FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Bharadwaj, N Chandrasekar, V Junyent, F AF Bharadwaj, Nitin Chandrasekar, V. Junyent, Francesc TI Signal Processing System for the CASA Integrated Project I Radars SO JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY LA English DT Article ID DOPPLER WEATHER RADARS; SPECTRAL MOMENT ESTIMATION; AMBIGUITY MITIGATION; GROUND CLUTTER; PRT; RESOLUTION; ALGORITHM; WSR-88D; DESIGN AB This paper describes the waveform design space and signal processing system for dual-polarization Doppler weather radar operating at X band. The performance of the waveforms is presented with ground clutter suppression capability and mitigation of range-velocity ambiguity. The operational waveform is designed based on operational requirements and system/hardware requirements. A dual-Pulse Repetition Frequency (PRF) waveform was developed and implemented for the first generation X-band radars deployed by the Center for Collaborative Adaptive Sensing of the Atmosphere (CASA). This paper presents an evaluation of the performance of the waveforms based on simulations and data collected by the first-generation CASA radars during operations. C1 [Bharadwaj, Nitin] Pacific NW Natl Lab, Richland, WA 99352 USA. [Chandrasekar, V.; Junyent, Francesc] Colorado State Univ, Ft Collins, CO 80523 USA. RP Bharadwaj, N (reprint author), Pacific NW Natl Lab, POB 999 MSIN K4-28, Richland, WA 99352 USA. EM nitin@pnl.gov FU National Science Foundation [0313747] FX This work was supported primarily by the Engineering Research Centers Program of the National Science Foundation under NSF Award Number 0313747. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect those of the National Science Foundation. NR 30 TC 8 Z9 8 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0739-0572 J9 J ATMOS OCEAN TECH JI J. Atmos. Ocean. Technol. PD SEP PY 2010 VL 27 IS 9 BP 1440 EP 1460 DI 10.1175/2010JTECHA1415.1 PG 21 WC Engineering, Ocean; Meteorology & Atmospheric Sciences SC Engineering; Meteorology & Atmospheric Sciences GA 652WS UT WOS:000282042200002 ER PT J AU Giangrande, SE Luke, EP Kollias, P AF Giangrande, Scott E. Luke, Edward P. Kollias, Pavlos TI Automated Retrievals of Precipitation Parameters Using Non-Rayleigh Scattering at 95 GHz SO JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY LA English DT Article ID DROP SIZE DISTRIBUTIONS; VERTICAL AIR MOTION; DOPPLER RADAR; MICROPHYSICAL EVOLUTION; FLORIDA CUMULONIMBUS; CLOUD RADAR; RAIN; RAINDROPS; SPECTRA; REFLECTIVITY AB Automated retrievals of vertical air motion and the drop size distribution (DSD) slope parameter from the surface to the base of the melting layer are presented using a technique for W-band (95 GHz) profiling radars. The technique capitalizes on non-Rayleigh resonance signatures found in the observed Doppler spectra to estimate the mean vertical air motion. The slope parameter of the DSD for an assumed exponential form is retrieved through an inversion of the Doppler spectra. Extended testing is performed in central Oklahoma for a monthlong period of observation that includes several midlatitude convective line trailing stratiform events featuring low to moderate rainfall rates (<1 to 30 mm h(-1)). Low-level DSD slope parameter retrievals are shown in agreement (bias of -1.48 cm(-1) and rms error of 4.38 cm(-1)) with collocated surface disdrometer DSD observations. Velocity retrievals indicate a net downward motion in stratiform rain of 0.05 m s(-1) with a standard deviation of 0.24-0.3 m s(-1). Time-height examples drawn from the available dataset illustrate finescale structures, as well as evidence of drop sorting due to differential terminal velocity and wind shear. C1 [Giangrande, Scott E.; Luke, Edward P.] Brookhaven Natl Lab, Div Atmospher Sci, Upton, NY 11973 USA. [Giangrande, Scott E.; Kollias, Pavlos] McGill Univ, Dept Atmospher & Ocean Sci, Montreal, PQ, Canada. RP Giangrande, SE (reprint author), Brookhaven Natl Lab, Div Atmospher Sci, Bldg 490D,Bell Ave, Upton, NY 11973 USA. EM scott.giangrande@bnl.gov RI Giangrande, Scott/I-4089-2016 OI Giangrande, Scott/0000-0002-8119-8199 FU Office of Biological and Environmental Research, Environmental Sciences Division of the U.S. Department of Energy [DE-FG02-08ER64573] FX Support for this research was funded by the Office of Biological and Environmental Research, Environmental Sciences Division of the U.S. Department of Energy as part of the Atmospheric Radiation Measurement program (Grant DE-FG02-08ER64573). The authors would also like to thank Isztar Zawadzki, Frederick Fabry, and Mark Berenguer of McGill University for helpful discussions, as well as the anonymous reviewers who have greatly improved the quality of this manuscript. NR 43 TC 11 Z9 11 U1 0 U2 2 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0739-0572 J9 J ATMOS OCEAN TECH JI J. Atmos. Ocean. Technol. PD SEP PY 2010 VL 27 IS 9 BP 1490 EP 1503 DI 10.1175/2010JTECHA1343.1 PG 14 WC Engineering, Ocean; Meteorology & Atmospheric Sciences SC Engineering; Meteorology & Atmospheric Sciences GA 652WS UT WOS:000282042200005 ER PT J AU Saka, O Hayashi, K Thomsen, M AF Saka, O. Hayashi, K. Thomsen, M. TI First 10 min intervals of Pi2 onset at geosynchronous altitudes during the expansion of energetic ion regions in the nighttime sector SO JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS LA English DT Article DE Substorm injection; Energetic ions; Pi2; Geosynchronous altitudes ID SUBSTORM CURRENT WEDGE; BURSTY BULK FLOWS; PI-2 PULSATIONS; MAGNETIC PULSATIONS; PLASMA SHEET; SYNCHRONOUS ORBIT; LOW LATITUDES; MAGNETOSPHERIC SUBSTORMS; LONGITUDINAL STRUCTURE; EARTHS MAGNETOTAIL AB We examined the temporal variations of the geomagnetic field and energetic ions at geosynchronous altitudes associated with substorms during the nighttime using a superposed epoch analysis timed by Pi2 onset. We focused on the first 10 min intervals of Pi2 onset and on subsequent intervals to study the substorm expansion. We conclude that the first 10 min interval of Pi2 onset is a transitional state of the substorm dominated by MHD processes associated with earthward flow and its bifurcation. Intervals of field line variations following the first 10 min were well organized by dipolarization (substorm current wedge) due to the reduced cross-tail current. We also show that energetic ion regions localized in the local time sector from 2000 to 0000 LT in the first 10 min intervals of Pi2 onset expanded to the post-midnight sector, reaching 0400 LT within 20 min after Pi2 onset. We conclude that the expansion of the energetic plasma regions can be attributed to the inflation of the inner magnetosphere during dipolarization. (C) 2010 Elsevier Ltd. All rights reserved. C1 [Saka, O.] Off Geophys, Ogoori, Japan. [Hayashi, K.] Univ Tokyo, Tokyo, Japan. [Thomsen, M.] Los Alamos Natl Lab, Los Alamos, NM USA. RP Saka, O (reprint author), Off Geophys, Ogoori, Japan. EM saka.o@nifty.com NR 49 TC 5 Z9 5 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1364-6826 J9 J ATMOS SOL-TERR PHY JI J. Atmos. Sol.-Terr. Phys. PD SEP PY 2010 VL 72 IS 14-15 BP 1100 EP 1109 DI 10.1016/j.jastp.2010.07.006 PG 10 WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences GA 646XL UT WOS:000281578100005 ER PT J AU Chen, J Xie, G Han, S Chertkov, O Sims, D Civerolo, EL AF Chen, J. Xie, G. Han, S. Chertkov, O. Sims, D. Civerolo, E. L. TI Whole Genome Sequences of Two Xylella fastidiosa Strains (M12 and M23) Causing Almond Leaf Scorch Disease in California SO JOURNAL OF BACTERIOLOGY LA English DT Article AB Xylella fastidiosa is a Gram-negative plant-pathogenic bacterium causing many economically important diseases, including almond leaf scorch disease (ALSD) in California. Genome information greatly facilitates research on this nutritionally fastidious organism. Here we report the complete genome sequences of two ALSD strains of this bacterium, M12 and M23. C1 [Chen, J.; Civerolo, E. L.] USDA, San Joaquin Valley Agr Sci Ctr, Parlier, CA 93648 USA. [Xie, G.; Han, S.; Chertkov, O.; Sims, D.] Los Alamos Natl Lab, Biosci Div, Genome Sci Grp, Los Alamos, NM 87545 USA. RP Chen, J (reprint author), USDA, San Joaquin Valley Agr Sci Ctr, Parlier, CA 93648 USA. EM jianchi.chen@ars.usda.gov OI xie, gary/0000-0002-9176-924X FU U.S. Department of Agriculture; U.S. Department of Energy [DE-AC02-05CH11231] FX This research was partially supported by the U.S. Department of Agriculture. 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 DE-AC02-05CH11231. NR 4 TC 18 Z9 642 U1 1 U2 14 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0021-9193 J9 J BACTERIOL JI J. Bacteriol. PD SEP PY 2010 VL 192 IS 17 BP 4534 EP 4534 DI 10.1128/JB.00651-10 PG 1 WC Microbiology SC Microbiology GA 638AX UT WOS:000280863000034 PM 20601474 ER PT J AU Tkac, P Paulenova, A Vandegrift, GF Krebs, JF AF Tkac, Peter Paulenova, Alena Vandegrift, George F. Krebs, John F. TI Modeling of Pu(IV) Extraction by Tri-n-butyl Phosphate from Acidic Nitrate Media Containing Acetohydroxamic Acid SO JOURNAL OF CHEMICAL AND ENGINEERING DATA LA English DT Article ID SIMPLE HYDROXAMIC ACIDS; 30-PERCENT TRIBUTYL-PHOSPHATE; NEPTUNIUM IV IONS; SOLVENT-EXTRACTION; NITRIC-ACID; PLUTONIUM(IV) IONS; COMPLEXATION; SPECIATION; BEHAVIOR; URANIUM AB The presence of acetohydroxamic acid (HAHA), proposed as a holding-back compound for the PUREX process, significantly decreases extraction of Pu by tri-n-butyl phosphate (TBP) due to the formation of strong Pu(IV)-hydroxamate complexes. From the fitting of experimental distribution ratios of Pu, two Pu(IV) species were proposed to be present in the organic phase. The contribution of Pu(NO(3))(4)(TBP)(2) species is relevant only at very low concentrations of HAHA or its absence, while under higher concentrations of HAHA, the mono- and diacetohydroxamate complexes, Pu(AHA)(NO(3))(3)(TBP)(2) and Pu(AHA)(2)(NO(3))(2)(TBP)(2), are the main extracted species. A thermodynamic model describing the speciation of tetravalent plutonium in aqueous solutions of nitric acid and acetohydroxamic acid and its distribution with 0.30 volume fraction tri-n-butyl phosphate in n-dodecane is presented. C1 [Tkac, Peter; Vandegrift, George F.; Krebs, John F.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. [Tkac, Peter] Oregon State Univ, Ctr Radiat, Corvallis, OR 97331 USA. [Paulenova, Alena] Oregon State Univ, Dept Nucl Engn & Radiat Hlth Phys, Corvallis, OR 97331 USA. RP Tkac, P (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. EM tkac@anl.gov RI Tkac, Peter/A-5680-2012 FU U.S. DOE [U-NERI 05-062] FX Received for review February 15, 2010. Accepted May 22, 2010. This work was funded by the U.S. DOE University Program U-NERI 05-062. NR 26 TC 4 Z9 4 U1 0 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0021-9568 J9 J CHEM ENG DATA JI J. Chem. Eng. Data PD SEP PY 2010 VL 55 IS 9 BP 3445 EP 3450 DI 10.1021/je100162y PG 6 WC Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical SC Thermodynamics; Chemistry; Engineering GA 646TX UT WOS:000281567000087 ER PT J AU Jiang, W Roux, B AF Jiang, Wei Roux, Benoit TI Free Energy Perturbation Hamiltonian Replica-Exchange Molecular Dynamics (FEP/H-REMD) for Absolute Ligand Binding Free Energy Calculations SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION LA English DT Article ID COMPUTER-SIMULATIONS; T4 LYSOZYME; OPTIMIZATION; BIOMOLECULES; SPECIFICITY; POTENTIALS; NONPOLAR; CHARMM AB Free Energy Perturbation with Replica Exchange Molecular Dynamics (FEP/REMD) offers a powerful strategy to improve the convergence of free energy computations. In particular, it has been shown previously that a FEP/REMD scheme allowing random moves within an extended replica ensemble of thermodynamic coupling parameters "lambda" can improve the statistical convergence in calculations of absolute binding free energy of ligands to proteins [J. Chem. Theory Comput. 2009, 5, 2583]. In the present study, FEP/REMD is extended and combined with an accelerated MD simulations method based on Hamiltonian replica-exchange MD (H-REMD) to overcome the additional problems arising from the existence of kinetically trapped conformations within the protein receptor. In the combined strategy, each system with a given thermodynamic coupling factor lambda in the extended ensemble is further coupled with a set of replicas evolving on a biased energy surface with boosting potentials used to accelerate the interconversion among different rotameric states of the side chains in the neighborhood of the binding site. Exchanges are allowed to occur alternatively along the axes corresponding to the thermodynamic coupling parameter lambda and the boosting potential, in an extended dual array of coupled lambda- and H-REMD simulations. The method is implemented on the basis of new extensions to the REPDSTR module of the biomolecular simulation program CHARMM. As an illustrative example, the absolute binding free energy of p-xylene to the nonpolar cavity of the L99A mutant of the T4 lysozyme was calculated. The tests demonstrate that the dual lambda-REMD and H-REMD simulation scheme greatly accelerates the configurational sampling of the rotameric states of the side chains around the binding pocket, thereby improving the convergence of the FEP computations. C1 [Jiang, Wei; Roux, Benoit] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. [Roux, Benoit] Univ Chicago, Dept Biochem & Mol Biol, Gordon Ctr Integrat Sci, Chicago, IL 60637 USA. RP Roux, B (reprint author), Argonne Natl Lab, Biosci Div, 9700 S Cass Ave,Bldg 240, Argonne, IL 60439 USA. EM roux@uchicago.edu FU National Science Foundation [MCB-0920261]; Office of Science of the U.S. Department of Energy (DOE) [DE-AC02-06CH11357]; U.S. DOE Office of Science laboratory [DE-AC02-06CH11357]; DOE FX We are grateful to Dr. Andrew Binkowski for his support. We would like to acknowledge Dr. Milan Hodoscek for collaboration with the programming work for the CHARMM REPDSTR module, and Dr. Albert Lau for valuable discussions about free energy calculations and the replica-exchange scheme. This research is funded by grant MCB-0920261 from the National Science Foundation. Access to the computational resources of ALCF at ANL, supported by the Office of Science of the U.S. Department of Energy (DOE) under contract DE-AC02-06CH11357, was made possible by an INCITE grant from the DOE. The submitted manuscript has been created by UChicago Argonne, LLC, Operator of ANL. ANL, a U.S. DOE Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. NR 25 TC 84 Z9 84 U1 4 U2 31 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 SEP PY 2010 VL 6 IS 9 BP 2559 EP 2565 DI 10.1021/ct1001768 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 648KQ UT WOS:000281693000001 PM 21857813 ER PT J AU Johnson, Q Doshi, U Shen, TY Hamelberg, D AF Johnson, Quentin Doshi, Urmi Shen, Tongye Hamelberg, Donald TI Water's Contribution to the Energetic Roughness from Peptide Dynamics SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION LA English DT Article ID HYDROGEN-BOND NETWORK; CIS-TRANS ISOMERIZATION; LIQUID WATER; PROTEIN DYNAMICS; SELF-DIFFUSION; LANDSCAPE ROUGHNESS; POTENTIAL FUNCTIONS; MODEL; REARRANGEMENTS; SIMULATIONS AB Water plays a very important role in the dynamics and function of proteins. Apart from protein protein and protein water interactions, protein motions are accompanied by the formation and breakage of hydrogen-bonding network of the surrounding water molecules. This ordering and reordering of water also adds to the underlying roughness of the energy landscape of proteins and thereby alters their dynamics. Here, we extract the contribution of water to the ruggedness (in terms of an energy scale 0 of the energy landscape from molecular dynamics simulations of a peptide substrate analogue of prolyl cis-trans isomerases. In order to do so, we develop and implement a model based on the position space analog of the Ornstein-Uhlenbeck process and Zwanzig's theory of diffusion on a rough potential. This allows us to also probe an important property of the widely used atomistic simulation water models that directly affects the dynamics of biomolecular systems and highlights the importance of the choice of the water model in studying protein dynamics. We show that water contributes an additional roughness to the energy landscape. At lower temperatures this roughness, which becomes comparable to k(B)T, can considerably slow down protein dynamics. These results also have much broader implications for the function of some classes of enzymes, since the landscape topology of their substrates may change upon moving from an aqueous environment into the binding site. C1 [Johnson, Quentin; Doshi, Urmi; Hamelberg, Donald] Georgia State Univ, Dept Chem, Atlanta, GA 30302 USA. [Johnson, Quentin; Doshi, Urmi; Hamelberg, Donald] Georgia State Univ, Ctr Biotechnol & Drug Design, Atlanta, GA 30302 USA. [Shen, Tongye] Univ Tennessee, Dept Biochem Cellular & Mol Biol, Knoxville, TN 37996 USA. [Shen, Tongye] Oak Ridge Natl Lab, Ctr Biophys Mol, Oak Ridge, TN 37830 USA. RP Hamelberg, D (reprint author), Georgia State Univ, Dept Chem, Atlanta, GA 30302 USA. EM dhamelberg@gsu.edu RI Shen, Tongye/A-9718-2008 OI Shen, Tongye/0000-0003-1495-3104 FU National Science Foundation [MCB-0953061]; Georgia Cancer Coalition; Georgia State's IBM System p5 super-computer FX This work was supported in part by the National Science Foundation CAREER MCB-0953061 (D.H.) and Georgia Cancer Coalition (D.H.). This work was also supported by Georgia State's IBM System p5 super-computer, acquired through a partnership of the Southeastern Universities Research Association and IBM supporting the SURAgrid initiative. NR 52 TC 20 Z9 20 U1 0 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 SEP PY 2010 VL 6 IS 9 BP 2591 EP 2597 DI 10.1021/ct100183s PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 648KQ UT WOS:000281693000004 PM 26616063 ER PT J AU Aquino, F Govind, N Autschbach, J AF Aquino, Fredy Govind, Niranjan Autschbach, Jochen TI Electric Field Gradients Calculated from Two-Component Hybrid Density Functional Theory Including Spin-Orbit Coupling SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION LA English DT Article ID ORDER REGULAR APPROXIMATION; RELATIVISTIC PERTURBATION-THEORY; NUCLEAR-QUADRUPOLE MOMENTS; AB-INITIO; COMPUTATIONAL CHEMISTRY; MOLECULAR INTEGRALS; CORRELATION-ENERGY; BASIS-SETS; O-17 NMR; COMPLEXES AB An implementation of a four-component density corrected approach for calculations of nuclear electric field gradients (EFGs) in molecules based on the two-component relativistic zeroth-order regular approximation (ZORA) is reported. The program module, which is part of the NWChem package, allows for scalar and spin orbit relativistic computations of EFGs. Benchmark density functional calculations are reported for a large set of main group diatomic molecules, a set of Cu and Au diatomics, several Ru and Nb complexes, the free uranyl ion, and two uranyl carbonate complexes. Data obtained from nonhybrid as well as fixed and range-separated hybrid functionals are compared. To allow for a chemically intuitive interpretation of the results, a breakdown of the EFGs of selected systems in terms of localized molecular orbitals is given. For CuF, CuCl, AuCl, UO(2)(2+), and a uranyl carbonate complex, the localized orbital decomposition demonstrates in particular the role of the valence metal d and f shells, respectively, and leads to rather compact analyses. For f orbitals, a Townes-Dailey-like model is set up to assist the analysis. C1 [Aquino, Fredy; Autschbach, Jochen] SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA. [Govind, Niranjan] Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. RP Autschbach, J (reprint author), SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA. EM jochena@buffalo.edu RI Govind, Niranjan/D-1368-2011; Autschbach, Jochen/S-5472-2016 OI Autschbach, Jochen/0000-0001-9392-877X FU Center of Computational Research at SUNY Buffalo; US Department of Energy [DE-SC0001136]; Department of Energy's Office of Biological and Environmental Research at Pacific Northwest National Laboratory; U.S. Department of Energy, Office of Science FX The authors acknowledge support of this research from the Center of Computational Research at SUNY Buffalo, and financial support from the US Department of Energy, grant no. DE-SC0001136 (BES Heavy Element Chemistry Program). Some calculations were 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. N.G. would like to acknowledge the DOE BES Heavy Element Chemistry Program (PI: De Jong) of the U.S. Department of Energy, Office of Science for helping support the ZORA code development. NR 101 TC 27 Z9 27 U1 1 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1549-9618 J9 J CHEM THEORY COMPUT JI J. Chem. Theory Comput. PD SEP PY 2010 VL 6 IS 9 BP 2669 EP 2686 DI 10.1021/ct1002847 PG 18 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 648KQ UT WOS:000281693000009 PM 26616068 ER PT J AU Storlie, CB Bondell, HD Reich, BJ AF Storlie, Curtis B. Bondell, Howard D. Reich, Brian J. TI A Locally Adaptive Penalty for Estimation of Functions With Varying Roughness SO JOURNAL OF COMPUTATIONAL AND GRAPHICAL STATISTICS LA English DT Article DE L-Spline; Local bandwidth; Nonparametric regression; Regularization method; Spatially adaptive smoothing; SS-ANOVA ID SMOOTHING SPLINES; NONPARAMETRIC REGRESSION; MODELS AB We propose a new regularization method called Loco-Spline for nonparametric function estimation. Loco-Spline uses a penalty which is data driven and locally adaptive. This allows for more flexible estimation of the function in regions of the domain where it has more curvature, without over fitting in regions that have little curvature. This methodology is also transferred into higher dimensions via the Smoothing Spline ANOVA framework. General conditions for optimal MSE rate of convergence are given and the Loco-Spline is shown to achieve this rate. In our simulation study, the Loco-Spline substantially outperforms the traditional smoothing spline and the locally adaptive kernel smoother. Code to fit Loco-Spline models is included with the Supplemental Materials for this article which are available online. C1 [Storlie, Curtis B.] Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM 87545 USA. [Bondell, Howard D.] N Carolina State Univ, Dept Stat, Raleigh, NC 27695 USA. [Reich, Brian J.] N Carolina State Univ, Dept Stat, Raleigh, NC 27695 USA. RP Storlie, CB (reprint author), Los Alamos Natl Lab, Stat Sci Grp, MS F600, Los Alamos, NM 87545 USA. EM storlie@lanl.gov; howard_bondell@ncsu.edu; brian_reich@ncsu.edu FU National Science Foundation [DMS-0705968]; Sandia National Laboratories [SURP 22858] FX The authors thank the National Science Foundation (grant DMS-0705968) and Sandia National Laboratories (grant SURP 22858) for partial support of this work. The authors are grateful to the reviewers for their most constructive comments, most of which are incorporated in the current version of this article. NR 28 TC 7 Z9 7 U1 0 U2 0 PU AMER STATISTICAL ASSOC PI ALEXANDRIA PA 732 N WASHINGTON ST, ALEXANDRIA, VA 22314-1943 USA SN 1061-8600 J9 J COMPUT GRAPH STAT JI J. Comput. Graph. Stat. PD SEP PY 2010 VL 19 IS 3 BP 569 EP 589 DI 10.1198/jcgs.2010.09020 PG 21 WC Statistics & Probability SC Mathematics GA 658JF UT WOS:000282485600005 ER PT J AU Waldher, B Kuta, J Chen, S Henson, N Clark, AE AF Waldher, Benjamin Kuta, Jadwiga Chen, Samuel Henson, Neil Clark, Aurora E. TI ForceFit: A Code to Fit Classical Force Fields to Quantum Mechanical Potential Energy Surfaces SO JOURNAL OF COMPUTATIONAL CHEMISTRY LA English DT Article DE force matching; force field; potential energy surfaces ID ELECTRONIC-STRUCTURE CALCULATIONS; MOLECULAR-DYNAMICS SIMULATIONS; ALKYL FUNCTIONAL-GROUP; AB-INITIO; WATER MODEL; ALKANE MOLECULES; 1,2-DIMETHOXYETHANE; DERIVATION; CONFORMATIONS; ENERGETICS AB The ForceFit program package has been developed for fitting classical force field parameters based upon a force matching algorithm to quantum mechanical gradients of configurations that span the potential energy surface of the system. The program, which runs under UNIX and is written in C++, is an easy-to-use. nonproprietary platform that enables gradient fitting of a wide variety of functional force field forms to quantum mechanical information obtained from an array of common electronic structure codes. All aspects of the fitting process are run from a graphical user interface, from the parsing of quantum mechanical data, assembling of a potential energy surface database, setting the force field, and variables to be optimized, choosing a molecular mechanics code for comparison to the reference data, and finally, the initiation of a least squares minimization algorithm. Furthermore, the code is based on a modular templated code design that enables the facile addition of new functionality to the program. (C) 2010 Wiley Periodicals, Inc. J Comput Chem 31: 2307-2316. 2010 C1 [Waldher, Benjamin; Kuta, Jadwiga; Chen, Samuel; Clark, Aurora E.] Washington State Univ, Dept Chem, Pullman, WA 99164 USA. [Henson, Neil] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87544 USA. RP Clark, AE (reprint author), Washington State Univ, Dept Chem, Pullman, WA 99164 USA. EM auclark@wsu.edu OI Henson, Neil/0000-0002-1842-7884 FU US Department of Energy, Office of Nuclear Energy Science and Technology [DE-FG07-051D14692/IDNE006]; U. S. Department of Energy [U. S. Department of Energy under contract DE-AC52-06NA25396] FX Contract/grant sponsor: US Department of Energy, Office of Nuclear Energy Science and Technology: contract/grant numbers: DE-FG07-051D14692/IDNE006 (Junior Faculty Award Program); Los Alamos National Laboratory 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. This paper has been designated LA-UR 09-06693. The authors would like to thank Dr. Matthew Wander for his thoughtful comments during the algorithm development. NR 44 TC 21 Z9 21 U1 2 U2 15 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0192-8651 J9 J COMPUT CHEM JI J. Comput. Chem. PD SEP PY 2010 VL 31 IS 12 BP 2307 EP 2316 DI 10.1002/jcc.21523 PG 10 WC Chemistry, Multidisciplinary SC Chemistry GA 628KL UT WOS:000280118400009 PM 20340109 ER PT J AU Barham, MI White, DA Steigmann, DJ AF Barham, Matthew I. White, Daniel A. Steigmann, David J. TI Finite element modeling of the deformation of magnetoelastic film SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE Magnetoelastic; Magnetics; Deformation; Finite element ID EDDY-CURRENT PROBLEMS; FORMULATIONS; SENSORS; ELASTOMERS; CURRENTS; FIELD AB Recently a new class of biocompatible elastic polymers loaded with small ferrous particles, a magnetoelastic polymer, has been developed. This engineered material is formed into a thin film using spin casting. An applied magnetic field will deform the film. The magnetic deformation of this film has many possible applications, particularly in microfluidic pumps and pressure regulators. In this paper a finite element method suitable for the transient simulation of arbitrarily shaped three-dimensional magnetoelastic polymers subjected to time-varying magnetic fields is developed. The approach is similar to that employed in finite elment magnetohydrodynamic simulations, the key difference is a more complex hyperelastic material model. In order to confirm the validity of the approach, finite element solutions for an axially symmetric thin film are compared to an analytical solution based on the membrane (infinitely thin) approximation. For this particular problem the two approaches give qualitatively similar results and converge as the film thickness approaches zero. Published by Elsevier Inc. C1 [Barham, Matthew I.; White, Daniel A.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Steigmann, David J.] Univ Calif Berkeley, Berkeley, CA 94720 USA. RP White, DA (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94551 USA. EM white37@llnl.gov FU US Department of Energy, University of California; Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX This work was performed under the auspices of the US Department of Energy by the University of California, Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. NR 26 TC 15 Z9 15 U1 0 U2 18 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD SEP 1 PY 2010 VL 229 IS 18 BP 6193 EP 6207 DI 10.1016/j.jcp.2010.04.007 PG 15 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 630DA UT WOS:000280251100002 ER PT J AU Adams, MF Samtaney, R Brandt, A AF Adams, Mark F. Samtaney, Ravi Brandt, Achi TI Toward textbook multigrid efficiency for fully implicit resistive magnetohydrodynamics SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE Nonlinear multigrid; Defect correction; Implicit magnetohydrodynamics ID STEADY EULER EQUATIONS AB Multigrid methods can solve some classes of elliptic and parabolic equations to accuracy below the truncation error with a work-cost equivalent to a few residual calculations so-called "textbook" multigrid efficiency. We investigate methods to solve the system of equations that arise in time dependent magnetohydrodynamics (MHD) simulations with textbook multigrid efficiency. We apply multigrid techniques such as geometric interpolation, full approximate storage, Gauss-Seidel smoothers, and defect correction for fully implicit, nonlinear, second-order finite volume discretizations of MHD. We apply these methods to a standard resistive MHD benchmark problem, the GEM reconnection problem, and add a strong magnetic guide field, which is a critical characteristic of magnetically confined fusion plasmas. We show that our multigrid methods can achieve near textbook efficiency on fully implicit resistive MHD simulations. (C) 2010 Elsevier Inc. All rights reserved. C1 [Adams, Mark F.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA. [Samtaney, Ravi] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. [Brandt, Achi] Weizmann Inst Sci, Dept Comp Sci & Appl Math, IL-76100 Rehovot, Israel. RP Samtaney, R (reprint author), KAUST, Div Phys Sci & Engn, Thuwal 239556900, Saudi Arabia. EM samtaney@pppl.gov FU DOE (USDOE) [DE-AC02-09CH11466]; Office of Science of the US Department of Energy [DE-AC05-00OR22725, DE-AC02-05CH11231] FX This work was supported under the DOE SciDAC program (USDOE Contract No. DE-AC02-09CH11466) performed at Princeton Plasma Physics Laboratory, Princeton University, and Columbia University. This research used resources of the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the US Department of Energy under Contract No. DE-AC05-00OR22725. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the US Department of Energy under Contract No. DE-AC02-05CH11231. We gratefully acknowledge verification data from the SciDAC Center for Extended MUD Modeling. NR 25 TC 9 Z9 9 U1 0 U2 24 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9991 EI 1090-2716 J9 J COMPUT PHYS JI J. Comput. Phys. PD SEP 1 PY 2010 VL 229 IS 18 BP 6208 EP 6219 DI 10.1016/j.jcp.2010.04.024 PG 12 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 630DA UT WOS:000280251100003 ER PT J AU Hirshman, SP Perumalla, KS Lynch, VE Sanchez, R AF Hirshman, S. P. Perumalla, K. S. Lynch, V. E. Sanchez, R. TI BCYCLIC: A parallel block tridiagonal matrix cyclic solver SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE Cyclic reduction; Block matrix; Dense blocks; Tridiagonal matrix; Thomas algorithm; Parallel computing ID REDUCTION ALGORITHM; LINEAR-SYSTEMS AB A block tridiagonal matrix is factored with minimal fill-in using a cyclic reduction algorithm that is easily parallelized. Storage of the factored blocks allows the application of the inverse to multiple right-hand sides which may not be known at factorization time. Scalability with the number of block rows is achieved with cyclic reduction, while scalability with the block size is achieved using multithreaded routines (OpenMP, GotoBLAS) for block matrix manipulation. This dual scalability is a noteworthy feature of this new solver, as well as its ability to efficiently handle arbitrary (non-powers-of-2) block row and processor numbers. Comparison with a state-of-the art parallel sparse solver is presented. It is expected that this new solver will allow many physical applications to optimally use the parallel resources on current supercomputers. Example usage of the solver in magneto-hydrodynamic (MHD), three-dimensional equilibrium solvers for high-temperature fusion plasmas is cited. (C) 2010 Elsevier Inc. All rights reserved. C1 [Hirshman, S. P.; Perumalla, K. S.; Lynch, V. E.; Sanchez, R.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RP Hirshman, SP (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. EM hirshmansp@ornl.gov RI Lynch, Vickie/J-4647-2012; OI Lynch, Vickie/0000-0002-5836-7636; Perumalla, Kalyan/0000-0002-7458-0832 FU United States Government [DE-AC05-00OR22725] FX This submission was sponsored by a contractor of the United States Government under contract DE-AC05-00OR22725 with the United States Department of Energy. The United States Government retains, and the publisher, by accepting this submission 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 submission, or allow others to do so, for United States Government purposes.; This research has been sponsored by the US Department of Energy under Contract DE-AC05-00OR22725 with UT-Battelle, LLC.; This research used resources of the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the Department of Energy under Contract DE-AC05-00OR22725. NR 23 TC 17 Z9 18 U1 1 U2 8 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9991 EI 1090-2716 J9 J COMPUT PHYS JI J. Comput. Phys. PD SEP 1 PY 2010 VL 229 IS 18 BP 6392 EP 6404 DI 10.1016/j.jcp.2010.04.049 PG 13 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 630DA UT WOS:000280251100012 ER PT J AU Samaddar, D Newman, DE Sanchez, R AF Samaddar, D. Newman, D. E. Sanchez, R. TI Parallelization in time of numerical simulations of fully-developed plasma turbulence using the parareal algorithm SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE Time parallelization; Parareal algorithm; Turbulent transport; Plasma turbulence; Magnetically confined plasmas ID INITIAL-VALUE PROBLEMS; DRIFT-WAVE TURBULENCE; DIFFERENTIAL-EQUATIONS; MODEL; INTEGRATORS AB It is shown that numerical simulations of fully-developed plasma turbulence can be successfully parallelized in time using the parareal algorithm. The result is far from trivial, and even unexpected, since the exponential divergence of Lagrangian trajectories as well as the extreme sensitivity to initial conditions characteristic of turbulence set these type of simulations apart from the much simpler systems to which the parareal algorithm has been applied to this day. It is also shown that the parallel gain obtainable with this method is very promising (close to an order of magnitude for the cases and implementations described), even when it scales with the number of processors quite differently to what is typical for spatial parallelization. (C) 2010 Elsevier Inc. All rights reserved. C1 [Samaddar, D.; Newman, D. E.] Univ Alaska, Dept Phys, Fairbanks, AK 99775 USA. [Sanchez, R.] Oak Ridge Natl Lab, Div Fus Energy, Oak Ridge, TN 37831 USA. RP Samaddar, D (reprint author), Univ Alaska, Dept Phys, Fairbanks, AK 99775 USA. EM dsamaddar@alaska.edu FU DOE Office of Science [DE-FG02-04ER54741] FX Part of the research was carried out at the University of Alaska Fairbanks, funded by the DOE Office of Science Grant No. DE-FG02-04ER54741. Research was also carried out in part at Oak Ridge National Laboratory, managed by UT-Battelle LLC, for US DOE under Contract No. DE-AC05-00OR22725, and funded via the Seed Money Initiative Program. For simulation runs, the authors are thankful for grants for the use of supercomputing resources at the University of Alaska's Arctic Region Supercomputing Center (ARSC) in Fairbanks. We also acknowledge valuable discussion with L. Chacon, L.A. Berry and W. Elwasif at ORNL. NR 28 TC 18 Z9 18 U1 1 U2 6 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD SEP 1 PY 2010 VL 229 IS 18 BP 6558 EP 6573 DI 10.1016/j.jcp.2010.05.012 PG 16 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 630DA UT WOS:000280251100021 ER PT J AU Callaghan, S Deelman, E Gunter, D Juve, G Maechling, P Brooks, C Vahi, K Milner, K Graves, R Field, E Okaya, D Jordan, T AF Callaghan, Scott Deelman, Ewa Gunter, Dan Juve, Gideon Maechling, Philip Brooks, Christopher Vahi, Karan Milner, Kevin Graves, Robert Field, Edward Okaya, David Jordan, Thomas TI Scaling up workflow-based applications SO JOURNAL OF COMPUTER AND SYSTEM SCIENCES LA English DT Article; Proceedings Paper CT 3rd International Workshop on Workflow Management and Applications in Grid Environments (WaGe2008) CY MAY 25, 2008 CL Kunming, PEOPLES R CHINA DE Scientific workflows; Distributed applications; Workflow scalability AB Scientific applications, often expressed as workflows are making use of large-scale national cyberinfrastructure to explore the behavior of systems, search for phenomena in large-scale data, and to conduct many other scientific endeavors As the complexity of the systems being studied grows and as the data set sizes Increase, the scale of the computational workflows increases as well. In some cases, workflows now have hundreds of thousands of individual tasks Managing such scale is difficult from the point of view of workflow description, execution, and analysis In this paper, we describe the challenges faced by workflow management and performance analysis systems when dealing with an earthquake science application. CyberShake, executing on the TeraGrid. The scientific goal of the SCEC CyberShake project is to calculate probabilistic seismic hazard curves for sites in Southern California. For each site of interest, the CyberShake platform includes two large-scale MPI calculations and approximately 840,000 embarrassingly parallel post-processing jobs. In this paper, we show how we approach the scalability challenges in our workflow management and log mining systems. (C) 2009 Elsevier Inc. All rights reserved. C1 [Deelman, Ewa; Vahi, Karan] USC Informat Sci Inst, Marina Del Rey, CA 90292 USA. [Callaghan, Scott; Juve, Gideon; Maechling, Philip; Milner, Kevin; Okaya, David; Jordan, Thomas] Univ So Calif, Los Angeles, CA 90089 USA. [Graves, Robert] URS Corp, Pasadena, CA 91101 USA. [Field, Edward] US Geol Survey, Pasadena, CA 91106 USA. [Gunter, Dan] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Brooks, Christopher] Univ San Francisco, San Francisco, CA 94117 USA. RP Deelman, E (reprint author), USC Informat Sci Inst, Marina Del Rey, CA 90292 USA. RI Graves, Robert/B-2401-2013 NR 50 TC 15 Z9 15 U1 0 U2 2 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0022-0000 J9 J COMPUT SYST SCI JI J. Comput. Syst. Sci. PD SEP PY 2010 VL 76 IS 6 SI SI BP 428 EP 446 DI 10.1016/j.jcss.2009.11.005 PG 19 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA 610AS UT WOS:000278701700005 ER PT J AU Jeong, E Baccigalupi, C Smoot, GF AF Jeong, E. Baccigalupi, Carlo Smoot, G. F. TI Probing cosmic strings with satellite CMB measurements SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS LA English DT Article DE cosmological phase transitions; Cosmic strings; domain walls; monopoles; cosmological parameters from CMBR ID MICROWAVE-ANISOTROPY; PREDICTIONS; FREQUENCIES; EMISSION; SEARCH; WMAP AB We study the problem of searching for cosmic string signal patterns in the present high resolution and high sensitivity observations of the Cosmic Microwave Background (CMB). This article discusses a technique capable of recognizing Kaiser-Stebbins effect signatures in total intensity anisotropy maps from isolated strings. We derive the statistical distributions of null detections from purely Gaussian fluctuations and instrumental performances of the operating satellites, and show that the biggest factor that produces confusion is represented by the acoustic oscillation features of the scale comparable to the size of horizon at recombination. Simulations show that the distribution of null detections converges to a chi(2) distribution, with detectability threshold at 99% confidence level corresponding to a string induced step signal with an amplitude of about 100 mu K which corresponds to a limit of roughly G mu similar to 1.5 x 10(-6). We implement simulations for deriving the statistics of spurious detections caused by extra-Galactic and Galactic foregrounds. For diffuse Galactic foregrounds, which represents the dominant source of contamination, we construct sky masks outlining the available region of the sky where the Galactic confusion is sub-dominant, specializing our analysis to the case represented by the frequency coverage and nominal sensitivity and resolution of the Planck experiment. As for other CMB measurements, the maximum available area, corresponding to 7%, is reached where the foreground emission is expected to be minimum, in the 70-100 GHz interval. C1 [Jeong, E.; Baccigalupi, Carlo] SISSA, I-34136 Trieste, Italy. [Baccigalupi, Carlo] INAF Osservatorio Astron Trieste, I-34131 Trieste, Italy. [Baccigalupi, Carlo] INFN Natl Inst Nucl Phys, I-34127 Trieste, Italy. [Smoot, G. F.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Smoot, G. F.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Smoot, G. F.] Ewha Womans Univ, Inst Early Universe, Seoul 120750, South Korea. [Smoot, G. F.] Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea. [Smoot, G. F.] Univ Paris, Chaire Blaise Pascal, F-75252 Paris, France. RP Jeong, E (reprint author), SISSA, Via Bonomea 265, I-34136 Trieste, Italy. EM ehjeong@sissa.it; bacci@sissa.it; gfsmoot@lbl.gov NR 37 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 SEP PY 2010 IS 9 AR 018 DI 10.1088/1475-7516/2010/09/018 PG 13 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 672IN UT WOS:000283576500018 ER PT J AU Sorensen, P AF Sorensen, Peter TI A coherent understanding of low-energy nuclear recoils in liquid xenon SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS LA English DT Article DE dark matter detectors; dark matter experiments ID SCINTILLATION AB Liquid xenon detectors such as XENON10 and XENON100 obtain a significant fraction of their sensitivity to light (less than or similar to 10GeV) particle dark matter by looking for nuclear recoils of only a few keV, just above the detector threshold. Yet in this energy regime a correct treatment of the detector threshold and resolution remains unclear. The energy dependence of the scintillation yield of liquid xenon for nuclear recoils also bears heavily on detector sensitivity, yet numerous measurements have not succeeded in obtaining concordant results. In this article we show that the ratio of detected ionization to scintillation can be leveraged to constrain the scintillation yield. We also present a rigorous treatment of liquid xenon detector threshold and energy resolution. Notably, the effective energy resolution differs significantly from a simple Poisson distribution. We conclude with a calculation of dark matter exclusion limits, and show that existing data from liquid xenon detectors strongly constrain recent interpretations of light dark matter. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Sorensen, P (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA. EM pfs@llnl.gov NR 34 TC 31 Z9 31 U1 0 U2 1 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 SEP PY 2010 IS 9 AR 033 DI 10.1088/1475-7516/2010/09/033 PG 20 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 672IN UT WOS:000283576500003 ER PT J AU Liliental-Weber, Z AF Liliental-Weber, Z. TI Extended defects in bulk GaN and III-nitrides grown on this substrate SO JOURNAL OF CRYSTAL GROWTH LA English DT Article; Proceedings Paper CT 6th International Workshop on Bulk Nitride Semiconductors CY AUG 23-28, 2009 CL Galindia, POLAND DE Line defects; Planar defects; Growth from solution; Nitrides; Semiconducting III-V materials ID CHEMICAL-VAPOR-DEPOSITION; STRUCTURAL-CHARACTERIZATION; AMMONOTHERMAL METHOD; FILMS; CRACKING; LAYERS; PRESSURE; CRYSTALS; HVPE; CRYSTALLIZATION AB A short review of the structural perfection of high-pressure grown bulk crystals is given. As-grown undoped and Mg-doped crystals are described. The dependence of defect arrangement and quality of the surface on growth polarity is described. A high perfection of homoepitaxial layers grown on these substrates is shown. However, growth of thick layers by HVPE may lead to the formation of differently arranged dislocations and the formation of low angle grain boundaries associated with cracks. It is shown that the introduction of dopant or growth of mismatched layers on undoped high-pressure substrates may lead to the formation of additional defects. (C) 2010 Published by Elsevier B.V. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Liliental-Weber, Z (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, M-S 62R203-8255, Berkeley, CA 94720 USA. EM z_liliental-weber@lbl.gov RI Liliental-Weber, Zuzanna/H-8006-2012 NR 47 TC 3 Z9 3 U1 7 U2 18 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-0248 J9 J CRYST GROWTH JI J. Cryst. Growth PD SEP 1 PY 2010 VL 312 IS 18 BP 2599 EP 2606 DI 10.1016/j.jcrysgro.2010.04.019 PG 8 WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied SC Crystallography; Materials Science; Physics GA 642AB UT WOS:000281173900020 ER PT J AU Okugawa, Y Bascom, JJ Hirai, Y AF Okugawa, Yoji Bascom, J. Jamie Hirai, Yohei TI Epimorphin-derived peptide antagonists remedy epidermal parakeratosis triggered by unsaturated fatty acid SO JOURNAL OF DERMATOLOGICAL SCIENCE LA English DT Article DE Epidermis; Hyperplasia; Epimorphin; Antagonist; Syntaxin; Oleic acid ID MAMMARY EPITHELIAL-CELLS; HAIR FOLLICLE ANAGEN; HUMAN KERATINOCYTES; EICOSAPENTAENOIC ACID; HACAT KERATINOCYTES; MURINE EPIDERMIS; CALCIUM INFLUX; OLEIC-ACID; TNF-ALPHA; DIFFERENTIATION AB Background: Unsaturated fatty acid from accumulated sebum disrupts calcium influx in keratinocytes and triggers epidermal hyperplasia, leading to comedone formation in the skin. Oleic acid, a representative unsaturated fatty acid, has been shown to be a useful reagent to induce these cellular alternations, however, the detailed mechanism still remains to be elucidated. Objectives: This study aimed at the identification of the mediator of unsaturated fatty acid-caused epidermal hyperplasia so as to generate the effective therapeutic agents. Methods: The downstream mediator of oleic acid-treatment was identified in the epidermal keratinocyte and the effect of its antagonistic peptides on the epidermal behaviors was investigated in culture and in vivo. Results: In culture, treatment with oleic acid augmented extracellular secretion of epimorphin in HaCaT keratinocytes and prevented the epidermal terminal differentiation including programmed cell death and cornified envelope formation. The antagonistic peptide of epimorphin (EPn1: a circular compound composed of CGSIEQSC), which was newly generated in this study, restored normal keratinocyte behaviors. In hairless mice, topical application of oleic acid to the dorsal skin caused epidermal hyperplasia with decreased enucleation in the horny layer, which was dramatically hampered by the administration of EPn1. Conclusions: The effects of unsaturated fatty acid are attributed to the overstimulation of epimorphin signaling and suggest the epimorphin antagonist as a possible therapeutic agent for acne and hyperkeratotic skin disease. (C) 2010 Japanese Society for Investigative Dermatology. Published by Elsevier Ireland Ltd. All rights reserved. C1 [Okugawa, Yoji; Hirai, Yohei] Kwansei Gakuin Univ, Sch Sci & Engn, Dept Biosci, Sanda 6691337, Japan. [Bascom, J. Jamie] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Hirai, Y (reprint author), Kwansei Gakuin Univ, Sch Sci & Engn, Dept Biosci, 2-1 Gakuen, Sanda 6691337, Japan. EM y-hirai@kwansei.ac.jp NR 39 TC 5 Z9 5 U1 3 U2 6 PU ELSEVIER IRELAND LTD PI CLARE PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND SN 0923-1811 J9 J DERMATOL SCI JI J. Dermatol. Sci. PD SEP PY 2010 VL 59 IS 3 BP 176 EP 183 DI 10.1016/j.jdermsci.2010.07.004 PG 8 WC Dermatology SC Dermatology GA 652UN UT WOS:000282035900004 PM 20688483 ER PT J AU Kumar, RS Balasubramanian, M Jacobsen, M Bommannavar, A Kanatzidis, M Yoneda, S Cornelius, AL AF Kumar, Ravhi S. Balasubramanian, Mahalingam Jacobsen, Matthew Bommannavar, Arunkumar Kanatzidis, Mercouri Yoneda, Seiji Cornelius, Andrew L. TI Structural Phase Transitions and Thermoelectric Properties of AgPb18SbTe20 Under Compression SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT 28th International Conference on Thermoelectrics/7th European Conference on Thermoelectrics CY JUL 26-30, 2009 CL Freiburg, GERMANY DE AgPb18SbTe20; x-ray diffraction; structural phase transition ID HIGH-PRESSURE; HIGH FIGURE; MERIT; ENHANCEMENT; PBTE AB The high-figure-of-merit thermoelectric material AgPb18SbTe20 has been investigated by in situ angular-dispersive x-ray diffraction (XRD) and x-ray absorption fine-structure (XAFS) measurements up to 30 GPa. Resistivity and thermopower were measured with Bridgman-type opposed metal anvil cells. The results show that the ambient cubic (Fm (3) over barm) structure transforms to orthorhombic (Pnma) at 6.4 GPa and then to the CsCl-type (Pm (3) over barm) structure at 15 GPa. The ambient cubic (Fm (3) over barm) phase is found to be recoverable on releasing the pressure. The thermoelectric power is found to increase with pressure for the cubic phase. The XAFS studies performed at the Pb L-3-edge and Ag K-edge along with resistivity studies complement the XRD findings. C1 [Kumar, Ravhi S.; Jacobsen, Matthew; Cornelius, Andrew L.] Univ Nevada, Dept Phys & Astron, High Pressure Sci & Engn Ctr, Las Vegas, NV 89154 USA. [Balasubramanian, Mahalingam] Argonne Natl Lab, Adv Photon Source, PNC XOR, Argonne, IL 60439 USA. [Bommannavar, Arunkumar] IIPCAT, Argonne, IL 60439 USA. [Bommannavar, Arunkumar] Carnegie Inst Washington, Argonne, IL 60439 USA. [Kanatzidis, Mercouri] Northwestern Univ, Chicago, IL 60611 USA. [Yoneda, Seiji] Kanagawa Univ, Dept Elect & Informat Frontiers, Kanagawa 2218686, Japan. RP Kumar, RS (reprint author), Univ Nevada, Dept Phys & Astron, High Pressure Sci & Engn Ctr, Las Vegas, NV 89154 USA. EM ravhi@physics.unlv.edu RI Jacobsen, Matthew/C-8124-2009; Cornelius, Andrew/A-9837-2008; Kumar, Ravhi/B-8427-2012; OI Jacobsen, Matthew/0000-0002-0326-2562; Kumar, Ravhi/0000-0002-1967-1619 NR 24 TC 6 Z9 6 U1 0 U2 12 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD SEP PY 2010 VL 39 IS 9 BP 1828 EP 1831 DI 10.1007/s11664-010-1088-5 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA 644PW UT WOS:000281393000085 ER PT J AU Grote, K Anger, C Kelly, B Hubbard, S Rubin, Y AF Grote, Katherine Anger, Cale Kelly, Bridget Hubbard, Susan Rubin, Yoram TI Characterization of Soil Water Content Variability and Soil Texture using GPR Groundwave Techniques SO JOURNAL OF ENVIRONMENTAL AND ENGINEERING GEOPHYSICS LA English DT Article ID TIME-DOMAIN REFLECTOMETRY; PARALLEL COLUMNS MODEL; PENETRATING RADAR; MOISTURE VARIABILITY; SPATIAL VARIABILITY; UNSATURATED FLOW; PLANT-ROOTS; WAVE METHOD; FIELD; PATTERNS AB Accurate characterization of near-surface soil water content is vital for guiding agricultural management decisions and for reducing the potential negative environmental impacts of agriculture. Characterizing the near-surface soil water content can be difficult, as this parameter is often both spatially and temporally variable, and obtaining sufficient measurements to describe the heterogeneity can be prohibitively expensive. Understanding the spatial correlation of near-surface soil water content can help optimize data acquisition and improve understanding of the processes controlling soil water content at the field scale. In this study, ground penetrating radar (GPR) methods were used to characterize the spatial correlation of water content in a three acre field as a function of sampling depth, season, vegetation, and soil texture. GPR data were acquired with 450 MHz and 900 MHz antennas, and measurements of the GPR groundwave were used to estimate soil water content at four different times. Additional water content estimates were obtained using time domain reflectometry measurements, and soil texture measurements were also acquired. Variograms were calculated for each set of measurements, and comparison of these variograms showed that the horizontal spatial correlation was greater for deeper water content measurements than for shallower measurements. Precipitation and irrigation were both shown to increase the spatial variability of water content, while shallowly-rooted vegetation decreased the variability. Comparison of the variograms of water content and soil texture showed that soil texture generally had greater small-scale spatial correlation than water content, and that the variability of water content in deeper soil layers was more closely correlated to soil texture than were shallower water content measurements. Lastly, cross-variograms of soil texture and water content were calculated, and co-kriging of water content estimates and soil texture measurements showed that geophysically-derived estimates of soil water content could be used to improve spatial estimation of soil texture. C1 [Grote, Katherine] Univ Wisconsin, Dept Geol, Eau Claire, WI 54702 USA. [Anger, Cale] Univ Minnesota, Dept Geol & Geophys, Minneapolis, MN 55455 USA. [Kelly, Bridget] Univ Nebraska, Dept Geosci, Lincoln, NE 68588 USA. [Hubbard, Susan] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Geophys, Berkeley, CA 94720 USA. RP Grote, K (reprint author), Univ Wisconsin, Dept Geol, Eau Claire, WI 54702 USA. EM grotekr@uwec.edu; ange0075@umn.edu; bridget_kelly@gmail.com; sshubbard@lbl.gov; rubin@ce.berkeley.edu RI Hubbard, Susan/E-9508-2010 FU National Research Initiative of the USDA Cooperative State Research, Education and Extension Service [2006-35107-17245]; University of Wisconsin-Eau Claire FX This project was supported by the National Research Initiative of the USDA Cooperative State Research, Education and Extension Service, grant number 2006-35107-17245 and by the University of Wisconsin-Eau Claire. We sincerely thank Daniel Bosch and the Robert Mondavi Winery for providing vineyard technical information and vineyard access as well as in-kind support. We also thank the many researchers who participated in our field acquisition campaigns. NR 50 TC 22 Z9 24 U1 0 U2 17 PU ENVIRONMENTAL ENGINEERING GEOPHYSICAL SOC PI DENVER PA 1720 SOUTH BELLAIRE, STE 110, DENVER, CO 80222-433 USA SN 1083-1363 J9 J ENVIRON ENG GEOPH JI J. Environ. Eng. Geophys. PD SEP PY 2010 VL 15 IS 3 SI SI BP 93 EP 110 PG 18 WC Geochemistry & Geophysics; Engineering, Geological SC Geochemistry & Geophysics; Engineering GA 654HP UT WOS:000282159400002 ER PT J AU Mesyats, GA Shelkovenko, TA Ivanenkov, GV Agafonov, AV Savinov, SY Pikuz, SA Tilikin, IN Tkachenko, SI Chaikovskii, SA Ratakhin, NA Fedushchak, VF Oreshkin, VI Fedyunin, AV Russkikh, AG Labetskaya, NA Artemov, AP Hammer, DA Sinars, DB AF Mesyats, G. A. Shelkovenko, T. A. Ivanenkov, G. V. Agafonov, A. V. Savinov, S. Yu. Pikuz, S. A. Tilikin, I. N. Tkachenko, S. I. Chaikovskii, S. A. Ratakhin, N. A. Fedushchak, V. F. Oreshkin, V. I. Fedyunin, A. V. Russkikh, A. G. Labetskaya, N. A. Artemov, A. P. Hammer, D. A. Sinars, D. B. TI X-pinch source of subnanosecond soft X-ray pulses based on small-sized low-inductance current generator SO JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS LA English DT Article ID ARRAY Z-PINCHES; WIRE; DYNAMICS; CORE; PARAMETERS; EMISSION; CORONA AB For the first time, the regime of a micrometer-size hot spot formation is impemented for an X-pinch in a plasma, which is fed from a current generator based on low-inductance capacitors and rapid current switches. The configurations of X-pinches, which can be used effectively as point sources of soft X-rays with this type of current generator, are determined. A prototype of a small-size radiation source for high-resolution point projection X-ray radiography has been constructed. The main parameters of X-pinch as a radiation source are analyzed and compared with X-pinch parameters in high-voltage setups with shaping lines. An analysis of the data on the operation of X-pinches in generators with different parameters has led to simple relations that can be used to select optimal initial X-pinch parameters. C1 [Mesyats, G. A.; Shelkovenko, T. A.; Ivanenkov, G. V.; Agafonov, A. V.; Savinov, S. Yu.; Pikuz, S. A.] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia. [Tilikin, I. N.; Tkachenko, S. I.] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Oblast, Russia. [Chaikovskii, S. A.; Ratakhin, N. A.; Fedushchak, V. F.; Oreshkin, V. I.; Fedyunin, A. V.; Russkikh, A. G.; Labetskaya, N. A.; Artemov, A. P.] Russian Acad Sci, Inst High Current Elect, Siberian Branch, Tomsk 634055, Russia. [Hammer, D. A.] Cornell Univ, Ithaca, NY 14853 USA. [Sinars, D. B.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Mesyats, GA (reprint author), Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia. EM pikuz@mail.ru RI Tkachenko, Svetlana/L-2222-2013; Mesyats, Gennady/L-3138-2015; Savinov, Sergey/M-2983-2015; Ratakhin, Nikolai/M-5241-2015; Pikuz, Sergey/M-8231-2015; Shelkovenko, Tatiana/M-8254-2015; Tilikin, Ivan/E-9388-2014; Ivanenkov, Georgy/M-9592-2015; Agafonov, Alexey/E-3256-2014 OI Tkachenko, Svetlana/0000-0003-1480-9073; Savinov, Sergey/0000-0003-2105-6591; Ratakhin, Nikolai/0000-0002-3820-8777; FU Russian Foundation for Basic Research [09-08-00734-a, 08-02-00993, 09-02-00715]; Presidium of the Russian Academy of Sciences; Scientific and Educational Cadres of Innovative Russia [02.740.11.0447]; Development of Research Potential of Higher Education [2.1.1/5470]; NNSA DOE [DE-FC03-02NA00057] FX This study was supported financially by the Russian Foundation for Basic Research (project nos. 09-08-00734-a, 08-02-00993, and 09-02-00715), the program "Problems of Physical Electronics, Charged Particle Beams, and Generation of Electromagnetic Radiation in High-Power Systems" of the Presidium of the Russian Academy of Sciences, Federal targeted program "Scientific and Educational Cadres of Innovative Russia" (State contract no. 02.740.11.0447), program "Development of Research Potential of Higher Education") project no. 2.1.1/5470), and NNSA DOE (project DE-FC03-02NA00057). NR 33 TC 23 Z9 24 U1 0 U2 7 PU MAIK NAUKA/INTERPERIODICA/SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013-1578 USA SN 1063-7761 EI 1090-6509 J9 J EXP THEOR PHYS+ JI J. Exp. Theor. Phys. PD SEP PY 2010 VL 111 IS 3 BP 363 EP 370 DI 10.1134/S1063776110090049 PG 8 WC Physics, Multidisciplinary SC Physics GA 679DS UT WOS:000284140400004 ER PT J AU Banerjee, A Kraft, WN Andrews, MJ AF Banerjee, Arindam Kraft, Wayne N. Andrews, Malcolm J. TI Detailed measurements of a statistically steady Rayleigh-Taylor mixing layer from small to high Atwood numbers SO JOURNAL OF FLUID MECHANICS LA English DT Article DE instability; turbulent flows; turbulent mixing ID NUMERICAL-SIMULATION; REYNOLDS-NUMBER; TURBULENCE INTENSITY; INSTABILITY; DRIVEN; DENSITY; FLOWS; TRANSITION; VELOCITY; SHEAR AB The self-similar evolution to turbulence of a multi-mode miscible Rayleigh-Taylor (RT) mixing layer has been investigated for Atwood numbers 0.03-0.6, using an air-helium gas channel experiment. Two co-flowing gas streams, one containing air (on top) and the other a helium-air mixture (at the bottom), initially flowed parallel to each other at the same velocity separated by a thin splitter plate. The streams met at the end of the splitter plate, with the downstream formation of a buoyancy unstable interface, and thereafter buoyancy-driven mixing. This buoyancy-driven mixing layer experiment permitted long data collection times, short transients and was statistically steady. Several significant designs and operating characteristics of the gas channel experiment are described that enabled the facility to be successfully run for A(t) similar to 0.6. We report, and discuss, statistically converged measurements using digital image analysis and hot-wire anemometry. In particular, two hot-wire techniques were developed for measuring the various turbulence and mixing statistics in this air-helium RT experiment. Data collected and discussed include: mean density profiles, growth rate parameters, various turbulence and mixing statistics, and spectra of velocity, density and mass flux over a wide range of Atwood numbers (0.03 <= A(t) <= 0.6). In particular, the measured data at the small Atwood number (0.03-0.04) were used to evaluate several turbulence-model constants. Measurements of the root mean square (r.m.s.) velocity and density fluctuations at the mixing layer centreline for the large At case showed a strong similarity to lower At behaviours when properly normalized. A novel conditional averaging technique provided new statistics for RT mixing layers by separating the bubble (light fluid) and spike (heavy fluid) dynamics. The conditional sampling highlighted differences in the vertical turbulent mass flux, and vertical velocity fluctuations, for the bubbles and spikes, which were not otherwise observable. Larger values of the vertical turbulent mass flux and vertical velocity fluctuations were found in the downward-falling spikes, consistent with larger growth rates and momentum of spikes compared with the bubbles. C1 [Banerjee, Arindam] Missouri Univ Sci & Technol, Dept Mech & Aerosp Engn, Rolla, MO 65409 USA. [Kraft, Wayne N.; Andrews, Malcolm J.] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77840 USA. [Andrews, Malcolm J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Banerjee, A (reprint author), Missouri Univ Sci & Technol, Dept Mech & Aerosp Engn, Rolla, MO 65409 USA. EM banerjeea@mst.edu OI Banerjee, Arindam/0000-0002-1212-9704 FU US Department of Energy [DE-FG03-02NA00060] FX This paper is based upon the work that is supported by the US Department of Energy under contract number DE-FG03-02NA00060. The authors thank Nicholas Mueschke and Michael Peart for their help in the visualization analysis and construction of the facility. NR 95 TC 29 Z9 29 U1 0 U2 9 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0022-1120 EI 1469-7645 J9 J FLUID MECH JI J. Fluid Mech. PD SEP PY 2010 VL 659 BP 127 EP 190 DI 10.1017/S0022112010002351 PG 64 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 653SX UT WOS:000282118200007 ER PT J AU Gruber, A Sankaran, R Hawkes, ER Chen, JH AF Gruber, A. Sankaran, R. Hawkes, E. R. Chen, J. H. TI Turbulent flame-wall interaction: a direct numerical simulation study SO JOURNAL OF FLUID MECHANICS LA English DT Article ID CHANNEL FLOW; BOUNDARY-CONDITIONS; LARGE-SCALE; LARGE-EDDY; HEAT-FLUX; COMBUSTION; SURFACE; PROPAGATION; GENERATION; TRANSPORT AB A turbulent flame-wall interaction (FWI) configuration is studied using three-dimensional direct numerical simulation (DNS) and detailed chemical kinetics. The simulations are used to investigate the effects of the wall turbulent boundary layer (i) on the structure of a hydrogen-air premixed flame, (ii) on its near-wall propagation characteristics and (iii) on the spatial and temporal patterns of the convective wall heat flux. Results show that the local flame thickness and propagation speed vary between the core flow and the boundary layer, resulting in a regime change from flamelet near the channel centreline to a thickened flame at the wall. This finding has strong implications for the modelling of turbulent combustion using Reynolds-averaged Navier-Stokes or large-eddy simulation techniques. Moreover, the DNS results suggest that the near-wall coherent turbulent structures play an important role on the convective wall heat transfer by pushing the hot reactive zone towards the cold solid surface. At the wall, exothermic radical recombination reactions become important, and are responsible for approximately 70% of the overall heat release rate at the wall. Spectral analysis of the convective wall heat flux provides an unambiguous picture of its spatial and temporal patterns, previously unobserved, that is directly related to the spatial and temporal characteristic scalings of the coherent near-wall turbulent structures. C1 [Gruber, A.] SINTEF Energy Res, N-7465 Trondheim, Norway. [Sankaran, R.] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. [Hawkes, E. R.] Univ New S Wales, Sch Photovolta & Renewable Energy Engn, Sch Mech & Mfg Engn, Sydney, NSW 2052, Australia. [Chen, J. H.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. RP Gruber, A (reprint author), SINTEF Energy Res, N-7465 Trondheim, Norway. EM andrea.gruber@sintef.no RI Sankaran, Ramanan/D-9254-2015; Hawkes, Evatt/C-5307-2012 OI Sankaran, Ramanan/0000-0002-5352-9915; Hawkes, Evatt/0000-0003-0539-7951 FU Norwegian Research Council; Division of Chemical Sciences, Geosciences and Biosciences, the Office of Basic Energy Sciences (BES), the US Department of Energy (DOE); US DOE, BES, SciDAC Computational Chemistry; Office of Science of the US DOE [DE-AC05-00OR22725]; NCCS/ORNL FX The work at SINTEF was supported by the Norwegian Research Council. The work at SNL was supported by the Division of Chemical Sciences, Geosciences and Biosciences, the Office of Basic Energy Sciences (BES), the US Department of Energy (DOE) and also by the US DOE, BES, SciDAC Computational Chemistry programme. This research used resources of the National Center for Computational Sciences (NCCS) at Oak Ridge National Laboratory (ORNL), which is supported by the Office of Science of the US DOE under Contract No. DE-AC05-00OR22725. We also acknowledge the computing support provided by Mark R. Fahey of NCCS/ORNL. NR 57 TC 53 Z9 54 U1 2 U2 25 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD SEP PY 2010 VL 658 BP 5 EP 32 DI 10.1017/S0022112010001278 PG 28 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 653SW UT WOS:000282118000002 ER PT J AU Nolan, KP Walsh, EJ McEligot, DM AF Nolan, K. P. Walsh, E. J. McEligot, D. M. TI Quadrant analysis of a transitional boundary layer subject to free-stream turbulence SO JOURNAL OF FLUID MECHANICS LA English DT Article DE boundary-layer transition; instability; streaks; turbulent spots ID BYPASS TRANSITION; FREESTREAM TURBULENCE; SPOTS; GENERATION; REGION; FLUX AB This paper presents analyses of particle image velocimetry measurements from a boundary layer on a flat plate subject to grid-generated free-stream turbulence. The pre-transition region and early stages of breakdown to turbulent spots are explored by means of quadrant analysis and quadrant hole analysis. By isolating the contributors to the Reynolds shear stresses, it is possible to identify coherent structures within the flow that are responsible for the production of TKE. It is found that so called 'ejection' events are the most significant form of disturbance, exhibiting the largest amplitude behaviour with increased negative spanwise vorticity. Sweep events become increasingly large close to the wall with increased Reynolds number and intermittency. C1 [Nolan, K. P.; Walsh, E. J.] Univ Limerick, Stokes Inst, Dept Mech & Aeronaut Engn, Limerick, Ireland. [McEligot, D. M.] Idaho Natl Lab INL, Idaho Falls, ID 83415 USA. [McEligot, D. M.] Univ Arizona, Dept Aerosp & Mech Engn, Tucson, AZ 85721 USA. RP Nolan, KP (reprint author), Univ Limerick, Stokes Inst, Dept Mech & Aeronaut Engn, Limerick, Ireland. EM kevin.nolan@ul.ie RI Analysis, Some/A-5852-2012 NR 28 TC 27 Z9 27 U1 2 U2 9 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD SEP PY 2010 VL 658 BP 310 EP 335 DI 10.1017/S0022112010001758 PG 26 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 653SW UT WOS:000282118000015 ER PT J AU Feng, ZG Michaelides, EE Mao, SL AF Feng, Zhi-Gang Michaelides, Efstathios E. Mao, Shaolin TI A Three-Dimensional Resolved Discrete Particle Method for Studying Particle-Wall Collision in a Viscous Fluid SO JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME LA English DT Article ID DIRECT NUMERICAL-SIMULATION; IMMERSED BOUNDARY METHOD; PARTICULATE FLOWS; BOLTZMANN-EQUATION; BED; SUSPENSIONS; MODEL AB Particle collisions with the walls are very important in understanding the fluid-particle behavior near the walls and determining the boundary conditions of the particulate phases in two-fluid models. In this paper, we examine the velocity characteristics of several types of particles near solid walls by applying a resolved discrete particle method (RDPM), which also uses the immersed boundary approach to model the solid particles. We assume that the particles are spherical with an initial velocity that is prescribed. The particles are allowed to traverse part of the viscous fluid until they collide with the solid wall. The collision force on the particle is modeled by a soft-sphere collision scheme with a linear spring-dashpot system. The hydrodynamic force on the particle is solved directly from the RDPM. By following the trajectories of several particles, we investigate the effect of the collision model parameters to the dynamics of particle close to the wall. We report here the rebound velocity of the particle, the coefficient of restitution, and the particle slip velocity at the wall as functions of the collision parameters. [DOI: 10.1115/1.4002432] C1 [Feng, Zhi-Gang; Michaelides, Efstathios E.] Univ Texas San Antonio, Dept Mech Engn, San Antonio, TX 78249 USA. [Mao, Shaolin] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Feng, ZG (reprint author), Univ Texas San Antonio, Dept Mech Engn, 1 UTSA Circle, San Antonio, TX 78249 USA. EM zhigang.feng@utsa.edu FU DOE [DE-NT0008064]; NSF [HRD-0932339] FX This work was partly supported by a grant from the DOE under Contract No. DE-NT0008064 to UTSA, Mr. Steven Steachman is the program manager. The work of the second author (E.E.M.) has also been supported by a grant from the NSF (Contract No. HRD-0932339) with Drs. Demetris Kazakos and Richard Smith as project managers. NR 28 TC 6 Z9 6 U1 2 U2 10 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA SN 0098-2202 J9 J FLUID ENG-T ASME JI J. Fluids Eng.-Trans. ASME PD SEP PY 2010 VL 132 IS 9 AR 091302 DI 10.1115/1.4002432 PG 7 WC Engineering, Mechanical SC Engineering GA 653VK UT WOS:000282125600007 ER PT J AU Verba, CA Geissler, PE Titus, TN Waller, D AF Verba, Circe A. Geissler, Paul E. Titus, Timothy N. Waller, Devin TI Observations from the High Resolution Imaging Science Experiment (HiRISE): Martian dust devils in Gusev and Russell craters SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article ID MARS; CAMERA AB Two areas targeted for repeated imaging by detailed High Resolution Imaging Science Experiment (HiRISE) observations allow us to examine morphological differences and monitor seasonal variations of Martian dust devil tracks at two quite different locations. Russell crater (53.3 degrees S, 12.9 degrees E) is regularly imaged to study seasonal processes including deposition and sublimation of CO2 frost. Gusev crater (14.6 degrees S, 175.4 degrees E) has been frequently imaged in support of the Mars Exploration Rover mission. Gusev crater provides the first opportunity to compare "ground truth" orbital observations of dust devil tracks to surface observations of active dust plumes. Orbital observations show that dust devil tracks are rare, forming at a rate <1/110 that of the occurrence of active dust plumes estimated from Spirit's surface observations. Furthermore, the tracks observed from orbit are wider than typical plume diameters observed by Spirit. We conclude that the tracks in Gusev are primarily formed by rare, large dust devils. Smaller dust devils fail to leave tracks that are visible from orbit, perhaps because of limited surface excavation depths. Russell crater displays more frequent, smaller sinuous tracks than Gusev. This may be due to the thin dust cover in Russell, allowing smaller dust devils to penetrate through the bright dust layer and leave conspicuous tracks. The start of the dust devil season and peak activity are delayed in Russell in comparison to Gusev, likely because of its more southerly location. Dust devils in both sites travel in directions consistent with general circulation model (GCM)-predicted winds, confirming a laboratory-derived approach to determining dust devil travel directions based on track morphology. C1 [Verba, Circe A.; Geissler, Paul E.; Titus, Timothy N.] US Geol Survey, Flagstaff, AZ 86001 USA. [Verba, Circe A.] US DOE, NETL, Albany, OR 97322 USA. [Waller, Devin] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA. RP Verba, CA (reprint author), US Geol Survey, 2255 N Gemini Dr, Flagstaff, AZ 86001 USA. EM circe.verba@gmail.com NR 33 TC 12 Z9 12 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9097 EI 2169-9100 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD SEP 1 PY 2010 VL 115 AR E09002 DI 10.1029/2009JE003498 PG 11 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 647QD UT WOS:000281632800002 ER PT J AU Aad, G Abat, E Abbott, B Abdallah, J Abdelalim, AA Abdesselam, A Abdinov, O Abi, B Abolins, M Abramowicz, H Abreu, H Acerbi, E Acharya, BS Ackers, M Adams, DL Addy, TN Adelman, J Aderholz, M Adomeit, S Adorisio, C Adragna, P Adye, T Aefsky, S Aguilar-Saavedra, JA Aharrouche, M Ahlen, SP Ahles, F Ahmad, A Ahmed, H Ahsan, M Aielli, G Akdogan, T Akesson, PF Akesson, TPA Akimoto, G Akimov, AV Aktas, A Alam, MS Alam, MA Albrand, S Aleksa, M Aleksandrov, IN Aleppo, M Alessandria, F Alexa, C Alexander, G Alexandre, G Alexopoulos, T Alhroob, M Aliev, M Alimonti, G Alison, J Aliyev, M Allport, PP Allwood-Spiers, SE Almond, J Aloisio, A Alon, R Alonso, A Alonso, J Alviggi, MG Amako, K Amaral, P Ambrosini, G Ambrosio, G Amelung, C Ammosov, VV Ammosov, VV Amorim, A Amoros, G Amram, N Anastopoulos, C Andeen, T Anders, CF Anderson, KJ Andreazza, A Andrei, V Andrieux, ML Anduaga, XS Angerami, A Anghinolfi, F Anjos, N Annovi, A Antonaki, A Antonelli, M Antonelli, S Antos, J Antunovic, B Anulli, F Aoun, S Arabidze, G Aracena, I Arai, Y Arce, ATH Archambault, JP Arfaoui, S Arguin, JF Argyropoulos, T Arik, E Arik, M Armbruster, AJ Arms, KE Armstrong, SR Arnaez, O Arnault, C Artamonov, A Arutinov, D Asai, M Asai, S Asfandiyarov, R Ask, S Asman, B Asner, D Asquith, L Assamagan, K Astbury, A Astvatsatourov, A Atoian, G Aubert, B Auerbach, B Auge, E Augsten, K Aurousseau, M Austin, N Avolio, G Avramidou, R Axen, D Ay, C Azuelos, G Azuma, Y Baak, MA Baccaglioni, G Bacci, C Bach, AM Bachacou, H Bachas, K Bachy, G Backes, M Badescu, E Bagnaia, P Bai, Y Bailey, DC Bain, T Baines, JT Baker, OK Baker, MD Baker, S Pedrosa, FBD Banas, E Banerjee, P Banerjee, S Banfi, D Bangert, A Bansal, V Baranov, SP Baranov, S Barashkou, A Barber, T Barberio, EL Barberis, D Barbero, M Bardin, DY Barillari, T Barisonzi, M Barklow, T Barlow, N Barnett, BM Barnett, RM Baroncelli, A Barone, M Barr, AJ Barreiro, F da Costa, JBG Barrillon, P Bartoldus, R Bartsch, D Bates, RL Batkova, L Batley, JR Battaglia, A Battistin, M Battistoni, G Bauer, F Bawa, HS Bazalova, M Beare, B Beau, T Beauchemin, PH Beccherle, R Becerici, N Bechtle, P Beck, GA Beck, HP Beckingham, M Becks, KH Beddall, AJ Beddall, A Bednyakov, VA Bee, C Begel, M Harpaz, SB Behera, PK Beimforde, M Belanger, GAN Belanger-Champagne, C Belhorma, B Bell, PJ Bell, WH Bella, G Bellagamba, L Bellina, F Bellomo, G Bellomo, M Belloni, A Belotskiy, K Beltramello, O Belymam, A Ben Ami, S Benary, O Benchekroun, D Benchouk, C Bendel, M Benedict, BH Benekos, N Benhammou, Y Benincasa, GP Benjamin, DP Benoit, M Bensinger, JR Benslama, K Bentvelsen, S Beretta, M Berge, D Kuutmann, EB Berger, N Berghaus, F Berglund, E Beringer, J Bernardet, K Bernat, P Bernhard, R Bernius, C Berry, T Bertin, A Bertinelli, F Bertolucci, S Besana, MI Besson, N Bethke, S Bianchi, RM Bianco, M Biebel, O Bieri, M Biesiada, J Biglietti, M Bilokon, H Binder, M Bindi, M Binet, S Bingul, A Bini, C Biscarat, C Bischof, R Bitenc, U Black, KM Blair, RE Blanch, O Blanchard, JB Blanchot, G Blocker, C Blocki, J Blondel, A Blum, W Blumenschein, U Boaretto, C Bobbink, GJ Bocci, A Bocian, D Bock, R Boehler, M Boek, J Boelaert, N Boser, S Bogaerts, JA Bogouch, A Bohm, C Bohm, J Boisvert, V Bold, T Boldea, V Bondarenko, VG Bondioli, M Bonino, R Boonekamp, M Boorman, G Boosten, M Booth, CN Booth, PSL Booth, P Booth, JRA Bordoni, S Borer, C Borer, K Borisov, A Borissov, G Borjanovic, I Borroni, S Bos, K Boscherini, D Bosman, M Boterenbrood, H Botterill, D Bouchami, J Boudreau, J Bouhova-Thacker, EV Boulahouache, C Bourdarios, C Boveia, A Boyd, J Boyko, IR Bozhko, NI Bozovic-Jelisavcic, I Braccini, S Bracinik, J Braem, A Brambilla, E Branchini, P Brandenburg, GW Brandt, A Brandt, G Brandt, O Bratzler, U Brau, B Brau, JE Braun, HM Bravo, S Brelier, B Bremer, J Brenner, R Bressler, S Breton, D Brett, ND Bright-Thomas, PG Britton, D Brochu, FM Brock, I Brock, R Brodbeck, TJ Brodet, E Broggi, F Bromberg, C Brooijmans, G Brooks, WK Brown, G Brubaker, E de Renstrom, PAB Bruncko, D Bruneliere, R Brunet, S Bruni, A Bruni, G Bruschi, M Buanes, T Bucci, F Buchanan, J Buchanan, NJ Buchholz, P Buckley, AG Budagov, IA Budick, B Buscher, V Bugge, L Buira-Clark, D Buis, EJ Bujor, F Bulekov, O Bunse, M Buran, T Burckhart, H Burdin, S Burgess, T Burke, S Busato, E Bussey, P Buszello, CP Butin, F Butler, B Butler, JM Buttar, CM Butterworth, JM Byatt, T Caballero, J Urban, SC Caccia, M Caforio, D Cakir, O Calafiura, P Calderini, G Calfayan, P Calkins, R Caloba, LP Caloi, R Calvet, D Calvet, S Camard, A Camarri, P Cambiaghi, M Cameron, D Cammin, J Campana, S Campanelli, M Canale, V Canelli, F Canepa, A Cantero, J Capasso, L Garrido, MDMC Caprini, I Caprini, M Caprio, M Capua, M Caputo, R Caramarcu, C Cardarelli, R Sas, LC Carli, T Carlino, G Carminati, L Caron, B Caron, S Carpentieri, C Montoya, GDC Montero, SC Carter, AA Carter, JR Carvalho, J Casadei, D Casado, MP Cascella, M Caso, C Hernandez, AMC Castaneda-Miranda, E Gimenez, VC Castro, NF Cataldi, G Cataneo, F Catinaccio, A Catmore, JR Cattai, A Cattani, G Caughron, S Cauz, D Cavallari, A Cavalleri, P Cavalli, D Cavalli-Sforza, M Cavasinni, V Cazzato, A Ceradini, F Cerna, C Cerqueira, AS Cerri, A Cerrito, L Cerutti, F Cervetto, M Cetin, SA Cevenini, F Chafaq, A Chakraborty, D Chan, K Chapman, JD Chapman, JW Chareyre, E Charlton, DG Charron, S Chatterjii, S Chavda, V Cheatham, S Chekanov, S Chekulaev, SV Chelkov, GA Chen, H Chen, L Chen, S Chen, T Chen, X Cheng, S Cheplakov, A Chepurnov, VF El Moursli, RC Tcherniatine, V Chesneanu, D Cheu, E Cheung, SL Chevalier, L Chevallier, F Chiarella, V Chiefari, G Chikovani, L Childers, JT Chilingarov, A Chiodini, G Chizhov, V Choudalakis, G Chouridou, S Christidi, IA Christov, A Chromek-Burckhart, D Chu, ML Chudoba, J Ciapetti, G Cicalini, E Ciftci, AK Ciftci, R Cinca, D 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Zemla, A. Zendler, C. Zenin, A. V. Zenin, O. Zenis, T. Zenonos, Z. Zenz, S. Zerwas, D. della Porta, G. Zevi Zhan, Z. Zhang, H. Zhang, J. Zhang, Q. Zhang, X. Zhao, L. Zhao, T. Zhao, Z. Zhemchugov, A. Zheng, S. Zhong, J. Zhou, B. Zhou, N. Zhou, Y. Zhu, C. G. Zhu, H. Zhu, Y. Zhuang, X. Zhuravlov, V. Zilka, B. Zimmermann, R. Zimmermann, S. Zimmermann, S. Ziolkowski, M. Zitoun, R. Zivkovic, L. Zmouchko, V. V. Zobernig, G. Zoccoli, A. Zolnierowski, Y. Zsenei, A. zur Nedden, M. Zutshi, V. CA ATLAS Collaboration TI Performance of the ATLAS detector using first collision data SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE Hadron-Hadron Scattering AB More than half a million minimum-bias events of LHC collision data were collected by the ATLAS experiment in December 2009 at centre-of-mass energies of 0.9 TeV and 2.36 TeV. This paper reports on studies of the initial performance of the ATLAS detector from these data. 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[Ay, C.; Blumenschein, U.; Brandt, O.; Erdmann, J.; Fayette, F.; Grosse-Knetter, J.; Henrichs, A.; Hensel, C.; Keil, M.; Kohn, F.; Krieger, N.; Kroeninger, K.; Mann, A.; Meyer, J.; Morel, J.; Park, S. J.; Quadt, A.; Shabalina, E.; Uhrmacher, M.; Weber, P.; Weingarten, J.] Univ Gottingen, Inst Phys 2, D-37077 Gottingen, Germany. [Albrand, S.; Andrieux, M-L.; Belhorma, B.; Clement, B.; Collot, J.; Crepe-Renaudin, S.; De Saintignon, P.; Delsart, P. A.; Donini, J.; Dzahini, D.; Hostachy, J-Y.; Ledroit-Guillon, F.; Lleres, A.; Lucotte, A.; Malek, F.; Martin, Ph.; Polci, F.; Stark, J.; Trocme, B.; Wang, J.] Univ Grenoble 1, Lab Phys Subatom & Cosmol, CNRS IN2P3, INPG, FR-38026 Grenoble, France. [Addy, T. N.; Harvey, A.; McFarlane, K. W.; Shin, T.; Vassilakopoulos, V. I.] Hampton Univ, Dept Phys, Hampton, VA 23668 USA. [Guimaraes da Costa, J. Barreiro; Belloni, A.; Black, K. M.; Brandenburg, G. W.; Franklin, M.; Hurst, P.; Huth, J.; Jeanty, L.; Kagan, M.; Kashif, L.; Outschoorn, V. 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[Hayakawa, T.; Homma, Y.; Hori, T.; Ichimiya, R.; Ishikawa, A.; Kawagoe, K.; King, M.; Kiyamura, H.; Kurashige, H.; Matsushita, T.; Miyazaki, K.; Nakatsuka, H.; Nishiyama, T.; Ochi, A.; Okada, S.; Omachi, C.; Suita, K.; Takeda, H.; Tani, K.; Tokunaga, K.; Yamazaki, Y.] Kobe Univ, Grad Sch Sci, Nada Ku, Jp Kobe 6578501, Japan. [Barashkou, A.; Sasao, N.] Kyoto Univ, Fac Sci, Sakyou Ku, Kyoto, JP Kyoto 6068502, Japan. [Takashima, R.] Kyoto Univ, Fushimi Ku, Kyoto, JP Kyoto 6128522, Japan. [Anduaga, X. S.; Dova, M. T.; Monticelli, F.; Tripiana, M. F.] Natl Univ La Plata, FCE, Dept Fis, IFLP,CONICET UNLP, RA-1900 La Plata, Buenos Aires, Argentina. [Borissov, G.; Bouhova-Thacker, E. V.; Brodbeck, T. J.; Catmore, J. R.; Cheatham, S.; Chilingarov, A.; Davidson, R.; De Mora, L.; Fox, H.; Henderson, R. C. W.; Hughes, G.; Jones, R. W. L.; Kartvelishvili, V.; Long, R. E.; Love, P. A.; Ratoff, P. N.; Sloan, T. 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[Cindro, V.; Dolenc, I.; Filipcic, A.; Gorisek, A.; Kersevan, B. P.; Kramberger, G.; Macek, B.; Mandic, I.; Mijovic, L.; Mikuz, M.] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia. [Cindro, V.; Dolenc, I.; Filipcic, A.; Gorisek, A.; Kersevan, B. P.; Kramberger, G.; Macek, B.; Mandic, I.; Mijovic, L.; Mikuz, M.] Univ Ljubljana, Dept Phys, SI-1000 Ljubljana, Slovenia. [Adragna, P.; Beck, G. A.; Belymam, A.; Carter, A. A.; Cerrito, L.; Cooper, B. D.; Dalmau, J.; Eisenhandler, E.; Ellis, K.; Gnanvo, K. G.; Landon, M. P. J.; Lloyd, S. L.; Martin, A. J.; Morin, J.; Morris, J. D.; Piccaro, E.; Poll, J.; Rizvi, E.; Stevenson, K.; Castanheira, M. Teixeira Dias] Queen Mary Univ London, Dept Phys, London E1 4NS, England. [Alam, M. A.; Berry, T.; Boisvert, V.; Boorman, G.; Cooper-Smith, N. J.; Cowan, G.; Edwards, C. A.; Martin, T. Fonseca; George, S.; Goncalo, R.; Green, B.; Hollyman, G.; Kilvington, G.; McGarvie, S.; McMahon, T. R.; Misiejuk, A.; Strong, J. A.; Tamsett, M. 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A.; Alonso, A.; Boelaert, N.; Groth-Jensen, J.; Hedberg, V.; Jarlskog, G.; Ji, W.; Korsmo, H.; Lundberg, B.; Lytken, E.; Mjornmark, J. U.; Smirnova, O.] Lund Univ, Naturvetenskapliga Fak, Fysiska Inst, SE-22100 Lund, Sweden. [Barreiro, F.; Cantero, J.; Del Peso, J.; Gabaldon, C.; Glasman, C.; Labarga, L.; Lagouri, T.; March, L.; Nebot, E.; Oliver, C.; Peez, M.; Rodier, S.; Terron, J.] Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor, ES-28049 Madrid, Spain. [Aharrouche, M.; Bendel, M.; Blum, W.; Buescher, V.; Calvet, S.; Eckweiler, S.; Edmonds, K.; Ellinghaus, F.; Ertel, E.; Fiedler, F.; Fleckner, J.; Goeringer, C.; Groll, M.; Handel, C.; Hohlfeld, M.; Kawamura, G.; Kleinknecht, K.; Koenig, S.; Koepke, L.; Masetti, L.; Moreno, D.; Neusiedl, A.; Rieke, S.; Sander, H. G.; Schaefer, U.; Schmitt, C.; Schroeder, C.; Siragusa, G.; Tapprogge, S.; Anh, T. Vu; Weber, G.; Wicke, D.] Johannes Gutenberg Univ Mainz, Inst Phys, DE-55099 Mainz, Germany. [Ask, S.; Brown, G.; Chavda, V.; Cox, B. E.; Da Via, C.; Duerdoth, I. P.; Forti, A.; Foster, J. M.; Freestone, J.; Head, S. J.; Hughes-Jones, R. E.; Ibbotson, M.; Jones, G.; Keates, J. R.; Kelly, M.; Kolya, S. D.; Lane, J. L.; Loebinger, F. K.; Marshall, R.; Martyniuk, A. C.; Masik, J.; Miyagawa, P. S.; Nasteva, I.; Nauyock, F.; Oh, A.; Owen, M.; Pater, J. R.; Pilkington, A. D.; Plano, W. G.; Potter, K. P.; Schwanenberger, C.; Snow, W.; Tevlin, C. M.; Thompson, R. J.; Watts, S.; Wengler, T.; Yang, U. K.] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England. [Aoun, S.; Bee, C.; Benchouk, C.; Bernardet, K.; Cerna, C.; Clemens, J. C.; Coadou, Y.; Correard, S.; Delpierre, P.; Djama, F.; Etienne, F.; Feligioni, L.; Hallewell, G. 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[Armbruster, A. J.; Chapman, J. W.; Cirilli, M.; Dai, T.; De La Cruz-Burelo, E.; Diehl, E. B.; Eppig, A.; Ferretti, C.; Goldfarb, S.; Levin, D.; Li, X.; Liu, H.; Liu, J. B.; Mc Kee, S. P.; Neal, H. A.; Panikashvili, N.; Purdham, J.; Qian, J.; Scheirich, D.; Strandberg, J.; Thun, R. P.; Wilson, A.; Yang, H.; Zhou, B.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. [Abolins, M.; Brock, R.; Bromberg, C.; Comune, G.; Di Mattia, A.; Ermoline, I.; Gonzalez-Pineiro, B.; Hauser, R.; Heim, S.; Holzbauer, J. L.; Huston, J.; Koll, J.; Kraus, J.; Linnemann, J. T.; Mangeard, P. S.; Martin, B.; Miller, R. J.; Pope, B. G.; Richards, R. A.; Ryan, P.; Schwienhorst, R.; Tollefson, K.] Michigan State Univ, Dept Phys & Astron, High Energy Phys Grp, E Lansing, MI 48824 USA. [Acerbi, E.; Aleppo, M.; Alessandria, F.; Alimonti, G.; Ambrosio, G.; Andreazza, A.; Baccaglioni, G.; Banfi, D.; Battistoni, G.; Bellomo, G.; Besana, M. 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E.; Kluth, S.; Kortner, O.; Kotov, S.; Kroha, H.; Lutz, G.; Macchiolo, A.; Manz, A.; Menke, S.; Mohrdieck-Moeck, S.; Moser, H. G.; Nisius, R.; Oberlack, H.; Gomez, M. Olivo; Pataraia, S.; Pospelov, G. E.; Potrap, I. N.; Rauter, E.; Richter, R.; Salihagic, D.; Schacht, P.; Schieck, J.; Seuster, R.; Stiller, W.; Stonjek, S.; Valderanis, C.; von der Schmitt, H.; von Loeben, J.; Wiesmann, M.; Yuan, J.; Zhuravlov, V.] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany. [Shimojima, M.; Tanaka, Y.] Nagasaki Inst Appl Sci, Jp Nagasaki 8510193, Japan. [Hasegawa, S.; Itoh, Y.; Ohshima, T.; Okumura, Y.; Sugimoto, T.; Takahashi, Y.; Tomoto, M.] Nagoya Univ, Grad Sch Sci, Furo, Nagoya 4648602, Japan. [Aloisio, A.; Alviggi, M. G.; Canale, V.; Capasso, L.; Caprio, M.; Carlino, G.; Cevenini, F.; Chiefari, G.; Conventi, F.; de Asmundis, R.; Della Pietra, M.; della Volpe, D.; Doria, A.; Giordano, R.; Iacobucci, G.; Izzo, V.; Merola, L.; Migliaccio, A.; Musto, E.; Patricelli, S.; Sekhniaidze, G.] INFN, Sez Napoli, IT-80126 Naples, Italy. [Aloisio, A.; Alviggi, M. G.; Canale, V.; Capasso, L.; Caprio, M.; Cevenini, F.; Chiefari, G.; della Volpe, D.; Giordano, R.; Merola, L.; Migliaccio, A.; Musto, E.; Patricelli, S.] Univ Napoli, Dipartimento Sci Fis, IT-80126 Naples, Italy. [Gorelov, I.; Hoeferkamp, M. R.; Metcalfe, J.; Seidel, S. C.; Toms, K.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA. [Consonni, M.; De Groot, N.; Filthaut, F.; Klok, P. F.; Konig, A. C.; Koetsveld, F.; Magrath, C. A.; Ordonez, G.; Raas, M.; Timmermans, C. J. W. P.] Radboud Univ Nijmegen, NIKHEF, Dept Expt High Energy Phys, NL-6525 AJ Nijmegen, Netherlands. [Bentvelsen, S.; Bobbink, G. J.; Bos, K.; Boterenbrood, H.; Buis, E. J.; Colijn, A. P.; Dankers, R.; Daum, C.; de Jong, P.; Doxiadis, A.; Ferrari, P.; Garitaonandia, H.; Gosselink, M.; Hartjes, F.; Hendriks, P. J.; Hessey, N. P.; Igonkina, O.; Kayl, M. S.; Klous, S.; Kluit, P.; Koffeman, E.; Koutsman, A.; Lee, H.; Liebig, W.; Linde, F.; Luijckx, G.; Massaro, G.; Mechnich, J.; Muijs, A.; Mussche, I.; Nemethy, P.; Ottersbach, J. P.; Peeters, S. J. M.; Peters, O.; Reichold, A.; Rijpstra, M.; Ruckstuhl, N.; Salamanna, G.; Sandstroem, R.; Scholte, R. C.; Snuverink, J.; Tsiakiris, M.; Turlay, E.; van der Graaf, H.; van der Kraaij, E.; van der Poel, E.; van Eijk, B.; van Kesteren, Z.; van Vulpen, I.; Verkerke, W.; Vermeulen, J. C.; Vreeswijk, M.] Nikhef Natl Inst Subatom Phys, NL-1098 XG Amsterdam, Netherlands. [Bentvelsen, S.; Bobbink, G. J.; Bos, K.; Boterenbrood, H.; Buis, E. J.; Colijn, A. P.; Dankers, R.; Daum, C.; de Jong, P.; Doxiadis, A.; Ferrari, P.; Garitaonandia, H.; Gosselink, M.; Hartjes, F.; Hendriks, P. J.; Hessey, N. P.; Igonkina, O.; Kayl, M. S.; Klous, S.; Kluit, P.; Koffeman, E.; Koutsman, A.; Lee, H.; Liebig, W.; Linde, F.; Luijckx, G.; Massaro, G.; Mechnich, J.; Muijs, A.; Mussche, I.; Nemethy, P.; Ottersbach, J. P.; Peeters, S. J. M.; Peters, O.; Reichold, A.; Rijpstra, M.; Ruckstuhl, N.; Salamanna, G.; Sandstroem, R.; Scholte, R. C.; Snuverink, J.; Tsiakiris, M.; Turlay, E.; van der Graaf, H.; van der Kraaij, E.; van der Poel, E.; van Eijk, B.; van Kesteren, Z.; van Vulpen, I.; Verkerke, W.; Vermeulen, J. C.; Vreeswijk, M.] Univ Amsterdam, NL-1098 XG Amsterdam, Netherlands. [Kazanin, V. A.; Kolachev, G. M.; Kotov, K. Y.; Malyshev, V.; Maslennikov, A. L.; Orlov, I.; Panin, V. N.; Peleganchuk, S. V.; Schamov, A. G.; Skovpen, K.; Soukharev, A.; Talyshev, A.; Tikhonov, Y. A.; Zaytsev, A.] Budker Inst Nucl Phys BINP, RU-630090 Novosibirsk, Russia. [Budick, B.; Casadei, D.; Cranmer, K.; Djilkibaev, R.; Konoplich, R.; Krasznahorkay, A.; Mincer, A. I.; Neves, R. M.; Shibata, A.; Zhao, L.] NYU, Dept Phys, New York, NY 10003 USA. [Arms, K. E.; Fernando, W.; Fisher, M. J.; Gan, K. K.; Kagan, H.; Kass, R. D.; Loureiro, K. F.; Moss, J.; Rahimi, A. M.; Strang, M.] Ohio State Univ, Columbus, OH 43210 USA. [Mima, S.; Naito, D.; Nakano, I.] Okayama Univ, Fac Sci, Okayama 7008530, Japan. [Abbott, B.; Gutierrez, P.; Huang, G. S.; Jana, D. K.; Meera-Lebbai, R.; Saleem, M. S.; Severini, H.; Skubic, P.; Snow, J.; Strauss, M.] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA. [Abi, B.; Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA. [Kocnar, A.] Palacky Univ, Olomouc 77207, Czech Republic. [Brau, J. E.; Ptacek, E.; Reinsch, A.; Robinson, M.; Searcy, J.; Shamim, M.; Sinev, N. B.; Strom, D. M.; Torrence, E.] Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA. [Abreu, H.; Arnault, C.; Auge, E.; Barrillon, P.; Benoit, M.; Bernat, P.; Binet, S.; Blanchard, J-B; Bourdarios, C.; Breton, D.; Collard, C.; De La Taille, C.; De Regie, J. B. De Vivie; Diglio, S.; Dudziak, F.; Duflot, L.; Escalier, M.; Falou, A. C.; Fayard, L.; Fournier, D.; Heller, M.; Henrot-Versille, S.; Hrivnac, J.; Iconomidou-Fayard, L.; Kado, M.; Lechowski, M.; Lounis, A.; Makovec, N.; Matricon, P.; Niedercorn, F.; Perus, P.; Poggioli, L.; Puzo, P.; Rousseau, D.; Ruan, X.; Rybkin, G.; Schaffer, A. C.; Serin, L.; Simion, S.; Tanaka, R.; Veillet, J. J.; Vukotic, I.; Wicek, F.; Zerwas, D.] Univ Paris 11, CNRS, LAL, IN2P3, F-91405 Orsay, France. [Hanagaki, K.; Jimenez, Y. Hernandez; Hirose, M.; Meguro, T. M.; Nomachi, M.; Sugaya, Y.; Uchida, K.] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 5600043, Japan. [Bugge, L.; Buran, T.; Cameron, D.; Gjelsten, B. K.; Lund, E.; Ould-Saada, F.; Pajchel, K.; Pylypchenko, Y.; Read, A. L.; Rohne, O.; Samset, B. H.; Stapnes, S.; Strandlie, A.; Taga, A.] Univ Oslo, Dept Phys, NO-0316 Oslo 3, Norway. [Abdesselam, A.; Barr, A. J.; Beauchemin, P. H.; Brett, N. D.; Buchanan, J.; Buira-Clark, D.; Coe, P.; Cooper-Sarkar, A. M.; Dehchar, M.; Dennis, C.; Doglioni, C.; Farrington, S. M.; Ferrando, J.; Fiascaris, M.; Fopma, J.; Gallas, E. J.; Gibson, S. M.; Gilbert, L. M.; Grewal, A.; Gwenlan, C.; Hawes, B. M.; Heinemann, F. E. W.; Hindson, D.; Holmes, A.; Howell, D. F.; Huffman, T. B.; Issever, C.; Jones, M.; Karagoz Unel, M.; Kirsch, G. P.; Kundu, N.; Larner, A.; Lau, W.; Lavorato, A.; Loken, J.; Lynn, J.; Mattravers, C.; Mermod, P.; Mitra, A.; Nickerson, R. B.; Ottewell, B.; Shield, P.; Tseng, J. C-L.; Vertogardov, L.; Vickey, T.; Viehhauser, G. H. A.; Wastie, R.; Weidberg, A. R.; Whitehead, S. R.; Yang, S.] Univ Oxford, Dept Phys, Oxford OX1 3RH, England. [Bellomo, M.; Cambiaghi, M.; Conta, C.; Ferrari, R.; Franchino, S.; Fraternali, M.; Gaudio, G.; Goggi, V.; Lanza, A.; Livan, M.; Negri, A.; Polesello, G.; Prata, M.; Rebuzzi, D. M.; Rimoldi, A.; Uslenghi, M.; Vercesi, V.] INFN, Sez Pavia, IT-27100 Pavia, Italy. [Cambiaghi, M.; Conta, C.; Franchino, S.; Fraternali, M.; Goggi, V.; Negri, A.; Prata, M.; Rebuzzi, D. M.; Rimoldi, A.; Uslenghi, M.] Univ Pavia, Dipartimento Fis Nucl & Teor, IT-27100 Pavia, Italy. [Alison, J.; Degenhardt, J.; Donega, M.; Dressnandt, N.; Fratina, S.; Hance, M.; Hines, E.; Jackson, B.; Keener, P. T.; Kroll, J.; Kunkle, J.; LeGeyt, B. C.; Lipeles, E.; Martin, F. F.; Munar, A.; Newcomer, F. M.; Olivito, D.; Ospanov, R.; Reece, R.; Stahlman, J.; Thomson, E.; Van Berg, R.; Wagner, P.; Williams, H. H.] Univ Penn, Dept Phys, High Energy Phys Grp, Philadelphia, PA 19104 USA. [Fedin, O. L.; Gratchev, V.; Maleev, V. P.; Nesterov, S. Y.; Ryabov, Y. F.; Schegelsky, V. A.; Sedykh, E.; Seliverstov, D. M.; Zalite, Yo. K.] Petersburg Nucl Phys Inst, RU-188300 Gatchina, Russia. [Cascella, M.; Cavasinni, V.; Cicalini, E.; Del Prete, T.; Dotti, A.; Francavilla, P.; Giangiobbe, V.; Lupi, A.; Mazzoni, E.; Roda, C.; Sarri, F.; Zenonos, Z.] INFN, Sez Pisa, IT-56127 Pisa, Italy. [Cascella, M.; Cavasinni, V.; Cicalini, E.; Del Prete, T.; Dotti, A.; Francavilla, P.; Giangiobbe, V.; Lupi, A.; Mazzoni, E.; Roda, C.; Sarri, F.; Zenonos, Z.] Univ Pisa, Dipartimento Fis, IT-56127 Pisa, Italy. [Boudreau, J.; Boulahouache, C.; Cleland, W.; Haboubi, G.; Kittelmann, T.; Mueller, J.; Paolone, V.; Prieur, D.; Savinov, V.; Tsulaia, V.; Wendler, S.; Yoosoofmiya, R.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. [Amorim, A.; Anjos, N.; Benincasa, G. P.; Carvalho, J.; Muino, P. Conde; Wemans, A. Do Valle; Fernandes, B.; Fiolhais, M. C. N.; Gomes, A.; Jorge, P. M.; Lopes, L.; Miguens, J. Machado; Martins, P. J. Magalhaes; Maio, A.; Maneira, J.; Morais, A.; Oliveira, M.; Onofre, A.; Palma, A.; Pina, J.; Pinto, B.; Saraiva, J. G.; Silva, J.; Soares, M.; Veloso, F.; Wolters, H.] Lab Instrumentacao Fis Expt Particulas LIP, PT-1000149 Lisbon, Portugal. [Aguilar-Saavedra, J. A.; Castro, N. F.] Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain. [Aguilar-Saavedra, J. A.; Castro, N. F.] Univ Granada, CAFPE, E-18071 Granada, Spain. [Bazalova, M.; Bohm, J.; Chudoba, J.; Gallus, P.; Gunther, J.; Havranek, M.; Hruska, I.; Jahoda, M.; Juranek, V.; Kepka, O.; Kupco, A.; Kus, V.; Kvasnicka, O.; Lipinsky, L.; Lokajicek, M.; Marcisovsky, M.; Mikestikova, M.; Myska, M.; Nemecek, S.; Panuskova, M.; Popule, J.; Ruzicka, P.; Schovancova, J.; Sicho, P.; Sluka, T.; Staroba, P.; Stastny, J.; Tasevsky, M.; Tic, T.; Tomasek, L.; Tomasek, M.; Valenta, J.; Vrba, V.] Acad Sci Czech Republic, Inst Phys, CZ-18221 Prague 8, Czech Republic. [Davidek, T.; Dolejsi, J.; Dolezal, Z.; Drasal, Z.; Kodys, P.; Leitner, R.; Novakova, J.; Reznicek, P.; Spousta, M.; Strachota, P.; Suk, M.; Sykora, T.; Tas, P.; Valkar, S.; Vorobel, V.; Wilhelm, I.] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, CZ-18000 Prague 8, Czech Republic. [Augsten, K.; Holy, T.; Horazdovsky, T.; Hubacek, Z.; Jakubek, J.; Kohout, Z.; Kral, V.; Krejci, F.; Pospisil, S.; Simak, V.; Slavicek, T.; Smolek, K.; Sodomka, J.; Solar, M.; Solc, J.; Sopko, V.; Sopko, B.; Stekl, I.; Turecek, D.; Vacek, V.; Vlasak, M.; Vokac, P.] Czech Tech Univ, CZ-16635 Prague 6, Czech Republic. [Ammosov, V. V.; Borisov, A.; Bozhko, N. I.; Denisov, S. P.; Evdokimov, V. N.; Fakhrutdinov, R. M.; Fenyuk, A. B.; Gapienko, V. A.; Golovnia, S. N.; Gorokhov, S. A.; Goryachev, V. N.; Gushchin, V. N.; Ivashin, A. V.; Kabachenko, V. V.; Karyukhin, A. N.; Kholodenko, A. G.; Kiver, A. M.; Kopikov, S. V.; Koreshev, V.; Korotkov, V. A.; Kozhin, A. S.; Lapin, V. V.; Larionov, A. V.; Levitski, M. S.; Makouski, M.; Minaenko, A. A.; Mitrofanov, G. Y.; Moisseev, A. M.; Myagkov, A. G.; Pleskach, A. V.; Ryadovikov, V.; Solodkov, A. A.; Solovyanov, O. V.; Starchenko, E. A.; Sviridov, Yu. M.; Vorobiev, A. P.; Vovenko, A. S.; Zaets, V. G.; Zaitsev, A. M.; Zenin, A. V.; Zenin, O.; Zmouchko, V. V.] State Res Ctr Inst High Energy Phys, Protvino 142281, Moscow Region, Russia. [Adye, T.; Baines, J. T.; Barnett, B. M.; Botterill, D.; Burke, S.; Clifft, R. W.; Dallison, S. J.; Dewhurst, A.; Emeliyanov, D.; Fisher, S. M.; Gallop, B. J.; Gee, C. N. P.; Gillman, A. R.; Greenfield, D.; Hart, J. C.; Haywood, S. J.; Kirk, J.; McCubbin, N. A.; McMahon, S. J.; Middleton, R. P.; Murray, W. J.; Norton, P. R.; Qian, W.; Sankey, D. P. C.; Scott, W. G.; Shah, T. P.; Strube, J.; Tyndel, M.; Villani, E. G.; Weber, M.; Wickens, F. J.; Wielers, M.] Rutherford Appleton Lab, Sci & Technol Facil Council, Didcot OX11 0QX, Oxon, England. [Benslama, K.; Kalinowski, A.; Ming, Y.; Ortega, E. O.] Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada. [Tanaka, S.] Ritsumeikan Univ, Shiga 5258577, Japan. [Anulli, F.; Bagnaia, P.; Biglietti, M.; Bini, C.; Boaretto, C.; Borroni, S.; Caloi, R.; Cavallari, A.; Ciapetti, G.; De Pedis, D.; De Salvo, A.; De Zorzi, G.; Di Domenico, A.; Dionisi, C.; Falciano, S.; Gauzzi, P.; Gentile, S.; Giagu, S.; Kuznetsova, E.; Lacava, F.; Luci, C.; Luminari, L.; Maiani, C.; Marzano, F.; Mirabelli, G.; Moch, M.; Nisati, A.; Oberson, P.; Pasqualucci, E.; Petrolo, E.; Pontecorvo, L.; Rescigno, M.; Robins, S.; Tehrani, F. Safai; Camillocci, E. Solfaroli; Spila, F.; Valente, P.; Vari, R.; Veneziano, S.; Zanello, L.] INFN, Sez Roma 1, IT-00185 Rome, Italy. [Bagnaia, P.; Biglietti, M.; Bini, C.; Boaretto, C.; Borroni, S.; Caloi, R.; Cavallari, A.; Ciapetti, G.; De Zorzi, G.; Di Domenico, A.; Dionisi, C.; Gauzzi, P.; Gentile, S.; Giagu, S.; Lacava, F.; Luci, C.; Maiani, C.; Moch, M.; Oberson, P.; Robins, S.; Tehrani, F. Safai; Camillocci, E. Solfaroli; Spila, F.; Zanello, L.] Univ Roma La Sapienza, Dipartimento Fis, IT-00185 Rome, Italy. [Aielli, G.; Camarri, P.; Cardarelli, R.; Cattani, G.; Di Ciaccio, A.; Di Nardo, R.; Di Simone, A.; Liberti, B.; Marchese, F.; Paoloni, A.; Salamon, A.; Santonico, R.] INFN, Sez Roma Tor Vergata, IT-00133 Rome, Italy. [Aielli, G.; Camarri, P.; Cattani, G.; Di Ciaccio, A.; Di Nardo, R.; Di Simone, A.; Marchese, F.; Paoloni, A.; Santonico, R.] Univ Roma Tor Vergata, Dipartimento Fis, IT-00133 Rome, Italy. [Bacci, C.; Baroncelli, A.; Branchini, P.; Ceradini, F.; Di Luise, S.; Farilla, A.; Graziani, E.; Iodice, M.; Orestano, D.; Passeri, A.; Pastore, F.; Petrucci, F.; Ruggieri, F.; Spiriti, E.; Spogli, L.; Stanescu, C.; Tonazzo, A.] INFN, Sez Roma Tre, IT-00146 Rome, Italy. [Bacci, C.; Ceradini, F.; Di Luise, S.; Orestano, D.; Pastore, F.; Petrucci, F.; Spogli, L.; Tonazzo, A.] Univ Roma Tre, Dipartimento Fis, IT-00146 Rome, Italy. [Benchekroun, D.; Chafaq, A.; Gouighri, M.; Goujdami, D.; Hoummada, A.] Univ Hassan 2, Reseau Univ Phys Hautes Energies RUPHE, Fac Sci Ain Chock, Ma Casablanca, Morocco. Ctr Natl Energie Sci Tech Nucl CNESTEN, Rabat 10001, Morocco. [Derkaoui, J. E.; Tayalati, Y.] Univ Mohamed Premier, LPTPM, Fac Sci, Oujda 60000, Morocco. [El Moursli, R. Cherkaoui; Ghazlane, H.] Univ Mohammed 5, Fac Sci, Rabat 10000, Morocco. [Bauer, F.; Besson, N.; Boonekamp, M.; Chevalier, L.; Chevallier, F.; Ernwein, J.; Etienvre, A. I.; Formica, A.; Gautard, V.; Guyot, C.; Hassani, S.; Kozanecki, W.; Lancon, E.; Laporte, J. F.; Le Menedeu, E.; Legendre, M.; Lenzi, B.; Mansoulie, B.; Marzin, A.; Meyer, J-P.; Mountricha, E.; Nicolaidou, R.; Ouraou, A.; Pomarede, D. M.; Ponsot, P.; Resende, B.; Royon, C. R.; Schune, Ph.; Schwindling, J.; Virchaux, M.] Ctr Etud Saclay, CEA, DSM IRFU, FR-91191 Gif Sur Yvette, France. [Bangert, A.; Chouridou, S.; Dubbs, T.; Fowler, K.; Grillo, A. A.; Hansl-Kozanecka, T.; Hare, G. A.; Litke, A. M.; Lockman, W. S.; Manning, P. M.; Mitrevski, J.; Nielsen, J.; Rosenbaum, F.; Sadrozinski, H. F-W.; Schumm, B. A.; Seiden, A.; Spencer, E.; Taylor, G.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys SCIPP, Santa Cruz, CA 95064 USA. [Daly, C. H.; Forbush, D. A.; Goussiou, A. G.; Griffiths, J.; Harris, O. M.; Kuykendall, W.; Lubatti, H. J.; Mockett, P.; Policicchio, A.; Rosati, S.; Rothberg, J.; Twomey, M. S.; Ventura, D.; Verducci, M.; Wang, J. C.; Watts, G.; Zhao, T.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Anastopoulos, C.; Bachacou, H.; Booth, C. N.; Booth, P.; Costanzo, D.; Donszelmann, T. Cuhadar; Dawson, I.; Duxfield, R.; Harper, R.; Hodgkinson, M. C.; Hodgson, P.; Johansson, P.; Korolkova, E. V.; Lehto, M.; Mayne, A.; Morgan, D.; Nicolas, L.; Owen, S.; Paganis, E.; Shaw, K.; Sutton, M. R.; Tovey, D. R.; Tsionou, D.; Walsh, S.; Xu, D.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England. [Hasegawa, Y.; Ohshita, H.; Takeshita, T.] Shinshu Univ, Dept Phys, Fac Sci, Matsumoto, JP Nagano 3908621, Japan. [Buchholz, P.; Fleck, I.; Grybel, K.; Holder, M.; Ibragimov, I.; Rammes, M.; Sipica, V.; Stahl, T.; Walkowiak, W.; Werthenbach, U.; Ziolkowski, M.] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany. [Bieri, M.; Godfrey, J.; Komaragiri, J. R.; O'Neil, D. C.; Petteni, M.; Rezaie, E.; Schouten, D.; Spreitzer, T.; Stelzer, B.; Stewart, T. D.; Vetterli, M. C.] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada. [Aracena, I.; Asai, M.; Barklow, T.; Bartoldus, R.; Bawa, H. S.; Butler, B.; Gao, Y. S.; Grenier, P.; Haas, A.; Hansson, P.; Horn, C.; Jackson, P.; Kim, P. C.; Kocian, M.; Koi, T.; Miller, D. W.; Mount, R.; Nelson, S.; Nelson, T. K.; Salnikov, A.; Schwartzman, A.; Silverstein, D.; Smith, D.; Su, D.; Wilson, M. G.; Wittgen, M.; Wright, D.; Young, C.] SLAC Natl Accelerator Lab, Stanford, CA 94309 USA. [Batkova, L.; Federic, P.; Pecsy, M.; Stavina, P.; Sykora, I.; Tokar, S.; Zenis, T.; Zilka, B.] Comenius Univ, Fac Math Phys & Informat, SK-84248 Bratislava, Slovakia. [Antos, J.; Bruncko, D.; Ferencei, J.; Kladiva, E.; Seman, M.; Strizenec, P.] Slovak Acad Sci, Inst Expt Phys, Dept Subnucl Phys, SK-04353 Kosice, Slovakia. [Asman, B.; Bohm, C.; Clement, C.; Eriksson, D.; Gellerstedt, K.; Hellman, S.; Hidvegi, A.; Hillert, S.; Holmgren, S. O.; Johansen, M.; Johansson, K. E.; Jon-And, K.; Lesser, J.; Milstead, D. A.; Moa, T.; Nordkvist, B.; Ohm, C. C.; Ramstedt, M.; Sellden, B.; Silverstein, S. B.; Sjoelin, J.; Tylmad, M.; Yang, Z.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden. [Asman, B.; Clement, C.; Gellerstedt, K.; Hellman, S.; Hillert, S.; Johansen, M.; Jon-And, K.; Milstead, D. A.; Moa, T.; Nordkvist, B.; Ohm, C. C.; Ramstedt, M.; Sjoelin, J.; Tylmad, M.; Yang, Z.] AlbaNova, Oskar Klein Ctr, SE-10691 Stockholm, Sweden. [Grahn, K-J.; Lund-Jensen, B.] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden. [Ahmad, A.; Caputo, R.; Deluca, C.; DeWilde, B.; Engelmann, R.; Farley, J.; Goodson, J. J.; Grassi, V.; Gray, J. A.; Grimm, K.; Hobbs, J.; Jia, J.; Khodinov, A.; McCarthy, R. L.; Rijssenbeek, M.; Schamberger, R. D.; Tsybychev, D.; Yurkewicz, A.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. [De Santo, A.; Potter, C. J.; Salvatore, F.] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England. [Lee, J. S. H.; Patel, N.; Peak, L. S.; Saavedra, A. F.; Varvell, K. E.; Vuaridel, B.; Waugh, A. T.] Univ Sydney, Sch Phys, Au Sydney, NSW 2006, Australia. [Chu, M. L.; Hou, S.; Lee, S. C.; Liang, Z.; Lin, S. C.; Liu, D.; Mazini, R.; Meng, Z.; Qing, D.; Ren, Z. L.; Soh, D. A.; Teng, P. K.; Wang, S. M.; Weng, Z.; Zhong, J.; Zhou, Y.] Acad Sinica, Inst Phys, Tw Taipei 11529, Taiwan. [Harpaz, S. Behar; Ben Ami, S.; Bressler, S.; Hershenhorn, A. D.; Kajomovitz, E.; Landsman, H.; Lifshitz, R.; Rozen, Y.; Tarem, S.; Tennenbaum-Katan, Y. D.; Vallecorsa, S.] Technion Israel Inst Technol, Dept Phys, IL-32000 Technion, IL Haifa, Israel. [Abramowicz, H.; Alexander, G.; Amram, N.; Bella, G.; Benary, O.; Benhammou, Y.; Brodet, E.; Etzion, E.; Gershon, A.; Ginzburg, J.; Guttman, N.; Hod, N.; Kreisel, A.; Mahalalel, Y.; Munwes, Y.; Oren, Y.; Reinherz-Aronis, E.; Silver, Y.; Soffer, A.; Urkovsky, E.] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Ramat Aviv, IL Tel Aviv, Israel. [Iliadis, D.; Kordas, K.; Nomidis, I.; Petridou, C.; Sampsonidis, D.] Aristotle Univ Thessaloniki, Fac Sci, Dept Phys, Div Nucl & Particle Phys, GR-54124 Thessaloniki, Greece. [Asai, S.; Azuma, Y.; Dohmae, T.; Imori, M.; Isobe, T.; Kanaya, N.; Kaneda, M.; Kataoka, Y.; Kawamoto, T.; Kessoku, K.; Kobayashi, T.; Kubota, T.; Mashimo, T.; Masubuchi, T.; Matsumoto, H.; Matsunaga, H.; Nakamura, K.; Nomoto, H.; Oda, S.; Okuyama, T.; Sakamoto, H.; Suzuki, T.; Tanaka, J.; Terashi, K.; Ueda, I.; Yamamoto, S.; Yamamura, T.; Yamazaki, T.] Univ Tokyo, Int Ctr Elementary Particle Phys, Jp Tokyo 1130033, Japan. [Asai, S.; Azuma, Y.; Dohmae, T.; Imori, M.; Isobe, T.; Kanaya, N.; Kaneda, M.; Kataoka, Y.; Kawamoto, T.; Kessoku, K.; Kobayashi, T.; Kubota, T.; Mashimo, T.; Masubuchi, T.; Matsumoto, H.; Matsunaga, H.; Nakamura, K.; Nomoto, H.; Oda, S.; Okuyama, T.; Sakamoto, H.; Suzuki, T.; Tanaka, J.; Terashi, K.; Ueda, I.; Yamamoto, S.; Yamamura, T.; Yamazaki, T.] Univ Tokyo, Dept Phys, Bunkyo Ku, Jp Tokyo 1130033, Japan. [Bratzler, U.; Fukunaga, C.] Tokyo Metropolitan Univ, Grad Sch Sci & Technol, Tokyo 1920397, Japan. [Jinnouchi, O.; Kuze, M.] Tokyo Inst Technol, Meguro Ku, Tokyo 1528551, Japan. [Akimoto, G.; Bailey, D. C.; Bain, T.; Beare, B.; Brelier, B.; Montero, S. Carron; Cheung, S. L.; Deviveiros, P. O.; Dhaliwal, S.; Farooque, T.; Fatholahzadeh, B.; Gibson, A.; Gorbounov, P. A.; Groer, L. S.; Guo, B.; Jankowski, E.; Joo, K. K.; Knecht, N. S.; Krieger, P.; Le Maner, C.; Martens, F. K.; Mayer, J. K.; Orr, R. S.; Rezvani, R.; Rosenbaum, G. A.; Sandhu, P.; Savard, P.; Sinervo, P.; Tardif, D.; Teuscher, R. J.; Thompson, P. D.; Trischuk, W.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. [Canepa, A.; Chekulaev, S. V.; Fortin, D.; Ishizawa, Y.; Kurchaninov, L. L.; Losty, M. J.; Nugent, I. M.; Oram, C. J.; Stelzer-Chilton, O.; Tafirout, R.; Trigger, I. M.; Wellisch, H. P.] TRIUMF, Vancouver, BC V6T 2A3, Canada. [Idarraga, J.; Martynenko, V.; Taylor, W.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Hara, K.; Kim, S. H.; Kurata, M.; Mitsui, S.; Nagai, K.; Ukegawa, F.; Yamada, M.] Univ Tsukuba, Inst Pure & Appl Sci, Tsukuba, JP Ibaraki 3058571, Japan. [Hamilton, S.; Mann, W. A.; Rolli, S.; Sliwa, K.; Todorova-Nova, S.] Tufts Univ, Ctr Sci & Technol, Medford, MA 02155 USA. [Losada, M.; Mendoza Navas, L.; Navarro, G.; Roa Romero, D. A.; Rodriguez, D.] Univ Antonio Narino, Ctr Invest, Bogota, Colombia. [Avolio, G.; Benedict, B. H.; Bold, T.; Bondioli, M.; Ciobotaru, M. D.; Corso-Radu, A.; Deng, J.; Dobson, M.; Gough Eschrich, I.; Grabowska-Bold, I.; Hawkins, D.; Kolos, S.; Lankford, A. J.; Murillo Garcia, R.; Okawa, H.; Porter, R.; Schernau, M.; Stancu, S. N.; Taffard, A.; Toggerson, B.; Unel, G.; Werth, M.; Wheeler-Ellis, S. J.; Whiteson, D.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Acharya, B. S.; Cauz, D.; Cobal, M.; De Lotto, B.; De Sanctis, U.; Del Papa, C.; Giordani, M. P.; Luisa, L.; Pinamonti, M.; Suruliz, K.] INFN, Grp Coll Udine, IT-34014 Trieste, Italy. [Acharya, B. 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T.; Ros, E.; Salt, J.; Solans, C. A.; Sanchez, J.; Torro Pastor, E.; Valladolid Gallego, E.; Valls Ferrer, J. A.; Villaplana Perez, M.; Vos, M.; Wildauer, A.] Ctr Mixto UVEG CSIC, Inst Fis Corpuscular IFIC, ES-46071 Valencia, Spain. [Amoros, G.; Cabrera Urban, S.; Gimenez, V. Castillo; Costa, M. J.; Escobar, C.; Ferrer, A.; Fuster, J.; Garcia, C.; Gonzalez de la Hoz, S.; Higon-Rodriguez, E.; Irles Quiles, A.; Kaci, M.; Lacasta, C.; Lacuesta, V. R.; Marti-Garcia, S.; Mitsou, V. A.; Moles-Valls, R.; Moreno Llacer, M.; Oliver Garcia, E.; Perez Garcia-Estan, M. T.; Ros, E.; Salt, J.; Solans, C. A.; Sanchez, J.; Torro Pastor, E.; Valladolid Gallego, E.; Valls Ferrer, J. A.; Villaplana Perez, M.; Vos, M.; Wildauer, A.] Univ Valencia, Dept Fis At Mol & Nucl, Barcelona 08193, Spain. [Amoros, G.; Cabrera Urban, S.; Gimenez, V. Castillo; Costa, M. 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[Alon, R.; Duchovni, E.; Gabizon, O.; Gross, E.; Klier, A.; Lellouch, D.; Levinson, L. J.; Mikenberg, G.; Milov, A.; Milstein, D.; Silbert, O.; Smakhtin, V.; Vitells, O.] Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel. [Asfandiyarov, R.; Montoya, G. D. Carrillo; Hernandez, A. M. Castaneda; Castaneda-Miranda, E.; Chen, X.; Dos Anjos, A.; Fang, Y.; Castillo, L. R. Flores; Gutzwiller, O.; Jared, R. C.; Cheong, A. Leung Fook; Li, H.; Ma, L. L.; Garcia, B. R. Mellado; Pan, Y. B.; Morales, M. I. Pedraza; Peng, H.; Poveda, J.; Quayle, W. B.; Sarangi, T.; Wang, H.; Wiedenmann, W.; Wu, S. L.; Xu, N.; Zhu, Y.; Zobernig, G.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. [Fleischmann, P.; Meyer, J.; Redelbach, A.; Stroehmer, R.; Trefzger, T.] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany. [Barisonzi, M.; Becks, K. H.; Boek, J.; Braun, H. M.; Dopke, J.; Drees, J.; Flick, T.; Gerlach, P.; Glitza, K. 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[Conventi, F.; Della Pietra, M.] Univ Napoli Parthenope, IT-80133 Naples, Italy. [Dhullipudi, R.; Greenwood, Z. D.; Sawyer, L.] Louisiana Tech Univ, Ruston, LA 71272 USA. [Gao, Y. S.] Calif State Univ Fresno, Dept Phys, Fresno, CA 93740 USA. [Gray, H. M.; Mateos, D. Lopez; Marshall, Z.; Perez, K.] CALTECH, Dept Phys, Pasadena, CA 91125 USA. [Haller, J.; Kono, T.; Terwort, M.; Wildt, M. A.] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany. [Kolos, S.] Petersburg Nucl Phys Inst, RU-188300 Gatchina, Russia. [Liang, Z.; Weng, Z.] Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou, Guangdong, Peoples R China. [Liu, D.; Meng, Z.] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China. [Mattravers, C.] Rutherford Appleton Lab, Sci & Technol Facil Council, Didcot OX11, Oxon, England. [Nash, M.] Rutherford Appleton Lab, Sci & Technol Facil Council, Didcot OX11 0QX, Oxon, England. [Park, W.; Purohit, M.; Trivedi, A.] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA. [Pasztor, G.; Toth, J.] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary. [Richter-Was, E.] Jagiellonian Univ, Inst Phys, Krakow, Poland. [Weng, Z.] Nanjing Univ, Sch Phys & Engn, Nanjing, Peoples R China. [Zhong, J.] Nanjing Univ, Dept Phys, Nanjing, Peoples R China. RP Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hermann Herder Str 3, D-79104 Freiburg, Germany. RI Canelli, Florencia/O-9693-2016; Battistoni, Giuseppe/B-5264-2012; Mindur, Bartosz/A-2253-2017; Idzik, Marek/A-2487-2017; Mashinistov, Ruslan/M-8356-2015; Solodkov, Alexander/B-8623-2017; Zaitsev, Alexandre/B-8989-2017; Yang, Haijun/O-1055-2015; Jones, Roger/H-5578-2011; Vranjes Milosavljevic, Marija/F-9847-2016; SULIN, VLADIMIR/N-2793-2015; vasilyeva, lidia/M-9569-2015; Popescu, Razvan/H-6521-2016; Samset, Bjorn H./B-9248-2012; Olshevskiy, Alexander/I-1580-2016; Casado, Pilar/H-1484-2015; Maneira, Jose/D-8486-2011; KHODINOV, ALEKSANDR/D-6269-2015; Morone, Maria Cristina/P-4407-2016; Goncalo, Ricardo/M-3153-2016; Camarri, Paolo/M-7979-2015; Gavrilenko, Igor/M-8260-2015; Levonian, Sergey/M-8693-2015; Akimov, Andrey/N-1769-2015; Chekulaev, Sergey/O-1145-2015; Gorelov, Igor/J-9010-2015; Konovalov, Serguei/M-9505-2015; Booth, Christopher/B-5263-2016; Gonzalez de la Hoz, Santiago/E-2494-2016; Smirnova, Oxana/A-4401-2013; Aguilar Saavedra, Juan Antonio/F-1256-2016; Leyton, Michael/G-2214-2016; 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Petrucci, Fabrizio/G-8348-2012; Wemans, Andre/A-6738-2012; Fabbri, Laura/H-3442-2012; Kurashige, Hisaya/H-4916-2012; Kuzhir, Polina/H-8653-2012; Delmastro, Marco/I-5599-2012; manca, giulia/I-9264-2012; Veneziano, Stefano/J-1610-2012; Bauer, Florian/G-8816-2011; crosetti, nanni/H-3040-2011; Ferrando, James/A-9192-2012; collins-tooth, christopher/A-9201-2012; De Cecco, Sandro/B-1016-2012; branchini, paolo/A-4857-2011; Wolter, Marcin/A-7412-2012; Rotaru, Marina/A-3097-2011; Szczygiel, Robert/B-5662-2011; Takai, Helio/C-3301-2012; St.Denis, Richard/C-8997-2012; Britton, David/F-2602-2010; Li, Xuefei/C-3861-2012; Doyle, Anthony/C-5889-2009; Marti-Garcia, Salvador/F-3085-2011; valente, paolo/A-6640-2010; Moraes, Arthur/F-6478-2010; Perrino, Roberto/B-4633-2010; Robson, Aidan/G-1087-2011; Di Domenico, Antonio/G-6301-2011; Gutierrez, Phillip/C-1161-2011; Stoicea, Gabriel/B-6717-2011; Alexa, Calin/F-6345-2010; Buttar, Craig/D-3706-2011; de Groot, Nicolo/A-2675-2009; Rescia, Sergio/D-8604-2011; 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Moraes, Arthur/0000-0002-5157-5686; Perrino, Roberto/0000-0002-5764-7337; Di Domenico, Antonio/0000-0001-8078-2759; Stoicea, Gabriel/0000-0002-7511-4614; Rescia, Sergio/0000-0003-2411-8903; FU ANPCyT, Argentina; Yerevan Physics Institute, Austria; National Academy of Sciences of Azerbaijan; State Committee on Science & Technologies of the Republic of Belarus; CNPq; FINEP, Brazil; NSERC; NRC; CFI, Canada; CERN; CONICYT, Chile; NSFC, China; COLCIENCIAS, Colombia; Ministry of Education, Youth and Sports of the Czech Republic; Ministry of Industry and Trade of the Czech Republic; Committee for Collaboration of the Czech Republic; Danish Natural Science Research Council; Lundbeck Foundation; European Commission through the ARTEMIS Research Training Network; IN2P3-CNRS; Dapnia-CEA, France; Georgian Academy of Sciences; BMBF; DFG; HGF; MPG, Germany; Ministry of Education and Religion; GSRT, Greece; ISF; MINERVA; GIF; DIP; Benoziyo Center, Israel; INFN, Italy; MEXT, Japan; CNRST, Morocco; FOM; NWO, Netherlands; The Research Council of Norway; Ministry of Science and Higher Education, Poland; GRICES; FCT, Portugal; Ministry of Education and Research, Romania; Ministry of Education and Science of the Russian Federation; State Atomic Energy Corporation ROSATOM; JINR; Ministry of Science, Serbia; Department of International Science and Technology Cooperation, Ministry of Education of the Slovak Republic; Slovenian Research Agency, Ministry of Higher Education, Science and Technology, Slovenia; Ministerio de Educacion y Ciencia, Spain; The Swedish Research Council; The Knut and Alice Wallenberg Foundation, Sweden; State Secretariat for Education and Science; Swiss National Science Foundation; Cantons of Bern and Geneva, Switzerland; National Science Council, Taiwan; TAEK, Turkey; The Science and Technology Facilities Council; The Leverhulme Trust, United Kingdom; DOE; NSF, United States of America FX We acknowledge the support of ANPCyT, Argentina; Yerevan Physics Institute, Austria; National Academy of Sciences of Azerbaijan; State Committee on Science & Technologies of the Republic of Belarus; CNPq and FINEP, Brazil; NSERC, NRC, and CFI, Canada; CERN; CONICYT, Chile; NSFC, China; COLCIENCIAS, Colombia; Ministry of Education, Youth and Sports of the Czech Republic, Ministry of Industry and Trade of the Czech Republic, and Committee for Collaboration of the Czech Republic with CERN; Danish Natural Science Research Council and the Lundbeck Foundation; European Commission, through the ARTEMIS Research Training Network; IN2P3-CNRS and Dapnia-CEA, France; Georgian Academy of Sciences; BMBF, DFG, HGF and MPG, Germany; Ministry of Education and Religion, through the EPEAEK program PYTHAGORAS II and GSRT, Greece; ISF, MINERVA, GIF, DIP, and Benoziyo Center, Israel; INFN, Italy; MEXT, Japan; CNRST, Morocco; FOM and NWO, Netherlands; The Research Council of Norway; Ministry of Science and Higher Education, Poland; GRICES and FCT, Portugal; Ministry of Education and Research, Romania; Ministry of Education and Science of the Russian Federation and State Atomic Energy Corporation ROSATOM; JINR; Ministry of Science, Serbia; Department of International Science and Technology Cooperation, Ministry of Education of the Slovak Republic; Slovenian Research Agency, Ministry of Higher Education, Science and Technology, Slovenia; Ministerio de Educacion y Ciencia, Spain; The Swedish Research Council, The Knut and Alice Wallenberg Foundation, Sweden; State Secretariat for Education and Science, Swiss National Science Foundation, and Cantons of Bern and Geneva, Switzerland; National Science Council, Taiwan; TAEK, Turkey; The Science and Technology Facilities Council and The Leverhulme Trust, United Kingdom; DOE and NSF, United States of America. NR 19 TC 4 Z9 4 U1 6 U2 66 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 SEP PY 2010 IS 9 AR 056 PG 66 WC Physics, Particles & Fields SC Physics GA 706PK UT WOS:000286230100001 ER PT J AU Acharya, BS Bobkov, K AF Acharya, Bobby S. Bobkov, Konstantin TI Kahler independence of the G(2)-MSSM SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE Superstring Vacua; M-Theory ID SOFT SUPERSYMMETRY BREAKING; FLUX COMPACTIFICATION; GAUGE-THEORIES; SUPERGRAVITY; MANIFOLDS; COUPLINGS; LAPLACIAN; HOLONOMY; TORSION; MASSES AB The G(2)-MSSM is a model of particle physics coupled to moduli fields with interesting phenomenology both for colliders and astrophysical experiments. In this paper we consider a more general model-whose moduli Kahler potential is a completely arbitrary G(2)-holonomy Kahler potential and whose matter Kahler potential is also more general. We prove that the vacuum structure and spectrum of BSM particles is largely unchanged in this much more general class of theories. In particular, gaugino masses are still suppressed relative to the gravitino mass and moduli masses. We also consider the effects of higher order corrections to the matter Kahler potential and find a connection between the nature of the LSP and flavor effects. C1 [Acharya, Bobby S.] Abdus Salam Int Ctr Theoret Phys, Trieste, Italy. [Acharya, Bobby S.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy. [Bobkov, Konstantin] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA. RP Acharya, BS (reprint author), Abdus Salam Int Ctr Theoret Phys, Str Costiera 11, Trieste, Italy. EM bacharya@ictp.it; bobkov@mps.ohio-state.edu FU MCTP Ann Arbor; US Department of Energy FX We would like to thank Jacob Bourjaily, Volker Braun, Kiwoon Choi, Joseph Conlon, Phill Grajek, Shamit Kachru, David Morrissey, Brent Nelson, Jogesh Pati, Aaron Pierce, Stuart Raby, Timo Weigand and Alexander Westphal for useful discussions and in particular acknowledge the input of our collaborators Gordy Kane, Piyush Kumar, Jing Shao and Scott Watson without whom this work would not have been possible. BSA thanks the MCTP Ann Arbor for hospitality and support when this project was initiated. The research of KB is supported in part by the US Department of Energy. KB thanks SLAC for their hospitality. NR 56 TC 10 Z9 10 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 SEP PY 2010 IS 9 AR 001 DI 10.1007/JHEP09(2010)001 PG 53 WC Physics, Particles & Fields SC Physics GA 656WD UT WOS:000282370900056 ER PT J AU Beltran, M Hooper, D Kolb, EW Krusberg, ZAC Tait, TMP AF Beltran, Maria Hooper, Dan Kolb, Edward W. Krusberg, Zosia A. C. Tait, Tim M. P. TI Maverick dark matter at colliders SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE Beyond Standard Model; Hadronic Colliders ID PARTICLE; PHYSICS AB Assuming that dark matter is a weakly interacting massive particle (WIMP) species X produced in the early Universe as a cold thermal relic, we study the collider signal of pp or p (p) over bar -> (X) over bar X + jets and its distinguishability from standard-model background processes associated with jets and missing energy. We assume that the WIMP is the sole particle related to dark matter within reach of the LHC - a "maverick" particle - and that it couples to quarks through a higher dimensional contact interaction. We simulate the WIMP final-state signal X (X) over bar + jets and dominant standard-model (SM) background processes and find that the dark-matter production process results in higher energies for the colored final state partons than do the standard-model background processes. As a consequence, the detectable signature of maverick dark matter is an excess over standard-model expectations of events consisting of large missing transverse energy, together with large leading jet transverse momentum and scalar sum of the transverse momenta of the jets. Existing Tevatron data and forthcoming LHC data can constrain (or discover!) maverick dark matter. C1 [Beltran, Maria; Hooper, Dan; Kolb, Edward W.] Univ Chicago, Ctr Astron & Astrophys, Chicago, IL 60637 USA. [Beltran, Maria; Kolb, Edward W.; Krusberg, Zosia A. C.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Hooper, Dan] Fermilab Natl Accelerator Lab, Chicago, IL 60637 USA. [Hooper, Dan; Kolb, Edward W.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Krusberg, Zosia A. C.] Univ Chicago, Dept Phys, Chicago, IL 60637 USA. [Tait, Tim M. P.