 26583739
ER
PT J
AU Ferry, VE
Hentschel, M
Alivisatos, AP
AF Ferry, Vivian E.
Hentschel, Mario
Alivisatos, A. Paul
TI Circular Dichroism in Off-Resonantly Coupled Plasmonic Nanosystems
SO NANO LETTERS
LA English
DT Article
DE surface plasmons; circular dichroism; chirality; plasmon hybridization
ID PHOTONIC METAMATERIAL; OPTICAL-ACTIVITY; CHIRALITY; DNA; NANOSTRUCTURES;
METAMOLECULES; NANOPARTICLES
AB Chiral plasmonic systems have been shown to exhibit large chiroptical responses, much larger than those found in molecular or solid state systems. In this Letter, we investigate the role of resonant coupling in such systems and whether the formation of collective plasmonic modes in a chiral assembly of metallic nanostructures is a necessary condition for chiroptical response. We show in experiment and simulation that off-resonant coupling between spectrally detuned nanostructures arranged with structural chirality leads to a clear but weak chiroptical response. We interpret our results in the framework of scattering between the individual constituents that in turn leads to a chiroptical farfield response. We envision that our results will allow further tuning and manipulation of chiroptical responses in plasmonic systems for tailored chiral light matter interaction.
C1 [Ferry, Vivian E.] Univ Minnesota Twin Cities, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA.
[Hentschel, Mario; Alivisatos, A. Paul] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Alivisatos, A. Paul] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Alivisatos, A. Paul] Univ Calif Berkeley, Dept Mat Sci, Berkeley, CA 94720 USA.
[Alivisatos, A. Paul] Univ Calif Berkeley, Kavli Energy Nano Sci Inst, Berkeley, CA 94720 USA.
RP Alivisatos, AP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM alivis@berkeley.edu
FU Alexander von Humboldt Foundation through Feodor Lynen scholarship;
National Science Foundation [DMR-1344290]
FX M.H. gratefully acknowledges financial support by the Alexander von
Humboldt Foundation through a Feodor Lynen scholarship. This material is
based upon work supported by the National Science Foundation under Grant
DMR-1344290. The authors acknowledge the Marvell Nano-fabrication
Laboratory for the use of their facilities and the group of Xiang Zhang
for the use of their FTIR spectrometer.
NR 28
TC 5
Z9 5
U1 19
U2 68
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD DEC
PY 2015
VL 15
IS 12
BP 8336
EP 8341
DI 10.1021/acs.nanolett.5b03970
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CY3WC
UT WOS:000366339600084
PM 26569468
ER
PT J
AU Berkery, JW
Sabbagh, SA
Bell, RE
Gerhardt, SP
LeBlanc, BP
Menard, JE
AF Berkery, J. W.
Sabbagh, S. A.
Bell, R. E.
Gerhardt, S. P.
LeBlanc, B. P.
Menard, J. E.
TI Modifications to ideal stability by kinetic effects in NSTX
SO NUCLEAR FUSION
LA English
DT Article
DE plasma stability; ideal stability; no-wall limit; resistive wall mode;
kinetic effects
ID TIME EQUILIBRIUM RECONSTRUCTION; SPHERICAL TORUS EXPERIMENT; RESISTIVE
WALL MODE; MHD STABILITY; TOKAMAK PLASMAS; CURRENT PROFILE; LIMITS;
STABILIZATION; INSTABILITIES; CONFINEMENT
AB Marginal stability points of global modes during high plasma pressure operation in the National Spherical Torus Experiment (NSTX) device can be found by computing kinetic modifications to ideal magnetohydrodynamic limits on stability. Calculations with the DCON code for nearly five thousand experimental equilibria show that previous estimates of the no-wall limit (below which the ideal kink/ballooning mode would be stable even without conducting structure surrounding the plasma) on the plasma beta (a ratio of plasma pressure to magnetic pressure) and internal inductance (a measure of the current profile peakedness) were relatively accurate, though about 10% low. The no-wall beta limit also decreased with increasing aspect ratio and increasing broadness of the pressure profile, and these dependencies have implications for the upgrade to NSTX which has a larger aspect ratio and new neutral beams that may increase the broadness of pressure and current profiles. Kinetic modifications to ideal limits calculated with the Modifications to Ideal Stability by Kinetic effects (MISK) code are further validated by detailed comparison with experimental results from NSTX. In several discharges the code predicts a transition from damping of the mode to growth as the time approaches the experimental time of marginal stability to the resistive wall mode (RWM). The main stabilization mechanism is through rotational resonances with the motions of thermal particles in the plasma, though energetic particles also contribute to stability, and it is often when the plasma rotation falls in between these resonances that the RWM was destabilized in NSTX. The calculations are found to be slightly affected by changing the assumed magnetic structure of the mode as well. These validations are important for real-time assessment of stability limits for disruption avoidance, and reliable projections of the stability of future devices.
C1 [Berkery, J. W.; Sabbagh, S. A.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA.
[Bell, R. E.; Gerhardt, S. P.; LeBlanc, B. P.; Menard, J. E.] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08544 USA.
RP Berkery, JW (reprint author), Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA.
EM jberkery@pppl.gov
OI Menard, Jonathan/0000-0003-1292-3286
FU US Department of Energy [DE-FG02-99ER54524, DE-AC02-09CH11466]
FX The authors would like to thank S Kaye for his careful reading and
editing of the manuscript. This research was supported by the US
Department of Energy under contracts: DE-FG02-99ER54524 (Columbia
University) and DE-AC02-09CH11466 (Princeton Plasma Physics Laboratory).
NR 59
TC 1
Z9 1
U1 6
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0029-5515
EI 1741-4326
J9 NUCL FUSION
JI Nucl. Fusion
PD DEC
PY 2015
VL 55
IS 12
AR 123007
DI 10.1088/0029-5515/55/12/123007
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA CY6QS
UT WOS:000366534500009
ER
PT J
AU Deng, CB
Brower, DL
Anderson, DT
Anderson, FSB
Briesemeister, A
Likin, KM
AF Deng, C. B.
Brower, D. L.
Anderson, D. T.
Anderson, F. S. B.
Briesemeister, A.
Likin, K. M.
TI Core density turbulence in the HSX Stellarator
SO NUCLEAR FUSION
LA English
DT Article
DE stellarator; turbulence; transport
ID TEMPERATURE-GRADIENT TURBULENCE; SIMULATION
AB Broadband turbulent density fluctuations are explored in the helically symmetric stellarator experiment (HSX) by investigating changes related to plasma heating power and location. No fluctuation response is observed to occur with large changes in electron temperature and its gradient, thereby eliminating temperature gradient as a driving mechanism. Instead, measurements reveal that density turbulence varies inversely with electron density scale length. This response is consistent with density gradient drive as one might expect for trapped electron mode (TEM) turbulence. In general, the plasma stored energy and particle confinement are higher for discharges with reduced fluctuations in the plasma core. When the density fluctuation amplitude is reduced, increased plasma rotation is also evident suggesting a role is being played by intrinsic plasma flow.
C1 [Deng, C. B.; Brower, D. L.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Anderson, D. T.; Anderson, F. S. B.; Likin, K. M.] Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA.
[Briesemeister, A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Deng, CB (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
EM brower@physics.uda.edu
FU U.S. Department of Energy Office of Science, Office of Fusion Energy
Sciences program [DE-FG02-01ER-54615, DE-FG02-93ER54222]; HSX group
FX The authors would like to thank the entire HSX group for their
contributions to and support of these investigations and Dr. W. X. Ding
for helpful discussions. This material is based upon work supported by
the U.S. Department of Energy Office of Science, Office of Fusion Energy
Sciences program under Award Numbers DE-FG02-01ER-54615 and
DE-FG02-93ER54222.
NR 24
TC 0
Z9 0
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0029-5515
EI 1741-4326
J9 NUCL FUSION
JI Nucl. Fusion
PD DEC
PY 2015
VL 55
IS 12
AR 123003
DI 10.1088/0029-5515/55/12/123003
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA CY6QS
UT WOS:000366534500005
ER
PT J
AU Garofalo, AM
Gong, X
Grierson, BA
Ren, Q
Solomon, WM
Strait, EJ
Van Zeeland, MA
Holcomb, CT
Meneghini, O
Smith, SP
Staebler, GM
Wan, B
Bravenec, R
Budny, RV
Ding, S
Hanson, JM
Heidbrink, WW
Lao, LL
Li, G
Pan, C
Petty, CC
Qian, J
Paz-Soldan, C
Xu, G
AF Garofalo, A. M.
Gong, X.
Grierson, B. A.
Ren, Q.
Solomon, W. M.
Strait, E. J.
Van Zeeland, M. A.
Holcomb, C. T.
Meneghini, O.
Smith, S. P.
Staebler, G. M.
Wan, B.
Bravenec, R.
Budny, R. V.
Ding, S.
Hanson, J. M.
Heidbrink, W. W.
Lao, L. L.
Li, G.
Pan, C.
Petty, C. C.
Qian, J.
Paz-Soldan, C.
Xu, G.
TI Compatibility of internal transport barrier with steady-state operation
in the high bootstrap fraction regime on DIII-D
SO NUCLEAR FUSION
LA English
DT Article
DE steady state; ion transport barrier; wall stabilization; high beta
ID HIGH CONFINEMENT; CURRENT PROFILE; SHEAR PLASMAS; JT-60U; TOKAMAK;
STATIONARY; DISCHARGES; DRIVEN; MODES; JET
AB Recent EAST/DIII-D joint experiments on the high poloidal beta tokamak regime in DIII-D have demonstrated fully noninductive operation with an internal transport barrier (ITB) at large minor radius, at normalized fusion performance increased by. 30% relative to earlier work (Politzer et al 2005 Nucl. Fusion 45 417). The advancement was enabled by improved understanding of the 'relaxation oscillations', previously attributed to repetitive ITB collapses, and of the fast ion behavior in this regime. It was found that the 'relaxation oscillations' are coupled core-edge modes amenable to wall-stabilization, and that fast ion losses which previously dictated a large plasma-wall separation to avoid wall over-heating, can be reduced to classical levels with sufficient plasma density. By using optimized waveforms of the plasma-wall separation and plasma density, fully noninductive plasmas have been sustained for long durations with excellent energy confinement quality, bootstrap fraction >= 80%, beta(N) <= 4, beta(P) >= 3, and beta(T) >= 2%. These results bolster the applicability of the high poloidal beta tokamak regime toward the realization of a steady-state fusion reactor.
C1 [Garofalo, A. M.; Strait, E. J.; Van Zeeland, M. A.; Meneghini, O.; Smith, S. P.; Staebler, G. M.; Lao, L. L.; Petty, C. C.; Paz-Soldan, C.] Gen Atom Co, San Diego, CA 92186 USA.
[Gong, X.; Ren, Q.; Wan, B.; Ding, S.; Li, G.; Pan, C.; Qian, J.; Xu, G.] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China.
[Grierson, B. A.; Solomon, W. M.; Budny, R. V.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Holcomb, C. T.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bravenec, R.] Fourth State Res, Austin, TX 78704 USA.
[Hanson, J. M.] Columbia Univ, New York, NY 10027 USA.
[Heidbrink, W. W.] Univ Calif Irvine, Irvine, CA 92697 USA.
RP Garofalo, AM (reprint author), Gen Atom Co, POB 85608, San Diego, CA 92186 USA.
EM garofalo@fusion.gat.com
OI Solomon, Wayne/0000-0002-0902-9876
FU U.S. Department of Energy, Office of Science, Office of Fusion Energy
Sciences; DOE Office of Science [DE-FC02-04ER54698, DE-AC02-09CH11466,
DE-AC52-07NA27344, DE-FG02-04ER54761, SC-G903402]; National Magnetic
Confinement Fusion Science Program of China [2015GB102000, 2015GB110001]
FX This material is based upon work supported in part by the U.S.
Department of Energy, Office of Science, Office of Fusion Energy
Sciences, using the DIII-D National Fusion Facility, a DOE Office of
Science user facility, under Awards DE-FC02-04ER54698,
DE-AC02-09CH11466, DE-AC52-07NA27344, DE-FG02-04ER54761, and SC-G903402
and in part by the National Magnetic Confinement Fusion Science Program
of China under contracts 2015GB102000 and 2015GB110001. DIII-D data
shown in this paper can be obtained in digital format by following the
links at https://fusion.gat.com/global/D3D_DMP.
NR 35
TC 7
Z9 7
U1 4
U2 20
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0029-5515
EI 1741-4326
J9 NUCL FUSION
JI Nucl. Fusion
PD DEC
PY 2015
VL 55
IS 12
AR 123025
DI 10.1088/0029-5515/55/12/123025
PG 11
WC Physics, Fluids & Plasmas
SC Physics
GA CY6QS
UT WOS:000366534500027
ER
PT J
AU Pedersen, TS
Andreeva, T
Bosch, HS
Bozhenkov, S
Effenberg, F
Endler, M
Feng, Y
Gates, DA
Geiger, J
Hartmann, D
Holbe, H
Jakubowski, M
Konig, R
Laqua, HP
Lazerson, S
Otte, M
Preynas, M
Schmitz, O
Stange, T
Turkin, Y
AF Pedersen, T. Sunn
Andreeva, T.
Bosch, H. -S.
Bozhenkov, S.
Effenberg, F.
Endler, M.
Feng, Y.
Gates, D. A.
Geiger, J.
Hartmann, D.
Hoelbe, H.
Jakubowski, M.
Koenig, R.
Laqua, H. P.
Lazerson, S.
Otte, M.
Preynas, M.
Schmitz, O.
Stange, T.
Turkin, Y.
CA W7-X Team
TI Plans for the first plasma operation of Wendelstein 7-X
SO NUCLEAR FUSION
LA English
DT Article
DE stellarator; Wendelstein 7-X; limiter; operation; planning
ID ENGINEERING DESIGN; STELLARATOR; PHYSICS; W7-AS; DIAGNOSTICS; TRANSPORT;
FIELD; COILS
AB Wendelstein 7-X (W7-X) is currently under commissioning in preparation for its initial plasma operation phase, operation phase 1.1 (OP1.1). This first phase serves primarily to provide an integral commissioning of all major systems needed for plasma operation, as well as systems, such as diagnostics, that need plasma operation to verify their foreseen functions. In OP1.1, W7-X will have a reduced set of in-vessel components. In particular, five graphite limiter stripes replace the later foreseen divertor. This paper describes the expected machine capabilities in OP1.1, as well as a selection of physics topics that can be addressed in OP1.1, despite the simplified configuration and the reduced machine capabilities. Physics topics include the verification and adjustment of the magnetic topology, the testing of the foreseen plasma start-up scenarios and the feed-forward control of plasma density and temperature evolution, as well as more advanced topics such as scrape-off layer (SOL) studies at short connection lengths and transport studies. Plasma operation in OP1.1 will primarily be performed in helium, with a hydrogen plasma phase at the end.
C1 [Pedersen, T. Sunn; Andreeva, T.; Bosch, H. -S.; Bozhenkov, S.; Endler, M.; Feng, Y.; Geiger, J.; Hartmann, D.; Hoelbe, H.; Jakubowski, M.; Koenig, R.; Laqua, H. P.; Otte, M.; Stange, T.; Turkin, Y.; W7-X Team] Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany.
[Effenberg, F.; Schmitz, O.] Univ Wisconsin, Madison, WI 53706 USA.
[Gates, D. A.; Lazerson, S.] Princeton Plasma Phys Lab, Princeton, NJ 08540 USA.
[Preynas, M.] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland.
RP Pedersen, TS (reprint author), Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany.
EM thomas.sunn.pedersen@ipp.mpg.de
RI Lazerson, Samuel/E-4816-2014
OI Lazerson, Samuel/0000-0001-8002-0121
FU Euratom research and training programme [633053]
FX We thank C Beidler, A Dinklage, P Helander and H Maassberg for their
useful feedback on this paper. This work was carried out within the
framework of the EUROfusion Consortium and received funding from the
Euratom research and training programme 2014-2018 under grant agreement
no. 633053. The views and opinions expressed herein do not necessarily
reflect those of the European Commission.
NR 45
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U1 4
U2 32
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0029-5515
EI 1741-4326
J9 NUCL FUSION
JI Nucl. Fusion
PD DEC
PY 2015
VL 55
IS 12
AR 126001
DI 10.1088/0029-5515/55/12/126001
PG 13
WC Physics, Fluids & Plasmas
SC Physics
GA CY6QS
UT WOS:000366534500032
ER
PT J
AU Poli, FM
Andre, RG
Bertelli, N
Gerhardt, SP
Mueller, D
Taylor, G
AF Poli, F. M.
Andre, R. G.
Bertelli, N.
Gerhardt, S. P.
Mueller, D.
Taylor, G.
TI Simulations towards the achievement of non-inductive current ramp-up and
sustainment in the National Spherical Torus Experiment Upgrade
SO NUCLEAR FUSION
LA English
DT Article
DE ramp-up; non-inductive; magnetic fusion; neutral beams; radio frequency
waves
ID CURRENT DRIVE; ASPECT-RATIO; TOKAMAK; TRANSPORT; PLASMAS; INJECTION;
GEOMETRY; FACILITY; PHYSICS; DESIGN
AB One of the goals of the National Spherical Torus Experiment Upgrade (NSTX-U) (Menard et al 2012 Nucl. Fusion 52 083015) is the demonstration of fully non-inductive start-up, current ramp-up and sustainment. This work discusses predictive simulations where the available heating and current drive systems are combined to maximize the non-inductive current and minimize the solenoidal contribution. Radio-frequency waves at harmonics higher than the ion cyclotron resonance (high-harmonic fast waves (HHFW)) and neutral beam injection are used to ramp the plasma current non-inductively starting from an initial Ohmic plasma. An interesting synergy is observed in the simulations between the HHFW and electron cyclotron (EC) wave heating. Time-dependent simulations indicate that, depending on the phasing of the HHFW antenna, EC wave heating can significantly increase the effectiveness of the radio-frequency power, by heating the electrons and increasing the current drive efficiency, thus relaxing the requirements on the level of HHFW power that needs to be absorbed in the core plasma to drive the same amount of fast-wave current.
C1 [Poli, F. M.; Andre, R. G.; Bertelli, N.; Gerhardt, S. P.; Mueller, D.; Taylor, G.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Poli, FM (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM fpoli@pppl.gov
FU U.S. Department of Energy [DE-AC02-CH0911466]
FX M. Podesta is kindly acknowledged for valuable discussion, S.M. Kaye and
J.R. Wilson for carefully reading the manuscript. This work was
supported by the U.S. Department of Energy under contract
DE-AC02-CH0911466. The digital data for this paper can be found in
http://arks.princeton.edu/ark:/88435/dsp011v53k0334
NR 54
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U1 2
U2 8
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0029-5515
EI 1741-4326
J9 NUCL FUSION
JI Nucl. Fusion
PD DEC
PY 2015
VL 55
IS 12
AR 123011
DI 10.1088/0029-5515/55/12/123011
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA CY6QS
UT WOS:000366534500013
ER
PT J
AU Wang, WX
Ethier, S
Ren, Y
Kaye, S
Chen, J
Startsev, E
Lu, Z
AF Wang, W. X.
Ethier, S.
Ren, Y.
Kaye, S.
Chen, J.
Startsev, E.
Lu, Z.
TI Distinct turbulence sources and confinement features in the spherical
tokamak plasma regime
SO NUCLEAR FUSION
LA English
DT Article
DE plasma turbulence; transport; confinement; spherical tokamak; drift wave
instability
ID SHEARED FLOWS
AB New turbulence contributions to plasma transport and confinement in the spherical tokamak (ST) regime are identified through nonlinear gyrokinetic simulations. The drift wave Kelvin-Helmholtz (KH) mode characterized by intrinsic mode asymmetry is shown to drive significant ion thermal transport in strongly rotating national spherical torus experiment (NSTX) L-modes. The long wavelength, quasi-coherent dissipative trapped electron mode (TEM) is destabilized in NSTX H-modes despite the presence of strong ExB shear, providing a robust turbulence source dominant over collisionless TEM. Dissipative trapped electron mode (DTEM)-driven transport in the NSTX parametric regime is shown to increase with electron collision frequency, offering one possible source for the confinement scaling observed in experiments. There exists a turbulence-free regime in the collision-induced collisionless trapped electron mode to DTEM transition for ST plasmas. This predicts a natural access to a minimum transport state in the low collisionality regime that future advanced STs may cover.
C1 [Wang, W. X.; Ethier, S.; Ren, Y.; Kaye, S.; Chen, J.; Startsev, E.] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
[Lu, Z.] Univ Calif San Diego, La Jolla, CA 92093 USA.
RP Wang, WX (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM wwang@pppl.gov
FU US DOE [DE-AC02-09CH11466]
FX Useful discussions with Drs T.S. Hahm, G. Rewoldt, X. Tang, W.W. Lee and
G. Hammett are acknowledged. Simulations were performed on Edison at
NERSC. This work was supported by US DOE Contract No. DE-AC02-09CH11466.
NR 13
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U1 3
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0029-5515
EI 1741-4326
J9 NUCL FUSION
JI Nucl. Fusion
PD DEC
PY 2015
VL 55
IS 12
AR 122001
DI 10.1088/0029-5515/55/12/122001
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA CY6QS
UT WOS:000366534500001
ER
PT J
AU Zhang, RB
Fu, GY
White, RB
Wang, XG
AF Zhang, R. B.
Fu, G. Y.
White, R. B.
Wang, X. G.
TI Local wave particle resonant interaction causing energetic particle
prompt loss in DIII-D plasmas
SO NUCLEAR FUSION
LA English
DT Article
DE fast ion loss; tokamak; plasma
ID ALFVEN EIGENMODES; SIMULATIONS; TOKAMAKS; IONS
AB A new wave particle resonance mechanism is found explaining the first-orbit prompt neutral beam-ion losses induced by shear Alfven Eigenmodes (AEs) in the DIII-D tokamak. Because of the large banana width, a typical trapped beam ion can only interact locally with a core localised Alfven Eigenmode for a fraction of its orbit, i.e. part of its inner leg of the banana orbit. These trapped beam ions can experience substantial radial kick within one bounce as long as the phases of the wave seen by the particles are nearly constant during this local interaction. A wave particle resonant condition is found based on the locally averaged particle orbit frequencies over the interaction part of the particle orbit. It is further found that the frequency width of the local resonance is quite large because the interaction time is short. This implies that particles over a considerable region of phase space can interact effectively with the localised AEs and experience large radial kicks within one bounce orbit. The radial kick size is found numerically and analytically to scale linearly in AE amplitude and is about 5 cm for typical experimental parameters. These results are consistent with experimental measurement.
C1 [Zhang, R. B.; Wang, X. G.] Peking Univ, Fus Simulat Ctr, State Key Lab Nucl Phys & Technol, Sch Phys, Beijing 100871, Peoples R China.
[Zhang, R. B.; Fu, G. Y.; White, R. B.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Wang, X. G.] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China.
RP Zhang, RB (reprint author), Peking Univ, Fus Simulat Ctr, State Key Lab Nucl Phys & Technol, Sch Phys, Beijing 100871, Peoples R China.
EM ruibinzhang@pku.edu.cn
RI White, Roscoe/D-1773-2013
OI White, Roscoe/0000-0002-4239-2685
FU Department of Energy Scientific Discovery through the U.S. Department of
Energy [DE-AC02-09-CH11466]; National Natural Science Foundation of
China [11261140326]; NMCSFP [2014GB107004, 2013GB111001]; CSC; China
Scholarship Council (CSC)
FX This work is supported by the Department of Energy Scientific Discovery
through the U.S. Department of Energy under Grant No.
DE-AC02-09-CH11466, the National Natural Science Foundation of China
under Grant. No. 11261140326, and NMCSFP with Nos. 2014GB107004 and
2013GB111001. All the simulations were performed on the Edison
super-computer at the National Energy Research Scientific Computing
Center (NERSC). One of the authors Ruibin Zhang also thanks the China
Scholarship Council (CSC), as the work was done during his visit to PPPL
funded by CSC.
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U1 3
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PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0029-5515
EI 1741-4326
J9 NUCL FUSION
JI Nucl. Fusion
PD DEC
PY 2015
VL 55
IS 12
AR 122002
DI 10.1088/0029-5515/55/12/122002
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA CY6QS
UT WOS:000366534500002
ER
PT J
AU Wierzchowski, W
Wieteska, K
Sobierajski, R
Klinger, D
Pelka, J
Zymierska, D
Paulmann, C
Hau-Riege, SP
London, RA
Graf, A
Burian, T
Chalupsky, J
Gaudin, J
Krzywinski, J
Moeller, S
Messerschmidt, M
Bozek, J
Bostedt, C
AF Wierzchowski, W.
Wieteska, K.
Sobierajski, R.
Klinger, D.
Pelka, J.
Zymierska, D.
Paulmann, C.
Hau-Riege, S. P.
London, R. A.
Graf, A.
Burian, T.
Chalupsky, J.
Gaudin, J.
Krzywinski, J.
Moeller, S.
Messerschmidt, M.
Bozek, J.
Bostedt, Ch.
TI Synchrotron topographic evaluation of strain around craters generated by
irradiation with X-ray pulses from free electron laser with different
intensities
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM
INTERACTIONS WITH MATERIALS AND ATOMS
LA English
DT Article
DE X-ray free electron laser; Soft X-ray lasers; Irradiation with
femtosecond pulses; Silicon; Synchrotron diffraction topography
AB The silicon sample irradiated with femtosecond soft X-ray pulses at the Linac Coherent Light Source has been studied with several synchrotron X-ray diffraction topographic methods at HASYIAB. The irradiations were performed for two different wavelengths combined with various impact energy controlled by means of the gas attenuator. The topographic investigation revealed characteristic images of the created craters included the inner region reflecting the X-rays at lower angle, coming most probably from part of the silicon melted during the irradiation. The melted region was surrounded by strained outer region, similar to those observed in the case of rod-like inclusion but less regular in view of some irregularity of the beam used for generation of the craters. It was observed that the higher impact energy higher dose of the irradiating pulses resulted in increasing diameter of the melted area of the crater and the range of the strained region around it.
Some features of the monochromatic and white beam back reflection section images of the craters were reproduced in numerically simulated images approximating the strain field in the crater by a droplet containing uniformly distributed point inclusions. (C) 2015 Published by Elsevier B.V.
C1 [Wierzchowski, W.] Inst Elect Mat Technol, PL-01919 Warsaw, Poland.
[Wieteska, K.] Natl Ctr Nucl Res, PL-05400 Otwock, Poland.
[Sobierajski, R.; Klinger, D.; Pelka, J.; Zymierska, D.] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland.
[Paulmann, C.] DESY HASYLAB, D-22607 Hamburg, Germany.
[Hau-Riege, S. P.; London, R. A.; Graf, A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Burian, T.; Chalupsky, J.] Acad Sci Czech Republic, Inst Phys, Prague 18221 8, Czech Republic.
[Gaudin, J.] European XFEL GmbH, D-22761 Hamburg, Germany.
[Krzywinski, J.; Moeller, S.; Messerschmidt, M.; Bozek, J.; Bostedt, Ch.] Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
RP Wierzchowski, W (reprint author), Inst Elect Mat Technol, Wolczynska 133, PL-01919 Warsaw, Poland.
EM wojciech.wierzchowski@itme.edu.pl
RI Messerschmidt, Marc/F-3796-2010; Sobierajski, Ryszard/E-7619-2012;
Klinger, Dorota/K-8819-2016; Bozek, John/E-9260-2010; Pelka,
Jerzy/S-8587-2016
OI Messerschmidt, Marc/0000-0002-8641-3302; Bozek,
John/0000-0001-7486-7238; Pelka, Jerzy/0000-0002-1863-8219
FU HASYLAB [I-20110423 EC]; Polish National Science Centre
[DEC-2011/03/B/ST3/02453]
FX The synchrotron investigations were supported by the HASYLAB project
I-20110423 EC. This work was also supported by the Polish National
Science Centre (Grant no. DEC-2011/03/B/ST3/02453)
NR 10
TC 0
Z9 0
U1 4
U2 16
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-583X
EI 1872-9584
J9 NUCL INSTRUM METH B
JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms
PD DEC 1
PY 2015
VL 364
BP 20
EP 26
DI 10.1016/j.nimb.2015.07.115
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Atomic, Molecular & Chemical; Physics, Nuclear
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA CY7VP
UT WOS:000366617700004
ER
PT J
AU Baxamusa, S
Laurence, T
Worthington, M
Ehrmann, P
AF Baxamusa, Salmaan
Laurence, Ted
Worthington, Matthew
Ehrmann, Paul
TI Photo-oxidation of polymer-like amorphous hydrogenated carbon under
visible light illumination
SO POLYMER DEGRADATION AND STABILITY
LA English
DT Article
DE Amorphous hydrogenated carbon; Plasma polymer; Photo-oxidation; Visible
light; Aging
ID PLASMA POLYMERS; METHYL-METHACRYLATE; FILMS; OXIDATION; DEPOSITION;
STABILITY; COATINGS; NITROGEN; XPS
AB Amorphous hydrogenated carbon (a-C:H), a polymer-like network typically synthesized by plasma chemical vapor deposition, has long been known to exhibit optical absorption of visible light (lambda > 400 nm). Here, we report that this absorption is accompanied by rapid photo-oxidation (within minutes) that behaves in most respects like classic polymer photo-oxidation with the exception that it occurs under visible light illumination rather than ultraviolet illumination. Lower plasma power during deposition produces a-C:H that is less crosslinked, is less absorptive, has longer photoluminescence lifetimes, and has a slower photo-oxidative degradation than a-C:H deposited at higher plasma power. The optical gap of the material deposited here is similar to 2.5 eV, and we correspondingly observe photo-oxidation at photon energies of 2.7 and 3.1 eV. A reduced photo-oxidative response is observed at sub-gap energies, suggesting that defect states or absorption tails enable absorption at lower energies. The photo-oxidation depends on both the total accumulated dose as well as the intensity of the illumination, suggesting either a transport limitation of 02 in the a-C:H or a complex reaction pathway. Under typical laboratory lighting conditions, plasma CVD a-C:H continues to photo-oxidize for more than 20 weeks, demonstrating that any characterization of the long-term behavior of a-C:H under use conditions requires control of not only atmospheric conditions but also ambient lighting environment. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Baxamusa, Salmaan; Laurence, Ted; Worthington, Matthew; Ehrmann, Paul] Lawrence Livermore Natl Lab, Div Mat Sci, Livermore, CA USA.
RP Baxamusa, S (reprint author), L-470,7000 East Ave, Livermore, CA 94550 USA.
EM baxamusal@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX This work performed under the auspices of the U.S. Department of Energy
by Lawrence Livermore National Laboratory under contract
DE-AC52-07NA27344 within the LDRD program.
NR 41
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U1 3
U2 6
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0141-3910
EI 1873-2321
J9 POLYM DEGRAD STABIL
JI Polym. Degrad. Stabil.
PD DEC
PY 2015
VL 122
BP 133
EP 138
DI 10.1016/j.polymdegradstab.2015.11.001
PG 6
WC Polymer Science
SC Polymer Science
GA CZ0DX
UT WOS:000366776400014
ER
PT J
AU Ju, Y
Wang, L
Liu, HB
Tian, KP
AF Ju, Yang
Wang, Li
Liu, Hongbin
Tian, Kaipei
TI An experimental investigation of the thermal spalling of
polypropylene-fibered reactive powder concrete exposed to elevated
temperatures
SO SCIENCE BULLETIN
LA English
DT Article
DE Polypropylene reactive powder concrete (PPRPC); Thermal spalling; Vapor
pressure mechanism; Polypropylene fibers; Elevated temperatures
ID HIGH-PERFORMANCE CONCRETE; HIGH-STRENGTH CONCRETE;
MECHANICAL-PROPERTIES; PORE PRESSURE; HEATED CONCRETE; CEMENT PASTES;
BEHAVIOR; FIRE; MICROSTRUCTURE; RPC
AB Polypropylene fibers are embedded to prevent reactive powder concrete (RPC) from spalling failure under high temperatures. This paper probes the influence of embedded fibers at various volumetric dosages on the thermomechanical properties of polypropylene-fibered reactive powder concrete (PPRPC) exposed to high temperatures up to 350 degrees C and on the spalling performance and characteristics up to 600 degrees C. The thermomechanical properties include the characteristic temperature for spalling, and residual strengths, such as the compressive strength, split tensile strength, and flexural tensile strength. A high-definition charge-coupled device camera and scanning electron microscope technology were employed to capture the spalling processes and to detect the microstructural changes in the materials with various fiber dosages. To understand and characterize the mechanism by which polypropylene fibers influence the thermal spalling of RPC, a numerical model to determine the moisture migration and vapor pressure transmission during spalling was developed in this paper. It showed that there was an optimal volumetric dosage of fibers to prevent PPRPC from explosive spalling. The relationships between the mechanical characteristics of PPRPC and the fiber dosages were derived based on experimental data.
C1 [Ju, Yang; Liu, Hongbin] China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China.
[Ju, Yang] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Peoples R China.
[Ju, Yang] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Wang, Li] China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China.
[Tian, Kaipei] Univ Stuttgart, Inst Construct Mat, D-70569 Stuttgart, Germany.
RP Ju, Y (reprint author), China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China.
EM juy@cumtb.edu.cn
FU National Natural Science Foundation of China [51125017, 50974125];
Research Fund for Doctoral Programs of Chinese Ministry of Education
[20110023110015]; Fund for Creative Research & Development Group Program
of Jiangsu Province; Priority Academic Program Development of Jiangsu
Higher Education Institutions (PAPD)
FX This work was supported by the National Natural Science Foundation of
China (51125017 and 50974125), Research Fund for Doctoral Programs of
Chinese Ministry of Education (20110023110015), the Fund for Creative
Research & Development Group Program of Jiangsu Province, and the
Priority Academic Program Development of Jiangsu Higher Education
Institutions (PAPD).
NR 65
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Z9 2
U1 7
U2 26
PU SCIENCE PRESS
PI BEIJING
PA 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
SN 2095-9273
EI 2095-9281
J9 SCI BULL
JI Sci. Bull.
PD DEC
PY 2015
VL 60
IS 23
BP 2022
EP 2040
DI 10.1007/s11434-015-0939-0
PG 19
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA CY7ZS
UT WOS:000366628800007
ER
PT J
AU Block, KI
Gyllenhaal, C
Lowe, L
Amedei, A
Amin, ARMR
Amin, A
Aquilano, K
Arbiser, J
Arreola, A
Arzumanyan, A
Ashraf, SS
Azmi, AS
Benencia, F
Bhakta, D
Bilsland, A
Bishayeen, A
Blain, SW
Block, PB
Boosani, CS
Carey, TE
Carnero, A
Carotenuto, M
Casey, SC
Chakrabarti, M
Chaturvedi, R
Chen, GZ
Chenx, H
Chen, S
Chen, YC
Choi, BK
Ciriolo, MR
Coley, HM
Collins, AR
Connell, M
Crawford, S
Curran, CS
Dabrosin, C
Damia, G
Dasgupta, S
DeBerardinis, RJ
Decker, WK
Dhawan, P
Diehl, AME
Dong, JT
Dou, QP
Drew, JE
Elkord, E
El-Rayes, B
Feitelson, MA
Felsher, DW
Ferguson, LR
Fimognari, C
Firestone, GL
Frezza, C
Fujii, H
Fuster, MM
Generali, D
Georgakilas, AG
Gieseler, F
Gilbertson, M
Green, MF
Grue, B
Guha, G
Halicka, D
Helferich, WG
Heneberg, P
Hentosh, P
Hirschey, MD
Hofseth, LJ
Holcombe, RF
Honoki, K
Hsu, HY
Huang, GS
Jensen, LD
Jiang, WG
Jones, LW
Karpowicz, PA
Keith, WN
Kerkar, SP
Khan, GN
Khatami, M
Ko, YH
Kucuk, O
Kulathinal, RJ
Kumar, NB
Kwon, BS
Le, A
Lea, MA
Lee, HY
Lichtor, T
Lin, LT
Locasale, JW
Lokeshwar, BL
Longo, VD
Lyssiotis, CA
MacKenzie, KL
Malhotra, M
Marino, M
Martinez-Chantar, ML
Matheu, A
Maxwell, C
McDonnell, E
Meeker, AK
Mehrmohamadi, M
Mehta, K
Michelotti, GA
Mohammad, RM
Mohammed, SI
Morre, DJ
Muqbil, I
Muralidhar, V
Murphy, MP
Nagaraju, GP
Nahta, R
Niccolai, E
Nowsheen, S
Panis, C
Pantano, F
Parslow, VR
Pawelec, G
Pedersen, PL
Poore, B
Poudyal, D
Prakash, S
Prince, M
Raffaghello, L
Rathmell, JC
Rathmell, WK
Ray, SK
Reichrath, J
Rezazadeh, S
Ribatti, D
Ricciardiello, L
Robey, RB
Rodier, F
Rupasinghe, HPV
Russo, GL
Ryan, EP
Samadi, AK
Sanchez-Garcia, I
Sanders, AJ
Santini, D
Sarkar, M
Sasada, T
Saxena, NK
Shackelford, RE
Kumara, HMCS
Sharma, D
Shin, DM
Sidransky, D
Siegelin, MD
Signori, E
Singh, N
Sivanand, S
Sliva, D
Smythe, C
Spagnuolo, C
Stafforini, DM
Stagg, J
Subbarayan, PR
Sundin, T
Talib, WH
Thompson, SK
Tran, PT
Ungefroren, H
Vander Heiden, MG
Venkateswaran, V
Vinay, DS
Vlachostergios, PJ
Wang, ZW
Wellendx, KE
Whelan, RL
Yang, ES
Yang, HJ
Yang, XJ
Yaswen, P
Yedjou, C
Yin, X
Zhu, JY
Zollo, M
AF Block, Keith I.
Gyllenhaal, Charlotte
Lowe, Leroy
Amedei, Amedeo
Amin, A. R. M. Ruhul
Amin, Amr
Aquilano, Katia
Arbiser, Jack
Arreola, Alexandra
Arzumanyan, Alla
Ashraf, S. Salman
Azmi, Asfar S.
Benencia, Fabian
Bhakta, Dipita
Bilsland, Alan
Bishayeen, Anupam
Blain, Stacy W.
Block, Penny B.
Boosani, Chandra S.
Carey, Thomas E.
Carnero, Amancio
Carotenuto, Marianeve
Casey, Stephanie C.
Chakrabarti, Mrinmay
Chaturvedi, Rupesh
Chen, Georgia Zhuo
Chenx, Helen
Chen, Sophie
Chen, Yi Charlie
Choi, Beom K.
Ciriolo, Maria Rosa
Coley, Helen M.
Collins, Andrew R.
Connell, Marisa
Crawford, Sarah
Curran, Colleen S.
Dabrosin, Charlotta
Damia, Giovanna
Dasgupta, Santanu
DeBerardinis, Ralph J.
Decker, William K.
Dhawan, Punita
Diehl, Anna Mae E.
Dong, Jin-Tang
Dou, Q. Ping
Drew, Janice E.
Elkord, Eyad
El-Rayes, Bassel
Feitelson, Mark A.
Felsher, Dean W.
Ferguson, Lynnette R.
Fimognari, Carmela
Firestone, Gary L.
Frezza, Christian
Fujii, Hiromasa
Fuster, Mark M.
Generali, Daniele
Georgakilas, Alexandros G.
Gieseler, Frank
Gilbertson, Michael
Green, Michelle F.
Grue, Brendan
Guha, Gunjan
Halicka, Dorota
Helferich, William G.
Heneberg, Petr
Hentosh, Patricia
Hirschey, Matthew D.
Hofseth, Lorne J.
Holcombe, Randall F.
Honoki, Kanya
Hsu, Hsue-Yin
Huang, Gloria S.
Jensen, Lasse D.
Jiang, Wen G.
Jones, Lee W.
Karpowicz, Phillip A.
Keith, W. Nicol
Kerkar, Sid P.
Khan, Gazala N.
Khatami, Mahin
Ko, Young H.
Kucuk, Omer
Kulathinal, Rob J.
Kumar, Nagi B.
Kwon, Byoung S.
Le, Anne
Lea, Michael A.
Lee, Ho-Young
Lichtor, Terry
Lin, Liang-Tzung
Locasale, Jason W.
Lokeshwar, Bal L.
Longo, Valter D.
Lyssiotis, Costas A.
MacKenzie, Karen L.
Malhotra, Meenakshi
Marino, Maria
Martinez-Chantar, Maria L.
Matheu, Ander
Maxwell, Christopher
McDonnell, Eoin
Meeker, Alan K.
Mehrmohamadi, Mahya
Mehta, Kapil
Michelotti, Gregory A.
Mohammad, Ramzi M.
Mohammed, Sulma I.
Morre, D. James
Muqbil, Irfana
Muralidhar, Vinayak
Murphy, Michael P.
Nagaraju, Ganji Purnachandra
Nahta, Rita
Niccolai, Elena
Nowsheen, Somaira
Panis, Carolina
Pantano, Francesco
Parslow, Virginia R.
Pawelec, Graham
Pedersen, Peter L.
Poore, Brad
Poudyal, Deepak
Prakash, Satya
Prince, Mark
Raffaghello, Lizzia
Rathmell, Jeffrey C.
Rathmell, W. Kimryn
Ray, Swapan K.
Reichrath, Joerg
Rezazadeh, Sarallah
Ribatti, Domenico
Ricciardiello, Luigi
Robey, R. Brooks
Rodier, Francis
Rupasinghe, H. P. Vasantha
Russo, Gian Luigi
Ryan, Elizabeth P.
Samadi, Abbas K.
Sanchez-Garcia, Isidro
Sanders, Andrew J.
Santini, Daniele
Sarkar, Malancha
Sasada, Tetsuro
Saxena, Neeraj K.
Shackelford, Rodney E.
Kumara, H. M. C. Shantha
Sharma, Dipali
Shin, Dong M.
Sidransky, David
Siegelin, Markus David
Signori, Emanuela
Singh, Neetu
Sivanand, Sharanya
Sliva, Daniel
Smythe, Carl
Spagnuolo, Carmela
Stafforini, Diana M.
Stagg, John
Subbarayan, Pochi R.
Sundin, Tabetha
Talib, Wamidh H.
Thompson, Sarah K.
Tran, Phuoc T.
Ungefroren, Hendrik
Vander Heiden, Matthew G.
Venkateswaran, Vasundara
Vinay, Dass S.
Vlachostergios, Panagiotis J.
Wang, Zongwei
Wellendx, Kathryn E.
Whelan, Richard L.
Yang, Eddy S.
Yang, Huanjie
Yang, Xujuan
Yaswen, Paul
Yedjou, Clement
Yin, Xin
Zhu, Jiyue
Zollo, Massimo
TI Designing a broad-spectrum integrative approach for cancer prevention
and treatment
SO SEMINARS IN CANCER BIOLOGY
LA English
DT Review
DE Multi-targeted; Cancer hallmarks; Phytochemicals; Targeted therapy;
Integrative medicine
ID RANDOMIZED CONTROLLED-TRIALS; TEA POLYPHENOL
(-)-EPIGALLOCATECHIN-3-GALLATE; BOTANICAL DIETARY-SUPPLEMENTS;
TRADITIONAL CHINESE MEDICINE; CONTROLLED CLINICAL-TRIAL; METASTATIC
BREAST-CANCER; ENDOTHELIAL-CELL-GROWTH; III COLON-CANCER; PHASE-I TRIAL;
LOW-FAT DIETS
AB Targeted therapies and the consequent adoption of "personalized" oncology have achieved notable successes in some cancers; however, significant problems remain with this approach. Many targeted therapies are highly toxic, costs are extremely high, and most patients experience relapse after a few disease-free months. Relapses arise from genetic heterogeneity in tumors, which harbor therapy-resistant immortalized cells that have adopted alternate and compensatory pathways (i.e., pathways that are not reliant upon the same mechanisms as those which have been targeted). To address these limitations, an international task force of 180 scientists was assembled to explore the concept of a low-toxicity "broadspectrum" therapeutic approach that could simultaneously target many key pathways and mechanisms. Using cancer hallmark phenotypes and the tumor microenvironment to account for the various aspects of relevant cancer biology, interdisciplinary teams reviewed each hallmark area and nominated a wide range of high-priority targets (74 in total) that could be modified to improve patient outcomes. For these targets, corresponding low-toxicity therapeutic approaches were then suggested, many of which were phytochemicals. Proposed actions on each target and all of the approaches were further reviewed for known effects on other hallmark areas and the tumor microenvironment Potential contrary or procarcinogenic effects were found for 3.9% of the relationships between targets and hallmarks, and mixed evidence of complementary and contrary relationships was found for 7.1%. Approximately 67% of the relationships revealed potentially complementary effects, and the remainder had no known relationship. Among the approaches, 1.1% had contrary, 2.8% had mixed and 62.1% had complementary relationships. These results suggest that a broad-spectrum approach should be feasible from a safety standpoint. This novel approach has potential to be relatively inexpensive, it should help us address stages and types of cancer that lack conventional treatment, and it may reduce relapse risks. A proposed agenda for future research is offered. (C) 2015 The Authors. Published by Elsevier Ltd.
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[Amedei, Amedeo] Univ Florence, Dept Expt & Clin Med, Florence, Italy.
[Amin, Amr] Univ Florence, Dept Expt & Clin Med, Florence, Italy.
[Aquilano, Katia; Ciriolo, Maria Rosa] United Arab Emirates Univ, Coll Sci, Dept Biol, Al Ain, U Arab Emirates.
[Arreola, Alexandra; Rathmell, W. Kimryn] Univ Roma Tor Vergata, Dept Biol, Rome, Italy.
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[Benencia, Fabian] Wayne State Univ, Karmanos Canc Inst, Dept Oncol, Detroit, MI USA.
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RP Block, KI (reprint author), Block Ctr Integrat Canc Treatment, Skokie, IL 60077 USA.
EM drblock@blockmedical.com; Leroy.lowe@gettingtoknowcancer.org
RI Bhakta-Guha, Dipita/E-8076-2012; Ganji, Purna chandra N/D-4193-2011;
Karpowicz, Phillip/C-3334-2016; Robey, R. Brooks/J-7099-2013; Heneberg,
Petr/C-1881-2012; Mackenzie, Karen/F-1310-2011; IBIS,
CANCER/P-3323-2015; Keith, Nicol/D-3325-2009; Zollo,
Massimo/K-5857-2016; niccolai, elena/K-6091-2016; Ciriolo, Maria
/K-6572-2016; AQUILANO, KATIA/K-8888-2016; Jiang, Wen/B-1293-2010
OI Pantano, Francesco/0000-0002-2894-9686; Raffaghello,
Lizzia/0000-0003-2357-0607; Bhakta-Guha, Dipita/0000-0002-7144-3947;
Gieseler, Frank/0000-0001-6409-3822; RICCIARDIELLO,
LUIGI/0000-0003-2568-6208; SANCHEZ-GARCIA, ISIDRO/0000-0001-6989-9905;
Elkord, Eyad/0000-0002-3868-0318; Locasale, Jason/0000-0002-7766-3502;
Ganji, Purna chandra N/0000-0002-4989-5234; Robey, R.
Brooks/0000-0001-5059-3965; signori, emanuela/0000-0003-0286-7401;
Heneberg, Petr/0000-0002-0703-951X; Keith, Nicol/0000-0001-7862-3580;
Zollo, Massimo/0000-0002-0970-7243; niccolai, elena/0000-0002-9205-8079;
AQUILANO, KATIA/0000-0002-5905-9870; Jiang, Wen/0000-0002-3283-1111
FU Terry Fox Foundation Grant [TF-13-20]; UAEU Program for Advanced
Research (UPAR) [31S118]; NIH [AR47901, R21CA188818, R15 CA137499-01,
F32CA177139, P20RR016477, P20GM103434, R01CA170378, U54CA149145,
U54CA143907, R01-HL107652, R01CA166348, R01GM071725, R01 CA109335-04A1,
109511R01CA151304CA168997 A11106131R03CA1711326
1P01AT003961RO1 CA100816P01AG034906
R01AG020642P01AG034906-01A1R01HL108006]; NIH NRSA Grant
[F31CA154080]; NIH (NIAID) R01: Combination therapies for chronic HBV,
liver disease, and cancer [AI076535]; Sky Foundation Inc. Michigan;
University of Glasgow; Beatson Oncology Centre Fund; Spanish Ministry of
Economy and Competitivity, ISCIII [PI12/00137, RTICC: RD12/0036/0028];
FEDER from Regional Development European Funds (European Union),
Consejeria de Ciencia e Innovacion [CTS-6844, CTS-1848]; Consejeria de
Salud of the Junta de Andalucia [PI-0135-2010, PI-0306-2012]; ISCIII
[PIE13/0004]; FEDER funds; United Soybean Board; NIH NCCAM Grant
[K01AT007324]; NIH NCI Grant [R33 CA161873-02]; Michael Cuccione
Childhood Cancer Foundation Graduate Studentship; Ovarian and Prostate
Cancer Research Trust, UK; West Virginia Higher Education Policy
Commission/Division of Science Research; National Institutes of Health;
Italian Association for Cancer Research (AIRC) [IG10636, 15403]; GRACE
Charity, UK; Breast Cancer Campaign, UK; Michael Cuccione Childhood
Cancer Foundation Postdoctoral Fellowship; Connecticut State University;
Swedish Research Council; Swedish Research Society; University of Texas
Health Science Centre at Tyler, Elsa U. Pardee Foundation; CPRIT; Cancer
Prevention and Research Institute of Texas; NIH National Institute of
Diabetes and Digestive and Kidney Diseases (NIDDK); NIH National
Institute on Alcohol Abuse and Alcoholism (NIAAA); Gilead and Shire
Pharmaceuticals; NIH/NCI [1R01CA20009, 5R01CAl27258-05, R21CA184788, NIH
P30 CA22453, NCI RO1 28704]; Scottish Government's Rural and Environment
Science and Analytical Services Division; National Research Foundation;
United Arab Emirates University; Terry Fox Foundation; Novartis
Pharmaceutical; Aveo Pharmaceutical; Roche; Bristol Myers Squibb; Bayer
Pharmaceutical; Pfizer; Kyowa Kirin; NIH/NIAID Grant [A1076535];
Auckland Cancer Society; Cancer Society of New Zealand; NIH Public
Service Grant from the National Cancer Institute [CA164095]; Medical
Research Council CCU-Program Grant on cancer metabolism; EU Marie Curie
Reintegration Grant [MC-CIG-303514]; Greek National funds through the
Operational Program 'Educational and Lifelong Learning of the National
Strategic Reference Framework (NSRF)-Research Funding Program THALES
[MIS 379346]; COST Action CM1201 `Biomimetic Radical Chemistry'; Duke
University Molecular Cancer Biology T32 Training Grant; National
Sciences Engineering and Research Council Undergraduate Student Research
Award in Canada; Charles University in Prague projects [UNCE 204015,
PRVOUK P31/2012]; Czech Science Foundation projects [15-03834Y,
P301/12/1686]; Czech Health Research Council AZV project [15-32432A];
Internal Grant Agency of the Ministry of Health of the Czech Republic
project [NT13663-3/2012]; National Institute of Aging [P30AG028716-01];
NIH/NCI training grants to Duke University [T32-CA059365-19,
5T32-CA059365]; Ministry of Education, Culture, Sports, Science and
Technology, Japan [24590493]; Ministry of Health and Welfare
[CCMP101-RD-031, CCMP102-RD-112]; Tzu-Chi University of Taiwan
[61040055-10]; Svenska Sallskapet for Medicinsk Forskning; Cancer
Research Wales; Albert Hung Foundation; Fong Family Foundation; Welsh
Government A4B scheme; NIH NCI; University of Glasgow, Beatson Oncology
Centre Fund, CRUK [C301/A14762]; NIH Intramural Research Program;
National Science Foundation; American Cancer Society; National Cancer
Center [NCC-1310430-2]; National Research Foundation [NRF-2005-0093837];
Sol Goldman Pancreatic Cancer Research Fund Grant [80028595]; Lustgarten
Fund Grant [90049125, NIHR21CA169757]; Alma Toorock Memorial for Cancer
Research; National Research Foundation of Korea (NRF); Ministry of
Science, ICT & Future Planning (MSIP), Republic of Korea [2011-0017639,
2011-0030001]; Ministry of Education of Taiwan [TMUTOP103005-4];
International Life Sciences Institute; United States' Public Health
Services Grants [NIH R01CA156776]; VA-BLR&D Merit Review Grant
[5101-BX001517-02]; V Foundation; Pancreatic Cancer Action Network;
Damon Runyon Cancer Research Foundation; Children's Cancer Institute
Australia; University Roma Tre; Italian Association for Cancer Research
(AIRC-Grant) [IG15221]; Carlos III Health Institute; Feder funds [AM:
CP10/00539, PI13/02277]; Basque Foundation for Science (IKERBASQUE);
Marie Curie CIG Grant [2012/712404]; Canadian Institutes of Health
Research; Avon Foundation for Women [OBC-134038]; Canadian Institutes of
Health [MSH-136647, MOP 64308]; Bayer Healthcare System G4T
(Grants4Targets); NIH NIDDK; NIH NIAAA; Shire Pharmaceuticals;
Harvard-MIT Health Sciences and Technology Research Assistantship Award;
Italian Ministry of University; University of Italy; Auckland Cancer
Society Research Centre (ACSRC); German Federal Ministry of Education
and Research (Bundesministerium fur Bildung und Forschung, BMBF)
[16SV5536K]; European Commission [FP7 259679 "IDEAL"]; Cinque per Mille
dell'IRPEF-Finanziamento della Ricerca Sanitaria; European Union Seventh
Framework Programme (FP7) [278570]; AIRC [10216, 13837]; European
Community's Seventh Framework Program FP7 [311876]; Canadian Institute
for Health Research [MOP114962, MOP125857]; Fonds de Recherche Quebec
Sante [22624]; Terry Fox Research Institute [1030]; FEDER; MICINN
[SAF2012-32810]; Junta de Castilla y Leon [BIO/SA06/13]; ARIMMORA
project [FP7-ENV-2011]; European Union; NIH NIDDK [K01DK077137,
R03DK089130]; NIH NCI grants [R01CA131294, R21 CA155686]; Avon
Foundation; Breast Cancer Research Foundation Grant [90047965]; National
Institute of Health, NINDS Grant [K08NS083732]; AACR-National Brain
Tumor Society Career Development Award for Translational Brain Tumor
Research [13-20-23-SIEG]; Department of Science and Technology, New
Delhi, India [SR/FT/LS-063/2008]; Yorkshire Cancer Research; Wellcome
Trust, UK; Italian Ministry of Economy and Finance Project CAMPUS-QUARC,
within program FESR Campania Region; National Cancer Institute
[5P01CA073992]; IDEA Award from the Department of Defense
[W81XWH-12-1-0515]; Huntsman Cancer Foundation; University of Miami
Clinical and Translational Science Institute (CTSI) Pilot Research Grant
[CTSI-2013-P03]; SEEDS You Choose Awards; DoD [W81XVVH-11-1-0272,
W81XWH-13-1-0182]; Kimmel Translational Science Award [SKF-13-021]; ACS
Scholar award [122688-RSG-12-196-01-TBG]; National Cancer Institute,
Pancreatic Cancer Action Network, Pew Charitable Trusts; American
Diabetes Association; Elsa U. Pardee Foundation; Scientific Research
Foundation for the Returned Oversea Scholars, State Education Ministry
and Scientific and Technological Innovation Project, Harbin
[2012RFLX5011]; United States National Institutes of Health [ES019458];
California Breast Cancer Research Program [17UB-8708]; National
Institutes of Health through the RCMI-Center for Environmental Health
[G1200MD007581]; NIH/National Heart, Lung, and Blood Institute Training
Grant [T32HL098062]; European FP7-TuMIC [HEALTH-F2-2008-201662]; Italian
Association for Cancer research (AIRC) Grant IG [11963]; Regione
Campania L.R:N.5; European National Funds [PON01-02388/1 2007-2013]
FX Amr Amin was funded by Terry Fox Foundation Grant # TF-13-20 and UAEU
Program for Advanced Research (UPAR) #31S118; Jack Arbiser was funded by
NIH AR47901; Alexandra Arreola was funded by NIH NRSA Grant F31CA154080;
Alla Arzumanyan was funded by NIH (NIAID) R01: Combination therapies for
chronic HBV, liver disease, and cancer (AI076535); Work in the lab of
Asfar S. Azmi is supported by NIH R21CA188818 as well as from Sky
Foundation Inc. Michigan; Fabian Benencia was supported by NIH Grant R15
CA137499-01; Alan Bilsland was supported by the University of Glasgow,
Beatson Oncology Centre Fund, CRUK (www. cancerresearchuk.org) Grant
C301/A14762; Amancio Carnero was supported by grants from the Spanish
Ministry of Economy and Competitivity, ISCIII (Fis: PI12/00137, RTICC:
RD12/0036/0028) co-funded by FEDER from Regional Development European
Funds (European Union), Consejeria de Ciencia e Innovacion (CTS-6844 and
CTS-1848) and Consejeria de Salud of the Junta de Andalucia
(PI-0135-2010 and PI-0306-2012). His work on this project has also been
made possible thanks to the Grant PIE13/0004 co-funded by the ISCIII and
FEDER funds; Stephanie C. Casey was supported by NIH Grant F32CA177139;
Mrinmay Chakrabarti was supported by the United Soybean Board; Rupesh
Chaturvedi was supported by an NIH NCCAM Grant (K01AT007324); Georgia
Zhuo Chen was supported by an NIH NCI Grant (R33 CA161873-02); Helen
Chen acknowledges financial support from the Michael Cuccione Childhood
Cancer Foundation Graduate Studentship; Sophie Chen acknowledges
financial support from the Ovarian and Prostate Cancer Research Trust,
UK; Yi Charlie Chen acknowledges financial support from the West
Virginia Higher Education Policy Commission/Division of Science
Research, his research was also supported by NIH grants (P20RR016477 and
P20GM103434) from the National Institutes of Health awarded to the West
Virginia IDeA Network of Biomedical Research Excellence; Maria Rosa
Ciriolo was partially supported by the Italian Association for Cancer
Research (AIRC) Grants #IG10636 and #15403; Helen M. Coley acknowledges
financial support from the GRACE Charity, UK and the Breast Cancer
Campaign, UK; Marisa Connell was supported by a Michael Cuccione
Childhood Cancer Foundation Postdoctoral Fellowship; Sarah Crawford was
supported by a research grant from Connecticut State University;
Charlotta Dabrosin acknowledges financial support from the Swedish
Research Council and the Swedish Research Society; Giovanna Damia
gratefully acknowledges the generous contributions of The Italian
Association for Cancer Research (IG14536 to G.D.); Santanu Dasgupta
gratefully acknowledges the support of the University of Texas Health
Science Centre at Tyler, Elsa U. Pardee Foundation; William K. Decker
was supported in part by CPRIT, the Cancer Prevention and Research
Institute of Texas; Anna Mae E. Diehl was supported by NIH National
Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), the NIH
National Institute on Alcohol Abuse and Alcoholism (NIAAA), Gilead and
Shire Pharmaceuticals; Q. Ping Dou was partially supported by NIH/NCI
(1R01CA20009, 5R01CAl27258-05 and R21CA184788), and NIH P30 CA22453 (to
Karmanos Cancer Institute); Janice E.; Drew was supported by the
Scottish Government's Rural and Environment Science and Analytical
Services Division; Eyad Elkord thanks the National Research Foundation,
United Arab Emirates University and the Terry Fox Foundation for
supporting research projects in his lab; Bassel El-Rayes was supported
by Novartis Pharmaceutical, Aveo Pharmaceutical, Roche, Bristol Myers
Squibb, Bayer Pharmaceutical, Pfizer, and Kyowa Kirin; Mark A. Feitelson
was supported by NIH/NIAID Grant A1076535; Dean W. Felsher was supported
by NIH grants (R01CA170378, U54CA149145, and U54CA143907); Lynnette R
Ferguson was financially supported by the Auckland Cancer Society and
the Cancer Society of New Zealand; Gary L. Firestone was supported by
NIH Public Service Grant CA164095 awarded from the National Cancer
Institute; Christian Frezza "would like to acknowledge funding from a
Medical Research Council CCU-Program Grant on cancer metabolism, and a
unique applicant AICR project grant"; Mark M. Fuster was supported by
NIH Grant R01-HL107652; Alexandros G. Georgakilas was supported by an EU
Marie Curie Reintegration Grant MC-CIG-303514, Greek National funds
through the Operational Program 'Educational and Lifelong Learning of
the National Strategic Reference Framework (NSRF)-Research Funding
Program THALES (Grant number MIS 379346) and COST Action CM1201
`Biomimetic Radical Chemistry'; Michelle F. Green was supported by a
Duke University Molecular Cancer Biology T32 Training Grant; Brendan
Grue was supported by a National Sciences Engineering and Research
Council Undergraduate Student Research Award in Canada; Dorota Halicka
was supported by by NIH NCI grant NCI RO1 28704; Petr Heneberg was
supported by the Charles University in Prague projects UNCE 204015 and
PRVOUK P31/2012, by the Czech Science Foundation projects 15-03834Y and
P301/12/1686, by the Czech Health Research Council AZV project
15-32432A, and by the Internal Grant Agency of the Ministry of Health of
the Czech Republic project NT13663-3/2012; Matthew D. Hirschey wishes to
acknowledge Duke University Institutional Support, the Duke Pepper Older
Americans Independence Center (OAIC) Program in Aging Research supported
by the National Institute of Aging (P30AG028716-01) and NIH/NCI training
grants to Duke University (T32-CA059365-19 and 5T32-CA059365); Lorne J.
Hofseth was supported by NIH grants (1R01CA151304,1R03CA1711326, and
1P01AT003961); Kanya Honoki was supported in part by the grant from the
Ministry of Education, Culture, Sports, Science and Technology, Japan
(No. 24590493); Hsue-Yin Hsu was supported in part by grants from the
Ministry of Health and Welfare (CCMP101-RD-031 and CCMP102-RD-112) and
Tzu-Chi University (61040055-10) of Taiwan; Lasse D. Jensen was
supported by Svenska Sallskapet for Medicinsk Forskning, Gosta Fraenkels
Stiftelse, Ak.e Wibergs Stiftelse, kopings Universitet and the
Karolinska Institute, Sweden; Wen G. Jiang wishes to ackOllie och Elof
Ericssons Stiftelse, Linnowledge the support by Cancer Research Wales,
the Albert Hung Foundation, the Fong Family Foundation, and Welsh
Government A4B scheme; Lee W. Jones was supported in part by grants from
the NIH NCI; W Nicol Keith was supported by the University of Glasgow,
Beatson Oncology Centre Fund, CRUK (www. cancerresearchuk.org) Grant
C301/A14762; Sid P. Kerkar was supported by the NIH Intramural Research
Program; Rob J. Kulathinal was supported by the National Science
Foundation, and the American Cancer Society; Byoung S.; Kwon was
supported in part by National Cancer Center (NCC-1310430-2) and National
Research Foundation (NRF-2005-0093837); Anne Le was supported by Sol
Goldman Pancreatic Cancer Research Fund Grant 80028595, a Lustgarten
Fund Grant 90049125 and Grant NIHR21CA169757 (to Anne Le); Michael A.
Lea was funded by the The Alma Toorock Memorial for Cancer Research;
Ho-Young Lee This work was supported by grants from the National
Research Foundation of Korea (NRF), the Ministry of Science, ICT &
Future Planning (MSIP), Republic of Korea (Nos. 2011-0017639 and
2011-0030001) and by a NIH Grant RO1 CA100816; Liang-Tzung Lin was
supported in part by a grant from the Ministry of Education of Taiwan
(TMUTOP103005-4); Jason W. Locasale acknowledges support from NIH awards
(CA168997 and A1110613) and the International Life Sciences Institute;
Bal L. Lokeshwar was supported in part by United States' Public Health
Services Grants: NIH R01CA156776 and VA-BLR&D Merit Review Grant No.
5101-BX001517-02; Valter D. Longo acknowleages support from NIH awards
(P01AG034906 and R01AG020642) and from the V Foundation; Costas A.
Lyssiotis was funded in part by the Pancreatic Cancer Action Network as
a Pathway to Leadership Fellow and through a Dale F. Frey Breakthrough
award from the Damon Runyon Cancer Research Foundation; Karen L.
MacKenzie wishes to acknowledge the support from the Children's Cancer
Institute Australia (affiliated with the University of New South Wales,
Australia and the Sydney Children's Hospital Network); Maria Marino was
supported by grant from University Roma Tre to M.M. (CLA 2013) and by
the Italian Association for Cancer Research (AIRC-Grant #IG15221); Ander
Matheu is funded by Carlos III Health Institute and Feder funds (AM:
CP10/00539, PI13/02277), Basque Foundation for Science (IKERBASQUE) and
Marie Curie CIG Grant (AM: 2012/712404); Christopher Maxwell was
supported by funding from the Canadian Institutes of Health Research, in
partnership with the Avon Foundation for Women (OBC-134038) and the
Canadian Institutes of Health Research New Investigator Salary Award
(MSH-136647); Eoin McDonnell received Duke University Institutional
Support; Kapil Mehta was supported by Bayer Healthcare System G4T
(Grants4Targets); Gregory A. Michelotti received support from NIH NIDDK,
NIH NIAAA, and Shire Pharmaceuticals; Vinayak Muralidhar was supported
by the Harvard-MIT Health Sciences and Technology Research Assistantship
Award; Elena Niccolai was supported by the Italian Ministry of
University and the University of Italy; Virginia R. Parslow gratefully
acknowledges the financial support of the Auckland Cancer Society
Research Centre (ACSRC); Graham Pawelec was supported by the German
Federal Ministry of Education and Research (Bundesministerium fur
Bildung und Forschung, BMBF) Grant number 16SV5536K, and by the European
Commission (FP7 259679 "IDEAL"); Peter L. Pedersen was supported by NIH
Grant CA-10951; Brad Poore was supported by Sol Goldman Pancreatic
Cancer Research Fund Grant 80028595, the Lustgarten Fund Grant 90049125,
and Grant NIHR21CA169757 (to Anne Le); Satya Prakash was supported by a
Canadian Institutes of Health Research Grant (MOP 64308); Lizzia
Raffaghello was supported by an NIH Grant (P01AG034906-01A1) and Cinque
per Mille dell'IRPEF-Finanziamento della Ricerca Sanitaria; Jeffrey C.
Rathmell was supported by an NIH Grant (R01HL108006); Swapan K.; Ray was
supported by the United Soybean Board; Domenico Ribatti received funding
from the European Union Seventh Framework Programme (FP7/2007-2013)
under Grant agreement no 278570; Luigi Ricciardiello was supported by
the AIRC Investigator Grants 10216 and 13837, and the European
Community's Seventh Framework Program FP7/2007-2013 under Grant
agreement 311876; Francis Rodier acknowledges the support of the
Canadian Institute for Health Research (FR: MOP114962, MOP125857), Fonds
de Recherche Quebec Sante (FR: 22624), and the Terry Fox Research
Institute (FR: 1030); Gian Luigi Russo contributed to this effort while
participating in the Fulbright Research Scholar Program 2013-14; Isidro
Sanchez-Garcia is partially supported by FEDER and by MICINN
(SAF2012-32810), by NIH Grant (R01 CA109335-04A1), by Junta de Castilla
y Leon (BIO/SA06/13) and by the ARIMMORA project (FP7-ENV-2011, European
Union Seventh Framework Program). Isidro SanchezGarcia's lab is also a
member of the EuroSyStem and the DECIDE Network funded by the European
Union under the FP7 program; Andrew J. Sanders wishes to acknowledge the
support by Cancer Research Wales, the Albert Hung Foundation, the Fong
Family Foundation, and Welsh Government A4B scheme; Neeraj K. Saxena was
supported by grant funding from NIH NIDDK (K01DK077137, R03DK089130);
Dipali Sharma was partially funded by NIH NCI grants (R01CA131294, R21
CA155686), the Avon Foundation and a Breast Cancer Research Foundation
Grant (90047965); Markus David Siegelin received funding from National
Institute of Health, NINDS Grant K08NS083732, and the 2013 AACR-National
Brain Tumor Society Career Development Award for Translational Brain
Tumor Research, Grant Number 13-20-23-SIEG; Neetu Singh was supported by
funds from the Department of Science and Technology (SR/FT/LS-063/2008),
New Delhi, India; Carl Smythe was supported by Yorkshire Cancer Research
and The Wellcome Trust, UK; Carmela Spagnuolo was supported by funding
from Project C.I.S.I.A., act n. 191/2009 from the Italian Ministry of
Economy and Finance Project CAMPUS-QUARC, within program FESR Campania
Region 2007/2013, objectives 2.1, 2.2; Diana M. Stafforini was supported
by grants from the National Cancer Institute (5P01CA073992), IDEA Award
W81XWH-12-1-0515 from the Department of Defense, and by the Huntsman
Cancer Foundation; John Stagg was supported by the Canadian Institutes
of Health Research; Pochi R. Subbarayan was supported by the University
of Miami Clinical and Translational Science Institute (CTSI) Pilot
Research Grant (CTSI-2013-P03) and SEEDS You Choose Awards; Phuoc T.
Tran was funded by the DoD (W81XVVH-11-1-0272 and W81XWH-13-1-0182), a
Kimmel Translational Science Award (SKF-13-021), an ACS Scholar award
(122688-RSG-12-196-01-TBG) and the NIH (R01CA166348); Kathryn E. Wellen
receives funding from the National Cancer Institute, Pancreatic Cancer
Action Network, Pew Charitable Trusts, American Diabetes Association,
and Elsa U.; Pardee Foundation; Huanjie Yang was partially supported by
the Scientific Research Foundation for the Returned Oversea Scholars,
State Education Ministry and Scientific and Technological Innovation
Project, Harbin (2012RFLX5011); Paul Yaswen was supported by funding
from the United States National Institutes of Health (ES019458) and the
California Breast Cancer Research Program (17UB-8708); Clement Yedjou
was supported by a grant from the National Institutes of Health (Grant #
G1200MD007581), through the RCMI-Center for Environmental Health; Xin
Yin was supported by NIH/National Heart, Lung, and Blood Institute
Training Grant T32HL098062.; Jiyue Zhu was supported by NIH Grant
R01GM071725; Massimo Zollo was supported by the European FP7-TuMIC
HEALTH-F2-2008-201662, the Italian Association for Cancer research
(AIRC) Grant IG # 11963 and the Regione Campania L.R:N.5, the European
National Funds PON01-02388/1 2007-2013.
NR 261
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PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 1044-579X
J9 SEMIN CANCER BIOL
JI Semin. Cancer Biol.
PD DEC
PY 2015
VL 35
SU S
BP S276
EP S304
DI 10.1016/j.semcancer.2015.09.007
PG 29
WC Oncology
SC Oncology
GA CY7WG
UT WOS:000366619400013
PM 26590477
ER
PT J
AU Yaswen, P
MacKenzie, KL
Keith, WN
Hentosh, P
Rodier, F
Zhu, JY
Firestone, GL
Matheu, A
Carnero, A
Bilsland, A
Sundin, T
Honoki, K
Fujii, H
Georgakilas, AG
Amedei, A
Amin, A
Helferich, B
Boosani, CS
Guha, G
Ciriolo, MR
Chen, S
Mohammed, SI
Azmi, AS
Bhakta, D
Halicka, D
Niccolai, E
Aquilano, K
Ashraf, SS
Nowsheen, S
Yang, XJ
AF Yaswen, Paul
MacKenzie, Karen L.
Keith, W. Nicol
Hentosh, Patricia
Rodier, Francis
Zhu, Jiyue
Firestone, Gary L.
Matheu, Ander
Carnero, Amancio
Bilsland, Alan
Sundin, Tabetha
Honoki, Kanya
Fujii, Hiromasa
Georgakilas, Alexandros G.
Amedei, Amedeo
Amin, Amr
Helferich, Bill
Boosani, Chandra S.
Guha, Gunjan
Ciriolo, Maria Rosa
Chen, Sophie
Mohammed, Sulma I.
Azmi, Asfar S.
Bhakta, Dipita
Halicka, Dorota
Niccolai, Elena
Aquilano, Katia
Ashraf, S. Salman
Nowsheen, Somaira
Yang, Xujuan
TI Therapeutic targeting of replicative immortality
SO SEMINARS IN CANCER BIOLOGY
LA English
DT Review
DE Senescence; Telomerase; Oncogenic stress; p53; pRB
ID TELOMERASE-REVERSE-TRANSCRIPTASE; PROSTATE-CANCER CELLS;
ONCOGENE-INDUCED SENESCENCE; DNA-DAMAGE RESPONSE; CHRONIC
LYMPHOCYTIC-LEUKEMIA; DEPENDENT KINASE INHIBITOR; HUMAN BREAST-CANCER;
MAMMARY EPITHELIAL-CELLS; NORMAL HUMAN FIBROBLASTS; NF-KAPPA-B
AB One of the hallmarks of malignant cell populations is the ability to undergo continuous proliferation. This property allows clonal lineages to acquire sequential aberrations that can fuel increasingly autonomous growth, invasiveness, and therapeutic resistance. Innate cellular mechanisms have evolved to regulate replicative potential as a hedge against malignant progression. When activated in the absence of normal terminal differentiation cues, these mechanisms can result in a state of persistent cytostasis. This state, termed "senescence," can be triggered by intrinsic cellular processes such as telomere dysfunction and oncogene expression, and by exogenous factors such as DNA damaging agents or oxidative environments. Despite differences in upstream signaling, senescence often involves convergent interdependent activation of tumor suppressors p53 and p16/pRB, but can be induced, albeit with reduced sensitivity, when these suppressors are compromised. Doses of conventional genotoxic drugs required to achieve cancer cell senescence are often much lower than doses required to achieve outright cell death. Additional therapies, such as those targeting cyclin dependent kinases or components of the PI3K signaling pathway, may induce senescence specifically in cancer cells by circumventing defects in tumor suppressor pathways or exploiting cancer cells' heightened requirements for telomerase. Such treatments sufficient to induce cancer cell senescence could provide increased patient survival with fewer and less severe side effects than conventional cytotoxic regimens. This positive aspect is countered by important caveats regarding senescence reversibility, genomic instability, and paracrine effects that may increase heterogeneity and adaptive resistance of surviving cancer cells. Nevertheless, agents that effectively disrupt replicative immortality will likely be valuable components of new combinatorial approaches to cancer therapy. (C) 2015 The Authors. Published by Elsevier Ltd.
C1 [Yaswen, Paul] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
[MacKenzie, Karen L.] Childrens Canc Inst Australia, Kensington, NSW, Australia.
[Keith, W. Nicol; Bilsland, Alan] Univ Glasgow, Glasgow, Lanark, Scotland.
[Hentosh, Patricia] Old Dominion Univ, Norfolk, VA USA.
[Rodier, Francis] Univ Montreal, Montreal, PQ, Canada.
[Zhu, Jiyue] Washington State Univ, Coll Pharm, Pullman, WA 99164 USA.
[Firestone, Gary L.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Matheu, Ander] Biodonostia Inst, Gipuzkoa, Spain.
[Carnero, Amancio] Univ Seville, Consejo Super Invest Cient, HUVR, Inst Biomed Sevilla, Seville, Spain.
[Sundin, Tabetha] Sentara Healthcare, Norfolk, VA USA.
[Honoki, Kanya; Fujii, Hiromasa] Nara Med Univ, Kashihara, Nara 634, Japan.
[Georgakilas, Alexandros G.] Natl Tech Univ Athens, Athens, Greece.
[Amedei, Amedeo; Niccolai, Elena] Univ Florence, Florence, Italy.
[Amin, Amr; Ashraf, S. Salman] United Arab Emirates Univ, Al Ain, U Arab Emirates.
[Amin, Amr; Ashraf, S. Salman] Cairo Univ, Cairo, Egypt.
[Helferich, Bill; Yang, Xujuan] Univ Illinois, Champaign, IL 61820 USA.
[Boosani, Chandra S.] Creighton Univ, Omaha, NE 68178 USA.
[Guha, Gunjan; Bhakta, Dipita] SASTRA Univ, Thanjavur, Tamil Nadu, India.
[Ciriolo, Maria Rosa; Aquilano, Katia] Univ Roma Tor Vergata, Rome, Italy.
[Chen, Sophie] Ovarian & Prostate Canc Res Trust, Guildford, Surrey, England.
[Mohammed, Sulma I.] Purdue Univ, W Lafayette, IN 47907 USA.
[Azmi, Asfar S.] Wayne State Univ, Karmanos Canc Inst, Detroit, MI USA.
[Halicka, Dorota] New York Med Coll, Valhalla, NY 10595 USA.
[Nowsheen, Somaira] Mayo Clin, Rochester, MN USA.
RP Yaswen, P (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM p_yaswen@lbl.gov; k.mackenzie@unsw.edu.au; nicol.keith@glasgow.ac.uk;
hentoshp@hotmail.com; rodierf@mac.com; jiyue.zhu@wsu.edu;
glfire@berkeley.edu; ander.matheu@biodonostia.org; acarnero@us.es;
Alan.Bilsland@glasgow.ac.uk; trsundin@sentara.com
RI AQUILANO, KATIA/K-8888-2016; Bhakta-Guha, Dipita/E-8076-2012; Mackenzie,
Karen/F-1310-2011; IBIS, CANCER/P-3323-2015; Keith, Nicol/D-3325-2009;
niccolai, elena/K-6091-2016; Ciriolo, Maria /K-6572-2016
OI AQUILANO, KATIA/0000-0002-5905-9870; Bhakta-Guha,
Dipita/0000-0002-7144-3947; Bilsland, Alan/0000-0003-0957-3908; Keith,
Nicol/0000-0001-7862-3580; niccolai, elena/0000-0002-9205-8079;
FU United States National Institutes of Health [ES019458, CA164095,
GM071725]; California Breast Cancer Research Program [17UB-8708]; Cancer
Research UK [C301/A14762]; University of Glasgow; Canadian Institute for
Health Research [MOP114962]; Fonds de Recherche Quebec Sante [22624];
W.W. Smith Charitable Trust; Carlos III Health Institute [CP10/00539];
Basque Foundation for Science (IKERBASQUE); Spanish Ministry of Economy
and Competitivity, ISCIII [PI12/00137, RD12/0036/0028]; Regional
Development European Funds; Consejeria de Ciencia e Innovacion
[CTS-1848]; Consejeria de Salud of the Junta de Andalucia
[PI-0306-2012]; EU [MC-CIG-303514]; Greek National funds [MIS 379346];
COST Action grant [CM1201]; Italian Ministry of University; Japan
Ministry of Education Culture Sports Science and Technology [24590493];
Italian Ministry of Education Universities and Research grant [MIUR-PRIN
20125S38FA_002]; Italian Ministry of Health [GR-2011-02348047]; Italian
Association for Cancer Research; Ovarian and Prostate Cancer Research
Trust in the United Kingdom; Terry Fox Foundation; Zayed Center for
Health Sciences; Al-Jalila Foundation; University of Italy; Marie Curie
CIG grant [2012/712404]
FX The authors thank members of Getting to Know Cancer for insightful
discussion. Funding was provided by the United States National
Institutes of Health (PY: ES019458, GF: CA164095, JZ: GM071725),
California Breast Cancer Research Program (PY: 17UB-8708), Cancer
Research UK (WNK: C301/A14762), University of Glasgow (WNK), Canadian
Institute for Health Research (FR: MOP114962), Fonds de Recherche Quebec
Sante (FR: 22624), W.W. Smith Charitable Trust (JZ), Carlos III Health
Institute (AM: CP10/00539), Basque Foundation for Science (IKERBASQUE)
and Marie Curie CIG grant (AM: 2012/712404), the Spanish Ministry of
Economy and Competitivity, ISCIII (AC: PI12/00137, RTICC:
RD12/0036/0028), Regional Development European Funds (AC), Consejeria de
Ciencia e Innovacion (AC: CTS-1848), and Consejeria de Salud of the
Junta de Andalucia (AC: PI-0306-2012). Children's Cancer Institute
Australia is affiliated with the University of New South Wales and
Sydney Children's Hospital Network (KM).; Funding for the
cross-validation team was provided by EU Marie Curie Reintegration grant
MC-CIG-303514 (AGG), Greek National funds grant MIS 379346 (AGG), COST
Action grant CM1201 (AGG), Italian Ministry of University and the
University of Italy (AA, EN), Japan Ministry of Education Culture Sports
Science and Technology grant 24590493 (KH), Italian Ministry of
Education Universities and Research grant MIUR-PRIN 20125S38FA_002 (KA),
Italian Ministry of Health grant GR-2011-02348047 (KA), Italian
Association for Cancer Research (MRC), Ovarian and Prostate Cancer
Research Trust in the United Kingdom (SC), Terry Fox Foundation (AA),
Zayed Center for Health Sciences (AA), and Al-Jalila Foundation (AA).
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J9 SEMIN CANCER BIOL
JI Semin. Cancer Biol.
PD DEC
PY 2015
VL 35
SU S
BP S104
EP S128
DI 10.1016/j.semcancer.2015.03.007
PG 25
WC Oncology
SC Oncology
GA CY7WG
UT WOS:000366619400006
PM 25869441
ER
PT J
AU Hill, KK
Xie, G
Foley, BT
Smith, TJ
AF Hill, K. K.
Xie, G.
Foley, B. T.
Smith, T. J.
TI Genetic diversity within the botulinum neurotoxin-producing bacteria and
their neurotoxins
SO TOXICON
LA English
DT Article; Proceedings Paper
CT TOXINS 2015 Basic Science and Clinical Aspects of Botulinum and Other
Neurotoxins
CY JAN 14-17, 2015
CL Lisbon, PORTUGAL
SP Intl Neurotoxin Assoc (INA)
DE Genetic diversity; Botulinum neurotoxin; Clostridium botulinum
ID II CLOSTRIDIUM-BOTULINUM; C-NEUROTOXIN; E STRAINS; CLUSTER;
ORGANIZATION; SEQUENCES; COMPLEX
AB The recent availability of multiple Clostridium botulinum genomic sequences has initiated a new genomics era that strengthens our understanding of the bacterial species that produce botulinum neurotoxins (BoNTs). Analysis of the genomes has reinforced the historical Group I-VI designations and provided evidence that the bont genes can be located within the chromosome, phage or plasmids. The sequences provide the opportunity to examine closely the variation among the toxin genes, the composition and organization of the toxin complex, the regions flanking the toxin complex and the location of the toxin within different bacterial strains. These comparisons provide evidence of horizontal gene transfer and site-specific insertion and recombination events that have contributed to the variation observed among the neurotoxins. Here, examples that have contributed to the variation observed in serotypes A-H strains are presented to illustrate the mechanisms that have contributed to their variation. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Hill, K. K.; Xie, G.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
[Foley, B. T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Smith, T. J.] US Army, Med Res Inst Infect Dis, Mol & Translat Sci Div, Ft Detrick, MD 21702 USA.
RP Hill, KK (reprint author), Los Alamos Natl Lab, Biosci Div, MS M88, Los Alamos, NM 87545 USA.
EM khill@lanl.gov
OI Foley, Brian/0000-0002-1086-0296; xie, gary/0000-0002-9176-924X
FU NIH/NIAID [U01 AI056493]
FX This research was partially funded by a grant from NIH/NIAID U01
AI056493. The opinions, interpretations, conclusions, and
recommendations are those of the authors and are not necessarily
endorsed by the U.S. Army.
NR 31
TC 8
Z9 8
U1 2
U2 11
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0041-0101
J9 TOXICON
JI Toxicon
PD DEC 1
PY 2015
VL 107
SI SI
BP 2
EP 8
DI 10.1016/j.toxicon.2015.09.011
PN A
PG 7
WC Pharmacology & Pharmacy; Toxicology
SC Pharmacology & Pharmacy; Toxicology
GA CY6SP
UT WOS:000366539400002
PM 26368006
ER
PT J
AU Lee, K
Lam, KH
Kruel, AM
Mahrhold, S
Perry, K
Cheng, LW
Rummel, A
Jin, RS
AF Lee, Kwangkook
Lam, Kwok-Ho
Kruel, Anna-Magdalena
Mahrhold, Stefan
Perry, Kay
Cheng, Luisa W.
Rummel, Andreas
Jin, Rongsheng
TI Inhibiting oral intoxication of botulinum neurotoxin A complex by
carbohydrate receptor mimics
SO TOXICON
LA English
DT Article; Proceedings Paper
CT TOXINS 2015 Basic Science and Clinical Aspects of Botulinum and Other
Neurotoxins
CY JAN 14-17, 2015
CL Lisbon, PORTUGAL
SP Intl Neurotoxin Assoc (INA)
DE Botulinum neurotoxin; Hemagglutinin; Progenitor toxin complex;
Lactulose; Carbohydrate receptor; Inhibitor
ID PROGENITOR TOXIN COMPLEX; CRYSTAL-STRUCTURE; E-CADHERIN; BINDING;
PURIFICATION; TOXICITIES; AGENTS; CELLS; HOST
AB Botulinum neurotoxins (BoNTs) cause the disease botulism manifested by flaccid paralysis that could be fatal to humans and animals. Oral ingestion of the toxin with contaminated food is one of the most common routes for botulism. BoNT assembles with several auxiliary proteins to survive in the gastrointestinal tract and is subsequently transported through the intestinal epithelium into the general circulation. Several hemagglutinin proteins form a multi-protein complex (HA complex) that recognizes host glycans on the intestinal epithelial cell surface to facilitate BoNT absorption. Blocking carbohydrate binding to the HA complex could significantly inhibit the oral toxicity of BoNT. Here, we identify lactulose, a galactose-containing non-digestible sugar commonly used to treat constipation, as a prototype inhibitor against oral BoNT/A intoxication. As revealed by a crystal structure, lactulose binds to the HA complex at the same site where the host galactose-containing carbohydrate receptors bind. In vitro assays using intestinal Caco-2 cells demonstrated that lactulose inhibits HA from compromising the integrity of the epithelial cell monolayers and blocks the internalization of HA. Furthermore, co-administration of lactulose significantly protected mice against BoNT/A oral intoxication in vivo. Taken together, these data encourage the development of carbohydrate receptor mimics as a therapeutic intervention to prevent BoNT oral intoxication. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Lee, Kwangkook; Lam, Kwok-Ho; Jin, Rongsheng] Univ Calif Irvine, Dept Physiol & Biophys, Irvine, CA 92697 USA.
[Kruel, Anna-Magdalena; Mahrhold, Stefan; Rummel, Andreas] Hannover Med Sch, Inst Toxikol, D-30623 Hannover, Germany.
[Perry, Kay] Cornell Univ, Argonne Natl Lab, NE CAT, Argonne, IL 60439 USA.
[Perry, Kay] Cornell Univ, Argonne Natl Lab, Dept Chem & Chem Biol, Argonne, IL 60439 USA.
[Cheng, Luisa W.] ARS, Foodbome Toxin Detect & Prevent Res Unit, Western Reg Res Ctr, USDA, Albany, CA 94710 USA.
RP Rummel, A (reprint author), Hannover Med Sch, Inst Toxikol, D-30623 Hannover, Germany.
EM rummel.andreas@mh-hannover.de; r.jin@uci.edu
OI Jin, Rongsheng/0000-0003-0348-7363
FU National Institute of Allergy and Infectious Diseases (NIAID)
[R01AI091823]; Swiss Federal Office for Civil Protection BABS
[353003325]; United States Department of Agriculture, Agricultural
Research Service, National Program project [NP108, CRIS
5325-42000-048-00D]; National Institute of General Medical Sciences [P41
GM103403]; U.S. DOE [DE-AC02-06CH11357]
FX This work was partly supported by National Institute of Allergy and
Infectious Diseases (NIAID) grant R01AI091823 to R.J. and by the Swiss
Federal Office for Civil Protection BABS #353003325 to A.R.; L.W.C. was
funded by the United States Department of Agriculture, Agricultural
Research Service, National Program project NP108, CRIS
5325-42000-048-00D. NECAT at the Advanced Photon Source (APS) is
supported by a grant from the National Institute of General Medical
Sciences (P41 GM103403). Use of the APS, an Office of Science User
Facility operated for the U.S. Department of Energy (DOE) Office of
Science by Argonne National Laboratory, was supported by the U.S. DOE
under Contract No. DE-AC02-06CH11357. The atomic coordinates and
structure factors of the HA17-HA33-lactulose and HA17-HA33-IPTG
complexes have been deposited in the Protein Data Bank under the
accession codes 5BQU and 5BP5, respectively.
NR 37
TC 3
Z9 3
U1 1
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0041-0101
J9 TOXICON
JI Toxicon
PD DEC 1
PY 2015
VL 107
SI SI
BP 43
EP 49
DI 10.1016/j.toxicon.2015.08.003
PN A
PG 7
WC Pharmacology & Pharmacy; Toxicology
SC Pharmacology & Pharmacy; Toxicology
GA CY6SP
UT WOS:000366539400007
PM 26272706
ER
PT J
AU Michaletz, ST
Weiser, MD
Zhou, JZ
Kaspari, M
Helliker, BR
Enquist, BJ
AF Michaletz, Sean T.
Weiser, Michael D.
Zhou, Jizhong
Kaspari, Michael
Helliker, Brent R.
Enquist, Brian J.
TI Plant Thermoregulation: Energetics, Trait-Environment Interactions, and
Carbon Economics
SO TRENDS IN ECOLOGY & EVOLUTION
LA English
DT Article
ID REBUILDING COMMUNITY ECOLOGY; GENERAL QUANTITATIVE THEORY; CONSTANT LEAF
TEMPERATURE; DRY-MATTER CONTENT; FUNCTIONAL TRAITS; FOREST-FIRES;
PRIMARY PRODUCTIVITY; LIMITED HOMEOTHERMY; ISOTOPE RATIOS; HEAT-TRANSFER
AB Building a more predictive trait-based ecology requires mechanistic theory based on first principles. We present a general theoretical approach to link traits and climate. We use plant leaves to show how energy budgets (i) provide a foundation for understanding thermoregulation, (ii) explain mechanisms driving trait variation across environmental gradients, and (iii) guide selection on functional traits via carbon economics. Although plants are often considered to be poikilotherms, the data suggest that they are instead limited homeotherms. Leaf functional traits that promote limited homeothermy are adaptive because homeothermy maximizes instantaneous and lifetime carbon gain. This theory provides a process-based foundation for trait-climate analyses and shows that future studies should consider plant (not only air) temperatures.
C1 [Michaletz, Sean T.; Enquist, Brian J.] Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA.
[Michaletz, Sean T.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
[Weiser, Michael D.; Kaspari, Michael] Univ Oklahoma, Dept Biol, EEB Grad Program, Norman, OK 73069 USA.
[Zhou, Jizhong] Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA.
[Zhou, Jizhong] Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA.
[Zhou, Jizhong] Tsinghua Univ, Sch Environm, State Key Lab Environm Simulat & Pollut Control, Beijing 100084, Peoples R China.
[Zhou, Jizhong] Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94270 USA.
[Kaspari, Michael] Smithsonian Trop Res Inst, Balboa, Panama.
[Helliker, Brent R.] Univ Penn, Dept Biol, Philadelphia, PA 19104 USA.
[Enquist, Brian J.] Santa Fe Inst, Santa Fe, NM 87501 USA.
[Enquist, Brian J.] IPlant Collaborat, Tucson, AZ 85721 USA.
[Enquist, Brian J.] Aspen Ctr Environm Studies, Aspen, CO 81611 USA.
RP Michaletz, ST (reprint author), Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA.
EM michaletz@lanl.gov
OI Michaletz, Sean/0000-0003-2158-6525; Kaspari,
Michael/0000-0002-9717-5768; Enquist, Brian/0000-0002-6124-7096
FU National Science Foundation (NSF) Macro Systems award [1065861]; Aspen
Center for Environmental Studies; Director's Fellowship from the Los
Alamos National Laboratory; NSF [IOS-0950998]; NSF MacroSystems
[1241873]
FX The authors are grateful to Paul Craze and two anonymous reviewers for
their constructive comments on an earlier version of the paper. S.T.M.,
B.J.E., M.K., and M.D.W. were supported by an National Science
Foundation (NSF) Macro Systems award (1065861). S.T.M. and B.J.E. were
supported by a fellowship from the Aspen Center for Environmental
Studies. S.T.M. was supported by a Director's Fellowship from the Los
Alamos National Laboratory. B.R.H. was supported under NSF awards
IOS-0950998 and NSF MacroSystems 1241873.
NR 99
TC 4
Z9 4
U1 8
U2 42
PU ELSEVIER SCIENCE LONDON
PI LONDON
PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND
SN 0169-5347
J9 TRENDS ECOL EVOL
JI Trends Ecol. Evol.
PD DEC
PY 2015
VL 30
IS 12
BP 714
EP 724
DI 10.1016/j.tree.2015.09.006
PG 11
WC Ecology; Evolutionary Biology; Genetics & Heredity
SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics &
Heredity
GA CZ0IC
UT WOS:000366787400002
PM 26476814
ER
PT J
AU Kobayashi, T
Perras, FA
Slowing, II
Sadow, AD
Pruski, M
AF Kobayashi, Takeshi
Perras, Frederic A.
Slowing, Igor I.
Sadow, Aaron D.
Pruski, Marek
TI Dynamic Nuclear Polarization Solid-State NMR in Heterogeneous Catalysis
Research
SO ACS CATALYSIS
LA English
DT Editorial Material
ID METAL-ORGANIC FRAMEWORKS; C-13-C-13 CORRELATION SPECTROSCOPY; NATURAL
ISOTOPIC ABUNDANCE; ENHANCED NMR; SENSITIVITY ENHANCEMENT; NITROXIDE
BIRADICALS; QUADRUPOLAR NUCLEI; HIGH-FREQUENCY; SURFACE; O-17
C1 [Kobayashi, Takeshi; Perras, Frederic A.; Slowing, Igor I.; Sadow, Aaron D.; Pruski, Marek] US DOE, Ames Lab, Ames, IA 50011 USA.
[Slowing, Igor I.; Sadow, Aaron D.; Pruski, Marek] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Pruski, M (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
EM mpruski@iastate.edu
OI Slowing, Igor/0000-0002-9319-8639
NR 70
TC 20
Z9 20
U1 12
U2 58
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD DEC
PY 2015
VL 5
IS 12
BP 7055
EP 7062
DI 10.1021/acscatal.5b02039
PG 8
WC Chemistry, Physical
SC Chemistry
GA CY1FY
UT WOS:000366153300002
ER
PT J
AU You, B
Jiang, N
Sheng, ML
Drisdell, WS
Yano, J
Sun, YJ
AF You, Bo
Jiang, Nan
Sheng, Meili
Drisdell, Walter S.
Yano, Junko
Sun, Yujie
TI Bimetal-Organic Framework Self-Adjusted Synthesis of Support-Free
Nonprecious Electrocatalysts for Efficient Oxygen Reduction
SO ACS CATALYSIS
LA English
DT Article
DE oxygen reduction; electrocatalyst; metal-organic framework;
self-adjusted; nonprecious
ID METAL-FREE ELECTROCATALYSTS; HIGH-SURFACE-AREA; HIGHLY EFFICIENT;
FUEL-CELLS; NANOPOROUS CARBONS; ONE-POT; NITROGEN; CATALYST; GRAPHENE;
PERFORMANCE
AB The development of low-cost catalysts with oxygen reduction reaction (ORR) activity superior to that of Pt for fuel cells is highly desirable but remains challenging. Herein, we report a bimetal-organic framework (bi-MOF) self-adjusted synthesis of support-free porous Co-N-C nanopolyhedron electrocatalysts by pyrolysis of a Zn/Co bi-MOF without any post-treatments. The presence of initial Zn forms a spatial isolation of Co that suppresses its sintering during pyrolysis, and Zn evaporation also promotes the surface area of the resultant catalysts. The composition, morphology, and hence ORR activity of Co-N-C could be tuned by the Zn/Co ratio. The optimal Co-N-C exhibited remarkable ORR activity with a half-wave potential of 0.871 V versus the reversible hydrogen electrode (RHE) (30 mV more positive than that of commercial 20 wt % Pt/C) and a kinetic current density of 39.3 mA cm(-2) at 0.80 V versus RHE (3.1 times that of Pt/C) in 0.1 M KOH, and excellent stability and methanol tolerance. It also demonstrated ORR activity comparable to and stability much higher than those of Pt/C in acidic and neutral electrolytes. Various characterization techniques, including X-ray absorption spectroscopy, revealed that the superior activity and strong stability of Co-N-C originated from the intense interaction between Co and N, the high content of ORR active pyridinic and pyrrolic N, and the large specific surface area.
C1 [You, Bo; Jiang, Nan; Sheng, Meili; Sun, Yujie] Utah State Univ, Dept Chem & Biochem, Logan, UT 84322 USA.
[Drisdell, Walter S.; Yano, Junko] Joint Ctr Artificial Photosynth, Berkeley, CA 94720 USA.
[Yano, Junko] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Sun, YJ (reprint author), Utah State Univ, Dept Chem & Biochem, 0300 Old Main Hill, Logan, UT 84322 USA.
EM yujie.sun@usu.edu
RI You, Bo/M-2631-2014
OI You, Bo/0000-0003-1849-0418
FU Utah State University; Microscopy Core Facility at Utah State
University; Governor's Energy Leadership Scholars Grant of Utah Energy
Research Triangle; Joint Center for Artificial Photosynthesis, a DOE
Energy Innovation Hub; Office of Science of the U.S. Department of
Energy, Berkeley [DE-SC0004993]; Advanced Light Source, Berkeley
[DE-AC02-05CH11231, BL 6.3.1 and 10.3.2]
FX This work was supported financially by Utah State University. Y.S.
acknowledges the support from the Microscopy Core Facility at Utah State
University for some of the SEM work. N.J. acknowledges the Governor's
Energy Leadership Scholars Grant of the Utah Energy Research Triangle.
XAS experiments were supported by the Joint Center for Artificial
Photosynthesis, a DOE Energy Innovation Hub, supported through the
Office of Science of the U.S. Department of Energy under Award Number
DE-SC0004993, and performed at the Advanced Light Source (BL 6.3.1 and
10.3.2), Berkeley, under Contract DE-AC02-05CH11231.
NR 49
TC 33
Z9 33
U1 72
U2 245
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD DEC
PY 2015
VL 5
IS 12
BP 7068
EP 7076
DI 10.1021/acscatal.5b02325
PG 9
WC Chemistry, Physical
SC Chemistry
GA CY1FY
UT WOS:000366153300004
ER
PT J
AU Khan, S
Yang, KR
Ertem, MZ
Batista, VS
Brudvig, GW
AF Khan, Sahr
Yang, Ke R.
Ertem, Mehmed Z.
Batista, Victor S.
Brudvig, Gary W.
TI Mechanism of Manganese-Catalyzed Oxygen Evolution from Experimental and
Theoretical Analyses of O-18 Kinetic Isotope Effects
SO ACS CATALYSIS
LA English
DT Article
DE density functional theory; manganese complex; oxygen evolution
mechanism; oxygen isotope effects; peroxymonosulfate
ID O BOND FORMATION; PHOTOSYNTHETIC WATER OXIDATION; MOLECULAR-ORBITAL
METHODS; PHOTOSYSTEM-II; ARTIFICIAL PHOTOSYNTHESIS; EVOLVING COMPLEX;
DIMANGANESE COMPLEX; MASS-SPECTROMETRY; 1ST-ROW ELEMENTS; SYNTHETIC
MODEL
AB The biomimetic oxomanganese complex [Mn-2(III/IV) mu-O-2)(terpy)(2)(OH2)(2)](NO3)(3) (1; terpy = 2,2':6',2"-terpyridine) catalyzes O-2 evolution from water when activated by oxidants, such as ozone (21Cl-ISO5. KI-ISO4.K2SO4). The mechanism of this reaction has never been characterized, due to the fleeting nature of the intermediates. In the present study, we elucidate the underlying reaction mechanism through experimental and theoretical analyses of competitive kinetic oxygen isotope effects (KIEs) during catalytic turnover conditions. The experimental 180 KIE is a sensitive probe of the highest transition state in the O-2-evolution mechanism and provides a strict constraint for calculated mechanisms. The 180 kinetic isotope effect of 1.013 +/- 0.003 measured using natural abundance reactants is consistent with the calculated isotope effect of peroxymonosulfate binding to the complex, as described by density functional theory (DFT). This provides strong evidence for peroxymonosulfate binding being both the first irreversible and rate-determining step during turnover, in contrast to the previously held assumption that formation of a high-valent Mn-oxo/oxyl species is the highest barrier step that controls the rate of O-2 evolution by this complex. The comparison of the measured and calculated KIEs supplements previous kinetic studies, enabling us to describe the complete mechanism of O-2 evolution, starting from when the oxidant first binds to the manganese complex to when O-2 is released. The reported findings lay the groundwork for understanding O-2 evolution catalyzed by other biomimetic oxomanganese complexes, with features common to those of the O-2-evolving complex of photosystem H, providing experimental and theoretical diagnostics of oxygen isotope effects that could reveal the nature of elusive reaction intermediates.
C1 [Khan, Sahr; Yang, Ke R.; Ertem, Mehmed Z.; Batista, Victor S.; Brudvig, Gary W.] Yale Univ, Dept Chem, New Haven, CT 06520 USA.
[Ertem, Mehmed Z.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Batista, VS (reprint author), Yale Univ, Dept Chem, 225 Prospect St, New Haven, CT 06520 USA.
EM victor.batista@yale.edu; gary.brudvig@yale.edu
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, Division of Chemical Sciences, Geosciences and Biosciences
[DE-FG02-05ER15646, DE-SC0001423]; U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences [DE-SC00112704]
FX The authors thank Dr. Glendon B. Hunsinger and Professor Zhengrong Wang
for their immense help with mass spectrometry, Daryl Smith and Rosario
Bernardo for the vacuum line construction, and Professors Hagit P.
Affeck, Justine P. Roth, and Alfredo M. Angeles-Boza and Drs. Rhitankar
Pal, Ivan Rivalta, and C. Moyses Araujo for helpful discussions. The
experimental work was supported by the U.S. Department of Energy, Office
of Science, Office of Basic Energy Sciences, Division of Chemical
Sciences, Geosciences and Biosciences, grant DE-FG02-05ER15646 (G.W.B.
and S.K.). V.S.B. acknowledges supercomputer time from the NESRC and
financial support from the U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences, Division of Chemical Sciences,
Geosciences, and Biosciences, under Grant DE-SC0001423. The work at BNL
(M.Z.E.) was carried out under contract DE-SC00112704 with the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences.
NR 86
TC 9
Z9 9
U1 18
U2 75
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD DEC
PY 2015
VL 5
IS 12
BP 7104
EP 7113
DI 10.1021/acscatal.5b01976
PG 10
WC Chemistry, Physical
SC Chemistry
GA CY1FY
UT WOS:000366153300009
ER
PT J
AU Vajda, S
White, MG
AF Vajda, Stefan
White, Michael G.
TI Catalysis Applications of Size-Selected Cluster Deposition
SO ACS CATALYSIS
LA English
DT Article
DE size-selected; cluster deposition; heterogeneous catalysis; transition
metal; metal oxide; molybdenum sulfide; work function
ID GAS SHIFT REACTION; SCANNING-TUNNELING-MICROSCOPY; NANOASSEMBLED MODEL
CATALYSTS; SUBNANOMETER COBALT CLUSTERS; DIRECT PROPYLENE EPOXIDATION;
ATOMIC-SCALE INSIGHT; ION-BEAM DEPOSITION; MASS-SELECTED IONS; IN-SITU
GISAXS; ELECTRONIC-STRUCTURE
AB In this Perspective, we review recent studies of size-selected cluster deposition for catalysis applications performed at the U.S. DOE National Laboratories, with emphasis on work at Argonne National Laboratory (ANL) and Brookhaven National Laboratory (BNL). The focus is on the preparation of model supported catalysts in which the number of atoms in the deposited clusters is precisely controlled using a combination of gas-phase cluster ion sources, mass spectrometry, and soft-landing techniques. This approach is particularly effective for investigations of small nanoclusters, 0.5-2 nm (<200 atoms), where the rapid evolution of the atomic and electronic structure makes it essential to have precise control over cluster size. Cluster deposition allows for independent control of cluster size, coverage, and stoichiometry (e.g., the metal-to-oxygen ratio in an oxide cluster) and can be used to deposit on any substrate without constraints of nucleation and growth. Examples are presented for metal, metal oxide, and metal sulfide cluster deposition on a variety of supports (metals, oxides, carbon/diamond) where the reactivity, cluster support electronic interactions, and cluster stability and morphology are investigated. Both UHV and in situ/operando studies are presented that also make use of surface-sensitive X-ray characterization tools from synchrotron radiation facilities. Novel applications of cluster deposition to electrochemistry and batteries are also presented. This review also highlights the application of modern ab initio electronic structure calculations (density functional theory), which can essentially model the exact experimental system used in the laboratory (i.e., cluster and support) to provide insight on atomic and electronic structure, reaction energetics, and mechanisms. As amply demonstrated in this review, the powerful combination of atomically precise cluster deposition and theory is able to address fundamental aspects of size-effects, cluster support interactions, and reaction mechanisms of cluster materials that are central to how catalysts function. The insight gained from such studies can be used to further the development of novel nanostructured catalysts with high activity and selectivity.
C1 [Vajda, Stefan] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Vajda, Stefan] Argonne Natl Lab, Nanosci & Technol Div, Argonne, IL 60439 USA.
[Vajda, Stefan] Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA.
[Vajda, Stefan] Yale Univ, Dept Chem & Environm Engn, New Haven, CT 06520 USA.
[White, Michael G.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[White, Michael G.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
RP White, MG (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM mgwhite@bnl.gov
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-SC0012704]; U.S. Department of Energy, BES-Materials
Science and Engineering [DE-AC-02-06CH11357]; UChicago Argonne, LLC
FX The work performed by M.G.W. at Brookhaven National Laboratory was
supported by the U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences under Contract No. DE-SC0012704. The accompanying
DFT calculations were performed using computational resources at the
Center for Functional Nanomaterials which is a DOE Office of Science
User Facility located at Brookhaven National Laboratory. S.V.
acknowledges the support by the U.S. Department of Energy, BES-Materials
Science and Engineering, under Contract DE-AC-02-06CH11357, with
UChicago Argonne, LLC, the operator of Argonne National Laboratory.
NR 225
TC 18
Z9 18
U1 45
U2 144
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD DEC
PY 2015
VL 5
IS 12
BP 7152
EP 7176
DI 10.1021/acscatal.5b01816
PG 25
WC Chemistry, Physical
SC Chemistry
GA CY1FY
UT WOS:000366153300014
ER
PT J
AU Das, U
Zhang, GH
Hu, B
Hock, AS
Redfern, PC
Miller, JT
Curtiss, LA
AF Das, Ujjal
Zhang, Guanghui
Hu, Bo
Hock, Adam S.
Redfern, Paul C.
Miller, Jeffrey T.
Curtiss, Larry A.
TI Effect of Siloxane Ring Strain and Cation Charge Density on the
Formation of Coordinately Unsaturated Metal Sites on Silica: Insights
from Density Functional Theory (DFT) Studies
SO ACS CATALYSIS
LA English
DT Article
DE single site catalysts; Lewis acids; ring strain; coordination number;
silica surface; DFT; EXAFS; charge density
ID SELECTIVE PROPANE DEHYDROGENATION; AMORPHOUS SILICA; AB-INITIO;
ENERGIES; CATALYST; MODEL; POLYMERIZATION; SURFACE; SIO2
AB Amorphous silica (SiO2) is commonly used as a support in heterogeneous catalysis. However, because of the structural disorder and temperature-induced change of surface morphology, the structures of silica-supported metal catalysts are difficult to determine. Most studies are primarily focused on understanding the interactions of different types of surface hydroxyl groups with metal ions. In comparison, the effect of siloxane ring size on the structure of silica-supported metal catalysts and how it affects catalytic activity is poorly understood. Here, we have used density functional theory (DFT) calculations to understand the effect of siloxane ring strain on structure and activity of different monomeric Lewis acid metal sites on silica. In particular, we have found that large siloxane rings favor strong dative bonding interaction between metal ion and surface hydroxyls, leading to the formation of high-coordinate metal sites. In comparison, metal silanol interaction is weak in small siloxane rings, resulting in low-coordinate metal sites. The physical origin of this size dependence is associated with siloxane ring strain, and a correlation between the metal silanol interaction energy and the ring strain energy has been observed. In addition to ring strain, the strength of the metal silanol interaction also depends on the positive charge density of the cations. In fact, a correlation also exists between metal silanol interaction energy and charge density of several first-row transition and post-transition metals. The theoretical results are compared with the extended X-ray absorption fine structure (EXAFS) data of monomeric Zn(II) and Ga(III) ions grafted on silica. The molecular level insights of how metal ion coordination on silica depends on siloxane ring strain and cation charge density will be useful in the synthesis of new catalysts.
C1 [Das, Ujjal; Curtiss, Larry A.] Argonne Natl Lab, Div Mat Sci, Lemont, IL 60439 USA.
[Zhang, Guanghui; Hu, Bo; Hock, Adam S.; Redfern, Paul C.; Miller, Jeffrey T.] Argonne Natl Lab, Chem Sci & Engn, Lemont, IL 60439 USA.
[Zhang, Guanghui; Hu, Bo; Hock, Adam S.] IIT, Dept Chem, Chicago, IL 60616 USA.
RP Das, U (reprint author), Argonne Natl Lab, Div Mat Sci, Lemont, IL 60439 USA.
EM udas@anl.gov; curtiss@anl.gov
RI Zhang, Guanghui/C-4747-2008; Hock, Adam/D-7660-2012
OI Zhang, Guanghui/0000-0002-5854-6909; Hock, Adam/0000-0003-1440-1473
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences and Biosciences; U.S. Department of
Energy [DE-AC02-06CH11357]
FX The work was supported by the U.S. Department of Energy, Office of Basic
Energy Sciences, Division of Chemical Sciences, Geosciences and
Biosciences. Argonne is operated by UChicago Argonne, LLC, for the U.S.
Department of Energy, under Contract No. DE-AC02-06CH11357. Theoretical
calculations were performed using the computational resources available
at the Argonne National Laboratory Center for Nanoscale Materials (CNM)
and the computing resources provided on Fusion and Blues, two
high-performance computing clusters operated by the Laboratory Computing
Resource Center (LCRC) at Argonne National Laboratory.
NR 29
TC 4
Z9 4
U1 5
U2 34
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD DEC
PY 2015
VL 5
IS 12
BP 7177
EP 7185
DI 10.1021/acscatal.5b01699
PG 9
WC Chemistry, Physical
SC Chemistry
GA CY1FY
UT WOS:000366153300015
ER
PT J
AU Shao, YY
Cheng, YW
Duan, WT
Wang, W
Lin, YH
Wang, Y
Liu, J
AF Shao, Yuyan
Cheng, Yingwen
Duan, Wentao
Wang, Wei
Lin, Yuehe
Wang, Yong
Liu, Jun
TI Nanostructured Electrocatalysts for PEM Fuel Cells and Redox Flow
Batteries: A Selected Review
SO ACS CATALYSIS
LA English
DT Review
DE fuel cells; flow battery; electrocatalyst; graphene; defects; energy
storage
ID OXYGEN REDUCTION REACTION; NITROGEN-DOPED GRAPHENE; METAL-FREE
ELECTROCATALYSTS; RESEARCH-AND-DEVELOPMENT; SCALE ENERGY-STORAGE; CARBON
NANOTUBES; AIR BATTERIES; RECENT PROGRESS; FUNCTIONALIZED GRAPHENE;
PLATINUM NANOPARTICLES
AB PEM fuel cells and redox flow batteries are two very similar technologies which share common component materials and device design. Electrocatalysts are the key components in these two devices. In this Review, we discuss recent progress of electrocatalytic materials for these two technologies with a focus on our research activities at Pacific Northwest National Laboratory (PNNL) in the past years. This includes (1) nondestructive functionalization of graphitic carbon as Pt support to improve its electrocatalytic performance, (2) triple-junction of metal-carbon-metal oxides to promote Pt performance, (3) nitrogen-doped carbon and metal-doped carbon (i.e., metal oxides) to improve redox reactions in flow batteries. A perspective on future research and the synergy between the two technologies are also discussed.
C1 [Shao, Yuyan; Cheng, Yingwen; Duan, Wentao; Wang, Wei; Wang, Yong; Liu, Jun] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Wang, Yong] Washington State Univ, Voiland Sch Chem Engn & Bioengn, Pullman, WA 99163 USA.
[Lin, Yuehe] Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.
RP Shao, YY (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM yuyan.shao@pnnl.gov; yong.wang@pnnl.gov; jun.liu@pnnl.gov
RI Shao, Yuyan/A-9911-2008; Wang, Wei/F-4196-2010; Lin, Yuehe/D-9762-2011;
Duan, Wentao/E-5742-2011; Cheng, Yingwen/B-2202-2012
OI Shao, Yuyan/0000-0001-5735-2670; Wang, Wei/0000-0002-5453-4695; Lin,
Yuehe/0000-0003-3791-7587; Duan, Wentao/0000-0002-8269-6413; Cheng,
Yingwen/0000-0002-0778-5504
FU U.S. Department of Energy's (DOE's) Office of Energy Efficiency and
Renewable Energy Fuel Cell Technologies Office; DOE Office of
Electricity Energy Storage Program; DOE [DE-AC05-76L01830]
FX This PEM fuel cell research is supported by the U.S. Department of
Energy's (DOE's) Office of Energy Efficiency and Renewable Energy Fuel
Cell Technologies Office and the redox flow battery research is
supported by DOE Office of Electricity Energy Storage Program. PNNL is
operated by Battelle for DOE under Contract DE-AC05-76L01830.
NR 126
TC 17
Z9 17
U1 33
U2 130
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD DEC
PY 2015
VL 5
IS 12
BP 7288
EP 7298
DI 10.1021/acscatal.5b01737
PG 11
WC Chemistry, Physical
SC Chemistry
GA CY1FY
UT WOS:000366153300028
ER
PT J
AU Wei, ZH
Karim, A
Li, Y
Wang, Y
AF Wei, Zhehao
Karim, Ayman
Li, Yan
Wang, Yong
TI Elucidation of the Roles of Re in Aqueous-Phase Reforming of Glycerol
over Pt-Re/C Catalysts
SO ACS CATALYSIS
LA English
DT Article
DE aqueous-phase reforming; bimetallic catalyst; platinum-rhenium; rhenium
oxide; catalysis in condensed water; surface acidity; selectivity; in
situ and in operando spectroscopy
ID WATER-GAS-SHIFT; BIMETALLIC CATALYSTS; RHENIUM CATALYSTS; CO ADSORPTION;
ACID SITES; HYDROGEN; SPECTROSCOPY; DEHYDRATION; PROMOTION; OXIDATION
AB We report the investigation of surface properties of Pt/C and Pt Re/C catalysts using in situ spectroscopic tools and a fundamental understanding of their catalytic performances in glycerol aqueous-phase reforming (APR). We found that adding Re to Pt/C improves its activity significantly, which is consistent with our previous observation in glycerol steam reforming. However, the difference in reaction selectivity is much more pronounced in APR. Compared to Pt/C, Pt Re/C yielded significantly more liquid products, while the selectivity to H2 and CO2 decreased by more than 40%. In operand X-ray absorption spectroscopy and attenuated total reflectance infrared (ATR-IR) with in situ capability as well as Raman spectroscopy were employed to investigate the catalyst surface properties and the roles of Re. In operando X-ray absorption fine structure shows treatment. Additionally, ATR-IR using CO as a probe molecule demonstrated that desorption of CO from the Pt Re/C surface is more facile than that from Pt/C in the aqueous phase. We propose that well-dispersed Re oxide species in the proximity of Pt work as the active sites, providing both metal and acid functionalities, while the terminal Re-O moiety has little contribution to the overall reactivity as evidenced by Raman spectroscopy.
C1 [Wei, Zhehao; Li, Yan; Wang, Yong] Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA.
[Wei, Zhehao; Karim, Ayman; Wang, Yong] Pacific NW Natl Lab, Inst Integrated Catalysis, Richland, WA 99352 USA.
RP Karim, A (reprint author), Pacific NW Natl Lab, Inst Integrated Catalysis, Richland, WA 99352 USA.
EM amkarim@vt.edu; yong.wang@pnnl.gov
RI Wei, Zhehao/L-2801-2013; Karim, Ayman/G-6176-2012
OI Wei, Zhehao/0000-0002-9670-4752; Karim, Ayman/0000-0001-7449-542X
FU U.S. Department of Energy (DOE), Office of Basic Energy Sciences,
Division of Chemical Sciences, Geosciences, and Biosciences; U.S.
Department of Energy, Office of Basic Energy Sciences
[DE-FG02-05ER15688]; Synchrotron Catalysis Consortium
FX The authors acknowledge financial support from U.S. Department of Energy
(DOE), Office of Basic Energy Sciences, Division of Chemical Sciences,
Geosciences, and Biosciences. Use of the National Synchrotron Light
Source, Brookhaven National Laboratory, for the EXAFS experiments was
supported by the U.S. Department of Energy, Office of Basic Energy
Sciences (Grant DE-FG02-05ER15688). Beamline X18A is supported, in part,
by the Synchrotron Catalysis Consortium. A.K. thanks Yongchun Hong
(Washington State University) for his help with XAS data collection.
NR 37
TC 1
Z9 1
U1 12
U2 53
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD DEC
PY 2015
VL 5
IS 12
BP 7312
EP 7320
DI 10.1021/acscatal.5b01770
PG 9
WC Chemistry, Physical
SC Chemistry
GA CY1FY
UT WOS:000366153300030
ER
PT J
AU Yang, Y
Mei, DH
Peden, CHF
Campbell, CT
Mims, CA
AF Yang, Yong
Mei, Donghai
Peden, Charles H. F.
Campbell, Charles T.
Mims, Charles A.
TI Surface-Bound Intermediates in Low-Temperature Methanol Synthesis on
Copper: Participants and Spectators
SO ACS CATALYSIS
LA English
DT Article
DE methanol synthesis; copper; formate; mechanism; spectator
ID GAS SHIFT REACTION; PROGRAMMED REACTION SPECTROSCOPY; ZIRCONIA PROMOTED
CU/SIO2; CU(110) MODEL CATALYSTS; SILICA-SUPPORTED COPPER; ZN-DEPOSITED
CU(111); CO2 HYDROGENATION; FORMIC-ACID; CU/ZNO CATALYSTS; HETEROGENEOUS
CATALYSIS
AB The reactivity of surface-adsorbed species present on copper catalysts during methanol synthesis at low temperatures was studied by simultaneous infrared spectroscopy (IR) and mass spectroscopy (MS) measurements during "titration" (transient surface reaction) experiments with isotopic tracing. The results show that adsorbed formate is a major bystander species present on the surface under steady-state methanol synthesis reaction conditions, but it cannot be converted to methanol by reaction with pure H-2 or with H2 plus added water. Formate-containing surface adlayers for these experiments were produced during steady-state catalysis in (a) H-2:CO2 (with substantial formate coverage) and (b) moist H2:CO (with no IR visible formate species). These reaction conditions both produce methanol at steady state with relatively high rates. Adlayers containing formate were also produced by (c) formic acid adsorption. Various "titration" gases were used to probe these adlayers at modest temperatures (T = 410-450 K) and 6 bar total pressure. Methanol gas (up to 1% monolayer equivalent) was produced in "titration" from the H-2:CO2 catalytic adlayers by H-2 plus water, but not by dry hydrogen. The decay in the formate IR features accelerated in the presence of added water vapor. The H-2:CO:H2O catalytic adlayer produced similar methanol titration yields in H-2 plus water but showed no surface formate features in IR (less than 0.2% monolayer coverage). Finally, formate from formic acid chemisorption produced no methanol under any titration conditions. Even under H-2:CO2 catalytic reaction conditions, isotope tracing showed that preadsorbed formate from formic acid did not contribute to the methanol produced. Although non-formate species exist during low-temperature methanol synthesis on copper which can be converted to methanol gas by titration with pure H-2 plus water in sufficient quantities for that intermediate to be observable by IR., formate itself is only a "spectator" in this reaction and gives no observable methanol upon any titration we performed with H-2 or H-2 plus water.
C1 [Yang, Yong; Mei, Donghai; Peden, Charles H. F.] Pacific NW Natl Lab, Inst Integrated Catalysis, Richland, WA 99354 USA.
[Yang, Yong; Campbell, Charles T.] Univ Washington, Dept Chem, Seattle, WA 98195 USA.
[Mims, Charles A.] Univ Toronto, Dept Chem Engn, Toronto, ON M5S 3E5, Canada.
[Mims, Charles A.] Univ Toronto, Dept Chem, Toronto, ON M5S 3E5, Canada.
RP Mims, CA (reprint author), Univ Toronto, Dept Chem Engn, 200 Coll St, Toronto, ON M5S 3E5, Canada.
EM yangyong@shanghaitech.edu.cn; charles.mims@utoronto.ca
RI Mei, Donghai/D-3251-2011; Mei, Donghai/A-2115-2012
OI Mei, Donghai/0000-0002-0286-4182
FU U.S. Department of Energy (DOE), Office of Basic Energy Sciences,
Division of Chemical Sciences, Geosciences, and Biosciences; Department
of Energy, Office of Basic Energy Sciences, Chemical Sciences Division
[DE-FG02-96ER14630]; National Science and Engineering Research Council
(Canada); DOE's Office of Biological and Environmental Research
FX D.M. and C.H.F.P. thank the U.S. Department of Energy (DOE), Office of
Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and
Biosciences, for funding their participation in this work. C.T.C.
acknowledges the Department of Energy, Office of Basic Energy Sciences,
Chemical Sciences Division, under Grant No. DE-FG02-96ER14630 for
support of this work. CAM, thanks the Institute for Integrated Catalysis
for support as a visiting professor and the National Science and
Engineering Research Council (Canada) for partial support. This work was
conducted in the William R. Wiley Environmental Molecular Sciences
Laboratory (EMSL), a national scientific user facility sponsored by
DOE's Office of Biological and Environmental Research and located at
Pacific Northwest National Laboratory (PNNL). PNNL is a multiprogram
national laboratory operated for DOE by Battelle. The authors dedicate
this paper to the memory of J. Michael White, founding director of the
Institute for Integrated Catalysis at PNNL, mentor, and friend.
NR 88
TC 6
Z9 7
U1 17
U2 95
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD DEC
PY 2015
VL 5
IS 12
BP 7328
EP 7337
DI 10.1021/acscatal.5b02060
PG 10
WC Chemistry, Physical
SC Chemistry
GA CY1FY
UT WOS:000366153300032
ER
PT J
AU Eedugurala, N
Wang, ZR
Chaudhary, U
Nelson, N
Kandel, K
Kobayashi, T
Slowing, II
Pruski, M
Sadow, AD
AF Eedugurala, Naresh
Wang, Zhuoran
Chaudhary, Umesh
Nelson, Nicholas
Kandel, Kapil
Kobayashi, Takeshi
Slowing, Igor I.
Pruski, Marek
Sadow, Aaron D.
TI Mesoporous Silica-Supported Amidozirconium-Catalyzed Carbonyl
Hydroboration
SO ACS CATALYSIS
LA English
DT Article
DE single-site catalysts; carbonyl hydroboration; zirconium hydride;
interfacial catalysis; mesoporous silica; solid-state NMR
ID SURFACE ORGANOMETALLIC CHEMISTRY; CHIRAL TITANOCENE CATALYST; SIGMA-BOND
METATHESIS; SOLID-STATE NMR; DYNAMIC NUCLEAR-POLARIZATION; SELECTIVE
HYDROSILYLATION; ASYMMETRIC HYDROGENATION; ORGANOYTTRIUM COMPLEX;
ZIRCONIUM HYDRIDES; ACTIVATION
AB The hydroboration of aldehydes and ketones using a silica-supported zirconium catalyst is reported. Reaction of Zr(NMe2)(4) and mesoporous silica nanoparticles (MSN) provides the catalytic material Zr(NMe2)(5)@MSN. Exhaustive characterization of Zr(NMe2)(5)@MSN with solidstate (SS)NMR and infrared spectroscopy, as well as through reactivity studies, suggests its surface structure is primarily an SiOZr(NMe2)(3). The presence of these nitrogen-containing zirconium sites is supported by I5N NMR spectroscopy, including natural abundance '5N NMR measurements using dynamic nuclear polarization (DNP) SSNMR. The Zr(NMe2)(5)@MSN material reacts with pinacolborane (HBpin) to provide Me(2)NBpin and the material ZrH/Bpin@MSN that is composed of interacting surface-bonded zirconium hydride and surface-bonded borane =-SiOBpin moieties in an approximately 1:1 ratio, as well as zirconium sites coordinated by dimethylamine. The ZrH/Bpin@MSN is characterized by 'H/H-2 and HB SSNMR and infrared spectroscopy and through its reactivity with D-2. The zirconium hydride material or the zirconium amide precursor Zr(NMe2)(5)@MSN catalyzes the selective hydroboration of aldehydes and ketones with HBpin in the presence of functional groups that are often reduced under hydroboration conditions or are sensitive to metal hydrides, including olefins, alkynes, nitro groups, halides, and ethers. Remarkably, this catalytic material may be recycled without loss of activity at least eight times, and air-exposed materials are catalytically active. Thus, these supported zirconium centers are robust catalytic sites for carbonyl reduction and that surface-supported, catalytically reactive zirconium hydride may be generated from zirconium-amide or zirconium alkoxide sites.
C1 [Sadow, Aaron D.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Sadow, AD (reprint author), Iowa State Univ, US DOE, Ames Lab, 1605 Gilman Hall, Ames, IA 50011 USA.
EM mpruski@iastate.edu; sadow@iastate.edu
OI Slowing, Igor/0000-0002-9319-8639
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences, and Biosciences [DE-AC02-07CH11358]
FX This research was supported by the U.S. Department of Energy, Office of
Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and
Biosciences through the Ames Laboratory (Contract No.
DE-AC02-07CH11358). The authors thank BASF for the generous donation of
the P104 surfactant.
NR 63
TC 6
Z9 6
U1 15
U2 64
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD DEC
PY 2015
VL 5
IS 12
BP 7399
EP 7414
DI 10.1021/acscatal.5b01671
PG 16
WC Chemistry, Physical
SC Chemistry
GA CY1FY
UT WOS:000366153300040
ER
PT J
AU Akato, K
Tran, CD
Chen, JH
Naskar, AK
AF Akato, Kokouvi
Tran, Chau D.
Chen, Jihua
Naskar, Amit K.
TI Poly(ethylene oxide)-Assisted Macromolecular Self-Assembly of Lignin in
ABS Matrix for Sustainable Composite Applications
SO ACS SUSTAINABLE CHEMISTRY & ENGINEERING
LA English
DT Article
DE Lignin; Self-assembly; Renewable composites; Sustainable materials;
Polymer
ID MECHANICAL-PROPERTIES; MULTIPHASE MATERIALS; NATURAL FIBER; BLENDS;
THERMOPLASTICS; VALORIZATION; ESTERS
AB In this effort, we report the compatibilization of biomass-derived lignin polymer in acrylonitrile butadiene styrene (ABS) thermoplastic matrix without loss of mechanical properties via poly(ethylene oxide) (PEO)-mediated macromolecular self-assembly. ABS was blended with lignin in different concentrations, and blends with 10 wt % PEO (relative to lignin) were prepared. The relative tensile strength improved slightly at low lignin content but diminished rapidly as the lignin content was increased. However, the inclusion of PEO as an interfacial adhesion promoter helped avoid deleterious effects. Dynamic mechanical analysis showed that PEO plasticized the hard phase and thus lowered the activation energy (Ea) for its relaxation but caused stiffening of the soft phase and increased its Ea. Microscopy revealed that incorporating lignin in ABS led to the statistical dispersion of discrete lignin domains (300-1000 nm) which, after PEO addition, were reduced to smaller interconnected particles (200-500 nm). The lignin-extended partially renewable ABS resins showed shear-thinning behavior and reduced viscosity compared to neat ABS. The preferred lignin-loaded compositions reinforced with 20 vol % chopped carbon fibers exhibited mechanical performances (77-80 MPa) equivalent to those of reinforced ABS materials reportedly used in 3D printing applications. This approach could lower the cost of ABS while reducing its carbon footprint.
C1 [Akato, Kokouvi; Tran, Chau D.; Naskar, Amit K.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Carbon & Composites Grp, Oak Ridge, TN 37831 USA.
[Akato, Kokouvi; Naskar, Amit K.] Univ Tennessee, Bredesen Ctr Interdisciplinary Res & Grad Educ, Knoxville, TN 37996 USA.
[Chen, Jihua] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Naskar, AK (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Carbon & Composites Grp, Oak Ridge, TN 37831 USA.
EM naskarak@ornl.gov
RI Chen, Jihua/F-1417-2011
OI Chen, Jihua/0000-0001-6879-5936
FU Technology Innovation Program of Oak Ridge National Laboratory; U.S.
Department of Energy [DE-AC05-00OR22725]
FX Research was sponsored by the Technology Innovation Program of Oak Ridge
National Laboratory, managed by UT-Battelle, LLC, for the U.S.
Department of Energy. TEM (J.C. and C. D. T.) experiments were conducted
at the Center for Nanophase Materials Sciences, which is a DOE Office of
Science User Facility. This paper has been authored by UT-Battelle, LLC,
under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy.
The United States Government retains and the publisher, by accepting the
article for publication, acknowledges that the United States Government
retains a nonexclusive, paid-up, irrevocable, worldwide license to
publish or reproduce the published form of this paper, or allow others
to do so, for United States Government purposes.
NR 25
TC 4
Z9 4
U1 19
U2 41
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2168-0485
J9 ACS SUSTAIN CHEM ENG
JI ACS Sustain. Chem. Eng.
PD DEC
PY 2015
VL 3
IS 12
BP 3070
EP 3076
DI 10.1021/acssuschemeng.5b00509
PG 7
WC Chemistry, Multidisciplinary; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY;
Engineering, Chemical
SC Chemistry; Science & Technology - Other Topics; Engineering
GA CY1GC
UT WOS:000366153700008
ER
PT J
AU Chapman, KW
Parsons, S
Walton, RI
AF Chapman, Karena W.
Parsons, Simon
Walton, Richard I.
TI Introduction to the special issue on energy materials
SO ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING
AND MATERIALS
LA English
DT Editorial Material
DE energy materials; structure-property relationship; framework materials;
molecular storage; conductors; batteries; thermoelectrics
C1 [Chapman, Karena W.; Parsons, Simon] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA.
[Walton, Richard I.] Univ Edinburgh, Sch Chem, Edinburgh EH9 3JJ, Midlothian, Scotland.
Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England.
RP Chapman, KW (reprint author), Argonne Natl Lab, Adv Photon Source, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM chapmank@aps.anl.gov; s.parsons@ed.ac.uk; r.i.walton@warwick.ac.uk
OI Walton, Richard/0000-0001-9706-2774
NR 15
TC 0
Z9 0
U1 3
U2 13
PU INT UNION CRYSTALLOGRAPHY
PI CHESTER
PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND
SN 2052-5206
J9 ACTA CRYSTALLOGR B
JI Acta Crystallogr. Sect. B-Struct. Sci.Cryst. Eng. Mat.
PD DEC
PY 2015
VL 71
SI SI
BP 583
EP 584
DI 10.1107/S2052520615022477
PN 6
PG 2
WC Chemistry, Multidisciplinary; Crystallography
SC Chemistry; Crystallography
GA CY3PF
UT WOS:000366321100001
PM 26634714
ER
PT J
AU Kwon, G
Kokhan, O
Han, A
Chapman, KW
Chupas, PJ
Du, PW
Tiede, DM
AF Kwon, Gihan
Kokhan, Oleksandr
Han, Ali
Chapman, Karena W.
Chupas, Peter J.
Du, Pingwu
Tiede, David M.
TI Oxyanion induced variations in domain structure for amorphous cobalt
oxide oxygen evolving catalysts, resolved by X-ray pair distribution
function analysis
SO ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING
AND MATERIALS
LA English
DT Article
DE water-splitting catalysts; amorphous metal oxides; pair distribution
function analysis; high-energy X-ray scattering; cobalt oxide
ID WATER OXIDATION CATALYSIS; PHOTOSYSTEM-II; EVOLUTION ELECTROCATALYSTS;
MOLECULAR-DYNAMICS; OXIDIZING COMPLEX; MANGANESE OXIDES; MECHANISM;
PHOSPHATE; DIFFRACTION; NICKEL
AB Amorphous thin film oxygen evolving catalysts, OECs, of first-row transition metals show promise to serve as self-assembling photoanode materials in solar-driven, photoelectrochemical 'artificial leaf' devices. This report demonstrates the ability to use high-energy X-ray scattering and atomic pair distribution function analysis, PDF, to resolve structure in amorphous metal oxide catalyst films. The analysis is applied here to resolve domain structure differences induced by oxyanion substitution during the electrochemical assembly of amorphous cobalt oxide catalyst films, Co-OEC. PDF patterns for Co-OEC films formed using phosphate, Pi, methylphosphate, MPi, and borate, Bi, electrolyte buffers show that the resulting domains vary in size following the sequence Pi < MPi < Bi. The increases in domain size for CoMPi and CoBi were found to be correlated with increases in the contributions from bilayer and trilayer stacked domains having structures intermediate between those of the LiCoOO and CoO(OH) mineral forms. The lattice structures and offset stacking of adjacent layers in the partially stacked CoMPi and CoBi domains were best matched to those in the LiCoOO layered structure. The results demonstrate the ability of PDF analysis to elucidate features of domain size, structure, defect content and mesoscale organization for amorphous metal oxide catalysts that are not readily accessed by other X-ray techniques. PDF structure analysis is shown to provide a way to characterize domain structures in different forms of amorphous oxide catalysts, and hence provide an opportunity to investigate correlations between domain structure and catalytic activity.
C1 [Kwon, Gihan; Kokhan, Oleksandr; Tiede, David M.] Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA.
[Han, Ali; Du, Pingwu] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China.
[Chapman, Karena W.; Chupas, Peter J.] Argonne Natl Lab, Xray Sci Div, Lemont, IL 60439 USA.
RP Tiede, DM (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Lemont, IL 60439 USA.
EM tiede@anl.gov
OI Kokhan, Oleksandr/0000-0001-9867-8044
FU Division of Chemical Sciences, Geosciences and Biosciences, Office of
Basic Energy Sciences of the US Department of Energy
[DE-AC02-06CH11357]; US DOE [DE-AC02-06CH11357]
FX This work was supported by the Division of Chemical Sciences,
Geosciences and Biosciences, Office of Basic Energy Sciences of the US
Department of Energy under Contract DE-AC02-06CH11357. High-energy X-ray
scattering measurements were carried out at beamline 11-ID-B of the
Advanced Photon Source, an Office of Science User Facility operated for
the US Department of Energy (DOE) Office of Science by Argonne National
Laboratory and supported by the US DOE under Contract No.
DE-AC02-06CH11357.
NR 50
TC 1
Z9 1
U1 10
U2 22
PU INT UNION CRYSTALLOGRAPHY
PI CHESTER
PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND
SN 2052-5206
J9 ACTA CRYSTALLOGR B
JI Acta Crystallogr. Sect. B-Struct. Sci.Cryst. Eng. Mat.
PD DEC
PY 2015
VL 71
SI SI
BP 713
EP 721
DI 10.1107/S2052520615022180
PN 6
PG 9
WC Chemistry, Multidisciplinary; Crystallography
SC Chemistry; Crystallography
GA CY3PF
UT WOS:000366321100015
PM 26634728
ER
PT J
AU Ashton, TE
Borras, DH
Iadecola, A
Wiaderek, KM
Chupas, PJ
Chapman, KW
Corr, SA
AF Ashton, Thomas E.
Borras, David Hevia
Iadecola, Antonella
Wiaderek, Kamila M.
Chupas, Peter J.
Chapman, Karena W.
Corr, Serena A.
TI Microwave-assisted synthesis and electrochemical evaluation of VO2 (B)
nanostructures
SO ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING
AND MATERIALS
LA English
DT Article
DE vanadium dioxide; Li-ion battery; X-ray absorption spectroscopy;
in-situ; intercalation
ID LITHIUM-ION BATTERIES; TEMPLATE-FREE SYNTHESIS; HOLLOW MICROSPHERES;
CATHODE MATERIAL; VANADIUM-OXIDES; HYDROTHERMAL SYNTHESIS;
INTERCALATION; NANOWIRES; PERFORMANCES; NANOSHEETS
AB Understanding how intercalation materials change during electrochemical operation is paramount to optimizing their behaviour and function and in situ characterization methods allow us to observe these changes without sample destruction. Here we first report the improved intercalation properties of bronze phase vanadium dioxide VO2 (B) prepared by a microwave-assisted route which exhibits a larger electrochemical capacity (232 mAh g(-1)) compared with VO2 (B) prepared by a solvothermal route (197 mAh g(-1)). These electrochemical differences have also been followed using in situ X-ray absorption spectroscopy allowing us to follow oxidation state changes as they occur during battery operation.
C1 [Ashton, Thomas E.; Borras, David Hevia; Corr, Serena A.] Univ Glasgow, Sch Chem, Glasgow G12 8QQ, Lanark, Scotland.
[Iadecola, Antonella] European Synchrotron, F-38000 Grenoble, France.
[Iadecola, Antonella] FR CNRS 3459, Reseau Stockage Electrochim Energie, Paris, France.
[Iadecola, Antonella] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France.
[Wiaderek, Kamila M.; Chupas, Peter J.; Chapman, Karena W.] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
RP Corr, SA (reprint author), Univ Glasgow, Sch Chem, Glasgow G12 8QQ, Lanark, Scotland.
EM serena.corr@glasgow.ac.uk
OI Corr, Serena/0000-0002-9303-4220
FU EPSRC [EP/K029290/1, EP/N001982/1]; Royal Society [RG100301]; University
of Glasgow; US Department of Energy [DE-AC02-06CH11357]
FX We gratefully acknowledge helpful discussions with Dr Mark Newton and
technical support from Mr Michael Beglan. We also thank the European
Radiation Synchrotron Facility (ESRF) for beam time allocation, the
EPSRC (EP/K029290/1 and EP/N001982/1) and Royal Society (RG100301) for
funding, the University of Glasgow for support and the School of
Chemistry for the use of its facilities. Work done at Argonne and use of
the Advanced Photon Source, an Office of Science User Facility operated
for the US Department of Energy Office of Science by Argonne National
Laboratory, were supported by the US Department of Energy under Contract
No. DE-AC02-06CH11357.
NR 34
TC 2
Z9 2
U1 6
U2 41
PU INT UNION CRYSTALLOGRAPHY
PI CHESTER
PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND
SN 2052-5206
J9 ACTA CRYSTALLOGR B
JI Acta Crystallogr. Sect. B-Struct. Sci.Cryst. Eng. Mat.
PD DEC
PY 2015
VL 71
SI SI
BP 722
EP 726
DI 10.1107/S2052520615021289
PN 6
PG 5
WC Chemistry, Multidisciplinary; Crystallography
SC Chemistry; Crystallography
GA CY3PF
UT WOS:000366321100016
PM 26634729
ER
PT J
AU Egbendewe-Mondzozo, A
Swinton, SM
Kang, SJ
Post, WM
Binfield, JC
Thompson, W
AF Egbendewe-Mondzozo, Aklesso
Swinton, Scott M.
Kang, Shujiang
Post, Wilfred M.
Binfield, Julian C.
Thompson, Wyatt
TI Bioenergy Supply and Environmental Impacts on Cropland: Insights from
Multi-market Forecasts in a Great Lakes Subregional Bioeconomic Model
SO APPLIED ECONOMIC PERSPECTIVES AND POLICY
LA English
DT Article
DE Land use; environmental impact; biofuels
ID BIOFUEL MANDATES; SIMULATIONS; FEEDSTOCK; CROPS
AB Using subregional models of crop production choices in central Wisconsin and southwest Michigan, we predict biomass production, land use, and environmental impacts with details that are unavailable from national scale models. When biomass prices are raised exogenously, we find that the subregional models overestimate the supply, the land use, and the beneficial environmental aspects of perennial biomass crops. Multi-market price feedbacks tied to realistic policy parameters predict high threshold absolute prices for biomass to enter production, resulting in intensified production of biomass from annual grain crops with damaging environmental impacts. Multi-market feedbacks also predict regional specialization in energy biomass production in areas with lower yields of food crops. Policies promoting biofuels will not necessarily generate environmental benefits in the absence of environmental regulations.
C1 [Egbendewe-Mondzozo, Aklesso] Univ Lome, Dept Econ & Management Sci FASEG, Lome, Togo.
[Swinton, Scott M.] Michigan State Univ, Dept Agr Food & Resource Econ, E Lansing, MI 48824 USA.
[Swinton, Scott M.] Michigan State Univ, Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA.
[Kang, Shujiang; Post, Wilfred M.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Kang, Shujiang; Post, Wilfred M.] Great Lakes Bioenergy Res Ctr, Madison, WI USA.
[Binfield, Julian C.; Thompson, Wyatt] Univ Missouri, Food & Agr Policy Res Inst, Columbia, MO 65211 USA.
RP Egbendewe-Mondzozo, A (reprint author), Univ Lome, Dept Econ & Management Sci FASEG, Lome, Togo.
EM emaklesso@gmail.com
FU U.S. Department of Energy's Office of Science [DE-FCO2-07ER64494];
Office of Energy Efficiency and Renewable Energy [DE-ACO5-76RL01830];
U.S. National Science Foundation's Long-term Ecological Research program
[DEB 1027253]; Michigan State University AgBioResearch
FX Funding for this research was provided by the U.S. Department of
Energy's Office of Science (DE-FCO2-07ER64494) and Office of Energy
Efficiency and Renewable Energy (DE-ACO5-76RL01830), the U.S. National
Science Foundation's Long-term Ecological Research (DEB 1027253)
program, and Michigan State University AgBioResearch. Part of this
research was carried out when the first author was a senior researcher
at the Fondazione Eni Enrico Mattei (FEEM) in Milan, Italy. Therefore,
material support from FEEM is acknowledged. For data and comments, the
authors wish to thank Sarah AcMoody, Kurt Thelen, Bruce Dale, Seth
Meyer, Bryan Bals, Josh Posner, R. Cesar Izaurralde, David H. Manowitz,
Xuesong Zhang, and all the participants at the 2012 International
Agricultural Economists Association (IAAE) meeting in Foz do Iguacu,
Brazil.
NR 34
TC 0
Z9 0
U1 8
U2 8
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 2040-5790
EI 2040-5804
J9 APPL ECON PERSPECT P
JI Appl. Econ. Perspect. Policy
PD DEC
PY 2015
VL 37
IS 4
BP 602
EP 618
DI 10.1093/aepp/ppu044
PG 17
WC Agricultural Economics & Policy; Economics
SC Agriculture; Business & Economics
GA CY4IF
UT WOS:000366371100004
ER
PT J
AU Oleske, JB
Smith, BT
Barber, J
Weatherall, JC
AF Oleske, Jeffrey B.
Smith, Barry T.
Barber, Jeffrey
Weatherall, James C.
TI Identifying Raman and Infrared Vibrational Motions of Erythritol
Tetranitrate
SO APPLIED SPECTROSCOPY
LA English
DT Article
DE Vibrational signature; Raman spectroscopy; Attenuated total reflectance;
ATR; Explosives detection; Erythritol tetranitrate; ETN
ID MOLECULAR-STRUCTURE; RESONANCE RAMAN; NITRIC ESTERS; EXPLOSIVES;
SPECTROSCOPY; SPECTRA; RDX
AB The vibrational bands of erythritol tetranitrate (ETN) were measured experimentally with both Raman spectroscopy and attenuated total reflectance Fourier transform infrared (AIR FT-IR) spectroscopy. Seventy-two (3N-6) vibrational modes were predicted for FIN using density functional theory calculations performed using the B3LYP/6-31G* density functional basis set and geometry optimization. Raman spectroscopy and ATR FT-IR were used to measure observable Raman and IR signatures between 140 and 3100 wavenumbers (cm(-1)). Within this spectral range, 32 Raman bands and 21 IR bands were measured and identified by their predicted vibrational motion. The spectroscopic and theoretical analysis of ETN performed will advance the detection and identification capabilities of field measuring instruments for this explosive.
C1 [Oleske, Jeffrey B.; Smith, Barry T.] US Dept Homeland Secur, Transportat Secur Lab, EMXLAB, Atlantic City Int Airport, Atlantic City, NJ 08405 USA.
[Barber, Jeffrey; Weatherall, James C.] Battelle Mem Inst, Egg Harbor Township, NJ 08234 USA.
[Oleske, Jeffrey B.] Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA.
RP Smith, BT (reprint author), US Dept Homeland Secur, Transportat Secur Lab, EMXLAB, Atlantic City Int Airport, Atlantic City, NJ 08405 USA.
EM barry.t.smith@hq.dhs.gov
FU DOE [DE-AC05-06OR23100]
FX This research was supported in part by an appointment to the TSL
Visiting Scientist Program administered by the Oak Ridge Institute for
Science and Education through an interagency agreement between the U.S.
Department of Energy and the U.S. Department of Homeland Security. ORISE
is managed by Oak Ridge Associated Universities (ORAU) under DOE
contract number DE-AC05-06OR23100. The authors wish to thank David
Hernandez of the TSL Trace Lab for synthesis of ETN and Marc L. Richard,
Associate Professor of Chemistry at Richard Stockton College of New
Jersey, for use of the Thermo Scientific Nicolet iS50 FT-IR
spectrometer. The United States Government does not endorse products or
manufacturers. Trade or manufacturers' names appear herein solely
because they are considered essential to the objective of this report.
NR 36
TC 0
Z9 0
U1 1
U2 9
PU SOC APPLIED SPECTROSCOPY
PI FREDERICK
PA 5320 SPECTRUM DRIVE SUITE C, FREDERICK, MD 21703 USA
SN 0003-7028
EI 1943-3530
J9 APPL SPECTROSC
JI Appl. Spectrosc.
PD DEC
PY 2015
VL 69
IS 12
BP 1397
EP 1402
DI 10.1366/14-07684
PG 6
WC Instruments & Instrumentation; Spectroscopy
SC Instruments & Instrumentation; Spectroscopy
GA CY1DG
UT WOS:000366146300005
PM 26647149
ER
PT J
AU Gibbons, BC
Chambers, MC
Monroe, ME
Tabb, DL
Payne, SH
AF Gibbons, Bryson C.
Chambers, Matthew C.
Monroe, Matthew E.
Tabb, David L.
Payne, Samuel H.
TI Correcting systematic bias and instrument measurement drift with
mzRefinery
SO BIOINFORMATICS
LA English
DT Article
ID LOCK MASS; PROTEOMICS; SPECTROMETRY; INJECTION; ACCURACY; SOFTWARE
AB Motivation: Systematic bias in mass measurement adversely affects data quality and negates the advantages of high precision instruments.
Results: We introduce the mzRefinery tool for calibration of mass spectrometry data files. Using confident peptide spectrum matches, three different calibration methods are explored and the optimal transform function is chosen. After calibration, systematic bias is removed and the mass measurement errors are centered at 0 ppm. Because it is part of the ProteoWizard package, mzRefinery can read and write a wide variety of file formats.
C1 [Gibbons, Bryson C.; Monroe, Matthew E.; Payne, Samuel H.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99354 USA.
[Chambers, Matthew C.; Tabb, David L.] Vanderbilt Univ, Sch Med, Dept Biomed Informat, Nashville, TN 37232 USA.
RP Payne, SH (reprint author), Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99354 USA.
EM samuel.payne@pnnl.gov
FU NIH National Institute of General Medical Sciences [GM103493];
Department of Energy Office of Biological and Environmental Research
Genome Sciences Program under the Pan-omics program; U.S. Department of
Energy, Office of Science, Office of Biological and Environmental
Research, Early Career Research Program; National Cancer Institute [U24
CA159988]
FX Portions of this work were supported by the NIH National Institute of
General Medical Sciences (GM103493), and by the Department of Energy
Office of Biological and Environmental Research Genome Sciences Program
under the Pan-omics program. S.H.P. was supported by the U.S. Department
of Energy, Office of Science, Office of Biological and Environmental
Research, Early Career Research Program. D.L.T. and M.C.C. were
supported through U24 CA159988 from the National Cancer Institute.
NR 7
TC 1
Z9 1
U1 0
U2 2
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1367-4803
EI 1460-2059
J9 BIOINFORMATICS
JI Bioinformatics
PD DEC 1
PY 2015
VL 31
IS 23
BP 3838
EP 3840
DI 10.1093/bioinformatics/btv437
PG 3
WC Biochemical Research Methods; Biotechnology & Applied Microbiology;
Computer Science, Interdisciplinary Applications; Mathematical &
Computational Biology; Statistics & Probability
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Computer Science; Mathematical & Computational Biology; Mathematics
GA CY4LA
UT WOS:000366378400019
PM 26243018
ER
PT J
AU Gao, ZM
Smith, DE
Daw, CS
Edwards, KD
Kaul, BC
Domingo, N
Parks, JE
Jones, PT
AF Gao, Zhiming
Smith, David E.
Daw, C. Stuart
Edwards, K. Dean
Kaul, Brian C.
Domingo, Norberto
Parks, James E., II
Jones, Perry T.
TI The evaluation of developing vehicle technologies on the fuel economy of
long-haul trucks
SO ENERGY CONVERSION AND MANAGEMENT
LA English
DT Article
DE Fuel economy; Long-haul truck; Hybridization; Load reduction; Efficiency
enhancement
ID COMPRESSION IGNITION; BATTERY MODEL; EMISSIONS; COMBUSTION; RCCI
AB We present fuel savings estimates resulting from the combined implementation of multiple advanced energy management technologies in both conventional and parallel hybrid Class 8 diesel trucks. The energy management technologies considered here have been specifically targeted by the 21st Century Truck Partnership (21 CTP) between the U.S. Department of Energy and U.S. industry and include advanced combustion engines, waste heat recovery, and reductions in auxiliary loads, rolling resistance, aerodynamic drag, and gross vehicle weight. We estimate that combined use of all these technologies in hybrid trucks has the potential to improve fuel economy by more than 60% compared to current conventional trucks, but this requires careful system integration to avoid non-optimal interactions. Major factors to be considered in system integration are discussed. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Gao, Zhiming; Smith, David E.; Daw, C. Stuart; Edwards, K. Dean; Kaul, Brian C.; Domingo, Norberto; Parks, James E., II; Jones, Perry T.] Oak Ridge Natl Lab, Natl Transportat Res Ctr, Knoxville, TN 37932 USA.
RP Gao, ZM (reprint author), Oak Ridge Natl Lab, Natl Transportat Res Ctr, 2360 Cherahala Blvd, Knoxville, TN 37932 USA.
RI Kaul, Brian/G-4056-2014;
OI Kaul, Brian/0000-0001-8481-3620; Gao, Zhiming/0000-0002-7139-7995
FU U.S. Department of Energy Office of Vehicle Technologies
FX This work was sponsored by the U.S. Department of Energy Office of
Vehicle Technologies, with David Anderson as a project manager. The
authors wish to our colleagues at ORNL, who contributed helpful
suggestions and insights.
NR 44
TC 3
Z9 3
U1 3
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0196-8904
EI 1879-2227
J9 ENERG CONVERS MANAGE
JI Energy Conv. Manag.
PD DEC
PY 2015
VL 106
BP 766
EP 781
DI 10.1016/j.enconman.2015.10.006
PG 16
WC Thermodynamics; Energy & Fuels; Mechanics
SC Thermodynamics; Energy & Fuels; Mechanics
GA CX9YU
UT WOS:000366063500070
ER
PT J
AU Lafontaine, S
Schrlau, J
Butler, J
Jia, YL
Harper, B
Harris, S
Bramer, LM
Waters, KM
Harding, A
Simonich, SLM
AF Lafontaine, Scott
Schrlau, Jill
Butler, Jack
Jia, Yuling
Harper, Barbara
Harris, Stuart
Bramer, Lisa M.