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. RP Beltran, M (reprint author), Univ Chicago, Ctr Astron & Astrophys, 5640 S Ellis Ave, Chicago, IL 60637 USA. EM beltran@uchicago.edu; dhooper@fnal.gov; rocky.kolb@uchicago.edu; zosia@uchicago.edu; ttait@uci.edu FU Department of Energy at the University of Chicago and Fermilab FX We would like to thank Florencia Canelli, John Conway, Jonathan Feng, Henry Frisch, JoAnne Hewett, Ben Kiliminster, Tom LeCompte, Frank Petriello, Tilman Plehn, Will Shepherd, Jay Wacker, and Lian-tao Wang for useful discussions. This work was supported in part by the Department of Energy at the University of Chicago and Fermilab. T. Tait is grateful to the SLAC theory group for their hospitality during his many visits. NR 32 TC 141 Z9 141 U1 3 U2 10 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 SEP PY 2010 IS 9 AR 037 DI 10.1007/JHEP09(2010)037 PG 17 WC Physics, Particles & Fields SC Physics GA 656WD UT WOS:000282370900020 ER PT J AU Capitani, S Creutz, M Weber, J Wittig, H AF Capitani, Stefano Creutz, Michael Weber, Johannes Wittig, Hartmut TI Renormalization of minimally doubled fermions SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE Lattice QCD; Lattice Gauge Field Theories; Global Symmetries ID LATTICE FERMIONS; PERTURBATION-THEORY; WILSON FERMIONS; NEUTRINOS; ABSENCE; PROOF AB We investigate the renormalization properties of minimally doubled fermions, at one loop in perturbation theory. Our study is based on the two particular realizations of Borici-Creutz and Karsten-Wilczek. A common feature of both formulations is the breaking of hyper-cubic symmetry, which requires that the lattice actions are supplemented by suitable counterterms. We show that three counterterms are required in each case and determine their coefficients to one loop in perturbation theory. For both actions we compute the vacuum polarization of the gluon. It is shown that no power divergences appear and that all contributions which arise from the breaking of Lorentz symmetry are cancelled by the counterterms. We also derive the conserved vector and axial-vector currents for Karsten-Wilczek fermions. Like in the case of the previously studied Borici-Creutz action, one obtains simple expressions, involving only nearest-neighbour sites. We suggest methods how to fix the coefficients of the counterterms non-perturbatively and discuss the implications of our findings for practical simulations. C1 [Capitani, Stefano; Creutz, Michael; Weber, Johannes; Wittig, Hartmut] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany. [Creutz, Michael] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Capitani, S (reprint author), Johannes Gutenberg Univ Mainz, Inst Kernphys, Becher Weg 45, D-55099 Mainz, Germany. EM capitan@kph.uni-mainz.de; mike@latticeguy.net; weberj@kph.uni-mainz.de; wittig@kph.uni-mainz.de OI Weber, Johannes Heinrich/0000-0002-2336-1541 FU Deutsche Forschungsgemeinschaft [SFB443]; GSI Helmholtz-Zentrum fur Schwerionenforschung; State of Rhineland-Palatinate; U.S. Department of Energy [DE-AC02-98CH10886]; Alexander von Humboldt Foundation FX We warmly thank Martin Luscher for clarifying discussions and useful suggestions, especially concerning the counterterms. This work was supported by Deutsche Forschungsgemeinschaft (SFB443), the GSI Helmholtz-Zentrum fur Schwerionenforschung, and the Research Centre "Elementary Forces and Mathematical Foundations" (EMG) funded by the State of Rhineland-Palatinate. MC was supported by contract number DE-AC02-98CH10886 with the U.S. Department of Energy. Accordingly, the U.S. Government retains a non-exclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes. MC is particularly grateful to the Alexander von Humboldt Foundation for support for multiple visits to the University of Mainz. NR 24 TC 15 Z9 15 U1 0 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 SEP PY 2010 IS 9 AR 027 DI 10.1007/JHEP09(2010)027 PG 26 WC Physics, Particles & Fields SC Physics GA 656WD UT WOS:000282370900030 ER PT J AU Cheung, C O'Connell, D Wecht, B AF Cheung, Clifford O'Connell, Donal Wecht, Brian TI BCFW recursion relations and string theory SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE Superstrings and Heterotic Strings; Bosonic Strings ID TREE AMPLITUDES AB We demonstrate that all tree-level string theory amplitudes can be computed using the BCFW recursion relations. Our proof utilizes the pomeron vertex operator introduced by Brower, Polchinski, Strassler, and Tan. Surprisingly, we find that in a particular large complex momentum limit, the asymptotic expansion of massless string amplitudes is identical in form to that of the corresponding field theory amplitudes. This observation makes manifest the fact that field-theoretic Yang-Mills and graviton amplitudes obey KLT-like relations. Moreover, we conjecture that in this large momentum limit certain string theory and field theory amplitudes are identical, and provide evidence for this conjecture. Additionally, we find a new recursion relation which relates tachyon amplitudes to lower-point tachyon amplitudes. C1 [Cheung, Clifford] Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA. [Cheung, Clifford] LBNL, Theoret Phys Grp, Berkeley, CA 94720 USA. [O'Connell, Donal; Wecht, Brian] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA. RP Cheung, C (reprint author), Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA. EM clifford.cheung@berkeley.edu; donal@ias.edu; bwecht@ias.edu FU National Science Foundation [PHY-0555661]; DOE [DE-FG02-90ER40542]; Peggy Taplin Membership at the Institute for Advanced Study FX We would like to thank Nima Arkani-Hamed and Juan Maldacena for useful discussions. CC is supported by the National Science Foundation under grant PHY-0555661. DOC is supported in part by DOE grant DE-FG02-90ER40542, and by the Martin A. and Helen Chooljian Membership at the Institute for Advanced Study. BW is supported in part by DOE grant DE-FG02-90ER40542, and by the Frank and Peggy Taplin Membership at the Institute for Advanced Study. NR 27 TC 28 Z9 28 U1 1 U2 1 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 SEP PY 2010 IS 9 AR 052 DI 10.1007/JHEP09(2010)052 PG 32 WC Physics, Particles & Fields SC Physics GA 656WD UT WOS:000282370900005 ER PT J AU Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Ero, J Fabjan, C Friedl, M Fruhwirth, R Ghete, VM Hammer, J Hansel, S Hartl, C Hoch, M Ormann, NH Hrubec, J Jeitler, M Kasieczka, G Kiesenhofer, W Krammer, M Liko, D Mikulec, I Pernicka, M Rohringer, H Schofbeck, R Strauss, J Taurok, A Teischinger, F Waltenberger, W Walzel, G Widl, E Wulz, CE Mossolov, V Shumeiko, N Gonzalez, JS Benucci, L Ceard, L De Wolf, EA Janssen, X Macs, T Mucibello, L Ochesanu, S Roland, B Rougny, R Selvaggi, M Van Haevermaet, H Van Mechelen, P Van Remortel, N Adler, V Beauceron, S Blyweert, S D'Hondt, J Devroede, O Kalogeropoulos, A Maes, J Maes, M Tavernier, S Van Doninck, W Van Mulders, P Villella, I Chabert, EC Charaf, O Clerbaux, B De Lentdecker, G Dero, V Gay, APR Hammad, GH Hreus, T Marage, PE Velde, CV Vanlaer, P Wickens, J Costantini, S Grunewald, M Klein, B Marinov, A Ryckbosch, D Thyssen, F Tytgat, M Vanelderen, L Verwilligen, P Walsh, S Zaganidis, N Basegmez, S Bruno, G Caudron, J de Jeneret, JDF Delaere, C Demin, P Favart, D Giammanco, A Gregoire, G Hollar, J Lemaitre, V Militaru, O Ovyn, S Pagano, D Pin, A Piotrzkowski, K Quertenmont, L Schul, N Beliy, N Caebergs, T Daubie, E Alves, GA Damiao, DDJ Pol, ME Souza, MHG Carvalho, W Da Costa, EM Martins, CDO De Souza, SF Mundim, L Nogima, H Oguri, V Goicochea, MO Da Silva, WLP Santoro, A Do Amaral, SMS Sznajder, A De Araujo, FTD Dias, FA Dias, MAF Tomei, TRFP Gregores, EM Marinho, F Novaes, SF Padula, SS Darmenov, N Dimitrov, L Genchev, V Iaydjiev, P Piperov, S Rodozov, M Stoykova, S Sultanov, G Tcholakov, V Trayanov, R Vankov, I Dyulendarova, M Hadjiiska, R Kozhuharov, V Litov, L Marinova, E Mateev, M Pavlov, B Petkov, P Bian, JG Chen, GM Chen, HS Jiang, CH Liang, D Liang, S Wang, J Wang, J Wang, X Wang, Z Yang, M Zang, J Zhang, Z Ban, Y Guo, S Hu, Z Li, W Mao, Y Qian, SJ Teng, H Zhu, B Cabrera, A Moreno, BG Rios, AAO Oliveros, AFO Sanabria, JC Godinovic, N Lelas, D Lelas, K Plestina, R Polic, D Puljak, I Antunovic, Z Dzelalija, M Brigljevic, V Duric, S Kadija, K Morovic, S Attikis, A Fereos, R Galanti, M Mousa, J Nicolaou, C Ptochos, F Razis, PA Rykaczewski, H Assran, Y Mahmoud, MA Hektor, A Kadastik, M Muntel, M Raidal, M Rebane, L Azzolini, V Eerola, P Czellar, S Harkonen, J Heikkinen, A Karimaki, V Kinnunen, R Klem, J Kortelainen, MJ Lampen, T Lassila-Perini, K Lehti, S Linden, T Luukka, P Maenpaa, T Tuominen, E Tuominiemi, J Tuovinen, E Ungaro, D Wendland, L Banzuzi, K Korpela, A Tuuva, T Sillou, D Besancon, M Dejardin, M Denegri, D Descamps, J Fabbro, B Faure, JL Ferri, F Ganjour, S Gentit, FX Givernaud, A Gras, P de Monchenault, GH Jarry, P Locci, E Malcles, J Marionneau, M Millischer, L Rander, J Rosowsky, A Rousseau, D Titov, M Verrecchia, P Baffioni, S Bianchini, L Bluj, M Broutin, C Busson, P Charlot, C Dobrzynski, L de Cassagnac, RG Haguenauer, M Mine, P Mironov, C Ochando, C Paganini, P Sabes, D Salerno, R Sirois, Y Thiebaux, C Zabi, A Agram, JL Besson, A Bloch, D Bodin, D Brom, JM Cardaci, M Conte, E Drouhin, F Ferro, C Fontaine, JC Gele, D Goerlach, U Greder, S Juillot, P Karim, M Le Bihan, AC Mikami, Y Van Hove, P Fassi, F Mercier, D Baty, C Beaupere, N Bedjidian, M Bondu, O Boudoul, G Boumediene, D Brun, H Chanon, N Chierici, R Contardo, D Depasse, P El Mamouni, H Falkiewicz, A Fay, J Gascon, S Ille, B Kurca, T Le Grand, T Lethuillier, M Mirabito, L Perries, S Sordini, V Tosi, S Tschudi, Y Verdier, P Xiao, H Roinishvili, V Anagnostou, G Edelhoff, M Feld, L Heracleous, N Hindrichs, O Jussen, R Klein, K Merz, J Mohr, N Ostapchuk, A Perieanu, A Raupach, F Sammet, J Schael, S Sprenger, D Weber, H Weber, M Wittmer, B Ata, M Bender, W Erdmann, M Frangenheim, J Hebbeker, T Hinzmann, A Hoepfner, K Hof, C Klimkovich, T Klingebiel, D Kreuzer, P Lanske, D Magass, C Masetti, G Merschmeyer, M Meyer, A Papacz, P Pieta, H Reithler, H Schmitz, SA Sonnenschein, L Steggemann, J Teyssier, D Bontenackels, M Davids, M Duda, M Fluggee, G Geenen, H Giffels, M Ahmad, WH Heydhausen, D Kress, T Kuessel, Y Linn, A Nowack, A Perchalla, L Pooth, O Rennefeld, J Sauerland, P Stahl, A Thomas, M Tornier, D Zoeller, MH Martin, MA Behrenhoff, W Behrens, U Bergholz, M Borras, K Campbell, A Castro, E Dammann, D Eckerlin, G Flossdorf, A Flucke, G Geiser, A Glushkov, I Hauk, J Jung, H Kasemann, M Katkov, I Katsas, P Kleinwort, C Kluge, H Knutsson, A Krucker, D Kuznetsova, E Lange, W Lohmann, W Mankel, R Marienfeld, M Melzer-Pellmann, IA Meyer, AB Mnich, J Mussgiller, A Olzem, J Parenti, A Raspereza, A Raval, A Schmidt, R Schoerner-Sadenius, T Sen, N Stein, M Tomaszewska, J Volyanskyy, D Walsh, R Wissing, C Autermann, C Bobrovskyi, S Draeger, J Eckstein, D Enderle, H Gebbert, U Kaschube, K Kaussen, G Klanner, R Mura, B Naumann-Emme, S Nowak, F Pietsch, N Sander, C Schettler, H Schleper, P Schroder, M Schum, T Schwandt, J Srivastava, AK Stadie, H Steinbruck, G Thomsen, J Wolf, R Bauer, J Buege, V Cakir, A Chwalek, T Daeuwel, D De Boer, W Dierlamm, A Dirkes, G Feindt, M Gruschke, J Hackstein, C Hartmann, F Heinrich, M Held, H Hoffmann, KH Honc, S Kuhr, T Martschei, D Mueller, S Muller, T Neuland, MB Niegel, M Oberst, O Oehler, A Ott, J Peiffer, T Piparo, D Quast, G Rabbertz, K Ratnikov, F Renz, M Sabellek, A Saout, C Scheurer, A Schieferdecker, P Schilling, FP Schott, G Simonis, HJ Stober, FM Troendle, D Wagner-Kuhr, J Zeise, M Zhukov, V Ziebarth, EB Daskalakis, G Geralis, T Kesisoglou, S Kyriakis, A Loukas, D Manolakos, I Markou, A Markou, C Mavrommatis, C Petrakou, E Gouskos, L Mertzimekis, T Panagiotou, A Evangelou, I Kokkas, P Manthos, N Papadopoulos, I Patras, V Triantis, FA Aranyi, A Bencze, G Boldizsar, L Debreczeni, G Hajdu, C Horvath, D Kapusi, A Krajczar, K Laszlo, A Sikler, F Vesztergombi, G Beni, N Molnar, J Palinkas, J Szillasi, Z Veszpremi, V Raics, P Trocsanyi, ZL Ujvari, B Bansal, S Beri, SB Bhatnagar, V Jindal, M Kaur, M Kohli, JM Mehta, MZ Nishu, N Saini, LK Sharma, A Sharma, R Singh, AP Singh, JB Singh, SP Ahuja, S Bhattacharya, S Chauhan, S Choudhary, BC Gupta, P Jain, S Jain, S Kumar, A Shivpuri, RK Choudhury, RK Dutta, D Kailas, S Kataria, SK Mohanty, AK Pant, LM Shukla, P Suggisetti, P Aziz, T Guchait, M Gurtu, A Maity, M Majumder, D Majumder, G Mazumdar, K Mohanty, GB Saha, A Sudhakar, K Wickramage, N Banerjee, S Dugad, S Mondal, NK Arfaei, H Bakhshiansohi, H Etesami, SM Fahim, A Hashemi, M Jafari, A Khakzad, M Mohammadi, A Najafabadi, MM Mehdiabadi, SP Safarzadeh, B Zeinali, M Abbrescia, M Barbone, L Calabria, C Colaleo, A Creanza, D De Filippis, N De Palma, M Dimitrov, A Fedele, F Fiore, L Iaselli, G Lusito, L Maggi, G Maggi, M Manna, N Marangelli, B My, S Nuzzo, S Pierro, GA Pompili, A Pugliese, G Romano, F Roselli, G Selvaggi, G Silvestris, L Trentadue, R Tupputi, S Zito, G Abbiendi, G Benvenuti, AC Bonacorsi, D Braibant-Giacomelli, S Capiluppi, P Castro, A Cavallo, FR Cuffiani, M Dallavalle, GM Fabbri, F Fanfani, A Fasanella, D Giacomelli, P Giunta, M Grandi, C Marcellini, S Meneghelli, M Montanari, A Navarria, FL Odorici, F Perrotta, A Rossi, AM Rovelli, T Siroli, G Travaglini, R Albergo, S Cappello, G Chiorboli, M Costa, S Tricomi, A Tuve, C Barbagli, G Broccolo, G Ciulli, V Civinini, C D'Alessandro, R Focardi, E Frosali, S Gallo, E Lenzi, P Meschini, M Paoletti, S Sguazzoni, G Tropiano, A Benussi, L Bianco, S Colafranceschi, S Fabbri, F Piccolo, D Fabbricatore, P Musenich, R Benaglia, A Cerati, GB De Guio, F Di Matteo, L Ghezzi, A Govoni, P Malberti, M Malvezzi, S Martelli, A Massironi, A Menasce, D Miccio, V Moroni, L Paganoni, M Pedrini, D Ragazzi, S Redaelli, N Sala, S de Fatis, TT Tancini, V Buontempo, S Montoya, CAC Cimmino, A De Cosa, A De Gruttola, M Fabozzi, F Iorio, AOM Lista, L Noli, P Paolucci, P Azzi, P Bacchetta, N Bellan, P Bisello, D Branca, A Carlin, R Checchia, P Conti, E De Mattia, M Dorigo, T Dosselli, U Fanzago, F 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Newman-Holmes, C. O'Dell, V. Popescu, S. Pordes, R. Prokofyev, O. Saoulidou, N. Sexton-Kennedy, E. Sharma, S. Soha, A. Spalding, W. J. Spiegel, L. Tan, P. Taylor, L. Tkaczyk, S. Uplegger, L. Vaandering, E. W. Vidal, R. Whitmore, J. Wu, W. Yang, F. Yumiceva, F. Yun, J. C. Acosta, D. Avery, P. Bourilkov, D. Chen, M. Di Giovanni, G. P. Dobur, D. Drozdetskiy, A. Field, R. D. Fisher, M. Fu, Y. Furic, I. K. Gartner, J. Goldberg, S. Kim, B. Klimenko, S. Konigsberg, J. Korytov, A. Kotov, K. Kropivnitskaya, A. Kypreos, T. Matchev, K. Mitselmakher, G. Muniz, L. Pakhotin, Y. Petterson, M. Prescott, C. Remington, R. Schmitt, M. Scurlock, B. Sellers, P. Snowball, M. Wang, D. Yelton, J. Zakaria, M. Ceron, C. Gaultney, V. Kramer, L. Lebolo, L. M. Linn, S. Markowitz, P. Martinez, G. Mesa, D. Rodriguez, J. L. Adams, T. Askew, A. Bochenek, J. Chen, J. Diamond, B. Gleyzer, S. V. Haas, J. Hagopian, S. Hagopian, V. Jenkins, M. Johnson, K. F. Prosper, H. Sekmen, S. Veeraraghavan, V. Baarmand, M. M. Dorney, B. Guragain, S. Hohlmann, M. Kalakhety, H. Ralich, R. Vodopiyanov, I. Adams, M. R. Anghel, I. M. Apanasevich, L. Bai, Y. Bazterra, V. E. Betts, R. R. Callner, J. Cavanaugh, R. Dragoiu, C. Garcia-Solis, E. J. Gerber, C. E. Hofman, D. J. Khalatyan, S. Lacroix, F. O'Brien, C. Shabalina, E. Silvestre, C. Smoron, A. Strom, D. Varelas, N. Akgun, U. Albayrak, E. A. Bilki, B. Cankocak, K. Clarida, W. Duru, F. Lae, C. K. McCliment, E. Merlo, J. -P. Mermerkaya, H. Mestvirishvili, A. Moeller, A. Nachtman, J. Newsom, C. R. Norbeck, E. Olson, J. Onel, Y. Ozok, F. Sen, S. Wetzel, J. Yetkin, T. Yi, K. Barnett, B. A. Blumenfeld, B. Bonato, A. Eskew, C. Fehling, D. Giurgiu, G. Gritsan, A. V. Guo, Z. J. Hu, G. Maksimovic, P. Rappoccio, S. Swartz, M. Tran, N. V. Whitbeck, A. Baringer, P. Bean, A. Benelli, G. Grachov, O. Murray, M. Noonan, D. Radicci, V. Sanders, S. Wood, J. S. Zhukova, V. Bandurin, D. Bolton, T. Chakaberia, I. Ivanov, A. Makouski, M. Maravin, Y. Shrestha, S. Svintradze, I. Wan, Z. Gronberg, J. Lange, D. Wright, D. Baden, A. Boutemeur, M. Eno, S. C. Ferencek, D. Gomez, J. A. Hadley, N. J. Kellogg, R. G. Kirn, M. Lu, Y. Mignerey, A. C. Rossato, K. Rumerio, P. Santanastasio, F. Skuja, A. Temple, J. Tonjes, M. B. Tonwar, S. C. Twedt, E. Alver, B. Bauer, G. Bendavid, J. Busza, W. Butz, E. Cali, I. A. Chan, M. Dutta, V. Everaerts, P. Ceballos, G. Gomez Goncharov, M. Hahn, K. A. Harris, P. Kim, Y. Klute, M. Lee, Y. -J. Li, W. Loizides, C. Luckey, P. D. Ma, T. Nahn, S. Paus, C. Roland, C. Roland, G. Rudolph, M. Stephans, G. S. F. Sumorok, K. Sung, K. Wenger, E. A. Wyslouch, B. Xie, S. Yang, M. Yilmaz, Y. Yoon, A. S. Zanetti, M. Cole, P. Cooper, S. I. Cushman, P. Dahmes, B. De Benedetti, A. Dudero, P. R. Franzoni, G. Haupt, J. Klapoetke, K. Kubota, Y. Mans, J. Rekovic, V. Rusack, R. Sasseville, M. Singovsky, A. Cremaldi, L. M. Godang, R. Kroeger, R. Perera, L. Rahmat, R. Sanders, D. A. Summers, D. Bloom, K. Bose, S. Butt, J. Claes, D. R. Dominguez, A. Eads, M. Keller, J. Kelly, T. Kravchenko, I. Lazo-Flores, J. Lundstedt, C. Malbouisson, H. Malik, S. Snow, G. R. Baur, U. Godshalk, A. Iashvili, I. Kharchilava, A. Kumar, A. Smith, K. Zennamo, J. Alverson, G. Barberis, E. Baumgartel, D. Boeriu, O. Chasco, M. Kaadze, K. Reucroft, S. Swain, J. Wood, D. Zhang, J. Anastassov, A. Kubik, A. Odell, N. Ofierzynski, R. A. Pollack, B. Pozdnyakov, A. Schmitt, M. Stoynev, S. Velasco, M. Won, S. Antonelli, L. Berry, D. Hildreth, M. Jessop, C. Karmgard, D. J. Kolb, J. Kolberg, T. Lannon, K. Luo, W. Lynch, S. Marinelli, N. Morse, D. M. Pearson, T. Ruchti, R. Slaunwhite, J. Valls, N. Warchol, J. Wayne, M. Ziegler, J. Bylsma, B. Durkin, L. S. Gu, J. Killewald, P. Ling, T. Y. Rodenburg, M. Williams, G. Adam, N. Berry, E. Elmer, P. Gerbaudo, D. Halyo, V. Hebda, P. Hunt, A. Jones, J. Laird, E. Pegna, D. Lopes Marlow, D. Medvedeva, T. Mooney, M. Olsen, J. Piroue, P. Saka, H. Stickland, D. Tully, C. Werner, J. S. Zuranski, A. Acosta, J. G. Huang, X. T. Lopez, A. Mendez, H. Oliveros, S. Vargas, J. E. Ramirez Zatserklyaniy, A. Alagoz, E. Barnes, V. E. Bolla, G. Borrello, L. Bortoletto, D. Everett, A. Garfinkel, A. F. Gecse, Z. Gutay, L. Jones, M. Koybasi, O. Laasanen, A. T. Leonardo, N. Liu, C. Maroussov, V. Meier, M. Merkel, P. Miller, D. H. Neumeister, N. Potamianos, K. Shipsey, I. Silvers, D. Svyatkovskiy, A. Yoo, H. D. Zablocki, J. Zheng, Y. Jindal, P. Parashar, N. Boulahouache, C. Cuplov, V. Ecklund, K. M. Geurts, F. J. M. Liu, J. H. Morales, J. Padley, B. P. Redjimi, R. Roberts, J. Zabel, J. Betchart, B. Bodek, A. Chung, Y. S. de Barbaro, P. Demina, R. Eshaq, Y. Flacher, H. Garcia-Bellido, A. Goldenzweig, P. Gotra, Y. Han, J. Harel, A. Miner, D. C. Orbaker, D. Petrillo, G. Vishnevskiy, D. Zielinski, M. Bhatti, A. Demortier, L. Goulianos, K. Lungu, G. Mesropian, C. Yan, M. Atramentov, O. Barker, A. Duggan, D. Gershtein, Y. Gray, R. Halkiadakis, E. Hidas, D. Hits, D. Lath, A. Panwalkar, S. Patel, R. Richards, A. Rose, K. Schnetzer, S. Somalwar, S. Stone, R. Thomas, S. Cerizza, G. Hollingsworth, M. Spanier, S. Yang, Z. C. York, A. Asaadi, J. Eusebi, R. Gilmore, J. Gurrola, A. Kamon, T. Khotilovich, V. Montalvo, R. Nguyen, C. N. Pivarski, J. Safonov, A. Sengupta, S. Tatarinov, A. Toback, D. Weinberger, M. Akchurin, N. Bardak, C. Damgov, J. Jeong, C. Kovitanggoon, K. Lee, S. W. Mane, P. Roh, Y. Sill, A. Volobouev, I. Wigmans, R. Yazgan, E. Appelt, E. Brownson, E. Engh, D. Florez, C. Gabella, W. Johns, W. Kurt, P. Maguire, C. Melo, A. Sheldon, P. Velkovska, J. Arenton, M. W. Balazs, M. Boutle, S. Buehler, M. Conetti, S. Cox, B. Francis, B. Hirosky, R. Ledovskoy, A. Lin, C. Neu, C. Patel, T. Yohay, R. Gollapinni, S. Harr, R. Karchin, P. E. Loggins, V. Mattson, M. Milstene, C. Sakharov, A. Anderson, M. Bachtis, M. Bellinger, J. N. Carlsmith, D. Dasu, S. Efron, J. Gray, L. Grogg, K. S. Grothe, M. Hall-Wilton, R. Herndon, M. Klabbers, P. Klukas, J. Lanaro, A. Lazaridis, C. Leonard, J. Liu, J. Lomidze, D. Loveless, R. Mohapatra, A. Parker, W. Reeder, D. Ross, I. Savin, A. Smith, W. H. Swanson, J. Weinberg, M. CA CMS Collaboration TI Observation of long-range, near-side angular correlations in proton-proton collisions at the LHC SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE Hadron-Hadron Scattering ID COLLABORATION; ENERGIES; FLOW AB Results on two-particle angular correlations for charged particles emitted in proton-proton collisions at center-of-mass energies of 0.9, 2.36, and 7TeV are presented, using data collected with the CMS detector over a broad range of pseudorapidity (eta) and azimuthal angle (phi). Short-range correlations in Delta(eta), which are studied in minimum bias events, are characterized using a simple "independent cluster" parametrization in order to quantify their strength (cluster size) and their extent in eta (cluster decay width). Long-range azimuthal correlations are studied differentially as a function of charged particle multiplicity and particle transverse momentum using a 980 nb(-1) data set at 7TeV. In high multiplicity events, a pronounced structure emerges in the two-dimensional correlation function for particle pairs with intermediate p(T) of 1-3 GeV/c, 2.0 1 mu m) inside a bulk (similar to 1 mm diameter) magnetite-particle-mineral oil ferrofluid sample. The results show that the magnetite volume fraction is not constant within the structures and on average is considerably less than a random sphere packing model. (C) 2010 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA. RP Lee, WK (reprint author), Argonne Natl Lab, Adv Photon Source, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM wklee@aps.anl.gov NR 37 TC 6 Z9 6 U1 2 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD SEP PY 2010 VL 322 IS 17 BP 2525 EP 2528 DI 10.1016/j.jmmm.2010.03.012 PG 4 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA 596QR UT WOS:000277700600015 ER PT J AU Staruch, M Stan, L Ronning, F Thompson, JD Jia, QX Yoon, J Wang, H Jain, M AF Staruch, M. Stan, L. Ronning, F. Thompson, J. D. Jia, Q. X. Yoon, J. Wang, H. Jain, M. TI Magnetotransport properties of epitaxial Pr0.5Ca0.5MnO3 films grown by a solution technique SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article DE Charge ordering; Melting; Antiferromagnetic; Pr0.5Ca0.5MnO3; Manganite; Magnetoresistance ID INSULATOR-METAL-TRANSITIONS; THIN-FILMS; MAGNETIC-FIELD; TRANSPORT; STRAIN; STATE; ORDER AB Epitaxial Pr0.5Ca0.5MnO3 films have been synthesized on (0 0 1) SrTiO3 substrate using a chemical solution deposition technique and two-step post-annealing process. The zero field resistivity of the films shows semiconducting behavior and a characteristic of charge ordering is observed at 230 K. The resistivity of the 10 nm film did not show any effect with the magnetic field. However, melting of charge ordering was observed for the 120 nm film at an applied magnetic field of 4 T. Large decrease in the resistivity of the 120 nm film (< 100 K) resulted in magnetoresistance of nearly -100% at 75 K. (C) 2010 Elsevier B.V. All rights reserved. C1 [Staruch, M.; Jain, M.] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA. [Stan, L.; Ronning, F.; Thompson, J. D.; Jia, Q. X.] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA. [Yoon, J.; Wang, H.] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA. [Jain, M.] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA. RP Jain, M (reprint author), Univ Connecticut, Dept Phys, Storrs, CT 06269 USA. EM mjain@phys.uconn.edu RI Jia, Q. X./C-5194-2008; Wang, Haiyan/P-3550-2014; Staruch, Margo/M-9260-2015; OI Wang, Haiyan/0000-0002-7397-1209; Staruch, Margo/0000-0003-3088-2553; Ronning, Filip/0000-0002-2679-7957; Jain, Menka/0000-0002-2264-6895 FU University of Connecticut Foundation; U.S. Department of Energy FX We gratefully acknowledge the support of the Large Grant from the University of Connecticut Foundation and U.S. Department of Energy through the LANL/LDRD Program for this work. NR 22 TC 1 Z9 1 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 EI 1873-4766 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD SEP PY 2010 VL 322 IS 18 BP 2708 EP 2711 DI 10.1016/j.jmmm.2010.04.012 PG 4 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA 604VC UT WOS:000278305600015 ER PT J AU Cambel, V Elias, P Gregusova, D Martaus, J Fedor, J Karapetrov, G Novosad, V AF Cambel, V. Elias, P. Gregusova, D. Martaus, J. Fedor, J. Karapetrov, G. Novosad, V. TI Magnetic elements for switching magnetization magnetic force microscopy tips SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article DE Magnetic force microscopy; Micromagnetic calculations; Switching field ID ELLIPTIC PERMALLOY ELEMENTS; RESOLUTION; FIELD; NANOSTRUCTURES; LAYER AB Using combination of micromagnetic calculations and magnetic force microscopy (MFM) imaging we find optimal parameters for novel magnetic tips suitable for switching magnetization MFM. Switching magnetization MFM is based on two-pass scanning atomic force microscopy with reversed tip magnetization between the scans. Within the technique the sum of the scanned data with reversed tip magnetization depicts local atomic forces. while their difference maps the local magnetic forces. Here we propose the design and calculate the magnetic properties of tips suitable for this scanning probe technique. We find that for best performance the spin-polarized tips must exhibit low magnetic moment, low switching fields, and single-domain state at remanence. The switching field of such tips is calculated and optimum shape of the Permalloy elements for the tips is found. We show excellent correspondence between calculated and experimental results for Py elements. (C) 2010 Elsevier B.V. All rights reserved. C1 [Cambel, V.; Elias, P.; Gregusova, D.; Martaus, J.; Fedor, J.] Slovak Acad Sci, Inst Elect Engn, Bratislava 84104, Slovakia. [Karapetrov, G.; Novosad, V.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Cambel, V (reprint author), Slovak Acad Sci, Inst Elect Engn, Dubravska Cesta 9, Bratislava 84104, Slovakia. EM vladimir.cambel@savba.sk RI Novosad, Valentyn/C-2018-2014; Karapetrov, Goran/C-2840-2008; Novosad, V /J-4843-2015 OI Karapetrov, Goran/0000-0003-1113-0137; FU Slovak APVV Agency [APVV-51-045705]; Centre of Excellence at the IEE SAS [VVCE-0058-07]; UChicago Argonne, LLC, Operator of Argonne National Laboratory ("Argonne") FX The work was sponsored by the Slovak APVV Agency, project APVV-51-045705, and by the APVV project VVCE-0058-07 Centre of Excellence at the IEE SAS. G.K. and V.N. acknowledge support 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. NR 37 TC 9 Z9 10 U1 2 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD SEP PY 2010 VL 322 IS 18 BP 2715 EP 2721 DI 10.1016/j.jmmm.2010.04.014 PG 7 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA 604VC UT WOS:000278305600017 ER PT J AU Lesuer, DR Syn, CK Sherby, OD AF Lesuer, D. R. Syn, C. K. Sherby, O. D. TI Nano-scale strengthening from grains, subgrains, and particles in Fe-based alloys SO JOURNAL OF MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT 6th International Symposium on Ultrafine Grained Materials CY FEB 14-18, 2010 CL Seattle, WA SP Minerals, Metals & Mat Soc AB Nano-scale strengthening has been studied for Fe and Fe-based alloys and found to be a function of grains, subgrains, and particles. In Fe-C/O alloys, these microstructural features can result from phase transformations and deformation processes. The relationships between these structural features and strength have been quantified and the limitations established. The relationships were shown to apply equally well to structures produced by deformation and quenching. The major contributors to strength were carbide and oxide particles. Particles, grains, and subgrains were shown to provide significantly higher strengthening than contributions from solid solution effects. C1 [Lesuer, D. R.; Syn, C. K.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Sherby, O. D.] Stanford Univ, Stanford, CA 94305 USA. RP Lesuer, DR (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM lesuer1@llnl.gov NR 34 TC 5 Z9 5 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD SEP PY 2010 VL 45 IS 17 SI SI BP 4889 EP 4894 DI 10.1007/s10853-010-4391-x PG 6 WC Materials Science, Multidisciplinary SC Materials Science GA 622RZ UT WOS:000279684400046 ER PT J AU Lizarraga, R Holmstrom, E Amezaga, A Bock, N Peery, T Menendez-Proupin, E Giannozzi, P AF Lizarraga, R. Holmstroem, E. Amezaga, A. Bock, N. Peery, T. Menendez-Proupin, E. Giannozzi, P. TI Core-level shift analysis of amorphous CdTeO (x) materials SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID THIN-FILMS; OXIDE; SPECTROSCOPY; PLASMA AB We show the importance of considering the detailed local distributions of oxygen atoms around tellurium in CdTeO (x) glasses when interpreting X-ray photoemission experiments. We perform first principles calculations of core-level shifts that are used to compute X-ray photo-electron spectra. The core-level shifts are investigated by means of atomic density of states and a structural Voronoi analysis. We find that the dominating effect on the atomic core-level shift of tellurium is charge redistribution due to the oxygen atoms. There is however also a prominent effect from the geometrical arrangement of the oxygen neighbors. C1 [Lizarraga, R.; Holmstroem, E.] Univ Austral Chile, Fac Ciencias, Inst Fis, Valdivia, Chile. [Amezaga, A.] Univ Austral Chile, Fac Ciencias, Inst Matemat, Valdivia, Chile. [Bock, N.; Peery, T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Menendez-Proupin, E.] Univ Chile, Fac Ciencias, Dept Fis, Santiago 7800024, Chile. [Giannozzi, P.] Univ Udine, Dept Phys, I-33100 Udine, Italy. RP Lizarraga, R (reprint author), Univ Austral Chile, Fac Ciencias, Inst Fis, Casilla 567, Valdivia, Chile. EM raquellizarraga@uach.cl; eholmstrom@uach.cl; aamezaga@uach.cl; nbock@lanl.gov; tpeery@lanl.gov; emenendez@uchile.cl; paolo.giannozzi@uniud.it RI Menendez-Proupin, Eduardo/A-6026-2010; Holmstrom, Erik/A-5308-2009; OI Holmstrom, Erik/0000-0002-1198-3861; Giannozzi, Paolo/0000-0002-9635-3227 FU DID (UACH) [S-2008-42, SR-2008-0, S-2008-51]; PIA (CONICYT) [ACI-52, ACT/ADI-24]; FONDECYT [11070115, 11080259] FX This work was supported by DID (UACH) grant S-2008-42 and PIA (CONICYT) grants ACI-52 and ACT/ADI-24. EH and RL also acknowledge support from FONDECYT projects 11070115 and 11080259, DID (UACH) grants SR-2008-0 and S-2008-51. NR 18 TC 3 Z9 3 U1 1 U2 5 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0022-2461 EI 1573-4803 J9 J MATER SCI JI J. Mater. Sci. PD SEP PY 2010 VL 45 IS 18 BP 5071 EP 5076 DI 10.1007/s10853-010-4419-2 PG 6 WC Materials Science, Multidisciplinary SC Materials Science GA 627VA UT WOS:000280070400027 ER PT J AU Bravyi, S Hastings, MB Michalakis, S AF Bravyi, Sergey Hastings, Matthew B. Michalakis, Spyridon TI Topological quantum order: Stability under local perturbations SO JOURNAL OF MATHEMATICAL PHYSICS LA English DT Article DE lattice theory; quantum computing; quantum theory; spin Hamiltonians; symmetry; topology ID GROUND-STATES; HAMILTONIANS; ANYONS AB We study zero-temperature stability of topological phases of matter under weak time-independent perturbations. Our results apply to quantum spin Hamiltonians that can be written as a sum of geometrically local commuting projectors on a D-dimensional lattice with certain topological order conditions. Given such a Hamiltonian H(0), we prove that there exists a constant threshold is an element of>0 such that for any perturbation V representable as a sum of short-range bounded-norm interactions, the perturbed Hamiltonian H=H(0)+is an element of V has well-defined spectral bands originating from low-lying eigenvalues of H(0). These bands are separated from the rest of the spectra and from each other by a constant gap. The band originating from the smallest eigenvalue of H(0) has exponentially small width (as a function of the lattice size). Our proof exploits a discrete version of Hamiltonian flow equations, the theory of relatively bounded operators, and the Lieb-Robinson bound. (C) 2010 American Institute of Physics. [doi:10.1063/1.3490195] C1 [Bravyi, Sergey] IBM Watson Res Ctr, Yorktown Hts, NY 10594 USA. [Hastings, Matthew B.] Univ Calif Santa Barbara, Microsoft Res Stn Q, CNSI Bldg, Santa Barbara, CA 93106 USA. [Michalakis, Spyridon] LANL, T4 & CNLS, Los Alamos, NM 87544 USA. RP Bravyi, S (reprint author), IBM Watson Res Ctr, Yorktown Hts, NY 10594 USA. EM sbravyi@us.ibm.com FU DARPA [HR0011-09-C-0047]; NSF [DMS-07-57581]; DOE [DE-AC52-06NA25396] FX We thank Barbara Terhal and David DiVincenzo for the useful discussions. Part of this work was done while S. B. and S. M. were visiting the Erwin Schrodinger International Institute for Mathematical Physics at Vienna. S. B. was partially supported by the DARPA QUEST program under Contract No. HR0011-09-C-0047. S. M. thanks the organizers of the program on "Quantum Information Science" at the KITP at UC Santa Barbara, where part of this work was completed. S. M. was supported by NSF Grant No. DMS-07-57581 and DOE Contract No. DE-AC52-06NA25396. NR 24 TC 119 Z9 119 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0022-2488 J9 J MATH PHYS JI J. Math. Phys. PD SEP PY 2010 VL 51 IS 9 AR 093512 DI 10.1063/1.3490195 PG 33 WC Physics, Mathematical SC Physics GA 657SS UT WOS:000282433200045 ER PT J AU Ramani, K Ramanujan, D Bernstein, WZ Zhao, F Sutherland, J Handwerker, C Choi, JK Kim, H Thurston, D AF Ramani, Karthik Ramanujan, Devarajan Bernstein, William Z. Zhao, Fu Sutherland, John Handwerker, Carol Choi, Jun-Ki Kim, Harrison Thurston, Deborah TI Integrated Sustainable Life Cycle Design: A Review SO JOURNAL OF MECHANICAL DESIGN LA English DT Review DE sustainable design; eco-design; product design; manufacturing; supply chain ID SUPPLY-CHAIN MANAGEMENT; SOLID-WASTE MANAGEMENT; DECISION-MAKING; PRODUCT DESIGN; ENVIRONMENTAL-MANAGEMENT; MARKETING-STRATEGY; LOGISTICS NETWORKS; REVERSE LOGISTICS; UNITED-STATES; MODEL AB Product design is one of the most important sectors influencing global sustainability, as almost all the products consumed by people are outputs of the product development process. In particular, early design decisions can have a very significant impact on sustainability. These decisions not only relate to material and manufacturing choices but have a far-reaching effect on the product's entire life cycle, including transportation, distribution, and end-of-life logistics. However, key challenges have to be overcome to enable eco-design methods to be applicable in early design stages. Lack of information models, semantic interoperability, methods to influence eco-design thinking in early stages, measurement science and uncertainty models in eco-decisions, and ability to balance business decisions and eco-design methodology are serious impediments to realizing sustainable products and services. Therefore, integrating downstream life cycle data into eco-design tools is essential to achieving true sustainable product development. Our review gives an overview of related research and positions early eco-design tools and decision support as a key strategy for the future. By merging sustainable thinking into traditional design methods, this review provides a framework for ongoing research, as well as encourages research collaborations among the various communities interested in sustainable product realization. [DOI: 10.1115/1.4002308] C1 [Ramani, Karthik] Purdue Univ, Sch Mech Engn, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA. [Ramani, Karthik; Zhao, Fu; Sutherland, John] Purdue Univ, Div Environm & Ecol Engn, W Lafayette, IN 47907 USA. [Handwerker, Carol] Purdue Univ, Sch Mat Sci & Engn, W Lafayette, IN 47907 USA. [Choi, Jun-Ki] Brookhaven Natl Lab, Dept Energy Sci & Technol, Upton, NY 11973 USA. [Kim, Harrison; Thurston, Deborah] Univ Illinois, Dept Ind & Enterprise Syst Engn, Urbana, IL 61801 USA. RP Ramani, K (reprint author), Purdue Univ, Sch Mech Engn, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA. EM ramani@purdue.edu RI Choi, Jun-Ki/I-2576-2012 FU National Science Foundation [EEC0935074, CMMI0726934] FX The authors, F. Z. and K. R., would like to acknowledge funding from National Science Foundation Grant No. EEC0935074 (Enabling Project Based Learning for Eco-Design: Method Development and Curriculum Reform). The authors, H. K. and D. T., would like to acknowledge funding from National Science Foundation Grant No. CMMI0726934 (Enterprise Systems for Product Portfolio Design). The authors acknowledge contributions by Vijit Pandey and Minjung Kwak. NR 217 TC 65 Z9 66 U1 8 U2 88 PU ASME PI NEW YORK PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA SN 1050-0472 J9 J MECH DESIGN JI J. Mech. Des. PD SEP PY 2010 VL 132 IS 9 AR 091004 DI 10.1115/1.4002308 PG 15 WC Engineering, Mechanical SC Engineering GA 652TR UT WOS:000282033300006 ER PT J AU Phinney, LM Spletzer, MA Baker, MS Serrano, JR AF Phinney, Leslie M. Spletzer, Matthew A. Baker, Michael S. Serrano, Justin R. TI Effects of mechanical stress on thermal microactuator performance SO JOURNAL OF MICROMECHANICS AND MICROENGINEERING LA English DT Article ID RAMAN-SPECTROSCOPY; MICROSYSTEMS; ACTUATORS; SILICON; DESIGN; TIME; MEMS AB Mechanical stresses on microsystems die induced by packaging processes and varying environmental conditions can affect the performance and reliability of microsystems devices. Thermal microactuators and stress gauges were fabricated using the Sandia five-layer SUMMiT surface micromachining process and diced to fit in a four-point bending stage. The sample dies were tested under tension and compression at stresses varying from -250 MPa, compressive, to 200 MPa, tensile. Stress values were validated by both on-die stress gauges and micro-Raman spectroscopy measurements. Thermal microactuator displacement is measured for applied currents up to 35 mA as the mechanical stress is systematically varied. Increasing tensile stress decreases the initial actuator displacement. In most cases, the incremental thermal microactuator displacement from the zero current value for a given applied current decreases when the die is stressed. Numerical model predictions of thermal microactuator displacement versus current agree with the experimental results. Quantitative information on the reduction in thermal microactuator displacement as a function of stress provides validation data for MEMS models and can guide future designs to be more robust to mechanical stresses. C1 [Phinney, Leslie M.; Spletzer, Matthew A.; Baker, Michael S.; Serrano, Justin R.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Phinney, LM (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM lmphinn@sandia.gov; masplet@sandia.gov; msbaker@sandia.gov; jrserra@sandia.gov FU US Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX Sandia National Laboratories is a multi-program laboratory 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. The authors appreciate the experimental assistance of Allen Gorby and design and analysis of the stress gauges by Jon Wittwer. NR 22 TC 4 Z9 4 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0960-1317 J9 J MICROMECH MICROENG JI J. Micromech. Microeng. PD SEP PY 2010 VL 20 IS 9 AR 095011 DI 10.1088/0960-1317/20/9/095011 PG 7 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Instruments & Instrumentation; Physics, Applied SC Engineering; Science & Technology - Other Topics; Instruments & Instrumentation; Physics GA 644SC UT WOS:000281398800011 ER PT J AU Bobrovnik, SA Demchenko, M Komisarenko, S Stevens, F AF Bobrovnik, Sergei A. Demchenko, Miroslava Komisarenko, Sergei Stevens, Fred TI Traditional ELISA methods for antibody affinity determination fail to reveal the presence of low affinity antibodies in antisera: an alternative approach SO JOURNAL OF MOLECULAR RECOGNITION LA English DT Article DE antibody; affinity; antisera; polyclonality ID SURFACE-PLASMON RESONANCE; MONOCLONAL-ANTIBODIES; NATURAL AUTOANTIBODIES; BIOSENSOR AB Traditionally used methods of antibody affinity determination either by ELISA or by the surface plasmon resonance technique do not allow detection of the presence of low-affinity antibodies in samples of high-affinity antibodies. In this paper we demonstrate the possibility to reveal their presence and to determine the affinities of both categories of antibodies as well as the ratio of their concentrations. This is especially important since by using traditional methods for antibody affinity evaluation the admixture of low-affinity antibodies in a sample diminishes the accuracy in determination of specific antibody affinity. In addition, the presence of an admixture of low-affinity antibodies may be an important biological characteristic of the system under study; their revelation and the evaluation of their binding parameters may be valuable in many cases for obtaining a more complete characterization of the binding properties of the multiple antibodies generated in an immune response. Copyright (C) 2009 John Wiley & Sons, Ltd. C1 [Bobrovnik, Sergei A.; Demchenko, Miroslava; Komisarenko, Sergei] AV Palladin Biochem Inst, Dept Mol Immunol, UA-01601 Kiev, Ukraine. [Stevens, Fred] Argonne Natl Lab, Biosci Div, Chicago, IL USA. RP Bobrovnik, SA (reprint author), AV Palladin Biochem Inst, Dept Mol Immunol, 9 Leontovich, UA-01601 Kiev, Ukraine. EM s-bobrov@bk.ru NR 29 TC 3 Z9 3 U1 3 U2 8 PU JOHN WILEY & SONS LTD PI CHICHESTER PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND SN 0952-3499 J9 J MOL RECOGNIT JI J. Mol. Recognit. PD SEP-OCT PY 2010 VL 23 IS 5 BP 448 EP 456 DI 10.1002/jmr.1011 PG 9 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA 647AB UT WOS:000281586500005 PM 20033900 ER PT J AU Mariani, RD Vaden, D AF Mariani, Robert D. Vaden, DeeEarl TI Modeled salt density for nuclear material estimation in the treatment of spent nuclear fuel SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article ID URANIUM AB Spent metallic nuclear fuel is being treated in a pyrometallurgical process that includes electrorefining the uranium metal in molten eutectic LiCl-KCl as the supporting electrolyte We report a model for determining the density of the molten salt Material balances account for the net mass of salt and for the mass of actinides present It was necessary to know the molten salt density, but difficult to measure It was also decided to model the salt density for the initial treatment operations. The model assumes that volumes are additive for the ideal molten salt solution as a starting point, subsequently, a correction factor for the lanthanides and actinides was developed After applying the correction factor, the percent difference between the net salt mass in the electrorefiner and the resulting modeled salt mass decreased from more than 4.0% to approximately 0 1% As a result, there is no need to measure the salt density at 500 degrees C for inventory operations, the model for the salt density is found to be accurate. (C) 2010 Elsevier B.V All rights reserved C1 [Mariani, Robert D.; Vaden, DeeEarl] Idaho Natl Lab, Pyroproc Technol Dept, Idaho Falls, ID 83415 USA. RP Vaden, D (reprint author), Idaho Natl Lab, Pyroproc Technol Dept, POB 1625, Idaho Falls, ID 83415 USA. NR 22 TC 4 Z9 4 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 1 PY 2010 VL 404 IS 1 BP 25 EP 32 DI 10.1016/j.jnucmat.2010.06.022 PG 8 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 645VQ UT WOS:000281494700005 ER PT J AU de Almeida, VF Hunt, RD Collins, JL AF de Almeida, Valmor F. Hunt, Rodney D. Collins, Jack L. TI Pneumatic drop-on-demand generation for production of metal oxide microspheres by internal gelation SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article AB Drop-on-demand generation is an alternative approach to the traditional vibrating nozzle used for the production of nuclear fuel microspheres via the internal gelation method We integrated a low-cost pneumatic setup and demonstrated that the drop-on-demand approach has some advantages, such as low inventory of feed solution (attractive for laboratory-scale research), improved drop diameter control, reproducibility, scale-up to desired throughput by simple multiplication of the number of dispensing units, and simple remote operation. However, limitations on reproducibility and drop diameter control still exist due to the intrinsic variation of physical properties, viscosity, and dispensing-tip wettability during the internal gelation process These adverse effects can be mitigated, to a certain extent, by carefully controlling the temperature of the feed as uniformly as possible We validated the drop-on-demand generation method by producing solid kernels of yttrium-stabilized zirconia and soft gel microspheres of iron hydroxide. In addition, we have measured the diameter change at each principal process stage Based on the observed gas entrainment/absorption in the gel spheres, we conjectured that aging and washing are likely the critical stages determining the final precision to which microspheres can be made. Finally, we comment on potential improvements that add robustness to the method for handling other metal precursors in aqueous solutions. (C) 2010 Elsevier B.V All rights reserved C1 [de Almeida, Valmor F.; Hunt, Rodney D.] Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. [Collins, Jack L.] Harbach Engn & Solut, Dayton, OH 45458 USA. RP de Almeida, VF (reprint author), Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. RI de Almeida, Valmor/P-5498-2016 OI de Almeida, Valmor/0000-0003-0899-695X FU US Department of Energy through the Office of Nuclear Energy, Science and Technology's Deep-Burn Development [DE-AC05-00OR22725]; UT-Battelle, LLC; Nuclear Science and Technology Division FX This work was sponsored by the US Department of Energy through the Office of Nuclear Energy, Science and Technology's Deep-Burn Development Project under contract DE-AC05-00OR22725 with UT-Battelle, LLC. The work was performed at the ORNL under the auspices of the Nuclear Science and Technology Division. NR 7 TC 6 Z9 6 U1 2 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 1 PY 2010 VL 404 IS 1 BP 44 EP 49 DI 10.1016/j.jnucmat.2010.06.024 PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 645VQ UT WOS:000281494700007 ER PT J AU Zhang, J Hosemann, P Maloy, S AF Zhang, J. Hosemann, P. Maloy, S. TI Models of liquid metal corrosion SO JOURNAL OF NUCLEAR MATERIALS LA English DT Review ID BISMUTH EUTECTIC SYSTEMS; OXIDATION MECHANISM; STEEL CORROSION; MASS-TRANSFER; MOLTEN LEAD; SODIUM; ALLOYS; FLOW; LOOPS; VOLATILIZATION AB In the present study, models for liquid metal corrosion are reviewed and their applications in nuclear reactor engineering are discussed The paper presents mathematical analysis of liquid metal corrosion, including species transport in solid steels, in flowing liquid metals, and mass exchange at liquid/solid interface The survey illustrates the mechanisms of the liquid metal corrosion and sets up a system to calculate the corrosion rate and to study the corrosion species distributions in the solid and liquid metal/alloys Both light liquid metal/alloy (sodium and sodium-potassium) and heavy liquid metal/alloy (liquid lead and lead-bismuth) are considered Oxygen effects on liquid metal corrosion are also discussed For liquid sodium and sodium-potassium the corrosion rate increases with increasing oxygen concentration, while for liquid lead and lead-bismuth it is reasonable to produce a protective oxide layer using an oxygen control technique which can mitigate the corrosion rate significantly Finally, the corrosion-oxidation interaction in liquid lead and lead-bismuth are discussed (C) 2010 Published by Elsevier B V C1 [Zhang, J.; Hosemann, P.; Maloy, S.] Los Alamos Natl Lab, Decis & Applicat Div, Los Alamos, NM 87544 USA. RP Zhang, J (reprint author), Los Alamos Natl Lab, Decis & Applicat Div, MS K-575, Los Alamos, NM 87544 USA. RI Zhang, Jinsuo/H-4717-2012; OI Zhang, Jinsuo/0000-0002-3412-7769; Hosemann, Peter/0000-0003-2281-2213; Maloy, Stuart/0000-0001-8037-1319 FU Los Alamos National Laboratory; University of Navada at Las Vegas FX The author is grateful to Dr N. Li at the Los Alamos National Laboratory and Dr. A Hechanova at the University of Navada at Las Vegas for the initial support of this study. NR 41 TC 29 Z9 30 U1 1 U2 49 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 1 PY 2010 VL 404 IS 1 BP 82 EP 96 DI 10.1016/j.jnucmat.2010.05.024 PG 15 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 645VQ UT WOS:000281494700013 ER PT J AU Aklamati, EK Mulenga, M Dueker, SR Buchholz, BA Peerson, JM Kafwembe, E Brown, KH Haskell, MJ AF Aklamati, Emmanuel K. Mulenga, Modest Dueker, Stephen R. Buchholz, Bruce A. Peerson, Janet M. Kafwembe, Emmanuel Brown, Kenneth H. Haskell, Marjorie J. TI Accelerator Mass Spectrometry Can Be Used to Assess Vitamin A Metabolism Quantitatively in Boys in a Community Setting SO JOURNAL OF NUTRITION LA English DT Article ID RETINOL; INFECTION; PLASMA; DYNAMICS; CHILDREN; HUMANS; ADULT; WOMEN; LIVER AB A survey indicated that high-dose vitamin A (HD-VA) supplements had no apparent effect on vitamin A (VA) status, assessed by serum retinol concentrations, of Zambian children < 5 y of age. To explore possible reasons for the lack of response, we quantified absorption, retention, and urinary elimination of either a single HD-VA supplement (209.8 mu mol; 60 mg) or a smaller dose of stable isotope (SI)-labeled VA (17.5 mu mol; 5 mg), which was used to estimate VA pool size, in 3- to 4-y-old Zambian boys In = 4 for each VA dose). A tracer dose of [(14)C(2)]-labeled VA (0.925 kBq; 25 nCi) was coadministered with the HD-VA supplement or SI-labeled VA, and 24-h stool and urine samples were collected for 3 and 7 consecutive days, respectively, and 24-h urine samples at 4 later time points. Accelerator MS was used to quantify (14)C in stool and urine. Estimates of absorption, retention, and the urinary elimination rate (UER) were 83.8 +/- 7.1%, 76.3 +/- 6.7%, and 1.9 +/- 0.6%/d, respectively, for the HD-VA supplement and 76.5 +/- 9.5%, 71.1 +/- 9.4%, and 1.8 +/- 1.2%/d, respectively, for the SI-labeled VA. Mean estimates of absorption, retention, and the UER did not differ by size of the VA dose administered. Estimated absorption and retention were negatively associated with reported fever (r = -0.83; P = 0.011). The HD-VA supplement and SI-labeled VA were adequately absorbed, retained, and utilized in apparently healthy Zambian preschool-age boys; absorption and retention may be affected by recent fever. J. Nutr. 140: 1588-1594, 2010. C1 [Aklamati, Emmanuel K.; Peerson, Janet M.; Brown, Kenneth H.; Haskell, Marjorie J.] Univ Calif Davis, Program Int & Community Nutr, Davis, CA 95616 USA. [Aklamati, Emmanuel K.; Peerson, Janet M.; Brown, Kenneth H.; Haskell, Marjorie J.] Univ Calif Davis, Dept Nutr, Davis, CA 95616 USA. [Mulenga, Modest; Kafwembe, Emmanuel] Ndola Cent Hosp, Trop Dis Res Ctr, Ndola 50100, Zambia. [Dueker, Stephen R.] Vitalea Sci Inc, Davis, CA 95618 USA. [Buchholz, Bruce A.] Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA. RP Haskell, MJ (reprint author), Univ Calif Davis, Program Int & Community Nutr, Davis, CA 95616 USA. EM mjhaskell@ucdavis.edu FU United States Agency for International Development/CDC; Bristol Myers Squibb; NIH/NCRR [13461]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX Supported by the United States Agency for International Development/CDC, the Bristol Myers Squibb Freedom to Discover program, and NIH/NCRR 13461, and performed in part under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. Dr. Michael Green (Pennsylvania State University) provided the [14C2]-labeled vitamin A as a gift. NR 22 TC 13 Z9 13 U1 0 U2 3 PU AMER SOC NUTRITIONAL SCIENCE PI BETHESDA PA 9650 ROCKVILLE PIKE, RM L-2407A, BETHESDA, MD 20814 USA SN 0022-3166 J9 J NUTR JI J. Nutr. PD SEP PY 2010 VL 140 IS 9 BP 1588 EP 1594 DI 10.3945/jn.110.125500 PG 7 WC Nutrition & Dietetics SC Nutrition & Dietetics GA 642KE UT WOS:000281210800009 PM 20660280 ER PT J AU Geernaert, GL AF Geernaert, G. L. TI Normalizing Air-Sea Flux Coefficients for Horizontal Homogeneity, Stationarity, and Neutral Stratification SO JOURNAL OF PHYSICAL OCEANOGRAPHY LA English DT Article ID ATMOSPHERIC SURFACE-LAYER; STRESS AB Monin-Obukhov similarity (MOS) theory is routinely applied over the ocean to describe surface layer profiles of wind speed, temperature, and gas concentrations. Using this theory, fluxes are in turn estimated based on the best available parameterizations of normalized flux coefficients: for example, neutral flux coefficients. Flux coefficients can vary with environmental conditions. Because it is generally assumed that the domain of interest must be characterized by spatially homogeneous and steady-state conditions, systematic violations of the assumptions may lead to significant uncertainties in flux estimates. In this paper, the author has extended MOS theory to accommodate nonstationarity and spatial inhomogeneity in the representation of the normalized drag coefficient, Stanton number, and Dalton number. The author illustrates the importance of his theoretical extension, based on a reexamination of a historical air-sea interaction dataset obtained from the North Sea. C1 [Geernaert, G. L.] Los Alamos Natl Lab, Inst Geophys & Planetary Phys, Los Alamos, NM USA. RP Geernaert, GL (reprint author), US DOE, Climate & Environm Sci Div, 1000 Independence Ave SW, Washington, DC 20585 USA. EM gerald.geernaert@science.doe.gov FU Laboratory Directed Research and Development Program of Los Alamos National Laboratory FX The author acknowledges support from the Laboratory Directed Research and Development Program of Los Alamos National Laboratory, in performing this research. Valuable suggestions for improvement were provided by two anonymous reviewers, and they are gratefully acknowledged. NR 17 TC 0 Z9 0 U1 0 U2 1 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0022-3670 J9 J PHYS OCEANOGR JI J. Phys. Oceanogr. PD SEP PY 2010 VL 40 IS 9 BP 2148 EP 2158 DI 10.1175/2010JPO4407.1 PG 11 WC Oceanography SC Oceanography GA 654VK UT WOS:000282198900014 ER PT J AU Andraka, B Rotundu, CR Kumar, P Tsujii, H AF Andraka, B. Rotundu, C. R. Kumar, P. Tsujii, H. TI Investigation of the heavy fermion state and superconductivity in Pr1-xLaxOs4Sb12 by the upper critical field slope at T-c SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID TEMPERATURE SPECIFIC-HEAT; PROS4SB12 AB Measurements of the upper critical field H-c2 near T-c of Pr1-xLaxOs4Sb12 were performed by specific heat. The results support the hypothesis of a non-single-ion origin of m* enhancement in PrOs4Sb12, derived from the analysis of the C/T discontinuity at T-c. Both sets of measurements indicate the existence of a crossover concentration, x(cr) approximate to 0.2-0.3, separating heavy fermion-like alloys (x < x(cr)) from normal metals (x > x(cr)). Heavy fermion-like alloys exhibit field-induced long-range antiferro-quadrupolar (AFQ) anomalies in the specific heat, while those with x > x(cr) do not. The curvature in H-c2 versus T near T-c, observed in different measurements on pure PrOs4Sb12, is sample-and method-dependent. C1 [Andraka, B.; Kumar, P.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA. [Rotundu, C. R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Tsujii, H.] Kanazawa Univ, Fac Educ, Dept Phys, Kanazawa, Ishikawa 9201192, Japan. RP Andraka, B (reprint author), Univ Florida, Dept Phys, POB 118440, Gainesville, FL 32611 USA. EM andraka@phys.ufl.edu OI Rotundu, Costel/0000-0002-1571-8352 FU Department of Energy [DE-FG02-99ER45748] FX This work was supported by the Department of Energy, grant No. DE-FG02-99ER45748. NR 19 TC 1 Z9 1 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD SEP 1 PY 2010 VL 22 IS 34 AR 345701 DI 10.1088/0953-8984/22/34/345701 PG 5 WC Physics, Condensed Matter SC Physics GA 637VQ UT WOS:000280847200020 PM 21403262 ER PT J AU Porta, M Lookman, T Saxena, A AF Porta, Marcel Lookman, Turab Saxena, Avadh TI Effects of criticality and disorder on piezoelectric properties of ferroelectrics SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID SINGLE-CRYSTALS; ELECTROMECHANICAL RESPONSE; BARIUM-TITANATE AB The piezoelectric response of BaTiO3 is studied in the vicinity of the cubic to tetragonal phase transition, as a function of temperature and the applied electric field in the polar direction. We also investigate the influence of disorder. In the clean limit we obtain the divergence of the piezoelectric tensor at the critical point. The effect of a small amount of disorder is to translate the critical point in the temperature-electric field phase diagram. For large values of the disorder, the paraelectric to ferroelectric phase transition becomes diffuse but a maximum of the piezoelectric tensor is still obtained even though the divergence of the piezoelectric response is lost. These results are in agreement with experimental observations for the relaxor ferroelectric Pb(Mg1/3Nb2/3)O-3-PbTiO3. We use a Ginzburg-Landau model which explicitly includes the coupling of the polarization to the strain, the electrostatic interaction between polarizations, and a quenched random compressional stress field generated by point defects. The strain field and its associated elastic energy are written in terms of the stress field and the electric polarization by energy minimization subject to elastic compatibility. C1 [Porta, Marcel; Lookman, Turab; Saxena, Avadh] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Porta, Marcel; Lookman, Turab] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada. RP Porta, M (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. OI Porta Tena, Marcel/0000-0001-7582-9671; Lookman, Turab/0000-0001-8122-5671 FU US DOE [DE-AC52-06NA25396]; NSERC of Canada FX We acknowledge fruitful discussions with X Ren. This work was supported by the US DOE under Contract No DE-AC52-06NA25396 and NSERC of Canada. NR 31 TC 14 Z9 14 U1 3 U2 16 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 SEP 1 PY 2010 VL 22 IS 34 AR 345902 DI 10.1088/0953-8984/22/34/345902 PG 14 WC Physics, Condensed Matter SC Physics GA 637VQ UT WOS:000280847200023 PM 21403265 ER PT J AU Smerdon, JA Cross, N Dhanak, VR Sharma, HR Young, KM Lograsso, TA Ross, AR McGrath, R AF Smerdon, J. A. Cross, N. Dhanak, V. R. Sharma, H. R. Young, K. M. Lograsso, T. A. Ross, A. R. McGrath, R. TI Structure and reactivity of Bi allotropes on the fivefold icosahedral Al-Pd-Mn quasicrystal surface SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID 10-FOLD SURFACE; THIN-FILMS; C-60; ADSORPTION; BISMUTH; GROWTH; STM AB The growth of Bi on a pseudomorphic Bi monolayer on the fivefold surface of the icosahedral Al-Pd-Mn quasicrystal has been investigated using low energy electron diffraction and scanning tunnelling microscopy. Initially randomly oriented pseudocubic islands are formed with a preference for an even number of layers. Subsequently a morphological transformation takes place to hexagonal Bi islands, which align along high symmetry directions of the substrate. The Bi flux is found to have a strong effect on which island structure is preferred. When C(60) is adsorbed on the three different allotropes of Bi present in this system, hexagonal C(60) islands are formed in each case. On the pseudocubic and hexagonal islands, the C(60) islands are aligned with the substrate. We discuss the energetic, kinetic and geometrical factors which influence the morphological transformation referred to above. C1 [Smerdon, J. A.; Cross, N.; Dhanak, V. R.; Sharma, H. R.; Young, K. M.; McGrath, R.] Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England. [Smerdon, J. A.; Cross, N.; Dhanak, V. R.; Sharma, H. R.; Young, K. M.; McGrath, R.] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England. [Lograsso, T. A.; Ross, A. R.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP McGrath, R (reprint author), Univ Liverpool, Surface Sci Res Ctr, POB 147, Liverpool L69 3BX, Merseyside, England. EM mcgrath@liv.ac.uk RI McGrath, Ronan/A-1568-2009 OI McGrath, Ronan/0000-0002-9880-5741 FU EPSRC [EP/D05253X/1] FX The EPSRC is acknowledged for funding this project under Grant No EP/D05253X/1. The authors thank Renee Diehl for stimulating discussions. NR 31 TC 9 Z9 9 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD SEP 1 PY 2010 VL 22 IS 34 AR 345002 DI 10.1088/0953-8984/22/34/345002 PG 7 WC Physics, Condensed Matter SC Physics GA 637VQ UT WOS:000280847200004 PM 21403246 ER PT J AU Wu, J Carlton, D Oelker, E Park, JS Jin, E Arenholz, E Scholl, A Hwang, CY Bokor, J Qiu, ZQ AF Wu, J. Carlton, D. Oelker, E. Park, J. S. Jin, E. Arenholz, E. Scholl, A. Hwang, Chanyong Bokor, J. Qiu, Z. Q. TI Switching a magnetic vortex by interlayer coupling in epitaxially grown Co/Cu/Py/Cu(001) trilayer disks SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article AB Epitaxial Py/Cu/Co/Cu(001) trilayers were patterned into micron sized disks and imaged using element-specific photoemission electron microscopy. By varying the Cu spacer layer thickness, we study how the coupling between the two magnetic layers influences the formation of magnetic vortex states. We find that while the Py and Co disks form magnetic vortex domains when the interlayer coupling is ferromagnetic, the magnetic vortex domains of the Py and Co disks break into anti-parallel aligned multidomains when the interlayer coupling is antiferromagnetic. We explain this result in terms of magnetic flux closure between the Py and Co layers for the antiferromagnetic coupling case. C1 [Wu, J.; Oelker, E.; Park, J. S.; Jin, E.; Qiu, Z. Q.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Carlton, D.; Bokor, J.] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. [Arenholz, E.; Scholl, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. [Hwang, Chanyong] Korea Res Inst Stand & Sci, Taejon 305340, South Korea. RP Wu, J (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM qiu@socrates.berkeley.edu RI Scholl, Andreas/K-4876-2012; Bokor, Jeffrey/A-2683-2011; Qiu, Zi Qiang/O-4421-2016 OI Qiu, Zi Qiang/0000-0003-0680-0714 FU National Science Foundation [DMR-0803305]; US Department of Energy [DE-AC02-05CH11231]; KICOS through Global Research Laboratory; Chinese Education Department; Western Institute of Nanoelectronics (WIN) FX This work was supported by National Science Foundation DMR-0803305, US Department of Energy DE-AC02-05CH11231, KICOS through Global Research Laboratory project, Chinese Education Department, and Western Institute of Nanoelectronics (WIN). NR 11 TC 7 Z9 7 U1 1 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD SEP 1 PY 2010 VL 22 IS 34 AR 342001 DI 10.1088/0953-8984/22/34/342001 PG 4 WC Physics, Condensed Matter SC Physics GA 637VQ UT WOS:000280847200001 PM 21403243 ER PT J AU Arnaldi, R Banicz, K Borer, K Castor, J Chaurand, B Chen, W Cicalo, C Colla, A Cortese, P Damjanovic, S David, A de Falco, A Devaux, A Ducroux, L En'yo, H Fargeix, J Ferretti, A Floris, M Forster, A Force, P Guettet, N Guichard, A Gulkanyan, H Heuser, J Keil, M Li, Z Lourenco, C Lozano, J Manso, F Martins, P Masoni, A Neves, A Ohnishi, H Oppedisano, C Parracho, P Pillot, P Poghosyan, T Puddu, G Radermacher, E Ramalhete, P Rosinsky, P Scomparin, E Seixas, J Serci, S Shahoyan, R Sonderegger, P Specht, HJ Tieulent, R Uras, A Usai, G Veenhof, R Wohri, HK AF Arnaldi, R. Banicz, K. Borer, K. Castor, J. Chaurand, B. Chen, W. Cicalo, C. Colla, A. Cortese, P. Damjanovic, S. David, A. de Falco, A. Devaux, A. Ducroux, L. En'yo, H. Fargeix, J. Ferretti, A. Floris, M. Foerster, A. Force, P. Guettet, N. Guichard, A. Gulkanyan, H. Heuser, J. Keil, M. Li, Z. Lourenco, C. Lozano, J. Manso, F. Martins, P. Masoni, A. Neves, A. Ohnishi, H. Oppedisano, C. Parracho, P. Pillot, P. Poghosyan, T. Puddu, G. Radermacher, E. Ramalhete, P. Rosinsky, P. Scomparin, E. Seixas, J. Serci, S. Shahoyan, R. Sonderegger, P. Specht, H. J. Tieulent, R. Uras, A. Usai, G. Veenhof, R. Woehri, H. K. CA NA60 Collaboration TI phi production in In-In collisions at 158 A GeV SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 14th International Conference on Strangeness in Quark Matter CY SEP 27-OCT 02, 2009 CL Rio de Janeiro, BRAZIL SP Univ Fed Rio de Janeiro, Univ Estadual Campinas, Cent Brasileiro Pesquisas Fisicas, Univ Sao Paulo, Univ Estadual Paulista, Univ Fed Rio Grande Sul ID HEAVY-ION COLLISIONS; MESONS AB The NA60 experiment at the CERN SPS studied phi production in In-In collisions at 158 A GeV via muon and kaon decay channels. The yields and transverse mass spectra observed in the two channels are compatible within errors. The results are compared to the previous measurements in Pb-Pb collisions, where large discrepancies were observed between NA50 (muon pairs) and NA49 (kaon pairs). C1 [Arnaldi, R.; Borer, K.] High Energy Phys Lab, Bern, Switzerland. [Banicz, K.; Damjanovic, S.; David, A.; Foerster, A.; Guettet, N.; Keil, M.; Lourenco, C.; Martins, P.; Parracho, P.; Radermacher, E.; Ramalhete, P.; Rosinsky, P.; Shahoyan, R.] CERN, Geneva, Switzerland. [Banicz, K.; Damjanovic, S.; Specht, H. J.] Heidelberg Univ, Inst Phys, D-6900 Heidelberg, Germany. [Castor, J.; Devaux, A.; Fargeix, J.; Force, P.; Guettet, N.; Manso, F.] Univ Clermont Ferrand, Clermont Ferrand, France. [Castor, J.; Devaux, A.; Fargeix, J.; Force, P.; Guettet, N.; Manso, F.] Univ Clermont Ferrand, Photochim Mol & Macromol Lab, CNRS, IN2P3, F-63177 Clermont Ferrand, France. [Chaurand, B.] Ecole Polytech, LLR, Palaiseau, France. [Chaurand, B.] Ecole Polytech, CNRS, IN2P3, F-91128 Palaiseau, France. [Chen, W.; Li, Z.] BNL, Upton, NY USA. [Cicalo, C.; de Falco, A.; Floris, M.; Masoni, A.; Puddu, G.; Serci, S.; Uras, A.; Usai, G.; Woehri, H. K.] Ist Nazl Fis Nucl, Cagliari, Italy. [Colla, A.; Cortese, P.; Ferretti, A.] Univ Turin, Turin, Italy. [Colla, A.; Cortese, P.; Ferretti, A.; Oppedisano, C.; Scomparin, E.] Ist Nazl Fis Nucl, I-10125 Turin, Italy. [David, A.; Keil, M.; Lozano, J.; Martins, P.; Neves, A.; Parracho, P.; Ramalhete, P.; Seixas, J.; Shahoyan, R.; Sonderegger, P.; Veenhof, R.; Woehri, H. K.] Inst Super Tecn, Lisbon, Portugal. [de Falco, A.; Floris, M.; Puddu, G.; Serci, S.; Uras, A.; Usai, G.] Univ Cagliari, Cagliari, Italy. [Ducroux, L.; Guichard, A.; Pillot, P.; Tieulent, R.] Univ Lyon 1, CNRS, IPNL, IN2P3, F-69622 Villeurbanne, France. [En'yo, H.; Heuser, J.; Ohnishi, H.] RIKEN, Saitama, Japan. [Gulkanyan, H.; Poghosyan, T.] Yerevan Phys Inst, Yerevan 375036, Armenia. RP Arnaldi, R (reprint author), High Energy Phys Lab, Bern, Switzerland. RI Tinoco Mendes, Andre David/D-4314-2011; Cortese, Pietro/G-6754-2012; Colla, Alberto/J-4694-2012; En'yo, Hideto/B-2440-2015; Usai, Gianluca/E-9604-2015; Lozano-Bahilo, Julio/F-4881-2016; Seixas, Joao/F-5441-2013; Ferretti, Alessandro/F-4856-2013; OI Tinoco Mendes, Andre David/0000-0001-5854-7699; Usai, Gianluca/0000-0002-8659-8378; Lozano-Bahilo, Julio/0000-0003-0613-140X; Seixas, Joao/0000-0002-7531-0842; Ferretti, Alessandro/0000-0001-9084-5784; Floris, Michele/0000-0003-0635-788X; Scomparin, Enrico/0000-0001-9015-9610 NR 13 TC 2 Z9 2 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD SEP PY 2010 VL 37 IS 9 SI SI AR 094030 DI 10.1088/0954-3899/37/9/094030 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 637HD UT WOS:000280807200031 ER PT J AU Luo, XF Mohanty, B Ritter, HG Xu, N AF Luo, X. F. Mohanty, B. Ritter, H. G. Xu, N. TI Energy dependence of high moments for net-proton distributions SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 14th International Conference on Strangeness in Quark Matter CY SEP 27-OCT 02, 2009 CL Rio de Janeiro, BRAZIL SP Univ Fed Rio de Janeiro, Univ Estadual Campinas, Cent Brasileiro Pesquisas Fisicas, Univ Sao Paulo, Univ Estadual Paulista, Univ Fed Rio Grande Sul ID COLLISIONS; POINT AB High moments of multiplicity distributions of conserved quantities are predicted to be sensitive to critical fluctuations. To understand the effect of the non-critical physics backgrounds on the proposed observable, we have studied various moments of net-proton distributions with the AMPT, Hijing, Therminator and UrQMD models, in which no QCD critical point physics is implemented. It is found that the centrality evolution of various moments of net-proton distributions can be uniformly described by a superposition of emission sources. In addition, in the absence of critical phenomena, some moment products of net-proton distributions, related to the baryon number susceptibilities in lattice QCD calculations, are predicted to be constant as a function of the collision centrality. We argue that a non-monotonic dependence of the moment products as a function of the beam energy may be used to locate the QCD critical point. C1 [Luo, X. F.; Ritter, H. G.; Xu, N.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Luo, X. F.] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China. [Mohanty, B.] Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India. RP Luo, XF (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM xfluo@lbl.gov OI Mohanty, Bedangadas/0000-0001-9610-2914 NR 15 TC 15 Z9 16 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 EI 1361-6471 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD SEP PY 2010 VL 37 IS 9 SI SI AR 094061 DI 10.1088/0954-3899/37/9/094061 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 637HD UT WOS:000280807200062 ER PT J AU Odyniec, G AF Odyniec, Grazyna TI RHIC beam energy scan program-experimental approach to the QCD phase diagram SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 14th International Conference on Strangeness in Quark Matter CY SEP 27-OCT 02, 2009 CL Rio de Janeiro, BRAZIL SP Univ Fed Rio de Janeiro, Univ Estadual Campinas, Cent Brasileiro Pesquisas Fisicas, Univ Sao Paulo, Univ Estadual Paulista, Univ Fed Rio Grande Sul ID TEMPERATURE; DENSITY AB A brief overview of the scientific program of the beam energy scan (BES) at RHIC, with emphasis on the search for the critical point (CP) of the QCD phase diagram, is presented. A more detailed discussion can be found in STAR Collaboration (Note no 493). The complementary experiments at other facilities are briefly discussed at the end of this paper. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Odyniec, G (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. EM G_Odyniec@lbl.gov NR 20 TC 6 Z9 6 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD SEP PY 2010 VL 37 IS 9 SI SI AR 094028 DI 10.1088/0954-3899/37/9/094028 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 637HD UT WOS:000280807200029 ER PT J AU Petreczky, P AF Petreczky, Peter TI Quarkonium in a hot medium SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 14th International Conference on Strangeness in Quark Matter CY SEP 27-OCT 02, 2009 CL Rio de Janeiro, BRAZIL SP Univ Fed Rio de Janeiro, Univ Estadual Campinas, Cent Brasileiro Pesquisas Fisicas, Univ Sao Paulo, Univ Estadual Paulista, Univ Fed Rio Grande Sul ID HEAVY QUARKS; COLLISIONS AB I review recent progress in studying quarkonium properties in a hot medium as well as possible consequences for quarkonium production in heavy-ion collisions. C1 [Petreczky, Peter] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Petreczky, Peter] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. RP Petreczky, P (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 49 TC 25 Z9 25 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD SEP PY 2010 VL 37 IS 9 SI SI AR 094009 DI 10.1088/0954-3899/37/9/094009 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 637HD UT WOS:000280807200010 ER PT J AU Ruan, LJ AF Ruan, Lijuan CA STAR Collaboration TI Production and energy loss of strange and heavy quarks SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 14th International Conference on Strangeness in Quark Matter CY SEP 27-OCT 02, 2009 CL Rio de Janeiro, BRAZIL SP Univ Fed Rio de Janeiro, Univ Estadual Campinas, Cent Brasileiro Pesquisas Fisicas, Univ Sao Paulo, Univ Estadual Paulista, Univ Fed Rio Grande Sul ID TRANSVERSE-MOMENTUM DISTRIBUTIONS; PLUS AU COLLISIONS; J/PSI SUPPRESSION; ROOT-S-NN=200 GEV; D+AU COLLISIONS; HADRON SPECTRA; ION COLLISIONS; QCD; DISSOCIATION; STAR AB Data taken over the last several years have demonstrated that RHIC has created a hot, dense medium with partonic degrees of freedom. Identified particle spectra at high transverse momentum (p(T)) and heavy flavor that are thought to be well-calibrated probes thus serve as ideal tools to study the properties of the medium. We present p(T) distributions of particle ratios in p+p collisions from the STAR experiment to understand the particle production mechanisms. These measurements will also constrain fragmentation functions in hadron-hardon collisions. In heavy-ion collisions, we highlight (1) recent measurements of strange hadrons and heavy flavor decay electrons up to high p(T) to study jet interaction with the medium and explore partonic energy loss mechanisms, and (2). and high p(T) J/psi measurements to study the effect of color screening and other possible production mechanisms. C1 [Ruan, Lijuan; STAR Collaboration] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Ruan, LJ (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. EM ruanlj@rcf.rhic.bnl.gov NR 58 TC 4 Z9 4 U1 1 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 EI 1361-6471 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD SEP PY 2010 VL 37 IS 9 SI SI AR 094013 DI 10.1088/0954-3899/37/9/094013 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 637HD UT WOS:000280807200014 ER PT J AU Sorensen, P AF Sorensen, Paul TI Implications of space-momentum correlations and geometric fluctuations in heavy-ion collisions SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 14th International Conference on Strangeness in Quark Matter CY SEP 27-OCT 02, 2009 CL Rio de Janeiro, BRAZIL SP Univ Fed Rio de Janeiro, Univ Estadual Campinas, Cent Brasileiro Pesquisas Fisicas, Univ Sao Paulo, Univ Estadual Paulista, Univ Fed Rio Grande Sul ID QUARK-GLUON PLASMA; ELLIPTIC FLOW; NUCLEAR COLLISIONS; STAR AB The standard picture of heavy-ion collisions includes a collective expansion. If the initial energy density in the collisions is lumpy, then the expansion can convert the spatial lumpiness into correlations between final-state particles. Correlations in heavy-ion collisions show prominent features not present in p+p collisions. I argue that many features of these correlations are related to the transference of over-densities from the initial overlap region into momentum-space during the QGP phase of the expansion. I show results from a toy Monte Carlo model to illustrate the consequences of lumpy initial conditions and a collective expansion. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Sorensen, P (reprint author), Brookhaven Natl Lab, POB 5000, Upton, NY 11973 USA. EM prsorensen@bnl.gov OI Sorensen, Paul/0000-0001-5056-9391 NR 46 TC 58 Z9 58 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 EI 1361-6471 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD SEP PY 2010 VL 37 IS 9 SI SI AR 094011 DI 10.1088/0954-3899/37/9/094011 PG 8 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 637HD UT WOS:000280807200012 ER PT J AU Wu, KJ Liu, F Xu, N AF Wu, K. J. Liu, F. Xu, N. TI Energy dependence of the v(2)-scaling and the QCD phase boundary SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 14th International Conference on Strangeness in Quark Matter CY SEP 27-OCT 02, 2009 CL Rio de Janeiro, BRAZIL SP Univ Fed Rio de Janeiro, Univ Estadual Campinas, Cent Brasileiro Pesquisas Fisicas, Univ Sao Paulo, Univ Estadual Paulista, Univ Fed Rio Grande Sul ID NUCLEAR COLLISIONS; SEARCH AB In high-energy nuclear collisions at RHIC (v sNN = 60-200 GeV), quark coalescence has been suggested as one of the processes for hadronization. As a result, one observes a scaling in the elliptic flow parameter v2 and hadron-type dependence (within the 2 < pT < 5 GeV/ c region) in the nuclear modification parameter RAA. On the other hand, in a given collision when the center of mass energy is not sufficiently high to create partonic matter, one would not expect the scaling in the final observed v2. Hence, the scaling provides us a sensitive tool for the search for the possible phase boundary in the hot/ dense matter dominated by either partonic or hadronic degrees of freedom. In this paper, we will report the results from analyzing the energy dependence of v2 for identified hadrons from Au+ Au collisions. Data from transport models are used in our analysis. In this model calculation, without the partonic coalescence the scaling in v2 is absent. C1 [Wu, K. J.; Liu, F.] China Ctr Normal Univ, Inst Particle Phys, Wuhan, Peoples R China. [Xu, N.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Wu, KJ (reprint author), China Ctr Normal Univ, Inst Particle Phys, Wuhan, Peoples R China. EM nxu@lbl.gov NR 21 TC 5 Z9 5 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 EI 1361-6471 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD SEP PY 2010 VL 37 IS 9 SI SI AR 094029 DI 10.1088/0954-3899/37/9/094029 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 637HD UT WOS:000280807200030 ER PT J AU Brady, MP Wang, H Turner, JA Meyer, HM More, KL Tortorelli, PF McCarthy, BD AF Brady, M. P. Wang, H. Turner, J. A. Meyer, H. M., III More, K. L. Tortorelli, P. F. McCarthy, B. D. TI Pre-oxidized and nitrided stainless steel alloy foil for proton exchange membrane fuel cell bipolar plates: Part 1. Corrosion, interfacial contact resistance, and surface structure SO JOURNAL OF POWER SOURCES LA English DT Article DE Polymer electrolyte/proton exchange membrane (PEM) fuel cells; Nitride; Metallic bipolar plates; Durability; Corrosion resistance ID THERMAL NITRIDATION; CHROMIUM NITRIDE; CR-NITRIDES; 316L; CONDUCTIVITY; DEGRADATION; SEPARATOR; STABILITY; TITANIUM; BEHAVIOR AB Thermal (gas) nitridation of stainless steel alloys can yield low interfacial contact resistance (ICR), electrically conductive and corrosion-resistant nitride containing surface layers (Cr(2)N, CrN,TiN, V(2)N, VN, etc.) of interest for fuel cells, batteries, and sensors. This paper presents results of scale-up studies to determine the feasibility of extending the nitridation approach to thin 0.1 mm stainless steel alloy foils for proton exchange membrane fuel cell (PEMFC) bipolar plates. Developmental Fe-20Cr-4V alloy and type 2205 stainless steel foils were treated by pre-oxidation and nitridation to form low-ICR, corrosion-resistant surfaces. As-treated Fe-20Cr-4V foil exhibited target (low) ICR values, whereas 2205 foil suffered from run-to-run variation in ICR values, ranging up to 2x the target value. Pre-oxidized and nitrided surface structure examination revealed surface-through-layer-thickness V-nitride particles for the treated Fe-20Cr-4V, but near continuous chromia for treated 2205 stainless steel, which was linked to the variation in ICR values. Promising corrosion resistance was observed under simulated aggressive PEMFC anode- and cathode-side bipolar plate conditions for both materials, although ICR values were observed to increase. The implications of these findings for stamped bipolar plate foils are discussed. (C) 2010 Elsevier B.V. All rights reserved. C1 [Brady, M. P.; Meyer, H. M., III; More, K. L.; Tortorelli, P. F.; McCarthy, B. D.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Wang, H.; Turner, J. A.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Brady, MP (reprint author), Oak Ridge Natl Lab, MS 6115, Oak Ridge, TN 37831 USA. EM bradymp@ornl.gov RI McCarthy, Brian/B-6248-2009; Tortorelli, Peter/E-2433-2011; Brady, Michael/A-8122-2008; More, Karren/A-8097-2016 OI Brady, Michael/0000-0003-1338-4747; More, Karren/0000-0001-5223-9097 FU U.S. Department of Energy's Hydrogen, Fuel Cells; ORNL; Scientific User Facilities Division, Office of Basic Energy Sciences, the U.S. Department of Energy; US DOE [DE-ACO5-000R22725] FX The authors thank D.F. Wilson, T.J. Toops, B.A. Pint, and D.P. Stinton for reviewing this manuscript. The authors also thank L.R. Walker for microprobe analysis, D.W. Coffey for STEM specimen preparation, G.W. Garner for performing the nitridation exposures, and J.M. Rakowski of ATI Allegheny Ludlum for the Fe-20Cr-4V and 2205 stainless steel foils. Funding from the U.S. Department of Energy's Hydrogen, Fuel Cells, and Infrastructure Program is gratefully acknowledged. Research supported by ORNL's SHaRE User Facility, which is sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, the U.S. Department of Energy. B. McCarthy thanks the ORAU HERE program for a summer internship at ORNL. ORNL is managed by UT-Battelle, LLC for the US DOE under contract DE-ACO5-000R22725. Notice: This submission was sponsored by a contractor of the United States Government under contract DE-ACO5-000R22725 with the United States Department of Energy. The United States Government retains, and the publisher, by accepting this submission 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 submission, or allow others to do so, for United States Government purposes. NR 43 TC 17 Z9 19 U1 1 U2 28 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 1 PY 2010 VL 195 IS 17 SI SI BP 5610 EP 5618 DI 10.1016/j.jpowsour.2010.03.055 PG 9 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 609IY UT WOS:000278651100024 ER PT J AU Toops, TJ Brady, MP Tortorelli, PF Pihl, JA Estevez, F Connors, D Garzon, F Rockward, T Gervasio, D Mylan, W Kosaraju, SH AF Toops, Todd J. Brady, Michael P. Tortorelli, Peter F. Pihl, Josh A. Estevez, Francisco Connors, Daniel Garzon, Fernando Rockward, Tommy Gervasio, Don Mylan, William Kosaraju, Sree Harsha TI Pre-oxidized and nitrided stainless steel alloy foil for proton exchange membrane fuel cell bipolar plates. Part 2: Single-cell fuel cell evaluation of stamped plates SO JOURNAL OF POWER SOURCES LA English DT Article DE Polymer electrolyte/proton exchange membrane (PEM) fuel cells; Nitride; Metallic bipolar plates; Durability; Corrosion resistance ID CR-NITRIDES; DEGRADATION AB Thermal (gas) nitridation of stainless steel alloys can yield low interfacial contact resistance (ICR), electrically conductive and corrosion-resistant nitride containing surface layers (Cr(2)N, CrN, TiN, V(2)N, VN, etc.) of interest for fuel cells, batteries, and sensors. This paper presents results of proton exchange membrane (PEM) single-cell fuel cell studies of stamped and pre-oxidized/nitrided developmental Fe-20Cr-4V weight percent (wt.%) and commercial type 2205 stainless steel alloy foils. The single-cell fuel cell behavior of the stamped and pre-oxidizecl/nitrided material was compared to as-stamped (no surface treatment) 904L, 2205, and Fe-20Cr-4V stainless steel alloy foils and machined graphite of similar flow field design. The best fuel cell behavior among the alloys was exhibited by the pre-oxidized/nitrided Fe-20Cr-4V, which exhibited similar to 5-20% better peak power output than untreated Fe-20Cr-4V, 2205, and 904L metal stampings. Durability was assessed for pre-oxidized/nitrided Fe-20Cr-4V, 904L metal, and graphite plates by 1000+ h of cyclic single-cell fuel cell testing. All three materials showed good durability with no significant degradation in cell power output. Post-test analysis indicated no metal ion contamination of the membrane electrode assemblies (MEAs) occurred with the pre-oxidized and nitrided Fe-20Cr-4V or graphite plates, and only a minor amount of contamination with the 904L plates. (C) 2010 Elsevier B.V. All rights reserved. C1 [Toops, Todd J.; Brady, Michael P.; Tortorelli, Peter F.; Pihl, Josh A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Estevez, Francisco; Connors, Daniel] AGNI GenCell, Southbury, CT 06488 USA. [Garzon, Fernando; Rockward, Tommy] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Gervasio, Don; Mylan, William; Kosaraju, Sree Harsha] Arizona State Univ, Tempe, AZ 85287 USA. RP Brady, MP (reprint author), Oak Ridge Natl Lab, MS 6115, Oak Ridge, TN 37831 USA. EM bradymp@ornl.gov RI Tortorelli, Peter/E-2433-2011; Brady, Michael/A-8122-2008 OI Brady, Michael/0000-0003-1338-4747 FU US DOE [DE-ACO5-000R22725]; United States Government [DE-ACO5-000R22725] FX The authors thank William P. Partridge and Burak Ozpineci for reviewing this manuscript. The authors also thank G.W. Garner for performing the pre-oxidation nitridation exposures, and J.M. Rakowski of ATI Allegheny Ludlum for the Fe-20Cr-4V, 2205, and 9041. foils. Funding from the U.S. Department of Energy's Hydrogen, Fuel Cells, and Infrastructure Program is gratefully acknowledged. ORNL is managed by UT-Battelle, LLC for the US DOE under contract DE-ACO5-000R22725. Notice: This submission was sponsored by a contractor of the United States Government under contract DE-ACO5-000R22725 with the United States Department of Energy. The United States Government retains, and the publisher, by accepting this submission 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 submission, or allow others to do so, for United States Government purposes. NR 19 TC 12 Z9 14 U1 1 U2 14 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 1 PY 2010 VL 195 IS 17 SI SI BP 5619 EP 5627 DI 10.1016/j.jpowsour.2010.03.056 PG 9 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 609IY UT WOS:000278651100025 ER PT J AU Chou, YS Stevenson, JW Xia, GG Yang, ZG AF Chou, Y. -S. Stevenson, J. W. Xia, G. -G. Yang, Z. -G. TI Electrical stability of a novel sealing glass with (Mn,Co)-spinel coated Crofer22APU in a simulated SOFC dual environment SO JOURNAL OF POWER SOURCES LA English DT Article DE Electrical stability; Sealing glass; Interface; Crofer22APU; SOFC ID OXIDE FUEL-CELL; INTERCONNECT APPLICATIONS; CERAMIC SEALANTS; STAINLESS-STEELS; ALLOY; CRYSTALLIZATION; TECHNOLOGY; COATINGS; PROGRESS AB A novel alkaline-earth silicate (Sr-Ca-Y-B-Si-Zn) sealing glass was developed for solid oxide fuel cell (SOFC) applications. The glass was sandwiched between two metallic interconnect plates and tested for electrical stability in a dual environment at elevated temperatures of 800-850 degrees C. A ferritic stainless steel (Crofer22APU) was used as the metallic interconnect material in the as-received state and coated with (Mn,Co)(3)O(4) spinel. The isothermal aging results showed stable electrical resistivity at 800-850 degrees C for similar to 500-1000 h. The electrical resistivities at 800 or 850 degrees C of the spinel coated samples were lower than the as-received ones; however, they were still several orders of magnitude higher than typical SOFC functional parts. Interfacial microstructure was characterized and possible reactions are discussed. (C) 2010 Elsevier B.V. All rights reserved. C1 [Chou, Y. -S.; Stevenson, J. W.; Xia, G. -G.; Yang, Z. -G.] Pacific NW Natl Lab, Energy & Efficiency Div, Richland, WA 99354 USA. RP Chou, YS (reprint author), Pacific NW Natl Lab, Energy & Efficiency Div, K2-44,POB 999, Richland, WA 99354 USA. EM yeong-shyung.chou@pnl.gov FU US Department of Energy [DE-AC06-76RLO 1830] FX The authors would like to thank S. Carlson for SEM sample preparation and J. Coleman for SEM analysis. This work summarized in this paper was funded by the US Department of Energy's Solid-State Energy Conversion Alliance (SECA) Core Technology Program. The authors would like to thank Wayne Surdoval and Briggs White from NETL for helpful discussions. Pacific Northwest National Laboratory is operated by Battelle Memorial Institute for the US Department of Energy under Contract no. DE-AC06-76RLO 1830. NR 29 TC 23 Z9 23 U1 2 U2 17 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 1 PY 2010 VL 195 IS 17 SI SI BP 5666 EP 5673 DI 10.1016/j.jpowsour.2010.03.052 PG 8 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 609IY UT WOS:000278651100031 ER PT J AU Milhans, J Li, D Khaleel, M Sun, X Garmestani, H AF Milhans, J. Li, D. Khaleel, M. Sun, X. Garmestani, H. TI Statistical continuum mechanics analysis of effective elastic properties in solid oxide fuel cell glass-ceramic seal material SO JOURNAL OF POWER SOURCES LA English DT Article DE Solid oxide fuel cell; Glass-ceramic; Two-point correlation function; Temperature dependent modulus; Aging ID 2-POINT CORRELATION-FUNCTIONS; SPATIAL CORRELATION-FUNCTIONS; HETEROGENEOUS MATERIALS; PREDICTING PROPERTIES; 2-PHASE SOLIDS; CRYSTALLIZATION KINETICS; BEHAVIOR; DESIGN; CONDUCTIVITY; COMPOSITES AB A full statistical analysis of the microstructure of glass-ceramic solid oxide fuel cell (SOFC) seal material, G18, is performed to calculate elastic properties. Predictions are made for samples aged for 4h and 1000 h, giving different crystallinity levels. Microstructure of the glass-ceramic G18 is characterized by correlation function for each individual phase. Predicted results are compared with the Voigt and Reuss bounds in this study. The weak contrast analysis results in elastic modulus predictions between the upper and lower bounds but closer to the upper bound. (C) 2010 Elsevier B.V. All rights reserved. C1 [Milhans, J.; Li, D.; Garmestani, H.] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. [Khaleel, M.; Sun, X.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99354 USA. RP Milhans, J (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, 771 Ferst Dr,Love Bldg Rm 353, Atlanta, GA 30332 USA. EM jackie.milhans@gmail.com OI khaleel, mohammad/0000-0001-7048-0749 FU United States Department of Energy [DE-AC06-76RL01830]; U.S. Department of Energy's National Energy Technology Laboratory (NETL); Boeing Fellowship FX The Pacific Northwest National Laboratory is operated by Battelle Memorial Institute for the United States Department of Energy under Contract DE-AC06-76RL01830. The work summarized in this report was funded as part of the Solid-State Energy Conversion Alliance (SECA) Core Technology Program by the U.S. Department of Energy's National Energy Technology Laboratory (NETL). Funding was additionally provided by the Boeing Fellowship. NR 33 TC 6 Z9 6 U1 1 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 1 PY 2010 VL 195 IS 17 SI SI BP 5726 EP 5730 DI 10.1016/j.jpowsour.2010.03.079 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 609IY UT WOS:000278651100037 ER PT J AU Shet, S Ahn, KS Deutsch, T Wang, HL Nuggehalli, R Yan, YF Turner, J Al-Jassim, M AF Shet, Sudhakar Ahn, Kwang-Soon Deutsch, Todd Wang, Heli Nuggehalli, Ravindra Yan, Yanfa Turner, John Al-Jassim, Mowafak TI Influence of gas ambient on the synthesis of co-doped ZnO:(Al,N) films for photoelectrochemical water splitting SO JOURNAL OF POWER SOURCES LA English DT Article DE ZnO; ZnO:(Al,N); Co-doping; Gas ambient; Photoelectrochemical; Bandgap ID P-TYPE ZNO; THIN-FILMS; CODOPING METHOD; HYDROGEN; TIO2; CELLS AB Al and N co-doped ZnO thin films, ZnO:(AI,N), are synthesized by radio-frequency magnetron sputtering in mixed Ar and N(2) and mixed O(2) and N(2) gas ambient at 100 degrees C. The ZnO:(AI,N) films deposited in mixed Ar and N(2) gas ambient did not incorporate N, whereas ZnO:(AI,N) films grown in mixed O(2) and N(2) gas ambient showed enhanced N incorporation and crystallinity as compared to ZnO:N thin films grown in the same gas ambient. As a result, ZnO:(AI,N) films grown in mixed O(2) and N(2) gas ambient showed higher photocurrents than the ZnO:(Al,N) thin films deposited in mixed Ar and N(2) gas ambient. Our results indicate that the gas ambient plays an important role in N incorporation and crystallinity control in Al and N co-doped ZnO thin films. (C) 2010 Elsevier By. All rights reserved. C1 [Shet, Sudhakar] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA. [Shet, Sudhakar; Nuggehalli, Ravindra] New Jersey Inst Technol, Newark, NJ 07102 USA. [Ahn, Kwang-Soon] Yeungnam Univ Gyeongsan, Sch Display & Chem Engn, Kyongsan 712749, South Korea. RP Shet, S (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, 1617 Cole Blvd, Golden, CO 80401 USA. EM sudhakar.shet@nrel.gov OI Deutsch, Todd/0000-0001-6577-1226 FU U.S. Department of Energy [DE-AC36-08GO28308] FX This work was supported by the U.S. Department of Energy under Contract # DE-AC36-08GO28308. NR 31 TC 37 Z9 38 U1 7 U2 39 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 1 PY 2010 VL 195 IS 17 SI SI BP 5801 EP 5805 DI 10.1016/j.jpowsour.2010.03.058 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 609IY UT WOS:000278651100048 ER PT J AU Srikant, S Wagner, JL Valdivia, A Akella, MR Clemens, N AF Srikant, S. Wagner, J. L. Valdivia, A. Akella, M. R. Clemens, N. TI Unstart Detection in a Simplified-Geometry Hypersonic Inlet-Isolator Flow SO JOURNAL OF PROPULSION AND POWER LA English DT Article ID DUAL-MODE SCRAMJET; COMBUSTION AB Unstart detection techniques based on high-frequency pressure measurements made in a hypersonic inlet isolator model are investigated. In this study, data that were acquired in a previous study of backpressure-induced unstart were examined. The data were acquired in a simplified-geometry inlet isolator model that consisted of a 6 deg compression ramp inlet followed by a constant-area duct that was 25.4 mm high by 50.8 mm wide by 227.1 mm long. Fluctuating wall pressures were measured along the length of the model. A downstream flap was used to induce unstart in the model. Beyond a certain flap angle, unstart was induced, and the shock system propagated upstream and out of the inlet. The wall-pressure data, acquired as the flap was raised, were postprocessed for spectral and statistical content to evaluate different unstart detection criteria. Three shock leading-edge detection criteria are examined based on the following observations as the shock system passes over a pressure transducer: 1) a rise in pressure, 2) an increase in standard-deviation of the pressure signal, and 3) an increase in power in the 300-400 Hz frequency band. After calibrating the algorithms based on runs with no active control, a comparison of the times detected for unstart onset and unstart arrest was made based on runs with active control. Results indicate that the power-spectrum-based algorithm implemented close to the isolator exit is more sensitive to the onset of unstart, whereas the pressure-magnitude-change criterion gives earlier detection in many cases. A combination of the two, a pressure-magnitude criterion close to the inlet entrance and a spectral-power criterion near the isolator exit, therefore seems to be the most robust scheme for unstart active control. The appropriate choice of sampling frequency significantly improved the computation speed of the spectral-power-based algorithm without delaying the unstart detection times. C1 [Srikant, S.; Valdivia, A.; Akella, M. R.; Clemens, N.] Univ Texas Austin, Dept Aerosp Engn & Engn Mech, Austin, TX 78712 USA. [Wagner, J. L.] Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA. RP Srikant, S (reprint author), Univ Texas Austin, Dept Aerosp Engn & Engn Mech, 1 Univ Stn, Austin, TX 78712 USA. RI Sukumar, Srikant/N-1178-2013; sukumar, srikant/M-3407-2015 OI Sukumar, Srikant/0000-0001-8279-485X; sukumar, srikant/0000-0002-3477-1685 FU U.S. Air Force Office of Scientific Research under the Multidisciplinary University Research Initiative [FA9550-04-1-0387] FX The research work was supported in part by the U.S. Air Force Office of Scientific Research under the Multidisciplinary University Research Initiative grant FA9550-04-1-0387. The authors would also like to acknowledge the help provided by K. Bulent Yuceil at the Flowfield Imaging Laboratory, University of Texas at Austin. NR 22 TC 16 Z9 17 U1 3 U2 23 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD SEP-OCT PY 2010 VL 26 IS 5 BP 1059 EP 1071 DI 10.2514/1.46937 PG 13 WC Engineering, Aerospace SC Engineering GA 662FT UT WOS:000282793500018 ER PT J AU Brown, RN Romine, MF Schepmoes, AA Smith, RD Lipton, MS AF Brown, Roslyn N. Romine, Margaret F. Schepmoes, Athena A. Smith, Richard D. Lipton, Mary S. TI Mapping the Subcellular Proteome of Shewanella oneidensis MR-1 using Sarkosyl-Based Fractionation and LC-MS/MS Protein Identification SO JOURNAL OF PROTEOME RESEARCH LA English DT Article DE subcellular; proteomics; Sarkosyl; fractionation; Shewanella ID SIGNAL RECOGNITION PARTICLE; OUTER-MEMBRANE CYTOCHROMES; TANDEM MASS-SPECTROMETRY; SALMONELLA-TYPHIMURIUM PROTEOME; GRAM-NEGATIVE BACTERIA; TIME TAG APPROACH; ESCHERICHIA-COLI; PUTREFACIENS MR-1; HYPOTHETICAL PROTEINS; CYTOPLASMIC MEMBRANE AB A simple and effective subcellular proteomic method for fractionation based on osmotic lysis, differential centrifugation, and Sarkosyl solubilization was applied to the Gram-negative bacterium Shewanella oneidensis to gain insight into its subcellular architecture. Global differences in bacterial cytoplasm, inner membrane, periplasm, and outer membrane protein fractions were observed by SDS PAGE and heme staining, and tryptic peptides were analyzed using high-resolution liquid chromatography tandem mass spectrometry. Proteins predicted to be localized to each subcellular fraction were enriched similar to 2-fold (on average) in each fraction compared to crude cell lysates. In addition, the Sarkosyl solubilization method facilitated separation of the inner and outer membranes, making the procedure amenable for effective probing of the subcellular proteome of Gram-negative bacteria via liquid chromatography tandem mass spectrometry. With 40% of the observable proteome represented, this study provides extensive information on both subcellular architecture and relative abundance of proteins in S. oneidensis and provides a foundation for future work on subcellular organization and protein membrane interactions in other Gram-negative bacteria. C1 [Brown, Roslyn N.; Romine, Margaret F.; Schepmoes, Athena A.; Smith, Richard D.; Lipton, Mary S.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. RP Lipton, MS (reprint author), Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. EM mary.lipton@pnl.gov RI Smith, Richard/J-3664-2012; OI Smith, Richard/0000-0002-2381-2349; Romine, Margaret/0000-0002-0968-7641 FU U.S. Department of Energy Office of Biological and Environmental Research (DOE/BER) at the Pacific Northwest National Laboratory (PNNL); DOE [DE-AC05-76RL01830] FX This research was supported by the U.S. Department of Energy Office of Biological and Environmental Research (DOE/BER) GtL:Genomes to Life program at the Pacific Northwest National Laboratory (PNNL). We gratefully acknowledge the contributions of Samantha Bree Reed, Catherine Reardon, Therese Clauss, Anuj Shah, and Penny Colton to this publication. Proteomic analyses were performed in the Environmental Molecular Sciences Laboratory, a DOE/BER national scientific user facility on the PNNL campus in Richland, Washington. PNNL is a multiprogram national laboratory operated by Battelle for the DOE under Contract DE-AC05-76RL01830. NR 72 TC 24 Z9 24 U1 1 U2 21 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1535-3893 J9 J PROTEOME RES JI J. Proteome Res. PD SEP PY 2010 VL 9 IS 9 BP 4454 EP 4463 DI 10.1021/pr100215h PG 10 WC Biochemical Research Methods SC Biochemistry & Molecular Biology GA 645HS UT WOS:000281443700013 PM 20690604 ER PT J AU Qian, WJ Petritis, BO Kaushal, A Finnerty, CC Jeschke, MG Monroe, ME Moore, RJ Schepmoes, AA Xiao, WZ Moldawer, LL Davis, RW Tompkins, RG Herndon, DN Camp, DG Smith, RD AF Qian, Wei-Jun Petritis, Brianne O. Kaushal, Amit Finnerty, Celeste C. Jeschke, Marc G. Monroe, Matthew E. Moore, Ronald J. Schepmoes, Athena A. Xiao, Wenzhong Moldawer, Lyle L. Davis, Ronald W. Tompkins, Ronald G. Herndon, David N. Camp, David G., II Smith, Richard D. CA Inflammation Host Response Injury TI Plasma Proteome Response to Severe Burn Injury Revealed by O-18-Labeled "Universal" Reference-Based Quantitative Proteomics SO JOURNAL OF PROTEOME RESEARCH LA English DT Article DE human plasma; quantitative proteomics; O-18 labeling; LC-MS; burn; inflammation; "universal" reference ID CHROMATOGRAPHY-MASS SPECTROMETRY; TIME TAG APPROACH; LIQUID-CHROMATOGRAPHY; METABOLIC-RESPONSE; ORGAN DYSFUNCTION; ACCURATE MASS; EXPRESSION; INFLAMMATION; ACTIVATION; LIPOPOLYSACCHARIDE AB A burn injury represents one of the most severe forms of human trauma and is responsible for significant mortality worldwide. Here, we present the first quantitative proteomics investigation of the blood plasma proteome response to severe burn injury by comparing the plasma protein concentrations of 10 healthy control subjects with those of 15 severe burn patients at two time-points following the injury. The overall analytical strategy for this work integrated immunoaffinity depletion of the 12 most abundant plasma proteins with cysteinyl-peptide enrichment-based fractionation prior to LC-MS analyses of individual patient samples. Incorporation of an O-18-labeled "universal" reference among the sample sets enabled precise relative quantification across samples. In total, 313 plasma proteins confidently identified with two or more unique peptides were quantified. Following statistical analysis, 110 proteins exhibited significant abundance changes in response to the burn injury. The observed changes in protein concentrations suggest significant inflammatory and hypermetabolic response to the injury, which is supported by the fact that many of the identified proteins are associated with acute phase response signaling, the complement system, and coagulation system pathways. The regulation of similar to 35 proteins observed in this study is in agreement with previous results reported for inflammatory or burn response, but approximately 50 potentially novel proteins previously not known to be associated with burn response or inflammation are also found. Elucidating proteins involved in the response to severe burn injury may reveal novel targets for therapeutic interventions as well as potential predictive biomarkers for patient outcomes such as multiple organ failure. C1 [Qian, Wei-Jun; Petritis, Brianne O.; Monroe, Matthew E.; Moore, Ronald J.; Schepmoes, Athena A.; Camp, David G., II; Smith, Richard D.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. [Qian, Wei-Jun; Petritis, Brianne O.; Monroe, Matthew E.; Moore, Ronald J.; Schepmoes, Athena A.; Camp, David G., II; Smith, Richard D.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. [Kaushal, Amit; Xiao, Wenzhong; Davis, Ronald W.] Stanford Univ, Sch Med, Stanford Genome Technol Ctr, Palo Alto, CA 94304 USA. [Finnerty, Celeste C.; Jeschke, Marc G.; Herndon, David N.] Univ Texas Med Branch, Shriners Burns Hosp, Dept Surg, Galveston, TX 77550 USA. [Moldawer, Lyle L.] Univ Florida, Coll Med, Dept Surg, Gainesville, FL 32610 USA. [Tompkins, Ronald G.] Harvard Univ, Shriners Burn Ctr, Dept Surg, Sch Med, Boston, MA 02114 USA. [Tompkins, Ronald G.] Harvard Univ, Sch Med, Massachusetts Gen Hosp, Boston, MA 02114 USA. RP Smith, RD (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, POB 999,MSIN K8-98, Richland, WA 99352 USA. EM rds@pnl.gov RI Qian, Weijun/C-6167-2011; Smith, Richard/J-3664-2012; OI Smith, Richard/0000-0002-2381-2349; xiao, wenzhong/0000-0003-4944-6380 FU National Institute of General Medical Sciences (NIGMS) [U54 GM-62119-02, T32 GM-008256]; NIH National Center for Research Resources [RR18522]; EMSL (Environmental Molecular Science Laboratory); U.S. Department of Energy (DOE) Office of Biological and Environmental Research on the Pacific Northwest National Laboratory (PNNL) campus in Richland, Washington; Battelle [DE-AC05-76RLO-1830] FX Portions of this research were supported by the National Institute of General Medical Sciences (NIGMS; Large Scale Collaborative Research Grants U54 GM-62119-02 and T32 GM-008256), the NIH National Center for Research Resources (RR18522), and EMSL (Environmental Molecular Science Laboratory). EMSL is a national scientific user facility sponsored by the U.S. Department of Energy (DOE) Office of Biological and Environmental Research on the Pacific Northwest National Laboratory (PNNL) campus in Richland, Washington. PNNL is operated by Battelle for the DOE under contract DE-AC05-76RLO-1830. Additional participating investigators in the Large Scale Collaborative Research Program entitled Inflammation and the Host Response to Injury: Henry V. Baker, Ph.D., Ulysses Balis, M.D., Paul Bankey, M.D., Timothy R. Billiar, M.D., Bernard H. Brownstein, Ph.D., Steven E. Calvano, Ph.D., Irshad H. Chaudry, Ph.D., J. Perren Cobb, M.D., Joseph Cuschieri, M.D., Asit K. De, Ph.D., Bradley Freeman, M.D., Richard L. Gamelli, M.D., Nicole S. Gibran, M.D., Brian G. Harbrecht, M.D., Douglas L. Hayden, M.A., Laura Hennessy, R.N., Jureta W. Horton, Ph.D., Jeffrey Johnson, M.D., Matthew B. Klein, M.D., Stephen F. Lowry, M.D., Ronald V. Maier, M.D., John A. Mannick, M.D., Philip H. Mason, Ph.D., Grace P. McDonald-Smith, M.Ed., Carol L. Miller-Graziano, Ph.D., Michael N. Mindrinos, Ph.D., Joseph P. Minei, M.D., Ernest E. Moore, M.D., Avery B. Nathens, M.D., Ph.D., M.P.H., Grant E. O'Keefe, M.D., M.P.H., Laurence G. Rahme, Ph.D., Daniel G. Remick, Jr. M.D., David A. Schoenfeld, Ph.D., Michael B. Shapiro, M.D., Geoffrey M. Silver, M.D., John Storey, Ph.D., Robert Tibshirani, Ph.D., Mehmet Toner, Ph.D., H. Shaw Warren, M.D., Michael A. West, M.D. NR 59 TC 29 Z9 30 U1 1 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1535-3893 J9 J PROTEOME RES JI J. Proteome Res. PD SEP PY 2010 VL 9 IS 9 BP 4779 EP 4789 DI 10.1021/pr1005026 PG 11 WC Biochemical Research Methods SC Biochemistry & Molecular Biology GA 645HS UT WOS:000281443700041 PM 20698492 ER PT J AU Cisneros-Dozal, LM Heikoop, JM Fessenden, J Anderson, RS Meyers, PA Allen, CD Hess, M Larson, T Perkins, G Rearick, M AF Cisneros-Dozal, Luz M. Heikoop, Jeffrey M. Fessenden, Julianna Anderson, R. Scott Meyers, Philip A. Allen, Craig D. Hess, Marcey Larson, Toti Perkins, George Rearick, Michael TI A 15 000-year record of climate change in northern New Mexico, USA, inferred from isotopic and elemental contents of bog sediments SO JOURNAL OF QUATERNARY SCIENCE LA English DT Article DE lead; isotopic analyses; Late Pleistocene; Younger Dryas; Southwest, USA ID SOUTHWESTERN UNITED-STATES; HOLOCENE ENVIRONMENTAL-CHANGE; LAST GLACIAL MAXIMUM; SOUTHERN HIGH-PLAINS; YOUNGER DRYAS; LATE PLEISTOCENE; ORGANIC-MATTER; BOTRYOCOCCUS-BRAUNII; AMERICAN SOUTHWEST; GREAT-BASIN AB Elemental (C, N, Pb) and isotopic (delta C-13, delta N-15) measurements of cored sediment from a small bog in northern New Mexico reveal changes in climate during the Late Pleistocene and Holocene. Abrupt increases in Pb concentration and delta C-13 values ca. 14 420 cal. YBP indicate significant runoff to the shallow lake that existed at that time. Weathering and transport of local volcanic rocks resulted in the delivery of Pb-bearing minerals to the basin, while a C-13-enriched terrestrial vegetation source increased the delta C-13 values of the sedimentary material. Wet conditions developed over a 300 a period and lasted for a few hundred years. The Younger Dryas period (ca. 12 700-11 500 cal. YBP) caused a reduction in terrestrial productivity reflected in decreasing C/N values, delta N-15 values consistently greater than 0 parts per thousand and low organic content. By contrast, aquatic productivity increased during the second half of this period, evidenced by increasing delta C-13 values at the time of highest abundance of algae. Dry conditions ca. 8000-6 000 cal. YBP were characterised by low organic carbon content and high Pb concentrations, the latter suggesting enhanced erosion and aeolian transport of volcanic rock. The range in delta C-13, delta N-15 and C/N values in the sedimentary record fall within the range of modern plants, except during the periods of runoff and drought. The sedimentary record provides evidence of natural climate variability in northern New Mexico, including short- (multi-centennial) and long-(millennial) term episodes during the Late Pleistocene and Holocene. Copyright (C) 2010 John Wiley & Sons, Ltd. C1 [Cisneros-Dozal, Luz M.; Heikoop, Jeffrey M.; Fessenden, Julianna; Hess, Marcey; Larson, Toti; Perkins, George; Rearick, Michael] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. [Anderson, R. Scott] No Arizona Univ, Sch Earth Sci & Environm Sustainabil, Flagstaff, AZ 86011 USA. [Meyers, Philip A.] Univ Michigan, Dept Geol Sci, Ann Arbor, MI 48109 USA. [Allen, Craig D.] US Geol Survey, Jemez Mt Field Stn, Ft Collins Sci Ctr, Los Alamos, NM USA. RP Cisneros-Dozal, LM (reprint author), NERC, Radiocarbon Lab, Scottish Enterprise Technol Pk,Rankine Ave, E Kilbride G75 0QF, Lanark, Scotland. EM M.Cisneros@nercrcl.gla.ac.uk RI Heikoop, Jeffrey/C-1163-2011; OI Heikoop, Jeffrey/0000-0001-7648-3385; Meyers, Philip/0000-0002-9709-7528; Larson, Toti/0000-0002-2291-5979 FU Institute of Geophysics and Planetary Physics (IGPP) at Los Alamos National Laboratory (LANL) FX We would like to thank Dr Mark Brenner and an anonymous reviewer for their valuable comments that helped to improve this paper. We thank Will Barnes for identification of plant species and personnel of the Stable Isotope Facility at the University of California Davis for C and N analyses of plant material and sediment samples. We thank Crystal Ray for help with Pb extractions. This work was supported by the Institute of Geophysics and Planetary Physics (IGPP) at Los Alamos National Laboratory (LANL). We also acknowledge original support from the US Geological Survey (Western Mountain Initiative). Laboratory of Paleoecology Contribution 121. NR 49 TC 4 Z9 4 U1 0 U2 11 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0267-8179 EI 1099-1417 J9 J QUATERNARY SCI JI J. Quat. Sci. PD SEP PY 2010 VL 25 IS 6 BP 1001 EP 1007 DI 10.1002/jqs.1387 PG 7 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA 650OL UT WOS:000281858800018 ER PT J AU Silver, GL AF Silver, G. L. TI Alpha coefficients for tetravalent plutonium SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY LA English DT Article DE Plutonium; Disproportionation; Hydrolysis ID HYDROLYSIS; CONSTANT AB The complexation of tetravalent plutonium in aqueous solutions derives from several sources including counterions, hydrolysis, additives, and impurities. A quantitative tool accounting for all such effects, known and unknown, is the alpha coefficient. It can be expressed in six ways by means of the equilibrium fractions of two Pu oxidation states. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Silver, GL (reprint author), Los Alamos Natl Lab, POB 1663,MS E502, Los Alamos, NM 87545 USA. EM gsilver@lanl.gov FU National Nuclear Security Administration of the U.S. Department of Energy [DE-AC52-06NA25396] FX Los Alamos National Laboratory is operated by the Los Alamos National Security, LLC for the National Nuclear Security Administration of the U.S. Department of Energy contract DE-AC52-06NA25396. NR 9 TC 1 Z9 1 U1 0 U2 7 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0236-5731 J9 J RADIOANAL NUCL CH JI J. Radioanal. Nucl. Chem. PD SEP PY 2010 VL 285 IS 3 BP 569 EP 571 DI 10.1007/s10967-010-0557-x PG 3 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA 640YE UT WOS:000281089300023 ER PT J AU Deng, ZQ Carlson, TJ Duncan, JP Richmond, MC Dauble, DD AF Deng, Zhiqun Carlson, Thomas J. Duncan, Joanne P. Richmond, Marshall C. Dauble, Dennis D. TI Use of an autonomous sensor to evaluate the biological performance of the advanced turbine at Wanapum Dam SO JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY LA English DT Article ID PASSAGE SURVIVAL; CHINOOK SALMON; COLUMBIA RIVER; DEPTH; FLOW AB Hydropower is the largest renewable energy resource in the United States and the world. However, hydropower dams have adverse ecological impacts because migrating fish may be injured or killed when they pass through hydroturbines. In the Columbia and Snake River basins, dam operators and engineers are required to make those hydroelectric facilities more fish-friendly through changes in hydroturbine design and operation after fish population declines and the subsequent listing of several species of Pacific salmon under the Endangered Species Act of 1973. Public Utility District No. 2 of Grant County, Washington, requested authorization from the Federal Energy Regulatory Commission to replace the ten turbines at Wanapum Dam with advanced hydropower turbines designed to improve survival for fish passing through the turbines while improving operation efficiency and increasing power generation. As an additional measure to the primary metric of direct injury and mortality rates of juvenile Chinook salmon using balloon tag-recapture methodology, this study used an autonomous sensor device-the Sensor Fish-to provide insight into the specific hydraulic conditions and physical stresses experienced by the fish as well as the specific causes of fish biological response. We found that the new hydroturbine blade shape and the corresponding reduction of turbulence in the advanced hydropower turbine were effective in meeting the objectives of improving fish survival while enhancing operational efficiency of the dam. The frequency of severe events based on Sensor Fish pressure and acceleration measurements showed trends similar to those of fish survival determined by the balloon tag-recapture methodology. In addition, the new turbine provided a better pressure and rate of pressure change environment for fish passage. Overall, the Sensor Fish data indicated that the advanced hydroturbine design improved passage of juvenile salmon at Wanapum Dam. (C) 2010 American Institute of Physics. [doi:10.1063/1.3501336] C1 [Deng, Zhiqun; Carlson, Thomas J.; Duncan, Joanne P.; Richmond, Marshall C.; Dauble, Dennis D.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Deng, ZQ (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM zhiqun.deng@pnl.gov RI Richmond, Marshall/D-3915-2013; Deng, Daniel/A-9536-2011 OI Richmond, Marshall/0000-0003-0111-1485; Deng, Daniel/0000-0002-8300-8766 FU Grant PUD; U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Wind and Hydropower Technologies Program; DOE [DE-AC05-76RL01830] FX This project was funded by Grant PUD and the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Wind and Hydropower Technologies Program. Curt Dotson was the contracting officer for Grant PUD, and Jim Ahlgrimm was the contracting officer for DOE. We also wish to thank Grant PUD, Normandeau Associates, Inc., and numerous PNNL staff. The Pacific Northwest National Laboratory (PNNL) is owned by DOE and operated by Battelle Memorial Institute under Contract No. DE-AC05-76RL01830. NR 20 TC 21 Z9 21 U1 4 U2 25 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1941-7012 J9 J RENEW SUSTAIN ENER JI J. Renew. Sustain. Energy PD SEP 1 PY 2010 VL 2 IS 5 AR 053104 DI 10.1063/1.3501336 PG 11 WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels SC Science & Technology - Other Topics; Energy & Fuels GA 729CN UT WOS:000287925800006 ER PT J AU Ricker, RE Myneni, GR AF Ricker, R. E. Myneni, G. R. TI Evaluation of the Propensity of Niobium to Absorb Hydrogen During Fabrication of Superconducting Radio Frequency Cavities for Particle Accelerators SO JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY LA English DT Article DE corrosion; diffusion; electropolishing; fabrication; hydrogen absorption; niobium; particle accelerator cavities; superconducting radio frequency ID SALT FILMS; IRON; IMPEDANCE; CORROSION; ELECTROLYTES; MECHANISM; EVOLUTION; ALUMINUM; KINETICS; METALS AB During the fabrication of niobium superconducting radio frequency (SRF) particle accelerator cavities procedures are used that chemically or mechanically remove the passivating surface film of niobium pentoxide (Nb2O5). Removal of this film will expose the underlying niobium metal and allow it to react with the processing environment. If these reactions produce hydrogen at sufficient concentrations and rates, then hydrogen will be absorbed and diffuse into the metal. High hydrogen activities could result in supersaturation and the nucleation of hydride phases. If the metal repassivates at the conclusion of the processing step and the passive film blocks hydrogen egress, then the absorbed hydrogen or hydrides could be retained and alter the performance of the metal during subsequent processing steps or in-service. This report examines the feasibility of this hypothesis by first identifying the postulated events, conditions, and reactions and then determining if each is consistent with accepted scientific principles, literature, and data. Established precedent for similar events in other systems was found in the scientific literature and thermodynamic analysis found that the postulated reactions were not only energetically favorable, but produced large driving forces. The hydrogen activity or fugacity required for the reactions to be at equilibrium was determined to indicate the propensity for hydrogen evolution, absorption, and hydride nucleation. The influence of processing conditions and kinetics on the proximity of hydrogen surface coverage to these theoretical values is discussed. This examination found that the hypothesis of hydrogen absorption during SRF processing is consistent with published scientific literature and thermodynamic principles. C1 [Ricker, R. E.] NIST, Gaithersburg, MD 20899 USA. [Myneni, G. R.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Ricker, RE (reprint author), NIST, Gaithersburg, MD 20899 USA. EM richard.ricker@nist.gov; rao@jlab.org RI Ricker, Richard/H-4880-2011 OI Ricker, Richard/0000-0002-2871-4908 NR 67 TC 18 Z9 18 U1 0 U2 5 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPERINTENDENT DOCUMENTS,, WASHINGTON, DC 20402-9325 USA SN 1044-677X J9 J RES NATL INST STAN JI J. Res. Natl. Inst. Stand. Technol. PD SEP-OCT PY 2010 VL 115 IS 5 BP 353 EP 371 DI 0.6028/jres.115.025 PG 19 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 660NW UT WOS:000282651300004 PM 27134791 ER PT J AU Brown, E Zhang, HJ Forman, NA Maynor, BW Betts, DE DeSimone, JM Jaeger, HM AF Brown, Eric Zhang, Hanjun Forman, Nicole A. Maynor, Benjamin W. Betts, Douglas E. DeSimone, Joseph M. Jaeger, Heinrich M. TI Shear thickening in densely packed suspensions of spheres and rods confined to few layers SO JOURNAL OF RHEOLOGY LA English DT Article ID DILATANT VISCOSITY BEHAVIOR; COLLOIDAL SUSPENSIONS; CONCENTRATED SUSPENSIONS; WALL SLIP; FLOW; RHEOLOGY; DISPERSIONS; PARTICLES; DYNAMICS; FILMS AB We investigate confined shear thickening suspensions for which the sample thickness is comparable to the particle dimensions. Rheometry measurements are presented for densely packed suspensions of spheres and rods with aspect ratios 6 and 9. By varying the suspension thickness in the direction of the shear gradient at constant shear rate, we find pronounced oscillations in the stress. These oscillations become stronger as the gap size is decreased, and the stress is minimized when the sample thickness becomes commensurate with an integer number of particle layers. Despite this confinement-induced effect, viscosity curves show shear thickening that retains bulk behavior down to samples as thin as two particle diameters for spheres, below which the suspension is jammed. Rods exhibit similar behavior commensurate with the particle width, but they show additional effects when the thickness is reduced below about a particle length as they are forced to align; the stress increases for decreasing gap size at fixed-shear rate while the shear thickening regime gradually transitions to a Newtonian scaling regime. This weakening of shear thickening as an ordered configuration is approached contrasts with the strengthening of shear thickening when the packing fraction is increased in the disordered bulk limit, despite the fact that both types of confinement eventually lead to jamming. (c) 2010 The Society of Rheology. [DOI: 10.1122/1.3474580] C1 [Brown, Eric; Jaeger, Heinrich M.] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA. [Zhang, Hanjun] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. [Forman, Nicole A.; Betts, Douglas E.; DeSimone, Joseph M.] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA. [Forman, Nicole A.; Maynor, Benjamin W.; DeSimone, Joseph M.] Liquidia Technol, Res Triangle Pk, NC 27709 USA. RP Brown, E (reprint author), Univ Chicago, James Franck Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA. EM embrown@uchicago.edu FU DARPA through U.S. Army Research Office [W911NF-08-1-0209]; NSF [DMR-0820054] FX This work was supported by DARPA through U.S. Army Research Office Grant No. W911NF-08-1-0209. We acknowledge the NSF MRSEC program under Grant No. DMR-0820054 for the use of shared equipment. NR 33 TC 12 Z9 12 U1 2 U2 18 PU JOURNAL RHEOLOGY AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0148-6055 J9 J RHEOL JI J. Rheol. PD SEP-OCT PY 2010 VL 54 IS 5 BP 1023 EP 1046 DI 10.1122/1.3474580 PG 24 WC Mechanics SC Mechanics GA 658ED UT WOS:000282472100005 ER PT J AU Macal, CM North, MJ AF Macal, C. M. North, M. J. TI Tutorial on agent-based modelling and simulation SO JOURNAL OF SIMULATION LA English DT Article DE agent-based modelling and simulation; modelling behaviour; social simulation AB Agent-based modelling and simulation (ABMS) is a relatively new approach to modelling systems composed of autonomous, interacting agents. Agent-based modelling is a way to model the dynamics of complex systems and complex adaptive systems. Such systems often self-organize themselves and create emergent order. Agent-based models also include models of behaviour (human or otherwise) and are used to observe the collective effects of agent behaviours and interactions. The development of agent modelling tools, the availability of micro-data, and advances in computation have made possible a growing number of agent-based applications across a variety of domains and disciplines. This article provides a brief introduction to ABMS, illustrates the main concepts and foundations, discusses some recent applications across a variety of disciplines, and identifies methods and toolkits for developing agent models. C1 [Macal, C. M.; North, M. J.] Argonne Natl Lab, Decis & Informat Sci Div, Ctr Complex Adapt Agent Syst Simulat, Argonne, IL 60439 USA. [Macal, C. M.; North, M. J.] Univ Chicago, Computat Inst, Chicago, IL 60637 USA. RP Macal, CM (reprint author), Argonne Natl Lab, Decis & Informat Sci Div, Ctr Complex Adapt Agent Syst Simulat, 9700 S Cass Ave, Argonne, IL 60439 USA. EM macal@anl.gov FU US Department of Energy [DE-AC02-06CH11357] FX This work was supported by the US Department of Energy under contract number DE-AC02-06CH11357. NR 61 TC 293 Z9 302 U1 13 U2 91 PU PALGRAVE MACMILLAN LTD PI BASINGSTOKE PA BRUNEL RD BLDG, HOUNDMILLS, BASINGSTOKE RG21 6XS, HANTS, ENGLAND SN 1747-7778 J9 J SIMUL JI J. Simul. PD SEP PY 2010 VL 4 IS 3 SI SI BP 151 EP 162 DI 10.1057/jos.2010.3 PG 12 WC Computer Science, Interdisciplinary Applications; Operations Research & Management Science SC Computer Science; Operations Research & Management Science GA V29GC UT WOS:000208735900002 ER PT J AU Siebers, P Macal, CM Garnett, J Buxton, D Pidd, M AF Siebers, P. O. Macal, C. M. Garnett, J. Buxton, D. Pidd, M. TI Discrete-event simulation is dead, long live agent-based simulation! SO JOURNAL OF SIMULATION LA English DT Article DE discrete-event simulation; agent-based simulation; panel discussion; the future AB There has been much discussion about why agent-based simulation (ABS) is not as widely used as discrete-event simulation in Operational Research (OR) as it is in neighbouring disciplines such as Computer Science, the Social Sciences or Economics. To consider this issue, a plenary panel was organised at the UK Operational Research Society's Simulation Workshop 2010 (SW10). This paper captures the discussion that took place and addresses the key questions and opportunities regarding ABS that will face the OR community in the future. C1 [Siebers, P. O.] Univ Nottingham, Nottingham NG8 1BB, England. [Macal, C. M.] Argonne Natl Lab, Argonne, IL 60439 USA. [Macal, C. M.] Univ Chicago, Chicago, IL 60637 USA. [Garnett, J.] Univ West Scotland, Paisley, Renfrew, Scotland. [Buxton, D.] dseConsulting LTD, Quorn, England. [Pidd, M.] Univ Lancaster, Lancaster, England. RP Siebers, P (reprint author), Univ Nottingham, Sch Comp Sci, IMA Res Grp, Nottingham NG8 1BB, England. EM pos@cs.nott.ac.uk OI Siebers, Peer-Olaf/0000-0002-0603-5904 NR 10 TC 67 Z9 67 U1 1 U2 14 PU PALGRAVE MACMILLAN LTD PI BASINGSTOKE PA BRUNEL RD BLDG, HOUNDMILLS, BASINGSTOKE RG21 6XS, HANTS, ENGLAND SN 1747-7778 J9 J SIMUL JI J. Simul. PD SEP PY 2010 VL 4 IS 3 SI SI BP 204 EP 210 DI 10.1057/jos.2010.14 PG 7 WC Computer Science, Interdisciplinary Applications; Operations Research & Management Science SC Computer Science; Operations Research & Management Science GA V29GC UT WOS:000208735900007 ER PT J AU Larson, JA English, BC Ugarte, DGD Menard, RJ Hellwinckel, CM West, TO AF Larson, J. A. English, B. C. Ugarte, D. G. De La Torre Menard, R. J. Hellwinckel, C. M. West, T. O. TI Economic and environmental impacts of the corn grain ethanol industry on the United States agricultural sector SO JOURNAL OF SOIL AND WATER CONSERVATION LA English DT Article DE carbon emissions; carbon sequestration; land use; net farm income; soil erosion; tillage intensity ID SOIL ORGANIC-CARBON; SEQUESTRATION; EMISSIONS; TILLAGE; ENERGY; FLUX AB This study evaluated the impacts of increased ethanol production from corn starch on agricultural land use and the environment in the United States. The Policy Analysis System simulation model was used to simulate alternative ethanol production scenarios for 2007 through 2016. Results indicate that increased corn ethanol production had a positive effect on net farm income and economic wellbeing of the US agricultural sector. In addition, government payments to farmers were reduced because of higher commodity prices and cilia iced net farm income. Results also indicate that if Conservation Reserve Program land was converted to crop production in response to higher demand for ethanol in the simulation, individual farmers planted more land in crops, including. corn. With a larger total US land area in crops due to individual farmer cropping choices, total US crop output rose, which decreased crop prices and aggregate net farm income relative to the scenario where increased ethanol production happened without Conservation Reserve Program land. Substantial shifts in land use occurred with corn area expanding throughout the United States, especially in the traditional corn-growing area of the midcontinent region. Production of other crops, such as soybeans and cotton, shifted out of traditional growing areas to accommodate increased corn production. Fertilizer and chemical usage also increased. When conservation tillage adoption was assumed to remain at 2007 levels for the 10-year period, regional tillage intensity, soil erosion, and fossil fuel-based carbon emissions increased, while soil carbon stocks decreased as a result of increased corn production. However, the simulation demonstrated that additional adoption of conservation tillage above 2007 levels mitigated the adverse effects of increased corn production on soil erosion and net carbon emissions to the atmosphere. C1 [Larson, J. A.; English, B. C.; Menard, R. J.] Univ Tennessee, Dept Agr & Resource Econ, Knoxville, TN 37996 USA. [Ugarte, D. G. De La Torre; Hellwinckel, C. M.] Univ Tennessee, Agr Policy Anal Ctr, Knoxville, TN USA. [West, T. O.] Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD USA. [West, T. O.] Univ Tennessee, Biosyst Engn & Soil Sci Dept, Knoxville, TN USA. RP Larson, JA (reprint author), Univ Tennessee, Dept Agr & Resource Econ, Knoxville, TN 37996 USA. RI West, Tristram/C-5699-2013 OI West, Tristram/0000-0001-7859-0125 FU USDA; NASA FX This research was supported by a grant From the USDA Natural Resources Conservation Service entitled, "Economic mid Environmental Impacts on Our Nation's Working Lamb as a Result ut Renewable Energy Production," and a grant from NASA Earth Science Division entitled, "Modeling and Mapping Land Management and Net Carbon Emissions: Decision Support for Biofuels and Carbon Management on U.S. Agricultural Lands." NR 50 TC 11 Z9 11 U1 1 U2 20 PU SOIL WATER CONSERVATION SOC PI ANKENY PA 945 SW ANKENY RD, ANKENY, IA 50023-9723 USA SN 0022-4561 J9 J SOIL WATER CONSERV JI J. Soil Water Conserv. PD SEP-OCT PY 2010 VL 65 IS 5 BP 267 EP 279 DI 10.2489/jswc.65.5.267 PG 13 WC Ecology; Soil Science; Water Resources SC Environmental Sciences & Ecology; Agriculture; Water Resources GA 651ES UT WOS:000281908500009 ER PT J AU Chernyak, VY Chertkov, M Goldberg, DA Turitsyn, K AF Chernyak, Vladimir Y. Chertkov, Michael Goldberg, David A. Turitsyn, Konstantin TI Non-Equilibrium Statistical Physics of Currents in Queuing Networks SO JOURNAL OF STATISTICAL PHYSICS LA English DT Article DE Statistics of non-equilibrium currents; Open queueing networks; Condensation phenomenon; Birth-death processes ID FREE-ENERGY DIFFERENCES; STOCHASTIC DYNAMICS; JACKSON NETWORKS; LARGE DEVIATIONS; STATIONARY DISTRIBUTIONS; FLUCTUATION THEOREM; MARTINGALE APPROACH; CUSTOMER STREAMS; FEEDBACK QUEUE; DECOMPOSITION AB We consider a stable open queuing network as a steady non-equilibrium system of interacting particles. The network is completely specified by its underlying graphical structure, type of interaction at each node, and the Markovian transition rates between nodes. For such systems, we ask the question "What is the most likely way for large currents to accumulate over time in a network ?", where time is large compared to the system correlation time scale. We identify two interesting regimes. In the first regime, in which the accumulation of currents over time exceeds the expected value by a small to moderate amount (moderate large deviation), we find that the large-deviation distribution of currents is universal (independent of the interaction details), and there is no long-time and averaged over time accumulation of particles (condensation) at any nodes. In the second regime, in which the accumulation of currents over time exceeds the expected value by a large amount (severe large deviation), we find that the large-deviation current distribution is sensitive to interaction details, and there is a long-time accumulation of particles (condensation) at some nodes. The transition between the two regimes can be described as a dynamical second order phase transition. We illustrate these ideas using the simple, yet non-trivial, example of a single node with feedback. C1 [Chernyak, Vladimir Y.; Chertkov, Michael; Goldberg, David A.; Turitsyn, Konstantin] LANL, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. [Chernyak, Vladimir Y.; Chertkov, Michael; Goldberg, David A.; Turitsyn, Konstantin] LANL, Div Theoret, Los Alamos, NM 87545 USA. [Chernyak, Vladimir Y.] Wayne State Univ, Dept Chem, Detroit, MI 48202 USA. [Chertkov, Michael] New Mexico Consortium, Los Alamos, NM 87544 USA. [Goldberg, David A.] MIT, Ctr Operat Res, Cambridge, MA 02139 USA. [Turitsyn, Konstantin] LD Landau Theoret Phys Inst, Moscow 119334, Russia. RP Chertkov, M (reprint author), LANL, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. EM chernyak@chem.wayne.edu; chertkov@lanl.gov; dag3141@mit.edu; turitsyn@lanl.gov RI Turitsyn, Konstantin/K-5978-2012; Chertkov, Michael/O-8828-2015; Chernyak, Vladimir/F-5842-2016; OI Turitsyn, Konstantin/0000-0002-7997-8962; Chernyak, Vladimir/0000-0003-4389-4238; Chertkov, Michael/0000-0002-6758-515X FU National Science Foundation [CHE-0808910, CCF-0829945]; National Nuclear Security Administration of the U.S. DoE [DE-AC52-06NA25396]; LANL; DAG FX We are thankful to David Gamarnik for consulting us on many issues related to Queuing Theory, and Sergey Foss, Bill Massey and Alexander Rybko for enlightening conversations. This material is based upon work supported by the National Science Foundation under CHE-0808910 (VC) and CCF-0829945 (MC via NMC). The work at LANL was carried out under the auspices of the National Nuclear Security Administration of the U.S. DoE at LANL under Contract No. DE-AC52-06NA25396. KT acknowledges support of an Oppenheimer Fellowship at LANL, and DAG work on the project was a part of his summer internship (GRA program) at LANL. NR 75 TC 9 Z9 9 U1 0 U2 4 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0022-4715 J9 J STAT PHYS JI J. Stat. Phys. PD SEP PY 2010 VL 140 IS 5 BP 819 EP 845 DI 10.1007/s10955-010-0018-5 PG 27 WC Physics, Mathematical SC Physics GA 637KK UT WOS:000280816000001 ER PT J AU Amat, F Comolli, LR Moussavi, F Smit, J Downing, KH Horowitz, M AF Amat, Fernando Comolli, Luis R. Moussavi, Farshid Smit, John Downing, Kenneth H. Horowitz, Mark TI Subtomogram alignment by adaptive Fourier coefficient thresholding SO JOURNAL OF STRUCTURAL BIOLOGY LA English DT Article DE Electron tomography; Subtomogram averaging; Thresholding; Constrained cross-correlation ID CRYOELECTRON TOMOGRAPHY; ELECTRON-MICROSCOPY; MOLECULAR ARCHITECTURE; 3D; CLASSIFICATION; RECONSTRUCTION; REFINEMENT AB In the past few years, three-dimensional (3D) subtomogram alignment has become an important tool in cryo-electron tomography (CET). This technique allows one to produce higher resolution images of structures which can not be reconstructed using single-particle methods. Building on previous work, we present a new dissimilarity measure between subtomograms that works well for the noisy images that often occur in CET images. A technique that is more robust to noise provides the ability to analyze macromolecules in thicker samples such as whole cells or lower the defocus in thinner samples to push the first zero of the Contrast Transfer Function (CTF). Our method, Threshold Constrained Cross-Correlation (TCCC), uses statistics of the noise to automatically select only a small percentage of the Fourier coefficients to compute the cross-correlation, which has two main advantages: first, it reduces the influence of the noise by looking at only those peaks dominated by signal; and second, it avoids the missing wedge normalization problem since we consider the same number of coefficients for all possible pairs of subtomograms. We present results with synthetic and real data to compare our approach with other existing methods under different SNR and missing wedge conditions, and show that TCCC improves alignment results for datasets with SNR < 0.1. We have made our source code freely available for the community. (C) 2010 Elsevier Inc. All rights reserved. C1 [Amat, Fernando; Moussavi, Farshid; Horowitz, Mark] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA. [Comolli, Luis R.; Downing, Kenneth H.] Lawrence Berkeley Natl Labs, Div Life Sci, Berkeley, CA USA. [Smit, John] Univ British Columbia, Inst Life Sci, Dept Microbiol & Immunol, Vancouver, BC V5Z 1M9, Canada. RP Amat, F (reprint author), Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA. EM famat@stanford.edu; LRComolli@lbl.gov; farshid1@stanford.edu; jsmit@interchange.ubc.ca; khdowning@lbl.gov; horowitz@stanford.edu FU Department of Energy Office of Basic Research [DE-AC02-05CH11231] FX This work was supported by the Department of Energy Office of Basic Research grant under contract number DE-AC02-05CH11231. The authors thank Professors Lucy Shapiro and Harley McAdams of Stanford for their support. NR 45 TC 18 Z9 18 U1 1 U2 3 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1047-8477 J9 J STRUCT BIOL JI J. Struct. Biol. PD SEP PY 2010 VL 171 IS 3 BP 332 EP 344 DI 10.1016/j.jsb.2010.05.013 PG 13 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 635TS UT WOS:000280680100010 PM 20621702 ER PT J AU Chua, TK Seetharaman, J Kasprzak, JM Ng, C Patel, BKC Love, C Bujnicki, JM Sivaraman, J AF Chua, Teck Khiang Seetharaman, J. Kasprzak, Joanna M. Ng, Cherlyn Patel, Bharat K. C. Love, Christopher Bujnicki, Janusz M. Sivaraman, J. TI Crystal structure of a fructokinase homolog from Halothermothrix orenii SO JOURNAL OF STRUCTURAL BIOLOGY LA English DT Article DE Hore_18220; Fructokinase; FRY homolog; Fructose; ATP; Structure ID KINASE; RIBOKINASE; SUBSTRATE; ALIGNMENT; CLONING AB Fructokinase (FRK; EC 2.7.1.4) catalyzes the phosphorylation of D-fructose to D-fructose 6-phosphate (F6P). This irreversible and near rate-limiting step is a central and regulatory process in plants and bacteria, which channels fructose into a metabolically active state for glycolysis. Towards understanding the mechanism of FRY, here we report the crystal structure of a FRK homolog from a thermohalophilic bacterium Halothermothrix orenii (Hore_18220 in sequence databases). The structure of the Hore_18220 protein reveals a catalytic domain with a Rossmann-like fold and a beta-sheet "lid" for dimerization. Based on comparison of Hore_18220 to structures of related proteins, we propose its mechanism of action, in which the lid serves to regulate access to the substrate binding sites. Close relationship of Hore_18220 and plant FRK enzymes allows us to propose a model for the structure and function of FRKs. (C) 2010 Elsevier Inc. All rights reserved. C1 [Chua, Teck Khiang; Ng, Cherlyn; Sivaraman, J.] Natl Univ Singapore, Dept Biol Sci, Singapore 117543, Singapore. [Seetharaman, J.] Brookhaven Natl Lab, Beamline X4, Upton, NY 11973 USA. [Kasprzak, Joanna M.; Bujnicki, Janusz M.] Adam Mickiewicz Univ Poznan, Fac Biol, Inst Mol Biol & Biotechnol, Bioinformat Lab, PL-61614 Poznan, Poland. [Patel, Bharat K. C.; Love, Christopher] Griffith Univ, Sch Biomol & Phys Sci, Microbial Gene Res & Resources Facil, Brisbane, Qld 4111, Australia. [Bujnicki, Janusz M.] Int Inst Mol & Cell Biol, Lab Bioinformat & Prot Engn, PL-02190 Warsaw, Poland. RP Sivaraman, J (reprint author), Natl Univ Singapore, Dept Biol Sci, 14 Sci Dr 4, Singapore 117543, Singapore. EM dbsjayar@nus.edu.sg RI Love, Christopher/E-3503-2012; Sivaraman, J/H-8028-2012; Griffith University, QMNC/I-5498-2013; OI Patel, Bharat/0000-0002-5332-1858 FU Academic Research Fund (ARF) [R154000245112]; National University of Singapore (NUS); Polish Ministry of Science [188/N-DFG/2008/0]; NIH [1R01 GM081680-01]; Griffith University FX Data for this study were measured at beamlines X12C and X29 of the National Synchrotron Light Source, Brookhaven National Laboratories (BNL). We thank Dr. Anand Saxena (BNL) for assistance in data collection. J.S. acknowledges research support from the Academic Research Fund (ARF) Grant No. R154000245112, National University of Singapore (NUS). J.M.K and J.M.B were supported by the Polish Ministry of Science (Grant 188/N-DFG/2008/0) and by the NIH (Grant 1R01 GM081680-01). BKCP acknowledges the support from the Griffith University Research Grants scheme. We thank Mr. Sun Qingxiang for his assistance in the final refinement of the model. Chua Teck Khiang is a Ph.D. student in receipt of a research scholarship from the National University of Singapore (NUS). NR 22 TC 8 Z9 8 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 1047-8477 J9 J STRUCT BIOL JI J. Struct. Biol. PD SEP PY 2010 VL 171 IS 3 BP 397 EP 401 DI 10.1016/j.jsb.2010.05.007 PG 5 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 635TS UT WOS:000280680100017 PM 20493950 ER PT J AU Titarenko, V Titarenko, S Withers, PJ De Carlo, F Xiao, XH AF Titarenko, Valeriy Titarenko, Sofya Withers, Philip J. De Carlo, Francesco Xiao, Xianghui TI Improved tomographic reconstructions using adaptive time-dependent intensity normalization SO JOURNAL OF SYNCHROTRON RADIATION LA English DT Article DE attenuation tomography; flat-field correction; intensity normalization; ring artefacts; synchrotron X-rays; parallel beam. ID ADVANCED-PHOTON-SOURCE; RING ARTIFACTS; BEAMLINE 2-BM; MICROTOMOGRAPHY; REMOVAL AB The first processing step in synchrotron-based micro-tomography is the normalization of the projection images against the background. also referred to as a white field Owing to time-dependent variations in illumination and defects in detection sensitivity, the white field is different from the projection background. In this case standard normalization methods introduce ring and wave artefacts into the resulting three-dimensional reconstruction. In this paper the authors propose a new adaptive technique accounting for these variations and allowing one to obtain cleaner normalized data and to suppress ring and wave artefacts. The background is modelled by the product of two time-dependent terms representing the illumination and detection stages These terms are written as unknown functions, one scaled and shifted along a fixed direction (describing the illumination term) and one translated by an unknown two-dimensional vector (describing the detection term) The proposed method is applied to two sets (a stem Salix vanegata and a zebrafish Damo rem) acquired at the parallel beam of the micro-tomography station 2-BM at the Advanced Photon Source showing significant reductions in both ring and wave artefacts In principle the method could be used to correct for time-dependent phenomena that affect other tomographic imaging geometries such as cone beam laboratory X-ray computed tomography. C1 [Titarenko, Valeriy; Withers, Philip J.] Univ Manchester, Sch Mat, Henry Moseley Xray Imaging Facil, Manchester M13 9PL, Lancs, England. [Titarenko, Sofya] Moscow MV Lomonosov State Univ, Fac Phys, Dept Math, Moscow 119991, Russia. [De Carlo, Francesco; Xiao, Xianghui] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. RP Titarenko, V (reprint author), Univ Manchester, Sch Mat, Henry Moseley Xray Imaging Facil, Grosvenor St, Manchester M13 9PL, Lancs, England. RI Withers, Philip/A-6760-2009 FU Jake Gittlen Cancer Research Foundation [17033] FX The authors would like to thank Dr Walter H Schroder (Institute Phytosphere, Forschungszentrum Julich, Germany) who provided the stem sample Sah.v variegata, Dr Keith C Cheng, Darin Clark (Division of Experimental Pathology, Jake Gittlen Cancer Research Foundation, Penn State Cancer Institute, Penn State College of Medicine. Hershey, PA 17033, USA) and Dr Patrick La Riviere (Department of Radiology, The University of Chicago, USA) for the possibility to use a preliminary reconstruction of the zebrafish sample Damo rerto (the research is supported by the grant R24RR017441, Webbased Atlas of Zebrafish Microanatomy as a Community Resource. from NIH). 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-ACO2-060-111357 Valeny Titarenko is grateful to STFC for funding and Sofya Titarenko to EPSRC for funds through a 'Collaborating for Success' grant. NR 24 TC 24 Z9 24 U1 1 U2 3 PU WILEY-BLACKWELL PUBLISHING, INC PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0909-0495 J9 J SYNCHROTRON RADIAT JI J. Synchrot. Radiat. PD SEP PY 2010 VL 17 BP 689 EP 699 DI 10.1107/S0909049510024908 PN 5 PG 11 WC Instruments & Instrumentation; Optics; Physics, Applied SC Instruments & Instrumentation; Optics; Physics GA 653IR UT WOS:000282083300014 PM 20724791 ER PT J AU Raj, PM Lee, BW Balaraman, D Kang, NK Lance, MJ Meyer, H Tummala, RR AF Raj, Pulugurtha Markondeya Lee, Baik-Woo Balaraman, Devarajan Kang, Nam-Kee Lance, Michael J. Meyer, Harry Tummala, Rao R. TI Hydrothermal Barium Titanate Thin-Film Characteristics and their Suitability as Decoupling Capacitors SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID BATIO3 FINE POWDERS; DIELECTRIC-PROPERTIES; LATTICE HYDROXYL; PARTICLES; MICROSTRUCTURE; MECHANISMS; CERAMICS; DEFECTS AB System integration and miniaturization with higher performance is driving thin-film capacitor technologies toward higher capacitance densities with CMOS or organic package-compatible processes for noise-free power supply, power conversion, and efficient power management. The hydrothermal route can deposit crystalline ferroelectric films at low temperatures of < 150 degrees C. It is hence an attractive route for integrating high-permittivity (K) thin-film capacitors on both organic and silicon substrates. However, hydrothermal films are not commercialized so far because of their inferior insulation characteristics. Hydroxyl groups are attributed to high leakage currents, temperature-dependent properties, and lower breakdown voltages. This paper discusses the dielectric characteristics such as capacitance density, leakage current, and temperature coefficient of capacitance of hydrothermal barium titanate films and correlates them with the water and OH groups in the film, morphology, stoichiometry, and crystallinity. With thermal treatment, majority of the OH groups can be removed leading to improved insulation characteristics. The room temperature I-V characteristics agreed with ionic conduction models for films baked at 160 degrees C. A brief perspective is provided on the suitability of hydrothermal thin-film capacitors for decoupling applications. C1 [Raj, Pulugurtha Markondeya; Lee, Baik-Woo; Balaraman, Devarajan; Tummala, Rao R.] Georgia Inst Technol, Syst Packaging Res Ctr 3D, Atlanta, GA 30332 USA. [Kang, Nam-Kee] Korea Elect Technol Inst, Elect Mat & Packaging Res Ctr, Songnam 463816, South Korea. [Lance, Michael J.; Meyer, Harry] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Raj, PM (reprint author), Georgia Inst Technol, Syst Packaging Res Ctr 3D, Atlanta, GA 30332 USA. EM raj@ece.gatech.edu RI Lance, Michael/I-8417-2016 OI Lance, Michael/0000-0001-5167-5452 FU Korean Electronics Technology Institute (KETI); National Science Foundation through the Packaging Research Center as an NSF-Engineering Research Center; U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy FX This work was partially supported by the Korean Electronics Technology Institute (KETI) and the National Science Foundation through the Packaging Research Center as an NSF-Engineering Research Center. The research at the Oak Ridge National Laboratory's High Temperature Materials Laboratory was sponsored by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program. NR 34 TC 6 Z9 6 U1 0 U2 10 PU WILEY-BLACKWELL PUBLISHING, INC PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD SEP PY 2010 VL 93 IS 9 BP 2764 EP 2770 DI 10.1111/j.1551-2916.2010.03775.x PG 7 WC Materials Science, Ceramics SC Materials Science GA 647YU UT WOS:000281657600074 ER PT J AU Wang, H Lin, HT Wereszczak, AA AF Wang, Hong Lin, Hua-Tay Wereszczak, Andrew A. TI Strength Properties of Poled Lead Zirconate Titanate Subjected to Biaxial Flexural Loading in High Electric Field SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID FRACTURE-TOUGHNESS; PIEZOELECTRIC CERAMICS; MULTILAYER ACTUATORS; FERROELECTRIC CERAMICS; CRACK; PIEZOCERAMICS; DESTRUCTION; MECHANISMS; CRITERION; BEHAVIOR AB The mechanical strength of poled lead zirconate titanate (PZT) has been studied using ball-on-ring (BoR) biaxial flexure tests with a high electric field applied concurrently. Both the as-received and the aged PZT specimens were tested. The Weibull plot and a 95% confidence ratio ring were used to characterize the responses of mechanical strength under various electric loading conditions. A fractographical study has been conducted at the same time, and the fracture origins or strength-limiting flaws of tested PZT specimens have been identified and characterized accordingly. The fracture toughness was further estimated to correlate with the obtained fracture stresses and flaws. It has been observed that electric field affects the mechanical strength of poled PZT, and the degree of the effect depends on the sign and magnitude of the applied electric field. Within the examined electric field range of -3 to +3 times the coercive field, an increasing electric field resulted in a rapid strength decrease and a sharp increase with the turning point around the negative coercive field. Surface-located volume-distributed flaws were identified to be strength limiting for this PZT material. Variations of the mechanical strength with the electric field were believed to be related to the domain switching and amount of switchable domains. An aging effect on the mechanical strength of poled PZT could be significant, especially in the OC condition. These results and observations have the potential to serve probabilistic reliability analysis and design optimization of multilayer PZT piezo actuators. C1 [Wang, Hong; Lin, Hua-Tay; Wereszczak, Andrew A.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. RP Wang, H (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. EM wangh@ornl.gov RI Wereszczak, Andrew/I-7310-2016; Wang, Hong/O-1987-2016 OI Wereszczak, Andrew/0000-0002-8344-092X; Wang, Hong/0000-0002-0173-0545 FU U.S. Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies with UT-Battelle, LLC [DE-AC05-00OR22725] FX This research was sponsored by the U.S. Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies, as part of the Propulsion Materials Program, under contract DE-AC05-00OR22725 with UT-Battelle, LLC. NR 52 TC 7 Z9 7 U1 1 U2 11 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD SEP PY 2010 VL 93 IS 9 BP 2843 EP 2849 DI 10.1111/j.1551-2916.2010.03800.x PG 7 WC Materials Science, Ceramics SC Materials Science GA 647YU UT WOS:000281657600085 ER PT J AU Pirnat, U Valant, M Radmilovic, V AF Pirnat, Ursa Valant, Matjaz Radmilovic, Velimir TI Formation Kinetics of a Bi3Nb1-xTaxO7 Fluorite-Type Solid Solution and Thermodynamic Stability of the Bi3TaO7 End Member SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID OXIDE-ION CONDUCTORS; DIELECTRIC-PROPERTIES; ELECTRICAL-CONDUCTIVITY; BI2O3-NB2O5; SYSTEM; RECONSTRUCTION; BI2O3-TA2O5; CHEMISTRY; BI3NBO7 AB Analysis of kinetic characteristics of the incommensurate-commensurate transformation in the Bi3Nb1-xTaxO7 system with a fluorite-like crystal structure enabled us to define the compositional and thermal stability ranges of the commensurate tetragonal polymorph. We showed that the tetragonal polymorph across the entire homogeneity range is isostructural to the Bi3NbO7 end member. The kinetics of the transformation from the cubic incommensurate to the tetragonal commensurate phase decreases with an increase in Ta concentration within the Bi3Nb1-xTaxO7 system. The formation studies indicate that the tetragonal Bi3TaO7 is thermodynamically stable; however, its formation via the metastable incommensurate-cubic phase is suppressed. C1 [Pirnat, Ursa; Valant, Matjaz] Univ Nova Gorica, Mat Res Lab, Nova Gorica 5000, Slovenia. [Pirnat, Ursa] Jozef Stefan Inst, Adv Mat Dept, Ljubljana 1000, Slovenia. [Radmilovic, Velimir] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Elect Microscopy, Berkeley, CA 94720 USA. RP Valant, M (reprint author), Univ Nova Gorica, Mat Res Lab, Nova Gorica 5000, Slovenia. EM matjaz.valant@ung.si OI Valant, Matjaz/0000-0003-4842-5676 FU Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy [DE-AC02-05CH11231] FX The authors thank Dr. Paul McGuniness for valuable discussions. The HREM (exit wave reconstruction) studies were supported 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-AC02-05CH11231. NR 32 TC 2 Z9 2 U1 1 U2 12 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD SEP PY 2010 VL 93 IS 9 BP 2909 EP 2914 DI 10.1111/j.1551-2916.2010.03819.x PG 6 WC Materials Science, Ceramics SC Materials Science GA 647YU UT WOS:000281657600095 ER PT J AU Diyabalanage, HVK Nakagawa, T Shrestha, RP Semelsberger, TA Davis, BL Scott, BL Burrell, AK David, WIF Ryan, KR Jones, MO Edwards, PP AF Diyabalanage, Himashinie V. K. Nakagawa, Tessui Shrestha, Roshan P. Semelsberger, Troy A. Davis, Benjamin L. Scott, Brian L. Burrell, Anthony K. David, William I. F. Ryan, Kate R. Jones, Martin Owen Edwards, Peter P. TI Potassium(I) Amidotrihydroborate: Structure and Hydrogen Release SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID AMMONIA-BORANE DEHYDROGENATION; N-H COMPOUNDS; THERMAL-DECOMPOSITION; STORAGE MATERIAL; LITHIUM HYDRIDE; AMIDOBORANES; ALKALI; BONDS; NMR AB Potassium(I) amidotrihydroborate (KNH(2)BH(3)) is a newly developed potential hydrogen storage material representing a completely different structural motif within the alkali metal amidotrihydroborate group. Evolution of 6.5 wt % hydrogen starting at temperatures as low as 80 degrees C is observed and shows a significant change in the hydrogen release profile, as compared to the corresponding lithium and sodium compounds. Here we describe the synthesis, structure, and hydrogen release characteristics of KNH(2)BH(3). C1 [Diyabalanage, Himashinie V. K.; Nakagawa, Tessui; Shrestha, Roshan P.; Semelsberger, Troy A.; Davis, Benjamin L.; Scott, Brian L.; Burrell, Anthony K.] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA. [David, William I. F.; Jones, Martin Owen] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. [David, William I. F.; Ryan, Kate R.; Jones, Martin Owen; Edwards, Peter P.] Univ Oxford, Inorgan Chem Lab, Oxford OX1 0ER, England. RP Burrell, AK (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, Mail Stop J5I4, Los Alamos, NM 87545 USA. EM Burrell@lanl.gov RI Nakagawa, Tessui/C-3553-2014; Davis, Benjamin /I-7897-2015; Scott, Brian/D-8995-2017; OI Nakagawa, Tessui/0000-0001-6340-756X; Scott, Brian/0000-0003-0468-5396; Davis, Benjamin/0000-0001-5439-0751 FU U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy; STFC; EPSRC; United Kingdom Sustainable Hydrogen Energy Consortium (UK-SHEC) FX We acknowledge the support of the IPHE collaboration "Combination of Amine Boranes with MgH2 & LiNH2 for High Capacity Reversible Hydrogen Storage" in the development of this work and The U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy for providing funding. Authros from the United Kingdom acknowledge the support of the STFC, EPSRC, and the United Kingdom Sustainable Hydrogen Energy Consortium (UK-SHEC). NR 30 TC 74 Z9 76 U1 2 U2 25 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 SEP 1 PY 2010 VL 132 IS 34 BP 11836 EP 11837 DI 10.1021/ja100167z PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 643LA UT WOS:000281296700005 PM 20687546 ER PT J AU Yang, YH Ramelot, TA McCarrick, RM Ni, SS Feldmann, EA Cort, JR Wang, HA Ciccosanti, C Jiang, M Janjua, H Acton, TB Xiao, R Everett, JK Montelione, GT Kennedy, MA AF Yang, Yunhuang Ramelot, Theresa A. McCarrick, Robert M. Ni, Shuisong Feldmann, Erik A. Cort, John R. Wang, Huang Ciccosanti, Colleen Jiang, Mei Janjua, Haleema Acton, Thomas B. Xiao, Rong Everett, John K. Montelione, Gaetano T. Kennedy, Michael A. TI Combining NMR and EPR Methods for Homodimer Protein Structure Determination SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID HIGH-RESOLUTION STRUCTURE; DISTANCE MEASUREMENTS; MAGNETIC-RESONANCE; COMPLEX; DEER; CONSTRAINTS; 4-PULSE; DOMAIN; SERIES AB There is a general need to develop more powerful and more robust methods for structural characterization of homodimers, homo-oligomers, and multiprotein complexes using solution-state NMR methods. In recent years, there has been increasing emphasis on integrating distinct and complementary methodologies for structure determination of multiprotein complexes. One approach not yet widely used is to obtain intermediate and long-range distance constraints from paramagnetic relaxation enhancements (PRE) and electron paramagnetic resonance (EPR)-based techniques such as double electron electron resonance (DEER), which, when used together, can provide supplemental distance constraints spanning to 10-70 angstrom. In this Communication, we describe integration of PRE and DEER data with conventional solution-state nuclear magnetic resonance (NMR) methods for structure determination of Dsy0195, a homodimer (62 amino acids per monomer) from Desulfitobacterium hafniense. Our results indicate that combination of conventional NMR restraints with only one or a few DEER distance constraints and a small number of PRE constraints is sufficient for the automatic NMR-based structure determination program CYANA to build a network of interchain nuclear Overhauser effect constraints that can be used to accurately define both the homodimer interface and the global homodimer structure. The use of DEER distances as a source of supplemental constraints as described here has virtually no upper molecular weight limit, and utilization of the PRE constraints is limited only by the ability to make accurate assignments of the protein amide proton and nitrogen chemical shifts. C1 [Yang, Yunhuang; Ramelot, Theresa A.; McCarrick, Robert M.; Ni, Shuisong; Feldmann, Erik A.; Kennedy, Michael A.] Miami Univ, Dept Chem & Biochem, Oxford, OH 45056 USA. [Yang, Yunhuang; Ramelot, Theresa A.; Feldmann, Erik A.; Cort, John R.; Wang, Huang; Ciccosanti, Colleen; Jiang, Mei; Janjua, Haleema; Acton, Thomas B.; Xiao, Rong; Everett, John K.; Montelione, Gaetano T.; Kennedy, Michael A.] NE Struct Genom Consortium, Piscataway, NJ 08854 USA. [Cort, John R.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. [Wang, Huang; Ciccosanti, Colleen; Jiang, Mei; Janjua, Haleema; Acton, Thomas B.; Xiao, Rong; Everett, John K.; Montelione, Gaetano T.] Rutgers State Univ, Dept Mol Biol & Biochem, Ctr Adv Biotechnol & Med, Piscataway, NJ 08854 USA. [Montelione, Gaetano T.] Univ Med & Dent New Jersey, Dept Biochem, Robert Wood Johnson Med Sch, Piscataway, NJ 08854 USA. RP Kennedy, MA (reprint author), Miami Univ, Dept Chem & Biochem, Oxford, OH 45056 USA. EM kennedm4@muohio.edu RI yang, yunhuang/F-7162-2012 FU National Institute of General Medical Sciences [U54-GM074958]; National Science Foundation [NSF (MRI-0722403)]; Bruker Biospin, Miami University; Ohio Board of Reagents; U.S. Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory FX This project was supported by the National Institute of General Medical Sciences, grant no. U54-GM074958; National Science Foundation, grant no. NSF (MRI-0722403); Bruker Biospin, Miami University, and Ohio Board of Reagents. A portion of the NMR experiments were performed in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the U.S. Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. NR 23 TC 20 Z9 21 U1 1 U2 24 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 SEP 1 PY 2010 VL 132 IS 34 BP 11910 EP 11913 DI 10.1021/ja105080h PG 4 WC Chemistry, Multidisciplinary SC Chemistry GA 643LA UT WOS:000281296700034 PM 20698532 ER PT J AU Bowen, BP Northen, TR AF Bowen, Benjamin P. Northen, Trent R. TI Dealing with the Unknown: Metabolomics and Metabolite Atlases SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY LA English DT Article ID SPECTROMETRY-BASED METABOLOMICS; TANDEM MASS-SPECTROMETRY; LC-MS; PLANT METABOLOMICS; IDENTIFICATION; RESOLUTION; DATABASE; EXPRESSION; ANNOTATION; SEPARATION AB Metabolornics is the comprehensive profiling of the small molecule composition of a biological sample. Since metabolites are often the indirect products of gene expression, this approach is being used to provide new insights into a variety of biological systems (clinical, bioenergy, etc.). A grand challenge for metabolomics is the complexity of the data, which often include many experimental artifacts. This is compounded by the tremendous chemical diversity of metabolites. Identification of each uncharacterized metabolite is in many ways its own puzzle (compared with proteomics, which is based on predictable fragmentation patterns of polypeptides). Therefore, effective data reduction/prioritization strategies are critical for this rapidly developing field. Here we review liquid chromatography electrospray ionization mass spectrometry (LC/MS)-based metabolomics, methods for feature finding/prioritization, approaches for identifying unknown metabolites, and construction of method specific 'Metabolite Atlases'. (J Am Soc Mass Spectrom 2010, 21, 1471-1476) (C) 2010 Published by Elsevier Inc. on behalf of American Society for Mass Spectrometry C1 [Bowen, Benjamin P.; Northen, Trent R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Dept GTL Bioenergy & Struct Biol, Berkeley, CA 94720 USA. RP Northen, TR (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Dept GTL Bioenergy & Struct Biol, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM TRNorthen@lbl.gov RI Northen, Trent/K-3139-2012; OI Northen, Trent/0000-0001-8404-3259 FU Department of Energy [DE-AC02-05CH11231]; California Breast Cancer Research Program [151B-0063] FX The authors gratefully acknowledge support from the Department of Energy [DE-AC02-05CH11231] and from the California Breast Cancer Research Program [151B-0063]. They also thank Richard Baran, Chris Petzold, and Paul Wilmes for useful comments. NR 51 TC 66 Z9 67 U1 3 U2 45 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 1044-0305 J9 J AM SOC MASS SPECTR JI J. Am. Soc. Mass Spectrom. PD SEP PY 2010 VL 21 IS 9 BP 1471 EP 1476 DI 10.1016/j.jasms.2010.04.003 PG 6 WC Biochemical Research Methods; Chemistry, Analytical; Chemistry, Physical; Spectroscopy SC Biochemistry & Molecular Biology; Chemistry; Spectroscopy GA 648QT UT WOS:000281709700001 PM 20452782 ER PT J AU Zhang, YY Klein, SA AF Zhang, Yunyan Klein, Stephen A. TI Mechanisms Affecting the Transition from Shallow to Deep Convection over Land: Inferences from Observations of the Diurnal Cycle Collected at the ARM Southern Great Plains Site SO JOURNAL OF THE ATMOSPHERIC SCIENCES LA English DT Article ID HIGH-RESOLUTION SIMULATION; GENERAL-CIRCULATION MODEL; MASS-FLUX SCHEME; CUMULUS CONVECTION; WATER-VAPOR; COLD POOLS; LIFE-CYCLE; PART I; PRECIPITATION; PARAMETERIZATION AB Summertime observations for 11 yr from the Atmospheric Radiation Measurement (ARM) Climate Research Facility Southern Great Plains (SGP) site are used to investigate mechanisms controlling the transition from shallow to deep convection over land. It is found that a more humid environment immediately above the boundary layer is present before the start of late afternoon heavy precipitation events. The higher moisture content is brought by wind from the south. Greater boundary layer inhomogeneity in moist static energy, temperature, moisture, and horizontal wind before precipitation begins is correlated to larger rain rates at the initial stage of precipitation. In an examination of afternoon rain statistics, higher relative humidity above the boundary layer is correlated to an earlier onset and longer duration of afternoon precipitation events, whereas greater boundary layer inhomogeneity and atmospheric instability in the 2-4-km layer above the surface are positively correlated to the total rain amount and the maximum rain rate. Although other interpretations may be possible, these observations are consistent with theories for the transition from shallow to deep convection that emphasize the role of a moist lower free troposphere and boundary layer inhomogeneity. C1 [Zhang, Yunyan] Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94551 USA. RP Zhang, YY (reprint author), Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Mail Code L-103,POB 808, Livermore, CA 94551 USA. EM zhang25@llnl.gov RI Zhang, Yunyan/F-9783-2011; Klein, Stephen/H-4337-2016 OI Klein, Stephen/0000-0002-5476-858X FU U.S. Department of Energy's Atmospheric System Research; Office of Science, Office of Biological and Environmental Research program; DOE by Lawrence Livermore National Security, LLC [DE-AC52-07NA27344] FX The authors sincerely thank Larry Berg for providing the index for shallow cumulus days, Shaocheng Xie for providing codes to calculate CAPE and CIN, and Renata McCoy for discussions on the CMBE data. The authors thank Brian Mapes, Peter Caldwell, and Shaocheng Xie for comments on the manuscript and Bjorn Stevens, Chris Bretherton, and Robert Pincus for discussions. The authors also appreciate the comments of three anonymous reviewers, which helped to improve the manuscript. Data from the U.S. Department of Energy as part of the Atmospheric Radiation Measurement (ARM) Climate Research Facility Southern Great Plains site were used. The Oklahoma Mesonet data were used. This work was supported primarily by the U.S. Department of Energy's Atmospheric System Research, an Office of Science, Office of Biological and Environmental Research program; Lawrence Livermore National Laboratory is operated for the DOE by Lawrence Livermore National Security, LLC under Contract DE-AC52-07NA27344. NR 53 TC 67 Z9 67 U1 1 U2 23 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0022-4928 J9 J ATMOS SCI JI J. Atmos. Sci. PD SEP PY 2010 VL 67 IS 9 BP 2943 EP 2959 DI 10.1175/2010JAS3366.1 PG 17 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 655LL UT WOS:000282251400013 ER PT J AU El Bedewi, A El Anany, G El Mofty, M AF El Bedewi, A. El Anany, G. El Mofty, M. TI Role of Synchrotron infra red microspectroscopy in studying epidermotropism of cutaneous T-cell lymphoma SO JOURNAL OF THE EUROPEAN ACADEMY OF DERMATOLOGY AND VENEREOLOGY LA English DT Article DE DNA; epidermotropism; infrared microspectroscopy; mycosis fungoides; RNA; Synchrotron ID SPECTROSCOPY; LYMPHOCYTES; CLONALITY AB Background The molecular mechanisms of epidermotropism in mycosis fungoides (MF) are not well understood to date. Objectives The aim of this study was to differentiate between epidermal and dermal lymphocytes within the skin of MF patients. Methods This study was done on 10 MF patients with a mean age of 50 years diagnosed clinically in the Department of Dermatology, Cairo University, Egypt. A 6 mm biopsy was taken from each patient in order to confirm the diagnosis. Skin biopsies were cut, put on low e-slides and then stained with H&E. Further examination with Synchrotron infrared (IR) microspectroscopy was done in National Synchrotron Light Source - Brookhaven National Laboratory, New York, USA. Immunophenotyping using antibodies CD3, CD4, CD8, CD20 and CD30 was also done. Statistical analysis was done by Student's t-test and cluster analysis. Results Both epidermal and dermal lymphocytes were clustered separately. Also, Amide I and RNA and DNA within the lymphocytes were significantly different between the epidermis and the dermis. Conclusions The biochemical analysis of protein, RNA and DNA with Synchrotron IR microspectroscopy is a promising tool for studying epidermotropism in cutaneous T-cell lymphoma. C1 [El Bedewi, A.] Egyptian Atom Energy Author, Natl Ctr Radiat Res & Technol, Cairo, Egypt. [El Bedewi, A.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. [El Anany, G.; El Mofty, M.] Cairo Univ, Fac Med, Dept Dermatol, Cairo, Egypt. RP El Bedewi, A (reprint author), Egyptian Atom Energy Author, Natl Ctr Radiat Res & Technol, Cairo, Egypt. EM aelbedewi@hotmail.com FU US Department of Energy at the National Synchrotron Light Source-Brookhaven National Laboratory, NY, USA FX Special thanks to the US Department of Energy and to our colleagues Lisa Miller, Ariane Kretlow, Simone Park, at the National Synchrotron Light Source-Brookhaven National Laboratory, NY, USA for supporting this work. NR 12 TC 0 Z9 0 U1 1 U2 1 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0926-9959 J9 J EUR ACAD DERMATOL JI J. Eur. Acad. Dermatol. Venereol. PD SEP PY 2010 VL 24 IS 9 BP 1047 EP 1050 DI 10.1111/j.1468-3083.2010.03582.x PG 4 WC Dermatology SC Dermatology GA 635GK UT WOS:000280643400009 PM 20202059 ER PT J AU Jones, RE Zimmerman, JA AF Jones, Reese E. Zimmerman, Jonathan A. TI The construction and application of an atomistic J-integral via Hardy estimates of continuum fields SO JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS LA English DT Article DE Fracture mechanics; Molecular simulation; J-integral ID MOLECULAR-DYNAMICS SIMULATIONS; COMPUTER-SIMULATION; SHOCK-WAVES; FRACTURE; STRESS; SOLIDS; CRACKS AB In this work we apply a Lagrangian kernel-based estimator of continuum fields to atomic data in order to estimate the J-integral for the analysis of cracks and dislocations. We show that this method has the properties of: consistency between the energy, stress and deformation fields; path independence of the contour integrals of the Eshelby stress; and excellent correlation with linear elastic fracture mechanics theory for appropriately constructed simulations. We discuss the appropriate reference configuration and reference energy for this type of analysis. Lastly, we use canonical examples to demonstrate that the proposed method is a direct and rational approach for estimating the configurational forces on atomic defects. Published by Elsevier Ltd. C1 [Jones, Reese E.; Zimmerman, Jonathan A.] Sandia Natl Labs, Mech Mat Dept, Livermore, CA 94551 USA. RP Jones, RE (reprint author), Sandia Natl Labs, Mech Mat Dept, POB 969, Livermore, CA 94551 USA. EM rjones@sandia.gov; jzimmer@sandia.gov RI Zimmerman, Jonathan/A-8019-2012 FU United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX The authors would like to acknowledge substantial interactions with James W. Foulk III. Alejandro Mota, and Aidan P. Thompson and thank them for their help. Sandia is a multi-program 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 41 TC 10 Z9 10 U1 1 U2 8 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0022-5096 EI 1873-4782 J9 J MECH PHYS SOLIDS JI J. Mech. Phys. Solids PD SEP PY 2010 VL 58 IS 9 BP 1318 EP 1337 DI 10.1016/j.jmps.2010.06.001 PG 20 WC Materials Science, Multidisciplinary; Mechanics; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA 652DY UT WOS:000281982800010 ER PT J AU Wang, H Dinwiddie, RB Porter, WD AF Wang, Hsin Dinwiddie, Ralph B. Porter, Wallace D. TI Development of a Thermal Transport Database for Air Plasma Sprayed ZrO2-Y2O3 Thermal Barrier Coatings SO JOURNAL OF THERMAL SPRAY TECHNOLOGY LA English DT Article DE laser flash; plasma spray; TBC; thermal diffusivity; ZrO2 ID ZIRCONIA COATINGS; PHASE-STABILITY; HEAT-TREATMENT; CONDUCTIVITY; MICROSTRUCTURE; EVOLUTION; POROSITY; YSZ AB Thermal diffusivities of air plasma sprayed (APS) thermal barrier coatings (TBCs) were measured by the laser flash method. The data were used to calculate thermal conductivity of TBCs when provided with density and specific heat data. Due to the complicated microstructure and other processing-related parameters, thermal diffusivity of TBCs can vary as much as three- to four-fold. Data collected from over 200 free-standing ZrO2-7-8wt.%Y2O3 TBCs are presented. The large database gives a clear picture of the expected "band" of thermal diffusivity values. When this band is used as a reference for thermal diffusivity of a specific TBC, the thermal transport property of the TBC can be more precisely described. This database is intended to serve researchers and manufacturers of TBCs as a valuable resource for the evaluation of TBCs. C1 [Wang, Hsin; Dinwiddie, Ralph B.; Porter, Wallace D.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Wang, H (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM wangh2@ornl.gov RI Wang, Hsin/A-1942-2013 OI Wang, Hsin/0000-0003-2426-9867 FU Assistant Secretary for Energy Efficiency and Renewable Energy; Office of Vehicle Technologies; Department of Energy [DE-AC05000OR22725] FX The authors would like to thank all the HTML users in the past 12 years for allowing this database to be developed. Users contributed to the thermal diffusivity database include GE Aircraft Engine, GE CR&D, Northwestern University, Siemens Westinghouse, Solar Turbine, Purdue University, University of Central Florida, Pennsylvania State University, and State University of New York at Stony Brook. This work has been sponsored by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies, as part of the High Temperature Materials Laboratory User Program at Oak Ridge National Laboratory by the UT-Battelle LLC, for the Department of Energy under contract DE-AC05000OR22725. NR 26 TC 9 Z9 9 U1 1 U2 11 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1059-9630 J9 J THERM SPRAY TECHN JI J. Therm. Spray Technol. PD SEP PY 2010 VL 19 IS 5 BP 879 EP 883 DI 10.1007/s11666-010-9486-z PG 5 WC Materials Science, Coatings & Films SC Materials Science GA 642YC UT WOS:000281256800005 ER PT J AU Hamrick, MW Arounleut, P Kellum, E Cain, M Immel, D Liang, LF AF Hamrick, Mark W. Arounleut, Phonepasong Kellum, Ethan Cain, Matthew Immel, David Liang, Li-Fang TI Recombinant Myostatin (GDF-8) Propeptide Enhances the Repair and Regeneration of Both Muscle and Bone in a Model of Deep Penetrant Musculoskeletal Injury SO JOURNAL OF TRAUMA-INJURY INFECTION AND CRITICAL CARE LA English DT Article DE Orthopaedic trauma; Extremity injury; Muscle regeneration; Fracture healing ID MUSCULAR-DYSTROPHY; BETA SUPERFAMILY; STEM-CELLS; MICE; FOLLISTATIN; EXPRESSION; MASS; PERIOSTEAL; FIBROSIS; RECEPTOR AB Background: Myostatin (GDF-8) is known as a potent inhibitor of muscle growth and development, and myostatin is also expressed early in the fracture healing process. The purpose of this study was to test the hypothesis that a new myostatin inhibitor, a recombinant myostatin propeptide, can enhance the repair and regeneration of both muscle and bone in cases of deep penetrant injury. Methods: We used a fibula osteotomy model with associated damage to lateral compartment muscles (fibularis longus and brevis) in mice to test the hypothesis that blocking active myostatin with systemic injections of a recombinant myostatin propeptide would improve muscle and bone repair. Mice were assigned to two treatment groups after undergoing a fibula osteotomy: those receiving either vehicle (saline) or recombinant myostatin propeptide (20 mg/kg). Mice received one injection on the day of surgery, another injection 5 days after surgery, and a third injection 10 days after surgery. Mice were killed 15 days after the osteotomy procedure. Bone repair was assessed using microcomputed tomography (micro-CT) and histologic evaluation of the fracture callus. Muscle healing was assessed using Masson trichrome staining of the injury site, and image analysis was used to quantify the degree of fibrosis and muscle regeneration. Results: Three propeptide injections over a period of 15 days increased body mass by 7% and increased muscle mass by almost 20% (p < 0.001). Micro-CT analysis of the osteotomy site shows that by 15 days postosteotomy, bony callus tissue was observed bridging the osteotomy gap in 80% of the propeptide-treated mice but only 40% of the control (vehicle)treated mice (p < 0.01). Micro-CT quantification shows that bone volume of the fracture callus was increased by similar to 30% (p < 0.05) with propeptide treatment, and the increase in bone volume was accompanied by a significant increase in cartilage area (p = 0.01). Propeptide treatment significantly decreased the fraction of fibrous tissue in the wound site and increased the fraction of muscle relative to fibrous tissue by 20% (p < 0.01). Conclusions: Blocking myostatin signaling in the injured limb improves fracture healing and enhances muscle regeneration. These data suggest that myostatin inhibitors may be effective for improving wound repair in cases of orthopaedic trauma and extremity injury. C1 [Hamrick, Mark W.; Arounleut, Phonepasong; Kellum, Ethan; Cain, Matthew] Med Coll Georgia, Dept Cellular Biol & Anat, Inst Mol Med & Genet, Augusta, GA 30912 USA. [Hamrick, Mark W.; Arounleut, Phonepasong; Kellum, Ethan; Cain, Matthew] Med Coll Georgia, Inst Mol Med & Genet, Dept Orthopaed Surg, Augusta, GA 30912 USA. [Immel, David] Savannah River Natl Lab, Aiken, SC USA. [Liang, Li-Fang] Metamorphix Inc, Beltsville, MD USA. RP Hamrick, MW (reprint author), Med Coll Georgia, Dept Cellular Biol & Anat, Inst Mol Med & Genet, Laney Walker Blvd, Augusta, GA 30912 USA. EM mhamrick@mail.mcg.edu RI Hamrick, Mark/K-1131-2016 FU National Institutes of Health [AR049717]; Office of Naval Research [N000140810197] FX Supported by National Institutes of Health (AR049717) and the Office of Naval Research (N000140810197). NR 37 TC 31 Z9 34 U1 0 U2 3 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0022-5282 J9 J TRAUMA JI J. Trauma-Injury Infect. Crit. Care PD SEP PY 2010 VL 69 IS 3 BP 579 EP 583 DI 10.1097/TA.0b013e3181c451f4 PG 5 WC Critical Care Medicine; Surgery SC General & Internal Medicine; Surgery GA 649HX UT WOS:000281760800020 PM 20173658 ER PT J AU Baer, DR Engelhard, MH Lea, AS Nachimuthu, P Droubay, TC Kim, J Lee, B Mathews, C Opila, RL Saraf, LV Stickle, WF Wallace, RM Wright, BS AF Baer, D. R. Engelhard, M. H. Lea, A. S. Nachimuthu, P. Droubay, T. C. Kim, J. Lee, B. Mathews, C. Opila, R. L. Saraf, L. V. Stickle, W. F. Wallace, R. M. Wright, B. S. TI Comparison of the sputter rates of oxide films relative to the sputter rate of SiO2 SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article ID ACCURATE SEMIEMPIRICAL EQUATION; DEPTH PROFILE ANALYSIS; ULTRATHIN SIO2; THICKNESS MEASUREMENTS; SILICON DIOXIDE; THIN-FILMS; YIELDS; TIO2(001); OXYGEN; ARGON AB There is a growing interest in knowing the sputter rates for a wide variety of oxides because of their increasing technological importance in many different applications. To support the needs of users of the Environmental Molecular Sciences Laboratory, a national scientific user facility, as well as our research programs, the authors made a series of measurements of the sputter rates from oxide films that have been grown by oxygen plasma-assisted molecular beam epitaxy, pulsed laser deposition, atomic layer deposition, electrochemical oxidation, or sputter deposition. The sputter rates for these oxide films were determined in comparison with those from thermally grown SiO2, a common reference material for sputter rate determination. The film thicknesses and densities for most of these oxide films were measured using x-ray reflectivity. These oxide films were mounted in an x-ray photoelectron or Auger electron spectrometer for sputter rate measurements using argon ion sputtering. Although the primary objective of this work was to determine relative sputter rates at a fixed angle, the measurements also examined (i) the angle dependence of the relative sputter rates, (ii) the energy dependence of the relative sputter rates, and (iii) the extent of ion beam induced reduction for some oxides. Oxide films examined include SiO2, Al2O3, CeO2, Cr2O3, Fe2O3, HfO2, In Sn oxide, Ta2O5, TiO2 (anatase, rutile, and amorphous), and ZnO. The authors found that the sputter rates for the oxides can vary up to a factor of 2 (usually lower) from that observed for SiO2. The ratios of sputter rates relative to those of SiO2 appear to be relatively independent of ion beam energy in the range of 1-4 kV and for incident angles <50 degrees. As expected, the extent of ion beam induced reduction of the oxides varies with the sputter angle. 2010 American Vacuum Society. [DOI: 10.1116/1.3456123] C1 [Baer, D. R.; Engelhard, M. H.; Lea, A. S.; Nachimuthu, P.; Saraf, L. V.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. [Droubay, T. C.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. [Kim, J.; Lee, B.; Mathews, C.; Wallace, R. M.] Univ Texas Dallas, Dept Mat Sci, Richardson, TX 75080 USA. [Opila, R. L.; Wright, B. S.] Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA. [Stickle, W. F.] Hewlett Packard Corp, Corvallis, OR 97330 USA. RP Baer, DR (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Box 999, Richland, WA 99352 USA. EM don.baer@pnl.gov RI Wallace, Robert/A-5283-2008; Kim, Jiyoung/A-2388-2010; Engelhard, Mark/F-1317-2010; Lee, Bongki /A-4549-2010; Baer, Donald/J-6191-2013; Droubay, Tim/D-5395-2016; OI Wallace, Robert/0000-0001-5566-4806; Baer, Donald/0000-0003-0875-5961; Droubay, Tim/0000-0002-8821-0322; Lea, Alan/0000-0002-4232-1553; Engelhard, Mark/0000-0002-5543-0812 FU U.S. DOE Offices of Basic Energy Science and Biological and Environmental Research; SRC FX Much of this work was conducted in EMSL, a national scientific user facility operated by Pacific Northwest National Laboratory for the Office of Biological and Environmental Research, U.S. Department of Energy. The work was conducted to assist the work of many different EMSL users including those supported by the U.S. DOE Offices of Basic Energy Science and Biological and Environmental Research. Work at UT-Dallas was supported in part by the SRC. NR 35 TC 48 Z9 48 U1 3 U2 51 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD SEP-OCT PY 2010 VL 28 IS 5 BP 1060 EP 1072 DI 10.1116/1.3456123 PG 13 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 655EX UT WOS:000282230400003 ER PT J AU Tarditi, A Kondratyuk, P Wong, PK Gellman, AJ AF Tarditi, Ana Kondratyuk, Petro Wong, Pak Kin Gellman, Andrew J. TI Controlling the work function of a diamond-like carbon surface by fluorination with XeF2 SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article ID OVERCOATS; ALCOHOLS; FILMS; LUBRICANTS; ADSORPTION; HYDROGEN; ETHERS AB Thin diamond-like carbon films were subjected to fluorination with gaseous XeF2 under ultrahigh vacuum conditions in order to increase the work function of the diamond-like carbon surface. Changes in the work function and surface composition were monitored with UV photoemission spectroscopy and x-ray photoemission spectroscopy, respectively. Successive XeF2 exposures raised the work function by as much as 1.55 eV. Surprisingly, approximately half of the increase in the work function occurred while the coverage of fluorine remained below 0.02 monolayers (ML). This suggests that initial doses of XeF2 remove extrinsic adsorbates from the diamond-like carbon film and that fluorine desorbs with the reaction products. Increasing the exposure of the diamond-like carbon to XeF2 leads to the expected covalent fluorination of the surface, which saturates at fluorine coverages of 6 F atoms/nm(2) (similar to 0.3 ML). Annealing of the diamond-like carbon to temperatures above 850 K was required to reduce the surface fluorine concentration to undetectable levels. This did not, however, cause the work function to return to its original, prefluorination value. (C) 2010 American Vacuum Society [DOT: 10.1116/1.3480335] C1 [Tarditi, Ana; Kondratyuk, Petro; Gellman, Andrew J.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA. [Wong, Pak Kin] SAE Technol Ctr, Shatin, Hong Kong, Peoples R China. [Gellman, Andrew J.] Natl Energy Technol Lab, Inst Adv Energy Studies, Pittsburgh, PA 15236 USA. RP Gellman, AJ (reprint author), Carnegie Mellon Univ, Dept Chem Engn, 5000 Forbes Ave, Pittsburgh, PA 15213 USA. EM gellman@cmu.edu RI Gellman, Andrew/M-2487-2014 OI Gellman, Andrew/0000-0001-6618-7427 FU Data Storage Systems Center at Carnegie Mellon; SAE Magnetics FX This work was supported by the Data Storage Systems Center at Carnegie Mellon with funding from SAE Magnetics. NR 25 TC 3 Z9 3 U1 0 U2 6 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD SEP-OCT PY 2010 VL 28 IS 5 BP 1250 EP 1254 DI 10.1116/1.3480335 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 655EX UT WOS:000282230400032 ER PT J AU Voss, LF Shao, Q Reinhardt, CE Graff, RT Conway, AM Nikolic, RJ Deo, N Cheung, CL AF Voss, L. F. Shao, Q. Reinhardt, C. E. Graff, R. T. Conway, A. M. Nikolic, R. J. Deo, Nirmalendu Cheung, Chin Li TI Planarization of high aspect ratio p-i-n diode pillar arrays for blanket electrical contacts SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article DE electrical contacts; electron beam deposition; metallic thin films; photoresists; p-i-n diodes; planarisation; sputter deposition; sputter etching; sputtered coatings; vacuum deposited coatings; vacuum deposition ID NANOWIRE ARRAYS; (10)BORON; PLASMAS; FILMS AB Two planarization techniques for high aspect ratio three dimensional pillar structured p-i-n diodes have been developed in order to enable a continuous coating of metal on the top of the structures. The first technique allows for coating of structures with topography through the use of a planarizing photoresist followed by reactive ion etch-back to expose the tops of the pillar structure. The second technique also utilizes photoresist but instead allows for planarization of a structure in which the pillars are filled and coated with a conformal coating by matching the etch rate of the photoresist to the underlying layers. These techniques enable deposition using either sputtering or electron beam evaporation of metal films to allow for electrical contact to the tops of the underlying pillar structure. These processes have potential applications for many devices comprised of three dimensional high aspect ratio structures. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3478306] C1 [Voss, L. F.; Shao, Q.; Reinhardt, C. E.; Graff, R. T.; Conway, A. M.; Nikolic, R. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Deo, Nirmalendu; Cheung, Chin Li] Univ Nebraska, Dept Chem, Lincoln, NE 68588 USA. [Deo, Nirmalendu; Cheung, Chin Li] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA. RP Voss, LF (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA. EM lfvoss@gmail.com RI Cheung, Chin Li/B-8270-2013; Shao, Qinghui/A-1756-2013 FU U.S. Department of Energy [DE-AC52-07NA27344, LLNL-JRNL-422874] FX This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract Nos. DE-AC52-07NA27344 and LLNL-JRNL-422874. This work was supported by the Domestic Nuclear Detection Office in the Department of Homeland Security. NR 18 TC 6 Z9 6 U1 1 U2 8 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD SEP-OCT PY 2010 VL 28 IS 5 BP 916 EP 920 DI 10.1116/1.3478306 PG 5 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA 657TH UT WOS:000282434900010 ER PT J AU Dortch, RD Apker, GA Valentine, WM Lai, B Does, MD AF Dortch, Richard D. Apker, Greg A. Valentine, William M. Lai, Barry Does, Mark D. TI Compartment-Specific Enhancement of White Matter and Nerve Ex Vivo Using Chromium SO MAGNETIC RESONANCE IN MEDICINE LA English DT Article DE MRI; chromium; relaxometry; white matter; nerve ID PERIPHERAL-NERVE; IN-VIVO; MAGNETIZATION-TRANSFER; T-2 RELAXATION; OPTIC-NERVE; MOUSE-BRAIN; TRANSVERSE RELAXATION; INVERSION-RECOVERY; WATER DIFFUSION; MYELIN WATER AB Chromium-Cr(VI) in the form of potassium dichromate has been shown to specifically enhance white matter signal. The proposed mechanism for this enhancement is reduction of diamagnetic Cr(VI) to paramagnetic chromium species by oxidizable myelin lipids. The purpose of the study herein was to better understand the microanatomical basis of this enhancement (i.e., the relative enhancement of myelin, intra-axonal, and extra-axonal water). Toward this end, integrated T(1)-T(2) measurements were performed in potassium dichromate loaded (hereafter referred to as chromated) rat brains, rat optic nerve samples, and frog sciatic nerve samples ex vivo. In control optic nerve and white matter, two T(1)-T(2) components were resolved, representing myelin and nonmyelin water (intra- and extra-axonal water). Following chromation, three T(1)-T(2) components were resolved in these same tissues. Results from similar measurements in sciatic nerve all three components are resolvable in control and chromated samples and quantitative histologic analysis suggest that this additional T(1)-T(2) component is due to a splitting of the nonmyelin water component into intra- and extra-axonal water components. This compartment-specific enhancement may provide unique contrast for MR histology, as well as allow one to probe the compartmental basis of various contrast mechanisms in neural tissue. Magn Reson Med 64:688-697, 2010. (C) 2010 Wiley-Liss, Inc. C1 [Dortch, Richard D.; Does, Mark D.] Vanderbilt Univ, Inst Imaging Sci, Nashville, TN 37232 USA. [Dortch, Richard D.; Apker, Greg A.; Does, Mark D.] Vanderbilt Univ, Dept Biomed Engn, Nashville, TN 37232 USA. [Dortch, Richard D.; Does, Mark D.] Vanderbilt Univ, Dept Radiol & Radiol Sci, Nashville, TN 37232 USA. [Valentine, William M.] Vanderbilt Univ, Dept Pathol, Nashville, TN 37232 USA. [Lai, Barry] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. [Does, Mark D.] Vanderbilt Univ, Dept Elect Engn, Nashville, TN 37232 USA. RP Does, MD (reprint author), Vanderbilt Univ, Inst Imaging Sci, AA-1105 Med Ctr N,1161 21st Ave S, Nashville, TN 37232 USA. EM mark.does@vanderbilt.edu RI Does, Mark/G-8975-2011 FU NSF [0448915]; NIH [EB001744] FX The authors thank Dr. Holly Valentine for her useful consultation regarding lipid oxidation. M.D.D. was supported by an NSF CAREER award, 0448915.; Grant sponsor: NIH; Grant number: EB001744. NR 40 TC 10 Z9 10 U1 0 U2 6 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0740-3194 J9 MAGN RESON MED JI Magn. Reson. Med. PD SEP PY 2010 VL 64 IS 3 BP 688 EP 697 DI 10.1002/mrm.22460 PG 10 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 644BV UT WOS:000281346300009 PM 20806376 ER PT J AU Fischer, P AF Fischer, Peter TI Viewing spin structures with soft X-ray microscopy SO MATERIALS TODAY LA English DT Review ID MAGNETIC CIRCULAR-DICHROISM; ROOM-TEMPERATURE; VORTEX CORES; SPINTRONICS; DOMAINS; POLARIZATION; BEHAVIOR; RESOLUTION; SPECTRA; MEMORY AB The spin of the electron and it's associated magnetic moment marks the basic unit for magnetic properties of matter(1,2). Magnetism, in particular ferromagnetism and antiferromagnetism is described by a collective order of these spins, where the interaction between individual spins reflects a competition between exchange, anisotropy and dipolar energy terms. As a result the energetically favored ground state of a ferromagnetic system is a rather complex spin configuration, the magnetic domain structure(3). Magnetism is one of the eldest scientific phenomena, yet it is one of the most powerful and versatile utilized physical effects in modern technologies, such as in magnetic storage and sensor devices. To achieve highest storage density, the relevant length scales, such as the bit size in disk drives is now approaching the nanoscale and as such further developments have to deal with nanoscience phenomena(4-9). Advanced characterization tools are required to fully understand the underlying physical principles. Magnetic microscopes using polarized soft X-rays offer a close-up view into magnetism with unique features, these include elemental sensitivity due to X-ray magnetic dichroism effects as contrast mechanism, high spatial resolution provided by state-of-the-art X-ray optics and fast time resolution limited by the inherent time structure of current X-ray sources, which will be overcome with the introduction of ultrafast and high brilliant X-ray sources. C1 EO Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. RP Fischer, P (reprint author), EO Lawrence Berkeley Natl Lab, Ctr Xray Opt, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM PJFischer@lbl.gov RI MSD, Nanomag/F-6438-2012; Fischer, Peter/A-3020-2010 OI Fischer, Peter/0000-0002-9824-9343 FU Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy FX We would like to acknowledge the numerous fruitful and stimulating collaborations, in particular with M.-Y. Im, W. Chao, E. Anderson (CXRO), S.-C. Shin (KAIST Korea), K.-S. Lee, S.-K. Kim (Seoul Natl University), D.-H. Kim (Chungbuk University), G. Meier, L. Bocklage, M. Bolte (U Hamburg), S. Kasai (NIMS Tsukuba), A. Thiaville (U Paris-Sud), M. Bryan, P. Fry, D. Allwood (U Sheffield), S. Mangin (U Nancy). The continuous support of the staff of CXRO and ALS is highly appreciated. This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy. NR 102 TC 11 Z9 11 U1 1 U2 16 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1369-7021 J9 MATER TODAY JI Mater. Today PD SEP PY 2010 VL 13 IS 9 BP 14 EP 22 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA 651HO UT WOS:000281918800016 ER PT J AU Maki, KL Braun, RJ Henshaw, WD King-Smith, PE AF Maki, Kara L. Braun, Richard J. Henshaw, William D. King-Smith, P. Ewen TI Tear film dynamics on an eye-shaped domain I: pressure boundary conditions SO MATHEMATICAL MEDICINE AND BIOLOGY-A JOURNAL OF THE IMA LA English DT Article DE lubrication theory; overset grid; tear film; thin film ID PARTIAL-DIFFERENTIAL-EQUATIONS; DRY EYE; SURFACE-TENSION; LIQUID-FILM; LIPID LAYER; BLINK CYCLE; PRECORNEAL; THICKNESS; SCHEMES; MODELS AB We study the relaxation of a model for the human tear film after a blink on a stationary eye-shaped domain corresponding to a fully open eye using lubrication theory and explore the effects of viscosity, surface tension, gravity and boundary conditions that specify the pressure. The governing non-linear partial differential equation is solved on an overset grid by a method of lines using a finite-difference discretization in space and an adaptive second-order backward-difference formula solver in time. Our 2D simulations are calculated in the Overture computational framework. The computed flows show sensitivity to both our choices between two different pressure boundary conditions and the presence of gravity; this is particularly true around the boundary. The simulations recover features seen in ID simulations and capture some experimental observations including hydraulic connectivity around the lid margins. C1 [Maki, Kara L.; Braun, Richard J.] Univ Delaware, Dept Math Sci, Newark, DE 19711 USA. [Henshaw, William D.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [King-Smith, P. Ewen] Ohio State Univ, Coll Optometry, Columbus, OH 43218 USA. RP Maki, KL (reprint author), Univ Delaware, Dept Math Sci, Newark, DE 19711 USA. EM braun@math.ndci.edu FU National Science Foundation [0616483] FX The National Science Foundation (0616483). NR 54 TC 18 Z9 18 U1 1 U2 7 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 1477-8599 J9 MATH MED BIOL JI Math. Med. Biol. PD SEP PY 2010 VL 27 IS 3 BP 227 EP 254 DI 10.1093/imammb/dqp023 PG 28 WC Biology; Mathematical & Computational Biology SC Life Sciences & Biomedicine - Other Topics; Mathematical & Computational Biology GA 659AH UT WOS:000282538900003 PM 20064825 ER PT J AU Anitescu, M Park, S AF Anitescu, Mihai Park, Sanghyun TI A linear assignment approach for the least-squares protein morphing problem SO MATHEMATICAL PROGRAMMING LA English DT Article DE Linear assignment; Protein conformations; Free-energy calculation ID STRUCTURE PREDICTION; MOLECULAR-DYNAMICS AB This work addresses the computation of free-energy differences between protein conformations by using morphing (i.e., transformation) of a source conformation into a target conformation. To enhance the morphing procedure, we employ permutations of atoms: we seek to find the permutation sigma that minimizes the mean-square distance traveled by the atoms. Instead of performing this combinatorial search in the space of permutations, we show that the best permutation can be found by solving a linear assignment problem. We demonstrate that the use of such optimal permutations significantly improves the efficiency of the free-energy computation. C1 [Anitescu, Mihai; Park, Sanghyun] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Anitescu, M (reprint author), Argonne Natl Lab, Div Math & Comp Sci, Bldg 221,9700 S Cass Ave, Argonne, IL 60439 USA. EM anitescu@mcs.anl.gov FU Department of Energy [DE-AC02-06CH11357] FX Sanghyun Park thanks Peter Freddolino for many insights and discussions. The authors thank the associate editor for their comments that have improved the paper. This work was supported by the Department of Energy through contract DE-AC02-06CH11357. NR 16 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0025-5610 J9 MATH PROGRAM JI Math. Program. PD SEP PY 2010 VL 125 IS 1 BP 195 EP 203 DI 10.1007/s10107-009-0269-6 PG 9 WC Computer Science, Software Engineering; Operations Research & Management Science; Mathematics, Applied SC Computer Science; Operations Research & Management Science; Mathematics GA 649IE UT WOS:000281761500009 ER PT J AU Zhou, JZ Deng, Y Luo, F He, ZL Tu, QC Zhi, XY AF Zhou, Jizhong Deng, Ye Luo, Feng He, Zhili Tu, Qichao Zhi, Xiaoyang TI Functional Molecular Ecological Networks SO MBIO LA English DT Article ID ANIMAL MUTUALISTIC NETWORKS; FOOD-WEB STRUCTURE; BIOLOGICAL NETWORKS; COMMUNITY STRUCTURE; MICROBIAL COMMUNITIES; COMPLEX NETWORKS; ANALYSIS REVEALS; ELEVATED CO2; MODULARITY; DIVERSITY AB Biodiversity and its responses to environmental changes are central issues in ecology and for society. Almost all microbial biodiversity research focuses on "species" richness and abundance but not on their interactions. Although a network approach is powerful in describing ecological interactions among species, defining the network structure in a microbial community is a great challenge. Also, although the stimulating effects of elevated CO2 (eCO(2)) on plant growth and primary productivity are well established, its influences on belowground microbial communities, especially microbial interactions, are poorly understood. Here, a random matrix theory (RMT)-based conceptual framework for identifying functional molecular ecological networks was developed with the high-throughput functional gene array hybridization data of soil microbial communities in a long-term grassland FACE (free air, CO2 enrichment) experiment. Our results indicate that RMT is powerful in identifying functional molecular ecological networks in microbial communities. Both functional molecular ecological networks under eCO(2) and ambient CO2 (aCO(2)) possessed the general characteristics of complex systems such as scale free, small world, modular, and hierarchical. However, the topological structures of the functional molecular ecological networks are distinctly different between eCO(2) and aCO(2), at the levels of the entire communities, individual functional gene categories/groups, and functional genes/sequences, suggesting that eCO(2) dramatically altered the network interactions among different microbial functional genes/populations. Such a shift in network structure is also significantly correlated with soil geochemical variables. In short, elucidating network interactions in microbial communities and their responses to environmental changes is fundamentally important for research in microbial ecology, systems microbiology, and global change. IMPORTANCE Microorganisms are the foundation of the Earth's biosphere and play integral and unique roles in various ecosystem processes and functions. In an ecosystem, various microorganisms interact with each other to form complicated networks. Elucidating network interactions and their responses to environmental changes is difficult due to the lack of appropriate experimental data and an appropriate theoretical framework. This study provides a conceptual framework to construct interaction networks in microbial communities based on high-throughput functional gene array hybridization data. It also first documents that elevated carbon dioxide in the atmosphere dramatically alters the network interactions in soil microbial communities, which could have important implications in assessing the responses of ecosystems to climate change. The conceptual framework developed allows microbiologists to address research questions unapproachable previously by focusing on network interactions beyond the listing of, e.g., the number and abundance of species. Thus, this study could represent transformative research and a paradigm shift in microbial ecology. C1 [Zhou, Jizhong; Deng, Ye; He, Zhili; Tu, Qichao; Zhi, Xiaoyang] Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA. [Zhou, Jizhong; Deng, Ye; He, Zhili; Tu, Qichao; Zhi, Xiaoyang] Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA. [Zhou, Jizhong] Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA USA. [Zhou, Jizhong] Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China. [Luo, Feng] Clemson Univ, Sch Comp, Clemson, SC USA. [Deng, Ye] Glomics Inc, Norman, OK USA. RP Zhou, JZ (reprint author), Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA. EM jzhou@ou.edu RI Deng, Ye/A-2571-2013; He, Zhili/C-2879-2012; OI ?, ?/0000-0002-7584-0632 FU US Department of Energy, Office of Science, Office of Biological and Environmental Research [DE-SC0004601, DE-AC02-05CH11231]; GTL Foundational; United States Department of Agriculture through the NSF-USDA [2007-35319-18305]; Oklahoma Bioenergy Center (OBC) FX This work has been partially supported through contract DE-SC0004601 and contract DE-AC02-05CH11231 (as part of ENIGMA, a Scientific Focus Area) by the US Department of Energy, Office of Science, Office of Biological and Environmental Research, Genomics: GTL Foundational Science, the United States Department of Agriculture (project 2007-35319-18305) through the NSF-USDA Microbial Observatories Program, and the Oklahoma Bioenergy Center (OBC). NR 58 TC 23 Z9 30 U1 3 U2 3 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 2150-7511 J9 MBIO JI mBio PD SEP-OCT PY 2010 VL 1 IS 4 AR e00169-10 DI 10.1128/mBio.00169-10 PG 10 WC Microbiology SC Microbiology GA 686TG UT WOS:000284718000013 ER PT J AU Zeng, GSL Gullberg, GT AF Zeng, Gengsheng L. Gullberg, Grant T. TI SPECT region of interest reconstruction with truncated transmission and emission data SO MEDICAL PHYSICS LA English DT Article DE SPECT; truncation; iterative reconstruction ID INTERIOR PROBLEM; TRANSFORM AB Purpose: The aim of this article is to propose an exact SPECT region of interest (ROI) reconstruction method using truncated transmission and truncated emission data. Methods: Recently, the authors published two articles in Physics in Medicine and Biology with two results in SPECT ROI emission image reconstruction. The first result states that if the transmission data are truncated but the emission data are not truncated, the emission image can be exactly reconstructed, provided the entire emission image is inside the region where the transmission data are not truncated. The second result states that if the transmission data are not truncated, the emission ROI can be exactly reconstructed with truncated emission data. This article combines these two results and obtains a new result that the emission ROI can be exactly reconstructed if both transmission and emission data are truncated. Results: Computer simulations are performed to verify the proposed ROI image reconstruction algorithm. Conclusions: Exact SPECT ROI image reconstruction is possible using truncated transmission and emission projections with some prior information about the attenuator and the emission distribution. (c) 2010 American Association of Physicists in Medicine. [DOI: 10.1118/1.3471376] C1 [Zeng, Gengsheng L.] Univ Utah, Dept Radiol, Utah Ctr Adv Imaging, Salt Lake City, UT 84108 USA. [Gullberg, Grant T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Radiotracer Dev & Imaging Technol, Berkeley, CA 94720 USA. RP Zeng, GSL (reprint author), Univ Utah, Dept Radiol, Utah Ctr Adv Imaging, Salt Lake City, UT 84108 USA. EM larry@ucair.med.utah.edu; gtgullberg@lbl.gov FU Margolis Foundation; NIH [R01EB00121]; Office of Science, Office of Biological and Environmental Research, Medical Science Division of the U.S. Department of Energy [DE-AC02-05CH11231] FX This work was supported in part by the Margolis Foundation, NIH Grant No. R01EB00121, and by the Director, Office of Science, Office of Biological and Environmental Research, Medical Science Division of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. NR 9 TC 7 Z9 7 U1 0 U2 0 PU AMER ASSOC PHYSICISTS MEDICINE AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0094-2405 J9 MED PHYS JI Med. Phys. PD SEP PY 2010 VL 37 IS 9 BP 4627 EP 4633 DI 10.1118/1.3471376 PG 7 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 651DY UT WOS:000281906000013 PM 20964181 ER PT J AU Alonso, AP Dale, VL Shachar-Hill, Y AF Alonso, Ana Paula Dale, Val L. Shachar-Hill, Yair TI Understanding fatty acid synthesis in developing maize embryos using metabolic flux analysis SO METABOLIC ENGINEERING LA English DT Article DE Zea mays; Metabolic flux analysis; Carbon conversion efficiency; Maize embryo; Fatty acid synthesis; NADP-dependent malic enzyme ID BIDIRECTIONAL REACTION STEPS; NADP-MALIC ENZYME; NUCLEAR-MAGNETIC-RESONANCE; PEA ROOT PLASTIDS; CENTRAL CARBOHYDRATE-METABOLISM; BRASSICA-NAPUS EMBRYOS; ANNUUS L. EMBRYOS; LABELING EXPERIMENTS; LIPID-ACCUMULATION; GLYCEROLIPID BIOSYNTHESIS AB The efficiency with which developing maize embryos convert substrates into seed storage reserves was determined to be 5771%, by incubating developing maize embryos with uniformly labeled C-14 substrates and measuring their conversion to CO2 and biomass products. To map the pattern of metabolic fluxes underlying this efficiency, maize embryos were labeled to isotopic steady state using a combination of labeled C-13-substrates. Intermediary metabolic fluxes were estimated by computer-aided modeling of the central metabolic network using the labeling data collected by NMR and GC-MS and the biomass composition. The resultant flux map reveals that even though 36% of the entering carbon goes through the oxidative pentose-phosphate pathway, this does not fully meet the NADPH demands for fatty acid synthesis. Metabolic flux analysis and enzyme activities highlight the importance of plastidic NADP-dependent malic enzyme, which provides one-third of the carbon and NADPH required for fatty acid synthesis in developing maize embryos. Published by Elsevier Inc. C1 [Alonso, Ana Paula; Shachar-Hill, Yair] Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA. [Alonso, Ana Paula; Shachar-Hill, Yair] Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA. RP Alonso, AP (reprint author), Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA. EM alonsoa@msu.edu RI Shachar-Hill, Yair/B-6165-2013 OI Shachar-Hill, Yair/0000-0001-8793-5084 NR 63 TC 66 Z9 66 U1 2 U2 47 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1096-7176 EI 1096-7184 J9 METAB ENG JI Metab. Eng. PD SEP PY 2010 VL 12 IS 5 BP 488 EP 497 DI 10.1016/j.ymben.2010.04.002 PG 10 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 640TI UT WOS:000281074900009 PM 20406696 ER PT J AU Alam, TM Alam, MK Neerathilingam, M Volk, DE Sarkar, S Ansari, GAS Luxon, BA AF Alam, Todd M. Alam, M. Kathleen Neerathilingam, Muniasamy Volk, David E. Sarkar, S. Ansari, G. A. Shakeel Luxon, Bruce A. TI H-1 NMR metabonomic study of rat response to tri-phenyl phosphate and tri-butyl phosphate exposure SO METABOLOMICS LA English DT Article DE Nuclear magnetic resonance (NMR); Metabonomics; Metabolomics; Organophosphate toxicology; Discriminate analysis; Urine metabolites; Chemometrics ID NORMAL-BUTYL PHOSPHATE; SPRAGUE-DAWLEY RATS; INFORMATION RECOVERY; TRIPHENYL PHOSPHATE; TOXICITY; METABOLOMICS; NMR; NORMALIZATION; METABOLISM; CHEMISTRY AB The industrial application of organophosphates provides the opportunity for environmental exposure. While the toxicity of organophosphate compounds has been the target of significant work, studies directed towards the identification of metabolite markers to assess phosphate exposure are more limited. In this study the urine metabolite profiles for rats following single dose exposure to either tributyl phosphate (TBP, 15 mg/kg body weight) or triphenyl phosphate (TPP, 2 and 20 mg/kg body weight) were characterized using proton nuclear magnetic resonance (H-1 NMR) and orthogonal-partial least squares discriminate analysis (O-PLSDA). Using the developed O-PLSDA models it was possible to clearly identify TBP or TPP exposed animals. The performance of these models was validated using cross validation and permutation testing. Utilizing the variable importance in projection (VIP) coefficients from the O-PLSDA the metabolites that were most responsible for the classification of TBP or TPP exposure were determined. This initial study demonstrates the potential for NMR metabonomic studies for the identification and separation of environmental exposure to organophosphates. C1 [Alam, Todd M.] Sandia Natl Labs, Dept Elect & Nanostruct Mat, Albuquerque, NM 87185 USA. [Alam, M. Kathleen] Sandia Natl Labs, Energet Characterizat Dept, Albuquerque, NM 87185 USA. [Neerathilingam, Muniasamy; Volk, David E.; Sarkar, S.; Ansari, G. A. Shakeel; Luxon, Bruce A.] Univ Texas Med Branch, Sealy Ctr Struct Biol & Mol Biophys, Dept Chem & Mol Biol, Galveston, TX 77555 USA. RP Alam, TM (reprint author), Sandia Natl Labs, Dept Elect & Nanostruct Mat, POB 5800, Albuquerque, NM 87185 USA. EM tmalam@sandia.gov RI Luxon, Bruce/C-9140-2012; OI Volk, David/0000-0002-4372-6915 FU Sandia Corporation; Lockheed Martin Company; United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]; Sandia Laboratory Directed Research Development (LDRD) program 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. This work was funded entirely by the Sandia Laboratory Directed Research Development (LDRD) program. NR 37 TC 11 Z9 11 U1 1 U2 19 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1573-3882 J9 METABOLOMICS JI Metabolomics PD SEP PY 2010 VL 6 IS 3 BP 386 EP 394 DI 10.1007/s11306-010-0205-z PG 9 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA 622XC UT WOS:000279698500006 ER PT J AU Gibbs, JW Kaufman, MJ Hackenberg, RE Mendez, PF AF Gibbs, John W. Kaufman, Michael J. Hackenberg, Robert E. Mendez, Patricio F. TI Cooling Curve Analysis to Determine Phase Fractions in Solid-State Precipitation Reactions SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID THERMAL-ANALYSIS; ALLOYS AB This work presents a new method of cooling curve analysis to make in situ measurements of the amount of precipitate formed in solid-state phase transformations. The presented technique is based on a first-principles analysis of thermodynamics and heat flow to develop equations that relate cooling curve data to the amount transformed. The precipitation of Ag2Al in a binary Al-Ag alloy was examined both as a practical example of this technique and to obtain metallographic measurements of the amount of precipitation for comparison purposes. C1 [Gibbs, John W.; Hackenberg, Robert E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Kaufman, Michael J.] Colorado Sch Mines, Golden, CO 80401 USA. [Mendez, Patricio F.] Univ Alberta, Edmonton, AB T6G 2R3, Canada. RP Gibbs, JW (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM pmendez@ualberta.ca RI Kaufman, Michael/A-7737-2012; OI , /0000-0001-6730-1690; Hackenberg, Robert/0000-0002-0380-5723; Gibbs, John/0000-0002-0231-1318 FU National Science Foundation [DMI-0547649]; U.S. Department of Energy [DE-AC52-06NA25396] FX The authors would like to thank the National Science Foundation for funding through CAREER Award DMI-0547649. JWG and REH acknowledge support from the U.S. Department of Energy (contract DE-AC52-06NA25396) during manuscript preparation. The authors also would like to thank Professor Andre Costa e Silva for his help with thermophysical properties. NR 14 TC 12 Z9 12 U1 2 U2 6 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 SEP PY 2010 VL 41A IS 9 BP 2216 EP 2223 DI 10.1007/s11661-010-0318-z PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 643UB UT WOS:000281323700007 ER PT J AU Lee, SJ Clarke, KD Van Tyne, CJ AF Lee, Seok-Jae Clarke, Kester D. Van Tyne, Chester J. TI An On-Heating Dilation Conversional Model for Austenite Formation in Hypoeutectoid Steels SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID FE-C AUSTENITE; QUANTITATIVE DILATOMETRIC ANALYSIS; ISOTHERMAL DECOMPOSITION; PHASE-TRANSFORMATIONS; KINETICS; TEMPERATURE; MARTENSITE; BEHAVIOR; DILATATION; FRACTION AB Dilatometry is often used to study solid-state phase transformations. While most steel transformation studies focus on the decomposition of austenite, this article presents an on-heating dilation conversional model to determine phase fraction based on measured volume changes during the formation of austenite in ferrite-pearlite hypoeutectoid steels. The effect of alloying elements on the transformation strain is incorporated into the model. Comparison of the conversional model predictions to measured transformation temperature (A(c3)) shows excellent agreement. The pearlite decomposition finish temperature (A(pf)) predicted by the conversional model more closely matches experimental results when compared to standard lever rule calculations. Results show that including the effects of substitutional alloying elements (in addition to carbon) improves phase fraction predictions. The conversional model can be used to quantitatively predict intercritical austenite fraction with application to modeling, induction heating, intercritical annealing, and more complex heat treatments for hypoeutectoid steels. C1 [Lee, Seok-Jae; Van Tyne, Chester J.] Colorado Sch Mines, Dept Met & Mat Engn, Adv Steel Proc & Prod Res Ctr, Golden, CO 80401 USA. [Clarke, Kester D.] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. RP Lee, SJ (reprint author), Colorado Sch Mines, Dept Met & Mat Engn, Adv Steel Proc & Prod Res Ctr, Golden, CO 80401 USA. EM cvantyne@mines.edu RI Lee, Seok-Jae/C-8874-2011; Van Tyne, Chester/H-7159-2013 OI Lee, Seok-Jae/0000-0003-2463-8706; Van Tyne, Chester/0000-0002-7790-7685 FU Advanced Steel Processing and Products Research Center, Colorado School of Mines; United States Department of Energy [DE-AC52-06NA25396] FX The support of the Advanced Steel Processing and Products Research Center, Colorado School of Mines, is gratefully acknowledged. We offer sincere thanks to E. Buddy Damm and the Timken Company for supplying experimental materials and performing initial condition heat treatments. We also thank C.J. Vigil and R. E. Hackenberg, Los Alamos National Laboratory, for use of their dilatometer, and acknowledge Ingo Kurth, Avanel Industries, Inc., for assistance in the optimization of induction thermal cycles for this study. One of the authors (KDC) gratefully acknowledges support from Los Alamos National Security, LLC, operator of the Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396 with the United States Department of Energy. NR 26 TC 12 Z9 12 U1 2 U2 8 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD SEP PY 2010 VL 41A IS 9 BP 2224 EP 2235 DI 10.1007/s11661-010-0267-6 PG 12 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 643UB UT WOS:000281323700008 ER PT J AU Valdes, J King, P Liu, XB AF Valdes, Jairo King, Paul Liu, Xingbo TI On the Formulation of a Freckling Criterion for Ni-Based Superalloy Vacuum Arc Remelting Ingots SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID PB-SN ALLOYS; RAYLEIGH-NUMBER; DIRECTIONAL SOLIDIFICATION; COMPOSITIONAL CONVECTION; INTERDENDRITIC LIQUID; BINARY ALLOY; MUSHY LAYER; FLOW; MACROSEGREGATION; PERMEABILITY AB A criterion for freckling prediction that includes the effect of a tilted solidification front was proposed and evaluated with experimental data available in the literature. The criterion is based on the maximum local Rayleigh number in the mush layer and was developed using Flemings' criterion and assuming that the interdendritic liquid flow is governed by the Darcy law. The proposed form preserves the anisotropic nature of the permeability tensor throughout the derivation and provides improved resolution on freckle prediction. A clear separation between the freckled and nonfreckled experiments was obtained for all compositions. The effect of the tilted solidification front over the freckling potential was corroborated, and the results suggested that the directionality of permeability affects the location within the mush layer of the potential nucleation sites for the channels leading to freckles. A threshold zone was determined from the enclosing experiments data, and the range contained one of the proposed critical values for superalloys, which previously was developed by a completely different method. C1 [Valdes, Jairo; Liu, Xingbo] W Virginia Univ, Dept Mech & Aerosp Engn, Morgantown, WV 26506 USA. [Valdes, Jairo] Univ Valle, Escuela Ingn Mecan, Cali 25360, Colombia. [King, Paul] Natl Energy Technol Lab, Albany, OR 97321 USA. RP Valdes, J (reprint author), W Virginia Univ, Dept Mech & Aerosp Engn, Morgantown, WV 26506 USA. EM xingbo.liu@mail.wvu.edu FU Fulbright/Colciencias y el Departamento Nacional de Planeacion; Universidad del Valle FX Jairo Valdes acknowledges the financial support received by the Fulbright/Colciencias y el Departamento Nacional de Planeacion scholarship as well as the support from the Universidad del Valle. NR 45 TC 13 Z9 13 U1 3 U2 6 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD SEP PY 2010 VL 41A IS 9 BP 2408 EP 2416 DI 10.1007/s11661-010-0331-2 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 643UB UT WOS:000281323700026 ER PT J AU Price, MC Kearsley, AT Burchell, MJ Horz, F Borg, J Bridges, JC Cole, MJ Floss, C Graham, G Green, SF Hoppe, P Leroux, H Marhas, KK Park, N Stroud, R Stadermann, FJ Telisch, N Wozniakiewicz, PJ AF Price, M. C. Kearsley, A. T. Burchell, M. J. Hoerz, F. Borg, J. Bridges, J. C. Cole, M. J. Floss, C. Graham, G. Green, S. F. Hoppe, P. Leroux, H. Marhas, K. K. Park, N. Stroud, R. Stadermann, F. J. Telisch, N. Wozniakiewicz, P. J. TI Comet 81P/Wild 2: The size distribution of finer (sub-10 mu m) dust collected by the Stardust spacecraft SO METEORITICS & PLANETARY SCIENCE LA English DT Article ID TRANSMISSION ELECTRON-MICROSCOPY; ALUMINUM FOILS; HYPERVELOCITY IMPACT; MECHANICAL-BEHAVIOR; LABORATORY IMPACTS; PARTICLE-SIZE; STRAIN-RATE; CRATERS; RESIDUES; SIMULATION AB The fluence of dust particles < 10 mu m in diameter was recorded by impacts on aluminum foil of the NASA Stardust spacecraft during a close flyby of comet 81P/Wild 2 in 2004. Initial interpretation of craters for impactor particle dimensions and mass was based upon laboratory experimental simulations using projectiles less than > 10 mu m in diameter and the resulting linear relationship of projectile to crater diameter was extrapolated to smaller sizes. We now describe a new experimental calibration program firing very small monodisperse silica projectiles (470 nm-10 mu m) at approximately 6 km s-1. The results show an unexpected departure from linear relationship between 1 and 10 mu m. We collated crater measurement data and, where applicable, impactor residue data for 596 craters gathered during the postmission preliminary examination phase. Using the new calibration, we recalculate the size of the particle responsible for each crater and hence reinterpret the cometary dust size distribution. We find a greater flux of small particles than previously reported. From crater morphology and residue composition of a subset of craters, the internal structure and dimensions of the fine dust particles are inferred and a "maximum-size" distribution for the subgrains composing aggregate particles is obtained. The size distribution of the small particles derived directly from the measured craters peaks at approximately 175 nm, but if this is corrected to allow for aggregate grains, the peak in subgrain sizes is at < 100 nm. C1 [Price, M. C.; Burchell, M. J.; Cole, M. J.] Univ Kent, Sch Phys Sci, Canterbury CT2 7NH, Kent, England. [Kearsley, A. T.; Graham, G.] Nat Hist Museum, Dept Mineral, IARC, London SW7 5BD, England. [Hoerz, F.] NASA, Johnson Space Ctr, LZ Technol ESCG, Houston, TX 77058 USA. [Borg, J.] Inst Astrophys Spatiale, F-91405 Orsay, France. [Bridges, J. C.] Univ Leicester, Dept Phys & Astron, Space Res Ctr, Leicester LE1 7RH, Leics, England. [Floss, C.; Marhas, K. K.; Stadermann, F. J.] Washington Univ, Dept Phys, Space Sci Lab, St Louis, MO 63130 USA. [Green, S. F.] Open Univ, PSSRI, Milton Keynes MK7 6AA, Bucks, England. [Hoppe, P.] Max Planck Inst Chem, D-55020 Mainz, Germany. [Leroux, H.] Univ Lille 1, Unite Mat & Transformat, F-59655 Villeneuve Dascq, France. [Park, N.] AWE, Reading RG7 4PR, Berks, England. [Stroud, R.] USN, Res Lab, Washington, DC 20375 USA. [Telisch, N.; Wozniakiewicz, P. J.] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. RP Price, MC (reprint author), Univ Kent, Sch Phys Sci, Canterbury CT2 7NH, Kent, England. EM mcp2@star.kent.ac.uk RI Green, Simon/C-7408-2009; Hoppe, Peter/B-3032-2015; Stroud, Rhonda/C-5503-2008 OI Hoppe, Peter/0000-0003-3681-050X; Stroud, Rhonda/0000-0001-5242-8015 FU STFC (UK); CNES (Centre National des Etudes Spatiales); DoE [DE-AC52-07NA27344] FX The work at the University of Kent was funded by a grant from the STFC (UK). H. L. and J. B. thank the CNES (Centre National des Etudes Spatiales) for their support. Contributions from N. T. and P. J. W. were performed under the auspices of the USA. DoE by LLNL under contract DE-AC52-07NA27344. NR 37 TC 42 Z9 42 U1 0 U2 6 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD SEP PY 2010 VL 45 IS 9 BP 1409 EP 1428 DI 10.1111/j.1945-5100.2010.01104.x PG 20 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 694NA UT WOS:000285303700001 ER PT J AU Yabuta, H Alexander, CMO Fogel, ML Kilcoyne, ALD Cody, GD AF Yabuta, Hikaru Alexander, Conel M. O'D. Fogel, Marilyn L. Kilcoyne, A. L. David Cody, George D. TI A molecular and isotopic study of the macromolecular organic matter of the ungrouped C2 WIS 91600 and its relationship to Tagish Lake and PCA 91008 SO METEORITICS & PLANETARY SCIENCE LA English DT Article ID CARBONACEOUS CHONDRITES; MURCHISON METEORITE; CM CHONDRITES; GRAPHITE; ABSORPTION; MINERALOGY; PYROLYSIS; EXCITONS; ORIGIN AB Insight into the chemical history of an ungrouped type 2 carbonaceous chondrite meteorite, Wisconsin Range (WIS) 91600, is gained through molecular analyses of insoluble organic matter (IOM) using solid-state 13C nuclear magnetic resonance (NMR) spectroscopy, X-ray absorption near edge structure spectroscopy (XANES), and pyrolysis-gas chromatography coupled with mass spectrometry (pyr-GC/MS), and our previous bulk elemental and isotopic data. The IOM from WIS 91600 exhibits similarities in its abundance and bulk delta 15N value with IOM from another ungrouped carbonaceous chondrite Tagish Lake, while it exhibits H/C, delta 13C, and delta D values that are more similar to IOM from the heated CM, Pecora Escarpment (PCA) 91008. The 13C NMR spectra of IOM of WIS 91600 and Tagish Lake are similar, except for a greater abundance of CH(x)O species in the latter and sharper carbonyl absorption in the former. Unusual cross-polarization (CP) dynamics is observed for WIS 91600 that indicate the presence of two physically distinct organic domains, in which the degrees of aromatic condensation are distinctly different. The presence of two different organic domains in WIS 91600 is consistent with its brecciated nature. The formation of more condensed aromatics is the likely result of short duration thermal excursions during impacts. The fact that both WIS 91600 and PCA 91008 were subjected to short duration heating that is distinct from the thermal history of type 3 chondrites is confirmed by Carbon-XANES. Finally, after being briefly heated (400 degrees C for 10 s), the pyrolysis behavior of Tagish Lake IOM is similar to that of WIS 91600 and PCA 91008. We conclude that WIS 91600 experienced very moderate, short duration heating at low temperatures (< 500 degrees C) after an episode of aqueous alteration under conditions that were similar to those experienced by Tagish Lake. C1 [Yabuta, Hikaru; Fogel, Marilyn L.; Cody, George D.] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA. [Alexander, Conel M. O'D.] Carnegie Inst Washington, Dept Terr Magnetism, Washington, DC 20015 USA. [Kilcoyne, A. L. David] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Yabuta, H (reprint author), Osaka Univ, Dept Earth & Space Sci, Osaka 5600043, Japan. EM hyabuta@ess.sci.osaka-u.ac.jp RI Alexander, Conel/N-7533-2013; Yabuta, Hikaru/M-9041-2014; Fogel, Marilyn/M-2395-2015; Kilcoyne, David/I-1465-2013 OI Alexander, Conel/0000-0002-8558-1427; Yabuta, Hikaru/0000-0002-4625-5362; Fogel, Marilyn/0000-0002-1176-3818; FU Office of Science, Department of Energy [DE-AC02-05CH11231]; NASA; NASA Astrobiology Institute; JSPS FX We are very grateful for the samples provided to us by the meteorite working group, Cecilia Satterwhite (JSC), and Hideyasu Kojima (NIPR). We also thank Eric Quirico and Yongsong Huang for their helpful reviews that significantly improved this manuscript. Solid-state NMR spectra were acquired on the W. M. Keck Solid State NMR Facility at the Geophysical Laboratory. Beamline 5.3.2. at the Advanced Light Source is supported by the Director of the Office of Science, Department of Energy, under Contract No. DE-AC02-05CH11231. Support for this work was provided by the NASA Origins of the Solar System grant (GDC) and through the NASA Astrobiology Institute Grant to the Carnegie Institution of Washington. H. Y. gratefully acknowledges support through the JSPS. NR 41 TC 14 Z9 14 U1 0 U2 7 PU WILEY-BLACKWELL PUBLISHING, INC PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD SEP PY 2010 VL 45 IS 9 BP 1446 EP 1460 DI 10.1111/j.1945-5100.2010.01117.x PG 15 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 694NA UT WOS:000285303700003 ER PT J AU Oliveira, RJ Whitford, PC Chahine, J Leite, VBP Wang, J AF Oliveira, Ronaldo J. Whitford, Paul C. Chahine, Jorge Leite, Vitor B. P. Wang, Jin TI Coordinate and time-dependent diffusion dynamics in protein folding SO METHODS LA English DT Review DE Position dependent diffusion; Time-dependent diffusion; Transition state; Mean first-passage time; Cold shock protein; Single molecule; Molecular dynamic simulation ID SINGLE-MOLECULE FLUORESCENCE; ROUGH ENERGY LANDSCAPES; COLD-SHOCK PROTEIN; TRANSITION-STATE; CONFIGURATIONAL DIFFUSION; THERMOTOGA-MARITIMA; CHEMICAL-REACTIONS; LAMBDA-REPRESSOR; KINETICS; TEMPERATURE AB We developed both analytical and simulation methods to explore the diffusion dynamics in protein folding. We found the diffusion as a quantitative measure of escape from local traps along the protein folding funnel with chosen reaction coordinates has two remarkable effects on kinetics. At a fixed coordinate, local escape time depends on the distribution of barriers around it, therefore the diffusion is often time distributed. On the other hand, the environments (local escape barriers) change along the coordinates, therefore diffusion is coordinate dependent. The effects of time-dependent diffusion on folding can lead to non-exponential kinetics and non-Poisson statistics of folding time distribution. The effects of coordinate dependent diffusion on folding can lead to the change of the kinetic barrier height as well as the position of the corresponding transition state and therefore modify the folding kinetic rates as well as the kinetic routes. Our analytical models for folding are based on a generalized Fokker-Planck diffusion equation with diffusion coefficient both dependent on coordinate and time. Our simulation for folding are based on structure-based folding models with a specific fast folding protein CspTm studied experimentally on diffusion and folding with single molecules. The coordinate and time-dependent diffusion are especially important to be considered in fast folding and single molecule studies, when there is a small or no free energy barrier and kinetics is controlled by diffusion while underlying statistics of kinetics become important. Including the coordinate dependence of diffusion will challenge the transition state theory of protein folding. The classical transition state theory will have to be modified to be consistent. The more detailed folding mechanistic studies involving phi value analysis based on the classical transition state theory will also have to be quantitatively modified. Complex kinetics with multiple time scales may allow us not only to explore the folding kinetics but also probe the local landscape and barrier height distribution with single-molecule experiments. (C) 2010 Elsevier Inc. All rights reserved. C1 [Wang, Jin] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. [Wang, Jin] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA. [Oliveira, Ronaldo J.; Chahine, Jorge; Leite, Vitor B. P.] Univ Estadual Paulista, Dept Fis, Inst Biociencias Letras & Ciencias Exatas, BR-15054000 Sao Jose Do Rio Preto, Brazil. [Whitford, Paul C.] Los Alamos Natl Lab, Div Theoret, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA. [Whitford, Paul C.] Univ Calif Davis, Int Inst Complex Adapt Matter, Davis, CA 95616 USA. [Wang, Jin] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130021, Jilin, Peoples R China. RP Wang, J (reprint author), SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. EM jin.wang.1@stonybrook.edu RI Leite, Vitor/E-3550-2012; Chahine, Jorge/G-5064-2013; Oliveira, Ronaldo/H-4735-2012 OI Oliveira, Ronaldo/0000-0003-4860-309X FU CAPES, Brazil; CNPq; FAPESP, Brazil; NSF [PHY-0822283, MCB-0543906]; NSFC (China); US National Science Foundation I2CAM International Materials Institute [DMR-0645461]; LANL FX The authors thank Prof. Peter G. Wolynes, Prof. Jose N. Onuchic, Prof. Martin Gruebele, and Prof. Ben Schuler for helpful discussions. J.C and R.J.O were supported by CAPES, Brazil. R.J.O. V.B.P.L and J.C were partially supported by the Brazilian agency CNPq. V.B.P.L and R.J.O were supported by FAPESP, Brazil. J.W was partially supported by NSF Career Award, and NSFC (China). P.C.W thanks US National Science Foundation I2CAM International Materials Institute Award, Grant DMR-0645461, for funding this international collaboration. P.C.W is funded by a LANL Director's Fellowship. This work was also supported by the Center for Theoretical Biological Physics sponsored by the NSF (Grant PHY-0822283) with additional support from NSF - MCB-0543906. NR 55 TC 14 Z9 14 U1 0 U2 26 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1046-2023 J9 METHODS JI Methods PD SEP PY 2010 VL 52 IS 1 BP 91 EP 98 DI 10.1016/j.ymeth.2010.04.016 PG 8 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 651QD UT WOS:000281941300010 PM 20438841 ER PT J AU Heidelberg, KB Gilbert, JA Joint, I AF Heidelberg, Karla B. Gilbert, Jack A. Joint, Ian TI Marine genomics: at the interface of marine microbial ecology and biodiscovery SO MICROBIAL BIOTECHNOLOGY LA English DT Review ID OCEAN SAMPLING EXPEDITION; RNA GENE CLONING; UNCULTURED MICROORGANISMS; PLANKTONIC BACTERIA; ESCHERICHIA-COLI; SURFACE WATERS; SARGASSO SEA; DIVERSITY; COMMUNITY; BACTERIOPLANKTON AB The composition and activities of microbes from diverse habitats have been the focus of intense research during the past decade with this research being spurred on largely by advances in molecular biology and genomic technologies. In recent years environmental microbiology has entered very firmly into the age of the 'omics' - (meta)genomics, proteomics, metabolomics, transcriptomics - with probably others on the rise. Microbes are essential participants in all biogeochemical processes on our planet, and the practical applications of what we are learning from the use of molecular approaches has altered how we view biological systems. In addition, there is considerable potential to use information about uncultured microbes in biodiscovery research as microbes provide a rich source of discovery for novel genes, enzymes and metabolic pathways. This review explores the brief history of genomic and metagenomic approaches to study environmental microbial assemblages and describes some of the future challenges involved in broadening our approaches leading to new insights for understanding environmental problems and enabling biodiscovery research. C1 [Heidelberg, Karla B.] Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA. [Gilbert, Jack A.; Joint, Ian] Plymouth Marine Lab, Plymouth PL1 3DH, Devon, England. RP Heidelberg, KB (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM kheidelb@usc.edu FU National Science Foundation (NSF) [MCB 0732066, EF 0626526]; Natural Environment Research Council [NE/C507902/1]; European Commission; NSF FX This work is supported by National Science Foundation (NSF) grants MCB 0732066 and EF 0626526 to K.B.H. and by a Natural Environment Research Council (NE/C507902/1) award to I.J. The topic relates to a part of the core research programme of the Plymouth Marine Laboratory, a collaborative centre of NERC. K.B.H. and I.J. also acknowledge funding from the European Commission and NSF to attend the Joint EC-US CIESM Workshop on Marine Genomics: At the Interface of Marine Microbial Ecology and Biotechnological Applications in October 2008 in Monaco. This meeting and the resulting report provided the stimulation for the development of this manuscript (http://ec.europa.eu/research/biotechnology/ec-us/docs/monaco.pdf). NR 115 TC 17 Z9 18 U1 4 U2 60 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1751-7907 J9 MICROB BIOTECHNOL JI Microb. Biotechnol. PD SEP PY 2010 VL 3 IS 5 SI SI BP 531 EP 543 DI 10.1111/j.1751-7915.2010.00193.x PG 13 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA 753BN UT WOS:000289739300007 PM 20953417 ER PT J AU Plugge, CM Scholten, JCM Culley, DE Nie, L Brockman, FJ Zhang, WW AF Plugge, Caroline M. Scholten, Johannes C. M. Culley, David E. Nie, Lei Brockman, Fred J. Zhang, Weiwen TI Global transcriptomics analysis of the Desulfovibrio vulgaris change from syntrophic growth with Methanosarcina barkeri to sulfidogenic metabolism SO MICROBIOLOGY-SGM LA English DT Article ID SULFATE-REDUCING BACTERIA; GENE-EXPRESSION ANALYSIS; ELECTRON-TRANSFER; METHANE PRODUCTION; HEAT-SHOCK; OLIGONUCLEOTIDE MICROARRAYS; VULGATIS HILDENBOROUGH; ANAEROBIC-BACTERIA; MASS-SPECTROMETRY; OXIDATIVE STRESS AB Desulfovibrio vulgaris is a metabolically flexible micro-organism. It can use sulfate as an electron acceptor to catabolize a variety of substrates, or in the absence of sulfate can utilize organic acids and alcohols by forming a syntrophic association with a hydrogen-scavenging partner to relieve inhibition by hydrogen. These alternative metabolic types increase the chance of survival for D. vulgaris in environments where one of the potential external electron acceptors becomes depleted. In this work, whole-genome D. vulgaris microarrays were used to determine relative transcript levels as D. vulgaris shifted its metabolism from syntrophic in a lactate-oxidizing dual-culture with Methanosarcina barkeri to a sulfidogenic metabolism. Syntrophic dual-cultures were grown in two independent chemostats and perturbation was introduced after six volume changes with the addition of sulfate. The results showed that 132 genes were differentially expressed in D. vulgaris 2 h after addition of sulfate. Functional analyses suggested that genes involved in cell envelope and energy metabolism were the most regulated when comparing syntrophic and sulfidogenic metabolism. Upregulation was observed for genes encoding ATPase and the membrane-integrated energy-conserving hydrogenase (Ech) when cells shifted to a sulfidogenic metabolism. A five-gene cluster encoding several lipoproteins and membrane-bound proteins was downregulated when cells were shifted to a sulfidogenic metabolism. Interestingly, this gene cluster has orthologues found only in another syntrophic bacterium, Syntrophobacter fumaroxidans, and four recently sequenced Desulfovibrio strains. This study also identified several novel c-type cytochrome-encoding genes, which may be involved in the sulfidogenic metabolism. C1 [Scholten, Johannes C. M.; Culley, David E.; Brockman, Fred J.; Zhang, Weiwen] Pacific NW Natl Lab, Microbiol Grp, Richland, WA 99352 USA. [Plugge, Caroline M.] Wageningen Univ, Microbiol Lab, Wageningen, Netherlands. [Nie, Lei] Georgetown Univ, Dept Biostat Biomath & Bioinformat, Washington, DC USA. [Zhang, Weiwen] Arizona State Univ, Biodesign Inst, Ctr Ecogen, Tempe, AZ 85287 USA. RP Zhang, WW (reprint author), Pacific NW Natl Lab, Microbiol Grp, POB 999,Mail Stop J4-18, Richland, WA 99352 USA. EM Weiwen.Zhang@asu.edu FU US Department of Energy [DE-AC056-76RLO1830]; Netherlands Genome Initiative (NGI) FX The research described in this paper was conducted under the Laboratory Directed Research and Development (LDRD) Program at the Pacific North-West National Laboratory, a multi-program national laboratory operated by Battelle for the US Department of Energy under Contract DE-AC056-76RLO1830. Part of this research was financially supported by the Netherlands Genome Initiative (NGI). NR 52 TC 21 Z9 21 U1 2 U2 11 PU SOC GENERAL MICROBIOLOGY PI READING PA MARLBOROUGH HOUSE, BASINGSTOKE RD, SPENCERS WOODS, READING RG7 1AG, BERKS, ENGLAND SN 1350-0872 J9 MICROBIOL-SGM JI Microbiology-(UK) PD SEP PY 2010 VL 156 BP 2746 EP 2756 DI 10.1099/mic.0.038539-0 PN 9 PG 11 WC Microbiology SC Microbiology GA 659KP UT WOS:000282565700016 PM 20576691 ER PT J AU Sutton, EJ Henning, TD Boddington, S Demos, S Krug, C Meier, R Kornak, J Zhao, SJ Baehner, R Sharifi, S Daldrup-Link, H AF Sutton, Elizabeth Jane Henning, Tobias D. Boddington, Sophie Demos, Stavros Krug, Christian Meier, Reinhardt Kornak, John Zhao, Shoujun Baehner, Rick Sharifi, Sheida Daldrup-Link, Heike TI In Vivo Magnetic Resonance Imaging and Optical Imaging Comparison of Viable and Nonviable Mesenchymal Stem Cells with a Bifunctional Label SO MOLECULAR IMAGING LA English DT Article ID MR CONTRAST AGENTS; RHEUMATOID-ARTHRITIS; TRACKING; DIFFERENTIATION; TRANSPLANTATION; CHONDROGENESIS; FERUMOXIDES; PROGENITOR; MIGRATION; CAPACITY AB The purpose of this study was to compare viable and nonviable bilabeled mesenchymal stem cells (MSCs) in arthritic joints with magnetic resonance imaging (MRI) and optical imaging (OI). MSCs were labeled with ferucarbotran and DiD. MRI and OI of bilabeled cells were compared with controls. Six rats with arthritis received intra-articular injections of bilabeled viable MSCs into the right knee and nonviable MSCs into the left knee. Animals underwent MRI and OI preinjection and at 4, 24, 48, and 72 hours postinjection. The results were analyzed with a mixed random effects model and Fisher probability. Bilabeled MSCs showed increased MRI and OI signals compared to unlabeled controls (p < .0001). After intra-articular injection, bilabeled MSCs caused significant T-2 and T-2* effect on MRI and fluorescence on OI up to 72 hours postinjection (p < .05). There was no significant difference between viable and nonviable MSC signal in the knee joints; however, some of the viable cells migrated to an adjacent inflamed ankle joint (p < .05). Immunohistochemistry confirmed viable MSCs in right knee and ankle joints and nonviable MSCs in the left knee. Viable and nonviable cells could not be differentiated with MRI or OI signal intensity but were differentiated based on their ability to migrate in vivo. C1 [Sutton, Elizabeth Jane] Mt Auburn Hosp, Dept Radiol, Cambridge, MA 02138 USA. Mt Auburn Hosp, Dept Pathol, Cambridge, MA 02138 USA. Univ Calif San Francisco, Dept Radiol, San Francisco, CA 94143 USA. Univ Calif San Francisco, Dept Biomed Imaging, San Francisco, CA 94143 USA. Univ Calif San Francisco, Dept Pathol, San Francisco, CA 94143 USA. Tech Univ Munich, Dept Radiol, Munich, Germany. Lawrence Livermore Natl Lab, Livermore, CA USA. RP Sutton, EJ (reprint author), Mt Auburn Hosp, Dept Radiol, 330 Mt Auburn St, Cambridge, MA 02138 USA. EM esutton@mah.harvard.edu RI Daldrup-Link, Heike/D-9829-2012; Meier, Reinhard/B-2882-2014 OI Daldrup-Link, Heike/0000-0002-4929-819X; FU Society for Pediatric Radiology; National Institute of Arthritis and Musculoskeletal and Skin Diseases [NIH R01AR054458] FX Financial disclosure of authors: This work was supported, in part, by a seed grant from the Society for Pediatric Radiology and by the National Institute of Arthritis and Musculoskeletal and Skin Diseases (grant number NIH R01AR054458). NR 48 TC 21 Z9 22 U1 2 U2 10 PU B C DECKER INC PI HAMILTON PA 69 JOHN STREET SOUTH, STE 310, HAMILTON, ONTARIO L8N 2B9, CANADA SN 1535-3508 J9 MOL IMAGING JI Mol. Imaging PD SEP-OCT PY 2010 VL 9 IS 5 BP 278 EP 290 DI 10.2310/7290.2010.00029 PG 13 WC Biochemical Research Methods; Radiology, Nuclear Medicine & Medical Imaging SC Biochemistry & Molecular Biology; Radiology, Nuclear Medicine & Medical Imaging GA 670WE UT WOS:000283457200005 PM 20868628 ER PT J AU De, S Baron, E Hauschildt, PH AF De, Soma Baron, E. Hauschildt, P. H. TI Hydrogen recombination with multilevel atoms SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE atomic processes; supernovae: general; cosmology: miscellaneous ID COSMOLOGICAL RECOMBINATION; HELIUM RECOMBINATION; UNIVERSE; TRANSITIONS; EPOCH AB Hydrogen recombination is one of the most important atomic processes in many astrophysical objects such as Type II supernova (SN II) atmospheres, the high redshift Universe during the cosmological recombination era and H ii regions in the interstellar medium. Accurate predictions of the ionization fraction can be quite different from those given by a simple solution if one takes into account many angular momentum substates, non-resonant processes and calculates the rates of all atomic processes from the solution of the radiative transfer equation instead of using a Planck function under the assumption of thermal equilibrium. We use the general-purpose model atmosphere code phoenix 1D to compare how the fundamental probabilities such as the photoionization probability, the escape probability and the collisional de-excitation probability are affected by the presence of other metals in the environment, multiple angular momentum substates and non-resonant processes. Our comparisons are based on a model of SN 1999em, SNe Type II, 20 d after its explosion. C1 [De, Soma; Baron, E.] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA. [Baron, E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA. [Hauschildt, P. H.] Hamburger Sternwarte, D-21029 Hamburg, Germany. RP De, S (reprint author), Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA. EM baron@nhn.ou.edu RI Baron, Edward/A-9041-2009 OI Baron, Edward/0000-0001-5393-1608 FU NSF [AST-0707704]; Department of Energy [DE-FG02-07ER41517]; DFG [676 from the]; U.S. Department of Energy [DE-AC02-05CH11231]; Hochstleistungs Rechenzentrum Nord (HLRN) FX We thank the anonymous referee for helpful comments which significantly improved the presentation of this work. This work was supported in part by NSF grant AST-0707704, Department of Energy Award Number DE-FG02-07ER41517, and by SFB grant 676 from the DFG. 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, and the Hochstleistungs Rechenzentrum Nord (HLRN). We thank both these institutions for a generous allocation of computer time. NR 26 TC 4 Z9 4 U1 1 U2 1 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD SEP 1 PY 2010 VL 407 IS 1 BP 658 EP 668 DI 10.1111/j.1365-2966.2010.16953.x PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 641PN UT WOS:000281140900055 ER PT J AU Chin, HNS Caldwell, PM Bader, DC AF Chin, Hung-Neng S. Caldwell, Peter M. Bader, David C. TI Preliminary Study of California Wintertime Model Wet Bias SO MONTHLY WEATHER REVIEW LA English DT Article ID REGIONAL CLIMATE MODEL; NUMERICAL WEATHER PREDICTION; MIDLATITUDE SQUALL LINE; WESTERN UNITED-STATES; PART I; PACIFIC-NORTHWEST; 2 DIMENSIONS; PRECIPITATION; PARAMETERIZATION; SENSITIVITY AB The Weather Research and Forecasting (WRF) model version 3.0.1 is used in both short-range (days) and long-range (years) simulations to explore the California wintertime model wet bias. California is divided into four regions (the coast, central valley, mountains, and Southern California) for validation. Three sets of gridded surface observations are used to evaluate the impact of measurement uncertainty on the model wet bias. Short-range simulations are driven by the North American Regional Reanalysis (NARR) data and designed to test the sensitivity of model physics and grid resolution to the wet bias using eight winter storms chosen from four major types of large-scale conditions: the Pineapple Express, El Nino, La Nina, and synoptic cyclones. Control simulations are conducted with 12-km grid spacing (low resolution) but additional experiments are performed at 2-km (high) resolution to assess the robustness of microphysics and cumulus parameterizations to resolution changes. Additionally, long-range simulations driven by both NARR and general circulation model (GCM) data are performed at low resolution to gauge the impact of the GCM forcing on the model wet bias. These short- and long-range simulations show that low-resolution runs tend to underpredict precipitation in the coast region and overpredict it elsewhere in California. The sensitivity test of WRF physics in short- range simulations indicates that model precipitation depends most strongly on the microphysics scheme, though convective parameterization is also important, particularly near the coast. In contrast, high-resolution (2 km) simulation increases model precipitation in all regions. As a result, it improves the forecast bias in the coast region while it downgrades the model performance in the other regions. It is also found that the choice of validation dataset has a significant impact on the model wet bias of both short- and long-range simulations. However, this impact in long-range simulations appears to be a secondary contribution as compared to its counterpart from the GCM forcing. C1 [Chin, Hung-Neng S.; Caldwell, Peter M.; Bader, David C.] Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94551 USA. RP Chin, HNS (reprint author), Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, POB 808,L-103, Livermore, CA 94551 USA. EM chin2@llnl.gov RI Bader, David/H-6189-2011; Caldwell, Peter/K-1899-2014 OI Bader, David/0000-0003-3210-339X; FU U.S. Department of Energy [DE- AC52-07NA27344] FX The authors wish to thank Drs. J. Dudhia and W. Wang for help with WRF, NOAA's Earth Science Research Laboratory/Physical Sciences Division and National Climatic Data Center, the University of Washington, the Earth System Grid system for making the needed datasets available online, and the journal reviewers for their valuable comments. 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 56 TC 6 Z9 6 U1 0 U2 3 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0027-0644 J9 MON WEATHER REV JI Mon. Weather Rev. PD SEP PY 2010 VL 138 IS 9 BP 3556 EP 3571 DI 10.1175/2010MWR3409.1 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 656CO UT WOS:000282303700011 ER PT J AU Xu, GY Torres, CM Zhang, YG Liu, F Song, EB Wang, MS Zhou, Y Zeng, CF Wang, KL AF Xu, Guangyu Torres, Carlos M., Jr. Zhang, Yuegang Liu, Fei Song, Emil B. Wang, Minsheng Zhou, Yi Zeng, Caifu Wang, Kang L. TI Effect of Spatial Charge Inhomogeneity on 1/f Noise Behavior in Graphene SO NANO LETTERS LA English DT Article DE Graphene; spatial charge inhomogeneity; Dirac point; 1/f noise ID BILAYER GRAPHENE; IMPURITY SCATTERING; DEVICES; TRANSPORT AB Scattering mechanisms in graphene are critical to understanding the limits of signal-to-noise ratios of unsuspended graphene devices. Here we present the four-probe low-frequency noise (1/f) characteristics in back-gated single layer graphene (SLG) and bilayer graphene (BLG) samples. Contrary to the expected noise increase with the resistance, the noise for SLG decreases near the Dirac point, possibly due to the effects of the spatial charge inhomogeneity. For BLG, a similar noise reduction near the Dirac point is observed, but with a different gate dependence of its noise behavior. Some possible reasons for the different noise behavior between SLG and BLG are discussed. C1 [Zhang, Yuegang] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA. [Xu, Guangyu; Torres, Carlos M., Jr.; Song, Emil B.; Wang, Minsheng; Zhou, Yi; Zeng, Caifu; Wang, Kang L.] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA. [Liu, Fei] IBM TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA. RP Zhang, YG (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM yzhang5@lbl.gov; wang@ee.ucla.edu RI Zhang, Y/E-6600-2011 OI Zhang, Y/0000-0003-0344-8399 FU Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231] FX The authors gratefully acknowledge the discussions from F. Miao, X. Zhang, and F. X. Xiu, and experimental help from S. Aloni, T. Kuykendall, Z. J. Xu, and J. W. Bai. We thank E. Rossi, E. H. Hwang, and S. Adam from S. Das Sarma's group for theoretical discussions. This work was in part supported by MARCO Focus Center on Functional Engineered Nano Architectonics (FENA), monitored by Dr. Betsy Weitzman. The work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. NR 38 TC 50 Z9 50 U1 2 U2 34 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP PY 2010 VL 10 IS 9 BP 3312 EP 3317 DI 10.1021/nl100985z 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 645WZ UT WOS:000281498200016 PM 20684526 ER PT J AU Armatas, GS Kanatzidis, MG AF Armatas, Gerasimos S. Kanatzidis, Mercouri G. TI Size Dependence in Hexagonal Mesoporous Germanium: Pore Wall Thickness versus Energy Gap and Photoluminescence SO NANO LETTERS LA English DT Article DE Mesoporous; zintl compounds; nanoporous; quantum confinement ID GE-9(4-) ZINTL ANIONS; POROUS SILICON; QUANTUM CONFINEMENT; GE NANOCRYSTALS; LINEAR TRIMER; CLUSTERS; SEMICONDUCTORS; NANOPARTICLES; AEROGELS; NANOROD AB A series of hexagonal mesoporous germanium semiconductors with tunable wall thickness is reported. These nanostructures possess uniform pores of 3.1-3.2 nm, wall thicknesses from 1.3 to 2.2 nm, and large internal BET surface area in the range of 404-451 m(2)/g. The porous Ge framework of these materials is assembled from the templated oxidative self-polymerization of (Ge(9))(4-) Zintl clusters. Total X-ray scattering analysis supports a model of interconnected deltahedral (Ge(9))-cluster forming the framework and X-ray photoelectron spectroscopy indicates nearly zero-valence Ge atoms. We show the controllable tuning of the pore wall thickness and its impact on the energy band gap which increases systematically with diminishing wall thickness. Furthermore, there is room temperature photoluminescence emission which shifts correspondingly from 672 to 640 nm. The emission signal can be quenched via energy transfer with organic molecules such as pyridine diffusing into the pores. C1 [Armatas, Gerasimos S.; Kanatzidis, Mercouri G.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. [Kanatzidis, Mercouri G.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Armatas, Gerasimos S.] Univ Crete, Dept Mat Sci & Technol, Iraklion 71003, Crete, Greece. RP Kanatzidis, MG (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA. EM m-kanatzidis@northwestern.edu RI Armatas, Gerasimos/F-4753-2011 OI Armatas, Gerasimos/0000-0001-9475-1929 FU Nanoscale Science and Engineering Initiative of the National Science Foundation [EEC-0647560]; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001059] FX We thank P. Chupas from the Materials Science Division, Argonne National Laboratory (Chicago, IL) for help with the handling the PDF data. Financial support from the Nanoscale Science and Engineering Initiative of the National Science Foundation under NSF Award Number EEC-0647560 is gratefully acknowledged. This work made use of the Electron Probe Instrumentation Center (EPIC) and Keck Interdisciplinary Surface Science (Keck-II) facility of NUANCE center at Northwestern University. This work was supported as part of the ANSER Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under award DE-SC0001059. NR 47 TC 22 Z9 22 U1 1 U2 19 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP PY 2010 VL 10 IS 9 BP 3330 EP 3336 DI 10.1021/nl101004q 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 645WZ UT WOS:000281498200019 PM 20698483 ER PT J AU Pollak, E Geng, BS Jeon, KJ Lucas, IT Richardson, TJ Wang, F Kostecki, R AF Pollak, Elad Geng, Baisong Jeon, Ki-Joon Lucas, Ivan T. Richardson, Thomas J. Wang, Feng Kostecki, Robert TI The Interaction of Li+ with Single-Layer and Few-Layer Graphene SO NANO LETTERS LA English DT Article DE graphene; lithium intercalation; CVD; Raman spectroscopy ID INTERCALATION COMPOUNDS; RAMAN-SCATTERING; ION BATTERIES; GRAPHITE; LITHIUM; STORAGE AB The interaction of Li+ with single and few layer graphene is reported. In situ Raman spectra were collected during the electrochemical lithiation of the single- and few-layer graphene. While the interaction of lithium with few layer graphene seems to resemble that of graphite, single layer graphene behaves very differently. The amount of lithium absorbed on single layer graphene seems to be greatly reduced due to repulsion forces between Li+ at both sides of graphene layer. C1 [Pollak, Elad; Jeon, Ki-Joon; Lucas, Ivan T.; Richardson, Thomas J.; Kostecki, Robert] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. [Geng, Baisong; Wang, Feng] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Geng, Baisong; Wang, Feng] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Kostecki, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. EM r_kostecki@lbl.gov RI wang, Feng/I-5727-2015; LUCAS, Ivan /S-5742-2016 OI LUCAS, Ivan /0000-0001-8930-0437 FU U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001294] FX This material is based upon work supported as part of the Northeastern Center for Chemical Energy Storage, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under award number DE-SC0001294. NR 27 TC 119 Z9 122 U1 4 U2 120 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 SEP PY 2010 VL 10 IS 9 BP 3386 EP 3388 DI 10.1021/nl101223k PG 3 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 645WZ UT WOS:000281498200028 PM 20677788 ER PT J AU Cao, L Nome, RA Montgomery, JM Gray, SK Scherer, NF AF Cao, Lina Nome, Rene A. Montgomery, Jason M. Gray, Stephen K. Scherer, Norbert F. TI Controlling Plasmonic Wave Packets in Silver Nanowires SO NANO LETTERS LA English DT Article DE Nanophotonics; surface plasmons; nanowires; wave packet; control AB Three-dimensional finite-difference time-domain simulations were performed to explore the excitation of surface plasmon resonances in long silver (Ag) nanowires. In particular, we show that it is possible to generate plasmonic wave packets that can propagate along the nanowire by exciting superpositions of surface plasmon resonances. By using an appropriately chirped pulse, it is possible to transiently achieve localization of the excitation at the distal end of the nanowire. Such designed coherent superpositions will allow realizing spatiotemporal control of plasmonic excitations for enhancing nonlinear responses in plasmonic "circuits". C1 [Cao, Lina; Montgomery, Jason M.; Gray, Stephen K.; Scherer, Norbert F.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [Cao, Lina; Nome, Rene A.; Scherer, Norbert F.] Univ Chicago, Dept Chem, Chicago, IL 60637 USA. [Cao, Lina; Nome, Rene A.; Scherer, Norbert F.] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA. RP Gray, SK (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. EM gray@anl.gov; nfschere@uchicago.edu RI Nome, Rene/E-6714-2012; Catalise, Inct/K-2293-2013 FU University of Chicago - Argonne National Laboratory Joint Theory Institute (JTI); U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX We thank Dr. Matthew Pelton for many helpful discussions. We acknowledge financial support from the University of Chicago - Argonne National Laboratory Joint Theory Institute (JTI) program. 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 26 TC 30 Z9 31 U1 1 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 SEP PY 2010 VL 10 IS 9 BP 3389 EP 3394 DI 10.1021/nl101285t 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 645WZ UT WOS:000281498200029 PM 20704322 ER PT J AU Balke, N Jesse, S Kim, Y Adamczyk, L Tselev, A Ivanov, IN Dudney, NJ Kalinin, SV AF Balke, Nina Jesse, Stephen Kim, Yoongu Adamczyk, Leslie Tselev, Alexander Ivanov, Ilia N. Dudney, Nancy J. Kalinin, Sergei V. TI Real Space Mapping of Li-Ion Transport in Amorphous Si Anodes with Nanometer Resolution SO NANO LETTERS LA English DT Article DE Li-ion battery; thin films; scanning probe microscopy ID BATTERIES; SURFACES; FILMS AB The electrical bias driven Li-ion motion in silicon anode materials in thin film,battery heterostructures is investigated using electrochemical strain microscopy (ESM), which is a newly developed scanning probe microscopy based characterization method. ESM utilizes the intrinsic link between bias-controlled Li-ion concentration and molar volume of electrode materials, providing the capability for studies on the sub-20 rim scale, and allows the relationship between Li-ion flow and microstructure to be established. The evolution of Li-ion transport during the battery charging is directly observed. C1 [Balke, Nina; Jesse, Stephen; Tselev, Alexander; Ivanov, Ilia N.; Kalinin, Sergei V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Kim, Yoongu; Adamczyk, Leslie; Dudney, Nancy J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Balke, N (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, POB 2008,M56487, Oak Ridge, TN 37831 USA. EM balken@ornl.gov RI Tselev, Alexander/L-8579-2015; Balke, Nina/Q-2505-2015; Jesse, Stephen/D-3975-2016; Dudney, Nancy/I-6361-2016; Kalinin, Sergei/I-9096-2012; ivanov, ilia/D-3402-2015 OI Tselev, Alexander/0000-0002-0098-6696; Balke, Nina/0000-0001-5865-5892; Jesse, Stephen/0000-0002-1168-8483; Dudney, Nancy/0000-0001-7729-6178; Kalinin, Sergei/0000-0001-5354-6152; ivanov, ilia/0000-0002-6726-2502 FU U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [ERKCC61]; Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy [CNMS2010-098, CNMS2010-099] FX This material is based upon work supported as part of 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 under Award Number ERKCC61 (N.B., N.D., S.V.K.). Research at the ORNL's Center for Nanophase Materials Sciences in the project CNMS2010-098 and CNMS2010-099 was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy (N.B., S.J., I.N.I.). N.B. acknowledges the NR 17 TC 123 Z9 123 U1 11 U2 104 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP PY 2010 VL 10 IS 9 BP 3420 EP 3425 DI 10.1021/nl101439x 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 645WZ UT WOS:000281498200034 PM 20672826 ER PT J AU McMahon, JM Gray, SK Schatz, GC AF McMahon, Jeffrey M. Gray, Stephen K. Schatz, George C. TI Optical Properties of Nanowire Dimers with a Spatially Nonlocal Dielectric Function SO NANO LETTERS LA English DT Article DE FDTD; field enhancement; nanowire; nonlocal dielectric ID ENHANCED RAMAN-SCATTERING; SINGLE-MOLECULE; METALLIC-FILMS; SURFACE; NANOPARTICLES; SPECTROSCOPY; SPHERES AB We study the optical spectra and electromagnetic field enhancements around cylindrical and triangular Ag nanowire dimers, allowing for a spatially nonlocal dielectric function that partially accounts for quantum mechanical effects. For the triangular structures, we pay particular attention to how these properties depend on the sharpness of the nanowire's tips We demonstrate that significant differences exist from classical electrodynamics that employs a more common, spatially local dielectric function. These differences are shown to arise from the optical excitation of volume plasmons inside of the structures, analogous to one-particle quantum mechanical states, which lead to complex and striking patterns of material polarization. These results are important for further understanding the optical properties of structures at the nanoscale and have implications for numerous physical processes, such as surface-enhanced Raman scattering. C1 [McMahon, Jeffrey M.; Schatz, George C.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. [McMahon, Jeffrey M.; Gray, Stephen K.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP McMahon, JM (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA. EM jeffrey-mcmahon@northwestern.edu FU U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0004752, DE-AC02-06CH11357] FX J.M.M. and G.C.S. were supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award Number DE-SC0004752. 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 36 TC 76 Z9 76 U1 3 U2 42 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP PY 2010 VL 10 IS 9 BP 3473 EP 3481 DI 10.1021/nl101606j PG 9 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 645WZ UT WOS:000281498200043 PM 20715807 ER PT J AU Gao, L Guest, JR Guisinger, NP AF Gao, Li Guest, Jeffrey R. Guisinger, Nathan P. TI Epitaxial Graphene on Cu(111) SO NANO LETTERS LA English DT Article DE Graphene; Cu(111); scanning tunneling microscopy ID CARBON; GRAPHITE; CRYSTALS; COPPER; FILMS; GAS AB The growth of graphene on single crystal Cu(111) has been achieved by thermal decomposition of ethylene in an ultrahigh vacuum chamber for the first time. The structural and electronic properties of graphene on Cu(111) have been investigated by scanning tunneling microscopy and spectroscopy. The nucleation of monolayer islands and two predominant domain orientations have been observed, which lead to the formation of numerous domain boundaries with increasing coverage. These results reveal that reducing the density of domain boundaries is one challenge of growing high-quality graphene on copper. C1 [Gao, Li; Guest, Jeffrey R.; Guisinger, Nathan P.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Guisinger, NP (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave,Bldg 440, Argonne, IL 60439 USA. EM nguisinger@anl.gov RI Gao, Li/B-7150-2008; Guest, Jeffrey/B-2715-2009 OI Guest, Jeffrey/0000-0002-9756-8801 FU U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]; U.S. Department of Energy [DE-FG02-09ER16109] FX The use of the Center for Nanoscale Materials at Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. This work was also supported by the U.S. Department of Energy, "SISGR", Contract No. DE-FG02-09ER16109. The authors thank B. L. Fisher for his technical assistance. NR 26 TC 392 Z9 399 U1 27 U2 306 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP PY 2010 VL 10 IS 9 BP 3512 EP 3516 DI 10.1021/nl1016706 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 645WZ UT WOS:000281498200050 PM 20677798 ER PT J AU Sun, YG Ren, Y Haeffner, DR Almer, JD Wang, L Yang, WG Truong, TT AF Sun, Yugang Ren, Yang Haeffner, Dean R. Almer, Jonathan D. Wang, Lin Yang, Wenge Truong, Tu T. TI Nanophase Evolution at Semiconductor/Electrolyte Interface in Situ Probed by Time-Resolved High-Energy Synchrotron X-ray Diffraction SO NANO LETTERS LA English DT Article DE Time-resolved X-ray diffraction; in situ probing; galvanic reaction; silver nanoplates ID GOLD NANOPARTICLES; SUPERCRITICAL WATER; GROWTH; GAAS; NUCLEATION; SCATTERING; CELLS; PHOTOCATHODES; PHOTOCURRENT; SPECTROSCOPY AB Real-time evolution of nanoparticles grown at the semiconductor/electrolyte interface formed between a single crystalline n-type GaAs wafer and an aqueous solution of AgNO3 has been studied by using high-energy synchrotron X-ray diffraction. The results reveal the distinct nucleation and growth steps involved in the growth of anisotropic Ag nanoplates on the surface of the GaAs wafer. For the first time, a quick transit stage is observed to be responsible for the structural transformation of the nuclei to form structurally stable seeds that are critical for guiding their anisotropic growth into nanoplates. Reaction between a GaAs wafer and AgNO3 solution at room temperature primarily produces Ag nanoplates on the surface of the GaAs Wafer in the dark and at room temperature. In contrast, X-ray irradiation can induce charge separation in the GaAs wafer to drive the growth of nanoparticles made of silver oxy salt (Ag7NO11) and silver arsenate (Ag3AsO4) at the semiconductor/electrolyte interface if the GaAs wafer is illuminated by the X-ray and reaction time is long enough. C1 [Sun, Yugang; Truong, Tu T.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [Ren, Yang; Haeffner, Dean R.; Almer, Jonathan D.] Argonne Natl Lab, Xray Sci Div, Adv Photon Source, Argonne, IL 60439 USA. [Wang, Lin; Yang, Wenge] Carnegie Inst Sci, Geophys Lab, HPSync, Argonne, IL 60439 USA. RP Sun, YG (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. EM ygsun@anl.gov RI Truong, Tu/E-7029-2011; Sun, Yugang /A-3683-2010; Yang, Wenge/H-2740-2012; WANG, LIN/G-7884-2012 OI Sun, Yugang /0000-0001-6351-6977; FU U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX Use of the Center for Nanoscale Materials, Advanced Photon Source, and the Electron Microscopy Center for Materials Research at Argonne was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. NR 38 TC 18 Z9 18 U1 2 U2 22 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP PY 2010 VL 10 IS 9 BP 3747 EP 3753 DI 10.1021/nl102458k 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 645WZ UT WOS:000281498200088 PM 20681550 ER PT J AU Li, ZZ Rochford, C Baca, FJ Liu, JW Li, J Wu, J AF Li, Zhuangzhi Rochford, Caitlin Baca, F. Javier Liu, Jianwei Li, Jun Wu, Judy TI Investigation into Photoconductivity in Single CNF/TiO2-Dye Core-Shell Nanowire Devices SO NANOSCALE RESEARCH LETTERS LA English DT Article DE Photoconductivity; Nanowire; Titanium dioxide; Dye-sensitized solar cell; Core-shell ID SENSITIZED SOLAR-CELLS; ALIGNED CARBON NANOFIBERS; THIN-FILMS; NANOTUBE; ARRAYS; EFFICIENCY; TRANSPORT AB A vertically aligned carbon nanofiber array coated with anatase TiO2 (CNF/TiO2) is an attractive possible replacement for the sintered TiO2 nanoparticle network in the original dye-sensitized solar cell (DSSC) design due to the potential for improved charge transport and reduced charge recombination. Although the reported efficiency of 1.1% in these modified DSSC's is encouraging, the limiting factors must be identified before a higher efficiency can be obtained. This work employs a single nanowire approach to investigate the charge transport in individual CNF/TiO2 core-shell nanowires with adsorbed N719 dye molecules in dark and under illumination. The results shed light on the role of charge traps and dye adsorption on the (photo) conductivity of nanocrystalline TiO2 CNF's as related to dye-sensitized solar cell performance. C1 [Rochford, Caitlin; Wu, Judy] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA. [Li, Zhuangzhi] Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China. [Li, Zhuangzhi] Hebei Adv Thin Film Lab, Shijiazhuang 050016, Peoples R China. [Baca, F. Javier] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Liu, Jianwei; Li, Jun] Kansas State Univ, Dept Chem, Manhattan, KS 66506 USA. RP Rochford, C (reprint author), Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA. EM caitlinr@ku.edu RI Li, Jun/H-7771-2013; OI Li, Jun/0000-0002-3689-8946; Rochford, Caitlin/0000-0002-5070-209X FU NSF EPSCoR; NSF; ARO; Kansas State University FX The authors acknowledge support from the NSF EPSCoR for this work. CR recognizes a NSF Graduate Research Fellowship. JW is supported in part by ARO and NSF. JL also thanks Kansas State University for financial support. NR 35 TC 14 Z9 15 U1 1 U2 26 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1931-7573 J9 NANOSCALE RES LETT JI Nanoscale Res. Lett. PD SEP PY 2010 VL 5 IS 9 BP 1480 EP 1486 DI 10.1007/s11671-010-9665-3 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 637VE UT WOS:000280846000017 ER PT J AU Lowe, AR Siegel, JJ Kalab, P Siu, M Weis, K Liphardt, JT AF Lowe, Alan R. Siegel, Jake J. Kalab, Petr Siu, Merek Weis, Karsten Liphardt, Jan T. TI Selectivity mechanism of the nuclear pore complex characterized by single cargo tracking SO NATURE LA English DT Article ID PHENYLALANINE-GLYCINE NUCLEOPORINS; PROTEIN IMPORT; TRANSLOCATION; TRANSPORT; MOLECULE; DIFFUSION; HYDROGEL; BETA AB The nuclear pore complex (NPC) mediates all exchange between the cytoplasm and the nucleus. Small molecules can passively diffuse through the NPC, whereas larger cargos require transport receptors to translocate(1). How the NPC facilitates the translocation of transport receptor/cargo complexes remains unclear. To investigate this process, we tracked single protein-functionalized quantum dot cargos as they moved through human NPCs. Here we show that import proceeds by successive substeps comprising cargo capture, filtering and translocation, and release into the nucleus. Most quantum dots are rejected at one of these steps and return to the cytoplasm, including very large cargos that abort at a size-selective barrier. Cargo movement in the central channel is subdiffusive and cargos that can bind more transport receptors diffuse more freely. Without Ran GTPase, a critical regulator of transport directionality(1), cargos still explore the entire NPC, but have a markedly reduced probability of exit into the nucleus, suggesting that NPC entry and exit steps are not equivalent and that the pore is functionally asymmetric to importing cargos. The overall selectivity of the NPC seems to arise from the cumulative action of multiple reversible substeps and a final irreversible exit step. C1 [Lowe, Alan R.; Siegel, Jake J.; Weis, Karsten; Liphardt, Jan T.] Univ Calif Berkeley, QB3, Berkeley, CA 94720 USA. [Lowe, Alan R.; Liphardt, Jan T.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Lowe, Alan R.; Liphardt, Jan T.] Univ Calif Berkeley, Bay Area Phys Sci Oncol Ctr, Berkeley, CA 94720 USA. [Siegel, Jake J.; Siu, Merek; Liphardt, Jan T.] Univ Calif Berkeley, Biophys Grad Grp, Berkeley, CA 94720 USA. [Kalab, Petr; Weis, Karsten] Univ Calif Berkeley, Dept Mol & Cellular Biol, Berkeley, CA 94720 USA. [Lowe, Alan R.; Liphardt, Jan T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Weis, K (reprint author), Univ Calif Berkeley, QB3, Berkeley, CA 94720 USA. EM kweis@berkeley.edu RI Weis, Karsten/F-5719-2011; Liphardt, Jan/A-5906-2012; Kalab, Petr/B-2478-2009; OI Weis, Karsten/0000-0001-7224-925X; Lowe, Alan/0000-0002-0558-3597; Liphardt, Jan/0000-0003-2835-5025 FU NIH [GM058065, GM77856]; NCI [U54CA143836] FX We thank H. Agarwal for help with initial experiments; H. Aaron, A. Fischer and B. Cohen for use of facilities and discussions; the Bustamante, Chu and Krantz laboratories for use of equipment; and C. Bustamante, M. Welch and D. Grunwald for discussions and comments on the manuscript. This work was partially funded by the NIH (GM058065 to K.W. and GM77856 to J.T.L.) and the NCI (U54CA143836 to J.T.L.). NR 28 TC 76 Z9 77 U1 11 U2 61 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD SEP PY 2010 VL 467 IS 7315 BP 600 EP U126 DI 10.1038/nature09285 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 655TT UT WOS:000282273100041 PM 20811366 ER PT J AU Demir, E Cary, MP Paley, S Fukuda, K Lemer, C Vastrik, I Wu, GN D'Eustachio, P Schaefer, C Luciano, J Schacherer, F Martinez-Flores, I Hu, ZJ Jimenez-Jacinto, V Joshi-Tope, G Kandasamy, K Lopez-Fuentes, AC Mi, HY Pichler, E Rodchenkov, I Splendiani, A Tkachev, S Zucker, J Gopinath, G Rajasimha, H Ramakrishnan, R Shah, I Syed, M Anwar, N Babur, O Blinov, M Brauner, E Corwin, D Donaldson, S Gibbons, F Goldberg, R Hornbeck, P Luna, A Murray-Rust, P Neumann, E Reubenacker, O Samwald, M van Iersel, M Wimalaratne, S Allen, K Braun, B Whirl-Carrillo, M Cheung, KH Dahlquist, K Finney, A Gillespie, M Glass, E Gong, L Haw, R Honig, M Hubaut, O Kane, D Krupa, S Kutmon, M Leonard, J Marks, D Merberg, D Petri, V Pico, A Ravenscroft, D Ren, LY Shah, N Sunshine, M Tang, R Whaley, R Letovksy, S Buetow, KH Rzhetsky, A Schachter, V Sobral, BS Dogrusoz, U McWeeney, S Aladjem, M Birney, E Collado-Vides, J Goto, S Hucka, M Le Novere, N Maltsev, N Pandey, A Thomas, P Wingender, E Karp, PD Sander, C Bader, GD AF Demir, Emek Cary, Michael P. Paley, Suzanne Fukuda, Ken Lemer, Christian Vastrik, Imre Wu, Guanming D'Eustachio, Peter Schaefer, Carl Luciano, Joanne Schacherer, Frank Martinez-Flores, Irma Hu, Zhenjun Jimenez-Jacinto, Veronica Joshi-Tope, Geeta Kandasamy, Kumaran Lopez-Fuentes, Alejandra C. Mi, Huaiyu Pichler, Elgar Rodchenkov, Igor Splendiani, Andrea Tkachev, Sasha Zucker, Jeremy Gopinath, Gopal Rajasimha, Harsha Ramakrishnan, Ranjani Shah, Imran Syed, Mustafa Anwar, Nadia Babur, Oezguen Blinov, Michael Brauner, Erik Corwin, Dan Donaldson, Sylva Gibbons, Frank Goldberg, Robert Hornbeck, Peter Luna, Augustin Murray-Rust, Peter Neumann, Eric Reubenacker, Oliver Samwald, Matthias van Iersel, Martijn Wimalaratne, Sarala Allen, Keith Braun, Burk Whirl-Carrillo, Michelle Cheung, Kei-Hoi Dahlquist, Kam Finney, Andrew Gillespie, Marc Glass, Elizabeth Gong, Li Haw, Robin Honig, Michael Hubaut, Olivier Kane, David Krupa, Shiva Kutmon, Martina Leonard, Julie Marks, Debbie Merberg, David Petri, Victoria Pico, Alex Ravenscroft, Dean Ren, Liya Shah, Nigam Sunshine, Margot Tang, Rebecca Whaley, Ryan Letovksy, Stan Buetow, Kenneth H. Rzhetsky, Andrey Schachter, Vincent Sobral, Bruno S. Dogrusoz, Ugur McWeeney, Shannon Aladjem, Mirit Birney, Ewan Collado-Vides, Julio Goto, Susumu Hucka, Michael Le Novere, Nicolas Maltsev, Natalia Pandey, Akhilesh Thomas, Paul Wingender, Edgar Karp, Peter D. Sander, Chris Bader, Gary D. TI The BioPAX community standard for pathway data sharing SO NATURE BIOTECHNOLOGY LA English DT Article ID SYSTEMS BIOLOGY; COLLABORATIVE CONSTRUCTION; SOFTWARE ENVIRONMENT; INTERACTION NETWORK; CELLULAR PATHWAYS; REPRESENTATION; ONTOLOGY; INFORMATION; CANCER; KNOWLEDGEBASE AB Biological Pathway Exchange (BioPAX) is a standard language to represent biological pathways at the molecular and cellular level and to facilitate the exchange of pathway data. The rapid growth of the volume of pathway data has spurred the development of databases and computational tools to aid interpretation; however, use of these data is hampered by the current fragmentation of pathway information across many databases with incompatible formats. BioPAX, which was created through a community process, solves this problem by making pathway data substantially easier to collect, index, interpret and share. BioPAX can represent metabolic and signaling pathways, molecular and genetic interactions and gene regulation networks. Using BioPAX, millions of interactions, organized into thousands of pathways, from many organisms are available from a growing number of databases. This large amount of pathway data in a computable form will support visualization, analysis and biological discovery. (C) 2010 Nature America, Inc. All rights reserved. C1 [Rodchenkov, Igor; Donaldson, Sylva; Bader, Gary D.] Univ Toronto, Banting & Best Dept Med Res, Donnelly Ctr Cellular & Biomol Res, Toronto, ON, Canada. [Demir, Emek; Cary, Michael P.; Anwar, Nadia; Babur, Oezguen; Sander, Chris] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA. [Demir, Emek; Babur, Oezguen; Dogrusoz, Ugur] Bilkent Univ, Ctr Bioinformat, Ankara, Turkey. [Demir, Emek; Babur, Oezguen; Dogrusoz, Ugur] Bilkent Univ, Dept Comp Engn, Ankara, Turkey. [Mi, Huaiyu; Thomas, Paul] SRI Int, Ctr Artificial Intelligence, Menlo Pk, CA 94025 USA. [Fukuda, Ken] Japan Sci & Technol Agcy, Inst Bioinformat Res & Dev, Tokyo, Japan. [Lemer, Christian; Hubaut, Olivier] Univ Libre Bruxelles, Brussels, Belgium. [Vastrik, Imre; Birney, Ewan; Le Novere, Nicolas] European Bioinformat Inst, Cambridge, England. [Wu, Guanming; Haw, Robin] Ontario Inst Canc Res, Toronto, ON, Canada. [D'Eustachio, Peter] NYU, Sch Med, New York, NY USA. [Schaefer, Carl] NCI, Ctr Biomed Informat & Informat Technol, Rockville, MD USA. [Luciano, Joanne] Predict Med, Belmont, MA USA. [Schacherer, Frank; Braun, Burk] BIOBASE Corp, Beverly, MA USA. [Martinez-Flores, Irma; Jimenez-Jacinto, Veronica; Collado-Vides, Julio] Univ Nacl Autonoma Mexico, Ctr Ciencias Genom, Cuernavaca 62191, Morelos, Mexico. [Hu, Zhenjun] Boston Univ, Biomol Syst Lab, Boston, MA 02215 USA. [Joshi-Tope, Geeta; Ren, Liya] Cold Spring Harbor Lab, Cold Spring Harbor, NY 11724 USA. [Kandasamy, Kumaran; Pandey, Akhilesh] Johns Hopkins Univ, McKusick Nathans Inst Genet Med, Baltimore, MD USA. [Kandasamy, Kumaran; Pandey, Akhilesh] Johns Hopkins Univ, Dept Biol Chem, Baltimore, MD USA. [Kandasamy, Kumaran; Pandey, Akhilesh] Johns Hopkins Univ, Dept Pathol, Baltimore, MD USA. [Kandasamy, Kumaran; Pandey, Akhilesh] Johns Hopkins Univ, Dept Oncol, Baltimore, MD USA. [Splendiani, Andrea] Univ Rennes 1, Fac Med, Rennes, France. [Splendiani, Andrea] Rothamsted Res, Harpenden, Herts, England. [Tkachev, Sasha; Hornbeck, Peter] Cell Signaling Technol Inc, Danvers, MA USA. [Zucker, Jeremy] Broad Inst, Cambridge, MA USA. [Gopinath, Gopal] US FDA, Ctr Food Safety & Appl Nutr, Laurel, MD USA. [Rajasimha, Harsha; Sobral, Bruno S.] Virginia Polytech Inst & State Univ, Virginia Bioinformat Inst, Blacksburg, VA 24061 USA. [Rajasimha, Harsha] NEI, Neurobiol Neurodegenerat & Repair Lab, NIH, Bethesda, MD 20892 USA. [Ramakrishnan, Ranjani; McWeeney, Shannon] Oregon Hlth & Sci Univ, Dept Behav Neurosci, Portland, OR 97201 USA. [Shah, Imran] US Environm Protect Agcy Durham, Durham, NC USA. [Syed, Mustafa; Glass, Elizabeth; Maltsev, Natalia] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. [Blinov, Michael] Univ Connecticut, Ctr Hlth, Farmington, CT USA. [Brauner, Erik; Gibbons, Frank] Harvard Univ, Sch Med, Dept Biol Chem & Mol Pharmacol, Boston, MA 02115 USA. [Corwin, Dan] Lexikos Corp, Boston, MA USA. [Goldberg, Robert] Natl Inst Stand & Technol, Div Biotechnol, Gaithersburg, MD 20899 USA. [Luna, Augustin; Sunshine, Margot; Aladjem, Mirit] NCI, Ctr Canc Res, NIH, Bethesda, MD 20892 USA. [Murray-Rust, Peter] Univ Cambridge, Dept Chem, Unilever Ctr Mol Sci Informat, Cambridge CB2 1EW, England. [Neumann, Eric] Clin Semant Grp, Lexington, MA USA. [Reubenacker, Oliver] Univ Connecticut, Ctr Hlth, Ctr Cell Anal & Modeling, Storrs, CT USA. [Samwald, Matthias] Natl Univ Ireland, Digital Enterprise Res Inst, Galway, Ireland. [Samwald, Matthias] Konrad Lorenz Inst Evolut & Cognit Res, Altenberg, Austria. [van Iersel, Martijn] Maastricht Univ, Dept Bioinformat, Maastricht, Netherlands. [Wimalaratne, Sarala] Univ Auckland, Auckland 1, New Zealand. [Allen, Keith; Leonard, Julie] Syngenta Biotech Inc, Res Triangle Pk, NC USA. [Whirl-Carrillo, Michelle; Gong, Li; Tang, Rebecca; Whaley, Ryan] Stanford Univ, Dept Genet, Stanford, CA 94305 USA. [Cheung, Kei-Hoi] Yale Univ, Yale Ctr Med Informat, New Haven, CT USA. [Dahlquist, Kam] Loyola Marymount Univ, Los Angeles, CA 90045 USA. [Finney, Andrew] Physiomics PLC, Magdalen Ctr, Oxford, England. [Gillespie, Marc] St Johns Univ, Jamaica, NY 11439 USA. [Honig, Michael] Columbia Univ, New York, NY USA. [Kane, David] SRA Int, Fairfax, VA USA. [Krupa, Shiva] Novartis Knowledge Ctr, Cambridge, MA USA. [Kutmon, Martina] Univ Ottawa, Ottawa, ON, Canada. [Marks, Debbie] Harvard Univ, Sch Med, Dept Syst Biol, Boston, MA USA. [Merberg, David] Vertex Pharmaceut, Cambridge, MA USA. [Petri, Victoria] Med Coll Wisconsin, Human & Mol Genet Ctr, Milwaukee, WI 53226 USA. [Pico, Alex] Gladstone Inst Cardiovasc Dis, San Francisco, CA USA. [Ravenscroft, Dean] Cornell Univ, Dept Genet & Plant Breeding, Ithaca, NY USA. [Shah, Nigam] Stanford Univ, Sch Med, Ctr Biomed Informat, Stanford, CA 94305 USA. [Letovksy, Stan] Millennium Pharmaceut Inc, Computat Sci Informat, Cambridge, MA USA. [Buetow, Kenneth H.] NCI, Ctr Biomed Informat & Informat Technol, Bethesda, MD 20892 USA. [Rzhetsky, Andrey] Univ Chicago, Inst Genom & Syst Biol, Chicago, IL 60637 USA. [Rzhetsky, Andrey] Argonne Natl Lab, Chicago, IL USA. [Schachter, Vincent] Total Gas & Power, Paris, France. [Goto, Susumu] Kyoto Univ, Inst Chem Res, Bioinformat Ctr, Kyoto 606, Japan. [Hucka, Michael] CALTECH, Biol Network Modeling Ctr, Pasadena, CA 91125 USA. [Wingender, Edgar] Dept Bioinformat, Gottingen, Germany. RP Bader, GD (reprint author), Univ Toronto, Banting & Best Dept Med Res, Donnelly Ctr Cellular & Biomol Res, Toronto, ON, Canada. EM biopax-paper@biopax.org RI Haw, Robin/D-1393-2009; sander, chris/H-1452-2011; Hucka, Michael/B-1896-2012; rzhetsky, andrey/B-6118-2012; van Iersel, Martijn/E-9105-2010; Syed, Mustafa/A-5252-2011; Pandey, Akhilesh/B-4127-2009; Vastrik, Imre/C-2690-2009; Zucker, Jeremy/M-3643-2016; Bader, Gary/C-1176-2009; Le Novere, Nicolas/F-9973-2010; OI D'Eustachio, Peter/0000-0002-5494-626X; Wingender, Edgar/0000-0002-7729-8453; Pico, Alexander/0000-0001-5706-2163; Gillespie, Marc/0000-0002-5766-1702; Haw, Robin/0000-0002-2013-7835; Kutmon, Martina/0000-0002-7699-8191; Wimalaratne, Sarala/0000-0002-5355-2576; Karp, Peter/0000-0002-5876-6418; van Iersel, Martijn/0000-0002-5877-4338; Pandey, Akhilesh/0000-0001-9943-6127; Zucker, Jeremy/0000-0002-7276-9009; Murray-Rust, Peter/0000-0003-3386-3972; McWeeney, Shannon/0000-0001-8333-6607; BABUR, OZGUN/0000-0002-0239-5259; Bader, Gary/0000-0003-0185-8861; Le Novere, Nicolas/0000-0002-6309-7327; Demir, Emek/0000-0002-3663-7113; Birney, Ewan/0000-0001-8314-8497; Fukuda, Ken/0000-0001-7366-1094 FU US Department of Energy [DE-FG02-04ER63931]; caBIG program; US National Institute of General Medical Sciences workshop [1R13GM076939, P41HG004118]; US National Human Genome Research Institute and Genome Canada through the Ontario Genomics Institute [2007-OGI-TD-05]; US National Institutes of Health [R01GM071962-07] FX Funded by the US Department of Energy workshop grant DE-FG02-04ER63931, the caBIG program, the US National Institute of General Medical Sciences workshop grant 1R13GM076939, grant P41HG004118 from the US National Human Genome Research Institute and Genome Canada through the Ontario Genomics Institute (2007-OGI-TD-05) and US National Institutes of Health grant R01GM071962-07. Thanks to many people who contributed to discussions on BioPAX mailing lists, at conferences and at BioPAX workshops, especially A. Ruttenberg and J. Rees. NR 65 TC 251 Z9 253 U1 6 U2 28 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA SN 1087-0156 J9 NAT BIOTECHNOL JI Nat. Biotechnol. PD SEP PY 2010 VL 28 IS 9 BP 935 EP 942 DI 10.1038/nbt.1666 PG 8 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 648UF UT WOS:000281719100019 PM 20829833 ER PT J AU Ohm, RA de Jong, JF Lugones, LG Aerts, A Kothe, E Stajich, JE de Vries, RP Record, E Levasseur, A Baker, SE Bartholomew, KA Coutinho, PM Erdmann, S Fowler, TJ Gathman, AC Lombard, V Henrissat, B Knabe, N Kues, U Lilly, WW Lindquist, E Lucas, S Magnuson, JK Piumi, F Raudaskoski, M Salamov, A Schmutz, J Schwarze, FWMR vanKuyk, PA Horton, JS Grigoriev, IV Wosten, HAB AF Ohm, Robin A. de Jong, Jan F. Lugones, Luis G. Aerts, Andrea Kothe, Erika Stajich, Jason E. de Vries, Ronald P. Record, Eric Levasseur, Anthony Baker, Scott E. Bartholomew, Kirk A. Coutinho, Pedro M. Erdmann, Susann Fowler, Thomas J. Gathman, Allen C. Lombard, Vincent Henrissat, Bernard Knabe, Nicole Kuees, Ursula Lilly, Walt W. Lindquist, Erika Lucas, Susan Magnuson, Jon K. Piumi, Francois Raudaskoski, Marjatta Salamov, Asaf Schmutz, Jeremy Schwarze, Francis W. M. R. vanKuyk, Patricia A. Horton, J. Stephen Grigoriev, Igor V. Wosten, Han A. B. TI Genome sequence of the model mushroom Schizophyllum commune SO NATURE BIOTECHNOLOGY LA English DT Article ID EUKARYOTIC GENOMES; NEUROSPORA-CRASSA; CLASSIFICATION; ANNOTATION; INSIGHTS; FUNGI; RECOGNITION; CHROMOSOMES; ANTISENSE; SOFTWARE AB Much remains to be learned about the biology of mushroom-forming fungi, which are an important source of food, secondary metabolites and industrial enzymes. The wood-degrading fungus Schizophyllum commune is both a genetically tractable model for studying mushroom development and a likely source of enzymes capable of efficient degradation of lignocellulosic biomass. Comparative analyses of its 38.5-megabase genome, which encodes 13,210 predicted genes, reveal the species's unique wood-degrading machinery. One-third of the 471 genes predicted to encode transcription factors are differentially expressed during sexual development of S. commune. Whereas inactivation of one of these, fst4, prevented mushroom formation, inactivation of another, fst3, resulted in more, albeit smaller, mushrooms than in the wild-type fungus. Antisense transcripts may also have a role in the formation of fruiting bodies. Better insight into the mechanisms underlying mushroom formation should affect commercial production of mushrooms and their industrial use for producing enzymes and pharmaceuticals. C1 [Horton, J. Stephen] Union Coll, Dept Biol Sci, Schenectady, NY 12308 USA. [Ohm, Robin A.; de Jong, Jan F.; Lugones, Luis G.; de Vries, Ronald P.; Wosten, Han A. B.] Univ Utrecht, Dept Microbiol, Utrecht, Netherlands. [Ohm, Robin A.; de Jong, Jan F.; Lugones, Luis G.; de Vries, Ronald P.; Wosten, Han A. B.] Univ Utrecht, Kluyver Ctr Genom Ind Fermentat, Utrecht, Netherlands. [Aerts, Andrea; Baker, Scott E.; Lindquist, Erika; Lucas, Susan; Salamov, Asaf; Schmutz, Jeremy; Grigoriev, Igor V.] Joint Genome Inst, Dept Energy, Walnut Creek, CA USA. [Kothe, Erika; Erdmann, Susann; Knabe, Nicole] Univ Jena, Dept Microbiol, Jena, Germany. [Stajich, Jason E.] Univ Calif Riverside, Dept Plant Pathol & Microbiol, Riverside, CA 92521 USA. [de Vries, Ronald P.] CBS KNAW Fungal Biodivers Ctr, Utrecht, Netherlands. [Record, Eric; Levasseur, Anthony; Piumi, Francois] INRA, Biotechnol Champignons Filamenteux, Marseille, France. [Record, Eric; Levasseur, Anthony; Piumi, Francois] Univ Aix Marseille 1, Marseille, France. [Record, Eric; Levasseur, Anthony; Piumi, Francois] Univ Aix Marseille 2, F-13284 Marseille 07, France. [Baker, Scott E.; Magnuson, Jon K.] Pacific NW Natl Lab, Chem & Biol Proc Dev Grp, Richland, WA 99352 USA. [Bartholomew, Kirk A.] Sacred Heart Univ, Dept Biol, Fairfield, CT USA. [Coutinho, Pedro M.; Lombard, Vincent; Henrissat, Bernard] Univ Aix Marseille I & II, Marseille, France. [Fowler, Thomas J.] So Illinois Univ, Dept Biol Sci, Edwardsville, IL 62026 USA. [Gathman, Allen C.; Lilly, Walt W.] SW Missouri State Univ, Dept Biol, Cape Girardeau, MO USA. [Kuees, Ursula] Univ Gottingen, Div Mol Wood Biotechnol & Tech Mycol, Busgen Inst, Gottingen, Germany. [Raudaskoski, Marjatta] Univ Turku, Dept Biochem & Food Chem, Turku, Finland. [Schwarze, Francis W. M. R.] Empa, Swiss Fed Labs Mat Testing & Res, Wood Protect & Biotechnol, St Gallen, Switzerland. [vanKuyk, Patricia A.] Leiden Univ, Inst Biol, Leiden, Netherlands. RP Horton, JS (reprint author), Union Coll, Dept Biol Sci, Schenectady, NY 12308 USA. EM hortons@union.edu; IVGrigoriev@lbl.gov; h.a.b.wosten@uu.nl RI Stajich, Jason/C-7297-2008; Henrissat, Bernard/J-2475-2012; Schmutz, Jeremy/N-3173-2013; de Vries, Ronald/F-8125-2011; Ohm, Robin/I-6689-2016; Lugones, Luis/J-6065-2016; OI Stajich, Jason/0000-0002-7591-0020; Schmutz, Jeremy/0000-0001-8062-9172; de Vries, Ronald/0000-0002-4363-1123; Lugones, Luis/0000-0002-5259-3739; Kues, Ursula/0000-0001-9180-4079 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; Dutch Technology Foundation; Applied Science division of the Netherlands Organization for Scientific Research; Dutch Ministry of Economic Affairs FX This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program and the University of California, Lawrence Berkeley National Laboratory under contract no. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under contract no. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract no. DE-AC02-06NA25396. The work was also supported by the Dutch Technology Foundation STW, the Applied Science division of the Netherlands Organization for Scientific Research and the Technology Program of the Dutch Ministry of Economic Affairs. NR 49 TC 158 Z9 182 U1 7 U2 71 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA SN 1087-0156 EI 1546-1696 J9 NAT BIOTECHNOL JI Nat. Biotechnol. PD SEP PY 2010 VL 28 IS 9 BP 957 EP U10 DI 10.1038/nbt.1643 PG 9 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 648UF UT WOS:000281719100022 PM 20622885 ER PT J AU Henry, CS DeJongh, M Best, AA Frybarger, PM Linsay, B Stevens, RL AF Henry, Christopher S. DeJongh, Matthew Best, Aaron A. Frybarger, Paul M. Linsay, Ben Stevens, Rick L. TI High-throughput generation, optimization and analysis of genome-scale metabolic models SO NATURE BIOTECHNOLOGY LA English DT Article ID GENE ESSENTIALITY DATA; ESCHERICHIA-COLI; BACILLUS-SUBTILIS; RECONSTRUCTION; NETWORKS; ANNOTATION; SEED; PHENOTYPE; BACTERIA; DATABASE AB Genome-scale metabolic models have proven to be valuable for predicting organism phenotypes from genotypes. Yet efforts to develop new models are failing to keep pace with genome sequencing. To address this problem, we introduce the Model SEED, a web-based resource for high-throughput generation, optimization and analysis of genome-scale metabolic models. The Model SEED integrates existing methods and introduces techniques to automate nearly every step of this process, taking similar to 48 h to reconstruct a metabolic model from an assembled genome sequence. We apply this resource to generate 130 genome-scale metabolic models representing a taxonomically diverse set of bacteria. Twenty-two of the models were validated against available gene essentiality and Biolog data, with the average model accuracy determined to be 66% before optimization and 87% after optimization. C1 [Henry, Christopher S.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. [DeJongh, Matthew; Frybarger, Paul M.] Hope Coll, Dept Comp Sci, Holland, MI 49423 USA. [Best, Aaron A.; Frybarger, Paul M.] Hope Coll, Dept Biol, Holland, MI 49423 USA. [Linsay, Ben; Stevens, Rick L.] Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. [Linsay, Ben; Stevens, Rick L.] Univ Chicago, Computat Inst, Chicago, IL 60637 USA. [Stevens, Rick L.] Argonne Natl Lab, Comp Environm & Life Sci Directorate, Argonne, IL 60439 USA. RP Henry, CS (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM chenry@mcs.anl.gov FU US Department of Energy [DE-ACO2-06CH11357]; National Institute of Allergy and Infectious Diseases [HHSN266200400042C]; National Science Foundation [MCB-0745100, CCF-0829929, DBI-0850546]; Argonne National Laboratory Guest Faculty; United States Fulbright Scholarship Program FX This work was supported by the US Department of Energy under contract DE-ACO2-06CH11357, by the National Institute of Allergy and Infectious Diseases under contract HHSN266200400042C and by the National Science Foundation under grants MCB-0745100, CCF-0829929 and DBI-0850546. M.D. was also supported by the Argonne National Laboratory Guest Faculty Program and the United States Fulbright Scholarship Program. We acknowledge the SEED annotators and development team for producing the annotations and computational infrastructure that make this work possible. We thank R. Overbeek, V. Vonstein, R. Olson, T. Disz, S. Devoid, F. Xia and T. Paczian for assistance with the use of the SEED genome annotation and analysis tools. NR 39 TC 319 Z9 326 U1 6 U2 83 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA SN 1087-0156 J9 NAT BIOTECHNOL JI Nat. Biotechnol. PD SEP PY 2010 VL 28 IS 9 BP 977 EP U22 DI 10.1038/nbt.1672 PG 8 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 648UF UT WOS:000281719100025 PM 20802497 ER PT J AU Kim, AM Vogt, S O'Halloran, TV Woodruff, TK AF Kim, Alison M. Vogt, Stefan O'Halloran, Thomas V. Woodruff, Teresa K. TI Zinc availability regulates exit from meiosis in maturing mammalian oocytes SO NATURE CHEMICAL BIOLOGY LA English DT Article ID XENOPUS-LAEVIS OOCYTES; MOUSE OOCYTES; CYTOPLASMIC MATURATION; MEIOTIC MATURATION; GENE-EXPRESSION; EGG ACTIVATION; CELL; TRANSITION; EMBRYOS; HOMEOSTASIS AB Cellular metal ion fluxes are known in alkali and alkaline earth metals but are not well documented in transition metals. Here we describe major changes in the zinc physiology of the mammalian oocyte as it matures and initiates embryonic development. Single-cell elemental analysis of mouse oocytes by synchrotron-based X-ray fluorescence microscopy (XFM) revealed a 50% increase in total zinc content within the 12-14-h period of meiotic maturation. Perturbation of zinc homeostasis with a cell-permeable small-molecule chelator blocked meiotic progression past telophase I. Zinc supplementation rescued this phenotype when administered before this meiotic block. However, after telophase arrest, zinc triggered parthenogenesis, suggesting that exit from this meiotic step is tightly regulated by the availability of a zinc-dependent signal. These results implicate the zinc bolus acquired during meiotic maturation as an important part of the maternal legacy to the embryo. C1 [Kim, Alison M.; Woodruff, Teresa K.] Northwestern Univ, Feinberg Sch Med, Dept Obstet & Gynecol, Chicago, IL 60611 USA. [Kim, Alison M.; O'Halloran, Thomas V.] Northwestern Univ, Chem Life Proc Inst, Evanston, IL USA. [Vogt, Stefan] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. [O'Halloran, Thomas V.; Woodruff, Teresa K.] Northwestern Univ, Dept Biochem Mol Biol & Cell Biol, Evanston, IL USA. [O'Halloran, Thomas V.] Northwestern Univ, Dept Chem, Evanston, IL USA. RP Kim, AM (reprint author), Northwestern Univ, Feinberg Sch Med, Dept Obstet & Gynecol, Chicago, IL 60611 USA. EM t-ohalloran@northwestern.edu; tkw@northwestern.edu RI Kim, Alison/D-6969-2014; Vogt, Stefan/B-9547-2009; Vogt, Stefan/J-7937-2013 OI Kim, Alison/0000-0001-5845-1865; Vogt, Stefan/0000-0002-8034-5513; Vogt, Stefan/0000-0002-8034-5513 FU US National Institutes of Health [P01 HD021921, GM38784]; W.M. Keck Foundation; Chicago Biomedical Consortium Spark Award; Office of Basic Energy Sciences in the Office of Science of the US Department of Energy [DE-AC02-06CH11357]; [HD007068] FX The authors gratefully acknowledge J. Jozefik, S. Kiesewetter and D. Mackovic for animal care and concerns. We would also like to thank the P01 Histology Core (T. Wellington, director), the Analytical Services Laboratory and the Quantitative Bioelement Imaging Center in the Chemistry of Life Processes Institute at Northwestern University for reagents and discussions regarding sample processing. This work is supported by US National Institutes of Health grants P01 HD021921 and GM38784, the W.M. Keck Foundation Medical Research Award and the Chicago Biomedical Consortium Spark Award. A.M.K. was a fellow of the Reproductive Biology Training Grant HD007068. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the Office of Basic Energy Sciences in the Office of Science of the US Department of Energy, under contract no. DE-AC02-06CH11357. NR 44 TC 95 Z9 95 U1 1 U2 17 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA SN 1552-4450 J9 NAT CHEM BIOL JI Nat. Chem. Biol. PD SEP PY 2010 VL 6 IS 9 BP 674 EP 681 DI 10.1038/NCHEMBIO.419 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 640WO UT WOS:000281084900011 PM 20693991 ER PT J AU Thomson, RK Cantat, T Scott, BL Morris, DE Batista, ER Kiplinger, JL AF Thomson, Robert K. Cantat, Thibault Scott, Brian L. Morris, David E. Batista, Enrique R. Kiplinger, Jaqueline L. TI Uranium azide photolysis results in C-H bond activation and provides evidence for a terminal uranium nitride SO NATURE CHEMISTRY LA English DT Article ID VALENT ORGANOURANIUM COMPLEXES; BETA-HYDRIDE ELIMINATION; PHOTOCHEMICAL-SYNTHESIS; ACTINYL IONS; IRON; REDUCTION; MECHANISM; URANYL AB Uranium nitride [U=N](x) is an alternative nuclear fuel that has great potential in the expanding future of nuclear power; however, very little is known about the U=N functionality. We show, for the first time, that a terminal uranium nitride complex can be generated by photolysis of an azide (U-N=N=N) precursor. The transient U=N fragment is reactive and undergoes insertion into a ligand C-H bond to generate new N-H and N-C bonds. The mechanism of this unprecedented reaction has been evaluated through computational and spectroscopic studies, which reveal that the photochemical azide activation pathway can be shut down through coordination of the terminal azide ligand to the Lewis acid B(C(6)F(5))(3). These studies demonstrate that photochemistry can be a powerful tool for inducing redox transformations for organometallic actinide complexes, and that the terminal uranium nitride fragment is reactive, cleaving strong C-H bonds. C1 [Thomson, Robert K.; Cantat, Thibault; Scott, Brian L.; Morris, David E.; Batista, Enrique R.; Kiplinger, Jaqueline L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Thomson, RK (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM erb@lanl.gov; kiplinger@lanl.gov RI Cantat, Thibault/A-8167-2010; Morris, David/A-8577-2012; Kiplinger, Jaqueline/B-9158-2011; Scott, Brian/D-8995-2017 OI Cantat, Thibault/0000-0001-5265-8179; Kiplinger, Jaqueline/0000-0003-0512-7062; Scott, Brian/0000-0003-0468-5396 FU Seaborg Institute for Transactinium Science; LANL; Division of Chemical Sciences, Office of Basic Energy Science; LANL Laboratory Directed Research and Development (LDRD) FX The authors thank the Los Alamos National Laboratory (LANL) G. T. Seaborg Institute for Transactinium Science for a postdoctoral fellowship to R. K. T., LANL for a Director's postdoctoral fellowship to T. C., and the Division of Chemical Sciences, Office of Basic Energy Science, Heavy Element Chemistry program and the LANL Laboratory Directed Research and Development (LDRD) program for funding. R. M. Chamberlin and D. L. Clark (both LANL) are thanked for helpful discussions. NR 33 TC 96 Z9 96 U1 5 U2 67 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1755-4330 J9 NAT CHEM JI Nat. Chem. PD SEP PY 2010 VL 2 IS 9 BP 723 EP 729 DI 10.1038/nchem.705 PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA 642CF UT WOS:000281180200010 PM 20729890 ER PT J AU Garcia-Barriocanal, J Cezar, JC Bruno, FY Thakur, P Brookes, NB Utfeld, C Rivera-Calzada, A Giblin, SR Taylor, JW Duffy, JA Dugdale, SB Nakamura, T Kodama, K Leon, C Okamoto, S Santamaria, J AF Garcia-Barriocanal, J. Cezar, J. C. Bruno, F. Y. Thakur, P. Brookes, N. B. Utfeld, C. Rivera-Calzada, A. Giblin, S. R. Taylor, J. W. Duffy, J. A. Dugdale, S. B. Nakamura, T. Kodama, K. Leon, C. Okamoto, S. Santamaria, J. TI Spin and orbital Ti magnetism at LaMnO3/SrTiO3 interfaces SO NATURE COMMUNICATIONS LA English DT Article ID TRANSITION-METAL OXIDES; RECONSTRUCTION; INSULATOR; LAMNO3; STATE AB In systems with strong electron-lattice coupling, such as manganites, orbital degeneracy is lifted, causing a null expectation value of the orbital magnetic moment. Magnetic structure is thus determined by spin-spin superexchange. In titanates, however, with much smaller Jahn-Teller distortions, orbital degeneracy might allow non-zero values of the orbital magnetic moment, and novel forms of ferromagnetic superexchange interaction unique to t(2g) electron systems have been theoretically predicted, although their experimental observation has remained elusive. In this paper, we report a new kind of Ti3+ ferromagnetism at LaMnO3/SrTiO3 epitaxial interfaces. It results from charge transfer to the empty conduction band of the titanate and has spin and orbital contributions evidencing the role of orbital degeneracy. The possibility of tuning magnetic alignment (ferromagnetic or antiferromagnetic) of Ti and Mn moments by structural parameters is demonstrated. This result will provide important clues for understanding the effects of orbital degeneracy in superexchange coupling. C1 [Garcia-Barriocanal, J.; Bruno, F. Y.; Rivera-Calzada, A.; Leon, C.; Santamaria, J.] Univ Complutense Madrid, GFMC Dpto Fis Aplicada 3, E-28040 Madrid, Spain. [Garcia-Barriocanal, J.] ESRF, SpLine Spanish CRG Beamline, F-38043 Grenoble, France. [Cezar, J. C.; Thakur, P.; Brookes, N. B.] European Synchrotron Radiat Facil, F-38043 Grenoble, France. [Utfeld, C.; Dugdale, S. B.] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. [Giblin, S. R.; Taylor, J. W.] Rutherford Appleton Lab, ISIS Facil, Chilton OX11 0QX, Oxon, England. [Duffy, J. A.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Nakamura, T.; Kodama, K.] SPring 8, Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan. [Okamoto, S.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. RP Santamaria, J (reprint author), Univ Complutense Madrid, GFMC Dpto Fis Aplicada 3, Campus Moncloa, E-28040 Madrid, Spain. EM jacsan@fis.ucm.es RI Leon, Carlos/A-5587-2008; Criginski Cezar, Julio/B-2731-2008; Bruno, Flavio/C-7380-2008; Dugdale, Stephen/F-4066-2011; Okamoto, Satoshi/G-5390-2011; Thakur, Pardeep Kumar/A-8328-2012; Criginski Cezar, Julio/D-5039-2012; Santamaria, Jacobo/N-8783-2016 OI Leon, Carlos/0000-0002-3262-1843; Bruno, Flavio/0000-0002-3970-8837; Dugdale, Stephen/0000-0002-2738-2235; Okamoto, Satoshi/0000-0002-0493-7568; Thakur, Pardeep Kumar/0000-0002-9599-0531; Criginski Cezar, Julio/0000-0002-7904-6874; Santamaria, Jacobo/0000-0003-4594-2686 FU Spanish Ministry of Science and Innovation (MICINN); Spanish MICINN [MAT 2008 06517, CSD2009-00013, CAM S2009-MAT 1756]; Materials Sciences and Engineering Division, Office of Basic Energy Sciences, U.S. Department of Energy; UK EPSRC [EP/F062729, EP/G056463/1] FX We thank Andrew Millis and Giniyat Khaliullin for stimulating discussions. J.G.-B. thanks the Spanish Ministry of Science and Innovation (MICINN) for financial support through the Specialization in International Organizations fellowship. This work was supported by Spanish MICINN Grant MAT 2008 06517, Consolider Ingenio CSD2009-00013 (IMAGINE), CAM S2009-MAT 1756 (PHAMA). Work at ORNL was supported by the Materials Sciences and Engineering Division, Office of Basic Energy Sciences, U.S. Department of Energy. Some XMCD experiments were conducted with the approval of JASRI (proposal no. 2007B1516) and supported by UK EPSRC Grants EP/F062729 and EP/G056463/1. NR 31 TC 69 Z9 69 U1 6 U2 83 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 SEP PY 2010 VL 1 AR 82 DI 10.1038/ncomms1080 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 673GE UT WOS:000283646500021 PM 20865798 ER PT J AU Blow, MJ McCulley, DJ Li, ZR Zhang, T Akiyama, JA Holt, A Plajzer-Frick, I Shoukry, M Wright, C Chen, F Afzal, V Bristow, J Ren, B Black, BL Rubin, EM Visel, A Pennacchio, LA AF Blow, Matthew J. McCulley, David J. Li, Zirong Zhang, Tao Akiyama, Jennifer A. Holt, Amy Plajzer-Frick, Ingrid Shoukry, Malak Wright, Crystal Chen, Feng Afzal, Veena Bristow, James Ren, Bing Black, Brian L. Rubin, Edward M. Visel, Axel Pennacchio, Len A. TI ChIP-Seq identification of weakly conserved heart enhancers SO NATURE GENETICS LA English DT Article ID CIS-REGULATORY ELEMENTS; EMBRYONIC STEM-CELLS; HUMAN GENOME; NONCODING SEQUENCES; GENE-EXPRESSION; DISEASE; DATABASE; MECHANISMS; VERTEBRATE; CONSTRAINT AB Accurate control of tissue-specific gene expression plays a pivotal role in heart development, but few cardiac transcriptional enhancers have thus far been identified. Extreme noncoding-sequence conservation has successfully predicted enhancers that are active in many tissues but has failed to identify substantial numbers of heart-specific enhancers. Here, we used ChIP-Seq with the enhancer-associated protein p300 from mouse embryonic day 11.5 heart tissue to identify over 3,000 candidate heart enhancers genome wide. Compared to enhancers active in other tissues we studied at this time point, most candidate heart enhancers were less deeply conserved in vertebrate evolution. Nevertheless, transgenic mouse assays of 130 candidate regions revealed that most function reproducibly as enhancers active in the heart, irrespective of their degree of evolutionary constraint. These results provide evidence for a large population of poorly conserved heart enhancers and suggest that the evolutionary conservation of embryonic enhancers can vary depending on tissue type. C1 [Blow, Matthew J.; Akiyama, Jennifer A.; Holt, Amy; Plajzer-Frick, Ingrid; Shoukry, Malak; Afzal, Veena; Rubin, Edward M.; Visel, Axel; Pennacchio, Len A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA. [Blow, Matthew J.; Zhang, Tao; Wright, Crystal; Chen, Feng; Bristow, James; Rubin, Edward M.; Visel, Axel; Pennacchio, Len A.] Energy Joint Genome Inst, US Dept, Walnut Creek, CA USA. [McCulley, David J.; Black, Brian L.] Univ Calif San Francisco, Inst Cardiovasc Res, San Francisco, CA 94143 USA. [McCulley, David J.; Black, Brian L.] Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94143 USA. [Li, Zirong; Ren, Bing] Univ Calif San Diego, Sch Med, Ludwig Inst Canc Res, La Jolla, CA 92093 USA. RP Visel, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA. EM avisel@lbl.gov; lapennacchio@lbl.gov RI Visel, Axel/A-9398-2009; Max, Mad/E-5238-2010; Phelps, Steve/H-2263-2011; Blow, Matthew/G-6369-2012; OI Visel, Axel/0000-0002-4130-7784; Max, Mad/0000-0001-6966-6829; Blow, Matthew/0000-0002-8844-9149; Black, Brian/0000-0002-6664-8913 FU National Heart, Lung, and Blood Institute [HL066681, HL64658, HL89707]; National Human Genome Research Institute [HG003988]; Ludwig Institute for Cancer Research; Department of Energy, University of California [DE-AC02-05CH11231] FX The authors wish to thank R. Hosseini and S. Phouanenavong for technical support. L. A. P. and E. M. R. were supported by grant HL066681, Berkeley Program for Genomic Applications, which is funded by the National Heart, Lung, and Blood Institute. L. A. P. was also supported by grant HG003988, which is funded by the National Human Genome Research Institute. B. L. B was supported by grants HL64658 and HL89707 from the National Heart, Lung, and Blood Institute. B. R. is supported by funding from the National Human Genome Research Institute and the Ludwig Institute for Cancer Research. Research was conducted at the E.O. Lawrence Berkeley National Laboratory and was performed under the Department of Energy Contract DE-AC02-05CH11231, University of California. NR 45 TC 249 Z9 253 U1 5 U2 25 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA SN 1061-4036 J9 NAT GENET JI Nature Genet. PD SEP PY 2010 VL 42 IS 9 BP 806 EP U107 DI 10.1038/ng.650 PG 7 WC Genetics & Heredity SC Genetics & Heredity GA 644OM UT WOS:000281388400020 PM 20729851 ER PT J AU Cox, S Singleton, J McDonald, RD Migliori, A Littlewood, PB AF Cox, Susan Singleton, J. McDonald, R. D. Migliori, A. Littlewood, P. B. TI Sliding charge-density waves in manganites Reply SO NATURE MATERIALS LA English DT Letter C1 [Cox, Susan; Singleton, J.; McDonald, R. D.; Migliori, A.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. [Littlewood, P. B.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England. RP Cox, S (reprint author), Kings Coll London, Randall Div Cell & Mol Biophys, London SE1 1UL, England. EM susan.cox@kcl.ac.uk RI Littlewood, Peter/B-7746-2008; McDonald, Ross/H-3783-2013; OI McDonald, Ross/0000-0002-0188-1087; Mcdonald, Ross/0000-0002-5819-4739 NR 2 TC 0 Z9 0 U1 0 U2 12 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1476-1122 J9 NAT MATER JI Nat. Mater. PD SEP PY 2010 VL 9 IS 9 BP 689 EP 689 DI 10.1038/nmat2842 PG 1 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA 642BP UT WOS:000281178400003 ER PT J AU Liu, TJ Hu, J Qian, B Fobes, D Mao, ZQ Bao, W Reehuis, M Kimber, SAJ Prokes, K Matas, S Argyriou, DN Hiess, A Rotaru, A Pham, H Spinu, L Qiu, Y Thampy, V Savici, AT Rodriguez, JA Broholm, C AF Liu, T. J. Hu, J. Qian, B. Fobes, D. Mao, Z. Q. Bao, W. Reehuis, M. Kimber, S. A. J. Prokes, K. Matas, S. Argyriou, D. N. Hiess, A. Rotaru, A. Pham, H. Spinu, L. Qiu, Y. Thampy, V. Savici, A. T. Rodriguez, J. A. Broholm, C. TI From (pi,0) magnetic order to superconductivity with (pi,pi) magnetic resonance in Fe1.02Te1-xSex SO NATURE MATERIALS LA English DT Article ID PHASE-DIAGRAM; LAO1-XFXFEAS; COEXISTENCE AB The iron chalcogenide Fe1+y(Te1-xSex) is structurally the simplest of the Fe-based superconductors(1-3). Although the Fermi surface is similar to iron pnictides(4,5), the parent compound Fe1+y Te exhibits antiferromagnetic order with an in-plane magnetic wave vector (pi,0) (ref. 6). This contrasts the pnictide parent compounds where the magnetic order has an in-plane magnetic wave vector (pi,pi) that connects hole and electron parts of the Fermi surface(7,8). Despite these differences, both the pnictide and chalcogenide Fe superconductors exhibit a superconducting spin resonance around (pi,pi) (refs 9-11). A central question in this burgeoning field is therefore how(pi,pi) superconductivity can emerge from a (pi,0) magnetic instability(12). Here, we report that the magnetic soft mode evolving from the (pi,0)-type magnetic long-range order is associated with weak charge carrier localization. Bulk superconductivity occurs as magnetic correlations at (pi,0) are suppressed and the mode at (pi,pi) becomes dominant for x > 0.29. Our results suggest a common magnetic origin for superconductivity in iron chalcogenide and pnictide superconductors. C1 [Liu, T. J.; Hu, J.; Qian, B.; Fobes, D.; Mao, Z. Q.] Tulane Univ, Dept Phys & Engn Phys, New Orleans, LA 70118 USA. [Bao, W.] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China. [Reehuis, M.; Kimber, S. A. J.; Prokes, K.; Matas, S.; Argyriou, D. N.] Helmholtz Zentrum Berlin Mat & Energie, D-14109 Berlin, Germany. [Hiess, A.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France. [Rotaru, A.; Pham, H.; Spinu, L.] Univ New Orleans, Adv Mat Res Inst, New Orleans, LA 70148 USA. [Rotaru, A.; Pham, H.; Spinu, L.] Univ New Orleans, Dept Phys, New Orleans, LA 70148 USA. [Qiu, Y.; Rodriguez, J. A.; Broholm, C.] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA. [Qiu, Y.; Rodriguez, J. A.] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20899 USA. [Thampy, V.; Savici, A. T.; Rodriguez, J. A.; Broholm, C.] Johns Hopkins Univ, Inst Quantum Matter, Baltimore, MD 21218 USA. [Thampy, V.; Savici, A. T.; Rodriguez, J. A.; Broholm, C.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Savici, A. T.] NSSD, Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Mao, ZQ (reprint author), Tulane Univ, Dept Phys & Engn Phys, New Orleans, LA 70118 USA. EM zmao@tulane.edu; wbao@ruc.edu.cn RI Hu, Jin/C-4141-2014; Rotaru, Aurelian/C-2871-2011; Broholm, Collin/E-8228-2011; Bao, Wei/E-9988-2011; 石, 源/D-5929-2012; ruc, phy/E-4170-2012; LIU, TIJIANG/A-3242-2013; Rodriguez-Rivera, Jose/A-4872-2013; Savici, Andrei/F-2790-2013; Prokes, Karel/J-5438-2013; Reehuis, Manfred/J-3383-2013; Fobes, David/E-8526-2014; OI Hu, Jin/0000-0003-0080-4239; Rotaru, Aurelian/0000-0002-8782-7988; Broholm, Collin/0000-0002-1569-9892; Bao, Wei/0000-0002-2105-461X; Rodriguez-Rivera, Jose/0000-0002-8633-8314; Savici, Andrei/0000-0001-5127-8967; Prokes, Karel/0000-0002-7034-1738; Reehuis, Manfred/0000-0002-6461-4074; Fobes, David/0000-0001-8252-2061; Kimber, Simon/0000-0003-0489-1851 FU NSF [DMR-0645305, DMR-0454672]; DOE [DE-FG02-07ER46358, DE-FG02-08ER46544]; DARPA [HR 0011-09-1-0047]; Deutsche Forschungsgemeinschaft [SPP 1458, AR 613/1-2] FX The work at Tulane is supported by the NSF under grant DMR-0645305 for materials and equipment, and the DOE under DE-FG02-07ER46358 for personnel. Work at AMRI was supported by DARPA through grant HR 0011-09-1-0047. Work at NIST is in part supported by the NSF under grant DMR-0454672. Work at the Johns Hopkins University Institute for Quantum Matter is supported by the DOE under grant DE-FG02-08ER46544. D.N.A. and K.P. acknowledge the Deutsche Forschungsgemeinschaft for support under the priority program SPP 1458 and contract AR 613/1-2. NR 31 TC 171 Z9 173 U1 4 U2 66 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1476-1122 J9 NAT MATER JI Nat. Mater. PD SEP PY 2010 VL 9 IS 9 BP 716 EP 720 DI 10.1038/NMAT2800 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA 642BP UT WOS:000281178400020 PM 20639892 ER PT J AU Wu, SM Cybart, SA Yu, P Rossell, MD Zhang, JX Ramesh, R Dynes, RC AF Wu, S. M. Cybart, Shane A. Yu, P. Rossell, M. D. Zhang, J. X. Ramesh, R. Dynes, R. C. TI Reversible electric control of exchange bias in a multiferroic field-effect device SO NATURE MATERIALS LA English DT Article ID MAGNETIC FERROELECTRICS; BIFEO3 FILMS; THIN-FILMS; OXIDES; INTERFACE; MODULATION; GAS AB Electric-field control of magnetization has many potential applications in magnetic memory storage, sensors and spintronics. One approach to obtain this control is through multiferroic materials. Instead of using direct coupling between ferroelectric and ferromagnetic order parameters in a single-phase multiferroic material, which only shows a weak magnetoelectric effect, a unique method using indirect coupling through an intermediate antiferromagnetic order parameter can be used. In this article, we demonstrate electrical control of exchange bias using a field-effect device employing multiferroic (ferroelectric/antiferromagnetic) BiFeO(3) as the dielectric and ferromagnetic La(0.7)Sr(0.3)MnO(3) as the conducting channel; we can reversibly switch between two distinct exchange-bias states by switching the ferroelectric polarization of BiFeO3. This is an important step towards controlling magnetization with electric fields, which may enable a new class of electrically controllable spintronic devices and provide a new basis for producing electrically controllable spin-polarized currents. C1 [Wu, S. M.; Cybart, Shane A.; Yu, P.; Rossell, M. D.; Zhang, J. X.; Ramesh, R.; Dynes, R. C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Wu, S. M.; Cybart, Shane A.; Yu, P.; Ramesh, R.; Dynes, R. C.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Dynes, R. C.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. RP Wu, SM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. EM stephenw@berkeley.edu RI Cybart, Shane/E-3518-2013; Yu, Pu/F-1594-2014; Rossell, Marta/E-9785-2017 FU US Department of Energy [DE-AC02-05CH11231]; AFOSR [FA9550-08-1-0305]; Western Institute of Nanoelectronics FX This work was supported by the US Department of Energy under contract no. DE-AC02-05CH11231. Fabrication and measurement equipment were supported by AFOSR grant No FA9550-08-1-0305. P.Y. is funded by a grant from a Western Institute of Nanoelectronics fellowship. The authors also thank J.S. Lee, D. A. Arena and C. C. Kao for X-ray magnetic circular dichroism measurements, L. W. Martin for discussions, Glenair Inc. for providing us with Nano Miniature connectors used in our experiment at 5 K, Y. P. Chen for circuit board layout and J. Clarke for use of his laboratory. NR 34 TC 308 Z9 313 U1 42 U2 367 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1476-1122 J9 NAT MATER JI Nat. Mater. PD SEP PY 2010 VL 9 IS 9 BP 756 EP 761 DI 10.1038/NMAT2803 PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA 642BP UT WOS:000281178400028 PM 20657590 ER PT J AU Kotz, KT Xiao, W Miller-Graziano, C Qian, WJ Russom, A Warner, EA Moldawer, LL De, A Bankey, PE Petritis, BO Camp, DG Rosenbach, AE Goverman, J Fagan, SP Brownstein, BH Irimia, D Xu, WH Wilhelmy, J Mindrinos, MN Smith, RD Davis, RW Tompkins, RG Toner, M AF Kotz, Kenneth T. Xiao, Wenzong Miller-Graziano, Carol Qian, Wei-Jun Russom, Aman Warner, Elizabeth A. Moldawer, Lyle L. De, Asit Bankey, Paul E. Petritis, Brianne O. Camp, David G., II Rosenbach, Alan E. Goverman, Jeremy Fagan, Shawn P. Brownstein, Bernard H. Irimia, Daniel Xu, Weihong Wilhelmy, Julie Mindrinos, Michael N. Smith, Richard D. Davis, Ronald W. Tompkins, Ronald G. Toner, Mehmet CA Inflammation Host Response Injury TI Clinical microfluidics for neutrophil genomics and proteomics SO NATURE MEDICINE LA English DT Article ID CHROMATOGRAPHY-MASS SPECTROMETRY; COLONY-STIMULATING FACTOR; T-CELL; POLYMORPHONUCLEAR NEUTROPHILS; INFLAMMATORY STIMULI; EXPRESSION; LIPOPOLYSACCHARIDE; ACTIVATION; BLOOD; MACROPHAGES AB Neutrophils have key roles in modulating the immune response. We present a robust methodology for rapidly isolating neutrophils directly from whole blood with 'on-chip' processing for mRNA and protein isolation for genomics and proteomics. We validate this device with an ex vivo stimulation experiment and by comparison with standard bulk isolation methodologies. Last, we implement this tool as part of a near-patient blood processing system within a multi-center clinical study of the immune response to severe trauma and burn injury. The preliminary results from a small cohort of subjects in our study and healthy controls show a unique time-dependent gene expression pattern clearly demonstrating the ability of this tool to discriminate temporal transcriptional events of neutrophils within a clinical setting. C1 [Kotz, Kenneth T.; Xiao, Wenzong; Russom, Aman; Rosenbach, Alan E.; Goverman, Jeremy; Fagan, Shawn P.; Irimia, Daniel; Tompkins, Ronald G.; Toner, Mehmet] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Shriners Hosp Children,Dept Surg, Boston, MA 02115 USA. [Xiao, Wenzong; Xu, Weihong; Wilhelmy, Julie; Mindrinos, Michael N.; Davis, Ronald W.] Stanford Genome Technol Ctr, Palo Alto, CA USA. [Miller-Graziano, Carol; De, Asit; Bankey, Paul E.] Univ Rochester, Sch Med, Dept Surg, Rochester, NY USA. [Qian, Wei-Jun; Petritis, Brianne O.; Camp, David G., II; Smith, Richard D.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. [Qian, Wei-Jun; Petritis, Brianne O.; Camp, David G., II; Smith, Richard D.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. [Warner, Elizabeth A.; Moldawer, Lyle L.] Univ Florida, Coll Med, Dept Surg, Gainesville, FL USA. [Brownstein, Bernard H.] Washington Univ, Dept Radiat Oncol, St Louis, MO USA. RP Kotz, KT (reprint author), Harvard Univ, Massachusetts Gen Hosp, Sch Med, Shriners Hosp Children,Dept Surg, Boston, MA 02115 USA. EM kkotz@partners.org; mtoner@hms.harvard.edu RI Qian, Weijun/C-6167-2011; Russom, Aman/B-1675-2012; Smith, Richard/J-3664-2012; Xu, Weihong/C-4175-2012; OI Smith, Richard/0000-0002-2381-2349; Irimia, Daniel/0000-0001-7347-2082; Russom, Aman/0000-0002-0242-358X FU US National Institutes of Health (NIH) [T32 GM-007035-32]; US NIH Inflammation FX We thank O. Hurtado, K. Eken, K. Richter and A. Gupta for microfabrication support. We thank C. Vanderburg for help with nucleic acid analysis and the use of the Harvard NeuroDiscovery Center Agilent Bioanalyzer 2100. We thank the University of Florida technical staff (A. Abouhamze, C. Tannahill and R. Ungaro) for managing clinical implementation of the microfluidic devices. K. T. K. was supported by a US National Institutes of Health (NIH) training grant T32 GM-007035-32. These studies were supported by the US NIH Inflammation and the Host Response to Injury Large Scale Collaborative Project, U54 GM-062119, BioMEMS Resource Center P41 EB-002503 and Proteomics Research Resource for Integrative Biology RR018522. The ex vivo stimulation studies and genomics protocol development were partially supported by US National Institutes of Health grants R01-GM-36214 and P01 HG000205, respectively. The proteomics work was performed in the Environmental Molecular Sciences Laboratory, a US Department of Energy Office of Biological and Environmental Research national scientific user facility on the Pacific Northwest National Laboratory (PNNL) campus. PNNL is multiprogram national laboratory operated by Battelle for the Department of Energy under contract number DE-AC05-76RLO 1830. NR 39 TC 78 Z9 79 U1 3 U2 45 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA SN 1078-8956 J9 NAT MED JI Nat. Med. PD SEP PY 2010 VL 16 IS 9 BP 1042 EP U142 DI 10.1038/nm.2205 PG 7 WC Biochemistry & Molecular Biology; Cell Biology; Medicine, Research & Experimental SC Biochemistry & Molecular Biology; Cell Biology; Research & Experimental Medicine GA 647MP UT WOS:000281622900035 PM 20802500 ER PT J AU Emma, P Akre, R Arthur, J Bionta, R Bostedt, C Bozek, J Brachmann, A Bucksbaum, P Coffee, R Decker, FJ Ding, Y Dowell, D Edstrom, S Fisher, A Frisch, J Gilevich, S Hastings, J Hays, G Hering, P Huang, Z Iverson, R Loos, H Messerschmidt, M Miahnahri, A Moeller, S Nuhn, HD Pile, G Ratner, D Rzepiela, J Schultz, D Smith, T Stefan, P Tompkins, H Turner, J Welch, J White, W Wu, J Yocky, G Galayda, J AF Emma, P. Akre, R. Arthur, J. Bionta, R. Bostedt, C. Bozek, J. Brachmann, A. Bucksbaum, P. Coffee, R. Decker, F. -J. Ding, Y. Dowell, D. Edstrom, S. Fisher, A. Frisch, J. Gilevich, S. Hastings, J. Hays, G. Hering, Ph. Huang, Z. Iverson, R. Loos, H. Messerschmidt, M. Miahnahri, A. Moeller, S. Nuhn, H. -D. Pile, G. Ratner, D. Rzepiela, J. Schultz, D. Smith, T. Stefan, P. Tompkins, H. Turner, J. Welch, J. White, W. Wu, J. Yocky, G. Galayda, J. TI First lasing and operation of an angstrom-wavelength free-electron laser SO NATURE PHOTONICS LA English DT Article ID AMPLIFIED SPONTANEOUS-EMISSION; LIGHT SOURCE LCLS; EXTREME-ULTRAVIOLET; SLAG LINAC; GAIN; FEL; SATURATION; RADIATION AB The recently commissioned Linac Coherent Light Source is an X-ray free-electron laser at the SLAC National Accelerator Laboratory. It produces coherent soft and hard X-rays with peak brightness nearly ten orders of magnitude beyond conventional synchrotron sources and a range of pulse durations from 500 to <10 fs (10(-15) s). With these beam characteristics this light source is capable of imaging the structure and dynamics of matter at atomic size and timescales. The facility is now operating at X-ray wavelengths from 22 to 1.2 angstrom and is presently delivering this high-brilliance beam to a growing array of scientific researchers. We describe the operation and performance of this new 'fourth-generation light source'. C1 [Emma, P.; Akre, R.; Arthur, J.; Bostedt, C.; Bozek, J.; Brachmann, A.; Bucksbaum, P.; Coffee, R.; Decker, F. -J.; Ding, Y.; Dowell, D.; Edstrom, S.; Fisher, A.; Frisch, J.; Gilevich, S.; Hastings, J.; Hays, G.; Hering, Ph.; Huang, Z.; Iverson, R.; Loos, H.; Messerschmidt, M.; Miahnahri, A.; Moeller, S.; Nuhn, H. -D.; Ratner, D.; Rzepiela, J.; Schultz, D.; Smith, T.; Stefan, P.; Tompkins, H.; Turner, J.; Welch, J.; White, W.; Wu, J.; Yocky, G.; Galayda, J.] Stanford Linear Accelerator Ctr, Natl Accelerator Lab, Stanford, CA 94309 USA. [Bionta, R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Pile, G.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Emma, P (reprint author), Stanford Linear Accelerator Ctr, Natl Accelerator Lab, Stanford, CA 94309 USA. EM emma@slac.stanford.edu RI Messerschmidt, Marc/F-3796-2010; Bozek, John/E-9260-2010; OI Messerschmidt, Marc/0000-0002-8641-3302; Bozek, John/0000-0001-7486-7238; Loos, Henrik/0000-0001-5085-0562 FU US Department of Energy, Office of Science [DE-AC02-76SF005]; Office of Basic Energy Sciences FX The authors would like to express their sincere thanks to the many people at SLAC, LLNL, ANL and UCLA who contributed to this project, including the accelerator operations group, the electron and X-ray systems controls groups, ANL undulator systems design, LLNL X-ray diagnostics/optics, RF engineering, mechanical design, metrology, precision magnetic measurements, power conversion and the dedicated machine maintenance groups. We also thank the LBNL timing and synchronization team and in particular H. Sinn and J. Gruenert of DESY and S. Zholents of LBNL for their appreciable help with FEL commissioning in the spring of 2009. We are also grateful for the support of the US Department of Energy, Office of Science, under contract no. DE-AC02-76SF005, and the sponsorship of the LCLS mission by the Office of Basic Energy Sciences. NR 43 TC 1207 Z9 1220 U1 31 U2 290 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1749-4885 J9 NAT PHOTONICS JI Nat. Photonics PD SEP PY 2010 VL 4 IS 9 BP 641 EP 647 DI 10.1038/NPHOTON.2010.176 PG 7 WC Optics; Physics, Applied SC Optics; Physics GA 645NO UT WOS:000281467900020 ER PT J AU Miklossy, J Qing, H Radenovic, A Kis, A Vileno, B Laszlo, F Miller, L Martins, RN Waeber, G Mooser, V Bosman, F Khalili, K Darbinian, N McGeer, PL AF Miklossy, Judith Qing, Hong Radenovic, Aleksandra Kis, Andras Vileno, Bertrand Laszlo, Forro Miller, Lisa Martins, Ralph N. Waeber, Gerard Mooser, Vincent Bosman, Fred Khalili, Kamel Darbinian, Nune McGeer, Patrick L. TI Beta amyloid and hyperphosphorylated tau deposits in the pancreas in type 2 diabetes SO NEUROBIOLOGY OF AGING LA English DT Article DE Alzheimer's disease; Amylin; Beta amyloid; Apolipoprotein-E; Apolipoprotein-a; APP; LPS; Type 2 diabetes; IBI/JIP-I; JNK-1; Tau; Ubiquitin ID ALZHEIMERS-DISEASE; APOLIPOPROTEIN-E; CELL-LINES; INSULIN-RESISTANCE; COGNITIVE FUNCTION; MELLITUS; RISK; BRAIN; DEMENTIA; PROTEIN AB Strong epidemiologic evidence suggests an association between Alzheimer disease (AD) and type 2 diabetes To determine if amyloid beta (A beta) and hyperphosphorylated tau occurs in type 2 diabetes, pancreas tissues from 21 autopsy cases (10 type 2 diabetes and 11 controls) were analyzed APP and tau mRNAs were identified in human pancreas and in cultured insulinoma beta cells (INS-I) by RT-PCR Prominent APP and tau bands were detected by Western blotting in pancreatic extracts Aggregated A beta, hyperphosphorylated tau, ubiquitin, apolipoprotein E. apolipoprotein(a), IBI/JIP-1 and JNK1 were detected in Langerhans islets in type 2 diabetic patients A beta was co-localized with amylin in islet amyloid deposits. In situ beta sheet formation of islet amylold deposits was shown by infrared microspectroscopy (SIRMS) LPS increased APP in non-neuronal cells as well We conclude that A beta deposits and hyperphosphorylated tau are also associated with type 2 diabetes, highlighting common pathogenetic features in neurodegenerative disorders, including AD and type 2 diabetes and suggesting that A beta deposits and hyperphosphorylated tau may also occur in other organs than the brain (C) 2008 Elsevier Inc All rights reserved C1 [Miklossy, Judith; Qing, Hong; McGeer, Patrick L.] Univ British Columbia, Kinsmen Lab Neurol Res, Vancouver, BC V6T 1Z3, Canada. [Radenovic, Aleksandra; Kis, Andras; Vileno, Bertrand; Laszlo, Forro] Swiss Fed Inst Technol, Inst Phys Complex Matter, CH-15 Lausanne, Switzerland. [Miller, Lisa] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. [Martins, Ralph N.] Univ Western Australia, Hollywood Private Hosp, Sch Psychiat & Clin Neurosci, Sir James McCusker Alzheimers Dis Res Unit, Perth, WA 6009, Australia. [Waeber, Gerard] CHUV Univ Hosp, Dept Internal Med, Lausanne, Switzerland. [Mooser, Vincent] GlaxoSmithKline Inc, Div Genet, King Of Prussia, PA USA. [Bosman, Fred] CHUV, Univ Inst Pathol, Lausanne, Switzerland. [Darbinian, Nune] Edith Cowan Univ, Ctr Excellence Alzheimers Dis Res & Care, Churchlands, WA 6018, Australia. [Khalili, Kamel; Darbinian, Nune] Temple Univ, Dept Neurosci, Inst Neurovirol, Philadelphia, PA 19122 USA. RP Miklossy, J (reprint author), Univ British Columbia, Kinsmen Lab Neurol Res, 2255 Wesbrook Mall,3N6, Vancouver, BC V6T 1Z3, Canada. RI Kis, Andras/A-4631-2011; Radenovic, Aleksandra/C-5350-2011; Vileno, Bertrand/F-5111-2011 OI Kis, Andras/0000-0002-3426-7702; FU Societe Academique Vaudoise; Fondation Fern Moffat; Jack Brown and Family Foundation; British Columbia, Canada FX We are particularly grateful to all the pathologist colleagues at the University Institute of Pathology, Lausanne, Switzerland, who helped to collect part of the tissue samples from various other organs than the brain, including the pancreas Their dedicated help through more than two decades resulted in several studies Without their efforts, this work would not have been completed We are particularly grateful to Pushpa Darekar for her devoted help and contribution to the present work and to Dr Santica Marcovma (University of Washington. Seattle WA) for the generous gift of the anti-apo(a) antibodies. This research was supported by grants from the Societe Academique Vaudoise, Fondation Fern Moffat, as well as from the Jack Brown and Family Foundation and The Pacific Alzheimer Research Foundation from British Columbia, Canada NR 50 TC 52 Z9 55 U1 2 U2 18 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0197-4580 J9 NEUROBIOL AGING JI Neurobiol. Aging PD SEP PY 2010 VL 31 IS 9 BP 1503 EP 1515 DI 10.1016/j.neurobiolaging.2008.08.019 PG 13 WC Geriatrics & Gerontology; Neurosciences SC Geriatrics & Gerontology; Neurosciences & Neurology GA 632UO UT WOS:000280454700002 PM 18950899 ER PT J AU Basunia, MS AF Basunia, M. Shamsuzzoha TI Nuclear Data Sheets for A=30 SO NUCLEAR DATA SHEETS LA English DT Article ID NEUTRON-RICH NUCLEI; 1ST EXCITED-STATE; ELECTRIC QUADRUPOLE-MOMENTS; PROTON INELASTIC-SCATTERING; N=20 SHELL CLOSURE; BETA-DECAY; ENERGY-LEVELS; UNSTABLE NUCLEI; MEAN-FIELD; MASS MEASUREMENTS AB Evaluated spectroscopic data and level schemes from radioactive decay and nuclear reaction studies are presented for F-30, Ne-30, Na-30, Mg-30, Al-30, Si-30, P-30, S-30, and Cl-30. This evaluation for A=30 supersedes the previous evaluation 1998En04. However, some additional information for these nuclides can be found in earlier evaluations 1990En08 and 1978En02. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Basunia, MS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. FU Office of Basic Energy Sciences, US Department of Energy [DE-AC02-05CH11231] FX Research sponsored by Office of Basic Energy Sciences, US Department of Energy, under contract DE-AC02-05CH11231. NR 176 TC 15 Z9 16 U1 0 U2 3 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 SEP PY 2010 VL 111 IS 9 BP 2331 EP 2424 DI 10.1016/j.nds.2010.09.001 PG 94 WC Physics, Nuclear SC Physics GA 658YS UT WOS:000282532200001 ER PT J AU Browne, E Tuli, JK AF Browne, E. Tuli, J. K. TI Nuclear Data Sheets for A=65 SO NUCLEAR DATA SHEETS LA English DT Article ID HALF-LIFE MEASUREMENTS; ACTIVATION CROSS-SECTIONS; NEUTRON-RICH ISOTOPES; PHOTON-EMISSION PROBABILITIES; ISOBARIC ANALOG RESONANCES; GAMMA-RAY SPECTROSCOPY; MEDIUM-WEIGHT NUCLEI; MEV ALPHA-PARTICLES; LOW-LYING LEVELS; CUPRATE LA1.89CA1.11CU2O6+DELTA LA2126 AB The evaluators present in this publication spectroscopic data and level schemes from radioactive decay and nuclear reactions studies for all isobars with mass number A=65. Not much is known experimentally about V-65 and Cr-65, although they are expected to decay by beta(-) emission. Spin/parity assignments for Mn-65, Fe-65, As-65, and Se-65 are not firmly established. C1 [Browne, E.] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Browne, E.; Tuli, J. K.] Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA. RP Browne, E (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA USA. FU Office of Nuclear Physics, Office of Science, mus Department of Energy [DE-AC02-98CH10946] FX Research sponsored by Office of Nuclear Physics, Office of Science, mu s Department of Energy, under contract DE-AC02-98CH10946. NR 445 TC 23 Z9 23 U1 0 U2 3 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 SEP PY 2010 VL 111 IS 9 BP 2425 EP 2553 DI 10.1016/j.nds.2010.09.002 PG 129 WC Physics, Nuclear SC Physics GA 658YS UT WOS:000282532200002 ER PT J AU Hamman, KD Berry, RA AF Hamman, Kurt D. Berry, Ray A. TI A CFD simulation process for fast reactor fuel assemblies SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article; Proceedings Paper CT Workshop on Experiments and CFD Code Applications to Nuclear Reactor Safety (XCFD4NRS) CY SEP 10-12, 2008 CL Grenoble, FRANCE ID BUNDLE AB A CFD modeling and simulation process for large-scale problems using an arbitrary fast reactor fuel assembly design was evaluated. Three-dimensional flow distributions of sodium for several fast reactor fuel assembly pin spacing configurations were simulated on high performance computers using commercial CFD software. This research focused on 19-pin fuel assembly "benchmark" geometry, similar in design to the Advanced Burner Test Reactor, where each pin is separated by helical wire-wrap spacers. Several two-equation turbulence models including the k-epsilon and SST (Menter) k-omega were evaluated. Considerable effort was taken to resolve the momentum boundary layer, so as to eliminate the need for wall functions and reduce computational uncertainty. High performance computers were required to generate the hybrid meshes needed to predict secondary flows created by the wire-wrap spacers; computational meshes ranging from 65 to 85 million elements were common. A general validation methodology was followed, including mesh refinement and comparison of numerical results with empirical correlations. Predictions for velocity, temperature, and pressure distribution are shown. The uncertainty of numerical models, importance of high fidelity experimental data, and the challenges associated with simulating and validating large production-type problems are presented. (C) 2009 Elsevier B.V. All rights reserved. C1 [Hamman, Kurt D.; Berry, Ray A.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Hamman, KD (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA. EM Kurt.Hamman@inl.gov NR 16 TC 10 Z9 12 U1 1 U2 5 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 SEP PY 2010 VL 240 IS 9 BP 2304 EP 2312 DI 10.1016/j.nucengdes.2009.11.007 PG 9 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 635LL UT WOS:000280657000026 ER PT J AU Cottrill, LA Kemp, A Tabak, M Town, RPJ AF Cottrill, L. A. Kemp, A. Tabak, M. Town, R. P. J. TI Characterization of escaping electrons from simulations of hot electron transport for intense femtosecond laser-target scenarios SO NUCLEAR FUSION LA English DT Article ID MAGNETIC-FIELDS; GENERATION; IGNITION; MATTER AB Early experimental and analytical results for short-pulse, high intensity laser-target scenarios have claimed the existence of significant surface currents along the target edge due to hot electron confinement by electromagnetic surface fields. However, more recent fully integrated-explicit and hybrid-implicit particle-in-cell (PIC) simulations have revealed that surface confinement is only a minor effect. This discrepancy can be attributed to an observational effect; only a small fraction of electrons escape and they may not represent the bulk distribution. PIC simulations reveal that enhanced surface emission is largely dependent on target geometry and has only a minor dependence on laser incidence angle and/or the angular distribution of the hot electron birth distribution. Furthermore, the escape distribution appears to differ from the initial birth distribution primarily at low energies and is higher in temperature, which is significant for the interpretation of experimental measurements. C1 [Cottrill, L. A.; Kemp, A.; Tabak, M.; Town, R. P. J.] Lawrence Livermore Natl Lab, Livermore, CA 94450 USA. [Cottrill, L. A.] MIT, Cambridge, MA 02139 USA. RP Cottrill, LA (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94450 USA. NR 23 TC 7 Z9 7 U1 0 U2 2 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 2010 VL 50 IS 9 AR 095002 DI 10.1088/0029-5515/50/9/095002 PG 12 WC Physics, Fluids & Plasmas SC Physics GA 636VG UT WOS:000280770700002 ER PT J AU Turco, F Luce, TC AF Turco, F. Luce, T. C. TI Impact of the current profile evolution on tearing stability of ITER demonstration discharges in DIII-D SO NUCLEAR FUSION LA English DT Article ID TRANSPORT CODE; PHYSICS BASIS; D TOKAMAK; LIMITS; M=2 AB A set of > 100 DIII-D ITER demonstration discharges was analysed with the goal of characterizing the tearing stability of ITER baseline scenario plasmas on the energy and resistive evolution time scales. In DIII-D these discharges are limited by the appearance of an n = 1 tearing instability, after the discharge has run at constant pressure for several confinement times (tau(E) less than or similar to 200 ms). Since the resistive time is greater than or similar to 1 s, the current profile is still evolving when the modes appear. Across the ranges of pressure explored around the ITER design value, the probability of a discharge remaining stable equals that of encountering a mode; therefore, it seems that the tearing stability boundary cannot be characterized as a pressure limit. The internal inductance, a measure of the current distribution, does not contain enough detail to describe the tearing stability limits precisely, despite clear evidence that the evolution of the current profile is the cause of the instability and not the reaching of a beta limit. The onset of the instability does not seem to be correlated with the plasma rotation or the presence of ELMs. C1 [Turco, F.] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA. [Luce, T. C.] Gen Atom Co, San Diego, CA 92186 USA. RP Turco, F (reprint author), Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA. EM turcof@fusion.gat.com FU US Department of Energy [DE-FC02-04ER54698] FX This work was supported by the US Department of Energy under Cooperative Agreement No DE-FC02-04ER54698. NR 16 TC 12 Z9 12 U1 0 U2 3 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD SEP PY 2010 VL 50 IS 9 AR 095010 DI 10.1088/0029-5515/50/9/095010 PG 8 WC Physics, Fluids & Plasmas SC Physics GA 636VG UT WOS:000280770700010 ER PT J AU Qiang, J AF Qiang, Ji TI Short wavelength seeding through compression for free electron lasers SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Free electron laser seeding; Modulation compression ID GENERATION; LIGHT AB In this paper, we propose a seeding scheme that compresses an initial laser modulation in the longitudinal phase space of an electron beam by using two opposite sign bunch compressors and two opposite sign energy chirpers. This scheme could potentially reduce the initial modulation wavelength by a factor of C and increase the energy modulation amplitude by a factor of C, where C is the compression factor of the first bunch compressor. Using two lasers as energy chirpers, such a modulation compression scheme can generate kilo-Amper short wavelength current modulation with significant bunching factor from an initial a few tens Amper current. This compression scheme can also be used to generate a prebunched single atto-second short wavelength current modulation and prebunched two color, two atto-second modulations. (C) 2010 Elsevier B.V. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Qiang, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM jqiang@lbl.gov FU Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231] FX We would like to thank Drs. J. Corlett, B. Fawley, G. Penn, R. Ryne, C. Toth, M. Venturini, J. Wu, A. Zholents for useful discussions. This research was supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. This research used resources of the National Energy Research Scientific Computing Center. NR 23 TC 3 Z9 3 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 39 EP 46 DI 10.1016/j.nima.2010.04.053 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100004 ER PT J AU Pivi, MTF Collet, G King, F Kirby, RE Markiewicz, T Raubenheimer, TO Seeman, J Le Pimpec, F AF Pivi, M. T. F. Collet, G. King, F. Kirby, R. E. Markiewicz, T. Raubenheimer, T. O. Seeman, J. Le Pimpec, F. TI Experimental observations of in situ secondary electron yield reduction in the PEP-II particle accelerator beam line SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Linear colliders; Beam instability; Electron cloud; Secondary electron yield ID INTENSE PHOTON IRRADIATION; NONEVAPORABLE GETTER FILMS; THIN-FILM; PHOTOELECTRON; TIN; COATINGS AB Beam instability caused by the electron cloud has been observed in positron and proton storage rings and it is expected to be a limiting factor in the performance of the positron damping ring (DR) of future linear colliders (LC) such as ILC and CLIC [1,2]. To test a series of promising possible electron cloud mitigation techniques as surface coatings and grooves, in the Positron low-energy ring (LER) of the PEP-II accelerator, we have installed several test vacuum chambers including (i) a special chamber to monitor the variation in the secondary electron yield of technical surface materials and coatings under the effect of ion, electron and photon conditioning in situ in the beam line (ii) chambers with grooves [3] in a straight magnetic-free section and (iii) coated chambers in a dedicated newly installed 4-magnet chicane [4] to study mitigations in a magnetic field region. In this paper, we describe the ongoing R&D effort to mitigate the electron cloud effect for the LC damping ring, focusing on the first experimental area and on results of the reduction in the secondary electron yield due to in situ conditioning. Published by Elsevier B.V. C1 [Pivi, M. T. F.; Collet, G.; King, F.; Kirby, R. E.; Markiewicz, T.; Raubenheimer, T. O.; Seeman, J.] SLAC, Menlo Pk, CA 94025 USA. [Le Pimpec, F.] Paul Scherrer Inst, CH-5232 Villigen, Switzerland. RP Pivi, MTF (reprint author), SLAC, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA. EM mpivi@slac.stanford.edu FU Office of Science, High Energy Physics, US DOE [DE-AC02-76SF00515] FX Work supported by the Director, Office of Science, High Energy Physics, US DOE under Contract no. DE-AC02-76SF00515. NR 29 TC 4 Z9 4 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 47 EP 56 DI 10.1016/j.nima.2010.04.059 PG 10 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100005 ER PT J AU Abata, E Abdallah, JM Addy, TN Adragna, P Aharrouche, M Ahmad, A Akesson, TPA Aleksa, M Alexa, C Anderson, K Anghinolfi, F Antonaki, A Arabidze, G Arik, E Baker, OK Banfi, D Baron, S Beck, HP Belhorma, B Benchekroun, D Benjamin, DP Benslama, K Kuutmann, EB Bertelsen, H Binet, S Biscarat, C Boldea, V Bondarenko, VG Boonekamp, M Bosman, M Bourdarios, C Chromek, DB Bychkov, V Callahan, J Calvet, D Canneri, M Garrido, MC Caprini, M Sas, LC Carli, T Carminati, L Carvalho, J Cascella, M Castillo, MV Catinaccio, A Sforza, MC Cavalli, D Cavasinni, V Cetin, SA Chen, H Cherkaoui, R Chevallier, F Ciobotaru, M Citterio, M Cleland, B Cogneras, E Muino, PC Consonni, M Constantinescu, S Cornelissen, T Radu, AC Costa, G Cwetanski, P Silva, D Dam, M Danielsson, HO Dannheim, D Davidek, T De, K Defay, PO Dekhissi, B Del Peso, J Delmastro, M Del Prete, T Derue, F Di Ciaccio, L Di Girolamo, B Dita, S Dittus, F Djama, F Djobava, T Dobson, M Dolgoshein, BA Dotti, A Drake, G Dressnandt, N Driouchi, C Ebenstein, WL Eerola, P Efthymiopoulos, I Egorov, K Eifert, TF El Kacimi, M Etienvre, AI Fabich, A Fakhr-Edine, AI Fanti, M Farbin, A Farthouat, P Fassouliotis, D Fayard, L Febbraro, R Fedin, OL Fenyuk, A Ferrari, R Ferreira, BC Ferrer, A Filippini, G Fournier, D Francavilla, P Francis, D Froeschl, R Froidevaux, D Fullana, E Gadomski, S Gagnon, P Gameiro, S Garcia, R Ghodbane, N Giakoumopoulou, V Giangiobbe, V Giokaris, N Glonti, G Gollub, N Comes, A Gomez, MD Gonzalez, V Gorini, B Goujdamiav, D Grahn, KJ Grenier, P Grigalashvili, N Grishkevich, Y Gruwe, M Guicheney, C Gupta, A Haeberli, C Hajduk, Z Hakobyan, H Hance, M Hansen, PH Harvey, A Correia, AH Hervas, L Higon, E Hoffman, J Hostachy, JY Hruska, I Hubaut, F Hulsbergen, W Hurwitz, M Iconomidou-Fayard, L Jen-La Plante, I Johansson, PDC Jon-And, K Joos, M Jorgensen, S Kaczmarska, A Kado, M Karyukhin, A Kataoka, M Kayumov, F Kazarov, A Keener, PT Kekelidze, GD Kerschen, N Khoriauli, G Khramov, E Khristachev, A Khubua, J Kittelmann, TH Klinkby, E Koffas, T Kolos, S Konovalov, SP Kopikov, S Korolkov, I Kovalenko, S Kowalski, TZ Kruger, K Kramarenko, V Kudin, LG Kulchitsky, Y Lafaye, R Laforge, B Lampl, W Lanni, F Laplace, S Le Bihan, AC Lechowski, M Ledroit-Guillon, F Lehmann, G Leitner, R Lelas, D Liang, Z Liang, Z Lichard, P Lokajicek, M Louchard, L Loureiro, K Lucotte, A Luehring, F Lundberg, B Lund-Jensen, B Ma, H Mackeprang, R Maio, A Maleev, VP Malek, F Maneira, J Mandelli, L Mazzanti, M Manousakis, A Mapelli, L Marques, C Martin, F Mazzanti, M McFarlane, KW Mchedlidze, G McPherson, R Meirosu, C Meng, Z Miagkov, A Mialkovski, V Milstead, D Minashvili, I Mindur, B Mitsou, VA Monnier, E Morozov, SV Mosidze, M Mouraviev, SV Munar, A Nadtochi, AV Negri, A Nemecek, S Nessi, M Nesterov, SY Newcomer, FM Nikitine, I Nikolic-Audit, I Ogren, H Oh, SH Oleshko, SB Olszowska, J Onofre, A Aranda, CP Paganis, S Pallin, D Pantea, D Paolone, V Parsons, J Pasqualucci, E Passmore, MS Patrichev, S Peez, M Reale, VP Perini, L Peshekhonov, VD Petersen, J Petersen, TC Petti, R Pilcher, J Pina, J Pinto, B Podlyski, F Poggioli, L Poveda, J Pralavorio, P Pribyl, L Price, MJ Prieur, D Puigdengoles, C Puzo, P Rajagopalan, S Rembser, C Ridel, M Riu, I Roda, C Rohne, O Romaniouk, A Rousseau, D Ruiz, A Rusakovich, N Rust, D Ryabov, YF Ryjov, V Salto, O Salvachua, B Sanchis, E Rios, CS Santoni, C Saraiva, JG Sarri, F Sauvage, G Says, LP Schaefer, M Schegelsky, VA Schlager, G Schlereth, J Schmitt, C Schwemling, P Schwindling, J Seixas, JM Seliverstov, DM Serin, L Shalanda, N Shin, T Shmeleva, A Silva, J Simion, S Simonyan, M Sloper, JE Smirnov, SY Smirnova, L Solans, C Solodkov, A Solovianov, O Soloviev, I Sosnovtsev, VV Spano, F Speckmeyer, P Stancu, S Stanek, R Starchenko, E Straessner, A Suchkov, SI Suk, M Szczygiel, RR Tarrade, F Tartarelli, F Tas, P Tayalati, Y Teuscher, R Thioye, M Tikhomirov, VO Tisserant, S Torres, J Tremblet, L Tsiareshka, P Tsiskaridze, V Unal, G Unel, G Usai, G Valero, A Valkar, S Valls, JA Van Berg, R Vandelli, W Vannucci, F Vartapetian, A Vassilakopoulos, VI Vassilieva, L Vazeille, F Vetter-Cole, Y Vichou, I Vinogradov, V Vivarelli, I Volpi, M Wang, C Werner, P Wheeler, S Wiesmann, M Wilkens, H Williams, HH Wingerter-Seez, I Yasu, Y Zaitsev, A Zenin, A Zenis, T Zenonos, Z Zhang, H Zhou, N AF Abata, E. Abdallah, J. M. Addy, T. N. Adragna, P. Aharrouche, M. Ahmad, A. Akesson, T. P. A. Aleksa, M. Alexa, C. Anderson, K. Anghinolfi, F. Antonaki, A. Arabidze, G. Arik, E. Baker, O. K. Banfi, D. Baron, S. Beck, H. P. Belhorma, B. Benchekroun, D. Benjamin, D. P. Benslama, K. Kuutmann, E. Bergeaas Bertelsen, H. Binet, S. Biscarat, C. Boldea, V. Bondarenko, V. G. Boonekamp, M. Bosman, M. Bourdarios, C. Chromek, D. Burckhart Bychkov, V. Callahan, J. Calvet, D. Canneri, M. Garrido, M. Capeans Caprini, M. Sas, L. Cardiel Carli, T. Carminati, L. Carvalho, J. Cascella, M. Castillo, M. V. Catinaccio, A. Sforza, M. Cavalli Cavalli, D. Cavasinni, V. Cetin, S. A. Chen, H. Cherkaoui, R. Chevallier, F. Ciobotaru, M. Citterio, M. Cleland, B. Cogneras, E. Muino, P. Conde Consonni, M. Constantinescu, S. Cornelissen, T. Radu, A. Corso Costa, G. Cwetanski, P. Da Silva, D. DAM, M. Danielsson, H. O. Dannheim, D. Davidek, T. De, K. Defay, P. O. Dekhissi, B. Del Peso, J. Delmastro, M. Del Prete, T. Derue, F. Di Ciaccio, L. Di Girolamo, B. Dita, S. Dittus, F. Djama, F. Djobava, T. Dobson, M. Dolgoshein, B. A. Dotti, A. Drake, G. Dressnandt, N. Driouchi, C. Ebenstein, W. L. Eerola, P. Efthymiopoulos, I. Egorov, K. Eifert, T. F. El Kacimi, M. Etienvre, A. I. Fabich, A. Fakhr-Edine, A. I. Fanti, M. Farbin, A. Farthouat, P. Fassouliotis, D. Fayard, L. Febbraro, R. Fedin, O. L. Fenyuk, A. Ferrari, R. Ferreira, B. C. Ferrer, A. Filippini, G. Fournier, D. Francavilla, P. Francis, D. Froeschl, R. Froidevaux, D. Fullana, E. Gadomski, S. Gagnon, P. Gameiro, S. Garcia, R. Ghodbane, N. Giakoumopoulou, V. Giangiobbe, V. Giokaris, N. Glonti, G. Gollub, N. Comes, A. Gomez, M. D. Gonzalez, V. Gorini, B. Goujdamiav, D. Grahn, K. J. Grenier, P. Grigalashvili, N. Grishkevich, Y. Gruwe, M. Guicheney, C. Gupta, A. Haeberli, C. Hajduk, Z. Hakobyan, H. Hance, M. Hansen, P. H. Harvey, A., Jr. Correia, A. Henriques Hervas, L. Higon, E. Hoffman, J. Hostachy, J. Y. Hruska, I. Hubaut, F. Hulsbergen, W. Hurwitz, M. Iconomidou-Fayard, L. Jen-La Plante, I. Johansson, P. D. C. Jon-And, K. Joos, M. Jorgensen, S. Kaczmarska, A. Kado, M. Karyukhin, A. Kataoka, M. Kayumov, F. Kazarov, A. Keener, P. T. Kekelidze, G. D. Kerschen, N. Khoriauli, G. Khramov, E. Khristachev, A. Khubua, J. Kittelmann, T. H. Klinkby, E. Koffas, T. Kolos, S. Konovalov, S. P. Kopikov, S. Korolkov, I. Kovalenko, S. Kowalski, T. Z. Kruger, K. Kramarenko, V. Kudin, L. G. Kulchitsky, Y. Lafaye, R. Laforge, B. Lampl, W. Lanni, F. Laplace, S. Le Bihan, A. C. Lechowski, M. Ledroit-Guillon, F. Lehmann, G. Leitner, R. Lelas, D. Liang, Z. Liang, Z. Lichard, P. Lokajicek, M. Louchard, L. Loureiro, K. Lucotte, A. Luehring, F. Lundberg, B. Lund-Jensen, B. Ma, H. Mackeprang, R. Maio, A. Maleev, V. P. Malek, F. Maneira, J. Mandelli, L. Mazzanti, M. Manousakis, A. Mapelli, L. Marques, C. Martin, F. Mazzanti, M. McFarlane, K. W. Mchedlidze, G. McPherson, R. Meirosu, C. Meng, Z. Miagkov, A. Mialkovski, V. Milstead, D. Minashvili, I. Mindur, B. Mitsou, V. A. Monnier, E. Morozov, S. V. Mosidze, M. Mouraviev, S. V. Munar, A. Nadtochi, A. V. Negri, A. Nemecek, S. Nessi, M. Nesterov, S. Y. Newcomer, F. M. Nikitine, I. Nikolic-Audit, I. Ogren, H. Oh, S. H. Oleshko, S. B. Olszowska, J. Onofre, A. Aranda, C. Padilla Paganis, S. Pallin, D. Pantea, D. Paolone, V. Parsons, J. Pasqualucci, E. Passmore, M. S. Patrichev, S. Peez, M. Reale, V. Perez Perini, L. Peshekhonov, V. D. Petersen, J. Petersen, T. C. Petti, R. Pilcher, J. Pina, J. Pinto, B. Podlyski, F. Poggioli, L. Poveda, J. Pralavorio, P. Pribyl, L. Price, M. J. Prieur, D. Puigdengoles, C. Puzo, P. Rajagopalan, S. Rembser, C. Ridel, M. Riu, I. Roda, C. Rohne, O. Romaniouk, A. Rousseau, D. Ruiz, A. Rusakovich, N. Rust, D. Ryabov, Y. F. Ryjov, V. Salto, O. Salvachua, B. Sanchis, E. Rios, C. Santamarina Santoni, C. Saraiva, J. G. Sarri, F. Sauvage, G. Says, L. P. Schaefer, M. Schegelsky, V. A. Schlager, G. Schlereth, J. Schmitt, C. Schwemling, P. Schwindling, J. Seixas, J. M. Seliverstov, D. M. Serin, L. Shalanda, N. Shin, T. Shmeleva, A. Silva, J. Simion, S. Simonyan, M. Sloper, J. E. Smirnov, S. Yu. Smirnova, L. Solans, C. Solodkov, A. Solovianov, O. Soloviev, I. Sosnovtsev, V. V. Spano, F. Speckmeyer, P. Stancu, S. Stanek, R. Starchenko, E. Straessner, A. Suchkov, S. I. Suk, M. Szczygiel, R. R. Tarrade, F. Tartarelli, F. Tas, P. Tayalati, Y. Teuscher, R. Thioye, M. Tikhomirov, V. O. Tisserant, S. Torres, J. Tremblet, L. Tsiareshka, P. Tsiskaridze, V. Unal, G. Unel, G. Usai, G. Valero, A. Valkar, S. Valls, J. A. Van Berg, R. Vandelli, W. Vannucci, F. Vartapetian, A. Vassilakopoulos, V. I. Vassilieva, L. Vazeille, F. Vetter-Cole, Y. Vichou, I. Vinogradov, V. Vivarelli, I. Volpi, M. Wang, C. Werner, P. Wheeler, S. Wiesmann, M. Wilkens, H. Williams, H. H. Wingerter-Seez, I. Yasu, Y. Zaitsev, A. Zenin, A. Zenis, T. Zenonos, Z. Zhang, H. Zhou, N. CA ATLAS Secretariat TI Study of energy response and resolution of the ATLAS barrel calorimeter to hadrons of energies from 20 to 350 GeV SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE ATLAS; Calorimetry; Test-beam; Calibration; Simulation AB A fully instrumented slice of the ATLAS detector was exposed to test beams from the SPS (Super Proton Synchrotron) at CERN in 2004. In this paper, the results of the measurements of the response of the barrel calorimeter to hadrons with energies in the range 20-350 GeV and beam impact points and angles corresponding to pseudo-rapidity values in the range 0.2-0.65 are reported. The results are compared to the predictions of a simulation program using the Geant 4 toolkit. (C) 2010 Published by Elsevier B.V. C1 [Abata, E.; Arik, E.; Cetin, S. A.] Bogazici Univ, Fac Sci, Dept Phys, TR-80815 Bebek, Turkey. [Abdallah, J. M.; Bosman, M.; Sforza, M. Cavalli; Jorgensen, S.; Korolkov, I.; Puigdengoles, C.; Salto, O.; Volpi, M.] Univ Autonoma Barcelona, IFAE, Inst Fis Altes Energies, ES-08193 Bellaterra, Spain. [Addy, T. N.; Harvey, A., Jr.; McFarlane, K. W.; Shin, T.; Vassilakopoulos, V. I.] Hampton Univ, Dept Phys, Hampton, VA 23668 USA. [Adragna, P.] Univ London, London EL 4NS, England. [Aharrouche, M.] Johannes Gutenberg Univ Mainz, Inst Fuer Phys, DE-55099 Mainz, Germany. [Ahmad, A.; Thioye, M.] Dept Phys & Astron, Stony Brook, NY 11794 USA. [Akesson, T. P. A.; Eerola, P.; Lundberg, B.] Lund Univ, Naturvetenskapliga Fak, Fys Inst, S-22100 Lund, Sweden. [Aleksa, M.; Anghinolfi, F.; Baron, S.; Chromek, D. Burckhart; Garrido, M. Capeans; Sas, L. Cardiel; Carli, T.; Catinaccio, A.; Cornelissen, T.; Radu, A. Corso; DAM, M.; Danielsson, H. O.; Dannheim, D.; Delmastro, M.; Di Girolamo, B.; Dittus, F.; Dobson, M.; Efthymiopoulos, I.; Eifert, T. F.; Fabich, A.; Farthouat, P.; Francis, D.; Froeschl, R.; Froidevaux, D.; Gameiro, S.; Gollub, N.; Gruwe, M.; Correia, A. Henriques; Hervas, L.; Hulsbergen, W.; Joos, M.; Kataoka, M.; Koffas, T.; Kruger, K.; Le Bihan, A. C.; Lehmann, G.; Lichard, P.; Mackeprang, R.; Mapelli, L.; Meirosu, C.; Nessi, M.; Aranda, C. Padilla; Passmore, M. S.; Petersen, J.; Petersen, T. C.; Pribyl, L.; Price, M. J.; Rembser, C.; Rios, C. Santamarina; Schlager, G.; Sloper, J. E.; Speckmeyer, P.; Tremblet, L.; Unal, G.; Vandelli, W.; Werner, P.; Wiesmann, M.; Wilkens, H.] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland. [Alexa, C.; Boldea, V.; Caprini, M.; Constantinescu, S.; Dita, S.; Pantea, D.] Natl Inst Phys & Nucl Engn, Bucharest IFIN HH, R-077125 Bucharest, Romania. [Anderson, K.; Gupta, A.; Hurwitz, M.; Jen-La Plante, I.; Pilcher, J.; Usai, G.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. 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[Benslama, K.] Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada. [Kuutmann, E. Bergeaas; Jon-And, K.; Milstead, D.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden. [Bertelsen, H.; Driouchi, C.; Fullana, E.; Hansen, P. H.] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. [Binet, S.; Bourdarios, C.; Fayard, L.; Fournier, D.; Iconomidou-Fayard, L.; Kado, M.; Lechowski, M.; Lelas, D.; Poggioli, L.; Puzo, P.; Rousseau, D.; Serin, L.; Simion, S.] Univ Paris 11, CNRS, IN2P3, LAL, Orsay, France. [Biscarat, C.] CNRS, IN2P3, Ctr Calcul, Lyon, France. [Bondarenko, V. G.; Dolgoshein, B. A.; Morozov, S. V.; Romaniouk, A.; Smirnov, S. Yu.; Sosnovtsev, V. V.; Suchkov, S. I.] Moscow Phys Engn Inst, RU-115409 Moscow, Russia. [Boonekamp, M.; Etienvre, A. I.; Schwindling, J.] CEA, DSM, DAPNIA, Ctr Etud Saclay, F-91191 Gif Sur Yvette, France. [Bychkov, V.; Glonti, G.; Grigalashvili, N.; Kekelidze, G. D.; Khoriauli, G.; Khramov, E.; Khubua, J.; Kulchitsky, Y.; Mialkovski, V.; Minashvili, I.; Peshekhonov, V. D.; Rusakovich, N.; Ryjov, V.; Tsiareshka, P.; Vinogradov, V.] Joint Inst Nucl Res, J1NR Dubna, RU-141980 Dubna, Moscow Region, Russia. [Callahan, J.; Cwetanski, P.; Egorov, K.; Gadomski, S.; Gagnon, P.; Luehring, F.; Ogren, H.; Rust, D.; Unel, G.] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA. [Calvet, D.; Defay, P. O.; Febbraro, R.; Filippini, G.; Ghodbane, N.; Guicheney, C.; Louchard, L.; Pallin, D.; Podlyski, F.; Santoni, C.; Says, L. P.; Tayalati, Y.; Vazeille, F.] Univ Blaise Pascal Clermont Ferrand, CNRS, IN2P3, Phys Corpusculaire Lab, FR-63177 Aubiere, France. [Canneri, M.; Cascella, M.; Cavasinni, V.; Del Prete, T.; Dotti, A.; Francavilla, P.; Giangiobbe, V.; Roda, C.; Sarri, F.; Vivarelli, I.; Zenonos, Z.] Univ Pisa, Dipartimento Fis E Fermi, IT-56127 Pisa, Italy. [Canneri, M.; Cascella, M.; Cavasinni, V.; Del Prete, T.; Dotti, A.; Francavilla, P.; Giangiobbe, V.; Roda, C.; Sarri, F.; Vivarelli, I.; Zenonos, Z.] INFN Pisa, IT-56127 Pisa, Italy. [Carvalho, J.; Muino, P. Conde; Comes, A.; Maio, A.; Maneira, J.; Marques, C.; Onofre, A.; Saraiva, J. G.; Silva, J.] LIP, Lab Instrumentacao & Fis Expt Particulas, PT-1000149 Lisbon, Portugal. [Castillo, M. V.; Ferrer, A.; Gonzalez, V.; Higon, E.; Mitsou, V. A.; Ruiz, A.; Sanchis, E.; Solans, C.; Torres, J.; Valero, A.; Valls, J. A.] Univ Valencia, CSIC, Ctr Mixto, IFIC, ES-46071 Valencia, Spain. [Cavalli, D.; Citterio, M.; Costa, G.; Mazzanti, M.; Perini, L.; Tartarelli, F.] INFN Sez Milano, IT-20133 Milan, Italy. [Chen, H.; Lanni, F.; Ma, H.; Rajagopalan, S.; Tarrade, F.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Cherkaoui, R.] Univ Mohammed 5, Fac Sci, Rabat, Morocco. [Ciobotaru, M.; Gorini, B.; Kolos, S.; Stancu, S.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Cleland, B.; Kittelmann, T. H.; Paolone, V.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. [Da Silva, D.; Ferreira, B. C.; Seixas, J. M.] Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil. [Davidek, T.; Hruska, I.; Leitner, R.; Suk, M.; Tas, P.; Valkar, S.] Charles Univ Prague, Fac Math & Phys, Inst Nucl & Particle Phys, CZ-18000 Prague 8, Czech Republic. [De, K.; Farbin, A.; Vartapetian, A.] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA. [Dekhissi, B.] Univ Mohammed Premier, Lab Phys Theor & Phys Particules, Oujda, Morocco. [Del Peso, J.; Garcia, R.; Peez, M.] Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor, ES-28049 Madrid, Spain. [Derue, F.; Kaczmarska, A.; Laforge, B.; Nikolic-Audit, I.; Ridel, M.; Schwemling, P.; Vannucci, F.] Univ Paris 06, Lab Phys Nucl & Hautes Energies, CNRS, IN2P3, FR-75252 Paris 05, France. [Derue, F.; Kaczmarska, A.; Laforge, B.; Nikolic-Audit, I.; Ridel, M.; Schwemling, P.; Vannucci, F.] Univ Denis Diderot Paris 7, Lab Phys Nucl & Hautes Energies, CNRS, IN2P3, FR-75252 Paris 05, France. [Di Ciaccio, L.; El Kacimi, M.; Lafaye, R.; Laplace, S.; Sauvage, G.; Simonyan, M.; Wingerter-Seez, I.] Univ Savoie, Phys Particules Lab, CNRS, IN2P3, Annecy Le Vieux, France. [Djama, F.; Hubaut, F.; Monnier, E.; Pralavorio, P.; Tisserant, S.; Zhang, H.] Univ Aix Marseille 2, Ctr Phys Particules Marseille, CNRS, IN2P3, F-13288 Marseille, France. [Djobava, T.; Khubua, J.; Mchedlidze, G.; Mosidze, M.; Reale, V. Perez; Tsiskaridze, V.] Tbilisi State Univ, Inst High Energy Phys, GE-380086 Tbilisi, Rep of Georgia. [Drake, G.; Salvachua, B.; Schlereth, J.; Stanek, R.] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. [Dressnandt, N.; Hance, M.; Keener, P. T.; Martin, F.; Munar, A.; Newcomer, F. M.; Van Berg, R.; Williams, H. H.] Univ Penn, Dept Phys, Philadelphia, PA 19104 USA. [El Kacimi, M.; Fakhr-Edine, A. I.; Goujdamiav, D.] Univ Cadi Ayyad, Marrakech, Morocco. [Fedin, O. L.; Kazarov, A.; Khristachev, A.; Kovalenko, S.; Kudin, L. G.; Maleev, V. P.; Nadtochi, A. V.; Nesterov, S. Y.; Oleshko, S. B.; Patrichev, S.; Ryabov, Y. F.; Schegelsky, V. A.; Seliverstov, D. M.; Soloviev, I.] Petersburg Nucl Phys Inst, RU-188300 Gatchina, Russia. [Fenyuk, A.; Karyukhin, A.; Kopikov, S.; Miagkov, A.; Nikitine, I.; Solodkov, A.; Solovianov, O.; Starchenko, E.; Zaitsev, A.; Zenin, A.] Inst High Energy Phys, Inst High Energy Phys, RU-142284 Protvino, Russia. [Ferrari, R.; Negri, A.] Univ Pavia, Dipartimento Fis Nucl & Teor, IT-27100 Pavia, Italy. [Ferrari, R.; Negri, A.] Ist Nazl Fis Nucl, IT-27100 Pavia, Italy. [Gomez, M. D.; Riu, I.] Univ Geneva, Sect Phys, CH-1211 Geneva, Switzerland. [Grahn, K. J.; Lund-Jensen, B.] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden. [Grenier, P.] SLAC Natl Accelerator Lab, Stanford, CA 94309 USA. [Grishkevich, Y.; Kramarenko, V.; Smirnova, L.] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, RU-119991 Moscow, Russia. [Hajduk, Z.; Olszowska, J.; Szczygiel, R. R.] Polish Acad Sci, H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland. [Hakobyan, H.] Yerevan Phys Inst, AM-375036 Yrevan, Armenia. [Hoffman, J.; Liang, Z.; Vetter-Cole, Y.] So Methodist Univ, Dept Phys, Dallas, TX 75275 USA. [Johansson, P. D. C.; Kerschen, N.; Paganis, S.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England. [Kayumov, F.; Konovalov, S. P.; Mouraviev, S. V.; Shmeleva, A.; Tikhomirov, V. O.; Vassilieva, L.] Acad Sci, PN Lebedev Phys Inst, RU-117924 Moscow, Russia. [Kowalski, T. Z.; Mindur, B.] Univ Sci & Technol, Fac Phys & Appl Comp Sci, FPACS AGH UST, PL-30059 Krakow, Poland. [Kulchitsky, Y.; Shalanda, N.; Tsiareshka, P.] Natl Acad Sci Belarus, BI Stepanov Phys Inst, Minsk 220072, Byelarus. [Lampl, W.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. [Liang, Z.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan. [Liang, Z.] Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China. [Lokajicek, M.; Nemecek, S.] Acad Sci Czech Republic, Inst Phys, CZ-18221 Prague 8, Czech Republic. [Lokajicek, M.; Nemecek, S.] Acad Sci Czech Republic, Inst Comp Sci, CZ-18221 Prague 8, Czech Republic. [Loureiro, K.] Ohio State Univ, Columbus, OH 43210 USA. [McPherson, R.] Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada. [Meng, Z.; Zhou, N.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan. [Meng, Z.] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China. [Parsons, J.; Spano, F.] Columbia Univ, Nevis Lab, Irvington, NY 10533 USA. [Pasqualucci, E.] Univ Roma La Sapienza, Dipartimento Fis, IT-00185 Rome, Italy. [Pasqualucci, E.] Ist Nazl Fis Nucl, IT-00185 Rome, Italy. [Petti, R.] Univ S Carolina, Columbia, SC 29208 USA. [Pina, J.; Pinto, B.] LIP, P-1000 Lisbon, Portugal. [Pina, J.; Pinto, B.] IDMEC IST, Lisbon, Portugal. [Poveda, J.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. [Prieur, D.] Rutherford Appleton Lab, Sci & Technol Facil Council, Didcot OX11 0QX, Oxon, England. [Rohne, O.] Univ Oslo, Dept Phys, NO-0316 Oslo, Norway. [Schmitt, C.] Univ Bonn, Inst Phys, D-53115 Bonn, Germany. [Straessner, A.] Tech Univ Dresden, Inst fuer Kern & Teilchenphys, D-01069 Dresden, Germany. [Teuscher, R.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. [Vichou, I.