Waters, Katrina M.
Harding, Anna
Simonich, Staci L. Massey
TI Relative Influence of Trans-Pacific and Regional Atmospheric Transport
of PAHs in the Pacific Northwest, US
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID POLYCYCLIC AROMATIC-HYDROCARBONS; SEMIVOLATILE ORGANIC-COMPOUNDS;
PARTICULATE MATTER; CARBON; AIR; PARTICLES; EMISSIONS; MUTAGENICITY;
COMBUSTION; PESTICIDES
AB The relative influences of trans-Pacific and regional atmospheric transport on measured concentrations of polycyclic aromatic hydrocarbons (PAHs), PAR derivatives (nitro- (NPAH) and oxy-(OPAH)), organic carbon (OC), and particulate matter (PM) less than 2.5 mu m in diameter (PM2.5) were investigated in the Pacific Northwest, U.S. in 2010-2011. Ambient high volume PM2.5 air samples were collected at two sites in the Pacific Northwest: (1.) Mount Bachelor Observatory (MBO) in the Oregon Cascade Range (2763 m above sea level (asl)) and 2.) Confederated Tribes of the Umatilla Indian Reservation (CTUIR) in the Columbia River Gorge (CRG) (954 m asl). At MBO, the 1,8-dinitropyrene concentration was significantly positively correlated with the time a sampled air mass spent over Asia, suggesting that this NPAH may be a good marker for trans-Pacific atmospheric transport. At CTUIR, NOx, CO2, and SO2 emissions from a 585 MW coal fired power plant, in Boardman OR, were found to be significantly positively correlated with PAR, OPAH, NPAH, OC, and PM2.5 concentrations. By comparing the Boardman Plant operational time frames when the plant was operating to when it was shut down, the plant was found to contribute a large percentage of the measured PAR (67%), NPAH (91%), OPAH (54%), PM2.5 (39%), and OC (38%) concentrations at CTUIR and the CRG prior to Spring 2011 and likely masked trans-Pacific atmospheric transport events to the CRG. Upgrades installed to the Boardman Plant in the spring of 2011 dramatically reduced the plant's contribution to PAR and OPAH concentrations (by similar to 72% and similar to 40%, respectively) at CTUIR and the CRG, but not NPAH, PM2.5 or OC concentrations.
C1 [Lafontaine, Scott; Simonich, Staci L. Massey] Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA.
[Schrlau, Jill; Jia, Yuling; Simonich, Staci L. Massey] Oregon State Univ, Environm & Mol Toxicol, Corvallis, OR 97331 USA.
[Butler, Jack; Harper, Barbara; Harris, Stuart] Confederated Tribes Umatilla Indian Reservat, Pendleton, OR 97801 USA.
[Harper, Barbara; Harding, Anna] Oregon State Univ, Coll Publ Hlth & Human Sci, Sch Biol & Populat Hlth Sci, Corvallis, OR 97331 USA.
[Bramer, Lisa M.] Pacific NW Natl Lab, Computat & Stat Analyt, Richland, WA 99352 USA.
[Waters, Katrina M.] Pacific NW Natl Lab, Computat Biol & Bioinformat, Richland, WA 99352 USA.
RP Simonich, SLM (reprint author), Oregon State Univ, Dept Chem, Gilbert Hall 153, Corvallis, OR 97331 USA.
EM staci.simonich@orst.edu
RI Bramer, Lisa/L-9184-2016
OI Bramer, Lisa/0000-0002-8384-1926
FU National Institute of Environmental Health Sciences (NIEHS), NIH
[P30ES00210]; NIEHS [P42 ES016465]; NSF [AGS-1411214]
FX This publication was made possible in part by grant number P30ES00210
from the National Institute of Environmental Health Sciences (NIEHS),
NIH, NIEHS grant number P42 ES016465, and NSF grant number AGS-1411214.
Its contents are solely the responsibility of the authors and do not
necessarily represent the official view of the NIEHS, NIH. We thank
Prof. Dan Jaffe from UW-Bothell for atmospheric pollutant and
meteorological data for MBO and David Yu of OSU for performing the Ames
testing.
NR 47
TC 3
Z9 4
U1 10
U2 36
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
EI 1520-5851
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD DEC 1
PY 2015
VL 49
IS 23
BP 13807
EP 13816
DI 10.1021/acs.est.5b00800
PG 10
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA CX8CP
UT WOS:000365930500011
PM 26151337
ER
PT J
AU Dilmanian, FA
Eley, JG
Rusek, A
Krishnan, S
AF Dilmanian, F. Avraham
Eley, John G.
Rusek, Adam
Krishnan, Sunil
TI Charged Particle Therapy with Mini-Segmented Beams
SO FRONTIERS IN ONCOLOGY
LA English
DT Article
DE proton therapy; light-ion therapy; carbon therapy; proton minibeams;
light-ion minibeams; carbon minibeams; tissue-sparing effect;
interleaved carbon minibeams
ID X-RAY MICROBEAMS; MICROPLANAR BEAMS; MOUSE-BRAIN; RADIATION-THERAPY;
SPINAL-CORD; RADIOSURGERY; TISSUE; TUMORS; IRRADIATION; TOLERANCE
AB One of the fundamental attributes of proton therapy and carbon ion therapy is the ability of these charged particles to spare tissue distal to the targeted tumor. This significantly reduces normal tissue toxicity and has the potential to translate to a wider therapeutic index. Although, in general, particle therapy also reduces dose to the proximal tissues, particularly in the vicinity of the target, dose to the skin and to other very superficial tissues tends to be higher than that of megavoltage x-rays. The methods presented here, namely, "interleaved carbon minibeams" and "radiosurgery with arrays of proton and light ion minibeams," both utilize beams segmented into arrays of parallel "minibeams" of about 0.3 mm incident-beam size. These minibeam arrays spare tissues, as demonstrated by synchrotron x-ray experiments. An additional feature of particle minibeams is their gradual broadening due to multiple Coulomb scattering as they penetrate tissues. In the case of interleaved carbon minibeams, which do not broaden much, two arrays of planar carbon minibeams that remain parallel at target depth, are aimed at the target from 90 angles and made to "interleave" at the target to produce a solid radiation field within the target. As a result, the surrounding tissues are exposed only to individual carbon minibeam arrays and are therefore spared. The method was used in four-directional geometry at the NASA Space Radiation Laboratory to ablate a 6.5-mm target in a rabbit brain at a single exposure with 40 Gy physical absorbed dose. Contrast enhanced magnetic resonance imaging and histology 6-month later showed very focal target necrosis with nearly no damage to the surrounding brain. As for minibeams of protons and light ions, for which the minibeam broadening is substantial, measurements at MD Anderson Cancer Center in Houston, TX, USA; and Monte Carlo simulations showed that the broadening minibeams will merge with their neighbors at a certain tissue depth to produce a solid beam to treat the target. The resulting sparing of proximal normal tissue allows radiosurgical ablative treatments with smaller impact on the skin and shallow tissues. This report describes these two methods and discusses their potential clinical applications.
C1 [Dilmanian, F. Avraham] SUNY Stony Brook, Dept Radiat Oncol, Hlth Sci Ctr, Stony Brook, NY 11794 USA.
[Dilmanian, F. Avraham] SUNY Stony Brook, Dept Neurol, Hlth Sci Ctr, Stony Brook, NY 11794 USA.
[Dilmanian, F. Avraham] SUNY Stony Brook, Dept Radiol, Hlth Sci Ctr, Stony Brook, NY 11794 USA.
[Eley, John G.] Univ Maryland, Sch Med, Dept Radiat Oncol, Baltimore, MD 21201 USA.
[Rusek, Adam] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Rusek, Adam] NASA, Space Radiat Lab, Upton, NY USA.
[Krishnan, Sunil] Univ Texas MD Anderson Canc Ctr, Dept Radiat Oncol, Houston, TX 77030 USA.
RP Dilmanian, FA (reprint author), SUNY Stony Brook, Dept Radiat Oncol, Hlth Sci Ctr, Stony Brook, NY 11794 USA.
EM avraham.dilmanian@stonybrook.edu
FU Musella Brain Tumor Foundation; Voices against Brain Cancer; Concerned
Women of the Grove; Stony Brook's Targeted Research Opportunities
Program; Radiation Oncology Departments of Stony Brook University; MD
Anderson Cancer Center; Stony Brook Cancer Center, Radiation Oncology,
and Radiology
FX The studies presented in this report were supported by grants from the
Musella Brain Tumor Foundation, Voices against Brain Cancer, Concerned
Women of the Grove, and the Stony Brook's Targeted Research
Opportunities Program. Supports were also provided by the Radiation
Oncology Departments of Stony Brook University and MD Anderson Cancer
Center. One of us (ED) thanks Stony Brook Cancer Center, Radiation
Oncology, and Radiology for support, and one of us (SK) acknowledges the
John E. and Dorothy J. Harris Endowment Professorship. We also thank
Tiffany Bowman and Katherine Gebhart for assistance with graphic arts.
NR 25
TC 0
Z9 0
U1 1
U2 3
PU FRONTIERS MEDIA SA
PI LAUSANNE
PA PO BOX 110, EPFL INNOVATION PARK, BUILDING I, LAUSANNE, 1015,
SWITZERLAND
SN 2234-943X
J9 FRONT ONCOL
JI Front. Oncol.
PD DEC 1
PY 2015
VL 5
AR 269
DI 10.3389/fonc.2015.00269
PG 8
WC Oncology
SC Oncology
GA CY3UO
UT WOS:000366335600002
PM 26649281
ER
PT J
AU Guzman, HJ
Xu, WQ
Stacchiola, D
Vitale, G
Scott, CE
Rodriguez, JA
Pereira-Almao, P
AF Guzman, Hector J.
Xu, Wenqian
Stacchiola, Dario
Vitale, Gerardo
Scott, Carlos E.
Rodriguez, Jose A.
Pereira-Almao, Pedro
TI Formation of beta-Mo2C below 600 degrees C using MoO2 nanoparticles as
precursor
SO JOURNAL OF CATALYSIS
LA English
DT Article
DE Molybdenum carbide; Molybdenum dioxide; In-situ XRD; Carburization;
Nanoparticles; Synchrotron; Methane; Ethylene glycol
ID MOLYBDENUM CARBIDES; CATALYSTS; METHANOL; HYDROGENATION; HYDROGENOLYSIS;
OXIDATION; BENZENE; METHYL; ETHANE; MO2C
AB In this work MoO2 nanoparticles were prepared using ethylene glycol as a reducing agent and their transformation into the desired phase beta-Mo(2)c (hexagonal) was followed by in-situ X-ray diffraction with synchrotron radiation. CH4/H-2 was employed as carburizing mixture and two different concentrations were tested, 10 and 20% v/v. TEM images obtained indicated that the particle size of the oxide precursor was about 4 nm while the XRD patterns showed that an amorphous phase precipitated along with the crystalline phase. This amorphous phase seemed to decrease the onset temperature of carburization and its transformation started before the crystalline MoO2. On the other hand, an effect from the orientation of the (011), (-211) and (022) faces of the MoO2 precursor toward a less energy demanding transformation might be occurring as well. The carburization process of the amorphous phase/MoO2 nanoparticles started at about 560 degrees C, while in contrast for a commercial MoO2 such process began at the temperature commonly reported in the literature (similar to 670 degrees C). The hexagonal, thermodynamically stable phase of the Mo2C was the main carburization product and no other intermediate phases were detected by XRD. The gas stream of the reaction was analyzed by mass spectrometry indicating the formation of CO and H2O as by-products of the formation of the carbide. (C) 2015 Elsevier Inc. All rights reserved.
C1 [Guzman, Hector J.; Vitale, Gerardo] Univ Calgary, Dept Chem, Calgary, AB T2N 1N4, Canada.
[Xu, Wenqian; Stacchiola, Dario; Rodriguez, Jose A.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Scott, Carlos E.; Pereira-Almao, Pedro] Univ Calgary, Schulich Sch Engn, Calgary, AB T2N 1N4, Canada.
RP Guzman, HJ (reprint author), Univ Calgary, Dept Chem, Calgary, AB T2N 1N4, Canada.
EM hguzman64@gmail.com
RI Stacchiola, Dario/B-1918-2009
OI Stacchiola, Dario/0000-0001-5494-3205
FU Natural Sciences and Engineering Research Council of Canada (NSERC);
Nexen-CNOOC Ltd; Alberta Innovates-Energy and Environment Solutions
(AIEES); US Department of the Energy (DOE), Office of Basic Energy
Sciences (BES) [DE-AC02-98CH10886]
FX The authors want to acknowledge the Natural Sciences and Engineering
Research Council of Canada (NSERC), Nexen-CNOOC Ltd, and Alberta
Innovates-Energy and Environment Solutions (AIEES) for the financial
support provided through the NSERC/NEXEN/AIEES Industrial Research Chair
in Catalysis for Bitumen Upgrading. Also, the contribution of facilities
from the Canada Foundation for Innovation, the Institute for Sustainable
Energy, Environment and Economy, the Schulich School of Engineering and
the Faculty of Science at the University of Calgary is greatly
appreciated. The work carried out at the Brookhaven National Laboratory
(BNL) was possible thanks to the US Department of the Energy (DOE),
Office of Basic Energy Sciences (BES; Grant No DE-AC02-98CH10886).
Extended thanks to Aaron Johnston-Peck for the STEM images acquired at
the Center for Functional Nanomaterials (CFN) at Brookhaven National
Laboratory (BNL) and to Dr. Ursula Ehrmann for helpful discussions
regarding the mass spectrometry results.
NR 32
TC 0
Z9 0
U1 16
U2 82
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9517
EI 1090-2694
J9 J CATAL
JI J. Catal.
PD DEC
PY 2015
VL 332
BP 83
EP 94
DI 10.1016/j.jcat.2015.09.013
PG 12
WC Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA CY0CI
UT WOS:000366073500010
ER
PT J
AU Dama, JF
Hocky, GM
Sun, R
Voth, GA
AF Dama, James F.
Hocky, Glen M.
Sun, Rui
Voth, Gregory A.
TI Exploring Valleys without Climbing Every Peak: More Efficient and
Forgiving Metabasin Metadynamics via Robust On-the-Fly Bias Domain
Restriction
SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION
LA English
DT Article
ID MOLECULAR-DYNAMICS SIMULATIONS; FREE-ENERGY CALCULATIONS; CLC CHLORIDE
CHANNELS; PARTICLE MESH EWALD; RANDOM-WALK; ACTIN; DISTRIBUTIONS;
PROTEINS; FORCE; BIOMOLECULES
AB Metadynamics is an enhanced sampling method designed to flatten free energy surfaces uniformly. However, the highest-energy regions are often irrelevant to study and dangerous to explore because systems often change irreversibly in unforeseen ways in response to driving forces in these regions, spoiling the sampling. Introducing an on-the-fly domain restriction allows metadynamics to flatten only up to a specified energy level and no further, improving efficiency and safety while decreasing the pressure on practitioners to design collective variables that are robust to otherwise irrelevant high energy driving. This paper describes a new method that achieves this using sequential on-the-fly estimation of energy wells and redefinition of the metadynamics hill shape, termed metabasin metadynamics. The energy level may be defined a priori or relative to unknown barrier energies estimated on-the-fly. Altering only the hill ensures that the method is compatible with many other advances in metadynamics methodology. The hill shape has a natural interpretation in terms of multiscale dynamics, and the computational overhead in simulation is minimal when studying systems of any reasonable size, for instance proteins or other macromolecules. Three example applications show that the formula is accurate and robust to complex dynamics, making metadynamics significantly more forgiving with respect to CV quality and thus more feasible to apply to the most challenging biomolecular systems.
C1 [Dama, James F.; Hocky, Glen M.; Sun, Rui; Voth, Gregory A.] Univ Chicago, Dept Chem, James Franck Inst, Inst Biophys Dynam, Chicago, IL 60637 USA.
[Dama, James F.; Hocky, Glen M.; Sun, Rui; Voth, Gregory A.] Univ Chicago, Computat Inst, Chicago, IL 60637 USA.
[Dama, James F.; Voth, Gregory A.] Los Alamos Natl Lab, Div Theoret, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Voth, GA (reprint author), Univ Chicago, Dept Chem, James Franck Inst, Inst Biophys Dynam, 5735 S Ellis Ave, Chicago, IL 60637 USA.
EM gavoth@uchicago.edu
RI Hocky, Glen/E-9412-2012
OI Hocky, Glen/0000-0002-5637-0698
FU National Science Foundation through the Center for Multiscale Theory and
Simulation (NSF) [CHE-1136709]; NSF [CHE-1465248]; National Institutes
of Health (NIH) [R01-GM053148]; Department of Energy through the
LANL/LDRD program; National Science Foundation [ACT-1053575]
FX This research was supported by the National Science Foundation through
the Center for Multiscale Theory and Simulation (NSF Grant CHE-1136709)
and NSF Grant CHE-1465248, as well as by the National Institutes of
Health (NIH Grant R01-GM053148) and by the Department of Energy through
the LANL/LDRD program. Simulations were performed in part using
resources provided by the University of Chicago Research Computing
Center (Midway) and the San Diego Supercomputing Center (Comet) through
the Extreme Science and Engineering Discovery Environment (XSEDE), which
is supported by National Science Foundation grant number ACT-1053575.
The authors thank Sangyun Lee for his aid in preparing simulations of
ClC.
NR 83
TC 7
Z9 7
U1 4
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1549-9618
EI 1549-9626
J9 J CHEM THEORY COMPUT
JI J. Chem. Theory Comput.
PD DEC
PY 2015
VL 11
IS 12
BP 5638
EP 5650
DI 10.1021/acs.jctc.5b00907
PG 13
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA CY2FE
UT WOS:000366223400009
PM 26587809
ER
PT J
AU van Setten, MJ
Caruso, F
Sharifzadeh, S
Ren, XG
Scheffler, M
Liu, F
Lischner, J
Lin, L
Deslippe, JR
Louie, SG
Yang, C
Weigend, F
Neaton, JB
Evers, F
Rinke, P
AF van Setten, Michiel J.
Caruso, Fabio
Sharifzadeh, Sahar
Ren, Xinguo
Scheffler, Matthias
Liu, Fang
Lischner, Johannes
Lin, Lin
Deslippe, Jack R.
Louie, Steven G.
Yang, Chao
Weigend, Florian
Neaton, Jeffrey B.
Evers, Ferdinand
Rinke, Patrick
TI GW100: Benchmarking G(0)W(0) for Molecular Systems
SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION
LA English
DT Article
ID RANDOM-PHASE-APPROXIMATION; DENSITY-FUNCTIONAL THEORY; SPACE GAUSSIAN
PSEUDOPOTENTIALS; GREENS-FUNCTIONS THEORY; QUASI-PARTICLE; GW
APPROXIMATION; BASIS-SETS; ELECTRONIC EXCITATIONS;
IONIZATION-POTENTIALS; DIELECTRIC-CONSTANT
AB We present the GW100 set. GW100 is a benchmark set of the ionization potentials and electron affinities of 100 molecules computed with the GW method using three independent GW codes and different GW methodologies. The quasi-particle energies of the highest-occupied molecular orbitals (HOMO) and lowest-unoccupied molecular orbitals (LUMO) are calculated for the GW100 set at the G(0)W(0)@PBE level using the software packages TURBOMOLE, FHI-aims, and BerkeleyGW. The use of these three codes allows for a quantitative comparison of the type of basis set (plane wave or local orbital) and handling of unoccupied states, the treatment of core and valence electrons (all electron or pseudopotentials), the treatment of the frequency dependence of the self-energy (full frequency or more approximate plasmon-pole models), and the algorithm for solving the quasi-particle equation. Primary results include reference values for future benchmarks, best practices for convergence within a particular approach, and average error bars for the most common approximations.
C1 [van Setten, Michiel J.] Catholic Univ Louvain, Inst Condensed Matter & Nanosci, Nanoscop Phys, B-1348 Louvain La Neuve, Belgium.
[van Setten, Michiel J.; Weigend, Florian] Karlsruhe Inst Technol, Inst Nanotechnol, D-76344 Karlsruhe, Germany.
[Weigend, Florian] Karlsruhe Inst Technol, Inst Phys Chem, D-76344 Karlsruhe, Germany.
[Caruso, Fabio; Ren, Xinguo; Scheffler, Matthias; Rinke, Patrick] Fritz Haber Inst Max Planck Gesellschaft, Berlin, Germany.
[Caruso, Fabio] Univ Oxford, Dept Mat, Oxford OX1 3PH, England.
[Sharifzadeh, Sahar; Neaton, Jeffrey B.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Lischner, Johannes; Louie, Steven G.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Lin, Lin; Yang, Chao] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA.
[Ren, Xinguo] Univ Sci & Technol China, Key Lab Quantum Informat, Hefei 230026, Peoples R China.
[Liu, Fang] Cent Univ Finance & Econ, Sch Appl Math, Beijing, Peoples R China.
[Lischner, Johannes; Louie, Steven G.; Neaton, Jeffrey B.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Deslippe, Jack R.] Natl Energy Res Sci Comp Ctr, Berkeley, CA 94720 USA.
[Neaton, Jeffrey B.] Kavli Energy NanoSci Inst Berkeley, Berkeley, CA 94720 USA.
[Evers, Ferdinand] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany.
[Rinke, Patrick] Aalto Univ, Sch Sci, Dept Appl Phys, COMP, Aalto 00076, Finland.
[Sharifzadeh, Sahar] Boston Univ, Div Mat Sci & Engn, Dept Phys, Dept Elect & Comp Engn, Boston, MA 02215 USA.
RP van Setten, MJ (reprint author), Catholic Univ Louvain, Inst Condensed Matter & Nanosci, Nanoscop Phys, B-1348 Louvain La Neuve, Belgium.
EM michiel.vansetten@uclouvain.be
RI Rinke, Patrick/A-4208-2010; Caruso, Fabio/D-5917-2013; Neaton,
Jeffrey/F-8578-2015; Ren, Xinguo/N-4768-2014; van Setten,
Michiel/B-2766-2008; Scheffler, Matthias/O-4649-2016; Sharifzadeh,
Sahar/P-4881-2016
OI Rinke, Patrick/0000-0002-5967-9965; Neaton, Jeffrey/0000-0001-7585-6135;
van Setten, Michiel/0000-0003-0557-5260; Sharifzadeh,
Sahar/0000-0003-4215-4668
FU Center for Functional Nanostructures (CFN); CPU time allocation at the
HC3 cluster at the Karlsruhe Institute of Technology (KIT) Steinbuch
Center for Computing (SCC); Academy of Finland through its Centres of
Excellence Program [251748]; Scientific Discovery through Advanced
Computing (SciDAC) [DE-AC02-05CH11231]; Office of Science, Office of
Basic Energy Sciences, of the U.S. Department of Energy
FX Financial support by the Center for Functional Nanostructures (CFN) and
CPU time allocation at the HC3 cluster at the Karlsruhe Institute of
Technology (KIT) Steinbuch Center for Computing (SCC) are gratefully
acknowledged. P.R. acknowledges support by the Academy of Finland
through its Centres of Excellence Program (Grant 251748). J.B.N, S.S.,
J.L., S.G.L, and J.R.D. were partially supported by the Scientific
Discovery through Advanced Computing (SciDAC) Partnership Program on
Excited State Phenomena in Energy Materials funded by the U.S.
Department of Energy, Office of Science, and of Advanced Scientific
Computing Research under Contract No. DE-AC02-05CH11231 at Lawrence
Berkeley National Laboratory. Work performed at the Molecular Foundry
was also supported by the Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy. We thank the National Energy
Research Scientific Computing Center and Argonne Leadership Computing
Facility for computational resources.
NR 132
TC 22
Z9 22
U1 10
U2 51
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1549-9618
EI 1549-9626
J9 J CHEM THEORY COMPUT
JI J. Chem. Theory Comput.
PD DEC
PY 2015
VL 11
IS 12
BP 5665
EP 5687
DI 10.1021/acs.jctc.5b00453
PG 23
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA CY2FE
UT WOS:000366223400011
PM 26642984
ER
PT J
AU Fattebert, JL
Lau, EY
Bennion, BJ
Huang, P
Lightstone, FC
AF Fattebert, Jean-Luc
Lau, Edmond Y.
Bennion, Brian J.
Huang, Patrick
Lightstone, Felice C.
TI Large-Scale First-Principles Molecular Dynamics Simulations with
Electrostatic Embedding: Application to Acetylcholinesterase Catalysis
SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION
LA English
DT Article
ID AB-INITIO QM/MM; DENSITY-FUNCTIONAL THEORY; FREE-ENERGY;
TRANSITION-STATES; REACTION-PRODUCTS; INTEGRATION; PROTEINS; BINDING;
SYSTEMS; MOTION
AB Enzymes are complicated solvated systems that typically require many atoms to simulate their function with any degree of accuracy. We have recently developed numerical techniques for large scale first-principles molecular dynamics simulations and applied them to the study of the enzymatic reaction catalyzed by acetylcholinesterase. We carried out density functional theory calculations for a quantum-mechanical (QM) subsystem consisting of 612 atoms with an O(N) complexity finite-difference approach. The QM subsystem is embedded inside an external potential field representing the electrostatic effect due to the environment. We obtained finite-temperature sampling by first-principles molecular dynamics for the acylation reaction of acetylcholine catalyzed by acetylcholinesterase. Our calculations show two energy barriers along the reaction coordinate for the enzyme-catalyzed acylation of acetylcholine. The second barrier (8.5 kcal/mol) is rate-limiting for the acylation reaction and in good agreement with experiment.
C1 [Fattebert, Jean-Luc] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94550 USA.
[Lau, Edmond Y.; Bennion, Brian J.; Huang, Patrick; Lightstone, Felice C.] Lawrence Livermore Natl Lab, Phys & Life Sci, Livermore, CA 94550 USA.
RP Fattebert, JL (reprint author), Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94550 USA.
EM fattebert1@llnl.gov
OI Huang, Patrick/0000-0003-4833-8134
FU Defense Threat Reduction Agency [CBS.SCIC.01.10.LLNL.004]; U.S.
Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX We thank the Defense Threat Reduction Agency for funding
(CBS.SCIC.01.10.LLNL.004). We also thank the Livermore Computing Grand
Challenge for computer time. This work was performed under the auspices
of the U.S. Department of Energy by Lawrence Livermore National
Laboratory under Contract DE-AC52-07NA27344.
NR 45
TC 1
Z9 1
U1 2
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1549-9618
EI 1549-9626
J9 J CHEM THEORY COMPUT
JI J. Chem. Theory Comput.
PD DEC
PY 2015
VL 11
IS 12
BP 5688
EP 5695
DI 10.1021/acs.jctc.5b00606
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA CY2FE
UT WOS:000366223400012
PM 26642985
ER
PT J
AU Closser, KD
Ge, QH
Mao, YZ
Shao, YH
Head-Gordon, M
AF Closser, Kristina D.
Ge, Qinghui
Mao, Yuezhi
Shao, Yihan
Head-Gordon, Martin
TI Superposition of Fragment Excitations for Excited States of Large
Clusters with Application to Helium Clusters
SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; 2ND-ORDER PERTURBATION CORRECTIONS; LOCALIZED
MOLECULAR-ORBITALS; CONSISTENT-FIELD METHOD; CONFIGURATION-INTERACTION;
GEOMETRY OPTIMIZATIONS; 2-ELECTRON INTEGRALS; QUANTUM-CHEMISTRY;
CHARGE-TRANSFER; PI-SYSTEMS
AB We develop a local excited-state method, based on the configuration interaction singles (CIS) wave function, for large atomic and molecular clusters. This method exploits the properties of absolutely localized molecular orbitals (ALMOs), which strictly limits the total number of excitations, and results in formal scaling with the third power of the system size for computing the full spectrum of ALMO-CIS excited states. The derivation of the equations and design of the algorithm are discussed in detail, with particular emphasis on the computational scaling. Clusters containing similar to 500 atoms were used in evaluating the scaling, which agrees with the theoretical predictions, and the accuracy of the method is evaluated with respect to standard CIS. A pioneering application to the size dependence of the helium cluster spectrum is also presented for clusters of 25-231 atoms, the largest of which results in the computation of 2310 excited states per sampled cluster geometry.
C1 [Closser, Kristina D.; Ge, Qinghui; Mao, Yuezhi; Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Kenneth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA.
[Closser, Kristina D.; Ge, Qinghui; Head-Gordon, Martin] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Shao, Yihan] Q Chem Inc, Pleasanton, CA 94588 USA.
RP Head-Gordon, M (reprint author), Univ Calif Berkeley, Dept Chem, Kenneth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA.
EM mhg@cchem.berkeley.edu
FU Office of Science, Office of Basic Energy Sciences, Chemical Sciences
Division of the U.S. Department of Energy [DEAC02-05CH11231]
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, Chemical Sciences Division of the U.S. Department
of Energy, under Contract No. DEAC02-05CH11231.
NR 83
TC 2
Z9 2
U1 6
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1549-9618
EI 1549-9626
J9 J CHEM THEORY COMPUT
JI J. Chem. Theory Comput.
PD DEC
PY 2015
VL 11
IS 12
BP 5791
EP 5803
DI 10.1021/acs.jctc.5b00703
PG 13
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA CY2FE
UT WOS:000366223400021
PM 26609558
ER
PT J
AU Zhang, Y
Mukamel, S
Khalil, M
Govind, N
AF Zhang, Yu
Mukamel, Shaul
Khalil, Munira
Govind, Niranjan
TI Simulating Valence-to-Core X-ray Emission Spectroscopy of Transition
Metal Complexes with Time-Dependent Density Functional Theory
SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION
LA English
DT Article
ID STATIC-EXCHANGE CALCULATIONS; BASIS-SETS; ABSORPTION SPECTROSCOPY;
ELECTRONIC-STRUCTURE; EXCITATION-ENERGIES; LARGE MOLECULES;
EXCITED-STATES; SPECTRA; ORBITALS; COORDINATION
AB Valence-to-core (VtC) X-ray emission spectroscopy (XES) has emerged as a powerful technique for the structural characterization of complex organometallic compounds in realistic environments. Since the spectrum represents electronic transitions from the ligand molecular orbitals to the core holes of the metal centers, the approach is more chemically sensitive to the metal ligand bonding character compared with conventional X-ray absorption techniques. In this paper we study how linear-response time-dependent density functional theory (LR-TDDFT) can be harnessed to simulate K-edge VtC X-ray emission spectra reliably. LR-TDDFT allows one to go beyond the single-particle picture that has been extensively used to simulate VtC-XES. We involving chromium, manganese, and iron transition metal centers. Our results consider seven low- and high-spin model complexes are in good agreement with experiment.
C1 [Zhang, Yu; Mukamel, Shaul] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA.
[Khalil, Munira] Univ Washington, Dept Chem, Seattle, WA 98195 USA.
[Govind, Niranjan] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Zhang, Y (reprint author), Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA.
EM yuz10@uci.edu; smukamel@uci.edu; niri.govind@pnnl.gov
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-SC0012450, KC030102066418]; Office of Biological and
Environmental Research; United States Department of Energy under DOE
[DE-AC05-76RL1830]; Office of Science of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This material is based upon work supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences under Award
Numbers DE-SC0012450 (Y.Z., S.M., M.K), and KC030102066418 (N.G.). This
research was performed using EMSL, a DOE Office of Science User Facility
sponsored by the Office of Biological and Environmental Research and
located at PNNL. PNNL is operated by Battelle Memorial Institute for the
United States Department of Energy under DOE contract number
DE-AC05-76RL1830. The research also benefited from resources provided by
the National Energy Research Scientific Computing Center (NERSC), a DOE
Office of Science User Facility supported by the Office of Science of
the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 55
TC 5
Z9 5
U1 7
U2 33
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1549-9618
EI 1549-9626
J9 J CHEM THEORY COMPUT
JI J. Chem. Theory Comput.
PD DEC
PY 2015
VL 11
IS 12
BP 5804
EP 5809
DI 10.1021/acs.jctc.5b00763
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA CY2FE
UT WOS:000366223400022
PM 26588191
ER
PT J
AU Weaver, JD
Gutierrez, EJ
AF Weaver, Jason D.
Gutierrez, Erick J.
TI Comparing Rotary Bend Wire Fatigue Test Methods at Different Test Speeds
SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
LA English
DT Article
DE biomaterial; test speed; wire fatigue
ID SHAPE-MEMORY ALLOY; NITINOL WIRE; FREQUENCY; DIAMETER; LIFE
AB Given its relatively simple setup and ability to produce results quickly, rotary bend fatigue testing is becoming commonplace in the medical device industry and is the subject of a new standard test method ASTM E2948-14. Although some research has been conducted to determine if results differ for different rotary bend fatigue test setups or test speeds, these parameters have not been extensively studied together. In this work, we investigate the effects of these two parameters on the fatigue life of three commonly used medical device alloys (ASTM F2063 nitinol, ASTM F138 stainless steel, and ASTM F1058 cobalt chromium). Results with three different rotary bend fatigue test setups revealed no difference in fatigue life among those setups. Increasing test speed, however, between 100 and 35,000 RPM led to an increased fatigue life for all three alloys studied (average number of cycles to fracture increased between 2.0 and 5.1 times between slowest and fastest test speed). Supplemental uniaxial tension tests of stainless steel wire at varying strain rates showed a strain rate dependence in the mechanical response which could in part explain the increased fatigue life at faster test speeds. How exactly strain rate dependence might affect the fatigue properties of different alloys at different alternating strain values requires further study. Given the difference in loading rates between benchtop fatigue tests and in vivo deformations, the potential for strain rate dependence should be considered when designing durability tests for medical devices and in extrapolating results of those tests to in vivo performance.
C1 [Weaver, Jason D.; Gutierrez, Erick J.] US FDA, Div Appl Mech, Ctr Devices & Radiol Hlth, Off Sci & Engn Labs, Silver Spring, MD 20993 USA.
[Gutierrez, Erick J.] Oak Ridge Inst Sci & Educ, Oak Ridge, TN USA.
RP Weaver, JD (reprint author), US FDA, Div Appl Mech, Ctr Devices & Radiol Hlth, Off Sci & Engn Labs, Silver Spring, MD 20993 USA.
EM jason.weaver@fda.hhs.gov
FU Division of Applied Mechanics, FDA's Medical Countermeasures Initiative;
U.S. Department of Energy; U.S. Food and Drug Administration
FX This project was supported by the Division of Applied Mechanics, FDA's
Medical Countermeasures Initiative, and an appointment to the Research
Participation Program at the Center for Devices and Radiological Health
administered by the Oak Ridge Institute for Science and Education
through an interagency agreement between the U.S. Department of Energy
and the U.S. Food and Drug Administration. The authors would like to
thank the following individuals for their thoughtful insights at various
stages of this project: Matthew Di Prima, Shiril Sivan, Terry Woods,
Kenneth L. Jerina, M. R. Mitchell, and L. D. Timmie Topoleski.
NR 23
TC 0
Z9 0
U1 1
U2 3
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1059-9495
EI 1544-1024
J9 J MATER ENG PERFORM
JI J. Mater. Eng. Perform.
PD DEC
PY 2015
VL 24
IS 12
BP 4966
EP 4974
DI 10.1007/s11665-015-1763-z
PG 9
WC Materials Science, Multidisciplinary
SC Materials Science
GA CY0PF
UT WOS:000366107300040
ER
PT J
AU Wojciechowski, KE
Baker, MS
Clews, PJ
Olsson, RH
AF Wojciechowski, Kenneth E.
Baker, Michael S.
Clews, Peggy J.
Olsson, Roy H., III
TI A Fully Integrated Oven Controlled Microelectromechanical
Oscillator-Part I: Design and Fabrication
SO JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
LA English
DT Article
DE Oscillator; aluminum nitride (A1N); resonator; oven controlled
microelectromechanical oscillator (OCMO); ovenized crystal oscillators
(OCXO); turn over temperature
ID EMISSIVITY; SILICON
AB This paper, the first of two parts, reports the design and fabrication of a fully integrated oven controlled microelectromechanical oscillator (OCMO). This paper begins by describing the limits on oscillator frequency stability imposed by the thermal drift and electronic properties (Q, resistance) of both the resonant tank circuit and feedback electronics required to form an electronic oscillator. An OCMO is presented that takes advantage of high thermal isolation and monolithic integration of both micromechanical resonators and electronic circuitry to thermally stabilize or ovenize all the components that comprise an oscillator. This was achieved by developing a processing technique where both silicon-on-insulator complementary metal-oxide-semiconductor (CMOS) circuitry and piezoelectric aluminum nitride, AlN, micromechanical resonators are placed on a suspended platform within a standard CMOS integrated circuit. Operation at microscale sizes achieves high thermal resistances (similar to 10 degrees C/mW), and hence thermal stabilization of the oscillators at very low-power levels when compared with the state-of-the-art ovenized crystal oscillators, OCXO. A constant resistance feedback circuit is presented that incorporates on platform resistive heaters and temperature sensors to both measure and stabilize the platform temperature. The limits on temperature stability of the OCMO platform and oscillator frequency imposed by the gain of the constant resistance feedback loop, placement of the heater and temperature sensing resistors, as well as platform radiative and convective heat losses are investigated.[2015-0035]
C1 [Wojciechowski, Kenneth E.; Baker, Michael S.; Clews, Peggy J.; Olsson, Roy H., III] Sandia Natl Labs, Albuquerque, NM 87123 USA.
RP Wojciechowski, KE (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
EM kwojcie@sandia.gov; msbaker@sandia.gov; pjclews@sandia.gov;
rholsso@sandia.gov
FU Laboratory Directed Research and Development Program at Sandia National
Laboratories; Rockwell Collins Inc., Cedar Rapids, IA, USA; Defense
Advanced Research Projects Agency (DARPA) Mesodynamic Architectures
Program; U.S. Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX This work was supported by the Laboratory Directed Research and
Development Program at Sandia National Laboratories; by Rockwell Collins
Inc., Cedar Rapids, IA, USA; and by the Defense Advanced Research
Projects Agency (DARPA) Mesodynamic Architectures Program. Sandia
National Laboratories is a multiprogram laboratory managed and operated
by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin
Corporation, for the U.S. Department of Energy's National Nuclear
Security Administration under Contract DE-AC04-94AL85000. Subject Editor
G. Piazza.
NR 26
TC 1
Z9 1
U1 0
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1057-7157
EI 1941-0158
J9 J MICROELECTROMECH S
JI J. Microelectromech. Syst.
PD DEC
PY 2015
VL 24
IS 6
BP 1782
EP 1794
DI 10.1109/JMEMS.2015.2441037
PG 13
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Instruments & Instrumentation; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Instruments &
Instrumentation; Physics
GA CX8XB
UT WOS:000365987000015
ER
PT J
AU Wojciechowski, KE
Olsson, RH
AF Wojciechowski, Kenneth E.
Olsson, Roy H., III
TI A Fully Integrated Oven Controlled Microelectromechanical
Oscillator-Part II: Characterization and Measurement
SO JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
LA English
DT Article
DE Oscillator; aluminum nitride; resonator; oven controlled micro
electromechanical oscillator (OCMO); oven controlled crystal oscillator
(OCXO); turn over temperature
AB This paper, the second of two parts, reports the measurement and characterization of a fully integrated oven controlled microelectromechanical oscillator (OCMO). The OCMO takes advantage of high thermal isolation and monolithic integration of both aluminum nitride (AlN) micromechanical resonators and electronic circuitry to thermally stabilize or ovenize all the components that comprise an oscillator. Operation at microscale sizes allows implementation of high thermal resistance platform supports that enable thermal stabilization at very low-power levels when compared with the state-of-the-art oven controlled crystal oscillators. A prototype OCMO has been demonstrated with a measured temperature stability of -1.2 ppb/degrees C, over the commercial temperature range while using tens of milliwatts of supply power and with a volume of 2.3 mm(3) (not including the printed circuit board-based thermal control loop). In addition, due to its small thermal time constant, the thermal compensation loop can maintain stability during fast thermal transients (>10 degrees C/min). This new technology has resulted in a new paradigm in terms of power, size, and warm up time for high thermal stability oscillators. [2015-0036]
C1 [Wojciechowski, Kenneth E.; Olsson, Roy H., III] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Olsson, Roy H., III] Def Adv Res Projects Agcy, Arlington, VA 22203 USA.
RP Wojciechowski, KE (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
EM kwojcie@sandia.gov; rholsso@sandia.gov
FU Laboratory Directed Research and Development Program at Sandia National
Laboratories; Rockwell Collins Inc., Cedar Rapids, IA, USA; Defense
Advanced Research Projects Agency (DARPA) Mesodynamic Architectures
Program; U.S. Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX This work was supported by the Laboratory Directed Research and
Development Program at Sandia National Laboratories, by Rockwell Collins
Inc., Cedar Rapids, IA, USA, and by the Defense Advanced Research
Projects Agency (DARPA) Mesodynamic Architectures Program. Sandia
National Laboratories is a multiprogram laboratory managed and operated
by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin
Corporation, for the U.S. Department of Energy's National Nuclear
Security Administration under Contract DE-AC04-94AL85000. Subject Editor
G. Piazza.
NR 14
TC 3
Z9 3
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1057-7157
EI 1941-0158
J9 J MICROELECTROMECH S
JI J. Microelectromech. Syst.
PD DEC
PY 2015
VL 24
IS 6
BP 1795
EP 1802
DI 10.1109/JMEMS.2015.2441045
PG 8
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Instruments & Instrumentation; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Instruments &
Instrumentation; Physics
GA CX8XB
UT WOS:000365987000016
ER
PT J
AU Abraham, PE
Wang, XJ
Ranjan, P
Nookaew, I
Zhang, B
Tuskan, GA
Hettich, RL
AF Abraham, Paul E.
Wang, Xiaojing
Ranjan, Priya
Nookaew, Intawat
Zhang, Bing
Tuskan, Gerald A.
Hettich, Robert L.
TI Integrating mRNA and Protein Sequencing Enables the Detection and
Quantitative Profiling of Natural Protein Sequence Variants of Populus
trichocarpa
SO JOURNAL OF PROTEOME RESEARCH
LA English
DT Article
DE natural variants; mass spectrometry; shotgun proteomics; RNA sequencing;
genotype-specific protein database
ID GENOME-WIDE ASSOCIATION; SEQ DATA; PEPTIDE IDENTIFICATION; SHOTGUN
PROTEOMICS; BLACK COTTONWOOD; SELECTION; TRAITS; TRANSCRIPTOMES;
DATABASES; DISEASES
AB Next-generation sequencing has transformed the ability to link genotypes to phenotypes and facilitates the dissection of genetic contribution to complex traits. However, it is challenging to link genetic variants with the perturbed functional effects on proteins encoded by such genes. Here we show how RNA sequencing can be exploited to construct genotype-specific protein sequence databases to assess natural variation in proteins, providing information about the molecular toolbox driving cellular processes. For this study, we used two natural genotypes selected from a recent genomewide association study of Populus trichoccupa, an obligate outcrosser with tremendous phenotypic variation across the natural population. This strategy allowed us to comprehensively catalogue proteins containing single amino acid polymorphisms (SAAPs), as well as insertions and deletions. We profiled the frequency of 128 types of naturally occurring amino acid substitutions, including both expected (neutral) and unexpected (non-neutral) SAAPs, with a subset occurring in regions of the genome having strong polymorphism patterns consistent with recent positive and/or divergent selection. By zeroing in on the molecular signatures of these important regions that might have previously been uncharacterized, we now provide a high-resolution molecular inventory that should improve accessibility and subsequent identification of natural protein variants in future genotype-to-phenotype studies.
C1 [Abraham, Paul E.; Ranjan, Priya; Hettich, Robert L.] Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA.
[Nookaew, Intawat; Tuskan, Gerald A.] Oak Ridge Natl Lab, Div Biol Sci, Oak Ridge, TN 37831 USA.
[Wang, Xiaojing; Zhang, Bing] Vanderbilt Univ, Sch Med, Dept Biomed Informat, Nashville, TN 37232 USA.
RP Hettich, RL (reprint author), Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA.
EM hettichrl@ornl.gov
RI Abraham, Paul/K-5599-2015; Hettich, Robert/N-1458-2016; Tuskan,
Gerald/A-6225-2011
OI Hettich, Robert/0000-0001-7708-786X; Tuskan, Gerald/0000-0003-0106-1289
FU BioEnergy Science Center; U.S. Department of Energy Bioenergy Research
Facility - Office of Biological and Environmental Research, Genome
Sciences program in the DOE Office of Science
FX This study was funded within the BioEnergy Science Center, a U.S.
Department of Energy Bioenergy Research Facility supported by the Office
of Biological and Environmental Research, Genome Sciences program, in
the DOE Office of Science. University of Tennessee-Battelle LLC manages
Oak Ridge National Laboratory for the Department of Energy.
NR 45
TC 0
Z9 0
U1 0
U2 3
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1535-3893
EI 1535-3907
J9 J PROTEOME RES
JI J. Proteome Res.
PD DEC
PY 2015
VL 14
IS 12
BP 5318
EP 5326
DI 10.1021/acs.jproteome.5b00823
PG 9
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA CY1FJ
UT WOS:000366151800035
PM 26483142
ER
PT J
AU Venkatesan, GA
Lee, J
Farimani, AB
Heiranian, M
Collier, CP
Aluru, NR
Sarles, SA
AF Venkatesan, Guru A.
Lee, Joonho
Farimani, Amir Barati
Heiranian, Mohammad
Collier, C. Patrick
Aluru, Narayana R.
Sarles, Stephen A.
TI Adsorption Kinetics Dictate Mono layer Self-Assembly for Both Lipid-In
and Lipid-Out Approaches to Droplet Interface Bilayer Formation
SO LANGMUIR
LA English
DT Article
ID DYNAMIC SURFACE-TENSION; AIR-WATER-INTERFACE; AIR/WATER INTERFACE;
REVERSE MICELLES; PHOSPHOLIPIDS; MONOLAYERS; SYSTEMS; OIL; CAPACITANCE;
PARAMETERS
AB The droplet interface bilayer (DIB)a method to assemble planar lipid bilayer membranes between lipid-coated aqueous dropletshas gained popularity among researchers in many fields. Well-packed lipid monolayer on aqueous dropletoil interfaces is a prerequisite for successfully assembling DIBs. Such monolayers can be achieved by two different techniques: lipid-in, in which phospholipids in the form of liposomes are placed in water, and lipid-out, in which phospholipids are placed in oil as inverse micelles. While both approaches are capable of monolayer assembly needed for bilayer formation, droplet pairs assembled with these two techniques require significantly different incubation periods and exhibit different success rates for bilayer formation. In this study, we combine experimental interfacial tension measurements with molecular dynamics simulations of phospholipids (DPhPC and DOPC) assembled from water and oil origins to understand the differences in kinetics of monolayer formation. With the results from simulations and by using a simplified model to analyze dynamic interfacial tensions, we conclude that, at high lipid concentrations common to DIBs, monolayer formation is simple adsorption controlled for lipid-in technique, whereas it is predominantly adsorption-barrier controlled for the lipid-out technique due to the interaction of interface-bound lipids with lipid structures in the subsurface. The adsorption barrier established in lipid-out technique leads to a prolonged incubation time and lower bilayer formation success rate, proving a good correlation between interfacial tension measurements and bilayer formation. We also clarify that advective flow expedites monolayer formation and improves bilayer formation success rate by disrupting lipid structures, rather than enhancing diffusion, in the subsurface and at the interface for lipid-out technique. Additionally, electrical properties of DIBs formed with varying lipid placement and type are characterized.
C1 [Venkatesan, Guru A.; Sarles, Stephen A.] Univ Tennessee, Dept Mech Aerosp & Biomed Engn, Knoxville, TN 37996 USA.
[Lee, Joonho; Farimani, Amir Barati; Heiranian, Mohammad; Aluru, Narayana R.] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61801 USA.
[Collier, C. Patrick] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Sarles, SA (reprint author), 1512 Middle Dr,414 Dougherty Engn Bldg, Knoxville, TN 37996 USA.
EM ssarles@utk.edu
RI Aluru, N/A-4617-2014; Collier, Charles/C-9206-2016; Barati Farimani,
Amir/F-2356-2013
OI Collier, Charles/0000-0002-8198-793X; Barati Farimani,
Amir/0000-0002-2952-8576
FU Air Force Office of Scientific Research, Basic Research Initiative
[FA9550-12-1-0464]
FX The authors gratefully acknowledge financial support from Air Force
Office of Scientific Research, Basic Research Initiative Grant Number
FA9550-12-1-0464. Pendant drop measurements of interfacial tensions of
lipid monolayers were conducted at the Center for Nanophase Materials
Sciences, which is a DOE Office of Science User Facility.
NR 61
TC 6
Z9 6
U1 5
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD DEC 1
PY 2015
VL 31
IS 47
BP 12883
EP 12893
DI 10.1021/acs.langmuir.5b02293
PG 11
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA CX8CT
UT WOS:000365930900006
PM 26556227
ER
PT J
AU Xia, Y
Li, M
Charubin, K
Liu, Y
Heberle, FA
Katsaras, J
Jing, BX
Zhu, YX
Nieh, MP
AF Xia, Yan
Li, Ming
Charubin, Kamil
Liu, Ying
Heberle, Frederick A.
Katsaras, John
Jing, Benxin
Zhu, Yingxi
Nieh, Mu-Ping
TI Effects of Nanoparticle Morphology and Acyl Chain Length on Spontaneous
Lipid Transfer Rates
SO LANGMUIR
LA English
DT Article
ID FLUORESCENCE CORRELATION SPECTROSCOPY; LARGE UNILAMELLAR VESICLES;
DIFFERENTIAL SCANNING CALORIMETRY; DIBLOCK COPOLYMER MICELLES; DYNAMIC
LIGHT-SCATTERING; FLIP-FLOP; PHOSPHOLIPID MICELLES; MOLECULAR-EXCHANGE;
MODEL MEMBRANES; NMR
AB We report on studies of lipid transfer rates between different morphology nanoparticles and lipids with different length acyl chains. The lipid transfer rate of dimyristoylphosphatidylcholine (di-C-14, DMPC) in discoidal bicelles (0.156 h(-1)) is 2 orders of magnitude greater than that of DMPC vesicles (ULVs) (1.1 X 10(-3) h(-1)). For both bicellar and ULV morphologies, increasing the acyl chain length by two carbons [going from di-C-14 DMPC to di-C16, dipalmitoylphosphatidylcholine (DPPC)] causes lipid transfer rates to decrease by more than 2 orders of magnitude. Results from small angle neutron scattering (SANS), differential scanning calorimetry (DSC), and fluorescence correlation spectroscopy (FCS) are in good agreement. The present studies highlight the importance of lipid dynamic processes taking place in different morphology biomimetic membranes.
C1 [Xia, Yan; Charubin, Kamil; Liu, Ying; Nieh, Mu-Ping] Univ Connecticut, Dept Chem & Biomol Engn, Storrs, CT 06269 USA.
[Li, Ming; Nieh, Mu-Ping] Univ Connecticut, Inst Mat Sci, Polymer Program, Storrs, CT 06269 USA.
[Heberle, Frederick A.; Katsaras, John] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Katsaras, John] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Heberle, Frederick A.; Katsaras, John] Oak Ridge Natl Lab, Joint Inst Neutron Sci, Oak Ridge, TN 37831 USA.
[Jing, Benxin; Zhu, Yingxi] Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA.
[Nieh, Mu-Ping] Univ Connecticut, Dept Biomed Engn, Storrs, CT 06269 USA.
[Zhu, Yingxi] Wayne State Univ, Dept Chem Engn & Mat Sci, Detroit, MI 48202 USA.
RP Nieh, MP (reprint author), Univ Connecticut, Dept Chem & Biomol Engn, Storrs, CT 06269 USA.
EM mu-ping.nieh@uconn.edu
RI Jing, Benxin/I-4944-2014;
OI Jing, Benxin/0000-0002-8400-1937; Katsaras, John/0000-0002-8937-4177
FU NSF-CMMI [1131587]; CBET [1433903]; Scientific User Facilities Division
of the US Department of Energy (DOE), Office of Basic Energy Sciences
(BES) [DE-AC05 00OR2275]; Scientific User Facilities Division of the DOE
Office of Basic Energy Sciences (BES); US Department of Energy, Office
of Basic Energy Science, Division of Materials Science and Engineering
[DE-FG02-07ER46390]
FX The authors from UCONN would like to acknowledge the financial support
from NSF-CMMI 1131587 and CBET 1433903. This work acknowledges
additional support from the Scientific User Facilities Division of the
US Department of Energy (DOE), Office of Basic Energy Sciences (BES),
for use of the EQ-SANS instrument at the ORNL Spallation Neutron Source
(SNS), which is managed by UT-Battelle, LLC, under Contract DE-AC05
00OR2275. J.K. is supported through the Scientific User Facilities
Division of the DOE Office of Basic Energy Sciences (BES). The authors
also wish to acknowledge the support received from Drs. C. Gao and W.T.
Heller while conducting their experiments at the EQ-SANS facility. B.J.
and Y.Z. also acknowledge the financial support from the US Department
of Energy, Office of Basic Energy Science, Division of Materials Science
and Engineering (DE-FG02-07ER46390).
NR 60
TC 1
Z9 1
U1 9
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD DEC 1
PY 2015
VL 31
IS 47
BP 12920
EP 12928
DI 10.1021/acs.langmuir.5b03291
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA CX8CT
UT WOS:000365930900010
PM 26540211
ER
PT J
AU Amin, DN
Ahuja, D
Yaswen, P
Moasser, MM
AF Amin, Dhara N.
Ahuja, Deepika
Yaswen, Paul
Moasser, Mark M.
TI A TORC2-Akt Feed-Forward Topology Underlies HER3 Resiliency in
HER2-Amplified Cancers
SO MOLECULAR CANCER THERAPEUTICS
LA English
DT Article
ID METASTATIC BREAST-CANCER; TYROSINE KINASE INHIBITOR; MAMMARY
EPITHELIAL-CELLS; EPIDERMAL-GROWTH-FACTOR; COMPLEX 2 MTORC2;
POSITIVE-FEEDBACK; PROTEIN-KINASE; PHASE-II; LAPATINIB MONOTHERAPY;
NEGATIVE FEEDBACK
AB The requisite role of HER3 in HER2-amplified cancers is beyond what would be expected as a dimerization partner or effector substrate and it exhibits a substantial degree of resiliency that mitigates the effects of HER2-inhibitor therapies. To better understand the roots of this resiliency, we conducted an in-depth chemical-genetic interrogation of the signaling network downstream of HER3. A unique attribute of these tumors is the deregulation of TORC2. The upstream signals that ordinarily maintain TORC2 signaling are lost in these tumors, and instead TORC2 is driven by Akt. We find that in these cancers HER3 functions as a buffering arm of an Akt-TORC2 feed-forward loop that functions as a self-perpetuating module. This network topology alters the role of HER3 from a conditionally engaged ligand-driven upstream physiologic signaling input to an essential component of a concentric signaling throughput highly competent at preservation of homeostasis. The competence of this signaling topology is evident in its response to perturbation at any of its nodes. Thus, a critical pathophysiologic event in the evolution of HER2-amplified cancers is the loss of the input signals that normally drive TORC2 signaling, repositioning it under Akt dependency, and fundamentally altering the role of HER3. This reprogramming of the downstream network topology is a key aspect in the pathogenesis of HER2-amplified cancers and constitutes a formidable barrier in the targeted therapy of these cancers. (C)2015 AACR.
C1 [Amin, Dhara N.; Ahuja, Deepika; Moasser, Mark M.] Univ Calif San Francisco, Helen Diller Family Comprehens Canc Ctr, Dept Med, San Francisco, CA 94143 USA.
[Yaswen, Paul] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Moasser, MM (reprint author), Univ Calif San Francisco, Helen Diller Family Comprehens Canc Ctr, Box 1387, San Francisco, CA 94143 USA.
EM mark.moasser@ucsf.edu
FU National Institutes of Health [CA 122216, CA 112970]; California Breast
Cancer Research Program [18IB-0030]
FX M.M. Moasser and this project were funded by the National Institutes of
Health (CA 122216 and CA 112970), and the California Breast Cancer
Research Program (18IB-0030).
NR 61
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 1535-7163
EI 1538-8514
J9 MOL CANCER THER
JI Mol. Cancer Ther.
PD DEC
PY 2015
VL 14
IS 12
BP 2805
EP 2817
DI 10.1158/1535-7163.MCT-15-0403
PG 13
WC Oncology
SC Oncology
GA CX9VZ
UT WOS:000366055100014
PM 26438156
ER
PT J
AU Pi, M
Kapoor, K
Wu, YP
Ye, RS
Senogles, SE
Nishimoto, SK
Hwang, DJ
Miller, DD
Narayanan, R
Smith, JC
Baudry, J
Quarles, LD
AF Pi, Min
Kapoor, Karan
Wu, Yunpeng
Ye, Ruisong
Senogles, Susan E.
Nishimoto, Satoru K.
Hwang, Dong-Jin
Miller, Duane D.
Narayanan, Ramesh
Smith, Jeremy C.
Baudry, Jerome
Quarles, L. Darryl
TI Structural and Functional Evidence for Testosterone Activation of GPRC6A
in Peripheral Tissues
SO MOLECULAR ENDOCRINOLOGY
LA English
DT Article
ID ANDROGEN RECEPTOR MODULATORS; PROTEIN-COUPLED RECEPTOR; PROSTATE-CANCER;
IN-VIVO; SIGNALING PATHWAYS; METABOLIC SYNDROME; CELL-LINES; NULL MICE;
B-RING; OSTEOCALCIN
AB G protein-coupled receptor (GPCR) family C group 6 member A (GPRC6A) is a multiligand GPCR that is activated by cations, L-amino acids, and osteocalcin. GPRC6A plays an important role in the regulation of testosterone (T) production and energy metabolism in mice. T has rapid, transcription-independent (nongenomic) effects that are mediated by a putative GPCR. We previously found that T can activate GPRC6A in vitro, but the possibility that T is a ligand for GPRC6A remains controversial. Here, we demonstrate direct T binding to GPRC6A and construct computational structural models of GPRC6A that are used to identify potential binding poses of T. Mutations of the predicted binding site residues were experimentally found to block T activation of GPRC6A, in agreement with the modeling. Using Gpr6ca(-/-) mice, we confirmed that loss of GPRC6A resulted in loss of T rapid signaling responses and elucidated several biological functions regulated by GPRC6A-dependent T rapid signaling, including T stimulation of insulin secretion in pancreatic islets and enzyme expression involved in the biosynthesis of T in Leydig cells. Finally, we identified a stereo-specific effect of an R-isomer of a selective androgen receptor modulator that is predicted to bind to and shown to activate GPRC6A but not androgen receptor. Together, our data show that GPRC6A directly mediates the rapid signaling response to T and uncovers previously unrecognized endocrine networks.
C1 [Pi, Min; Wu, Yunpeng; Ye, Ruisong; Narayanan, Ramesh; Quarles, L. Darryl] Univ Tennessee, Hlth Sci Ctr, Dept Med, Coll Pharm, Memphis, TN 38163 USA.
[Senogles, Susan E.; Nishimoto, Satoru K.] Univ Tennessee, Hlth Sci Ctr, Dept Microbiol Immunol & Biochem, Coll Pharm, Memphis, TN 38163 USA.
[Hwang, Dong-Jin; Miller, Duane D.] Univ Tennessee, Hlth Sci Ctr, Dept Pharmaceut Sci, Coll Pharm, Memphis, TN 38163 USA.
[Kapoor, Karan; Smith, Jeremy C.; Baudry, Jerome] Univ Tennessee, Oak Ridge Natl Lab, Ctr Biophys Mol, Oak Ridge, TN 37830 USA.
[Smith, Jeremy C.; Baudry, Jerome] Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN 37996 USA.
RP Pi, M (reprint author), Univ Tennessee, Hlth Sci Ctr, Dept Med, 19 South Manassas St, Memphis, TN 38163 USA.
EM mpi@uthsc.edu; dquarles@uthsc.edu
RI smith, jeremy/B-7287-2012
OI smith, jeremy/0000-0002-2978-3227
FU National Institutes of Health [R01-AR37308]; Americans Diabetes
Association [1-13-BS-149-BR]
FX This work was supported by National Institutes of Health Grant
R01-AR37308 and Americans Diabetes Association Grant 1-13-BS-149-BR.
NR 67
TC 6
Z9 6
U1 0
U2 3
PU ENDOCRINE SOC
PI WASHINGTON
PA 2055 L ST NW, SUITE 600, WASHINGTON, DC 20036 USA
SN 0888-8809
J9 MOL ENDOCRINOL
JI Mol. Endocrinol.
PD DEC
PY 2015
VL 29
IS 12
BP 1759
EP 1773
DI 10.1210/me.2015-1161
PG 15
WC Endocrinology & Metabolism
SC Endocrinology & Metabolism
GA CY6IC
UT WOS:000366511400009
PM 26440882
ER
PT J
AU Alexandrov, LB
Jones, PH
Wedge, DC
Sale, JE
Campbell, PJ
Nik-Zainal, S
Stratton, MR
AF Alexandrov, Ludmil B.
Jones, Philip H.
Wedge, David C.
Sale, Julian E.
Campbell, Peter J.
Nik-Zainal, Serena
Stratton, Michael R.
TI Clock-like mutational processes in human somatic cells
SO NATURE GENETICS
LA English
DT Article
ID BREAST-CANCER; LEAST-SQUARES; SIGNATURES; GENOME; MECHANISMS; EVOLUTION;
REVEALS; ORIGIN; AGE
AB During the course of a lifetime, somatic cells acquire mutations. Different mutational processes may contribute to the mutations accumulated in a cell, with each imprinting a mutational signature on the cell's genome. Some processes generate mutations throughout life at a constant rate in all individuals, and the number of mutations in a cell attributable to these processes will be proportional to the chronological age of the person. Using mutations from 10,250 cancer genomes across 36 cancer types, we investigated clock-like mutational processes that have been operating in normal human cells. Two mutational signatures show clock-like properties. Both exhibit different mutation rates in different tissues. However, their mutation rates are not correlated, indicating that the underlying processes are subject to different biological influences. For one signature, the rate of cell division may influence its mutation rate. This study provides the first survey of clock-like mutational processes operating in human somatic cells.
C1 [Alexandrov, Ludmil B.; Jones, Philip H.; Wedge, David C.; Campbell, Peter J.; Nik-Zainal, Serena; Stratton, Michael R.] Wellcome Trust Sanger Inst, Canc Genome Project, Hinxton, England.
[Alexandrov, Ludmil B.] Los Alamos Natl Lab, Theoret Biol & Biophys T6, Los Alamos, NM USA.
[Alexandrov, Ludmil B.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Jones, Philip H.] Univ Cambridge, Hutchison MRC Res Ctr, Canc Unit, MRC, Cambridge, England.
[Sale, Julian E.] MRC, Mol Biol Lab, Cambridge CB2 2QH, England.
[Campbell, Peter J.] Univ Cambridge, Dept Haematol, Cambridge, England.
[Nik-Zainal, Serena] Addenbrookes Hosp Natl Hlth Serv NHS Trust, Dept Med Genet, Cambridge, England.
RP Alexandrov, LB (reprint author), Wellcome Trust Sanger Inst, Canc Genome Project, Hinxton, England.
EM lba@lanl.gov; mrs@sanger.ac.uk
OI Wedge, David/0000-0002-7572-3196; Alexandrov,
Ludmil/0000-0003-3596-4515; Jones, Philip H/0000-0002-5904-795X
FU Wellcome Trust [098051, C609/A17257]; Wellcome Trust Intermediate
Fellowship [WT100183MA]; Wellcome Trust Senior Clinical Research
Fellowship [WT088340MA]; MRC grant [MC_U105178808]; J. Robert
Oppenheimer Fellowship at Los Alamos National Laboratory; US Department
of Energy National Nuclear Security Administration [DE-AC52-06NA25396];
National Nuclear Security Administration of the US Department of Energy
FX We would like to thank M.E. Hurles and R. Durbin for early discussions
about the analyses performed. We would like to thank The Cancer Genome
Atlas (TCGA), the International Cancer Genome Consortium (ICGC) and the
authors of all previous studies cited in Supplementary Data Set 1 for
providing free access to their somatic mutational data. This work was
supported by the Wellcome Trust (grant 098051). S.N.-Z. is a
Wellcome-Beit Prize Fellow and is supported through a Wellcome Trust
Intermediate Fellowship (grant WT100183MA). P.J.C. is personally funded
through a Wellcome Trust Senior Clinical Research Fellowship (grant
WT088340MA). J.E.S. is supported by an MRC grant to the Laboratory of
Molecular Biology (MC_U105178808). L.B.A. is supported through a J.
Robert Oppenheimer Fellowship at Los Alamos National Laboratory. P.H.J.
is supported by the Wellcome Trust, an MRC Grant-in-Aid and Cancer
Research UK (programme grant C609/A17257). This research used resources
provided by the Los Alamos National Laboratory Institutional Computing
Program, which is supported by the US Department of Energy National
Nuclear Security Administration under contract DE-AC52-06NA25396.
Research performed at Los Alamos National Laboratory was carried out
under the auspices of the National Nuclear Security Administration of
the US Department of Energy.
NR 27
TC 38
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U1 1
U2 15
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1061-4036
EI 1546-1718
J9 NAT GENET
JI Nature Genet.
PD DEC
PY 2015
VL 47
IS 12
BP 1402
EP +
DI 10.1038/ng.3441
PG 9
WC Genetics & Heredity
SC Genetics & Heredity
GA CX6LT
UT WOS:000365813200010
PM 26551669
ER
PT J
AU Ming, R
VanBuren, R
Wai, CM
Tang, HB
Schatz, MC
Bowers, JE
Lyons, E
Wang, ML
Chen, J
Biggers, E
Zhang, JS
Huang, LX
Zhang, LM
Miao, WJ
Zhang, J
Ye, ZY
Miao, CY
Lin, ZC
Wang, H
Zhou, HY
Yim, WC
Priest, HD
Zheng, CF
Woodhouse, M
Edger, PP
Guyot, R
Guo, HB
Guo, H
Zheng, GY
Singh, R
Sharma, A
Min, XJ
Zheng, Y
Lee, H
Gurtowski, J
Sedlazeck, FJ
Harkess, A
McKain, MR
Liao, ZY
Fang, JP
Liu, J
Zhang, XD
Zhang, Q
Hu, WC
Qin, Y
Wang, K
Chen, LY
Shirley, N
Lin, YR
Liu, LY
Hernandez, AG
Wright, CL
Bulone, V
Tuskan, GA
Heath, K
Zee, F
Moore, PH
Sunkar, R
Leebens-Mack, JH
Mockler, T
Bennetzen, JL
Freeling, M
Sankoff, D
Paterson, AH
Zhu, XG
Yang, XH
Smith, JAC
Cushman, JC
Paull, RE
Yu, QY
AF Ming, Ray
VanBuren, Robert
Wai, Ching Man
Tang, Haibao
Schatz, Michael C.
Bowers, John E.
Lyons, Eric
Wang, Ming-Li
Chen, Jung
Biggers, Eric
Zhang, Jisen
Huang, Lixian
Zhang, Lingmao
Miao, Wenjing
Zhang, Jian
Ye, Zhangyao
Miao, Chenyong
Lin, Zhicong
Wang, Hao
Zhou, Hongye
Yim, Won C.
Priest, Henry D.
Zheng, Chunfang
Woodhouse, Margaret
Edger, Patrick P.
Guyot, Romain
Guo, Hao-Bo
Guo, Hong
Zheng, Guangyong
Singh, Ratnesh
Sharma, Anupma
Min, Xiangjia
Zheng, Yun
Lee, Hayan
Gurtowski, James
Sedlazeck, Fritz J.
Harkess, Alex
McKain, Michael R.
Liao, Zhenyang
Fang, Jingping
Liu, Juan
Zhang, Xiaodan
Zhang, Qing
Hu, Weichang
Qin, Yuan
Wang, Kai
Chen, Li-Yu
Shirley, Neil
Lin, Yann-Rong
Liu, Li-Yu
Hernandez, Alvaro G.
Wright, Chris L.
Bulone, Vincent
Tuskan, Gerald A.
Heath, Katy
Zee, Francis
Moore, Paul H.
Sunkar, Ramanjulu
Leebens-Mack, James H.
Mockler, Todd
Bennetzen, Jeffrey L.
Freeling, Michael
Sankoff, David
Paterson, Andrew H.
Zhu, Xinguang
Yang, Xiaohan
Smith, J. Andrew C.
Cushman, John C.
Paull, Robert E.
Yu, Qingyi
TI The pineapple genome and the evolution of CAM photosynthesis
SO NATURE GENETICS
LA English
DT Article
ID CRASSULACEAN ACID METABOLISM; LTR RETROTRANSPOSONS; EXPRESSION ANALYSIS;
ANANAS-COMOSUS; GENE; SEQUENCE; PLANTS; ARABIDOPSIS; IDENTIFICATION;
DIVERGENCE
AB Pineapple (Ananas comosus (L.) Merr.) is the most economically valuable crop possessing crassulacean acid metabolism (CAM), a photosynthetic carbon assimilation pathway with high water-use efficiency, and the second most important tropical fruit. We sequenced the genomes of pineapple varieties F153 and MD2 and a wild pineapple relative, Ananas bracteatus accession CB5. The pineapple genome has one fewer ancient whole-genome duplication event than sequenced grass genomes and a conserved karyotype with seven chromosomes from before the. duplication event. The pineapple lineage has transitioned from C-3 photosynthesis to CAM, with CAM-related genes exhibiting a diel expression pattern in photosynthetic tissues. CAM pathway genes were enriched with cis-regulatory elements associated with the regulation of circadian clock genes, providing the first cis-regulatory link between CAM and circadian clock regulation. Pineapple CAM photosynthesis evolved by the reconfiguration of pathways in C-3 plants, through the regulatory neofunctionalization of preexisting genes and not through the acquisition of neofunctionalized genes via whole-genome or tandem gene duplication.
C1 [Ming, Ray; VanBuren, Robert; Wai, Ching Man; Tang, Haibao; Zhang, Jisen; Huang, Lixian; Zhang, Lingmao; Miao, Wenjing; Zhang, Jian; Ye, Zhangyao; Miao, Chenyong; Lin, Zhicong; Liao, Zhenyang; Fang, Jingping; Liu, Juan; Zhang, Xiaodan; Zhang, Qing; Hu, Weichang; Qin, Yuan; Wang, Kai; Chen, Li-Yu] Fujian Agr & Forestry Univ, Fujian Agr & Forestry Univ & Univ Illinois Urbana, Fuzhou, Peoples R China.
[Ming, Ray; VanBuren, Robert; Wai, Ching Man; Tang, Haibao; Zhang, Jisen; Huang, Lixian; Zhang, Lingmao; Miao, Wenjing; Zhang, Jian; Ye, Zhangyao; Miao, Chenyong; Lin, Zhicong; Liao, Zhenyang; Fang, Jingping; Liu, Juan; Zhang, Xiaodan; Zhang, Qing; Hu, Weichang; Qin, Yuan; Wang, Kai; Chen, Li-Yu] Fujian Agr & Forestry Univ, Fujian Taiwan Joint Ctr Ecol Control Crop Pests, Fuzhou, Peoples R China.
[Ming, Ray; VanBuren, Robert; Wai, Ching Man; Heath, Katy] Univ Illinois, Dept Plant Biol, Urbana, IL USA.
[VanBuren, Robert; Priest, Henry D.; McKain, Michael R.; Mockler, Todd] Donald Danforth Plant Sci Ctr, St Louis, MO USA.
[Tang, Haibao; Lyons, Eric] Univ Arizona, iPlant Collaborat, Tucson, AZ USA.
[Schatz, Michael C.; Biggers, Eric; Lee, Hayan; Gurtowski, James; Sedlazeck, Fritz J.] Cold Spring Harbor Lab, Cold Spring Harbor, NY 11724 USA.
[Bowers, John E.; Wang, Hao; Zhou, Hongye; Harkess, Alex; Leebens-Mack, James H.; Bennetzen, Jeffrey L.] Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA.
[Wang, Ming-Li; Moore, Paul H.] Hawaii Agr Res Ctr, Kunia, HI USA.
[Chen, Jung; Paull, Robert E.] Univ Hawaii, Dept Trop Plant & Soil Sci, Honolulu, HI 96822 USA.
[Yim, Won C.; Cushman, John C.] Univ Nevada, Dept Biochem & Mol Biol, Reno, NV 89557 USA.
[Zheng, Chunfang; Sankoff, David] Univ Ottawa, Dept Math & Stat, Ottawa, ON, Canada.
[Woodhouse, Margaret; Edger, Patrick P.; Freeling, Michael] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA.
[Guyot, Romain] IRD, Divers Adaptat & Dev Plantes, Montpellier, France.
[Guo, Hao-Bo; Guo, Hong] Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN USA.
[Zheng, Guangyong; Zhu, Xinguang] Chinese Acad Sci, Shanghai Inst Biol Sci, Max Planck Gesell Partner Inst Computat Biol, Key Lab Computat Biol, Shanghai, Peoples R China.
[Singh, Ratnesh; Sharma, Anupma; Yu, Qingyi] Texas A&M Univ Syst, Dept Plant Pathol & Microbiol, Texas A&M AgriLife Res, Dallas, TX USA.
[Min, Xiangjia] Youngstown State Univ, Dept Biol Sci, Youngstown, OH 44555 USA.
[Zheng, Yun] Kunming Univ Sci & Technol, Fac Life Sci & Technol, Kunming, Peoples R China.
[Shirley, Neil; Bulone, Vincent] Univ Adelaide, Sch Agr Food & Wine, Australian Res Council ARC Ctr Excellence Plant C, Adelaide, SA, Australia.
[Lin, Yann-Rong; Liu, Li-Yu] Natl Taiwan Univ, Dept Agron, Taipei, Taiwan.
[Hernandez, Alvaro G.; Wright, Chris L.] Univ Illinois, WM Keck Ctr, Urbana, IL USA.
[Tuskan, Gerald A.; Yang, Xiaohan] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN USA.
[Zee, Francis] USDA ARS, Pacific Basin Agr Res Ctr, Hilo, HI USA.
[Sunkar, Ramanjulu] Oklahoma State Univ, Dept Biochem & Mol Biol, Noble Res Ctr, Stillwater, OK 74078 USA.
[Paterson, Andrew H.] Univ Georgia, Plant Genome Mapping Lab, Athens, GA 30602 USA.
[Smith, J. Andrew C.] Univ Oxford, Dept Plant Sci, Oxford, England.
RP Ming, R (reprint author), Fujian Agr & Forestry Univ, Fujian Agr & Forestry Univ & Univ Illinois Urbana, Fuzhou, Peoples R China.
EM rming@life.uiuc.edu; qyu@ag.tamu.edu
RI Bowers, John/B-9245-2009; Mockler, Todd/L-2609-2013; guyot,
romain/M-1118-2015; Guo, Hao-Bo/B-7486-2009; Yim, Won Cheol/K-9100-2016;
Tuskan, Gerald/A-6225-2011; Zheng, Yun/I-7011-2012; Bulone,
Vincent/D-7469-2013; Yang, Xiaohan/A-6975-2011;
OI Sedlazeck, Fritz/0000-0001-6040-2691; Miao,
Chenyong/0000-0002-0904-3707; Singh, Ratnesh/0000-0001-5647-3390; Min,
Xiangjia/0000-0001-7978-0596; Mockler, Todd/0000-0002-0462-5775; guyot,
romain/0000-0002-7016-7485; Guo, Hao-Bo/0000-0003-1321-1758; Yim, Won
Cheol/0000-0002-7489-0435; Tuskan, Gerald/0000-0003-0106-1289; Zheng,
Yun/0000-0003-4292-9806; Yang, Xiaohan/0000-0001-5207-4210; Lin,
Yann-rong/0000-0001-6833-8276; Liu, Li-yu/0000-0001-6997-8101
FU Fujian Agriculture and Forestry University; USDA T-START grant through
the University of Hawaii; University of Illinois at Urbana-Champaign;
Fujian provincial government; US National Science Foundation (NSF) Plant
Genome Program [0922545]; NSF [DBI-1401572, IOS-1444567]; US National
Institutes of Health [R01-HG006677]; US NSF [DBI-1350041, DBI-1265383];
US Department of Energy, Office of Science, Genomic Science Program
[DE-SC0008834]
FX We thank R. Kai and C. Mayo Riley for maintaining the pineapple plants
and the collection of leaf tissues; M. Conway at Dole Plantation for
assistance in time-course leaf sample collection; G. Sanewski for
providing the MD2 pedigree; and M. Cushman for providing clarifying
comments on the manuscript. This project is supported by funding from
the Fujian Agriculture and Forestry University to R. M.; a USDA T-START
grant through the University of Hawaii to Q.Y., R.M., P.H.M. and R.E.P.;
and funding from the University of Illinois at Urbana-Champaign to R.M.
H.T. is supported by the 100 Talent Plan award from the Fujian
provincial government. Analyses of the pineapple genome are supported by
the following funding sources: US National Science Foundation (NSF)
Plant Genome Program grant 0922545 to R.M., P.H.M. and Q.Y. and NSF
grant DBI-1401572 to R.V.; NSF grant IOS-1444567 to J.H.L.-M.; and US
National Institutes of Health award R01-HG006677 and US NSF awards
DBI-1350041 and DBI-1265383 to M.C.S. W.C.Y., H.-B.G., H.G., G.A.T.,
X.Y. and J.C.C. acknowledge support from the US Department of Energy,
Office of Science, Genomic Science Program, under award DE-SC0008834.
NR 66
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U1 19
U2 92
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1061-4036
EI 1546-1718
J9 NAT GENET
JI Nature Genet.
PD DEC
PY 2015
VL 47
IS 12
BP 1435
EP +
DI 10.1038/ng.3435
PG 11
WC Genetics & Heredity
SC Genetics & Heredity
GA CX6LT
UT WOS:000365813200015
PM 26523774
ER
PT J
AU Urban, JJ
AF Urban, Jeffrey J.
TI Prospects for thermoelectricity in quantum dot hybrid arrays
SO NATURE NANOTECHNOLOGY
LA English
DT Article
ID THERMAL-CONDUCTIVITY; MOLECULAR JUNCTIONS; NANOCRYSTAL SOLIDS;
TRANSPORT; SUPERLATTICES; THERMOPOWER; ENERGY; ENHANCEMENT; POWER; HEAT
C1 [Urban, Jeffrey J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Mol Foundry, Berkeley, CA 94720 USA.
RP Urban, JJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Mol Foundry, 1 Cyclotron Rd,67R4110, Berkeley, CA 94720 USA.
EM jjurban@lbl.gov
NR 47
TC 4
Z9 4
U1 15
U2 55
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1748-3387
EI 1748-3395
J9 NAT NANOTECHNOL
JI Nat. Nanotechnol.
PD DEC
PY 2015
VL 10
IS 12
BP 997
EP U114
DI 10.1038/nnano.2015.289
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA CX9KE
UT WOS:000366023700024
PM 26632279
ER
PT J
AU Davids, PS
Jarecki, RL
Starbuck, A
Burckel, DB
Kadlec, EA
Ribaudo, T
Shaner, EA
Peters, DW
AF Davids, Paul S.
Jarecki, Robert L.
Starbuck, Andrew
Burckel, D. Bruce
Kadlec, Emil A.
Ribaudo, Troy
Shaner, Eric A.
Peters, David W.
TI Infrared rectification in a nanoantenna-coupled
metal-oxide-semiconductor tunnel diode
SO NATURE NANOTECHNOLOGY
LA English
DT Article
ID DENSITY-OF-STATES; EFFICIENCY; FREQUENCIES; SURFACES; DETECTOR;
RECTENNA; TIME
AB Direct rectification of electromagnetic radiation is a well-established method for wireless power conversion in the microwave region of the spectrum, for which conversion efficiencies in excess of 84% have been demonstrated(1-6). Scaling to the infrared or optical part of the spectrum requires ultrafast rectification(7-10) that can only be obtained by direct tunnelling(11,12). Many research groups have looked to plasmonics to overcome antenna-scaling limits and to increase the confinement(10,13-21). Recently, surface plasmons on heavily doped Si surfaces were investigated as a way of extending surface-mode confinement to the thermal infrared region(22). Here we combine a nanostructured metallic surface with a heavily doped Si infrared-reflective ground plane designed to confine infrared radiation in an active electronic direct-conversion device. The interplay of strong infrared photon-phonon coupling and electromagnetic confinement in nanoscale devices is demonstrated to have a large impact on ultrafast electronic tunnelling in metal-oxidesemiconductor (MOS) structures. Infrared dispersion of SiO2 near a longitudinal optical (LO) phonon mode gives large transverse-field confinement in a nanometre-scale oxide-tunnel gap as the wavelength-dependent permittivity changes from 1 to 0, which leads to enhanced electromagnetic fields at material interfaces and a rectified displacement current that provides a direct conversion of infrared radiation into electric current. The spectral and electrical signatures of the nanoantenna-coupled tunnel diodes are examined under broadband black-body and quantum-cascade laser (QCL) illumination. In the region near the LO phonon resonance, we obtained a measured photoresponsivity of 2.7 mAW(-1) cm(-2) at -0.1 V.
C1 [Davids, Paul S.; Jarecki, Robert L.; Starbuck, Andrew; Burckel, D. Bruce; Kadlec, Emil A.; Ribaudo, Troy; Shaner, Eric A.; Peters, David W.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Davids, PS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM pdavids@sandia.gov
FU Sandia's Laboratory Directed Research and Development program; US
Department of Defense; US Department of Energy's National Nuclear
Security Administration [DE-AC04-94AL85000]
FX P.S.D. thanks P. Rakich from Yale University and W. Burckel and R.
Sanchez from Sandia for many useful and enlightening discussions.
Funding for this work was provided by Sandia's Laboratory Directed
Research and Development program and the US Department of Defense.
Sandia is a multiprogramme laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the US Department of Energy's National
Nuclear Security Administration under contract DE-AC04-94AL85000.
NR 30
TC 3
Z9 3
U1 15
U2 51
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1748-3387
EI 1748-3395
J9 NAT NANOTECHNOL
JI Nat. Nanotechnol.
PD DEC
PY 2015
VL 10
IS 12
BP 1033
EP 1038
DI 10.1038/NNANO.2015.216
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA CX9KE
UT WOS:000366023700010
PM 26414194
ER
PT J
AU Riley, JM
Meevasana, W
Bawden, L
Asakawa, M
Takayama, T
Eknapakul, T
Kim, TK
Hoesch, M
Mo, SK
Takagi, H
Sasagawa, T
Bahramy, MS
King, PDC
AF Riley, J. M.
Meevasana, W.
Bawden, L.
Asakawa, M.
Takayama, T.
Eknapakul, T.
Kim, T. K.
Hoesch, M.
Mo, S-K.
Takagi, H.
Sasagawa, T.
Bahramy, M. S.
King, P. D. C.
TI Negative electronic compressibility and tunable spin splitting in WSe2
SO NATURE NANOTECHNOLOGY
LA English
DT Article
ID TRANSITION-METAL DICHALCOGENIDES; 2-DIMENSIONAL ELECTRON; QUANTUM
CAPACITANCE; BAND; SEMICONDUCTOR; RENORMALIZATION; INSULATOR; FIELD;
MOS2; GAP
AB Tunable bandgaps(1), extraordinarily large exciton-binding energies(2,3), strong light-matter coupling(4) and a locking of the electron spin with layer and valley pseudospins(5-8) have established transition-metal dichalcogenides (TMDs) as a unique class of two-dimensional (2D) semiconductors with wide-ranging practical applications(9,10). Using angle-resolved photoemission (ARPES), we show here that doping electrons at the surface of the prototypical strong spin-orbit TMD WSe2, akin to applying a gate voltage in a transistor-type device, induces a counterintuitive lowering of the surface chemical potential concomitant with the formation of a multivalley 2D electron gas (2DEG). These measurements provide a direct spectroscopic signature of negative electronic compressibility (NEC), a result of electron-electron interactions, which we find persists to carrier densities approximately three orders of magnitude higher than in typical semiconductor 2DEGs that exhibit this effect(11,12). An accompanying tunable spin splitting of the valence bands further reveals a complex interplay between single-particle band-structure evolution and many-body interactions in electrostatically doped TMDs. Understanding and exploiting this will open up new opportunities for advanced electronic and quantum-logic devices.
C1 [Riley, J. M.; Bawden, L.; King, P. D. C.] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland.
[Riley, J. M.; Kim, T. K.; Hoesch, M.] Diamond Light Source, Didcot OX11 0DE, Oxon, England.
[Meevasana, W.; Eknapakul, T.] Suranaree Univ Technol, Sch Phys, Nakhon Ratchasima 30000, Thailand.
[Meevasana, W.] Suranaree Univ Technol, NANOTEC SUT Ctr Excellence Adv Funct Nanomat, Nakhon Ratchasima 30000, Thailand.
[Asakawa, M.; Sasagawa, T.] Tokyo Inst Technol, Mat & Struct Lab, Tokyo, Kanagawa 2268503, Japan.
[Takayama, T.; Takagi, H.] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan.
[Takayama, T.; Takagi, H.] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany.
[Mo, S-K.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Bahramy, M. S.] Univ Tokyo, Quantum Phase Elect Ctr, Tokyo 1138656, Japan.
[Bahramy, M. S.] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan.
[Bahramy, M. S.] RIKEN Ctr Emergent Matter Sci CEMS, Wako, Saitama 3510198, Japan.
RP King, PDC (reprint author), Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland.
EM philip.king@st-andrews.ac.uk
RI Mo, Sung-Kwan/F-3489-2013; King, Philip/D-3809-2014; Sasagawa,
Takao/E-6666-2014; Takagi, Hidenori/B-2935-2010; Bahramy,
Mohammad/B-2865-2013;
OI Mo, Sung-Kwan/0000-0003-0711-8514; King, Philip/0000-0002-6523-9034;
Sasagawa, Takao/0000-0003-0149-6696; Bahramy,
Mohammad/0000-0001-9024-6335; Hoesch, Moritz/0000-0002-0114-2110
FU Engineering and Physical Sciences Research Council, UK [EP/I031014/1,
EP/M023427/1, EP/L505079/1, EP/G03673X/1]; TRF-SUT Grant [RSA5680052];
NANOTEC, Thailand, through the Centres of Excellence Network; Royal
Society through a University Research Fellowship; Ministry of Education,
Culture, Sports, Science and Technology (MEXT) of Japan [24224009];
Office of Science, Office of Basic Energy Sciences, US Department of
Energy [DE-AC02-05CH11231]
FX This work was supported by the Engineering and Physical Sciences
Research Council, UK (Grant Nos EP/I031014/1, EP/M023427/1, EP/L505079/1
and EP/G03673X/1), TRF-SUT Grant RSA5680052 and NANOTEC, Thailand,
through the Centres of Excellence Network. P.D.C.K. acknowledges support
from the Royal Society through a University Research Fellowship. M.S.B.
was supported by a Grant-in-Aid for Scientific Research (S) (No.
24224009) from the Ministry of Education, Culture, Sports, Science and
Technology (MEXT) of Japan. The Advanced Light Source is supported by
the Director, Office of Science, Office of Basic Energy Sciences, US
Department of Energy, under Contract No. DE-AC02-05CH11231. We thank the
Diamond Light Source for access to beamline I05 (proposal numbers SI9500
and SI11383) that contributed to the results presented here.
NR 33
TC 12
Z9 12
U1 18
U2 125
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1748-3387
EI 1748-3395
J9 NAT NANOTECHNOL
JI Nat. Nanotechnol.
PD DEC
PY 2015
VL 10
IS 12
BP 1043
EP +
DI 10.1038/NNANO.2015.217
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA CX9KE
UT WOS:000366023700012
PM 26389661
ER
PT J
AU Jain, T
Rasera, BC
Guerrero, RJS
Boutilier, MSH
O'Hern, SC
Idrobo, JC
Karnik, R
AF Jain, Tarun
Rasera, Benjamin C.
Guerrero, Ricardo Jose S.
Boutilier, Michael S. H.
O'Hern, Sean C.
Idrobo, Juan-Carlos
Karnik, Rohit
TI Heterogeneous sub-continuum ionic transport in statistically isolated
graphene nanopores
SO NATURE NANOTECHNOLOGY
LA English
DT Article
ID SINGLE-LAYER GRAPHENE; WATER DESALINATION; INTRINSIC DEFECTS; MEMBRANES;
CHANNEL; SELECTIVITY; DNA; PERMEATION; GAS
AB Graphene and other two-dimensional materials offer a new class of ultrathin membranes that can have atomically defined nanopores with diameters approaching those of hydrated ions(1-7). These nanopores have the smallest possible pore volumes of any ion channel, which, due to ionic dehydration(8) and electrokinetic effects9, places them in a novel transport regime and allows membranes to be created that combine selective ionic transport(10) with ultimate permeance(11-13) and could lead to separations(14,15) and sensing(16) applications. However, experimental characterization and understanding of sub-continuum ionic transport in nanopores below 2 nm is limited(17,18). Here we show that isolated sub-2 nm pores in graphene exhibit, in contrast to larger pores, diverse transport behaviours consistent with ion transport over a free-energy barrier arising from ion dehydration and electrostatic interactions. Current-voltage measurements reveal that the conductance of graphene nanopores spans three orders of magnitude(8) and that they display distinct linear, voltage-activated or rectified current-voltage characteristics and different cation-selectivity profiles. In rare cases, rapid, voltage-dependent stochastic switching is observed, consistent with the presence of a dissociable group in the pore vicinity(19). A modified Nernst-Planck model incorporating ion hydration and electrostatic effects quantitatively matches the observed behaviours.
C1 [Jain, Tarun; Rasera, Benjamin C.; Guerrero, Ricardo Jose S.; Boutilier, Michael S. H.; O'Hern, Sean C.; Karnik, Rohit] MIT, Dept Mech Engn, Cambridge, MA 02139 USA.
[Idrobo, Juan-Carlos] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Karnik, R (reprint author), MIT, Dept Mech Engn, Cambridge, MA 02139 USA.
EM karnik@mit.edu
OI Idrobo, Juan Carlos/0000-0001-7483-9034
FU US Department of Energy, Office of Basic Energy Sciences [DE-SC0008059];
National Science Foundation at the Massachusetts Institute of Technology
[DMR-0819762]
FX This work was supported by the US Department of Energy, Office of Basic
Energy Sciences under award no. DE-SC0008059. The research made use of
the Materials Research Science and Engineering Centers Shared
Experimental Facilities supported by the National Science Foundation
under award no. DMR-0819762 at the Massachusetts Institute of
Technology. Scanning transmission electron microscopy was conducted at
Oak Ridge National Laboratory's Center for Nanophase Materials Sciences
(CNMS), which is a US Department of Energy, Office of Science User
Facility.
NR 32
TC 12
Z9 13
U1 13
U2 89
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1748-3387
EI 1748-3395
J9 NAT NANOTECHNOL
JI Nat. Nanotechnol.
PD DEC
PY 2015
VL 10
IS 12
BP 1053
EP +
DI 10.1038/NNANO.2015.222
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA CX9KE
UT WOS:000366023700014
PM 26436566
ER
PT J
AU Xu, FH
Curty, M
Qi, B
Qian, L
Lo, HK
AF Xu, Feihu
Curty, Marcos
Qi, Bing
Qian, Li
Lo, Hoi-Kwong
TI Discrete and continuous variables for measurement-device-independent
quantum cryptography
SO NATURE PHOTONICS
LA English
DT Letter
ID KEY DISTRIBUTION
C1 [Xu, Feihu] MIT, Elect Res Lab, Cambridge, MA 02139 USA.
[Curty, Marcos] Univ Vigo, Dept Signal Theory & Commun, Escuela Ingn Telecomunicac, E-36310 Vigo, Spain.
[Qi, Bing] Oak Ridge Natl Lab, Quantum Informat Sci Grp, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA.
[Qian, Li; Lo, Hoi-Kwong] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada.
RP Xu, FH (reprint author), MIT, Elect Res Lab, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
EM fhxu@mit.edu
RI Qi, Bing/J-5028-2014
OI Qi, Bing/0000-0001-7723-8998
NR 12
TC 6
Z9 6
U1 7
U2 16
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1749-4885
EI 1749-4893
J9 NAT PHOTONICS
JI Nat. Photonics
PD DEC
PY 2015
VL 9
IS 12
BP 772
EP 773
PG 2
WC Optics; Physics, Applied
SC Optics; Physics
GA CY1ES
UT WOS:000366150100002
ER
PT J
AU Bechtold, A
Rauch, D
Li, FX
Simmet, T
Ardelt, PL
Regler, A
Muller, K
Sinitsyn, NA
Finley, JJ
AF Bechtold, Alexander
Rauch, Dominik
Li, Fuxiang
Simmet, Tobias
Ardelt, Per-Lennart
Regler, Armin
Mueller, Kai
Sinitsyn, Nikolai A.
Finley, Jonathan J.
TI Three-stage decoherence dynamics of an electron spin qubit in an
optically active quantum dot
SO NATURE PHYSICS
LA English
DT Article
ID STATE
AB The control of solid-state qubits requires a detailed understanding of the decoherence mechanisms. Despite considerable progress in uncovering the qubit dynamics in strong magnetic fields(1-4), decoherence at very low magnetic fields remains puzzling, and the role of quadrupole coupling of nuclear spins is poorly understood. For spin qubits in semiconductor quantum dots, phenomenological models of decoherence include two basic types of spin relaxation(5-7): fast dephasing due to static but randomly distributed hyperfine fields (similar to 2 ns)(8-11) and a much slower process (>1 mu s) of irreversible monotonic relaxation due either to nuclear spin co-flips or other complex many-body interaction effects(12). Here we show that this is an oversimplification; the spin qubit relaxation is determined by three rather than two distinct stages. The additional stage corresponds to the effect of coherent precession processes that occur in the nuclear spin bath itself, leading to a relatively fast but incomplete non-monotonic relaxation at intermediate timescales (similar to 750 ns).
C1 [Bechtold, Alexander; Rauch, Dominik; Simmet, Tobias; Ardelt, Per-Lennart; Regler, Armin; Mueller, Kai; Finley, Jonathan J.] Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany.
[Li, Fuxiang] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Li, Fuxiang; Sinitsyn, Nikolai A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Regler, Armin; Mueller, Kai] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA.
RP Finley, JJ (reprint author), Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany.
EM jonathan.finley@wsi.tum.de
RI Li, Fuxiang/O-9132-2015
FU Deutsche Forschungs Gemeinschaft [SFB-631]; Nanosystems Initiative
Munich; EU; Alexander von Humboldt Foundation; ARO [W911NF-13-1-0309];
US Department of Energy [DE-AC52-06NA25396]; LDRD program at LANL
FX We are very grateful to L. Cywinski for most useful and enlightening
discussions. Furthermore, we gratefully acknowledge financial support
from the Deutsche Forschungs Gemeinschaft via SFB-631, and the
Nanosystems Initiative Munich, the EU via S3 Nano, and BaCaTeC. K.M.
acknowledges financial support from the Alexander von Humboldt
Foundation and the ARO (Grant W911NF-13-1-0309). Work at LANL was
supported by the US Department of Energy, Contract No.
DE-AC52-06NA25396, and the LDRD program at LANL.
NR 30
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U1 3
U2 24
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
EI 1745-2481
J9 NAT PHYS
JI Nat. Phys.
PD DEC
PY 2015
VL 11
IS 12
BP 1005
EP +
DI 10.1038/NPHYS3470
PG 5
WC Physics, Multidisciplinary
SC Physics
GA CX7QZ
UT WOS:000365898400013
ER
PT J
AU Li, CW
Hong, J
May, AF
Bansal, D
Chi, S
Hong, T
Ehlers, G
Delaire, O
AF Li, C. W.
Hong, J.
May, A. F.
Bansal, D.
Chi, S.
Hong, T.
Ehlers, G.
Delaire, O.
TI Orbitally driven giant phonon anharmonicity in SnSe
SO NATURE PHYSICS
LA English
DT Article
ID HIGH-THERMOELECTRIC PERFORMANCE; TOTAL-ENERGY CALCULATIONS; WAVE
BASIS-SET; THERMAL-CONDUCTIVITY; VIBRATIONAL-MODES; CRYSTALS; METALS;
TRANSITION; SCATTERING
AB Understanding elementary excitations and their couplings in condensed matter systems is critical for developing better energy-conversion devices. In thermoelectric materials, the heat-to-electricity conversion efficiency is directly improved by suppressing the propagation of phonon quasiparticles responsible for macroscopic thermal transport. The current record material for thermoelectric conversion efficiency, SnSe, has an ultralow thermal conductivity, but the mechanism behind the strong phonon scattering remains largely unknown. From inelastic neutron scattering measurements and first-principles simulations, we mapped the four-dimensional phonon dispersion surfaces of SnSe, and found the origin of the ionic-potential anharmonicity responsible for the unique properties of SnSe. We show that the giant phonon scattering arises from an unstable electronic structure, with orbital interactions leading to a ferroelectric-like lattice instability. The present results provide a microscopic picture connecting electronic structure and phonon anharmonicity in SnSe, and offers new insights on how electron-phonon and phonon-phonon interactions may lead to the realization of ultralow thermal conductivity.
C1 [Li, C. W.; Hong, J.; May, A. F.; Bansal, D.; Delaire, O.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Chi, S.; Hong, T.; Ehlers, G.] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
RP Delaire, O (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM delaireoa@ornl.gov
RI Hong, Tao/F-8166-2010; Chi, Songxue/A-6713-2013; Instrument,
CNCS/B-4599-2012; Hong, Jiawang/B-2864-2009; Bansal,
Dipanshu/I-7895-2016; May, Andrew/E-5897-2011; Ehlers, Georg/B-5412-2008
OI Hong, Tao/0000-0002-0161-8588; Chi, Songxue/0000-0002-3851-9153; Hong,
Jiawang/0000-0002-9915-8072; Bansal, Dipanshu/0000-0003-1181-1119; May,
Andrew/0000-0003-0777-8539; Ehlers, Georg/0000-0003-3513-508X
FU S3TEC EFRC, an Energy Frontier Research Center - US Department of
Energy, Office of Science, Basic Energy Sciences [DE-SC0001299]; CAMM;
US Department of Energy, Basic Energy Sciences, Materials Sciences and
Engineering Division. Sample synthesis; US Department of Energy, Office
of Science, Basic Energy Sciences, Materials Sciences and Engineering
Division; Scientific User Facilities Division, Office of Basic Energy
Sciences, US Department of Energy; Office of Science of the US
Department of Energy
FX Neutron scattering measurements and analysis (O.D., C.W.L.) was
supported as part of the S3TEC EFRC, an Energy Frontier Research Center
funded by the US Department of Energy, Office of Science, Basic Energy
Sciences under Award # DE-SC0001299. Computer simulations and analysis
were supported through CAMM (J.H., D.B.), funded by the US Department of
Energy, Basic Energy Sciences, Materials Sciences and Engineering
Division. Sample synthesis (A.F.M.) was supported by the US Department
of Energy, Office of Science, Basic Energy Sciences, Materials Sciences
and Engineering Division. The use of Oak Ridge National Laboratory's
Spallation Neutron Source and High Flux Isotope Reactor was sponsored by
the Scientific User Facilities Division, Office of Basic Energy
Sciences, US Department of Energy. The orientation of single crystals
was characterized using the X-ray Laue camera system at the X-ray lab in
SNS, ORNL (we thank J. K. Keum for his assistance). This research used
resources of the Oak Ridge Leadership Computing Facility (OLCF), which
is supported by the Office of Science of the US Department of Energy.
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U1 45
U2 158
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
EI 1745-2481
J9 NAT PHYS
JI Nat. Phys.
PD DEC
PY 2015
VL 11
IS 12
BP 1063
EP +
DI 10.1038/NPHYS3492
PG 8
WC Physics, Multidisciplinary
SC Physics
GA CX7QZ
UT WOS:000365898400025
ER
PT J
AU Smedley, D
Jacobsen, JOB
Jager, M
Kohler, S
Holtgrewe, M
Schubach, M
Siragusa, E
Zemojtel, T
Buske, OJ
Washington, NL
Bone, WP
Haendel, MA
Robinson, PN
AF Smedley, Damian
Jacobsen, Julius O. B.
Jaeger, Marten
Koehler, Sebastian
Holtgrewe, Manuel
Schubach, Max
Siragusa, Enrico
Zemojtel, Tomasz
Buske, Orion J.
Washington, Nicole L.
Bone, William P.
Haendel, Melissa A.
Robinson, Peter N.
TI Next-generation diagnostics and disease-gene discovery with the Exomiser
SO NATURE PROTOCOLS
LA English
DT Article
ID HUMAN PHENOTYPE ONTOLOGY; MENDELIAN DISEASES; SEQUENCE DATA; SEMANTIC
SIMILARITY; CANDIDATE GENES; NATIONAL CENTER; RARE DISEASES; EXOME;
VARIANTS; PRIORITIZATION
AB Exomiser is an application that prioritizes genes and variants in next-generation sequencing (NGS) projects for novel disease-gene discovery or differential diagnostics of Mendelian disease. Exomiser comprises a suite of algorithms for prioritizing exome sequences using random-walk analysis of protein interaction networks, clinical relevance and cross-species phenotype comparisons, as well as a wide range of other computational filters for variant frequency, predicted pathogenicity and pedigree analysis. In this protocol, we provide a detailed explanation of how to install Exomiser and use it to prioritize exome sequences in a number of scenarios. Exomiser requires similar to 3 GB of RAM and roughly 15-90 s of computing time on a standard desktop computer to analyze a variant call format (VCF) file. Exomiser is freely available for academic use from http://www.sanger.ac.uk/science/tools/exomiser.
C1 [Smedley, Damian; Jacobsen, Julius O. B.] Wellcome Trust Sanger Inst, Skarnes Fac Grp, Hinxton, England.
[Jaeger, Marten; Koehler, Sebastian; Holtgrewe, Manuel; Schubach, Max; Siragusa, Enrico; Zemojtel, Tomasz; Robinson, Peter N.] Charite, Inst Med & Human Genet, D-13353 Berlin, Germany.
[Jaeger, Marten; Robinson, Peter N.] Charite, Berlin Brandenburg Ctr Regenerat Therapies BCRT, D-13353 Berlin, Germany.
[Holtgrewe, Manuel; Siragusa, Enrico] Berlin Inst Hlth, Berlin, Germany.
[Siragusa, Enrico; Robinson, Peter N.] Max Planck Inst Mol Genet, D-14195 Berlin, Germany.
[Zemojtel, Tomasz] Polish Acad Sci, Inst Bioorgan Chem, Poznan, Poland.
[Zemojtel, Tomasz] Lab Berlin Charite Vivantes, Humangenet, Berlin, Germany.
[Buske, Orion J.] Univ Toronto, Dept Comp Sci, Toronto, ON, Canada.
[Buske, Orion J.] Hosp Sick Children, Genet & Genome Biol, Toronto, ON M5G 1X8, Canada.
[Washington, Nicole L.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Environm Genom & Syst Biol, Berkeley, CA 94720 USA.
[Bone, William P.] NIH, Undiagnosed Dis Program, Common Fund, Off Director, Bethesda, MD 20892 USA.
[Haendel, Melissa A.] Oregon Hlth & Sci Univ, Dept Med Informat & Clin Epidemiol, Portland, OR 97201 USA.
[Robinson, Peter N.] Free Univ Berlin, Inst Bioinformat, Dept Math & Comp Sci, Berlin, Germany.
RP Robinson, PN (reprint author), Charite, Inst Med & Human Genet, D-13353 Berlin, Germany.
EM peter.robinson@charite.de
OI Jacobsen, Julius/0000-0002-3265-1591; Kohler,
Sebastian/0000-0002-5316-1399
FU Bundesministerium fur Bildung und Forschung (BMBF) [0313911]; European
Community's Seventh Framework Programme [602300]; NIH [5R240D011883]
FX This project was supported by the Bundesministerium fur Bildung und
Forschung (BMBF; project no. 0313911), the European Community's Seventh
Framework Programme (grant agreement no. 602300; SYBIL) and NIH grant
no. 5R240D011883 (Monarch Initiative).
NR 78
TC 10
Z9 10
U1 3
U2 15
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1754-2189
EI 1750-2799
J9 NAT PROTOC
JI Nat. Protoc.
PD DEC
PY 2015
VL 10
IS 12
BP 2004
EP 2015
DI 10.1038/nprot.2015.124
PG 12
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA CY0UR
UT WOS:000366122600008
PM 26562621
ER
PT J
AU Sun, JC
Shi, Y
Georgescu, RE
Yuan, ZN
Chait, BT
Li, HL
O'Donnell, ME
AF Sun, Jingchuan
Shi, Yi
Georgescu, Roxana E.
Yuan, Zuanning
Chait, Brian T.
Li, Huilin
O'Donnell, Michael E.
TI The architecture of a eukaryotic replisome
SO NATURE STRUCTURAL & MOLECULAR BIOLOGY
LA English
DT Article
ID DNA-POLYMERASE-EPSILON; HUMAN GINS COMPLEX; SACCHAROMYCES-CEREVISIAE;
REPLICATION FORK; STRUCTURAL BASIS; CRYSTAL-STRUCTURE; CMG HELICASE;
DELTA; STRANDS; INSIGHTS
AB At the eukaryotic DNA replication fork, it is widely believed that the Cdc45-Mcm2-7-GINS (CMG) helicase is positioned in front to unwind DNA and that DNA polymerases trail behind the helicase. Here we used single-particle EM to directly image a Saccharomyces cerevisiae replisome. Contrary to expectations, the leading strand Pol epsilon is positioned ahead of CMG helicase, whereas Ctf4 and the lagging-strand polymerase (Pol) alpha-primase are behind the helicase. This unexpected architecture indicates that the leading-strand DNA travels a long distance before reaching Pol epsilon, first threading through the Mcm2-7 ring and then making a U-turn at the bottom and reaching Pol a at the top of CMG. Our work reveals an unexpected configuration of the eukaryotic replisome, suggests possible reasons for this architecture and provides a basis for further structural and biochemical replisome studies.
C1 [Sun, Jingchuan; Yuan, Zuanning; Li, Huilin] Brookhaven Natl Lab, Dept Biosci, Upton, NY 11973 USA.
[Sun, Jingchuan; Yuan, Zuanning; Li, Huilin] SUNY Stony Brook, Dept Biochem & Cell Biol, Stony Brook, NY 11794 USA.
[Shi, Yi; Georgescu, Roxana E.; Chait, Brian T.; O'Donnell, Michael E.] Rockefeller Univ, DNA Replicat Lab, New York, NY 10021 USA.
[Georgescu, Roxana E.; O'Donnell, Michael E.] Rockefeller Univ, Howard Hughes Med Inst, New York, NY 10021 USA.
RP O'Donnell, ME (reprint author), Rockefeller Univ, DNA Replicat Lab, 1230 York Ave, New York, NY 10021 USA.
EM hli@bnl.gov; odonnel@rockefeller.edu
OI O'Donnell, Michael/0000-0001-9002-4214
FU US National Institutes of Health [GM103314, GM109824, GM74985, AG29979,
GM38839]; Howard Hughes Medical Institute
FX We would like to thank O. Yurieva and D. Zhang for the purification of
CMG, Pol alpha, Pol epsilon and Ctf4. This work was funded by the US
National Institutes of Health (GM103314 and GM109824 to B.T.C.; GM74985
and AG29979 to H.L.; and GM38839 to M.E.O'D.) and the Howard Hughes
Medical Institute (M.E.O'D.).
NR 52
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U1 4
U2 25
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1545-9993
EI 1545-9985
J9 NAT STRUCT MOL BIOL
JI Nat. Struct. Mol. Biol.
PD DEC
PY 2015
VL 22
IS 12
BP 976
EP 982
DI 10.1038/nsmb.3113
PG 7
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA CY1FP
UT WOS:000366152400010
PM 26524492
ER
PT J
AU Barrett, KE
Ellis, KD
Glass, CR
Roth, GA
Teague, MP
Johns, J
AF Barrett, K. E.
Ellis, K. D.
Glass, C. R.
Roth, G. A.
Teague, M. P.
Johns, J.
TI Critical processes and parameters in the development of accident
tolerant fuels drop-in capsule irradiation tests
SO NUCLEAR ENGINEERING AND DESIGN
LA English
DT Article
DE Fuel engineering
AB The goal of the Accident Tolerant Fuel (ATF) program is to develop the next generation of Light Water Reactor (LWR) fuels with improved performance, reliability, and safety characteristics during normal operations and accident conditions and with reduced waste generation. An irradiation test series has been defined to assess the performance of proposed ATF concepts under normal LWR operating conditions. The Phase I ATF irradiation test series is planned to be performed as a series of drop-in capsule tests to be irradiated in the Advanced Test Reactor (ATR) operated by the Idaho National Laboratory (INL).
Design, analysis, and fabrication processes for ATR drop-in capsule experiment preparation are presented in this paper to demonstrate the importance of special design considerations, parameter sensitivity analysis, and precise fabrication and inspection techniques for figure innovative materials used in ATF experiment assemblies. A Taylor Series Method sensitivity analysis approach was used to identify the most critical variables in cladding and rodlet stress, temperature, and pressure calculations for design analyses. The results showed that internal rodlet pressure calculations are most sensitive to the fission gas release rate uncertainty while temperature calculations are most sensitive to cladding I.D. and O.D. dimensional uncertainty. The analysis showed that stress calculations are most sensitive to rodlet internal pressure uncertainties, however the results also indicated that the inside radius, outside radius, and internal pressure were all magnified as they propagate through the stress equation.
This paper demonstrates the importance for ATF concept development teams to provide the fabricators as much information as possible about the material properties and behavior observed in prototype testing, mock-up fabrication and assembly, and chemical and mechanical testing of the materials that may have been performed in the concept development phase. Special handling, machining, welding, and inspection of materials, if known, should also be communicated to the experiment fabrication and inspection team. Published by Elsevier B.V.
C1 [Barrett, K. E.; Ellis, K. D.; Glass, C. R.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Roth, G. A.] Informat Syst Lab, Idaho Falls, ID 83404 USA.
[Teague, M. P.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Johns, J.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Barrett, KE (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM Kristine.Barrett@inl.gov; groth@islinc.com; mpteagu@sandia.gov;
jesse.m.johns@gmail.com
FU U.S. Department of Energy (DOE) Fuel Cycle Research and Development
(FCRD) program; U.S. Department of Energy (DOE) Light Water Reactor
Sustainability (LWRS) program; FCRD Program; U.S. Department of Energy
[DE-AC07-05ID14517]; United States Government
FX The development of this paper was jointly supported by the U.S.
Department of Energy (DOE) Fuel Cycle Research and Development (FCRD)
and the Light Water Reactor Sustainability (LWRS) programs. The ATF
irradiation testing is funded by the FCRD Program. This manuscript has
been authored by Battelle Energy Alliance, LLC under Contract No.
DE-AC07-05ID14517 with the U.S. Department of Energy. The United States
Government retains and the publisher, by accepting the article for
publication, acknowledges that the United States Government retains a
nonexclusive, paid-up, irrevocable, world-wide license to publish or
reproduce the published form of this manuscript, or allow others to do
so, for United States Government purposes. Acknowledgements for support
of the ATF experiments at the INL go to the following:; Shannon
Bragg-Sitton FCRD LWR Fuel Coordination Lead; Heather Chichester FCRD
Irradiation Testing Technical Lead; Steven Hayes ATF Fuel Performance
Principal Investigator; Jason Harp ATF Fuel Performance and PIE
Principal Investigator; Glenn Moore ATF Fabrication Principal
Investigator; Michael Teague AFC Lead Design Engineer and Thermal
Analyst; Brian Durtschi Design Engineer; Misti Lillo Physics Analyst;
Christopher Glass Physics Analyst; Glenn Roth Thermal Analyst; Warren
Jones Thermal Analyst; Kelly Ellis Structural Analyst; Jesse Johns BISON
Analyst; Pavel Medvedev BISON Analyst; Stephen Evans ATR Representative;
Michael David ATR Experiment Engineer; Christine White Graphic Artist
NR 7
TC 0
Z9 0
U1 4
U2 8
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0029-5493
EI 1872-759X
J9 NUCL ENG DES
JI Nucl. Eng. Des.
PD DEC 1
PY 2015
VL 294
BP 38
EP 51
DI 10.1016/j.nucengdes.2015.07.074
PG 14
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA CY0DW
UT WOS:000366077500004
ER
PT J
AU Wang, D
Yoder, GL
Pointer, DW
Holcomb, DE
AF Wang, Dean
Yoder, Graydon L.
Pointer, David W.
Holcomb, David E.
TI Thermal hydraulics analysis of the Advanced High Temperature Reactor
SO NUCLEAR ENGINEERING AND DESIGN
LA English
DT Article
AB The Advanced High Temperature Reactor (AHTR) is a liquid salt-cooled nuclear reactor design concept, featuring low-pressure molten fluoride salt coolant, a carbon composite fuel form with embedded coated particle fuel, passively triggered negative reactivity insertion mechanisms, and fully passive decay heat rejection. This paper describes an AHTR system model developed using the Nuclear Regulatory Commission (NRC) thermal hydraulic transient code TRAC/RELAP Advanced Computational Engine (TRACE). The TRACE model includes all of the primary components: the core, downcomer, hot legs, cold legs, pumps, direct reactor auxiliary cooling system (DRACS), the primary heat exchangers (PHXs), etc. The TRACE model was used to help define and size systems such as the DRACS and the PHX. A loss of flow transient was also simulated to evaluate the performance of the reactor during an anticipated transient event. Some initial recommendations for modifying system component designs are also discussed. The TRACE model will be used as the basis for developing more detailed designs and ultimately will be used to perform transient safety analysis for the reactor. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Wang, Dean] Univ Massachusetts, Lowell, MA 01854 USA.
[Yoder, Graydon L.; Pointer, David W.; Holcomb, David E.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Wang, D (reprint author), Univ Massachusetts, One Univ Ave, Lowell, MA 01854 USA.
EM Dean_Wang@uml.edu
OI Holcomb, David/0000-0001-8263-4661; Pointer, W.
David/0000-0003-0946-7937
FU US Department of Energy [DE-AC05-00OR22725]
FX This manuscript has been authored by UT-Battelle LLC under Contract No.
DE-AC05-00OR22725 with the US Department of Energy. The United States
Government retains and the publisher, by accepting the article for
publication, acknowledges that the United States Government retains a
non-exclusive, paid-up, irrevocable, world-wide license to publish or
reproduce the published form of this manuscript, or allow others to do
so, for United States Government purposes.
NR 10
TC 3
Z9 3
U1 3
U2 14
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0029-5493
EI 1872-759X
J9 NUCL ENG DES
JI Nucl. Eng. Des.
PD DEC 1
PY 2015
VL 294
BP 73
EP 85
DI 10.1016/j.nucengdes.2015.08.017
PG 13
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA CY0DW
UT WOS:000366077500007
ER
PT J
AU Reckinger, SM
Petersen, MR
Reckinger, SJ
AF Reckinger, Shanon M.
Petersen, Mark R.
Reckinger, Scott J.
TI A study of overflow simulations using MPAS-Ocean: Vertical grids,
resolution, and viscosity
SO OCEAN MODELLING
LA English
DT Article
DE Dynamics of overflow mixing and entrainment (DOME); MPAS-Ocean; Sigma
vertical coordinate; Z-star with partial bottom cells; Model resolution
ID GRAVITY CURRENT ENTRAINMENT; SPECTRAL ELEMENT MODEL; SEA OUTFLOW PLUME;
CIRCULATION MODELS; Z-COORDINATE; CLIMATE MODELS; TURBULENT ENTRAINMENT;
TIME INTEGRATION; DENMARK STRAIT; ROTATING FLUID
AB MPAS-Ocean is used to simulate an idealized, density-driven overflow using the dynamics of overflow mixing and entrainment (DOME) setup. Numerical simulations are carried out using three of the vertical coordinate types available in MPAS-Ocean, including z-star with partial bottom cells, z-star with full cells, and sigma coordinates. The results are first benchmarked against other models, including the MITgcm's z-coordinate model and HIM's isopycnal coordinate model, which are used to set the base case used for this work. A full parameter study is presented that looks at how sensitive overflow simulations are to vertical grid type, resolution, and viscosity. Horizontal resolutions with 50 km grid cells are under-resolved and produce poor results, regardless of other parameter settings. Vertical grids ranging in thickness from 15 m to 120 m were tested. A horizontal resolution of 10 km and a vertical resolution of 60 m are sufficient to resolve the mesoscale dynamics of the DOME configuration, which mimics real-world overflow parameters. Mixing and final buoyancy are least sensitive to horizontal viscosity, but strongly sensitive to vertical viscosity. This suggests that vertical viscosity could be adjusted in overflow water formation regions to influence mixing and product water characteristics. Lastly, the study shows that sigma coordinates produce much less mixing than z-type coordinates, resulting in heavier plumes that go further down slope. Sigma coordinates are less sensitive to changes in resolution but as sensitive to vertical viscosity compared to z-coordinates. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Reckinger, Shanon M.] Fairfield Univ, Sch Engn, Dept Mech Engn, Fairfield, CT 06824 USA.
[Petersen, Mark R.] Los Alamos Natl Lab, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA.
[Reckinger, Scott J.] Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA.
RP Reckinger, SM (reprint author), Fairfield Univ, Sch Engn, Dept Mech Engn, 1073 North Benson Rd, Fairfield, CT 06824 USA.
EM shanon.reckinger@gmail.com
OI Petersen, Mark/0000-0001-7170-7511; Reckinger,
Shanon/0000-0003-1609-9861
FU Henry Luce Foundation through the Clare Boothe Luce Professorship; Earth
System Modeling Program of the Office of Biological and Environmental
Research within the US Department of Energy's Office of Science
FX Simulations were conducted using LANL Institutional Computing resources
and Fairfield University's Mithra computing cluster. S. M. Reckinger was
supported by the Henry Luce Foundation through the Clare Boothe Luce
Professorship. M. Petersen was supported by the Earth System Modeling
Program of the Office of Biological and Environmental Research within
the US Department of Energy's Office of Science. A special thanks to
Sonya Legg for her feedback, insight, and for providing us with MITgcm
and HIM results to compare against. The authors would also like to thank
the two anonymous reviewers for their thorough review and insight, which
improved the manuscript greatly.
NR 70
TC 0
Z9 0
U1 2
U2 7
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1463-5003
EI 1463-5011
J9 OCEAN MODEL
JI Ocean Model.
PD DEC
PY 2015
VL 96
BP 291
EP 313
DI 10.1016/j.ocemod.2015.09.006
PN 2
PG 23
WC Meteorology & Atmospheric Sciences; Oceanography
SC Meteorology & Atmospheric Sciences; Oceanography
GA CX9XA
UT WOS:000366058600010
ER
PT J
AU Agustsson, R
Arab, E
Murokh, A
O'Shea, B
Ovodenko, A
Pogorelsky, I
Rosenzweig, J
Solovyov, V
Tilton, R
AF Agustsson, R.
Arab, E.
Murokh, A.
O'Shea, B.
Ovodenko, A.
Pogorelsky, I.
Rosenzweig, J.
Solovyov, V.
Tilton, R.
TI Measuring single-shot, picosecond optical damage threshold in Ge, Si,
and sapphire with a 5.1-mu m laser
SO OPTICAL MATERIALS EXPRESS
LA English
DT Article
ID BULK TRANSPARENT MATERIALS; INDUCED BREAKDOWN; ACCELERATOR; PULSES;
SILICON; DRIVEN; WAVE
AB Optical photonic structures driven by picosecond, GW-class lasers are emerging as promising novel sources of electron beams and high quality X-rays. Due to quadratic dependence on wavelength of the laser ponderomotive potential, the performance of such sources scales very favorably towards longer drive laser wavelengths. However, to take full advantage of photonic structures at mid-IR spectral region, it is important to determine optical breakdown limits of common optical materials. To this end, an experimental study was carried out at a wavelength of 5 mu m, using a frequency-doubled CO2 laser source, with 5 ps pulse length. Single-shot optical breakdowns were detected and characterized at different laser intensities, and damage threshold values of 0.2, 0.3, and 7.0 J/cm(2), were established for Ge, Si, and sapphire, respectively. The measured damage threshold values were stable and repeatable within individual data sets, and across varying experimental conditions. (C)2015 Optical Society of America
C1 [Agustsson, R.; Murokh, A.; Ovodenko, A.; Tilton, R.] RadiaBeam Technol LLC, Santa Monica, CA 90404 USA.
[Arab, E.; O'Shea, B.; Rosenzweig, J.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[Pogorelsky, I.; Solovyov, V.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Agustsson, R (reprint author), RadiaBeam Technol LLC, Santa Monica, CA 90404 USA.
EM murokh@radiabeam.com
FU DARPA [N66001-11-1-4197]
FX This work was supported by DARPA under Contract No. N66001-11-1-4197.
NR 33
TC 1
Z9 1
U1 3
U2 6
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 2159-3930
J9 OPT MATER EXPRESS
JI Opt. Mater. Express
PD DEC 1
PY 2015
VL 5
IS 12
BP 2835
EP 2842
DI 10.1364/OME.5.002835
PG 8
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA CX9SO
UT WOS:000366045900013
ER
PT J
AU Rakhman, A
Notcutt, M
Liu, Y
AF Rakhman, Abdurahim
Notcutt, Mark
Liu, Yun
TI Power enhancement of burst-mode ultraviolet pulses using a doubly
resonant optical cavity
SO OPTICS LETTERS
LA English
DT Article
ID LASER FREQUENCY STABILIZATION; PARAMETRIC OSCILLATOR; CONTINUOUS-WAVE
AB We report a doubly resonant enhancement cavity (DREC) that can realize a simultaneous enhancement of two incoming laser beams at different wavelengths and different temporal structures. The double-resonance condition is theoretically analyzed, and different DREC locking methods are experimentally investigated. Simultaneous locking of a Fabry-Perot cavity to both an infrared (1064 nm) and its frequency-tripled ultraviolet (355 nm) pulses has been demonstrated by controlling the frequency difference between the two beams with a fiber-optic frequency shifter. The DREC technique enables novel applications of optical cavities to power enhancement of burst-mode lasers with arbitrary macropulse width and repetition rate. (C) 2015 Optical Society of America
C1 [Rakhman, Abdurahim; Liu, Yun] Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA.
[Rakhman, Abdurahim] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Notcutt, Mark] Stable Laser Syst, Boulder, CO 80301 USA.
RP Liu, Y (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM liuy2@ornl.gov
FU U.S. Department of Energy (DOE) [DE-AC05-00OR22725, DE-FG02-13ER41967]
FX U.S. Department of Energy (DOE) (DE-AC05-00OR22725, DE-FG02-13ER41967).
NR 21
TC 3
Z9 3
U1 1
U2 7
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
EI 1539-4794
J9 OPT LETT
JI Opt. Lett.
PD DEC 1
PY 2015
VL 40
IS 23
BP 5562
EP 5565
DI 10.1364/OL.40.005562
PG 4
WC Optics
SC Optics
GA CY0YY
UT WOS:000366134100037
PM 26625051
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CA CMS Collaboration
TI Production of leading charged particles and leading charged-particle
jets at small transverse momenta in pp collisions at root s=8 TeV
SO PHYSICAL REVIEW D
LA English
DT Article
ID PHYSICS; MODEL; QCD
AB The per-event yield of the highest transverse momentum charged particle and charged-particle jet, integrated above a given p(T)(min) threshold starting at p(T)(min) = 0.8 and 1 GeV, respectively, is studied in pp collisions at root s = 8 TeV. The particles and the jets are measured in the pseudorapidity ranges vertical bar n vertical bar < 2.4 and 1.9, respectively. The data are sensitive to the momentum scale at which parton densities saturate in the proton, to multiple partonic interactions, and to other key aspects of the transition between the soft and hard QCD regimes in hadronic collisions.
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[Abbiendi, G.; Benvenuti, A. C.; Bonacorsi, D.; Braibant-Giacomelli, S.; Brigliadori, L.; Campanini, R.; Capiluppi, P.; Castro, A.; Cavallo, F. R.; Codispoti, G.; Cuffiani, M.; Dallavalle, G. M.; Fabbri, F.; Fanfani, A.; Fasanella, D.; Giacomelli, P.; Grandi, C.; Guiducci, L.; Marcellini, S.; Masetti, G.; Montanari, A.; Navarria, F. L.; Perrotta, A.; Rossi, A. M.; Rovelli, T.; Siroli, G. P.; Tosi, N.; Travaglini, R.] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy.
[Bonacorsi, D.; Braibant-Giacomelli, S.; Brigliadori, L.; Campanini, R.; Capiluppi, P.; Castro, A.; Codispoti, G.; Cuffiani, M.; Fanfani, A.; Fasanella, D.; Guiducci, L.; Navarria, F. L.; Rossi, A. M.; Rovelli, T.; Siroli, G. P.; Tosi, N.; Travaglini, R.] Univ Bologna, Bologna, Italy.
[Albergo, S.; Cappello, G.; Chiorboli, M.; Costa, S.; Giordano, F.; Potenza, R.; Tricomi, A.; Tuve, C.] Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy.
[Albergo, S.; Chiorboli, M.; Costa, S.; Potenza, R.; Tricomi, A.; Tuve, C.] Univ Catania, Catania, Italy.
CSFNSM, Catania, Italy.
[Barbagli, G.; Ciulli, V.; Civinini, C.; D'Alessandro, R.; Focardi, E.; Gallo, E.; Gonzi, S.; Gori, V.; Lenzi, P.; Meschini, M.; Paoletti, S.; Sguazzoni, G.; Tropiano, A.] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy.
[Ciulli, V.; D'Alessandro, R.; Focardi, E.; Gonzi, S.; Gori, V.; Lenzi, P.; Tropiano, A.] Univ Florence, Florence, Italy.
[Benussi, L.; Bianco, S.; Fabbri, F.; Piccolo, D.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Ferretti, R.; Ferro, F.; Lo Vetere, M.; Robutti, E.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Ferretti, R.; Lo Vetere, M.; Tosi, S.] Univ Genoa, Genoa, Italy.
[Dinardo, M. E.; Fiorendi, S.; Gennai, S.; Gerosa, R.; Ghezzi, A.; Govoni, P.; Lucchini, M. T.; Malvezzi, S.; Manzoni, R. A.; Martelli, A.; Marzocchi, B.; Menasce, D.; Moroni, L.; Paganoni, M.; Pedrini, D.; Ragazzi, S.; Redaelli, N.; de Fatis, T. Tabarelli] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20133 Milan, Italy.
[Dinardo, M. E.; Fiorendi, S.; Gerosa, R.; Ghezzi, A.; Govoni, P.; Lucchini, M. T.; Manzoni, R. A.; Martelli, A.; Marzocchi, B.; Paganoni, M.; Ragazzi, S.; de Fatis, T. Tabarelli] Univ Milano Bicocca, Milan, Italy.
[Buontempo, S.; Cavallo, N.; Di Guida, S.; Fabozzi, F.; Iorio, A. O. M.; Lista, L.; Meola, S.; Merola, M.; Paolucci, P.] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy.
[Iorio, A. O. M.] Univ Naples Federico II, Naples, Italy.
[Cavallo, N.; Fabozzi, F.] Univ Basilicata, I-85100 Potenza, Italy.
[Di Guida, S.; Meola, S.] Univ G Marconi, Rome, Italy.
[Azzi, P.; Bacchetta, N.; Bellato, M.; Dall'Osso, M.; Dorigo, T.; Fantinel, S.; Gonella, F.; Gozzelino, A.; Gulmini, M.; Lacaprara, S.; Margoni, M.; Meneguzzo, A. T.; Montecassiano, F.; Pazzini, J.; Pegoraro, M.; Pozzobon, N.; Ronchese, P.; Sgaravatto, M.; Simonetto, F.; Torassa, E.; Tosi, M.; Vanini, S.; Ventura, S.; Zotto, P.; Zucchetta, A.] Ist Nazl Fis Nucl, Sez Padova, Padua, Italy.
[Dall'Osso, M.; Margoni, M.; Meneguzzo, A. T.; Pazzini, J.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Tosi, M.; Vanini, S.; Zotto, P.; Zucchetta, A.] Univ Padua, Padua, Italy.
Univ Trento, Trento, Italy.
[Gabusi, M.; Ratti, S. P.; Re, V.; Riccardi, C.; Salvini, P.; Vitulo, P.] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy.
[Gabusi, M.; Ratti, S. P.; Riccardi, C.; Vitulo, P.] Univ Pavia, I-27100 Pavia, Italy.
[Biasini, M.; Bilei, G. M.; Ciangottini, D.; Fano, L.; Lariccia, P.; Mantovani, G.; Menichelli, M.; Saha, A.; Santocchia, A.; Spiezia, A.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Biasini, M.; Ciangottini, D.; Fano, L.; Lariccia, P.; Mantovani, G.; Santocchia, A.; Spiezia, A.] Univ Perugia, I-06100 Perugia, Italy.
[Androsov, K.; Azzurri, P.; Bagliesi, G.; Bernardini, J.; Boccali, T.; Broccolo, G.; Castaldi, R.; Cioccia, M. A.; Dell'Orso, R.; Donato, S.; Fedi, G.; Fiori, F.; Foa, L.; Giassi, A.; Grippo, M. T.; Ligabue, F.; Lomtadze, T.; Martini, L.; Messineo, A.; Moon, C. S.; Palla, F.; Rizzi, A.; Savoy-Navarro, A.; Serban, A. T.; Spagnolo, P.; Squillacioti, P.; Tenchini, R.; Tonelli, G.; Venturi, A.; Verdini, P. G.; Vernieri, C.] Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.
[Martini, L.; Messineo, A.; Rizzi, A.; Tonelli, G.] Univ Pisa, Pisa, Italy.
[Broccolo, G.; Donato, S.; Fiori, F.; Foa, L.; Ligabue, F.; Vernieri, C.] Scuola Normale Super Pisa, Pisa, Italy.
[Barone, L.; Cavallari, F.; D'imperio, G.; Del Re, D.; Diemoz, M.; Joida, C.; Longo, E.; Margaroli, F.; Meridiani, P.; Micheli, F.; Organtini, G.; Paramatti, R.; Rahatlou, S.; Rovelli, C.; Santanastasio, F.; Soffi, L.; Traczyk, P.] Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.
[Barone, L.; D'imperio, G.; Del Re, D.; Longo, E.; Margaroli, F.; Micheli, F.; Organtini, G.; Rahatlou, S.; Santanastasio, F.; Soffi, L.; Traczyk, P.] Univ Rome, Rome, Italy.
[Amapane, N.; Arcidiacono, R.; Argiro, S.; Arneodo, M.; Bellan, R.; Biina, C.; Cartiglia, N.; Casasso, S.; Costa, M.; Covarelli, R.; Dattola, D.; Degano, A.; Demaria, N.; Finco, L.; Mariotti, C.; Maselli, S.; Migliore, E.; Monaco, V.; Musich, M.; Obertino, M. M.; Pacher, L.; Pastrone, N.; Pelliccioni, M.; Angioni, G. L. Pinna; Romero, A.; Ruspa, M.; Sacchi, R.; Solano, A.; Staiano, A.; Tamponi, U.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Amapane, N.; Argiro, S.; Bellan, R.; Casasso, S.; Costa, M.; Degano, A.; Finco, L.; Migliore, E.; Monaco, V.; Pacher, L.; Angioni, G. L. Pinna; Romero, A.; Sacchi, R.; Solano, A.] Univ Turin, Turin, Italy.
[Arcidiacono, R.; Arneodo, M.; Obertino, M. M.; Ruspa, M.] Univ Piemonte Orientate, Novara, Italy.
[Belforte, S.; Candelise, V.; Casarsa, M.; Cossutti, F.; Della Ricca, G.; Gobbo, B.; La Licata, C.; Marone, M.; Schizzi, A.; Umer, T.; Zanetti, A.] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy.
[Candelise, V.; Della Ricca, G.; La Licata, C.; Marone, M.; Schizzi, A.; Umer, T.] Univ Trieste, Trieste, Italy.
[Chang, S.; Kropivnitskaya, A.; Nam, S. K.] Kangwon Natl Univ, Chunchon, South Korea.
[Kim, D. H.; Kim, G. N.; Kim, M. S.; Kong, D. J.; Lee, S.; Oh, Y. D.; Park, H.; Sakharov, A.; Son, D. C.] Kyungpook Natl Univ, Taegu, South Korea.
[Kim, T. J.; Ryu, M. S.] Chonbuk Natl Univ, Jeonju 561756, South Korea.
[Kim, J. Y.; Moon, D. H.; Song, S.] Chonnam Natl Univ, Inst Universe & Elementary Particles, Kwangju, South Korea.
[Choi, S.; Gyun, D.; Hong, B.; Kim, H.; Kim, Y.; Lee, B.; Lee, K. S.; Park, S. K.; Roh, Y.] Korea Univ, Seoul, South Korea.
[Yoo, H. D.] Seoul Natl Univ, Seoul, South Korea.
[Choi, M.; Kim, J. H.; Park, I. C.; Ryu, G.] Univ Seoul, Seoul, South Korea.
[Choi, Y.; Choi, Y. K.; Goh, J.; Kim, D.; Kwon, E.; Lee, J.; Yu, I.] Sungkyunkwan Univ, Suwon, South Korea.
[Juodagalvis, A.] Vilnius State Univ, Vilnius, Lithuania.
[Komaragiri, J. R.; Ali, M. A. B. Md; Abdullah, W. A. T. Wan] Univ Malaya, Natl Ctr Particle Phys, Kuala Lumpur, Malaysia.
[Linares, E. Casimiro; Castilla-Valdez, H.; De La Cruz-Burelo, E.; Heredia-de La Cruz, I.; Hernandez-Almada, A.; Lopez-Fernandez, R.; Sanchez-Hernandez, A.] IPN, Ctr Invest Estudios Avanzados, Mexico City 07738, DF, Mexico.
[Moreno, S. Carrillo; Valencia, F. Vazquez] Univ Iberoamer, Mexico City, DF, Mexico.
[Pedraza, I.; Ibarguen, H. A. Salazar] Benemerita Univ Autonoma Puebla, Puebla, Mexico.
[Pineda, A. Morelos] Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico.
[Krofcheck, D.] Univ Auckland, Auckland 1, New Zealand.
[Butler, P. H.; Reucroft, S.] Univ Canterbury, Christchurch 1, New Zealand.
[Ahmad, A.; Ahmad, M.; Hassan, Q.; Hoorani, H. R.; Khan, W. A.; Khurshid, T.; Shoaib, M.] Quaid I Azam Univ, Natl Ctr Phys, Islamabad, Pakistan.
[Bialkowska, H.; Bluj, M.; Boimska, B.; Frueboes, T.; Gorski, M.; Kazana, M.; Nawrocki, K.; Romanowska-Rybinska, K.; Szleper, M.; Zalewski, P.] Natl Ctr Nucl Res, Otwock, Poland.
[Brona, G.; Bunkowski, K.; Cwiok, M.; Dominik, W.; Doroba, K.; Kalinowski, A.; Konecki, M.; Krolikowski, J.; Misiura, M.; Olszewski, M.] Univ Warsaw, Inst Expt Phys, Fac Phys, Warsaw, Poland.
[Bargassa, P.; Beirao Da Cruz E Silva, C.; Faccioli, P.; Ferreira Parracho, P. G.; Gallinaro, M.; Lloret Iglesias, L.; Nguyen, F.; Rodrigues Antunes, J.; Seixas, J.; Varela, J.; Vischia, P.] Lab Instrumentacao & Fis Expt Particulas, Lisbon, Portugal.
[Afanasiev, S.; Bunin, P.; Gavrilenko, M.; Golutvin, I.; Gorbunov, I.; Kamenev, A.; Karjavin, V.; Konoplyanikov, V.; Laney, A.; Malakhov, A.; Matveev, V.; Moisenz, P.; Palichik, V.; Perelygin, V.; Shmatov, S.; Skatchkov, N.; Smirnov, V.; Zarubin, A.] Joint Inst Nucl Res, Dubna, Russia.
[Golovtsov, V.; Ivanov, Y.; Kim, V.; Kuznetsova, E.; Levchenko, P.; Murzin, V.; Oreshkin, V.; Smirnov, I.; Sulimov, V.; Uvarov, L.; Vavilov, S.; Vorobyev, A.; Vorobyev, An.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Andreev, Yu.; Dermenev, A.; Gninenko, S.; Golubev, N.; Kirsanov, M.; Krasnikov, N.; Pashenkov, A.; Tlisov, D.; Toropin, A.] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia.
[Epshteyn, V.; Gavrilov, V.; Lychkovskaya, N.; Popov, V.; Pozdnyakov, I.; Safronov, G.; Semenov, S.; Spiridonov, A.; Stolin, V.; Vlasov, E.; Zhokin, A.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Andreev, V.; Azarkin, M.; Dremin, I.; Kirakosyan, M.; Leonidov, A.; Mesyats, G.; Rusakov, S. V.; Vinogradov, A.] PN Lebedev Phys Inst, Moscow 117924, Russia.
[Belyaev, A.; Boos, E.; Ershov, A.; Gribushin, A.; Khein, L.; Klyukhin, V.; Kodolova, O.; Lokhtin, I.; Lukina, O.; Obraztsov, S.; Petrushanko, S.; Savrin, V.; Snigirev, A.] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia.
[Azhgirey, I.; Bayshev, I.; Bitioukov, S.; Kachanov, V.; Kalinin, A.; Konstantinov, D.; Krychkine, V.; Petrov, V.; Ryutin, R.; Sobo, A.; Tourtchanovitch, L.; Troshin, S.; Tyurin, N.; Uzunian, A.; Volkov, A.] Inst High Energy Phys, State Res Ctr Russian Federat, Protvino, Russia.
[Adzic, P.; Ekmedzic, M.; Milosevic, J.; Rekovic, V.] Univ Belgrade, Fac Phys, Belgrade 11001, Serbia.
[Adzic, P.; Ekmedzic, M.; Milosevic, J.; Rekovic, V.] Vinca Inst Nucl Sci, Belgrade, Serbia.
[Alcaraz Maestre, J.; Battilana, C.; Calvo, E.; Cerrada, M.; Chamizo Llatas, M.; Colino, N.; De La Cruz, B.; Delgado Peris, A.; Dominguez Vazquez, D.; Escalante Del Valle, A.; Fernandez Bedoya, C.; Fernandez Ramos, J. P.; Flix, J.; Fouz, M. C.; Garcia-Abia, P.; Gonzalez Lopez, O.; Goy Lopez, S.; Hernandez, J. M.; Josa, M. I.; Navarro De Martino, E.; Perez-Calero Yzquierdo, A.; Puerta Pelayo, J.; Quintario Olmeda, A.; Redondo, I.; Romero, L.; Soares, M. S.] CIEMAT, Madrid, Spain.
[Albajar, C.; de Troconiz, J. F.; Missiroli, M.; Moran, D.] Univ Autonoma Madrid, Madrid, Spain.
[Brun, H.; Cuevas, J.; Fernandez Menendez, J.; Folgueras, S.; Gonzalez Caballero, I.] Univ Oviedo, Oviedo, Spain.
[Brochero Cifuentes, J. A.; Cabrillo, I. J.; Calderon, A.; Duarte Campderros, J.; Fernandez, M.; Gomez, G.; Graziano, A.; Lopez Virto, A.; Marco, J.; Marco, R.; Martinez Riven, C.; Matorras, F.; Munoz Sanchez, F. J.; Piedra Gomez, J.; Rodrigo, T.; Rodriguez-Marrero, A. Y.; Ruiz-Jimeno, A.; Scodellaro, L.; Vila, I.; Vilar Cortabitarte, R.] Univ Cantabria, CSIC, Inst Fis Cantabria IFCA, E-39005 Santander, Spain.
[Abbaneo, D.; Auffray, E.; Auzinger, G.; Bachtis, M.; Baillon, P.; Ball, A. H.; Barney, D.; Benaglia, A.; Bendavid, J.; Benhabib, L.; Benitez, J. F.; Bianchi, G.; Bloch, P.; Bocci, A.; Bonato, A.; Bondu, O.; Botta, C.; Breuker, H.; Camporesi, T.; Cerminara, G.; Colafranceschi, S.; D'Alfonso, M.; d'Enterria, D.; Dabrowski, A.; David, A.; De Guio, F.; De Roeck, A.; De Visscher, S.; Di Marco, E.; Dobson, M.; Dordevic, M.; Dorney, B.; Dupont, N.; Elliott-Peisert, A.; Eugster, J.; Franzoni, G.; Funk, W.; Gigi, D.; Gill, K.; Giordano, D.; Girone, M.; Glege, F.; Guida, R.; Gundacker, S.; Guthoff, M.; Hammer, J.; Hansen, M.; Harris, P.; Hegeman, J.; Innocente, V.; Janot, P.; Kousouris, K.; Krajczar, K.; Lecoq, P.; Lourenco, C.; Magini, N.; Malgeri, L.; Mannelli, M.; Marrouche, J.; Masetti, L.; Meijers, F.; Mersi, S.; Meschi, E.; Moortgat, F.; Morovic, S.; Mulders, M.; Orfanelli, S.; Orsini, L.; Pape, L.; Perez, E.; Petrilli, A.; Petrucciani, G.; Pfeiffer, A.; Pimilae, M.; Piparo, D.; Plagge, M.; Racz, A.; Rolandi, G.; Rovere, M.; Sakulin, H.; Schaefer, C.; Schwick, C.; Sharma, A.; Siegrist, P.; Silva, P.; Simon, M.; Sphicas, P.; Spiga, D.; Steggemann, J.; Stieger, B.; Stoye, M.; Takahashi, Y.; Treille, D.; Tsirou, A.; Veres, G. I.; Wardle, N.; Woehri, H. K.; Wollny, H.; Zeuner, W. D.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.
[Bertl, W.; Deiters, K.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H. C.; Kotlinski, D.; Langenegger, U.; Renker, D.; Rohe, T.] Paul Scherrer Inst, Villigen, Switzerland.
[Bachmair, F.; Baeni, L.; Bianchini, L.; Buchmann, M. A.; Casal, B.; Chanon, N.; Dissertori, G.; Dittmar, M.; Donega, M.; Duenser, M.; Eller, P.; Grab, C.; Hits, D.; Hoss, J.; Kasieczka, G.; Lustermann, W.; Mangano, B.; Marini, A. C.; Marionneau, M.; del Arbol, P. Martinez Ruiz; Masciovecchio, M.; Meister, D.; Mohr, N.; Musella, P.; Naegeli, C.; Nessi-Tedaldi, F.; Pandolfi, F.; Pauss, F.; Perrozzi, L.; Peruzzi, M.; Quittnat, M.; Rebane, L.; Rossini, M.; Starodumov, A.; Takahashi, M.; Theofilatos, K.; Wallny, R.; Weber, H. A.] ETH, Inst Particle Phys, Zurich, Switzerland.
[Amsler, C.; Canelli, M. F.; Chiochia, V.; De Cosa, A.; Hinzmann, A.; Hreus, T.; Kilminster, B.; Lange, C.; Ngadiuba, J.; Pinna, D.; Robmann, P.; Ronga, F. J.; Taroni, S.; Yang, Y.] Univ Zurich, Zurich, Switzerland.
[Cardaci, M.; Chen, K. H.; Ferro, C.; Kuo, C. M.; Lin, W.; Lu, Y. J.; Volpe, R.; Yu, S. S.; Bartek, R.] Natl Cent Univ, Chungli 32054, Taiwan.
[Chang, P.; Chang, Y. H.; Chao, Y.; Chen, K. F.; Chen, P. H.; Dietz, C.; Grundler, U.; Hou, W-S.; Liu, Y. F.; Lu, R-S.; Moya, M. Minano; Petrakou, E.; Tsai, J. F.; Tzeng, Y. M.] NTU, Taipei, Taiwan.
[Asavapibhop, B.; Singh, G.; Srimanobhas, N.; Suwonjandee, N.] Chulalongkorn Univ, Fac Sci, Dept Phys, Bangkok, Thailand.
[Adiguzel, A.; Bakirci, M. N.; Cerci, S.; Dozen, C.; Dumanoglu, I.; Eskut, E.; Girgis, S.; Gokbulut, G.; Guler, Y.; Gurpinar, E.; Hos, I.; Kangal, E. E.; Topaksu, A. Kayis; Onengut, G.; Ozdemir, K.; Ozturk, S.; Polatoz, A.; Cerci, D. Sunar; Tali, B.; Topakli, H.; Vergili, M.; Zorbilmez, C.] Cukurova Univ, Adana, Turkey.
[Akin, I. V.; Bilin, B.; Bilmis, S.; Gamsizkan, H.; Isildak, B.; Karapinar, G.; Ocalan, K.; Sekmen, S.; Surat, U. E.; Yalvac, M.; Zeyrek, M.] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey.
[Albayrak, E. A.; Guelmez, E.; Kaya, M.; Kaya, O.; Yetkin, T.] Bogazici Univ, Istanbul, Turkey.
[Cankocak, K.; Vardarli, F. I.] Istanbul Tech Univ, TR-80626 Istanbul, Turkey.
[Levchuk, L.; Sorokin, P.] Kharkov Inst Phys & Technol, Natl Sci Ctr, Kharkov, Ukraine.
[Brooke, J. J.; Clement, E.; Cussans, D.; Flacher, H.; Goldstein, J.; Grimes, M.; Heath, G. P.; Heath, H. F.; Jacob, J.; Kreczko, L.; Lucas, C.; Meng, Z.; Newbold, D. M.; Paramesvaran, S.; Poll, A.; Sakuma, T.; El Nasr-Storey, S. Seif; Senkin, S.; Smith, V. J.] Univ Bristol, Bristol, Avon, England.
[Bell, K. W.; Belyaev, A.; Brew, C.; Brown, R. M.; Cockerill, D. J. A.; Coughlan, J. A.; Harder, K.; Harper, S.; Olaiya, E.; Petyt, D.; Shepherd-Themistocleous, C. H.; Thea, A.; Tomalin, I. R.; Williamz, T.; Womersley, W. J.; Worm, S. D.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Baber, M.; Bainbridge, R.; Buchmuller, O.; Burton, D.; Colling, D.; Cripps, N.; Dauncey, P.; Davies, G.; Della Negra, M.; Dunne, R.; Elwood, A.; Ferguson, W.; Fulcher, J.; Futyan, D.; Hall, G.; Iles, G.; Jarvis, M.; Karapostoli, G.; Kenzie, M.; Lane, R.; Lucas, R.; Lyons, L.; Magnan, A-M.; Malik, S.; Mathias, B.; Nash, J.; Nikitenko, A.; Pela, J.; Pesaresi, M.; Petridis, K.; Raymond, D. M.; Rogerson, S.; Rose, A.; Seez, C.; Sharp, P.; Tapper, A. A.; Acosta, M. Vazquez; Virdee, T.; Zenz, S. C.] Univ London Imperial Coll Sci Technol & Med, London, England.
[Cole, J. E.; Hobson, P. R.; Khan, A.; Kyberd, P.; Leggat, D.; Leslie, D.; Reid, I. D.; Symonds, P.; Teodorescu, L.; Turner, M.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Dittmann, J.; Hatakeyama, K.; Kasmi, A.; Liu, H.; Pastika, N.; Scarborough, T.; Wu, Z.] Baylor Univ, Waco, TX 76798 USA.
[Charaf, O.; Cooper, S. I.; Henderson, C.; Rumerio, P.] Univ Alabama, Tuscaloosa, AL USA.
[Avetisyan, A.; Bose, T.; Fantasia, C.; Lawson, P.; Richardson, C.; Rohlf, J.; St John, J.; Sulak, L.] Boston Univ, Boston, MA 02215 USA.
[Alimena, J.; Berry, E.; Bhattacharya, S.; Christopher, G.; Cutts, D.; Demiragli, Z.; Dhingra, N.; Ferapontov, A.; Garabedian, A.; Heintz, U.; Laird, E.; Landsberg, G.; Mao, Z.; Narain, M.; Sagir, S.; Sinthuprasith, T.; Speer, T.; Swanson, J.; Breedon, R.; Breto, G.] Brown Univ, Providence, RI 02912 USA.
[Sanchez, M. Calderon De La Barca; Chauhan, S.; Chertok, M.; Conway, J.; Conway, R.; Cox, P. T.; Erbacher, R.; Gardner, M.; Ko, W.; Lander, R.; Mulhearn, M.; Pellett, D.; Pilot, J.; Ricci-Tam, F.; Shalhout, S.; Smith, J.; Squires, M.; Stolp, D.; Tripathi, M.; Wilbur, S.; Yohay, R.; Cousins, R.] Univ Calif Davis, Davis, CA 95616 USA.
[Everaerts, P.; Farrell, C.; Hauser, J.; Ignatenko, M.; Rakness, G.; Takasugi, E.; Valuev, V.; Weber, M.] Univ Calif Los Angeles, Los Angeles, CA USA.
[Burt, K.; Clare, R.; Ellison, J.; Gary, J. W.; Hanson, G.; Heilman, J.; Paneva, M. Ivova; Jandir, P.; Kennedy, E.; Lacroix, F.; Long, O. R.; Luthra, A.; Malberti, M.; Negrete, M. Olmedo; Shrinivas, A.; Sumowidagdo, S.; Wimpenny, S.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Branson, J. G.; Cerati, G. B.; Cittolin, S.; D'Agnolo, R. T.; Holzner, A.; Kelley, R.; Klein, D.; Letts, J.; Macneill, I.; Olivito, D.; Padhi, S.; Palmer, C.; Pieri, M.; Sani, M.; Sharma, V.; Simon, S.; Tadel, M.; Tu, Y.; Vartak, A.; Welke, C.; Wuerthwein, F.; Yagil, A.; Della Porta, G. Zevi] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Barge, D.; Bradmiller-Feld, J.; Campagnari, C.; Danielson, T.; Dishaw, A.; Dutta, V.; Flowers, K.; Sevilla, M. Franco; Geffert, R.; George, C.; Golf, F.; Gouskos, L.; Incandela, J.; Justus, C.; Mccoll, N.; Mullin, S. D.; Richman, J.; Stuart, D.; To, W.; West, C.; Yoo, J.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Apresyan, A.; Bornheim, A.; Bunn, J.; Chen, Y.; Duarte, J.; Mott, A.; Newman, H. B.; Pena, C.; Pierini, M.; Spiropulu, M.; Vlimant, J. R.; Wilkinson, R.; Xie, S.; Zhu, R. Y.] CALTECH, Pasadena, CA 91125 USA.
[Azzolini, V.; Calamba, A.; Carlson, B.; Ferguson, T.; Iiyama, Y.; Paulini, M.; Russ, J.; Vogel, H.; Vorobiev, I.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Cumalat, J. P.; Ford, W. T.; Gaz, A.; Krohn, M.; Lopez, E. Luiggi; Nauenberg, U.; Smith, J. G.; Stenson, K.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Alexander, J.; Chatterjee, A.; Chaves, J.; Chu, J.; Dittmer, S.; Eggert, N.; Mirman, N.; Kaufman, G. Nicolas; Patterson, J. R.; Ryd, A.; Salvati, E.; Skinnari, L.; Sun, W.; Teo, W. D.; Thom, J.; Thompson, J.; Tucker, J.; Weng, Y.; Winstrom, L.; Wittich, P.] Cornell Univ, Ithaca, NY USA.
[Winn, D.] Fairfield Univ, Fairfield, CT 06430 USA.