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA. [Wheeler, S.] Univ Alberta, Dept Phys, Ctr Particle Phys, Edmonton, AB T6G 2G7, Canada. [Yasu, Y.] High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. [Zenis, T.] Comenius Univ, Fac Math Phys & Informat, SK-84248 Bratislava, Slovakia. RI Nemecek, Stanislav/G-5931-2014; Lokajicek, Milos/G-7800-2014; Santamarina Rios, Cibran/K-4686-2014; Bosman, Martine/J-9917-2014; Riu, Imma/L-7385-2014; Torres, Jose/H-3231-2015; Ferrer, Antonio/H-2942-2015; Shmeleva, Alevtina/M-6199-2015; Tikhomirov, Vladimir/M-6194-2015; kayumov, fred/M-6274-2015; Suchkov, Sergey/M-6671-2015; Konovalov, Serguei/M-9505-2015; Fullana Torregrosa, Esteban/A-7305-2016; Kramarenko, Victor/E-1781-2012; Delmastro, Marco/I-5599-2012; Cascella, Michele/B-6156-2013; Mitsou, Vasiliki/D-1967-2009; Alexa, Calin/F-6345-2010; Pina, Joao /C-4391-2012; Conde Muino, Patricia/F-7696-2011; Nemecek, Stanislav/C-3487-2012; Szczygiel, Robert/B-5662-2011; Smirnova, Lidia/D-8089-2012; Smirnov, Sergei/F-1014-2011; De, Kaushik/N-1953-2013; Morozov, Sergey/C-1396-2014; Karyukhin, Andrey/J-3904-2014; Tartarelli, Giuseppe Francesco/A-5629-2016; Gonzalez Millan, Vicente/J-3023-2012; vasilyeva, lidia/M-9569-2015; SANCHIS, ENRIQUE/J-7348-2016; Maneira, Jose/D-8486-2011; Mindur, Bartosz/A-2253-2017; Solodkov, Alexander/B-8623-2017; Zaitsev, Alexandre/B-8989-2017; OI Santamarina Rios, Cibran/0000-0002-9810-1816; Bosman, Martine/0000-0002-7290-643X; Riu, Imma/0000-0002-3742-4582; Torres, Jose/0000-0002-1525-1828; Ferrer, Antonio/0000-0003-0532-711X; Tikhomirov, Vladimir/0000-0002-9634-0581; Fullana Torregrosa, Esteban/0000-0003-3082-621X; Delmastro, Marco/0000-0003-2992-3805; Cascella, Michele/0000-0003-2091-2501; Mitsou, Vasiliki/0000-0002-1533-8886; Pina, Joao /0000-0001-8959-5044; Conde Muino, Patricia/0000-0002-9187-7478; Smirnov, Sergei/0000-0002-6778-073X; De, Kaushik/0000-0002-5647-4489; Morozov, Sergey/0000-0002-6748-7277; Karyukhin, Andrey/0000-0001-9087-4315; Tartarelli, Giuseppe Francesco/0000-0002-4244-502X; Gomes, Agostinho/0000-0002-5940-9893; Mendes Saraiva, Joao Gentil/0000-0002-7006-0864; Carvalho, Joao/0000-0002-3015-7821; PAGANIS, STATHES/0000-0002-1950-8993; Gonzalez Millan, Vicente/0000-0001-6014-2586; SANCHIS, ENRIQUE/0000-0002-9689-9131; Maneira, Jose/0000-0002-3222-2738; Mindur, Bartosz/0000-0002-5511-2611; Solodkov, Alexander/0000-0002-2737-8674; Zaitsev, Alexandre/0000-0002-4961-8368; Maio, Amelia/0000-0001-9099-0009 FU European Community, through the ARTEMIS Research Training Network [MRTN-CT-2006-035657]; GRICES; FCT, Portugal FX A very important ingredient of the 2004 ATLAS CTB has been the mechanics of the two calorimeters support and movement. We would like to acknowledge Danilo Giugni, Simone Coelli and Giampiero Braga from INFN Milano for the design, overview of the production and testing of the LAr calorimeter support table. We wish to thank Claude Ferrari, Pierre Gimenez, Yves Bonnet, Denis Gacon and Alain Pinget of CERN EN/MEF group for the continuous mechanical support provided in the CERN SPS North Area during the installation of the setup and the data taking. This work was supported in part by the European Community, through the ARTEMIS Research Training Network (Contract number MRTN-CT-2006-035657) and by GRICES and FCT, Portugal. NR 20 TC 23 Z9 23 U1 1 U2 19 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 134 EP 150 DI 10.1016/j.nima.2010.04.054 PG 17 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100019 ER PT J AU Aguilar-Arevalo, A Aoki, M Blecher, M Bryman, DA Doria, L Gumplinger, P Hussein, A Ito, N Kettell, S Kurchaninov, L Littenberg, L Malbrunot, C Marshall, GM Numao, T Poutissou, R Sher, A Yamada, K AF Aguilar-Arevalo, A. Aoki, M. Blecher, M. Bryman, D. A. Doria, L. Gumplinger, P. Hussein, A. Ito, N. Kettell, S. Kurchaninov, L. Littenberg, L. Malbrunot, C. Marshall, G. M. Numao, T. Poutissou, R. Sher, A. Yamada, K. TI Study of a large NaI(Tl) crystal SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Calorimeter; Scintillation detectors; Photonuclear reactions ID BRANCHING RATIO AB Using a narrow band positron beam, the response of a large high-resolution NaI(Tl) crystal to an incident positron beam was measured. It was found that nuclear interactions cause the appearance of additional peaks in the low energy tail of the deposited energy spectrum. (C) 2010 Elsevier B.V. All rights reserved. C1 [Aguilar-Arevalo, A.; Doria, L.; Gumplinger, P.; Kurchaninov, L.; Marshall, G. M.; Numao, T.; Poutissou, R.; Sher, A.] TRIUMF, Vancouver, BC V6T 2A3, Canada. [Aoki, M.; Ito, N.; Yamada, K.] Osaka Univ, Dept Phys, Osaka 5600043, Japan. [Blecher, M.] Virginia Tech, Dept Phys, Blacksburg, VA 24061 USA. [Bryman, D. A.; Malbrunot, C.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. [Hussein, A.] Univ No British Columbia, Prince George, BC V2N 4Z9, Canada. [Kettell, S.; Littenberg, L.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Doria, L (reprint author), TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada. EM luca@triumf.ca; toshio@triumf.ca OI Littenberg, Laurence/0000-0001-8373-7179; Aguilar-Arevalo, Alexis A./0000-0001-9279-3375; Doria, Luca/0000-0002-7800-6328; MALBRUNOT, Chloe/0000-0001-6193-6601 FU Natural Science and Engineering Council (NSERC); National Research Council of Canada; US National Science Foundation [Phys-0553611] FX We wish to thank M. Kovash (University of Kentucky) for providing us with his gamma-ray spectrum measured with a similar NaI(Tl) crystal, A. Sandorfi (Brookhaven National Laboratory) for useful comments and for arranging the loan of the NaI(Tl) crystal, and S. Chan, C. Lim and N. Khan for the engineering and installation work of the detector. We are also grateful to Brookhaven National Laboratory for providing the NaI(Tl) and CsI crystals. This work was supported by the Natural Science and Engineering Council (NSERC) and the National Research Council of Canada through its contribution to TRIUMF. One of the authors (MB) has been supported by US National Science Foundation grant Phys-0553611. NR 9 TC 10 Z9 10 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 188 EP 191 DI 10.1016/j.nima.2010.05.037 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100025 ER PT J AU Kazakevich, GM Baker, OK Hirshfield, JL Jiang, Y LaPointe, MA Martin, A Shchelkunov, SV Slocum, PL Yakovlev, VP AF Kazakevich, G. M. Baker, O. K. Hirshfield, J. L. Jiang, Y. LaPointe, M. A. Martin, A. Shchelkunov, S. V. Slocum, P. L. Yakovlev, V. P. TI Study of intrapulse phase stability of 34 GHz magnicon for Yale project of weakly interacting sub-eV particle searches SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Weakly interacting particle; Axion; Paraphoton; Magnicon; Phase instability; Heterodyne technique AB The intrapulse phase instability of the 34 GHz magnicon that will be used as a high-power RF source for the Yale project "Weakly interacting sub-eV particle searches" was measured using a heterodyne technique. The measured intrapulse RMS phase deviation averaged over a series of runs is approximately 22.1 +/- 6.8 degrees. This is shown to be due mainly to magnicon modulator ripples. The ripples cause variable beam loading of the magnicon cavities resulting in frequency modulation of the magnicon output signal. Simulation of the beam dynamics (considering variations of the modulator voltage and the magnicon gun current) demonstrates a good agreement with the measured RMS value of the phase deviation for the magnicon steady-state regime. Measured RMS values of the phase deviations for similar parameter sets demonstrate good repeatability from one run to another one. (C) 2010 Elsevier B.V. All rights reserved. C1 [Kazakevich, G. M.; Baker, O. K.; Hirshfield, J. L.; Jiang, Y.; LaPointe, M. A.; Martin, A.; Shchelkunov, S. V.; Slocum, P. L.] Yale Univ, Dept Phys, New Haven, CT 06520 USA. [Hirshfield, J. L.] Omega P Inc, New Haven, CT 06510 USA. [Yakovlev, V. P.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Kazakevich, GM (reprint author), Yale Univ, Dept Phys, POB 208120, New Haven, CT 06520 USA. EM gkazakevitch@yahoo.com RI Jiang, Yong/A-8956-2013 OI Jiang, Yong/0000-0002-5659-6953 FU Office of Naval Research (ONR) [N00014-06-1-1168] FX The work was supported by Office of Naval Research (ONR) under Grant N00014-06-1-1168. NR 17 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 238 EP 241 DI 10.1016/j.nima.2010.05.051 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100031 ER PT J AU Kazkaz, K Foxe, M Bernstein, A Hagmann, C Jovanovic, I Sorensen, P Stoeffl, WS Winant, CD AF Kazkaz, K. Foxe, M. Bernstein, A. Hagmann, C. Jovanovic, I. Sorensen, P. Stoeffl, W. S. Winant, C. D. TI Operation of a 1-liter-volume gaseous argon proportional scintillation counter SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Gas scintillation proportional counter; Nuclear quench factor; Anti-neutrino detector; Argon ID MONTE-CARLO-SIMULATION; ELECTRON-DRIFT; SCATTERING; NITROGEN AB We have built a gas-phase argon ionization detector to measure small nuclear recoil energies (< 10 keVee). In this paper, we describe the detector response to X-ray and gamma calibration sources, including analysis of pulse shapes, software triggers, optimization of gas content, and energy- and position-dependence of the signal. We compare our experimental results against simulation using a 5.9-key X-ray source, as well as higher-energy gamma sources up to 1332 key. We conclude with a description of the detector, DAQ, and software settings optimized for a measurement of the low-energy nuclear quenching factor in gaseous argon. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory in part under Contract W-7405-Eng-48 and in part under Contract DE-AC52-07NA27344. Funded by Lab-wide LDRD. LLNL-JRNL-415990-DRAFT. (C) 2010 Elsevier B.V. All rights reserved. C1 [Kazkaz, K.; Foxe, M.; Bernstein, A.; Hagmann, C.; Sorensen, P.; Stoeffl, W. S.; Winant, C. D.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Foxe, M.; Jovanovic, I.] Purdue Univ, W Lafayette, IN 47907 USA. [Winant, C. D.] Univ Calif San Francisco, San Francisco, CA 94143 USA. RP Kazkaz, K (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM kareem@llnl.gov FU U.S. Department of Homeland Security Domestic Nuclear Detection Office; U.S. Department of Defenses Defense Threat Reduction Agency; U.S. Department of Energy [W-7405-Eng-48, DE-AC52-07NA27344]; Lab-wide LDRD [LLNL-JRNL-415990-DRAFT] FX We would like to thank Dennis Carr and Darrell Carter for their engineering and fabrication support. Thanks also to Sean Paling and Nigel Smith of the ZEPLIN-II collaboration for an explanation of the alpha backgrounds related to their SAES gas purifier. Thank you to Steven Dazeley for a thorough reading before submission for publication. A portion of M. Foxe's research was performed under the Nuclear Forensics Graduate Fellowship Program which is sponsored by the U.S. Department of Homeland Security Domestic Nuclear Detection Office and the U.S. Department of Defenses Defense Threat Reduction Agency.; This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory in part under Contract W-7405-Eng-48 and in part under Contract DE-AC52-07NA27344. Funded by Lab-wide LDRD, LLNL-JRNL-415990-DRAFT. NR 22 TC 6 Z9 6 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 EI 1872-9576 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 267 EP 277 DI 10.1016/j.nima.2010.06.088 PG 11 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100035 ER PT J AU Pavicevic, MK Bosch, F Amthauer, G Anicin, I Boev, B Bruchle, W Djurcic, Z Faestermann, T Henning, WF Jelenkovic, R Pejovic, V AF Pavicevic, M. K. Bosch, F. Amthauer, G. Anicin, I. Boev, B. Bruechle, W. Djurcic, Z. Faestermann, T. Henning, W. F. Jelenkovic, R. Pejovic, V. TI New data for the geochemical determination of the solar pp-neutrino flux by means of lorandite mineral SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Geochemical neutrino detector; Lorandite mineral; pp-neutrino flux; Erosion rate ID STATE BETA-DECAY; ATOMS; HELIOSEISMOLOGY; ALLCHAR; RATES AB LOREX, the acronym of LORandite EXperiment, is the only long-time solar neutrino experiment still actively pursued. It addresses the long-time detection of the solar neutrino flux with the thallium-bearing mineral lorandite, TIAsS(2) at the mine of Allchar, FYRMacedonia, via the neutrino-capture reaction (205)Ti + v(e) -> (205)Pb+e(-). The final step of LOREX would be the extraction of lorandite samples and the quantitative determination of the ratio of (205)Pb/(205)Ti atoms providing the product of solar neutrino flux and neutrino-capture cross-section, integrated over the age of lorandite (about 4.3 x 10(6) y). There is an unprecedented low threshold of only 50 keV for solar pp-neutrinos, to be compared with 232 keV of the GALLEX and SAGE experiments. Moreover, LOREX would be unique in view of providing the mean luminosity of the sun over the last 4.3 million years. This paper presents new data providing an accurate geological age of mineralization at Allchar, and in particular a lower limit of 36 m/10(6) y for the erosion rate, based on Accelerator Mass Spectrometry of (26)Al and (53)Mn samples taken from the mine of Allchar. This data allow first realistic conclusions on the feasibility of the LOREX project. The amount of (205)Pb due to fast cosmic rays (e.g. muons), strongly depends on the depth at which the mineral existed from the time of its formation to the present day. For the mineral mined at the present-day depth this contribution then depends upon the average erosion rate at this particular location. A reliable determination of the erosion rate is, therefore, indispensable for a proper estimate of the background of (205)Pb induced by cosmic radiation. Provided that this lower limit of 36 m/10(6) y can be corroborated by the mandatory measurement of additional probes, it is expected to reach a signal-to-background ratio equal or better than one. Finally, it is discussed how to get the still unknown capture probability of solar pp-neutrinos from (205)Ti into (205)Pb, in particular into its first excited state at E*=2.3 keV. (C) 2010 Elsevier B.V. All rights reserved. C1 [Bosch, F.; Bruechle, W.] Gesell Schwerionenforsch GSI, D-64291 Darmstadt, Germany. [Pavicevic, M. K.; Amthauer, G.] Salzburg Univ, Div Mat Sci & Phys, Dept Mineral, A-5020 Salzburg, Austria. [Anicin, I.; Pejovic, V.] Univ Belgrade, Fac Phys, Belgrade 1100, Serbia. [Boev, B.] Univ Stip, Fac Min & Geol, Stip 92000, Fyrmacedonia, Macedonia. [Djurcic, Z.; Henning, W. F.] Argonne Natl Lab, Argonne, IL 60439 USA. [Faestermann, T.] Tech Univ Munich, Phys Dept E12, D-85748 Munich, Germany. [Jelenkovic, R.] Univ Belgrade, Fac Min & Geol, Belgrade 11000, Serbia. RP Bosch, F (reprint author), Gesell Schwerionenforsch GSI, Planckstr 1, D-64291 Darmstadt, Germany. EM f.bosch@gsi.de OI Faestermann, Thomas/0000-0002-6603-8787 FU FWF-Wien [P 20594] FX We thank the FWF-Wien for supporting this project by Grant P 20594. We appreciate the continuous support of the GSI Helmholtzzentrum fur Schwerionenforschung from two decades ago until today. In particular we would like to thank B. Franzke, P. Spaedtke and K. Tinschert from GSI for their help and many fruitful discussions. We are very much indebted to W. Todt from Max Planck Institute for Chemistry at Mainz for his work in the preparation of 202Pb samples for the purpose of AMS at the GSI accelerators, to T. Stafilov from the University of Skopje for his analysis of trace elements in pyrite, and to G. Tippelt from the University of Salzburg for the X-ray diffraction measurement of several quartz probes. We appreciate the many refreshing discussions we had with P. Kiente. M.K.P. is very thankful to the University of Salzburg for its hospitality and financial support. Z.D. is thankful to G. Keefer for useful discussion and help related to cross-check of calculation of the solar neutrino flux suppression. NR 32 TC 4 Z9 4 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 278 EP 285 DI 10.1016/j.nima.2010.06.090 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100036 ER PT J AU Lesher, SR Phair, L Bernstein, LA Bleuel, DL Burke, JT Church, JA Fallon, P Gibelin, J Scielzo, ND Wiedeking, M AF Lesher, S. R. Phair, L. Bernstein, L. A. Bleuel, D. L. Burke, J. T. Church, J. A. Fallon, P. Gibelin, J. Scielzo, N. D. Wiedeking, M. TI STARS/LiBerACE: Segmented silicon and high-purity germanium detector arrays for low-energy nuclear reaction and structure studies SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Charged-particle detection; Silicon-detector telescope; Gamma-ray array; Reaction studies ID CLOVER AB The Silicon Telescope Array for Reaction Studies (STARS) consists of large-area annular double-sided silicon detectors for charged-particle identification. The Livermore Berkeley Array for Collaborative Experiments (LiBerACE) is an array of six Compton-suppressed high-purity germanium Clover detectors for efficient detection of gamma-rays. These detector arrays are versatile tools for studies of neutron-induced reaction cross-sections, fission, light neutron-rich nuclei, and other low-energy nuclear physics topics through transfer, fusion, incomplete-fusion, and inelastic-scattering reactions. The STARS and LiBerACE arrays and typical experimental configurations are described in detail. (C) 2010 Elsevier B.V. All rights reserved. C1 [Phair, L.; Bleuel, D. L.; Fallon, P.; Gibelin, J.; Wiedeking, M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Lesher, S. R.; Bernstein, L. A.; Bleuel, D. L.; Burke, J. T.; Church, J. A.; Scielzo, N. D.; Wiedeking, M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Lesher, S. R.] Univ Wisconsin, Dept Phys, La Crosse, WI 54601 USA. RP Phair, L (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM LWPhair@lbl.gov; scielzo1@llnl.gov RI Burke, Jason/I-4580-2012; OI GIBELIN, Julien/0000-0001-6751-3714 FU US Department of Energy [W-7405-Eng-48, DE-AC52-07NA27344]; Lawrence Berkeley National Laboratory [DE-AC02-05CH11231] FX This work was performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory in part under Contract W-7405-Eng-48 and in part under Contract DE-AC52-07NA27344 and by Lawrence Berkeley National Laboratory under Contract DE-AC02-05CH11231. NR 26 TC 31 Z9 31 U1 1 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 286 EP 291 DI 10.1016/j.nima.2010.04.017 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100037 ER PT J AU Budick, B Beavis, D Chasman, C AF Budick, B. Beavis, D. Chasman, C. TI Large acceptance forward Cherenkov detector for the BRAHMS experiment at RHIC SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Cheren kov detectors AB A multi-element detector based on Cherenkov radiation in plastic and on photomultiplier tubes has been constructed that is particularly useful in collider experiments. The detector covers the pseudorapidity interval 3.23 < eta < 5.25 with large acceptance for the products of proton-proton and heavy ion collisions. The detector's primary purposes are determining the vertex of the interaction, providing a minimum bias trigger, finding the start time for time of flight (and other timing applications), and monitoring the luminosity. Monte Carlo simulations describe the pulse height response of the detector well, as does an analytic expression that has been developed. The detector performed well in the RHIC experiment BRAHMS. (C) 2010 Elsevier B.V. All rights reserved. C1 [Budick, B.] NYU, New York, NY 10003 USA. [Beavis, D.; Chasman, C.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Budick, B (reprint author), NYU, 550 1st Ave, New York, NY 10003 USA. EM bb2@nyu.edu; beavis@bnl.gov; chasman@bnl.gov FU Division of Nuclear Physics of the U.S. Department of Energy [DE-AC02-98-CH10886, DE-FG03-96-ER40981, FG03-93-ER40773, FG02-99-ER41121]; Collider-Accelerator Division FX We are grateful to the members of the BRAHMS collaboration whose assistance made this work possible. Special thanks are owed to J. H. Lee, F. Videbaek, and E. Baker. This work was supported by the Division of Nuclear Physics of the U.S. Department of Energy under Grant numbers DE-AC02-98-CH10886 and DE-FG03-96-ER40981, FG03-93-ER40773, FG02-99-ER41121. We also wish to thank the staff of the Collider-Accelerator Division for their dedicated effort and support. NR 3 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 295 EP 301 DI 10.1016/j.nima.2010.04.024 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100039 ER PT J AU Polack, JK Hirt, M Sturgess, J Sferrazza, ND Bolotnikov, AE Babalola, S Camarda, GS Cui, Y Egarievwe, SU Fochuk, PM Gul, R Hossain, A Kim, K Kopach, OV Marchini, L Yang, G Xu, L James, RB AF Polack, J. K. Hirt, M. Sturgess, J. Sferrazza, N. D. Bolotnikov, A. E. Babalola, S. Camarda, G. S. Cui, Y. Egarievwe, S. U. Fochuk, P. M. Gul, R. Hossain, A. Kim, K. Kopach, O. V. Marchini, L. Yang, G. Xu, L. James, R. B. TI Variation of electric shielding on virtual Frisch-grid detectors SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE CdZnTe; Virtual Frisch-grid detectors; Gamma-ray detectors ID CDZNTE DETECTORS; PERFORMANCE AB Because of the low mobility of holes, CdZnTe (CZT) detectors operate as electron-transport-only type devices whose particular geometrical parameters and contacts configurations are specially chosen to minimize the contribution of uncollected holes into the output signal amplitudes (induction effect). Several detector configurations have been proposed to address this problem. One of them employs a large geometrical aspect ratio, parallelepiped-shaped crystal with two planar contacts on the top and bottom surfaces (anode and cathode) and an additional shielding electrode placed on a crystal's side to create the virtual Frisch-grid effect. We studied the effect of the shielding electrode length, as well as its location, on the responses of 6 x 6 x 15 mm(3) virtual Frisch-grid detectors. We found that the length of the shielding electrode placed next to the anode can be reduced to 5 mm with no adverse effects on the device performance. Meanwhile, this allows for charge loss correction by reading the cathode signals. Published by Elsevier B.V. C1 [Polack, J. K.; Hirt, M.; Sturgess, J.; Sferrazza, N. D.; Bolotnikov, A. E.; Babalola, S.; Camarda, G. S.; Cui, Y.; Gul, R.; Hossain, A.; Kim, K.; Marchini, L.; Yang, G.; Xu, L.; James, R. B.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Polack, J. K.; Hirt, M.; Sturgess, J.] Univ Michigan, Ann Arbor, MI 48109 USA. [Babalola, S.] Fisk Univ, Nashville, TN USA. [Egarievwe, S. U.] Alabama A&M Univ, Normal, AL 35762 USA. [Fochuk, P. M.; Kopach, O. V.] Chernivtsi Natl Univ, Chernovtsy, Ukraine. [Marchini, L.] IMEM CNR, Parma, Italy. RP Bolotnikov, AE (reprint author), Brookhaven Natl Lab, 197-D, Upton, NY 11973 USA. EM bolotnik@bnl.gov RI Yang, Ge/G-1354-2011; Fochuk, Petro/D-9409-2016; Kopach, Oleh/C-3993-2017 OI Fochuk, Petro/0000-0002-4149-4882; Kopach, Oleh/0000-0002-1513-5261 FU US Department of Energy, Office of Nonproliferation Research and Development [NA-22]; US Department of Energy [DE-AC02-98CH1-886] FX This work was supported by US Department of Energy, Office of Nonproliferation Research and Development, NA-22. The manuscript has been authored by Brookhaven Science Associates, LLC under Contract no. DE-AC02-98CH1-886 with the US Department of Energy. The United States Government retains, and the publisher, by accepting the article for publication, acknowledges, a world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for the United States Government purposes. NR 8 TC 19 Z9 19 U1 1 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP PY 2010 VL 621 IS 1-3 BP 424 EP 430 DI 10.1016/j.nima.2010.05.035 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 641FB UT WOS:000281109100060 ER PT J AU Renk, TJ Sridharan, K Harrington, SP Johnson, AK Lahoda, E AF Renk, T. J. Sridharan, K. Harrington, S. P. Johnson, A. K. Lahoda, E. TI Incorporation of gadolinium and boron into Zirconium alloy: Surface alloying of immiscible materials using an intense pulsed ion beam SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE Intense ion beam; Surface alloying; Surface modification; Metastable phase; Integral fuel burnable absorbers ID SOLUTE DIFFUSION AB We investigate the potential for incorporation by surface alloying of two elements, gadolinium (Gd) and boron (B), into Zr-alloy substrates, by the application of an intense ion beam pulse to a conventionally pre-applied Gd or B thin film coating to the substrate. The beam is produced by the Repetitive High Energy Pulsed Power-1 (RHEPP-1) ion beam facility at Sandia National Laboratories Surface alloying is desirable in this case for two reasons (1) conventional alloying is not possible because both Gd and B have negligible solubility in Zr at room temperature, and (2) a conventionally applied coating without surface alloying may be expected to delaminate in the harsh end-environment where the elements are used (e g fission reactors). While surface alloying has been a topic of investigation both by the present and prior researchers, the goal of the present work is the detailed study incorporating heat flow simulations and a full complement of materials analysis tools to characterize surface alloying of Zr-alloy substrates with Gd and B. Use of code simulations is essential for predicting appropriate film thickness and ion beam treatment fluences, which are specific to a given film-substrate system. Characterization after ion beam surface treatments confirmed successful alloying of both Gd and B by significant extension of their solid solubility in Zr-alloy substrates. While Gd surface alloying of Zr-alloys resulted in unacceptable oxidation in thermal and environmental conditions mimicking a nuclear reactor environment, B surface alloying resulted in acceptable corrosion resistance comparable to the as-received Zr-alloys. (C) 2010 Elsevier By. All rights reserved C1 [Renk, T. J.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Sridharan, K.; Harrington, S. P.; Johnson, A. K.] Univ Wisconsin, Madison, WI USA. [Lahoda, E.] Westinghouse Elect Corp, Pittsburgh, PA USA. RP Renk, TJ (reprint author), Sandia Natl Labs, MS 1182,POB 5800, Albuquerque, NM 87185 USA. FU Department of Energy Nuclear Energy Research Initiatives (NERI) [DE-FG07-02SF22617] FX The authors wish to thank Gerard A. Torres for technical assistance in the RHEPP-1 ion beam experiments. Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. This research was supported under the Department of Energy Nuclear Energy Research Initiatives (NERI) program, Grant No. DE-FG07-02SF22617. NR 10 TC 2 Z9 2 U1 4 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD SEP PY 2010 VL 268 IS 17-18 BP 2666 EP 2678 DI 10.1016/j.nimb.2010.05.101 PG 13 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 645XG UT WOS:000281498900017 ER PT J AU Jeon, B Asta, M Valone, SM Gronbech-Jensen, N AF Jeon, Byoungseon Asta, Mark Valone, Steven M. Gronbech-Jensen, Niels TI Simulation of ion-track ranges in uranium oxide SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE REED-MD; Ion-track range; Molecular dynamics; Nuclear fuel materials; Uranium oxide ID MOLECULAR-DYNAMICS SCHEME; STOPPING-POWER MODEL; IMPLANTATION; PROFILES; SILICON AB Direct comparisons between statistically sound simulations of ion-tracks and published experimental measurements of range densities of iodine implants in uranium dioxide have been made with Implant energies in the range of 100-800 keV Our simulations are conducted with REED-MD (Rare Event Enhanced Domain-following Molecular Dynamics) in order to account for the materials structure in both single crystalline and polycrystalline samples We find excellent agreement between REED-MD results and experiments for polycrystalline target materials. (C) 2010 Elsevier B.V. All rights reserved C1 [Jeon, Byoungseon; Gronbech-Jensen, Niels] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. [Asta, Mark] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. [Asta, Mark] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. [Valone, Steven M.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87544 USA. RP Jeon, B (reprint author), Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. RI Jeon, ByoungSeon/D-2281-2012 FU US Department of Energy Nuclear Energy Research Initiative for Consortia (NERI-C) [DR-FG07-071D14893]; Materials Design Institute at Los Alamos National Laboratory [75782-001-09]; Los Alamos National Laboratory [75287-001-10] FX This work was supported by the US Department of Energy Nuclear Energy Research Initiative for Consortia (NERI-C) contract number DR-FG07-071D14893, by the Materials Design Institute at Los Alamos National Laboratory (subcontract number 75782-001-09), and by Los Alamos National Laboratory contract No. 75287-001-10. NR 15 TC 5 Z9 5 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD SEP PY 2010 VL 268 IS 17-18 BP 2688 EP 2693 DI 10.1016/j.nimb.2010.06.004 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 645XG UT WOS:000281498900020 ER PT J AU Liang, F Zhang, GL Xiao, XH Cai, ZH Lai, B Hwu, Y Yan, CH Xu, JA Li, YL Tan, MG Zhang, CF Li, Y AF Liang, Feng Zhang, Guilin Xiao, Xianghui Cai, Zhonghou Lai, Barry Hwu, Yeukuang Yan, Chonghuai Xu, Jian Li, Yulan Tan, Mingguang Zhang, Chuanfu Li, Yan TI Toxicological study of injuries of rat's hippocampus after lead poisoning by synchrotron microradiography and elemental mapping SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE Hippocampus; Lead; Phase contrast X-ray imaging; Micro-beam X-ray fluorescence; Synchrotron radiation ID DENTATE GYRUS; IN-VIVO; RADIATION; APOPTOSIS; NEUROTOXICITY; DISEASE; AEROSOL; TISSUE; CELLS AB The hippocampus, a major component of the brain, is one of the target nervous organs in lead poisoning In this work, a rat's hippocampal injury caused by lead was studied. The lead concentrations in blood, bone and hippocampus collected from rats subject to lead poisoning were quantified by Inductively Coupled Plasma Mass Spectrometry while morphological information and elemental distributions in the hippocampus were obtained with synchrotron radiation X-ray phase contrast imaging and synchrotron radiation micro-beam X-ray fluorescence, respectively For comparison, identical characterization of the specimens from the rats in the control group was done in parallel Results show that the ratios between the lead content in the treated group and that in the control group of the hippocampus, bone, and blood are about 2 66, 236, and 39 6, respectively Analysis also revealed that some health elements such as S. K. Cl and P increase in the regions with high lead content in the treated hippocampus Morphological differences between the normal and lead-exposed hippocampus specimens in some local areas were observed. Explicitly, the structure of the lead-exposed hippocampus was tortuous and irregular, and the density of the neurons in the Dentate Gyrus was significantly lower than that from the control group The study shows that the synchrotron radiation methods are very powerful for investigating structural injury caused by heavy metals in the nervous system. (C) 2010 Elsevier B V All rights reserved C1 [Liang, Feng; Zhang, Guilin; Li, Yulan; Tan, Mingguang; Zhang, Chuanfu; Li, Yan] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. [Xiao, Xianghui; Cai, Zhonghou; Lai, Barry] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. [Hwu, Yeukuang] Acad Sinica, Inst Phys, Taipei, Taiwan. [Yan, Chonghuai; Xu, Jian] Shanghai Jiao Tong Univ, Xinhua Hosp, Sch Med, Shanghai Key Lab Childrens Environm Hlth, Shanghai 200092, Peoples R China. RP Zhang, GL (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. FU Chinese Academy of Sciences [KJCX3.SYW.N3]; National Natural Science Foundation of China [10675159]; Shanghai Natural Science Foundation [09ZR1438200]; US Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]; Public Science and Technology Program of Shenzhen [SY200806270 164A] FX This study was supported by Major Project of Knowledge Innovation Program of Chinese Academy of Sciences (No. KJCX3.SYW.N3), National Natural Science Foundation of China (No. 10675159), Shanghai Natural Science Foundation(No 09ZR1438200) and Public Science and Technology Program of Shenzhen (No SY200806270 164A) 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 32 TC 3 Z9 3 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD SEP PY 2010 VL 268 IS 17-18 BP 2840 EP 2845 DI 10.1016/j.nimb.2010.07.001 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 645XG UT WOS:000281498900047 ER PT J AU Armour, W Allton, CR Leinweber, DB Thomas, AW Young, RD AF Armour, W. Allton, C. R. Leinweber, D. B. Thomas, A. W. Young, R. D. TI An analysis of the nucleon spectrum from lattice partially-quenched QCD SO NUCLEAR PHYSICS A LA English DT Article DE Nucleon spectrum; Chiral perturbation theory; Lattice gauge theory ID CHIRAL PERTURBATION-THEORY; BARYON MASSES; EXTRAPOLATION; REGIME; MESON AB The chiral extrapolation of the nucleon mass, M, is investigated using data coming from 2-flavour partially-quenched lattice simulations. A large sample of lattice results from the CP-PACS Collaboration is analysed using the leading one-loop corrections, with explicit corrections for finite lattice spacing artifacts. The extrapolation is studied using finite-range regularised chiral perturbation theory. The analysis also provides a quantitative estimate of the leading finite volume corrections. It is found that the discretisation, finite volume and partial quenching effects can all be very well described in this framework, producing an extrapolated value of M-n in agreement with experiment. Furthermore, determinations of the low energy constants of the nucleon mass's chiral expansion are in agreement with previous methods, but with significantly reduced errors. This procedure is also compared with extrapolations based on polynomial forms, where the results are less encouraging. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved. C1 [Armour, W.; Allton, C. R.] Swansea Univ, Dept Phys, Swansea SA2 8PP, W Glam, Wales. [Leinweber, D. B.] Univ Adelaide, Sch Chem & Phys, Special Res Ctr Subatom Struct Matter CSSM, Adelaide, SA 5005, Australia. [Thomas, A. W.] Jefferson Lab, Newport News, VA 23606 USA. [Thomas, A. W.] Coll William & Mary, Williamsburg, VA 23187 USA. [Young, R. D.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Allton, CR (reprint author), Swansea Univ, Dept Phys, Swansea SA2 8PP, W Glam, Wales. EM c.allton@swan.ac.uk RI Thomas, Anthony/G-4194-2012; Armour, Wes/G-6883-2012; Young, Ross/H-8207-2012; Leinweber, Derek/J-6705-2013; OI Thomas, Anthony/0000-0003-0026-499X; Armour, Wes/0000-0003-1756-3064; Leinweber, Derek/0000-0002-4745-6027; Allton, Christopher/0000-0003-0795-124X FU Australian Research Council; US DOE [DE-AC05-06OR23177, DE-AC02-06CH11357] FX C.R.A. and W.A. would like to thank the CSSM for their support and kind hospitality. W.A. would like to thank PPARC for travel support. The authors would like to thank Stewart Wright for helpful comments. This work is supported by the Australian Research Council and by US DOE Contract No. DE-AC05-06OR23177, under which Jefferson Science Associates, LLC operates Jefferson Laboratory, and DE-AC02-06CH11357, under which UChicago Argonne, LLC operates Argonne National Laboratory. NR 38 TC 5 Z9 5 U1 0 U2 1 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 SEP 1 PY 2010 VL 840 BP 97 EP 119 DI 10.1016/j.nuclphysa.2010.03.012 PG 23 WC Physics, Nuclear SC Physics GA 608SU UT WOS:000278607100005 ER PT J AU Fratoni, M Greenspan, E AF Fratoni, Massimiliano Greenspan, Ehud TI Equilibrium Core Composition Search Methodologies for Pebble Bed Reactors SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article AB The capability to perform depletion analysis of pebble bed reactors has been traditionally limited to a few dedicated codes that are designed for helium-cooled reactors, rely on pregenerated problem-dependent group cross sections, and have limited flexibility in the materials and in the geometries they can model. This paper presents a newly developed tool to search for pebble bed reactor core equilibrium composition and calculate its neutronic characteristics. It uses MCNP for transport calculations and ORIGEN2 for depletion calculations and can generate effective one-group cross sections "on-the-fly" as pebbles move through the core using point-energy cross sections. This tool can be used for any coolant type including liquid salt, can model complex geometries, and can account for any level of heterogeneity. Also developed are two simplified methodologies that are based on unit-cell analysis and can considerably reduce the required computational time; they are useful for parametric studies. C1 [Fratoni, Massimiliano; Greenspan, Ehud] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. RP Fratoni, M (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. EM fratoni1@llnl.gov RI Fratoni, Massimiliano/F-9746-2011; Fratoni, Massimiliano/M-8323-2015 OI Fratoni, Massimiliano/0000-0003-0452-0508 FU U.S. Department of Energy Office of Nuclear Energy, Nuclear Energy Research Initiative [DE-FC07-05ID14669] FX This work was supported by the U.S. Department of Energy Office of Nuclear Energy, Nuclear Energy Research Initiative grant DE-FC07-05ID14669. Support provided by P. F. Peterson is highly appreciated. NR 10 TC 3 Z9 3 U1 0 U2 5 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD SEP PY 2010 VL 166 IS 1 BP 1 EP 16 PG 16 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 646UU UT WOS:000281569400001 ER PT J AU Warsa, JS Densmore, JD Prinja, AK Morel, JE AF Warsa, James S. Densmore, Jeffery D. Prinja, Anil K. Morel, Jim E. TI Manufactured Solutions in the Thick Diffusion Limit SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID MEAN FREE PATHS; SPATIAL DISCRETIZATION SCHEME; NUMERICAL TRANSPORT PROBLEMS; ASYMPTOTIC SOLUTIONS; OPTICALLY THICK; GEOMETRY; REGIMES AB Spatially analytic S(N) solutions currently exist only under very limited circumstances. For cases in which analytical solutions may not be available, one can turn to manufactured solutions to test the properties of spatial transport discretization schemes. In particular, we show it is possible to use a manufactured solution to conduct such tests in the thick diffusion limit, even though the computed solution is independent of the problem characteristics. We show that a diffusion limit scaling with a manufactured solution source term results in an expression that is valid in the diffusion limit, though it is not of the standard form used in asymptotic diffusion limit analysis. We then derive a necessary, but not sufficient, condition that must be satisfied in order for a spatial discretization of the transport equation to preserve the thick diffusion limit. This condition is stated in terms of the difference between a numerically computed scalar flux solution compared against a known scalar flux. For a sufficiently diffusive problem and optically thick mesh cells, the necessary condition states that if a spatial discretization of the SN equations has the thick diffusion limit, the norm of the difference in the two solutions must converge to zero with decreasing mesh cell spacing. Based on the first observation that the diffusion limit holds for a manufactured solution source term, the known solution can conveniently be taken to he a manufactured solution in a mesh refinement numerical experiment to check whether a spatial discretization satisfies this condition. We present computational examples that verify our analysis and illustrate the expediency of this approach. C1 [Warsa, James S.; Densmore, Jeffery D.] Los Alamos Natl Lab, Transport Methods Sect, Computat Phys & Methods Grp, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA. [Prinja, Anil K.] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. [Morel, Jim E.] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA. RP Warsa, JS (reprint author), Los Alamos Natl Lab, Transport Methods Sect, Computat Phys & Methods Grp, Comp Computat & Stat Sci Div, POB 1663, Los Alamos, NM 87545 USA. EM warsa@lanl.gov FU U.S. Department of Energy [DE-AC52-06NA25396] FX This information has been authored by an employee or employees of the Los Alamos National Security, LLC, operator of the Los Alamos National Laboratory under contract DE-AC52-06NA25396 with the U.S. Department of Energy. NR 16 TC 4 Z9 4 U1 1 U2 1 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD SEP PY 2010 VL 166 IS 1 BP 36 EP 47 PG 12 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 646UU UT WOS:000281569400003 ER PT J AU Ramsey, SD Axford, RA AF Ramsey, Scott D. Axford, Roy A. TI A Sensitivity Analysis of Nuclear Assembly Extinction Probabilities: Application to Reevaluated Fission Multiplicity Data SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID PROMPT NEUTRONS; EMISSION; REACTOR AB We implement direct and approximate local sensitivity analysis techniques within the context of stochastic point kinetics neglecting delayed neutrons and external neutron sources. After reviewing the derivation of certain probabilities that the neutron population in a nuclear assembly is exactly zero [probabilities of extinction (POEs)], we consider their dependence on physical data. We subsequently focus on fission number distribution dependence and draw comparisons between two different data sets. As various POEs are dependent upon these data through the solution of a nonlinear ordinary differential equation, local sensitivity analysis provides a useful means through which to assess the effects of data reevaluation. We first conduct this analysis generally (though approximately) using Gateaux-derivative methodology. Following the generalized developments, exact and approximate results for U-235 are presented with a discussion concerning important consequences related to criticality safety. C1 [Ramsey, Scott D.] Los Alamos Natl Lab, Div Appl Phys, Los Alamos, NM 87545 USA. [Axford, Roy A.] Univ Illinois, Dept Nucl Plasma & Radiol Engn, Urbana, IL 61801 USA. RP Ramsey, SD (reprint author), Los Alamos Natl Lab, Div Appl Phys, MS F644, Los Alamos, NM 87545 USA. EM ramsey@lanl.gov FU DOE Office of Nuclear Energy, Science, and Technology; DOE by Los Alamos National Security, LLC, at Los Alamos National Laboratory (LANL) [DE-AC52-06NA25396] FX This work was performed under appointment to the U.S. Department of Energy (DOE) Nuclear Engineering and Health Physics Fellowship Program sponsored by the DOE Office of Nuclear Energy, Science, and Technology, and under the auspices of the DOE by Los Alamos National Security, LLC, at Los Alamos National Laboratory (LANL) under contract DE-AC52-06NA25396. The authors thank J. S. Brock, T. R. Hill, and G. J. Hutchens of LANL for valuable insight on these topics. NR 28 TC 1 Z9 1 U1 0 U2 2 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 EI 1943-748X J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD SEP PY 2010 VL 166 IS 1 BP 48 EP 57 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 646UU UT WOS:000281569400004 ER PT J AU Ramsey, SD Axford, RA Hutchens, GJ AF Ramsey, Scott D. Axford, Roy A. Hutchens, Gregory J. TI A Semianalytical Analysis of Transient Supercritical Assembly Extinction Probabilities SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID SOURCE REACTOR STARTUPS; NEUTRON-TRANSPORT; LOW-POWER; KINETICS; EQUATIONS AB Stochastic point kinetics neglecting delayed neutrons has been subject to rigorous analysis in the years since its introduction. Many approximate solutions appearing within this context are based upon the "quadratic approximation," where fission multiplicity is truncated at two. In this technical note we review the quadratic approximation within the context of a stochastic, space-independent, one-energy-group model neglecting delayed neutrons and its generalization to higher-order approximations in transient and stationary systems. This generalization results in the probability of a zero neutron population for a source-free system being governed by transcendental and polynomial algebraic equations in the transient and infinite time limit cases, respectively. For (239)Pu, we solve the transcendental equation over a wider range of prompt multiplication factors and times than has been previously accomplished. We also reproduce and generalize associated solutions of the polynomial algebraic equation. In both cases, solutions are computed for successive generalizations of the quadratic approximation to higher-order maximum fission multiplicity. C1 [Ramsey, Scott D.; Hutchens, Gregory J.] Los Alamos Natl Lab, Div Appl Phys, Los Alamos, NM 87545 USA. [Axford, Roy A.] Univ Illinois, Dept Nucl Plasma & Radiol Engn, Urbana, IL 61801 USA. RP Ramsey, SD (reprint author), Los Alamos Natl Lab, Div Appl Phys, MS F644, Los Alamos, NM 87545 USA. EM ramsey@lanl.gov FU DOE by Los Alamos National Security, LLC, at Los Alamos National Laboratory (LANL) [DE-AC52-06NA25396]; DOE Office of Nuclear Energy, Science, and Technology FX This work was performed under appointment to the U.S. Department of Energy (DOE) Nuclear Engineering and Health Physics Fellowship Program sponsored by the DOE Office of Nuclear Energy, Science, and Technology, and under the auspices of the DOE by Los Alamos National Security, LLC, at Los Alamos National Laboratory (LANL) under contract DE-AC52-06NA25396. The authors thank T. R. Hill of LANL for many valuable insights on these topics. NR 36 TC 1 Z9 1 U1 0 U2 1 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD SEP PY 2010 VL 166 IS 1 BP 73 EP 81 PG 9 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 646UU UT WOS:000281569400006 ER PT J AU Herrmann, SD Li, SX AF Herrmann, S. D. Li, S. X. TI SEPARATION AND RECOVERY OF URANIUM METAL FROM SPENT LIGHT WATER REACTOR FUEL VIA ELECTROLYTIC REDUCTION AND ELECTROREFINING SO NUCLEAR TECHNOLOGY LA English DT Article DE electrolytic reduction; electrorefining; spent light water reactor fuel ID LIQUID CADMIUM CATHODE; ELECTROCHEMICAL REDUCTION; OXIDES; PRODUCTS AB A series of bench-scale experiments was performed in a hot cell at Idaho National Laboratory to demonstrate the separation and recovery of uranium metal from spent light water reactor (LWR) fuel. The experiments involved crushing spent LWR fuel to particulate and separating it from its cladding. Oxide fuel particulate was then converted to metal in a series of six electrolytic reduction runs performed in succession with a single salt loading of molten LiCl-1 wt% Li(2)O at 650 degrees C. Analysis of salt samples following the series of electrolytic reduction runs identified the partitioning of select fission products from the spent fuel to the molten salt electrolyte. The extent of metal oxide conversion in the posttest fuel was also quantified, including a 99.7% conversion of uranium oxide to metal. Uranium metal was then separated from the reduced LWR fuel in a series of six electrorefining runs performed in succession with a single salt loading of molten LiCl-KCl-UCl(3) at 500 degrees C. Analysis of salt samples following the series of electro refining runs identified additional partitioning of fission products into the molten salt electrolyte. Analyses of the separated uranium metal were performed, and its decontamination factors were determined. C1 [Herrmann, S. D.; Li, S. X.] Idaho Natl Lab, Pyroproc Technol Dept, Idaho Falls, ID 83415 USA. RP Herrmann, SD (reprint author), Idaho Natl Lab, Pyroproc Technol Dept, Idaho Falls, ID 83415 USA. EM steven.herrmann@inl.gov FU U.S. Department of Energy (DOE), Office of Nuclear Energy, under DOE Idaho Operations Office [DE-AC07-05ID14517] FX The authors acknowledge the contribution of HFEF operators and analytical laboratory personnel to this testing program. This work was supported by the U.S. Department of Energy (DOE), Office of Nuclear Energy, under DOE Idaho Operations Office contract DE-AC07-05ID14517. NR 11 TC 23 Z9 23 U1 3 U2 12 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 2010 VL 171 IS 3 SI SI BP 247 EP 265 PG 19 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 643JK UT WOS:000281292000003 ER PT J AU Hoover, RO Phongikaroon, S Simpson, MF Li, SX Yoo, TS AF Hoover, Robert O. Phongikaroon, Supathorn Simpson, Michael F. Li, Shelly X. Yoo, Tae-Sic TI DEVELOPMENT OF COMPUTATIONAL MODELS FOR THE MARK-IV ELECTROREFINER-EFFECT OF URANIUM, PLUTONIUM, AND ZIRCONIUM DISSOLUTION AT THE FUEL BASKET-SALT INTERFACE SO NUCLEAR TECHNOLOGY LA English DT Article DE electrochemical processing; electrorefiner; anodic dissolution ID LIQUID CADMIUM; MOLTEN; ACTINIDE; BEHAVIOR; REACTOR; PU AB The electrochemical processing of spent metallic nuclear fuel has been demonstrated by and is currently in operation at the Idaho National Laboratory (INL). At the heart of this process is the Mark-IV electrorefiner (ER). This process involves the anodic dissolution of spent nuclear fuel into a molten salt electrolyte along with a simultaneous deposition of pure uranium on a solid cathode. This allows the fission products to be separated from the fuel and processed into an engineered waste form. A one-dimensional model of the Mark-IV ER has begun to be developed. The computations thus far have modeled the dissolution of the spent nuclear fuel at the anode taking into account uranium (U(3+)), plutonium (Pu(3+)), and zirconium (Zr(4+)). Uranium and plutonium are the two most important elements in the system, whereas zirconium is the most active of the noble metals. The model shows that plutonium is quickly exhausted from the anode, followed by dissolution of primarily uranium, along with small amounts of zirconium. The total anode potential as calculated by the model has been compared to experimental data sets provided by INL. The anode potential has been shown to match the experimental values quite well with root-mean-square (rms) values of 2.27 and 3.83% for two different data sets, where rms values closer to zero denote better fit. C1 [Hoover, Robert O.; Phongikaroon, Supathorn] Univ Idaho, Dept Chem Engn, Nucl Engn Program, Idaho Falls, ID 83402 USA. [Simpson, Michael F.; Li, Shelly X.; Yoo, Tae-Sic] Idaho Natl Lab, Pyroproc Technol Dept, Idaho Falls, ID 83415 USA. RP Hoover, RO (reprint author), Univ Idaho, Dept Chem Engn, Nucl Engn Program, 1776 Sci Ctr Dr, Idaho Falls, ID 83402 USA. EM supathor@uidaho.edu FU U.S./ROK I-NERI [2007-006-K] FX This project is supported by U.S./ROK I-NERI 2005-2007 project 2007-006-K under the Advanced Fuel Cycle Research and Development work package. NR 20 TC 14 Z9 14 U1 1 U2 5 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 2010 VL 171 IS 3 SI SI BP 276 EP 284 PG 9 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 643JK UT WOS:000281292000005 ER PT J AU Li, SX Herrmann, SD Simpson, MF AF Li, Shelly X. Herrmann, Steven D. Simpson, Michael F. TI ELECTROCHEMICAL ANALYSIS OF ACTINIDES AND RARE EARTH CONSTITUENTS IN LIQUID CADMIUM CATHODE PRODUCT FROM SPENT FUEL ELECTROREFINING SO NUCLEAR TECHNOLOGY LA English DT Article DE actinide recovery; liquid cadmium cathode; separation efficiency ID EQUILIBRIUM DISTRIBUTION; PHASE DIAGRAM; MOLTEN-SALT; PLUTONIUM; URANIUM; THERMODYNAMICS; AMERICIUM; BEHAVIOR; SYSTEM; ELEMENTS AB The results of a recently reported series of bench-scale actinide recovery experiments with liquid cadmium cathodes (LCCs) are subjected to a more detailed analysis in this paper. It is suggested that separation efficiency (SE), not separation factor (SF), should be used to assess the effectiveness of an LCC to separate actinides from rare earth (RE) elements. The common definition of SF for any pair of actinide and RE elements in the molten salt/liquid Cd system is the ratio of their distribution coefficients, which are measured under equilibrium conditions. The definition of SE is broader than that of SF. For any pair of actinide and RE elements in the molten salt/liquid Cd system, SE is the ratio of their distribution coefficients, such as SE(Pu-U) = D(Pu)/D(U), where D(Pu) and Du are measured at either equilibrium or none quilibrium conditions. The relationship of SE with SF is linear and can be expressed as SE(Pu-U) = D(Pu)/D(U) and D(Pu) = SF(Pu-U)/D(U) + b. When D(Pu) and D(U) are measured under equilibrium conditions, SE is equal to SF. The physical or chemical meaning of the intercept b is not clear. From a mathematical point of view, the absolute values of b reveal the differences between the measured D(Pu)/D(U) or SE and SF. The negative values of b indicate that the SE measurement results are smaller than the associated SF. The values of b may be used to evaluate the SE of LCC on electrochemically recovered actinides from fission product elements. An electrochemical model was developed to investigate the mechanism of RE contamination of the actinides collected by the LCC. It was confirmed that REs were electrochemically transported into the Cd phase. A more negative LCC voltage has a stronger impact on the quantities of REs transported into the Cd than those of the actinides. C1 [Li, Shelly X.; Herrmann, Steven D.; Simpson, Michael F.] Idaho Natl Lab, Pyroproc Technol Dept, Idaho Falls, ID 83415 USA. RP Li, SX (reprint author), Idaho Natl Lab, Pyroproc Technol Dept, Mat & Fuels Complex, Idaho Falls, ID 83415 USA. EM Shelly.Li@inl.gov FU U.S. Government under DOE [DE-AC07-05ID14517] FX The submitted manuscript has been authored by a contractor of the U.S. Government under DOE contract DE-AC07-05ID14517. NR 26 TC 4 Z9 4 U1 2 U2 6 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 2010 VL 171 IS 3 SI SI BP 292 EP 299 PG 8 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 643JK UT WOS:000281292000007 ER PT J AU Yoo, TS Frank, SM Simpson, MF Hahn, PA Battisti, TJ Phongikaroon, S AF Yoo, Tae-Sic Frank, Steven M. Simpson, Michael F. Hahn, Paula A. Battisti, Terry J. Phongikaroon, Supathorn TI SALT-ZEOLITE ION-EXCHANGE EQUILIBRIUM STUDIES FOR A COMPLETE SET OF FISSION PRODUCTS IN MOLTEN LiCl-KCl SO NUCLEAR TECHNOLOGY LA English DT Article DE pyroprocessing; ion-exchange equilibrium; zeolite-A ID 4A SYSTEM; CHLORIDE; OCCLUSION; URANIUM; CATIONS; SODIUM; MODEL AB This paper presents results of experiments and modeling for ion exchange of LiCl-KCl based molten salts with zeolite-A. The experiments examined the equilibrium distributions of various nuclear fuel fission products between the molten salt and zeolite phases. In addition to data that were collected in previous studies, new experiments were run using ternary salts (LiCl-KCl-YCl(3), LiCl-KCl-LaCl(3), and LiCl-KCl-PrCl(3)) and quaternary salts (LiCl-KCl-CsCl-NdCl(3) and LiCl-KCl-CsCl-SrCl(2)). All contacting experiments were conducted at 500 degrees C with a salt-zeolite contacting period of 24 h to allow for equilibrium to be reached. The developed equilibrium model assumes that there are ion-exchange and occlusion sites, both of which are in equilibrium with the molten salt phase. A systematic approach in estimating the total occlusion capacity of the zeolite-A was developed. The parameters of the model, including the total occlusion capacity of the zeolite-A, were determined from fitting the entire set of experimental data available between previous studies and the current one. Experiments involving ternary salts were used to estimate the parameters of the model, while those involving quaternary salts were used to validate the model. C1 [Yoo, Tae-Sic; Frank, Steven M.; Simpson, Michael F.; Hahn, Paula A.; Battisti, Terry J.] Idaho Natl Lab, Pyroproc Technol Dept, Idaho Falls, ID 83415 USA. [Phongikaroon, Supathorn] Univ Idaho, Dept Chem Engn, Idaho Falls, ID 83402 USA. [Phongikaroon, Supathorn] Univ Idaho, Nucl Engn Program, Idaho Falls, ID 83402 USA. RP Yoo, TS (reprint author), Idaho Natl Lab, Pyroproc Technol Dept, POB 1625, Idaho Falls, ID 83415 USA. EM Tae-Sic.Yoo@inl.gov RI Frank, Steven/B-9046-2017 OI Frank, Steven/0000-0001-8259-6722 FU U.S. Department of Energy (DOE) Office of Nuclear Energy, Science, and Technology (NE) under the DOE-NE Idaho Operations Office [DE-AC07-05ID14517] FX This work was supported by the U.S. Department of Energy (DOE) Office of Nuclear Energy, Science, and Technology (NE) under the DOE-NE Idaho Operations Office contract DE-AC07-05ID14517. NR 15 TC 3 Z9 3 U1 1 U2 7 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 2010 VL 171 IS 3 SI SI BP 306 EP 315 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 643JK UT WOS:000281292000009 ER PT J AU Nicolas, FE Moxon, S de Haro, JP Calo, S Grigoriev, IV Torres-Martinez, S Moulton, V Ruiz-Vazquez, RM Dalmay, T AF Nicolas, Francisco Esteban Moxon, Simon de Haro, Juan P. Calo, Silvia Grigoriev, Igor V. Torres-Martinez, Santiago Moulton, Vincent Ruiz-Vazquez, Rosa M. Dalmay, Tamas TI Endogenous short RNAs generated by Dicer 2 and RNA-dependent RNA polymerase 1 regulate mRNAs in the basal fungus Mucor circinelloides SO NUCLEIC ACIDS RESEARCH LA English DT Article ID BUDDING YEAST; C-ELEGANS; MICRORNAS; HETEROCHROMATIN; PATHWAYS; SIRNAS; GENE AB Endogenous short RNAs (esRNAs) play diverse roles in eukaryotes and usually are produced from double-stranded RNA (dsRNA) by Dicer. esRNAs are grouped into different classes based on biogenesis and function but not all classes are present in all three eukaryotic kingdoms. The esRNA register of fungi is poorly described compared to other eukaryotes and it is not clear what esRNA classes are present in this kingdom and whether they regulate the expression of protein coding genes. However, evidence that some dicer mutant fungi display altered phenotypes suggests that esRNAs play an important role in fungi. Here, we show that the basal fungus Mucor circinelloides produces new classes of esRNAs that map to exons and regulate the expression of many protein coding genes. The largest class of these exonic-siRNAs (ex-siRNAs) are generated by RNA-dependent RNA Polymerase 1 (RdRP1) and dicer-like 2 (DCL2) and target the mRNAs of protein coding genes from which they were produced. Our results expand the range of esRNAs in eukaryotes and reveal a new role for esRNAs in fungi. C1 [de Haro, Juan P.; Calo, Silvia; Torres-Martinez, Santiago; Ruiz-Vazquez, Rosa M.] Univ Murcia, Fac Biol, Dept Genet & Microbiol, E-30100 Murcia, Spain. [Moxon, Simon; Moulton, Vincent] Univ E Anglia, Sch Comp Sci, Norwich NR4 7TJ, Norfolk, England. [Grigoriev, Igor V.] DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. [Nicolas, Francisco Esteban; Dalmay, Tamas] Univ E Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England. RP Ruiz-Vazquez, RM (reprint author), Univ Murcia, Fac Biol, Dept Genet & Microbiol, E-30100 Murcia, Spain. EM rmruiz@um.es; t.dalmay@uea.ac.uk RI Moxon, Simon/A-5385-2010; Dalmay, Tamas/E-1377-2011; Ruiz-Vazquez, Rosa Maria/K-6778-2014; Torres-Martinez, Santiago/K-7660-2014; NICOLAS, FRANCISCO/D-5717-2014; OI Dalmay, Tamas/0000-0003-1492-5429; Ruiz-Vazquez, Rosa Maria/0000-0002-6675-8506; Torres-Martinez, Santiago/0000-0002-7083-4516; Nicolas, Francisco Esteban/0000-0003-3762-5971 FU European Commission [LSHG-CT-2006-037900]; Spanish Ministerio de Ciencia e Innovacion [BFU2006-02408, BFU2009-07220]; Office of Science of the US Department of Energy [DE-AC02-05CH11231]; EU [LSHG-CT-2006-037900] FX European Commission (FP6 Integrated Project SIROCCO LSHG-CT-2006-037900 to T.D.); Spanish Ministerio de Ciencia e Innovacion (BFU2006-02408 and BFU2009-07220 to R.M.R-V.); Office of Science of the US Department of Energy (DE-AC02-05CH11231 to I.V.G.). Funding for open access charge: EU grant, FP6 Integrated Project SIROCCO LSHG-CT-2006-037900. NR 26 TC 36 Z9 40 U1 1 U2 6 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD SEP PY 2010 VL 38 IS 16 BP 5535 EP 5541 DI 10.1093/nar/gkq301 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 648US UT WOS:000281720500030 PM 20427422 ER PT J AU Wang, LA Swensen, JS Polikarpov, E Matson, DW Bonham, CC Bennett, W Gaspar, DJ Padmaperuma, AB AF Wang, Liang Swensen, James S. Polikarpov, Evgueni Matson, Dean W. Bonham, Charles C. Bennett, Wendy Gaspar, Daniel J. Padmaperuma, Asanga B. TI Highly efficient blue organic light-emitting devices with indium-free transparent anode on flexible substrates SO ORGANIC ELECTRONICS LA English DT Article DE Blue OLED; Phosphorescent; Transparent conductive oxide; Flexible substrate ID OXIDE THIN-FILMS; DIODES; ALUMINUM; TEMPERATURE; PERFORMANCE; DEPOSITION; TRANSPORT AB Indium-free transparent conducting oxides (TCOs) may provide a lower cost solution for the transparent anode in large area displays and solid-state lighting. Low temperature deposition processes are essential for manufacturing compatible with flexible substrate materials. We report herein a near room temperature sputtering process for generating an indium-free TCO coating on a flexible substrate. Specifically, we deposited gallium-doped zinc oxide (GZO) uniformly over a 1200 diameter area at nominally room temperature on polyethylene terephthalate (PET), without any noticeable damage to the PET substrate. The GZO films exhibit excellent physical, optical and electrical properties: roughness similar to 7 nm, transmittance >85% and resistivity similar to 10(-3) ohm cm. Phosphorescent blue organic light-emitting devices (OLEDs) were fabricated on these substrates with comparable performance (16% external quantum efficiency and 33 lm/W power efficiency at 1 mA/cm(2)) to that of devices fabricated on glass with GZO or indium tin oxide (ITO) as the anodes. These results demonstrate the utility of using GZO instead of the higher cost material ITO on PET for flexible displays and solid-state lighting. (C) 2010 Elsevier B.V. All rights reserved. C1 [Wang, Liang; Swensen, James S.; Polikarpov, Evgueni; Matson, Dean W.; Bonham, Charles C.; Bennett, Wendy; Gaspar, Daniel J.; Padmaperuma, Asanga B.] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA. RP Padmaperuma, AB (reprint author), Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA. EM asanga.padmaperuma@pnl.gov RI Gaspar, Dan/H-6166-2011; OI Gaspar, Daniel/0000-0002-8089-810X FU Energy Efficiency and Renewable Energy Division of the US Department of Energy [M6642866]; Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory; US Department of Energy (DOE) [DE-AC06-76RLO 1830] FX The authors thank Mark Gross for helpful discussions on the optical measurement of substrates. This project was funded by the Solid-State Lighting Program within the Building Technologies Program (BT; managed by the National Energy Technology Laboratory/NETL) of the Energy Efficiency and Renewable Energy Division of the US Department of Energy, award No. M6642866. A portion of the research described in this paper was performed in the Environmental Molecular Sciences Laboratory, 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. Pacific Northwest National Laboratory (PNNL) is operated by Battelle Memorial Institute for the US Department of Energy (DOE) under Contract DE-AC06-76RLO 1830. NR 29 TC 21 Z9 22 U1 3 U2 44 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1566-1199 J9 ORG ELECTRON JI Org. Electron. PD SEP PY 2010 VL 11 IS 9 BP 1555 EP 1560 DI 10.1016/j.orgel.2010.06.018 PG 6 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 646EL UT WOS:000281519700012 ER PT J AU Khalyavin, DD Manuel, P Mitchell, JF Chapon, LC AF Khalyavin, D. D. Manuel, P. Mitchell, J. F. Chapon, L. C. TI Spin correlations in the geometrically frustrated RBaCo4O7 antiferromagnets: Mean-field approach and Monte Carlo simulations SO PHYSICAL REVIEW B LA English DT Article ID ORDERED MAGNETIC FRUSTRATION; EXCHANGE INTERACTIONS; JAROSITES; YBACO4O7; CRYSTAL; LATTICE; SOLIDS AB Spin correlations in the geometrically frustrated RBaCo4O7 compounds, usually described as an alternating stacking of Kagome and triangular layers on a hexagonal lattice, have been studied by mean-field approach and by Monte Carlo simulations. The behavior of the system was modeled with an isotropic Heisenberg Hamiltonian as a function of the relevant parameter J(out)/J(in), representing the ratio between exchange integrals inside the Kagome layers, J(in), and between Kagome and triangular layers, J(out). This ratio can be varied in real systems by appropriate chemical substitutions. At the mean-field level, long-range magnetic order with the wave vector at the K point of symmetry (k=a*/3+b*/3) has been found for J(out)/J(in)> 0.7. Below this value, the dominant Fourier modes are completely degenerate in the entire Brillouin zone. The Monte Carlo simulations revealed that the long-range ordered configuration found in the mean-field calculations becomes the ground state of the system for J(out)/J(in)> 1.5. Below this critical ratio, quasi-one-dimensional magnetic ordering along the c axis, involving spins of the triangular sublattice was observed. The correlations in the (ab) plane were found to have a short-range 120 character with correlation length dependent on J(out)/J(in). C1 [Khalyavin, D. D.; Manuel, P.; Chapon, L. C.] STFC, Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England. [Mitchell, J. F.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Khalyavin, DD (reprint author), STFC, Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England. RI Khalyavin, Dmitry/E-4335-2017 OI Khalyavin, Dmitry/0000-0002-6724-7695 FU U.S. Department of Energy Office of Science Laboratory [DE-AC02-06CH11357] FX The authors thank J. Rodriguez-Carvajal for providing the program ENERMAG. Work at Argonne supported under Contract No. DE-AC02-06CH11357 by UChicago Argonne, LLC, Operator of Argonne National Laboratory, a U.S. Department of Energy Office of Science Laboratory. NR 37 TC 19 Z9 19 U1 0 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 2010 VL 82 IS 9 AR 094401 DI 10.1103/PhysRevB.82.094401 PG 11 WC Physics, Condensed Matter SC Physics GA 645JD UT WOS:000281450300002 ER PT J AU Svane, A Christensen, NE Gorczyca, I van Schilfgaarde, M Chantis, AN Kotani, T AF Svane, A. Christensen, N. E. Gorczyca, I. van Schilfgaarde, M. Chantis, A. N. Kotani, T. TI Quasiparticle self-consistent GW theory of III-V nitride semiconductors: Bands, gap bowing, and effective masses SO PHYSICAL REVIEW B LA English DT Article ID OPTICAL-PROPERTIES; INDIUM NITRIDE; HEXAGONAL INN; ENERGY-GAP; FILMS; PHOTOLUMINESCENCE; GA1-XINXN; PRESSURE; SPECTRA AB The electronic band structures of InN, GaN, and a hypothetical ordered InGaN2 compound, all in the wurtzite crystal structure, are calculated using the quasiparticle self-consistent GW approximation. This approach leads to band gaps which are significantly improved compared to gaps calculated on the basis of the local approximation to density functional theory, although generally overestimated by 0.2-0.3 eV in comparison with experimental gap values. Details of the electronic energies and the effective masses including their pressure dependence are compared with available experimental information. The band gap of InGaN2 is considerably smaller than what would be expected by linear interpolation implying a significant band gap bowing in InGaN alloys. C1 [Svane, A.; Christensen, N. E.] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark. [Gorczyca, I.] Polish Acad Sci, High Pressure Res Ctr, Warsaw, Poland. [van Schilfgaarde, M.] Arizona State Univ, Sch Mat, Tempe, AZ 85287 USA. [Chantis, A. N.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Kotani, T.] Tottori Univ, Dept Appl Phys & Math, Tottori 6808552, Japan. RP Svane, A (reprint author), Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark. RI kotani, takao/G-4355-2011; OI kotani, takao/0000-0003-1693-7052; Chantis, Athanasios/0000-0001-7933-0579 FU Danish Center for Scientific Computing Center (DCSC); Danish Agency for Science, Technology and Innovation; NSF [QMHP-0802216] FX A. S. and N.E.C. acknowledge support from the Danish Center for Scientific Computing Center (DCSC) and the Danish Agency for Science, Technology and Innovation. M. v. S. was supported by NSF Grant No. QMHP-0802216. NR 43 TC 36 Z9 36 U1 0 U2 19 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 2010 VL 82 IS 11 AR 115102 DI 10.1103/PhysRevB.82.115102 PG 6 WC Physics, Condensed Matter SC Physics GA 645JG UT WOS:000281450600003 ER PT J AU Singh, P Nag, S Singh, AK Hubel, H Al-Khatib, A Bringel, P Engelhardt, C Neusser-Neffgen, A Ragnarsson, I Carpenter, MP Janssens, RVF Khoo, TL Lauritsen, T Hagemann, GB Hansen, CR Herskind, B Sletten, G Bracco, A Benzoni, G Camera, F Fallon, P Clark, RM Chowdhury, P Amro, H AF Singh, Purnima Nag, Somnath Singh, A. K. Huebel, H. Al-Khatib, A. Bringel, P. Engelhardt, C. Neusser-Neffgen, A. Ragnarsson, I. Carpenter, M. P. Janssens, R. V. F. Khoo, T. L. Lauritsen, T. Hagemann, G. B. Hansen, C. R. Herskind, B. Sletten, G. Bracco, A. Benzoni, G. Camera, F. Fallon, P. Clark, R. M. Chowdhury, P. Amro, H. TI Noncollective aligned and antialigned states in I-125 SO PHYSICAL REVIEW C LA English DT Article ID GAMMA-RAY SPECTROSCOPY; HIGH-SPIN STATES; SHAPE COEXISTENCE; ROTATIONAL BANDS; EXCITATIONS; NUCLEI; TERMINATION; DECAY AB High-spin states in I-125 were populated using the reaction Se-82(Ca-48, p4n) at a beam energy of 200 MeV and gamma-ray coincidence events were acquired with the Gammasphere spectrometer. The level scheme of I-125 was extended considerably. In particular, maximally aligned states involving all eleven particles outside the Sn-114 core were observed. Comparison with cranked Nilsson-Strutinsky calculations suggests that three of these states are the final I-max states in terminating bands with all spin vectors aligned along a common axis. In two of these, one spin vector is antialigned and points in the opposite direction. In one of the states two spin vectors are antialigned. This is the first observation of a state with such a structure. C1 [Singh, Purnima; Nag, Somnath; Singh, A. K.] Indian Inst Technol, Dept Phys & Meteorol, Kharagpur 721302, W Bengal, India. [Huebel, H.; Al-Khatib, A.; Bringel, P.; Engelhardt, C.; Neusser-Neffgen, A.] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany. [Ragnarsson, I.] Lund Inst Technol, Dept Math Phys, S-221 Lund, Sweden. [Carpenter, M. P.; Janssens, R. V. F.; Khoo, T. L.; Lauritsen, T.] Argonne Natl Lab, Argonne, IL 60439 USA. [Hagemann, G. B.; Hansen, C. R.; Herskind, B.; Sletten, G.] Niels Bohr Inst, DK-2100 Copenhagen O, Denmark. [Bracco, A.; Benzoni, G.; Camera, F.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy. [Bracco, A.; Benzoni, G.; Camera, F.] INFN, I-20133 Milan, Italy. [Fallon, P.; Clark, R. M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. [Chowdhury, P.] Univ Massachusetts Lowell, Lowell, MA 01854 USA. [Amro, H.] Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA. RP Singh, P (reprint author), Indian Inst Technol, Dept Phys & Meteorol, Kharagpur 721302, W Bengal, India. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 FU Department of Science and Technology (DST), India [SR/S2/HEP-09/2005]; CSIR (India) [09/081(0704)/2009-EMR-I]; Swedish Science Research Council; German BMBF [06 BN 109]; Danish FNU Council for Natural Sciences; US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357, DE-AC03-76SF00098] FX Purnima Singh acknowledges financial assistance from the Department of Science and Technology (DST), India. Somnath Nag acknowledges a support from CSIR (India) under Contract No. 09/081(0704)/2009-EMR-I. This work was supported by the DST, India, under Project No. SR/S2/HEP-09/2005, by the Swedish Science Research Council, by the German BMBF under Contract No. 06 BN 109, by the Danish FNU Council for Natural Sciences, and by the US Department of Energy, Office of Nuclear Physics, under Contract Nos. DE-AC02-06CH11357 and DE-AC03-76SF00098. NR 41 TC 18 Z9 18 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD SEP 1 PY 2010 VL 82 IS 3 AR 034301 DI 10.1103/PhysRevC.82.034301 PG 11 WC Physics, Nuclear SC Physics GA 645JJ UT WOS:000281451000001 ER PT J AU Buckley, MR Hooper, D AF Buckley, Matthew R. Hooper, Dan TI Dark matter subhalos in the Fermi first source catalog SO PHYSICAL REVIEW D LA English DT Article ID LARGE-AREA TELESCOPE; HALOES; ANNIHILATION; SUBSTRUCTURE; DISRUPTION AB The Milky Way's dark matter halo is thought to contain large numbers of smaller subhalos. These objects can contain very high densities of dark matter and produce potentially observable fluxes of gamma rays. In this article, we study the gamma ray sources in the Fermi Gamma Ray Space Telescope's recently published First Source Catalog and attempt to determine whether this catalog might contain a population of dark matter subhalos. We find that, while as many as approximately 20-60 of the catalog's unidentified sources could plausibly be dark matter subhalos, such a population cannot be clearly identified as such at this time. From the properties of the sources in the First Source Catalog, we derive limits on the dark matter's annihilation cross section that are comparably stringent to those derived from recent observations of dwarf spheroidal galaxies. C1 [Buckley, Matthew R.] CALTECH, Dept Phys, Pasadena, CA 91125 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. RP Buckley, MR (reprint author), CALTECH, Dept Phys, Pasadena, CA 91125 USA. OI Buckley, Matthew/0000-0003-1109-3460 FU US Department of Energy [DE-FG03-92-ER40701, DE-FG02-95ER40896]; NASA [NAG5-10842] FX M. B. is supported by the US Department of Energy, under Grant No. DE-FG03-92-ER40701. D. H. is supported by the US Department of Energy, including Grant No. DE-FG02-95ER40896, and by NASA Grant No. NAG5-10842. NR 37 TC 36 Z9 36 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD SEP 1 PY 2010 VL 82 IS 6 AR 063501 DI 10.1103/PhysRevD.82.063501 PG 11 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 645JL UT WOS:000281451400003 ER PT J AU Akatyeva, E Huang, JY Dumitrica, T AF Akatyeva, E. Huang, J. Y. Dumitrica, T. TI Edge-Mediated Dislocation Processes in Multishell Carbon Nano-Onions? SO PHYSICAL REVIEW LETTERS LA English DT Article ID NANOPARTICLES; DIAMOND; FULLERENES; PARTICLES; ENERGIES AB We report in situ electron microscopy observations of dislocation dissociation and annihilation processes in individual nanometer-sized carbon onions. Essential for these processes is the counter-intuitive motion of the 1/2 < 0001 > edge from the outer surface to the inner region, which cross-links or unlinks a large number of shells. The correlation with atomistic simulations and analysis of the energy which separates the strain and edge components indicates that this inward glide originates in the reduction of edge with each inwards glide step, an effect specific to the spherical topology. C1 [Akatyeva, E.; Dumitrica, T.] Univ Minnesota, Dept Mech Engn, Minneapolis, MN 55455 USA. [Huang, J. Y.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Dumitrica, T (reprint author), Univ Minnesota, Dept Mech Engn, 111 Church St SE, Minneapolis, MN 55455 USA. EM td@me.umn.edu RI Huang, Jianyu/C-5183-2008; OI Dumitrica, Traian/0000-0001-6320-1625 FU NSF [CMMI-0747684, DMR-1006706]; NSF MRSEC [DMR-0212302, DMR-0819885]; U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX We thank R. Ballarini for useful discussions. E. A. and T. D. thank NSF CAREER Grant No. CMMI-0747684, NSF Grant No. DMR-1006706, and NSF MRSEC Grants No. DMR-0212302 and No. DMR-0819885. 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 No. DE-AC04-94AL85000. NR 17 TC 6 Z9 6 U1 4 U2 24 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD SEP 1 PY 2010 VL 105 IS 10 AR 106102 DI 10.1103/PhysRevLett.105.106102 PG 4 WC Physics, Multidisciplinary SC Physics GA 645JP UT WOS:000281452000009 PM 20867531 ER PT J AU Clayton, CE Ralph, JE Albert, F Fonseca, RA Glenzer, SH Joshi, C Lu, W Marsh, KA Martins, SF Mori, WB Pak, A Tsung, FS Pollock, BB Ross, JS Silva, LO Froula, DH AF Clayton, C. E. Ralph, J. E. Albert, F. Fonseca, R. A. Glenzer, S. H. Joshi, C. Lu, W. Marsh, K. A. Martins, S. F. Mori, W. B. Pak, A. Tsung, F. S. Pollock, B. B. Ross, J. S. Silva, L. O. Froula, D. H. TI Self-Guided Laser Wakefield Acceleration beyond 1 GeV Using Ionization-Induced Injection SO PHYSICAL REVIEW LETTERS LA English DT Article ID ELECTRON-BEAMS; PLASMA AB The concepts of matched-beam, self-guided laser propagation and ionization-induced injection have been combined to accelerate electrons up to 1.45 GeV energy in a laser wakefield accelerator. From the spatial and spectral content of the laser light exiting the plasma, we infer that the 60 fs, 110 TW laser pulse is guided and excites a wake over the entire 1.3 cm length of the gas cell at densities below 1.5 x 10(18) cm(-3). High-energy electrons are observed only when small (3%) amounts of CO2 gas are added to the He gas. Computer simulations confirm that it is the K-shell electrons of oxygen that are ionized and injected into the wake and accelerated to beyond 1 GeV energy. C1 [Clayton, C. E.; Joshi, C.; Lu, W.; Marsh, K. A.; Mori, W. B.; Pak, A.; Tsung, F. S.] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA. [Ralph, J. E.; Albert, F.; Glenzer, S. H.; Pollock, B. B.; Ross, J. S.; Froula, D. H.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Fonseca, R. A.; Martins, S. F.; Silva, L. O.] Inst Super Tecn, GoLP IPFN LA, Lisbon, Portugal. [Pollock, B. B.; Ross, J. S.] Univ Calif San Diego, MAE Dept, La Jolla, CA 92093 USA. RP Clayton, CE (reprint author), Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA. EM cclayton@ucla.edu RI Silva, Luis/C-3169-2009; Fonseca, Ricardo/B-7680-2009; Albert, Felicie/G-2645-2013; Lu, Wei/F-2504-2016 OI Silva, Luis/0000-0003-2906-924X; Fonseca, Ricardo/0000-0001-6342-6226; FU Department of Energy [DE-AC52-07NA27344, DE-FG03-92ER40727, DE-FG02-92ER40727, DE-FC02-07ER41500, DE-FG52-09NA29552]; NSF [PHY-0936266, PHY-0904039]; FCT, Portugal [SFRH/BD/35749/2007]; Laboratory Directed Research and Development Program [08-LW-070] FX We would like to thank R. Cauble, D. Price, S. Maricle, and J. Bonlie for their support of the Callisto laser system. This work was performed under the auspices of the Department of Energy by the University of California at Los Angeles and the Lawrence Livermore National Laboratory under Contracts No. DE-AC52-07NA27344, No. DE-FG03-92ER40727, No. DE-FG02-92ER40727, No. DE-FC02-07ER41500, and No. DE-FG52-09NA29552; NSF Grants No. PHY-0936266 and No. PHY-0904039; and FCT, Portugal, No. SFRH/BD/35749/2007. This work was partially funded by the Laboratory Directed Research and Development Program under project tracking code 08-LW-070. NR 28 TC 193 Z9 196 U1 7 U2 45 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 SEP 1 PY 2010 VL 105 IS 10 AR 105003 DI 10.1103/PhysRevLett.105.105003 PG 4 WC Physics, Multidisciplinary SC Physics GA 645JP UT WOS:000281452000007 PM 20867526 ER PT J AU Bogan, MJ Boutet, S Barty, A Benner, WH Frank, M Lomb, L Shoeman, R Starodub, D Seibert, MM Hau-Riege, SP Woods, B Decorwin-Martin, P Bajt, S Schulz, J Rohner, U Iwan, B Timneanu, N Marchesini, S Schlichting, I Hajdu, J Chapman, HN AF Bogan, M. J. Boutet, S. Barty, A. Benner, W. H. Frank, M. Lomb, L. Shoeman, R. Starodub, D. Seibert, M. M. Hau-Riege, S. P. Woods, B. Decorwin-Martin, P. Bajt, S. Schulz, J. Rohner, U. Iwan, B. Timneanu, N. Marchesini, S. Schlichting, I. Hajdu, J. Chapman, H. N. TI Single-shot femtosecond x-ray diffraction from randomly oriented ellipsoidal nanoparticles SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID AEROSOL MASS-SPECTROMETRY; GENERATING PARTICLE BEAMS; FREE-ELECTRON LASER; CONTROLLED DIMENSIONS; AERODYNAMIC LENSES; NOZZLE EXPANSIONS; DIVERGENCE; HOLOGRAPHY; SCATTERING; MOTION AB Coherent diffractive imaging of single particles using the single-shot "diffract and destroy" approach with an x-ray free electron laser (FEL) was recently demonstrated. A high-resolution low-noise coherent diffraction pattern, representative of the object before it turns into a plasma and explodes, results from the interaction of the FEL with the particle. Iterative phase retrieval algorithms are used to reconstruct two-dimensional projection images of the object from the recorded intensities alone. Here we describe the first single-shot diffraction data set that mimics the data proposed for obtaining 3D structure from identical particles. Ellipsoidal iron oxide nanoparticles (250 nm x 50 nm) were aerosolized and injected through an aerodynamic lens stack into a soft x-ray FEL. Particle orientation was not controlled with this injection method. We observed that, at the instant the x-ray pulse interacts with the particle, a snapshot of the particle's orientation is encoded in the diffraction pattern. The results give credence to one of the technical concepts of imaging individual nanometer and subnanometer-sized objects such as single molecules or larger clusters of molecules using hard x-ray FELs and will be used to help develop robust algorithms for determining particle orientations and 3D structure. C1 [Bogan, M. J.; Starodub, D.; Decorwin-Martin, P.] SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA. [Boutet, S.] SLAC Natl Accelerator Lab, LCLS, Menlo Pk, CA 94025 USA. [Barty, A.; Benner, W. H.; Frank, M.; Hau-Riege, S. P.; Woods, B.; Rohner, U.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Lomb, L.; Shoeman, R.; Schlichting, I.] DESY, Ctr Free Electron Laser Sci, Max Planck Adv Study Grp, D-22607 Hamburg, Germany. [Lomb, L.; Shoeman, R.; Schlichting, I.] Max Planck Inst Med Res, Heidelberg, Germany. [Seibert, M. M.; Iwan, B.; Timneanu, N.; Hajdu, J.] Uppsala Univ, Lab Mol Biophys, Dept Cell & Mol Biol, Uppsala, Sweden. [Rohner, U.] TOFWERK AG, Thun, Switzerland. [Marchesini, S.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Chapman, H. N.] Univ Hamburg, D-22761 Hamburg, Germany. RP Bogan, MJ (reprint author), SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA. EM mbogan@slac.stanford.edu RI Marchesini, Stefano/A-6795-2009; Chapman, Henry/G-2153-2010; Bajt, Sasa/G-2228-2010; Timneanu, Nicusor/C-7691-2012; Schlichting, Ilme/I-1339-2013; Barty, Anton/K-5137-2014; Frank, Matthias/O-9055-2014; OI Chapman, Henry/0000-0002-4655-1743; Timneanu, Nicusor/0000-0001-7328-0400; Barty, Anton/0000-0003-4751-2727; Bogan, Michael J./0000-0001-9318-3333 FU U.S. Department of Energy, Office of Basic Energy Sciences; U.S. Department of Energy [DE-AC02-76SF00515]; Lawrence Livermore National Laboratory [W-7405-Eng-48, DE-AC52-07NA27344, 05-SI-003]; Deutsches Elektronen-Synchrotron, a research center of the Helmholtz Association; Sven and Lilly Lawski Foundation; Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231] FX This work was supported by the following agencies: M. J. B., D. S., and P. D. M. were supported through the Stanford PULSE Institute at the SLAC National Accelerator Laboratory by the U.S. Department of Energy, Office of Basic Energy Sciences; The U.S. Department of Energy in part under Contract No. DE-AC02-76SF00515 and Lawrence Livermore National Laboratory in part under Contract No. W-7405-Eng-48 and in part under Contract No. DE-AC52-07NA27344, Lawrence Livermore National Laboratory (the project 05-SI-003 from the Laboratory Directed Research and Development Program of LLNL); the Deutsches Elektronen-Synchrotron, a research center of the Helmholtz Association. We acknowledge the financial support of the Sven and Lilly Lawski Foundation to M. M. S. Additional support comes from the DFG Cluster of Excellence at the Munich Centre for Advanced Photonics [30], from the Virtual Institute Program of the Helmholtz Society, the Max Planck Society, and by the Swedish Research Council. 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 27 TC 12 Z9 12 U1 2 U2 27 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 SEP PY 2010 VL 13 IS 9 AR 094701 DI 10.1103/PhysRevSTAB.13.094701 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 650RL UT WOS:000281869300002 ER PT J AU Rose, DV Miller, CL Welch, DR Clark, RE Madrid, EA Mostrom, CB Stygar, WA LeChien, KR Mazarakis, MA Langston, WL Porter, JL Woodworth, JR AF Rose, D. V. Miller, C. L. Welch, D. R. Clark, R. E. Madrid, E. A. Mostrom, C. B. Stygar, W. A. LeChien, K. R. Mazarakis, M. A. Langston, W. L. Porter, J. L. Woodworth, J. R. TI Circuit models and three-dimensional electromagnetic simulations of a 1-MA linear transformer driver stage SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID RECYCLABLE TRANSMISSION-LINE; Z-ACCELERATOR; FLOW THEORY; POWER-FLOW; SYSTEM; LTD; RADIOGRAPHY; DESIGN AB A 3D fully electromagnetic (EM) model of the principal pulsed-power components of a high-current linear transformer driver (LTD) has been developed. LTD systems are a relatively new modular and compact pulsed-power technology based on high-energy density capacitors and low-inductance switches located within a linear-induction cavity. We model 1-MA, 100-kV, 100-ns rise-time LTD cavities [ A. A. Kim et al., Phys. Rev. ST Accel. Beams 12, 050402 (2009)] which can be used to drive z-pinch and material dynamics experiments. The model simulates the generation and propagation of electromagnetic power from individual capacitors and triggered gas switches to a radially symmetric output line. Multiple cavities, combined to provide voltage addition, drive a water-filled coaxial transmission line. A 3D fully EM model of a single 1-MA 100-kV LTD cavity driving a simple resistive load is presented and compared to electrical measurements. A new model of the current loss through the ferromagnetic cores is developed for use both in circuit representations of an LTD cavity and in the 3D EM simulations. Good agreement between the measured core current, a simple circuit model, and the 3D simulation model is obtained. A 3D EM model of an idealized ten-cavity LTD accelerator is also developed. The model results demonstrate efficient voltage addition when driving a matched impedance load, in good agreement with an idealized circuit model. C1 [Rose, D. V.; Miller, C. L.; Welch, D. R.; Clark, R. E.; Madrid, E. A.; Mostrom, C. B.] Voss Sci LLC, Albuquerque, NM 87108 USA. [Stygar, W. A.; LeChien, K. R.; Mazarakis, M. A.; Langston, W. L.; Porter, J. L.; Woodworth, J. R.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Rose, DV (reprint author), Voss Sci LLC, Albuquerque, NM 87108 USA. FU U. S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX The authors would very much like to thank R. J. Leeper, M. K. Matzen, R. McKee, and L. Schneider at Sandia National Laboratories for invaluable contributions. We thank D. D. Hinshelwood at the Naval Research Laboratory and T. C. Genoni at Voss Scientific for helpful discussions regarding transmission line and circuit modeling. We thank A. Kim at the Institute of High Current Electronics for providing the experimental data and many helpful discussions regarding the 1-MA LTD cavity. One of the authors (D. V. R.) wishes to thank J. Leckbee, D. L. Johnson, J. E. Maenchen, and B. V. Oliver for helpful discussions of LTD technology over many years. The numerical simulations were carried out on parallel computer systems at Voss Scientific and Sandia National Laboratories. The authors thank all of the computer systems support staff for their outstanding efforts to enable the completion of the numerical simulations. We thank M. Dyson and S. Welch for technical assistance in the preparation of this manuscript and K. Androlewicz of Ktech, Inc. for preparing Fig. 1. 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 No. DE-AC04-94AL85000. NR 48 TC 4 Z9 4 U1 4 U2 16 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 SEP PY 2010 VL 13 IS 9 AR 090401 DI 10.1103/PhysRevSTAB.13.090401 PG 11 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 650RL UT WOS:000281869300001 ER PT J AU Raison, PE Pavel, CC Jardin, R Suard, E Haire, RG Popa, K AF Raison, Philippe E. Pavel, Claudiu C. Jardin, Regis Suard, Emmanuelle Haire, Richard G. Popa, Karin TI Thermal expansion behavior of Ce2Zr2O7 up to 898 K in conjunction with structural analyses by neutron diffraction SO PHYSICS AND CHEMISTRY OF MINERALS LA English DT Article DE Neutron diffraction; Ce2Zr2O7; Thermal expansion; Pyrochlore structure ID PYROCHLORE STRUCTURE; OXIDE PYROCHLORES; OXYGEN; CONDUCTIVITY; FLUORITE AB The thermal expansion of cubic pyrochlore Ce2Zr2O7 has been measured from room temperature to 898 K on polycrystalline material in conjunction with structural analyses using neutron diffraction. This compound has a thermal expansion coefficient in line with the other comparable lanthanoide pyrochlore oxides. The coefficient can be expressed as alpha(T) = 8.418 x 10(-6) + 0.9861 x 10(-9) x T. The structural refinements performed for each measured temperature showed a comparable linear evolution of the Ce-O/Zr-O distances (within 0.57%). C1 [Raison, Philippe E.; Pavel, Claudiu C.; Jardin, Regis] Joint Res Ctr, European Commiss, Inst Transuranium Elements, D-76125 Karlsruhe, Germany. [Pavel, Claudiu C.; Popa, Karin] Alexandru Ioan Cuza Univ, Dept Chem, Iasi 700506, Romania. [Suard, Emmanuelle] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France. [Haire, Richard G.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Raison, PE (reprint author), Joint Res Ctr, European Commiss, Inst Transuranium Elements, POB 2340, D-76125 Karlsruhe, Germany. EM philippe.raison@ec.europa.eu; kpopa@uaic.ro RI Popa, Karin/E-1929-2011; SUARD, Emmanuelle/E-9579-2012 OI Popa, Karin/0000-0003-2759-6492; SUARD, Emmanuelle/0000-0001-5966-5929 NR 19 TC 7 Z9 7 U1 1 U2 23 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0342-1791 J9 PHYS CHEM MINER JI Phys. Chem. Miner. PD SEP PY 2010 VL 37 IS 8 BP 555 EP 559 DI 10.1007/s00269-010-0356-5 PG 5 WC Materials Science, Multidisciplinary; Mineralogy SC Materials Science; Mineralogy GA 644NL UT WOS:000281384300006 ER PT J AU Lombardini, M Deiterding, R AF Lombardini, M. Deiterding, R. TI Large-eddy simulations of Richtmyer-Meshkov instability in a converging geometry SO PHYSICS OF FLUIDS LA English DT Editorial Material DE flow simulation; Rayleigh-Taylor instability; shock waves; vortices C1 [Lombardini, M.] CALTECH, Grad Aeronaut Labs, Pasadena, CA 91125 USA. [Deiterding, R.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. RP Lombardini, M (reprint author), CALTECH, Grad Aeronaut Labs, Pasadena, CA 91125 USA. RI Deiterding, Ralf/A-3394-2009 OI Deiterding, Ralf/0000-0003-4776-8183 NR 4 TC 1 Z9 4 U1 2 U2 9 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD SEP PY 2010 VL 22 IS 9 AR 091112 DI 10.1063/1.3491373 PG 1 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 657TQ UT WOS:000282437100012 ER PT J AU Whitelam, S AF Whitelam, Stephen TI Microscopic implications of competing pictures of DNA overstretching Comment on "Biophysical characterization of DNA binding from single molecule force measurements" by Kathy R. Chaurasiya, Thayaparan Paramanathan, Micah J. McCauley and Mark C. Williams SO PHYSICS OF LIFE REVIEWS LA English DT Editorial Material ID STRANDED-DNA; ENTROPY C1 Lawrence Berkeley Lab, Theory Nanostruct Mat Facil, Mol Foundry, Berkeley, CA 94720 USA. RP Whitelam, S (reprint author), Lawrence Berkeley Lab, Theory Nanostruct Mat Facil, Mol Foundry, Berkeley, CA 94720 USA. EM swhitelam@lbl.gov NR 14 TC 2 Z9 2 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1571-0645 J9 PHYS LIFE REV JI Phys. Life Rev. PD SEP PY 2010 VL 7 IS 3 BP 348 EP 349 DI 10.1016/j.plrev.2010.06.009 PG 2 WC Biology; Biophysics SC Life Sciences & Biomedicine - Other Topics; Biophysics GA 659BL UT WOS:000282541900012 PM 20621570 ER PT J AU Guan, XY Qin, H Fisch, NJ AF Guan, Xiaoyin Qin, Hong Fisch, Nathaniel J. TI Phase-space dynamics of runaway electrons in tokamaks SO PHYSICS OF PLASMAS LA English DT Article DE plasma drift waves; plasma toroidal confinement; Tokamak devices ID PLASMAS; AVALANCHE; ENERGY; PARTICLES; GAS AB The phase-space dynamics of runaway electrons is studied, including the influence of loop voltage, radiation damping, and collisions. A theoretical model and a numerical algorithm for the runaway dynamics in phase space are developed. Instead of standard integrators, such as the Runge-Kutta method, a variational symplectic integrator is applied to simulate the long-term dynamics of a runaway electron. The variational symplectic integrator is able to globally bound the numerical error for arbitrary number of time-steps, and thus accurately track the runaway trajectory in phase space. Simulation results show that the circulating orbits of runaway electrons drift outward toward the wall, which is consistent with experimental observations. The physics of the outward drift is analyzed. It is found that the outward drift is caused by the imbalance between the increase of mechanical angular momentum and the input of toroidal angular momentum due to the parallel acceleration. An analytical expression of the outward drift velocity is derived. The knowledge of trajectory of runaway electrons in configuration space sheds light on how the electrons hit the first wall, and thus provides clues for possible remedies. (C) 2010 American Institute of Physics. [doi:10.1063/1.3476268] C1 [Guan, Xiaoyin; Qin, Hong; Fisch, Nathaniel J.] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Guan, XY (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. FU U.S. Department of Energy [DEAC02-76-CH03073] FX This research was supported by the U.S. Department of Energy under Contract No. DEAC02-76-CH03073. NR 33 TC 25 Z9 25 U1 2 U2 19 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 2010 VL 17 IS 9 AR 092502 DI 10.1063/1.3476268 PG 9 WC Physics, Fluids & Plasmas SC Physics GA 657UD UT WOS:000282439300012 ER PT J AU Jennings, CA Cuneo, ME Waisman, EM Sinars, DB Ampleford, DJ Bennett, GR Stygar, WA Chittenden, JP AF Jennings, C. A. Cuneo, M. E. Waisman, E. M. Sinars, D. B. Ampleford, D. J. Bennett, G. R. Stygar, W. A. Chittenden, J. P. TI Simulations of the implosion and stagnation of compact wire arrays SO PHYSICS OF PLASMAS LA English DT Article DE explosions; plasma magnetohydrodynamics; plasma simulation; Z pinch ID Z-PINCH EXPERIMENTS; 2-DIMENSIONAL SIMULATIONS; INSTABILITY AB Wire array z-pinches have been used successfully for many years as a powerful x-ray source, as a dynamic hohlraum, and as an intense K-shell radiation source. Significant progress has been made in the effective modeling of these three-dimensional (3D) resistive plasmas. However, successful modeling also requires an accurate representation of the power delivered to these loads from the generator, which is an uncertainty potentially as large as the magnetohydrodynamic (MHD) implosion dynamics. We present 3D resistive MHD simulations of wire arrays that are coupled to transmission line equivalent models of the Z generator, driven by voltage sources derived directly from electrical measurements. Significant (multi-mega-ampere) current losses are shown to occur in both the convolute and the final feed. This limits the array performance and must be correctly accounted for to accurately represent the generator response to the load. Our simulations are validated against data for compact: 20 mm diameter, 10 mm long wire arrays that have produced the highest x-ray power densities on Z. This is one of the most comprehensive experimental data sets for single and nested wire arrays and includes voltage, current, x-ray power and energy, and multiple mass distribution measurements. These data tightly constrain our simulation results and allow us to describe in detail both the implosion and stagnation, and how energy is delivered to, and radiated from z-pinch loads. We show that the radiated power is consistent with the kinetic energy delivered to a distributed 3D mass profile over its implosion and stagnation. We also demonstrate how the local inductance of the transmission line connecting to the wire array is responsible for delivering more than 50% of the total radiated power. This makes the power output dependent on the design of specific elements of the generator, and their response to the imploding load, and not just on the peak current that can be delivered. (C) 2010 American Institute of Physics. [doi:10.1063/1.3474947] C1 [Jennings, C. A.; Cuneo, M. E.; Waisman, E. M.; Sinars, D. B.; Ampleford, D. J.; Bennett, G. R.; Stygar, W. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Chittenden, J. P.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England. RP Jennings, CA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU DOE/NNSA; U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX The authors would like to thank the Z operations crew and the Z-Beamlet staff for outstanding and dedicated technical support. We are grateful for the enthusiastic programmatic support of M. K. Matzen, T. A. Mehlhorn, D. Flicker, J. L. Porter, and M. Herrmann. We also thank M. Jones for valuable conversations and for making his data available. One of the authors (C. A. Jennings) would like to particularly thank T. A. Mehlhorn for his continued support and the opportunity to pursue much of this work. This work is supported by DOE/NNSA. Sandia National Laboratories is a multi-program 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 No. DE-AC04-94AL85000. NR 34 TC 31 Z9 33 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 2010 VL 17 IS 9 AR 092703 DI 10.1063/1.3474947 PG 16 WC Physics, Fluids & Plasmas SC Physics GA 657UD UT WOS:000282439300018 ER PT J AU Mikaelian, KO AF Mikaelian, Karnig O. TI Design of a Rayleigh-Taylor experiment to measure strength at high pressures SO PHYSICS OF PLASMAS LA English DT Article DE foils; high-pressure effects; indentation; mechanical strength; Rayleigh-Taylor instability; tantalum ID NATIONAL-IGNITION-FACILITY; CONSTITUTIVE MODEL; ELASTIC PROPERTIES; INSTABILITY; DYNAMICS; SOLIDS; METALS; DRIVE AB We present a design to measure the strength of a metal at very high pressures using the Rayleigh-Taylor instability. The target consists of a metal foil behind a tamper and an ablator, driven by soft x rays generated in a hohlraum at the Nation Ignition Facility or Laser Megajoule. Since ignition capsules and strength targets both call for quasiadiabatic drives, we use the early, 0-16 ns, part of the ignition pulse to drive an almost-10-Mb strength experiment. We also discuss variations on how initial perturbations may be placed at the metal/tamper interface, resulting in a high-pressure microindentation technique. We illustrate the time-evolution of perturbations under various assumptions concerning tantalum strength. (C) 2010 American Institute of Physics. [doi:10.1063/1.3478987] C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Mikaelian, KO (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. FU U.S. Department of Energy [DE-AC52-07NA27344] FX I am grateful to Dan Clark for providing the ignition pulse, a photon-frequency-dependent source. 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. NR 38 TC 7 Z9 8 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 2010 VL 17 IS 9 AR 092701 DI 10.1063/1.3478987 PG 6 WC Physics, Fluids & Plasmas SC Physics GA 657UD UT WOS:000282439300016 ER PT J AU Samulyak, R Parks, P Wu, LL AF Samulyak, Roman Parks, Paul Wu, Lingling TI Spherically symmetric simulation of plasma liner driven magnetoinertial fusion SO PHYSICS OF PLASMAS LA English DT Article DE deuterium; explosions; plasma heating; plasma inertial confinement; plasma jets; plasma magnetohydrodynamics; plasma sheaths; plasma simulation; xenon ID PHYSICS AB Spherically symmetric simulations of the implosion of plasma liners and compression of plasma targets in the concept of the plasma jet driven magnetoinertial fusion have been performed using the method of front tracking. The cases of single deuterium and xenon liners and double layer deuterium-xenon liners compressing various deuterium-tritium targets have been investigated, optimized for maximum fusion energy gains, and compared with theoretical predictions and scaling laws of [P. Parks, Phys. Plasmas 15, 062506 (2008)]. In agreement with the theory, the fusion gain was significantly below unity for deuterium-tritium targets compressed by Mach 60 deuterium liners. The most optimal setup for a given chamber size contained a target with the initial radius of 20 cm compressed by a 10 cm thick, Mach 60 xenon liner, achieving a fusion energy gain of 10 with 10 GJ fusion yield. Simulations also showed that composite deuterium-xenon liners reduce the energy gain due to lower target compression rates. The effect of heating of targets by alpha particles on the fusion energy gain has also been investigated. (C) 2010 American Institute of Physics. [doi:10.1063/1.3481461] C1 [Samulyak, Roman; Wu, Lingling] SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. [Samulyak, Roman] Brookhaven Natl Lab, Computat Sci Ctr, Upton, NY 11973 USA. [Parks, Paul] Gen Atom Co, San Diego, CA 92186 USA. RP Samulyak, R (reprint author), SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. FU U.S. Department of Energy [DE-AC02-98CH10886] FX This manuscript has been authored in part by Brookhaven Science Associates, LLC, under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. The United States Government retains, and the publisher, by accepting the article for publication, acknowledges, a worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for the United States Government purpose. NR 15 TC 11 Z9 11 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 2010 VL 17 IS 9 AR 092702 DI 10.1063/1.3481461 PG 10 WC Physics, Fluids & Plasmas SC Physics GA 657UD UT WOS:000282439300017 ER PT J AU Spektor, R Diamant, KD Beiting, EJ Raitses, Y Fisch, NJ AF Spektor, R. Diamant, K. D. Beiting, E. J. Raitses, Y. Fisch, N. J. TI Laser induced fluorescence measurements of the cylindrical Hall thruster plume SO PHYSICS OF PLASMAS LA English DT Article DE plasma devices; plasma diagnostics ID PLASMA MEASUREMENTS AB An investigation of a fully cylindrical Hall thruster was performed using laser induced fluorescence (LIF) to measure ion velocity profiles in the plume. The measurements confirm a previously reported 9% increase in the exhaust energy when the cathode keeper draws an excess current (overrun mode). Furthermore, the velocity directions in the plume remain relatively unchanged for the cusped and direct magnetic field configuration in both overrun and nonoverrun modes. Previously reported plume narrowing in the overrun mode was confirmed and found to be due to the shift of the acceleration and ionization regions toward the anode. The electric field inferred from the LIF measurements allowed calculation of the electron E X B drift. Close to the centerline of the thruster, electrons drift azimuthally with velocity decreasing away from the centerline, thus creating shear. This shear can be a source of plasma instabilities and influence electron transport. Further away from the centerline, electrons drift in the opposite direction with their velocity increasing with increasing radius. In that region, electrons rotate without shear. (C) 2010 American Institute of Physics. [doi:10.1063/1.3475433] C1 [Spektor, R.; Diamant, K. D.; Beiting, E. J.] Aerosp Corp, Los Angeles, CA 90009 USA. [Raitses, Y.; Fisch, N. J.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Spektor, R (reprint author), Aerosp Corp, POB 92957-M2-341, Los Angeles, CA 90009 USA. FU The Aerospace Corporation FX The authors thank Dr. Artem Smirnov for fruitful discussions. The project was supported by The Aerospace Corporation through its Independent Research and Development Program. NR 26 TC 4 Z9 4 U1 1 U2 8 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 2010 VL 17 IS 9 AR 093502 DI 10.1063/1.3475433 PG 6 WC Physics, Fluids & Plasmas SC Physics GA 657UD UT WOS:000282439300033 ER PT J AU Dreiner, HK Haber, HE Martin, SP AF Dreiner, Herbi K. Haber, Howard E. Martin, Stephen P. TI Two-component spinor techniques and Feynman rules for quantum field theory and supersymmetry SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS LA English DT Review ID R-PARITY VIOLATION; ELECTRON-POSITRON-ANNIHILATION; DYNAMIC SYMMETRY-BREAKING; DARK-MATTER ANNIHILATIONS; LIGHTEST HIGGS BOSON; STANDARD MODEL; DIMENSIONAL REGULARIZATION; GAUGE-THEORIES; GENERAL-RELATIVITY; CROSS-SECTIONS AB Two-component spinors are the basic ingredients for describing fermions in quantum field theory in 3 + 1 spacetime dimensions. We develop and review the techniques of the two-component spinor formalism and provide a complete set of Feynman rules for fermions using two-component spinor notation. These rules are suitable for practical calculations of cross-sections, decay rates, and radiative corrections in the Standard Model and its extensions, including supersymmetry, and many explicit examples are provided. The unified treatment presented in this review applies to massless Weyl fermions and massive Dirac and Majorana fermions. We exhibit the relation between the two-component spinor formalism and the more traditional four-component spinor formalism, and indicate their connections to the spinor helicity method and techniques for the computation of helicity amplitudes. (C) 2010 Published by Elsevier B.V. C1 [Dreiner, Herbi K.] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany. [Dreiner, Herbi K.] Univ Bonn, Inst Phys, D-53115 Bonn, Germany. [Haber, Howard E.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA. [Martin, Stephen P.] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. [Martin, Stephen P.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Dreiner, HK (reprint author), Univ Bonn, Bethe Ctr Theoret Phys, Nussallee 12, D-53115 Bonn, Germany. EM dreiner@th.physik.uni-bonn.de NR 446 TC 129 Z9 129 U1 2 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-1573 EI 1873-6270 J9 PHYS REP JI Phys. Rep.-Rev. Sec. Phys. Lett. PD SEP PY 2010 VL 494 IS 1-2 BP 1 EP 196 DI 10.1016/j.physrep.2010.05.002 PG 196 WC Physics, Multidisciplinary SC Physics GA 653EB UT WOS:000282069600001 ER PT J AU Antonelli, M Asner, DM Bauer, D Becher, T Beneke, M Bevan, AJ Blanke, M Bloise, C Bona, M Bondar, A Bozzi, C Brod, J Buras, AJ Cabibbo, N Carbone, A Cavoto, G Cirigliano, V Ciuchini, M Coleman, JP Cronin-Hennessy, DP Dalseno, JP Davies, CH Di Lodovico, F Dingfelder, J Dolezal, Z Donati, S Dungel, W Eigen, G Egede, U Faccini, R Feldmann, T Ferroni, F Flynn, JM Franco, E Fujikawa, M Furic, IK Gambino, P Gardi, E Gershon, TJ Giagu, S Golowich, E Goto, T Greub, C Grojean, C Guadagnoli, D Haisch, UA Harr, RF Hoang, AH Hurth, T Isidori, G Jaffe, DE Juttner, A Jager, S Khodjamirian, A Koppenburg, P Kowalewski, RV Krokovny, P Kronfeld, AS Laiho, J Lanfranchi, G Latham, TE Libby, J Limosani, A Pegna, DL Lu, CD Lubicz, V Lunghi, E Luth, VG Maltman, K Marciano, WJ Martin, EC Martinelli, G Martinez-Vidal, F Masiero, A Mateu, V Mescia, F Mohanty, G Moulson, M Neubert, M Neufeld, H Nishida, S Offen, N Palutan, M Paradisi, P Parsa, Z Passemar, E Patel, M Pecjak, BD Petrov, AA Pich, A Pierini, M Plaster, B Powell, A Prell, S Rademaker, J Rescigno, M Ricciardi, S Robbe, P Rodrigues, E Rotondo, M Sacco, R Schilling, CJ Schneider, O Scholz, EE Schumm, BA Schwanda, C Schwartz, AJ Sciascia, B Serrano, J Shigemitsu, J Shipsey, IJ Sibidanov, A Silvestrini, L Simonetto, F Simula, S Smith, C Soni, A Sonnenschein, L Sordini, V Sozzi, M Spadaro, T Spradlin, P Stocchi, A Tantalo, N Tarantino, C Telnov, AV Tonelli, D Towner, IS Trabelsi, K Urquijo, P Van de Water, RS Van Kooten, RJ Virto, J Volpi, G Wanke, R Westhoff, S Wilkinson, G Wingate, M Xie, Y Zupan, J AF Antonelli, M. Asner, D. M. Bauer, D. Becher, T. Beneke, M. Bevan, A. J. Blanke, M. Bloise, C. Bona, M. Bondar, A. Bozzi, C. Brod, J. Buras, A. J. Cabibbo, N. Carbone, A. Cavoto, G. Cirigliano, V. Ciuchini, M. Coleman, J. P. Cronin-Hennessy, D. P. Dalseno, J. P. Davies, C. H. Di Lodovico, F. Dingfelder, J. Dolezal, Z. Donati, S. Dungel, W. Eigen, G. Egede, U. Faccini, R. Feldmann, T. Ferroni, F. Flynn, J. M. Franco, E. Fujikawa, M. Furic, I. K. Gambino, P. Gardi, E. Gershon, T. J. Giagu, S. Golowich, E. Goto, T. Greub, C. Grojean, C. Guadagnoli, D. Haisch, U. A. Harr, R. F. Hoang, A. H. Hurth, T. Isidori, G. Jaffe, D. E. Juettner, A. Jaeger, S. Khodjamirian, A. Koppenburg, P. Kowalewski, R. V. Krokovny, P. Kronfeld, A. S. Laiho, J. Lanfranchi, G. Latham, T. E. Libby, J. Limosani, A. Pegna, D. Lopes Lu, C. D. Lubicz, V. Lunghi, E. Lueth, V. G. Maltman, K. Marciano, W. J. Martin, E. C. Martinelli, G. Martinez-Vidal, F. Masiero, A. Mateu, V. Mescia, F. Mohanty, G. Moulson, M. Neubert, M. Neufeld, H. Nishida, S. Offen, N. Palutan, M. Paradisi, P. Parsa, Z. Passemar, E. Patel, M. Pecjak, B. D. Petrov, A. A. Pich, A. Pierini, M. Plaster, B. Powell, A. Prell, S. Rademaker, J. Rescigno, M. Ricciardi, S. Robbe, P. Rodrigues, E. Rotondo, M. Sacco, R. Schilling, C. J. Schneider, O. Scholz, E. E. Schumm, B. A. Schwanda, C. Schwartz, A. J. Sciascia, B. Serrano, J. Shigemitsu, J. Shipsey, I. J. Sibidanov, A. Silvestrini, L. Simonetto, F. Simula, S. Smith, C. Soni, A. Sonnenschein, L. Sordini, V. Sozzi, M. Spadaro, T. Spradlin, P. Stocchi, A. Tantalo, N. Tarantino, C. Telnov, A. V. Tonelli, D. Towner, I. S. Trabelsi, K. Urquijo, P. Van de Water, R. S. Van Kooten, R. J. Virto, J. Volpi, G. Wanke, R. Westhoff, S. Wilkinson, G. Wingate, M. Xie, Y. Zupan, J. TI Flavor physics in the quark sector SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS LA English DT Review ID CHIRAL PERTURBATION-THEORY; TO-LEADING ORDER; B-MESON DECAYS; EFFECTIVE-FIELD-THEORY; LARGE TAN-BETA; UNIVERSAL EXTRA DIMENSIONS; DIRECT CP-VIOLATION; RARE KAON DECAYS; NONLEPTONIC WEAK-INTERACTIONS; ROOTED STAGGERED FERMIONS AB In the past decade, one of the major challenges of particle physics has been to gain an in-depth understanding of the role of quark flavor. In this time frame, measurements and the theoretical interpretation of their results have advanced tremendously. A much broader understanding of flavor particles has been achieved; apart from their masses and quantum numbers, there now exist detailed measurements of the characteristics of their interactions allowing stringent tests of Standard Model predictions. Among the most interesting phenomena of flavor physics is the violation of the CP symmetry that has been subtle and difficult to explore. In the past, observations of CP violation were confined to neutral K mesons, but since the early 1990s, a large number of CP-violating processes have been studied in detail in neutral B mesons. In parallel, measurements of the couplings of the heavy quarks and the dynamics for their decays in large samples of K, D, and B mesons have been greatly improved in accuracy and the results are being used as probes in the search for deviations from the Standard Model. In the near future, there will be a transition from the current to a new generation of experiments; thus a review of the status of quark flavor physics is timely. This report is the result of the work of physicists attending the 5th CKM workshop, hosted by the University of Rome "La Sapienza", September 9-13, 2008. It summarizes the results of the current generation of experiments that are about to be completed and it confronts these results with the theoretical understanding of the field which has greatly improved in the past decade. (C) 2010 Elsevier B.V. All rights reserved. C1 [Cabibbo, N.; Cavoto, G.; Faccini, R.; Ferroni, F.; Franco, E.; Giagu, S.; Martinelli, G.; Rescigno, M.; Silvestrini, L.; Virto, J.] INFN Sez Roma, I-00185 Rome, Italy. [Antonelli, M.; Bloise, C.; Isidori, G.; Lanfranchi, G.; Moulson, M.; Palutan, M.; Sciascia, B.; Sibidanov, A.; Spadaro, T.] INFN LNF, I-00044 Frascati, Italy. [Asner, D. M.] Carleton Univ, Ottawa, ON K1S 5B6, Canada. [Bauer, D.; Egede, U.; Koppenburg, P.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England. [Becher, T.; Kronfeld, A. S.; Lunghi, E.; Scholz, E. E.; Tonelli, D.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Beneke, M.] Rhein Westfal TH Aachen, Inst Theoret Phys E, D-52056 Aachen, Germany. [Bevan, A. J.; Di Lodovico, F.; Sacco, R.] Univ London, London E1 4NS, England. [Blanke, M.; Buras, A. J.; Feldmann, T.; Guadagnoli, D.; Jaeger, S.; Paradisi, P.] Tech Univ Munich, D-85748 Garching, Germany. [Blanke, M.; Hoang, A. H.; Mateu, V.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. [Bona, M.; Grojean, C.; Hurth, T.; Patel, M.; Pierini, M.; Robbe, P.; Sonnenschein, L.; Zupan, J.] CERN, CH-1211 Geneva 23, Switzerland. [Bondar, A.; Sibidanov, A.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia. [Bozzi, C.] INFN Sez Ferrara, I-44100 Ferrara, Italy. [Brod, J.] Univ Karlsruhe, D-76131 Karlsruhe, Germany. [Cabibbo, N.; Faccini, R.; Ferroni, F.; Giagu, S.; Martinelli, G.; Virto, J.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. [Carbone, A.] INFN Sez Bologna, I-40126 Bologna, Italy. [Cirigliano, V.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Ciuchini, M.; Lubicz, V.; Simula, S.; Tarantino, C.] INFN Sez Roma Tre, I-00146 Rome, Italy. [Coleman, J. P.; Hurth, T.; Lueth, V. G.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA. [Cronin-Hennessy, D. P.] Univ Minnesota, Minneapolis, MN 55455 USA. [Dalseno, J. P.; Goto, T.; Krokovny, P.; Nishida, S.; Trabelsi, K.] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan. [Davies, C. H.; Rodrigues, E.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. [Dingfelder, J.] Phys Inst Freiburg, D-79104 Freiburg, Germany. [Dolezal, Z.] Charles Univ Prague, Fac Math & Phys, IPNP, CR-18000 Prague 8, Czech Republic. [Donati, S.; Sozzi, M.; Volpi, G.] Univ Pisa, Dipartimento Fis, I-56126 Pisa, Italy. [Donati, S.; Sozzi, M.; Volpi, G.] INFN Sez Pisa, I-56127 Pisa, Italy. [Dungel, W.; Schwanda, C.] Inst High Energy Phys, A-1050 Vienna, Austria. [Eigen, G.] Univ Bergen, Dept Phys, N-5007 Bergen, Norway. [Fujikawa, M.] Nara Womens Univ, Nara 630, Japan. [Gambino, P.] INFN Sez Torino, I-10125 Turin, Italy. [Gambino, P.] Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy. [Gardi, E.; Xie, Y.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. [Gershon, T. J.; Latham, T. E.; Mohanty, G.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Golowich, E.] Univ Massachusetts, Amherst, MA 01003 USA. [Harr, R. F.; Petrov, A. A.] Wayne State Univ, Detroit, MI 48202 USA. [Jaffe, D. E.; Marciano, W. J.; Parsa, Z.; Soni, A.; Van de Water, R. S.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Juettner, A.] Johannes Gutenberg Univ Mainz, Inst Theoret Kernphys, D-55099 Mainz, Germany. [Khodjamirian, A.] Univ Siegen, D-57068 Siegen, Germany. [Kowalewski, R. V.] Univ Victoria, Victoria, BC V8W 3P6, Canada. [Laiho, J.] Washington Univ, St Louis, MO 63130 USA. [Martin, E. C.] Univ Calif Irvine, Irvine, CA 92697 USA. [Libby, J.] Indian Inst Technol, Madras 600032, Tamil Nadu, India. [Limosani, A.; Urquijo, P.] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia. [Pegna, D. Lopes; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA. [Lu, C. D.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China. [Lubicz, V.; Tarantino, C.] Univ Roma Tre, Dipartimento Fis E Amaldi, I-00146 Rome, Italy. [Maltman, K.] York Univ, Toronto, ON M3J 1P3, Canada. [Martinez-Vidal, F.; Pich, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain. [Masiero, A.; Rotondo, M.] INFN Sez Padova, I-35131 Padua, Italy. [Masiero, A.; Simonetto, F.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy. [Mescia, F.] Univ Barcelona, Fac Fis, Dept ECM & ICC, E-08028 Barcelona, Spain. [Mohanty, G.] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. [Neubert, M.] Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany. [Neufeld, H.] Univ Vienna, Fac Phys, A-1090 Vienna, Austria. [Offen, N.] Univ Paris Sud 11, CNRS, UMR 8627, Phys Theor Lab, F-91405 Orsay, France. [Greub, C.; Passemar, E.; Smith, C.] Univ Bern, Inst Theoret Phys, CH-3012 Bern, Switzerland. [Robbe, P.; Serrano, J.; Stocchi, A.] Univ Paris 11, UMR 8607, Lab Accelerateur Lineaire, F-91898 Orsay, France. [Pecjak, B. D.] Johannes Gutenberg Univ Mainz, THEP, D-55099 Mainz, Germany. [Plaster, B.] Univ Kentucky, Lexington, KY 40506 USA. [Prell, S.] Iowa State Univ, Ames, IA 50011 USA. [Ricciardi, S.] STFC Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. [Schilling, C. J.] Univ Texas Austin, Austin, TX 78712 USA. [Schneider, O.] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland. [Schwartz, A. J.] Univ Cincinnati, Cincinnati, OH 45221 USA. [Shigemitsu, J.] Ohio State Univ, Columbus, OH 43210 USA. [Smith, C.; Westhoff, S.] Univ Karlsruhe, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany. [Sonnenschein, L.] Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. [Sordini, V.] ETH, CH-8092 Zurich, Switzerland. [Powell, A.; Spradlin, P.; Wilkinson, G.] Univ Oxford, Oxford, England. [Tantalo, N.] INFN Sez Roma Tor Vergata, I-00133 Rome, Italy. [Towner, I. S.] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada. [Van Kooten, R. J.] Indiana Univ, Bloomington, IN 47405 USA. [Wanke, R.] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany. [Wingate, M.] Univ Cambridge, DAMTP, Cambridge CB3 0WA, England. [Zupan, J.] Jozef Stefan Inst, Ljubljana 1000, Slovenia. [Zupan, J.] Univ Ljubljana, Ljubljana 1000, Slovenia. [Shipsey, I. J.] Purdue Univ, W Lafayette, IN 47907 USA. [Schumm, B. A.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. [Furic, I. K.] Univ Florida, Gainesville, FL 32611 USA. [Rademaker, J.] Univ Bristol, Bristol BS8 1TL, Avon, England. [Flynn, J. M.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England. RP Faccini, R (reprint author), INFN Sez Roma, Piazzale Aldo Moro 2, I-00185 Rome, Italy. EM rfaccini@slac.stanford.edu RI Petrov, Alexey/F-2882-2010; Carbone, Angelo/C-8289-2012; Sozzi, Marco/H-1674-2011; Rotondo, Marcello/I-6043-2012; Tantalo, Nazario/J-3491-2012; Mescia, Federico/B-9036-2014; Martinez Vidal, F*/L-7563-2014; Lanfranchi, Gaia/P-5174-2015; Krokovny, Pavel/G-4421-2016; Spadaro, Tommaso/A-8471-2010; Di Lodovico, Francesca/L-9109-2016; OI Trabelsi, Karim/0000-0001-6567-3036; Volpi, Guido/0000-0003-1058-8883; Flynn, Jonathan/0000-0002-6280-1677; Faccini, Riccardo/0000-0003-2613-5141; Cirigliano, Vincenzo/0000-0002-9056-754X; Pich, Antonio/0000-0002-8019-5463; Silvestrini, Luca/0000-0002-2253-4164; Cavoto, Gianluca/0000-0003-2161-918X; Wingate, Matthew/0000-0001-6568-988X; Gambino, Paolo/0000-0002-7433-4914; grojean, christophe/0000-0002-7196-7361; Carbone, Angelo/0000-0002-7045-2243; Sozzi, Marco/0000-0002-2923-1465; Rotondo, Marcello/0000-0001-5704-6163; Tantalo, Nazario/0000-0001-5571-7971; Mescia, Federico/0000-0003-3582-2162; Martinez Vidal, F*/0000-0001-6841-6035; Lanfranchi, Gaia/0000-0002-9467-8001; Krokovny, Pavel/0000-0002-1236-4667; Spadaro, Tommaso/0000-0002-7101-2389; Di Lodovico, Francesca/0000-0003-3952-2175; Egede, Ulrik/0000-0001-5493-0762; Simula, Silvano/0000-0002-5533-6746 FU Australian Research Council; Australian Department of Industry Innovation; Science and Research; Natural Sciences and Engineering Research Council (Canada); Science Foundation of China; Commissariat a l'Energie Atomique and Institut National de Physique Nucleaire et de Physique des Particules (France); Bundesministerium fur Bildung und Forschung; Deutsche Forschungsgemeinschaft (Germany); Department of Science and Technology of India; Istituto Nazionale di Fisica Nucleare (Italy); Ministry of Education Culture, Sports, Science, and Technology (Japan); Japan Society of Promotion of Science; Ministry of Education of Korea,; Research Council of Norway; Ministry of Education and Science of the Russian Federation; Slovenian Research Agency; Ministerio de Educacion y Ciencia (Spain); Science and Technology Facilities Council (United Kingdom); US Department of Energy and National Science Foundation; European Community [MRTN-CT-2006-035505]; National Science Foundation of China [MRTN-CT-2006-035482, 10735080, 10625525]; DFG Cluster of Excellence [BU 706/2-1]; Japan Society for the Promotion of Science [20244037]; A. von Humboldt Stiftung; MICINN, Spain [FPA2007-60323]; ITP at University of Zurich; US National Science Foundation [PHY-0555304]; Department of Energy [DE-FG02-96ER41005, DEACO2-07CH11359-Fermi]; Generalitat Valenciana [PROMETEO/2008/069] FX This work is supported by the Australian Research Council and the Australian Department of Industry Innovation, Science and Research, the Natural Sciences and Engineering Research Council (Canada), the National Science Foundation of China, the Commissariat a l'Energie Atomique and Institut National de Physique Nucleaire et de Physique des Particules (France), the Bundesministerium fur Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), the Department of Science and Technology of India, the Istituto Nazionale di Fisica Nucleare (Italy), the Ministry of Education Culture, Sports, Science, and Technology (Japan), the Japan Society of Promotion of Science, the BK21 program of the Ministry of Education of Korea, the Research Council of Norway, the Ministry of Education and Science of the Russian Federation, the Slovenian Research Agency, Ministerio de Educacion y Ciencia (Spain), the Science and Technology Facilities Council (United Kingdom), and the US Department of Energy and National Science Foundation.r Individuals have received support from European Community's Marie-Curie Research Training Networks under contracts MRTN-CT-2006-035505 ('Tools and Precision Calculations for Physics Discoveries at Colliders') and MRTN-CT-2006-035482 ('FLAVIAnet'), from the National Science Foundation of China (grants 10735080 and 10625525), the DFG Cluster of Excellence 'Origin and Structure of the Universe' (grant BU 706/2-1), the Japan Society for the Promotion of Science (grant 20244037), and the A. von Humboldt Stiftung, from MICINN, Spain (grant FPA2007-60323), from the ITP at University of Zurich, from the US National Science Foundation (grant PHY-0555304) and Department of Energy (grants DE-FG02-96ER41005 and DEACO2-07CH11359-Fermi Research Alliance, LLC), and from Generalitat Valenciana (grant PROMETEO/2008/069). NR 1217 TC 125 Z9 125 U1 4 U2 37 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-1573 EI 1873-6270 J9 PHYS REP JI Phys. Rep.-Rev. Sec. Phys. Lett. PD SEP PY 2010 VL 494 IS 3-4 BP 197 EP 414 DI 10.1016/j.physrep.2010.05.003 PG 218 WC Physics, Multidisciplinary SC Physics GA 654TX UT WOS:000282194400001 ER PT J AU Crease, RP AF Crease, Robert P. TI Critical Point Body talk SO PHYSICS WORLD LA English DT Editorial Material C1 [Crease, Robert P.] SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11794 USA. [Crease, Robert P.