[Abdullin, S.; Albrow, M.; Anderson, J.; Apollinari, G.; Bauerdick, L. A. T.; Beretvas, A.; Berryhill, J.; Bhat, P. C.; Bolla, G.; Burkett, K.; Butler, J. N.; Cheung, H. W. K.; Chlebana, F.; Cihangir, S.; Elvira, V. D.; Fisk, I.; Freeman, J.; Gottschalk, E.; Gray, L.; Green, D.; Gruenendahl, S.; Gutsche, O.; Hanlon, J.; Hare, D.; Hirschauer, J.; Hooberman, B.; Jindariani, S.; Johnson, M.; Joshi, U.; Klima, B.; Kreis, B.; Kwan, S.; Linacre, J.; Lincoln, D.; Lipton, R.; Liu, T.; De Sa, R. Lopes; Lykken, J.; Maeshima, K.; Marraffino, J. M.; Outschoom, V. I. Martinez; Maruyama, S.; Mason, D.; McBride, P.; Merke, P.; Mishra, K.; Mrenna, S.; Nahn, S.; Newman-Holmes, C.; O'Dell, V.; Prokofyev, O.; Sexton-Kennedy, E.; Soha, A.; Spalding, W. J.; Spiegel, L.; Taylor, L. L.; Tkacyk, S.; Tran, N. V.; Uplegger, L.; Vaandering, E. W.; Vidal, R.; Whitbeck, A.; Whitmore, J.; Yang, F.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Costa, D.; Avery, P.; Bortignon, P.; Bourilkov, D.; Carver, M.; Curry, D.; Das, S.; De Gruttola, M.; Di Giovanni, G. P.; Field, R. D.; Fisher, M.; Furic, I. K.; Hugon, J.; Konigsberg, J.; Korytov, A.; Kypreos, T.; Low, J. F.; Matchev, K.; Mei, H.; Milenovic, P.; Mitselmakher, G.; Muniz, L.; Rinkevicius, A.; Shchutska, L.; Snowball, M.; Sperka, D.; Yelton, J.; Zakaria, M.] Univ Florida, Gainesville, FL USA.
[Hewamanage, S.; Linn, S.; Markowitz, P.; Martinez, G.; Rodriguez, J. L.] Florida Int Univ, Miami, FL 33199 USA.
[Adams, J. R.; Adams, T.; Askew, A.; Bochenek, J.; Diamond, B.; Haas, J.; Hagopian, S.; Hagopian, V.; Johnson, K. F.; Prosper, H.; Veeraraghavan, V.; Weinberg, M.] Florida State Univ, Tallahassee, FL 32306 USA.
[Baarmand, M. M.; Hohlmann, M.; Kalakhety, H.; Yumiceva, F.; Adams, M. R.] Florida Inst Technol, Melbourne, FL 32901 USA.
[Apanasevich, L.; Berry, D.; Belts, R. R.; Bucinskaite, I.; Cavanaugh, R.; Evdokimov, O.; Gauthier, L.; Gerber, C. E.; Hofman, D. J.; Kurt, P.; O'Brien, C.; Gonzalez, I. D. Sandoval; Silkworth, C.; Turner, P.; Varelas, N.] UIC, Chicago, IL USA.
[Bilki, B.; Clarida, W.; Dilsiz, K.; Haytmyradov, M.; Khristenko, V.; Merlo, J-P.; Mermerkaya, H.; Mestvirishvili, A.; Moeller, A.; Nachtman, J.; Ogul, H.; Onel, Y.; Ozok, F.; Penzo, A.; Rahmat, R.; Sen, S.; Tan, P.; Tiras, E.; Wetzel, J.; Yi, K.] Univ Iowa, Iowa City, IA USA.
[Anderson, I.; Barnett, B. A.; Blumenfeld, B.; Bolognesi, S.; Fehling, D.; Gritsan, A. V.; Maksimovic, P.; Martin, C.; Swartz, M.; Xiao, M.] Johns Hopkins Univ, Baltimore, MD USA.
[Baringer, P.; Bean, A.; Benelli, G.; Bruner, C.; Gray, J.; Kenny, R. R., III; Majumder, D.; Malek, M.; Murray, M.; Noonan, D.; Sanders, S.; Sekaric, J.; Stringer, R.; Wang, Q.; Wood, J. S.] Univ Kansas, Lawrence, KS 66045 USA.
[Chakaberia, I.; Ivanov, A.; Kaadze, K.; Khali, S.; Makouski, M.; Maravin, Y.; Saini, L. K.; Skhirtladze, N.; Svintradze, I.] Kansas State Univ, Manhattan, KS 66506 USA.
[Gronberg, J.; Lange, D.; Rebassoo, F.; Wright, D.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Baden, A.; Belloni, A.; Calvert, B.; Eno, S. C.; Gomez, J. J. A.; Hadley, N. J.; Jabeen, S.; Kellogg, R. G.; Kolberg, T.; Lu, Y.; Mignerey, A. C.; Pedro, K.; Skuja, A.; Tonjes, M. B.; Tonwar, S. C.] Univ Maryland, College Pk, MD 20742 USA.
[Apyan, A.; Barbieri, R.; Bierwagen, K.; Busza, W.; Cali, I. A.; Di Matteo, L.; Ceballos, G. Gomez; Goncharov, M.; Gulhan, D.; Klute, M.; Lai, Y. S.; Lee, Y-J.; Levin, A.; Luckey, P. D.; Paus, C.; Ralph, D.; Roland, C.; Roland, G.; Stephans, G. S. F.; Sumorok, K.; Velicanu, D.; Veverka, J.; Wyslouch, B.; Yang, M.; Zanetti, M.; Zhukova, V.] MIT, Cambridge, MA 02139 USA.
[Dahmes, B.; Gude, A.; Kao, S. C.; Klapoetke, K.; Kubota, Y.; Mans, J.; Nourbakhsh, S.; Rusack, R.; Singovsky, A.; Tambe, N.; Turkewitz, J.] Univ Minnesota, Minneapolis, MN USA.
[Acosta, J. G.; Oliveros, S.] Univ Mississippi, Oxford, MS USA.
[Avdeeva, E.; Bloom, K.; Bose, S.; Claes, D. R.; Dominguez, A.; Suarez, R. Gonzalez; Keller, J.; Knowlton, D.; Kravehenko, I.; Lazo-Flores, J.; Meier, F.; Ratnikov, F.; Snow, G. R.; Zvada, M.] Univ Nebraska, Lincoln, NE USA.
[Dolen, J.; Godshalk, A.; Iashvili, I.; Kharchilava, A.; Kumar, A.; Rappoccio, S.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Alverson, G.; Barberis, E.; Baumgarte, D.; Chasco, M.; Massironi, A.; Morse, D. M.; Nash, D.; Orimoto, T.; Trocino, D.; Wang, R-J.; Wood, D.; Zhang, J.] Northeastern Univ, Boston, MA 02115 USA.
[Hahn, K. A.; Kubik, A.; Mucia, N.; Odell, N.; Pollack, B.; Pozdnyakov, A.; Schmitt, M.; Stoynev, S.; Sung, K.; Velasco, M.; Won, S.] Northwestern Univ, Evanston, IL USA.
[Brinkerhoff, A.; Chan, K. M.; Drozdetskiy, A.; Hildreth, M.; Jessop, C.; Karmgard, D. J.; Kellams, N.; Lannon, K.; Lynch, S.; Marinelli, N.; Musienko, Y.; Pearson, T.; Planer, M.; Ruchti, R.; Smith, G.; Valls, N.; Wayne, M.; Wolf, M.; Woodard, A.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Antonelli, L.; Brinson, J.; Bylsma, B.; Durkin, L. S.; Flowers, S.; Hart, A.; Hill, C.; Hughes, R.; Kotov, K.; Ling, T. Y.; Luo, W.; Puigh, D.; Rodenburg, M.; Winer, B. L.; Wolfe, H.; Wulsin, H. W.] Ohio State Univ, Columbus, OH 43210 USA.
[Driga, O.; Elmer, P.; Hardenbrook, J.; Hebda, P.; Koay, S. A.; Lujan, P.; Marlow, D.; Medvedeva, T.; Mooney, M.; Olsen, J.; Piroue, P.; Quan, X.; Saka, H.; Stickland, D.; Tully, C.; Werner, J. S.; Zuranski, A.] Princeton Univ, Princeton, NJ 08544 USA.
[Brownson, E.; Malik, S.; Mendez, H.; Vargas, J. E. Ramirez] Univ Puerto Rico, Mayaguez, PR USA.
[Barnes, V. E.; Benedetti, D.; Bortoletto, D.; Gutay, L.; Hu, Z.; Jha, M. K.; Jones, M.; Jung, K.; Kress, M.; Leonardo, N.; Miller, D. H.; Neumeister, N.; Primavera, F.; Radburn-Smith, B. C.; Shi, X.; Shipsey, I.; Silvers, D.; Svyatkovskiy, A.; Wang, F.; Xie, W.; Xu, L.; Zablocki, J.] Purdue Univ, W Lafayette, IN 47907 USA.
[Parashar, N.; Stupak, J.] Purdue Univ Calumet, Hammond, LA USA.
[Adair, A.; Akgun, B.; Ecklund, K. M.; Geurts, F. J. M.; Li, W.; Michlin, B.; Padley, B. P.; Redjimi, R.; Roberts, J.; Zabel, J.] Rice Univ, Houston, TX USA.
[Betchart, B.; Bodek, A.; De Barbaro, P.; Demina, R.; Eshaq, Y.; Ferbel, T.; Galanti, M.; Garcia-Bellido, A.; Goldenzweig, P.; Han, J.; Harel, A.; Hindrichs, O.; Khukhunaishvili, A.; Korjenevski, S.; Petrillo, G.; Verzetti, M.; Vishnevskiy, D.] Univ Rochester, Rochester, NY 14627 USA.
[Ciesielski, R.; Demortier, L.; Goulianos, K.; Mesropian, C.] Rockefeller Univ, New York, NY 10021 USA.
[Arora, S.; Barker, A.; Chou, J. P.; Contreras-Campana, C.; Contreras-Campana, E.; Duggan, D.; Ferencek, D.; Gershtein, Y.; Gray, R.; Halkiadakis, E.; Hidas, D.; Kaplan, S.; Lath, A.; Panwalkar, S.; Park, M.; Salur, S.; Schnetzer, S.; Sheffield, D.; Somalwar, S.; Stone, R.; Thomas, S.; Thomassen, P.; Walker, M.] Rutgers State Univ, Piscataway, NJ USA.
[Rose, K.; Spanier, S.; York, A.] Univ Tennessee, Knoxville, TN USA.
[Bouhali, O.; Hernandez, A. Castaneda; Dalchenko, M.; De Mattia, M.; Dildick, S.; Eusebi, R.; Flanagan, W.; Gilmore, J.; Kamon, T.; Khotilovich, V.; Krutelyov, V.; Montalvo, R.; Osipenkov, I.; Pakhotin, Y.; Patel, R.; Perloff, A.; Roe, J.; Rose, A.; Safonov, A.; Suarez, I.; Tatarinov, A.; Ulmer, K. A.] Texas A&M Univ, College Stn, TX USA.
[Akchurin, N.; Cowden, C.; Damgov, J.; Dragoiu, C.; Dudero, P. R.; Faulkner, J.; Kovitanggoon, K.; Kunori, S.; Lee, S. W.; Libeiro, T.; Volobouev, I.] Texas Tech Univ, Lubbock, TX 79409 USA.
[Appelt, E.; Delannoy, A. G.; Greene, S.; Gurrola, A.; Johns, W.; Maguire, C.; Mao, Y.; Melo, A.; Sharma, M.; Sheldon, P.; Snook, B.; Tuo, S.; Velkovska, J.] Vanderbilt Univ, Nashville, TN 37235 USA.
[Arenton, M. W.; Boutle, S.; Cox, B.; Francis, B.; Goodell, J.; Hirosky, R.; Ledovskoy, A.; Li, H.; Lin, C.; Neu, C.; Wolfe, E.; Wood, J.] Univ Virginia, Charlottesville, VA USA.
[Clarke, C.; Harr, R.; Karchin, P. E.; Don, C. Kottachchi Kankanamge; Lamichhane, P.; Sturdy, J.] Wayne State Univ, Detroit, MI USA.
[Belknap, D. A.; Carlsmith, D.; Cepeda, M.; Dasu, S.; Dodd, L.; Duric, S.; Friis, E.; Hall-Wilton, R.; Herndon, M.; Herve, A.; Klabbers, P.; Lanaro, A.; Lazaridis, C.; Levine, A.; Loveless, R.; Mohapatra, A.; Ojalvo, I.; Perry, T.; Pierro, G. A.; Polese, G.; Ross, I.; Sarangi, T.; Savin, A.; Smith, W. H.; Taylor, D.; Vuosalo, C.; Woods, N.] Univ Wisconsin, Madison, WI 53706 USA.
[Fruehwirth, R.; Jeitler, M.; Krammer, M.; Wulz, C-E.] Vienna Univ Technol, A-1040 Vienna, Austria.
[Rabady, D.; Pernie, L.; Genchey, V.; Boudou, G.; Contardo, D.; Lingemann, J.; Hartmann, F.; Kornnriayer, A.; Mohanty, A. K.; Radogna, R.; Silvestris, L.; Giordano, F.; Gennai, S.; Gerosa, R.; Ghezzi, A.; Lucchini, M. T.; Marzocchi, B.; Di Guida, S.; Meola, S.; Paolucci, P.; Ciangottini, D.; Fano, L.; Spiezia, A.; Donato, S.; Palla, F.; Micheli, F.; Traczyk, P.; Casasso, S.; Finco, L.; Candelise, V.; Stickland, D.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.
[Beluffi, C.] Univ Haute Alsace Mulhouse, Inst Pluridisciplinaire Hubert Curien, Univ Strasbourg, CNRS,IN2P3, Strasbourg, France.
[Giammanco, A.] NICPB, Tallinn, Estonia.
[Popov, A.; Zhukov, V.; Katkov, I.] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia.
[Chinellato, J.; Tonelli Manganote, E. J.] Univ Estadual Campinas, Campinas, SP, Brazil.
[Plestina, R.; Bernet, C.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
[Zhang, F.] Univ Libre Bruxelles, Brussels, Belgium.
[Finger, M., Jr.; Tsamalaidze, Z.] Joint Inst Nucl Res, Dubna, Russia.
[Assran, Y.] Suez Univ, Suez, Egypt.
[Elgammal, S.] British Univ Egypt, Cairo, Egypt.
[Kamel, A. Ellithi] Cairo Univ, Cairo, Egypt.
[Mahmoud, M. A.] Fayoum Univ, Al Fayyum, Egypt.
[Agram, J-L.; Conte, E.; Fontaine, J-C.] Univ Haute Alsace, Mulhouse, France.
[Hempel, M.; Karacheban, O.; Lohmann, W.; Marfin, I.] Brandenburg Tech Univ Cottbus, Cottbus, Germany.
[Horvath, D.] Inst Nucl Res ATOMKI, Debrecen, Hungary.
[Vesztergombi, G.; Veres, G. I.] Eotvos Lorand Univ, Budapest, Hungary.
[Karancsi, J.] Univ Debrecen, Debrecen, Hungary.
[Bhowmik, S.; Maity, M.] Visva Bharati Univ, Santini Ketan, W Bengal, India.
[Gurtu, A.] King Abdulaziz Univ, Jeddah 21413, Saudi Arabia.
[Wickramage, N.] Univ Ruhuna, Matara, Sri Lanka.
[Etesami, S. M.] Isfahan Univ Technol, Esfahan, Iran.
[Fahim, A.] Univ Tehran, Dept Engn Sci, Tehran, Iran.
[Safarzadeh, B.] Islamic Azad Univ, Sci & Res Branch, Plasma Phys Res Ctr, Tehran, Iran.
[Gulmini, M.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy.
[Androsov, K.; Cioccia, M. A.; Grippo, M. T.; Squillacioti, P.] Univ Siena, I-53100 Siena, Italy.
[Moon, C. S.] IN2P3, CNRS, Paris, France.
[Savoy-Navarro, A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Ali, M. A. B. Md] Int Islamic Univ Malaysia, Kuala Lumpur, Malaysia.
[Matveev, V.] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia.
St Petersburg State Polytech Univ, St Petersburg, VA, Russia.
[Azarkin, M.; Dremin, I.; Leonidov, A.] Natl Res Nucl Univ Moscow Engn Phys Inst MEPhI, Moscow, Russia.
[Adzic, P.] Univ Belgrade, Fac Phys, Belgrade 11001, Serbia.
[Colafranceschi, S.] Univ Rome, Fac Ingn, Rome, Italy.
[Rolandi, G.] Scuola Normale Super Pisa, Pisa, Italy.
[Rolandi, G.] Sezione Ist Nazl Fis Nucl, Pisa, Italy.
[Sphicas, P.] Univ Athens, Athens, Greece.
[Naegeli, C.] Paul Scherrer Inst, Villigen, Switzerland.
[Starodumov, A.; Nikitenko, A.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Amsler, C.] Albert Einstein Ctr Fundamental Phys, Bern, Switzerland.
[Bakirci, M. N.; Ozturk, S.; Topakli, H.] Gaziosmanpasa Univ, Tokat, Turkey.
[Cerci, S.; Cerci, D. Sunar; Tali, B.] Adiyam Univ, Adiyaman, Turkey.
[Kangal, E. E.] Mersin Univ, Mersin, Turkey.
[Onengut, G.] Cag Univ, Mersin, Turkey.
[Ozdemir, K.] Piri Reis Univ, Istanbul, Turkey.
[Gamsizkan, H.] Anadolu Univ, Eskisehir, Turkey.
[Isildak, B.] Ozyegin Univ, Istanbul, Turkey.
[Karapinar, G.] Izmir Inst Technol, Izmir, Turkey.
[Ocalan, K.] Necmettin Erbakan Univ, Konya, Turkey.
[Albayrak, E. A.; Ozok, F.] Mimar Sinan Univ, Istanbul, Istanbul, Turkey.
[Kaya, M.] Marmara Univ, Istanbul, Turkey.
[Kaya, O.] Kafkas Univ, Kars, Turkey.
[Yetkin, T.] Yildiz Tekn Univ, Istanbul, Turkey.
[Newbold, D. M.; Lucas, R.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Belyaev, A.] Univ Southampton, Sch Phys & Astron, Southampton, Hants, England.
[Milenovic, P.] Univ Belgrade, Fac Phys, Belgrade 11001, Serbia.
[Milenovic, P.] Vinca Inst Nucl Sci, Belgrade, Serbia.
[Bilki, B.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Mermerkaya, H.] Erzincan Univ, Erzincan, Turkey.
[Bouhali, O.] Texas A&M Univ Qatar, Doha, Qatar.
[Kamon, T.] Kyungpook Natl Univ, Taegu, South Korea.
RP Khachatryan, V (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
RI Tomei, Thiago/E-7091-2012; Kirakosyan, Martin/N-2701-2015; Tinoco
Mendes, Andre David/D-4314-2011; Seixas, Joao/F-5441-2013; Verwilligen,
Piet/M-2968-2014; Vilela Pereira, Antonio/L-4142-2016; Sznajder,
Andre/L-1621-2016; Da Silveira, Gustavo Gil/N-7279-2014; Mora Herrera,
Maria Clemencia/L-3893-2016; Mundim, Luiz/A-1291-2012; Haj Ahmad,
Wael/E-6738-2016; Malakhov, Alexander/D-5702-2016; Calvo Alamillo,
Enrique/L-1203-2014; Hernandez Calama, Jose Maria/H-9127-2015; Cerrada,
Marcos/J-6934-2014; Andreev, Vladimir/M-8665-2015; Perez-Calero
Yzquierdo, Antonio/F-2235-2013; Novaes, Sergio/D-3532-2012; Della Ricca,
Giuseppe/B-6826-2013; Montanari, Alessandro/J-2420-2012; Azarkin,
Maxim/N-2578-2015; Chinellato, Jose Augusto/I-7972-2012; Hobson,
Peter/C-8919-2016; Lokhtin, Igor/D-7004-2012; Menasce,
Dario/A-2168-2016; Paganoni, Marco/A-4235-2016; VARDARLI, Fuat
Ilkehan/B-6360-2013; Manganote, Edmilson/K-8251-2013; Ferguson,
Thomas/O-3444-2014; de Jesus Damiao, Dilson/G-6218-2012; Matorras,
Francisco/I-4983-2015; Dogra, Sunil /B-5330-2013; TUVE',
Cristina/P-3933-2015; Leonidov, Andrey/M-4440-2013; Inst. of Physics,
Gleb Wataghin/A-9780-2017; Dremin, Igor/K-8053-2015; Konecki,
Marcin/G-4164-2015; Vogel, Helmut/N-8882-2014; Benussi,
Luigi/O-9684-2014; Xie, Si/O-6830-2016; Leonardo, Nuno/M-6940-2016; Goh,
Junghwan/Q-3720-2016; Flix, Josep/G-5414-2012; Ruiz,
Alberto/E-4473-2011; Petrushanko, Sergey/D-6880-2012; Govoni,
Pietro/K-9619-2016; Tuominen, Eija/A-5288-2017; Yazgan, Efe/C-4521-2014;
Paulini, Manfred/N-7794-2014
OI Tomei, Thiago/0000-0002-1809-5226; Tinoco Mendes, Andre
David/0000-0001-5854-7699; Seixas, Joao/0000-0002-7531-0842; Vilela
Pereira, Antonio/0000-0003-3177-4626; Sznajder,
Andre/0000-0001-6998-1108; Da Silveira, Gustavo Gil/0000-0003-3514-7056;
Mora Herrera, Maria Clemencia/0000-0003-3915-3170; Mundim,
Luiz/0000-0001-9964-7805; Haj Ahmad, Wael/0000-0003-1491-0446; Calvo
Alamillo, Enrique/0000-0002-1100-2963; Hernandez Calama, Jose
Maria/0000-0001-6436-7547; Cerrada, Marcos/0000-0003-0112-1691;
Perez-Calero Yzquierdo, Antonio/0000-0003-3036-7965; Novaes,
Sergio/0000-0003-0471-8549; Della Ricca, Giuseppe/0000-0003-2831-6982;
Montanari, Alessandro/0000-0003-2748-6373; Chinellato, Jose
Augusto/0000-0002-3240-6270; Hobson, Peter/0000-0002-5645-5253; Menasce,
Dario/0000-0002-9918-1686; Paganoni, Marco/0000-0003-2461-275X;
Ferguson, Thomas/0000-0001-5822-3731; de Jesus Damiao,
Dilson/0000-0002-3769-1680; Matorras, Francisco/0000-0003-4295-5668;
TUVE', Cristina/0000-0003-0739-3153; Attia Mahmoud,
Mohammed/0000-0001-8692-5458; Androsov, Konstantin/0000-0003-2694-6542;
Gallinaro, Michele/0000-0003-1261-2277; Konecki,
Marcin/0000-0001-9482-4841; Vogel, Helmut/0000-0002-6109-3023; Benussi,
Luigi/0000-0002-2363-8889; Xie, Si/0000-0003-2509-5731; Leonardo,
Nuno/0000-0002-9746-4594; Goh, Junghwan/0000-0002-1129-2083; Flix,
Josep/0000-0003-2688-8047; Ruiz, Alberto/0000-0002-3639-0368; Govoni,
Pietro/0000-0002-0227-1301; Tuominen, Eija/0000-0002-7073-7767; Yazgan,
Efe/0000-0001-5732-7950; Paulini, Manfred/0000-0002-6714-5787
FU BMWFW (Austria); FWF (Austria); FNRS (Belgium); FWO (Belgium); CNPq
(Brazil); CAPES (Brazil); FAPERJ (Brazil); FAPESP (Brazil); MES
(Bulgaria); CERN (China); CAS (China); MoST (China); NSFC (China);
COLCIENCIAS (Colombia); MSES (Croatia); CSF (Croatia); RPF (Cyprus);
MoER (Estonia); ERC IUT (Estonia); ERDF (Estonia); Academy of Finland
(Finland); MEC (Finland); HIP (Finland); CEA (France); CNRS/IN2P3
(France); BMBF (Germany); DFG (Germany); HGF (Germany); GSRT (Greece);
OTKA (Hungary); NIH (Hungary); DAE (India); DST (India); IPM (Iran); SFI
(Ireland); INFN (Italy); MSIP (Republic of Korea); NRF (Republic of
Korea); LAS (Lithuania); MOE (Malaysia); UM (Malaysia); CINVESTAV
(Mexico); CONACYT (Mexico); SEP (Mexico); UASLP-FAI (Mexico); MBIE (New
Zealand); PAEC (Pakistan); MSHE (Poland); NSC (Poland); FCT (Portugal);
JINR (Dubna); MON (Russia); RosAtom (Russia); RAS (Russia); RFBR
(Russia); MESTD (Serbia); SEIDI (Spain); CPAN (Spain); Swiss Funding
Agencies (Switzerland); MST (Taipei); ThEPCenter (Thailand); IPST
(Thailand); STAR (Thailand); NSTDA (Thailand); TUBITAK (Turkey); TAEK
(Turkey); NASU (Ukraine); SFFR (Ukraine); STFC (United Kingdom); DOE
(USA); NSF (USA); Marie-Curie program; European Research Council
(European Union); EPLANET (European Union); Leventis Foundation; A. P.
Sloan Foundation; Alexander von Humboldt Foundation; Belgian Federal
Science Policy Office; Fonds pour la Formation a la Recherche dans
l'Industrie et dans l'Agriculture (FRIA-Belgium); Agentschap voor
Innovatie door Wetenschap en Technologie (IWT-Belgium); Ministry of
Education, Youth and Sports (MEYS) of the Czech Republic; Council of
Science and Industrial Research, India; HOMING PLUS program of the
Foundation for Polish Science; European Union, Regional Development
Fund; Compagnia di San Paolo (Torino); Consorzio per la Fisica
(Trieste); MIUR (Italy) [20108T4XTM]; Thalis program; Aristeia program;
EU-ESF; Greek NSRF; National Priorities Research Program by Qatar
National Research Fund; Rachadapisek Sompot Fund for Postdoctoral
Fellowship, Chulalongkorn University (Thailand)
FX We congratulate our colleagues in the CERN accelerator departments for
the excellent performance of the LHC and thank the technical and
administrative staffs at CERN and at other CMS institutes for their
contributions to the success of the CMS effort. We are very grateful to
the TOTEM Collaboration for making their trigger signal available to CMS
and for providing the additional tools required to analyze the acquired
data. In addition, we gratefully acknowledge the computing centers and
personnel of the Worldwide LHC Computing Grid for delivering so
effectively the computing infrastructure essential to our analyses.
Finally, we acknowledge the enduring support for the construction and
operation of the LHC and the CMS detector provided by the following
funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq,
CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and
NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF
(Cyprus); MoER, ERC IUT and ERDF (Estonia); Academy of Finland, MEC, and
HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF
(Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India);
IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of
Korea); LAS (Lithuania); MOE and UM (Malaysia); CINVESTAV, CONACYT, SEP,
and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and
NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, and RFBR
(Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies
(Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA
(Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC
(United Kingdom); and DOE and NSF (USA). Individuals have received
support from the Marie-Curie program and the European Research Council
and EPLANET (European Union); the Leventis Foundation; the A. P. Sloan
Foundation; the Alexander von Humboldt Foundation; the Belgian Federal
Science Policy Office; the Fonds pour la Formation a la Recherche dans
l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor
Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of
Education, Youth and Sports (MEYS) of the Czech Republic; the Council of
Science and Industrial Research, India; the HOMING PLUS program of the
Foundation for Polish Science, cofinanced from the European Union,
Regional Development Fund; the Compagnia di San Paolo (Torino); the
Consorzio per la Fisica (Trieste); MIUR Project No. 20108T4XTM (Italy);
the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek
NSRF; the National Priorities Research Program by Qatar National
Research Fund; and Rachadapisek Sompot Fund for Postdoctoral Fellowship,
Chulalongkorn University (Thailand).
NR 39
TC 0
Z9 0
U1 12
U2 49
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD DEC 1
PY 2015
VL 92
IS 11
AR 112001
DI 10.1103/PhysRevD.92.112001
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA CX7GH
UT WOS:000365869700001
ER
PT J
AU Zhang, ET
He, Y
Grob, P
Fong, YW
Nogales, E
Tjian, R
AF Zhang, Elisa T.
He, Yuan
Grob, Patricia
Fong, Yick W.
Nogales, Eva
Tjian, Robert
TI Architecture of the human XPC DNA repair and stem cell coactivator
complex
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE transcription; stem cells; DNA repair; structure; biochemistry
ID NUCLEOTIDE EXCISION-REPAIR; GROUP-C PROTEIN; TRANSCRIPTION FACTOR IIH;
CARBOXY-TERMINAL DOMAIN; ELECTRON-MICROSCOPY; DAMAGE RECOGNITION;
IN-VIVO; MOLECULAR-MECHANISM; HUMAN CENTRIN-2; BINDING
AB The Xeroderma pigmentosum complementation group C (XPC) complex is a versatile factor involved in both nucleotide excision repair and transcriptional coactivation as a critical component of the NANOG, OCT4, and SOX2 pluripotency gene regulatory network. Here we present the structure of the human holo-XPC complex determined by single-particle electron microscopy to reveal a flexible, ear-shaped structure that undergoes localized loss of order upon DNA binding. We also determined the structure of the complete yeast homolog Rad4 holo-complex to find a similar overall architecture to the human complex, consistent with their shared DNA repair functions. Localized differences between these structures reflect an intriguing phylogenetic divergence in transcriptional capabilities that we present here. Having positioned the constituent subunits by tagging and deletion, we propose a model of key interaction interfaces that reveals the structural basis for this difference in functional conservation. Together, our findings establish a framework for understanding the structure-function relationships of the XPC complex in the interplay between transcription and DNA repair.
C1 [Zhang, Elisa T.; Grob, Patricia; Fong, Yick W.; Nogales, Eva; Tjian, Robert] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Zhang, Elisa T.; Grob, Patricia; Fong, Yick W.; Nogales, Eva; Tjian, Robert] Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Zhang, Elisa T.; Tjian, Robert] Univ Calif Berkeley, CIRM Ctr Excellence, Li Ka Shing Ctr Biomed & Hlth Sci, Berkeley, CA 94720 USA.
[He, Yuan; Nogales, Eva] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94710 USA.
[Tjian, Robert] Howard Hughes Med Inst, Chevy Chase, MD 20815 USA.
RP Tjian, R (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, 229 Stanley Hall, Berkeley, CA 94720 USA.
EM jmlim@berkeley.edu
OI Zhang, Elisa/0000-0003-1294-2372; He, Yuan/0000-0002-1455-3963
FU California Institute for Regenerative Medicine (CIRM) [RB4-06016];
National Institute of General Medical Sciences [GM63072]; CIRM Scholar
(Training Grant) [T1-00007]
FX We thank G. Kemalyan, R. Louder, S. Howes, and D.W. Taylor for
microscope and data processing guidance; T. Houweling for computer
support; G. Dailey for help with expression constructs; and S. Zheng and
C. Inouye for help with in vitro transcription components. We are
grateful to M. Iadanza and T. Gonen for help with initial negative stain
analysis. We thank R. Lesch and R. Schekman for yeast cells for cloning
the yeast Rad4 complex. We thank C. Cattoglio, J.J. Ho, G. E. Katibah,
D. C. Rio, A. Martin, and D. E. Wemmer for valuable discussion. This
work was supported by the California Institute for Regenerative Medicine
(CIRM) Research Grant RB4-06016 (to R.T.) and by the National Institute
of General Medical Sciences (GM63072; to E.N.). E.T.Z. was a National
Science Foundation Graduate Research Fellow and a University of
California Berkeley Distinguished Fellow. Y.W.F. was a CIRM Scholar
(Training Grant T1-00007). R.T. and E.N. are Howard Hughes Medical
Institute (HHMI) Investigators. R.T. is the President of HHMI and the
Director of the Li Ka Shing Center for Biomedical and Health Sciences.
NR 60
TC 2
Z9 2
U1 1
U2 5
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD DEC 1
PY 2015
VL 112
IS 48
BP 14817
EP 14822
DI 10.1073/pnas.1520104112
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA CX8XR
UT WOS:000365988900039
PM 26627236
ER
PT J
AU Yang, WQ
Wittkopp, TM
Li, XB
Warakanont, J
Dubini, A
Catalanotti, C
Kim, RG
Nowack, ECM
Mackinder, LCM
Aksoy, M
Page, MD
D'Adamo, S
Saroussi, S
Heinnickel, M
Johnson, X
Richaud, P
Alric, J
Boehm, M
Jonikas, MC
Benning, C
Merchant, SS
Posewitz, MC
Grossman, AR
AF Yang, Wenqiang
Wittkopp, Tyler M.
Li, Xiaobo
Warakanont, Jaruswan
Dubini, Alexandra
Catalanotti, Claudia
Kim, Rick G.
Nowack, Eva C. M.
Mackinder, Luke C. M.
Aksoy, Munevver
Page, Mark Dudley
D'Adamo, Sarah
Saroussi, Shai
Heinnickel, Mark
Johnson, Xenie
Richaud, Pierre
Alric, Jean
Boehm, Marko
Jonikas, Martin C.
Benning, Christoph
Merchant, Sabeeha S.
Posewitz, Matthew C.
Grossman, Arthur R.
TI Critical role of Chlamydomonas reinhardtii ferredoxin-5 in maintaining
membrane structure and dark metabolism
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE ferredoxin; dark growth; thylakoid lipids; triacylglycerol; redox
regulation
ID GREEN-ALGA; BIOSYNTHESIS; DEFICIENT; MUTANT; PHOTOSYNTHESIS;
IDENTIFICATION; OXIDOREDUCTASE; CHLOROPLASTS; ACCUMULATION; PURIFICATION
AB Photosynthetic microorganisms typically have multiple isoforms of the electron transfer protein ferredoxin, although we know little about their exact functions. Surprisingly, a Chlamydomonas reinhardtii mutant null for the ferredoxin-5 gene (FDX5) completely ceased growth in the dark, with both photosynthetic and respiratory functions severely compromised; growth in the light was unaffected. Thylakoid membranes in dark-maintained fdx5 mutant cells became severely disorganized concomitant with a marked decrease in the ratio of monogalactosyldiacylglycerol to digalactosyldiacylglycerol, major lipids in photosynthetic membranes, and the accumulation of triacylglycerol. Furthermore, FDX5 was shown to physically interact with the fatty acid desaturases Cr Delta 4FAD and CrFAD6, likely donating electrons for the desaturation of fatty acids that stabilize monogalactosyldiacylglycerol. Our results suggest that in photosynthetic organisms, specific redox reactions sustain dark metabolism, with little impact on daytime growth, likely reflecting the tailoring of electron carriers to unique intracellular metabolic circuits under these two very distinct redox conditions.
C1 [Yang, Wenqiang; Wittkopp, Tyler M.; Li, Xiaobo; Catalanotti, Claudia; Kim, Rick G.; Nowack, Eva C. M.; Mackinder, Luke C. M.; Aksoy, Munevver; Saroussi, Shai; Heinnickel, Mark; Johnson, Xenie; Alric, Jean; Jonikas, Martin C.; Grossman, Arthur R.] Carnegie Inst Sci, Dept Plant Biol, Stanford, CA 94305 USA.
[Wittkopp, Tyler M.; Kim, Rick G.] Stanford Univ, Dept Biol, Stanford, CA 94305 USA.
[Warakanont, Jaruswan] Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA.
[Dubini, Alexandra; Boehm, Marko] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Page, Mark Dudley; Merchant, Sabeeha S.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
[D'Adamo, Sarah; Posewitz, Matthew C.] Colorado Sch Mines, Dept Chem & Geochem, Golden, CO 80401 USA.
[Johnson, Xenie; Richaud, Pierre; Alric, Jean] Aix Marseille Univ, CNRS, CEA, F-13108 St Paul Les Durance, France.
[Benning, Christoph] Michigan State Univ, Dept Energy, Plant Res Lab, E Lansing, MI 48824 USA.
[Merchant, Sabeeha S.] Univ Calif Los Angeles, Inst Genom & Prote, Los Angeles, CA 90095 USA.
RP Yang, WQ (reprint author), Carnegie Inst Sci, Dept Plant Biol, 290 Panama St, Stanford, CA 94305 USA.
EM wenqiangy@gmail.com
RI dubini, alexandra /A-7252-2016; Alric, Jean/E-3538-2013;
OI dubini, alexandra /0000-0001-8825-3915; Alric, Jean/0000-0003-3574-2234;
Li, Xiaobo/0000-0003-3951-9646
FU HelioBiotec, EU [1944-32670]; Provence Alpes Cote d'Azur (PACA) [DEB
09-621]; Commissariat a l'Energie Atomique; Office of Biological and
Environmental Research; Genomic Science Program; Office of Science, US
Department of Energy [DE-FG02-07ER64427, DE-FG02-12ER16338,
DE-FG02-12ER16339]; National Science Foundation (NSF) [IOS-1359682]; MCB
[1157231]; NIH [GM42143]; Michigan State University AgBioResearch; NIH
for Jeol [1s10RR02678001, Jeol TEM 1400]
FX We thank Dr. Gilles Peltier for PGRL1 antibodies and Dr. Fabrice Franck
for Nda2 antibodies. The plasmids of pMetYC-DEST and pNX22-DEST and the
yeast strains THY. AP4 and THY. AP5 were kindly provided by Dr. Wolf
Frommer. MIMS experiments (performed by J.A., X.J., and P.R.) were
supported by HelioBiotec, EU Grant 1944-32670, Provence Alpes Cote
d'Azur (PACA) DEB 09-621, and Commissariat a l'Energie Atomique. This
work was supported by the Office of Biological and Environmental
Research, Genomic Science Program, Office of Science, US Department of
Energy Grants DE-FG02-07ER64427 and DE-FG02-12ER16338 (to A.R.G.) and
DE-FG02-12ER16339 (to M.C.P.); National Science Foundation (NSF) Grants
IOS-1359682 (to M.C.J.) and MCB 1157231 (to C.B.); NIH Grant GM42143 (to
S.S.M.); Michigan State University AgBioResearch (to C.B.); as well as
funds from the Carnegie Institution for Science (to A.R.G. and M.C.J.).
J.W. is supported by the Royal Thai Government Scholarship. We
acknowledge NIH Grant 1s10RR02678001 for the Jeol TEM 1400.
NR 40
TC 2
Z9 2
U1 5
U2 25
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD DEC 1
PY 2015
VL 112
IS 48
BP 14978
EP 14983
DI 10.1073/pnas.1515240112
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA CX8XR
UT WOS:000365988900066
PM 26627249
ER
PT J
AU Rubin, BE
Wetmore, KM
Price, MN
Diamond, S
Shultzaberger, RK
Lowe, LC
Curtin, G
Arkin, AP
Deutschbauer, A
Golden, SS
AF Rubin, Benjamin E.
Wetmore, Kelly M.
Price, Morgan N.
Diamond, Spencer
Shultzaberger, Ryan K.
Lowe, Laura C.
Curtin, Genevieve
Arkin, Adam P.
Deutschbauer, Adam
Golden, Susan S.
TI The essential gene set of a photosynthetic organism
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE RB-TnSeq; transposon mutagenesis; Tn-seq; cyanobacteria; photosynthesis
ID SYNECHOCYSTIS SP PCC-6803; TRICARBOXYLIC-ACID CYCLE; GROUP-I INTRONS;
TRANSFER-RNA GENES; SP STRAIN PCC-7942; BLUE-GREEN-ALGAE;
ESCHERICHIA-COLI; SYNECHOCOCCUS-ELONGATUS; PHOTOSYSTEM-II; EVOLUTIONARY
PATTERNS
AB Synechococcus elongatus PCC 7942 is a model organism used for studying photosynthesis and the circadian clock, and it is being developed for the production of fuel, industrial chemicals, and pharmaceuticals. To identify a comprehensive set of genes and intergenic regions that impacts fitness in S. elongatus, we created a pooled library of similar to 250,000 transposon mutants and used sequencing to identify the insertion locations. By analyzing the distribution and survival of these mutants, we identified 718 of the organism's 2,723 genes as essential for survival under laboratory conditions. The validity of the essential gene set is supported by its tight overlap with well-conserved genes and its enrichment for core biological processes. The differences noted between our dataset and these predictors of essentiality, however, have led to surprising biological insights. One such finding is that genes in a large portion of the TCA cycle are dispensable, suggesting that S. elongatus does not require a cyclic TCA process. Furthermore, the density of the transposon mutant library enabled individual and global statements about the essentiality of noncoding RNAs, regulatory elements, and other intergenic regions. In this way, a group I intron located in tRNALeu, which has been used extensively for phylogenetic studies, was shown here to be essential for the survival of S. elongatus. Our survey of essentiality for every locus in the S. elongatus genome serves as a powerful resource for understanding the organism's physiology and defines the essential gene set required for the growth of a photosynthetic organism.
C1 [Rubin, Benjamin E.; Diamond, Spencer; Lowe, Laura C.; Curtin, Genevieve; Golden, Susan S.] Univ Calif San Diego, Div Biol Sci, La Jolla, CA 92093 USA.
[Wetmore, Kelly M.; Price, Morgan N.; Arkin, Adam P.; Deutschbauer, Adam] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Shultzaberger, Ryan K.] Univ Calif San Diego, Kavli Inst Brain & Mind, La Jolla, CA 92093 USA.
[Arkin, Adam P.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
RP Golden, SS (reprint author), Univ Calif San Diego, Div Biol Sci, La Jolla, CA 92093 USA.
EM sgolden@ucsd.edu
RI Arkin, Adam/A-6751-2008; Diamond, Spencer/A-9122-2017
OI Arkin, Adam/0000-0002-4999-2931; Diamond, Spencer/0000-0003-4131-341X
FU National Science Foundation Grant [MCB1244108]; NIH Cell and Molecular
Genetics Training Grant [T32GM00724]; Laboratory-Directed Research and
Development Funding from Lawrence Berkeley National Laboratory
[DE-AC02-05CH11231]; Community Science Project from Joint Genome
Institute; Office of Science of US Department of Energy
[DE-AC02-05CH11231]
FX We thank B. Irvine for his input into metrics for essentiality; Drs. R.
Simkovsky and A. Taton for thoughtful advice on experimental design and
data analysis; A. Pal for assistance in conjugating the library; Drs. J.
Bristow and L. Pennacchio for ideas and assistance at the conception of
the project; Dr. D. Welkie for edits; and Dr. R. Steuer for consultation
on the TCA cycle figure. This research was supported by National Science
Foundation Grant MCB1244108 (to S.S.G.) and NIH Cell and Molecular
Genetics Training Grant T32GM00724. BarSeq mutant fitness data were
supported by Laboratory-Directed Research and Development Funding from
Lawrence Berkeley National Laboratory provided by the Director, Office
of Science of the US Department of Energy Contract DE-AC02-05CH11231 and
a Community Science Project from the Joint Genome Institute (to A.P.A.
and A.D.). The work conducted by the US Department of Energy Joint
Genome Institute, a Department of Energy Office of Science User
Facility, is supported by Office of Science of the US Department of
Energy Contract DE-AC02-05CH11231.
NR 70
TC 13
Z9 13
U1 4
U2 28
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD DEC 1
PY 2015
VL 112
IS 48
BP E6634
EP E6643
DI 10.1073/pnas.1519220112
PG 10
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA CX8XR
UT WOS:000365988900009
PM 26508635
ER
PT J
AU Michelsen, HA
Schulz, C
Smallwood, GJ
Will, S
AF Michelsen, H. A.
Schulz, C.
Smallwood, G. J.
Will, S.
TI Laser-induced incandescence: Particulate diagnostics for combustion,
atmospheric, and industrial applications
SO PROGRESS IN ENERGY AND COMBUSTION SCIENCE
LA English
DT Review
DE Laser-induced incandescence; Particulate diagnostics; Nanoparticles;
Nanoscale heat transfer; Soot; Black carbon
ID SOOT-VOLUME FRACTION; LAMINAR DIFFUSION FLAMES; PARTICLE-SIZE
MEASUREMENTS; BLACK CARBON MEASUREMENTS; ANGLE X-RAY; THERMAL
ACCOMMODATION COEFFICIENTS; POLYCYCLIC AROMATIC-HYDROCARBONS; ABSORPTION
CROSS-SECTION; TIME-RESOLVED LII; FRAGMENTATION FLUORESCENCE
SPECTROSCOPY
AB The understanding of soot formation in combustion processes and the optimization of practical combustion systems require in situ measurement techniques that can provide important characteristics, such as particle concentrations and sizes, under a variety of conditions. Of equal importance are techniques suitable for characterizing soot particles produced from incomplete combustion and emitted into the environment. Additionally, the production of engineered nanoparticles, such as carbon blacks, may benefit from techniques that allow for online monitoring of these processes.
In this paper, we review the fundamentals and applications of laser-induced incandescence (LII) for particulate diagnostics in a variety of fields. The review takes into account two variants of LII, one that is based on pulsed-laser excitation and has been mainly used in combustion diagnostics and emissions measurements, and an alternate approach that relies on continuous-wave lasers and has become increasingly popular for measuring black carbon in environmental applications. We also review the state of the art in the determination of physical parameters central to the processes that contribute to the non-equilibrium nanoscale heat and mass balances of laser-heated particles; these parameters are important for LII-signal analysis and simulation. Awareness of the significance of particle aggregation and coatings has increased recently, and the effects of these characteristics on the LII technique are discussed.
Because of the range of experimental constraints in the variety of applications for which laser-induced incandescence is suited, many implementation approaches have been developed. This review discusses considerations for selection of laser and detection characteristics to address application-specific needs. The benefits of using LII for measurements of a range of nanoparticles in the fields mentioned above are demonstrated with some typical examples, covering simple flames, internal-combustion engines, exhaust emissions, the ambient atmosphere, and nanoparticle production. We also remark on less well-known studies employing LII for particles suspended in liquids.
An important aspect of the paper is to critically assess the improvement in the understanding of the fundamental physical mechanisms at the nanoscale and the determination of underlying parameters; we also identify further research needs in these contexts. Building on this enhanced capability in describing the underlying complex processes, LII has become a workhorse of particulate measurement in a variety of fields, and its utility continues to be expanding. When coupled with complementary methods, such as light scattering, probe-sampling, molecular-beam techniques, and other nanoparticle instrumentation, new directions for research and applications with LII continue to materialize. (C) 2015 Published by Elsevier Ltd.
C1 [Michelsen, H. A.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA.
[Schulz, C.] Univ Duisburg Essen, Inst Combust & Gas Dynam React Fluids IVG, D-47057 Duisburg, Germany.
[Schulz, C.] Univ Duisburg Essen, Ctr Nanointegrat CENIDE, D-47057 Duisburg, Germany.
[Smallwood, G. J.] Natl Res Council Canada, Measurement Sci & Stand, Ottawa, ON K1A 0R6, Canada.
[Will, S.] Univ Erlangen Nurnberg, Lehrstuhl Tech Thermodynam, D-91058 Erlangen, Germany.
[Will, S.] Univ Erlangen Nurnberg, Erlangen Grad Sch Adv Opt Technol SAOT, D-91058 Erlangen, Germany.
RP Will, S (reprint author), Univ Erlangen Nurnberg, Lehrstuhl Tech Thermodynam, Weichselgarten 8, D-91058 Erlangen, Germany.
EM stefan.will@fau.de
RI Schulz, Christof/A-5711-2010; Will, Stefan/A-8899-2017
OI Schulz, Christof/0000-0002-6879-4826; Will, Stefan/0000-0002-1226-0075
FU Sandia Corporation, a Lockheed Martin Company [DE-AC04-94-AL85000];
Sandia Laboratory Directed Research and Development program; U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, the Division of Chemical Sciences, Geosciences, and
Biosciences
FX We thank Drs. Chris Sorensen, Dave Snelling, and Kevin Thomson for
enlightening discussions about light scattering and Maxwell Garnett
Theory, Daniel Strong for the illustrations shown in Figs. 1 and 7, and
Amy Halloran for providing valuable feedback on our manuscript. HAM was
funded by the Sandia Laboratory Directed Research and Development
program to review atmospheric applications of LII and the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, the Division of Chemical Sciences, Geosciences, and
Biosciences to review applications of LII to combustion systems. Sandia
is a multi-program laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the National Nuclear Security Administration under
contract DE-AC04-94-AL85000.
NR 517
TC 18
Z9 18
U1 18
U2 79
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-1285
J9 PROG ENERG COMBUST
JI Prog. Energy Combust. Sci.
PD DEC
PY 2015
VL 51
BP 2
EP 48
DI 10.1016/j.pecs.2015.07.001
PG 47
WC Thermodynamics; Energy & Fuels; Engineering, Chemical; Engineering,
Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA CY2GU
UT WOS:000366227600002
ER
PT J
AU Jang, DH
Anderson-Cook, CM
AF Jang, Dae-Heung
Anderson-Cook, Christine M.
TI Firework Plots for Evaluating the Impact of Outliers and Influential
Observations in Generalized Linear Models
SO QUALITY TECHNOLOGY AND QUANTITATIVE MANAGEMENT
LA English
DT Article
DE 3-D firework plot; influential observations; outliers; pairwise firework
plot matrix
ID REGRESSION
AB Outliers can distort many measures in data analysis and statistical modeling, and influential points can have disproportionate impact on the estimated values of model parameters. Jang and Anderson-Cook (2013) proposed a new set of graphical summaries, called firework plots, as simple tools for evaluating the impact of outliers and influential points in regression. Variations of the plots focus on allowing visualization of the impact on the estimated parameters and variability. In the generalized linear models analysis setting, the impact of changing model parameters is often less transparent than in the linear model setting and variability can be captured with the deviance. Hence, this paper describes how 3-D firework plots and the pairwise firework plot matrix can be used to increase understanding of contributions of individual observations and as a complement to other regression diagnostics techniques in the generalized linear models setting. Using these firework plots, we can find outliers and influential points and their impact on model parameters. We illustrate the information and understanding gain possible with several examples.
C1 [Jang, Dae-Heung] Pukyong Natl Univ, Dept Stat, Busan, South Korea.
[Anderson-Cook, Christine M.] Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM 87545 USA.
RP Anderson-Cook, CM (reprint author), Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM 87545 USA.
EM candcook@lanl.gov
FU Basic Science Research Program through the National Research Foundation
of Korea (NRF) - Ministry of Education [2014R1A1A4A01008238]
FX This research was supported in part by the Basic Science Research
Program through the National Research Foundation of Korea (NRF) funded
by the Ministry of Education (2014R1A1A4A01008238).
NR 10
TC 0
Z9 0
U1 5
U2 5
PU NCTU-NATIONAL CHIAO TUNG UNIV PRESS
PI TAICHUNG
PA NO 100, WENHWA RD, TAICHUNG, 40724 ROC, TAIWAN
SN 1684-3703
EI 1811-4857
J9 QUAL TECHNOL QUANT M
JI Qual. Technol. Quant. Manag.
PD DEC
PY 2015
VL 12
IS 4
BP 423
EP 436
PG 14
WC Engineering, Industrial; Operations Research & Management Science;
Statistics & Probability
SC Engineering; Operations Research & Management Science; Mathematics
GA CX9DK
UT WOS:000366005000001
ER
PT J
AU Mitrofanov, O
Yu, W
Thompson, RJ
Jiang, Y
Greenberg, ZJ
Palmer, J
Brener, I
Pan, W
Berger, C
de Heer, WA
Jiang, Z
AF Mitrofanov, O.
Yu, W.
Thompson, R. J.
Jiang, Y.
Greenberg, Z. J.
Palmer, J.
Brener, I.
Pan, W.
Berger, C.
de Heer, W. A.
Jiang, Z.
TI Terahertz near-field imaging of surface plasmon waves in graphene
structures
SO SOLID STATE COMMUNICATIONS
LA English
DT Article
DE THz near-field microscopy; Surface plasmons; Epitaxial graphene
ID EPITAXIAL GRAPHENE; CONFINEMENT; PROBE
AB We introduce a near-field scanning probe terahertz (THz) microscopy technique for probing surface plasmon waves on graphene. Based on THz time-domain spectroscopy method, this near-field imaging approach is well suited for studying the excitation and evolution of THz plasmon waves on graphene as well as for mapping of graphene properties at THz frequencies on the sub-wavelength scale. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Mitrofanov, O.; Thompson, R. J.] UCL, Elect & Elect Engn, London WC1E 7JE, England.
[Mitrofanov, O.; Brener, I.] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
[Yu, W.; Jiang, Y.; Greenberg, Z. J.; Palmer, J.; Berger, C.; de Heer, W. A.; Jiang, Z.] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA.
[Brener, I.; Pan, W.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Berger, C.] Inst Neel, CNRS, F-38042 Grenoble, France.
RP Mitrofanov, O (reprint author), UCL, Elect & Elect Engn, London WC1E 7JE, England.
EM o.mitrofanov@ucl.ac.uk; zhigang.jiang@physics.gatech.edu
RI Mitrofanov, Oleg/C-1938-2008
OI Mitrofanov, Oleg/0000-0003-3510-2675
FU Royal Society [UF080745]; U.S. Department of Energy (DOE) Office of
Science by SNL [DE-AC04-94AL85000]; NSF [DMR-0820382]; DOE Office of
Basic Energy Sciences through a contract with SNL; EU flagship graphene
[604391]; Laboratory Directed Research and Development project; U.S.
Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX This work was supported by the Royal Society [Grant no. UF080745] and
performed at UCL and at the Center for Integrated Nanotechnologies, an
Office of Science User Facility operated for the U.S. Department of
Energy (DOE) Office of Science by SNL [Contract no. DE-AC04-94AL85000].
Epitaxial graphene growth and device fabrication are carried out at
GaTech, supported by the NSF [DMR-0820382] and the DOE Office of Basic
Energy Sciences through a contract with SNL. C.B. acknowledges partial
funding from the EU flagship graphene [Grant no. 604391]. The work at
SNL was supported by a Laboratory Directed Research and Development
project. Sandia National Laboratories is a multi-program laboratory
managed and operated by Sandia Corporation, a wholly owned subsidiary of
Lockheed Martin Corporation, for the U.S. Department of Energy's
National Nuclear Security Administration under Contract
DE-AC04-94AL85000.
NR 30
TC 7
Z9 7
U1 8
U2 36
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-1098
EI 1879-2766
J9 SOLID STATE COMMUN
JI Solid State Commun.
PD DEC
PY 2015
VL 224
BP 47
EP 52
DI 10.1016/j.ssc.2015.08.013
PG 6
WC Physics, Condensed Matter
SC Physics
GA CY0BE
UT WOS:000366070300011
ER
PT J
AU Martin, M
Martin, RC
Allman, S
Brice, D
Wymore, A
Andre, N
AF Martin, Madhavi
Martin, Rodger C.
Allman, Steve
Brice, Deanne
Wymore, Ann
Andre, Nicolas
TI Quantification of rare earth elements using laser-induced breakdown
spectroscopy
SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
LA English
DT Article
DE Laser-induced breakdown spectroscopy; LIBS; Rare earths; Multielemental
analysis
ID ATOMIC EMISSION-SPECTROMETRY; MUTUAL SPECTRAL INTERFERENCES;
AQUEOUS-SOLUTION; INDUCED PLASMA; SCANDIUM; MATRICES; YTTRIUM; TRACES;
PART; LIBS
AB A study of the optical emission as a function of concentration of laser-ablated yttrium (Y) and of six rare earth elements, europium (Eu), gadolinium (Gd), lanthanum (La), praseodymium (Pr), neodymium (Nd), and samarium (Sm), has been evaluated using the laser-induced breakdown spectroscopy (LIBS) technique. Statistical methodology using multivariate analysis has been used to obtain the sampling errors, coefficient of regression, calibration, and cross-validation of measurements as they relate to the LIBS analysis in graphite-matrix pellets that were doped with elements at several concentrations. Each element (in oxide form) was mixed in the graphite matrix in percentages ranging from 1% to 50% by weight and the LIBS spectra obtained for each composition as well as for pure oxide samples. Finally, a single pellet was mixed with all the elements in equal oxide masses to determine if we can identify the elemental peaks in a mixed pellet This dataset is relevant for future application to studies of fission product content and distribution in irradiated nuclear fuels. These results demonstrate that LIBS technique is inherently well suited for the future challenge of in situ analysis of nuclear materials. These studies also show that LIBS spectral analysis using statistical methodology can provide quantitative results and suggest an approach in future to the far more challenging multielemental analysis of similar to 20 primary elements in high-bumup nuclear reactor fuel. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Martin, Madhavi; Allman, Steve; Wymore, Ann] Div Biol Sci, Oak Ridge, TN 37831 USA.
[Martin, Rodger C.] Fus & Mat Nucl Syst Div, Oak Ridge, TN 37831 USA.
[Brice, Deanne] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Andre, Nicolas] Univ Tennessee, Ctr Renewable Carbon, Knoxville, TN 37996 USA.
RP Martin, M (reprint author), Oak Ridge Natl Lab, Div Biol Sci, Oak Ridge, TN 37831 USA.
RI Allman, Steve/A-9121-2011;
OI Allman, Steve/0000-0001-6538-7048; Martin, Madhavi/0000-0002-6677-2180
FU U.S. Department of Energy [DE-AC05-00OR22725]
FX This research was supported by the U.S. Department of Energy. This
manuscript has been authored by UT-Battelle LLC under Contract No.
DE-AC05-00OR22725 with the U.S. Department of Energy. The United States
Government retains and the publisher, by accepting the article for
publication, acknowledges that the United States Government retains a
non-exclusive, paid-up, irrevocable, worldwide license to publish or
reproduce the published form of this manuscript, or allow others to do
so, for United States Government purposes.
NR 49
TC 6
Z9 6
U1 4
U2 20
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0584-8547
J9 SPECTROCHIM ACTA B
JI Spectroc. Acta Pt. B-Atom. Spectr.
PD DEC 1
PY 2015
VL 114
BP 65
EP 73
DI 10.1016/j.sab.2015.10.005
PG 9
WC Spectroscopy
SC Spectroscopy
GA CY0CC
UT WOS:000366072900011
ER
PT J
AU Gagne, D
French, RL
Narayanan, C
Simonovic, M
Agarwal, PK
Doucet, N
AF Gagne, Donald
French, Rachel L.
Narayanan, Chitra
Simonovic, Miljan
Agarwal, Pratul K.
Doucet, Nicolas
TI Perturbation of the Conformational Dynamics of an Active-Site Loop
Alters Enzyme Activity
SO STRUCTURE
LA English
DT Article
ID NMR RELAXATION DISPERSION; DENATURED RIBONUCLEASE-A; MOLECULAR-DYNAMICS;
SECONDARY-STRUCTURE; ENERGY LANDSCAPES; PROTEIN DYNAMICS; CYCLOPHILIN-A;
MOTIONS; CATALYSIS; ISOMERIZATION
AB The role of internal dynamics in enzyme function is highly debated. Specifically, how small changes in structure far away from the reaction site alter protein dynamics and overall enzyme mechanisms is of wide interest in protein engineering. Using RNase A as a model, we demonstrate that elimination of a single methyl group located >10 angstrom away from the reaction site significantly alters conformational integrity and binding properties of the enzyme. This A109G mutation does not perturb structure or thermodynamic stability, both in the apo and ligand-bound states. However, significant enhancement in conformational dynamics was observed for the bound variant, as probed over nano-to millisecond timescales, resulting in major ligand repositioning. These results illustrate the large effects caused by small changes in structure on long-range conformational dynamics and ligand specificities within proteins, further supporting the importance of preserving wild-type dynamics in enzyme systems that rely on flexibility for function.
C1 [Gagne, Donald; Narayanan, Chitra; Doucet, Nicolas] Univ Quebec, INRS Inst Armand Frappier, Laval, PQ H7V 1B7, Canada.
[French, Rachel L.; Simonovic, Miljan] Univ Illinois, Dept Biochem & Mol Genet, Chicago, IL 60607 USA.
[Agarwal, Pratul K.] Oak Ridge Natl Lab, Computat Biol Inst, Oak Ridge, TN 37830 USA.
[Agarwal, Pratul K.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37830 USA.
[Agarwal, Pratul K.] Univ Tennessee, Dept Biochem Cellular & Mol Biol, Knoxville, TN 37996 USA.
[Doucet, Nicolas] Univ Laval, Quebec Network Res Prot Funct Engn & Applicat, PROTEO, Laval, PQ G1V 0A6, Canada.
[Doucet, Nicolas] McGill Univ, GRASP, Montreal, PQ H3G 0B1, Canada.
RP Doucet, N (reprint author), Univ Quebec, INRS Inst Armand Frappier, 531 Blvd Prairies, Laval, PQ H7V 1B7, Canada.
EM nicolas.doucet@iaf.inrs.ca
OI Simonovic, Miljan/0000-0002-1576-2222
FU National Institute of General Medical Sciences (NIGMS) of the NIH
[R01GM105978]; Natural Sciences and Engineering Research Council of
Canada (NSERC) [RGPIN 402623-2011]; NSERC Alexander Graham Bell Canada
Graduate Scholarship; Fonds de Recherche Quebec - Sante; (FRQS) Research
Scholar Junior 1 Career Award
FX The authors thank Tara Sprules and Sameer Al-Abdul-Wahid of the
Quebec/Eastern Canada High Field NMR Facility (McGill University) for
their excellent technical assistance, in addition to Laurie-Anne Charest
for her help with NMR titration experiments. This work was supported by
the National Institute of General Medical Sciences (NIGMS) of the NIH
under award number R01GM105978 (to N.D. and P.K.A.) and a Natural
Sciences and Engineering Research Council of Canada (NSERC) Discovery
Grant under award number RGPIN 402623-2011 (to N.D.). D.G. was the
recipient of an NSERC Alexander Graham Bell Canada Graduate Scholarship.
N.D. holds a Fonds de Recherche Quebec - Sante; (FRQS) Research Scholar
Junior 1 Career Award.
NR 50
TC 6
Z9 6
U1 2
U2 12
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0969-2126
EI 1878-4186
J9 STRUCTURE
JI Structure
PD DEC 1
PY 2015
VL 23
IS 12
BP 2256
EP 2266
DI 10.1016/j.str.2015.10.011
PG 11
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA CY1MQ
UT WOS:000366171500008
PM 26655472
ER
PT J
AU Das, A
Gerlits, O
Parks, JM
Langan, P
Kovalevsky, A
Heller, WT
AF Das, Amit
Gerlits, Oksana
Parks, Jerry M.
Langan, Paul
Kovalevsky, Andrey
Heller, William T.
TI Protein Kinase A Catalytic Subunit Primed for Action: Time-Lapse
Crystallography of Michaelis Complex Formation
SO STRUCTURE
LA English
DT Article
ID DIVALENT METAL-IONS; RATE-DETERMINING STEP; PHOSPHORYL TRANSFER;
CRYSTAL-STRUCTURE; PEPTIDE INHIBITOR; CONFORMATIONAL-CHANGES;
MOLECULAR-DYNAMICS; ADENOSINE; MECHANISM; SITE
AB The catalytic subunit of the cyclic AMP-dependent protein kinase A (PKAc) catalyzes the transfer of the gamma-phosphate of bound Mg(2)ATP to a serine or threonine residue of a protein substrate. Here, timelapse X-ray crystallography was used to capture a series of complexes of PKAc with an oligopeptide substrate and unreacted Mg(2)ATP, including the Michaelis complex, that reveal important geometric rearrangements in and near the active site preceding the phosphoryl transfer reaction. Contrary to the prevailing view, Mg2+ binds first to the M1 site as a complex with ATP and is followed by Mg2+ binding to the M2 site. Concurrently, the target serine hydroxyl of the peptide substrate rotates away from the active site toward the bulk solvent, which breaks the hydrogen bond with D166. Lastly, the serine hydroxyl of the substrate rotates back toward D166 to form the Michaelis complex with the active site primed for phosphoryl transfer.
C1 [Das, Amit; Gerlits, Oksana; Langan, Paul; Kovalevsky, Andrey; Heller, William T.] Oak Ridge Natl Lab, Biol & Soft Matter Div, Oak Ridge, TN 37831 USA.
[Parks, Jerry M.] Oak Ridge Natl Lab, Biosci Div, UT ORNL Ctr Mol Biophys, Oak Ridge, TN 37831 USA.
RP Das, A (reprint author), Bhabha Atom Res Ctr, Div Solid State Phys, Prot Crystallog Sect, Bombay 400085, Maharashtra, India.
EM amitdas@barc.gov.in; hellerwt@ornl.gov
RI Parks, Jerry/B-7488-2009; Langan, Paul/N-5237-2015;
OI Parks, Jerry/0000-0002-3103-9333; Langan, Paul/0000-0002-0247-3122;
Kovalevsky, Andrey/0000-0003-4459-9142
FU Laboratory Directed Research and Development funding from ORNL;
NIH/NIGMS [1R01GM071939-01]; U.S. Department of Energy office of Basic
Energy Sciences; U.S. Department of Energy [DE-AC05-00OR22725]
FX A.D. and W.T.H. were supported, and O.G. and P.L. were partly supported,
by Laboratory Directed Research and Development funding from ORNL. P.L.
was partly supported by an NIH/NIGMS-funded consortium (Grant
1R01GM071939-01) between ORNL and LBNL to develop computational tools
for neutron protein crystallography. Use of the Advanced Photon Source
was supported by the U.S. Department of Energy office of Basic Energy
Sciences. We are grateful to the staff of the SBC-CAT of the 19-ID
beamline for their support during data collection. This manuscript has
been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725
for the U.S. Department of Energy. The United States Government retains
copyright and the publisher, by accepting the article for publication,
acknowledges that the United States Government retains a non-exclusive,
paid-up, irrevocable, world-wide license to publish or reproduce the
published form of this manuscript, or allow others to do so, for United
States Government purposes. The Department of Energy will provide public
access to these results of federally sponsored research in accordance
with the DOE Public Access Plan
(http://energy.gov/downloads/doe-public-access-plan).
NR 66
TC 0
Z9 0
U1 1
U2 15
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0969-2126
EI 1878-4186
J9 STRUCTURE
JI Structure
PD DEC 1
PY 2015
VL 23
IS 12
BP 2331
EP 2340
DI 10.1016/j.str.2015.10.005
PG 10
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA CY1MQ
UT WOS:000366171500015
PM 26585512
ER
PT J
AU Polat, BD
Eryilmaz, OL
Keles, O
Erdemir, A
Amine, K
AF Polat, B. D.
Eryilmaz, O. L.
Keles, O.
Erdemir, A.
Amine, K.
TI Compositionally graded SiCu thin film anode by magnetron sputtering for
lithium ion battery
SO THIN SOLID FILMS
LA English
DT Article
DE Lithium ion batteries; Anode; Magnetron sputtering; SiCu thin film;
Graded-composition
ID SOLID-STATE AMORPHIZATION; RECHARGEABLE BATTERIES; SILICON ANODES;
GRAPHITE; CARBON
AB Compositionally graded and non-graded composite SiCu thin films were deposited by magnetron sputtering technique on Cu disks for investigation of their potentials in lithiumion battery applications. The compositionally graded thin film electrodes with 30 at.% Cu delivered a 1400 mAh g(-1) capacity with 80% Coulombic efficiency in the first cycle and still retained its capacity at around 600 mAh g(-1) (with 99.9% Coulombic efficiency) even after 100 cycles. On the other hand, the non-graded thin film electrodes with 30 at.% Cu exhibited 1100 mAh g(-1) as the first discharge capacity with 78% Coulombic efficiency but the cycle life of this film degraded very quickly, delivering only 250 mAh g(-1) capacity after 100th cycles. Not only the Cu content but also the graded film thickness were believed to be the main contributors to the much superior performance of the compositionally graded SiCu films. We also believe that the Cu-rich region of the graded film helped reduce internal stress build-up and thus prevented film delamination during cycling. In particular, the decrease of Cu content from interface region to the top of the coating reduced the possibility of stress build-up across the film during cycling, thus leading to a high electrochemical performance.b (C) 2015 Elsevier B.V. All rights reserved.
C1 [Polat, B. D.; Keles, O.] Istanbul Tech Univ, Dept Met & Mat Engn, TR-34469 Istanbul, Turkey.
[Eryilmaz, O. L.; Erdemir, A.] Argonne Natl Lab, Energy Syst Div, Argonne, IL 60439 USA.
[Amine, K.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Polat, BD (reprint author), Istanbul Tech Univ, Dept Met & Mat Engn, TR-34469 Istanbul, Turkey.
EM bpolat@itu.edu.tr; ozgulkeles@itu.edu.tr
FU U.S. Department of Energy, Office of Energy Efficiency and Renewable
Energy [DE-AC02-06CH11357]
FX The authors thank Prof. Dr. Gultekin Goller , Prof. Dr. Mustafa Urgen
Prof. Dr. Servet Timur, Huseyin Sezer, Sevgin Turkeli and Kubra Yumakgil
for their valuable help for SEM, XRD and CV analyses. Work at Argonne
National Laboratory was supported by the U.S. Department of Energy,
Office of Energy Efficiency and Renewable Energy, under Contract
DE-AC02-06CH11357.
NR 19
TC 1
Z9 2
U1 4
U2 14
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0040-6090
J9 THIN SOLID FILMS
JI Thin Solid Films
PD DEC 1
PY 2015
VL 596
BP 190
EP 197
DI 10.1016/j.tsf.2015.09.085
PG 8
WC Materials Science, Multidisciplinary; Materials Science, Coatings &
Films; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Physics
GA CY1YQ
UT WOS:000366204900032
ER
PT J
AU Serrano-Posada, H
Centeno-Leija, S
Rojas-Trejo, SP
Rodriguez-Almazan, C
Stojanoff, V
Rudino-Pinera, E
AF Serrano-Posada, Hugo
Centeno-Leija, Sara
Patricia Rojas-Trejo, Sonia
Rodriguez-Almazan, Claudia
Stojanoff, Vivian
Rudino-Pinera, Enrique
TI X-ray-induced catalytic active-site reduction of a multicopper oxidase:
structural insights into the proton-relay mechanism and O-2-reduction
states
SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
LA English
DT Article
DE copper depletion; dioxygen reduction; laccase; multicopper oxidase;
proton-relay mechanism; radiation damage; X-ray-induced reduction
ID O-O BOND; TRINUCLEAR COPPER CLUSTER; THERMUS-THERMOPHILUS HB27;
CRYSTAL-STRUCTURE; ESCHERICHIA-COLI; MACROMOLECULAR CRYSTALLOGRAPHY;
PEROXIDE INTERMEDIATE; NATIVE INTERMEDIATE; DIOXYGEN REDUCTION;
METALLO-OXIDASE
AB During X-ray data collection from a multicopper oxidase (MCO) crystal, electrons and protons are mainly released into the system by the radiolysis of water molecules, leading to the X-ray-induced reduction of O-2 to 2H(2)O at the trinuclear copper cluster (TNC) of the enzyme. In this work, 12 crystallographic structures of Thermus thermophilus HB27 multicopper oxidase (Tth-MCO) in holo, apo and Hg-bound forms and with different X-ray absorbed doses have been determined. In holo Tth-MCO structures with four Cu atoms, the proton-donor residue Glu451 involved in O-2 reduction was found in a double conformation: Glu451a (similar to 7 angstrom from the TNC) and Glu451b (similar to 4.5 angstrom from the TNC). A positive peak of electron density above 3.5 sigma in an F-o - F-c map for Glu451a O-epsilon 2 indicates the presence of a carboxyl functional group at the side chain, while its significant absence in Glu451b strongly suggests a carboxylate functional group. In contrast, for apo Tth-MCO and in Hg-bound structures neither the positive peak nor double conformations were observed. Together, these observations provide the first structural evidence for a proton-relay mechanism in the MCO family and also support previous studies indicating that Asp106 does not provide protons for this mechanism. In addition, eight composite structures (Tth-MCO-C1-8) with different X-ray-absorbed doses allowed the observation of different O-2-reduction states, and a total depletion of T2Cu at doses higher than 0.2 MGy showed the high susceptibility of this Cu atom to radiation damage, highlighting the importance of taking radiation effects into account in biochemical interpretations of an MCO structure.
C1 [Serrano-Posada, Hugo; Patricia Rojas-Trejo, Sonia; Rodriguez-Almazan, Claudia; Rudino-Pinera, Enrique] Univ Nacl Autonoma Mexico, Inst Biotecnol, Med Mol & Bioproc, Cuernavaca 62210, Morelos, Mexico.
[Serrano-Posada, Hugo; Centeno-Leija, Sara] Univ Nacl Autonoma Mexico, Inst Invest Biomed, Dept Mol Biol & Biotecnol, Mexico City 04510, DF, Mexico.
[Stojanoff, Vivian] Brookhaven Natl Lab, NSLS, Upton, NY 11973 USA.
RP Serrano-Posada, H (reprint author), Univ Nacl Autonoma Mexico, Inst Biotecnol, Med Mol & Bioproc, Ave Univ 2001, Cuernavaca 62210, Morelos, Mexico.
EM hugoserrano@iibiomedicas.unam.mx; rudino@ibt.unam.mx
OI Serrano-Posada, Hugo/0000-0002-7901-475X
FU CONACyT [102370]; National Institute of General Medical Sciences,
National Institute of Health [GM-0080]; PAPIIT [IN209114]
FX HS-P was supported by a Postdoctoral Fellowship from CONACyT. ER-P
acknowledges financial support from CONACyT project No. 102370 and
PAPIIT IN209114. We are also grateful to the staff of beamline X6A at
the BNL NSLS for data-collection facilities, in particular MSc Edwin
Lazo and Dr Jean Jakoncic. The X6A beamline is funded by the National
Institute of General Medical Sciences, National Institute of Health
under agreement GM-0080.
NR 62
TC 1
Z9 1
U1 3
U2 14
PU INT UNION CRYSTALLOGRAPHY
PI CHESTER
PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND
SN 1399-0047
J9 ACTA CRYSTALLOGR D
JI Acta Crystallogr. Sect. D-Biol. Crystallogr.
PD DEC
PY 2015
VL 71
BP 2396
EP 2411
DI 10.1107/S1399004715018714
PN 12
PG 16
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Biophysics; Crystallography
SC Biochemistry & Molecular Biology; Biophysics; Crystallography
GA CX5WT
UT WOS:000365773900004
PM 26627648
ER
PT J
AU Ji, XY
Shen, CP
Riley, WJ
AF Ji, Xinye
Shen, Chaopeng
Riley, William J.
TI Temporal evolution of soil moisture statistical fractal and controls by
soil texture and regional groundwater flow
SO ADVANCES IN WATER RESOURCES
LA English
DT Article
DE Soil moisture statistical fractal; Hydrologic scaling; PAWS plus CLM;
Hysteresis; Groundwater flow
ID DISTRIBUTED HYDROLOGIC MODEL; SURFACE PROCESSES MODEL; SCALING
CHARACTERISTICS; CRITICAL-BEHAVIOR; SPATIAL-PATTERNS; VARIABILITY;
DYNAMICS; FIELDS; SPACE; PARAMETERIZATIONS
AB Soil moisture statistical fractal is an important tool for downscaling remotely-sensed observations and has the potential to play a key role in multi scale hydrologic modeling. The fractal was first introduced two decades ago, but relatively little is known regarding how its scaling exponents evolve in time in response to climatic forcings. Previous studies have neglected the process of moisture re-distribution due to regional groundwater flow, in this study we used a physically-based surface-subsurface processes model and numerical experiments to elucidate the patterns and controls of fractal temporal evolution in two U.S. Midwest basins. Groundwater flow was found to introduce large-scale spatial structure, thereby reducing the scaling exponents (tau), which has implications for the transferability of calibrated parameters to predict tau. However, the groundwater effects depend on complex interactions with other physical controls such as soil texture and land use. The fractal scaling exponents, while in general showing a seasonal mode that correlates with mean moisture content, display hysteresis after storm events that can be divided into three phases, consistent with literature findings: (a) wetting, (b) re-organizing, and (c) dry-down. Modeling experiments clearly show that the hysteresis is attributed to soil texture, whose "patchiness" is the primary contributing factor. We generalized phenomenological rules for the impacts of rainfall, soil texture, groundwater flow, and land use on tau evolution. Grid resolution has a mild influence on the results and there is a strong correlation between predictions of tau from different resolutions. Overall, our results suggest that groundwater flow should be given more consideration in studies of the soil moisture statistical fractal, especially in regions with a shallow water table. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Ji, Xinye; Shen, Chaopeng] Penn State Univ, Dept Civil & Environm Engn, University Pk, PA 16802 USA.
[Riley, William J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Shen, CP (reprint author), Penn State Univ, Dept Civil & Environm Engn, University Pk, PA 16802 USA.
EM xzj102@psu.edu; cshen@engr.psu.edu; wjriley@lbl.gov
RI Riley, William/D-3345-2015
OI Riley, William/0000-0002-4615-2304
FU Office of Biological and Environmental Research of the U.S. Department
of Energy [DE-SC0010620]; U.S. Department of Energy [DE-AC02-05CH11231]
FX This research was supported by Office of Biological and Environmental
Research of the U.S. Department of Energy to Pennsylvania State
University under Contract No. DE-SC0010620; W.J.R. was also supported by
U.S. Department of Energy to Lawrence Berkeley National Laboratory under
Contract No. DE-AC02-05CH11231. Cartographical assistance from Kurt M.
Smithgall is appreciated.
NR 74
TC 4
Z9 4
U1 2
U2 19
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0309-1708
EI 1872-9657
J9 ADV WATER RESOUR
JI Adv. Water Resour.
PD DEC
PY 2015
VL 86
BP 155
EP 169
DI 10.1016/j.advwatres.2015.09.027
PN A
PG 15
WC Water Resources
SC Water Resources
GA CX3TT
UT WOS:000365623000012
ER
PT J
AU Hansen, SK
AF Hansen, Scott K.
TI Effective ADE models for first-order mobile-immobile solute transport:
Limits on validity and modeling implications
SO ADVANCES IN WATER RESOURCES
LA English
DT Article
DE Green's function; Sorption; Mobile-immobile; Dispersion; Anomalous
transport
ID TIME RANDOM-WALK; SURFACE-REACTIONS; MATRIX DIFFUSION; MASS-TRANSFER;
EQUILIBRIUM; SORPTION; SOILS; FORMULATIONS; BEHAVIOR; EROSION
AB Quasi-1D mobile-immobile transport processes which have exponentially distributed random waiting tunes in both mobile and immobile states are common in hydrologic models for example, of transport subject to kinetic sorption). The central limit theorem implies that eventually such transport will be expressible with an effective ADE (i.e. a generalization of the common retardation factor approach with an added Fickian dispersion coefficient accounting for the effect of trapping). Previous works have determined formulae for the value of this coefficient based on the transport properties. However, the time until convergence to Gaussian behavior has not previously been quantified. To this end, exact Green's functions characterizing the transport at all times are derived for the case of pure advection. The Green's functions are expressed in terms of three dimensionless parameters, representing location, time, and capacity coefficient. In the pre-Gaussian regime, a parametric study characterizing concentration profile asymmetry as a function of the capacity coefficient is performed. Next, heuristics are presented in terms of the dimensionless parameters for the time until the effective AIDE adequately reflects reality. For strongly retarded solute, the time until effective ADE validity is found inversely proportional to release (e.g., desorption) rate. The nature of the effective dispersion coefficient is examined, and the possibility of large trapping-driven dispersion even in cases where batch experiments would detect negligible trapping is demonstrated. Collectively, these results call into question reliance on retardation factors derived from batch experiments for many practical transport modeling efforts; knowledge of both the trapping and release kinetics appears essential. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Hansen, Scott K.] Weizmann Inst Sci, Dept Earth & Planetary Sci, IL-76100 Rehovot, Israel.
RP Hansen, SK (reprint author), Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
EM scott.kalev.hansen@gmail.com
OI Hansen, Scott/0000-0001-8022-0123
FU Azrieli Foundation
FX I thank the Azrieli Foundation for a postdoctoral fellowship which in
part made this work possible.
NR 31
TC 1
Z9 1
U1 3
U2 8
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0309-1708
EI 1872-9657
J9 ADV WATER RESOUR
JI Adv. Water Resour.
PD DEC
PY 2015
VL 86
BP 184
EP 192
DI 10.1016/j.advwatres.2015.09.011
PN A
PG 9
WC Water Resources
SC Water Resources
GA CX3TT
UT WOS:000365623000014
ER
PT J
AU Gonzalez-Nicolas, A
Bau, D
Alzraiee, A
AF Gonzalez-Nicolas, Ana
Bau, Domenico
Alzraiee, Ayman
TI Detection of potential leakage pathways from geological carbon storage
by fluid pressure data assimilation
SO ADVANCES IN WATER RESOURCES
LA English
DT Article
DE CO2 storage; Leakage; Ensemble Kalman filter; Ensemble smoother; Normal
score transform
ID ENSEMBLE KALMAN FILTER; HYDRAULIC CONDUCTIVITY; GAUSSIAN ANAMORPHOSIS;
RESERVOIR SIMULATION; INVERSE METHODS; NORTH-ATLANTIC; CO2 STORAGE;
MODEL; SMOOTHER; SYSTEMS
AB One of the main concerns of geological carbon storage (GCS) systems is the risk of leakage through "weak" permeable areas of the sealing formation or caprock. Since the fluid pressure pulse travels faster than the carbon dioxide (CO,) plume across the storage reservoir, the fluid overpressure transmitted into overlying permeable formations through caprock discontinuities is potentially detectable sooner than actual CO2 leakage occurs. In this work, an inverse modeling method based on fluid pressure measurements collected in strata above the target CO2 storage formation is proposed, which aims at identifying the presence, the location, and the extent of possible leakage pathways through the caprock. We combine a three-dimensional subsurface multiphase flow model with ensemble based data assimilation algorithms to recognize potential caprock discontinuities that could undermine the long-term safety of GCS. The goal of this work is to examine and compare the capabilities of data assimilation algorithms such as the ensemble smoother (FS) and the restart ensemble Kalman filter (REnKF) to detect the presence of brine and/or CO2 leakage pathways, potentially in real-time during GCS operations. For the purpose of this study, changes in fluid pressure in the brine aquifer overlying to CO2 storage formation aquifer are hypothetically observed in monitoring bore holes, or provided by time-lapse seismic surveys. Caprock discontinuities are typically characterized locally by higher values of permeability, so that the permeability distribution tends to fit to a non Gaussian bimodal process, which hardly complies with the requirements of the ES and REnKF algorithms. Here, issues related to the non-Gaussianity of the caprock permeability field are investigated by developing and applying a normal score transform procedure. Results suggest that the REnKF is more effective than the ES in characterizing caprock discontinuities. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Gonzalez-Nicolas, Ana] Univ Texas Austin, Jackson Sch Geosci, Bur Econ Geol, Austin, TX 78713 USA.
[Bau, Domenico] Univ Sheffield, Dept Civil & Struct Engn, Sheffield, S Yorkshire, England.
[Alzraiee, Ayman] Sandia Natl Labs, Carlsbad, NM USA.
RP Gonzalez-Nicolas, A (reprint author), Univ Texas Austin, Jackson Sch Geosci, Bur Econ Geol, Austin, TX 78713 USA.
EM anagna@gmail.com
RI Gonzalez-Nicolas Alvarez, Ana/M-9309-2015
OI Gonzalez-Nicolas Alvarez, Ana/0000-0003-2869-8255
FU U.S. Department of Energy, National Energy Technology Laboratory (DOE)
[FE0001830]
FX This research was supported by the U.S. Department of Energy, National
Energy Technology Laboratory (DOE Grant FE0001830). The research
conducted was also made possible with the support of Schlumberger Ltd.,
who kindly donated the reservoir simulation software suites PETREL and
ECLIPSE, together with training opportunities to their use.
NR 68
TC 0
Z9 0
U1 3
U2 10
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0309-1708
EI 1872-9657
J9 ADV WATER RESOUR
JI Adv. Water Resour.
PD DEC
PY 2015
VL 86
BP 366
EP 384
DI 10.1016/j.advwatres.2015.10.006
PN B
PG 19
WC Water Resources
SC Water Resources
GA CX3TY
UT WOS:000365623500010
ER
PT J
AU Coleman, MA
Sasi, SP
Onufrak, J
Natarajan, M
Manickam, K
Schwab, J
Muralidharan, S
Peterson, LE
Alekseyev, YO
Yan, XH
Goukassian, DA
AF Coleman, Matthew A.
Sasi, Sharath P.
Onufrak, Jillian
Natarajan, Mohan
Manickam, Krishnan
Schwab, John
Muralidharan, Sujatha
Peterson, Leif E.
Alekseyev, Yuriy O.
Yan, Xinhua
Goukassian, David A.
TI Low-dose radiation affects cardiac physiology: gene networks and
molecular signaling in cardiomyocytes
SO AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY
LA English
DT Article
DE cardiac physiology; cardiomyocyte; radiation biology; gene expression
molecular signaling
ID ACTIVATED PROTEIN-KINASES; COMPLETE ATRIOVENTRICULAR-BLOCK;
TRANSCRIPTION FACTOR GATA4; ATOMIC-BOMB SURVIVORS; INDUCED
HEART-DISEASE; IONIZING-RADIATION; ENDOTHELIAL DYSFUNCTION;
MYOCARDIAL-INFARCTION; EXPRESSION CHANGES; GAMMA-IRRADIATION
AB There are 160,000 cancer patients worldwide treated with particle radiotherapy (RT). With the advent of proton, and high (H) charge (Z) and energy (E) HZE ionizing particle RT, the cardiovascular diseases risk estimates are uncertain. In addition, future deep space exploratory-type missions will expose humans to unknown but low doses of particle irradiation (IR). We examined molecular responses using transcriptome profiling in left ventricular murine cardiomyocytes isolated from mice that were exposed to 90 cGy, 1 GeV proton (H-1) and 15 cGy, 1 GeV/nucleon iron (Fe-56) over 28 days after exposure. Unsupervised clustering analysis of gene expression segregated samples according to the IR response and time after exposure, with Fe-56-IR showing the greatest level of gene modulation. H-1-IR showed little differential transcript modulation. Network analysis categorized the major differentially expressed genes into cell cycle, oxidative responses, and transcriptional regulation functional groups. Transcriptional networks identified key nodes regulating expression. Validation of the signal transduction network by protein analysis and gel shift assay showed that particle IR clearly regulates a long-lived signaling mechanism for ERK1/2, p38 MAPK signaling and identified NFATc4, GATA4, STAT3, and NF-kappa B as regulators of the response at specific time points. These data suggest that the molecular responses and gene expression to Fe-56-IR in cardiomyocytes are unique and long-lasting. Our study may have significant implications for the efforts of National Aeronautics and Space Administration to develop heart disease risk estimates for astronauts and for patients receiving conventional and particle RT via identification of specific HZE-IR molecular markers.
C1 [Coleman, Matthew A.] Calif State Univ Sacramento, Davis Sch Med, Radiat Oncol, Sacramento, CA 95819 USA.
[Coleman, Matthew A.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Sasi, Sharath P.; Onufrak, Jillian; Schwab, John; Muralidharan, Sujatha; Yan, Xinhua; Goukassian, David A.] GeneSys Res Inst, Cardiovasc Res Ctr, Boston, MA USA.
[Natarajan, Mohan; Manickam, Krishnan] Univ Texas Hlth Sci Ctr San Antonio, San Antonio, TX 78229 USA.
[Peterson, Leif E.] Houston Methodist Res Inst, Ctr Biostat, Houston, TX USA.
[Alekseyev, Yuriy O.; Goukassian, David A.] Boston Univ, Sch Med, Dept Pathol & Lab Med, Boston, MA 02215 USA.
[Yan, Xinhua; Goukassian, David A.] Tufts Univ, Sch Med, Boston, MA 02111 USA.
RP Goukassian, DA (reprint author), Tufts Univ, GeneSys Res Inst, Sch Med, 720 Cambridge St,CBR 422, Brighton, MA 02135 USA.
EM david.goukassian@tufts.edu
OI Coleman, Matthew/0000-0003-1389-4018; Peterson, Leif/0000-0002-1187-0883
FU NASA [NNX11AD22G, NCC 9-58-298]; American Heart Association (AHA)
[14GRNT18860032, 10GRNT4710003]; US Department of Energy (DOE)
[DE-AC52-07NA27344]; US DOE Low Dose Radiation Research Program
[KP110202]; National Heart, Lung, and Blood Institute [HL-106098];
National Space Biomedical Research Institute (NSBRI) [CA02802]
FX This work was supported by NASA under Grant NNX11AD22G and American
Heart Association (AHA) Grant 14GRNT18860032 to D. A. Goukassian. This
work was also supported in part by the US Department of Energy (DOE)
under contract no. DE-AC52-07NA27344, with funding from the US DOE Low
Dose Radiation Research Program Grant KP110202 to M. A. Coleman, and by
AHA Grant 10GRNT4710003 and National Heart, Lung, and Blood Institute
Grant HL-106098 to X. Yan. This work was also supported by National
Space Biomedical Research Institute (NSBRI) Grant CA02802 through NASA
NCC 9-58-298 to M. Natarajan.
NR 82
TC 2
Z9 2
U1 1
U2 6
PU AMER PHYSIOLOGICAL SOC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 USA
SN 0363-6135
EI 1522-1539
J9 AM J PHYSIOL-HEART C
JI Am. J. Physiol.-Heart Circul. Physiol.
PD DEC 1
PY 2015
VL 309
IS 11
BP H1947
EP H1963
DI 10.1152/ajpheart.00050.2015
PG 17
WC Cardiac & Cardiovascular Systems; Physiology; Peripheral Vascular
Disease
SC Cardiovascular System & Cardiology; Physiology
GA CX7MR
UT WOS:000365886500015
PM 26408534
ER
PT J
AU Bolmatov, D
Zav'yalov, D
Zhernenkov, M
Musaev, ET
Cai, YQ
AF Bolmatov, Dima
Zav'yalov, Dmitry
Zhernenkov, Mikhail
Musaev, Edvard T.
Cai, Yong Q.
TI Unified phonon-based approach to the thermodynamics of solid, liquid and
gas states
SO ANNALS OF PHYSICS
LA English
DT Article
DE Phononic gaps; Phonon excitations; Thermodynamic limits; Thermodynamic
boundary; Unified phonon theory; Phonon localisation
ID IRREVERSIBLE-PROCESSES; FAST SOUND; STATISTICAL-MECHANICS;
SYMMETRY-BREAKING; DYNAMICAL MODEL; HARD-SPHERES; FREE-ENERGY; FLUIDS;
WATER; HEAT
AB We introduce a unified approach to states of matter (solid, liquid and gas) and describe the thermodynamics of the pressure-temperature phase diagram in terms of phonon excitations. We derive the effective Hamiltonian with low-energy cutoff in two transverse phonon polarizations (phononic band gaps) by breaking the symmetry in phonon interactions. Further, we construct the statistical mechanics of states of aggregation employing the Debye approximation. The introduced formalism covers the Debye theory of solids, the phonon theory of liquids, and thermodynamic limits such as the Dulong-Petit thermodynamic limit (CV 3k(B)), the ideal gas limit (c(v) = 3/2k(B)) and the new thermodynamic limit (c(v) = 2k(B)), dubbed here the Frenkel line thermodynamic limit. We discuss the phonon propagation and localization effects in liquids above and below the Frenkel line, and explain the "fast sound" phenomenon. As a test for our theory we calculate velocity-velocity autocorrelation and pair distribution functions within the Green-Kubo formalism. We show the consistency, between dynamics of phonons and pair correlations in the framework of the unified approach. New directions towards advancements in phononic band gaps engineering, hypersound manipulation technologies and exploration of exotic behaviour of fluids relevant to geo- and planetary sciences are discussed. The presented results are equally important both for practical implications and for fundamental research. Published by Elsevier Inc.
C1 [Bolmatov, Dima; Zhernenkov, Mikhail; Cai, Yong Q.] Brookhaven Natl Lab, Natl Synchrotron Light Source 2, Upton, NY 11973 USA.
[Zav'yalov, Dmitry] Volgograd State Tech Univ, Volgograd 400005, Russia.
[Musaev, Edvard T.] Natl Res Univ Higher, Sch Econ, Fac Math, Moscow 117312, Russia.
RP Bolmatov, D (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source 2, Upton, NY 11973 USA.
EM d.bolmatov@gmail.com
RI Zavyalov, Dmitriy/N-7609-2015; Musaev, Edvard/E-4531-2017;
OI Musaev, Edvard/0000-0002-1796-1794; Zhernenkov,
Mikhail/0000-0003-3604-0672
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-SC00112704]
FX The work at the National Synchrotron Light Source-II, Brookhaven
National Laboratory, was supported by the U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences, under Contract No.
DE-SC00112704. We are indebted to Stefano Ruffo, Yang Zhang, Salvatore
Torquato, Oleg Kogan, Ivar Martin, Yugang Zhang and Oleg Gang for
stimulating discussions.
NR 64
TC 6
Z9 6
U1 4
U2 19
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0003-4916
EI 1096-035X
J9 ANN PHYS-NEW YORK
JI Ann. Phys.
PD DEC
PY 2015
VL 363
BP 221
EP 242
DI 10.1016/j.aop.2015.09.018
PG 22
WC Physics, Multidisciplinary
SC Physics
GA CX6TP
UT WOS:000365834900013
ER
PT J
AU Zhang, LB
Yan, LS
Wang, ZM
Laskar, DD
Swita, MS
Cort, JR
Yang, B
AF Zhang, Libing
Yan, Lishi
Wang, Zheming
Laskar, Dhrubojyoti D.
Swita, Marie S.
Cort, John R.
Yang, Bin
TI Characterization of lignin derived from water-only and dilute acid
flowthrough pretreatment of poplar wood at elevated temperatures
SO BIOTECHNOLOGY FOR BIOFUELS
LA English
DT Article
DE Hot water; Dilute acid; Flowthrough pretreatment; Poplar; Lignin;
Characterization
ID COMPRESSED-HOT-WATER; CORN STOVER; ENZYMATIC DIGESTIBILITY; BIOFUEL
PRODUCTION; CELLULOSE; SWITCHGRASS; SUGAR; HEMICELLULOSE; BIOSYNTHESIS;
DEGRADATION
AB Background: Flowthrough pretreatment of biomass is a critical step in lignin valorization via conversion of lignin derivatives to high-value products, a function vital to the economic efficiency of biorefinery plants. Comprehensive understanding of lignin behaviors and solubilization chemistry in aqueous pretreatment such as water-only and dilute acid flowthrough pretreatment is of fundamental importance to achieve the goal of providing flexible platform for lignin utilization.
Results: In this study, the effects of flowthrough pretreatment conditions on lignin separation from poplar wood were reported as well as the characteristics of three sub-sets of lignin produced from the pretreatment, including residual lignin in pretreated solid residues (ReL), recovered insoluble lignin in pretreated liquid (RISL), and recovered soluble lignin in pretreatment liquid (RSL). Both the water-only and 0.05 % (w/w) sulfuric acid pretreatments were performed at temperatures from 160 to 270 degrees C on poplar wood in a flowthrough reactor system for 2-10 min. Results showed that water-only flowthrough pretreatment primarily removed syringyl (S units). Increased temperature and/or the addition of sulfuric acid enhanced the removal of guaiacyl (G units) compared to water-only pretreatments at lower temperatures, resulting in nearly complete removal of lignin from the biomass. Results also suggested that more RISL was recovered than ReL and RSL in both dilute acid and water-only flowthrough pretreatments at elevated temperatures. NMR spectra of the RISL revealed significant beta-O-4 cleavage, alpha-beta deoxygenation to form cinnamyl-like end groups, and slight beta-5 repolymerization in both water-only and dilute acid flowthrough pretreatments.
Conclusions: Elevated temperature and/or dilute acid greatly enhanced lignin removal to almost 100 % by improving G unit removal besides S unit removal in flowthrough system. Only mild lignin structural modification was caused by flowthrough pretreatment. A lignin transformation pathway was proposed to explain the complexity of the lignin structural changes during hot water and dilute acid flowthrough pretreatment.
C1 [Zhang, Libing; Yan, Lishi; Laskar, Dhrubojyoti D.; Yang, Bin] Washington State Univ, Dept Biol Syst Engn, Bioprod Sci & Engn Lab, Richland, WA 99354 USA.
[Wang, Zheming; Cort, John R.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99354 USA.
[Swita, Marie S.] Pacific NW Natl Lab, Bioprod Sci & Engn Lab, Richland, WA 99354 USA.
RP Cort, JR (reprint author), Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99354 USA.
EM John.Cort@pnnl.gov; binyang@tricity.wsu.edu
RI Wang, Zheming/E-8244-2010
OI Wang, Zheming/0000-0002-1986-4357
FU DARPA Young Faculty Award [N66001-11-1-414]; DOE-EERE Award
[DE-EE0006112]; Sun Grant-DOT Award [T0013G-A-Task 8]; National Science
Foundation Award [1258504]; Department of Energy's Office of Biological
and Environmental Research (BER)
FX We are grateful to the DARPA Young Faculty Award # N66001-11-1-414,
DOE-EERE Award # DE-EE0006112, The Sun Grant-DOT Award # T0013G-A-Task
8, and the National Science Foundation Award # 1258504 for funding this
research. Part of this work was conducted at the William R. Wiley
Environmental Molecular Sciences Laboratory (EMSL), a national
scientific user facility located at the Pacific Northwest National
Laboratory (PNNL) and sponsored by the Department of Energy's Office of
Biological and Environmental Research (BER). The authors would
especially like to thank Drs. Yunqiao Pu and Art J. Ragauskas from
Georgia Institute of Technology for GPC support. We also thank Dr.
Hongfei Wang and Ms. Marie S. Swita for insightful discussions.
NR 49
TC 2
Z9 2
U1 3
U2 29
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1754-6834
J9 BIOTECHNOL BIOFUELS
JI Biotechnol. Biofuels
PD DEC 1
PY 2015
VL 8
AR 203
DI 10.1186/s13068-015-0377-x
PG 14
WC Biotechnology & Applied Microbiology; Energy & Fuels
SC Biotechnology & Applied Microbiology; Energy & Fuels
GA CX6AY
UT WOS:000365784800006
PM 26677398
ER
PT J
AU Cavanaugh, NR
Gershunov, A
AF Cavanaugh, Nicholas R.
Gershunov, Alexander
TI Probabilistic tail dependence of intense precipitation on spatiotemporal
scale in observations, reanalyses, and GCMs
SO CLIMATE DYNAMICS
LA English
DT Article
DE Daily intense precipitation; Extremes; Heavy tails; Extreme value
theory; Scale dependence
ID STOCHASTIC WEATHER GENERATORS
AB Daily precipitation variability as observed from weather stations is heavy tailed at most locations around the world. It is thought that diversity in precipitation-causing weather events is fundamental in producing heavy-tailed distributions, and it arises from theory that at least one of the precipitation types contributing to a heavy-tailed climatological record must also be heavy-tailed. Precipitation is a multi-scale phenomenon with a rich spatial structure and short decorrelation length and timescales; the spatiotemporal scale at which precipitation is observed is thus an important factor when considering its statistics and extremes. In this study, we examine the spatiotemporal scaling behavior of intense precipitation from point-scale to large grid cells and from 1 day to 4 weeks over the entire globe. We go on to validate the current generation of historically-forced climate models and reanalyses against observational data at consistent spatial scales. Our results demonstrate that the prevalence and magnitude of heavy tails in observations decrease when moving to lower spatiotemporal resolutions, as is consistent with stochastic theory. Reanalyses and climate models generally reproduce large, synoptic scale distribution classifications, but struggle to reproduce the statistics in regions that are strongly affected by mesoscale phenomena. We discuss these results in relation to physically consistent atmospheric regimes. We conclude with a global view of precipitation distribution type at daily resolution as calculated from the best-performing reanalysis, the Climate Forecast System Reanalysis.
C1 [Cavanaugh, Nicholas R.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
[Cavanaugh, Nicholas R.; Gershunov, Alexander] Univ Calif San Diego, Scripps Inst Oceanog, Climate Atmospher Sci & Phys Oceanog Div, La Jolla, CA 92093 USA.
RP Cavanaugh, NR (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, 1 Cyclotron Rd,Mail Stop 74R316C, Berkeley, CA 94720 USA.
EM nrcavanaugh@lbl.gov
FU NSF [OCE0960770, OCE1419306]; DOI via the Southwest Climate Science
Center; NOAA via the RISA program through the California and Nevada
Applications Center; California Energy Commission PIER Program
FX Cavanaugh was supported in part by NSF grants OCE0960770 and OCE1419306.
A portion of the computing was accomplished using Yellowstone resources
available through NCAR/UCAR. We thank Mary Tyree for archiving CMIP5
data sets and making them available locally. This work contributes to
research supported by DOI via the Southwest Climate Science Center, by
NOAA via the RISA program through the California and Nevada Applications
Center, and by the California Energy Commission PIER Program. We
acknowledge the World Climate Research Programme's Working Group on
Coupled Modelling, which is responsible for CMIP, and we thank the
climate modeling groups who produced the models listed in Table 2 for
making available their model output. For CMIP the U.S. Department of
Energy's Program for Climate Model Diagnosis and Intercomparison
provides coordinating support and led development of software
infrastructure in partnership with the Global Organization for Earth
System Science Portals. Gridded observational data as well as individual
results for reanalyses and climate models discussed in this paper can be
made available by request. Finally, we thank two anonymous reviewers
whose comments helped improve the quality of the manuscript.
NR 34
TC 0
Z9 0
U1 0
U2 9
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0930-7575
EI 1432-0894
J9 CLIM DYNAM
JI Clim. Dyn.
PD DEC
PY 2015
VL 45
IS 11-12
BP 2965
EP 2975
DI 10.1007/s00382-015-2517-1
PG 11
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CX0WU
UT WOS:000365418900001
ER
PT J
AU Liu, W
Lu, J
Leung, LR
Xie, SP
Liu, ZY
Zhu, J
AF Liu, Wei
Lu, Jian
Leung, L. Ruby
Xie, Shang-Ping
Liu, Zhengyu
Zhu, Jiang
TI The de-correlation of westerly winds and westerly-wind stress over the
Southern Ocean during the Last Glacial Maximum
SO CLIMATE DYNAMICS
LA English
DT Article
DE Southern Westerly Winds; Westerly wind stress; Antarctic sea ice; LGM;
PMIP3/CMIP5
ID SEA-ICE; HYDROLOGICAL CYCLE; MODEL SIMULATIONS; CLIMATE; RECORDS;
POLLEN; ANTARCTICA; VEGETATION; PACIFIC; AMERICA
AB Motivated by indications from paleo-evidence, this paper investigates the changes of the Southern Westerly Winds (SWW) and westerly-wind stress between the Last Glacial Maximum (LGM) and pre-industrial in the PMIP3/CMIP5 simulations, highlighting the role of Antarctic sea ice in modulating the wind effect on ocean. Particularly, a de-correlation occurs between the changes in SWW and westerly-wind stress, caused primarily by an equatorward expansion of winter Antarctic sea ice that undermines the efficacy of wind in generating stress over the liquid ocean. Such de-correlation may reflect the LGM condition in reality, in view of the fact that the model which simulates this condition has most fidelity in simulating modern SWW and Antarctic sea ice. Therein two models stand out for their agreements with paleo-evidence regarding the change of SWW and the westerly-wind stress. They simulate strengthened and poleward-migrated LGM SWW in the atmosphere, consistent with the indications from dust records. Whilst in the ocean, they well capture an equatorward-shifted pattern of the observed oceanic front shift, with most pronounced equatorward-shifted westerly wind stress during the LGM.
C1 [Liu, Wei; Xie, Shang-Ping] Univ Calif San Diego, Scripps Inst Oceanog, CASPO, La Jolla, CA 92093 USA.
[Liu, Wei; Lu, Jian; Leung, L. Ruby] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Liu, Zhengyu; Zhu, Jiang] Univ Wisconsin, Nelson Ctr Climat Res, Dept Atmospher & Ocean Sci, Madison, WI USA.
[Liu, Zhengyu] Peking Univ, Sch Phys, LaCOAS, Beijing 100871, Peoples R China.
RP Liu, W (reprint author), Univ Calif San Diego, Scripps Inst Oceanog, CASPO, 9500 Gilman Dr, La Jolla, CA 92093 USA.
EM wel109@ucsd.edu
RI Xie, Shang-Ping/C-1254-2009;
OI Xie, Shang-Ping/0000-0002-3676-1325; Zhu, Jiang/0000-0002-0908-5130
FU NSF [AGS-1249145]; Office of Science of the US Department of Energy as
part of the Regional and Global Climate Modeling program; DOE
[DE-AC05-76RL01830]
FX This work is primarily supported by NSF AGS-1249145. Jian Lu and L. Ruby
Leung were partly supported by the Office of Science of the US
Department of Energy as part of the Regional and Global Climate Modeling
program. The Pacific Northwest National Laboratory is operated for DOE
by Battelle Memorial Institute under contract DE-AC05-76RL01830.
NR 46
TC 3
Z9 3
U1 3
U2 11
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0930-7575
EI 1432-0894
J9 CLIM DYNAM
JI Clim. Dyn.
PD DEC
PY 2015
VL 45
IS 11-12
BP 3157
EP 3168
DI 10.1007/s00382-015-2530-4
PG 12
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CX0WU
UT WOS:000365418900013
ER
PT J
AU Lu, YQ
Jin, JM
Kueppers, LM
AF Lu, Yaqiong
Jin, Jiming
Kueppers, Lara M.
TI Crop growth and irrigation interact to influence surface fluxes in a
regional climate-cropland model (WRF3.3-CLM4crop)
SO CLIMATE DYNAMICS
LA English
DT Article
DE WRF; CLM; Dynamic crop growth; Irrigation; Climate; Surface energy flux
ID CENTRAL UNITED-STATES; LAND-USE CHANGE; ATMOSPHERIC RESPONSE; STOMATAL
CONDUCTANCE; CANOPY TEMPERATURE; SEED-GERMINATION; BOUNDARY-LAYER; PART
II; IMPACT; PRECIPITATION
AB In this study, we coupled Version 4.0 of the Community Land Model that includes crop growth and management (CLM4crop) into the Weather Research and Forecasting (WRF) model Version 3.3 to better represent interactions between climate and agriculture. We evaluated the performance of the coupled model (WRF3.3-CLM4crop) by comparing simulated crop growth and surface climate to multiple observational datasets across the continental United States. The results showed that although the model with dynamic crop growth overestimated leaf area index (LAI) and growing season length, interannual variability in peak LAI was improved relative to a model with prescribed crop LAI and growth period, which has no environmental sensitivity. Adding irrigation largely improved daily minimum temperature but the RMSE is still higher over irrigated land than non-irrigated land. Improvements in climate variables were limited by an overall model dry bias. However, with addition of an irrigation scheme, soil moisture and surface energy flux partitioning were largely improved at irrigated sites. Irrigation effects were sensitive to crop growth: the case with prescribed crop growth underestimated irrigation water use and effects on temperature and overestimated soil evaporation relative to the case with dynamic crop growth in moderately irrigated regions. We conclude that studies examining irrigation effects on weather and climate using coupled climate-land surface models should include dynamic crop growth and realistic irrigation schemes to better capture land surface effects in agricultural regions.
C1 [Lu, Yaqiong; Kueppers, Lara M.] Univ Calif Merced, Sierra Nevada Res Inst, Merced, CA 95348 USA.
[Jin, Jiming] Utah State Univ, Dept Watershed Sci, Logan, UT 84322 USA.
[Jin, Jiming] Utah State Univ, Dept Plants Soil & Climate, Logan, UT 84322 USA.
[Kueppers, Lara M.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Lu, YQ (reprint author), Univ Calif Merced, Sierra Nevada Res Inst, Merced, CA 95348 USA.
EM ylu9@ucmerced.edu
RI Kueppers, Lara/M-8323-2013
OI Kueppers, Lara/0000-0002-8134-3579
FU UC Merced; USDA AFRI [2012-68002-19872]
FX We thank for Samuel Levis for providing the CLM4CNCrop code, Marc Fisher
for providing the ARM SGP Main site LAI observations, UC Merced for
summer GRC fellowships, and an anonymous reviewer for helpful comments.
The work was also supported by USDA AFRI (Award Number
2012-68002-19872).
NR 81
TC 8
Z9 8
U1 4
U2 23
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0930-7575
EI 1432-0894
J9 CLIM DYNAM
JI Clim. Dyn.
PD DEC
PY 2015
VL 45
IS 11-12
BP 3347
EP 3363
DI 10.1007/s00382-015-2543-z
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CX0WU
UT WOS:000365418900024
ER
PT J
AU Wright, DB
Knutson, TR
Smith, JA
AF Wright, Daniel B.
Knutson, Thomas R.
Smith, James A.
TI Regional climate model projections of rainfall from US landfalling
tropical cyclones
SO CLIMATE DYNAMICS
LA English
DT Article
DE Tropical cyclones; Extreme rainfall; Floods; Climate impacts; Climate
modeling; Dynamical downscaling
ID STOCHASTIC STORM TRANSPOSITION; EXTRATROPICAL TRANSITION; UNITED-STATES;
INTENSE PRECIPITATION; CMIP5 MODELS; PART I; FREQUENCY; TRMM;
HURRICANES; EVOLUTION
AB The eastern United States is vulnerable to flooding from tropical cyclone rainfall. Understanding how both the frequency and intensity of this rainfall will change in the future climate is a major challenge. One promising approach is the dynamical downscaling of relatively coarse general circulation model results using higher-resolution regional climate models (RCMs). In this paper, we examine the frequency of landfalling tropical cyclones and associated rainfall properties over the eastern United States using Zetac, an 18-km resolution RCM designed for modeling Atlantic tropical cyclone activity. Simulations of 1980-2006 tropical cyclone frequency and rainfall intensity for the months of August-October are compared against results from previous studies and observation-based datasets. The 1980-2006 control simulations are then compared against results from three future climate scenarios: CMIP3/A1B (late twenty-first century) and CMIP5/RCP4.5 (early and late twenty-first century). In CMIP5 early and late twenty-first century projections, the frequency of occurrence of post-landfall tropical cyclones shows little net change over much of the eastern U.S. despite a decrease in frequency over the ocean. This reflects a greater landfalling fraction in CMIP5 projections, which is not seen in CMIP3-based projections. Average tropical cyclone rain rates over land within 500 km of the storm center increase by 8-17 % in the future climate projections relative to control. This is at least as much as expected from the Clausius-Clapeyron relation, which links a warmer atmosphere to greater atmospheric water vapor content. Over land, the percent enhancement of area-averaged rain rates from a given tropical cyclone in the warmer climate is greater for larger averaging radius (300-500 km) than near the storm, particularly for the CMIP3 projections. Although this study does not focus on attribution, the findings are broadly consistent with historical tropical cyclone rainfall changes documented in a recent observational study. The results may have important implications for future flood risks from tropical cyclones.
C1 [Wright, Daniel B.] NASA Hydrol Sci, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Wright, Daniel B.] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA.
[Knutson, Thomas R.] NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08542 USA.
[Smith, James A.] Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA.
RP Wright, DB (reprint author), NASA Hydrol Sci, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA.
EM daniel.b.wright@nasa.gov
FU Willis Research Network; National Oceanic and Atmospheric Administration
Cooperative Institute for Climate Sciences [NOAA CICS NA08OAR4320752];
National Science Foundation [CBET-1058027]; NASA Postdoctoral Program
FX This work was partially funded by the Willis Research Network, the
National Oceanic and Atmospheric Administration Cooperative Institute
for Climate Sciences (Grant NOAA CICS NA08OAR4320752), and the the
National Science Foundation (Grant CBET-1058027) and the NASA
Postdoctoral Program. We would like to thank Joseph Sirutis of NOAA GFDL
for providing climate model data, Joshua Roundy of Princeton University
and NASA GSFC for preparing the NLDAS rainfall data, and Timothy Marchok
and Baoqiang Xiang of NOAA GFDL for their thoughtful comments.
NR 64
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U2 20
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0930-7575
EI 1432-0894
J9 CLIM DYNAM
JI Clim. Dyn.
PD DEC
PY 2015
VL 45
IS 11-12
BP 3365
EP 3379
DI 10.1007/s00382-015-2544-y
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CX0WU
UT WOS:000365418900025
ER
PT J
AU Huggel, C
Stone, D
Eicken, H
Hansen, G
AF Huggel, Christian
Stone, Daithi
Eicken, Hajo
Hansen, Gerrit
TI Potential and limitations of the attribution of climate change impacts
for informing loss and damage discussions and policies
SO CLIMATIC CHANGE
LA English
DT Article
ID AUSTRALIAN BUSHFIRE 1925-2009; BUILDING DAMAGE; SOUTH-AMERICA; WEATHER
EVENT; POPULATION; FATALITIES; COLOMBIA; LOCATION; EXTREMES; PERMAFROST
AB The issue of climate related loss and damage (L&D) has re-emerged and gained significant traction in international climate policy in recent years. However, many aspects remain unclear, including how aspects of liability and compensation in relation with L&D will be treated under the UNFCCC, human rights and environmental law. Furthermore, the type of scientific evidence required to link climate change impacts for each of these L&D mechanisms needs to be clarified. Here we analyze to which degree different types of scientific evidence can inform L&D discussions and policies. We distinguish between (i) L&D observation, (ii) understanding causation, and (iii) linking L&D to anthropogenic emissions through attribution studies. We draw on three case studies from Australia, Colombia and Alaska to demonstrate the relevance of the different types of evidence. We then discuss the potential and limitations of these types of scientific evidence, in particular attribution, for informing current L&D discussions and policies. Attribution (iii) sets the highest bar, but also provides the most complete set of information to support adaptation, risk reduction and L&D policies. However, rather than suggesting that attribution is a necessary requirement for L&D policies we want to highlight its potential for facilitating a more thematically structured, and thus hopefully a more constructive, policy and justice discussion.
C1 [Huggel, Christian] Univ Zurich, Dept Geog, CH-8057 Zurich, Switzerland.
[Stone, Daithi] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Eicken, Hajo] Univ Alaska Fairbanks, Int Arctic Res Ctr, Fairbanks, AK 99775 USA.
[Hansen, Gerrit] Potsdam Inst Climate Impact Res, Potsdam, Germany.
RP Huggel, C (reprint author), Univ Zurich, Dept Geog, Winterthurerstr 190, CH-8057 Zurich, Switzerland.
EM christian.huggel@geo.uzh.ch
RI Eicken, Hajo/M-6901-2016;
OI Stone, Daithi/0000-0002-2518-100X
FU Executive Board; Faculty of Science of the University of Zurich; U.S.
Department of Energy, Office of Science, Office of Biological and
Environmental Research's Regional and Global Climate Modelling Program
[DE-AC02-05CH11231]; German Federal Ministry of Education and Research
FX The authors would like to thank Ivo Wallimann-Helmer for discussions
which improved the focus of the paper. Collaboration and discussions
with colleagues of the IPCC WGII AR5, chapter 18, have set an important
basis for this paper. CH was supported by strategic funds by the
Executive Board and Faculty of Science of the University of Zurich. DAS
was supported by the U.S. Department of Energy, Office of Science,
Office of Biological and Environmental Research's Regional and Global
Climate Modelling Program under contract number DE-AC02-05CH11231. GH
was supported by the German Federal Ministry of Education and Research.
We appreciate the insightful comments by Mike Hulme and two anonymous
reviewers as well as those of the guest editors, Dominic Roser and
Markus Ohndorf, which helped restructuring and improving the paper. We
also extend thanks to Andre Wehrli for discussions on loss and damage.
NR 68
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PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0165-0009
EI 1573-1480
J9 CLIMATIC CHANGE
JI Clim. Change
PD DEC
PY 2015
VL 133
IS 3
BP 453
EP 467
DI 10.1007/s10584-015-1441-z
PG 15
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA CX2HW
UT WOS:000365518700010
ER
PT J
AU Calvin, K
Rose, S
Wise, M
McJeon, H
Clarke, L
Edmonds, J
AF Calvin, Katherine
Rose, Steven
Wise, Marshall
McJeon, Haewon
Clarke, Leon
Edmonds, Jae
TI Global climate, energy, and economic implications of international
energy offsets programs
SO CLIMATIC CHANGE
LA English
DT Article
ID CLEAN DEVELOPMENT MECHANISM; TECHNOLOGY-TRANSFER; MITIGATION; POWER
AB We demonstrate and apply methods for assessing global, system-scale effects on energy and greenhouse emissions of offset programs that explicitly consider the rules by which energy-based offset credits are awarded. We compare our approach to idealized calculations in which all regions, including those without mitigation obligations, face a common carbon tax. We find a substantial gap between potential reductions in emissions and those realized in a suite of hypothetical offset assignment protocols as well as between offset creation and system-scales emissions mitigation, even when project-scale additionality and compliance issues are absent and baselines are known with certainty. In the worst cases, seemingly reasonable rules were counterproductive-i.e. increased global carbon emissions, despite strictly meeting additionality and baseline requirements. But, even when we modified the rules for creating offsets to reflect more closely implementation practices, there remained a large gap between potential and realized mitigation. This difference is systemic and traces to the basic nature of offsets. Offsets subsidize the deployment of non-emitting technologies instead of penalizing the use of emitting technologies. As a consequence, offsets lower the cost of energy, and encourage greater use energy rather than its conservation. Thus, even in well-crafted programs, it is impossible to capture the full economic potential because the program lacks a means by which to engage energy conservation. We demonstrate that while offsets programs reduce the cost to regions with emissions caps, they may achieve this result at the expense of reduced global emissions mitigation.
C1 [Calvin, Katherine; Wise, Marshall; McJeon, Haewon; Clarke, Leon; Edmonds, Jae] Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD USA.
[Rose, Steven] Elect Power Res Inst, Washington, DC USA.
RP Edmonds, J (reprint author), Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD USA.
EM jae@pnnl.gov
FU Electric Power Research Institute
FX The authors are grateful for research support provided by Electric Power
Research Institute. The authors also appreciate helpful comments on an
earlier draft of this paper by David Victor and Michael Wara and by two
anonymous reviewers. The views and opinions expressed in this paper are
those of the authors alone.
NR 22
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U2 7
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0165-0009
EI 1573-1480
J9 CLIMATIC CHANGE
JI Clim. Change
PD DEC
PY 2015
VL 133
IS 4
BP 583
EP 596
DI 10.1007/s10584-015-1482-3
PG 14
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA CX2IB
UT WOS:000365519200003
ER
PT J
AU Hao, GC
Zhuang, QL
Zhu, Q
He, YJ
Jin, ZO
Shen, WJ
AF Hao, Guangcun
Zhuang, Qianlai
Zhu, Qing
He, Yujie
Jin, Zhenong
Shen, Weijun
TI Quantifying microbial ecophysiological effects on the carbon fluxes of
forest ecosystems over the conterminous United States
SO CLIMATIC CHANGE
LA English
DT Article
ID NET PRIMARY PRODUCTION; SOIL ORGANIC-CARBON; EARTH SYSTEM MODELS;
TERRESTRIAL ECOSYSTEMS; COMMUNITY STRUCTURE; AMERIFLUX DATA;
BIOGEOCHEMICAL MODEL; GLOBAL OPTIMIZATION; THERMAL ADAPTATION;
CLIMATE-CHANGE
AB There is a pressing need to develop earth system models (ESMs), in which ecosystem processes are adequately represented, to quantify carbon-climate feedbacks. In particular, explicit representation of the effects of microbial activities on soil organic carbon decomposition has been slow in ESM development. Here we revised an existing Q(10)-based heterotrophic respiration (R-H) algorithm of a large-scale biogeochemical model, the Terrestrial Ecosystem Model (TEM), by incorporating the algorithms of Dual Arrhenius and Michaelis-Menten kinetics and microbial-enzyme interactions. The microbial physiology enabled model (MIC-TEM) was then applied to quantify historical and future carbon dynamics of forest ecosystems in the conterminous United States. Simulations indicate that warming has a weaker positive effect on R-H than that traditional Q(10) model has. Our results demonstrate that MIC-TEM is superior to traditional TEM in reproducing historical carbon dynamics. More importantly, the future trend of soil carbon accumulation simulated with MIC-TEM is more reasonable than TEM did and is generally consistent with soil warming experimental studies. The revised model estimates that regional GPP is 2.48 Pg C year(-1) (2.02 to 3.03 Pg C year(-1)) and NEP is 0.10 Pg C year(-1) (-0.20 to 0.32 Pg C year(-1)) during 2000-2005. Both models predict that the conterminous United States forest ecosystems are carbon sinks under two future climate scenarios during the 21st century. This study suggests that terrestrial ecosystem models should explicitly consider the microbial ecophysiological effects on soil carbon decomposition to adequately quantify forest ecosystem carbon fluxes at regional scales.
C1 [Hao, Guangcun; Shen, Weijun] Chinese Acad Sci, South China Bot Garden, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Guangdong, Peoples R China.
[Hao, Guangcun; Zhuang, Qianlai; Zhu, Qing; He, Yujie; Jin, Zhenong] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA.
[Zhuang, Qianlai] Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA.
[Zhu, Qing] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Zhuang, QL (reprint author), Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA.
EM qzhuang@purdue.edu
RI Shen, Weijun/G-2942-2010; ZHU, QING/G-2433-2015; He, Yujie/E-2514-2017
OI Shen, Weijun/0000-0001-7574-8839; ZHU, QING/0000-0003-2441-944X; He,
Yujie/0000-0001-8261-5399
FU NSF [0919331, NSF-0630319]; NASA Land Use and Land Cover Change program
[NASA-NNX09AI26G]; Department of Energy [DE-FG02-08ER64599]; NF Division
of Information & Intelligent Systems [NSF-1028291]
FX We acknowledge the AmeriFlux community to provide the eddy flux data.
This research is supported with projects funded to Q.Z., including NSF
projects (DEB-#0919331; NSF-0630319), the NASA Land Use and Land Cover
Change program (NASA-NNX09AI26G), Department of Energy
(DE-FG02-08ER64599), and the NF Division of Information & Intelligent
Systems (NSF-1028291).
NR 48
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U1 6
U2 17
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0165-0009
EI 1573-1480
J9 CLIMATIC CHANGE
JI Clim. Change
PD DEC
PY 2015
VL 133
IS 4
BP 695
EP 708
DI 10.1007/s10584-015-1490-3
PG 14
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA CX2IB
UT WOS:000365519200011
ER
PT J
AU Akinosho, H
Rydzak, T
Borole, A
Ragauskas, A
Close, D
AF Akinosho, Hannah
Rydzak, Thomas
Borole, Abhijeet
Ragauskas, Arthur
Close, Dan
TI Toxicological challenges to microbial bioethanol production and
strategies for improved tolerance
SO ECOTOXICOLOGY
LA English
DT Article
DE Toxicology; Biofuels; Bioethanol; Fermentation; Process engineering
ID ETHANOLOGENIC ESCHERICHIA-COLI; CHAIN ORGANIC-ACIDS;
SACCHAROMYCES-CEREVISIAE; CLOSTRIDIUM-THERMOCELLUM; FERMENTATION
INHIBITORS; SOLVENT TOLERANCE; HEAT-SHOCK; LIGNOCELLULOSIC BIOMASS;
ALDEHYDE DEHYDROGENASE; ALCOHOL-DEHYDROGENASE
AB Bioethanol production output has increased steadily over the last two decades and is now beginning to become competitive with traditional liquid transportation fuels due to advances in engineering, the identification of new production host organisms, and the development of novel biodesign strategies. A significant portion of these efforts has been dedicated to mitigating the toxicological challenges encountered across the bioethanol production process. From the release of potentially cytotoxic or inhibitory compounds from input feedstocks, through the metabolic co-synthesis of ethanol and potentially detrimental byproducts, and to the potential cytotoxicity of ethanol itself, each stage of bioethanol production requires the application of genetic or engineering controls that ensure the host organisms remain healthy and productive to meet the necessary economies required for large scale production. In addition, as production levels continue to increase, there is an escalating focus on the detoxification of the resulting waste streams to minimize their environmental impact. This review will present the major toxicological challenges encountered throughout each stage of the bioethanol production process and the commonly employed strategies for reducing or eliminating potential toxic effects.
C1 [Akinosho, Hannah; Ragauskas, Arthur] Georgia Inst Technol, Renewable BioProd Inst, Atlanta, GA 30332 USA.
[Akinosho, Hannah; Rydzak, Thomas; Ragauskas, Arthur] Oak Ridge Natl Lab, BioEnergy Sci Ctr, Oak Ridge, TN 37831 USA.
[Rydzak, Thomas; Borole, Abhijeet; Close, Dan] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
[Borole, Abhijeet; Ragauskas, Arthur] Univ Tennessee, Dept Biomol & Chem Engn, Knoxville, TN USA.
[Borole, Abhijeet] Univ Tennessee, Bredesen Ctr Interdisciplinary Res & Educ, Knoxville, TN USA.
RP Close, D (reprint author), Oak Ridge Natl Lab, Biosci Div, POB 2008,MS6342, Oak Ridge, TN 37831 USA.
EM closedm@ornl.gov
RI Close, Dan/A-4417-2012;
OI Rydzak, Thomas/0000-0002-5176-3222; Borole,
Abhijeet/0000-0001-8423-811X; Ragauskas, Arthur/0000-0002-3536-554X
FU Georgia Institute of Technology, Renewable BioProducts Institute Paper
Science and Technology Fellowship; Oak Ridge National Laboratory
Laboratory Directed Research and Development grant; Bioenergy Science
Center (BESC), U.S. Department of Energy Bioenergy Research Center -
Office of Biological and Environmental Research in the DOE Office of
Science; U.S. Government [DE-AC05-00OR22725]
FX Funding for this review was provided by the Georgia Institute of
Technology, Renewable BioProducts Institute Paper Science and Technology
Fellowship and an Oak Ridge National Laboratory Laboratory Directed
Research and Development grant. Additional funding was provided by the
Bioenergy Science Center (BESC), which is a U.S. Department of Energy
Bioenergy Research Center supported by the Office of Biological and
Environmental Research in the DOE Office of Science. This manuscript has
been authored by a contractor of the U.S. Government under contract
DE-AC05-00OR22725.
NR 141
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U1 8
U2 27
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0963-9292
EI 1573-3017
J9 ECOTOXICOLOGY
JI Ecotoxicology
PD DEC
PY 2015
VL 24
IS 10
SI SI
BP 2156
EP 2174
DI 10.1007/s10646-015-1543-4
PG 19
WC Ecology; Environmental Sciences; Toxicology
SC Environmental Sciences & Ecology; Toxicology
GA CX5QV
UT WOS:000365758200014
PM 26423392
ER
PT J
AU Basnyat, P
Sopori, B
Devayajanam, S
Shet, S
Binns, J
Appel, J
Ravindra, NM
AF Basnyat, Prakash
Sopori, Bhushan
Devayajanam, Srinivas
Shet, Sudhakar
Binns, Jeff
Appel, Jesse
Ravindra, Nuggehalli M.
TI Experimental study to separate surface and bulk contributions of
light-induced degradation in crystalline silicon solar cells
SO EMERGING MATERIALS RESEARCH
LA English
DT Article
DE annealing; degradation; interface
ID SI; LIFETIME; PASSIVATION
AB In this paper, investigations toward understanding the bulk and surface components of light-induced degradation (LID) in low-iron crystalline silicon (Si) solar cells are explored. The bulk effects, arising from boron-oxygen defects, are determined by comparing degradation of cell parameters and their thermal recovery, with that of the minority-carrier lifetime (tau) in sister wafers. It is found that the lifetime of wafer, t, is recovered fully after annealing, but cell efficiency is recovered partially. It is also shown that cells having SiN:H coating experience a surface degradation (ascribed to surface recombination). The surface LID is seen as an increase in the q/2kT component of the dark saturation current (J(02)). The surface LID does not recover fully upon annealing and is attributed to degradation linked to the SiN:H-Si interface. This behavior is also exhibited by multi-crystalline silicon cells that have very low oxygen content and do not show any bulk degradation.
C1 [Basnyat, Prakash; Sopori, Bhushan; Devayajanam, Srinivas; Shet, Sudhakar] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Basnyat, Prakash; Devayajanam, Srinivas; Shet, Sudhakar; Ravindra, Nuggehalli M.] New Jersey Inst Technol, Newark, NJ 07102 USA.
[Binns, Jeff] SunEdison, Portland, OR USA.
[Appel, Jesse] SunEdison, St Peters, MO USA.
RP Basnyat, P (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM bhushan.sopori@nrel.gov
FU US Department of Energy [DE-AC36-08GO28308]; National Renewable Energy
Laboratory
FX This work was supported by the US Department of Energy under contract
number DE-AC36-08GO28308 with National Renewable Energy Laboratory.
NR 28
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U1 2
U2 11
PU ICE PUBLISHING
PI WESTMINISTER
PA INST CIVIL ENGINEERS, 1 GREAT GEORGE ST, WESTMINISTER SW 1P 3AA, ENGLAND
SN 2046-0147
EI 2046-0155
J9 EMERG MATER RES
JI Emerg. Mater. Res.
PD DEC
PY 2015
VL 4
IS 2
BP 239
EP 246
DI 10.1680/emr.15.00041
PG 8
WC Materials Science, Multidisciplinary
SC Materials Science
GA CX5DA
UT WOS:000365720600011
ER
PT J
AU Yang, HC
Donovan, SM
Young, SJ
Greenblatt, JB
Desroches, LB
AF Yang, Hung-Chia
Donovan, Sally M.
Young, Scott J.
Greenblatt, Jeffery B.
Desroches, Louis-Benoit
TI Assessment of household appliance surveys collected with Amazon
Mechanical Turk
SO ENERGY EFFICIENCY
LA English
DT Article
DE Appliances; Surveys; Amazon Mechanical Turk; RECS; Post-stratification
weighting
ID QUALITY
AB Energy researchers need data on residential appliances to make effective recommendations for reducing energy consumption. For some products, however, traditional data sources do not have sufficient detail. Online surveys can provide a less expensive alternative for data collection, but the accuracy of these surveys is still unclear. Here, we compare the results of Amazon Mechanical Turk online surveys of refrigerators, freezers, televisions, and ceiling fans to the nationwide Residential Energy Consumption Survey (RECS) deployed by the US Energy Information Administration. To account for differences in demographic distributions between the online survey results and the general population, we weighted the results using standard cell weighting and raking techniques, as well as a combination of these, termed "hybrid." The weighted results gave a distribution of product ownership that was reasonably close to RECS, albeit with small, statistically significant differences in some cases. The cell weighting method provided a slightly better agreement with RECS than the other two approaches. We recommend online surveys as an efficient and cost-effective way of gathering in-home use data on appliances that are not adequately covered by existing data sources.
C1 [Yang, Hung-Chia; Young, Scott J.; Greenblatt, Jeffery B.; Desroches, Louis-Benoit] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Yang, HC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, One Cyclotron Rd, Berkeley, CA 94720 USA.
EM hcyang@lbl.gov
FU US Department of Energy, Building Technologies Office
FX Bereket Beraki, Sarah K. Price, Stacy Pratt, and Henry Willem provided
an invaluable contribution to this project by managing the collection of
Amazon Mechanical Turk data. Andrea Alstone, Mia Forbes Pirie, Mohan
Ganeshalingam, Karina Garbesi, Samantha Infeld, Colleen Kantner, Erik
Page, Alex Valenti, and Vagelis Vossos provided assistance in developing
and executing the surveys. Gregory Rosenquist and Alex Lekov provided
high-level support and encouragement. We thank the US Department of
Energy, Building Technologies Office, for financial support.
NR 41
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U1 1
U2 2
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1570-646X
EI 1570-6478
J9 ENERG EFFIC
JI Energy Effic.
PD DEC
PY 2015
VL 8
IS 6
BP 1063
EP 1075
DI 10.1007/s12053-015-9334-6
PG 13
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Environmental
Studies
SC Science & Technology - Other Topics; Energy & Fuels; Environmental
Sciences & Ecology
GA CX0XW
UT WOS:000365421800003
ER
PT J
AU Henze, GP
Pless, S
Petersen, A
Long, N
Scambos, AT
AF Henze, Gregor P.
Pless, Shanti
Petersen, Anya
Long, Nicholas
Scambos, Alexander T.
TI Control limits for building energy end use based on frequency analysis
and quantile regression
SO ENERGY EFFICIENCY
LA English
DT Article
DE Energy analytics; Energy dashboard; Predictive energy modeling; Energy
control limits
AB For buildings designed to meet aggressive energy goals, there is a need for tools to assist in the monitoring and maintenance of performance once the building is in operation. In particular, dashboard visualizations that show real-time and historic end use energy consumption alongside expected performance are powerful tools for both occupant engagement and the identification of operational issues. This article focuses on two related approaches to calculating upper and lower control limits for acceptable ranges of end use, which use a combination of modeled and measured usage data to generate realistic energy-conservative control limits. The first approach centers on the analysis of frequency distributions for end use consumption as functions of a main effect variable, while the second approach uses multivariate quantile regression based on principal components to generate control limits from all available measured variables.
C1 [Henze, Gregor P.; Pless, Shanti; Petersen, Anya; Long, Nicholas] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Henze, Gregor P.; Scambos, Alexander T.] Univ Colorado, Boulder, CO 80309 USA.
RP Henze, GP (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM gregor.henze@colorado.edu
NR 25
TC 0
Z9 0
U1 2
U2 4
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1570-646X
EI 1570-6478
J9 ENERG EFFIC
JI Energy Effic.
PD DEC
PY 2015
VL 8
IS 6
BP 1077
EP 1092
DI 10.1007/s12053-015-9342-6
PG 16
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Environmental
Studies
SC Science & Technology - Other Topics; Energy & Fuels; Environmental
Sciences & Ecology
GA CX0XW
UT WOS:000365421800004
ER
PT J
AU Carvallo, JP
Larsen, PH
Goldman, CA
AF Carvallo, Juan Pablo
Larsen, Peter H.
Goldman, Charles A.
TI Estimating customer electricity and fuel savings from projects installed
by the US ESCO industry
SO ENERGY EFFICIENCY
LA English
DT Article
DE Energy service companies; Electricity savings; Energy efficiency
ID SERVICE COMPANY INDUSTRY; DEVELOPING-COUNTRIES; ENERGY; MARKET;
EMISSIONS; EVOLUTION; BUSINESS; FOSTER; POLICY; SIZE
AB The US energy service company (ESCO) industry has a well-established track record of delivering substantial energy and dollar savings in the public and institutional facilities sector, typically through the use of energy savings performance contracts (ESPC). The ESCO industry has the opportunity to play an important role in achieving demand-side energy efficiency under the US Environmental Protection Agency's (EPA) proposed Clean Power Plan. The EPA considered demand-side energy efficiency as a compliance strategy for proposed greenhouse gas (GHG) emissions standards under section 111 (d) of the Clean Air Act. To date, there has been little or no research in the public domain to estimate electricity or fuel savings for the entire US ESCO industry. Estimating these savings levels is a foundational step in order to determine total avoided GHG emissions from demand-side energy efficiency measures installed by US ESCOs. We find that on average, 66 % of total energy savings are in the form of electricity, but that in more comprehensive projects, almost 50 % of savings are produced from fuel resources. Overall, we estimate that active US ESCO industry projects generated about 34 TWh of electricity savings in 2012. About 15 TWh of these electricity savings were for municipal, local, and state government facilities; universities/colleges; K-12 schools; and healthcare (MUSH) facilities customers who did not rely on utility customer-funded energy efficiency programs. We extend the electricity analysis to estimate total energy savings and find that the US ESCO industry saved similar to 224 million MMBtu in 2012 or similar to 1 % of the total US commercial building energy consumption.
C1 [Carvallo, Juan Pablo; Larsen, Peter H.; Goldman, Charles A.] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Carvallo, Juan Pablo] Univ Calif Berkeley, Renewable & Appropriate Energy Lab, Berkeley, CA 94720 USA.
[Carvallo, Juan Pablo] Univ Calif Berkeley, Energy & Resources Grp, Berkeley, CA 94720 USA.
[Larsen, Peter H.] Stanford Univ, Management Sci & Engn Dept, Sch Engn, Stanford, CA 94305 USA.
RP Carvallo, JP (reprint author), Ernest Orlando Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,MS 90R4000, Berkeley, CA 94720 USA.
EM jpcarvallo@lbl.gov
FU US Department of Energy Office of Energy Efficiency and Renewable
Energy, Weatherization and Intergovernmental Programs
[DE-AC02-05CH11231]
FX The work described in this article was funded by the US Department of
Energy Office of Energy Efficiency and Renewable Energy, Weatherization
and Intergovernmental Programs under Contract No. DE-AC02-05CH11231.
NR 28
TC 0
Z9 0
U1 4
U2 11
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1570-646X
EI 1570-6478
J9 ENERG EFFIC
JI Energy Effic.
PD DEC
PY 2015
VL 8
IS 6
BP 1251
EP 1261
DI 10.1007/s12053-015-9405-8
PG 11
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Environmental
Studies
SC Science & Technology - Other Topics; Energy & Fuels; Environmental
Sciences & Ecology
GA CX0XW
UT WOS:000365421800014
ER
PT J
AU Feng, H
Zhang, WG
Liu, WL
Yu, LZ
Qian, Y
Wang, J
Wang, JJ
Eng, C
Liu, CJ
Jones, KW
Tappero, R
AF Feng, Huan
Zhang, Weiguo
Liu, Wenliang
Yu, Lizhong
Qian, Yu
Wang, Jun
Wang, Jia-Jun
Eng, Christopher
Liu, Chang-Jun
Jones, Keith W.
Tappero, Ryan
TI Synchrotron micro-scale study of trace metal transport and distribution
in Spartina alterniflora root system in Yangtze River intertidal zone
SO ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
LA English
DT Article
DE Spartina alterniflora; Tracemetals; Synchrotron radiation technique;
Rhizosphere root system; Transport; Yangtze River estuary
ID HEAVY-METAL; TYPHA-LATIFOLIA; IRON PLAQUE; PHRAGMITES-AUSTRALIS;
SOLUTION CULTURE; FE-PLAQUE; IN-SITU; CONTAMINATED SOILS;
ASTER-TRIPOLIUM; AQUATIC PLANTS
AB This study is focused on micro-scale measurement of metal (Ca, Cl, Fe, K, Mn, Cu, Pb, and Zn) distributions in Spartina alterniflora root system. The root samples were collected in the Yangtze River intertidal zone in July 2013. Synchrotron X-ray fluorescence (XRF), computed microtomography (CMT), and X-ray absorption near-edge structure (XANES) techniques, which provide micro-meter scale analytical resolution, were applied to this study. Although it was found that the metals of interest were distributed in both epidermis and vascular tissue with the varying concentrations, the results showed that Fe plaque was mainly distributed in the root epidermis. Other metals (e.g., Cu, Mn, Pb, and Zn) were correlated with Fe in the epidermis possibly due to scavenge by Fe plaque. Relatively high metal concentrations were observed in the root hair tip. This micro-scale investigation provides insights of understanding the metal uptake and spatial distribution as well as the function of Fe plaque governing metal transport in the root system.
C1 [Feng, Huan; Qian, Yu] Montclair State Univ, Dept Earth & Environm Studies, Montclair, NJ 07043 USA.
[Zhang, Weiguo; Liu, Wenliang; Yu, Lizhong] E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China.
[Wang, Jun; Wang, Jia-Jun; Eng, Christopher; Tappero, Ryan] Brookhaven Natl Lab, Photon Sci Directorate, Upton, NY 11973 USA.
[Liu, Chang-Jun; Jones, Keith W.] Brookhaven Natl Lab, Biol Environm & Climate Sci Dept, Upton, NY 11973 USA.
RP Feng, H (reprint author), Montclair State Univ, Dept Earth & Environm Studies, Montclair, NJ 07043 USA.
EM fengh@mail.montclair.edu
FU State Key Laboratory of Estuarine and Coastal Research Open Research
Fund [SKLEC-KF201304]; China Scholarship Council; Margaret and Herman
Sokol Foundation; U.S. Department of Energy, Office of Science, Office
of Workforce Development for Teachers and Scientists (WDTS) under the
Visiting Faculty Program (VFP); U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences [DE-AC02-98CH10886]; U.S.
Department of Energy - Geosciences [DE-FG02-92ER14244]
FX This work was supported in part by the State Key Laboratory of Estuarine
and Coastal Research Open Research Fund (Ref #: SKLEC-KF201304) (HF, WZ,
LY, WL, YQ), the China Scholarship Council (YQ), and the Margaret and
Herman Sokol Foundation (HF). This project was also supported in part by
the U.S. Department of Energy, Office of Science, Office of Workforce
Development for Teachers and Scientists (WDTS) under the Visiting
Faculty Program (VFP) (HF). Use of the NSLS was supported by the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-98CH10886. NSLS X27A was supported
in part by the U.S. Department of Energy - Geosciences
(DE-FG02-92ER14244 to The University of Chicago - CARS). We are also
grateful to Professor Elena Maestri, Editor of Environmental Science and
Pollution Research, and the two anonymous reviewers who offered
constructive comments and suggestions on an earlier draft of this paper.
NR 63
TC 2
Z9 2
U1 5
U2 18
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 0944-1344
EI 1614-7499
J9 ENVIRON SCI POLLUT R
JI Environ. Sci. Pollut. Res.
PD DEC
PY 2015
VL 22
IS 23
BP 18933
EP 18944
DI 10.1007/s11356-015-5068-4
PG 12
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA CX6MU
UT WOS:000365816000059
PM 26208662
ER
PT J
AU Bierman, PR
Davis, PT
Corbett, LB
Lifton, NA
Finkel, RC
AF Bierman, Paul R.
Davis, P. Thompson
Corbett, Lee B.
Lifton, Nathaniel A.
Finkel, Robert C.
TI Cold-based Laurentide ice covered New England's highest summits during
the Last Glacial Maximum
SO GEOLOGY
LA English
DT Article
ID SITU COSMOGENIC BE-10; WHITE MOUNTAINS; BAFFIN-ISLAND; NEW-HAMPSHIRE;
ARCTIC CANADA; KATAHDIN AREA; DEGLACIATION; EROSION; SHEET; NUCLIDE
AB To better understand glacial history and process in New England (northeastern United States), a mountainous area overrun by the Laurentide Ice Sheet, we measured three cosmogenic nuclides in nine upland samples. The concentrations of Be-10 and Al-26 in some samples collected near the summits of Katahdin (Maine) and Mount Washington and Little Haystack Mountain (New Hampshire) are 2-10 times higher than expected for a single exposure period, considering field evidence indicating that continental ice-covered all New England peaks during the Last Glacial Maximum. In-situ C-14 exposure ages from the summits are much younger, suggesting that high-elevation sampling sites were ice-covered before and during the Last Glacial Maximum. Field and isotopic data are consistent with New England summits being covered in part by cold-based continental ice that did not erode much rock. The contrast in erosion rates between stable summits and deeply eroded valleys likely contributes to the development and maintenance of northern Appalachian topography.
C1 [Bierman, Paul R.; Corbett, Lee B.] Univ Vermont, Dept Geol, Burlington, VT 05405 USA.
[Davis, P. Thompson] Bentley Univ, Dept Nat & Appl Sci, Waltham, MA 02452 USA.
[Lifton, Nathaniel A.] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA.
[Lifton, Nathaniel A.] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA.
[Finkel, Robert C.] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA.
[Finkel, Robert C.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Bierman, PR (reprint author), Univ Vermont, Dept Geol, Burlington, VT 05405 USA.
FU National Science Foundation [OPP-93-21733]
FX We thank Baxter State Park (Maine, USA) for permission to sample. C.
Dorion, J. Hoekwater, and P. Dillon assisted with sampling. Analysis was
supported by National Science Foundation grant OPP-93-21733. We thank
A.J.T. Jull, D. Biddulph, and R. Cruz for 14C measurements at
the University of Arizona. Comments from D. Dethier, J. Ridge, and an
anonymous reviewer improved the manuscript.
NR 40
TC 4
Z9 4
U1 0
U2 10
PU GEOLOGICAL SOC AMER, INC
PI BOULDER
PA PO BOX 9140, BOULDER, CO 80301-9140 USA
SN 0091-7613
EI 1943-2682
J9 GEOLOGY
JI Geology
PD DEC
PY 2015
VL 43
IS 12
BP 1059
EP 1062
DI 10.1130/G37225.1
PG 4
WC Geology
SC Geology
GA CX3DJ
UT WOS:000365575400007
ER
PT J
AU Jaime, MC
Zhou, YN
Lin, JS
Gamwo, IK
AF Jaime, Maria C.
Zhou, Yaneng
Lin, Jeen-Shang
Gamwo, Isaac K.
TI Finite element modeling of rock cutting and its fragmentation process
SO INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
LA English
DT Article
DE Scratch test; Rock cutting; Finite element method; Rock fragmentation;
Fracture energy
ID DRAG BITS; TRANSITION; MECHANICS
AB Rock cutting is a challenging problem from a modeling perspective. The challenges come from the complexity of the physics from the tool-rock interaction to the fracture process and propagation of the quasibrittle rocks. This study was aimed at developing a finite element procedure that was capable of providing reasonable estimates of cutting forces and, at the same time, capturing the essential characteristics of the fragmentation process. Published laboratory rock scratch tests were used as modeling targets since these tests encompass all essential characteristics of rock cutting. Both shallow cuts and deep cuts from a rectangular cutter were analyzed first, followed by modeling of shallow cuts from a disc cutter. It was concluded that rock cutting could be reasonably modeled by using a plasticity-damage model, an element erosion scheme that removes an element when its energy release equals fracture energy, together with a proper selection of modeling parameters. (C) 2015 Elsevier Ltd. All rights reserved.
C1 [Jaime, Maria C.; Lin, Jeen-Shang] Univ Pittsburgh, Dept Civil & Environm Engn, Pittsburgh, PA 15261 USA.
[Lin, Jeen-Shang] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15261 USA.
[Zhou, Yaneng] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA.
[Gamwo, Isaac K.] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Lin, JS (reprint author), Univ Pittsburgh, Dept Civil & Environm Engn, Pittsburgh, PA 15261 USA.
EM jslin@pitt.edu
FU Department of Energy's National Energy Technology Laboratory
[DE-AC26-04NT41817]; University of Pittsburgh [DE-AC26-04NT41817]
FX This technical effort was performed in support of the research on
drilling under extreme conditions under the RDS contract
DE-AC26-04NT41817 between the Department of Energy's National Energy
Technology Laboratory and the University of Pittsburgh. The authors
would also like to expresses their gratitude to Emmanuel Detournay of
the University of Minnesota for providing the cutting films, and to
Pierre Besuelle of the National Center for Scientific Research, France,
for providing the Vosges sandstone testing data.
NR 25
TC 3
Z9 3
U1 5
U2 11
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1365-1609
EI 1873-4545
J9 INT J ROCK MECH MIN
JI Int. J. Rock Mech. Min. Sci.
PD DEC
PY 2015
VL 80
BP 137
EP 146
DI 10.1016/j.ijrmms.2015.09.004
PG 10
WC Engineering, Geological; Mining & Mineral Processing
SC Engineering; Mining & Mineral Processing
GA CX3HL
UT WOS:000365587900015
ER
PT J
AU Mathaudhu, SN
Boyce, BL
AF Mathaudhu, Suveen N.
Boyce, Brad L.
TI Thermal Stability: The Next Frontier for Nanocrystalline Materials
SO JOM
LA English
DT Editorial Material
ID COPPER; STABILIZATION; TEMPERATURE; ALLOYS
C1 [Mathaudhu, Suveen N.] Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA.
[Mathaudhu, Suveen N.] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA.
[Boyce, Brad L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Mathaudhu, SN (reprint author), Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA.
EM smath-audhu@engr.ucr.edu; blboyce@sandia.gov
NR 14
TC 4
Z9 5
U1 3
U2 17
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
EI 1543-1851
J9 JOM-US
JI JOM
PD DEC
PY 2015
VL 67
IS 12
BP 2785
EP 2787
DI 10.1007/s11837-015-1708-x
PG 3
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA CX2QM
UT WOS:000365541700003
ER
PT J
AU Mccabe, RJ
Carpenter, JS
Vogel, S
Mara, NA
Beyerlein, IJ
AF Mccabe, Rodney J.
Carpenter, John S.
Vogel, Sven
Mara, Nathan A.
Beyerlein, Irene J.
TI Recrystallization and Grain Growth in Accumulative Roll-Bonded Metal
Composites
SO JOM
LA English
DT Article
ID ELECTRON BACKSCATTER DIFFRACTION; NB NANOLAMELLAR COMPOSITES;
NANOCRYSTALLINE ALLOYS; BIMETAL INTERFACES; TEXTURE; STABILITY;
EVOLUTION; FRACTION; COPPER
AB We examine recrystallization and grain growth during processing of accumulative roll-bonded (ARB) Cu-Nb and Zr-Nb composites. Throughout the ARB process, from initial millimeter thick layers down to nanometer thick layers, the mechanism for recrystallization and grain growth is the motion of high-angle grain boundaries (HAGBs). However, the driving forces for these phenomena change as the densities of different types of defects evolve during the process. The creation and redistribution of dislocations, grain boundaries, and phase boundaries has significant effects on recrystallization and grain growth and, thus, on microstructural evolution. Both Cu-Nb and Zr-Nb exhibit a distinct transition in recrystallization and growth behavior at around 500-nm average layer thicknesses. For the thicker layered materials, the microstructure evolution during recrystallization and growth is determined by the density and distribution of dislocations and HAGBs. For layers less than 500 nm, the layers are largely one-grain thick and the grains are nearly dislocation free; coarsening of grains within layers at the nanoscale is due to reduction in phase boundary energy.
C1 [Mccabe, Rodney J.; Carpenter, John S.; Vogel, Sven] Los Alamos Natl Lab, MST Div, Los Alamos, NM 87545 USA.
[Mara, Nathan A.] Los Alamos Natl Lab, MPA CINT, Los Alamos, NM 87545 USA.
[Beyerlein, Irene J.] Los Alamos Natl Lab, T Div, Los Alamos, NM 87545 USA.
RP Mccabe, RJ (reprint author), Los Alamos Natl Lab, MST Div, POB 1663, Los Alamos, NM 87545 USA.
EM rmccabe@lanl.gov
OI McCabe, Rodney /0000-0002-6684-7410; Vogel, Sven C./0000-0003-2049-0361;
Carpenter, John/0000-0001-8821-043X
FU Los Alamos National Laboratory Directed Research and Development (LDRD)
[20140348ER]; National Nuclear Security Administration of the U.S.
Department of Energy [DE-AC52-06NA25396]
FX This work was supported by the Los Alamos National Laboratory Directed
Research and Development (LDRD) Project 20140348ER. Los Alamos National
Laboratory, an affirmative action equal opportunity employer, is
operated by Los Alamos National Security, LLC, for the National Nuclear
Security Administration of the U.S. Department of Energy under contract
DE-AC52-06NA25396. Neutron diffraction results were collected on the
High Pressure Preferred Orientation (HIPPO) beam line at the Los Alamos
Neutron Science Center. Electron microscopy was performed at the Los
Alamos Electron Microscopy Laboratory.
NR 32
TC 1
Z9 1
U1 6
U2 19
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
EI 1543-1851
J9 JOM-US
JI JOM
PD DEC
PY 2015
VL 67
IS 12
BP 2810
EP 2819
DI 10.1007/s11837-015-1663-6
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA CX2QM
UT WOS:000365541700006
ER
PT J
AU Chapman, KW
Lapidus, SH
Chupas, PJ
AF Chapman, Karena W.
Lapidus, Saul H.
Chupas, Peter J.
TI Applications of principal component analysis to pair distribution
function data
SO JOURNAL OF APPLIED CRYSTALLOGRAPHY
LA English
DT Article
DE parametric; high-throughput; multivariate analysis; model-independent
analysis; pair distribution function; principal component analysis
ID AB-INITIO DETERMINATION; X-RAY-DIFFRACTION; HIGH-RESOLUTION;
NANOSTRUCTURE; GAMMA-AL2O3; SCATTERING
AB Developments in X-ray scattering instruments have led to unprecedented access to in situ and parametric X-ray scattering data. Deriving scientific insights and understanding from these large volumes of data has become a rate-limiting step. While formerly a data-limited technique, pair distribution function (PDF) measurement capacity has expanded to the point that the method is rarely limited by access to quantitative data or material characteristics - analysis and interpretation of the data can be a more severe impediment. This paper shows that multivariate analyses offer a broadly applicable and efficient approach to help analyse series of PDF data from high-throughput and in situ experiments. Specifically, principal component analysis is used to separate features from atom-atom pairs that are correlated - changing concentration and/or distance in concert - allowing evaluation of how they vary with material composition, reaction state or environmental variable. Without requiring prior knowledge of the material structure, this can allow the PDF from constituents of a material to be isolated and its structure more readily identified and modelled; it allows one to evaluate reactions or transitions to quantify variations in species concentration and identify intermediate species; and it allows one to identify the length scale and mechanism relevant to structural transformations.
C1 [Chapman, Karena W.; Lapidus, Saul H.; Chupas, Peter J.] Argonne Natl Lab, Xray Sci Div, Lemont, IL 60439 USA.
RP Chapman, KW (reprint author), Argonne Natl Lab, Xray Sci Div, Lemont, IL 60439 USA.
EM chapmank@aps.anl.gov; chupas@aps.anl.gov
FU Joint Center for Energy Storage Research, an Energy Innovation Hub - US
Department of Energy, Office of Science, Basic Energy Sciences; US
Department of Energy [DE-AC02-06CH11357]
FX This work was supported as part of the Joint Center for Energy Storage
Research, an Energy Innovation Hub funded by the US Department of
Energy, Office of Science, Basic Energy Sciences. Work done at Argonne
and use of the Advanced Photon Source, an Office of Science User
Facility operated for the US Department of Energy Office of Science by
Argonne National Laboratory, were supported by the US Department of
Energy under contract No. DE-AC02-06CH11357.
NR 22
TC 4
Z9 4
U1 6
U2 13
PU INT UNION CRYSTALLOGRAPHY
PI CHESTER
PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND
SN 1600-5767
J9 J APPL CRYSTALLOGR
JI J. Appl. Crystallogr.
PD DEC
PY 2015
VL 48
BP 1619
EP 1626
DI 10.1107/S1600576715016532
PN 6
PG 8
WC Chemistry, Multidisciplinary; Crystallography
SC Chemistry; Crystallography
GA CX5XC
UT WOS:000365774800004
ER
PT J
AU Olds, D
Wang, HW
Page, K
AF Olds, Daniel
Wang, Hsiu-Wen
Page, Katharine
TI DShaper: an approach for handling missing low-Q data in pair
distribution function analysis of nanostructured systems
SO JOURNAL OF APPLIED CRYSTALLOGRAPHY
LA English
DT Article
DE pair distribution function data analysis; shape functions;
nanostructured systems; DShaper
ID RADIAL-DISTRIBUTION FUNCTION; SMALL-ANGLE SCATTERING; X-RAY-DIFFRACTION;
ATOMIC-STRUCTURE; NANOPARTICLES; DISORDER; NANOCRYSTALS; SIMULATION;
MECHANISM; SIZE
AB This article discusses the potential problems and currently available solutions in modeling powder-diffraction-based pair distribution function (PDF) data from systems where morphological feature information content includes distances in the nanometre length scale, such as finite nanoparticles, nanoporous networks and nanoscale precipitates in bulk materials. The implications of an experimental finite minimum Q value are reviewed by simulation, which also demonstrates the advantages of combining PDF data with small-angle scattering data. A simple Fortran90 code, DShaper, is introduced, which may be incorporated into PDF data fitting routines in order to approximate the so-called 'shape function' for any atomistic model.
C1 [Olds, Daniel; Page, Katharine] Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA.
[Olds, Daniel; Wang, Hsiu-Wen; Page, Katharine] Los Alamos Natl Lab, Lujan Neutron Scattering Ctr, Los Alamos, NM 87545 USA.
[Wang, Hsiu-Wen] Oak Ridge Natl Lab, Joint Inst Neutron Sci, Oak Ridge, TN 37831 USA.
RP Olds, D (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA.
EM oldsdp@ornl.gov
RI Olds, Daniel/D-1722-2016; Page, Katharine/C-9726-2009
OI Olds, Daniel/0000-0002-4611-4113; Page, Katharine/0000-0002-9071-3383
FU Department of Energy's Office of Basic Energy Sciences; US Department of
Energy, Office of Science, Office of Basic Energy Sciences, Early Career
Research Program award [KC040602]; Laboratory Directed Research and
Development Program at Los Alamos National Laboratory; Los Alamos
National Security LLC under DOE [DE-AC52-06NA25396]
FX We gratefully acknowledge helpful discussions with Rex Hjelm and
Devinder Sivia concerning aspects of this work. The work by all authors
was supported under the Department of Energy's Office of Basic Energy
Sciences. Time spent by HWW was partially supported through the US
Department of Energy, Office of Science, Basic Energy Sciences, Chemical
Sciences, Geosciences and Biosciences Division. Time spent by KP was
partially supported through the US Department of Energy, Office of
Science, Office of Basic Energy Sciences, Early Career Research Program
award KC040602. HWW and KP were also partially sponsored by the
Laboratory Directed Research and Development Program at Los Alamos
National Laboratory. Los Alamos National Laboratory is operated by Los
Alamos National Security LLC under DOE contract No. DE-AC52-06NA25396.
NR 43
TC 1
Z9 1
U1 5
U2 12
PU INT UNION CRYSTALLOGRAPHY
PI CHESTER
PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND
SN 1600-5767
J9 J APPL CRYSTALLOGR
JI J. Appl. Crystallogr.
PD DEC
PY 2015
VL 48
BP 1651
EP 1659
DI 10.1107/S1600576715016581
PN 6
PG 9
WC Chemistry, Multidisciplinary; Crystallography
SC Chemistry; Crystallography
GA CX5XC
UT WOS:000365774800008
ER
PT J
AU Caliandro, R
Guccione, P
Nico, G
Tutuncu, G
Hanson, JC
AF Caliandro, Rocco
Guccione, Pietro
Nico, Giovanni
Tutuncu, Goknur
Hanson, Jonathan C.
TI Tailored multivariate analysis for modulated enhanced diffraction
SO JOURNAL OF APPLIED CRYSTALLOGRAPHY
LA English
DT Article
DE multivariate analysis; X-ray powder diffraction; modulated enhanced
diffraction
ID NONNEGATIVE MATRIX FACTORIZATION; PRINCIPAL COMPONENT ANALYSIS; CURVE
RESOLUTION; SOLID CATALYSTS; SPECTROSCOPY; SELECTIVITY; ALGORITHMS;
SOFTWARE; METHANOL
AB Modulated enhanced diffraction (MED) is a technique allowing the dynamic structural characterization of crystalline materials subjected to an external stimulus, which is particularly suited for in situ and operando structural investigations at synchrotron sources. Contributions from the (active) part of the crystal system that varies synchronously with the stimulus can be extracted by an offline analysis, which can only be applied in the case of periodic stimuli and linear system responses. In this paper a new decomposition approach based on multivariate analysis is proposed. The standard principal component analysis (PCA) is adapted to treat MED data: specific figures of merit based on their scores and loadings are found, and the directions of the principal components obtained by PCA are modified to maximize such figures of merit. As a result, a general method to decompose MED data, called optimum constrained components rotation (OCCR), is developed, which produces very precise results on simulated data, even in the case of nonperiodic stimuli and/or nonlinear responses. The multivariate analysis approach is able to supply in one shot both the diffraction pattern related to the active atoms (through the OCCR loadings) and the time dependence of the system response (through the OCCR scores). When applied to real data, OCCR was able to supply only the latter information, as the former was hindered by changes in abundances of different crystal phases, which occurred besides structural variations in the specific case considered. To develop a decomposition procedure able to cope with this combined effect represents the next challenge in MED analysis.
C1 [Caliandro, Rocco] CNR, Inst Crystallog, I-70126 Bari, Italy.
[Guccione, Pietro] Politecn Bari, Dipartimento Ingn Elettr & Informaz, I-70125 Bari, Italy.
[Nico, Giovanni] CNR, Ist Applicaz Calcolo Mauro Picone, I-70126 Bari, Italy.
[Tutuncu, Goknur] Brookhaven Natl Lab, Photon Sci Div, NSLS 2, Upton, NY 11973 USA.
[Hanson, Jonathan C.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Caliandro, R (reprint author), CNR, Inst Crystallog, Via Amendola 122, I-70126 Bari, Italy.
EM rocco.caliandro@ic.cnr.it
RI Hanson, jonathan/E-3517-2010; caliandro, rocco/A-2686-2013
OI caliandro, rocco/0000-0002-0368-4925
FU US Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-98CH10886]; short-term mobility CNR program
FX Use of the National Synchrotron Light Source, Brookhaven National
Laboratory, was supported by the US Department of Energy, Office of
Science, Office of Basic Energy Sciences, under contract No.
DE-AC02-98CH10886. This research has been partially supported by the
short-term mobility CNR program. Caterina Chiarella is acknowledged for
technical support.
NR 31
TC 3
Z9 3
U1 0
U2 4
PU INT UNION CRYSTALLOGRAPHY
PI CHESTER
PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND
SN 1600-5767
J9 J APPL CRYSTALLOGR
JI J. Appl. Crystallogr.
PD DEC
PY 2015
VL 48
BP 1679
EP 1691
DI 10.1107/S1600576715017070
PN 6
PG 13
WC Chemistry, Multidisciplinary; Crystallography
SC Chemistry; Crystallography
GA CX5XC
UT WOS:000365774800012
ER
PT J
AU Stoupin, S
Liu, ZP
Heald, SM
Brewe, D
Meron, M
AF Stoupin, Stanislav
Liu, Zunping
Heald, Steve M.
Brewe, Dale
Meron, Mati
TI Diffraction imaging for in situ characterization of double-crystal X-ray
monochromators
SO JOURNAL OF APPLIED CRYSTALLOGRAPHY
LA English
DT Article
DE diffraction imaging; X-ray monochromators; high heat loads; thermal
deformation; cryogenic cooling; rocking curves; in situ metrology
ID COOLED SILICON MONOCHROMATORS; HEAT LOAD; THERMAL DEFORMATION;
PERFORMANCE LIMITS; OPTICS; APS
AB Imaging of the Bragg-reflected X-ray beam is proposed and validated as an in situ method for characterization of the performance of double-crystal monochromators under the heat load of intense synchrotron radiation. A sequence of images is collected at different angular positions on the reflectivity curve of the second crystal and analyzed. The method provides rapid evaluation of the wavefront of the exit beam, which relates to local misorientation of the crystal planes along the beam footprint on the thermally distorted first crystal. The measured misorientation can be directly compared with the results of finite element analysis. The imaging method offers an additional insight into the local intrinsic crystal quality over the footprint of the incident X-ray beam.
C1 [Stoupin, Stanislav; Liu, Zunping; Heald, Steve M.; Brewe, Dale] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Meron, Mati] Univ Chicago, CARS, Chicago, IL 60637 USA.
RP Stoupin, S (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
EM sstoupin@aps.anl.gov
FU US Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]
FX We thank M. Beno, G. Navrotski, J. Lang, A. Macrander and other members
of the high-heat-load monochromator working group at the Advanced Photon
Source for helpful discussions. L. Berman is acknowledged for valuable
comments. M. Moore, R. Woods and M. Pape are acknowledged for technical
support. Use of the Advanced Photon Source was supported by the US
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under contract No. DE-AC02-06CH11357.
NR 30
TC 2
Z9 2
U1 1
U2 5
PU INT UNION CRYSTALLOGRAPHY
PI CHESTER
PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND
SN 1600-5767
J9 J APPL CRYSTALLOGR
JI J. Appl. Crystallogr.
PD DEC
PY 2015
VL 48
BP 1734
EP 1744
DI 10.1107/S1600576715017446
PN 6
PG 11
WC Chemistry, Multidisciplinary; Crystallography
SC Chemistry; Crystallography
GA CX5XC
UT WOS:000365774800018
ER
PT J
AU Pratt, AJ
DiDonato, M
Shin, DS
Cabelli, DE
Bruns, CK
Belzer, CA
Gorringe, AR
Langford, PR
Tabatabai, LB
Kroll, JS
Tainer, JA
Getzoff, ED
AF Pratt, Ashley J.
DiDonato, Michael
Shin, David S.
Cabelli, Diane E.
Bruns, Cami K.
Belzer, Carol A.
Gorringe, Andrew R.
Langford, Paul R.
Tabatabai, Louisa B.
Kroll, J. Simon
Tainer, John A.
Getzoff, Elizabeth D.
TI Structural, Functional, and Immunogenic Insights on Cu,Zn Superoxide
Dismutase Pathogenic Virulence Factors from Neisseria meningitidis and
Brucella abortus
SO JOURNAL OF BACTERIOLOGY
LA English
DT Article
ID SMALL-ANGLE SCATTERING; X-RAY-SCATTERING; ESCHERICHIA-COLI;
HAEMOPHILUS-DUCREYI; ACTIVE-SITE; CU,ZN-SUPEROXIDE DISMUTASE;
ELECTROSTATIC RECOGNITION; SALMONELLA-TYPHIMURIUM; MOLECULAR
REPLACEMENT; PROTECTIVE IMMUNITY
AB Bacterial pathogens Neisseria meningitidis and Brucella abortus pose threats to human and animal health worldwide, causing meningococcal disease and brucellosis, respectively. Mortality from acute N. meningitidis infections remains high despite antibiotics, and brucellosis presents alimentary and health consequences. Superoxide dismutases are master regulators of reactive oxygen and general pathogenicity factors and are therefore therapeutic targets. Cu,Zn superoxide dismutases (SODs) localized to the periplasm promote survival by detoxifying superoxide radicals generated by major host antimicrobial immune responses. We discovered that passive immunization with an antibody directed at N. meningitidis SOD (NmSOD) was protective in a mouse infection model. To define the relevant atomic details and solution assembly states of this important virulence factor, we report high-resolution and X-ray scattering analyses of NmSOD and of SOD from B. abortus (BaSOD). The NmSOD structures revealed an auxiliary tetrahedral Cu-binding site bridging the dimer interface; mutational analyses suggested that this metal site contributes to protein stability, with implications for bacterial defense mechanisms. Biochemical and structural analyses informed us about electrostatic substrate guidance, dimer assembly, and an exposed C-terminal epitope in the NmSOD dimer. In contrast, the monomeric BaSOD structure provided insights for extending immunogenic peptide epitopes derived from the protein. These collective results reveal unique contributions of SOD to pathogenic virulence, refine predictive motifs for distinguishing SOD classes, and suggest general targets for antibacterial immune responses. The identified functional contributions, motifs, and targets distinguishing bacterial and eukaryotic SOD assemblies presented here provide a foundation for efforts to develop SOD-specific inhibitors of or vaccines against these harmful pathogens.
IMPORTANCE
By protecting microbes against reactive oxygen insults, SODs aid survival of many bacteria within their hosts. Despite the ubiquity and conservation of these key enzymes, notable species-specific differences relevant to pathogenesis remain undefined. To probe mechanisms that govern the functioning of Neisseria meningitidis and Brucella abortus SODs, we used X-ray structures, enzymology, modeling, and murine infection experiments. We identified virulence determinants common to the two homologs, assembly differences, and a unique metal reservoir within meningococcal SOD that stabilizes the enzyme and may provide a safeguard against copper toxicity. The insights reported here provide a rationale and a basis for SOD-specific drug design and an extension of immunogen design to target two important pathogens that continue to pose global health threats.
C1 [Pratt, Ashley J.; DiDonato, Michael; Shin, David S.; Bruns, Cami K.; Getzoff, Elizabeth D.] Scripps Res Inst, Dept Integrat Struct & Computat Biol, La Jolla, CA 92037 USA.
[Pratt, Ashley J.; DiDonato, Michael; Shin, David S.; Bruns, Cami K.; Getzoff, Elizabeth D.] Scripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA.
[Pratt, Ashley J.; Shin, David S.; Tainer, John A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA 94720 USA.
[Cabelli, Diane E.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Belzer, Carol A.; Tabatabai, Louisa B.] Natl Anim Dis Ctr, Ruminant Dis & Immunol, Ames, IA USA.
[Gorringe, Andrew R.] Publ Hlth England, Salisbury, Wilts, England.
[Langford, Paul R.] Univ London Imperial Coll Sci Technol & Med, Dept Med, Paediat Sect, London, England.
[Tainer, John A.] Univ Texas MD Anderson Canc Ctr, Dept Mol & Cellular Oncol, Houston, TX 77030 USA.
RP Getzoff, ED (reprint author), Scripps Res Inst, Dept Integrat Struct & Computat Biol, La Jolla, CA 92037 USA.
EM edg@scripps.edu
FU NIH [R01GM039345, T32AG000266, R01GM105404]; Robert A. Welch
Distinguished Chair in Chemistry; George John and Sheilah Livanos
Charitable Trust; NSF; Skaggs Institute for Chemical Biology; Canadian
Institutes of Health Research; Integrated Diffraction Analysis
Technologies (IDAT) program - Department of Energy [BL12.3.1]; U.S.
Department of Energy [DE-AC02-98CH10886]
FX This work was funded by NIH grant R01GM039345 (to E.D.G. and J.A.T.).
J.A.T. is supported by a Robert A. Welch Distinguished Chair in
Chemistry. Work in the Kroll laboratory was supported by The George John
and Sheilah Livanos Charitable Trust. A.J.P. was supported in part
through predoctoral NSF and Skaggs Institute for Chemical Biology
fellowships and an NIH T32AG000266 postdoctoral training grant. M.D. was
supported by a Canadian Institutes of Health Research postdoctoral
fellowship.; We thank the beamline staff at the Stanford Synchrotron
Radiation Laboratory (SSRL) for their help during data collection and
for the use of the Structurally Integrated BiologY for Life Sciences
(SIBYLS) beamline at the Advanced Light Source at Lawrence Berkeley
National Laboratory. The SIBYLS beamline (BL12.3.1) is funded through
the Integrated Diffraction Analysis Technologies (IDAT) program,
supported by the Department of Energy and by NIH grant R01GM105404.
Pulse radiolysis studies were carried out at the Center for Radiation
Chemical Research, Brookhaven National Laboratory, which was supported
under contract DE-AC02-98CH10886 with the U.S. Department of Energy and
by its Division of Chemical Sciences, Office of Basic Energy Sciences.
The contributions and technical assistance provided by Chiharu Hitomi,
Andrew S. Arvai, Carey Kassman, and Zhujin Cao are greatly appreciated.
NR 123
TC 1
Z9 1
U1 0
U2 14
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0021-9193
EI 1098-5530
J9 J BACTERIOL
JI J. Bacteriol.
PD DEC
PY 2015
VL 197
IS 24
BP 3834
EP 3847
DI 10.1128/JB.00343-15
PG 14
WC Microbiology
SC Microbiology
GA CX3TX
UT WOS:000365623400010
PM 26459556
ER
PT J
AU Cavanaugh, NR
Shen, SSP
AF Cavanaugh, Nicholas R.
Shen, Samuel S. P.
TI The Effects of Gridding Algorithms on the Statistical Moments and Their
Trends of Daily Surface Air Temperature
SO JOURNAL OF CLIMATE
LA English
DT Article
DE Physical Meteorology and Climatology; Temperature; Observational
techniques and algorithms; Surface observations; Mathematical and
statistical techniques; Interpolation schemes; Variability; Anomalies;
Climate variability; Trends
ID TURBULENCE APPROXIMATION; INHOMOGENEOUS FLOWS; PRECIPITATION;
CLIMATOLOGY; ERROR
AB This paper explores the effects from averaging weather station data onto a grid on the first four statistical moments of daily minimum and maximum surface air temperature (SAT) anomalies over the entire globe. The Global Historical Climatology Network-Daily (GHCND) and the Met Office Hadley Centre GHCND (HadGHCND) datasets from 1950 to 2010 are examined. The GHCND station data exhibit large spatial patterns for each moment and statistically significant moment trends from 1950 to 2010, indicating that SAT probability density functions are non-Gaussian and have undergone characteristic changes in shape due to decadal variability and/or climate change. Comparisons with station data show that gridded averages always underestimate observed variability, particularly in the extremes, and have altered moment trends that are in some cases opposite in sign over large geographic areas. A statistical closure approach based on the quasi-normal approximation is taken to explore SAT's higher-order moments and point correlation structure. This study focuses specifically on relating variability calculated from station data to that from gridded data through the moment equations for weighted sums of random variables. The higher-order and nonlinear spatial correlations up to the fourth order demonstrate that higher-order moments at grid scale can be determined approximately by functions of station pair correlations that tend to follow the usual Kolmogorov scaling relation. These results can aid in the development of constraints to reduce uncertainties in climate models and have implications for studies of atmospheric variability, extremes, and climate change using gridded observations.
C1 [Cavanaugh, Nicholas R.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
[Cavanaugh, Nicholas R.; Shen, Samuel S. P.] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
[Shen, Samuel S. P.] San Diego State Univ, Dept Math & Stat, San Diego, CA 92182 USA.
RP Cavanaugh, NR (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,Mailstop 74R316C, Berkeley, CA 94720 USA.
EM nrcavanaugh@lbl.gov
FU National Science Foundation (NSF) [AGS-1015957, AGS-1015926,
AGS-1419526, OCE0960770, OCE1419306]
FX This research was supported in part by the National Science Foundation
(NSF) under Grants AGS-1015957, AGS-1015926, AGS-1419526, OCE0960770,
and OCE1419306. The authors thank the three anonymous reviewers and the
editor for their comments, which greatly helped improve the quality of
the manuscript.
NR 37
TC 3
Z9 3
U1 0
U2 8
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
EI 1520-0442
J9 J CLIMATE
JI J. Clim.
PD DEC
PY 2015
VL 28
IS 23
BP 9188
EP 9205
DI 10.1175/JCLI-D-14-00668.1
PG 18
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CX7DC
UT WOS:000365860500008
ER
PT J
AU Negron-Juarez, RI
Riley, WJ
Koven, CD
Knox, RG
Taylor, PG
Chambers, JQ
AF Negron-Juarez, Robinson I.
Riley, William J.
Koven, Charles D.
Knox, Ryan G.
Taylor, Philip G.
Chambers, Jeffrey Q.
TI The Rainfall Sensitivity of Tropical Net Primary Production in CMIP5
Twentieth-and Twenty-First-Century Simulations
SO JOURNAL OF CLIMATE
LA English
DT Review
DE Models and modeling; Climate models; General circulation models
ID EARTH SYSTEM MODELS; CLIMATE-CHANGE; CARBON-CYCLE; STOCHASTIC
SIMULATION; DAILY PRECIPITATION; AMAZONIAN FORESTS; ATMOSPHERIC CO2;
SOLAR-RADIATION; SAMPLE-SIZE; PART I
AB In this study, the authors used the relationship between mean annual rainfall (MAR) and net primary production (NPP) (MAR-NPP) observed in tropical forests to evaluate the performance (twentieth century) and predictions (twenty-first century) of tropical NPP from 10 earth system models (ESMs) from phase 5 of the Coupled Model Intercomparison Project (CMIP5). Over the tropical forest domain most of the CMIP5 models showed a positive correlation between NPP and MAR similar to observations. The GFDL, CESM1, CCSM4, and Beijing Normal University (BNU) models better represented the observed MAR-NPP relationship. Compared with observations, the models were able to reproduce the seasonality of rainfall over areas with long dry seasons, but NPP seasonality was difficult to evaluate given the limited observations. From 2006 to 2100, for representative concentration pathway 8.5 (RCP8.5) (and most RCP4.5 simulations) all models projected increases in NPP, but these increases occurred at different rates. By the end of the twenty-first century the models with better performance against observed NPP-MAR projected increases in NPP between similar to 2% (RCP4.5) and similar to 19% (RCP8.5) relative to contemporary observations, representing increases of similar to 9% and similar to 25% relative to their historical simulations. When climate and CO2 fertilization are considered as separate controls on plant physiology, the current climate yields maximum productivity. However, as future climate changes become detrimental to productivity, CO2 fertilization becomes the dominant response, resulting in an overall increase in NPP toward the end of the twenty-first century. Thus, the way in which models represent CO2 fertilization affects their performance. Further studies addressing the individual and simultaneous effect of other climate variables on NPP are needed.
C1 [Negron-Juarez, Robinson I.; Riley, William J.; Koven, Charles D.; Knox, Ryan G.; Chambers, Jeffrey Q.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
[Taylor, Philip G.] Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA.
[Chambers, Jeffrey Q.] Univ Calif Berkeley, Dept Geog, Berkeley, CA 94720 USA.
RP Negron-Juarez, RI (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM robinson.inj@lbl.gov
RI Riley, William/D-3345-2015; Koven, Charles/N-8888-2014; Chambers,
Jeffrey/J-9021-2014; Knox, Ryan/N-7897-2013; Negron-Juarez,
Robinson/I-6289-2016
OI Riley, William/0000-0002-4615-2304; Koven, Charles/0000-0002-3367-0065;
Chambers, Jeffrey/0000-0003-3983-7847; Knox, Ryan/0000-0003-1140-3350;
FU Office of Science, Office of Biological and Environmental Research of
the U.S. Department of Energy as part of their Regional and Global
Climate Modeling (RGCM) Program [DE-AC02-05CH11231]
FX This research was supported by the Director of the Office of Science,
Office of Biological and Environmental Research of the U.S. Department
of Energy under Contract DE-AC02-05CH11231 as part of their Regional and
Global Climate Modeling (RGCM) Program. We thank the three anonymous
reviewers for their insightful comments and suggestions.
NR 113
TC 0
Z9 0
U1 0
U2 15
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
EI 1520-0442
J9 J CLIMATE
JI J. Clim.
PD DEC
PY 2015
VL 28
IS 23
BP 9313
EP 9331
DI 10.1175/JCLI-D-14-00675.1
PG 19
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CX7DC
UT WOS:000365860500016
ER
PT J
AU Monin, L
Griffiths, KL
Lam, WY
Gopal, R
Kang, DWD
Ahmed, M
Rajamanickam, A
Cruz-Lagunas, A
Zuniga, J
Babu, S
Kolls, JK
Mitreva, M
Rosa, BA
Ramos-Payan, R
Morrison, TE
Murray, PJ
Rangel-Moreno, J
Pearce, EJ
Khader, SA
AF Monin, Leticia
Griffiths, Kristin L.
Lam, Wing Y.
Gopal, Radha
Kang, Dongwan D.
Ahmed, Mushtaq
Rajamanickam, Anuradha
Cruz-Lagunas, Alfredo
Zuniga, Joaquin
Babu, Subash
Kolls, Jay K.
Mitreva, Makedonka
Rosa, Bruce A.
Ramos-Payan, Rosalio
Morrison, Thomas E.
Murray, Peter J.
Rangel-Moreno, Javier
Pearce, Edward J.
Khader, Shabaana A.
TI Helminth-induced arginase-1 exacerbates lung inflammation and disease
severity in tuberculosis
SO JOURNAL OF CLINICAL INVESTIGATION
LA English
DT Article
ID T-CELL RESPONSES; MYCOBACTERIUM-BOVIS BCG; SCHISTOSOMA-MANSONI;
NEUTROPHILIC INFLAMMATION; LATENT TUBERCULOSIS; MACROPHAGE SUBSETS;
INFECTION; MICE; VACCINATION; GRANULOMAS
AB Parasitic helminth worms, such as Schistosoma mansoni, are endemic in regions with a high prevalence of tuberculosis (TB) among the population. Human studies suggest that helminth coinfections contribute to increased TB susceptibility and increased rates of TB reactivation. Prevailing models suggest that T helper type 2 (Th2) responses induced by helminth infection impair Th1 immune responses and thereby limit Mycobacterium tuberculosis (Mtb) control. Using a pulmonary mouse model of Mtb infection, we demonstrated that S. mansoni coinfection or immunization with S. mansoni egg antigens can reversibly impair Mtb-specific T cell responses without affecting macrophage-mediated Mtb control. Instead, S. mansoni infection resulted in accumulation of high arginase-1-expressing macrophages in the lung, which formed type 2 granulomas and exacerbated inflammation in Mtb-infected mice. Treatment of coinfected animals with an antihelminthic improved Mtb-specific Th1 responses and reduced disease severity. In a genetically diverse mouse population infected with Mtb, enhanced arginase-1 activity was associated with increased lung inflammation. Moreover, in patients with pulmonary TB, lung damage correlated with increased serum activity of arginase-1, which was elevated in TB patients coinfected with helminths. Together, our data indicate that helminth coinfection induces arginase-1-expressing type 2 granulomas, thereby increasing inflammation and TB disease severity. These results also provide insight into the mechanisms by which helminth coinfections drive increased susceptibility, disease progression, and severity in TB.
C1 [Monin, Leticia; Gopal, Radha; Khader, Shabaana A.] Univ Pittsburgh, Sch Med, Dept Pediat, Div Infect Dis, Pittsburgh, PA 15261 USA.
[Monin, Leticia; Griffiths, Kristin L.; Ahmed, Mushtaq; Khader, Shabaana A.] Washington Univ, Sch Med, Dept Mol Microbiol, St Louis, MO 63110 USA.
[Monin, Leticia; Griffiths, Kristin L.; Ahmed, Mushtaq; Khader, Shabaana A.] Washington Univ, Sch Med, Dept Pathol & Immunol, Div Immunobiol, St Louis, MO 63110 USA.
[Kang, Dongwan D.] Joint Genome Inst, Dept Energy, Walnut Creek, CA USA.
[Kang, Dongwan D.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Genom Div, Berkeley, CA 94720 USA.
[Rajamanickam, Anuradha; Babu, Subash] ICER, Int Ctr Excellence, NIRT, NIH, Madras, Tamil Nadu, India.
[Cruz-Lagunas, Alfredo; Zuniga, Joaquin] Inst Nacl Enfermedades Resp Ismael Cosio Villegas, Mexico City, DF, Mexico.
[Kolls, Jay K.] UPMC, Childrens Hosp Pittsburgh, Pediat Res Inst, Richard King Mellon Fdn, Pittsburgh, PA USA.
[Mitreva, Makedonka; Rosa, Bruce A.] Washington Univ, Sch Med, Genome Inst, St Louis, MO 63110 USA.
[Mitreva, Makedonka] Washington Univ, Sch Med, Div Infect Dis, Dept Internal Med, St Louis, MO 63110 USA.
[Mitreva, Makedonka] Washington Univ, Sch Med, Dept Genet, St Louis, MO 63110 USA.
[Ramos-Payan, Rosalio; Rangel-Moreno, Javier] Univ Rochester, Med Ctr, Dept Med, Div Allergy Immunol & Rheumatol, Rochester, NY 14642 USA.
[Ramos-Payan, Rosalio] Autonomous Univ Sinaloa, Fac Biol & Chem Sci, Culiacan, Sinaloa, Mexico.
[Morrison, Thomas E.] Univ Colorado, Sch Med, Dept Immunol & Microbiol, Aurora, CO USA.
[Murray, Peter J.] St Jude Childrens Res Hosp, Dept Infect Dis, Memphis, TN 38105 USA.
[Murray, Peter J.] St Jude Childrens Res Hosp, Dept Immunol, Memphis, TN 38105 USA.
RP Khader, SA (reprint author), Washington Univ, Dept Mol Microbiol, Campus Box 8230,660 South Euclid Ave, St Louis, MO 63110 USA.
EM khader@wustl.edu
OI /0000-0002-6008-2955; Rangel-Moreno, Javier/0000-0002-9738-1182
FU Washington University in St. Louis, Children's Hospital of Pittsburgh;
NIH [HL105427, AI032573, AI108725]; Children's Hospital of Pittsburgh
Research Advisory Committee Grant from Children's Hospital of Pittsburgh
of the UPMC Health System; American Lung Association Senior Research
Training Fellowship [RT-30592]; Department of Medicine, University of
Rochester [U19 AI91036]
FX This work was supported by Washington University in St. Louis,
Children's Hospital of Pittsburgh, NIH grants HL105427 to S.A. Khader,
AI032573 to E.J. Pearce, and AI108725 to T.E. Morrison. L. Monin was
supported by Children's Hospital of Pittsburgh Research Advisory
Committee Grant from Children's Hospital of Pittsburgh of the UPMC
Health System. K.L. Griffiths was supported by American Lung Association
Senior Research Training Fellowship RT-30592. J. Rangel-Moreno was
supported by funds of the Department of Medicine, University of
Rochester, and U19 AI91036. The authors thank Keke Fairfax and Amber
Smith for SEA preparation and Markus Mohrs for providing IFN-gamma-YFP
reporter mice. We thank Nathella Pavan Kumar, R. Sridhar, and V.V.
Banurekha for assistance with recruitment of patients.
NR 39
TC 11
Z9 11
U1 2
U2 4
PU AMER SOC CLINICAL INVESTIGATION INC
PI ANN ARBOR
PA 35 RESEARCH DR, STE 300, ANN ARBOR, MI 48103 USA
SN 0021-9738
EI 1558-8238
J9 J CLIN INVEST
JI J. Clin. Invest.
PD DEC
PY 2015
VL 125
IS 12
BP 4699
EP 4713
DI 10.1172/JCI77378
PG 15
WC Medicine, Research & Experimental
SC Research & Experimental Medicine
GA CX6SI
UT WOS:000365831300033
PM 26571397
ER
PT J
AU Bezrukov, F
Levkov, D
Sibiryakov, S
AF Bezrukov, Fedor
Levkov, Dmitry
Sibiryakov, Sergey
TI Semiclassical S-matrix for black holes
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Black Holes; Models of Quantum Gravity
ID HIGH-ENERGY COLLISIONS; GRAVITATIONAL COLLAPSE; HAWKING RADIATION;
MASS-INFLATION; THIN SHELLS; GEOMETRODYNAMICS; TRANSITIONS; HORIZON;
FIELD
AB We propose a semiclassical method to calculate S-matrix elements for two-stage gravitational transitions involving matter collapse into a black hole and evaporation of the latter. The method consistently incorporates back-reaction of the collapsing and emitted quanta on the metric. We illustrate the method in several toy models describing spherical self-gravitating shells in asymptotically flat and AdS space-times. We find that electrically neutral shells reflect via the above collapse-evaporation process with probability exp(-B), where B is the Bekenstein-Hawking entropy of the intermediate black hole. This is consistent with interpretation of exp(B) as the number of black hole states. The same expression for the probability is obtained in the case of charged shells if one takes into account instability of the Cauchy horizon of the intermediate Reissner-Nordstrom black hole. Our semiclassical method opens a new systematic approach to the gravitational S-matrix in the non-perturbative regime.
C1 [Bezrukov, Fedor; Sibiryakov, Sergey] CERN, Dept Phys, CH-1211 Geneva 23, Switzerland.
[Bezrukov, Fedor] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
[Bezrukov, Fedor] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Levkov, Dmitry; Sibiryakov, Sergey] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia.
[Sibiryakov, Sergey] Ecole Polytech Fed Lausanne, FSB, ITP, LPPC, CH-1015 Lausanne, Switzerland.
RP Bezrukov, F (reprint author), CERN, Dept Phys, CH-1211 Geneva 23, Switzerland.
EM fedor.bezrukov@uconn.edu; levkov@ms2.inr.ac.ru;
sergey.sibiryakov@cern.ch
FU RFBR [12-02-01203-a, NS-2835.2014.2]; Swiss National Science Foundation
FX We are grateful to D. Blas, V. Berezin, R. Brustein, S. Dubovsky, G.
Dvali, M. Fitkevich, V. Frolov, J. Garriga, V. Mukhanov, V. Rubakov, A.
Smirnov, I. Tkachev and T. Vachaspati for useful discussions. We thank
A. Barvinsky, A. Boyarsky and A. Vikman for encouraging interest. This
work was supported by the grants RFBR 12-02-01203-a (DL), NS-2835.2014.2
(DL), and the Swiss National Science Foundation (SS).
NR 69
TC 0
Z9 0
U1 1
U2 2
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1029-8479
J9 J HIGH ENERGY PHYS
JI J. High Energy Phys.
PD DEC 1
PY 2015
IS 12
AR 002
DI 10.1007/JHEP12(2015)002
PG 42
WC Physics, Particles & Fields
SC Physics
GA CX6LP
UT WOS:000365812700001
ER
PT J
AU Milne, S
Lanagan, M
Ma, BH
AF Milne, Steven
Lanagan, Michael
Ma, Beihai
TI Special Issue: Electronic Materials for Harsh Environments
SO JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
LA English
DT Editorial Material
C1 [Milne, Steven] Univ Leeds, Leeds, W Yorkshire, England.
[Lanagan, Michael] Penn State Univ, University Pk, PA 16802 USA.
[Ma, Beihai] Argonne Natl Lab, Lemont, IL USA.
RP Milne, S (reprint author), Univ Leeds, Leeds, W Yorkshire, England.
EM S.J.Milne@leeds.ac.uk
RI Ma, Beihai/I-1674-2013
OI Ma, Beihai/0000-0003-3557-2773
NR 0
TC 0
Z9 0
U1 2
U2 16
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0957-4522
EI 1573-482X
J9 J MATER SCI-MATER EL
JI J. Mater. Sci.-Mater. Electron.
PD DEC
PY 2015
VL 26
IS 12
SI SI
BP 9225
EP 9225
DI 10.1007/s10854-015-3966-3
PG 1
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Applied; Physics, Condensed Matter
SC Engineering; Materials Science; Physics
GA CX2KP
UT WOS:000365525900001
ER
PT J
AU Ma, BH
Hu, ZQ
Koritala, RE
Lee, TH
Dorris, SE
Balachandran, U
AF Ma, Beihai
Hu, Zhongqiang
Koritala, Rachel E.
Lee, Tae H.
Dorris, Stephen E.
Balachandran, Uthamalingam
TI PLZT film capacitors for power electronics and energy storage
applications
SO JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
LA English
DT Article
ID TITANATE THIN-FILMS; DIELECTRIC-PROPERTIES; RESIDUAL-STRESS; CERAMICS;
DENSITY; PZT
AB Ceramic film capacitors with high dielectric constant and high breakdown strength hold special promise for applications demanding high power density. By means of chemical solution deposition, we deposited a parts per thousand 2-mu m-thick films of lanthanum-doped lead zirconate titanate (PLZT) on LaNiO3-buffered Ni (LNO/Ni) foils and platinized silicon (PtSi) substrates. The dielectric properties and energy storage performance of the resulting samples were determined under a high level of applied electric field. X-ray diffraction stress analysis revealed that PLZT on LNO/Ni bears a compressive stress of a parts per thousand 370 MPa while PLZT on PtSi endures a tensile stress of a parts per thousand 250 MPa. Compressive stress was found to lead to heightened polarization, improved tunability, increased irreversible domain wall motion, and enhanced breakdown strength for PLZT deposited on the LNO/Ni as compared with the PtSi substrate. We observed a tunability of a parts per thousand 55 and a parts per thousand 40 % at room temperature under 100 kV/cm applied field, remanent polarization of a parts per thousand 23.5 and a parts per thousand 7.4 A mu C/cm(2), coercive electric field of a parts per thousand 25.6 and a parts per thousand 21.1 kV/cm, and dielectric breakdown strength of a parts per thousand 2.6 and a parts per thousand 1.5 MV/cm for PLZT deposited on LNO/Ni foils and PtSi substrates, respectively. A high recoverable energy density of a parts per thousand 85 J/cm(3) and energy conversion efficiency of a parts per thousand 65 % were measured on the PLZT film grown on LNO/Ni.
C1 [Ma, Beihai; Hu, Zhongqiang; Lee, Tae H.; Dorris, Stephen E.; Balachandran, Uthamalingam] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
[Koritala, Rachel E.] Argonne Natl Lab, Nanosci & Technol Div, Argonne, IL 60439 USA.
RP Ma, BH (reprint author), Argonne Natl Lab, Div Energy Syst, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM bma@anl.gov
RI Ma, Beihai/I-1674-2013;
OI Ma, Beihai/0000-0003-3557-2773; Hu, Zhongqiang/0000-0002-7534-0427
FU U.S. Department of Energy, Vehicle Technologies Program
[DE-AC02-06CH11357]
FX This work was funded by the U.S. Department of Energy, Vehicle
Technologies Program, under Contract No. DE-AC02-06CH11357.
Microstructure analysis was accomplished at the Electron Microscopy
Center for Materials Research at Argonne National Laboratory, a U.S.
Department of Energy Office of Science Laboratory operated under
Contract No. DE-AC02-06CH11357 by UChicago Argonne, LLC.
NR 28
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PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0957-4522
EI 1573-482X
J9 J MATER SCI-MATER EL
JI J. Mater. Sci.-Mater. Electron.
PD DEC
PY 2015
VL 26
IS 12
SI SI
BP 9279
EP 9287
DI 10.1007/s10854-015-3025-0
PG 9
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Applied; Physics, Condensed Matter
SC Engineering; Materials Science; Physics
GA CX2KP
UT WOS:000365525900007
ER
PT J
AU Harrison-Felix, C
Pretz, C
Hammond, FM
Cuthbert, JP
Bell, J
Corrigan, J
Miller, AC
Haarbauer-Krupa, J
AF Harrison-Felix, Cynthia
Pretz, Christopher
Hammond, Flora M.
Cuthbert, Jeffrey P.
Bell, Jeneita
Corrigan, John
Miller, A. Cate
Haarbauer-Krupa, Juliet
TI Life Expectancy after Inpatient Rehabilitation for Traumatic Brain
Injury in the United States
SO JOURNAL OF NEUROTRAUMA
LA English
DT Article
DE brain injury; chronic; life expectancy; mortality; rehabilitation
ID SYSTEMS NATIONAL DATABASE; MODEL SYSTEMS; LATE MORTALITY; HEAD-INJURY;
POPULATION; REPRESENTATIVENESS; RISK; CARE
AB This study characterized life expectancy after traumatic brain injury (TBI). The TBI Model Systems (TBIMS) National Database (NDB) was weighted to represent those 16 years of age completing inpatient rehabilitation for TBI in the United States (US) between 2001 and 2010. Analyses included Standardized Mortality Ratios (SMRs), Cox regression, and life expectancy. The US mortality rates by age, sex, race, and cause of death for 2005 and 2010 were used for comparison purposes. Results indicated that a total of 1325 deaths occurred in the weighted cohort of 6913 individuals. Individuals with TBI were 2.23 times more likely to die than individuals of comparable age, sex, and race in the general population, with a reduced average life expectancy of 9 years. Independent risk factors for death were: older age, male gender, less-than-high school education, previously married at injury, not employed at injury, more recent year of injury, fall-related TBI, not discharged home after rehabilitation, less functional independence, and greater disability. Individuals with TBI were at greatest risk of death from seizures; accidental poisonings; sepsis; aspiration pneumonia; respiratory, mental/behavioral, or nervous system conditions; and other external causes of injury and poisoning, compared with individuals in the general population of similar age, gender, and race. This study confirms prior life expectancy study findings, and provides evidence that the TBIMS NDB is representative of the larger population of adults receiving inpatient rehabilitation for TBI in the US. There is an increased risk of death for individuals with TBI requiring inpatient rehabilitation.
C1 [Harrison-Felix, Cynthia; Pretz, Christopher; Cuthbert, Jeffrey P.] Craig Hosp, Res Dept, Englewood, CO 80113 USA.
[Hammond, Flora M.] Rehabil Hosp Indiana, Indianapolis, IN USA.
[Bell, Jeneita; Haarbauer-Krupa, Juliet] Natl Ctr Injury Prevent & Control, Traumat Brain Injury Team, Hlth Syst & Trauma Syst Branch, Div Unintent Injury Prevent,Ctr Dis Control & Pre, Atlanta, GA USA.
[Corrigan, John] Ohio State Univ, Dept Phys Med & Rehabil, Columbus, OH 43210 USA.
[Miller, A. Cate] US DOE, Natl Inst Disabil & Rehabil Res, Washington, DC 20585 USA.
RP Harrison-Felix, C (reprint author), Craig Hosp, Res Dept, 3425 S Clarkson St, Englewood, CO 80113 USA.
EM CHarrison-Felix@craighospital.org
FU US Department of Health and Human Services (HHS) Centers for Disease
Control and Prevention (CDC); US Department of Education's Office of
Special Education and Rehabilitative Services, NIDRR; NIDRR
[H133A110006]; Traumatic Brain Injury Model System Center from NIDRR
[H133A120086, H133A120035]
FX This research was supported by an interagency agreement between the US
Department of Health and Human Services (HHS) Centers for Disease
Control and Prevention (CDC), and the US Department of Education's
Office of Special Education and Rehabilitative Services, NIDRR.
Supplemental funding was provided to the NIDRR-funded Traumatic Brain
Injury Model Systems National Data and Statistical Center (grant no.
H133A110006). The research was also supported by Traumatic Brain Injury
Model System Center grants from NIDRR to Ohio State University (grant
no. H133A120086) and Indiana University (grant no. H133A120035). This
article does not reflect the official policy or opinions of the CDC or
the US Department of HHS and does not constitute an endorsement of the
individuals or their programs - by CDC, HHS, or other components of the
federal government - and none should be inferred. No commercial party
having a direct financial interest in the results of the research
supporting this article has or will confer a benefit upon the authors or
upon any organization with which the authors are associated. This
article is written in Dr. Miller's official capacity as part of the
national conversation on education and does not necessarily represent
the official views of the US Department of Education. The TBI Model
Systems National Database is supported by NIDRR and created and
maintained by the TBI Model Systems Centers Program. However, these
contents do not necessarily reflect the opinions or views of the TBI
Model Systems Centers, NIDRR or the US Department of Education.
NR 28
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PU MARY ANN LIEBERT, INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 0897-7151
EI 1557-9042
J9 J NEUROTRAUM
JI J. Neurotrauma
PD DEC 1
PY 2015
VL 32
IS 23
SI SI
BP 1893
EP 1901
DI 10.1089/neu.2014.3353
PG 9
WC Critical Care Medicine; Clinical Neurology; Neurosciences
SC General & Internal Medicine; Neurosciences & Neurology
GA CX4TW
UT WOS:000365694200006
PM 25057965
ER
PT J
AU Zhang, GM
Zhou, ZJ
Mo, K
Miao, YB
Liu, X
Almer, J
Stubbins, JF
AF Zhang, Guangming
Zhou, Zhangjian
Mo, Kun
Miao, Yinbin
Liu, Xiang
Almer, Jonathan
Stubbins, James F.
TI The evolution of internal stress and dislocation during tensile
deformation in a 9Cr ferritic/martensitic (F/M) ODS steel investigated
by high-energy X-rays
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
DE Synchrotron XRD; Mean internal stress; Dislocation character;
Dislocation density
ID FERRITIC-MARTENSITIC STEELS; PROFILE ANALYSIS; STRAIN; DIFFRACTION;
TEMPERATURE; DENSITY; EUROFER; ALLOY; FERRITE/MARTENSITE; NANOPARTICLES
AB An application of high-energy wide angle synchrotron X-ray diffraction to investigate the tensile deformation of 9Cr ferritic/martensitic (F/M) ODS steel is presented. With tensile loading and in-situ Xray exposure, the lattice strain development of matrix was determined. The lattice strain was found to decrease with increasing temperature, and the difference in Young's modulus of six different reflections at different temperatures reveals the temperature dependence of elastic anisotropy. The mean internal stress was calculated and compared with the applied stress, showing that the strengthening factor increased with increasing temperature, indicating that the oxide nanoparticles have a good strengthening impact at high temperature. The dislocation density and character were also measured during tensile deformation. The dislocation density decreased with increasing of temperature due to the greater mobility of dislocation at high temperature. The dislocation character was determined by best-fit methods for different dislocation average contrasts with various levels of uncertainty. The results shows edge type dislocations dominate the plastic strain at room temperature (RT) and 300 degrees C, while the screw type dislocations dominate at 600 degrees C. The dominance of edge character in 9Cr F/M ODS steels at RT and 300 degrees C is likely due to the pinning effect of nanoparticles for higher mobile edge dislocations when compared with screw dislocations, while the stronger screw type of dislocation structure at 600 degrees C may be explained by the activated cross slip of screw segments. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Zhang, Guangming; Zhou, Zhangjian] Univ Sci & Technol, Sch Mat Sci & Engn, Beijing 100083, Peoples R China.
[Zhang, Guangming; Miao, Yinbin; Liu, Xiang; Stubbins, James F.] Univ Illinois, Dept Nucl Plasma & Radiol Engn, Urbana, IL 61801 USA.
[Mo, Kun] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Almer, Jonathan] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
RP Zhou, ZJ (reprint author), Univ Sci & Technol, Sch Mat Sci & Engn, Beijing 100083, Peoples R China.
EM zhouzhj@mater.ustb.edu.cn
RI Liu, Xiang/D-2005-2017;
OI Liu, Xiang/0000-0002-2634-1888; Miao, Yinbin/0000-0002-3128-4275
FU 973 DOE INL [120293]; U.S. Department of Energy [DEFG02-07ER46453,
DE-FG02-07ER46471]; U.S. DOE [DE-AC02-06CH11357]; National Magnetic
Confinement Fusion Program of China [2015GB121006]
FX This work was supported by 973 DOE INL 120293. The TEM experiments were
carried out in part in the Frederick Seitz Materials Research Laboratory
Central Facilities, University of Illinois, which is partially supported
by the U.S. Department of Energy under grants DEFG02-07ER46453 and
DE-FG02-07ER46471. Argonne National Laboratory's work was supported by
U.S. DOE under Contract No. DE-AC02-06CH11357. The authors also would
like to express their thanks for the financial support of the National
Magnetic Confinement Fusion Program of China under Grant No.
2015GB121006 for samples preparation.
NR 36
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U2 13
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 50
EP 57
DI 10.1016/j.jnucmat.2015.09.014
PN 1
PG 8
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MJ
UT WOS:000365602800005
ER
PT J
AU Chen, TY
Smith, TA
Gigax, JG
Chen, D
Balerio, R
Shao, L
Sencer, BH
Kennedy, JR
AF Chen, Tianyi
Smith, Travis A.
Gigax, Jonathan G.
Chen, Di
Balerio, Robert
Shao, Lin
Sencer, Bulent H.
Kennedy, J. Rory
TI Intermetallic formation and interdiffusion in diffusion couples made of
uranium and single crystal iron
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
DE FCCI; Intermetallic; Grain boundaries; Interdiffusion coefficients;
Kirkendall interface; Intrinsic diffusion coefficients
ID ZR
AB We studied the interfacial phase formation and diffusion kinetics in uraniumeiron diffusion couples. A comparison was made between polycrystalline uranium (U) bonded with polycrystalline iron (Fe-P) and polycrystalline uranium bonded with single crystalline Fe (Fe-SC). After thermal annealing at 575 degrees C, 600 degrees C, 625 degrees C and 650 degrees C, respectively, diffusion and microstructures at the interface were characterized by scanning electron microscopy and transmission electron miscopy. The presence of grain boundaries in iron has a significant influence on interface reactions. In comparison with U-Fe-P system, interdiffusion coefficients of the U-Fe-SC system are significantly lower and were governed by much higher activation energies. Integrated interdiffusion coefficients and intrinsic diffusion coefficients were obtained. The intrinsic diffusion coefficients show faster diffusion of iron atoms in both U6Fe and UFe2 intermetallic phases than uranium. (C) 2015 Published by Elsevier B.V.
C1 [Chen, Tianyi; Smith, Travis A.; Gigax, Jonathan G.; Chen, Di; Balerio, Robert; Shao, Lin] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
[Sencer, Bulent H.; Kennedy, J. Rory] Idaho Natl Lab, Mat & Nucl Fuel Performance, Idaho Falls, ID 83415 USA.
RP Shao, L (reprint author), Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
EM lshao@tamu.edu
OI Chen, Tianyi/0000-0003-2880-824X
FU US Department of Energy under DOE-NE Idaho Operations Office
[DE-AC07-05ID14517]; Advanced Test Reactor - National Scientific User
Facility (ATR-NSUF); Center for Advanced Energy Studies - Microscopy and
Characterization Suite (CAES-MaCS)
FX This work was supported by the US Department of Energy under DOE-NE
Idaho Operations Office Contract DE-AC07-05ID14517. The authors would
like to thank Advanced Test Reactor - National Scientific User Facility
(ATR-NSUF) and the Center for Advanced Energy Studies - Microscopy and
Characterization Suite (CAES-MaCS) for the RTE award using CAES-MaCS
facility.
NR 24
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U1 2
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 82
EP 88
DI 10.1016/j.jnucmat.2015.05.026
PN 1
PG 7
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MJ
UT WOS:000365602800008
ER
PT J
AU Um, W
Yang, JS
Serne, RJ
Westsik, JH
AF Um, Wooyong
Yang, Jung-Seok
Serne, R. Jeffrey
Westsik, Joseph H.
TI Reductive capacity measurement of waste forms for secondary radioactive
wastes
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
DE Reductive capacity; Waste form; Blast furnace slag; Cast stone;
Geopolymer; Ceramicrete
ID IMMOBILIZATION; TECHNETIUM; SULFIDE
AB The reductive capacities of dry ingredients and final solid waste forms were measured using both the Cr(VI) and Ce(IV) methods and the results were compared. Blast furnace slag (BFS), sodium sulfide, SnF2, and SnCl2 used as dry ingredients to make various waste forms showed significantly higher reductive capacities compared to other ingredients regardless of which method was used. Although the BFS exhibits appreciable reductive capacity, it requires greater amounts of time to fully react. In almost all cases, the Ce(IV) method yielded larger reductive capacity values than those from the Cr(VI) method and can be used as an upper bound for the reductive capacity of the dry ingredients and waste forms, because the Ce(IV) method subjects the solids to a strong acid (low pH) condition that dissolves much more of the solids. Because the Cr(VI) method relies on a neutral pH condition, the Cr(VI) method can be used to estimate primarily the waste form surface-related and readily dissolvable reductive capacity. However, the Cr(VI) method does not measure the total reductive capacity of the waste form, the long-term reductive capacity afforded by very slowly dissolving solids, or the reductive capacity present in the interior pores and internal locations of the solids. Published by Elsevier B.V.
C1 [Um, Wooyong; Serne, R. Jeffrey; Westsik, Joseph H.] PNNL, Energy & Environm Directorate, Richland, WA 99354 USA.
[Um, Wooyong] Pohang Univ Sci & Technol POSTECH, Div Adv Nucl Engn, Pohang 790784, South Korea.
[Yang, Jung-Seok] Korea Inst Sci & Technol, Nat Prod Res Ctr, Kangnung 25451, South Korea.
RP Um, W (reprint author), PNNL, Energy & Environm Directorate, 902 Battelle Blvd,P7-54, Richland, WA 99354 USA.
EM Wooyong.um@pnnl.gov
FU Washington River Protection Solutions, LLC, Richland, Washington; U.S.
Department of Energy [DE-AC06-76RLO 1830]
FX The authors acknowledge Washington River Protection Solutions, LLC,
Richland, Washington for the project funding and programmatic guidance.
We also acknowledge Steven Baum, Keith Geiszler, Cristian Iovin, Igor
Kutnyakov, and Dennese Smith in the Geosciences group at PNNL for their
analytical and laboratory support. Pacific Northwest National Laboratory
is a multi-program national laboratory operated by Battelle Memorial
Institute for the U.S. Department of Energy under contract DE-AC06-76RLO
1830.
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U1 4
U2 17
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 251
EP 259
DI 10.1016/j.jnucmat.2015.09.045
PN 1
PG 9
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MJ
UT WOS:000365602800027
ER
PT J
AU Deng, J
Ko, H
Demkowicz, P
Morgan, D
Szlufarska, I
AF Deng, Jie
Ko, Hyunseok
Demkowicz, Paul
Morgan, Dane
Szlufarska, Izabela
TI Grain boundary diffusion of Ag through polycrystalline SiC in TRISO fuel
particles
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
DE Grain boundary diffusion; TRISO fuel particles; Fission product release
ID FISSION-PRODUCT RELEASE; GAS-COOLED REACTORS; SILICON-CARBIDE; SILVER
DIFFUSION; MICROSTRUCTURE; TRANSPORT; BEHAVIOR; IRRADIATION;
PERFORMANCE; SIMULATION
AB The effective diffusivity and release fraction of Ag in polycrystalline SiC are evaluated using a kinetic Monte Carlo model. The effects of various grain boundary network properties on the transport of Ag across the SiC layer have been examined, including fraction of grain boundary type, spread in grain boundary diffusivities and distribution of grain boundary types. It is shown that the effective diffusivity and release fraction of Ag can exhibit a large variability due to changes in the GB structure of SiC, and this variability is almost independent of temperature fluctuation. The present results suggest that the variation in properties of grain boundary networks in SiC may contribute to the spread in the Ag diffusivity and release fraction measured in TRISO particles. It is also found that the grain boundary diffusion alone may be insufficient to account for the Ag diffusivities and release fractions measured in integral release experiments. Additional factors such as irradiation and temperature distribution may also play an important role in Ag transport across the SiC layer. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Deng, Jie; Ko, Hyunseok; Morgan, Dane; Szlufarska, Izabela] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA.
[Demkowicz, Paul] Idaho Natl Lab, Idaho Falls, ID 83414 USA.
[Morgan, Dane; Szlufarska, Izabela] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA.
RP Szlufarska, I (reprint author), Univ Wisconsin, Dept Mat Sci & Engn, 1509 Univ Ave, Madison, WI 53706 USA.
EM szlufarska@wisc.edu
FU DOE Office of Nuclear Energy's Nuclear Energy University Programs
[00089350]
FX This research is being performed using funding received from the DOE
Office of Nuclear Energy's Nuclear Energy University Programs contract
number 00089350.
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PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 332
EP 340
DI 10.1016/j.jnucmat.2015.09.054
PN 1
PG 9
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MJ
UT WOS:000365602800035
ER
PT J
AU Chen, WY
Miao, YB
Wu, YQ
Tomchik, CA
Mo, K
Gan, J
Okuniewski, MA
Maloy, SA
Stubbins, JF
AF Chen, Wei-Ying
Miao, Yinbin
Wu, Yaqiao
Tomchik, Carolyn A.
Mo, Kun
Gan, Jian
Okuniewski, Maria A.
Maloy, Stuart A.
Stubbins, James F.
TI Atom probe study of irradiation-enhanced alpha ' precipitation in
neutron-irradiated Fe-Cr model alloys (vol 462, pg 242, 2015)
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Correction
C1 [Chen, Wei-Ying; Miao, Yinbin; Tomchik, Carolyn A.; Mo, Kun; Stubbins, James F.] Univ Illinois, Dept Nucl Plasma & Radiol Engn, Urbana, IL 61801 USA.
[Wu, Yaqiao] Boise State Univ, Dept Mat Sci & Engn, Boise, ID 83725 USA.
[Wu, Yaqiao] Ctr Adv Energy Studies, Idaho Falls, ID 83401 USA.
[Gan, Jian; Okuniewski, Maria A.] Idaho Natl Lab, Idaho Falls, ID 83401 USA.
[Maloy, Stuart A.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
RP Chen, WY (reprint author), Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
EM wychen@anl.gov
RI Maloy, Stuart/A-8672-2009
OI Maloy, Stuart/0000-0001-8037-1319
NR 1
TC 0
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U1 0
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 392
EP 392
DI 10.1016/j.jnucmat.2015.08.005
PN 1
PG 1
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MJ
UT WOS:000365602800041
ER
PT J
AU Wu, Y
Krstic, P
Zhou, FY
Meyer, F
AF Wu, Yong
Krstic, Predrag
Zhou, Fu Yang
Meyer, Fred
TI Damage at a tungsten surface induced by impacts of self-atoms
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID MOLECULAR-DYNAMICS; DISPLACEMENT; HYDROGEN; SYSTEMS; ENERGY
AB We study evolution of the surface defects of a 300 K tungsten surface due to the cumulative impact of 0.25-10 keV self-atoms. The simulation is performed by molecular dynamics with bond-order Tersoffform potentials. At all studied impact energies the computation shows strong defect-recombination effect of both created Frenkel pairs as well as recombination of the implanted atoms with the vacancies created by the sputtering. This leads to a saturation of the cumulative count of vacancies, evident at energies below 2 keV, as long as the implantation per impact atom exceeds sputtering and to a saturation of the interstitial count when production of the sputtered particles per impact atom becomes larger than 1 (in the energy range 2-4 keV). The number of cumulative defects is fitted as functions of impact fluence and energy, enabling their analytical extrapolation outside the studied range of parameters. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Wu, Yong] Inst Appl Phys & Computat Math, Data Ctr High Energy Dens Phys, Beijing 100088, Peoples R China.
[Krstic, Predrag] SUNY Stony Brook, Inst Adv Computat Sci, Stony Brook, NY 11794 USA.
[Zhou, Fu Yang] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China.
[Meyer, Fred] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Krstic, P (reprint author), SUNY Stony Brook, Inst Adv Computat Sci, Stony Brook, NY 11794 USA.
EM predrag.krstic@stonybrook.edu
FU National Basic Research Program of China [2013CB922200]; National
Natural Science Foundation of China [11474032]; LDRD program of
Princeton Plasma Physics Laboratory [PPPL-044]; LDRD Program of Oak
Ridge National Laboratory [LO6146]
FX Y Wu acknowledges the supports of the National Basic Research Program of
China under Grant No. 2013CB922200 and of National Natural Science
Foundation of China under Grant No. 11474032. PSK acknowledges support
of the LDRD program PPPL-044 of Princeton Plasma Physics Laboratory,
managed by Princeton University, for the U.S. Department of Energy. FWM
and PSK acknowledge support of the LDRD Program LO6146 of Oak Ridge
National Laboratory, managed by UT-Battelle, LLC, for the U.S.
Department of Energy. PSK acknowledges allocation of advanced computing
resources provided by the National Science Foundation and U.S.
Department of Energy, as well as of Handy computing cluster of Institute
of Advanced Computational Science of the Stony Brook University. YW and
FYZ acknowledge use of the "Dawning" supercomputer of the Institute of
Applied Physics and Computational Mathematics, Beijing, China.
NR 28
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U1 4
U2 9
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PI AMSTERDAM
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SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 480
EP 487
DI 10.1016/j.jnucmat.2015.09.049
PN 1
PG 8
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MJ
UT WOS:000365602800057
ER
PT J
AU Zhang, HX
Ren, F
Wang, YQ
Hong, MQ
Xiao, XH
Qin, WJ
Jiang, CZ
AF Zhang, Hongxiu
Ren, Feng
Wang, Yongqiang
Hong, Mengqing
Xiao, Xiangheng
Qin, Wenjing
Jiang, Changzhong
TI In situ TEM observation of helium bubble evolution in V/Ag multilayer
during annealing
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID HE-IMPLANTED CU; GRAIN-BOUNDARIES; ION-IRRADIATION; RADIATION-DAMAGE;
GAS-BUBBLES; METALS; COALESCENCE; TOLERANCE; MIGRATION; GROWTH
AB Multilayers have been considered as promising candidates for nuclear materials. In this paper, an in situ study on the growth of helium bubbles during annealing was performed by transmission electron microscopy. Bubbles in the Ag layers grew rapidly by vacancy absorption mechanism and reached a size comparable to the layer thickness, whereas bubbles in the V layers evolved slowly due to the lower diffusion rate of vacancies and stopped growing at the size of 1.8 nm. The interfaces with more than one orientation relationship in the V/Ag multilayer contained pockets of excess volumes that can readily trap helium and exhibit high helium solubility. The interfaces prevent bubbles from growing into nearby layers. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Zhang, Hongxiu; Ren, Feng; Hong, Mengqing; Xiao, Xiangheng; Qin, Wenjing; Jiang, Changzhong] Wuhan Univ, Sch Phys & Technol, Ctr Ion Beam Applicat, Wuhan 430072, Peoples R China.
[Zhang, Hongxiu; Ren, Feng; Hong, Mengqing; Xiao, Xiangheng; Qin, Wenjing; Jiang, Changzhong] Wuhan Univ, Ctr Elect Microscopy, Wuhan 430072, Peoples R China.
[Wang, Yongqiang] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Ren, F (reprint author), Wuhan Univ, Sch Phys & Technol, Ctr Ion Beam Applicat, Wuhan 430072, Peoples R China.
EM fren@whu.edu.cn
RI Ren, Feng/F-9778-2014;
OI Ren, Feng/0000-0002-9557-5995; xiao, xiangheng/0000-0001-9111-1619
FU Natural Science Foundation of China [11522543, 11475129, 11175133,
91026014]; Foundations from Chinese Ministry of Education
[NCET-13-0438]; Hubei Provincial Natural Science Foundation
[2012FFA042]; Center for Integrated Nanotechnologies; DOE Nanoscience
user facility; Laboratory Directed Research and Development Fund
[20150567ER]
FX The author thanks the Natural Science Foundation of China (11522543,
11475129, 11175133, 91026014), the Foundations from Chinese Ministry of
Education (NCET-13-0438), Hubei Provincial Natural Science Foundation
(2012FFA042) for financial support. Partial support for this
investigation was also provided by Center for Integrated
Nanotechnologies, a DOE Nanoscience user facility, jointly operated by
Los Alamos and Sandia National Laboratories. YQW acknowledges the
support of Laboratory Directed Research and Development Fund (No.
20150567ER) at Los Alamos National Laboratory.
NR 48
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U2 30
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PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 537
EP 543
DI 10.1016/j.jnucmat.2015.10.017
PN 2
PG 7
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600008
ER
PT J
AU Rose, MA
Williamson, MA
Willit, J
AF Rose, M. A.
Williamson, M. A.
Willit, J.
TI Investigation of residual anode material after electrorefining uranium
in molten chloride salt
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID DISSOLUTION; ELECTROLYTE; ALLOY
AB A buildup of material at uranium anodes during uranium electrorefining in molten chloride salts has been observed. Potentiodynamic testing has been conducted using a three electrode cell, with a uranium working electrode in both LiCl/KCl eutectic and LiCl each containing similar to 5 mol% UCl3. The anodic current response was observed at 50 degrees intervals between 450 degrees C and 650 degrees C in the eutectic salt. These tests revealed a buildup of material at the anode in LiCl/KCl salt, which was sampled at room temperature, and analyzed using ICP-MS, XRD and SEM techniques. Examination of the analytical data, current response curves and published phase diagrams has established that as the uranium anode dissolves, the U3+ ion concentration in the diffusion layer surrounding the electrode rises precipitously to levels, which may at low temperatures exceed the solubility limit for UCl3 or in the case of the eutectic salt for K2UCl5. The reduction in current response observed at low temperature in eutectic salt is eliminated at 650 degrees C, where K2UCl5 is absent due to its congruent melting and only simple concentration polarization effects are seen. In LiCl similar concentration effects are seen though significantly longer time at applied potential is required to effect a reduction in the current response as compared to the eutectic salt. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Rose, M. A.] Purdue Univ, Dept Nucl Engn, W Lafayette, IN 47907 USA.
[Rose, M. A.; Williamson, M. A.; Willit, J.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
RP Rose, MA (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM marose@anl.gov
FU U.S. Department of Energy, National Nuclear Security Administration's
(NNSA's) Office of Defense Nuclear Nonproliferation [DE-AC02-06CH11357]
FX The authors acknowledge the technical discussion of this paper with
Perry Motsegood and Magdalena Tylka. The authors also acknowledge Terry
Cruse for his help in SEM sample preparation and analysis. This work was
supported by the U.S. Department of Energy, National Nuclear Security
Administration's (NNSA's) Office of Defense Nuclear Nonproliferation,
under Contract DE-AC02-06CH11357. Argonne National Laboratory is
operated for the U.S. Department of Energy by UChicago Argonne, LLC.
NR 9
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PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 576
EP 581
DI 10.1016/j.jnucmat.2015.10.015
PN 2
PG 6
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600013
ER
PT J
AU Kuhudzai, RJ
Malherbe, JB
Hlatshwayo, TT
van der Berg, NG
Devaraj, A
Zhu, Z
Nandasiri, M
AF Kuhudzai, R. J.
Malherbe, J. B.
Hlatshwayo, T. T.
van der Berg, N. G.
Devaraj, A.
Zhu, Z.
Nandasiri, M.
TI Synergistic effects of iodine and silver ions co-implanted in 6H-SiC
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID COATED PARTICLE FUEL; SILICON-CARBIDE; RADIATION-DAMAGE; AG DIFFUSION;
NEAR-SURFACE; BEHAVIOR; TEMPERATURE; MECHANISMS; TRANSPORT; RELEASE
AB Motivated by the aim of understanding the release of fission products through the SiC coating of fuel kernels in modern high temperature nuclear reactors, a fundamental investigation is conducted to understand the synergistic effects of implanted silver (Ag) and iodine (I) in 6H-SiC. The implantation of the individual species, as well as the co-implantation of 360 keV ions of I and Ag at room temperature in 6H-SiC and their subsequent annealing behaviour has been investigated by Secondary Ion Mass Spectrometry (SIMS), Atom Probe Tomography (APT) and X-ray Photoelectron Spectroscopy (XPS). SIMS and APT measurements indicated the presence of Ag in the co-implanted samples after annealing at 1500 degrees C for 30 h in sharp contrast to the samples implanted with Ag only. In samples implanted with Ag only, complete loss of the implanted Ag was observed. However, for I only implanted samples, some iodine was retained. APT of annealed co-implanted 6H-SiC showed clear spatial association of Ag and I clusters in SiC, which can be attributed to the observed I assisted retention of Ag after annealing. Such detailed studies will be necessary to identify the fundamental mechanism of fission products migration through SiC coatings. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Kuhudzai, R. J.; Malherbe, J. B.; Hlatshwayo, T. T.; van der Berg, N. G.] Univ Pretoria, Dept Phys, Pretoria, South Africa.
[Devaraj, A.; Zhu, Z.; Nandasiri, M.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Kuhudzai, RJ (reprint author), Univ Pretoria, Dept Phys, Pretoria, South Africa.
EM rj.kuhudzai@tuks.co.za
RI Zhu, Zihua/K-7652-2012
FU Department of Energy's Office of Biological and Environmental Research;
Department of Research and Innovation Support, University of Pretoria
FX A portion of the research was performed using EMSL, a national
scientific user facility sponsored by the Department of Energy's Office
of Biological and Environmental Research and located at Pacific
Northwest National Laboratory. Thanks are also due to Prof. E.
Friedland, Dr S. Thevuthasan and Dr. W. Mtangi for the useful
discussions, Dr E. Wendler for facilitating the ion implantations and
The Department of Research and Innovation Support, University of
Pretoria for the funding.
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PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 582
EP 587
DI 10.1016/j.jnucmat.2015.10.029
PN 2
PG 6
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600014
ER
PT J
AU McMurray, JW
Hirooka, S
Murakami, T
Suzuki, K
White, JT
Voit, SL
Nelson, AT
Slone, BW
Besmann, TM
McClellan, KJ
Kato, M
AF McMurray, J. W.
Hirooka, S.
Murakami, T.
Suzuki, K.
White, J. T.
Voit, S. L.
Nelson, A. T.
Slone, B. W.
Besmann, T. M.
McClellan, K. J.
Kato, M.
TI Thermodynamic assessment of the oxygen rich U-Ce-O system
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
DE UO2 +/- x; Uranium; Cerium; Oxygen; Compound energy formalism; Calphad;
Oxygen potential; Phase equilibria
ID OXIDE; NONSTOICHIOMETRY; OXIDATION; BEHAVIOR; FUELS
AB A thermodynamic assessment of the U-Ce-O system was performed by combining the existing Calphad assessments of the U-O and Ce-O binaries. A compound energy formalism representation for the fluorite U1-yCeyO2 +/- x and a partially ionic two-sublattice liquid model for U-Ce-O melt were developed to describe the ternary solutions. Oxygen potentials for U1-yCeyO2 +/- x for 0.05, 0.20, 0.30, and 0.50 Ce metal fractions were measured from thermogravimetric analysis and used, along with other thermodynamic data reported in the literature, to optimize the adjustable parameters of the models for U1-yCeyO2 +/- x and the U-Ce-O ternary liquid. In addition, the thermochemical behavior of U1-yCeyO2 +/- x and U1-yPuyO2 +/- x was compared in order to assess the suitability of using Ce as a surrogate for Pu in MOX fuel. (C) 2015 Elsevier B.V. All rights reserved.
C1 [McMurray, J. W.; Slone, B. W.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Hirooka, S.; Murakami, T.; Suzuki, K.; Kato, M.] Japan Atom Energy Agcy, Fuel Technol Dept, Plutonium Fuel Dev Ctr, Nucl Fuel Cycle Engn Labs, Tokai, Ibaraki 3191194, Japan.
[White, J. T.; Voit, S. L.; Nelson, A. T.; McClellan, K. J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Besmann, T. M.] Univ S Carolina, Coll Engn & Comp, Dept Mech Engn, Columbia, SC 29208 USA.
RP McMurray, JW (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM mcmurrayjw1@ornl.gov
OI McMurray, Jacob/0000-0001-5111-3054; Nelson, Andrew/0000-0002-4071-3502
FU US Department of Energy, Office of Nuclear Energy Fuel Cycle Technology
Program
FX The authors would like to thank Ryan Cooper and Yan Zhou of Oak Ridge
National Laboratory for helpful comments. The authors would also like to
acknowledge John Dunwoody and Darrin Byler for assistance with sample
preparation at LANL. The work was supported by the US Department of
Energy, Office of Nuclear Energy Fuel Cycle Technology Program.
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SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 588
EP 600
DI 10.1016/j.jnucmat.2015.10.008
PN 2
PG 13
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600015
ER
PT J
AU Park, JY
Kim, IH
Motta, AT
Ulmer, CJ
Kirk, MA
Ryan, EA
Baldo, PM
AF Park, Jeong-Yong
Kim, Il-Hyun
Motta, Arthur T.
Ulmer, Christopher J.
Kirk, Marquis A., Jr.
Ryan, Edward A.
Baldo, Peter M.
TI Irradiation-induced disordering and amorphization of Al3Ti-based
intermetallic compounds
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID ELECTRON-IRRADIATION; TEMPERATURE; L12; OXIDATION; ALLOYS; AL3TI; DO22
AB An in situ ion-irradiation study, simultaneously examined using transmission electron microscopy, was performed to investigate irradiation-induced disordering and amorphization of Al3Ti-based intermetallic compounds. Thin foil samples of two crystalline structures: D0(22)-structured Al3Ti and L1(2)-structured (Al,Cr)(3)Ti were irradiated using 1.0 MeV Kr ions at a temperature range from 40 K to 573 K to doses up to 4.06 x 10(15) ions/cm(2). The results showed that both the compounds underwent an order-disorder transformation under irradiation, where both Al3Ti and (Al,Cr)(3)Ti ordered structures were fully transformed to the disordered face-centered cubic (FCC) structure except at the highest irradiation temperature of 573 K. A slightly higher irradiation dose was required for order-disorder transformation in case of Al3Ti as compared to (Al,Cr)(3)Ti at a given temperature. However, their amorphization resistances were different: while the disordered FCC (Al,Cr)(3)Ti amorphized at the irradiation dose of 6.25 x 10(14) ions/cm(2) (0.92 dpa) at 40 K and 100 K, the Al3Ti compound with the same disordered FCC structure maintained crystallinity up to 4.06 x 10(15) ions/cm(2) (5.62 dpa) at 40 K. The critical temperature for amorphization of (Al,Cr)(3)Ti under Kr ion irradiation is likely between 100 K and room temperature and the critical temperature for disordering between room temperature and 573 K. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Park, Jeong-Yong; Kim, Il-Hyun] Korea Atom Energy Res Inst, LWR Fuel Technol Div, Taejon 305353, South Korea.
[Motta, Arthur T.; Ulmer, Christopher J.] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
[Kirk, Marquis A., Jr.; Ryan, Edward A.; Baldo, Peter M.] Argonne Natl Lab, Nucl Engn Div, Elect Microscopy Ctr, Argonne, IL 60439 USA.
RP Park, JY (reprint author), Korea Atom Energy Res Inst, LWR Fuel Technol Div, 989-111 Daedeok Daero, Taejon 305353, South Korea.
EM parkjy@kaeri.re.kr
NR 21
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PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 601
EP 606
DI 10.1016/j.jnucmat.2015.10.025
PN 2
PG 6
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600016
ER
PT J
AU Dong, Y
Sencer, BH
Garner, FA
Marquis, EA
AF Dong, Y.
Sencer, B. H.
Garner, F. A.
Marquis, E. A.
TI Microchemical and microstructural evolution of AISI 304 stainless steel
irradiated in EBR-II at PWR-relevant dpa rates
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
DE 304 stainless steel; Neutron irradiation; Void swelling; Precipitation;
Segregation; Atom probe tomography
ID RADIATION-INDUCED SEGREGATION; AUSTENITIC STAINLESS-STEELS; GIBBSIAN
INTERFACIAL EXCESS; GRAIN-BOUNDARY SEGREGATION; 3-DIMENSIONAL
ATOM-PROBE; NEUTRON-IRRADIATION; DISPLACEMENT RATES; SOLUTE SEGREGATION;
PHASE-STABILITY; TERNARY ALLOYS
AB AISI 304 stainless steel was irradiated at 416 degrees C and 450 degrees C at a 4.4 x 10(-9) and 3.05 x 10(-7) dpa/s to similar to 0.4 and similar to 28 dpa, respectively, in the reflector of the EBR-II fast reactor. Both unirradiated and irradiated conditions were examined using standard and scanning transmission electron microscopy, energy dispersive spectroscopy, and atom probe tomography on very small specimens produced by focused ion beam milling. These results are compared with previous electron microscopy examination of 3 mm disks from essentially the same material. By comparing a very low dose specimen with a much higher dose specimen, both derived from a single reactor assembly, it has been demonstrated that the coupled microstructural and microchemical evolution of dislocation loops and other sinks begins very early, with elemental segregation producing at these sinks what appears to be measurable precursors to fully formed precipitates found at higher doses. The nature of these sinks and their possible precursors are examined in detail. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Dong, Y.; Marquis, E. A.] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
[Sencer, B. H.] Idaho Natl Lab, Idaho Falls, ID 83402 USA.
[Garner, F. A.] Radiat Effects Consulting, Richland, WA 99354 USA.
RP Marquis, EA (reprint author), Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
EM emarq@umich.edu
RI Marquis, Emmanuelle/O-5647-2014
OI Marquis, Emmanuelle/0000-0002-6476-2835
FU Advanced Test Reactor National Scientific User Facility U.S. Department
of Energy, Office of Nuclear Energy under DOE Idaho Operations Office
[DE-AC07-051D14517]
FX This work was supported by the Advanced Test Reactor National Scientific
User Facility U.S. Department of Energy, Office of Nuclear Energy under
DOE Idaho Operations Office Contract DE-AC07-051D14517. The authors are
grateful for the strong support of Paula Freyer of Westinghouse Electric
Company in Pittsburgh to prepare and ship both unirradiated and
irradiated specimens to the Center of Advanced Energy Studies (CAES) and
to Joanna Taylor of CAES for her assistance with handling these
specimens.
NR 77
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PI AMSTERDAM
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SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 692
EP 702
DI 10.1016/j.jnucmat.2015.10.041
PN 2
PG 11
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600026
ER
PT J
AU Yamamoto, Y
Pint, BA
Terrani, KA
Field, KG
Yang, Y
Snead, LL
AF Yamamoto, Y.
Pint, B. A.
Terrani, K. A.
Field, K. G.
Yang, Y.
Snead, L. L.
TI Development and property evaluation of nuclear grade wrought FeCrAl fuel
cladding for light water reactors
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
DE Nuclear grade; Wrought; FeCrAl; Accident tolerant fuel cladding; LWR
ID CR-AL ALLOYS; HIGH-TEMPERATURE OXIDATION; ACCIDENT-TOLERANT FUELS;
ALUMINA-FORMING ALLOYS; STAINLESS-STEELS; CANDIDATE MATERIALS;
MARTENSITIC STEELS; NORMAL OPERATION; STEAM; EMBRITTLEMENT
AB Development of nuclear grade, iron-based wrought FeCrAl alloys has been initiated for light water reactor (LWR) fuel cladding to serve as a substitute for zirconium-based alloys with enhanced accident tolerance. Ferritic alloys with sufficient chromium and aluminum additions can exhibit significantly improved oxidation kinetics in high-temperature steam environments when compared to zirconium-based alloys. In the first phase, a set of model FeCrAl alloys containing 10-20Cr, 3-5Al, and 0-0.12Y in weight percent, were prepared by conventional arc-melting and hot-working processes to explore the effect of composition on the properties of FeCrAlY alloys. It was found that the tensile properties were insensitive to the alloy compositions studied; however, the steam oxidation resistance strongly depended on both the chromium and the aluminum contents. The second phase development focused on strengthening Fe-13Cr-5Al with minor alloying additions of molybdenum, niobium, and silicon. Combined with an optimized thermo-mechanical treatment, a thermally stable microstructure was produced with improved tensile properties at temperatures up to 741 degrees C. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Yamamoto, Y.; Pint, B. A.; Terrani, K. A.; Field, K. G.; Yang, Y.; Snead, L. L.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Yamamoto, Y (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM yamamotoy@ornl.gov
RI Pint, Bruce/A-8435-2008; Yang, Ying/E-5542-2017
OI Pint, Bruce/0000-0002-9165-3335; Yang, Ying/0000-0001-6480-2254
FU U.S. Department of Energy's Office of Nuclear Energy, Advanced Fuel
Campaign of the Fuel Cycle RD program; Scientific User Facilities
Division, Office of Basic Energy Sciences, U.S. Department of Energy
FX Authors would like to acknowledge D. Harper, G. Cox, J. Mayotte, T.
Geer, E. Manneschmidt, and A. Zinkle for their technical support, and D.
Hoelzer and S. Dryepondt for their fruitful discussions. This research
was funded by the U.S. Department of Energy's Office of Nuclear Energy,
Advanced Fuel Campaign of the Fuel Cycle R&D program. ORNL's Center for
Nanophase Materials Sciences, CNMS, which is sponsored by the Scientific
User Facilities Division, Office of Basic Energy Sciences, U.S.
Department of Energy, is also acknowledged.
NR 51
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SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 703
EP 716
DI 10.1016/j.jnucmat.2015.10.019
PN 2
PG 14
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600027
ER
PT J
AU Aitkaliyeva, A
Madden, JW
Miller, BD
Papesch, CA
Cole, JI
AF Aitkaliyeva, Assel
Madden, James W.
Miller, Brandon D.
Papesch, Cynthia A.
Cole, James I.
TI TEM examination of phases formed between U-Pu-Zr fuel and Fe
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
DE Metal fuel; U-Pu-Zr; Fuel-cladding chemical interaction (FCCI)
ID CONSTITUENT REDISTRIBUTION; ZIRCONIUM; ALLOYS; INTERDIFFUSION;
TEMPERATURES; SYSTEM
AB Exposure to high temperatures and irradiation results in interaction and interdiffusion between fuel and cladding constituents that can lead to formation of undesirable brittle or low-melting point phases. A diffusion couple study has been conducted to understand fuel-cladding interaction occurring between U-22Pu-4Zr (in wt%) fuel and pure Fe at elevated temperatures. The phases formed within fuel cladding chemical interaction (FCCI) layer have been characterized in the transmission electron microscope (TEM). The phases formed within FCCI layer have been identified as Fe2U (Fd-3m), FeU6 (I4/mcm), Fe2Zr (Fd-3m), FeZr2 (I4/mcm), Fe2Pu (Fd-3m), UZr2 (P6/mmm), beta-Zr (Im-3m), and ZrO2 (Fm-3m). Published by Elsevier B.V.
C1 [Aitkaliyeva, Assel; Madden, James W.; Miller, Brandon D.; Papesch, Cynthia A.; Cole, James I.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Aitkaliyeva, A (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
EM assel.aitkaliyeva@inl.gov
OI Aitkaliyeva, Assel/0000-0003-1481-6804; Cole, James/0000-0003-1178-5846
FU U.S. Department of Energy, under DOE Idaho Operations Office
[DE-AC07-05ID14517]; Fuel Cycle Research and Development (FCRD) program
of US Department of Energy; Nuclear Science User Facilities (NSUF)
FX This work is supported by the U.S. Department of Energy, under DOE Idaho
Operations Office Contract DE-AC07-05ID14517, as part of Fuel Cycle
Research and Development (FCRD) program of US Department of Energy and
Nuclear Science User Facilities (NSUF).
NR 20
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U1 4
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 717
EP 723
DI 10.1016/j.jnucmat.2015.10.043
PN 2
PG 7
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600028
ER
PT J
AU Whiting, CE
Du, MT
Felker, LK
Wham, RM
Barklay, CD
Kramer, DP
AF Whiting, Christofer E.
Du, Miting
Felker, L. Kevin
Wham, Robert M.
Barklay, Chadwick D.
Kramer, Daniel P.
TI Kinetics of the high temperature oxygen exchange reaction on
(PuO2)-Pu-238 powder
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
DE Oxygen exchange; Kinetics; Internal chemical reaction; Surface exchange;
Surface mobility; Plutonium (IV) oxide
ID CHEMICAL THERMODYNAMIC REPRESENTATION; OXIDE SURFACES; CERIA
NANOPARTICLES; ISOTOPIC EXCHANGE; CERIUM(IV) OXIDE; CEO2; CATALYSTS;
DIFFUSION; ACTIVATION; U1-ZPUZOW
AB Oxygen exchange reactions performed on PuO2 suggest the reaction is influenced by at least three mechanisms: an internal chemical reaction, surface mobility of active species/defects, and surface exchange of gaseous oxygen with lattice oxygen. Activation energies for the surface mobility and internal chemical reaction are presented. Determining which mechanism is dominant appears to be a complex function including at least specific surface area and temperature. Thermal exposure may also impact the oxygen exchange reaction by causing reductions in the specific surface area of PuO2. Previous CeO2 surrogate studies exhibit similar behavior, confirming that CeO2 is a good qualitative surrogate for PuO2, in regards to the oxygen exchange reaction. Comparison of results presented here with previous work on the PuO2 oxygen exchange reaction allows complexities in the previous work to be explained. These explanations allowed new conclusions to be drawn, many of which confirm the conclusions presented here. (C) 2015 Elsevier B.V. All rights reserved.
C1 [Whiting, Christofer E.; Barklay, Chadwick D.; Kramer, Daniel P.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Du, Miting; Felker, L. Kevin; Wham, Robert M.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Whiting, CE (reprint author), Univ Dayton, Res Inst, 300 Coll Pk, Dayton, OH 45469 USA.
EM chris.whiting@udri.udayton.edu
OI Whiting, Christofer/0000-0001-8754-2133
FU U.S. Department of Energy [DE-NE0000422, DE-AC0500OR22725]
FX The University of Dayton Research Institute was funded by the U.S.
Department of Energy under contract #: DE-NE0000422. Oak Ridge National
Laboratory was funded by the U.S. Department of Energy under contract #:
DE-AC0500OR22725. The authors would like to acknowledge Raymond Vedder
from Oak Ridge National Laboratory for some technical assistance with
performing the oxygen exchange experiments. Additional thanks goes to
Dr. Michael Stoll and Lia Brodnax of Los Alamos National Laboratory for
useful discussions regarding the impacts of this work to the
238PuO2 heat source program.
NR 46
TC 0
Z9 0
U1 3
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 770
EP 777
DI 10.1016/j.jnucmat.2015.10.020
PN 2
PG 8
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600033
ER
PT J
AU Moore, AP
Beeler, B
Deo, C
Baskes, MI
Okuniewski, MA
AF Moore, A. P.
Beeler, B.
Deo, C.
Baskes, M. I.
Okuniewski, M. A.
TI Atomistic modeling of high temperature uranium-zirconium alloy structure
and thermodynamics
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID EMBEDDED-ATOM METHOD; METHOD INTERATOMIC POTENTIALS; U-ZR ALLOYS; 1ST
PRINCIPLES CALCULATIONS; MONTE-CARLO SIMULATION; CRYSTAL ELASTIC MODULI;
POINT-DEFECT DIFFUSION; HEAT-CAPACITY; TRANSITION-METALS; THERMOPHYSICAL
PROPERTIES
AB A semi-empirical Modified Embedded Atom Method (MEAM) potential is developed for application to the high temperature body-centered-cubic uranium-zirconium alloy (gamma-U-Zr) phase and employed with molecular dynamics (MD) simulations to investigate the high temperature thermo-physical properties of U-Zr alloys. Uranium-rich U-Zr alloys (e.g. U-10Zr) have been tested and qualified for use as metallic nuclear fuel in U.S. fast reactors such as the Integral Fast Reactor and the Experimental Breeder Reactors, and are a common sub-system of ternary metallic alloys like U-Pu-Zr and U-Zr-Nb. The potential was constructed to ensure that basic properties (e.g., elastic constants, bulk modulus, and formation energies) were in agreement with first principles calculations and experimental results. After which, slight adjustments were made to the potential to fit the known thermal properties and thermodynamics of the system. The potentials successfully reproduce the experimental melting point, enthalpy of fusion, volume change upon melting, thermal expansion, and the heat capacity of pure U and Zr. Simulations of the U-Zr system are found to be in good agreement with experimental thermal expansion values, Vegard's law for the lattice constants, and the experimental enthalpy of mixing. This is the first simulation to reproduce the experimental thermodynamics of the high temperature gamma-U-Zr metallic alloy system. The MEAM potential is then used to explore thermodynamics properties of the high temperature U-Zr system including the constant volume heat capacity, isothermal compressibility, adiabatic index, and the Gruneisen parameters. Published by Elsevier B.V.
C1 [Moore, A. P.; Beeler, B.; Deo, C.] Georgia Inst Technol, Atlanta, GA 30332 USA.
[Beeler, B.] Univ Calif Davis, Davis, CA 95616 USA.
[Baskes, M. I.] Mississippi State Univ, Mississippi State, MS 39762 USA.
[Baskes, M. I.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Baskes, M. I.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Okuniewski, M. A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Okuniewski, M. A.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Moore, AP (reprint author), Georgia Inst Technol, 770 State St, Atlanta, GA 30332 USA.
EM amoore31@gatech.edu
FU Idaho National Laboratory (INL)
FX Many thanks to Idaho National Laboratory (INL) for their financial
support and to the computational materials group at the University of
Wisconsin for their DOS data for the gamma-U-Zr alloys.
NR 230
TC 1
Z9 1
U1 8
U2 28
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD DEC
PY 2015
VL 467
BP 802
EP 819
DI 10.1016/j.jnucmat.2015.10.016
PN 2
PG 18
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA CX3MR
UT WOS:000365603600036
ER
PT J
AU Jung, D
Albright, BJ
Yin, L
Gautier, DC
Dromey, B
Shah, R
Palaniyappan, S
Letzring, S
Wu, HC
Shimada, T
Johnson, RP
Habs, D
Roth, M
Fernandez, JC
Hegelich, BM
AF Jung, D.
Albright, B. J.
Yin, L.
Gautier, D. C.
Dromey, B.
Shah, R.
Palaniyappan, S.
Letzring, S.
Wu, H. -C.
Shimada, T.
Johnson, R. P.
Habs, D.
Roth, M.
Fernandez, J. C.
Hegelich, B. M.
TI Scaling of ion energies in the relativistic-induced transparency regime
SO LASER AND PARTICLE BEAMS
LA English
DT Article
DE Laser-driven acceleration; Laser-plasma interactions; Laser-produced
plasma; Particle-in-cell method; Plasma simulation
ID PROTON-BEAMS; LASER-PULSES; THIN FOIL; ACCELERATION; ELECTRON; DYNAMICS;
DRIVEN; IGNITION; TARGETS; PLASMAS
AB Experimental data are presented showing maximum carbon C6+ ion energies obtained from nm-scaled targets in the relativistic transparent regime for laser intensities between 9 x 10(19) and 2 x 10(21) W/cm(2). When combined with two-dimensional particle-in-cell simulations, these results show a steep linear scaling for carbon ions with the normalized laser amplitude a(0) (a(0) proportional to root(1)). The results are in good agreement with a semi-analytic model that allows one to calculate the optimum thickness and the maximum ion energies as functions of a(0) and the laser pulse duration for ion acceleration in the relativistic-induced transparency regime. Following our results, ion energies exceeding 100 MeV/amu may be accessible with currently available laser systems.
C1 [Jung, D.; Albright, B. J.; Yin, L.; Gautier, D. C.; Shah, R.; Palaniyappan, S.; Letzring, S.; Wu, H. -C.; Shimada, T.; Johnson, R. P.; Fernandez, J. C.; Hegelich, B. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Jung, D.; Dromey, B.] Queens Univ Belfast, Ctr Plasma Phys, Belfast BT7 1NN, Antrim, North Ireland.
[Roth, M.] Tech Univ Darmstadt, Dept Phys, D-64289 Darmstadt, Germany.
[Habs, D.] Univ Munich, Dept Phys, D-85748 Garching, Germany.
RP Jung, D (reprint author), Queens Univ Belfast, Ctr Plasma Phys, Belfast BT7 1NN, Antrim, North Ireland.
EM daniel.jung@outlook.com
RI Fernandez, Juan/H-3268-2011;
OI Fernandez, Juan/0000-0002-1438-1815; Albright,
Brian/0000-0002-7789-6525; Yin, Lin/0000-0002-8978-5320
FU DOE OFES; Deutsche Forschungsgemeinschaft (DFG) Transregio [SFB TR18]
FX We are grateful for the support of the Trident laser team. The VPIC
simulations were run on the LANL Roadrunner supercomputer. Work was
supported by: DOE OFES, Deutsche Forschungsgemeinschaft (DFG) Transregio
SFB TR18, Cluster of Excellence (MAP). Work performed under the auspices
of the U.S. Department of Energy by the Los Alamos National Security,
LLC, Los Alamos National Laboratory.
NR 50
TC 3
Z9 3
U1 3
U2 14
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0263-0346
EI 1469-803X
J9 LASER PART BEAMS
JI Laser Part. Beams
PD DEC
PY 2015
VL 33
IS 4
BP 695
EP 703
DI 10.1017/S0263034615000828
PG 9
WC Physics, Applied
SC Physics
GA CX5HC
UT WOS:000365731700012
ER
PT J
AU Finnell, J
AF Finnell, Joshua
TI Hunters in the Dark
SO LIBRARY JOURNAL
LA English
DT Book Review
C1 [Finnell, Joshua] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Finnell, J (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU REED BUSINESS INFORMATION
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010 USA
SN 0363-0277
J9 LIBR J
JI Libr. J.
PD DEC
PY 2015
VL 140
IS 20
BP 122
EP 124
PG 3
WC Information Science & Library Science
SC Information Science & Library Science
GA CX2XG
UT WOS:000365559500105
ER
PT J
AU Uphoff, H
AF Uphoff, Heidi
TI The Hundred-Year Walk: An Armenian Odyssey
SO LIBRARY JOURNAL
LA English
DT Book Review
C1 [Uphoff, Heidi] Sandia Natl Labs, Albuquerque, NM 87123 USA.
RP Uphoff, H (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU REED BUSINESS INFORMATION
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010 USA
SN 0363-0277
J9 LIBR J
JI Libr. J.
PD DEC
PY 2015
VL 140
IS 20
BP 145
EP 145
PG 1
WC Information Science & Library Science
SC Information Science & Library Science
GA CX2XG
UT WOS:000365559500193
ER
PT J
AU Clowers, KJ
Will, JL
Gasch, AP
AF Clowers, Katie J.
Will, Jessica L.
Gasch, Audrey P.
TI A unique ecological niche fosters hybridization of oak-tree and vineyard
isolates of Saccharomyces cerevisiae
SO MOLECULAR ECOLOGY
LA English
DT Article
DE allele-specific expression; ecological divergence; environmental stress;
hybridization
ID DNA-SEQUENCING DATA; REPRODUCTIVE ISOLATION; GENE-EXPRESSION;
SPORULATION EFFICIENCY; NATURAL-POPULATIONS; CLIMATE-CHANGE; YEAST;
GENOME; ENVIRONMENTS; ADAPTATION
AB Differential adaptation to distinct niches can restrict gene flow and promote population differentiation within a species. However, in some cases the distinction between niches can collapse, forming a hybrid niche with features of both environments. We previously reported that distinctions between vineyards and oak soil present an ecological barrier that restricts gene flow between lineages of Saccharomyces cerevisiae. Vineyard isolates are tolerant to stresses associated with grapes while North American oak strains are particularly tolerant to freeze-thaw cycles. Here, we report the isolation of S.cerevisiae strains from Wisconsin cherry trees, which display features common to vineyards (e.g. high sugar concentrations) and frequent freeze-thaw cycles. Genome sequencing revealed that the isolated strains are highly heterozygous and represent recent hybrids of the oakxvineyard lineages. We found that the hybrid strains are phenotypically similar to vineyard strains for some traits, but are more similar to oak strains for other traits. The cherry strains were exceptionally good at growing in cherry juice, raising the possibility that they have adapted to this niche. We performed transcriptome profiling in cherry, oak and vineyard strains and show that the cherry-tree hybrids display vineyard-like or oak-like expression, depending on the gene sets, and in some cases, the expression patterns linked back to shared stress tolerances. Allele-specific expression in these natural hybrids suggested concerted cis-regulatory evolution at sets of functionally regulated genes. Our results raise the possibility that hybridization of the two lineages provides a genetic solution to the thriving in this unique niche.
C1 [Clowers, Katie J.; Will, Jessica L.; Gasch, Audrey P.] Univ Wisconsin, Genet Lab, Madison, WI 53706 USA.
[Gasch, Audrey P.] Great Lakes Bioenergy Res Ctr, Madison, WI 53704 USA.
RP Gasch, AP (reprint author), Univ Wisconsin, Genet Lab, 425-G Henry Mall, Madison, WI 53706 USA.
EM agasch@wisc.edu
FU Department of Energy (DOE) Great Lakes Bioenergy Research Center (DOE
Office of Biological and Environmental Research Office of Science)
[DE-FC02-07ER64494]; National Institutes of Health [T32HG002760];
UW-Madison Genetics Program [T32GM007133-36, T32GM007133-39]; SciMed
Graduate Research Scholars
FX We thank Justin Fay for strains and James Hose and Justin Heilberger for
experimental support. This work was supported in part by the Department
of Energy (DOE) Great Lakes Bioenergy Research Center (DOE Office of
Biological and Environmental Research Office of Science)
(DE-FC02-07ER64494). KJC was supported by a National Institutes of
Health fellowship to the Genomics Sciences Training Program
(T32HG002760) and to the UW-Madison Genetics Program (T32GM007133-36 and
T32GM007133-39), as well as a fellowship from the SciMed Graduate
Research Scholars.
NR 66
TC 1
Z9 1
U1 1
U2 8
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0962-1083
EI 1365-294X
J9 MOL ECOL
JI Mol. Ecol.
PD DEC
PY 2015
VL 24
IS 23
BP 5886
EP 5898
DI 10.1111/mec.13439
PG 13
WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology
SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology;
Evolutionary Biology
GA CX5QK
UT WOS:000365756900013
PM 26518477
ER
PT J
AU Cross, JO
Opila, RL
Boyd, IW
Kaufmann, EN
AF Cross, J. O.
Opila, R. L.
Boyd, I. W.
Kaufmann, E. N.
TI Materials characterization and the evolution of materials
SO MRS BULLETIN
LA English
DT Article
ID DOPED GAN; ULTRANANOCRYSTALLINE DIAMOND; MICROWAVE OSCILLATIONS;
GRAIN-REFINEMENT; COMPOUND SYSTEM; HIGH-PRESSURE; SUPERCONDUCTIVITY;
FILMS; SEMICONDUCTORS; SOLIDIFICATION
AB The materials characterization universe is as large and multifaceted as the materials and engineering fields combined. Many methods have evolved over decades, or even centuries, from quite rudimentary tools to extremely sophisticated instruments. Measurement and testing of materials span properties from mechanical, to electrical, to thermal; materials classes from metals, to semiconductors, to insulators, with ceramics, polymers, and composites somewhere in between; scales from atomic through nano-, micro-, meso-, and macroscopic; and times spanning picoseconds to years in practice, to eons in simulation. The technical context of a materials measurement ranges from fundamental science, often with no immediately transparent connection, to future engineering applications, to quite practical real-world field tests that can predict performance andone hopesprevent component failure. Materials measurement methods have grown out of distinct disciplinary homes: physics, chemistry, metallurgy, and, more recently, biology and environmental science. Drawing from the broad expanse of materials characterization techniques, we offer a perspective on that breadth and cite examples that are illustrative of the crucial role such techniques have played and are playing in the technologies of today.
C1 [Cross, J. O.; Kaufmann, E. N.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Opila, R. L.] Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA.
[Opila, R. L.] Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA.
[Opila, R. L.] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA.
[Boyd, I. W.] Brunel Univ London, Mat, Uxbridge, Middx, England.
[Boyd, I. W.] Brunel Univ London, Expt Tech Ctr, Uxbridge, Middx, England.
RP Cross, JO (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA.
EM jox@anl.gov; opila@udel.edu; ian.boyd@brunel.ac.uk; eltonk@anl.gov
OI boyd, ian/0000-0001-6384-4890
NR 95
TC 1
Z9 1
U1 3
U2 20
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0883-7694
EI 1938-1425
J9 MRS BULL
JI MRS Bull.
PD DEC
PY 2015
VL 40
IS 12
BP 1019
EP 1033
DI 10.1557/mrs.2015.271
PG 15
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA CX5LY
UT WOS:000365744400003
ER
PT J
AU Crabtree, G
Kocs, E
Trahey, L
AF Crabtree, George
Kocs, Elizabeth
Trahey, Lynn
TI The energy-storage frontier: Lithium-ion batteries and beyond
SO MRS BULLETIN
LA English
DT Article
DE energy storage; Li; C; ionic conductor; intercalation
ID POSITIVE-ELECTRODE MATERIALS; LI-ION; RECHARGEABLE BATTERIES; CATHODE
MATERIALS; INTERCALATION CHEMISTRY; SECONDARY BATTERIES; RECENT
PROGRESS; METAL ANODES; PERFORMANCE; INSERTION
AB Materials play a critical enabling role in many energy technologies, but their development and commercialization often follow an unpredictable and circuitous path. In this article, we illustrate this concept with the history of lithium-ion (Li-ion) batteries, which have enabled unprecedented personalization of our lifestyles through portable information and communication technology. These remarkable batteries enable the widespread use of laptop and tablet computers, access to entertainment on portable devices such as hand-held music players and video game consoles, and enhanced communication and networking on personal devices such as cellular telephones and watches. A similar transformation of transportation to electric cars and of the electricity grid to widespread deployment of variable renewable solar and wind generation, effortless time-shifting of energy generation and demand, and a transition from central to distributed energy services requires next-generation energy storage that delivers much higher performance at lower cost. The path to these next-generation batteries is likely to be as circuitous and unpredictable as the path to today's Li-ion batteries. We analyze the performance and cost improvements needed to transform transportation and the electricity grid, and we evaluate the outlook for meeting these needs with next-generation beyond Li-ion batteries.
C1 [Crabtree, George; Trahey, Lynn] Argonne Natl Lab, Argonne, IL 60439 USA.
[Crabtree, George; Kocs, Elizabeth] Univ Illinois, Chicago, IL 60680 USA.
RP Crabtree, G (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA.
EM crabtree@anl.gov; ekocs@uic.edu; trahey@anl.gov
FU Joint Center for Energy Storage Research, an Energy Innovation Hub - US
Department of Energy, Office of Science, Basic Energy Sciences; Argonne,
a US Department of Energy Office of Science laboratory
[DE-AC02-06CH11357]
FX This work was supported as part of the Joint Center for Energy Storage
Research, an Energy Innovation Hub funded by the US Department of
Energy, Office of Science, Basic Energy Sciences. The submitted
manuscript was created by UChicago Argonne, LLC, Operator of Argonne
National Laboratory ("Argonne"). Argonne, a US Department of Energy
Office of Science laboratory, is operated under Contract
DE-AC02-06CH11357. We also thank Stan Whittingham, Mike Thackeray, Kevin
Gallagher, and Venkat Srinivasan for valuable discussions on the history
and postcommercialization development of Li-ion batteries.
NR 78
TC 11
Z9 11
U1 24
U2 81
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0883-7694
EI 1938-1425
J9 MRS BULL
JI MRS Bull.
PD DEC
PY 2015
VL 40
IS 12
BP 1067
EP 1078
DI 10.1557/mrs.2015.259
PG 12
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA CX5LY
UT WOS:000365744400007
ER
PT J
AU Koehl, WF
Seo, H
Galli, G
Awschalom, DD
AF Koehl, William F.
Seo, Hosung
Galli, Giulia
Awschalom, David D.
TI Designing defect spins for wafer-scale quantum technologies
SO MRS BULLETIN
LA English
DT Review
DE spintronic; diamond; defects; electronic structure
ID SOLID-STATE SPIN; NUCLEAR-MAGNETIC-RESONANCE; SILICON-CARBIDE;
ROOM-TEMPERATURE; SINGLE SPINS; COHERENT CONTROL; OPTICAL CONTROL;
DIAMOND SPINS; GROUND-STATE; ELECTRON-GAS
AB The past decade has seen remarkable progress in the development of the nitrogen-vacancy (NV) defect center in diamond, which is one of the leading candidates for quantum information technologies. The success of the NV center as a solid-state qubit has stimulated an active search for similar defect spins in other technologically important and mature semiconductors, such as silicon carbide. If successfully combined with the advanced microfabrication techniques available to such materials, coherent quantum control of defect spins could potentially lead to semiconductor-based, wafer-scale quantum technologies that make use of exotic quantum mechanical phenomena like entanglement. In this article, we describe the robust spin property of the NV center and the current status of NV center research for quantum information technologies. We then outline first-principles computational modeling techniques based on density functional theory to efficiently search for potential spin defects in nondiamond hosts suitable for quantum information applications. The combination of computational modeling and experimentation has proven invaluable in this area, and we describe the successful interplay between theory and experiment achieved with the divacancy spin qubit in silicon carbide.
C1 [Koehl, William F.; Seo, Hosung; Galli, Giulia; Awschalom, David D.] Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA.
[Koehl, William F.; Galli, Giulia; Awschalom, David D.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Koehl, WF (reprint author), Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA.
EM koehl@uchicago.edu; hseo@uchicago.edu; gagalli@uchicago.edu;
awsch@uchicago.edu
NR 117
TC 3
Z9 3
U1 7
U2 21
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0883-7694
EI 1938-1425
J9 MRS BULL
JI MRS Bull.
PD DEC
PY 2015
VL 40
IS 12
BP 1146
EP 1153
DI 10.1557/mrs.2015.266
PG 8
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA CX5LY
UT WOS:000365744400015
ER
PT J
AU Babu, SS
Love, L
Dehoff, R
Peter, W
Watkins, TR
Pannala, S
AF Babu, S. S.
Love, L.
Dehoff, R.
Peter, W.
Watkins, T. R.
Pannala, S.
TI Additive manufacturing of materials: Opportunities and challenges
SO MRS BULLETIN
LA English
DT Article
DE metal; crystallographic structure; neutron scattering; simulation;
joining
ID INCONEL 718; SOLIDIFICATION PARAMETERS; NEUTRON-TRANSMISSION;
SINGLE-CRYSTALS; LASER; MICROSTRUCTURE; DEPOSITION; TI-6AL-4V; WIRE;
HETEROGENEITY
AB Additive manufacturing (also known as 3D printing) is considered a disruptive technology for producing components with topologically optimized complex geometries as well as functionalities that are not achievable by traditional methods. The realization of the full potential of 3D printing is stifled by a lack of computational design tools, generic material feedstocks, techniques for monitoring thermomechanical processes under in situ conditions, and especially methods for minimizing anisotropic static and dynamic properties brought about by microstructural heterogeneity. This article discusses the role of interdisciplinary research involving robotics and automation, process control, multiscale characterization of microstructure and properties, and high-performance computational tools to address each of these challenges. Emerging pathways to scale up additive manufacturing of structural materials to large sizes (>1 m) and higher productivities (5-20 kg/h) while maintaining mechanical performance and geometrical flexibility are also discussed.
C1 [Babu, S. S.; Love, L.; Dehoff, R.; Peter, W.] Oak Ridge Natl Lab, Mfg Demonstrat Facil, Oak Ridge, TN 37831 USA.
[Babu, S. S.] Univ Tennessee, Dept Mech Aerosp & Biomed Engn, Knoxville, TN 37996 USA.
[Love, L.] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN USA.
[Dehoff, R.; Peter, W.; Watkins, T. R.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA.
RP Babu, SS (reprint author), Oak Ridge Natl Lab, Mfg Demonstrat Facil, Oak Ridge, TN 37831 USA.
EM sbabu@utk.edu; lovelj@ornl.gov; dehoffrr@ornl.gov; peterwh@ornl.gov;
watkinstr@ornl.gov; spannala@sabic.com
RI Watkins, Thomas/D-8750-2016; Dehoff, Ryan/I-6735-2016
OI Watkins, Thomas/0000-0002-2646-1329; Dehoff, Ryan/0000-0001-9456-9633
FU US Department of Energy (DOE), Office of Energy Efficiency and Renewable
Energy, Advanced Manufacturing Office [DE-AC05-000R22725]; UT-Battelle,
LLC; Laboratory Directed Research and Development Program of Oak Ridge
National Laboratory (ORNL); Scientific User Facilities Division, Office
of Basic Energy Sciences (BES); US DOE; Division of Chemical Sciences,
Geosciences, and Biosciences, Office of BES, US DOE [DE-AC05-000R22725];
ORNL
FX Research discussed in this article was sponsored by the US Department of
Energy (DOE), Office of Energy Efficiency and Renewable Energy, Advanced
Manufacturing Office, under Contract DE-AC05-000R22725 with UT-Battelle,
LLC, and by the Laboratory Directed Research and Development Program of
Oak Ridge National Laboratory (ORNL), managed by UT-Battelle, LLC.
Research at ORNL's High Flux Isotope Reactor was sponsored by the
Scientific User Facilities Division, Office of Basic Energy Sciences
(BES), and US DOE. Some of the neutron diffraction characterization was
supported by the Division of Chemical Sciences, Geosciences, and
Biosciences, Office of BES, US DOE, under Contract DE-AC05-000R22725
with ORNL, managed and operated by UT-Battelle, LLC. The authors thank
Drs. Ralph Dinwiddie and Lindsay Kolbus for technical contributions to
this work.
NR 72
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U1 24
U2 125
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0883-7694
EI 1938-1425
J9 MRS BULL
JI MRS Bull.
PD DEC
PY 2015
VL 40
IS 12
BP 1154
EP 1161
DI 10.1557/mrs.2015.234
PG 8
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA CX5LY
UT WOS:000365744400016
ER
PT J
AU Zhao, C
Rajashankar, KR
Marcia, M
Pyle, AM
AF Zhao, Chen
Rajashankar, Kanagalaghatta R.
Marcia, Marco
Pyle, Anna Marie
TI Crystal structure of group II intron domain 1 reveals a template for RNA
assembly
SO NATURE CHEMICAL BIOLOGY
LA English
DT Article
ID SECONDARY STRUCTURE; TERTIARY STRUCTURE; RIBOZYME DOMAIN; INTERMEDIATE;
CONFORMATION; ADAPTATION; SUBDOMAINS; PRINCIPLES; STABILITY; MECHANISM
AB Although the importance of large noncoding RNAs is increasingly appreciated, our understanding of their structures and architectural dynamics remains limited. In particular, we know little about RNA folding intermediates and how they facilitate the productive assembly of RNA tertiary structures. Here, we report the crystal structure of an obligate intermediate that is required during the earliest stages of group II intron folding. Composed of domain 1 from the Oceanobacillus iheyensis group II intron (266 nucleotides), this intermediate retains native-like features but adopts a compact conformation in which the active site cleft is closed. Transition between this closed and the open (native) conformation is achieved through discrete rotations of hinge motifs in two regions of the molecule. The open state is then stabilized by sequential docking of downstream intron domains, suggesting a 'first come, first folded' strategy that may represent a generalizable pathway for assembly of large RNA and ribonucleoprotein structures.
C1 [Zhao, Chen] Yale Univ, Dept Mol Biophys & Biochem, New Haven, CT 06520 USA.
[Rajashankar, Kanagalaghatta R.] Argonne Natl Lab, Northeastern Collaborat Access Team NECAT, Argonne, IL 60439 USA.
[Rajashankar, Kanagalaghatta R.] Cornell Univ, Dept Chem & Chem Biol, Ithaca, NY USA.
[Marcia, Marco; Pyle, Anna Marie] Yale Univ, Dept Mol Cellular & Dev Biol, New Haven, CT USA.
[Pyle, Anna Marie] Yale Univ, Dept Chem, New Haven, CT USA.
[Pyle, Anna Marie] Howard Hughes Med Inst, Chevy Chase, MD USA.
RP Zhao, C (reprint author), Yale Univ, Dept Mol Biophys & Biochem, New Haven, CT 06520 USA.
EM mmarcia@embl.fr; anna.pyle@yale.edu
FU Gruber Science Fellowship; US National Institute of Health (NIH)
[RO1GM50313]; National Institute of General Medical Sciences from the
NIH [P41 GM103403]; NIH-ORIP HEI grant [S10 RR029205]; DOE Office of
Science by Argonne National Laboratory [DE-AC02-06CH11357]
FX We would like to thank S. Somarowthu for constructive discussions and O.
Fedorova, S. Somarowthu and T. Dickey for reading the manuscript. C.Z.
is supported by Gruber Science Fellowship. A.M.P. is a Howard Hughes
Medical Institute Investigator. This work is supported by the US
National Institute of Health (NIH) (RO1GM50313) and is based upon
research conducted at the Northeastern Collaborative Access Team
beamlines, which are funded by the National Institute of General Medical
Sciences from the NIH (P41 GM103403). The Pilatus 6M detector on 24-ID-C
beam line is funded by a NIH-ORIP HEI grant (S10 RR029205). This
research used resources of the Advanced Photon Source, a US Department
of Energy (DOE) Office of Science User Facility operated for the DOE
Office of Science by Argonne National Laboratory under contract no.
DE-AC02-06CH11357.
NR 50
TC 2
Z9 2
U1 1
U2 4
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1552-4450
EI 1552-4469
J9 NAT CHEM BIOL
JI Nat. Chem. Biol.
PD DEC
PY 2015
VL 11
IS 12
BP 967
EP 972
DI 10.1038/NCHEMBIO.1949
PG 6
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA CX6TG
UT WOS:000365834000016
PM 26502156
ER
PT J
AU Paulsen, JD
Demery, V
Santangelo, CD
Russell, TP
Davidovitch, B
Menon, N
AF Paulsen, Joseph D.
Demery, Vincent
Santangelo, Christian D.
Russell, Thomas P.
Davidovitch, Benny
Menon, Narayanan
TI Optimal wrapping of liquid droplets with ultrathin sheets
SO NATURE MATERIALS
LA English
DT Article
ID THIN; PARTICLES; BUBBLES; STRESS
AB Elastic sheets offer a path to encapsulating a droplet of one fluid in another that is different from that of traditional molecular or particulate surfactants(1). In wrappings of fluids by sheets of moderate thickness with petals designed to curl into closed shapes(2,3), capillarity balances bending forces. Here, we show that, by using much thinner sheets, the constraints of this balance can be lifted to access a regime of high sheet bendability that brings three major advantages: ultrathin sheets automatically achieve optimally efficient shapes that maximize the enclosed volume of liquid for a fixed area of sheet; interfacial energies and mechanical properties of the sheet are irrelevant within this regime, thus allowing for further functionality; and complete coverage of the fluid can be achieved without special sheet designs. We propose and validate a general geometric model that captures the entire range of this new class of wrapped and partially wrapped shapes.
C1 [Paulsen, Joseph D.; Demery, Vincent; Santangelo, Christian D.; Davidovitch, Benny; Menon, Narayanan] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA.
[Paulsen, Joseph D.; Russell, Thomas P.] Univ Massachusetts, Polymer Sci & Engn Dept, Amherst, MA 01003 USA.
[Russell, Thomas P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Russell, Thomas P.] Tohoku Univ, WPI AIMR, Aoba Ku, Sendai, Miyagi 9808577, Japan.
RP Paulsen, JD (reprint author), Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA.
EM paulsenj@umass.edu; vdemery@umass.edu
OI Paulsen, Joseph/0000-0001-6048-456X
FU W. M. Keck Foundation
FX We thank M. Juszkiewicz for early contributions to this work and O. Agam
for helpful discussions. Funding from the W. M. Keck Foundation is
gratefully acknowledged.
NR 28
TC 6
Z9 6
U1 12
U2 51
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
EI 1476-4660
J9 NAT MATER
JI Nat. Mater.
PD DEC
PY 2015
VL 14
IS 12
BP 1206
EP 1209
PG 4
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA CX6VE
UT WOS:000365839000016
PM 26322716
ER
PT J
AU Bjornson, K
Pershoguba, SS
Balatsky, AV
Black-Schaffer, AM
AF Bjornson, Kristofer
Pershoguba, Sergey S.
Balatsky, Alexander V.
Black-Schaffer, Annica M.
TI Spin-polarized edge currents and Majorana fermions in one- and
two-dimensional topological superconductors
SO PHYSICAL REVIEW B
LA English
DT Article
ID HGTE QUANTUM-WELLS; SINGLE DIRAC CONE; INSULATOR; NANOWIRE; SIGNATURE;
SURFACE; BI2TE3; PHASE
AB We investigate the persistent currents, spin-polarized local density of states, and spectral functions of topological superconductors constructed by placing ferromagnetic impurities on top of an s-wave superconductor with Rashba spin-orbit interaction. We solve self-consistently for the superconducting order parameter and investigate both two-dimensional blocks and one-dimensional wires of ferromagnetic impurities, with the magnetic moments pointing both perpendicular and parallel to the surface. We find that the topologically protected edge states of ferromagnetic blocks give rise to spin-polarized edge currents, but that the total persistent current flows in opposite direction to what is expected from the dispersion relation of the edge states. We also show that the Majorana fermions at the end points of one-dimensional wires are spin polarized, which can be directly related to the spin polarization of the edge currents of two-dimensional blocks. Connections are also made to the physics of the Yu-Shiba-Rusinov states for zero-dimensional impurities.
C1 [Bjornson, Kristofer; Black-Schaffer, Annica M.] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden.
[Pershoguba, Sergey S.; Balatsky, Alexander V.] KTH Royal Inst Technol, Ctr Quantum Mat, Nordita, S-10691 Stockholm, Sweden.
[Pershoguba, Sergey S.; Balatsky, Alexander V.] Stockholm Univ, S-10691 Stockholm, Sweden.
[Balatsky, Alexander V.] Los Alamos Natl Lab, Inst Mat Sci, Los Alamos, NM 87545 USA.
RP Bjornson, K (reprint author), Uppsala Univ, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden.
OI Pershoguba, Sergey/0000-0001-5003-3415
FU Swedish Research Council (Vetenskapsradet); Goran Gustafsson Foundation;
Swedish Foundation for Strategic Research (SSF); European Research
Council (ERC) [DM-321031]; US DOE BES [E304]
FX We thank G. Volovik, M. Eschrig, Y. Kedem, C. Triola, and T. Ojanen for
useful discussions. This work was supported by the Swedish Research
Council (Vetenskapsradet), the Goran Gustafsson Foundation, and the
Swedish Foundation for Strategic Research (SSF) (K.B. and A.B.-S.), and
the European Research Council (ERC) DM-321031 and the US DOE BES E304
(S.S.P. and A.V.B.).
NR 35
TC 7
Z9 7
U1 3
U2 21
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD DEC 1
PY 2015
VL 92
IS 21
AR 214501
DI 10.1103/PhysRevB.92.214501
PG 17
WC Physics, Condensed Matter
SC Physics
GA CX5WR
UT WOS:000365773700002
ER
PT J
AU Lee, CC
Xu, SY
Huang, SM
Sanchez, DS
Belopolski, I
Chang, GQ
Bian, G
Alidoust, N
Zheng, H
Neupane, M
Wang, BK
Bansil, A
Hasan, MZ
Lin, H
AF Lee, Chi-Cheng
Xu, Su-Yang
Huang, Shin-Ming
Sanchez, Daniel S.
Belopolski, Ilya
Chang, Guoqing
Bian, Guang
Alidoust, Nasser
Zheng, Hao
Neupane, Madhab
Wang, Baokai
Bansil, Arun
Hasan, M. Zahid
Lin, Hsin
TI Fermi surface interconnectivity and topology in Weyl fermion semimetals
TaAs, TaP, NbAs, and NbP
SO PHYSICAL REVIEW B
LA English
DT Article
ID ARCS; PHASE; INSULATORS; TRANSITION; DISCOVERY; TRANSPORT; GRAPHENE;
HALL
AB The family of binary compounds including TaAs, TaP, NbAs, and NbP was recently discovered as the first realization of Weyl semimetals. In order to develop a comprehensive description of the charge carriers in these Weyl semimetals, we performed detailed and systematic electronic band structure calculations which reveal the nature of Fermi surfaces and their complex interconnectivity in TaAs, TaP, NbAs, and NbP. Our work reports a comparative and comprehensive study of Fermi surface topology and band structure details of all known members of the Weyl semimetal family and hence provides the fundamental knowledge for realizing the many predicted exotic topological quantum physics of Weyl semimetals based on the TaAs class of materials.
C1 [Lee, Chi-Cheng; Huang, Shin-Ming; Chang, Guoqing; Wang, Baokai; Lin, Hsin] Natl Univ Singapore, Ctr Adv Mat 2D, Singapore 117546, Singapore.
[Lee, Chi-Cheng; Huang, Shin-Ming; Chang, Guoqing; Wang, Baokai; Lin, Hsin] Natl Univ Singapore, Graphene Res Ctr, Singapore 117546, Singapore.
[Lee, Chi-Cheng; Huang, Shin-Ming; Chang, Guoqing; Wang, Baokai; Lin, Hsin] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore.
[Xu, Su-Yang; Sanchez, Daniel S.; Belopolski, Ilya; Bian, Guang; Alidoust, Nasser; Zheng, Hao; Neupane, Madhab; Hasan, M. Zahid] Princeton Univ, Dept Phys, Lab Topol Quantum Matter & Spect B7, Princeton, NJ 08544 USA.
[Neupane, Madhab] Los Alamos Natl Lab, Condensed Matter & Magnet Sci Grp, Los Alamos, NM 87545 USA.
[Wang, Baokai; Bansil, Arun] Northeastern Univ, Dept Phys, Boston, MA 02115 USA.
[Hasan, M. Zahid] Princeton Univ, Princeton Inst Sci & Technol Mat, Princeton Ctr Complex Mat, Princeton, NJ 08544 USA.
RP Hasan, MZ (reprint author), Princeton Univ, Dept Phys, Lab Topol Quantum Matter & Spect B7, Princeton, NJ 08544 USA.
EM mzhasan@princeton.edu; nilnish@gmail.com
RI zheng, hao/H-8636-2015; Bian, Guang/C-5182-2016; Lin, Hsin/F-9568-2012;
OI zheng, hao/0000-0002-6495-874X; Bian, Guang/0000-0001-7055-2319; Lin,
Hsin/0000-0002-4688-2315; Huang, Shin-Ming/0000-0003-4273-9682; chang,
guoqing/0000-0003-1180-3127
FU National Research Foundation, Prime Minister's Office, Singapore under
NRF [NRF-NRFF2013-03]; US Department of Energy (DOE), Office of Science,
Basic Energy Sciences [DE-FG-02-05ER46200]; US DOE, Office of Science,
Basic Energy Sciences [DE-FG-02-07ER46352]; DOE [DE-AC02-05CH11231];
Gordon and Betty Moore Foundations EPiQS Initiative [GBMF4547]
FX Work at National University of Singapore is supported by the National
Research Foundation, Prime Minister's Office, Singapore under its NRF
fellowship (NRF Award No. NRF-NRFF2013-03). Research work at Princeton
University is funded by US Department of Energy (DOE), Office of
Science, Basic Energy Sciences Grant No. DE-FG-02-05ER46200. The work at
Northeastern University was supported by the US DOE, Office of Science,
Basic Energy Sciences Grant No. DE-FG-02-07ER46352, and benefited from
Northeastern University's Advanced Scientific Computation Center (ASCC)
and the NERSC supercomputing center through DOE Grant No.
DE-AC02-05CH11231. S.M.H., G.C., and H.L.'s visits to Princeton
University are funded by the Gordon and Betty Moore Foundations EPiQS
Initiative through Grant GBMF4547 (Hasan).
NR 60
TC 8
Z9 8
U1 10
U2 72
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD DEC 1
PY 2015
VL 92
IS 23
AR 235104
DI 10.1103/PhysRevB.92.235104
PG 10
WC Physics, Condensed Matter
SC Physics
GA CX5WU
UT WOS:000365774000004
ER
PT J
AU Zhang, ZC
Wei, W
Yang, FY
Zhu, ZW
Guo, MH
Feng, Y
Yu, DJ
Yao, MY
Harrison, N
McDonald, R
Zhang, YB
Guan, DD
Qian, D
Jia, JF
Wang, YY
AF Zhang, Zuocheng
Wei, Wei
Yang, Fangyuan
Zhu, Zengwei
Guo, Minghua
Feng, Yang
Yu, Dejing
Yao, Mengyu
Harrison, Neil
McDonald, Ross
Zhang, Yuanbo
Guan, Dandan
Qian, Dong
Jia, Jinfeng
Wang, Yayu
TI Zeeman effect of the topological surface states revealed by quantum
oscillations up to 91 Tesla
SO PHYSICAL REVIEW B
LA English
DT Article
ID HALL FERROMAGNETISM; INSULATOR; GRAPHENE; SPIN
AB We report quantum oscillation studies on the Bi2Te3-xSx topological insulator single crystals in pulsed magnetic fields up to 91 T. For the x = 0.4 sample with the lowest bulk carrier density, the surface and bulk quantum oscillations can be disentangled by combined Shubnikov-de Haas and de Hass-van Alphen oscillations, as well as quantum oscillations in nanometer-thick peeled crystals. At high magnetic fields beyond the bulk quantum limit, our results suggest that the zeroth Landau level of topological surface states is shifted due to the Zeeman effect. The g factor of the topological surface states is estimated to be between 1.8 and 4.5. These observations shed new light on the quantum transport phenomena of topological insulators in ultrahigh magnetic fields.
C1 [Zhang, Zuocheng; Guo, Minghua; Feng, Yang; Wang, Yayu] Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China.
[Zhang, Zuocheng; Zhu, Zengwei; Harrison, Neil; McDonald, Ross] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
[Wei, Wei; Yu, Dejing; Yao, Mengyu; Guan, Dandan; Qian, Dong; Jia, Jinfeng] Shanghai Jiao Tong Univ, Dept Phys & Astron, Minist Educ, Key Lab Artificial Struct & Quantum Control, Shanghai 200240, Peoples R China.
[Yang, Fangyuan; Zhang, Yuanbo] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China.
[Yang, Fangyuan; Zhang, Yuanbo] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China.
[Zhang, Yuanbo; Guan, Dandan; Qian, Dong; Jia, Jinfeng] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China.
[Wang, Yayu] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China.
RP Zhang, ZC (reprint author), Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China.
EM jfjia@sjtu.edu.cn; yayuwang@tsinghua.edu.cn
RI Qian, Dong/O-1028-2015; Guan, Dandan/O-7305-2015;
OI Guan, Dandan/0000-0002-3714-8813; Harrison, Neil/0000-0001-5456-7756
FU NSFC; MOST of China [2015CB921000, 2013CB921900]; Office of Science,
Office of Basic Energy Sciences, of the U.S. Department of Energy
[DE-AC02-05CH11231]; Top-notch Young Talents Program; Shanghai Pujiang
Program [14PJ1404600]; University of California UCOP grant "Quantum
Phenomena in Topological Insulators"; U.S. Department of Energy BES
grant "Science of 100 tesla"
FX This work is supported by NSFC and MOST of China (Grants No.
2015CB921000 and No. 2013CB921900). The Advanced Light Source is
supported by the Director, Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231. D.Q. acknowledges additional support from the
Top-notch Young Talents Program. D.G. acknowledges support from Shanghai
Pujiang Program (Grant No. 14PJ1404600). The high-field measurements
were supported by the University of California UCOP grant "Quantum
Phenomena in Topological Insulators" and the U.S. Department of Energy
BES grant "Science of 100 tesla."
NR 47
TC 1
Z9 1
U1 11
U2 31
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD DEC 1
PY 2015
VL 92
IS 23
AR 235402
DI 10.1103/PhysRevB.92.235402
PG 8
WC Physics, Condensed Matter
SC Physics
GA CX5WU
UT WOS:000365774000007
ER
PT J
AU Bang, W
Albright, BJ
Bradley, PA
Vold, EL
Boettger, JC
Fernandez, JC
AF Bang, W.
Albright, B. J.
Bradley, P. A.
Vold, E. L.
Boettger, J. C.
Fernandez, J. C.
TI Uniform heating of materials into the warm dense matter regime with
laser-driven quasimonoenergetic ion beams
SO PHYSICAL REVIEW E
LA English
DT Article
ID ENERGY PROTON-BEAMS; PLASMA; ACCELERATION; DIAMOND; CARBON; STATE;
FILMS; GOLD
AB In a recent experiment at the Trident laser facility, a laser-driven beam of quasimonoenergetic aluminum ions was used to heat solid gold and diamond foils isochorically to 5.5 and 1.7 eV, respectively. Here theoretical calculations are presented that suggest the gold and diamond were heated uniformly by these laser-driven ion beams. According to calculations and SESAME equation-of-state tables, laser-driven aluminum ion beams achievable at Trident, with a finite energy spread of Delta E/E similar to 20%, are expected to heat the targets more uniformly than a beam of 140-MeV aluminum ions with zero energy spread. The robustness of the expected heating uniformity relative to the changes in the incident ion energy spectra is evaluated, and expected plasma temperatures of various target materials achievable with the current experimental platform are presented.
C1 [Bang, W.; Albright, B. J.; Bradley, P. A.; Vold, E. L.; Boettger, J. C.; Fernandez, J. C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Bang, W (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM wbang@lanl.gov
RI Bang, Woosuk/E-8135-2015; Fernandez, Juan/H-3268-2011;
OI Bang, Woosuk/0000-0002-4259-1342; Fernandez, Juan/0000-0002-1438-1815;
Albright, Brian/0000-0002-7789-6525; Bradley, Paul/0000-0001-6229-6677
FU U.S. DOE [DE-AC52-06NA25396]; LANL LDRD program
FX The authors would like to thank S. Crockett and K. G. Honnell for their
advice regarding the use of SESAME tables; B. M. Hegelich and G. Dyer at
the University of Texas at Austin; and L. Yin, S. Palaniyappan, and D.
C. Gautier from LANL for valuable discussions. The authors also thank P.
E. Grabowski for useful discussions about the stopping powers of warm
dense gold and diamond. This work was performed at LANL, operated by Los
Alamos National Security, LLC, for the U.S. DOE under Contract No.
DE-AC52-06NA25396, and was supported in part by the LANL LDRD program.
NR 61
TC 6
Z9 6
U1 0
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
EI 1550-2376
J9 PHYS REV E
JI Phys. Rev. E
PD DEC 1
PY 2015
VL 92
IS 6
AR 063101
DI 10.1103/PhysRevE.92.063101
PG 10
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA CX7HF
UT WOS:000365872100011
PM 26764832
ER
PT J
AU Fartoukh, S
Valishev, A
Papaphilippou, Y
Shatilov, D
AF Fartoukh, Stephane
Valishev, Alexander
Papaphilippou, Yannis
Shatilov, Dmitry
TI Compensation of the long-range beam-beam interactions as a path towards
new configurations for the high luminosity LHC
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB Colliding bunch trains in a circular collider demands a certain crossing angle in order to separate the two beams transversely after the collision. The magnitude of this crossing angle is a complicated function of the bunch charge, the number of long-range beam-beam interactions, of beta* and type of optics (flat or round), and possible compensation or additive effects between several low-beta insertions in the ring depending on the orientation of the crossing plane at each interaction point. About 15 years ago, the use of current bearing wires was proposed at CERN in order to mitigate the long-range beam-beam effects [J. P. Koutchouk, CERN Report No. LHC-Project-Note 223, 2000], therefore offering the possibility to minimize the crossing angle with all the beneficial effects this might have: on the luminosity performance by reducing the need for crab-cavities or lowering their voltage, on the required aperture of the final focus magnets, on the strength of the orbit corrector involved in the crossing bumps, and finally on the heat load and radiation dose deposited in the final focus quadrupoles. In this paper, a semianalytical approach is developed for the compensation of the long-range beam-beam interactions with current wires. This reveals the possibility of achieving optimal correction through a careful adjustment of the aspect ratio of the beta functions at the wire position. We consider the baseline luminosity upgrade plan of the Large Hadron Collider (HL-LHC project), and compare it to alternative scenarios, or so-called "configurations," where modifications are applied to optics, crossing angle, or orientation of the crossing plane in the two low-beta insertions of the ring. For all these configurations, the beneficial impact of beam-beam compensation devices is then demonstrated on the tune footprint, the dynamical aperture, and/or the frequency map analysis of the nonlinear beam dynamics as the main figures of merit.
C1 [Fartoukh, Stephane; Papaphilippou, Yannis] CERN, CH-1211 Geneva 23, Switzerland.
[Valishev, Alexander] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Shatilov, Dmitry] SB RAS, Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
RP Fartoukh, S (reprint author), CERN, CH-1211 Geneva 23, Switzerland.
EM stephane.fartoukh@cern.ch; valishev@fnal.gov
FU DOE; EU [284404]
FX This research was supported by DOE via the US-LARP program and by EU FP7
HiLumi LHC [34]-Grant Agreement No. 284404.
NR 31
TC 1
Z9 1
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD DEC 1
PY 2015
VL 18
IS 12
AR 121001
DI 10.1103/PhysRevSTAB.18.121001
PG 21
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA CX7MO
UT WOS:000365886200001
ER
PT J
AU Wohlfahrt, G
Gu, LH
AF Wohlfahrt, Georg
Gu, Lianhong
TI The many meanings of gross photosynthesis and their implication for
photosynthesis research from leaf to globe
SO PLANT CELL AND ENVIRONMENT
LA English
DT Editorial Material
ID NET ECOSYSTEM EXCHANGE; CARBONYL SULFIDE; ISOTOPE DISCRIMINATION;
MESOPHYLL CONDUCTANCE; CO2 ASSIMILATION; MOUNTAIN MEADOW; GREEN LEAVES;
RESPIRATION; FLUXES; LIGHT
C1 [Wohlfahrt, Georg] Univ Innsbruck, Inst Ecol, A-6020 Innsbruck, Austria.
[Wohlfahrt, Georg] European Acad Bolzano, I-39100 Bolzano, Italy.
[Gu, Lianhong] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Gu, Lianhong] Oak Ridge Natl Lab, Climate Change Sci Inst, Oak Ridge, TN 37831 USA.
RP Wohlfahrt, G (reprint author), Univ Innsbruck, Inst Ecol, A-6020 Innsbruck, Austria.
EM georg.wohlfahrt@uibk.ac.at
RI Wohlfahrt, Georg/D-2409-2009; Gu, Lianhong/H-8241-2014
OI Wohlfahrt, Georg/0000-0003-3080-6702; Gu, Lianhong/0000-0001-5756-8738
FU Austrian Science Fund FWF [P 26425, P 27176]
NR 57
TC 5
Z9 5
U1 6
U2 28
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0140-7791
EI 1365-3040
J9 PLANT CELL ENVIRON
JI Plant Cell Environ.
PD DEC
PY 2015
VL 38
IS 12
BP 2500
EP 2507
DI 10.1111/pce.12569
PG 8
WC Plant Sciences
SC Plant Sciences
GA CX6EV
UT WOS:000365794900002
PM 25988305
ER
PT J
AU Armstrong, DA
Huie, RE
Koppenol, WH
Lymar, SV
Merenyi, G
Neta, P
Ruscic, B
Stanbury, DM
Steenken, S
Wardman, P
AF Armstrong, David A.
Huie, Robert E.
Koppenol, Willem H.
Lymar, Sergei V.
Merenyi, Gabor
Neta, Pedatsur
Ruscic, Branko
Stanbury, David M.
Steenken, Steen
Wardman, Peter
TI Standard electrode potentials involving radicals in aqueous solution:
inorganic radicals (IUPAC Technical Report)
SO PURE AND APPLIED CHEMISTRY
LA English
DT Article; Proceedings Paper
CT 2014 International Congress of Photobiology
CY SEP 08-12, 2014
CL Cordoba, ARGENTINA
SP International Union of Photobiology (IUPB), IUPAC
DE aqueous solutions; chemical equilibrium; chemical thermodynamics;
inorganic chemistry; IUPAC Physical and Biophysical Chemistry Division;
oxidation; radicals; standard electrode potentials
ID ACTIVE THERMOCHEMICAL TABLES
AB Recommendations are made for standard potentials involving select inorganic radicals in aqueous solution at 25 degrees C. These recommendations are based on a critical and thorough literature review and also by performing derivations from various literature reports. The recommended data are summarized in tables of standard potentials, Gibbs energies of formation, radical pK(a)'s, and hemicolligation equilibrium constants. In all cases, current best estimates of the uncertainties are provided. An extensive set of Data Sheets is appended that provide original literature references, summarize the experimental results, and describe the decisions and procedures leading to each of the recommendations.
C1 [Stanbury, David M.] Auburn Univ, Dept Chem & Biochem, Auburn, AL 36849 USA.
[Armstrong, David A.] Univ Calgary, Dept Chem, Calgary, AB T2N 1N4, Canada.
[Huie, Robert E.; Neta, Pedatsur] NIST, Phys & Chem Properties Div, Gaithersburg, MD 20899 USA.
[Koppenol, Willem H.] Swiss Fed Inst Technol, Inst Inorgan Chem, CH-8093 Zurich, Switzerland.
[Lymar, Sergei V.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Merenyi, Gabor] Royal Inst Technol, Dept Appl Phys Chem, S-10044 Stockholm 70, Sweden.
[Ruscic, Branko] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL USA.
[Ruscic, Branko] Univ Chicago, Computat Inst, Chicago, IL 60637 USA.
[Steenken, Steen] Max Planck Inst Strahlenchem, D-45413 Mulheim, Germany.
[Wardman, Peter] Univ Oxford, Dept Oncol, Gray Canc Inst, Oxford OX3 7DQ, England.
RP Stanbury, DM (reprint author), Auburn Univ, Dept Chem & Biochem, Auburn, AL 36849 USA.
EM stanbdm@auburn.edu
RI Ruscic, Branko/A-8716-2008
OI Ruscic, Branko/0000-0002-4372-6990
FU IUPAC; ETH ETH Stiftung; US Department of Energy, Office of Science,
Office of Basic Energy Sciences, Division of Chemical Sciences,
Geosciences and Biosciences [DE-AC02-06CH11357, DE-AC02-98CH10886]
FX We thank IUPAC, ETH & ETH Stiftung for financial support of this
project. The work at Argonne National Laboratory was supported by the US
Department of Energy, Office of Science, Office of Basic Energy
Sciences, Division of Chemical Sciences, Geosciences and Biosciences
under Contract No. DE-AC02-06CH11357. This material is partially based
upon work at Brookhaven National Laboratory supported by the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, Division of Chemical Sciences, Geosciences, and Biosciences
under contract DE-AC02-98CH10886.
NR 13
TC 11
Z9 11
U1 12
U2 29
PU WALTER DE GRUYTER GMBH
PI BERLIN
PA GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY
SN 0033-4545
EI 1365-3075
J9 PURE APPL CHEM
JI Pure Appl. Chem.
PD DEC
PY 2015
VL 87
IS 11-12
BP 1139
EP 1150
DI 10.1515/pac-2014-0502
PG 12
WC Chemistry, Multidisciplinary
SC Chemistry
GA CX9WS
UT WOS:000366057300006
ER
PT J
AU Andersson, L
Ergun, RE
Delory, GT
Eriksson, A
Westfall, J
Reed, H
McCauly, J
Summers, D
Meyers, D
AF Andersson, L.
Ergun, R. E.
Delory, G. T.
Eriksson, A.
Westfall, J.
Reed, H.
McCauly, J.
Summers, D.
Meyers, D.
TI The Langmuir Probe and Waves (LPW) Instrument for MAVEN
SO SPACE SCIENCE REVIEWS
LA English
DT Review
DE Mars; Langmuir Probe; Waves instrument; Ionosphere; Electron temperature
ID ELECTRIC-FIELD INSTRUMENT; RADAR SOUNDINGS; FAST SATELLITE;
MARS-EXPRESS; SOLAR-WIND; IONOSPHERE; PLASMA; THEMIS
AB We describe the sensors, the sensor biasing and control, the signal-processing unit, and the operation of the Langmuir Probe and Waves (LPW) instrument on the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission. The LPW instrument is designed to measure the electron density and temperature in the ionosphere of Mars and to measure spectral power density of waves (DC-2 MHz) in Mars' ionosphere, including one component of the electric field. Low-frequency plasma waves can heat ions resulting in atmospheric loss. Higher-frequency waves are used to calibrate the density measurement and to study strong plasma processes. The LPW is part of the Particle and Fields (PF) suite on the MAVEN spacecraft. The LPW instrument utilizes two, 40 cm long by 0.635 cm diameter cylindrical sensors with preamplifiers, which can be configured to measure either plasma currents or plasma waves. The sensors are mounted on a pair of meter long stacer booms. The sensors and nearby surfaces are controlled by a Boom Electronics Board (BEB). The Digital Fields Board (DFB) conditions the analog signals, converts the analog signals to digital, processes the digital signals including spectral analysis, and packetizes the data for transmission. The BEB and DFB are located inside of the Particle and Fields Digital Processing Unit (PFDPU).
C1 [Andersson, L.; Ergun, R. E.; Westfall, J.; Reed, H.; Summers, D.; Meyers, D.] Univ Colorado, LASP, Boulder, CO 80309 USA.
[Ergun, R. E.] Univ Colorado, APS, Boulder, CO 80309 USA.
[Delory, G. T.; McCauly, J.] Univ Calif Berkeley, SSL, Berkeley, CA 94720 USA.
[Eriksson, A.] Swedish Inst Space Phys, Uppsala, Sweden.
RP Andersson, L (reprint author), Univ Colorado, LASP, Boulder, CO 80309 USA.
EM laila.andersson@lasp.colorado.edu
FU NASA MAVEN [NNH10CC04C]
FX The authors are grateful to the large number of people who have
contributed to the success of this project. In particular we want to
acknowledge all the engineers working on the LPW instrument for their
creativity and professionalism. The work was made under NASA MAVEN
contract (NNH10CC04C).
NR 33
TC 18
Z9 18
U1 5
U2 13
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-6308
EI 1572-9672
J9 SPACE SCI REV
JI Space Sci. Rev.
PD DEC
PY 2015
VL 195
IS 1-4
BP 173
EP 198
DI 10.1007/s11214-015-0194-3
PG 26
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA CX5GI
UT WOS:000365729700007
ER
PT J
AU Scoville, DK
White, CC
Botta, D
McConnachie, LA
Zadworny, ME
Schmuck, SC
Hu, XG
Gao, XH
Yu, JB
Dills, RL
Sheppard, L
Delaney, MA
Griffith, WC
Beyer, RP
Zangar, RC
Pounds, JG
Faustman, EM
Kavanagh, TJ
AF Scoville, David K.
White, Collin C.
Botta, Dianne
McConnachie, Lisa A.
Zadworny, Megan E.
Schmuck, Stefanie C.
Hu, Xiaoge
Gao, Xiaohu
Yu, Jianbo
Dills, Russell L.
Sheppard, Lianne
Delaney, Martha A.
Griffith, William C.
Beyer, Richard P.
Zangar, Richard C.
Pounds, Joel G.
Faustman, Elaine M.
Kavanagh, Terrance J.
TI Susceptibility to quantum dot induced lung inflammation differs widely
among the Collaborative Cross founder mouse strains
SO TOXICOLOGY AND APPLIED PHARMACOLOGY
LA English
DT Article
DE Quantum dots; Lung inflammation; Collaborative Cross mouse strains;
Heritability; Genetics
ID WALLED CARBON NANOTUBES; KAPPA-B; TOXICITY ASSESSMENT; DENDRITIC CELLS;
MURINE LUNG; IN-VITRO; MICE; NANOPARTICLES; GENE; CYTOTOXICITY
AB Quantum dots (QDs) are engineered semiconductor nanoparticles with unique physicochemical properties that make them potentially useful in clinical, research and industrial settings. However, a growing body of evidence indicates that like other engineered nanomaterials, QDs have the potential to be respiratory hazards, especially in the context of the manufacture of QDs and products containing them, as well as exposures to consumers using these products. The overall goal of this study was to investigate the role of mouse strain in determining susceptibility to QD-induced pulmonary inflammation and toxicity. Male mice from 8 genetically diverse inbred strains (the Collaborative Cross founder strains) were exposed to CdSe-ZnS core-shell QDs stabilized with an amphiphilic polymer. QD treatment resulted in significant increases in the percentage of neutrophils and levels of cytokines present in bronchoalveolar lavage fluid (BALF) obtained from NOD/ShiLtJ and NZO/HlLtJ mice relative to their saline (Sal) treated controls. Cadmium measurements in lung tissue indicated strain-dependent differences in disposition of QDs in the lung. Total glutathione levels in lung tissue were significantly correlated with percent neutrophils in BALF as well as with lung tissue Cd levels. Our findings indicate that QD-induced acute lung inflammation is mouse strain dependent, that it is heritable, and that the choice of mouse strain is an important consideration in planning QD toxicity studies. These data also suggest that formal genetic analyses using additional strains or recombinant inbred strains from these mice could be useful for discovering potential QD-induced inflammation susceptibility loci. (C) 2015 Elsevier Inc. All rights reserved.
C1 [Scoville, David K.; White, Collin C.; Botta, Dianne; McConnachie, Lisa A.; Zadworny, Megan E.; Schmuck, Stefanie C.; Yu, Jianbo; Dills, Russell L.; Sheppard, Lianne; Griffith, William C.; Beyer, Richard P.; Faustman, Elaine M.; Kavanagh, Terrance J.] Univ Washington, Dept Environm & Occupat Hlth Sci, Seattle, WA 98195 USA.
[Hu, Xiaoge; Gao, Xiaohu] Univ Washington, Dept Bioengn, Seattle, WA 98195 USA.
[Sheppard, Lianne] Univ Washington, Dept Biostat, Seattle, WA 98195 USA.
[Delaney, Martha A.] Univ Washington, Dept Comparat Med, Seattle, WA 98195 USA.
[Delaney, Martha A.] Univ Washington, Dept Pathol, Seattle, WA 98195 USA.
[Zangar, Richard C.; Pounds, Joel G.] Pacific NW Natl Lab, Syst Toxicol Grp, Div Biol Sci, Richland, WA 99352 USA.
RP Kavanagh, TJ (reprint author), Univ Washington, Dept Environm & Occupat Hlth Sci, Box 354695, Seattle, WA 98195 USA.
EM tjkav@uw.edu
RI Gao, Xiaohu/C-8869-2009;
OI Faustman, Elaine/0000-0002-3085-6403
FU NIH [U19ES019545, U19ES019544, R01ES016189, P30ES007033, T32ES015459]
FX The authors wish to thank Drs. Christopher M. Carosino, Samir N. Kelada,
Ivan Rusyn and Terry Gordon for their helpful comments and suggestions.
This work was supported by NIH Grants U19ES019545, U19ES019544,
R01ES016189, P30ES007033 and T32ES015459.
NR 78
TC 2
Z9 2
U1 0
U2 9
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0041-008X
EI 1096-0333
J9 TOXICOL APPL PHARM
JI Toxicol. Appl. Pharmacol.
PD DEC 1
PY 2015
VL 289
IS 2
BP 240
EP 250
DI 10.1016/j.taap.2015.09.019
PG 11
WC Pharmacology & Pharmacy; Toxicology
SC Pharmacology & Pharmacy; Toxicology
GA CX1NC
UT WOS:000365461900012
PM 26476918
ER
PT J
AU Eberhardt, TL
Labbe, N
So, CL
Kim, K
Reed, KG
Leduc, DJ
Warren, JM
AF Eberhardt, Thomas L.
Labbe, Nicole
So, Chi-Leung
Kim, Keonhee
Reed, Karen G.
Leduc, Daniel J.
Warren, Jeffrey M.
TI Effects of long-term elevated CO2 treatment on the inner and outer bark
chemistry of sweetgum (Liquidambar styraciflua L.) trees
SO TREES-STRUCTURE AND FUNCTION
LA English
DT Article
DE Ash; Climate change; Extractives; Lignin; Phloem; Rhytidome
ID RISING ATMOSPHERIC CO2; PRINCIPAL COMPONENT ANALYSIS; STEM WOOD
PROPERTIES; CARBON-DIOXIDE; ENRICHMENT FACE; PELLET QUALITY; NORWAY
SPRUCE; PICEA-ABIES; PINE BARK; RESPONSES
AB Long-term exposure of sweetgum trees to elevated atmospheric CO (2) concentrations significantly shifted inner bark (phloem) and outer bark (rhytidome) chemical compositions, having implications for both defense and nutrient cycling.
Changes in plant tissue chemistry due to increasing atmospheric carbon dioxide (CO2) concentrations have direct implications for tissue resistance to abiotic and biotic stress while living, and soil nutrient cycling when senesced as litter. Although the effects of elevated CO2 concentrations on tree foliar chemistry are well documented, the effects on tree bark chemistry are largely unknown. The objective of this study was to determine the effects of a long-term elevated CO2 treatment on the contents of individual elements, extractives, ash, lignin, and polysaccharide sugars of sweetgum (Liquidambar styraciflua L.) bark. Trees were harvested from sweetgum plots equipped with the Free-Air CO2 Enrichment (FACE) apparatus, receiving either elevated or ambient CO2 treatments over a 12-year period. Whole bark sections were partitioned into inner bark (phloem) and outer bark (rhytidome) samples before analysis. Principal component analysis, coupled with either Fourier transform infrared spectroscopy or pyrolysis-gas chromatography-mass spectrometry data, was also used to screen for differences. Elevated CO2 reduced the N content (0.42 vs. 0.35 %) and increased the C:N ratio (109 vs. 136 %) of the outer bark. For the inner bark, elevated CO2 increased the Mn content (470 vs. 815 mg kg(-1)), total extractives (13.0 vs. 15.6 %), and residual ash content (8.1 vs. 10.8 %) as compared to ambient CO2; differences were also observed for some hemicellulosic sugars, but not lignin. Shifts in bark chemistry can affect the success of herbivores and pathogens in living trees, and as litter, bark can affect the biogeochemical cycling of nutrients within the forest floor. Results demonstrate that increasing atmospheric CO2 concentrations have the potential to impact the chemistry of temperate, deciduous tree bark such as sweetgum.
C1 [Eberhardt, Thomas L.; Reed, Karen G.; Leduc, Daniel J.; Warren, Jeffrey M.] USDA, Forest Serv, Southern Res Stn, Pineville, LA USA.
[Labbe, Nicole; Kim, Keonhee] Univ Tennessee, Ctr Renewable Carbon, Knoxville, TN USA.
[So, Chi-Leung] Louisiana State Univ, Ctr Agr, Sch Renewable Nat Resources, Baton Rouge, LA 70803 USA.
[Warren, Jeffrey M.] Oak Ridge Natl Lab, Climate Change Sci Inst, Oak Ridge, TN USA.
[Warren, Jeffrey M.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
RP Eberhardt, TL (reprint author), USDA, Forest Serv, Forest Prod Lab, One Gifford Pinchot Dr, Madison, WI 53726 USA.
EM teberhardt@fs.fed.us
RI Warren, Jeffrey/B-9375-2012
OI Warren, Jeffrey/0000-0002-0680-4697
FU U.S. Department of Energy, Office of Science, Office of Biological and
Environmental Research [DE-AC05-00OR22725]
FX This material is based upon work supported by the U.S. Department of
Energy, Office of Science, Office of Biological and Environmental
Research, under contract DE-AC05-00OR22725. The authors are grateful to
Fred J. Matt, USDA Forest Service, Forest Products Laboratory, for the
lignin and sugar analyses; Joanne Childs and Holly Vander Stel at ORNL
carried out the total phenolic content analysis.
NR 61
TC 0
Z9 0
U1 3
U2 21
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 0931-1890
EI 1432-2285
J9 TREES-STRUCT FUNCT
JI Trees-Struct. Funct.
PD DEC
PY 2015
VL 29
IS 6
BP 1735
EP 1747
DI 10.1007/s00468-015-1254-8
PG 13
WC Forestry
SC Forestry
GA CX5AE
UT WOS:000365711700009
ER
EF