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Crease, RP (reprint author), SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11794 USA. EM rcrease@notes.cc.sunysb.edu NR 0 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8585 J9 PHYS WORLD JI Phys. World PD SEP PY 2010 VL 23 IS 9 BP 19 EP 19 PG 1 WC Physics, Multidisciplinary SC Physics GA 651DM UT WOS:000281904800017 ER PT J AU Kirby, J Nishimoto, M Park, JG Withers, ST Nowroozi, F Behrendt, D Rutledge, EJG Fortman, JL Johnson, HE Anderson, JV Keasling, JD AF Kirby, James Nishimoto, Minobu Park, J. Genevieve Withers, Sydnor T. Nowroozi, Farnaz Behrendt, Dominik Rutledge, Elizabeth J. Garcia Fortman, Jeffrey L. Johnson, Holly E. Anderson, James V. Keasling, Jay D. TI Cloning of casbene and neocembrene synthases from Euphorbiaceae plants and expression in Saccharomyces cerevisiae SO PHYTOCHEMISTRY LA English DT Article DE Ricinus communis; Sapium sebiferum; Euphorbia esula; Euphorbia resinifera; Homalanthus nutans; Euphorbiaceae; Metabolic engineering; Isoprenoid; Yeast; Phorbol; Ingenol ID LATENT HIV-1 EXPRESSION; PROTEIN-KINASE-C; FARNESYL DIPHOSPHATE; BIOLOGICAL-ACTIVITY; MEVALONATE KINASE; PHORBOL ESTERS; YEAST; BIOSYNTHESIS; PROSTRATIN; ACTIVATION AB A large number of diterpenes have been isolated from Euphorbiaceae plants, many of which are of interest due to toxicity or potential therapeutic activity. Specific Euphorbiaceae diterpenes of medical interest include the latent HIV-1 activator prostratin (and related 12-deoxyphorbol esters), the analgesic resiniferatoxin, and the anticancer drug candidate ingenol 3-angelate. In spite of the large number of diterpenes isolated from these plants and the similarity of their core structures, there is little known about their biosynthetic pathways. Other than the enzymes involved in gibberellin biosynthesis, the only diterpene synthase isolated to date from the Euphorbiaceae has been casbene synthase, responsible for biosynthesis of a macrocyclic diterpene in the castor bean (Ricinus communis). Here, we have selected five Euphorbiaceae species in which to investigate terpene biosynthesis and report on the distribution of diterpene synthases within this family. We have discovered genes encoding putative casbene synthases in all of our selected Euphorbiaceae species and have demonstrated high-level casbene production through expression of four of these genes in a metabolically engineered strain of Saccharomyces cerevisine. The only other diterpene synthase found among the five plants was a neocembrene synthase from R. communis (this being the first report of a neocembrene synthase gene). Based on the prevalence of casbene synthases, the lack of other candidates, and the structure of the casbene skeleton, we consider it likely that casbene is the precursor to a large number of Euphorbiaceae diterpenes. Casbene production levels of 31 mg/L were achieved in S. cerevisiae and we discuss strategies to further increase production by maximizing flux through the mevalonate pathway. (C) 2010 Elsevier Ltd. All rights reserved. C1 [Keasling, Jay D.] Univ Calif, Joint BioEnergy Inst, Emeryville, CA 94608 USA. [Kirby, James; Nishimoto, Minobu; Park, J. Genevieve; Withers, Sydnor T.; Nowroozi, Farnaz; Behrendt, Dominik; Rutledge, Elizabeth J. Garcia; Fortman, Jeffrey L.; Keasling, Jay D.] Univ Calif Berkeley, Calif Inst Quantitat Biosci QB3, Berkeley, CA 94720 USA. [Johnson, Holly E.] Inst EthnoMed, Jackson, WY 83001 USA. [Anderson, James V.] ARS, USDA, Biosci Res Lab, Fargo, ND 58105 USA. [Keasling, Jay D.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Keasling, Jay D.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. [Keasling, Jay D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Keasling, JD (reprint author), Univ Calif, Joint BioEnergy Inst, 5885 Hollis St,4th Floor, Emeryville, CA 94608 USA. EM keasling@berkeley.edu RI Keasling, Jay/J-9162-2012; OI Keasling, Jay/0000-0003-4170-6088; Anderson, James/0000-0002-1801-5767 NR 47 TC 37 Z9 40 U1 3 U2 42 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0031-9422 J9 PHYTOCHEMISTRY JI Phytochemistry PD SEP PY 2010 VL 71 IS 13 BP 1466 EP 1473 DI 10.1016/j.phytochem.2010.06.001 PG 8 WC Biochemistry & Molecular Biology; Plant Sciences SC Biochemistry & Molecular Biology; Plant Sciences GA 639OD UT WOS:000280983200004 PM 20594566 ER PT J AU Blanc, G Duncan, G Agarkova, I Borodovsky, M Gurnon, J Kuo, A Lindquist, E Lucas, S Pangilinan, J Polle, J Salamov, A Terry, A Yamada, T Dunigan, DD Grigoriev, IV Claverie, JM Van Etten, JL AF Blanc, Guillaume Duncan, Garry Agarkova, Irina Borodovsky, Mark Gurnon, James Kuo, Alan Lindquist, Erika Lucas, Susan Pangilinan, Jasmyn Polle, Juergen Salamov, Asaf Terry, Astrid Yamada, Takashi Dunigan, David D. Grigoriev, Igor V. Claverie, Jean-Michel Van Etten, James L. TI The Chlorella variabilis NC64A Genome Reveals Adaptation to Photosymbiosis, Coevolution with Viruses, and Cryptic Sex SO PLANT CELL LA English DT Article ID CELL-WALL; CHLAMYDOMONAS-REINHARDTII; PARAMECIUM-BURSARIA; SUGAR COMPOSITION; GENUS CHLORELLA; EVOLUTION; ALGAE; INSIGHTS; PLANTS; AUXIN AB Chlorella variabilis NC64A, a unicellular photosynthetic green alga (Trebouxiophyceae), is an intracellular photobiont of Paramecium bursaria and a model system for studying virus/algal interactions. We sequenced its 46-Mb nuclear genome, revealing an expansion of protein families that could have participated in adaptation to symbiosis. NC64A exhibits variations in GC content across its genome that correlate with global expression level, average intron size, and codon usage bias. Although Chlorella species have been assumed to be asexual and nonmotile, the NC64A genome encodes all the known meiosis-specific proteins and a subset of proteins found in flagella. We hypothesize that Chlorella might have retained a flagella-derived structure that could be involved in sexual reproduction. Furthermore, a survey of phytohormone pathways in chlorophyte algae identified algal orthologs of Arabidopsis thaliana genes involved in hormone biosynthesis and signaling, suggesting that these functions were established prior to the evolution of land plants. We show that the ability of Chlorella to produce chitinous cell walls likely resulted from the capture of metabolic genes by horizontal gene transfer from algal viruses, prokaryotes, or fungi. Analysis of the NC64A genome substantially advances our understanding of the green lineage evolution, including the genomic interplay with viruses and symbiosis between eukaryotes. C1 [Blanc, Guillaume; Claverie, Jean-Michel] Aix Marseille Univ, Ctr Natl Rech Sci, Lab Informat Genom & Struct, Inst Microbiol Mediterranee,UPR2589, F-13009 Marseille, France. [Duncan, Garry] Nebraska Wesleyan Univ, Dept Biol, Lincoln, NE 68504 USA. [Agarkova, Irina; Gurnon, James; Dunigan, David D.; Van Etten, James L.] Univ Nebraska, Dept Plant Pathol, Lincoln, NE 68583 USA. [Borodovsky, Mark] Georgia Inst Technol, Sch Computat Sci & Engn, Wallace H Coulter Dept Biomed Engn, Atlanta, GA 30332 USA. [Kuo, Alan; Lindquist, Erika; Lucas, Susan; Pangilinan, Jasmyn; Salamov, Asaf; Terry, Astrid; Grigoriev, Igor V.] Joint Genome Inst, Dept Energy, Walnut Creek, CA 94598 USA. [Polle, Juergen] CUNY Brooklyn Coll, Dept Biol, Brooklyn, NY 11210 USA. [Yamada, Takashi] Hiroshima Univ, Dept Mol Biotechnol, Grad Sch Adv Sci Matter, Higashihiroshima 7398530, Japan. RP Blanc, G (reprint author), Aix Marseille Univ, Ctr Natl Rech Sci, Lab Informat Genom & Struct, Inst Microbiol Mediterranee,UPR2589, F-13009 Marseille, France. EM guillaume.blanc@igs.cnrs-mrs.fr OI Blanc, Guillaume/0000-0001-5728-1104; Claverie, jean-michel/0000-0003-1424-0315 FU Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]; Marseille-Nice Genopole; PACA-Bioinfo platform; Infrastructures en Biologie Sante et Agronomie, France; National Institute of General Medical Sciences [GM32441]; National Institutes of Health [P20 RR016469] FX We thank Marek Elias for helpful discussion on flagella proteins. We also thank Magali Lescot, Dmitry Brogun, Timo Greiner, Ming Kang, Gentry L. Lewis, Suzanne Rose, Eliza Wiech, and Giane M. Yanai-Balser for their contribution in the annotation. Genome sequencing 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 DE-AC02-05CH11231. This work was partially supported by Marseille-Nice Genopole, the PACA-Bioinfo platform, the French fund "Infrastructures en Biologie Sante et Agronomie," and Public Health Service Grant GM32441 from the National Institute of General Medical Sciences (to J.L.V.E.). G.D. was partially funded by National Institutes of Health Grant P20 RR016469. NR 68 TC 207 Z9 215 U1 8 U2 84 PU AMER SOC PLANT BIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 USA SN 1040-4651 J9 PLANT CELL JI Plant Cell PD SEP PY 2010 VL 22 IS 9 BP 2943 EP 2955 DI 10.1105/tpc.110.076406 PG 13 WC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology SC Biochemistry & Molecular Biology; Plant Sciences; Cell Biology GA 672JT UT WOS:000283579800006 PM 20852019 ER PT J AU Marti, L Stefano, G Tamura, K Hawes, C Renna, L Held, MA Brandizzi, F AF Marti, Lucia Stefano, Giovanni Tamura, Kentaro Hawes, Chris Renna, Luciana Held, Michael A. Brandizzi, Federica TI A missense mutation in the vacuolar protein GOLD36 causes organizational defects in the ER and aberrant protein trafficking in the plant secretory pathway SO PLANT JOURNAL LA English DT Article DE endoplasmic reticulum integrity; Golgi apparatus; protein traffic ID CORTICAL ENDOPLASMIC-RETICULUM; ARABIDOPSIS-THALIANA; QUALITY-CONTROL; EXPORT SITES; SUBCELLULAR-LOCALIZATION; FLUORESCENT PROTEIN; MEMBRANE-PROTEIN; GOLGI-APPARATUS; EPIDERMAL-CELLS; HUMAN GENOME AB A central question in cell biology is how the identity of organelles is established and maintained. Here, we report on GOLD36, an EMS mutant identified through a screen for partial displacement of the Golgi marker, ST-GFP, to other organelles. GOLD36 showed partial distribution of ST-GFP into a modified endoplasmic reticulum (ER) network, which formed bulges and large skein-like structures entangling Golgi stacks. GOLD36 showed defects in ER protein export as evidenced by our observations that, besides the partial retention of Golgi markers in the ER, the trafficking of a soluble bulk-flow marker to the cell surface was also compromised. Using a combination of classical mapping and next-generation DNA sequencing approaches, we linked the mutant phenotype to a missense mutation of a proline residue in position 80 to a leucine residue in a small endomembrane protein encoded by the gold36 locus (At1g54030). Subcellular localization analyses indicated that GOLD36 is a vacuolar protein and that its mutated form is retained in the ER. Interestingly also, a gold36 knock-out mutant mirrored the GOLD36 subcellular phenotype. These data indicate that GOLD36 is a protein destined to post-ER compartments and suggest that its export from the ER is a requirement to ensure steady-state maintenance of the organelle's organization and functional activity in relation to other secretory compartments. We speculate that GOLD36 may be a factor that is necessary for ER integrity because of its ability to limit deleterious effects of other secretory proteins on the ER. C1 [Marti, Lucia; Stefano, Giovanni; Renna, Luciana; Held, Michael A.; Brandizzi, Federica] Michigan State Univ, DOE Plant Res Lab, E Lansing, MI 48824 USA. [Hawes, Chris] Oxford Brookes Univ, Sch Life Sci, Oxford OX3 0BP, England. [Tamura, Kentaro] Emphasis Kyoto Univ, Grad Sch Sci, Dept Bot, Sakyo Ku, Emphasis Kyoto 6068502, Japan. RP Brandizzi, F (reprint author), Michigan State Univ, DOE Plant Res Lab, E Lansing, MI 48824 USA. EM fb@msu.edu RI STEFANO, GIOVANNI/A-8264-2011; OI STEFANO, GIOVANNI/0000-0002-2744-0052; Held, Michael/0000-0003-2604-8048; Renna, Luciana/0000-0001-8738-2408 FU Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, US Department of Energy [DE-FG02-91ER20021]; National Science Foundation [MCB 0841594]; BBSRC FX We acknowledge support by the Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, US Department of Energy (award number DE-FG02-91ER20021) and National Science Foundation (MCB 0841594) (F. B.) and the BBSRC (C. H.). We are grateful to Mr Kevin Carr for the bioinformatics analyses, Ms Linda Danhof for technical help, and Ms Karen Bird for editing the manuscript. NR 47 TC 15 Z9 18 U1 0 U2 2 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 SEP PY 2010 VL 63 IS 6 BP 901 EP 913 DI 10.1111/j.1365-313X.2010.04296.x PG 13 WC Plant Sciences SC Plant Sciences GA 651CN UT WOS:000281902300002 PM 20626647 ER PT J AU Pavangadkar, K Thomashow, MF Triezenberg, SJ AF Pavangadkar, Kanchan Thomashow, Michael F. Triezenberg, Steven J. TI Histone dynamics and roles of histone acetyltransferases during cold-induced gene regulation in Arabidopsis SO PLANT MOLECULAR BIOLOGY LA English DT Article DE Chromatin remodeling; Histone acetyltransferase; HAT; GCN5; ADA2; Plant gene regulation; Cold acclimation ID YEAST SAGA COMPLEX; FLOWERING-LOCUS-C; TRANSCRIPTION FACTOR; LOW-TEMPERATURE; SACCHAROMYCES-CEREVISIAE; SUSPENSION-CULTURES; FREEZING TOLERANCE; ADA-COMPLEX; DNA-BINDING; IN-VIVO AB In Arabidopsis, CBF transcription factors bind to and activate certain cold-regulated (COR) gene promoters during cold acclimation. Consistent with the prevailing model that histone acetylation and nucleosomal depletion correspond with transcriptionally active genes, we now report that H3 acetylation increases and nucleosome occupancy decreases at COR gene promoters upon cold acclimation. Overexpression of CBF1 resulted in a constitutive increase in H3 acetylation and decrease in nucleosome occupancy, consistent with the constitutive activation of COR gene expression. Overexpression of a truncated form of CBF2 lacking its transcriptional activation domain resulted in a cold-stimulated increase in H3 acetylation, but no change in nucleosomal occupancy or COR gene expression, indicating that histone acetylation is congruent with but not sufficient for cold-activation of COR gene expression. Plants homozygous for T-DNA disruption alleles of GCN5 (encoding a histone acetyltransferase) or ADA2b (a GCN5-interacting protein) show diminished expression of COR genes during cold acclimation. Contrary to expectations, H3 acetylation at COR gene promoters was stimulated upon cold acclimation in ada2b and gcn5 plants as in wild type plants, but the decrease in nucleosome occupancy was diminished. Thus, GCN5 is not the HAT responsible for histone acetylation at COR gene promoters during cold acclimation. Several other HAT mutant plants were also tested; although some do affect COR gene expression, none affected histone acetylation. Therefore, H3 acetylation at the COR gene promoters is not solely dependent on any of the HATs tested. C1 [Triezenberg, Steven J.] Van Andel Res Inst, Grand Rapids, MI 49503 USA. [Pavangadkar, Kanchan; Thomashow, Michael F.; Triezenberg, Steven J.] Michigan State Univ, Grad Program Genet, E Lansing, MI 48824 USA. [Pavangadkar, Kanchan; Thomashow, Michael F.] Michigan State Univ, Dept Microbiol & Mol Genet, E Lansing, MI 48824 USA. [Thomashow, Michael F.] Michigan State Univ, MSU DOE Plant Res Lab, E Lansing, MI 48824 USA. [Triezenberg, Steven J.] Michigan State Univ, Dept Biochem & Mol Genet, E Lansing, MI 48824 USA. RP Triezenberg, SJ (reprint author), Van Andel Res Inst, 333 Bostwick NE, Grand Rapids, MI 49503 USA. EM steve.triezenberg@vai.org FU US National Science Foundation [MCB-0240309]; NSF [DBI 0110124, DBI 0701709]; Department of Energy [DE-FG02-91ER20021]; Michigan Agricultural Experiment Station; Van Andel Research Institute FX This research was supported by grants from the US National Science Foundation (MCB-0240309), the NSF Plant Genome Project (DBI 0110124 and DBI 0701709), the Department of Energy (DE-FG02-91ER20021) and the Michigan Agricultural Experiment Station and by the Van Andel Research Institute. We thank Drs. Kostas Vlachonasios and Amy Hark for thoughtful discussions during the course of this work, and Colleen Doherty and Sarah Gilmour for sharing plant lines and data prior to publication. NR 75 TC 23 Z9 26 U1 4 U2 21 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0167-4412 J9 PLANT MOL BIOL JI Plant Mol.Biol. PD SEP PY 2010 VL 74 IS 1-2 BP 183 EP 200 DI 10.1007/s11103-010-9665-9 PG 18 WC Biochemistry & Molecular Biology; Plant Sciences SC Biochemistry & Molecular Biology; Plant Sciences GA 638UG UT WOS:000280921500014 PM 20661629 ER PT J AU Lacayo, CI Malkin, AJ Holman, HYN Chen, LA Ding, SY Hwang, MS Thelen, MP AF Lacayo, Catherine I. Malkin, Alexander J. Holman, Hoi-Ying N. Chen, Liang Ding, Shi-You Hwang, Mona S. Thelen, Michael P. TI Imaging Cell Wall Architecture in Single Zinnia elegans Tracheary Elements SO PLANT PHYSIOLOGY LA English DT Article ID ATOMIC-FORCE MICROSCOPY; CARBOHYDRATE-BINDING MODULES; DIRECT VISUALIZATION; CELLULOSE MICROFIBRILS; MOLECULAR RESOLUTION; HYDROGEN-PEROXIDE; CROSS-LINKS; DIFFERENTIATION; MESOPHYLL; GROWTH AB The chemical and structural organization of the plant cell wall was examined in Zinnia elegans tracheary elements (TEs), which specialize by developing prominent secondary wall thickenings underlying the primary wall during xylogenesis in vitro. Three imaging platforms were used in conjunction with chemical extraction of wall components to investigate the composition and structure of single Zinnia TEs. Using fluorescence microscopy with a green fluorescent protein-tagged Clostridium thermocellum family 3 carbohydrate-binding module specific for crystalline cellulose, we found that cellulose accessibility and binding in TEs increased significantly following an acidified chlorite treatment. Examination of chemical composition by synchrotron radiation-based Fourier-transform infrared spectromicroscopy indicated a loss of lignin and a modest loss of other polysaccharides in treated TEs. Atomic force microscopy was used to extensively characterize the topography of cell wall surfaces in TEs, revealing an outer granular matrix covering the underlying meshwork of cellulose fibrils. The internal organization of TEs was determined using secondary wall fragments generated by sonication. Atomic force microscopy revealed that the resulting rings, spirals, and reticulate structures were composed of fibrils arranged in parallel. Based on these combined results, we generated an architectural model of Zinnia TEs composed of three layers: an outermost granular layer, a middle primary wall composed of a meshwork of cellulose fibrils, and inner secondary wall thickenings containing parallel cellulose fibrils. In addition to insights in plant biology, studies using Zinnia TEs could prove especially productive in assessing cell wall responses to enzymatic and microbial degradation, thus aiding current efforts in lignocellulosic biofuel production. C1 [Lacayo, Catherine I.; Malkin, Alexander J.; Hwang, Mona S.; Thelen, Michael P.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA. [Holman, Hoi-Ying N.; Chen, Liang] Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. [Ding, Shi-You] Natl Renewable Energy Lab, Biosci Ctr, Golden, CO 80401 USA. [Ding, Shi-You] Oak Ridge Natl Lab, BioEnergy Sci Ctr, Oak Ridge, TN 37831 USA. [Thelen, Michael P.] Joint BioEnergy Inst, Emeryville, CA 94608 USA. RP Thelen, MP (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA. EM mthelen@llnl.gov RI Thelen, Michael/C-6834-2008; Chen, Liang/F-3496-2011; Ding, Shi-You/O-1209-2013; Holman, Hoi-Ying/N-8451-2014; Thelen, Michael/G-2032-2014 OI Thelen, Michael/0000-0002-2479-5480; Holman, Hoi-Ying/0000-0002-7534-2625; Thelen, Michael/0000-0002-2479-5480 FU U.S. Department of Energy [DE-AC52-07NA27344, DE-AC02-05CH11231]; Office of Biological and Environmental Research; BioEnergy Science Center, a Department of Energy BioEnergy Research Center FX This work was supported by the U.S. Department of Energy (contract nos. DE-AC52-07NA27344 and DE-AC02-05CH11231). Funding to M. P. T. and H.-Y.N.H. was from the Office of Biological and Environmental Research, Genome Sciences Program, and funding to S.-Y.D. was from the BioEnergy Science Center, a Department of Energy BioEnergy Research Center. Institution Paper Number LLNL-JRNL-424083. NR 70 TC 24 Z9 26 U1 4 U2 36 PU AMER SOC PLANT BIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 USA SN 0032-0889 J9 PLANT PHYSIOL JI Plant Physiol. PD SEP PY 2010 VL 154 IS 1 BP 121 EP 133 DI 10.1104/pp.110.155242 PG 13 WC Plant Sciences SC Plant Sciences GA 646VA UT WOS:000281570000010 PM 20592039 ER PT J AU Kim, D Han, H Kim, KM Park, JK Jeon, YM Na, YS Hong, SH AF Kim, Doohyun Han, Hyunsun Kim, Ki Min Park, Jong Kyu Jeon, Young Mu Na, Yong-Su Hong, Sang Hee TI Numerical simulation on edge localized mode control capability of resonant magnetic perturbation in the KSTAR tokamak SO PLASMA PHYSICS AND CONTROLLED FUSION LA English DT Article AB Numerical simulations are carried out to investigate the applicability of resonant magnetic perturbation (RMP) to KSTAR plasmas for a possible control of edge localized mode (ELM) to suppress or mitigate its damages to divertor materials. For the verification of the feasibility of RMP application, magnetic island configurations, resonant normal fields, magnetic island widths and Chirikov parameters are calculated for two types of KSTAR operation scenarios: steady state and hybrid. Field error correction (FEC) coils in KSTAR are considered to produce externally perturbed magnetic fields for RMP, and the directions of coil currents determine the toroidal mode n and the parity (even or odd). The RMP configurations are described by vacuum superposition of the equilibrium magnetic fields and the perturbed ones induced by FEC coils. The numerical simulations for n = 2 toroidal mode in both operation scenarios show that when the pitches of the equilibrium and perturbed magnetic fields are well aligned, magnetic islands are formed for a series of m poloidal modes and the adjacent islands are overlapped to generate a stochastic layer in the edge region. Even parity turns out to be more effective in making the magnetic islands overlapped to become stochastic field lines in the steady-state operation, while odd parity in the hybrid operation. The formation of the stochastic layer is verified by the calculated Chirikov parameters, which also give basic information on the current requirement of FEC coils. Additionally, lobe structures of stochastic field lines are found in the edge region extended to the divertor plate in the hybrid scenario. Based on the standard vacuum criteria for RMP, the simulation results indicate that the FEC coils will be feasible for control of ELMs and mitigation of divertor heat load by RMP in both steady-state and hybrid operation scenarios. C1 [Kim, Doohyun; Han, Hyunsun; Kim, Ki Min; Na, Yong-Su; Hong, Sang Hee] Seoul Natl Univ, Dept Nucl Engn, Seoul 151742, South Korea. [Park, Jong Kyu] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. [Jeon, Young Mu] Natl Fus Res Inst, Taejon 305333, South Korea. RP Kim, D (reprint author), Seoul Natl Univ, Dept Nucl Engn, Seoul 151742, South Korea. EM hongsh@snu.ac.kr FU Ministry of Education, Science and Technology [2009-0082634] FX The authors would like to thank Dr T E Evans of General Atomics (GA) in USA for his helpful comments on the heat flux spreading by lobe structures at low and high collisionality to value the results of this paper. This research was supported by the National R&D Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0082634). NR 23 TC 4 Z9 4 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0741-3335 J9 PLASMA PHYS CONTR F JI Plasma Phys. Control. Fusion PD SEP PY 2010 VL 52 IS 9 AR 095009 DI 10.1088/0741-3335/52/9/095009 PG 15 WC Physics, Fluids & Plasmas SC Physics GA 637VR UT WOS:000280847300010 ER PT J AU De Boer, RJ Ribeiro, RM Perelson, AS AF De Boer, Rob J. Ribeiro, Ruy M. Perelson, Alan S. TI Current Estimates for HIV-1 Production Imply Rapid Viral Clearance in Lymphoid Tissues SO PLOS COMPUTATIONAL BIOLOGY LA English DT Article ID IMMUNODEFICIENCY-VIRUS TYPE-1; FOLLICULAR DENDRITIC CELLS; IN-VIVO; ANTIRETROVIRAL THERAPY; TRANS-INFECTION; RHESUS MACAQUES; PLASMA; PARTICLES; DYNAMICS; ANTIGEN AB It has recently been estimated that a single HIV-1 infected cell produces between 10(3) and more than 10(4) viral particles over its life span. Since body-wide estimates of the ratio of free virus to productively infected cells are smaller than 10(3) and much smaller than 10(4), individual virions must be cleared rapidly. This seems difficult to reconcile with the fact that most of the total body virus is trapped on follicular dendritic cells where it can survive for many months. It has also been difficult to reconcile the vast difference in the rates at which the virus is cleared from the blood in rhesus macaques and in chronically infected patients. Here we attempt to reconcile these seemingly contradictory observations by considering the virion clearance rate in various organs and the virion exchange rates between them. The main results are that the per capita clearance rate of free virus in lymphoid tissue should be fast, the virion exchange rate between lymphoid tissue and the blood should be slow, and the comparatively slow previous estimates for the virion clearance rate from the blood correspond to the rate of virion efflux from the blood to other organs where the virus is ultimately cleared. C1 [De Boer, Rob J.] Univ Utrecht, Utrecht, Netherlands. [Ribeiro, Ruy M.; Perelson, Alan S.] Los Alamos Natl Lab, Los Alamos, NM USA. RP De Boer, RJ (reprint author), Univ Utrecht, Utrecht, Netherlands. EM r.j.deboer@uu.nl RI De Boer, Rob/B-6050-2011; OI De Boer, Rob/0000-0002-2130-691X; Ribeiro, Ruy/0000-0002-3988-8241 FU U.S. Department of Energy [DE-AC52-06NA25396]; NIH [AI28433, RR06555, P20-RR18754]; Netherlands Organisation for Scientific Research NWO [016.048.603] FX Portions of this work were done under the auspices of the U.S. Department of Energy under contract DE-AC52-06NA25396 and supported by NIH grants AI28433, RR06555, and P20-RR18754. RJDB thanks the Netherlands Organisation for Scientific Research NWO (VICI grant 016.048.603) for financial support. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 29 TC 37 Z9 38 U1 0 U2 3 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1553-734X J9 PLOS COMPUT BIOL JI PLoS Comput. Biol. PD SEP PY 2010 VL 6 IS 9 AR e1000906 DI 10.1371/journal.pcbi.1000906 PG 9 WC Biochemical Research Methods; Mathematical & Computational Biology SC Biochemistry & Molecular Biology; Mathematical & Computational Biology GA 656WU UT WOS:000282372600035 PM 20824126 ER PT J AU Skupsky, R Burnett, JC Foley, JE Schaffer, DV Arkin, AP AF Skupsky, Ron Burnett, John C. Foley, Jonathan E. Schaffer, David V. Arkin, Adam P. TI HIV Promoter Integration Site Primarily Modulates Transcriptional Burst Size Rather Than Frequency SO PLOS COMPUTATIONAL BIOLOGY LA English DT Article ID STOCHASTIC GENE-EXPRESSION; NF-KAPPA-B; VIRUS TYPE-1 PROMOTER; SINGLE-CELL; CHROMATIN ORGANIZATION; QUANTITATIVE MODEL; HUMAN GENOME; NOISE; TAT; REVEALS AB Mammalian gene expression patterns, and their variability across populations of cells, are regulated by factors specific to each gene in concert with its surrounding cellular and genomic environment. Lentiviruses such as HIV integrate their genomes into semi-random genomic locations in the cells they infect, and the resulting viral gene expression provides a natural system to dissect the contributions of genomic environment to transcriptional regulation. Previously, we showed that expression heterogeneity and its modulation by specific host factors at HIV integration sites are key determinants of infected-cell fate and a possible source of latent infections. Here, we assess the integration context dependence of expression heterogeneity from diverse single integrations of a HIV-promoter/GFP-reporter cassette in Jurkat T-cells. Systematically fitting a stochastic model of gene expression to our data reveals an underlying transcriptional dynamic, by which multiple transcripts are produced during short, infrequent bursts, that quantitatively accounts for the wide, highly skewed protein expression distributions observed in each of our clonal cell populations. Interestingly, we find that the size of transcriptional bursts is the primary systematic covariate over integration sites, varying from a few to tens of transcripts across integration sites, and correlating well with mean expression. In contrast, burst frequencies are scattered about a typical value of several per cell-division time and demonstrate little correlation with the clonal means. This pattern of modulation generates consistently noisy distributions over the sampled integration positions, with large expression variability relative to the mean maintained even for the most productive integrations, and could contribute to specifying heterogeneous, integration-site-dependent viral production patterns in HIV-infected cells. Genomic environment thus emerges as a significant control parameter for gene expression variation that may contribute to structuring mammalian genomes, as well as be exploited for survival by integrating viruses. C1 [Skupsky, Ron; Schaffer, David V.; Arkin, Adam P.] Univ Calif Berkeley, Calif Inst Quantitat Biosci, Berkeley, CA 94720 USA. [Burnett, John C.; Schaffer, David V.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Burnett, John C.; Schaffer, David V.] Univ Calif Berkeley, Helen Wills Neurosci Inst, Berkeley, CA 94720 USA. [Foley, Jonathan E.] Univ Calif Berkeley, UCB UCSF, Joint Grad Grp Bioengn, Berkeley, CA 94720 USA. [Schaffer, David V.; Arkin, Adam P.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. [Arkin, Adam P.] Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA USA. RP Skupsky, R (reprint author), Univ Calif Berkeley, Calif Inst Quantitat Biosci, Berkeley, CA 94720 USA. EM schaffer@berkeley.edu; aparkin@lbl.gov RI Arkin, Adam/A-6751-2008; OI Arkin, Adam/0000-0002-4999-2931; Burnett, John/0000-0002-8817-6064 FU NIH [R01-GM073058] FX This work was supported by NIH R01-GM073058. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 89 TC 35 Z9 35 U1 0 U2 5 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1553-734X J9 PLOS COMPUT BIOL JI PLoS Comput. Biol. PD SEP PY 2010 VL 6 IS 9 AR e1000952 DI 10.1371/journal.pcbi.1000952 PG 14 WC Biochemical Research Methods; Mathematical & Computational Biology SC Biochemistry & Molecular Biology; Mathematical & Computational Biology GA 656WU UT WOS:000282372600006 ER PT J AU Bart, RS Chern, M Vega-Sanchez, ME Canlas, P Ronald, PC AF Bart, Rebecca S. Chern, Mawsheng Vega-Sanchez, Miguel E. Canlas, Patrick Ronald, Pamela C. TI Rice Snl6, a Cinnamoyl-CoA Reductase-Like Gene Family Member, Is Required for NH1-Mediated Immunity to Xanthomonas oryzae pv. oryzae SO PLOS GENETICS LA English DT Article ID SYSTEMIC ACQUIRED-RESISTANCE; FEATURE POLYMORPHISM DISCOVERY; XA21-MEDIATED INNATE IMMUNITY; LESION MIMIC MUTANTS; ARABIDOPSIS-THALIANA; DISEASE RESISTANCE; NEGATIVE REGULATOR; DOWN-REGULATION; ALCOHOL-DEHYDROGENASE; SALICYLIC-ACID AB Rice NH1 (NPR1 homolog 1) is a key mediator of innate immunity. In both plants and animals, the innate immune response is often accompanied by rapid cell death at the site of pathogen infection. Over-expression of NH1 in rice results in resistance to the bacterial pathogen, Xanthomonas oryzae pv. oryzae (Xoo), constitutive expression of defense related genes and enhanced benzothiadiazole (BTH)- mediated cell death. Here we describe a forward genetic screen that identified a suppressor of NH1-mediated lesion formation and resistance, snl6. Comparative genome hybridization and fine mapping rapidly identified the genomic location of the Snl6 gene. Snl6 is a member of the cinnamoyl-CoA reductase (CCR)-like gene family. We show that Snl6 is required for NH1-mediated resistance to Xoo. Further, we show that Snl6 is required for pathogenesis-related gene expression. In contrast to previously described CCR family members, disruption of Snl6 does not result in an obvious morphologic phenotype. Snl6 mutants have reduced lignin content and increased sugar extractability, an important trait for the production of cellulosic biofuels. These results suggest the existence of a conserved group of CCR-like genes involved in the defense response, and with the potential to alter lignin content without affecting development. C1 [Bart, Rebecca S.; Chern, Mawsheng; Vega-Sanchez, Miguel E.; Canlas, Patrick; Ronald, Pamela C.] Univ Calif Davis, Dept Plant Pathol, Davis, CA 95616 USA. [Bart, Rebecca S.; Chern, Mawsheng; Vega-Sanchez, Miguel E.; Canlas, Patrick; Ronald, Pamela C.] Joint Bioenergy Inst, Emeryville, CA USA. RP Bart, RS (reprint author), Univ Calif Davis, Dept Plant Pathol, Davis, CA 95616 USA. EM pcronald@ucdavis.edu RI Vega-Sanchez, Miguel/K-3072-2012; Bart, Rebecca/M-2838-2013; OI Vega-Sanchez, Miguel/0000-0003-0128-2743; Bart, Rebecca/0000-0003-1378-3481 FU William G. and Kathleen Golden International Agriculture Fellowship; UC Davis Consortium for Women; D. Marlin Brandon Fellowship; Henry A. Jastro and Peter J. Shields Graduate Research Scholarship; NIH [2-R01-GM055962-09]; DOE [DE-AC02-05CH11231]; USDA [2004-63560416640]; U. S. Department of Energy, Office of Science, Office of Biological and Environmental Research [DE-AC02-05CH11231]; Lawrence Berkeley National Laboratory; U. S. Department of Energy FX RSB has been supported by a William G. and Kathleen Golden International Agriculture Fellowship, UC Davis Consortium for Women in Research Fellowship, D. Marlin Brandon Fellowship and a Henry A. Jastro and Peter J. Shields Graduate Research Scholarship. This research was supported by NIH (2-R01-GM055962-09), DOE (DE-AC02-05CH11231) and USDA (Functional Genomics of Agriculturally Important Organisms, #2004-63560416640). This work was part of the DOE Joint BioEnergy Institute (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 funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 50 TC 17 Z9 17 U1 2 U2 12 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1553-7404 J9 PLOS GENET JI PLoS Genet. PD SEP PY 2010 VL 6 IS 9 AR e1001123 DI 10.1371/journal.pgen.1001123 PG 10 WC Genetics & Heredity SC Genetics & Heredity GA 656VM UT WOS:000282369200029 PM 20862311 ER PT J AU Suen, G Scott, JJ Aylward, FO Adams, SM Tringe, SG Pinto-Tomas, AA Foster, CE Pauly, M Weimer, PJ Barry, KW Goodwin, LA Bouffard, P Li, L Osterberger, J Harkins, TT Slater, SC Donohue, TJ Currie, CR AF Suen, Garret Scott, Jarrod J. Aylward, Frank O. Adams, Sandra M. Tringe, Susannah G. Pinto-Tomas, Adrian A. Foster, Clifton E. Pauly, Markus Weimer, Paul J. Barry, Kerrie W. Goodwin, Lynne A. Bouffard, Pascal Li, Lewyn Osterberger, Jolene Harkins, Timothy T. Slater, Steven C. Donohue, Timothy J. Currie, Cameron R. TI An Insect Herbivore Microbiome with High Plant Biomass-Degrading Capacity SO PLOS GENETICS LA English DT Article ID LEAF-CUTTING ANTS; COMPARATIVE METAGENOMICS; BACTERIAL COMMUNITY; FUNGUS GARDENS; GUT MICROBIOME; SEQUENCE DATA; GENE; DATABASE; DIVERSITY; CELLULOSE AB Herbivores can gain indirect access to recalcitrant carbon present in plant cell walls through symbiotic associations with lignocellulolytic microbes. A paradigmatic example is the leaf-cutter ant (Tribe:Attini), which uses fresh leaves to cultivate a fungus for food in specialized gardens. Using a combination of sugar composition analyses, metagenomics, and whole-genome sequencing, we reveal that the fungus garden microbiome of leaf-cutter ants is composed of a diverse community of bacteria with high plant biomass-degrading capacity. Comparison of this microbiome's predicted carbohydrate-degrading enzyme profile with other metagenomes shows closest similarity to the bovine rumen, indicating evolutionary convergence of plant biomass degrading potential between two important herbivorous animals. Genomic and physiological characterization of two dominant bacteria in the fungus garden microbiome provides evidence of their capacity to degrade cellulose. Given the recent interest in cellulosic biofuels, understanding how large-scale and rapid plant biomass degradation occurs in a highly evolved insect herbivore is of particular relevance for bioenergy. C1 [Suen, Garret; Scott, Jarrod J.; Aylward, Frank O.; Adams, Sandra M.; Foster, Clifton E.; Pauly, Markus; Slater, Steven C.; Donohue, Timothy J.; Currie, Cameron R.] Univ Wisconsin Madison, Dept Energy, Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA. [Suen, Garret; Scott, Jarrod J.; Aylward, Frank O.; Adams, Sandra M.; Donohue, Timothy J.; Currie, Cameron R.] Univ Wisconsin Madison, Dept Bacteriol, Madison, WI USA. [Scott, Jarrod J.; Currie, Cameron R.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Tringe, Susannah G.; Barry, Kerrie W.; Goodwin, Lynne A.] Joint Genome Inst, Dept Energy, Walnut Creek, CA USA. [Pinto-Tomas, Adrian A.] Univ Costa Rica, Dept Bioquim, Fac Med, San Jose, Costa Rica. [Pinto-Tomas, Adrian A.] Univ Costa Rica, Ctr Invest Estruct Microscopicas, San Jose, Costa Rica. [Foster, Clifton E.] Michigan State Univ, Dept Biochem & Mol Biol, E Lansing, MI 48824 USA. [Pauly, Markus] Michigan State Univ, Dept Energy, Plant Res Lab, E Lansing, MI 48824 USA. [Weimer, Paul J.] USDA ARS, US Dairy Forage Res Ctr, Madison, WI 53706 USA. [Goodwin, Lynne A.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Bouffard, Pascal; Li, Lewyn] 454 Life Sci, Branford, CT USA. [Osterberger, Jolene; Harkins, Timothy T.] Roche Appl Sci, Roche Diagnost, Indianapolis, IN USA. RP Suen, G (reprint author), Univ Wisconsin Madison, Dept Energy, Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA. EM currie@bact.wisc.edu RI Pauly, Markus/B-5895-2008; OI Pauly, Markus/0000-0002-3116-2198; Suen, Garret/0000-0002-6170-711X; Tringe, Susannah/0000-0001-6479-8427; Donohue, Timothy/0000-0001-8738-2467 FU DOE Great Lakes Bioenergy Research Center [DE-FC02-07ER64494]; National Science Foundation [DEB-0747002, MCB-0702025, MCB-0731822]; Smithsonian Institution Predoctoral Fellowship; Organization for Tropical Studies Research Fellowship; USDA-ARS [3655-41000-005-00D]; US Department of Energy Joint Genome Institute; Office of Science of the US Department of Energy [DE-AC02-05CH11231]; Roche Diagnostics FX This work was funded by the DOE Great Lakes Bioenergy Research Center (DOE BER Office of Science DE-FC02-07ER64494) supporting GS, JJS, FOA, SMA, CEF, MP, SCS, TJD, and CRC. This work was also supported by the National Science Foundation grants DEB-0747002, MCB-0702025, and MCB-0731822 to CRC; a Smithsonian Institution Predoctoral Fellowship supporting JJS; an Organization for Tropical Studies Research Fellowship supporting AAP-T; and a USDA-ARS CRIS project 3655-41000-005-00D supporting PJW. The work conducted by the US Department of Energy Joint Genome Institute is supported by the Office of Science of the US Department of Energy under Contract No. DE-AC02-05CH11231. This work was made possible by a small sequencing grant from Roche Diagnostics. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 62 TC 77 Z9 77 U1 10 U2 79 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1553-7404 J9 PLOS GENET JI PLoS Genet. PD SEP PY 2010 VL 6 IS 9 AR e1001129 DI 10.1371/journal.pgen.1001129 PG 14 WC Genetics & Heredity SC Genetics & Heredity GA 656VM UT WOS:000282369200010 PM 20885794 ER PT J AU Reganold, JP Andrews, PK Reeve, JR Carpenter-Boggs, L Schadt, CW Alldredge, JR Ross, CF Davies, NM Zhou, JZ AF Reganold, John P. Andrews, Preston K. Reeve, Jennifer R. Carpenter-Boggs, Lynne Schadt, Christopher W. Alldredge, J. Richard Ross, Carolyn F. Davies, Neal M. Zhou, Jizhong TI Fruit and Soil Quality of Organic and Conventional Strawberry Agroecosystems SO PLOS ONE LA English DT Article ID METHYL-BROMIDE ALTERNATIVES; TOTAL ANTIOXIDANT ACTIVITY; NUTRITIONAL QUALITY; MICROBIAL COMMUNITIES; ENZYME-ACTIVITIES; FOOD; AGRICULTURE; BIODIVERSITY; PERFORMANCE; MICROARRAY AB Background: Sale of organic foods is one of the fastest growing market segments within the global food industry. People often buy organic food because they believe organic farms produce more nutritious and better tasting food from healthier soils. Here we tested if there are significant differences in fruit and soil quality from 13 pairs of commercial organic and conventional strawberry agroecosystems in California. Methodology/Principal Findings: At multiple sampling times for two years, we evaluated three varieties of strawberries for mineral elements, shelf life, phytochemical composition, and organoleptic properties. We also analyzed traditional soil properties and soil DNA using microarray technology. We found that the organic farms had strawberries with longer shelf life, greater dry matter, and higher antioxidant activity and concentrations of ascorbic acid and phenolic compounds, but lower concentrations of phosphorus and potassium. In one variety, sensory panels judged organic strawberries to be sweeter and have better flavor, overall acceptance, and appearance than their conventional counterparts. We also found the organically farmed soils to have more total carbon and nitrogen, greater microbial biomass and activity, and higher concentrations of micronutrients. Organically farmed soils also exhibited greater numbers of endemic genes and greater functional gene abundance and diversity for several biogeochemical processes, such as nitrogen fixation and pesticide degradation. Conclusions/Significance: Our findings show that the organic strawberry farms produced higher quality fruit and that their higher quality soils may have greater microbial functional capability and resilience to stress. These findings justify additional investigations aimed at detecting and quantifying such effects and their interactions. C1 [Reganold, John P.] Washington State Univ, Dept Crop & Soil Sci, Pullman, WA 99164 USA. [Andrews, Preston K.] Washington State Univ, Dept Hort & Landscape Architecture, Pullman, WA 99164 USA. [Reeve, Jennifer R.] Utah State Univ, Dept Plants Soils & Climate, Logan, UT 84322 USA. [Carpenter-Boggs, Lynne] Washington State Univ, Ctr Sustaining Agr & Nat Resources, Pullman, WA 99164 USA. [Schadt, Christopher W.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN USA. [Alldredge, J. Richard] Washington State Univ, Dept Stat, Pullman, WA 99164 USA. [Ross, Carolyn F.] Washington State Univ, Sch Food Sci, Pullman, WA 99164 USA. [Davies, Neal M.] Washington State Univ, Dept Pharmaceut Sci, Pullman, WA 99164 USA. [Zhou, Jizhong] Univ Oklahoma, Dept Bot & Microbiol, Inst Environm Genom, Norman, OK 73019 USA. RP Reganold, JP (reprint author), Washington State Univ, Dept Crop & Soil Sci, Pullman, WA 99164 USA. EM reganold@wsu.edu RI Reeve, Jennifer /G-7148-2011; Schadt, Christopher/B-7143-2008 OI Schadt, Christopher/0000-0001-8759-2448 FU United States Department of Agriculture through the National Science Foundation/U.S. Department of Agriculture Microbial Observatories Program; Department of Energy Office of Biological and Environmental Research; Organic Center FX The project was supported by the United States Department of Agriculture through the National Science Foundation/U.S. Department of Agriculture Microbial Observatories Program, the Department of Energy Office of Biological and Environmental Research, and The Organic Center. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 74 TC 40 Z9 40 U1 3 U2 95 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD SEP 1 PY 2010 VL 5 IS 9 AR e12346 DI 10.1371/journal.pone.0012346 PG 14 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 645KT UT WOS:000281456100001 ER PT J AU Li, DS Liu, ZY Al-Haik, M Tehrani, M Murray, F Tannenbaum, R Garmestani, H AF Li, Dongsheng Liu, Zuyan Al-Haik, Marwan Tehrani, Mehran Murray, Frank Tannenbaum, Rina Garmestani, Hamid TI Magnetic alignment of cellulose nanowhiskers in an all-cellulose composite SO POLYMER BULLETIN LA English DT Article DE Cellulose nanowhiskers; Unidirectional; Magnetic alignment; Nanocomposite; All-cellulose ID MECHANICAL-PROPERTIES; WHEAT-STRAW; ORIENTATION; MICROCRYSTALS; SUSPENSIONS; WHISKERS; PHASE; FIELD AB Unidirectional reinforced nanocomposite paper was fabricated from cellulose nanowhiskers and wood pulp under an externally applied magnetic field. A 1.2 Tesla magnetic field was applied in order to align the nanowhiskers in the pulp as it was being formed into a sheet of paper. The magnetic alignment was driven by the characteristic negative diamagnetic anisotropy of the cellulose nanowhiskers. ESEM micrographs demonstrated unidirectional alignment of the nanowhiskers in the all-cellulose composite paper. Comparing with control paper sheets made from wood pulp only, the storage modulus in the all-cellulose nanocomposites increased dramatically. The storage modulus along the direction perpendicular to the magnetic field was much stronger than that parallel to the magnetic field. This new nanocomposite, which contains preferentially oriented microstructures and has improved mechanical properties, demonstrates the possibility of expanding the functionality of paper products and constitutes a promising alternative to hydrocarbon based materials and fibers. C1 [Li, Dongsheng] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. [Liu, Zuyan; Tannenbaum, Rina; Garmestani, Hamid] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. [Al-Haik, Marwan; Tehrani, Mehran] Virginia Polytech Inst & State Univ, Dept Engineer Sci & Mech, Blacksburg, VA 24061 USA. [Murray, Frank] Inst Paper Sci & Technol, Atlanta, GA 30332 USA. RP Li, DS (reprint author), Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. EM dongsheng.li@pnl.gov RI Li, Debiao/B-7622-2009; Al-Haik, Marwan/L-7732-2014 OI Al-Haik, Marwan/0000-0001-7465-0274 FU Institute of Paper Science and Technology (IPST) at Georgia Institute of Technology [1806E42] FX This research was supported by Institute of Paper Science and Technology (IPST) at Georgia Institute of Technology under contract No. 1806E42. Also helpful assistance of Issak Rudman from IPST is highly appreciated. NR 17 TC 23 Z9 25 U1 4 U2 42 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0170-0839 J9 POLYM BULL JI Polym. Bull. PD SEP PY 2010 VL 65 IS 6 BP 635 EP 642 DI 10.1007/s00289-010-0276-z PG 8 WC Polymer Science SC Polymer Science GA 638UI UT WOS:000280921800009 ER PT J AU Bernstein, R Gillen, KT AF Bernstein, R. Gillen, K. T. TI Nylon 6.6 accelerating aging studies: II. Long-term thermal-oxidative and hydrolysis results SO POLYMER DEGRADATION AND STABILITY LA English DT Article DE Nylon; Humidity; Thermal-oxidative; Arrhenius evaluation; Field aging; Tensile studies ID NON-ARRHENIUS BEHAVIOR; LIFETIME PREDICTION; GLASS-TRANSITION; DEGRADATION; TEMPERATURE; EXTRAPOLATION; FILMS; WATER AB Long-term (greater than 5 year exposures), low-temperature (as low as 37 degrees C) accelerated oven aging results were obtained for Nylon 6.6 fibers under thermo-oxidative conditions (air aging with an oxygen partial pressure of 13.2 cmHg in Albuquerque). To assess the importance of humidity on aging, experiments were also conducted under a combination of 100% RH plus 13.2 cmHg of oxygen partial pressure at temperatures ranging from 138 degrees C to 64 degrees C plus an additional experiment at 70% RH and 80 degrees C. The low-temperature tensile strength results showed that the Arrhenius activation energy under the pure oxidative degradation conditions dropped from similar to 96 kJ/mol above similar to 100 degrees C-similar to 30 kJ/mol below this temperature, indicative of a transition in the oxidative chemistry at low temperatures. Earlier work by our group on the same material concluded that hydrolytic degradation effects dominated oxidation effects at higher aging temperatures. However, the current long-term, low-temperature comparisons lead to the conclusion that humidity is not an important aging factor below 50 degrees C. By extrapolating time-temperature superposed oxidative degradation data using the low-temperature activation energy, we obtain predictions at 21 degrees C. At this temperature, we estimate that a tensile strength loss of 50% takes on the order of 70 years. The 21 degrees C predictions are shown to be reasonably consistent with long-term (up to 38 year) ambient results on similar Nylon materials removed from field-aged parachutes. Although the estimated average exposure temperature varies from parachute to parachute, the highest average temperature is estimated to be on the order of 21 degrees C. (C) 2010 Elsevier Ltd. All rights reserved, C1 [Bernstein, R.; Gillen, K. T.] Sandia Natl Labs, Organ Mat Dept, Albuquerque, NM 87185 USA. RP Bernstein, R (reprint author), Sandia Natl Labs, Organ Mat Dept, POB 5800,MS 0888, Albuquerque, NM 87185 USA. EM rbernst@sandia.gov FU United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX The authors wish to thank Dora K. Derzon for her help in obtaining the tensile strength data. 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 23 TC 18 Z9 20 U1 4 U2 30 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0141-3910 J9 POLYM DEGRAD STABIL JI Polym. Degrad. Stabil. PD SEP PY 2010 VL 95 IS 9 BP 1471 EP 1479 DI 10.1016/j.polymdegradstab.2010.06.018 PG 9 WC Polymer Science SC Polymer Science GA 644IV UT WOS:000281369500005 ER PT J AU Wenk, HR Lutterotti, L Vogel, SC AF Wenk, H. -R. Lutterotti, L. Vogel, S. C. TI Rietveld texture analysis from TOF neutron diffraction data SO POWDER DIFFRACTION LA English DT Article DE texture analysis; neutron diffraction; Rietveld method; quartzite ID POWDER DIFFRACTION; PREFERRED ORIENTATION; MAGNETIC-STRUCTURE; DIFFRACTOMETER; REFINEMENT; HIPPO; SPECTRA; SIZE; DISTRIBUTIONS; SPECTROMETER AB One of the advantages of a multidetector neutron time-of-flight diffractometer such as the high pressure preferred orientation diffractometer (HIPPO) at the Los Alamos Neutron Science Center is the capability to measure efficiently preferred orientation of bulk materials. A routine experimental method for measurements, both at ambient conditions, as well as high or low temperatures, has been established. However, only recently has the complex data analysis been streamlined to make it straightforward for a noninitiated user. Here, we describe the Rietveld texture analysis of HIPPO data with the computer code Materials Analysis Using Diffraction (MAUD) as a step-by-step procedure and illustrate it with a metamorphic quartz rock. Postprocessing of the results is described and neutron diffraction results are compared with electron backscatter diffraction measurements on the same sample. (C) 2010 International Centre for Diffraction Data. [DOI: 10.1154/1.3479004] C1 [Wenk, H. -R.] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Lutterotti, L.] Univ Trent, I-38123 Trento, Italy. [Vogel, S. C.] Los Alamos Natl Lab, Lujan Ctr, LANSCE, Los Alamos, NM 87545 USA. RP Wenk, HR (reprint author), Univ Calif Berkeley, Berkeley, CA 94720 USA. EM wenk@berkeley.edu RI Lujan Center, LANL/G-4896-2012; Lutterotti, Luca/E-2426-2014; OI Lutterotti, Luca/0000-0002-0949-8322; Vogel, Sven C./0000-0003-2049-0361 FU UCOP; NSF [EAR 0836402]; DOE [DE-FG02-05ER15637]; CDAC; Office of Basic Energy Sciences, U.S. Department of Energy; Los Alamos National Security LLC under DOE [DE-AC52-06NA25396] FX Part of this procedure was developed for the Third HIPPO in December 2006 at U.C. Berkeley, supported by the UCOP-CLC program to foster Campus Laboratory collaboration. It has since then been greatly expanded based on valuable input from many users. Support was also obtained from NSF (Grant No. EAR 0836402), DOE (Grant No. DE-FG02-05ER15637), and CDAC. This work has benefited from the use of the Lujan Neutron Scattering Center at LAN-SCE, which is funded by the Office of Basic Energy Sciences, U.S. Department of Energy. Los Alamos National Laboratory is operated by Los Alamos National Security LLC under DOE Contract No. DE-AC52-06NA25396. We appreciate help from Pamela Kaercher and Adrian Losko. NR 60 TC 53 Z9 54 U1 5 U2 34 PU J C P D S-INT CENTRE DIFFRACTION DATA PI NEWTOWN SQ PA 12 CAMPUS BLVD, NEWTOWN SQ, PA 19073-3273 USA SN 0885-7156 J9 POWDER DIFFR JI Powder Diffr. PD SEP PY 2010 VL 25 IS 3 BP 283 EP 296 DI 10.1154/1.3479004 PG 14 WC Materials Science, Characterization & Testing SC Materials Science GA 657BP UT WOS:000282386500012 ER PT J AU Li, W Blau, PJ Qu, J Park, SJ German, RM AF Li, W. Blau, P. J. Qu, J. Park, S. J. German, Randall M. TI Tribological behaviour of die tool materials used for die compaction in powder metallurgy SO POWDER METALLURGY LA English DT Article DE Tribology; Tool material; Powder; Wear work; Modelling ID WEAR AB A die wear model based on 'wear work' is put forward for use on die compaction tooling used in powder metallurgy. The model relies on integration of the frictional stress multiplied by velocity with respect to contact area and time. Two specially modified ASTM tribology tests, a pin-on-flat reciprocating test (one test per experimental point) and a continuous loop abrasion test (two tests per experimental point) were utilised to measure the wear on three candidate die materials. Mass loss and dimensional change of test specimens were used to quantify the wear. Based on the test results, a material property dependent constant was calculated for use in the new wear work model. Three different die materials were tested against two types of abrasive hard particles and two types of abrasive tapes. The wear resistance ranking of the three die materials is: WC >> 10%V tool steel>CPM T15 tool steel. C1 [Li, W.; German, Randall M.] San Diego State Univ, Coll Engn, San Diego, CA 92182 USA. [Blau, P. J.; Qu, J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. [German, Randall M.] Pohang Univ Sci & Technol, Dept Mech Engn, Pohang 790784, Kyeongbuk, South Korea. RP Li, W (reprint author), San Diego State Univ, Coll Engn, 5500 Campanile Dr, San Diego, CA 92182 USA. EM wli@mail.sdsu.edu OI German, Randall/0000-0002-5676-8532; Qu, Jun/0000-0001-9466-3179 FU Oak Ridge National Laboratory, Office of Energy Efficiency and Renewable Energy, US Department of Energy; [DE-AC05-00OR22725] FX This research at the High Temperature Materials Laboratory of Oak Ridge National Laboratory was sponsored by the Vehicle Technologies Program at Oak Ridge National Laboratory, Office of Energy Efficiency and Renewable Energy, US Department of Energy, which is managed by UT-Battelle, LLC, under contract no. DE-AC05-00OR22725. NR 16 TC 1 Z9 1 U1 0 U2 2 PU MANEY PUBLISHING PI LEEDS PA STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND SN 0032-5899 J9 POWDER METALL JI Powder Metall. PD SEP PY 2010 VL 53 IS 3 BP 251 EP 259 DI 10.1179/003258909X12502872942453 PG 9 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA 649FS UT WOS:000281754100022 ER PT J AU Cadwallader, LC Eide, SA AF Cadwallader, L. C. Eide, S. A. TI Component Failure Rate Data Sources for Probabilistic Safety and Reliability SO PROCESS SAFETY PROGRESS LA English DT Article DE failure rate; component; data source ID POWER-GENERATION; HVAC COMPONENTS; SYSTEM AB Probabilistic safety methods, which are being used in the chemical, manufacturing, and energy industries, create a basic need for input data CM failure rates of the mechanical, electrical, instrumentation and control. and other components that comprise the engineering systems in a facility Some companies have data stored and easy to retrieve Other companies hire consultants who use their own databases to perform safety assessments For analysts who do not have either of these options available, this article presents data sources that are retrievable from the literature The accessibility of data documents via the Internet is also described (C) 2010 American Institute of Chemical Engineers Process Sal Prog 29 236-241, 2010 C1 [Cadwallader, L. C.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Eide, S. A.] Scientech, Idaho Falls, ID 83401 USA. RP Cadwallader, LC (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA. RI Cadwallader, Lee/F-6933-2014 FU US Department of Energy [DE-AC07-051D14517] FX This work supported by the US Department of Energy. ([DE-AC07-051D14517]) NR 41 TC 6 Z9 6 U1 1 U2 3 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 1066-8527 J9 PROCESS SAF PROG JI Process Saf. Prog. PD SEP PY 2010 VL 29 IS 3 BP 236 EP 241 DI 10.1002/prs.10372 PG 6 WC Engineering, Chemical SC Engineering GA 640YR UT WOS:000281090700010 ER PT J AU Siebentritt, S Igalson, M Persson, C Lany, S AF Siebentritt, Susanne Igalson, Malgorzata Persson, Clas Lany, Stephan TI The electronic structure of chalcopyrites-bands, point defects and grain boundaries SO PROGRESS IN PHOTOVOLTAICS LA English DT Article DE chalcopyrites; electronic structure; defects; metastabilities; grain boundaries ID HETEROJUNCTION SOLAR-CELLS; CU(IN,GA)SE-2 THIN-FILMS; PROBE FORCE MICROSCOPY; OPEN-CIRCUIT VOLTAGE; PERSISTENT PHOTOCONDUCTIVITY; ELECTRICAL CHARACTERISTICS; DX-CENTERS; PARAMAGNETIC-RESONANCE; PHOTOVOLTAIC DEVICES; OPTICAL-PROPERTIES AB We summarize the progress made recently in understanding the electronic structure of chalcopyrites. New insights into the dispersion of valence and conduction band allow conclusions on the effective masses of charge carriers and their orientation dependence, which influences the transport in solar cell absorbers of different orientation. Native point defects are responsible for the doping and thus the band bending in solar cells. Results of optoelectronic defect spectroscopy are reviewed. Native defects are also the source for a number of metastabilities, which strongly affect the efficiency of solar cells. Recent theoretical findings relate these effects to the Se vacancy and the In-Cu antisite defect. Experimentally determined activation energies support these models. Absorbers in chalcopyrite solar cells are polycrystalline, which is only possible because of the benign character of the grain boundaries. This can be related to an unusual electronic structure of the GB. Copyright (C) 2010 John Wiley & Sons, Ltd. C1 [Siebentritt, Susanne] Univ Luxembourg, Luxembourg, Luxembourg. [Igalson, Malgorzata] Warsaw Univ Technol, PL-00661 Warsaw, Poland. [Persson, Clas] Royal Inst Technol, Stockholm, Sweden. [Lany, Stephan] Natl Renewable Energy Lab, Golden, CO USA. RP Siebentritt, S (reprint author), Univ Luxembourg, Luxembourg, Luxembourg. EM susanne.siebentritt@uni.lu OI Lany, Stephan/0000-0002-8127-8885 NR 132 TC 118 Z9 118 U1 11 U2 100 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 SEP PY 2010 VL 18 IS 6 BP 390 EP 410 DI 10.1002/pip.936 PG 21 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 654EA UT WOS:000282150100002 ER PT J AU Niki, S Contreras, M Repins, I Powalla, M Kushiya, K Ishizuka, S Matsubara, K AF Niki, Shigeru Contreras, Miguel Repins, Ingrid Powalla, Michael Kushiya, Katsumi Ishizuka, Shogo Matsubara, Koji TI CIGS absorbers and processes SO PROGRESS IN PHOTOVOLTAICS LA English DT Article DE CIGS; manufacturing; co-evaporation; selenization; flexible solar cells ID FILM SOLAR-CELLS; FLEXIBLE CU(IN,GA)SE-2; NA INCORPORATION; THIN-FILMS; EFFICIENCY; MODULES; FOILS AB The current status and future perspectives of Cu(In(1-x)Ga(x))Se(2) (CIGS) solar cells and modules will be discussed in this paper. The conversion efficiencies of the state of the art laboratory-scale CIGS solar cells exceeded 20%, which are comparable to those of crystalline Si solar cells. The requirements on the properties of CIGS absorbers to achieve such high efficiencies will be described. The CIGS modules are already commercially available based on two major CIGS deposition techniques such as co-evaporation and selenization. The current status, problems, and prospects of co-evaporation and selenization will also be discussed. High-efficiency flexible CIGS solar cells with efficiencies similar to those fabricated on soda-lime glass (SLG) substrates have been achieved by developing a novel Na incorporation technique. Critical issues to demonstrate high-efficiency flexible solar cells will also be discussed. Copyright (C) 2010 John Wiley & Sons, Ltd. C1 [Niki, Shigeru; Ishizuka, Shogo; Matsubara, Koji] Natl Inst Adv Ind Sci & Technol, Res Ctr Photovolta, Ibaraki 3058568, Japan. [Contreras, Miguel; Repins, Ingrid] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Powalla, Michael] Ctr Solar Energy & Hydrogen Res ZSW, D-70565 Stuttgart, Germany. [Kushiya, Katsumi] CIS Dev Grp, New Business Dev Div, Kanagawa 2430206, Japan. RP Niki, S (reprint author), Natl Inst Adv Ind Sci & Technol, Res Ctr Photovolta, 1-1-1 Umezono, Ibaraki 3058568, Japan. EM shigeru-niki@aist.go.jp NR 66 TC 198 Z9 204 U1 15 U2 189 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1062-7995 J9 PROG PHOTOVOLTAICS JI Prog. Photovoltaics PD SEP PY 2010 VL 18 IS 6 BP 453 EP 466 DI 10.1002/pip.969 PG 14 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 654EA UT WOS:000282150100005 ER PT J AU Scheer, R Perez-Rodriguez, A Metzger, WK AF Scheer, Roland Perez-Rodriguez, Alejandro Metzger, Wyatt K. TI Advanced diagnostic and control methods of processes and layers in CIGS solar cells and modules SO PROGRESS IN PHOTOVOLTAICS LA English DT Article DE chalcopyrite; Cu(In,Ga)Se-2; thin film; solar cell; Raman; photoluminescence; light scattering ID CU(IN,GA)SE-2 THIN-FILMS; TIME-RESOLVED PHOTOLUMINESCENCE; X-RAY-DIFFRACTION; CU-IN PRECURSORS; REAL-TIME; RAMAN-SPECTROSCOPY; LIGHT-SCATTERING; PHASE-TRANSFORMATIONS; ELECTRODEPOSITED CUINSE2; STRUCTURAL-ANALYSIS AB Process monitoring and quality assessment for Cu(In,Ga)(Se,S)(2) (CIGS) absorber layers is discussed. One focus is on laser light scattering (LLS) as a tool for process diagnostics. This technique can give in situ and real-time information about CIGS film growth using sequential as well as evaporation processes. Raman spectroscopy is presented as a method to assess the fundamental structural properties of as-grown films. Experience shows that the specific structure of Raman lines can be interpreted in relation to device performance. Raman spectroscopy is particularly useful for material development and achieving at least average solar cell efficiencies. Time-resolved photoluminescence (TRPL) goes one step further and is generally related to the solar cell performance. It tracks carrier population decay after optical excitation and thus gives quantitative information about the most efficient recombination channels and material quality. It is apt to optimise the absorber of highly efficient devices. We will recommend how to use the three methods appropriately and will discuss requirements for industrial applications. Copyright (C) 2010 John Wiley & Sons, Ltd. C1 [Scheer, Roland] Helmholtz Zentrum Berlin, D-14109 Berlin, Germany. [Perez-Rodriguez, Alejandro] Univ Barcelona, Dept Elect, XaRMAE IN2UB, E-08028 Barcelona, Spain. [Perez-Rodriguez, Alejandro] IREC, Catalonia Inst Energy Res, Barcelona 08019, Spain. [Metzger, Wyatt K.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Scheer, R (reprint author), Helmholtz Zentrum Berlin, Glienicker Str 100, D-14109 Berlin, Germany. EM scheer@helmholtz-berlin.de NR 67 TC 34 Z9 34 U1 5 U2 46 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1062-7995 J9 PROG PHOTOVOLTAICS JI Prog. Photovoltaics PD SEP PY 2010 VL 18 IS 6 BP 467 EP 480 DI 10.1002/pip.966 PG 14 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 654EA UT WOS:000282150100006 ER PT J AU Goertz, MP Moore, NW AF Goertz, M. P. Moore, N. W. TI Mechanics of soft interfaces studied with displacement-controlled scanning force microscopy SO PROGRESS IN SURFACE SCIENCE LA English DT Review DE Nanoindentation; Scanning probe microscopy; Thin films; Contact mechanics; Surface forces ID SELF-ASSEMBLED MONOLAYERS; LIQUID-LIKE LAYER; ACOUSTIC RADIATION PRESSURE; NANOMETER-SCALE MECHANICS; MOLECULAR-LEVEL FRICTION; SOLID-LIQUID; THIN-FILMS; IN-SITU; MICROELECTROMECHANICAL SYSTEMS; NANOMECHANICAL PROPERTIES AB The development of scanning force microscopes that maintain precise control of the tip position using displacement control (DC-SFM) has allowed significant progress in understanding the relationships between the chemical and mechanical properties of soft interfaces Here developments in DC SFM techniques and their applications are reviewed Examples of material systems that have been investigated are discussed and compared to measurements with other techniques involving nanoprobe geometries to illustrate the achievements and promise in this area Specifically discussed are applications to soft interfaces including SAMs lipid bilayers confined fluids polymer surfaces ligand-receptor bonds and soft metallic films (C) 2010 Elsevier Ltd All rights reserved C1 [Goertz, M. P.; Moore, N. W.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Goertz, M. P.] Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA. RP Goertz, MP (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, US Department of Energy; Sandia National Laboratories [DE-AC04-94AL85000] FX The authors thank J E Houston for his extensive work in developing and applying IFM which has stimulated so much progress in this field This work was supported by the Division of Materials Sciences and Engineering Office of Basic Energy Sciences US Department of Energy and by the Laboratory Directed Research and Development program at Sandia National Laboratories Sandia National Laboratories is a multi-program laboratory operated by Sandia Corporation a Lockheed Martin Company for the Department of Energy s National Nuclear Security Administration under Contract DE-AC04-94AL85000 NR 277 TC 14 Z9 15 U1 5 U2 39 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 SEP-DEC PY 2010 VL 85 IS 9-12 BP 347 EP 397 DI 10.1016/j.progsurf.2010.07.003 PG 51 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 687YB UT WOS:000284813300001 ER PT J AU Ikeda, Y Kamano, H Sato, T AF Ikeda, Yoichi Kamano, Hiroyuki Sato, Toru TI Energy Dependence of (K)over-barN Interactions and Resonance Pole of Strange Dibaryons SO PROGRESS OF THEORETICAL PHYSICS LA English DT Article ID KAON-NUCLEON INTERACTIONS; CHIRAL DYNAMICS; SCATTERING LENGTHS; LAMBDA(1405); STATES AB We study the resonance energy of the strange dibaryons using two models with the energy-independent and energy-dependent potentials for the s-wave (K) over barN interaction, both of which are derived by certain reductions from the leading order term of the effective chiral Lagrangian. These potential models produce rather different off-shell behaviors of the two-body (K) over barN - pi Sigma amplitudes in I = 0 channel, i.e., the model with energy-independent (energy-dependent) potential predicts one (two) resonance pole in the Lambda(1405) region, while they describe the available data equally well. We find that the energy-independent potential model predicts one resonance pole of the strange dibaryons, whereas the energy-dependent potential model predicts two resonance poles: one is the shallow quasi-bound state of the (K) over bar NN, and the other is the resonance of the pi YN with large width. An investigation of the binding energy of the strange dibaryons will make a significant contribution to clarify resonance structure of s-wave (K) over barN - pi Sigma around the Lambda(1405) region. C1 [Ikeda, Yoichi] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. [Ikeda, Yoichi] RIKEN, Inst Phys & Chem Res, Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan. [Kamano, Hiroyuki] Thomas Jefferson Natl Accelerator Facil, EBAC, Newport News, VA 23606 USA. [Sato, Toru] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan. RP Ikeda, Y (reprint author), Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. FU Japan Society for the Promotion of Science; U.S. Department of Energy, Office of Nuclear Physics Division [DE-AC05-06OR23177]; [2004: 20105001]; [20105003]; [20540270] FX This work is supported by the Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research on Innovative Areas (Nos. 2004: 20105001, 20105003), Grant-in-Aid for Scientific Research (C) 20540270, and by the U.S. Department of Energy, Office of Nuclear Physics Division, under Contract No. DE-AC05-06OR23177 under which Jefferson Science Associates operates the Jefferson Lab. NR 19 TC 59 Z9 59 U1 0 U2 2 PU PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE PI KYOTO PA C/O KYOTO UNIV, YUKAWA HALL, KYOTO, 606-8502, JAPAN SN 0033-068X J9 PROG THEOR PHYS JI Prog. Theor. Phys. PD SEP PY 2010 VL 124 IS 3 BP 533 EP 539 PG 7 WC Physics, Multidisciplinary SC Physics GA 662IA UT WOS:000282799700009 ER PT J AU Arbing, MA Kaufmann, M Phan, T Chan, S Cascio, D Eisenberg, D AF Arbing, Mark A. Kaufmann, Markus Phan, Tung Chan, Sum Cascio, Duilio Eisenberg, David TI The crystal structure of the Mycobacterium tuberculosis Rv3019c-Rv3020c ESX complex reveals a domain-swapped heterotetramer SO PROTEIN SCIENCE LA English DT Article DE X-ray crystallography; structural genomics; protein complex; Mycobacterium tuberculosis; bacterial pathogenesis ID T-CELL ANTIGENS; ESAT-6-CFP-10 COMPLEX; PROTEIN STRUCTURES; CALMETTE-GUERIN; BOVIS BCG; ESAT-6; SECRETION; VIRULENCE; FAMILY; CFP-10 AB Mycobacterium tuberculosis encodes five gene clusters (ESX-1 to ESX-5) for Type VII protein secretion systems that are implicated in mycobacterial pathogenicity. Substrates for the secretion apparatus are encoded within the gene clusters and in additional loci that lack the components of the secretion apparatus. The best characterized substrates are the ESX complexes, 1:1 heterodimers of ESAT-6 and CFP-10, the prototypical member that has been shown to be essential for Mycobacterium tuberculosis pathogenesis. We have determined the structure of EsxRS, a homolog of EsxGH of the ESX-3 gene cluster, at 1.91 angstrom resolution. The EsxRS structure is composed of two four-helix bundles resulting from the 3D domain swapping of the C-terminal domain of EsxS, the CFP-10 homolog. The four-helix bundles at the extremities of the complex have a similar architecture to the structure of ESAT-6.CFP-10 (EsxAB) of ESX-1, but in EsxRS a hinge loop linking the alpha-helical domains of EsxS undergoes a loop-to-helix transition that creates the domain swapped EsxRS tetramer. Based on the atomic structure of EsxRS and existing biochemical data on ESX complexes, we propose that higher order ESX oligomers may increase avidity of ESX binding to host receptor molecules or, alternatively, the conformational change that creates the domain swapped structure may be the basis of ESX complex dissociation that would free ESAT-6 to exert a cytotoxic effect. C1 [Eisenberg, David] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA. [Arbing, Mark A.; Kaufmann, Markus; Phan, Tung; Chan, Sum; Cascio, Duilio; Eisenberg, David] Univ Calif Los Angeles, US DOE, Inst Genom & Prote, Los Angeles, CA 90095 USA. [Eisenberg, David] Univ Calif Los Angeles, Dept Biol Chem, David Geffen Sch Med, Los Angeles, CA 90095 USA. RP Eisenberg, D (reprint author), Univ Calif Los Angeles, Dept Chem & Biochem, 611 Charles E Young Dr E, Los Angeles, CA 90095 USA. EM david@mbi.ucla.edu RI Eisenberg, David/E-2447-2011 FU Department of Energy [DE-FC02-02ER63421]; National Institutes of Health [RR-15301]; Department of Energy, Office of Basic Energy Sciences [DE-AC02-06CH11357]; Integrated Structure Function Initiative [2361600206]; Tuberculosis Structural Genomics Consortium [A1068135]; Swiss National Science Foundation FX Grant sponsor: Department of Energy; Grant number: DE-FC02-02ER63421; Grant sponsor: National Institutes of Health Grant number: RR-15301 (NCRR); Grant sponsor: The Department of Energy, Office of Basic Energy Sciences; Grant number: DE-AC02-06CH11357; Grant sponsor: The Integrated Structure Function Initiative; Grant number: 2361600206; Grant sponsor: The Tuberculosis Structural Genomics Consortium; Grant number: A1068135. MK was supported by a postdoctoral fellowship from the Swiss National Science Foundation. NR 60 TC 16 Z9 16 U1 0 U2 0 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0961-8368 J9 PROTEIN SCI JI Protein Sci. PD SEP PY 2010 VL 19 IS 9 BP 1692 EP 1703 DI 10.1002/pro.451 PG 12 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 646SL UT WOS:000281563000009 PM 20629176 ER PT J AU Gibson, F Hoogland, C Martinez-Bartolome, S Medina-Aunon, JA Albar, JP Babnigg, G Wipat, A Hermjakob, H Almeida, JS Stanislaus, R Paton, NW Jones, AR AF Gibson, Frank Hoogland, Christine Martinez-Bartolome, Salvador Alberto Medina-Aunon, J. Pablo Albar, Juan Babnigg, Gyorgy Wipat, Anil Hermjakob, Henning Almeida, Jonas S. Stanislaus, Romesh Paton, Norman W. Jones, Andrew R. TI The Gel Electrophoresis Markup Language (GelML) from the Proteomics Standards Initiative SO PROTEOMICS LA English DT Article DE Bioinformatics; Database; Data standard; Gel electrophoresis; Ontology ID FUNCTIONAL GENOMICS; MINIMUM INFORMATION; MASS-SPECTROMETRY; PUBLIC REPOSITORY; DATA MODEL; GUIDELINES; FUGE; PROTEIN; MIAPE AB The Human Proteome Organisation's Proteomics Standards Initiative has developed the GelML (gel electrophoresis markup language) data exchange format for representing gel electrophoresis experiments performed in proteomics investigations. The format closely follows the reporting guidelines for gel electrophoresis, which are part of the Minimum Information About a Proteomics Experiment (MIAPE) set of modules. GelML supports the capture of metadata (such as experimental protocols) and data (such as gel images) resulting from gel electrophoresis so that laboratories can be compliant with the MIAPE Gel Electrophoresis guidelines, while allowing such data sets to be exchanged or downloaded from public repositories. The format is sufficiently flexible to capture data from a broad range of experimental processes, and complements other PSI formats for MS data and the results of protein and peptide identifications to capture entire gel-based proteome workflows. GelML has resulted from the open standardisation process of PSI consisting of both public consultation and anonymous review of the specifications. C1 [Gibson, Frank; Wipat, Anil] Newcastle Univ, Sch Comp Sci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England. [Hoogland, Christine] Swiss Inst Bioinformat, Proteome Informat Grp, Geneva, Switzerland. [Martinez-Bartolome, Salvador; Alberto Medina-Aunon, J.; Pablo Albar, Juan] CSIC, CNB, Prote Facil, Madrid, Spain. [Babnigg, Gyorgy] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. [Hermjakob, Henning] European Bioinformat Inst, European Mol Biol Lab, Cambridge, England. [Almeida, Jonas S.; Stanislaus, Romesh] Univ Texas MD Anderson Canc Ctr, Dept Bioinformat & Computat Biol, Houston, TX 77030 USA. [Paton, Norman W.] Univ Manchester, Sch Comp Sci, Manchester, Lancs, England. [Jones, Andrew R.] Univ Liverpool, Dept Comparat Mol Med, Sch Vet Sci, Liverpool L69 7ZJ, Merseyside, England. RP Jones, AR (reprint author), Univ Liverpool, Dept Comparat Mol Med, Sch Vet Sci, Liverpool L69 7ZJ, Merseyside, England. EM Andrew.Jones@liverpool.ac.uk OI Martinez de Bartolome, Salvador/0000-0001-7592-5612; Jones, Andrew/0000-0001-6118-9327; Hoogland, Christine/0000-0002-7341-1551; Gibson, Frank/0000-0003-3382-1748; Hermjakob, Henning/0000-0001-8479-0262; Paton, Norman/0000-0003-2008-6617 FU BBSRC [BB/G010781/1]; NIH/CTSA [1UL1RR024148] FX A. R. J. gratefully acknowledges funding from BBSRC [BB/G010781/1]. Work in Manchester by A. R. J. on GelML was funded by the BBSRC (grant to Professor Steve Oliver and N. W. P.), whose support we gratefully acknowledge. J. S. A. and R. S. acknowledge NIH/CTSA award no. 1UL1RR024148. The authors thank the steering committee of the PSI and the individuals who provided anonymous reviews on the GelML specifications. The authors also thank Andreas Bertsch from the University of Tuebingen for creating the GelML validator; he will be sadly missed. NR 29 TC 14 Z9 14 U1 0 U2 2 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1615-9853 J9 PROTEOMICS JI Proteomics PD SEP PY 2010 VL 10 IS 17 BP 3073 EP 3081 DI 10.1002/pmic.201000120 PG 9 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 651DS UT WOS:000281905400003 PM 20677327 ER PT J AU Ware, JH Sanzari, J Avery, S Sayers, C Krigsfeld, G Nuth, M Wan, XS Rusek, A Kennedy, AR AF Ware, J. H. Sanzari, J. Avery, S. Sayers, C. Krigsfeld, G. Nuth, M. Wan, X. S. Rusek, A. Kennedy, A. R. TI Effects of Proton Radiation Dose, Dose Rate and Dose Fractionation on Hematopoietic Cells in Mice SO RADIATION RESEARCH LA English DT Article ID TOTAL-BODY IRRADIATION; DIETARY ANTIOXIDANTS; ANIMAL SURVIVAL; STEM-CELLS; EXPOSURE; SPACE AB The present study evaluated the acute effects of radiation dose, dose rate and fractionation as well as the energy of protons in hematopoietic cells of irradiated mice. The mice were irradiated with a single dose of 51.24 MeV protons at a dose of 2 Gy and a dose rate of 0.05-0.07 Gy/min or 1 GeV protons at doses of 0.1, 0.2, 0.5, 1, 1.5 and 2 Gy delivered in a single dose at dose rates of 0.05 or 0.5 Gy/min or in five daily dose fractions at a dose rate of 0.05 Gy/min. Sham-irradiated animals were used as controls. The results demonstrate a dose-dependent loss of white blood cells (WBCs) and lymphocytes by up to 61% and 72%, respectively, in mice irradiated with protons at doses up to 2 Gy. The results also demonstrate that the dose rate, fractionation pattern and energy of the proton radiation did not have significant effects on WBC and lymphocyte counts in the irradiated animals. These results suggest that the acute effects of proton radiation on WBC and lymphocyte counts are determined mainly by the radiation dose, with very little contribution from the dose rate (over the range of dose rates evaluated), fractionation and energy of the protons. (C) 2010 by Radiation Research Society C1 [Ware, J. H.; Sanzari, J.; Avery, S.; Sayers, C.; Krigsfeld, G.; Nuth, M.; Wan, X. S.; Kennedy, A. R.] Univ Penn, Dept Radiat Oncol, Div Oncol Res, Sch Med, Philadelphia, PA 19104 USA. [Rusek, A.] NASA, Space Radiat Lab, Brookhaven Natl Lab, Upton, NY 11973 USA. RP Ware, JH (reprint author), 195 John Morgan Bldg,3620 Hamilton Walk, Philadelphia, PA 19104 USA. EM jhware@mail.med.upenn.edu FU National Space Biomedical Research Institute (NSBRI) through NASA [NCC 9-58]; NIH [2T32CA09677] FX This work was supported by the National Space Biomedical Research Institute (NSBRI) through NASA NCC 9-58 and NIH Training Grant 2T32CA09677. We would like to thank the staff of the NASA Space Radiation Laboratory and the Brookhaven National Laboratory for help with the animal proton irradiations, with particular thanks to Drs. I-Hung Chiang and Peter Guida. We also acknowledge the expert technical assistance of Corinne Reizel, Brookhaven National Laboratory, who helped us to obtain blood samples from the mice in the studies reported here. NR 18 TC 13 Z9 13 U1 0 U2 3 PU RADIATION RESEARCH SOC PI LAWRENCE PA 810 E TENTH STREET, LAWRENCE, KS 66044 USA SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD SEP PY 2010 VL 174 IS 3 BP 325 EP 330 DI 10.1667/RR1979.1 PG 6 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA 647ZH UT WOS:000281658900007 PM 20726731 ER PT J AU Urgeghe, AM Breshears, DD Martens, SN Beeson, PC AF Urgeghe, Anna M. Breshears, David D. Martens, Scott N. Beeson, Peter C. TI Redistribution of Runoff Among Vegetation Patch Types: On Ecohydrological Optimality of Herbaceous Capture of Run-On SO RANGELAND ECOLOGY & MANAGEMENT LA English DT Article DE ecohydrology; runoff redistribution; run-on; threshold response; vegetation patch types; woodland ID PINYON-JUNIPER WOODLAND; SOUTHERN NEW-MEXICO; SOIL-EROSION; SHRUBLAND HABITATS; CHIHUAHUAN DESERT; SEMIARID WOODLAND; NUTRIENT LOSSES; OVERLAND-FLOW; INFILTRATION; WATER AB A central tenant of ecohydrology in drylands is that runoff redistribution from bare to vegetated patches concentrates the key limiting resource of water, which can then enhance vegetation growth and biomass. Conversely, a reduction in vegetation patches, particularly those associated with herbaceous plants, can lead to a threshold-like response in which bare patches become highly interconnected, triggering a large increase in hillslope runoff and associated erosion. However, generally lacking is an assessment of how maximization of run-on to herbaceous patches relates to minimization of hillslope-scale runoff. To illustrate how runoff redistribution potentially changes in response to conversion of herbaceous patches to bare ones, we used a spatially distributed model, SPLASH (Simulator for Processes at the Landscape Surface Subsurface Hydrology), with an example of a semiarid pinon-juniper woodland hillslope with seven combinations of bare and herbaceous patch cover, culminating in complete loss of herbaceous patches, for a 1-yr design storm. As expected, the amount of hillslope runoff increased curvilinearly with reductions in herbaceous cover as runoff per cell increased from bare patches and run-on per cell increased for herbaceous patches. Notably, the total amount of run-on to all herbaceous patches was greatest when the amount of bare cover was intermediate, highlighting a trade-off between the source area for generating runoff and the sink area for capturing run-on. The specific nature of patch hillslope runoff redistribution responses certainly depends on several site-specific conditions, but the general nature of the response exhibited in our example simulation may be indicative of a general type of response applicable to many rangelands. We suggest that a more robust suite of such relationships could be valuable for managing rangelands by enabling explicit accounting for optimality and trade-offs in biomass per herbaceous patch, total herbaceous cover, and prevention of hillslope-scale connectivity of bare patches that triggers a large increase in runoff and associated erosion. C1 [Breshears, David D.] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA. [Breshears, David D.] Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA. [Urgeghe, Anna M.] Univ Alicante, Dept Ecol, Alicante 03690, Spain. [Beeson, Peter C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Martens, Scott N.] Sierra Sci, Three Rivers, CA 93271 USA. RP Breshears, DD (reprint author), Univ Arizona, Sch Nat Resources & Environm, 1311 E 4th St,BioSci E 325, Tucson, AZ 85737 USA. EM daveb@email.arizona.edu FU Los Alamos Environmental Restoration, National Science Foundation Critical Zone Observatory [NSF EAR-0724958]; Department of Energy National Institute for Climate Change Research (Western Region) [DE-FCO2-O6ER64159]; Arizona Agricultural Experiment Station; Spanish Ministry of Education [AP 2007-03062] FX Research was funded by Los Alamos Environmental Restoration, National Science Foundation Critical Zone Observatory (NSF EAR-0724958), Department of Energy National Institute for Climate Change Research (Western Region; DE-FCO2-O6ER64159), and Arizona Agricultural Experiment Station. A.M.U. was supported by a Formacion de Profesorado Universitario fellowship from the Spanish Ministry of Education (AP 2007-03062) to collaborate at the University of Arizona. NR 64 TC 24 Z9 26 U1 1 U2 28 PU SOC RANGE MANAGEMENT PI LAKEWOOD PA 445 UNION BLVD, STE 230, LAKEWOOD, CO 80228-1259 USA SN 1550-7424 J9 RANGELAND ECOL MANAG JI Rangel. Ecol. Manag. PD SEP PY 2010 VL 63 IS 5 BP 497 EP 504 DI 10.2111/REM-D-09-00185.1 PG 8 WC Ecology; Environmental Sciences SC Environmental Sciences & Ecology GA 652SX UT WOS:000282031300001 ER PT J AU Jamali, K AF Jamali, Kamiar TI Use of risk measures in design and licensing of future reactors SO RELIABILITY ENGINEERING & SYSTEM SAFETY LA English DT Article DE Nuclear reactor safety; Probabilistic risk assessment (PRA); Safety goals; Acceptance criteria; Next generation nuclear plant; Small modular reactors; Frequency-consequence curve AB Use of information and insights from probabilistic risk assessments (PRAs) in nuclear reactor safety applications has been increasing by the nuclear industry and the regulators, both domestically and internationally. This is a desirable trend, as PRAs have demonstrated capability to improve safety and operational flexibility beyond that provided through deterministic approaches alone. But there can be potential pitfalls. The limitations of risk assessment technology can be lost through approaches that rely heavily on quantitative PRA results (referred to as risk measures in this paper), because of the unambiguous but potentially misleading message that can be delivered by risk-based numbers. This is particularly true for future reactors, where PRAs are used during the design and licensing processes. For these applications, it is important to ensure that the actual, de facto, or even perceived use of risk measures in the context of either regulatory or design acceptance criteria is avoided. While the issues discussed here can have a significant influence on design certification or combined license applications for future reactors, they can also have secondary impacts on currently operating reactors. Published by Elsevier Ltd. C1 US DOE, Off Nucl Energy, Washington, DC 20585 USA. RP Jamali, K (reprint author), US DOE, Off Nucl Energy, 1000 Independence Ave, Washington, DC 20585 USA. EM kamiar.jamali@hq.doe.gov NR 28 TC 1 Z9 1 U1 0 U2 3 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0951-8320 J9 RELIAB ENG SYST SAFE JI Reliab. Eng. Syst. Saf. PD SEP PY 2010 VL 95 IS 9 BP 935 EP 943 DI 10.1016/j.ress.2010.04.001 PG 9 WC Engineering, Industrial; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA 617MN UT WOS:000279285000001 ER PT J AU Fthenakis, V Kim, HC AF Fthenakis, Vasilis Kim, Hyung Chul TI Life-cycle uses of water in US electricity generation SO RENEWABLE & SUSTAINABLE ENERGY REVIEWS LA English DT Review DE Life cycle; Water use; Electricity; Renewable energy; Photovoltaics ID WIND FARM; ENERGY; EMISSIONS; BIOENERGY AB Water use by the electric power industry is attracting renewed interest as periods and zones of arid weather are increasingly encountered, and various regional energy-production scenarios are evaluated. However, there is a scarcity of data on upstream water factors and discrepancies of data from different sources. We reviewed previous studies of water use in electricity generation and used full-life cycle accounting to evaluate water demand factors, both withdrawal and consumption, for conventional- and renewable-electrical power plants. Our investigation showed that moving to technologies like photovoltaics and wind offers the best option for conserving our water supply. We also emphasize the importance of employing a transparent, balanced approach in accounting life-cycle water usages. Published by Elsevier Ltd. C1 [Fthenakis, Vasilis] Brookhaven Natl Lab, Dept Energy Sci & Technol, Upton, NY 11973 USA. [Fthenakis, Vasilis; Kim, Hyung Chul] Columbia Univ, Ctr Life Cycle Anal, New York, NY USA. RP Fthenakis, V (reprint author), Brookhaven Natl Lab, Dept Energy Sci & Technol, Upton, NY 11973 USA. EM vmf@bnl.gov OI Kim, Hyung Chul/0000-0002-0992-4547 FU US Department of Energy [DE-AC02-76CH000016] FX This work was supported by the Solar Technologies Program, US Department of Energy, under Contract DE-AC02-76CH000016 with the US-DOE. NR 54 TC 106 Z9 110 U1 3 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 SEP PY 2010 VL 14 IS 7 BP 2039 EP 2048 DI 10.1016/j.rser.2010.03.008 PG 10 WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels SC Science & Technology - Other Topics; Energy & Fuels GA 617CI UT WOS:000279258000027 ER PT J AU Aschenbach, TA Foster, BL Imm, DW AF Aschenbach, Todd A. Foster, Bryan L. Imm, Donald W. TI The Initial Phase of a Longleaf Pine-Wiregrass Savanna Restoration: Species Establishment and Community Responses SO RESTORATION ECOLOGY LA English DT Article DE Aristida beyrichiana; longleaf pine savanna; restoration; Savannah River Site; wiregrass ID COASTAL-PLAIN; SOUTH-CAROLINA; FIRE; VEGETATION; PALUSTRIS; USA; PRODUCTIVITY; ECOSYSTEM; FORESTS; FLORIDA AB The significant loss of the longleaf pine-wiregrass ecosystem in the southeastern United States has serious implications for biodiversity and ecosystem functioning. In response to this loss, we have initiated a long-term and landscape-scale restoration experiment at the 80,125 ha (310 mi2) Department of Energy Savannah River Site (SRS) located near Aiken, South Carolina. Aristida beyrichiana (wiregrass), an important and dominant grass (i.e., a "matrix" species) of the longleaf pine savanna understory, and 31 other herbaceous "non-matrix" species were planted at six locations throughout SRS in 2002 and 2003. Of the 36,056 transplanted seedlings, 75% were still alive in June 2004, while mean 1-2 year survival across all planted species was 48%. Lespedeza hirta (hairy lespedeza) exhibited the greatest overall survival per 3 x 3 m cell at 95%, whereas Schizachyrium spp. (little bluestem) exhibited the greatest mean cover among individual species at 5.9%. Wiregrass survival and cover were significantly reduced when planted with non-matrix species. Aggregate cover of all planted species in restored cells averaged 25.9% in 2006. High rates of survival and growth of the planted species resulted in greater species richness (SR), diversity, and vegetative cover in restored cells. Results suggest that the loss of the longleaf pine-wiregrass ecosystem may be ameliorated through restoration efforts and illustrate the positive impact of restoration plantings on biodiversity and vegetative cover. C1 [Aschenbach, Todd A.; Foster, Bryan L.] Univ Kansas, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USA. [Imm, Donald W.] Savannah River Ecol Lab, Aiken, SC 29802 USA. RP Aschenbach, TA (reprint author), Grand Valley State Univ, Nat Resources Management Program, Dept Biol, Allendale, MI 49401 USA. EM aschenbt@gvsu.edu FU USDA [04-CS-11083601-008]; Department of Energy-Savannah River Operations Office through the U.S. Forest Service-Savannah River [DE-AI09-00SR22188] FX The authors gratefully acknowledge the assistance of Ellen Damschen, Nick Drozda, Laura Krysinski, Todd Kuntz, Brett Miley, Kim Nayda, Tona Segar, Marie Smith, and Erin Questad in data collection and Chris Hobson in fire management of the restoration sites. The authors would like to especially thank Doug Marshall for his assistance in plant propagation. This research was funded by USDA Cooperative Agreement #04-CS-11083601-008 and supported by the Department of Energy-Savannah River Operations Office through the U.S. Forest Service-Savannah River under Interagency Agreement DE-AI09-00SR22188. NR 53 TC 11 Z9 11 U1 7 U2 48 PU WILEY-BLACKWELL PUBLISHING, INC PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1061-2971 J9 RESTOR ECOL JI Restor. Ecol. PD SEP PY 2010 VL 18 IS 5 BP 762 EP 771 DI 10.1111/j.1526-100X.2009.00541.x PG 10 WC Ecology SC Environmental Sciences & Ecology GA 646OS UT WOS:000281552500016 ER PT J AU Reiche, HM Vogel, SC AF Reiche, H. M. Vogel, S. C. TI A versatile automated sample changer for texture measurements on the high pressure-preferred orientation neutron diffractometer SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article DE neutron diffraction; powders; texture ID POWDER DIFFRACTION; RIETVELD REFINEMENT; TOF DIFFRACTOMETER; DEFORMED LIMESTONE; HIPPO; SCATTERING; SYSTEM AB An automated sample changer with an Eulerian cradle for neutron texture measurements is described. This device has been measuring over 2300 texture and almost 400 powder samples at ambient conditions since it became operational in 2002 for use in the high pressure-preferred orientation diffractometer at the LANSCE neutron scattering facility. Operation for almost a decade resulted in sustained enhancements of mechanics, electronics, and software which significantly improved reliability and resiliency. We also describe in this paper our platform independent computer program POD2K which we use to create publication quality pole figure plots for texture samples. (c) 2010 American Institute of Physics. [doi:10.1063/1.3485035] C1 [Reiche, H. M.; Vogel, S. C.] Los Alamos Natl Lab, LANSCE Lujan Ctr, Los Alamos, NM 87544 USA. [Reiche, H. M.] New Mexico State Univ, Las Cruces, NM 88003 USA. RP Reiche, HM (reprint author), Los Alamos Natl Lab, LANSCE Lujan Ctr, POB 1663, Los Alamos, NM 87544 USA. RI Lujan Center, LANL/G-4896-2012; OI Vogel, Sven C./0000-0003-2049-0361 FU U.S. Department of Energy, Office of Basic Energy Sciences; DOE [DE-AC52-06NA25396] FX This work has benefited from Lujan Neutron Scattering Center at LANSCE, which is funded by the U.S. Department of Energy, Office of Basic Energy Sciences. Los Alamos National Laboratory is operated by Los Alamos National Security LLC under DOE Contract No. DE-AC52-06NA25396. We are indebted to John Seal, Tobias Brissier, Nicola Jackle, Philip Bruch, Daniel Salzer, and Adrian Losko for contributions to the development of this device. We are especially grateful for R. B. Von Dreele's original design of the sample changer during the development of the HIPPO project. NR 43 TC 8 Z9 8 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 2010 VL 81 IS 9 AR 093302 DI 10.1063/1.3485035 PG 6 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 657UK UT WOS:000282440900006 PM 20886975 ER PT J AU Park, JY Qi, YB AF Park, Jeong Young Qi, Yabing TI Probing Nanotribological and Electrical Properties of Organic Molecular Films with Atomic Force Microscopy SO SCANNING LA English DT Article DE self-assembled monolayer; friction; charge transport; polymer films; atomic force microscopy ID SELF-ASSEMBLED MONOLAYERS; OCTADECYLTRICHLOROSILANE MONOLAYERS; FRICTIONAL-PROPERTIES; METAL JUNCTIONS; ALKYL; CALIBRATION; DEPENDENCE; EVOLUTION; PRESSURE; AU(111) AB Structural aspects of organic molecular films, such as disordering, packing density, molecular bending or tilts, and phase separation, influence electrical properties as well as friction and adhesion. This indicates a correlation between nanomechanical and charge transport properties of molecular films at the molecular scale. In this review, we highlight the recent studies on correlations between charge transport and nanomechanical properties probed with atomic force microscopy. We discuss the key issues that determine charge transport and nanomechanical properties on several organic molecular films, including self-assembled monolayers formed by saturated hydrocarbon molecules conjugated molecules, and hybrid molecules as well as polymer and polymer blend films. We address the role of molecular deformation and bending in friction and conductance measurements. SCANNING 32: 257-264, 2010. (c) 2010 Wiley Periodicals, Inc. C1 [Park, Jeong Young] Korea Adv Inst Sci & Technol, Grad Sch EEWS, WCU Program, Taejon 305701, South Korea. [Qi, Yabing] Univ Calif Berkeley, Appl Sci & Technol Grad Grp, Berkeley, CA 94720 USA. [Qi, Yabing] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Park, JY (reprint author), 373-1 Guseong Dong, Taejon 305701, South Korea. EM jeongypark@kaist.ac.kr RI Qi, Yabing/A-9243-2010; Park, Jeong Young/A-2999-2008; Qi, Yabing/O-7807-2014 OI Qi, Yabing/0000-0002-4876-8049 FU Ministry of Education, Science and Technology [31-2008-000-10055-0] FX Authors acknowledge the valuable comments from Miquel Salmeron, Frank Ogletree, and Paul Ashby. Y.Q. acknowledges the support from Eugene Haller. J.Y.P. acknowledges the support by WCU (World Class University) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (31-2008-000-10055-0). NR 33 TC 8 Z9 10 U1 0 U2 9 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0161-0457 J9 SCANNING JI Scanning PD SEP-OCT PY 2010 VL 32 IS 5 BP 257 EP 264 DI 10.1002/sca.20182 PG 8 WC Instruments & Instrumentation; Microscopy SC Instruments & Instrumentation; Microscopy GA 680AW UT WOS:000284204500001 PM 21077189 ER PT J AU Pepe, A Rodriguez, MA AF Pepe, Alberto Rodriguez, Marko A. TI Collaboration in sensor network research: an in-depth longitudinal analysis of assortative mixing patterns SO SCIENTOMETRICS LA English DT Article DE Scientific collaboration networks; Sensor network and wireless research; Network evolution; Mixing patterns; Discrete assortativity; Homophily ID CO-AUTHORSHIP; SOCIAL NETWORK; COAUTHORSHIP; SCIENCE; COMMUNITY; PHYSICS; GROWTH AB Many investigations of scientific collaboration are based on statistical analyses of large networks constructed from bibliographic repositories. These investigations often rely on a wealth of bibliographic data, but very little or no other information about the individuals in the network, and thus, fail to illustrate the broader social and academic landscape in which collaboration takes place. In this article, we perform an in-depth longitudinal analysis of a relatively small network of scientific collaboration (N = 291) constructed from the bibliographic record of a research centerin the development and application of wireless and sensor network technologies. We perform a preliminary analysis of selected structural properties of the network, computing its range, configuration and topology. We then support our preliminary statistical analysis with an in-depth temporal investigation of the assortative mixing of selected node characteristics, unveiling the researchers' propensity to collaborate preferentially with others with a similar academic profile. Our qualitative analysis of mixing patterns offers clues as to the nature of the scientific community being modeled in relation to its organizational, disciplinary, institutional, and international arrangements of collaboration. C1 [Pepe, Alberto] Univ Calif Los Angeles, Ctr Embedded Networked Sensing, Los Angeles, CA 90095 USA. [Rodriguez, Marko A.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Pepe, A (reprint author), Univ Calif Los Angeles, Ctr Embedded Networked Sensing, Los Angeles, CA 90095 USA. EM apepe@ucla.edu; marko@lanl.gov NR 33 TC 17 Z9 18 U1 2 U2 22 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0138-9130 EI 1588-2861 J9 SCIENTOMETRICS JI Scientometrics PD SEP PY 2010 VL 84 IS 3 BP 687 EP 701 DI 10.1007/s11192-009-0147-2 PG 15 WC Computer Science, Interdisciplinary Applications; Information Science & Library Science SC Computer Science; Information Science & Library Science GA 630LK UT WOS:000280274400009 ER PT J AU Jiang, C Lin, ZJ Zhao, YS AF Jiang, Chao Lin, Zhijun Zhao, Yusheng TI First principles prediction of vanadium and niobium nitrides with M2N3 stoichiometry SO SCRIPTA MATERIALIA LA English DT Article DE Nitride; First principles calculation; Thermodynamic; Mechanical properties ID HIGH-PRESSURE SYNTHESIS; TANTALUM NITRIDE; STABILITY; SYSTEMS AB The possible crystal structures of transition metal nitrides M2N3 (M = V or Nb) were investigated using first principles calculations We predict that the around state structures of V2N3 and Nb2N3 are trigonal and orthorhombic, respectively, over a wide pressure range Examinations of the thermodynamic stabilities of trigonal V2N3 and orthorhombic Nb2N3 with respect to phase decomposition suggest that they can be prepared under moderate pressure conditions Elastic constant calculations indicated that both nitrides were mechanically stable and are potential candidates for hard materials (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved C1 [Jiang, Chao] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China. [Lin, Zhijun; Zhao, Yusheng] Los Alamos Natl Lab, LANSCE Lujan Neutron Scattering Ctr, Los Alamos, NM 87545 USA. RP Jiang, C (reprint author), Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China. RI Jiang, Chao/A-2546-2011; Lujan Center, LANL/G-4896-2012; Lin, Zhijun/A-5543-2010; Jiang, Chao/D-1957-2017 OI Jiang, Chao/0000-0003-0610-6327 FU Shenghua Professorship Foundation of Central South University FX The work of C.J. was partially supported by the Shenghua Professorship Foundation of Central South University. Z.J. Lin wishes to thank Dr. A Zerr for helpful discussions. All calculations were performed using the parallel computing facilities at Los Alamos National Laboratory. NR 33 TC 11 Z9 12 U1 1 U2 9 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD SEP PY 2010 VL 63 IS 5 BP 532 EP 535 DI 10.1016/j.scriptamat.2010.05.022 PG 4 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 627OE UT WOS:000280048400019 ER PT J AU Ahn, TH Oh, CS Kim, DH Oh, KH Bei, H George, EP Han, HN AF Ahn, T. -H. Oh, C. -S. Kim, D. H. Oh, K. H. Bei, H. George, E. P. Han, H. N. TI Investigation of strain-induced martensitic transformation in metastable austenite using nanoindentation SO SCRIPTA MATERIALIA LA English DT Article DE Martensitic phase transformation; Nanoindentation; Pop-in; Nucleation of phase transformations ID INDUCED PLASTICITY; STEEL; MICROSTRUCTURE; DEFORMATION; MECHANISMS; STRESS; MODEL AB Strain-induced martensitic transformation of metastable austenite was investigated by nanoindentation of individual austenite grains in multi-phase steel. A cross-section prepared through one of these indented regions using focused ion beam milling was examined by transmission electron microscopy. The presence of martensite underneath the indent indicates that the pop-ins observed on the load displacement curve during nanoindentation correspond to the onset of strain-induced martensitic transformation The pop-ins can be understood as resulting from the selection of a favorable martensite variant during nanoindentation (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved C1 [Ahn, T. -H.; Kim, D. H.; Oh, K. H.; Han, H. N.] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea. [Ahn, T. -H.; Kim, D. H.; Oh, K. H.; Han, H. N.] Seoul Natl Univ, RIAM, Ctr Iron & Steel Res, Seoul 151744, South Korea. [Bei, H.; George, E. P.] Korean Inst Mat Sci, Ferrous Alloys Res Grp, Chang Won 641831, South Korea. [George, E. P.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Han, HN (reprint author), Seoul Natl Univ, Dept Mat Sci & Engn, San 56-1,Shinrim Dong, Seoul 151744, South Korea. RI George, Easo/L-5434-2014; Han, Heung Nam/D-6461-2013; Han, Heung Nam/I-7675-2016; OI Han, Heung Nam/0000-0001-5271-9023; Bei, Hongbin/0000-0003-0283-7990 FU Ministry of Education, Science and Technology [2009-0083038]; Ministry of Knowledge Economy, Republic of Korea; Division of Materials Sciences and Engineering, U.S. Department of Energy FX This study was supported by National Research Foundation of Korea grant funded by the Ministry of Education, Science and Technology (2009-0083038). C.S O would like to express thanks for the support, in the form of a grant, of the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea H.B. and E P.G. were supported by the Division of Materials Sciences and Engineering, U.S. Department of Energy. NR 28 TC 47 Z9 47 U1 0 U2 23 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD SEP PY 2010 VL 63 IS 5 BP 540 EP 543 DI 10.1016/j.scriptamat.2010.05.024 PG 4 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 627OE UT WOS:000280048400021 ER PT J AU Mackey, KG Fujita, K Hartse, HE Stead, RJ Steck, LK Gunbina, LV Leyshuk, N Shibaev, SV Koz'min, BM Imaev, VS Gordeev, EI Chebrov, VN Masal'ski, OK Gileva, NA Bormatov, VA Voitenok, AA Levin, YN Fokina, TA AF Mackey, K. G. Fujita, K. Hartse, H. E. Stead, R. J. Steck, L. K. Gunbina, L. V. Leyshuk, N. Shibaev, S. V. Koz'min, B. M. Imaev, V. S. Gordeev, E. I. Chebrov, V. N. Masal'ski, O. K. Gileva, N. A. Bormatov, V. A. Voitenok, A. A. Levin, Y. N. Fokina, T. A. TI Seismicity Map of Eastern Russia, 1960-2010 SO SEISMOLOGICAL RESEARCH LETTERS LA English DT Article ID NORTH-AMERICAN; BAIKAL RIFT; OKHOTSK PLATE; STRESS-FIELD; ASIA; EARTHQUAKE; REGION C1 [Mackey, K. G.; Fujita, K.] Michigan State Univ, Dept Geol Sci, E Lansing, MI 48824 USA. [Hartse, H. E.; Stead, R. J.; Steck, L. K.] Los Alamos Natl Lab, Geophys Grp, Los Alamos, NM USA. [Gunbina, L. V.; Leyshuk, N.] Russian Acad Sci, Magadan Div, Magadan, Russia. [Shibaev, S. V.] Russian Acad Sci, Siberian Branch, Yakut Div, Yakutsk, Russia. [Koz'min, B. M.] Russian Acad Sci, Siberian Branch, Inst Diamond & Precious Met Geol, Yakutsk, Russia. [Imaev, V. S.] Russian Acad Sci, Inst Earth Crust, Siberian Branch, Irkutsk 664003, Russia. [Gordeev, E. I.; Chebrov, V. N.] Russian Acad Sci, Kamchatka Div, Petropavlovsk Kamchatski, Russia. [Masal'ski, O. K.; Gileva, N. A.] Russian Acad Sci, Siberian Branch, Baikal Div, Irkutsk 664003, Russia. [Bormatov, V. A.; Voitenok, A. A.] Russian Acad Sci, Far Eastern Branch, Inst Tecton & Geophys, Khabarovsk, Russia. [Levin, Y. N.; Fokina, T. A.] Russian Acad Sci, Sakhalin Div, Yuzhno Sakhalinsk, Russia. RP Mackey, KG (reprint author), Michigan State Univ, Dept Geol Sci, 206 Nat Sci Bldg, E Lansing, MI 48824 USA. EM mackeyke@msu.edu RI Koroleva, Olga/C-1306-2012 FU U.S. Department of Energy [DE-FC03-02SF22490, DE-FC52-2004NA25540, DE-AC52-09NA29323, W-7405-ENG-36, DE-AC52-06NA25396] FX We thank the staff members of the many institutes and surveys that contributed to the ERSD for this study. Without their hard work over the past fifty years, this data set could not have been assembled. Special thanks to M. L. Nichols, H. Ott, T. H. Faust, R. C. McCaleb, and M. S. McLean at Michigan State University for converting much of the data into digital form, as well as picking additional phase arrivals. We thank Michael Pasyanos of Lawrence Livermore National Laboratory, Alexei Malovichko of the Geophysical Survey of Russia, and Peter Molnar of the University of Colorado at Boulder for helpful comments and discussions. This work has been funded primarily by U.S. Department of Energy contracts DE-FC03-02SF22490, DE-FC52-2004NA25540, and DE-AC52-09NA29323 to Michigan State University, and W-7405-ENG-36 and DE-AC52-06NA25396 to Los Alamos National Laboratory. NR 39 TC 8 Z9 11 U1 1 U2 5 PU SEISMOLOGICAL SOC AMER PI ALBANY PA 400 EVELYN AVE, SUITE 201, ALBANY, CA 94706-1375 USA SN 0895-0695 J9 SEISMOL RES LETT JI Seismol. Res. Lett. PD SEP-OCT PY 2010 VL 81 IS 5 BP 761 EP 768 DI 10.1785/gssrl.81.5.761 PG 8 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 644ID UT WOS:000281367500010 ER PT J AU Anderson, KK Tardiff, MF Chilton, LK AF Anderson, Kevin K. Tardiff, Mark F. Chilton, Lawrence K. TI Predicting the Detectability of Thin Gaseous Plumes in Hyperspectral Images Using Basis Vectors SO SENSORS LA English DT Article DE plume; detection; LWIR; basis vectors; NECL ID CLUTTER AB This paper describes a new method for predicting the detectability of thin gaseous plumes in hyperspectral images. The novelty of this method is the use of basis vectors for each of the spectral channels of a collection instrument to calculate noise-equivalent concentration-pathlengths instead of matching scene pixels to absorbance spectra of gases in a library. This method provides insight into regions of the spectrum where gas detection will be relatively easier or harder, as influenced by ground emissivity, temperature contrast, and the atmosphere. Our results show that data collection planning could be influenced by information about when potential plumes are likely to be over background segments that are most conducive to detection. C1 [Anderson, Kevin K.; Tardiff, Mark F.; Chilton, Lawrence K.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Chilton, LK (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM kevin.anderson@pnl.gov; mark.tardiff@pnl.gov; lawrence.chilton@pnl.gov OI Anderson, Kevin/0000-0001-5613-5893 FU United States National Nuclear Security Administration's Office of Nonproliferation and Verification Research and Development; US Department of Energy [DAC05-76RL01830] FX The authors thank David Messinger of the Digital Imaging and Remote Sensing Laboratory at Rochester Institute of Technology for providing the AHI image and OLSTER analysis and permitting us to use it in this paper. This work was supported by the United States National Nuclear Security Administration's Office of Nonproliferation and Verification Research and Development and conducted at the US Department of Energy's Pacific Northwest National Laboratory. The laboratory is operated by Battelle Memorial Institute for the US Department of Energy under Contract DAC05-76RL01830. NR 9 TC 0 Z9 0 U1 0 U2 1 PU MDPI AG PI BASEL PA KANDERERSTRASSE 25, CH-4057 BASEL, SWITZERLAND SN 1424-8220 J9 SENSORS-BASEL JI Sensors PD SEP PY 2010 VL 10 IS 9 BP 8652 EP 8662 DI 10.3390/s100908652 PG 11 WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation SC Chemistry; Electrochemistry; Instruments & Instrumentation GA 655BY UT WOS:000282218800046 PM 22163677 ER PT J AU Alsem, DH van der Hulst, R Stach, EA Dugger, MT De Hosson, JTM Ritchie, RO AF Alsem, D. H. van der Hulst, R. Stach, E. A. Dugger, M. T. De Hosson, J. Th. M. Ritchie, R. O. TI Wear mechanisms and friction parameters for sliding wear of micron-scale polysilicon sidewalls SO SENSORS AND ACTUATORS A-PHYSICAL LA English DT Article DE MEMS; Polycrystalline silicon; Wear; Friction; Tribology; Wear mechanisms ID SILICON STRUCTURAL FILMS; SELF-ASSEMBLED MONOLAYER; SINGLE-CRYSTAL SILICON; HIGH-CYCLE FATIGUE; POLYCRYSTALLINE SILICON; MICROELECTROMECHANICAL SYSTEMS; IN-SITU; TRIBOLOGICAL CHARACTERIZATION; ELECTRON-MICROSCOPY; FORCE MICROSCOPY AB As tribological properties are critical factors in the reliability of silicon-based microelectromechanical systems, it is important to understand what governs wear and friction. Average dynamic friction, wear volumes and morphology have been studied for polysilicon devices fabricated using the Sandia SUMMiT V(TM) process and actuated in room-temperature air at mu N loads. A total of seven devices was tested for total life. Three of the total-life experiments showed a global peak in the friction coefficient at three times the initial value with failure after 10(5) cycles. Four other total-life experiments ran similarly up to 10(5) cycles; however, following this global peak in the friction coefficient these devices continued to operate and achieved a lower steady-state friction regime with no failure for millions of cycles. Coincident with the friction coefficient increase, the nano-scale wear coefficient and surface roughness increased sharply in the first 10(5) cycles and then decayed over several million cycles. These results are considered in terms of a mechanistic understanding of wear and friction: after an initial short adhesive wear regime with early failures attributed to local spikes in friction caused by differences in the local nano-scale surface morphology, three-body abrasive wear becomes the governing mechanism, allowing the devices to achieve a steady-state friction regime. Changing the relative humidity, sliding speed and load in the steady-state regime, in which devices spend the majority of their operating life, is found to influence the friction coefficient, but re-oxidation of worn polysilicon surfaces was only found to have an effect on the friction coefficient after periods of inactivity. (c) 2010 Elsevier B.V. All rights reserved. C1 [Ritchie, R. O.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. [Alsem, D. H.; Ritchie, R. O.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94709 USA. [Alsem, D. H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94709 USA. [van der Hulst, R.; De Hosson, J. Th. M.] Univ Groningen, Dept Appl Phys, NL-9747 AG Groningen, Netherlands. [Stach, E. A.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. [Dugger, M. T.] Sandia Natl Labs, Ctr Mat Sci & Engn, Albuquerque, NM 87185 USA. RP Ritchie, RO (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, 216 Hearst Mem Min Bldg, Berkeley, CA 94720 USA. EM RORitchie@lbl.gov RI Stach, Eric/D-8545-2011; Ritchie, Robert/A-8066-2008; De Hosson, Jeff/C-2169-2013; OI Stach, Eric/0000-0002-3366-2153; Ritchie, Robert/0000-0002-0501-6998; De Hosson, Jeff/0000-0002-2587-3233 FU Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy [DE-ACO2-05CH11231]; U.S. Department of Energy [DE-AC02-05CH11231]; Sandia National Laboratories; U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX This work was funded by the Director, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy under Contract No. DE-ACO2-05CH11231 at the Lawrence Berkeley National Laboratory (LBNL). Studies were additionally performed at the National Center for Electron Microscopy and the Molecular Foundry (special thanks to Drs. Ashby and Ogletree), both operated at LBNL with the support of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Support from Sandia National Laboratories is also gratefully acknowledged; Sandia is a multi-program 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 78 TC 8 Z9 8 U1 0 U2 15 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0924-4247 J9 SENSOR ACTUAT A-PHYS JI Sens. Actuator A-Phys. PD SEP PY 2010 VL 163 IS 1 BP 373 EP 382 DI 10.1016/j.sna.2010.06.025 PG 10 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA 673NU UT WOS:000283671000050 ER PT J AU Lynch, C Brei, D Chaplya, P Ounaies, Z Kamlah, M Seelecke, S Lucato, SDE Weiland, L AF Lynch, Christopher Brei, Diann Chaplya, Pavel Ounaies, Zoubeida Kamlah, Marc Seelecke, Stefan dos Santos e Lucato, Sergio Weiland, Lisa TI Adaptive and active materials: Selected papers from the ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS 09) (Oxnard, CA, USA, 21-23 September 2009) SO SMART MATERIALS & STRUCTURES LA English DT Editorial Material C1 [Lynch, Christopher] Univ Calif Los Angeles, Los Angeles, CA 90024 USA. [Brei, Diann] Univ Michigan, Ann Arbor, MI 48109 USA. [Chaplya, Pavel] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Ounaies, Zoubeida] Texas A&M Univ, College Stn, TX USA. [Kamlah, Marc] Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany. [Seelecke, Stefan] N Carolina State Univ, Raleigh, NC 27695 USA. [dos Santos e Lucato, Sergio] Teledyne Sci, Thousand Oaks, CA USA. [Weiland, Lisa] Univ Pittsburgh, Pittsburgh, PA 15260 USA. RP Lynch, C (reprint author), Univ Calif Los Angeles, Los Angeles, CA 90024 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0964-1726 J9 SMART MATER STRUCT JI Smart Mater. Struct. PD SEP PY 2010 VL 19 IS 9 SI SI AR 090201 DI 10.1088/0964-1726/19/9/090201 PG 1 WC Instruments & Instrumentation; Materials Science, Multidisciplinary SC Instruments & Instrumentation; Materials Science GA 635BY UT WOS:000280631800001 ER PT J AU Yang, NF Eash, NS Lee, J Martin, MZ Zhang, YS Walker, FR Yang, JE AF Yang, Ningfang Eash, Neal S. Lee, Jaehoon Martin, Madhavi Z. Zhang, Yong-Seon Walker, Forbes R. Yang, Jae E. TI Multivariate Analysis of Laser-Induced Breakdown Spectroscopy Spectra of Soil Samples SO SOIL SCIENCE LA English DT Article DE Multivariate analysis; LIBS; PLS; quantitative soil chemical analysis ID PLASMA SPECTROSCOPY AB Laser-induced breakdown spectroscopy (LIBS) is a rapid quantitative analytical technique that can be used to determine the elemental composition of numerous sample matrices, and it has been successfully applied in many types of samples. However, for chemically and physically complex soil samples, its quantitative analytical ability is controversial. Multivariate analytical techniques have great potential for analyzing the complex LIBS spectra. To demonstrate the feasibility of LIBS as an alternative technique to quantitatively analyze soil samples, the univariate and the partial least square (PLS) techniques are used to analyze the LIBS spectra of 12 soil samples and to build calibration models predicting Cu and Zn concentrations. The results show that PLS can significantly improve the analytical results compared with the univariate technique. The normalized root mean square error (NRMSE) and r(2) of the univariate models are 16.60% and 0.71 in calibration and 18.80% and 0.62 in prediction for Cu and 18.97% and 0.62 in calibration and 22.81% and 0.45 in prediction for Zn. For the PLS models using the spectral range 300 to 350 nm, the NRMSE and r(2) are 1.94% and 0.99 for both Cu and Zn in calibration and 7.90% and 0.94 for Cu and 8.14% and 0.94 for Zn in prediction, respectively. Compared with the univariate technique, PLS improves the NRMSE 87.53% and 87.78% in calibration and 44.47% and 53.44% in prediction for Cu and Zn, respectively. The results indicate that PLS can improve the quantitative analytical ability of LIBS for soil sample analysis. C1 [Yang, Ningfang; Eash, Neal S.; Lee, Jaehoon; Walker, Forbes R.] Univ Tennessee, Knoxville, TN 37996 USA. [Martin, Madhavi Z.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. [Zhang, Yong-Seon] Natl Acad Agr Sci, Soil & Fertilizer Management Div, Suwon, South Korea. [Yang, Jae E.] Kangwon Natl Univ, Dept Environm Biol, Chunchon, South Korea. RP Eash, NS (reprint author), Univ Tennessee, 2506 EJ Chapman Dr, Knoxville, TN 37996 USA. EM eash@utk.edu RI Martin, Madhavi/A-5268-2011; LEE, JAEHOON/D-9758-2014; OI Martin, Madhavi/0000-0002-6677-2180; Eash, Neal/0000-0001-9141-4302 FU Rural Development Administration of the Republic of Korea; Oak Ridge National Laboratory; U.S. Department of Energy [DER-AC05-00OR22725] FX This work was funded by the Rural Development Administration of the Republic of Korea. Dr. Martin was sponsored by the laboratory-directed research and development program of Oak Ridge National Laboratory. The Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Department of Energy under Contract No. DER-AC05-00OR22725. NR 28 TC 9 Z9 10 U1 2 U2 21 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0038-075X J9 SOIL SCI JI Soil Sci. PD SEP PY 2010 VL 175 IS 9 BP 447 EP 452 DI 10.1097/SS.0b013e3181f516ea PG 6 WC Soil Science SC Agriculture GA 649SG UT WOS:000281793000005 ER PT J AU Kluitenberg, GJ Kamai, T Vrugt, JA Hopmans, JW AF Kluitenberg, Gerard J. Kamai, Tamir Vrugt, Jasper A. Hopmans, Jan W. TI Effect of Probe Deflection on Dual-Probe Heat-Pulse Thermal Conductivity Measurements SO SOIL SCIENCE SOCIETY OF AMERICA JOURNAL LA English DT Article ID SOIL-WATER CONTENT; CAPACITY AB The dual-probe heat-pulse (DPHP) method is useful for measuring soil thermal properties; however, the probes of a DPHP sensor can deflect when inserted into the soil. Theoretical analysis has shown that measurements of thermal conductivity (lambda) should be unaffected by deflection-induced changes in probe spacing. To verify this result, the conductivities of water, dry sand, and saturated sand were measured using DPHP sensors with probes subject to inward deflection, no deflection, and outward deflection. No error in lambda was detected when probes were deflected inward by an amount that caused a 14% reduction in probe spacing. Outward deflection (15% increase in spacing) caused error in lambda estimates, but the errors were small (<= 0.04 W m(-1) K(-1)) and likely to be of little consequence in most applications. We conclude that estimates of lambda obtained with the DPHP method are largely unaffected by changes in probe spacing caused by deflection. C1 [Kluitenberg, Gerard J.] Kansas State Univ, Dept Agron, Manhattan, KS 66506 USA. [Kamai, Tamir; Hopmans, Jan W.] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA. [Vrugt, Jasper A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Vrugt, Jasper A.] Univ Calif Irvine, Dept Civil & Environm Engn, Irvine, CA 92697 USA. RP Kluitenberg, GJ (reprint author), Kansas State Univ, Dept Agron, Manhattan, KS 66506 USA. EM gjk@ksu.edu RI Vrugt, Jasper/C-3660-2008; Kamai, Tamir/G-6591-2015 FU National Science Foundation [ECS-0410055] FX This material is based on work supported by the National Science Foundation under Grant no. ECS-0410055. NR 9 TC 11 Z9 12 U1 1 U2 5 PU SOIL SCI SOC AMER PI MADISON PA 677 SOUTH SEGOE ROAD, MADISON, WI 53711 USA SN 0361-5995 J9 SOIL SCI SOC AM J JI Soil Sci. Soc. Am. J. PD SEP-OCT PY 2010 VL 74 IS 5 BP 1537 EP 1540 DI 10.2136/sssaj2010.0016N PG 4 WC Soil Science SC Agriculture GA 650BS UT WOS:000281823100011 ER PT J AU Levinson, R Akbari, H Berdahl, P AF Levinson, Ronnen Akbari, Hashem Berdahl, Paul TI Measuring solar reflectance-Part I: Defining a metric that accurately predicts solar heat gain SO SOLAR ENERGY LA English DT Article DE Solar reflectance; Solar heat gain; Pyranometer; Solar spectrophotometer; Solar Spectrum Reflectometer; Spectrally selective "cool colored" surface ID SPECTRAL OPTICAL-PROPERTIES; ROOFING MATERIALS; BIDIRECTIONAL REFLECTANCE; SCATTERING; PIGMENTS; SURFACES AB Solar reflectance can vary with the spectral and angular distributions of incident sunlight, which in turn depend on surface orientation, solar position and atmospheric conditions. A widely used solar reflectance metric based on the ASTM Standard E891 beam-normal solar spectral irradiance underestimates the solar heat gain of a spectrally selective "cool colored" surface because this irradiance contains a greater fraction of near-infrared light than typically found in ordinary (unconcentrated) global sunlight. At mainland US latitudes, this metric R(E891BN) can underestimate the annual peak solar heat gain of a typical roof or pavement (slope <= 5:12 [23 degrees]) by as much as 89W m(-2), and underestimate its peak surface temperature by up to 5 K. Using RE891BN to characterize roofs in a building energy simulation can exaggerate the economic value N of annual cool roof net energy savings by as much as 23%. We define clear sky air mass one global horizontal ("AMIGH") solar reflectance R(g,0), a simple and easily measured property that more accurately predicts solar heat gain. R(g,0) predicts the annual peak solar heat gain of a roof or pavement to within 2 W m(-2), and overestimates N by no more than 3%. R(g,0) is well suited to rating the solar reflectances of roofs, pavements and walls. We show in Part II that R(g,0) can be easily and accurately measured with a pyranometer, a solar spectrophotometer or version 6 of the Solar Spectrum Reflectometer. (C) 2010 Elsevier Ltd. All rights reserved. C1 [Levinson, Ronnen; Akbari, Hashem; Berdahl, Paul] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Heat Isl Grp, Berkeley, CA 94720 USA. RP Levinson, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Heat Isl Grp, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM RML27@cornell.edu FU California Energy Commission (CEC); Assistant Secretary for Renewable Energy [DE-AC02-05CH11231] FX This work was supported by the California Energy Commission (CEC) through its Public Interest Energy Research Program (PIER) and by the Assistant Secretary for Renewable Energy under Contract No. DE-AC02-05CH11231. The authors wish to thank PIER manager Chris Scruton and former CEC Commissioner Arthur Rosenfeld for their support and advice. We thank Chris Gueymard of Solar Consulting Services (Colebrook, NH) and Daryl Myers of the National Renewable Energy Laboratory (Golden, CO) for guidance in the computation of solar spectral irradiance. We also thank Charlie Moore of Devices & Services (Dallas, TX) for characterization of the Solar Spectrum Reflectometer. NR 39 TC 52 Z9 54 U1 1 U2 21 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 SEP PY 2010 VL 84 IS 9 BP 1717 EP 1744 DI 10.1016/j.solener.2010.04.018 PG 28 WC Energy & Fuels SC Energy & Fuels GA 651NN UT WOS:000281934500018 ER PT J AU Levinson, R Akbari, H Berdahl, P AF Levinson, Ronnen Akbari, Hashem Berdahl, Paul TI Measuring solar reflectance-Part II: Review of practical methods SO SOLAR ENERGY LA English DT Article DE Solar reflectance; Solar heat gain; Pyranometer; Solar spectrophotometer; Solar Spectrum Reflectometer; Spectrally selective "cool colored" surface AB A companion article explored how solar reflectance varies with surface orientation and solar position, and found that clear sky air mass 1 global horizontal (AM1GH) solar reflectance is a preferred quantity for estimating solar heat gain. In this study we show that AM1GH solar reflectance R(g,0) can be accurately measured with a pyranometer, a solar spectrophotometer, or an updated edition of the Solar Spectrum Reflectometer (version 6). Of primary concern are errors that result from variations in the spectral and angular distributions of incident sunlight. Neglecting shadow, background and instrument errors, the conventional pyranometer technique can measure R(g,0) to within 0.01 for surface slopes up to 5:12 [23 degrees], and to within 0.02 for surface slopes up to 12:12 [45 degrees]. An alternative pyranometer method minimizes shadow errors and can be used to measure R(g,0) of a surface as small as 1 m in diameter. The accuracy with which it can measure R(g,0) is otherwise comparable to that of the conventional pyranometer technique. A solar spectrophotometer can be used to determine R(g,0)*, a solar reflectance computed by averaging solar spectral reflectance weighted with AM1GH solar spectral irradiance. Neglecting instrument errors, R(g,0)* matches R(g,0) to within 0.006. The air mass 1.5 solar reflectance measured with version 5 of the Solar Spectrum Reflectometer can differ from R(g,0)* by as much as 0.08, but the AM1GH output of version 6 of this instrument matches R(g,0)* to within about 0.01. g. (C) 2010 Elsevier Ltd. All rights reserved. C1 [Levinson, Ronnen; Akbari, Hashem; Berdahl, Paul] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Heat Isl Grp, Berkeley, CA 94720 USA. RP Levinson, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Heat Isl Grp, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM RML27@cornell.edu FU California Energy Commission (CEC); Assistant Secretary for Renewable Energy [DE-AC02-05CH11231] FX This work was supported by the California Energy Commission (CEC) through its Public Interest Energy Research Program (PIER) and by the Assistant Secretary for Renewable Energy under Contract No. DE-AC02-05CH11231. The authors wish to thank PIER manager Chris Scruton and former CEC Commissioner Arthur Rosenfeld for their support and advice. We thank Charlie Moore of Devices & Services (Dallas, TX) for characterization of the Solar Spectrum Reflectometer, and Kevin Stone for assistance in the development of method E1918A. We also thank James Dunn of the Ferro Corporation and Michelle Vondran (formerly of BASF Industrial Coatings) for supplying test materials. NR 23 TC 31 Z9 33 U1 0 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 SEP PY 2010 VL 84 IS 9 BP 1745 EP 1759 DI 10.1016/j.solener.2010.04.017 PG 15 WC Energy & Fuels SC Energy & Fuels GA 651NN UT WOS:000281934500019 ER PT J AU Papaioannou, A Malandraki, O Belov, A Skoug, R Mavromichalaki, H Eroshenko, E Abunin, A Lepri, S AF Papaioannou, A. Malandraki, O. Belov, A. Skoug, R. Mavromichalaki, H. Eroshenko, E. Abunin, A. Lepri, S. TI On the Analysis of the Complex Forbush Decreases of January 2005 SO SOLAR PHYSICS LA English DT Article DE Cosmic rays; Coronal mass ejections; Forbush decreases; Interplanetary coronal mass ejections; Magnetic clouds ID CORONAL MASS EJECTIONS; SOLAR-WIND; MAGNETIC CLOUDS; EVENTS; PASSAGE; SPACE AB In this work an analysis of a series of complex cosmic ray events that occurred between 17 January 2005 and 23 January 2005 using solar, interplanetary and ground based cosmic ray data is being performed. The investigated period was characterized both by significant galactic cosmic ray (GCR) and solar cosmic ray (SCR) variations with highlighted cases such as the noticeable series of Forbush effects (FEs) from 17 January 2005 to 20 January 2005, the Forbush decrease (FD) on 21 January 2005 and the ground level enhancement (GLE) of the cosmic ray counter measurements on 20 January 2005. The analysis is focusing on the aforementioned FE cases, with special attention drawn on the 21 January 2005, FD event, which demonstrated several exceptional features testifying its uniqueness. Data from the ACE spacecraft, together with GOES X-ray recordings and LASCO CME coronagraph images were used in conjunction to the ground based recordings of the Worldwide Neutron Monitor Network, the interplanetary data of OMNI database and the geomagnetic activity manifestations denoted by K (p) and D (st) indices. More than that, cosmic ray characteristics as density, anisotropy and density gradients were also calculated. The results illustrate the state of the interplanetary space that cosmic rays crossed and their corresponding modulation with respect to the multiple extreme solar events of this period. In addition, the western location of the 21 January 2005 solar source indicates a new cosmic ray feature, which connects the position of the solar source to the cosmic ray anisotropy variations. In the future, this feature could serve as an indicator of the solar source and can prove to be a valuable asset, especially when satellite data are unavailable. C1 [Papaioannou, A.; Mavromichalaki, H.] Univ Athens, Dept Phys, Nucl & Particle Phys Sect, Athens 15771, Greece. [Malandraki, O.] Natl Observ Athens, Inst Astron & Astrophys, Athens, Greece. [Belov, A.; Eroshenko, E.; Abunin, A.] Russian Acad Sci, Inst Terr Magnetism Ionosphere & Radio Wave Propa, After Pushkov, Moscow Region, Russia. [Skoug, R.] Los Alamos Natl Lab, Space Sci & Applicat Grp ISR 1, Los Alamos, NM USA. [Lepri, S.] Univ Michigan, Ann Arbor, MI 48109 USA. RP Papaioannou, A (reprint author), Univ Athens, Dept Phys, Nucl & Particle Phys Sect, Athens 15771, Greece. EM atpapaio@phys.uoa.gr; omaland@astro.noa.gr; abelov@izmiran.ru; rskoug@lanl.gov; emavromi@phys.uoa.gr; erosh@izmiran.ru; slepri@umich.edu RI Lepri, Susan/I-8611-2012; Papaioannou, Athanasios/K-7065-2013; Malandraki, Olga/F-3224-2010 FU Special Research Account of the University of Athens; U.S. Department of Energy; NASA [44A-1085637] FX The authors of this paper would like to thank all colleagues for making their data available via Internet. H. Mavromichalaki and A. Papaioannou would like to acknowledge the support of the Special Research Account of the University of Athens to the Athens Neutron Monitor Station. The CME catalogue used for the CME identification in this work is generated and maintained by NASA and the Catholic University of America in cooperation with the Naval Research Laboratory. SOHO is a project of international cooperation between ESA and NASA. Work at Los Alamos was performed under the auspices of the U.S. Department of Energy, with financial support from the NASA ACE program. Sue Lepri would like to acknowledge NASA subcontract 44A-1085637 for the work. The authors would like to thank the anonymous referee for the useful comments that improved this paper. NR 41 TC 14 Z9 14 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0038-0938 J9 SOL PHYS JI Sol. Phys. PD SEP PY 2010 VL 266 IS 1 BP 181 EP 193 DI 10.1007/s11207-010-9601-9 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 648IL UT WOS:000281685900014 ER PT J AU Pantelides, ST Tsetseris, L Beck, MJ Rashkeev, SN Hadjisavvas, G Batyrev, IG Tuttle, BR Marinopoulos, AG Zhou, XJ Fleetwood, DM Schrimpf, RD AF Pantelides, Sokrates T. Tsetseris, L. Beck, M. J. Rashkeev, S. N. Hadjisavvas, G. Batyrev, I. G. Tuttle, B. R. Marinopoulos, A. G. Zhou, X. J. Fleetwood, D. M. Schrimpf, R. D. TI Performance, reliability, radiation effects, and aging issues in microelectronics - From atomic-scale physics to engineering-level modeling SO SOLID-STATE ELECTRONICS LA English DT Article; Proceedings Paper CT 39th ESSDERC conference CY SEP 15-19, 2009 CL Athens, GREECE DE MOSFET; Reliability; Hydrogen; NBTI; Radiation effects; ELDRS; Mobilities; Aging; Displacement damage ID EVENT GATE-RUPTURE; BIAS TEMPERATURE INSTABILITY; INTERFACE-TRAP FORMATION; SI N-MOSFETS; NEGATIVE BIAS; MOS DEVICES; MOBILITY ENHANCEMENT; SI-SIO2 INTERFACES; ELECTRON-MOBILITY; BIPOLAR-DEVICES AB The development of engineering-level models requires adoption of physical mechanisms that underlie observed phenomena. This paper reviews several cases where parameter-free, atomic-scale, quantum mechanical calculations led to the identification of specific physical mechanisms for phenomena relating to performance, reliability, radiation effects, and aging issues in microelectronics. More specifically, we review recent calculations of electron mobilities that are based on atomic-scale models of the Si-SiO2 interface and elucidate the origin of strain-induced mobility enhancement. We then review extensive work that highlights the role of hydrogen as the primary agent of reliability phenomena such as negative bias temperature instability (NBTI) and radiation effects, such as enhanced low-dose radiation sensitivity (ELDRS) and dopant deactivation. Finally, we review atomic-scale simulations of recoils induced by energetic ions in Si and SiO2. The latter provide a natural explanation for single-event gate rupture (SEGR) in terms of defects with energy levels in the SiO2 band gap. (C) 2010 Published by Elsevier Ltd. C1 [Pantelides, Sokrates T.; Tsetseris, L.; Beck, M. J.; Rashkeev, S. N.; Hadjisavvas, G.; Batyrev, I. G.; Tuttle, B. R.; Marinopoulos, A. G.; Fleetwood, D. M.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. [Pantelides, Sokrates T.; Zhou, X. J.; Fleetwood, D. M.; Schrimpf, R. D.] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA. [Pantelides, Sokrates T.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Tsetseris, L.] Aristotle Univ Thessaloniki, Dept Phys, Thessaloniki 54124, Greece. [Rashkeev, S. N.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Tuttle, B. R.] Penn State Behrend Coll, Dept Phys, Erie, PA 16563 USA. RP Pantelides, ST (reprint author), Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. EM pantelides@Vanderbilt.Edu RI Marinopoulos, Apostolos/L-5044-2013; Schrimpf, Ronald/L-5549-2013 OI Marinopoulos, Apostolos/0000-0002-1951-4832; Schrimpf, Ronald/0000-0001-7419-2701 FU National Science Foundation; Air Force Office of Scientific Research; McMinn Endowment at Vanderbilt University FX This work was supported in part by the National Science Foundation, the Air Force Office of Scientific Research and the McMinn Endowment at Vanderbilt University. NR 65 TC 11 Z9 11 U1 1 U2 25 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1101 EI 1879-2405 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD SEP PY 2010 VL 54 IS 9 BP 841 EP 848 DI 10.1016/j.sse.2010.04.041 PG 8 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA 631BU UT WOS:000280322300005 ER PT J AU Kowalsky, MB Nakagawa, S Moridis, GJ AF Kowalsky, Michael B. Nakagawa, Seiji Moridis, George J. TI Feasibility of Monitoring Gas-Hydrate Production With Time-Lapse Vertical Seismic Profiling SO SPE JOURNAL LA English DT Article ID 2L-38 RESEARCH WELL; BEARING SEDIMENTS; MARINE-SEDIMENTS; MACKENZIE DELTA; METHANE HYDRATE; WAVE; VELOCITIES; ATTENUATION; CANADA AB Many studies involving the application of geophysical methods in the field of gas hydrates have focused on determining rock-physics relationships for hydrate-bearing sediments, with the goal being to delineate the boundaries of gas-hydrate accumulations and to estimate the quantities of gas hydrate that such accumulations contain using remote-sensing techniques. However, the potential for using time-lapse geophysical methods to monitor the evolution of hydrate accumulations during production and, thus, to manage production has not been investigated. In this work, we begin to examine the feasibility of using time-lapse seismic methods specifically, the vertical-seismic-profiling (VSP) method for monitoring changes in hydrate accumulations that are predicted to occur during production of natural gas. A feasibility study of this nature is made possible through the coupled simulation of large-scale production in hydrate accumulations and time-lapse geophysical (seismic) surveys. We consider a hydrate accumulation in the Gulf of Mexico that may represent a promising target for production. Although the current study focuses on one seismic method (VSP), this approach can be extended easily to other geophysical methods, including other seismic methods (e.g., surface seismic or crosshole measurements) and electromagnetic surveys. In addition to examining the sensitivity of seismic attributes and parameters to the changing conditions in hydrate accumulations, our long-term goals in this work are to determine optimal sampling strategies (e.g., source frequency, time interval for data acquisition) and measurement configurations (e.g., source and receiver spacing for VSP), while taking into account uncertainties in rock-physics relationships. The numerical-modeling strategy demonstrated in this study may be used in the future to help design cost-effective geophysical surveys to track the evolution of hydrate properties. Here, we describe the modeling procedure and present some preliminary results. C1 [Kowalsky, Michael B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Hydrologeol Dept, Div Earth Sci, Berkeley, CA 94720 USA. [Nakagawa, Seiji] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Dept Geophys, Berkeley, CA 94720 USA. [Moridis, George J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Deputy Program, Berkeley, CA 94720 USA. RP Kowalsky, MB (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Hydrologeol Dept, Div Earth Sci, Berkeley, CA 94720 USA. RI Nakagawa, Seiji/F-9080-2015 OI Nakagawa, Seiji/0000-0002-9347-0903 FU Office of Natural Gas and Petroleum Technology Laboratory under the US Department of Energy [DE-AC02-05CH11231]; Earth Sciences Division of the Lawrence Berkeley National Laboratory FX This work was supported by the Assistant Secretary for Fossil Energy, Office of Natural Gas and Petroleum Technology Laboratory, under the US Department of Energy, Contract No. DE-AC02-05CH11231. The authors are indebted to Matt Reagan for his careful review. The first author would like to acknowledge the support of a professional development grant from the Earth Sciences Division of the Lawrence Berkeley National Laboratory. NR 38 TC 3 Z9 3 U1 2 U2 12 PU SOC PETROLEUM ENG PI RICHARDSON PA 222 PALISADES CREEK DR,, RICHARDSON, TX 75080 USA SN 1086-055X J9 SPE J JI SPE J. PD SEP PY 2010 VL 15 IS 3 BP 634 EP 645 PG 12 WC Engineering, Petroleum SC Engineering GA 653EI UT WOS:000282070500006 ER PT J AU Sparks, CM Fittschen, UEA Havrilla, GJ AF Sparks, Chris M. Fittschen, Ursula E. A. Havrilla, George J. TI Picoliter solution deposition for total reflection X-ray fluorescence analysis of semiconductor samples SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article DE Total reflection X-ray fluorescence TXRF; Picoliter deposition; Vapor phase decomposition VPD ID SILICON-WAFER SURFACES; SYNCHROTRON-RADIATION; SPECTROMETRY; TXRF; THICKNESS; RESIDUES; DROPLETS; FLOW AB A deposition system capable of delivering picoliter quantities of solution in programmable arrays was investigated as a method for sample preparation for total reflection X-ray fluorescence (TXRF) spectroscopy. Arrays of trace metals in solution were deposited on Si wafers. The array deposits provide a capability of depositing closely spaced (100 mu m or less), typically 5-20 mu m diameter droplets in an area that can be matched to the analysis spot of the TXRF detector. The dried depositions were physically characterized and the effect of deposition type and matrix on the TXRF signal was investigated. (C) 2010 Elsevier B.V. All rights reserved. C1 [Sparks, Chris M.] SVTC Technol, Analyt Serv, Austin, TX 78741 USA. [Fittschen, Ursula E. A.; Havrilla, George J.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. [Fittschen, Ursula E. A.] Univ Hamburg, Inst Inorgan & Appl Chem, D-20146 Hamburg, Germany. RP Sparks, CM (reprint author), SVTC Technol, Analyt Serv, Austin, TX 78741 USA. EM chris.sparks@svtc.com RI fittschen, ursula/Q-1049-2015; OI Havrilla, George/0000-0003-2052-7152 FU DFG FX The authors thank Hewlett Packard Company for the loan of the TIPS device and their collaboration in developing this technology for analytical applications. The "thermal inkjet pico-fluidic system" (TIPS) is a prototype laboratory device used internally at Hewlett Packard and with selected research partners. CMS would like to thank Emily Morales of SVTC Technologies for the SEM and AFM images. UEAF would like to acknowledge DFG funding. NR 34 TC 14 Z9 15 U1 0 U2 9 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 SEP-OCT PY 2010 VL 65 IS 9-10 BP 805 EP 811 DI 10.1016/j.sab.2010.07.003 PG 7 WC Spectroscopy SC Spectroscopy GA 669GA UT WOS:000283334700004 ER PT J AU Ashworth, SP Nguyen, DN AF Ashworth, S. P. Nguyen, D. N. TI The electrical measurement of AC losses in a three-phase tri-axial superconducting cable SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID TEMPERATURE-DEPENDENCE; TRANSPORT CURRENT; MAGNETIC-FIELD; TAPES AB In a three-phase tri-axial cable, the magnetic interaction between the phases makes the loss measurement by an electromagnetic method very complex. We developed the theoretical background showing that three-phase AC loss measurements by the electromagnetic method are, in principle, possible. We then implemented this theory in practical measurements on a 3 m long, tri-axial cable fabricated from RABiTS (rolling-assisted biaxially textured substrate) coated conductor. Initially, the proposed measurement technique was implemented in the simpler cases when the three cable phases are 180 degrees out of phase, i.e. (0 degrees, 180 degrees, 360 degrees) or (0 degrees, 360 degrees, 180 degrees) rather than (0 degrees, 120 degrees, 240 degrees) as in a traditional three-phase system. For these cases, the currents in the phases are either in phase (360 degrees phase difference) or anti-phase (180 degrees phase difference). These are essentially single-phase measurements with only one transport current used as the supply for all three phases. This simplification allowed us to use both the established and the proposed techniques to measure the total losses of the cable for these cases. An excellent agreement between the two measurement methods confirmed the validation of our proposed measurement technique. The proposed measurement method was then employed to measure the total AC losses in a cable when it operates in the true three-phase mode. We believe that these data represent the first electromagnetic three-phase AC loss measurements. C1 [Ashworth, S. P.; Nguyen, D. N.] Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. RP Ashworth, SP (reprint author), Los Alamos Natl Lab, Superconduct Technol Ctr, POB 1663, Los Alamos, NM 87545 USA. EM doan@lanl.gov RI Nguyen, Doan/F-3148-2010 FU US Department of Homeland Security FX Authors wish to thank Ultera for providing the three-phase tri-axial HTS cable used in experiments. This work was supported by the US Department of Homeland Security. NR 17 TC 0 Z9 0 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD SEP PY 2010 VL 23 IS 9 AR 095009 DI 10.1088/0953-2048/23/9/095009 PG 8 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 639HC UT WOS:000280963500010 ER PT J AU Feldmann, DM Holesinger, TG Maiorov, B Foltyn, SR Coulter, JY Apodaca, I AF Feldmann, D. M. Holesinger, T. G. Maiorov, B. Foltyn, S. R. Coulter, J. Y. Apodaca, I. TI Improved flux pinning in YBa2Cu3O7 with nanorods of the double perovskite Ba2YNbO6 SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID CRITICAL-CURRENT-DENSITY; COATED CONDUCTORS; THIN-FILMS; SUPERCONDUCTING MATERIALS; YBCO FILMS; LANDSCAPE; SUBSTRATE; PHASE; WIRE AB We report significantly enhanced critical current densities (Jc) and flux pinning forces (F-p) in applied magnetic fields for YBa2Cu3O7 (YBCO) films with embedded Ba2YNbO6 (BYNO) nanorods. The films were grown by pulsed laser deposition with a target consisting of YBa(2)Cu(3)Oy with five molar per cent additions of BaNbOy and Y2O3. With this composition, deposited films were found to contain a high density of BYNO nanorods that frequently traversed the entire thickness of the film (up to 1 mu m), depending upon the deposition conditions. Enhanced Jc performance occurs primarily for applied field orientations near the c-axis of the YBCO, which is nominally along the growth direction of the BYNO nanorods. The threading nanorod density of one film of the present work was measured by plan-view transmission electron microscopy to be 710-850 nanorods mu m(-2). For approximately 1 mu m thick films, typical J(c)(75.6 K, sf) and J(c)(75.6 K, 1 T parallel to c) values were similar to 4.5 MA cm(-2) and 1.3-1.5 MA cm(-2), respectively. For a 0.5 mu m thick film, J(c)(75.6 K, 1 T parallel to c) > 2 MA cm(-2) was achieved, and values of F-p in excess of 30 and 120 GN m(-3) were achieved at 75.5 K and 65 K, respectively. C1 [Feldmann, D. M.; Holesinger, T. G.; Maiorov, B.; Foltyn, S. R.; Coulter, J. Y.; Apodaca, I.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Feldmann, DM (reprint author), Los Alamos Natl Lab, MS K763, Los Alamos, NM 87545 USA. OI Maiorov, Boris/0000-0003-1885-0436 NR 32 TC 64 Z9 64 U1 3 U2 26 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD SEP PY 2010 VL 23 IS 9 AR 095004 DI 10.1088/0953-2048/23/9/095004 PG 6 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 639HC UT WOS:000280963500005 ER PT J AU Zhu, Y Pogrebnyakov, AV Wilke, RH Chen, K Xi, XX Redwing, JM Zhuang, CG Feng, QR Gan, ZZ Singh, RK Shen, Y Newman, N Rowell, JM Hunte, F Jaroszynski, J Larbalestier, DC Baily, SA Balakirev, FF Voyles, PM AF Zhu, Y. Pogrebnyakov, A. V. Wilke, R. H. Chen, K. Xi, X. X. Redwing, J. M. Zhuang, C. G. Feng, Q. R. Gan, Z. Z. Singh, R. K. Shen, Y. Newman, N. Rowell, J. M. Hunte, F. Jaroszynski, J. Larbalestier, D. C. Baily, S. A. Balakirev, F. F. Voyles, P. M. TI Nanoscale disorder in pure and doped MgB2 thin films SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID CHEMICAL VAPOR-DEPOSITION; CRITICAL-CURRENT DENSITY; IRREVERSIBILITY FIELD; MAGNESIUM DIBORIDE; DEGRADATION; ENHANCEMENT; GROWTH; WATER; H-C2; J(C) AB MgB2 thin films have superior superconducting properties compared to bulk MgB2 and demonstrate the potential for further improving the performances of MgB2 wires and tapes. Using transmission electron microscopy, we have characterized the microstructure of pure and C-doped MgB2 using various carbon sources grown by hybrid physical-chemical vapor deposition (HPCVD), and cold-grown-annealed film deposited by molecular beam epitaxy (MBE). The MgB2 HPCVD films increase in crystal quality in the order (MeCp)(2)Mg-sourced films, CH4-sourced films, B(CH3)(3)-sourced films, pure films, while the H-c2 values of these films follow the opposite order. The cold-grown-annealed MgB2 MBE film contains non-epitaxial <= 10 nm MgB2 grains and MgO nanoparticles. The microstructural origins of electron scattering and flux pinning in both films are discussed. We also show the structure and chemistry of the degraded phase in HPCVD films and its effects on superconducting properties. C1 [Zhu, Y.; Voyles, P. M.] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA. [Pogrebnyakov, A. V.; Wilke, R. H.; Chen, K.; Xi, X. X.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA. [Pogrebnyakov, A. V.; Wilke, R. H.; Chen, K.; Xi, X. X.; Redwing, J. M.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA. [Pogrebnyakov, A. V.; Wilke, R. H.; Chen, K.; Xi, X. X.; Redwing, J. M.] Penn State Univ, Engn & Mat Res Inst, University Pk, PA 16802 USA. [Zhuang, C. G.; Feng, Q. R.; Gan, Z. Z.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China. [Zhuang, C. G.; Feng, Q. R.; Gan, Z. Z.] Peking Univ, State Key Lab Artificial Microstruct & Mesoscop P, Beijing 100871, Peoples R China. [Singh, R. K.; Shen, Y.; Newman, N.; Rowell, J. M.] Arizona State Univ, Sch Mech Aerosp Chem & Mat Engn, Tempe, AZ 85287 USA. [Hunte, F.; Jaroszynski, J.; Larbalestier, D. C.] Florida State Univ, Ctr Appl Superconduct, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. [Baily, S. A.; Balakirev, F. F.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Zhu, Y (reprint author), Univ Wisconsin, Dept Mat Sci & Engn, 1509 Univ Ave, Madison, WI 53706 USA. EM voyles@engr.wisc.edu RI Zhu, Ye/A-1844-2011; Newman, Nathan/E-1466-2011; Larbalestier, David/B-2277-2008; OI Zhu, Ye/0000-0002-5217-493X; Newman, Nathan/0000-0003-2819-9616; Larbalestier, David/0000-0001-7098-7208; Voyles, Paul/0000-0001-9438-4284 FU NSF [DMR 0514592, DMR-0306746, DMR-0514592, DMR-0084173]; ONR [N00014-07-1-0079, N0014-01-1-0006, N00014-05-1-0105, N00014-06-1-1153]; National Science Foundation of China [50572001]; National '973' project in China [2006CD601004]; NHMFL UCG [227000-520-008068-5063]; FRG [DMR 0514592] FX We thank Dr Alex Gurevich for helpful discussions. Work at UW was supported by the NSF FRG on MgB2 (DMR 0514592). Work at Penn State was supported in part by NSF (DMR-0306746, XXX and JMR) and ONR (N00014-07-1-0079, XXX; and N0014-01-1-0006, JMR). Work at Peking University was supported by the National Science Foundation of China (No. 50572001) and the National '973' project in China (No. 2006CD601004). Work at ASU was supported by the NSF (DMR-0514592) and ONR (N00014-05-1-0105 and N00014-06-1-1153). Work at FSU was supported by NHMFL UCG 227000-520-008068-5063 and performed at the National High Magnetic Field Laboratory, which was supported by NSF Cooperative Agreement No. DMR-0084173, by the State of Florida and by the DOE. Additional support was provided by FRG on MgB2 (DMR 0514592). NR 40 TC 3 Z9 3 U1 1 U2 13 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 EI 1361-6668 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD SEP PY 2010 VL 23 IS 9 AR 095008 DI 10.1088/0953-2048/23/9/095008 PG 11 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 639HC UT WOS:000280963500009 ER PT J AU Ford, DC Nilekar, AU Xu, Y Mavrikakis, M AF Ford, Denise C. Nilekar, Anand Udaykumar Xu, Ye Mavrikakis, Manos TI Partial and complete reduction of O-2 by hydrogen on transition metal surfaces SO SURFACE SCIENCE LA English DT Article DE Density functional calculations; Oxygen reduction; Hydrogen peroxide; Fuel cells; Electrocatalysis; Platinum; Palladium; Gold; Silver; Copper ID DENSITY-FUNCTIONAL THEORY; TOTAL-ENERGY CALCULATIONS; TEMPERATURE CO OXIDATION; ELASTIC BAND METHOD; OXYGEN-REDUCTION; MOLECULAR ADSORPTION; FUEL-CELL; PREFERENTIAL OXIDATION; ELECTRONIC-STRUCTURE; PALLADIUM CATALYSTS AB The metal-catalyzed reduction of di-oxygen (O-2) by hydrogen is at the heart of direct synthesis of hydrogen peroxide (HOOH) and power generation by proton exchange membrane fuel cells. Despite its apparent simplicity, how the reaction proceeds on different metals is not yet well understood. We present a systematic study of O-2 reduction on the (111) facets of eight transition metals (Rh, Ir, Ni, Pd, Pt, Cu, Ag, and Au) based on periodic density functional theory (DFT-GGA) calculations. Analysis of ten surface elementary reaction steps suggests three selectivity regimes as a function of the binding energy of atomic oxygen (BEO), delineated by the opposite demands to catalyze O-O bond scission and O-H bond formation: The dissociative adsorption of 02 prevails on Ni, Rh, Ir, and Cu; the complete reduction to water via associative (peroxyl, peroxide, and aquoxyl) mechanisms prevails on Pd, Pt, and Ag; and HOOH formation prevails on Au. The reducing power of hydrogen is decreased electrochemically by increasing the electrode potential. This hinders the hydrogenation of oxygen species and shifts the optimal selectivity for water to less reactive metals. Our results point to the important role of the intrinsic reactivity of metals in the selectivity of O-2 reduction, provide a unified basis for understanding the metal-catalyzed reduction of O-2 to H2O and HOOH, and offer useful insights for identifying new catalysts for desired oxygen reduction products. (C) 2010 Elsevier B.V. All rights reserved. C1 [Xu, Ye] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Ford, Denise C.; Nilekar, Anand Udaykumar; Mavrikakis, Manos] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA. RP Xu, Y (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, POB 2008, Oak Ridge, TN 37831 USA. EM xuy2@ornl.gov; manos@engr.wisc.edu RI Xu, Ye/B-5447-2009; Mavrikakis, Manos/D-5702-2012 OI Xu, Ye/0000-0002-6406-7832; Mavrikakis, Manos/0000-0002-5293-5356 FU U.S. DOE-BES Chemical Sciences Division [DE-FG02-05ER15731, DE-FG02-03ER15468]; Division of Scientific User Facilities, U.S. DOE; U.S. Department of Energy, Office of Science [DE-AC02-06CH11357, DEAC05-00OR22725, DE-AC02-05CH11231] FX We thank Prof. James Dumesic for helpful discussions. Work at UW-Madison was supported by the U.S. DOE-BES Chemical Sciences Division (DE-FG02-05ER15731 and DE-FG02-03ER15468), and S.C. Johnson. A portion of this research was conducted at the Center for Nanophase Materials Sciences, which is sponsored at ORNL by the Division of Scientific User Facilities, U.S. DOE. The computational work was performed in part using supercomputing resources from the following institutions: EMSL, a National scientific user facility at Pacific Northwest National Laboratory (PNNL); the Center for Nanoscale Materials at Argonne National Laboratory (ANL); the National Center for Computational Sciences at Oak Ridge National Laboratory (ORNL); and the National Energy Research Scientific Computing Center (NERSC). EMSL is sponsored by the Department of Energy's Office of Biological and Environmental Research located at PNNL CNM, NCCS, and ORNL are supported by the U.S. Department of Energy, Office of Science, under contracts DE-AC02-06CH11357, DEAC05-00OR22725, and DE-AC02-05CH11231, respectively. NR 93 TC 74 Z9 74 U1 9 U2 122 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD SEP PY 2010 VL 604 IS 19-20 BP 1565 EP 1575 DI 10.1016/j.susc.2010.05.026 PG 11 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 652HB UT WOS:000281993200006 ER PT J AU Henderson, MA AF Henderson, Michael A. TI Photochemistry of methyl bromide on the alpha-Cr2O3(0001) surface SO SURFACE SCIENCE LA English DT Article DE Surface photochemistry; Photon stimulated desorption (PSD); Thermal desorption spectroscopy; Chromium oxide; Methyl bromide ID LASER-INDUCED DESORPTION; DISSOCIATIVE ELECTRON-ATTACHMENT; INITIO TOTAL-ENERGY; ADSORBED MOLECULES; OXIDE SURFACES; AB-INITIO; CR2O3(0001) SURFACE; WORK FUNCTION; 193 NM; RESONANT PHOTOEMISSION AB The photochemical properties of the Cr-terminated alpha-Cr2O3(0001) surface were explored using methyl bromide (CH3Br) as a probe molecule. CH3Br adsorbed and desorbed molecularly from the Cr-terminated alpha-Cr2O3(0001) surface without detectable thermal decomposition. Temperature programmed desorption (TPD) revealed a CH3Br desorption state at 240 K for coverages up to 0.5 ML, followed by more weakly bound molecules desorbing at 175 K for coverages up to 1 ML Multilayer exposures led to desorption at similar to 130 K. The CH3Br sticking coefficient was unity at 105 K for coverages up to monolayer saturation, but decreased as the multilayer formed. In contrast, pre-oxidation of the surface (using an oxygen plasma source) led to capping of surface Cr3+ sites and near complete removal of CH3Br TPD states above 150 K. The photochemistry of chemisorbed CH3Br was explored on the Cr-terminated surface using post-irradiation TPD and photon stimulated desorption (PSD). Irradiation of adsorbed CH3Br with broad band light from a Hg arc lamp resulted in both photodesorption and photodecomposition of the parent molecule at a combined cross section of similar to 10(-22) cm(2). Photodissociation of the CH3-Br bond was evidenced by both CH3 detected in PSD and Br atoms left on the surface. Use of a 385 nm cut-off filter effectively shut down the photodissociation pathway but not the parent molecule photodesorption process. From these observations it is inferred that d-to-d transitions in alpha-Cr2O3, occurring at photon energies <3 eV, do not significantly promote photodecomposition of adsorbed CH3Br. It is unclear to what extent band-to-band versus direct CH3Br photolysis play in CH3-Br bond dissociation initiated by more energetic photons. (C) 2010 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA. RP Henderson, MA (reprint author), Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA. EM ma.henderson@pnl.gov FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences; U.S. Department of Energy by the Battelle Memorial Institute [DEAC06-76RLO1830]; Office of Biological and Environmental Research FX The author thanks Scott Chambers for growth of the alpha-Cr2O3 (0001) film. Work reported here was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences. Pacific Northwest National Laboratory is a multiprogram national laboratory operated for the U.S. Department of Energy by the Battelle Memorial Institute under contract DEAC06-76RLO1830. The experimental studies reported here were performed in the William R. Wiley Environmental Molecular Science Laboratory (EMSL), a Department of Energy user facility funded by the Office of Biological and Environmental Research. NR 113 TC 11 Z9 12 U1 2 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD SEP PY 2010 VL 604 IS 19-20 BP 1800 EP 1807 DI 10.1016/j.susc.2010.07.008 PG 8 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 652HB UT WOS:000281993200041 ER PT J AU Lilga, MA Hallen, RT Gray, M AF Lilga, Michael A. Hallen, Richard T. Gray, Michel TI Production of Oxidized Derivatives of 5-Hydroxymethylfurfural (HMF) SO TOPICS IN CATALYSIS LA English DT Article DE 5-Hydroxymethylfurfural; 2,5-Furandicarboxylic acid; 5-Formyl-2-furancarboxylic acid; 2,5-Diformylfuran; Oxidation ID 2,5-FURANDICARBOXYLIC ACID; OXIDATION; 2,5-DIFORMYLFURAN; CATALYSTS; CHEMISTRY; FRUCTOSE; FURANS AB 5-Hydroxymethylfurfural (HMF) was catalytically converted in a bench-scale flow reactor to the oxidized derivatives 2,5-furandicarboxylic acid (FDCA), 5-formyl-2-furancarboxylic acid (FFCA), and 2,5-diformylfuran (DFF). Conversions and selectivities to these products depended on oxidant, pH, catalyst, and reactor operating conditions. The feasibility of producing these species in a flow reactor was demonstrated. C1 [Lilga, Michael A.; Hallen, Richard T.; Gray, Michel] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Lilga, MA (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd,MSIN P8-60,POB 999, Richland, WA 99352 USA. EM mike.lilga@pnl.gov FU Battelle Memorial Institute; Archer Daniels Midland FX The authors thank Jim White and John Hu for discussions and laboratory support, Alan Cooper and Dani Muzatko for analytical support, and Battelle Memorial Institute and Archer Daniels Midland for financing this work. NR 21 TC 71 Z9 76 U1 8 U2 140 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD SEP PY 2010 VL 53 IS 15-18 BP 1264 EP 1269 DI 10.1007/s11244-010-9579-4 PG 6 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA 630AK UT WOS:000280242900055 ER PT J AU Jager, HI Lepla, KB Van Winkle, W James, BW McAdam, SO AF Jager, Henriette I. Lepla, Ken B. Van Winkle, Webb James, Brad W. McAdam, Steven O. TI The Elusive Minimum Viable Population Size for White Sturgeon SO TRANSACTIONS OF THE AMERICAN FISHERIES SOCIETY LA English DT Article ID LOWER COLUMBIA-RIVER; ACIPENSER-TRANSMONTANUS; REGRESSION QUANTILES; POTENTIAL PRODUCTION; SPAWNING BEHAVIOR; EXTINCTION RISK; CANADA; STOCHASTICITY; DYNAMICS; CONSEQUENCES AB Damming of large rivers in the U.S. Pacific Northwest and Canada has divided the historical population of white sturgeon Acipenser transmontanus into more than 36 fragmented populations, few of which are thriving. We now face the challenge of managing these populations to avoid extirpation. Two goals of this study were to identify extinction thresholds related to small size and inadequate habitat for this species. The minimum viable population size (MVP) is the threshold size above which populations support recruitment and grow and below which populations fail to support recruitment and decline. We estimated a single, cross-population MVP using data from multiple populations and quantile regression, which removed the effects of factors other than population size. Only two populations (those in the Bonneville and Dalles reservoirs on the Columbia River), both with significant increasing trends, were larger than our MVP estimate. We detected significant decreasing trends in two populations-those below Bonneville Dam and in the Kootenai River. To discover how site-specific differences in river habitat influence MVP, we used a population viability analysis (PVA) model that incorporated Allee mechanisms. The PVA model identified a river segment length below which extinction was certain regardless of initial population size. Above this threshold, simulated populations in river segments that were longer or that provided more frequent recruitment opportunities were able to persist with smaller initial sizes. Two priorities emerged for white sturgeon: monitoring age structure and understanding the circumstances preventing recruitment to age 1. Our results ultimately guided us toward thresholds in rearing habitat and age structure that promise to develop into more useful conservation tools than MVP for this and similar long-lived species. C1 [Jager, Henriette I.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. [Lepla, Ken B.] Idaho Power Co, Environm Affairs, Boise, ID 83702 USA. [Van Winkle, Webb] Winkle Environm Consulting, Boise, ID 83714 USA. [James, Brad W.] Washington Dept Fish & Wildlife, Vancouver, WA 98661 USA. [McAdam, Steven O.] Univ British Columbia, British Columbia Minist Environm, Vancouver, BC V6T 1Z4, Canada. RP Jager, HI (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA. EM jagerhi@ornl.gov OI Jager, Henriette/0000-0003-4253-533X FU Idaho Power Company under U.S. Department of Energy (DOE) [ERD-99-1813]; DOE [DE-AC05-00OR22725] FX This research grew out of an earlier informal comparison that was presented by Webb Van Winkle at the 2004 American Fisheries Society meeting in Madison, Wisconsin. Other coauthors included Paul Anders, Larry Hildebrand, Tom Rien, and Ken Lepla. White sturgeon population data for upper Columbia River in Canada and Canadian rivers was kindly provided to us by Larry Hildebrand and Robyn Irvine (Golder Associates Ltd., Castlegar, British Columbia), and Troy Nelson (Fraser River Sturgeon Conservation Society). We thank Brian Cade (U.S. Geological Survey) for his advice regarding construction of quantile regression confidence intervals. We appreciate three thorough reviews that greatly improved the manuscript. This research was sponsored in part by Idaho Power Company under U.S. Department of Energy (DOE) contract no. ERD-99-1813. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the DOE under contract DE-AC05-00OR22725. 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, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. Government purposes. NR 91 TC 3 Z9 3 U1 1 U2 20 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0002-8487 EI 1548-8659 J9 T AM FISH SOC JI Trans. Am. Fish. Soc. PD SEP PY 2010 VL 139 IS 5 BP 1551 EP 1565 DI 10.1577/T09-069.1 PG 15 WC Fisheries SC Fisheries GA 659VC UT WOS:000282594000023 ER PT J AU Sexton, AM Sadeghi, AM Zhang, X Srinivasan, R Shirmohammadi, A AF Sexton, A. M. Sadeghi, A. M. Zhang, X. Srinivasan, R. Shirmohammadi, A. TI USING NEXRAD AND RAIN GAUGE PRECIPITATION DATA FOR HYDROLOGIC CALIBRATION OF SWAT IN A NORTHEASTERN WATERSHED SO TRANSACTIONS OF THE ASABE LA English DT Article DE Hydrologic modeling; Model calibration; MPE; NEXRAD; Rain gauge; SWAT ID CATCHMENT MODELS; STORM MOVEMENT; RIVER-BASIN; TEXAS; DIRECTION; FLOW AB The value of watershed-scale, hydrologic and water quality models to ecosystem management is increasingly evident as more programs adopt these tools to evaluate the effectiveness of different management scenarios and their impact on the environment. Quality of precipitation data is critical for appropriate application of watershed models. In small watersheds, where no dense rain gauge network is available, modelers are faced with a dilemma to choose between different data sets. In this study, we used the German Branch (GB) watershed (similar to 50 km(2)), which is included in the USDA Conservation Effects Assessment Project (CEAP), to examine the implications of using surface rain gauge and next-generation radar (NEXRAD) precipitation data sets on the performance of the Soil and Water Assessment Tool (SWAT). The GB watershed is located in the Coastal Plain of Maryland on the eastern shore of Chesapeake Bay. Stream flow estimation results using surface rain gauge data seem to indicate the importance of using rain gauges within the same direction as the storm pattern with respect to the watershed. In the absence of a spatially representative network of rain gauges within the watershed, NEXRAD data produced good estimates of stream flow at the outlet of the watershed. Three NEXRAD datasets, including (1) non-corrected (NC), (2) bias-corrected (BC), and (3) inverse distance weighted (IDW) corrected NEXRAD data, were produced. Nash-Sutcliffe efficiency coefficients for daily stream flow simulation using these three NEXRAD data ranged from 0.46 to 0.58 during calibration and from 0.68 to 0.76 during validation. Overall, correcting NEXRAD with rain gauge data is promising to produce better hydrologic modeling results. Given the multiple precipitation datasets and corresponding simulations, we explored the combination of the multiple simulations using Bayesian model averaging. The results show that this Bayesian scheme can produce better deterministic prediction than any single simulation and can provide reasonable uncertainty estimation. The optimal water balance obtained in this study is an essential precursor to acquiring realistic estimates of sediment and nutrient loads in future GB modeling efforts. The results presented in this study are expected to provide insights into selecting precipitation data for watershed modeling in small Coastal Plain catchments. C1 [Sexton, A. M.; Sadeghi, A. M.] USDA ARS, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA. [Sexton, A. M.] Univ Maryland, Fischell Dept Bioengn, College Pk, MD 20742 USA. [Zhang, X.] Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD USA. [Srinivasan, R.] Texas A&M Univ, Dept Ecosyst Sci & Management, Spatial Sci Lab, College Stn, TX USA. [Shirmohammadi, A.] Univ Maryland, Coll Agr & Nat Resources, College Pk, MD 20742 USA. RP Sexton, AM (reprint author), USDA ARS, Hydrol & Remote Sensing Lab, 10300 Baltimore Ave,BARC W Bldg 007, Beltsville, MD 20705 USA. EM aisha.sexton@gmail.com RI zhang, xuesong/B-7907-2009; Srinivasan, R/D-3937-2009 NR 39 TC 30 Z9 31 U1 2 U2 15 PU AMER SOC AGRICULTURAL & BIOLOGICAL ENGINEERS PI ST JOSEPH PA 2950 NILES RD, ST JOSEPH, MI 49085-9659 USA SN 0001-2351 J9 T ASABE JI Trans. ASABE PD SEP-OCT PY 2010 VL 53 IS 5 BP 1501 EP 1510 PG 10 WC Agricultural Engineering SC Agriculture GA 687ZY UT WOS:000284818500013 ER PT J AU Srinivasan, R Zhang, X Arnold, J AF Srinivasan, R. Zhang, X. Arnold, J. TI SWAT UNGAUGED: HYDROLOGICAL BUDGET AND CROP YIELD PREDICTIONS IN THE UPPER MISSISSIPPI RIVER BASIN SO TRANSACTIONS OF THE ASABE LA English DT Article DE Crop yield; Soil and Water Assessment Tool; Streamflow; Ungauged basin; Upper Mississippi River basin ID GLOBAL OPTIMIZATION; MODEL EVALUATION; WATER-QUALITY; UNITED-STATES; UNCERTAINTY; CALIBRATION; VALIDATION; ALGORITHMS; FUTURE; REGIONALIZATION AB Physically based, distributed hydrologic models are increasingly used in assessments of water resources, best management practices, and climate and land use changes. Model performance evaluation in ungauged basins is an important research topic. In this study, we propose a framework for developing Soil and Water Assessment Tool (SWAT) input data, including hydrography, terrain, land use, soil, tile, weather, and management practices, for the Upper Mississippi River basin (UMRB). We also present a performance evaluation of SWAT hydrologic budget and crop yield simulations in the UMRB without calibration. The uncalibrated SWAT model ably predicts annual streamflow at 11 USGS gauges and crop yield at a four-digit hydrologic unit code (HUC) scale. For monthly streamflow simulation, the performance of SWAT is marginally poor compared with that of annual flow, which may be due to incomplete information about reservoirs and dams within the UMRB. Further validation shows that SWAT can predict base flow contribution ratio reasonably well. Compared with three calibrated SWAT models developed in previous studies of the entire UMRB, the uncalibrated SWAT model presented here can provide similar results. Overall, the SWAT model can provide satisfactory predictions on hydrologic budget and crop yield in the UMRB without calibration. The results emphasize the importance and prospects of using accurate spatial input data for the physically based SWAT model. This study also examines biofuel-biomass production by simulating all agricultural lands with switchgrass, producing satisfactory results in estimating biomass availability for biofuel production. C1 [Srinivasan, R.] Texas A&M Univ, Spatial Sci Lab, Dept Ecosyst Sci & Management, College Stn, TX 77845 USA. [Srinivasan, R.] Texas A&M Univ, Spatial Sci Lab, Dept Biol & Agr Engn, College Stn, TX 77845 USA. [Zhang, X.] Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD USA. [Arnold, J.] USDA ARS, Grassland Soil & Water Res Lab, Temple, TX 76502 USA. RP Srinivasan, R (reprint author), Texas A&M Univ, Spatial Sci Lab, Dept Ecosyst Sci & Management, 1500 Res Pkwy,Suite B223, College Stn, TX 77845 USA. EM r-srinivasan@tamu.edu RI zhang, xuesong/B-7907-2009; Srinivasan, R/D-3937-2009 FU U.S. Environmental Protection Agency [EPA G-1469-1 2008-35615-04666]; U.S. Department of Energy Great Lakes Bioenergy Research Center (DOE BER Office of Science) [DE-FC02-07ER64494] FX This study is partially supported by the U.S. Environmental Protection Agency's Science to Achieve Results (STAR) award (EPA G-1469-1 2008-35615-04666). Dr. Xuesong Zhang is supported by the U.S. Department of Energy Great Lakes Bioenergy Research Center (DOE BER Office of Science DE-FC02-07ER64494). NR 53 TC 101 Z9 103 U1 1 U2 35 PU AMER SOC AGRICULTURAL & BIOLOGICAL ENGINEERS PI ST JOSEPH PA 2950 NILES RD, ST JOSEPH, MI 49085-9659 USA SN 0001-2351 J9 T ASABE JI Trans. ASABE PD SEP-OCT PY 2010 VL 53 IS 5 BP 1533 EP 1546 PG 14 WC Agricultural Engineering SC Agriculture GA 687ZY UT WOS:000284818500016 ER PT J AU Baskaran, L Jager, HI Schweizer, PE Srinivasan, R AF Baskaran, L. Jager, H. I. Schweizer, P. E. Srinivasan, R. TI PROGRESS TOWARD EVALUATING THE SUSTAINABILITY OF SWITCHGRASS AS A BIOENERGY CROP USING THE SWAT MODEL SO TRANSACTIONS OF THE ASABE LA English DT Article DE Bioenergy; Functional validation; River flow; Sensitivity analysis; Sustainability; Switchgrass; Water quality ID WATER ASSESSMENT-TOOL; UNITED-STATES; ECONOMIC-ANALYSIS; QUALITY; FUTURE; ENERGY; FEEDSTOCK; BIOFUELS; IMPACTS; SURFACE AB Adding bioenergy to the U.S. energy portfolio requires long-term profitability for bioenergy producers and long-term protection of affected ecosystems. In this study, we present steps along the path toward evaluating both sides of the sustainability equation (production and environmental) for switch grass (Panicum virgatum) using the Soil and Water Assessment Tool (SWAT). We modeled production of switch grass and river flow using SWAT for current landscapes at a regional scale.. To quantify feedstock production, we compared lowland switchgrass yields simulated by SWAT with estimates from a model based on empirical data for the eastern U.S. The two produced similar geographic patterns. Average yields reported in field trials tended to be higher than average SWAT-predicted yields, which may nevertheless be more representative of production-scale yields. As a preliminary step toward quantifying bioenergy-related changes in water quality, we evaluated flow predictions by the SWAT model for the Arkansas-White-Red river basin. We compared monthly SWAT flow predictions to USGS measurements from 86 subbasins across the region. Although agreement was good, we conducted an analysis of residuals (functional validation) seeking patterns to guide future model improvements. The analysis indicated that differences between SWAT flow predictions and field data increased in downstream subbasins and in subbasins with higher percentage of water Together, these analyses have moved us closer to our ultimate goal of identifying areas with high economic and environmental potential for sustainable feedstock production. C1 [Baskaran, L.; Jager, H. I.; Schweizer, P. E.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Srinivasan, R.] Texas A&M & Texas Agr Expt Stn, Spatial Sci Lab, College Stn, TX USA. RP Baskaran, L (reprint author), Oak Ridge Natl Lab, POB 2008,MS6407, Oak Ridge, TN 37831 USA. EM baskaranl@ornl.gov RI Srinivasan, R/D-3937-2009; Baskaran, Latha/D-9754-2016 OI Baskaran, Latha/0000-0001-8487-3914 FU U.S. Government [DE-AC05-00OR22725]; U.S. Department of Energy [DE-AC05-00OR22725]; U.S. Department of Energy, Office of Biomass Programs; Oak Ridge National Laboratory (ORNL) FX This submission was sponsored by a contractor of the U.S. Government under contract DE-AC05-00OR22725 with the U.S. Department of Energy. The U.S. Government retains, and the publisher, by accepting this submission for publication, acknowledges that the U.S. Government retains, a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this submission, or allow others to do so, for U.S. Government purposes.; This research was funded, in part, by the U.S. Department of Energy, Office of Biomass Programs. Research for the biodiversity modeling was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL), managed by UT-Battelle, LLC, for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. This research benefited from the advice of many knowledgeable bioenergy researchers at ORNL. Anthony Turhollow provided expert advice on mapping of agricultural land cover classifications. Bob Per lack, Robin Graham, and Stan Wullschleger generously provided advice and support for modeling of bioenergy crops. In addition, we would like to thank Craig Brandt and Virginia Dale for reviews of the manuscript. We thank three anonymous reviewers for their helpful comments and improvements to the manuscript. NR 39 TC 19 Z9 19 U1 2 U2 18 PU AMER SOC AGRICULTURAL & BIOLOGICAL ENGINEERS PI ST JOSEPH PA 2950 NILES RD, ST JOSEPH, MI 49085-9659 USA SN 2151-0032 EI 2151-0040 J9 T ASABE JI Trans. ASABE PD SEP-OCT PY 2010 VL 53 IS 5 BP 1547 EP 1556 PG 10 WC Agricultural Engineering SC Agriculture GA 687ZY UT WOS:000284818500017 ER PT J AU Bitra, VSP Womac, AR Igathinathane, C Sokhansanj, S AF Bitra, V. S. P. Womac, A. R. Igathinathane, C. Sokhansanj, S. TI KNIFE MILL COMMINUTION ENERGY ANALYSIS OF SWITCHGRASS, WHEAT STRAW, AND CORN STOVER AND CHARACTERIZATION OF PARTICLE SIZE DISTRIBUTIONS SO TRANSACTIONS OF THE ASABE LA English DT Article DE Direct energy measurement; Energy optimization; Particle size characterization; Rosin-Rammler distribution; Size reduction of biomass; Specific energy ID MECHANICAL ENERGY; REDUCTION; REQUIREMENTS; BIOMASS; GRIND AB Biomass preprocessing and pretreatment technologies such as size reduction and chemical preconditioning are aimed at reducing the cost of ethanol production from lignocellulosic biomass. Size reduction is an energy-intensive biomass preprocessing unit operation. In this study, switch grass, wheat straw, and corn stover were chopped in an instrumented knife mill to evaluate size reduction energy and corresponding particle size distribution as determined with a standard forage sieve analyzer. Direct mechanical power inputs were determined using a dedicated data acquisition system for knife mill screen openings from 12.7 to 50.8 mm, rotor speeds between 250 and 500 rpm, and mass feed rates from 1 to 11 kg/min. A speed of 250 rpm gave optimum performance of the mill. Optimum feed rates for 25.4 mm screen and 250 rpm were 7.6, 5.8, and 4.5 kg/min for switch grass, wheat straw, and corn stover; respectively. Total specific energy (MJ/Mg) was defined as the size reduction energy required to operate the knife mill plus that imparted to the biomass. Effective specific energy was defined as the energy imparted to the biomass. For these conditions, total specific energies were 27.3, 37.9, and 31.9 MJ/Mg and effective specific energies were 10.1, 15.5, and 3.2 MJ/Mg for switchgrass, wheat straw, and corn stover, respectively. These results demonstrated that biomass selection affects the size reduction energy, even for biomass with similar features. Second-order polynomial equations for the total specific energy requirement fitted well (R(2) >= 0.95) as a function of knife mill screen size, mass feed rate, and speed for biomass materials tested. The Rosin-Rammler equation fitted the cumulative undersize mass of switchgrass, wheat straw, and corn stover chop passed through ASABE sieves with high R(2) (>0.983). Knife mill chopping of switchgrass, wheat straw, and corn stover resulted in particle size distributions classified as 'well-graded strongly fine-skewed mesokurtic', 'well-graded fine-skewed mesokurtic', and 'well-graded fine-skewed mesokurtic', respectively, for small knife mill screen sizes (12.7 to 25.4 mm) and distributions classified as 'well-graded fine-skewed mesokurtic', 'well-graded strongly fine-skewed mesokurtic', and 'well-graded fine-skewed mesokurtic', respectively, for the large screen size (50.8 nun). Total and effective specific energy values per unit size reduction of wheat straw were greater compared to those for switchgrass. Corn stover resulted in reduced total and effective specific energy per unit size reduction compared to wheat straw for the same operating conditions, but higher total specific energy per unit size reduction and lesser effective specific energy per unit size reduction compared to switch grass. Data on minimized total specific energy with corresponding particle spectre will be usefill for preparing feed material with a knife mill for subsequent grinding with finer size reduction devices. C1 [Bitra, V. S. P.; Womac, A. R.] Univ Tennessee, Dept Biosyst Engn & Soil Sci, Knoxville, TN 37996 USA. [Igathinathane, C.] N Dakota State Univ, Dept Agr & Biosyst Engn, Fargo, ND 58105 USA. [Sokhansanj, S.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Womac, AR (reprint author), Univ Tennessee, Dept Biosyst Engn & Soil Sci, Knoxville, TN 37996 USA. EM awomac@utk.edu OI Cannayen, Igathinathane/0000-0001-8884-7959 FU USDA-DOE Biomass Research and Development Initiative [DE-PA36-04GO94002]; DOE through the Southeastern Regional Sun Grant Center FX This research was supported in part by USDA-DOE Biomass Research and Development Initiative DE-PA36-04GO94002 and DOE funding through the Southeastern Regional Sun Grant Center. NR 29 TC 3 Z9 4 U1 1 U2 15 PU AMER SOC AGRICULTURAL & BIOLOGICAL ENGINEERS PI ST JOSEPH PA 2950 NILES RD, ST JOSEPH, MI 49085-9659 USA SN 0001-2351 J9 T ASABE JI Trans. ASABE PD SEP-OCT PY 2010 VL 53 IS 5 BP 1639 EP 1651 PG 13 WC Agricultural Engineering SC Agriculture GA 687ZY UT WOS:000284818500025 ER PT J AU Mohandas, N Chasis, JA AF Mohandas, Narla Chasis, Joel Anne TI The erythroid niche: Molecular processes occurring within erythroblastic islands SO TRANSFUSION CLINIQUE ET BIOLOGIQUE LA English DT Article DE Erythropoiesis; Erythroid niche; Erythroblastic island; ICAM-4; Protein sorting; Enucleation; Hereditary spherocytosis; Hereditary elliptocytosis AB Erythroblasts terminally differentiate within specialized niches composed of erythroblast islands nesting in extracellular matrix proteins A number of adhesion molecules active in erythroid island attachments have been identified We have recently observed a receptor/counter receptor Interaction that appears to maintain Island integrity erythroid ICAM-4 interacting with macrophage alpha V integrin When 1CAM-4/alpha V binding is blocked, a 70% decrease in islands is observed Moreover, erythroblastic islands are markedly decreased in ICAM-4 null mice Using erythropoietin to examine whether ICAM-4/alpha V binding plays a role in stress erythropoiesis, we found that the reticulocyte response is different in ICAM-4 null mice compared to control mice We speculate that this may be a reflection of the baseline decrease in island number in the ICAM-4 null mice Erythroblast enucleation also occurs within the erythroid niche Earlier, we examined whether abnormal protein sorting during nuclear extrusion creates the deficiencies of membrane proteins that are well described in hereditary spherocytosis (HS) and hereditary elliptocytosis (HE) We observed that whereas glycophorin C partitions to reticulocytes in normal mouse cells, it sorts to extruding nuclei in murine hereditary elliptocytosis cells Additionally, in a murine model of hereditary spherocytosis, band 3, glycophorin A and RhAG partition to both nuclei and reticulocytes, while in normal cells these three proteins distribute predominantly to reticulocytes Hence, it appears that abnormal protein sorting generates specific protein deficiencies in hereditary elliptocytosis and hereditary spherocytosis (C) 2010 Elsevier Masson SAS All rights reserved C1 [Chasis, Joel Anne] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. [Mohandas, Narla] New York Blood Ctr, Red Cell Physiol Lab, New York, NY 10065 USA. RP Chasis, JA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Bldg 84,1 Cyclotron Rd, Berkeley, CA 94720 USA. FU National Institutes of Health [DK26263, DK56267, DK32094, HL31579]; Office of Health and Environment Research Division, US Department of Energy [DE-AC03-76SF00098] FX This work is supported by National Institutes of Health Grants DK26263, DK56267, DK32094 and HL31579 and by the Director, Office of Health and Environment Research Division, US Department of Energy, under Contract DE-AC03-76SF00098. NR 5 TC 13 Z9 13 U1 0 U2 3 PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER PI PARIS PA 23 RUE LINOIS, 75724 PARIS, FRANCE SN 1246-7820 J9 TRANSFUS CLIN BIOL JI Transfu. Clin. Biol. PD SEP PY 2010 VL 17 IS 3 BP 110 EP 111 DI 10.1016/j.tracli.2010.05.009 PG 2 WC Hematology; Immunology SC Hematology; Immunology GA 646LY UT WOS:000281543300004 PM 20655267 ER PT J AU Crandall, D Ahmadi, G Smith, DH AF Crandall, Dustin Ahmadi, Goodarz Smith, Duane H. TI Computational Modeling of Fluid Flow through a Fracture in Permeable Rock SO TRANSPORT IN POROUS MEDIA LA English DT Article DE Fractured porous media; Single-phase flow; Friction-factor; Cubic law; Navier-Stokes CFD ID SINGLE FRACTURE; ROUGH FRACTURE; DIMENSION; APERTURE; DISCONTINUITIES; VISUALIZATION AB Laminar, single-phase, finite-volume solutions to the Navier-Stokes equations of fluid flow through a fracture within permeable media have been obtained. The fracture geometry was acquired from computed tomography scans of a fracture in Berea sandstone, capturing the small-scale roughness of these natural fluid conduits. First, the roughness of the two-dimensional fracture profiles was analyzed and shown to be similar to Brownian fractal structures. The permeability and tortuosity of each fracture profile was determined from simulations of fluid flow through these geometries with impermeable fracture walls. A surrounding permeable medium, assumed to obey Darcy's Law with permeabilities from 0.2 to 2,000 millidarcies, was then included in the analysis. A series of simulations for flows in fractured permeable rocks was performed, and the results were used to develop a relationship between the flow rate and pressure loss for fractures in porous rocks. The resulting friction-factor, which accounts for the fracture geometric properties, is similar to the cubic law; it has the potential to be of use in discrete fracture reservoir-scale simulations of fluid flow through highly fractured geologic formations with appreciable matrix permeability. The observed fluid flow from the surrounding permeable medium to the fracture was significant when the resistance within the fracture and the medium were of the same order. An increase in the volumetric flow rate within the fracture profile increased by more than 5% was observed for flows within high permeability-fractured porous media. C1 [Crandall, Dustin; Smith, Duane H.] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA. [Crandall, Dustin; Ahmadi, Goodarz] Clarkson Univ, Mech & Aeronaut Engn Dept, Potsdam, NY 13699 USA. RP Crandall, D (reprint author), US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA. EM Dustin.Crandall@nr.netl.doe.gov; ahmadi@clarkson.edu NR 34 TC 18 Z9 18 U1 4 U2 29 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0169-3913 J9 TRANSPORT POROUS MED JI Transp. Porous Media PD SEP PY 2010 VL 84 IS 2 BP 493 EP 510 DI 10.1007/s11242-009-9516-9 PG 18 WC Engineering, Chemical SC Engineering GA 641GF UT WOS:000281112100015 ER PT J AU Marti, L Fornaciari, S Renna, L Stefano, G Brandizzi, F AF Marti, Lucia Fornaciari, Silvia Renna, Luciana Stefano, Giovanni Brandizzi, Federica TI COPII-mediated traffic in plants SO TRENDS IN PLANT SCIENCE LA English DT Review ID RETICULUM EXPORT SITES; DOMINANT-NEGATIVE MUTANT; ENDOPLASMIC-RETICULUM; GOLGI-APPARATUS; EXIT SITES; SECRETORY PATHWAY; SACCHAROMYCES-CEREVISIAE; PROTEIN-TRANSPORT; SAR1 GTPASE; ER EXPORT AB The secretory pathway encloses functionally interlinked organelles for the synthesis and deposition of most of the building blocks of eukaryotic cells, such as lipids, proteins and sugars. The coat protein complex II (COPII) is a specialized protein complex for the transport between secretory organelles, specifically from the endoplasmic reticulum (ER) to the Golgi apparatus. This review focuses on the developments on COPII research in the plant system. Here, we address the most recent advances in the distribution and regulation of ER-to-Golgi protein transport intermediates and functional analyses of COPII isoforms. New studies support that such isoforms might not be functionally redundant and that they might have unanticipated roles in maintaining the integrity of the ER. C1 [Marti, Lucia; Fornaciari, Silvia; Renna, Luciana; Stefano, Giovanni; Brandizzi, Federica] Michigan State Univ, DOE Plant Res Lab, E Lansing, MI 48824 USA. RP Brandizzi, F (reprint author), Univ Modena & Reggio Emilia, Agr & Food Sci Dept, I-42100 Emilia, Italy. EM fb@msu.edu RI STEFANO, GIOVANNI/A-8264-2011; OI STEFANO, GIOVANNI/0000-0002-2744-0052; Renna, Luciana/0000-0001-8738-2408 FU Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, US Department of Energy [DE-FG02-91ER20021]; National Science Foundation [MCB 0948584] FX We apologize to those colleagues whose work we could not cite because of length restrictions. We acknowledge support by the Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, US Department of Energy (award number DE-FG02-91ER20021) and National Science Foundation MCB 0948584 (F.B.). NR 73 TC 31 Z9 32 U1 0 U2 15 PU ELSEVIER SCIENCE LONDON PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 1360-1385 J9 TRENDS PLANT SCI JI Trends Plant Sci. PD SEP PY 2010 VL 15 IS 9 BP 522 EP 528 DI 10.1016/j.tplants.2010.05.010 PG 7 WC Plant Sciences SC Plant Sciences GA 657HE UT WOS:000282403000006 PM 20699200 ER PT J AU Tu, SC Tai, WK Isenburg, M Chang, CC AF Tu, Shih-Chun Tai, Wen-Kai Isenburg, Martin Chang, Chin-Chen TI An improved data hiding approach for polygon meshes SO VISUAL COMPUTER LA English DT Article DE Data hiding; Permutation steganography ID POINT-SAMPLED GEOMETRY; TRIANGLE MESHES; WATERMARKING; STEGANOGRAPHY; MODELS; ALGORITHM AB We present an improved technique for data hiding in polygonal meshes, which is based on the work of Bogomjakov et al. (Comput. Graph. Forum 27(2):637-642, 2008). Like their method, we use an arrangement on primitives relative to a reference ordering to embed a message. But instead of directly interpreting the index of a primitive in the reference ordering as the encoded/decoded bits, our method slightly modifies the mapping so that our modification doubles the chance of encoding an additional bit compared to Bogomjakov et al.'s (Comput. Graph. Forum 27(2):637-642, 2008). We illustrate the inefficiency in the original mapping of Bogomjakov et al. (Comput. Graph. Forum 27(2):637-642, 2008) with an intuitive representation using a binary tree. Although both methods have the same minimal and maximal capacities and are both only one bit per primitive less than optimal, our method improves the average capacity up to 0.63 bits per primitive. Our embedding and extraction algorithms are just as simple to implement and just as efficient, O(n), as those of Bogomjakov et al. (Comput. Graph. Forum 27(2):637-642, 2008). C1 [Tu, Shih-Chun; Tai, Wen-Kai] Natl Dong Hwa Univ, Dept Comp Sci & Informat Engn, Shoufeng 974, Hualien, Taiwan. [Isenburg, Martin] Lawrence Livermore Natl Lab, Livermore, CA USA. [Chang, Chin-Chen] Natl United Univ, Dept Comp Sci & Informat Engn, Kungching Li 360, Miaoli, Taiwan. RP Tai, WK (reprint author), Natl Dong Hwa Univ, Dept Comp Sci & Informat Engn, 1,Sec 2,Da Hsueh Rd, Shoufeng 974, Hualien, Taiwan. EM tusjtu@ms01.dahan.edu.tw; wktai@mail.ndhu.edu.tw; isenburg1@llnl.gov FU National Science Council of Taiwan [NSC 98-2221-E-259025]; U.S. Department of Energy [W-7405-Eng-48] FX This work is in part supported by the National Science Council of Taiwan Under grant number NSC 98-2221-E-259025 and was in part performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract no. W-7405-Eng-48. Moreover, the authors wish to thank reviewers for their useful feedbacks and advices. NR 25 TC 3 Z9 3 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0178-2789 J9 VISUAL COMPUT JI Visual Comput. PD SEP PY 2010 VL 26 IS 9 BP 1177 EP 1181 DI 10.1007/s00371-009-0398-1 PG 5 WC Computer Science, Software Engineering SC Computer Science GA 635JD UT WOS:000280650500004 ER PT J AU Gautesen, AK AF Gautesen, A. K. TI A note on the diffraction coefficients for elastodynamic diffraction by sharp edges SO WAVE MOTION LA English DT Article DE Elastodynamic diffraction coefficients; Matrix Wiener-Hopf equations; Dynamic Stress-intensity factors ID STRESS-INTENSITY FACTORS; GEOMETRICAL-THEORY AB The three dimensional elastodynamic problem of diffraction of waves by a semi-infinite crack is reexamined. The application of Fourier transforms leads to a Wiener-Hopf matrix equation for its solution. An improved product factorization of this matrix due to Abrahams [1] is used to obtain relatively simple expressions for the various diffraction coefficients for incidence of plane and Rayleigh waves. This product factorization does not suffer from the technical difficulty of their inverses having a pole in the wrong half of the complex plane of the transform variable - a difficulty which has been encountered in previous works. For plane or Rayleigh wave incidence it is shown that the diffraction coefficients for body waves can be written in terms of the dynamic stress-intensity factors. (C) 2009 Elsevier B.V. All rights reserved. C1 [Gautesen, A. K.] Iowa State Univ, Dept Math, Ames, IA 50011 USA. [Gautesen, A. K.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Gautesen, AK (reprint author), Iowa State Univ, Dept Math, Ames, IA 50011 USA. EM gautesen@ameslab.gov NR 8 TC 5 Z9 5 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-2125 J9 WAVE MOTION JI Wave Motion PD SEP PY 2010 VL 47 IS 5 BP 327 EP 332 DI 10.1016/j.wavemoti.2009.12.001 PG 6 WC Acoustics; Mechanics; Physics, Multidisciplinary SC Acoustics; Mechanics; Physics GA 598ZQ UT WOS:000277879800006 ER PT J AU Wang, YA Liang, SA Cao, AM Thompson, RL Veser, G AF Wang, Yanan Liang, Shuang Cao, Anmin Thompson, Robert L. Veser, Goetz TI Au-mixed lanthanum/cerium oxide catalysts for water gas shift SO APPLIED CATALYSIS B-ENVIRONMENTAL LA English DT Article DE Water gas shift; Gold; Mixed La/Ce-oxide; Activity; Reducibility ID LOW-TEMPERATURE; OXYGEN VACANCIES; CARBON-MONOXIDE; TOTAL OXIDATION; GOLD CATALYSTS; CO OXIDATION; CERIA; SUPPORT; ZIRCONIA; NANOPARTICLES AB We report on the synthesis of highly homogeneous mixed La/Ce-oxides via a microemulsion-templated approach, and their evaluation as active supports for Au in the water gas shift (WGS) reaction. Both structure and reducibility of the oxides could be tailored by adjusting the La content across the entire range of La:Ce-ratios. The reducibility of the Au-free oxides shows an optimum at similar to 25% La content, which can be traced back to improved oxygen mobility due to formation of oxygen vacancies and to the formation of more strongly bound oxygen upon La addition. Deposition of Au onto these oxides gives rise to an additional, low-temperature reduction peak, presumably due to hydrogen spill-over from the noble metal onto the oxide support. The WGS activity of Au/La(x)Ce(1-x)O(2-0.5x) catalysts correlates closely with the reducibility of the oxide supports, and hence with La content, demonstrating that carefully controlled synthesis of nanostructured catalysts with uniform, tailored composition allows for fine control of reactive properties of these materials, and might ultimately open the way towards a more rational design of catalysts. (C) 2010 Elsevier B.V. All rights reserved. C1 [Wang, Yanan; Liang, Shuang; Cao, Anmin; Veser, Goetz] Univ Pittsburgh, Dept Chem Engn, Swanson Sch Engn, Pittsburgh, PA 15261 USA. [Wang, Yanan; Liang, Shuang; Cao, Anmin; Thompson, Robert L.; Veser, Goetz] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15263 USA. [Thompson, Robert L.] Parsons, South Pk, WA 15129, Australia. RP Veser, G (reprint author), Univ Pittsburgh, Dept Chem Engn, Swanson Sch Engn, 1249 Benedum Hall, Pittsburgh, PA 15261 USA. EM gveser@pitt.edu RI Veser, Goetz/I-5727-2013 FU National Energy Technology Laboratory's under RDS [DE-AC26-04NT41817]; Department of Energy - Basic Energy Science [DE-FG02-05ER46233]; National Science Foundation [CTS-0553365]; University of Pittsburgh's Swanson School of Engineering FX This work was supported by the National Energy Technology Laboratory's on-going research under the RDS Contract DE-AC26-04NT41817, by the Department of Energy - Basic Energy Science through Grant DE-FG02-05ER46233, and by the National Science Foundation through Grant CTS-0553365. G.V. gratefully acknowledges a CNG faculty fellowship of the University of Pittsburgh's Swanson School of Engineering. NR 42 TC 25 Z9 26 U1 2 U2 33 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-3373 J9 APPL CATAL B-ENVIRON JI Appl. Catal. B-Environ. PD AUG 31 PY 2010 VL 99 IS 1-2 BP 89 EP 95 DI 10.1016/j.apcatb.2010.06.004 PG 7 WC Chemistry, Physical; Engineering, Environmental; Engineering, Chemical SC Chemistry; Engineering GA 651HA UT WOS:000281917200008 ER PT J AU King, DL Zhang, LA Xia, G Karim, AM Heldebrant, DJ Wang, XQ Peterson, T Wang, Y AF King, David L. Zhang, Liang Xia, Gordon Karim, Ayman M. Heldebrant, David J. Wang, Xianqin Peterson, Tom Wang, Yong TI Aqueous phase reforming of glycerol for hydrogen production over Pt-Re supported on carbon SO APPLIED CATALYSIS B-ENVIRONMENTAL LA English DT Article DE Glycerol; Aqueous phase reforming; APR; Hydrogen production; Platinum-rhenium catalyst; KOH base addition; Reaction pathway ID GAS-SHIFT REACTION; PLATINUM-RHENIUM CATALYSTS; ION-EXCHANGE-RESIN; ETHYLENE-GLYCOL; SELECTIVE HYDROGENOLYSIS; PROPYLENE-GLYCOL; OXIDE CATALYSTS; METAL-CATALYSTS; WATER; CONVERSION AB Hydrogen production from the aqueous phase reforming of glycerol over 3%Pt-Re/C (1 and 3% Re) has been studied in the absence and presence of base, and the results compared with a Re-free 3%Pt/C catalyst. Although the Pt/C catalyst is very selective toward the production of hydrogen, catalytic activity is low. Addition of Re significantly increases the conversion of glycerol, at some loss of hydrogen selectivity to light hydrocarbons and water-soluble oxygenates. Addition of 1%KOH to the feedstock results in a small increase in glycerol conversion with 3%Pt-3%Re/C, an increase in the gas phase product selectivity in terms of H(2)/CO(2) ratio, and an increase in production of aqueous phase oxygenates. A modest increase in hydrogen gas phase selectivity with base addition with 3%Pt-3%Re/C arises primarily from reducing the selectivity toward C(2)(+) alkanes. products that consume H(2). In comparison, KOH addition to the glycerol feed with the Re-free 3%Pt/C catalyst provides an increase in glycerol conversion but results in a decline in both H(2) and alkane selectivity relative to aqueous phase oxygenates. The highest hydrogen productivity among the catalysts tested is achieved with a 3%Pt-3%Re/C catalyst with added KOH base. The observed product distributions can be understood in terms of the different reaction pathways that become emphasized depending on catalyst composition and pH. (C) 2010 Elsevier B.V. All rights reserved. C1 [King, David L.; Zhang, Liang; Xia, Gordon; Karim, Ayman M.; Heldebrant, David J.; Wang, Xianqin; Peterson, Tom; Wang, Yong] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA. [Wang, Yong] Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA. RP King, DL (reprint author), Pacific NW Natl Lab, Inst Interfacial Catalysis, 99 Battelle Blvd, Richland, WA 99352 USA. EM david.king@pnl.gov; yongwang@pnl.gov RI Wang, Yong/C-2344-2013; Karim, Ayman/G-6176-2012 OI Karim, Ayman/0000-0001-7449-542X NR 37 TC 102 Z9 104 U1 6 U2 86 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-3373 J9 APPL CATAL B-ENVIRON JI Appl. Catal. B-Environ. PD AUG 31 PY 2010 VL 99 IS 1-2 BP 206 EP 213 DI 10.1016/j.apcatb.2010.06.021 PG 8 WC Chemistry, Physical; Engineering, Environmental; Engineering, Chemical SC Chemistry; Engineering GA 651HA UT WOS:000281917200022 ER PT J AU Wielopolski, L Yanai, RD Levine, CR Mitra, S Vadeboncoeur, MA AF Wielopolski, Lucian Yanai, Ruth D. Levine, Carrie R. Mitra, Sudeep Vadeboncoeur, Matthew A. TI Rapid, non-destructive carbon analysis of forest soils using neutron-induced gamma-ray spectroscopy SO FOREST ECOLOGY AND MANAGEMENT LA English DT Article DE Forest; Carbon; Soil analysis; Non-destructive; Neutrons; Gamma-rays ID DIFFUSE-REFLECTANCE SPECTROSCOPY; BIOMASS; STANDS AB Forest soils are pivotal to understanding global carbon (C) cycling and evaluating policies for mitigating global change. However, they are very difficult to monitor because of the heterogeneity of soil characteristics, the difficulty of representative sampling, and the slow time scale of response to environmental change. Here we demonstrate that use of gamma-ray spectroscopy facilitates in situ non-destructive analysis of C and other elements in forest soils. In this approach the element-specific gamma-rays are induced by fast and thermal neutrons interacting with the nuclei of the elements present in the soil. Background gamma-rays emanating from naturally occurring radionuclides in the forest are recorded as well. We applied this approach in a mature northern hardwood forest on glacial till soils at the Bartlett Experimental Forest in New Hampshire, USA. The inelastic neutron scattering (INS) system yielded strong signals in gamma-ray counts/h, from C and other elements present in the soil matrix that included silicon, oxygen, hydrogen, iron, aluminum, manganese and potassium. The INS sensitivity for carbon was 20.656 counts h(-1) kg(-1) C m(-2) based on current net C gamma-ray counts and the data for the O horizon and mineral soil to a depth of 30 cm obtained from a nearby quantitative soil pit (7.35 kg C m(-2)). We estimate the minimum detectable change to be similar to 0.34 kg C m(-2), which is similar to 5% of the current soil C content, and the minimum detectable limit to be similar to 0.23 kg C m(-2). Eight % reproducibility from 11 measurements was limited, in part, by the large variability in the system counting geometry due to the uneven forest microtopography. The INS approach has the potential to revolutionize belowground monitoring of C and other elements, because the possibility of detecting a 5% change in forest soils has not been possible with destructive sampling methods. Published by Elsevier RV. C1 [Wielopolski, Lucian; Mitra, Sudeep] Brookhaven Natl Lab, Dept Environm Sci, Upton, NY 11973 USA. [Yanai, Ruth D.; Levine, Carrie R.] SUNY Coll Environm Sci & Forestry, Syracuse, NY 13210 USA. [Vadeboncoeur, Matthew A.] Univ New Hampshire, Complex Syst Res Ctr, Durham, NH 03824 USA. RP Wielopolski, L (reprint author), Brookhaven Natl Lab, Dept Environm Sci, Bldg 490D, Upton, NY 11973 USA. EM lwielo@bnl.gov; rdyanai@syr.edu; crlev01@syr.edu; matvad@unh.edu OI Vadeboncoeur, Matthew/0000-0002-8269-0708 FU U.S. Department of Energy [DE-AC02-98CH10886]; USDA Forest Service through the Northeastern States Research Cooperative; SUNY College of Environmental Science and Forestry FX Special thanks are due to Dr. John C. Brissette for his encouragement and assistance in carrying out the experiments at the Bartlett Experimental Forest. Silicon and carbon contents of the soil pit were provided by Joel Blum and Steve Hamburg. Support was provided by the U.S. Department of Energy, under Contract No. DE-AC02-98CH10886, the USDA Forest Service through the Northeastern States Research Cooperative, and the SUNY College of Environmental Science and Forestry. NR 32 TC 7 Z9 7 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-1127 J9 FOREST ECOL MANAG JI For. Ecol. Manage. PD AUG 31 PY 2010 VL 260 IS 7 BP 1132 EP 1137 DI 10.1016/j.foreco.2010.06.039 PG 6 WC Forestry SC Forestry GA 652VX UT WOS:000282040000005 ER PT J AU Hsiung, LL Fluss, MJ Kimura, A AF Hsiung, Luke L. Fluss, Michael J. Kimura, Akihiko TI Structure of oxide nanoparticles in Fe-16Cr MA/ODS ferritic steel SO MATERIALS LETTERS LA English DT Article DE Mechanical alloying; Nanostructure; Crystallization; High-resolution electron microscopy ID DISPERSION; PARTICLES; BEHAVIOR; POWDER; DEFORMATION AB Oxide nanoparticles in Fe-16Cr ODS ferritic steel fabricated by mechanical alloying (MA) method have been examined using high-resolution transmission electron microscopy (HRTEM) techniques. A partial crystallization of oxide nanoparticles was frequently observed in as-fabricated ODS steel. The crystal structure of crystalline oxide particles is identified to be mainly Y(4)Al(2)O(9) (YAM) with a monoclinic structure. Large nanoparticles with a diameter larger than 20 nm tend to be incoherent and have a nearly spherical shape, whereas small nanoparticles with a diameter smaller than 10 nm tend to be coherent or semi-coherent and have faceted boundaries. The oxide nanoparticles become fully crystallized after prolonged annealing at 900 degrees C. These results lead us to propose a three-stage formation mechanism of oxide nanoparticles in MA/ODS steels. (C) 2010 Elsevier B.V. All rights reserved. C1 [Hsiung, Luke L.; Fluss, Michael J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Kimura, Akihiko] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan. RP Hsiung, LL (reprint author), Lawrence Livermore Natl Lab, L-352,POB 808, Livermore, CA 94550 USA. EM hsiung1@llnl.gov FU U.S. Department of Energy [DE-AC52-07NA27344]; LLNL [09-SI-003] FX This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Work at LLNL was funded by the Laboratory Directed Research and Development Program at LLNL under project tracking code 09-SI-003. The authors gratefully acknowledge Mark A. Wall for his TEM analysis of nanoparticle size distributions, and Nick E. Teslich and Rick J. Gross for TEM sample preparations. NR 14 TC 31 Z9 32 U1 3 U2 29 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-577X J9 MATER LETT JI Mater. Lett. PD AUG 31 PY 2010 VL 64 IS 16 BP 1782 EP 1785 DI 10.1016/j.matlet.2010.05.039 PG 4 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 632AA UT WOS:000280390900008 ER PT J AU Liu, WC Radhakrishnan, B AF Liu, W. C. Radhakrishnan, B. TI Recrystallization behavior of a supersaturated Al-Mn alloy SO MATERIALS LETTERS LA English DT Article DE Metals and alloys; Deformation; Microstructure; Recrystallization; Concurrent precipitation ID AA-5182 ALUMINUM-ALLOYS; CONTINUOUS-CAST AA5052; COLD-ROLLED DC; TEXTURE EVOLUTION; DIRECT-CHILL; PRECIPITATION AB The effect of concurrent precipitation on recrystallization behavior during the isothermal annealing of a supersaturated and deformed Al-Mn alloy was investigated. It is found that concurrent precipitation strongly affects the recrystallization behavior of this alloy. At low temperatures, concurrent precipitation retards recrystallization and results in large flat grains. The size of recrystallized grains decreases significantly with increasing temperature. The kinetics of recrystallization was determined by measurements of hardness. The JMAK exponent decreases from 3.0 to 0.8 as the annealing temperature increases from 371 degrees C to 427 degrees C. The activation energy for recrystallization of the alloy is about 456 kJ/mol. Concurrent precipitation enhances the activation energy for recrystallization of aluminum alloys. (C) 2010 Elsevier B.V. All rights reserved. C1 [Liu, W. C.] Yanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China. [Radhakrishnan, B.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Liu, WC (reprint author), Yanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China. EM wcliu@ysu.edu.cn FU National Natural Science Foundation of China [50874097] FX This work was supported by the National Natural Science Foundation of China (Grant No. 50874097). NR 16 TC 15 Z9 19 U1 2 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-577X J9 MATER LETT JI Mater. Lett. PD AUG 31 PY 2010 VL 64 IS 16 BP 1829 EP 1832 DI 10.1016/j.matlet.2010.05.046 PG 4 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 632AA UT WOS:000280390900021 ER PT J AU Do, GS Kim, J Jhi, SH Park, CH Louie, SG Cohen, ML AF Do, Gap-Seok Kim, Jinwoong Jhi, Seung-Hoon Park, Cheol-Hwan Louie, Steven G. Cohen, Marvin L. TI Ab initio calculations of pressure-induced structural phase transitions of GeTe SO PHYSICAL REVIEW B LA English DT Article ID OPTICAL-PROPERTIES; SEMICONDUCTORS; ZNSE; ZNTE AB Structural phase transitions of GeTe are studied with the use of the ab initio pseudopotential density-functional method. Transition pathways and pressures for NaCl-to-CsCl structures are investigated considering three different paths, namely, the Watanabe, Toledano, and modified Buerger pathways. Structural and electronic properties of the phases are also studied near the transition pressures. Our calculations show that GeTe exhibits very complex transition behaviors at intermediate pressures around 20 GPa, implying the existence of mixed phases in this pressure range. It is found that the Te 4d orbitals require careful treatment to properly describe the structural and electronic properties of GeTe. C1 [Do, Gap-Seok; Kim, Jinwoong; Jhi, Seung-Hoon] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea. [Jhi, Seung-Hoon] Pohang Univ Sci & Technol, Div Adv Mat Sci, Pohang 790784, South Korea. [Park, Cheol-Hwan; Louie, Steven G.; Cohen, Marvin L.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Park, Cheol-Hwan; Louie, Steven G.; Cohen, Marvin L.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Do, GS (reprint author), Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea. EM jhish@postech.ac.kr RI Park, Cheol-Hwan/A-1543-2009 OI Park, Cheol-Hwan/0000-0003-1584-6896 FU Ministry of Education, Science and Technology [R31-2008-000-10059-0]; NSF [DMR04-39768]; Director, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering Division, U. S. Department of Energy [DE-AC02-05CH11231]; KISTI FX This research was supported by the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology through WCU Program No. R31-2008-000-10059-0, NSF under Grant No. DMR04-39768 and by the Director, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering Division, U. S. Department of Energy under Contract No. DE-AC02-05CH11231. S.H.J. acknowledge the support from KISTI under the Tenth Strategic Supercomputing Applications Support Program. NR 28 TC 12 Z9 12 U1 1 U2 19 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 31 PY 2010 VL 82 IS 5 AR 054121 DI 10.1103/PhysRevB.82.054121 PG 5 WC Physics, Condensed Matter SC Physics GA 644UA UT WOS:000281405600003 ER PT J AU Kim, H Gordon, RT Tanatar, MA Hua, J Welp, U Kwok, WK Ni, N Bud'ko, SL Canfield, PC Vorontsov, AB Prozorov, R AF Kim, H. Gordon, R. T. Tanatar, M. A. Hua, J. Welp, U. Kwok, W. K. Ni, N. Bud'ko, S. L. Canfield, P. C. Vorontsov, A. B. Prozorov, R. TI London penetration depth in Ba(Fe1-xTx)(2)As-2 (T=Co, Ni) superconductors irradiated with heavy ions SO PHYSICAL REVIEW B LA English DT Article ID IRON-BASED SUPERCONDUCTORS; PAIRING SYMMETRY; STATE AB Irradiation with Pb ions was used to study the effect of disorder on the in-plane London penetration depth, lambda(T), in single crystals of Ba(Fe1-xTx)(2)As-2 (T=Co, Ni). An increase in the irradiation dose results in a monotonic decrease in the superconducting transition temperature, T-c, without affecting much the transition width. In both Co- and Ni-doped systems we find a power-law behavior, Delta lambda(T)proportional to T-n with the exponent n systematically decreasing with the increase in disorder. This observation, at qualitative odds with the response of s- and d-wave superconductors, finds natural explanation in a nodeless s(+/-) state with pairbreaking (interband) impurity scattering. We are able to describe the effect quantitatively assuming the pairbreaking strength intermediate between Born and unitary limits. C1 [Kim, H.; Gordon, R. T.; Tanatar, M. A.; Ni, N.; Bud'ko, S. L.; Canfield, P. C.; Prozorov, R.] Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. [Kim, H.; Gordon, R. T.; Tanatar, M. A.; Ni, N.; Bud'ko, S. L.; Canfield, P. C.; Prozorov, R.] Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA. [Hua, J.; Welp, U.; Kwok, W. K.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Vorontsov, A. B.] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA. RP Prozorov, R (reprint author), Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. EM prozorov@ameslab.gov RI Prozorov, Ruslan/A-2487-2008; Canfield, Paul/H-2698-2014 OI Prozorov, Ruslan/0000-0002-8088-6096; FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering (Ames National Laboratory) [DE-AC02-07CH11358]; U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering (Argonne National Laboratory) [DE-AC02-06CH11357]; Alfred P. Sloan Foundation FX We thank V. Kogan, J. Schmalian, A. Chubukov, I. Mazin, P. Hirschfeld, and A. Koshelev for useful discussions. This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Contract No. DE-AC02-07CH11358 (Ames National Laboratory) and Contract No. DE-AC02-06CH11357 (Argonne National Laboratory). The heavy-ion irradiation was performed at the ATLAS facility at Argonne. R. P. acknowledges support from the Alfred P. Sloan Foundation. NR 48 TC 43 Z9 43 U1 1 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 31 PY 2010 VL 82 IS 6 AR 060518 DI 10.1103/PhysRevB.82.060518 PG 4 WC Physics, Condensed Matter SC Physics GA 644UC UT WOS:000281405800003 ER PT J AU Holian, BL Mareschal, M AF Holian, Brad Lee Mareschal, Michel TI Heat-flow equation motivated by the ideal-gas shock wave SO PHYSICAL REVIEW E LA English DT Article AB We present an equation for the heat-flux vector that goes beyond Fourier's Law of heat conduction, in order to model shockwave propagation in gases. Our approach is motivated by the observation of a disequilibrium among the three components of temperature, namely, the difference between the temperature component in the direction of a planar shock wave, versus those in the transverse directions. This difference is most prominent near the shock front. We test our heat-flow equation for the case of strong shock waves in the ideal gas, which has been studied in the past and compared to Navier-Stokes solutions. The new heat-flow treatment improves the agreement with nonequilibrium molecular-dynamics simulations of hard spheres under strong shockwave conditions. C1 [Holian, Brad Lee] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Mareschal, Michel] Univ Libre Bruxelles, Dept Phys, B-1050 Brussels, Belgium. RP Holian, BL (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 19 TC 9 Z9 9 U1 1 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD AUG 31 PY 2010 VL 82 IS 2 AR 026707 DI 10.1103/PhysRevE.82.026707 PN 2 PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 644UM UT WOS:000281406800002 PM 20866940 ER PT J AU Aaltonen, T Adelman, J Gonzalez, BA Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Barria, P Bartos, P Bauer, G Beauchemin, PH Bedeschi, F Beecher, D Behari, S Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bizjak, I Blair, RE Blocker, C Blumenfeld, B Bocci, A Bodek, A Boisvert, V Bortoletto, D Boudreau, J Boveia, A Brau, B Bridgeman, A Brigliadori, L Bromberg, C Brubaker, E Budagov, J Budd, HS Budd, S Burkett, K Busetto, G Bussey, P Buzatu, A Byrum, KL Cabrera, S Calancha, C Camarda, S Campanelli, M Campbell, M Canelli, F Canepa, A Carls, B Carlsmith, D Carosi, R Carrillo, S Carron, S Casal, B Casarsa, M Castro, A Catastini, P Cauz, D Cavaliere, V Cavalli-Sforza, M Cerri, A Cerrito, L Chang, SH Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Cho, K Chokheli, D Chou, JP Chung, K Chung, WH Chung, YS Chwalek, T Ciobanu, CI Ciocci, MA Clark, A Clark, D Compostella, G Convery, ME Conway, J Corbo, M Cordelli, M Cox, CA Cox, DJ Crescioli, F Almenar, CC Cuevas, J Culbertson, R Cully, JC Dagenhart, D d'Ascenzo, N Datta, M Davies, T de Barbaro, P De Cecco, S Deisher, A De Lorenzo, G Dell'Orso, M Deluca, C Demortier, L Deng, J Deninno, M d'Errico, M Di Canto, A Di Ruzza, B Dittmann, JR D'Onofrio, M Donati, S Dong, P Dorigo, T Dube, S Ebina, K Elagin, A Erbacher, R Errede, D Errede, S Ershaidat, N Eusebi, R Fang, HC Farrington, S Fedorko, WT Feild, RG Feindt, M Fernandez, JP Ferrazza, C Field, R Flanagan, G Forrest, R Frank, MJ Franklin, M Freeman, JC Furic, I Gallinaro, M Galyardt, J Garberson, F Garcia, JE Garfinkel, AF Garosi, P Gerberich, H Gerdes, D Gessler, A Giagu, S Giakoumopoulou, V Giannetti, P Gibson, K Gimmell, JL Ginsburg, CM Giokaris, N Giordani, M Giromini, P Giunta, M Giurgiu, G Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Golossanov, A Gomez, G Gomez-Ceballos, G Goncharov, M Gonzalez, O Gorelov, I Goshaw, AT Goulianos, K Gresele, A Grinstein, S Grosso-Pilcher, C Group, RC Grundler, U da Costa, JG Gunay-Unalan, Z Haber, C Hahn, SR Halkiadakis, E Han, BY Han, JY Happacher, F Hara, K Hare, D Hare, M Harr, RF Hartz, M Hatakeyama, K Hays, C Heck, M Heinrich, J Herndon, M Heuser, J Hewamanage, S Hidas, D Hill, CS Hirschbuehl, D Hocker, A Hou, S Houlden, M Hsu, SC Hughes, RE Hurwitz, M Husemann, U Hussein, M Huston, J Incandela, J Introzzi, G Iori, M Ivanov, A James, E Jang, D Jayatilaka, B Jeon, EJ Jha, MK Jindariani, S Johnson, W Jones, M Joo, KK Jun, SY Jung, JE Junk, TR Kamon, T Kar, D Karchin, PE Kato, Y Kephart, R Ketchum, W Keung, J Kietzman, B Khotilovich, V Kilminster, B Kim, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kimura, N Kirsch, L Klimenko, S Kondo, K Kong, DJ Konigsberg, J Korytov, A Kotwal, AV Kreps, M Kroll, J Krop, D Krumnack, N Kruse, M Krutelyov, V Kuhr, T Kulkarni, NP Kurata, M Kwang, S Laasanen, AT Lami, S Lammel, S Lancaster, M Lander, RL Lannon, K Lath, A Latino, G Lazzizzera, I LeCompte, T Lee, E Lee, HS Lee, JS Lee, SW Leone, S Lewis, JD Lin, CJ Linacre, J Lindgren, M Lipeles, E Lister, A Litvintsev, DO Liu, C Liu, T Lockyer, NS Loginov, A Lovas, L Lucchesi, D Lueck, J Lujan, P Lukens, P Lungu, G Lys, J Lysak, R MacQueen, D Madrak, R Maeshima, K Makhoul, K Maksimovic, P Malde, S Malik, S Manca, G Manousakis-Katsikakis, A Margaroli, F Marino, C Marino, CP Martin, A Martin, V Martinez, M Martinez-Ballarin, R Mastrandrea, P Mathis, M Mattson, ME Mazzanti, P McFarland, KS McIntyre, P McNulty, R Mehta, A Mehtala, P Menzione, A Mesropian, C Miao, T Mietlicki, D Miladinovic, N Miller, R Mills, C Milnik, M Mitra, A Mitselmakher, G Miyake, H Moed, S Moggi, N Mondragon, MN Moon, CS Moore, R Morello, MJ Morlock, J Fernandez, PM Mulmenstadt, J Mukherjee, A Muller, T Murat, P Mussini, M Nachtman, J Nagai, Y Naganoma, J Nakamura, K Nakano, I Napier, A Nett, J Neu, C Neubauer, MS Neubauer, S Nielsen, J Nodulman, L Norman, M Norniella, O Nurse, E Oakes, L Oh, SH Oh, YD Oksuzian, I Okusawa, T Orava, R Osterberg, K Griso, SP Pagliarone, C Palencia, E Papadimitriou, V Papaikonomou, A Paramanov, AA Parks, B Pashapour, S Patrick, J Pauletta, G Paulini, M Paus, C Peiffer, T Pellett, DE Penzo, A Phillips, TJ Piacentino, G Pianori, E Pinera, L Pitts, K Plager, C Pondrom, L Potamianos, K Poukhov, O Prokoshin, F Pronko, A Ptohos, F Pueschel, E Punzi, G Pursley, J Rademacker, J Rahaman, A Ramakrishnan, V Ranjan, N Redondo, I Renton, P Renz, M Rescigno, M Richter, S Rimondi, F Ristori, L Robson, A Rodrigo, T Rodriguez, T Rogers, E Rolli, S Roser, R Rossi, M Rossin, R Roy, P Ruiz, A Russ, J Rusu, V Rutherford, B Saarikko, H Safonov, A Sakumoto, WK Santi, L Sartori, L Sato, K Saveliev, V Savoy-Navarro, A Schlabach, P Schmidt, A Schmidt, EE Schmidt, MA Schmidt, MP Schmitt, M Schwarz, T Scodellaro, L Scribano, A Scuri, F Sedov, A Seidel, S Seiya, Y Semenov, A Sexton-Kennedy, L Sforza, F Sfyrla, A Shalhout, SZ Shears, T Shepard, PF Shimojima, M Shiraishi, S Shochet, M Shon, Y Shreyber, I Simonenko, A Sinervo, P Sisakyan, A Slaughter, AJ Slaunwhite, J Sliwa, K Smith, JR Snider, FD Snihur, R Soha, A Somalwar, S Sorin, V Squillacioti, P Stanitzki, M St Denis, R Stelzer, B Stelzer-Chilton, O Stentz, D Strologas, J Strycker, GL Suh, JS Sukhanov, A Suslov, I Taffard, A Takashima, R Takeuchi, Y Tanaka, R Tang, J Tecchio, M Teng, PK Thom, J Thome, J Thompson, GA Thomson, E Tipton, P Ttito-Guzman, P Tkaczyk, S Toback, D Tokar, S Tollefson, K Tomura, T Tonelli, D Torre, S Torretta, D Totaro, P Trovato, M Tsai, SY Tu, Y Turini, N Ukegawa, F Uozumi, S van Remortel, N Varganov, A Vataga, E Vazquez, F Velev, G Vellidis, C Vidal, M Vila, I Vilar, R Vogel, M Volobouev, I Volpi, G Wagner, P Wagner, RG Wagner, RL Wagner, W Wagner-Kuhr, J Wakisaka, T Wallny, R Wang, SM Warburton, A Waters, D Weinberger, M Weinelt, J Wester, WC Whitehouse, B Whiteson, D Wicklund, AB Wicklund, E Wilbur, S Williams, G Williams, HH Wilson, P Winer, BL Wittich, P Wolbers, S Wolfe, C Wolfe, H Wright, T Wu, X Wurthwein, F Yagil, A Yamamoto, K Yamaoka, J Yang, UK Yang, YC Yao, WM Yeh, GP Yi, K Yoh, J Yorita, K Yoshida, T Yu, GB Yu, I Yu, SS Yun, JC Zanetti, A Zeng, Y Zhang, X Zheng, Y Zucchelli, S AF Aaltonen, T. Adelman, J. Gonzalez, B. Alvarez Amerio, S. Amidei, D. Anastassov, A. Annovi, A. Antos, J. Apollinari, G. Appel, J. Apresyan, A. Arisawa, T. Artikov, A. Asaadi, J. Ashmanskas, W. Attal, A. Aurisano, A. Azfar, F. Badgett, W. Barbaro-Galtieri, A. Barnes, V. E. Barnett, B. A. Barria, P. Bartos, P. Bauer, G. Beauchemin, P. -H. Bedeschi, F. Beecher, D. Behari, S. Bellettini, G. Bellinger, J. Benjamin, D. Beretvas, A. Bhatti, A. Binkley, M. Bisello, D. Bizjak, I. Blair, R. E. Blocker, C. Blumenfeld, B. Bocci, A. Bodek, A. Boisvert, V. Bortoletto, D. Boudreau, J. Boveia, A. Brau, B. Bridgeman, A. Brigliadori, L. Bromberg, C. Brubaker, E. Budagov, J. Budd, H. S. Budd, S. Burkett, K. Busetto, G. Bussey, P. Buzatu, A. Byrum, K. L. Cabrera, S. Calancha, C. Camarda, S. Campanelli, M. Campbell, M. Canelli, F. Canepa, A. Carls, B. Carlsmith, D. Carosi, R. Carrillo, S. Carron, S. Casal, B. Casarsa, M. Castro, A. Catastini, P. Cauz, D. Cavaliere, V. Cavalli-Sforza, M. Cerri, A. Cerrito, L. Chang, S. H. Chen, Y. C. Chertok, M. Chiarelli, G. Chlachidze, G. Chlebana, F. Cho, K. Chokheli, D. Chou, J. P. Chung, K. Chung, W. H. Chung, Y. S. Chwalek, T. Ciobanu, C. I. Ciocci, M. A. Clark, A. Clark, D. Compostella, G. Convery, M. E. Conway, J. Corbo, M. Cordelli, M. Cox, C. A. Cox, D. J. Crescioli, F. Almenar, C. Cuenca Cuevas, J. Culbertson, R. Cully, J. C. Dagenhart, D. d'Ascenzo, N. Datta, M. Davies, T. de Barbaro, P. De Cecco, S. Deisher, A. De Lorenzo, G. Dell'Orso, M. Deluca, C. Demortier, L. Deng, J. Deninno, M. d'Errico, M. Di Canto, A. Di Ruzza, B. Dittmann, J. R. D'Onofrio, M. Donati, S. Dong, P. Dorigo, T. Dube, S. Ebina, K. Elagin, A. Erbacher, R. Errede, D. Errede, S. Ershaidat, N. Eusebi, R. Fang, H. C. Farrington, S. Fedorko, W. T. Feild, R. G. Feindt, M. Fernandez, J. P. Ferrazza, C. Field, R. Flanagan, G. Forrest, R. Frank, M. J. Franklin, M. Freeman, J. C. Furic, I. Gallinaro, M. Galyardt, J. Garberson, F. Garcia, J. E. Garfinkel, A. F. Garosi, P. Gerberich, H. Gerdes, D. Gessler, A. Giagu, S. Giakoumopoulou, V. Giannetti, P. Gibson, K. Gimmell, J. L. Ginsburg, C. M. Giokaris, N. Giordani, M. Giromini, P. Giunta, M. Giurgiu, G. Glagolev, V. Glenzinski, D. Gold, M. Goldschmidt, N. Golossanov, A. Gomez, G. Gomez-Ceballos, G. Goncharov, M. Gonzalez, O. Gorelov, I. Goshaw, A. T. Goulianos, K. Gresele, A. Grinstein, S. Grosso-Pilcher, C. Group, R. C. Grundler, U. da Costa, J. Guimaraes Gunay-Unalan, Z. Haber, C. Hahn, S. R. Halkiadakis, E. Han, B. -Y. Han, J. Y. Happacher, F. Hara, K. Hare, D. Hare, M. Harr, R. F. Hartz, M. Hatakeyama, K. Hays, C. Heck, M. Heinrich, J. Herndon, M. Heuser, J. Hewamanage, S. Hidas, D. Hill, C. S. Hirschbuehl, D. Hocker, A. Hou, S. Houlden, M. Hsu, S. -C. Hughes, R. E. Hurwitz, M. Husemann, U. Hussein, M. Huston, J. Incandela, J. Introzzi, G. Iori, M. Ivanov, A. James, E. Jang, D. Jayatilaka, B. Jeon, E. J. Jha, M. K. Jindariani, S. Johnson, W. Jones, M. Joo, K. K. Jun, S. Y. Jung, J. E. Junk, T. R. Kamon, T. 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Stelzer, B. Stelzer-Chilton, O. Stentz, D. Strologas, J. Strycker, G. L. Suh, J. S. Sukhanov, A. Suslov, I. Taffard, A. Takashima, R. Takeuchi, Y. Tanaka, R. Tang, J. Tecchio, M. Teng, P. K. Thom, J. Thome, J. Thompson, G. A. Thomson, E. Tipton, P. Ttito-Guzman, P. Tkaczyk, S. Toback, D. Tokar, S. Tollefson, K. Tomura, T. Tonelli, D. Torre, S. Torretta, D. Totaro, P. Trovato, M. Tsai, S. -Y. Tu, Y. Turini, N. Ukegawa, F. Uozumi, S. van Remortel, N. Varganov, A. Vataga, E. Vazquez, F. Velev, G. Vellidis, C. Vidal, M. Vila, I. Vilar, R. Vogel, M. Volobouev, I. Volpi, G. Wagner, P. Wagner, R. G. Wagner, R. L. Wagner, W. Wagner-Kuhr, J. Wakisaka, T. Wallny, R. Wang, S. M. Warburton, A. Waters, D. Weinberger, M. Weinelt, J. Wester, W. C., III Whitehouse, B. Whiteson, D. Wicklund, A. B. Wicklund, E. Wilbur, S. Williams, G. Williams, H. H. Wilson, P. Winer, B. L. Wittich, P. Wolbers, S. Wolfe, C. Wolfe, H. Wright, T. Wu, X. Wuerthwein, F. Yagil, A. Yamamoto, K. Yamaoka, J. Yang, U. K. Yang, Y. C. Yao, W. M. Yeh, G. P. Yi, K. Yoh, J. Yorita, K. Yoshida, T. Yu, G. B. Yu, I. Yu, S. S. Yun, J. C. Zanetti, A. Zeng, Y. Zhang, X. Zheng, Y. Zucchelli, S. CA CDF Collaboration TI Exclusion of an Exotic Top Quark with-4/3 Electric Charge Using Soft Lepton Tagging SO PHYSICAL REVIEW LETTERS LA English DT Article ID COLLIDER DETECTOR; CDF; CALORIMETER; PERFORMANCE; COLLISIONS; FERMILAB AB We present a measurement of the electric charge of the top quark using p (p) over bar collisions corresponding to an integrated luminosity of 2: 7 fb(-1) at the CDF II detector. We reconstruct t (t) over bar events in the lepton + jets final state. We use soft lepton taggers to determine the flavor of the b jets, which we use to reconstruct the top quark's electric charge and exclude an exotic top quark with -4/3 charge at 95% confidence level. This is the strongest exclusion of the exotic charge scenario and the first to use soft leptons for this purpose. 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J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy. [Barria, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Di Ruzza, B.; Donati, S.; Ferrazza, C.; Garosi, P.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy. [Barria, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Di Ruzza, B.; Donati, S.; Ferrazza, C.; Garosi, P.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Univ Siena, I-56127 Pisa, Italy. [Barria, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Di Ruzza, B.; Donati, S.; Ferrazza, C.; Garosi, P.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Scuola Normale Super Pisa, I-56127 Pisa, Italy. [Boudreau, J.; Gibson, K.; Hartz, M.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA. [Apresyan, A.; Barnes, V. E.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Margaroli, F.; Potamianos, K.; Ranjan, N.; Sedov, A.] Purdue Univ, W Lafayette, IN 47907 USA. [Bodek, A.; Boisvert, V.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Gimmell, J. L.; Han, B. -Y.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.] Univ Rochester, Rochester, NY 14627 USA. [Bhatti, A.; Demortier, L.; Gallinaro, M.; Goulianos, K.; Lungu, G.; Mesropian, C.] Rockefeller Univ, New York, NY 10021 USA. [De Cecco, S.; Giagu, S.; Iori, M.; Mastrandrea, P.; Rescigno, M.] Ist Nazl Fis Nucl, I-00185 Rome, Italy. [De Cecco, S.; Giagu, S.; Iori, M.; Mastrandrea, P.; Rescigno, M.] Sapienza Univ Roma, I-00185 Rome, Italy. [Dube, S.; Halkiadakis, E.; Hare, D.; Hidas, D.; Lath, A.; Somalwar, S.] Rutgers State Univ, Piscataway, NJ 08855 USA. [Asaadi, J.; Aurisano, A.; Elagin, A.; Eusebi, R.; Kamon, T.; Khotilovich, V.; Lee, E.; Lee, S. W.; McIntyre, P.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA. [Cauz, D.; Giordani, M.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl, I-34100 Trieste, Italy. [Cauz, D.; Giordani, M.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Santi, L.; Totaro, P.; Zanetti, A.] Univ Trieste, I-33100 Udine, Italy. [Hara, K.; Kim, S. H.; Kurata, M.; Miyake, H.; Nagai, Y.; Naganoma, J.; Nakamura, K.; Sato, K.; Shimojima, M.; Takeuchi, Y.; Tomura, T.; Ukegawa, F.] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. [Hare, M.; Napier, A.; Rolli, S.; Sliwa, K.; Whitehouse, B.] Tufts Univ, Medford, MA 02155 USA. [Arisawa, T.; Ebina, K.; Kimura, N.; Kondo, K.; Yorita, K.] Waseda Univ, Tokyo 169, Japan. [Harr, R. F.; Karchin, P. E.; Kulkarni, N. P.; Mattson, M. E.; Shalhout, S. Z.] Wayne State Univ, Detroit, MI 48201 USA. [Bellinger, J.; Carlsmith, D.; Chung, W. H.; Herndon, M.; Nett, J.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.; Shon, Y.] Univ Wisconsin, Madison, WI 53706 USA. [Almenar, C. Cuenca; Feild, R. G.; Husemann, U.; Loginov, A.; Martin, A.; Schmidt, M. P.; Stanitzki, M.; Tipton, P.] Yale Univ, New Haven, CT 06520 USA. RP Aaltonen, T (reprint author), Univ Helsinki, Div High Energy Phys, Dept Phys, FIN-00014 Helsinki, Finland. RI Muelmenstaedt, Johannes/K-2432-2015; Introzzi, Gianluca/K-2497-2015; Piacentino, Giovanni/K-3269-2015; Martinez Ballarin, Roberto/K-9209-2015; Gorelov, Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012; Canelli, Florencia/O-9693-2016; Moon, Chang-Seong/J-3619-2014; Scodellaro, Luca/K-9091-2014; Grinstein, Sebastian/N-3988-2014; Paulini, Manfred/N-7794-2014; Russ, James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera, Ignazio/E-9678-2015; vilar, rocio/P-8480-2014; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Chiarelli, Giorgio/E-8953-2012; manca, giulia/I-9264-2012; Ruiz, Alberto/E-4473-2011; Warburton, Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Lysak, Roman/H-2995-2014; Robson, Aidan/G-1087-2011; Zeng, Yu/C-1438-2013; Amerio, Silvia/J-4605-2012; De Cecco, Sandro/B-1016-2012; Annovi, Alberto/G-6028-2012; Punzi, Giovanni/J-4947-2012; Ivanov, Andrew/A-7982-2013; St.Denis, Richard/C-8997-2012 OI Gallinaro, Michele/0000-0003-1261-2277; Torre, Stefano/0000-0002-7565-0118; Turini, Nicola/0000-0002-9395-5230; Latino, Giuseppe/0000-0002-4098-3502; iori, maurizio/0000-0002-6349-0380; Vidal Marono, Miguel/0000-0002-2590-5987; Nielsen, Jason/0000-0002-9175-4419; Jun, Soon Yung/0000-0003-3370-6109; Toback, David/0000-0003-3457-4144; Osterberg, Kenneth/0000-0003-4807-0414; Hays, Chris/0000-0003-2371-9723; Farrington, Sinead/0000-0001-5350-9271; Robson, Aidan/0000-0002-1659-8284; Group, Robert/0000-0002-4097-5254; Simonenko, Alexander/0000-0001-6580-3638; Lancaster, Mark/0000-0002-8872-7292; Giordani, Mario/0000-0002-0792-6039; Casarsa, Massimo/0000-0002-1353-8964; Muelmenstaedt, Johannes/0000-0003-1105-6678; Introzzi, Gianluca/0000-0002-1314-2580; Piacentino, Giovanni/0000-0001-9884-2924; Martinez Ballarin, Roberto/0000-0003-0588-6720; Gorelov, Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399; Canelli, Florencia/0000-0001-6361-2117; Lami, Stefano/0000-0001-9492-0147; Margaroli, Fabrizio/0000-0002-3869-0153; Moon, Chang-Seong/0000-0001-8229-7829; Scodellaro, Luca/0000-0002-4974-8330; Grinstein, Sebastian/0000-0002-6460-8694; Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese /0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816; Ruiz, Alberto/0000-0002-3639-0368; Warburton, Andreas/0000-0002-2298-7315; Annovi, Alberto/0000-0002-4649-4398; Punzi, Giovanni/0000-0002-8346-9052; Ivanov, Andrew/0000-0002-9270-5643; FU U.S. Department of Energy; National Science Foundation; Italian Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports, Science and Technology of Japan; Natural Sciences and Engineering Research Council of Canada; National Science Council of the Republic of China; Swiss National Science Foundation; A.P. Sloan Foundation; Bundesministerium fur Bildung und Forschung, Germany; World Class University; National Research Foundation of Korea; Science and Technology Facilities Council; Royal Society, U.K.; Institut National de Physique Nucleaire et Physique des Particules/CNRS; Russian Foundation for Basic Research; Ministerio de Ciencia e Innovacion; Programa Consolider-Ingenio 2010, Spain; Slovak RD Agency; Academy of Finland FX This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A.P. Sloan Foundation; the Bundesministerium fur Bildung und Forschung, Germany; the World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, U.K.; the Institut National de Physique Nucleaire et Physique des Particules/CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and the Academy of Finland. NR 28 TC 20 Z9 20 U1 3 U2 16 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 AUG 31 PY 2010 VL 105 IS 10 AR 101801 DI 10.1103/PhysRevLett.105.101801 PG 7 WC Physics, Multidisciplinary SC Physics GA 644UN UT WOS:000281406900003 ER PT J AU Leonhardt, D Sheng, J Cederberg, JG Li, QM Carroll, MS Han, SM AF Leonhardt, Darin Sheng, Josephine Cederberg, Jeffrey G. Li, Qiming Carroll, Malcolm S. Han, Sang M. TI Nanoscale interfacial engineering to grow Ge on Si as virtual substrates and subsequent integration of GaAs SO THIN SOLID FILMS LA English DT Article DE Silicon; Germanium; Silicon dioxide; Gallium arsenide; Selective epitaxial growth; Nucleation; Chemical polishing; Molecular beam epitaxy; Metal-organic chemical vapor deposition ID CHEMICAL-VAPOR-DEPOSITION; MOLECULAR-BEAM EPITAXY; ULTRATHIN OXIDE LAYERS; THREADING DISLOCATION DENSITIES; SCANNING-TUNNELING-MICROSCOPY; POINT-DEFECT GENERATION; THERMAL-DECOMPOSITION; SOLAR-CELLS; SI(111) SURFACES; ULTRAHIGH-VACUUM AB We have demonstrated the scalability of a process previously dubbed as Ge "touchdown" on Si to substantially reduce threading dislocations below 10(7)/cm(2) in a Ge film grown on a 2 inch-diameter chemically oxidized Si substrate This study also elucidates the overall mechanism of the touchdown process The 1.4 nm thick chemical oxide is first formed by immersing Si substrates in a solution of H(2)O(2) and H(2)SO(4) Subsequent exposure to Ge flux creates 3 to 7 nm-diameter voids in the oxide at a density greater than 10(11)/cm(2). Comparison of data taken from many previous studies and ours shows an exponential dependence between oxide thickness and inverse temperature of void formation Additionally, exposure to a Ge or Si atom flux decreases the temperature at which voids begin to form in the oxide These results strongly suggest that Ge actively participates in the reaction with SiO(2) in the void formation process. Once voids are created in the oxide under a Ge flux, Ge islands selectively nucleate within the void openings on the newly exposed Si Island nucleation and growth then compete with the void growth reaction At substrate temperatures between 823 and 1053 K, nanometer size Ge Islands that nucleate within the voids continue to grow and coalesce into a continuous film over the remaining oxide Coalescence of the Ge islands is believed to result in the creation of stacking faults in the Ge film at a density of 5 x 10(7)/cm(2). Additionally, coalescence results in films of 3 mu m thickness having a root-mean-square roughness of 8 to 10 nm. We have found that polishing the films with dilute H(2)O(2) results in roughness values below 0.5 nm However, stacking faults originating at the Ge-SiO(2) interface and terminating at the Ge surface are polished at a slightly reduced rate, and show up as 1 to 2 nm raised lines on the polished Ge surface. These lines are then transferred into the subsequent growth morphology of GaAs deposited by metal-organic chemical vapor deposition. Room temperature photoluminescence shows that films of GaAs grown on Ge-on-oxidized Si have an intensity that is 20 to 25% compared to the intensity from GaAs grown on commercial Ge or GaAs substrates Cathodoluminescence shows that nonradiative defects occur in the GaAs that spatially correspond to the stacking faults terminating at the Ge surface. The exact nature of these nonradiative defects in the GaAs is unknown, however, GaAs grown on annealed samples of Ge-on-oxidized Si. whereby annealing removes the stacking faults, have photoluminescence intensity that is comparable to GaAs grown on a GaAs substrate (C) 2010 Elsevier B.V All rights reserved C1 [Leonhardt, Darin; Han, Sang M.] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. [Sheng, Josephine; Cederberg, Jeffrey G.; Li, Qiming; Carroll, Malcolm S.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Han, SM (reprint author), Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. FU National Science Foundation [DMR-0907112]; Air Force Research Laboratory Space Vehicle Directorate [FA9453-06-C-0211] FX The above material is based upon work supported by, or in part by, the National Science Foundation (DMR-0907112). The authors also thank the Air Force Research Laboratory Space Vehicle Directorate (FA9453-06-C-0211) for their generous financial support, and the NMTRC. NR 95 TC 11 Z9 11 U1 0 U2 23 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 AUG 31 PY 2010 VL 518 IS 21 BP 5920 EP 5927 DI 10.1016/j.tsf.2010.05.085 PG 8 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA 639QK UT WOS:000280989100009 ER PT J AU Krishnan, VB Shmalo, SB Rathod, CR Bourke, MAM Vaidyanathan, R AF Krishnan, V. B. Shmalo, S. B. Rathod, C. R. Bourke, M. A. M. Vaidyanathan, R. TI Low temperature deformation of the R-phase in a NiTiFe shape memory alloy SO APPLIED PHYSICS LETTERS LA English DT Article ID ACQUIRED IN-SITU; TRANSFORMATIONS AB Deformation in the P3 phase (R-phase) of NiTiFe was investigated by in situ neutron diffraction during compressive loading at cryogenic temperatures. At 216 K, upon loading the R-phase detwinned and subsequently underwent a reversible stress-induced transformation to the B19' phase (martensite). At 92 K on the other hand, detwinning was suppressed and the stress-induced martensite formed did not transform back upon unloading. The experiments also directly observed a hitherto theoretically predicted B33 phase. Rietveld refinement of the neutron diffraction spectra were used to determine lattice parameters of the B33 and R-phases. Plane-specific elastic moduli were also determined for the R-phase. (C) 2010 American Institute of Physics. [doi:10.1063/1.3481694] C1 [Krishnan, V. B.; Shmalo, S. B.; Rathod, C. R.; Vaidyanathan, R.] Univ Cent Florida, Dept Mech Mat & Aerosp Engn, AMPAC, Orlando, FL 32816 USA. [Bourke, M. A. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Krishnan, VB (reprint author), Univ Cent Florida, Dept Mech Mat & Aerosp Engn, AMPAC, Orlando, FL 32816 USA. EM raj@mail.ucf.edu FU NSF [DMR-0239512]; NASA [NAG3-2751]; SRI; Office of Basic Energy Sciences (DOE); DOE [DE-AC52-06NA25396] FX R.V. acknowledges funding from NSF (CAREER under Grant No. DMR-0239512), NASA (Grant No. NAG3-2751) and SRI. The authors thank B. Clausen, D. Brown, and T. Sisneros at LANL for experimental assistance. This work has benefited from the use of the Lujan Neutron Scattering Center at LANSCE, which is funded by the Office of Basic Energy Sciences (DOE). LANL is operated by Los Alamos National Security LLC under DOE Contract No. DE-AC52-06NA25396. NR 14 TC 1 Z9 1 U1 3 U2 10 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 30 PY 2010 VL 97 IS 9 AR 091910 DI 10.1063/1.3481694 PG 3 WC Physics, Applied SC Physics GA 654SB UT WOS:000282187200019 ER PT J AU Lee, GD Wang, CZ Yoon, E Hwang, NM Ho, KM AF Lee, Gun-Do Wang, Cai-Zhuang Yoon, Euijoon Hwang, Nong-Moon Ho, Kai-Ming TI The role of pentagon-heptagon pair defect in carbon nanotube: The center of vacancy reconstruction SO APPLIED PHYSICS LETTERS LA English DT Article ID INTRAMOLECULAR JUNCTIONS AB We show that pentagon heptagon (5-7) pair defects in carbon nanotube play an important role as the center of vacancy reconstruction using tight-binding molecular dynamics simulations and ab initio total energy calculations. Single vacancy defect diffuses toward and coalesces with 5-7 pair defects and the coalescence structure is reconstructed into a new and more stable 5-7 pair defect plus an adatom by an exchange mechanism. In the case of four single vacancy defects, the vacancy defects coalesce with 5-7 pair defects and form defect structures with nonhexagonal rings. Finally, these defective structures reconstruct into two new 5-7 pair defects. 2010 American Institute of Physics. [doi:10.1063/1.3481799] C1 [Lee, Gun-Do; Yoon, Euijoon] Seoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea. [Wang, Cai-Zhuang; Ho, Kai-Ming] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Wang, Cai-Zhuang; Ho, Kai-Ming] US DOE, Ames Lab, Ames, IA 50011 USA. [Yoon, Euijoon] Seoul Natl Univ, Dept Nano Sci & Technol, Grad Sch Convergence Sci & Technol, Suwon 433270, South Korea. [Hwang, Nong-Moon] Seoul Natl Univ, Natl Res Lab Charged Nanoparticles, Seoul 151742, South Korea. RP Lee, GD (reprint author), Seoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea. EM gdlee@snu.ac.kr RI Lee, Gun-Do/L-1259-2013 OI Lee, Gun-Do/0000-0001-8328-8625 FU KISTI; Basic Science Research Program [2010-0012670, 2010-0001833]; National Research Laboratory Program [M10600000159-06J0000-15910]; Ministry of Education, Science, and Technology [R31-2008-000-10075-0]; U.S. Department of Energy, Basic Energy Sciences; National Energy Research Supercomputing Center (NERSC) in Berkeley [DE-AC02-07CH11358] FX The authors acknowledge support from KISTI under the Strategic Supercomputing Applications Support Program.. This research was supported by the Basic Science Research Program (Grant Nos. 2010-0012670 and 2010-0001833) and by the National Research Laboratory Program (Grant No. M10600000159-06J0000-15910) and by World Class University program (Grant No. R31-2008-000-10075-0) through the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science, and Technology. Work at Ames Laboratory was supported by the U.S. Department of Energy, Basic Energy Sciences, including a grant of computer time at the National Energy Research Supercomputing Center (NERSC) in Berkeley, under Contract No. DE-AC02-07CH11358. NR 24 TC 16 Z9 16 U1 2 U2 15 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 30 PY 2010 VL 97 IS 9 AR 093106 DI 10.1063/1.3481799 PG 3 WC Physics, Applied SC Physics GA 654SB UT WOS:000282187200057 ER PT J AU Parker, JB Raitses, Y Fisch, NJ AF Parker, J. B. Raitses, Y. Fisch, N. J. TI Transition in electron transport in a cylindrical Hall thruster SO APPLIED PHYSICS LETTERS LA English DT Article ID STATIONARY PLASMA THRUSTER AB Through the use of high-speed camera and Langmuir probe measurements in a cylindrical Hall thruster, we report the discovery of a rotating spoke of increased plasma density and light emission which correlates with increased electron transport across the magnetic field. As cathode electron emission is increased, a sharp transition occurs where the spoke disappears and electron transport decreases. This suggests that a significant fraction of the electron current might be directed through the spoke. (C) 2010 American Institute of Physics. [doi:10.1063/1.3486164] C1 [Parker, J. B.; Raitses, Y.; Fisch, N. J.] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Parker, JB (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. EM jbparker@pppl.gov OI Parker, Jeffrey/0000-0002-9079-9930 FU NSF; U.S. DOE [AC02-76CH0-3073]; AFOSR FX The authors thank Evan Davis and C. Leland Ellison for contributions to the experiments and Artem Smirnov for fruitful discussions. This material is based upon work supported under an NSF Graduate Research Fellowship. This work was also supported by the U.S. DOE under Contract No. AC02-76CH0-3073 and the AFOSR. NR 16 TC 32 Z9 32 U1 2 U2 15 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 30 PY 2010 VL 97 IS 9 AR 091501 DI 10.1063/1.3486164 PG 3 WC Physics, Applied SC Physics GA 654SB UT WOS:000282187200008 ER PT J AU Romero, MJ Alberi, K Martin, IT Jones, KM Young, DL Yan, Y Teplin, C Al-Jassim, MM Stradins, P Branz, HM AF Romero, M. J. Alberi, K. Martin, I. T. Jones, K. M. Young, D. L. Yan, Y. Teplin, C. Al-Jassim, M. M. Stradins, P. Branz, H. M. TI Nanoscale measurements of local junction breakdown in epitaxial film silicon solar cells SO APPLIED PHYSICS LETTERS LA English DT Article ID DEPOSITION; GLASS AB In this contribution, the authors report on near-field scanning optical microscopy measurements of the luminescence emitted from localized junction breakdown in epitaxial silicon solar cells. Our measurements suggest that the observed local reduction in breakdown voltage results from avalanche multiplication assisted by the reinforcing combination of (i) the local enhancement of the electrostatic field at the apex of inverted pyramid pits and (ii) the participation of defect states in the avalanche breakdown. Transmission electron microscopy reveals the microstructure of the defect responsible for the local junction breakdown. (C) 2010 American Institute of Physics. [doi:10.1063/1.3479534] C1 [Romero, M. J.; Alberi, K.; Martin, I. T.; Jones, K. M.; Young, D. L.; Yan, Y.; Teplin, C.; Al-Jassim, M. M.; Stradins, P.; Branz, H. M.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Romero, MJ (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM manuel.romero@nrel.gov RI Martin, Ina/J-9484-2012 FU U.S. Department of Energy [DE-AC36-08-GO28308] FX This work was supported by the U.S. Department of Energy under Contract No. DE-AC36-08-GO28308. NR 15 TC 7 Z9 7 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 30 PY 2010 VL 97 IS 9 AR 092107 DI 10.1063/1.3479534 PG 3 WC Physics, Applied SC Physics GA 654SB UT WOS:000282187200026 ER PT J AU Yang, F Kemik, N Biegalski, MD Christen, HM Arenholz, E Takamura, Y AF Yang, F. Kemik, N. Biegalski, M. D. Christen, H. M. Arenholz, E. Takamura, Y. TI Strain engineering to control the magnetic and magnetotransport properties of La0.67Sr0.33MnO3 thin films SO APPLIED PHYSICS LETTERS LA English DT Article ID PHASE-DIAGRAM; MANGANITES; MAGNETORESISTANCE; DIFFRACTION AB Strain engineering can be used to tailor the magnetic and magnetotransport properties of La0.67Sr0.33MnO3 thin films by varying the tetragonal distortion (c/a ratio) between a compressive strain of 1.005 and a tensile strain of 0.962 through the choice of the substrate type and the presence of a buffer layer. We find that increasing the tensile tetragonal distortion of the La0.67Sr0.33MnO3 thin film decreases the saturation magnetization, changes the temperature dependence of the resistivity and magnetoresistance, and increases the resistivity by several orders of magnitude. 2010 American Institute of Physics. [doi:10.1063/1.3484147] C1 [Yang, F.; Kemik, N.; Takamura, Y.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. [Biegalski, M. D.; Christen, H. M.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Arenholz, E.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Yang, F (reprint author), Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. EM fzyang@ucdavis.edu RI Christen, Hans/H-6551-2013 OI Christen, Hans/0000-0001-8187-7469 FU Division of Scientific User Facilities, Office of Basic Energy Sciences, U.S. Department of Energy [DE-AC02-05CH11231]; UC Davis; National Science Foundation [DMR 0747896] FX We thank Dr. R. Chopdekar and Dr. Y. Suzuki for assistance with the magnetotransport measurements. Research at the ALS (Contract No. DE-AC02-05CH11231) and CNMS is supported by the Division of Scientific User Facilities, Office of Basic Energy Sciences, U.S. Department of Energy. Research at UC Davis is supported by UC Davis start-up funds and the National Science Foundation (Contract No. DMR 0747896). NR 19 TC 27 Z9 27 U1 2 U2 28 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 30 PY 2010 VL 97 IS 9 AR 092503 DI 10.1063/1.3484147 PG 3 WC Physics, Applied SC Physics GA 654SB UT WOS:000282187200041 ER PT J AU Zhao, YF Xu, QA Simpson, LJ Dillon, AC AF Zhao, Yufeng Xu, Qiang Simpson, Lin J. Dillon, Anne C. TI Prediction of diamond-like, metallic boron structures SO CHEMICAL PHYSICS LETTERS LA English DT Article ID AB-INITIO; NANOTUBES; CLUSTERS; BUCKYBALL; BONDS AB Diamond-like boron crystal structures are predicted employing a decoration scheme, in which the normal and hexagonal diamond frameworks are decorated with extra atoms across the basal plane. The predicted boron crystals can be viewed as isomorphs of alpha(Ga) structured boron, but have a much higher density of states (DOS) near the Fermi levels. This study may provide a more plausible explanation for the nonmetal-metal transition and the anomalous superconductivity of boron under high pressure. (C) 2010 Elsevier B.V. All rights reserved. C1 [Zhao, Yufeng; Xu, Qiang; Simpson, Lin J.; Dillon, Anne C.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Zhao, YF (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. EM yufeng_zhao@nrel.gov FU US Department of Energy's Hydrogen Sorption Center of Excellence [DE-AC36-08GO28308] FX The authors acknowledge support from the US Department of Energy's Hydrogen Sorption Center of Excellence under contract No. DE-AC36-08GO28308 to NREL. Computing time was provided by DOE's National Energy Research Scientific Computing (NERSC) Center. NR 26 TC 1 Z9 1 U1 2 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD AUG 30 PY 2010 VL 496 IS 4-6 BP 280 EP 283 DI 10.1016/j.cplett.2010.07.061 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 646GF UT WOS:000281525800010 ER PT J AU Clarke, J AF Clarke, John TI SQUIDs: THEN AND NOW SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article ID QUANTUM INTERFERENCE DEVICE; MICROTESLA MAGNETIC-FIELDS; QUASIPARTICLE POTENTIAL DIFFERENCE; CURRENT-VOLTAGE CHARACTERISTICS; LOW-FREQUENCY APPLICATIONS; JUNCTION DC SQUID; NONEQUILIBRIUM SUPERCONDUCTORS; RADIOFREQUENCY-AMPLIFIER; JOSEPHSON JUNCTIONS; FLUX QUANTIZATION AB This chapter is dedicated to the memory of Brian Pippard. C1 [Clarke, John] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Clarke, John] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Clarke, J (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM jclarke@berkeley.edu FU Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy [DE-AC02-05CH11231] FX I thank the members of my research group and numerous other collaborators for their countless contributions to the research described in this chapter. I am grateful to Mark Ketchen, Adrian Lee, Bernard Sadoulet and Paul Richards for insightful discussions during the preparation of this manuscript. The writing of this article was supported 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-AC02-05CH11231. NR 104 TC 4 Z9 4 U1 1 U2 17 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2010 VL 24 IS 20-21 BP 3999 EP 4038 DI 10.1142/S0217979210056438 PG 40 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 665ZX UT WOS:000283077900009 ER PT J AU Chu, CW AF Chu, C. W. TI THE EVOLUTION OF HTS: T-c-EXPERIMENT PERSPECTIVES SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article ID O COMPOUND SYSTEM; BULK SUPERCONDUCTIVITY; TRANSITION-TEMPERATURE; 18 K; LA; ELECTRONS; PRESSURE; CECU2SI2; LIFEAS AB The rise of the superconducting transition temperature T-c has been reviewed in three major superconducting systems: the cuprate, the Fe-pnictide and the heavy fermion. While the first two systems display high T(c)s, heavy fermion superconductors show low T-c but embody many crucial features found in the others. The prospect of future superconductors with higher T-c, preferably close to room temperature, is also discussed. Those interested in the detailed physics of high temperature superconductivity are referred to the article by E. Abrahams in the next chapter of this book and reviews published elsewhere. C1 [Chu, C. W.] Univ Houston, Lawrence Berkeley Natl Lab, Houston, TX 77004 USA. [Chu, C. W.] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China. RP Chu, CW (reprint author), Univ Houston, Lawrence Berkeley Natl Lab, Houston, TX 77004 USA. FU U.S. Air Force Office of Scientific Research; U.S. Department of Energy through Oak Ridge National Laboratory; T.L.L. Temple Foundation; John J. and Rebecca Moores Endowment; Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering of the U.S. Department of Energy FX I would like to thank my colleagues Yuyi Xue and Bernd Lorenz for discussions and in the preparation of figures. Partial support for the work in Houston by the U.S. Air Force Office of Scientific Research, the U.S. Department of Energy through Oak Ridge National Laboratory, the T.L.L. Temple Foundation, the John J. and Rebecca Moores Endowment, and the State of Texas through the Texas Center for Superconductivity at the University of Houston; and at Lawrence Berkeley Laboratory by the Director, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering of the U.S. Department of Energy is greatly appreciated. NR 52 TC 3 Z9 3 U1 0 U2 10 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2010 VL 24 IS 20-21 BP 4102 EP 4149 DI 10.1142/S0217979210056463 PG 48 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 665ZX UT WOS:000283077900012 ER PT J AU Steinbrener, J Nelson, J Huang, XJ Marchesini, S Shapiro, D Turner, JJ Jacobsen, C AF Steinbrener, Jan Nelson, Johanna Huang, Xiaojing Marchesini, Stefano Shapiro, David Turner, Joshua J. Jacobsen, Chris TI Data preparation and evaluation techniques for x-ray diffraction microscopy SO OPTICS EXPRESS LA English DT Article ID PHASE RETRIEVAL; TRANSMISSION; RECONSTRUCTION; SCATTERING AB The post-experiment processing of X-ray Diffraction Microscopy data is often time-consuming and difficult. This is mostly due to the fact that even if a preliminary result has been reconstructed, there is no definitive answer as to whether or not a better result with more consistently retrieved phases can still be obtained. We show here that the first step in data analysis, the assembly of two-dimensional diffraction patterns from a large set of raw diffraction data, is crucial to obtaining reconstructions of highest possible consistency. We have developed software that automates this process and results in consistently accurate diffraction patterns. We have furthermore derived some criteria of validity for a tool commonly used to assess the consistency of reconstructions, the phase retrieval transfer function, and suggest a modified version that has improved utility for judging reconstruction quality. (C) 2010 Optical Society of America C1 [Steinbrener, Jan; Nelson, Johanna; Huang, Xiaojing; Turner, Joshua J.; Jacobsen, Chris] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. [Marchesini, Stefano; Shapiro, David] Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. [Jacobsen, Chris] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. [Jacobsen, Chris] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Steinbrener, J (reprint author), SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. EM jan.steinbrener@stonybrook.edu RI Marchesini, Stefano/A-6795-2009; Huang, Xiaojing/K-3075-2012; Jacobsen, Chris/E-2827-2015; Nelson Weker, Johanna/J-4159-2015 OI Huang, Xiaojing/0000-0001-6034-5893; Jacobsen, Chris/0000-0001-8562-0353; Nelson Weker, Johanna/0000-0001-6856-3203 FU Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, at the Department of Energy [DE-FG02-07ER46128]; National Institute for General Medical Services at the National Institutes for Health [5R21EB6134] FX We wish to thank David Sayre, Malcolm Howells, Aaron Neiman and Janos Kirz for their continued contribution. We also wish to thank the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, at the Department of Energy for support of x-ray diffraction microscopy methods and instrumentation development under contract DE-FG02-07ER46128 and the National Institute for General Medical Services at the National Institutes for Health for support of the application of this method to biological imaging under contract 5R21EB6134. NR 39 TC 14 Z9 14 U1 1 U2 7 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 1094-4087 J9 OPT EXPRESS JI Opt. Express PD AUG 30 PY 2010 VL 18 IS 18 BP 18598 EP 18614 DI 10.1364/OE.18.018598 PG 17 WC Optics SC Optics GA 653PE UT WOS:000282107900011 PM 20940752 ER PT J AU Lee, CC Hsueh, HC Ku, W AF Lee, Chi-Cheng Hsueh, H. C. Ku, Wei TI Dynamical linear response of TDDFT with LDA plus U functional: Strongly hybridized Frenkel excitons in NiO SO PHYSICAL REVIEW B LA English DT Article ID TIME; ELECTRON; INSULATORS; EXCITATIONS; ABSORPTION; CLUSTERS; SPECTRA AB Within the framework of time-dependent density-functional theory (TDDFT), we derive the dynamical linear response of local-density approximation plus U functional and benchmark it on NiO, a prototypical Mott insulator. Formulated using real-space Wannier functions, our computationally inexpensive framework gives detailed insights into the formation of tightly bound Frenkel excitons with reasonable accuracy. Specifically, a strong hybridization of multiple excitons is found to significantly modify the exciton properties. Furthermore, our study exposes a significant generic limitation of adiabatic approximation in TDDFT with hybrid functionals and in existing Bethe-Salpeter-equation approaches, advocating the necessity of strongly energy-dependent kernels in future development. C1 [Lee, Chi-Cheng; Ku, Wei] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. [Lee, Chi-Cheng; Hsueh, H. C.] Tamkang Univ, Dept Phys, Tamsui 25137, Taiwan. [Ku, Wei] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11790 USA. RP Lee, CC (reprint author), Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. RI Lee, Chi-Cheng/F-5057-2015 OI Lee, Chi-Cheng/0000-0002-3895-9802 FU U.S. Department of Energy (DOE), Office of Basic Energy Science [DE-AC02-98CH10886]; DOE CMSN; National Science Council [NSC 99-2112-M-032-007]; NCTS of ROC FX This work is supported by the U.S. Department of Energy (DOE), Office of Basic Energy Science, under Contract No. DE-AC02-98CH10886, and DOE CMSN. H. C. Hsueh thanks National Science Council (Grant No. NSC 99-2112-M-032-007) and NCTS of ROC for support, and also NCHC of ROC for CPU time. NR 35 TC 13 Z9 13 U1 1 U2 6 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 AUG 30 PY 2010 VL 82 IS 8 AR 081106 DI 10.1103/PhysRevB.82.081106 PG 4 WC Physics, Condensed Matter SC Physics GA 644IA UT WOS:000281367200001 ER PT J AU Sergueev, N Tsetseris, L Varga, K Pantelides, S AF Sergueev, Nikolai Tsetseris, Leonidas Varga, Kalman Pantelides, Sokrates TI Configuration and conductance evolution of benzene-dithiol molecular junctions under elongation SO PHYSICAL REVIEW B LA English DT Article ID AUGMENTED-WAVE METHOD; TRANSPORT-PROPERTIES; ROOM-TEMPERATURE; NANOSTRUCTURE AB Benzene-dithiol is a prototype molecular junction that exhibits a perplexing conductance behavior. Here we report density-functional total-energy and conductance calculations during a simulated elongation process, pulling the electrodes apart from an initial proximal distance, as in related experiments. We find that transformations between different elongation paths result in ranges of small and large conductances, fluctuations, and discontinuities. The obtained complex conformational and conductance evolution allows us to account for the experimental observations. C1 [Sergueev, Nikolai; Tsetseris, Leonidas; Varga, Kalman; Pantelides, Sokrates] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. [Tsetseris, Leonidas] Natl Tech Univ Athens, Dept Phys, GR-15780 Athens, Greece. [Pantelides, Sokrates] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Sergueev, N (reprint author), Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. RI Varga, Kalman/A-7102-2013 NR 30 TC 29 Z9 29 U1 2 U2 59 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 30 PY 2010 VL 82 IS 7 AR 073106 DI 10.1103/PhysRevB.82.073106 PG 4 WC Physics, Condensed Matter SC Physics GA 644HT UT WOS:000281365800002 ER PT J AU Aggarwal, MM Ahammed, Z Alakhverdyants, AV Alekseev, I Alford, J Anderson, BD Arkhipkin, D Averichev, GS Balewski, J Barnby, LS Baumgart, S Beavis, DR Bellwied, R Betancourt, MJ Betts, RR Bhasin, A Bhati, AK Bichsel, H Bielcik, J Bielcikova, J Biritz, B Bland, LC Bonner, BE Bouchet, J Braidot, E Brandin, AV Bridgeman, A Bruna, E Bueltmann, S Bunzarov, I Burton, TP Cai, XZ Caines, H Sanchez, MCD Catu, O Cebra, D Cendejas, R Cervantes, MC Chajecki, Z Chaloupka, P Chattopadhyay, S Chen, HF Chen, JH Chen, JY Cheng, J Cherney, M Chikanian, A Choi, KE Christie, W Chung, P Clarke, RF Codrington, MJM Corliss, R Cramer, JG Crawford, HJ Das, D Dash, S Leyva, AD De Silva, LC Debbe, RR Dedovich, TG Derevschikov, AA de Souza, RD Didenko, L Djawotho, P Dogra, SM Dong, X Drachenberg, JL Draper, JE Dunlop, JC Mazumdar, MRD Efimov, LG Elhalhuli, E Elnimr, M Engelage, J Eppley, G Erazmus, B Estienne, M Eun, L Evdokimov, O Fachini, P Fatemi, R Fedorisin, J Fersch, RG Filip, P Finch, E Fine, V Fisyak, Y Gagliardi, CA Gangadharan, DR Ganti, MS Garcia-Solis, EJ Geromitsos, A Geurts, F Ghazikhanian, V Ghosh, P Gorbunov, YN Gordon, A Grebenyuk, O Grosnick, D Guertin, SM Gupta, A Gupta, N Guryn, W Haag, B Hamed, A Han, LX Harris, JW Hays-Wehle, JP Heinz, M Heppelmann, S Hirsch, A Hjort, E Hoffman, AM Hoffmann, GW Hofman, DJ Horner, MJ Huang, B Huang, HZ Humanic, TJ Huo, L Igo, G Jacobs, P Jacobs, WW Jena, C Jin, F Jones, CL Jones, PG Joseph, J Judd, EG Kabana, S Kajimoto, K Kang, K Kapitan, J Kauder, K Keane, D Kechechyan, A Kettler, D Kikola, DP Kiryluk, J Kisiel, A Klein, SR Knospe, AG Kocoloski, A Koetke, DD Kollegger, T Konzer, J Koralt, I Koroleva, L Korsch, W Kotchenda, L Kouchpil, V Kravtsov, P Krueger, K Krus, M Kumar, L Kurnadi, P Lamont, MAC Landgraf, JM LaPointe, S Lauret, J Lebedev, A Lednicky, R Lee, CH Lee, JH Leight, W LeVine, MJ Li, C Li, L Li, N Li, W Li, X Li, X Li, Y Li, ZM Lin, G Lindenbaum, SJ Lisa, MA Liu, F Liu, H Liu, J Ljubicic, T Llope, WJ Longacre, RS Love, WA Lu, Y Luo, X Ma, GL Ma, YG Mahapatra, DP Majka, R Mall, OI Mangotra, LK Manweiler, R Margetis, S Markert, C Masui, H Matis, HS Matulenko, YA McDonald, D McShane, TS Meschanin, A Milner, R Minaev, NG Mioduszewski, S Mischke, A Mitrovski, MK Mohanty, B Mondal, MM Morozov, B Morozov, DA Munhoz, MG Nandi, BK Nattrass, C Nayak, TK Nelson, JM Netrakanti, PK Ng, MJ Nogach, LV Nurushev, SB Odyniec, G Ogawa, A Okorokov, V Oldag, EW Olson, D Pachr, M Page, BS Pal, SK Pandit, Y Panebratsev, Y Pawlak, T Peitzmann, T Perevoztchikov, V Perkins, C Peryt, W Phatak, SC Pile, P Planinic, M Ploskon, MA Pluta, J Plyku, D Poljak, N Poskanzer, AM Potukuchi, BVKS Powell, CB Prindle, D Pruneau, C Pruthi, NK Pujahari, PR Putschke, J Raniwala, R Raniwala, S Ray, RL Redwine, R Reed, R Ritter, HG Roberts, JB Rogachevskiy, OV Romero, JL Rose, A Roy, C Ruan, L Sahoo, R Sakai, S Sakrejda, I Sakuma, T Salur, S Sandweiss, J Sangaline, E Schambach, J Scharenberg, RP Schmitz, N Schuster, TR Seele, J Seger, J Selyuzhenkov, I Seyboth, P Shahaliev, E Shao, M Sharma, M Shi, SS Sichtermann, EP Simon, F Singaraju, RN Skoby, MJ Smirnov, N Sorensen, P Sowinski, J Spinka, HM Srivastava, B Stanislaus, TDS Staszak, D Stevens, JR Stock, R Strikhanov, M Stringfellow, B Suaide, AAP Suarez, MC Subba, NL Sumbera, M Sun, XM Sun, Y Sun, Z Surrow, B Svirida, DN Symons, TJM de Toledo, AS Takahashi, J Tang, AH Tang, Z Tarini, LH Tarnowsky, T Thein, D Thomas, JH Tian, J Timmins, AR Timoshenko, S Tlusty, D Tokarev, M Trainor, TA Tram, VN Trentalange, S Tribble, RE Tsai, OD Ulery, J Ullrich, T Underwood, DG Van Buren, G van Leeuwen, M van Nieuwenhuizen, G Vanfossen, JA Varma, R Vasconcelos, GMS Vasiliev, AN Videbaek, F Viyogi, YP Vokal, S Voloshin, SA Wada, M Walker, M Wang, F Wang, G Wang, H Wang, JS Wang, Q Wang, XL Wang, Y Webb, G Webb, JC Westfall, GD Whitten, C Wieman, H Wissink, SW Witt, R Wu, YF Xie, W Xu, N Xu, QH Xu, W Xu, Y Xu, Z Xue, L Yang, Y Yepes, P Yip, K Yoo, IK Yue, Q Zawisza, M Zbroszczyk, H Zhan, W Zhang, JB Zhang, S Zhang, WM Zhang, XP Zhang, Y Zhang, ZP Zhao, J Zhong, C Zhou, J Zhou, W Zhu, X Zhu, YH Zoulkarneev, R Zoulkarneeva, Y AF Aggarwal, M. M. Ahammed, Z. Alakhverdyants, A. V. Alekseev, I. Alford, J. Anderson, B. D. Arkhipkin, D. Averichev, G. S. Balewski, J. Barnby, L. S. Baumgart, S. Beavis, D. R. Bellwied, R. Betancourt, M. J. Betts, R. R. Bhasin, A. Bhati, A. K. Bichsel, H. Bielcik, J. Bielcikova, J. Biritz, B. Bland, L. C. Bonner, B. E. Bouchet, J. Braidot, E. Brandin, A. V. Bridgeman, A. Bruna, E. Bueltmann, S. Bunzarov, I. Burton, T. P. Cai, X. Z. Caines, H. Sanchez, M. Calderon de la Barca Catu, O. Cebra, D. Cendejas, R. Cervantes, M. C. Chajecki, Z. Chaloupka, P. Chattopadhyay, S. Chen, H. F. Chen, J. H. Chen, J. Y. Cheng, J. Cherney, M. Chikanian, A. Choi, K. E. Christie, W. Chung, P. Clarke, R. F. Codrington, M. J. M. Corliss, R. Cramer, J. G. Crawford, H. J. Das, D. Dash, S. Leyva, A. Davila De Silva, L. C. Debbe, R. R. Dedovich, T. G. Derevschikov, A. A. de Souza, R. Derradi Didenko, L. Djawotho, P. Dogra, S. M. Dong, X. Drachenberg, J. L. Draper, J. E. Dunlop, J. C. Mazumdar, M. R. Dutta Efimov, L. G. Elhalhuli, E. Elnimr, M. Engelage, J. Eppley, G. Erazmus, B. Estienne, M. Eun, L. Evdokimov, O. Fachini, P. Fatemi, R. Fedorisin, J. Fersch, R. G. Filip, P. Finch, E. Fine, V. Fisyak, Y. Gagliardi, C. A. Gangadharan, D. R. Ganti, M. S. Garcia-Solis, E. J. Geromitsos, A. Geurts, F. Ghazikhanian, V. Ghosh, P. Gorbunov, Y. N. Gordon, A. Grebenyuk, O. Grosnick, D. Guertin, S. M. Gupta, A. Gupta, N. Guryn, W. Haag, B. Hamed, A. Han, L. -X. Harris, J. W. Hays-Wehle, J. P. Heinz, M. Heppelmann, S. Hirsch, A. Hjort, E. Hoffman, A. M. Hoffmann, G. W. Hofman, D. J. Horner, M. J. Huang, B. Huang, H. Z. Humanic, T. J. Huo, L. Igo, G. Jacobs, P. Jacobs, W. W. Jena, C. Jin, F. Jones, C. L. Jones, P. G. Joseph, J. Judd, E. G. Kabana, S. Kajimoto, K. Kang, K. Kapitan, J. Kauder, K. Keane, D. Kechechyan, A. Kettler, D. Kikola, D. P. Kiryluk, J. Kisiel, A. Klein, S. R. Knospe, A. G. Kocoloski, A. Koetke, D. D. Kollegger, T. Konzer, J. Koralt, I. Koroleva, L. Korsch, W. Kotchenda, L. Kouchpil, V. Kravtsov, P. Krueger, K. Krus, M. Kumar, L. Kurnadi, P. Lamont, M. A. C. Landgraf, J. M. LaPointe, S. Lauret, J. Lebedev, A. Lednicky, R. Lee, C. -H. Lee, J. H. Leight, W. LeVine, M. J. Li, C. Li, L. Li, N. Li, W. Li, X. Li, X. Li, Y. Li, Z. M. Lin, G. Lindenbaum, S. J. Lisa, M. A. Liu, F. Liu, H. Liu, J. Ljubicic, T. Llope, W. J. Longacre, R. S. Love, W. A. Lu, Y. Luo, X. Ma, G. L. Ma, Y. G. Mahapatra, D. P. Majka, R. Mall, O. I. Mangotra, L. K. Manweiler, R. Margetis, S. Markert, C. Masui, H. Matis, H. S. Matulenko, Yu. A. McDonald, D. McShane, T. S. Meschanin, A. Milner, R. Minaev, N. G. Mioduszewski, S. Mischke, A. Mitrovski, M. K. Mohanty, B. Mondal, M. M. Morozov, B. Morozov, D. A. Munhoz, M. G. Nandi, B. K. Nattrass, C. Nayak, T. K. Nelson, J. M. Netrakanti, P. K. Ng, M. J. Nogach, L. V. Nurushev, S. B. Odyniec, G. Ogawa, A. Okorokov, V. Oldag, E. W. Olson, D. Pachr, M. Page, B. S. Pal, S. K. Pandit, Y. Panebratsev, Y. Pawlak, T. Peitzmann, T. Perevoztchikov, V. Perkins, C. Peryt, W. Phatak, S. C. Pile, P. Planinic, M. Ploskon, M. A. Pluta, J. Plyku, D. Poljak, N. Poskanzer, A. M. Potukuchi, B. V. K. S. Powell, C. B. Prindle, D. Pruneau, C. Pruthi, N. K. Pujahari, P. R. Putschke, J. Raniwala, R. Raniwala, S. Ray, R. L. Redwine, R. Reed, R. Ritter, H. G. Roberts, J. B. Rogachevskiy, O. V. Romero, J. L. Rose, A. Roy, C. Ruan, L. Sahoo, R. Sakai, S. Sakrejda, I. Sakuma, T. Salur, S. Sandweiss, J. Sangaline, E. Schambach, J. Scharenberg, R. P. Schmitz, N. Schuster, T. R. Seele, J. Seger, J. Selyuzhenkov, I. Seyboth, P. Shahaliev, E. Shao, M. Sharma, M. Shi, S. S. Sichtermann, E. P. Simon, F. Singaraju, R. N. Skoby, M. J. Smirnov, N. Sorensen, P. Sowinski, J. Spinka, H. M. Srivastava, B. Stanislaus, T. D. S. Staszak, D. Stevens, J. R. Stock, R. Strikhanov, M. Stringfellow, B. Suaide, A. A. P. Suarez, M. C. Subba, N. L. Sumbera, M. Sun, X. M. Sun, Y. Sun, Z. Surrow, B. Svirida, D. N. Symons, T. J. M. de Toledo, A. Szanto Takahashi, J. Tang, A. H. Tang, Z. Tarini, L. H. Tarnowsky, T. Thein, D. Thomas, J. H. Tian, J. Timmins, A. R. Timoshenko, S. Tlusty, D. Tokarev, M. Trainor, T. A. Tram, V. N. Trentalange, S. Tribble, R. E. Tsai, O. D. Ulery, J. Ullrich, T. Underwood, D. G. Van Buren, G. van Leeuwen, M. van Nieuwenhuizen, G. Vanfossen, J. A., Jr. Varma, R. Vasconcelos, G. M. S. Vasiliev, A. N. Videbaek, F. Viyogi, Y. P. Vokal, S. Voloshin, S. A. Wada, M. Walker, M. Wang, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Webb, G. Webb, J. C. Westfall, G. D. Whitten, C., Jr. Wieman, H. Wissink, S. W. Witt, R. Wu, Y. F. Xie, W. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xue, L. Yang, Y. Yepes, P. Yip, K. Yoo, I. -K. Yue, Q. Zawisza, M. Zbroszczyk, H. Zhan, W. Zhang, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhao, J. Zhong, C. Zhou, J. Zhou, W. Zhu, X. Zhu, Y. H. Zoulkarneev, R. Zoulkarneeva, Y. CA STAR Collaboration TI Azimuthal di-hadron correlations in d plus Au and Au plus Au collisions at root s(NN)=200 GeV measured at the STAR detector SO PHYSICAL REVIEW C LA English DT Article ID AU+AU COLLISIONS; RADIATION; PLASMA AB Yields, correlation shapes, and mean transverse momenta p(T) of charged particles associated with intermediate-to high-p(T) trigger particles (2.5 < p(T) < 10 GeV/c) in d + Au and Au + Au collisions at root s(NN) = 200 GeV are presented. For associated particles at higher p(T) greater than or similar to 2.5 GeV/c, narrow correlation peaks are seen in d + Au and Au + Au, indicating that the main production mechanism is jet fragmentation. At lower associated particle pT < 2 GeV/c, a large enhancement of the near- (Delta phi similar to 0) and away-side (Delta phi similar to pi) associated yields is found, together with a strong broadening of the away-side azimuthal distributions in Au + Au collisions compared to d + Au measurements, suggesting that other particle production mechanisms play a role. This is further supported by the observed significant softening of the away-side associated particle yield distribution at Delta phi similar to pi in central Au + Au collisions. C1 [Aggarwal, M. M.; Bhati, A. K.; Pruthi, N. K.] Panjab Univ, Chandigarh 160014, India. [Bridgeman, A.; Krueger, K.; Spinka, H. M.; Underwood, D. G.] Argonne Natl Lab, Argonne, IL 60439 USA. [Barnby, L. S.; Elhalhuli, E.; Jones, P. G.; Nelson, J. M.] Univ Birmingham, Birmingham, W Midlands, England. [Arkhipkin, D.; Beavis, D. R.; Bland, L. C.; Burton, T. P.; Christie, W.; Debbe, R. R.; Didenko, L.; Dunlop, J. C.; Fachini, P.; Fine, V.; Fisyak, Y.; Gordon, A.; Guryn, W.; Lamont, M. A. C.; Landgraf, J. M.; Lauret, J.; Lebedev, A.; Lee, J. H.; LeVine, M. J.; Ljubicic, T.; Longacre, R. S.; Love, W. A.; Ogawa, A.; Perevoztchikov, V.; Pile, P.; Ruan, L.; Sorensen, P.; Tang, A. H.; Ullrich, T.; Van Buren, G.; Videbaek, F.; Webb, J. C.; Xu, Z.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Crawford, H. J.; Engelage, J.; Judd, E. G.; Ng, M. J.; Perkins, C.] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Cherney, M.; Gorbunov, Y. N.; McShane, T. S.; Seger, J.] Univ Calif Davis, Davis, CA 95616 USA. [Biritz, B.; Cendejas, R.; Gangadharan, D. R.; Ghazikhanian, V.; Guertin, S. M.; Huang, H. Z.; Igo, G.; Kurnadi, P.; Sakai, S.; Staszak, D.; Trentalange, S.; Tsai, O. D.; Wang, G.; Whitten, C., Jr.; Xu, W.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA. [de Souza, R. Derradi; Takahashi, J.; Vasconcelos, G. M. S.] Univ Estadual Campinas, Sao Paulo, Brazil. [Betts, R. 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[Bhasin, A.; Dogra, S. M.; Gupta, A.; Gupta, N.; Mangotra, L. K.; Potukuchi, B. V. K. S.] Univ Jammu, Jammu 180001, India. [Alakhverdyants, A. V.; Averichev, G. S.; Bunzarov, I.; Dedovich, T. G.; Efimov, L. G.; Fedorisin, J.; Filip, P.; Kechechyan, A.; Lednicky, R.; Panebratsev, Y.; Rogachevskiy, O. V.; Shahaliev, E.; Tokarev, M.; Vokal, S.; Zoulkarneev, R.; Zoulkarneeva, Y.] Dubna Joint Nucl Res Inst, RU-141980 Dubna, Russia. [Alford, J.; Anderson, B. D.; Bouchet, J.; Joseph, J.; Keane, D.; Kumar, L.; Margetis, S.; Pandit, Y.; Subba, N. L.; Vanfossen, J. A., Jr.; Zhang, W. M.] Kent State Univ, Kent, OH 44242 USA. [Fatemi, R.; Fersch, R. G.; Korsch, W.; Webb, G.] Univ Kentucky, Lexington, KY 40506 USA. [Sun, Z.; Wang, J. S.; Yang, Y.; Zhan, W.] Inst Modern Phys, Lanzhou, Peoples R China. [Ahammed, Z.; Dong, X.; Grebenyuk, O.; Hjort, E.; Horner, M. J.; Jacobs, P.; Kikola, D. P.; Kiryluk, J.; Klein, S. R.; Masui, H.; Matis, H. S.; Odyniec, G.; Olson, D.; Ploskon, M. A.; Poskanzer, A. M.; Powell, C. B.; Ritter, H. G.; Rose, A.; Sakrejda, I.; Sichtermann, E. P.; Sun, X. M.; Symons, T. J. M.; Thomas, J. H.; Tram, V. N.; Wieman, H.; Xu, N.; Zhang, X. P.; Zhang, Y.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Balewski, J.; Betancourt, M. J.; Corliss, R.; Hays-Wehle, J. P.; Hoffman, A. M.; Jones, C. L.; Kocoloski, A.; Leight, W.; Milner, R.; Redwine, R.; Sakuma, T.; Seele, J.; Surrow, B.; van Nieuwenhuizen, G.; Walker, M.] MIT, Cambridge, MA 02139 USA. [Schmitz, N.; Seyboth, P.; Simon, F.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. [Tarnowsky, T.; Wang, H.; Westfall, G. D.] Michigan State Univ, E Lansing, MI 48824 USA. [Brandin, A. V.; Kotchenda, L.; Kravtsov, P.; Okorokov, V.; Strikhanov, M.; Timoshenko, S.] Moscow Engn Phys Inst, Moscow 115409, Russia. [Lindenbaum, S. J.] CUNY City Coll, New York, NY 10031 USA. [Braidot, E.; Mischke, A.; Peitzmann, T.; van Leeuwen, M.] NIKHEF H, NL-1009 DB Amsterdam, Netherlands. [Braidot, E.; Mischke, A.; Peitzmann, T.; van Leeuwen, M.] Univ Utrecht, Amsterdam, Netherlands. [Chajecki, Z.; Humanic, T. J.; Lisa, M. A.] Ohio State Univ, Columbus, OH 43210 USA. [Bueltmann, S.; Koralt, I.; Plyku, D.] Old Dominion Univ, Norfolk, VA 23529 USA. [Eun, L.; Heppelmann, S.] Penn State Univ, University Pk, PA 16802 USA. [Derevschikov, A. A.; Matulenko, Yu. A.; Meschanin, A.; Minaev, N. G.; Morozov, D. A.; Nogach, L. V.; Nurushev, S. B.; Vasiliev, A. N.] Inst High Energy Phys, Protvino, Russia. [Hirsch, A.; Konzer, J.; Li, X.; Netrakanti, P. K.; Scharenberg, R. P.; Skoby, M. J.; Srivastava, B.; Stringfellow, B.; Ulery, J.; Wang, F.; Wang, Q.; Xie, W.] Purdue Univ, W Lafayette, IN 47907 USA. [Choi, K. E.; Lee, C. -H.; Yoo, I. -K.] Pusan Natl Univ, Pusan 609735, South Korea. [Raniwala, R.; Raniwala, S.] Univ Rajasthan, Jaipur 302004, Rajasthan, India. [Bonner, B. E.; Eppley, G.; Geurts, F.; Liu, J.; Llope, W. J.; McDonald, D.; Roberts, J. B.; Yepes, P.; Zhou, J.] Rice Univ, Houston, TX 77251 USA. [Munhoz, M. G.; Suaide, A. A. P.; de Toledo, A. Szanto] Univ Sao Paulo, Sao Paulo, Brazil. [Chen, H. F.; Huang, B.; Li, C.; Lu, Y.; Luo, X.; Shao, M.; Sun, Y.; Tang, Z.; Wang, X. L.; Xu, Y.; Zhang, Z. P.] Univ Sci & Technol China, Hefei 230026, Peoples R China. [Li, X.; Xu, Q. H.; Zhou, W.] Shandong Univ, Jinan 250100, Shandong, Peoples R China. [Cai, X. Z.; Chen, J. H.; Han, L. -X.; Jin, F.; Li, W.; Ma, G. L.; Ma, Y. G.; Tian, J.; Xue, L.; Zhang, S.; Zhao, J.; Zhong, C.; Zhu, Y. H.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. [Erazmus, B.; Estienne, M.; Geromitsos, A.; Kabana, S.; Pal, S. K.; Roy, C.; Sahoo, R.] SUBATECH, Nantes, France. [Cervantes, M. C.; Clarke, R. F.; Codrington, M. J. M.; Djawotho, P.; Drachenberg, J. L.; Gagliardi, C. A.; Hamed, A.; Huo, L.; Mioduszewski, S.; Tribble, R. E.] Texas A&M Univ, College Stn, TX 77843 USA. [Leyva, A. Davila; Hoffmann, G. W.; Kajimoto, K.; Li, L.; Markert, C.; Oldag, E. W.; Ray, R. L.; Thein, D.; Wada, M.] Univ Texas Austin, Austin, TX 78712 USA. [Cheng, J.; Kang, K.; Li, Y.; Wang, Y.; Yue, Q.; Zhu, X.] Tsinghua Univ, Beijing 100084, Peoples R China. [Witt, R.] USN Acad, Annapolis, MD 21402 USA. [Grosnick, D.; Koetke, D. D.; Manweiler, R.; Stanislaus, T. D. S.] Valparaiso Univ, Valparaiso, IN 46383 USA. [Chattopadhyay, S.; Mazumdar, M. R. Dutta; Ganti, M. S.; Ghosh, P.; Mohanty, B.; Mondal, M. M.; Nayak, T. K.; Singaraju, R. N.; Viyogi, Y. P.] Ctr Variable Energy Cyclotron, Kolkata 700064, India. [Kisiel, A.; Pawlak, T.; Peryt, W.; Pluta, J.; Zawisza, M.; Zbroszczyk, H.] Warsaw Univ Technol, Warsaw, Poland. [Bichsel, H.; Cramer, J. G.; Kettler, D.; Prindle, D.; Trainor, T. A.] Univ Washington, Seattle, WA 98195 USA. [Bellwied, R.; De Silva, L. C.; Elnimr, M.; LaPointe, S.; Pruneau, C.; Sharma, M.; Tarini, L. H.; Timmins, A. R.; Voloshin, S. A.] Wayne State Univ, Detroit, MI 48201 USA. [Chen, J. Y.; Li, N.; Li, Z. M.; Liu, F.; Shi, S. S.; Wu, Y. F.; Zhang, J. B.] CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China. [Baumgart, S.; Bruna, E.; Caines, H.; Catu, O.; Chikanian, A.; Finch, E.; Harris, J. W.; Heinz, M.; Knospe, A. G.; Lin, G.; Majka, R.; Nattrass, C.; Putschke, J.; Sandweiss, J.; Smirnov, N.] Yale Univ, New Haven, CT 06520 USA. [Planinic, M.; Poljak, N.] Univ Zagreb, HR-10002 Zagreb, Croatia. RP Aggarwal, MM (reprint author), Panjab Univ, Chandigarh 160014, India. RI Okorokov, Vitaly/C-4800-2017; Ma, Yu-Gang/M-8122-2013; Alekseev, Igor/J-8070-2014; Sumbera, Michal/O-7497-2014; Strikhanov, Mikhail/P-7393-2014; Xu, Wenqin/H-7553-2014; Dogra, Sunil /B-5330-2013; Chaloupka, Petr/E-5965-2012; Huang, Bingchu/H-6343-2015; Nattrass, Christine/J-6752-2016; Derradi de Souza, Rafael/M-4791-2013; Suaide, Alexandre/L-6239-2016; Svirida, Dmitry/R-4909-2016; Inst. of Physics, Gleb Wataghin/A-9780-2017; Barnby, Lee/G-2135-2010; Mischke, Andre/D-3614-2011; Bielcikova, Jana/G-9342-2014; Takahashi, Jun/B-2946-2012; Planinic, Mirko/E-8085-2012; Peitzmann, Thomas/K-2206-2012; Witt, Richard/H-3560-2012; Yip, Kin/D-6860-2013; Xue, Liang/F-8077-2013; Voloshin, Sergei/I-4122-2013; Pandit, Yadav/I-2170-2013; Lednicky, Richard/K-4164-2013; Yang, Yanyun/B-9485-2014 OI Okorokov, Vitaly/0000-0002-7162-5345; Ma, Yu-Gang/0000-0002-0233-9900; Alekseev, Igor/0000-0003-3358-9635; Sumbera, Michal/0000-0002-0639-7323; Strikhanov, Mikhail/0000-0003-2586-0405; Xu, Wenqin/0000-0002-5976-4991; Huang, Bingchu/0000-0002-3253-3210; Nattrass, Christine/0000-0002-8768-6468; Derradi de Souza, Rafael/0000-0002-2084-7001; Suaide, Alexandre/0000-0003-2847-6556; Barnby, Lee/0000-0001-7357-9904; Takahashi, Jun/0000-0002-4091-1779; Peitzmann, Thomas/0000-0002-7116-899X; Yip, Kin/0000-0002-8576-4311; Xue, Liang/0000-0002-2321-9019; Pandit, Yadav/0000-0003-2809-7943; Yang, Yanyun/0000-0002-5982-1706 FU RHIC Operations Group and RCF at BNL; NERSC Center at LBNL; Open Science Grid consortium; Offices of NP and HEP within the US DOE Office of Science; US NSF; Sloan Foundation; DFG; CNRS/IN2P3; STFC; EPSRC of the UnitedKingdom; FAPESP CNPq of Brazil; Ministry of Ed. and Sci. of the Russian Federation; NNSFC; CAS; MoST; MoE of China; GA; MSMT of the Czech Republic; FOM and NWO of the Netherlands; DAE; DST; CSIR of India; Polish Ministry of Sci. and Higher Ed., Korea Research Foundation; Ministry of Sci., Ed. and Sports of the Rep. of Croatia; Russian Ministry of Sci. and Tech; RosAtom of Russia FX We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at LBNL, and the Open Science Grid consortium for providing resources and support. This work was supported in part by the Offices of NP and HEP within the US DOE Office of Science, the US NSF, the Sloan Foundation, the DFG cluster of excellence 'Origin and Structure of the Universe' of Germany, CNRS/IN2P3, STFC, and EPSRC of the UnitedKingdom, FAPESP CNPq of Brazil, Ministry of Ed. and Sci. of the Russian Federation, NNSFC, CAS, MoST, and MoE of China, GA and MSMT of the Czech Republic, FOM and NWO of the Netherlands, DAE, DST, and CSIR of India, Polish Ministry of Sci. and Higher Ed., Korea Research Foundation, Ministry of Sci., Ed. and Sports of the Rep. of Croatia, Russian Ministry of Sci. and Tech, and RosAtom of Russia. NR 45 TC 48 Z9 48 U1 0 U2 16 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 EI 1089-490X J9 PHYS REV C JI Phys. Rev. C PD AUG 30 PY 2010 VL 82 IS 2 AR 024912 DI 10.1103/PhysRevC.82.024912 PG 14 WC Physics, Nuclear SC Physics GA 644KY UT WOS:000281377300002 ER PT J AU Barger, V McCaskey, M Shaughnessy, G AF Barger, Vernon McCaskey, Mathew Shaughnessy, Gabe TI Complex scalar dark matter vis-a-vis CoGeNT, DAMA/LIBRA, and XENON100 SO PHYSICAL REVIEW D LA English DT Article ID HIGGS-BOSON; MODEL; ABUNDANCE; SEARCHES; DETECTOR; LEP AB The CoGeNT and DAMA/LIBRA experiments have found evidence for the spin-independent scattering from nuclei of a light dark matter (DM) particle, 7-12 GeV, which is not excluded by the XENON DM experiments. We show that this putative DM signal can be explained by a complex scalar singlet extension of the standard model (CSM), with a thermal cosmological DM density, and a Higgs sector that is consistent with LEP constraints. We make predictions for the masses, production, and decays of the two Higgs mass eigenstates and describe how the Higgs and DM particles can be discovered at the LHC. C1 [Barger, Vernon; McCaskey, Mathew] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. [Shaughnessy, Gabe] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. [Shaughnessy, Gabe] Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA. RP Barger, V (reprint author), Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA. FU U.S. Department of Energy Division of High Energy Physics [DE-FG02-95ER40896, DE-FG02-05ER41361, DE-FG02-08ER41531, DE-FG02-91ER40684, DE-AC02-06CH11357]; Wisconsin Alumni Research Foundation; National Science Foundation [PHY-0503584] FX We thank Juan Collar, Patrick Draper, Wai-Yee Keung, Jason Kumar, D. Hooper, Ian Low, Danny Marfatia, Uwe Oberlack, and Kathryn Zurek for helpful interactions and we thank Paul Langacker and Michael Ramsey-Musolf for earlier collaboration on the CSM. This work was supported in part by the U.S. Department of Energy Division of High Energy Physics under Grants No. DE-FG02-95ER40896, No. DE-FG02-05ER41361, No. DE-FG02-08ER41531, No. DE-FG02-91ER40684. and Contract No. DE-AC02-06CH11357, by the Wisconsin Alumni Research Foundation, and by the National Science Foundation Grant No. PHY-0503584. NR 89 TC 56 Z9 56 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD AUG 30 PY 2010 VL 82 IS 3 AR 035019 DI 10.1103/PhysRevD.82.035019 PG 15 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 644KN UT WOS:000281376100001 ER PT J AU Tseliakhovich, D Hirata, C Slosar, A AF Tseliakhovich, Dmitriy Hirata, Christopher Slosar, Anze TI Non-Gaussianity and large-scale structure in a two-field inflationary model SO PHYSICAL REVIEW D LA English DT Article ID DIGITAL-SKY-SURVEY; PRIMORDIAL NON-GAUSSIANITY; PROBE WMAP OBSERVATIONS; N-BODY SIMULATIONS; ANGULAR POWER SPECTRUM; LUMINOUS RED GALAXIES; DEPENDENT BIAS; ISOCURVATURE PERTURBATIONS; DENSITY PERTURBATIONS; MASS FUNCTION AB Single-field inflationary models predict nearly Gaussian initial conditions, and hence a detection of non-Gaussianity would be a signature of the more complex inflationary scenarios. In this paper we study the effect on the cosmic microwave background and on large-scale structure from primordial non-Gaussianity in a two-field inflationary model in which both the inflaton and curvaton contribute to the density perturbations. We show that in addition to the previously described enhancement of the galaxy bias on large scales, this setup results in large-scale stochasticity. We provide joint constraints on the local non-Gaussianity parameter (f) over tilde (NL) and the ratio xi of the amplitude of primordial perturbations due to the inflaton and curvaton using WMAP and Sloan Digital Sky Survey data. C1 [Tseliakhovich, Dmitriy; Hirata, Christopher] CALTECH, Pasadena, CA 91125 USA. [Slosar, Anze] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Tseliakhovich, D (reprint author), CALTECH, M-C 350-17, Pasadena, CA 91125 USA. FU U.S. Department of Energy [DE-FG03-92-ER40701, DE-AC02-98CH10886]; National Science Foundation [AST-0807337]; Alfred P. Sloan Foundation FX The authors are grateful to Shirley Ho for providing the large-scale structure samples used in this study. D.T. and C.H. are supported by the U.S. Department of Energy (DE-FG03-92-ER40701) and the National Science Foundation (AST-0807337). C.H. is supported by the Alfred P. Sloan Foundation. This work was supported in part by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886. NR 68 TC 26 Z9 26 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD AUG 30 PY 2010 VL 82 IS 4 AR 043531 DI 10.1103/PhysRevD.82.043531 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 644KO UT WOS:000281376200001 ER PT J AU Winkler, R Zulicke, U AF Winkler, R. Zuelicke, U. TI Time reversal of pseudo-spin 1/2 degrees of freedom SO PHYSICS LETTERS A LA English DT Article DE Foundations of quantum mechanics; Reversal of motion; Dynamical symmetry ID PHASE AB We show that pseudo-spin 1/2 degrees of freedom can be categorized in two types according to their behavior under time reversal. One type exhibits the properties of ordinary spin whose three Cartesian components are all odd under time reversal. For the second type, only one of the components is odd while the other two are even. We discuss several physical examples for this second type of pseudo-spin and highlight observable consequences that can be used to distinguish it from ordinary spin. (C) 2010 Elsevier B.V. All rights reserved. C1 [Winkler, R.; Zuelicke, U.] Massey Univ, Inst Fundamental Sci, Palmerston North 4442, New Zealand. [Winkler, R.; Zuelicke, U.] Massey Univ, MacDarmid Inst Adv Mat & Nanotechnol, Palmerston North 4442, New Zealand. [Winkler, R.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Winkler, R.] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. [Zuelicke, U.] Massey Univ, Ctr Theoret Chem & Phys, N Shore MSC, Auckland 0745, New Zealand. RP Zulicke, U (reprint author), Massey Univ, Inst Fundamental Sci, Private Bag 11 222, Palmerston North 4442, New Zealand. EM u.zuelicke@massey.ac.nz RI Zuelicke, Ulrich/B-1287-2009 OI Zuelicke, Ulrich/0000-0001-5055-3330 FU Marsden Fund Council, Government funding [MAU0702]; Kavli Institute for Theoretical Physics China at the Chinese Academy of Sciences; DOE BES [DE-AC02-06CH11357] FX This work is supported by the Marsden Fund Council (contract MAU0702) from Government funding, administered by the Royal Society of New Zealand. We thank the Kavli Institute for Theoretical Physics China at the Chinese Academy of Sciences for hospitality and support during the final stages of writing this article. Work at Argonne was supported by DOE BES under Contract No. DE-AC02-06CH11357. Discussions with M. Fortner, M. Jaaskelainen, A.H. MacDonald, and A.I. Signal are gratefully acknowledged. NR 25 TC 6 Z9 6 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 EI 1873-2429 J9 PHYS LETT A JI Phys. Lett. A PD AUG 30 PY 2010 VL 374 IS 39 BP 4003 EP 4006 DI 10.1016/j.physleta.2010.08.008 PG 4 WC Physics, Multidisciplinary SC Physics GA 651OV UT WOS:000281937900003 ER PT J AU Tobin, JG Yu, SW Morton, SA Waddill, GD Thompson, JDW Neal, JR Spangenberg, M Shen, TH AF Tobin, J. G. Yu, S. -W. Morton, S. A. Waddill, G. D. Thompson, J. D. W. Neal, J. R. Spangenberg, M. Shen, T. H. TI Highly polarized emission in spin resolved photoelectron spectroscopy of alpha-Fe(001)/GaAs(001) SO SURFACE SCIENCE LA English DT Article ID EPITAXIAL FE FILMS; BAND-STRUCTURE; PHOTOEMISSION; GAAS(001); TEMPERATURE; SURFACE AB Highly spin-polarized sources of electrons, Integrated into device design, remain of great interest to the spintronic and magneto-electronic device community Here, the growth of Fe upon GaAs(001) has been studied with photoelectron spectroscopy (PES), including Spin Resolved PES. Despite evidence of atomic level disorder such as intermixing, an over-layer with the spectroscopic signature of alpha-Fe(001), with a bcc real space ordering, Is obtained The results will be discussed in light of the possibility of using such films as a spin-polarized source in device applications (C) 2010 Elsevier B.V. All rights reserved C1 [Tobin, J. G.; Yu, S. -W.; Morton, S. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Morton, S. A.; Waddill, G. D.] Missouri Univ Sci & Technol, Rolla, MO USA. [Morton, S. A.] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Thompson, J. D. W.; Neal, J. R.; Spangenberg, M.; Shen, T. H.] Univ Salford, Joule Phys Lab, Salford M5 4WT, Lancs, England. RP Tobin, JG (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM Tobin1@LLNL.Gov RI Tobin, James/O-6953-2015 FU U.S. Department of Energy, National Nuclear Security Administration [DE-AC5207NA27344]; DOE Office of Science, Office of Basic Energy Science, Division of Materials Science and Engineering; EPSRC FX Lawrence Livermore National Laboratory is operated by Lawrence Livermore National Security, LLC, for the U.S. Department of Energy, National Nuclear Security Administration under Contract DE-AC5207NA27344. This work was supported by the DOE Office of Science, Office of Basic Energy Science, Division of Materials Science and Engineering. We would also like to thank J.A.D. Matthew, D. Greig, A.E. R. Malins, E.A. Seddon, and M. Hopkinson for their help with this project. JDWT and JRN thank EPSRC for its support. NR 31 TC 4 Z9 4 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD AUG 30 PY 2010 VL 604 IS 17-18 BP 1342 EP 1346 DI 10.1016/j.susc.2010.04.024 PG 5 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 627OJ UT WOS:000280048900006 ER PT J AU Henderson, MA AF Henderson, Michael A. TI Oxygen plasma activation of Cr(CO)(6) on alpha-Fe2O3(0001) SO SURFACE SCIENCE LA English DT Article DE Low energy electron diffraction (LEED); Thermal desorption spectroscopy; Secondary ion mass spectroscopy; Growth; Thermal desorption; Iron oxide; Chromium oxide; Chromium hexacarbonyl ID CHEMICAL-VAPOR-DEPOSITION; SCANNING-TUNNELING-MICROSCOPY; MOLECULAR-BEAM EPITAXY; HEMATITE 001 SURFACES; IRON-OXIDE SURFACES; THIN-FILMS; FLUIDIZED-BED; CHROMIUM HEXACARBONYL; CCL4 CHEMISTRY; ASSISTED MBE AB The chemistry of Cr(CO)(6) on the Fe3O4(111) surface termination of alpha-Fe2O3(0001) was explored using temperature programmed desorption (TPD), Auger electron spectroscopy (AES), static secondary ion mass spectrometry (SSIMS) and low energy electron diffraction (LEED) both with and without activation from an oxygen plasma source. No thermal decomposition of Cr(CO)(6) was detected on the surface in the absence of O-2 plasma treatment, with first layer molecules desorbing in TPD at 215 K from a close-packed overlayer. The interaction of first layer Cr(CO)(6) with the Fe3O4(111)-termination was weak, desorbing only similar to 30 K above the leading edge of the multilayer state. Activation of multilayer coverages of Cr(CO)(6) with the O-2 plasma source at 100 K resulted in complete conversion of the outer Cr(CO)(6) layers, presumably to a disordered Cr oxide film, with Cr(CO)(6) molecules near the surface left unaffected. Absence of CO or CO2 desorption states suggests that all carbonyl ligands are liberated for each Cr(CO)(6) molecule activated by the plasma. AES and SSIMS both show that O-2 plasma activation of Cr(CO)(6) results in a carbon-free surface (after desorption of unreacted Cr(CO)(6)). LEED, however, shows that the Cr oxide film was disordered at 600 K and likely O-terminated based on subsequent water TPD. Attempts to order the film at temperatures above 650 K resulted in dissolution of Cr into the alpha-Fe2O3(0001) crystal based on SSIMS, an observation linked to the Fe3O4(111) termination of the surface and not to the properties of alpha-Cr2O3/alpha-Fe2O3 corundum interface. Nevertheless, this study shows that O-2 plasma activation of Cr(CO)(6) is an effective means of depositing Cr oxide films on surfaces without accompanying carbon contamination. (C) 2010 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA. RP Henderson, MA (reprint author), Pacific NW Natl Lab, Inst Interfacial Catalysis, POB 999,MS K8-87, Richland, WA 99352 USA. EM ma.henderson@pnl.gov FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences; U.S. Department of Energy by the Battelle Memorial Institute [DEAC06-76RLO1830]; Office of Biological and Environmental Research FX The author thanks Scott Chambers for growth of the alpha-Cr2O3 (0001) film, and Steve Joyce for providing the natural alpha-Fe2O3(0001) single crystal. Work reported here was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences. Pacific Northwest National Laboratory is a multiprogram national laboratory operated for the U.S. Department of Energy by the Battelle Memorial Institute under contract DEAC06-76RLO1830. The experimental studies reported here were performed in the William R. Wiley Environmental Molecular Science Laboratory (EMSL), a Department of Energy user facility funded by the Office of Biological and Environmental Research. NR 78 TC 8 Z9 8 U1 1 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD AUG 30 PY 2010 VL 604 IS 17-18 BP 1502 EP 1508 DI 10.1016/j.susc.2010.05.015 PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 627OJ UT WOS:000280048900027 ER PT J AU Hanson, DE Martin, RL AF Hanson, David E. Martin, Richard L. TI Quantum chemistry and molecular dynamics studies of the entropic elasticity of localized molecular kinks in polyisoprene chains SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID RANDOM-COIL CONFIGURATIONS; POLYMER-CHAINS; RUBBER NETWORKS; EQUILIBRIUM; EXTENSION; RETRACTION; ENERGETICS; SYSTEMS AB We investigate the thermodynamic consequences of the distribution of rotational conformations of polyisoprene on the elastic response of a network chain. In contrast to the classical theory of rubber elasticity, which associates the elastic force with the distribution of end-to-end distances, we find that the distribution of chain contour lengths provides a simple mechanism for an elastic force. Entropic force constants were determined for small contour length extensions of chains constructed as a series of localized kinks, with each kink containing between one and five cis-1,4-isoprene units. The probability distributions for the kink end-to-end distances were computed by two methods: 1) by constructing a Boltzmann distribution from the lengths corresponding to the minimum energy dihedral rotational conformations, obtained by optimizing isoprene using first principles density functional theory, and (2) by sampling the trajectories of molecular dynamics simulations of an isolated molecule composed of five isoprene units. Analogous to the well-known tube model of elasticity, we make the assumption that, for small strains, the chain is constrained by its surrounding tube, and can only move, by a process of reptation, along the primitive path of the contour. Assuming that the chain entropy is Boltzmann's constant times the logarithm of the contour length distribution, we compute the tensile force constants for chain contour length extension as the change in entropy times the temperature. For a chain length typical of moderately crosslinked rubber networks (78 isoprene units), the force constants range between 0.004 and 0.033 N/m, depending on the kink size. For a cross-linked network, these force constants predict an initial tensile modulus of between 3 and 8 MPa, which is comparable to the experimental value of 1 MPa. This mechanism is also consistent with other thermodynamic phenomenology. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3475522] C1 [Hanson, David E.; Martin, Richard L.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Hanson, DE (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM deh@lanl.gov FU National Nuclear Security Administration of the U.S. Department of Energy [DE-AC52-06NA25396] FX We wish to thank Professor Tony Rappe and Dr. Enrique Batiste for their many helpful tutorials and suggestions and Dr. Neil Hensen for providing valuable assistance with the molecular dynamics simulation codes. This work was performed under the auspices of Los Alamos National Laboratory, which 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. NR 42 TC 4 Z9 4 U1 1 U2 8 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 28 PY 2010 VL 133 IS 8 AR 084903 DI 10.1063/1.3475522 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 649CE UT WOS:000281743800041 PM 20815590 ER PT J AU Liu, YC Huang, LP Gubbins, KE Nardelli, MB AF Liu, Yingchun Huang, Liping Gubbins, Keith E. Nardelli, Marco Buongiorno TI Dissociation of water over Ti-decorated C-60 SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; CORRELATION-ENERGY; HYDROGEN-STORAGE; SIMULATIONS; ADSORPTION; INTERFACES; SCALE AB Using first-principles calculations we have studied the reactions of water over Ti-decorated C-60 in order to assess the possibility of using this system as a catalyst for water dissociation. Our results show that a single water molecule dissociates exothermically with a small energy barrier on a single Ti atom adsorbed on C-60. After dissociation, both H+ and OH-ions bind strongly to the Ti atom, which serves as an effective reactive center that facilitates further water splitting. When a second water molecule is introduced, we observe the formation of a hydrogen molecule with a comparably small activation barrier. When the coverage of Ti on C-60 is increased, the formation of Ti dimer does not change the catalytic effect of Ti/C-60 complex very much. Our results provide fundamental insights into the mechanisms of water dissociation on such a prototypical nanostructure and suggest that Ti-decorated C-60 could be exploited as a catalyst for water splitting to generate hydrogen. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3469813] C1 [Liu, Yingchun; Gubbins, Keith E.] N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA. [Liu, Yingchun] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China. [Huang, Liping] Rensselaer Polytech Inst, Dept Mat Sci & Engn, Troy, NY 12180 USA. [Gubbins, Keith E.] N Carolina State Univ, CHiPS, Raleigh, NC 27695 USA. [Nardelli, Marco Buongiorno] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA. [Nardelli, Marco Buongiorno] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37381 USA. RP Liu, YC (reprint author), N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA. EM liuyingch@zju.edu.cn RI Buongiorno Nardelli, Marco/C-9089-2009; Huang, Liping/B-4412-2008 FU RPI start-up funds; American Chemical Society [48623-AC6]; National Natural Science Foundation of China [20876132]; National Natural Science Foundation of Zhejiang Province, China [Y4080131]; BES, U.S. DOE at ORNL [DE-FG02-98ER14847, DE-AC05-00OR22725]; UT-Battelle, LLC FX We thank S. Paul, J. Jiang, E. E. Santiso, and L. P. Yu for helpful discussions. This work was supported in part by RPI start-up funds, the Petroleum Research Fund of the American Chemical Society (Grant No. PRF#48623-AC6), the National Natural Science Foundation of China (Grant No. 20876132), the National Natural Science Foundation of Zhejiang Province, China (Grant No. Y4080131), and by BES, U.S. DOE at ORNL (Grant Nos. DE-FG02-98ER14847 and DE-AC05-00OR22725 with UT-Battelle, LLC). Computational time was provided at the San Diego Supercomputing Center by the U. S. National Science Foundation (Grant No. CHE080046N), NCSU-HPC, and NCCS-ORNL. NR 38 TC 4 Z9 4 U1 0 U2 15 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 28 PY 2010 VL 133 IS 8 AR 084510 DI 10.1063/1.3469813 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 649CE UT WOS:000281743800034 PM 20815583 ER PT J AU Peng, LJ Morris, JR Aga, RS AF Peng, Lu Jian Morris, James R. Aga, Rachel S. TI A parameter-free prediction of simulated crystal nucleation times in the Lennard-Jones system: From the steady-state nucleation to the transient time regime SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID INTERFACIAL FREE-ENERGY; ANISOTROPIC FREE-ENERGY; HARD-SPHERE LIQUID; MOLECULAR-DYNAMICS; HOMOGENEOUS NUCLEATION; MELT INTERFACE; MODEL SYSTEMS; KINETICS; BCC; CRYSTALLIZATION AB Large scale simulations of crystal nucleation from the liquid are performed using the Lennard-Jones potential to determine the time required for nucleation. By considering both transient and finite-size effects, we for the first time successfully predict the nucleation time without any parameter fitting in the Lennard-Jones system. All necessary parameters are derived from separate, equilibrium simulations. At small undercoolings, large system size effects are observed. The required system size is not only determined by the size of the critical nuclei, but also the characteristic spacing between them. Two distinct nucleation regions are predicted by theory and observed by the simulations, which are dominated by the transient time and the steady-state nucleation time, respectively. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3472301] C1 [Peng, Lu Jian; Morris, James R.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. [Morris, James R.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. [Aga, Rachel S.] Wright State Univ, Dept Chem, Dayton, OH 45435 USA. RP Peng, LJ (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. EM lpeng@utk.edu RI Morris, J/I-4452-2012 OI Morris, J/0000-0002-8464-9047 FU Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy; Office of Science of the U.S. Department of Energy FX We thank Takeshi Egami and Valentino Cooper for helpful comments. This research was sponsored by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy. NR 45 TC 8 Z9 8 U1 2 U2 13 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 28 PY 2010 VL 133 IS 8 AR 084505 DI 10.1063/1.3472301 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 649CE UT WOS:000281743800029 PM 20815578 ER PT J AU Piryatinski, A Velizhanin, KA AF Piryatinski, Andrei Velizhanin, Kirill A. TI An exciton scattering model for carrier multiplication in semiconductor nanocrystals: Theory SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID PBSE QUANTUM DOTS; IMPACT IONIZATION; SOLAR-CELLS; MULTIEXCITON GENERATION; ELECTRONIC EXCITATIONS; CHARGE-CARRIERS; COLLOIDAL PBSE; TIME-DOMAIN; AB-INITIO; EFFICIENCY AB The effect of carrier multiplication (CM) in semiconductor nanocrystals is systematically treated by employing an exciton scattering approach. Using projection operators, we reduce the Coulomb coupled multiexciton dynamics to scattering dynamics in the space spanning both single-and biexciton states. We derive a closed set of equations determining the scattering matrix elements. This allows us to interpret CM dynamics as a series of odd-order interband scattering events. Using the time-dependent density matrix formalism, we provide a rigorous description of the CM dynamics induced by a finite-time pump pulse. Within this approach, both processes of single-and biexciton photogeneration and the consequent population relaxation are treated on the same footing. This approach provides a framework for numerical calculations and for comparisons of the quantum efficiencies associated with each process. For applications, the limit of weak interband Coulomb coupling is considered. Finally, we demonstrate that three previously used theoretical models can be recovered as limiting cases of our exciton scattering model. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3474576] C1 [Piryatinski, Andrei; Velizhanin, Kirill A.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Div Theoret, Los Alamos, NM 87545 USA. RP Piryatinski, A (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. EM apiryat@lanl.gov RI Piryatinski, Andrei/B-5543-2009; Velizhanin, Kirill/C-4835-2008 FU Office of Basic Energy Sciences, U.S. Department of Energy; Los Alamos LDRD funds; CNLS FX This work was supported by the Office of Basic Energy Sciences, U.S. Department of Energy, and Los Alamos LDRD funds. We also acknowledge the support provided by CNLS. We wish to thank Victor I. Klimov, Vladimir Chernyak, Sergei Tretiak, Gary D. Doolen, and Darryl L. G. Smith for stimulating discussions and comments on the manuscript. NR 66 TC 25 Z9 25 U1 0 U2 14 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 28 PY 2010 VL 133 IS 8 AR 084508 DI 10.1063/1.3474576 PG 19 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 649CE UT WOS:000281743800032 PM 20815581 ER PT J AU Sheppard, D Henkelman, G von Lilienfeld, OA AF Sheppard, Daniel Henkelman, Graeme von Lilienfeld, O. Anatole TI Alchemical derivatives of reaction energetics SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; AUGMENTED-WAVE METHOD; CHEMICAL UNIVERSE; OXYGEN REDUCTION; ENERGY; MOLECULES; METAL AB Based on molecular grand canonical ensemble density functional theory, we present a theoretical description of how reaction barriers and enthalpies change as atoms in the system are subjected to alchemical transformations, from one element into another. The change in the energy barrier for the umbrella inversion of ammonia is calculated along an alchemical path in which the molecule is transformed into water, and the change in the enthalpy of protonation for methane is calculated as the molecule is transformed into a neon atom via ammonia, water, and hydrogen fluoride. Alchemical derivatives are calculated analytically from the electrostatic potential in the unperturbed system, and compared to numerical derivatives calculated with finite difference interpolation of the pseudopotentials for the atoms being transformed. Good agreement is found between the analytical and numerical derivatives. Alchemical derivatives are also shown to be predictive for integer changes in atomic numbers for oxygen binding to a 79 atom palladium nanoparticle, illustrating their potential use in gradient-based optimization algorithms for the rational design of catalysts. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3474502] C1 [Sheppard, Daniel; Henkelman, Graeme] Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA. [Sheppard, Daniel; Henkelman, Graeme] Univ Texas Austin, Inst Computat Engn & Sci, Austin, TX 78712 USA. [von Lilienfeld, O. Anatole] Sandia Natl Labs, Dept Multiscale Dynam Mat Modeling, Albuquerque, NM 87185 USA. RP Sheppard, D (reprint author), Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA. EM henkelman@mail.utexas.edu; oavonli@sandia.gov RI von Lilienfeld, O. Anatole/D-8529-2011; Henkelman, Graeme/A-9301-2008 OI Henkelman, Graeme/0000-0002-0336-7153 FU National Science Foundation [CHE-0645497]; Department of Energy [DE-FG02-09ER16090]; Welch Foundation [F-1601]; Sandia National Laboratory (SNL) [120209]; United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX This work was funded by the National Science Foundation (Grant No. CHE-0645497), the Department of Energy under Contract No. DE-FG02-09ER16090, and the Welch Foundation (F-1601). D.S. is grateful for support from the Sandia National Laboratory (SNL) summer student internship program at the Computer Science Research Institute. O.A.vL. acknowledges support from SNL Truman Program Laboratory Directed Research Development Project No. 120209. Sandia is a multiprogram laboratory operated by the Sandia Corporation, a Lockheed Martin Co., for the United States Department of Energy's National Nuclear Security Administration under Contract No. DE-AC04-94AL85000. We gratefully acknowledge the Texas Advanced Computing Center for computational resources. NR 37 TC 21 Z9 21 U1 1 U2 13 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 28 PY 2010 VL 133 IS 8 AR 084104 DI 10.1063/1.3474502 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 649CE UT WOS:000281743800008 PM 20815557 ER PT J AU Velizhanin, KA Thoss, M Wang, HB AF Velizhanin, Kirill A. Thoss, Michael Wang, Haobin TI Meir-Wingreen formula for heat transport in a spin-boson nanojunction model SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID NANOSCALE CONDUCTORS; MOLECULAR JUNCTIONS; ELECTRON-TRANSFER; SYSTEMS; APPROXIMATIONS AB An analog of the Meir-Wingreen formula for the steady-state heat current through a model molecular junction is derived. The expression relates the heat current to correlation functions of operators acting only on the degrees of freedom of the molecular junction. As a result, the macroscopic heat reservoirs are not treated explicitly. This allows one to exploit methods based on a reduced description of the dynamics of a relatively small part of the overall system to evaluate the heat current through a molecular junction. The derived expression is applied to calculate the steady-state heat current in the weak coupling limit, where the Redfield theory is used to describe the reduced dynamics of the molecular junction. The results are compared with those of previously developed approximate and numerically exact methods. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3483127] C1 [Velizhanin, Kirill A.] Los Alamos Natl Lab, Div Theoret, CNLS, Los Alamos, NM 87545 USA. [Velizhanin, Kirill A.; Wang, Haobin] New Mexico State Univ, Dept Chem & Biochem, Las Cruces, NM 88003 USA. [Thoss, Michael] Univ Erlangen Nurnberg, Inst Theoret Phys, D-91058 Erlangen, Germany. [Thoss, Michael] Univ Erlangen Nurnberg, Zentrum Mol Mat, D-91058 Erlangen, Germany. RP Velizhanin, KA (reprint author), Los Alamos Natl Lab, Div Theoret, CNLS, T-4, Los Alamos, NM 87545 USA. EM kirill@lanl.gov; whb@intrepid.nmsu.edu RI Wang, Haobin/E-1208-2011; Thoss, Michael/C-5976-2013; Velizhanin, Kirill/C-4835-2008 FU National Science Foundation (NSF) [CHE-0348956]; Deutsche Froschungsgemeinschaft (DFG) through the DFG-Cluster of Excellence Munich-Centre for Advanced Photonics; Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]; Center for Nonlinear Studies (CNLS), LANL FX K.A.V would like to thank Dima Mozyrsky for helpful discussions on the diagrammatic technique. M. T. thanks Rainer Hartle for discussions on the subject of this work. This work has been supported by the National Science Foundation (NSF) CAREER Award No. CHE-0348956 (H.W. and K.A.V), the Deutsche Froschungsgemeinschaft (DFG) through the DFG-Cluster of Excellence Munich-Centre for Advanced Photonics (M.T.), and used resources of the National Energy Research Scientific Computing Center (NERSC), which was supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. K. A. V. was also supported by the Center for Nonlinear Studies (CNLS), LANL. NR 36 TC 19 Z9 19 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 28 PY 2010 VL 133 IS 8 AR 084503 DI 10.1063/1.3483127 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 649CE UT WOS:000281743800027 PM 20815576 ER PT J AU Ebihara, Y Sakanoi, T Asamura, K Hirahara, M Thomsen, MF AF Ebihara, Y. Sakanoi, T. Asamura, K. Hirahara, M. Thomsen, M. F. TI Reimei observation of highly structured auroras caused by nonaccelerated electrons SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID WHISTLER-MODE WAVES; GEOSYNCHRONOUS ORBIT; INTERCHANGE INSTABILITY; INNER MAGNETOSPHERE; INDEX SATELLITE; ARC THICKNESSES; DIFFUSE AURORA; FINE-STRUCTURE; DETACHED ARCS; TROUGH REGION AB [1] We present observations of highly structured, thin auroras cased by precipitation of nonaccelerated electrons on the basis of optical and particle measurements performed by the Reimei satellite near the equatorward edge of the main auroral oval. The aurora has the following characteristics: (1) A full width at half maximum (FWHM) value is as low as only similar to 1.8 km from optical measurements, and similar to 0.6 km from particle measurements at the ionospheric altitude, which is much smaller than previously determined. (2) The FWHM value of 0.6 km corresponds to 9 km in the equatorial plane, which is similar to 10 times smaller than the gyroradius of typical protons trapped in the near-Earth plasma sheet. (3) At high energies greater than similar to 1 keV, the velocity distribution function of precipitating electrons is comparable to that of the trapped ones and does not demonstrate any plateau or positive gradient in the distribution. (4) The aurora was observed in geomagnetically quiet condition. (5) A geosynchronous satellite observed a significant increase in the plasma pressure of hot electrons in comparison with that of hot ions. The structuring of the aurora may be attributed to scattering processes of hot electrons. If this were the case, hot electrons would be scattered by whistler mode chorus, or electrostatic electron cyclotron harmonic waves, and the structured aurora would be a visual manifestation of the highly structured, cold plasma that determines the growth of the waves scattering the hot electrons. C1 [Ebihara, Y.] Nagoya Univ, Inst Adv Res, Nagoya, Aichi 4648601, Japan. [Sakanoi, T.] Tohoku Univ, Grad Sch Sci, Sendai, Miyagi 9808578, Japan. [Asamura, K.] ISAS JAXA, Sagamihara, Kanagawa 2298510, Japan. [Hirahara, M.] Univ Tokyo, Dept Earth & Planetary Sci, Tokyo 1130033, Japan. [Thomsen, M. F.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Ebihara, Y (reprint author), Nagoya Univ, Inst Adv Res, Nagoya, Aichi 4648601, Japan. EM ebihara@stelab.nagoya-u.ac.jp RI Ebihara, Yusuke/D-1638-2013; OI Ebihara, Yusuke/0000-0002-2293-1557; Sakanoi, Takeshi/0000-0002-7146-9020 FU Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan FX We thank all the members of the Reimei team for ensuring its successful operation. We appreciate R. A. Wolf, Y. Miyoshi, M.-C. Fok, and A. Glocer for fruitful comments and suggestion, and G. Reeves for providing us particle data from LANL/SOPA. The OMNI data were obtained from the GSFC/SPDF OMNIWeb interface at http://omniweb.gsfc.nasa.gov/. The study by Y. Ebihara was supported by the Program for Improvement of Research Environment for Young Researchers from the Special Coordination Funds for Promoting Science and Technology (SCF) commissioned by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan. NR 53 TC 6 Z9 6 U1 0 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD AUG 27 PY 2010 VL 115 AR A08320 DI 10.1029/2009JA015009 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 644YG UT WOS:000281417500003 ER PT J AU Tao, LA McCurdy, CW Rescigno, TN AF Tao, Liang McCurdy, C. W. Rescigno, T. N. TI Grid-based methods for diatomic quantum scattering problems. III. Double photoionization of molecular hydrogen in prolate spheroidal coordinates SO PHYSICAL REVIEW A LA English DT Article ID COULOMB 2-CENTER PROBLEM; CONTINUUM WAVE-FUNCTIONS; BREAKUP; STATE AB Our previously developed finite-element discrete-variable representation in prolate spheroidal coordinates is extended to two-electron systems with a study of double ionization of H(2) with fixed nuclei. Particular attention is paid to the development of fast and accurate methods for treating the electron-electron interaction. The use of exterior complex scaling in the implementation offers a simple way of enforcing Coulomb boundary conditions for the electronic double continuum. While the angular distributions calculated in this study are found to be completely consistent with our earlier treatments that employed single-center expansions in spherical coordinates, we find that the magnitude of the integrated cross sections are sensitive to small changes in the initial-state wave function. The present formulation offers significant advantages with respect to convergence and efficiency and opens the way to calculations on more complicated diatomic targets. C1 [Tao, Liang; McCurdy, C. W.; Rescigno, T. N.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [McCurdy, C. W.] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. [McCurdy, C. W.] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. RP Tao, LA (reprint author), Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA. FU US Department of Energy by the University of California Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; US Department of Energy Office of Basic Energy Sciences, Division of Chemical Sciences; National Science Foundation [PHY-0604628] FX This work was performed under the auspices of the US Department of Energy by the University of California Lawrence Berkeley National Laboratory under Contract No. DE-AC02-05CH11231 and was supported by the US Department of Energy Office of Basic Energy Sciences, Division of Chemical Sciences. CWM acknowledges support from the National Science Foundation (Grant No. PHY-0604628). NR 28 TC 32 Z9 32 U1 1 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD AUG 27 PY 2010 VL 82 IS 2 AR 023423 DI 10.1103/PhysRevA.82.023423 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 643KE UT WOS:000281294500007 ER PT J AU Clavero, C Bode, M Bihlmayer, G Blugel, S Lukaszew, RA AF Clavero, C. Bode, M. Bihlmayer, G. Bluegel, S. Lukaszew, R. A. TI Island-assisted interface alloying and magnetic polarization at submonolayer V/Cr(001) interfaces SO PHYSICAL REVIEW B LA English DT Article ID SCANNING-TUNNELING-MICROSCOPY; SN-119 MOSSBAUER-SPECTROSCOPY; CR(001) SURFACE; THIN-FILMS; FE; CR; MULTILAYERS; IMPURITIES; V(001); STATES AB Island-assisted interface alloying was observed during submonolayer deposition on Cr(001) substrates at 525 K. Scanning tunneling spectroscopy suggests atomic interchange at the center of the islands during the early stages of growth, giving rise to a Cr core in the center of the island and a gradually increasing V concentration toward the island rim. The existence of a VCr alloy with equiatomic composition is concluded by comparing tunneling spectra measured at the island rim with density-functional theory calculations. Coalescence of the initial islands gives rise to inhomogeneous alloying at monolayer coverage. Antiferromagnetic coupling between the islands and the Cr(001) substrate is found for coverages up to 0.50 atomic layers. At higher coverages, no magnetic contrast was observed. C1 [Clavero, C.; Lukaszew, R. A.] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA. [Bode, M.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [Bihlmayer, G.; Bluegel, S.] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany. [Bihlmayer, G.; Bluegel, S.] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany. [Lukaszew, R. A.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA. RP Clavero, C (reprint author), Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA. EM cclavero@wm.edu RI Bihlmayer, Gustav/G-5279-2013; Clavero, Cesar/C-4391-2008; Blugel, Stefan/J-8323-2013; Bode, Matthias/S-3249-2016 OI Bihlmayer, Gustav/0000-0002-6615-1122; Clavero, Cesar/0000-0001-6665-3141; Blugel, Stefan/0000-0001-9987-4733; Bode, Matthias/0000-0001-7514-5560 FU NSF-DMR [0605661]; U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]; Research Corporation FX This work was partially supported by NSF-DMR under Grant No. 0605661, and the Research Corporation. Use of the Center for Nanoscale Materials at Argonne National Laboratory was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. NR 28 TC 2 Z9 2 U1 1 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 27 PY 2010 VL 82 IS 8 AR 085445 DI 10.1103/PhysRevB.82.085445 PG 4 WC Physics, Condensed Matter SC Physics GA 643KL UT WOS:000281295200007 ER PT J AU Rho, H Klein, MV Canfield, PC AF Rho, Heesuk Klein, Miles V. Canfield, Paul C. TI Crystal-field excitations and spin-phonon interactions in DyNi2B2C: Raman scattering study SO PHYSICAL REVIEW B LA English DT Article ID TEMPERATURE-DEPENDENCE; MAGNETIC-PROPERTIES; SPECTROSCOPY; SUPERCONDUCTIVITY; HONI2B2C; YNI2B2C; PR2CUO4; MODES AB We report polarized Raman results of magnetic superconductor DyNi2B2C (T-c = 6.2 K, T-N = 10.3 K) to explore crystal-field (CF) excitations and spin-phonon interactions. In addition to the Ni-B-1g phonon mode at 199 cm(-1), we observed additional Raman modes at 124, 151, and 221 cm(-1). By careful analysis of the temperature evolution of these modes, we attribute the 124 cm-1 excitation to a CF transition. The 151 and 221 cm(-1) modes correspond to zone-folded phonons because they are completely quenched for T > T-N. With increasing temperature across T-N, the 124 cm(-1) excitation diminishes rapidly in intensity and, interestingly, an additional mode appears at 119 cm(-1). This excitation grows in intensity with increasing temperature toward 50 K and gradually decreases with increasing temperature further. We attribute the 119 cm(-1) excitation to an excited CF transition from a low-lying CF level at 5 cm(-1) to the higher CF level at 124 cm(-1). Anomalous temperature-dependent behavior of the Ni-B-1g phonon mode was observed in peak energy and in spectral width, i.e., both the phonon energy and the linewidth are enhanced in the vicinity of T-N, suggesting the presence of strong spin-phonon interactions near the antiferromagnetic ordering temperature in DyNi2B2C. C1 [Rho, Heesuk] Chonbuk Natl Univ, Res Inst Phys & Chem, Dept Phys, Jeonju 561756, South Korea. [Rho, Heesuk; Klein, Miles V.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA. [Rho, Heesuk; Klein, Miles V.] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA. [Canfield, Paul C.] Iowa State Univ, Ames Lab, Dept Phys & Astron, Ames, IA 50011 USA. RP Rho, H (reprint author), Chonbuk Natl Univ, Res Inst Phys & Chem, Dept Phys, Jeonju 561756, South Korea. EM rho@chonbuk.ac.kr RI Canfield, Paul/H-2698-2014 FU MEST [2009-0083859]; Department of Energy, Basic Energy Sciences [DE-AC02-07CH11358] FX H. R. acknowledges financial support by Mid-career Researcher Program through NRF grant funded by the MEST (Grant No. 2009-0083859). Work at the Ames Laboratory was supported by the Department of Energy, Basic Energy Sciences under Contract No. DE-AC02-07CH11358. NR 27 TC 0 Z9 0 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 27 PY 2010 VL 82 IS 6 AR 064423 DI 10.1103/PhysRevB.82.064423 PG 5 WC Physics, Condensed Matter SC Physics GA 643KH UT WOS:000281294800003 ER PT J AU Wu, SW Ho, W AF Wu, S. W. Ho, W. TI Two-photon-induced hot-electron transfer to a single molecule in a scanning tunneling microscope SO PHYSICAL REVIEW B LA English DT Article ID PROBE MICROSCOPY; SPECTROSCOPY; DYNAMICS; FIELD; EXCITATION; TRANSPORT; JUNCTIONS; PHOTONS AB The junction of a scanning tunneling microscope (STM) operating in the tunneling regime was irradiated with femtosecond laser pulses. A photoexcited hot electron in the STM tip resonantly tunnels into an excited state of a single molecule on the surface, converting it from the neutral to the anion. The electron-transfer rate depends quadratically on the incident laser power, suggesting a two-photon excitation process. This nonlinear optical process is further confirmed by the polarization measurement. Spatial dependence of the electron-transfer rate exhibits atomic-scale variations. A two-pulse correlation experiment reveals the ultrafast dynamic nature of photoinduced charging process in the STM junction. Results from these experiments are important for understanding photoinduced interfacial charge transfer in many nanoscale inorganic-organic structures. C1 Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. RP Wu, SW (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA. EM wilsonho@uci.edu RI Wu, Shiwei/F-4542-2010 OI Wu, Shiwei/0000-0001-9838-9066 FU Chemical Science, Geo- and Bioscience Division, Office of Science, U.S. Department of Energy [DE-FG02-04ER1595] FX This material is based on work supported by the Chemical Science, Geo- and Bioscience Division, Office of Science, U.S. Department of Energy, under Grant No. DE-FG02-04ER1595. NR 40 TC 24 Z9 24 U1 4 U2 50 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 27 PY 2010 VL 82 IS 8 AR 085444 DI 10.1103/PhysRevB.82.085444 PG 8 WC Physics, Condensed Matter SC Physics GA 643KL UT WOS:000281295200006 ER PT J AU Chanowitz, MS AF Chanowitz, Michael S. TI Higgs mass constraints on a fourth family: Upper and lower limits on CKM mixing SO PHYSICAL REVIEW D LA English DT Article ID ELECTROWEAK SYMMETRY-BREAKING; ULTRA HEAVY FERMIONS; WEAK-INTERACTIONS; STANDARD MODEL; GENERATION; QUARK; PHASE AB Limits on the Higgs boson mass restrict Cabibbo-Kobayashi-Maskawa quark-mixing matrix (CKM) mixing of a possible fourth family beyond the constraints previously obtained from precision electroweak data alone. Existing experimental and theoretical bounds on m(H) already significantly restrict the allowed parameter space. Zero CKM mixing is excluded and mixing of order theta(Cabbibo) is allowed. Upper and lower limits on 3-4 CKM mixing are exhibited as a function of m(H). We use the default inputs of the electroweak working group and also explore the sensitivity of both the three and four family fits to alternative inputs. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. RP Chanowitz, MS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. FU Office of Science, Office of High Energy and Nuclear Physics, Division of High Energy Physics of the U.S. Department of Energy [DE-AC02-05CH11231] FX I would like to thank Jens Erler for providing detailed information concerning the fits in [16] and Zoltan Ligeti for helpful comments. This work was supported in part by the Office of Science, Office of High Energy and Nuclear Physics, Division of High Energy Physics of the U.S. Department of Energy under Contract DE-AC02-05CH11231 NR 75 TC 28 Z9 28 U1 1 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD AUG 27 PY 2010 VL 82 IS 3 AR 035018 DI 10.1103/PhysRevD.82.035018 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 643KP UT WOS:000281295600002 ER PT J AU Speck, T Reister, E Seifert, U AF Speck, Thomas Reister, Ellen Seifert, Udo TI Specific adhesion of membranes: Mapping to an effective bond lattice gas SO PHYSICAL REVIEW E LA English DT Article ID FLUID MEMBRANES; UNBINDING TRANSITIONS; SUPPORTED MEMBRANES; MODELS AB We theoretically consider specific adhesion of a fluctuating membrane to a hard substrate via the formation of bonds between receptors attached to the substrate and ligands in the membrane. By integrating out the degrees of freedom of the membrane shape, we show that in the biologically relevant limit specific adhesion is well described by a lattice gas model, where lattice sites correspond to bond sites. We derive an explicit expression for the effective bond interactions induced by the thermal undulations of the membrane. Furthermore, we compare kinetic Monte Carlo simulations for our lattice gas model with full dynamic simulations that take into account both the shape fluctuations of the membrane and reactions between receptors and ligands at bond sites. We demonstrate that an appropriate mapping of the height dependent binding and unbinding rates in the full scheme to rates in the lattice gas model leads to good agreement. C1 [Speck, Thomas] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Speck, Thomas] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. [Reister, Ellen; Seifert, Udo] Univ Stuttgart, Inst Theoret Phys 2, D-70550 Stuttgart, Germany. RP Speck, T (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Speck, Thomas/F-2624-2012; Physics, Komet/C-9533-2016 OI Speck, Thomas/0000-0002-6357-1180; FU Alexander von Humboldt foundation; Helios Solar Energy Research Center; Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-05CH11231]; DFG [SE1119/2] FX T. S. gratefully acknowledges financial support by the Alexander von Humboldt foundation and the Helios Solar Energy Research Center which 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. U.S. acknowledges financial support by the DFG under Grant No. SE1119/2. U.S. and E. R. thank A.-S. Smith for many stimulating discussions and an ongoing fruitful collaboration. NR 35 TC 13 Z9 13 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD AUG 27 PY 2010 VL 82 IS 2 AR 021923 DI 10.1103/PhysRevE.82.021923 PN 1 PG 8 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 643KT UT WOS:000281296000007 PM 20866853 ER PT J AU Mynick, HE Pomphrey, N Xanthopoulos, P AF Mynick, H. E. Pomphrey, N. Xanthopoulos, P. TI Optimizing Stellarators for Turbulent Transport SO PHYSICAL REVIEW LETTERS LA English DT Article ID QUASI-AXISYMMETRICAL STELLARATOR AB Up to now, the term "transport-optimized" stellarators has meant optimized to minimize neoclassical transport, while the task of also mitigating turbulent transport, usually the dominant transport channel in such designs, has not been addressed, due to the complexity of plasma turbulence in stellarators. Here, we demonstrate that stellarators can also be designed to mitigate their turbulent transport, by making use of two powerful numerical tools not available until recently, namely, gyrokinetic codes valid for 3D nonlinear simulations and stellarator optimization codes. Two initial proof-of-principle configurations are obtained, reducing the level of ion temperature gradient turbulent transport from the National Compact Stellarator Experiment baseline design by a factor of 2-2.5. C1 [Mynick, H. E.; Pomphrey, N.] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. [Xanthopoulos, P.] Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany. RP Mynick, HE (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI pomphrey, neil/G-4405-2010 FU U.S. Department of Energy [DE-AC02-09CH11466] FX The authors are grateful to A. Boozer, L. Maingi, G. Rewoldt, and E. Valeo for valuable discussions. This work supported by U.S. Department of Energy Contract No. DE-AC02-09CH11466. Some of the GENE simulations were performed at the Julich Supercomputing Center (JSC). NR 18 TC 21 Z9 21 U1 0 U2 4 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 AUG 27 PY 2010 VL 105 IS 9 AR 095004 DI 10.1103/PhysRevLett.105.095004 PG 4 WC Physics, Multidisciplinary SC Physics GA 643KX UT WOS:000281296400004 PM 20868170 ER PT J AU Xiao, D Yao, YG Feng, WX Wen, J Zhu, WG Chen, XQ Stocks, GM Zhang, ZY AF Xiao, Di Yao, Yugui Feng, Wanxiang Wen, Jun Zhu, Wenguang Chen, Xing-Qiu Stocks, G. Malcolm Zhang, Zhenyu TI Half-Heusler Compounds as a New Class of Three-Dimensional Topological Insulators SO PHYSICAL REVIEW LETTERS LA English DT Article ID HGTE QUANTUM-WELLS; TRANSPORT-PROPERTIES; PHASE; POLARIZATION; TRANSITION; LABIPT; BI2TE3 AB Using first-principles calculations within density functional theory, we explore the feasibility of converting ternary half-Heusler compounds into a new class of three-dimensional topological insulators (3DTI). We demonstrate that the electronic structure of unstrained LaPtBi as a prototype system exhibits a distinct band-inversion feature. The 3DTI phase is realized by applying a uniaxial strain along the [001] direction, which opens a band gap while preserving the inverted band order. A definitive proof of the strained LaPtBi as a 3DTI is provided by directly calculating the topological Z(2) invariants in systems without inversion symmetry. We discuss the implications of the present study to other half-Heusler compounds as 3DTI, which, together with the magnetic and superconducting properties of these materials, may provide a rich platform for novel quantum phenomena. C1 [Xiao, Di; Zhu, Wenguang; Chen, Xing-Qiu; Stocks, G. Malcolm; Zhang, Zhenyu] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. [Yao, Yugui; Feng, Wanxiang] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. [Yao, Yugui; Feng, Wanxiang] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. [Yao, Yugui; Wen, Jun] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA. [Zhu, Wenguang; Zhang, Zhenyu] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Zhang, Zhenyu] Univ Sci & Technol China, ICQD, Hefei 230026, Anhui, Peoples R China. RP Xiao, D (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RI Zhu, Wenguang/F-4224-2011; Zhang, Jian-Min/A-7757-2012; Yao, Yugui/A-8411-2012; Xiao, Di/B-1830-2008; Feng, Wanxiang/P-7000-2014; Stocks, George Malcollm/Q-1251-2016 OI Zhu, Wenguang/0000-0003-0819-595X; Xiao, Di/0000-0003-0165-6848; Feng, Wanxiang/0000-0001-8488-1949; Stocks, George Malcollm/0000-0002-9013-260X FU Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy; NSF of China [10674163, 10974231]; MOST of China [2006CB921300, 2007CB925000]; Welch Foundation [F-1255] FX D.X. acknowledges useful discussions with Ying Ran. This work was supported by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy, NSF of China (10674163, 10974231), the MOST Project of China (2006CB921300, 2007CB925000), and by the Welch Foundation (F-1255). NR 36 TC 155 Z9 158 U1 13 U2 116 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 27 PY 2010 VL 105 IS 9 AR 096404 DI 10.1103/PhysRevLett.105.096404 PG 4 WC Physics, Multidisciplinary SC Physics GA 643KX UT WOS:000281296400009 PM 20868181 ER PT J AU Sharp, ZD Shearer, CK McKeegan, KD Barnes, JD Wang, YQ AF Sharp, Z. D. Shearer, C. K. McKeegan, K. D. Barnes, J. D. Wang, Y. Q. TI The Chlorine Isotope Composition of the Moon and Implications for an Anhydrous Mantle SO SCIENCE LA English DT Article ID FORMING GIANT IMPACT; ORIGIN; EARTHS; WATER AB Arguably, the most striking geochemical distinction between Earth and the Moon has been the virtual lack of water (hydrogen) in the latter. This conclusion was recently challenged on the basis of geochemical data from lunar materials that suggest that the Moon's water content might be far higher than previously believed. We measured the chlorine isotope composition of Apollo basalts and glasses and found that the range of isotopic values [from -1 to +24 per mil (parts per thousand) versus standard mean ocean chloride] is 25 times the range for Earth. The huge isotopic spread is explained by volatilization of metal halides during basalt eruption-a process that could only occur if the Moon had hydrogen concentrations lower than those of Earth by a factor of similar to 10(4) to 10(5), implying that the lunar interior is essentially anhydrous. C1 [Sharp, Z. D.; Shearer, C. K.] Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87122 USA. [Shearer, C. K.] Univ New Mexico, Inst Meteorit, Albuquerque, NM 87122 USA. [McKeegan, K. D.] Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA. [Barnes, J. D.] Univ Texas Austin, Dept Geol Sci, Austin, TX 78712 USA. [Wang, Y. Q.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Sharp, ZD (reprint author), Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87122 USA. EM zsharp@unm.edu RI Barnes, Jaime/B-5454-2011; McKeegan, Kevin/A-4107-2008; UCLA, SIMS/A-1459-2011 OI McKeegan, Kevin/0000-0002-1827-729X; FU NASA [07-SSO07-0077, NNX08AY786]; NSF; DOE Office of Basic Energy Sciences FX Supported by NASA Origins grant 07-SSO07-0077 (Z.D.S.), NASA LASER grant NNX08AY786 (C.K.S.), and a NASA Cosmochemistry grant (K.D.M.). The UCLA ion microprobe facility is partially supported by a grant from the NSF Instrumentation and Facilities Program. We thank lunar curator G. Lofgren and staff of the Johnson Space Center, Houston. P. Burger provided imaging and quantitative elemental analyses of apatite. The Ion Beam Materials Laboratory at Los Alamos is partially supported by DOE Office of Basic Energy Sciences programs. NR 32 TC 73 Z9 75 U1 3 U2 38 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD AUG 27 PY 2010 VL 329 IS 5995 BP 1050 EP 1053 DI 10.1126/science.1192606 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 642WZ UT WOS:000281253500033 PM 20688980 ER PT J AU Almer, JD Stock, SR AF Almer, J. D. Stock, S. R. TI High energy X-ray scattering quantification of in situ-loading-related strain gradients spanning the dentinoenamel junction (DEJ) in bovine tooth specimens SO JOURNAL OF BIOMECHANICS LA English DT Article DE High energy X-ray scattering; Tooth; Dentinoenamel junction (DEJ); Dentin; Enamel; Synchrotron X-radiation; Strain mapping ID DENTIN-ENAMEL JUNCTION; MECHANICAL-PROPERTIES; HUMAN TEETH; CORTICAL BONE; SYNCHROTRON MICROTOMOGRAPHY; COLLAGEN PHASES; YOUNGS MODULUS; DIFFRACTION; TEXTURE; MINERALIZATION AB High energy X-ray scattering (80.7 key photons) at station 1-ID of the Advanced Photon Source quantified internal strains as a function of applied stress in mature bovine tooth. These strains were mapped from dentin through the dentinoenamel junction (DEJ) into enamel as a function of applied compressive stress in two small parallelepiped specimens. One specimen was loaded perpendicular to the DEJ and the second parallel to the DEJ. Internal strains in enamel and dentin increased and, as expected from the relative values of the Young's modulus, the observed strains were much higher in dentin than in enamel. Large strain gradients were observed across the DEJ, and the data suggest that the mantle dentin-DEJ-aprismatic enamel structure may shield the near-surface volume of the enamel from large strains. In the enamel, drops in internal strain for applied stresses above 40 MPa also suggest that this structure had cracked. (C) 2010 Elsevier Ltd. All rights reserved. C1 [Stock, S. R.] Northwestern Univ, Dept Mol Pharmacol & Biol Chem, Feinberg Sch Med, Chicago, IL 60611 USA. [Almer, J. D.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Stock, SR (reprint author), Northwestern Univ, Dept Mol Pharmacol & Biol Chem, Feinberg Sch Med, Mail Code S215,303 E Chicago Ave, Chicago, IL 60611 USA. EM s-stock@northwestern.edu FU U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX The authors thank A.E.M. Vieira, A.C.B. Delbem, and M.L. Cannon for providing the specimens, A. Deymier for assistance with the X-ray scattering experiments, and A. Veis for helpful discussion of dentin and enamel microstructures. Use of 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 59 TC 17 Z9 17 U1 1 U2 10 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0021-9290 J9 J BIOMECH JI J. Biomech. PD AUG 26 PY 2010 VL 43 IS 12 BP 2294 EP 2300 DI 10.1016/j.jbiomech.2010.04.037 PG 7 WC Biophysics; Engineering, Biomedical SC Biophysics; Engineering GA 653QR UT WOS:000282112300008 PM 20541209 ER PT J AU Xantheas, SS Gordon, MS AF Xantheas, Sotiris S. Gordon, Mark S. TI Tribute to Klaus Ruedenberg SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Biographical-Item C1 [Xantheas, Sotiris S.] Pacific NW Natl Lab, Richland, WA 99352 USA. [Gordon, Mark S.] Iowa State Univ, Ames, IA 50011 USA. RP Xantheas, SS (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. RI Xantheas, Sotiris/L-1239-2015 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 26 PY 2010 VL 114 IS 33 BP 8489 EP 8489 DI 10.1021/jp105845b PG 1 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 639GW UT WOS:000280962400001 PM 20718499 ER PT J AU Bytautas, L Ruedenberg, K AF Bytautas, Laimutis Ruedenberg, Klaus TI The Range of Electron Correlation between Localized Molecular Orbitals. A Full Configuration Interaction Analysis for the NCCN Molecule SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID COUPLED-CLUSTER THEORY; CORRELATION-ENERGY EXTRAPOLATION; MATRIX RENORMALIZATION-GROUP; BETHE-GOLDSTONE EQUATIONS; FORMULA PERIODIC-TABLE; PERTURBATION-THEORY; WAVE-FUNCTIONS; AB-INITIO; QUANTUM-CHEMISTRY; EXCITED-STATES AB A many-body expansion of the correlation energy has been formulated in terms of localized molecular orbitals, and the CEEIS (correlation energy extrapolation by intrinsic scaling) method has been used for the evaluation of local full configuration interaction energies in this context. No truncations were applied in the correlating virtual space. With this combination of methods, the full valence Cl energy of the molecule NCCN has been calculated within 0.1 mhartree for cc-pVDZ basis sets (configuration space dimension = 10(19)) With appropriate choice of localized orbitals, the many-body expansion was converged to this accuracy with the four-body terms The individual many-body terms exhibited a rapid decrease with the distance between the localized orbitals. For the orbitals chosen, the conjugated triple bonds presented no problems. The analysis of the various contributions furnishes rigorous quantitative ab initio benchmarks for the range of intramolecular electron correlations C1 Iowa State Univ, Dept Chem, Ames, IA 50011 USA. Iowa State Univ, USDOE, Ames Lab, Ames, IA 50011 USA. RP Bytautas, L (reprint author), Rice Univ, Dept Chem, Houston, TX 77005 USA. FU Division of Chemical Sciences, Office of Basic Energy Sciences, U S. Department of Energy [DE-AC02-07CH11358] FX L.B. expresses his gratitude and appreciation to K R for many years of friendship. The authors thank Dr Michael W Schmidt for his continued interest, his assistance with the GAMESS code, his valuable suggestions, and his stimulating critique. The authors thank Dr. Albert Defuse for the molecular orbital pictures The present work was supported by the Division of Chemical Sciences, Office of Basic Energy Sciences, U S. Department of Energy under Contract No. DE-AC02-07CH11358 with Iowa State University through the Ames Laboratory. NR 158 TC 6 Z9 6 U1 0 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 26 PY 2010 VL 114 IS 33 BP 8601 EP 8612 DI 10.1021/jp9120595 PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 639GW UT WOS:000280962400011 PM 20387786 ER PT J AU Schmidt, MW Ivanic, J Ruedenberg, K AF Schmidt, Michael W. Ivanic, Joseph Ruedenberg, Klaus TI Electronic Structure Analysis of the Ground-State Potential Energy Curve of Be-2 SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID DIRECT CONFIGURATION-INTERACTION; DOUGLAS-KROLL TRANSFORMATION; MOLECULAR WAVE-FUNCTIONS; CONSISTENT-FIELD METHOD; MULTIPLE ACTIVE SPACES; BERYLLIUM DIMER; BENCHMARK CALCULATIONS; VARIABLE OCCUPATIONS; PERTURBATION-THEORY; BINDING-ENERGY AB The recently measured ground-state potential energy curve of the diatomic beryllium molecule is reproduced to within an accuracy of 20 cm(-1) by a full valence configuration interaction calculation based on augmented correlation-consistent double-, triple-, and quadruple-zeta basis sets, followed by a two-tier extrapolation to the complete basis set limit and complemented by a configuration interaction estimate of the core and core-valence correlations The origin of binding in Be-2 as well as the unusual shape of its potential energy curve is elucidated by an in-depth analysis of the contributions of the various components of this wave function to the bonding process. Beyond the bonding region, the 6/8 London dispersion interaction is recovered. C1 [Schmidt, Michael W.; Ruedenberg, Klaus] Iowa State Univ, Dept Chem, Ames, IA 50011 USA. [Schmidt, Michael W.; Ruedenberg, Klaus] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA. [Ivanic, Joseph] NCI Frederick, SAIC Frederick Inc, Informat Syst Program, Adv Biomed Comp Ctr, Frederick, MD 21702 USA. RP Schmidt, MW (reprint author), Iowa State Univ, Dept Chem, Ames, IA 50011 USA. FU DOE; NSF FX The authors are grateful to David Feller for arranging access to the various new Correlation Consistent basis sets for Be, in advance of their publication.28 They thank Laimutis Bytautas for stimulating discussions and help in the literature search The present work was supported by the DOE Chemical Physics program (M.W S, K R), the NSF Petascale Applications grant (M.W.S.), and the NSF Cyberinfrastructure grant (M W S) J . I. thanks Jack Collins for valuable discussions and the staff and administration of the Advanced Biomedical Computing Center for their help and support. MW S (35 years) and J.I. (15 years) wish to thank K R. for his long-standing willingness to share with them his deep insights into quantum NR 59 TC 33 Z9 33 U1 1 U2 14 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 26 PY 2010 VL 114 IS 33 BP 8687 EP 8696 DI 10.1021/jp101506t PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 639GW UT WOS:000280962400021 PM 20507164 ER PT J AU Glaesemann, KR Govind, N Krishnamoorthy, S Kowalski, K AF Glaesemann, Kurt R. Govind, Niranjan Krishnamoorthy, Sriram Kowalski, Karol TI EOMCC, MRPT, and TDDFT Studies of Charge Transfer Processes in Mixed-Valence Compounds: Application to the Spiro Molecule SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID MOTION COUPLED-CLUSTER; DENSITY-FUNCTIONAL THEORY; EXCITED ELECTRONIC STATES; DEGENERATE PERTURBATION-THEORY; TRIPLE EXCITATION CORRECTIONS; CORRELATED WAVE-FUNCTIONS; OPEN-SHELL SYSTEMS; FREE-BASE PORPHIN; SAC-CI METHOD; CONFIGURATION-INTERACTION AB The proper description of electron transfer (ET) processes in mixed-valence compounds poses a significant challenge for commonly used theoretical approaches. In this paper we analyze the 1(2)A(2) and 2(2)A(2) potential energy surfaces of the Spiro cation (5,5'(4H,4H')-spirobitcyclopenta[c]pyrrole]2,2',6,6'-tetrahydro cation) which is a frequently used model to study ET processes We compare and contrast the results obtained with three different methods multireference perturbation theory, equation-of-motion coupled cluster theory, time-dependent density functional theory. We demonstrate that the proper inclusion of dynamical correlation effects plays a crucial role in the description of an avoided crossing between potential energy surfaces. We also find that proper balancing of the ground- and excited-state correlation effects is especially challenging in the vicinity of the 1(2)A(2) and 2(2)A(2) avoided crossing region. C1 [Glaesemann, Kurt R.; Govind, Niranjan; Kowalski, Karol] Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. [Krishnamoorthy, Sriram] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. RP Kowalski, K (reprint author), Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, 902 Battelle Blvd, Richland, WA 99352 USA. RI Govind, Niranjan/D-1368-2011; OI Glaesemann, Kurt/0000-0002-9512-1395 FU Extreme Scale Computing Initiative at Pacific Northwest National Laboratory; Office of Biological and Environmental Research in the US Department of Energy; US Department of Energy by the Battelle Memorial Institute [DE-AC06-76RLO-1830] FX The authors are indebted to Professor Klaus Ruedenberg for his constant desire over many decades to not just generate accurate results but to also understand where the numbers come from and why they are right. This work was supported by the Extreme Scale Computing Initiative (K K), a Laboratory Directed Research and Development Program at Pacific Northwest National Laboratory All calculations were performed using the Molecular Science Computing Facility (MSCF) in the William R Wiley Environmental Molecular Sciences Laboratory (EMSL) at the Pacific Northwest National Laboratory. The William R. Wiley Environmental Molecular Sciences Laboratory at the Pacific Northwest National Laboratory is funded by the Office of Biological and Environmental Research in the US Department of Energy. The Pacific Northwest National Laboratory is operated for the US Department of Energy by the Battelle Memorial Institute under Contract DE-AC06-76RLO-1830 NR 100 TC 16 Z9 16 U1 0 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 26 PY 2010 VL 114 IS 33 BP 8764 EP 8771 DI 10.1021/jp101761d PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 639GW UT WOS:000280962400028 PM 20540550 ER PT J AU Glaesemann, KR Schmidt, MW AF Glaesemann, Kurt R. Schmidt, Michael W. TI On the Ordering of Orbital Energies in High-Spin ROHF SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID DEGENERATE PERTURBATION-THEORY; CORRELATED WAVE-FUNCTIONS; CONSISTENT-FIELD THEORY; HARTREE-FOCK THEORY; OPEN-SHELL SYSTEMS; MINIMAL BASIS-SETS; MOLECULAR-ORBITALS; EXCITED-STATES; AB-INITIO; HOLE STATES AB The restricted open-shell Hartree-Fock (ROHF) method is a standard tool used by quantum chemists for studying molecules with unpaired electrons In this work a problem with some implementations of the ROHF. method is presented along with an elegant solution. The ground state (2)A(2) potential energy surface of the 5,5'-(4H, 4H')-spirobi[cyclopenta[c]pyrrole]-2,2'6,6'-tetrahydro cation is the molecular test case, which elucidates the underlying problem For this molecule, four distinct ROHF perturbation theories yield smooth (and parallel) potential energy curves The arbitrariness of the ROHF orbital energies is illustrated with diatomic CN. The method proposed will also fix Aufbau principle violations reported by Plakhutin and Davidson [Plakhutin, B N, Davidson, E R J. Phys. Chem. A 2009, 113, 12386-12395] C1 [Glaesemann, Kurt R.] Pacific NW Natl Lab, William R Wiley Environm & Mol Sci Lab, Richland, WA 99352 USA. [Schmidt, Michael W.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA. [Schmidt, Michael W.] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA. RP Glaesemann, KR (reprint author), Pacific NW Natl Lab, William R Wiley Environm & Mol Sci Lab, MS K8-83,POB 999, Richland, WA 99352 USA. OI Glaesemann, Kurt/0000-0002-9512-1395 FU DOE; NSF FX 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, operated for DOE by Battelle Most calculations wine performed at the Molecular Science Computing Facility (MSCF) located at EMSL, PNNL The unified block-by-block Fock construction scheme discussed in this paper is due to John Montgomery (then at United Technologies) and has been included in GAMESS since April 1988 MWS acknowledges support from the DOE Chemical Physics program, the NSF Petascale Applications grant, and the NSF Cyberinfrastructure grant NR 70 TC 16 Z9 17 U1 1 U2 14 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 26 PY 2010 VL 114 IS 33 BP 8772 EP 8777 DI 10.1021/jp101758y PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 639GW UT WOS:000280962400029 PM 20443582 ER PT J AU Schoendorff, G de Jong, WA Gordon, MS Windus, TL AF Schoendorff, George de Jong, Wibe A. Gordon, Mark S. Windus, Theresa L. TI Gas Phase Computational Studies on the Competition between Nitrite and Water Ligands in Uranyl Complexes SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID ENERGY-ADJUSTED PSEUDOPOTENTIALS; PARAMETER SETS; METAL-IONS; DENSITY; EXCHANGE; ACIDITY; STABILITY; DYNAMICS AB The gas phase formation of uranyl dicationic complexes containing water and nitrile (acetonitrile, propionitrile, and benzonitrile) ligands, [UO(2)(H(2)O)(m)(RCN)(n)](2+), has been studied using density functional theory with a relativistic effective core potential to account for scalar relativistic effects on uranium It is shown that nitrile addition is favored over the addition of water ligands Decomposition of these complexes to [UO(2)OH(H(2)O)(m)(RCN)(n)](+) by the loss of either H(3)O(+) or (RCN + H)(+) is also examined. It is found that this reaction is competitive with the ligand addition when the coordination sphere of uranyl is unsaturated. Additionally, this reaction is influenced by the size of the nitrile ligand with reactions involving acetonitrile being the most prevalent Finally, ligand addition to the monocation shows trends similar to that of the dication with energetic differences being smaller for the addition to the monocation. C1 [Schoendorff, George; Gordon, Mark S.; Windus, Theresa L.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA. [Schoendorff, George; Gordon, Mark S.; Windus, Theresa L.] Ames Lab, Ames, IA 50011 USA. [de Jong, Wibe A.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Windus, TL (reprint author), Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RI DE JONG, WIBE/A-5443-2008; OI DE JONG, WIBE/0000-0002-7114-8315; Schoendorff, George/0000-0001-8624-5217 FU U. S Department of Energy's Office of Biological and Environmental Research at the Pacific Northwest National Laboratory; Iowa State University; NSF FX This research was performed in part using the Molecular Science Computing Facility (MSCF) in the R Wiley Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the U. S Department of Energy's Office of Biological and Environmental Research and located at the Pacific Northwest National Laboratory, operated for the Department of Energy by Battelle Funding has been provided by Iowa State University and an NSF grant in petascale applications (M.S.G. and T L W.). NR 26 TC 4 Z9 4 U1 1 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 26 PY 2010 VL 114 IS 33 BP 8902 EP 8912 DI 10.1021/jp103227x PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 639GW UT WOS:000280962400047 PM 20608719 ER PT J AU Glezakou, VA Elbert, ST Xantheas, SS Ruedenberg, K AF Glezakou, Vassiliki-Alexandra Elbert, Stephen T. Xantheas, Sotiris S. Ruedenberg, Klaus TI Analysis of Bonding Patterns in the Valence Isoelectronic Series O-3, S-3, SO2, and OS2 in Terms of Oriented Quasi-Atomic Molecular Orbitals SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID POTENTIAL-ENERGY SURFACES; CHAPPUIS-BAND ABSORPTION; INTRINSIC LOCAL CONSTITUENTS; ELECTRONIC WAVE-FUNCTIONS; GAUSSIAN-BASIS SETS; OZONE MOLECULE; VIBRATIONAL FREQUENCIES; STRATOSPHERIC OZONE; INTERSECTION SEAM; EXCITED-STATES AB A novel analysis of the chemical bonding pattern in the valence isoelectronic series of triatomic molecules O-3, S-3, SO2, and OS2 is reported It is based on examining the bond order matrix elements between the oriented localized molecular orbitals (OLMOs) that are localized on the three individual atoms. left (L), center (C), and right (R) The analysis indicates that there is a (L-C) and (C-R) pi-bonding interaction and a (L-R) pi-antibonding interaction. It supports the earlier proposed "partial biradical" interpretation of these systems, which had recently been challenged The degree of biradical character is shown to increase from SO2 to S-3 to O-3 to OS2. C1 [Glezakou, Vassiliki-Alexandra; Xantheas, Sotiris S.] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA. [Elbert, Stephen T.] Pacific NW Natl Lab, Div Math & Comp Sci, Richland, WA 99352 USA. [Ruedenberg, Klaus] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Ruedenberg, Klaus] Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Xantheas, SS (reprint author), Pacific NW Natl Lab, Div Chem & Mat Sci, 902 Battelle Blvd,MS K1-83, Richland, WA 99352 USA. RI Xantheas, Sotiris/L-1239-2015; Elbert, Stephen/F-9019-2016 OI Elbert, Stephen/0000-0003-2258-8901 NR 60 TC 10 Z9 10 U1 1 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 26 PY 2010 VL 114 IS 33 BP 8923 EP 8931 DI 10.1021/jp105025d PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 639GW UT WOS:000280962400049 PM 20666489 ER PT J AU Wang, TH Dixon, DA Henderson, MA AF Wang, Tsang-Hsiu Dixon, David A. Henderson, Michael A. TI C-C and C-Heteroatom Bond Dissociation Energies in CH3R ' C(OH)(2): Energetics for Photocatalytic Processes of Organic Diolates on TiO2 Surfaces SO JOURNAL OF PHYSICAL CHEMISTRY C LA English DT Article ID COUPLED-CLUSTER THEORY; CORRELATED MOLECULAR CALCULATIONS; ELECTRONIC-STRUCTURE THEORY; GAUSSIAN-BASIS SETS; AB-INITIO; TRIPLE EXCITATIONS; WAVE-FUNCTIONS; GAS-PHASE; THERMODYNAMIC PROPERTIES; RADICAL EJECTION AB The bond energies of a range of gem-diols, CH3R'C(OH)(2) (R' = H, F, Cl, Br, CN, NO2, CF3, CH3CH2, CH3CH2,CH2, CH3CH2CH2CH2, (CH3)(2))CH, (CH3)(3)C, (CH3)(2)CH)CH2, (CH3CH2)(CH3)CH, C6H5, and (CH3CH2)(CH3)CH), which serve as models for binding to a surface, have been studied with density functional theory (DFT) and the molecular orbital G3(MP2) method to provide thermodynamic data for the analysis of the photochemistry of ketones on TiO2. The ultraviolet (UV) photon-induced photodecomposition of adsorbed acetone and 3,3-dimethylbutanone on the rutile TiO2(110) surface has been investigated with photon-stimulated desorption (PSD) and temperature-programmed desorption (TPD). The C-CH3 and C-C(R') bond dissociation energies in CH3R'C(OH)(2) were predicted, and our calculated bond dissociation energies are in excellent agreement with the available experimental values. We used a series of isodcmic reactions to provide small corrections to the various bond dissociation energies. The calculated bond dissociation energies are in agreement with the observed photodissociation processes except for R' = CF3, suggesting that these processes are under thermodynamic control. For R' = CF3, reaction dynamics also play a role in determining the photodissociation mechanism. The gas-phase Bronsted acidities of the gem-diols were calculated. For three molecules, R' = Cl, Br, and NO,, loss of a proton leads to the formation of a complex of acetic acid with the anion Cl-, Br-, and NO2-. The acidities of these three species are very high, with the former two having acidities comparable to CF3SO3H. The ketones (R'RC(=O)) are weak Lewis acids, except where addition of OH- leads to the dissociation of the complex to form an anion bonded to acetic acid, R' = NO2, Cl, and Br. The X-C bond dissociation energies for a number of X-CO2- species were calculated, and these should be useful in correlating with photochemical reactivity studies. C1 [Wang, Tsang-Hsiu; Dixon, David A.] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA. [Henderson, Michael A.] Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA. RP Dixon, DA (reprint author), Univ Alabama, Dept Chem, Shelby Hall,Box 870336, Tuscaloosa, AL 35487 USA. EM dadixon@bama.ua.edu FU Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, U.S. Department of Energy (DOE) [DE-AC06-76RL01830, DE-FG02-03ER15481]; National Science Foundation [CTS-0608896]; The University of Alabama FX This work was supported by the Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, U.S. Department of Energy (DOE), under Grants DE-AC06-76RL01830 (PNNL) and DE-FG02-03ER15481 (catalysis center program) and by the National Science Foundation (CTS-0608896) through the NIRT program. D.A.D. also thanks the Robert Ramsay Chair Fund of The University of Alabama for support. Pacific Northwest National Laboratory is a multiprogram national laboratory operated for the U.S. Department of Energy by Battelle Memorial Institute. Some of the research reported here was performed in the William R. Wiley Environmental Molecular Science Laboratory, a DOE user facility funded by the Office of Biological and Environmental Research. NR 55 TC 8 Z9 8 U1 0 U2 26 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 AUG 26 PY 2010 VL 114 IS 33 BP 14083 EP 14092 DI 10.1021/jp1024697 PG 10 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 639GS UT WOS:000280961800020 ER PT J AU Brown, MA Ashby, PD Krisch, MJ Liu, Z Mun, BS Green, RG Giorgi, JB Hemminger, JC AF Brown, Matthew A. Ashby, Paul D. Krisch, Maria J. Liu, Zhi Mun, B. Simon Green, Richard G. Giorgi, Javier B. Hemminger, John C. TI Interfacial Dushman-like Chemistry in Hydrated KIO3 Layers Grown on KI SO JOURNAL OF PHYSICAL CHEMISTRY C LA English DT Article ID SEA-SALT PARTICLES; POLARIZATION FORCE MICROSCOPY; LIQUID-VAPOR INTERFACE; SOLID POTASSIUM-IODIDE; RATE CONSTANTS; PHOTOELECTRON-SPECTROSCOPY; WATER-ADSORPTION; HETEROGENEOUS CHEMISTRY; TROPOSPHERIC CHEMISTRY; MOLECULAR-STRUCTURE AB Ozone is known to readily oxidize the heavier alkali halides in the form of sea salt aerosols, and this chemistry is thought to be a probable candidate for the formation of reactive gas-phase halogens in the troposphere. Water that becomes adsorbed at the interface following the oxidation process is believed to play a vital role in the mechanisms that release these gas-phase halogens. We have carried out studies that utilize X-ray photoemission spectroscopy and atomic force microscopy to follow the surface chemistry and topography of KIO3 films as they are exposed to water vapor at room temperature. The KIO3 films were grown under dry conditions by the heterogeneous reaction of ozone with a model low defect density KI(100) single crystal. As the water vapor pressure is increased above the surface dissolution point, the KIO3 layer becomes solvated and ionic mobility at the surface increases. This mobility results in a ripening process that creates large crystallites of KIO3. The inhomogeneous KIO3 layer continues to evolve at relative humidities near the bulk deliquescence point of the KI(100) substrate. Under these conditions, surface-adsorbed water molecules dissociate at defect sites generated during the initial heterogeneous reaction process and provide the necessary protons to initiate a Dushman-like surface reaction, where IO3- and 1(-) react to release gas-phase iodide compounds. Vacancies created in lattice sites during the release of gas-phase iodide species are replaced by OH- groups to form a stable adlayer of KOH (which is likely partially hydrated). As a result of the KOH x H2O adlayer, which does not react further with O-3, only a portion of the particle's iodide content is available for reaction. C1 [Brown, Matthew A.; Krisch, Maria J.; Hemminger, John C.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. [Brown, Matthew A.; Krisch, Maria J.; Hemminger, John C.] Univ Calif Irvine, AirUCI, Irvine, CA 92697 USA. [Ashby, Paul D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA. [Liu, Zhi; Mun, B. Simon] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. [Mun, B. Simon] Hanyang Univ, Dept Appl Phys, Ansan 426791, Kyunggi Do, South Korea. [Green, Richard G.; Giorgi, Javier B.] Univ Ottawa, Dept Chem, Ottawa, ON K1N 6N5, Canada. [Green, Richard G.; Giorgi, Javier B.] Univ Ottawa, Ctr Catalysis Res & Innovat, Ottawa, ON K1N 6N5, Canada. RP Hemminger, JC (reprint author), Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. EM jchemmin@uci.edu RI Brown, Matthew/D-9236-2012; Mun, Bongjin /G-1701-2013; Liu, Zhi/B-3642-2009 OI Liu, Zhi/0000-0002-8973-6561 FU National Science Foundation [CHE-0909227, CHE-0431312]; ALS; Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences and Materials Sciences Divisions of the U.S. Department of Energy at the Lawrence Berkeley National Laboratory [DE-AC03-76SF00098]; Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]; Canadian Foundation for Innovation; Ontario Innovation Trust; Natural Sciences and Engineering Research Council of Canada FX The National Science Foundation supported this work under Grant Nos. CHE-0909227 and CHE-0431312. M.A.B. acknowledges the ALS for support through the Doctoral Fellowship Program. The ALS and the ambient pressure X-ray photoemission endstation at beamline 9.3.2 are supported by the Director, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences and Materials Sciences Divisions of the U.S. Department of Energy at the Lawrence Berkeley National Laboratory under Contract No. DE-AC03-76SF00098. Portions of this work were performed at the Molecular Foundry, Lawrence Berkeley National Laboratory, which is supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. J.B.G. and R.G.G. acknowledge the Canadian Foundation for Innovation, the Ontario Innovation Trust, and the Natural Sciences and Engineering Research Council of Canada for financial support. NR 88 TC 6 Z9 6 U1 2 U2 13 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 AUG 26 PY 2010 VL 114 IS 33 BP 14093 EP 14100 DI 10.1021/jp1025703 PG 8 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 639GS UT WOS:000280961800021 ER PT J AU Glazoff, MV Rashkeev, SN AF Glazoff, Michael V. Rashkeev, Sergey N. TI Beryllium Adsorption at Transition Aluminas: Implications for Environmental Science and Oxidation of Aluminum Alloys SO JOURNAL OF PHYSICAL CHEMISTRY C LA English DT Article ID MOLECULAR-DYNAMICS; HYDROGEN AB It is demonstrated that gamma- and eta-aluminas (transition Al(2)O(3) polytypes with defect spinel structure) can effectively capture beryllium atoms. Although the bulk crystal structures of these two oxides are characterized only by slight differences in cation vacancy distributions, the interactions of Be with the two polytypes are different. For gamma-Al(2)O(3), the Be adsorption energy is high (similar to 5 eV per atom) and all Be atoms are captured and trapped at the surface-all attempts to move Be in the subsurface region result in its expulsion back to the surface. On the other hand, for eta-alumina, Be atoms can be captured both at the surface and in octahedrally coordinated subsurface cation vacancies. This result implies that both aluminas could be successfully used for Be capture out of wastewater streams related to industrial processes of aluminum and alumina production. Also, the surface adsorption mechanism of Be at gamma-Al(2)O(3) explains why very small additions of Be (of the order of several ppm) to Al-Mg and Al-Mg Si casting and wrought alloys prevent run-away oxidation of these materials in the molten state, as well as ingot cracking. We also discuss possibilities to use other additives (e.g., Ca and Sr), yielding the same protective effect for aluminum alloys but which are less toxic than beryllium. C1 [Glazoff, Michael V.] Idaho Natl Lab, Adv Proc & Decis Syst, Idaho Falls, ID 83415 USA. [Rashkeev, Sergey N.] Idaho Natl Lab, Ctr Adv Modeling & Simulat, Idaho Falls, ID 83415 USA. RP Glazoff, MV (reprint author), Idaho Natl Lab, Adv Proc & Decis Syst, Idaho Falls, ID 83415 USA. FU NSF [DMR-0513048]; Idaho National Laboratory (INL) Laboratory Directed Research and Development (LDRD); DoE, Office of Nuclear Energy [DE-AC07-051D14517] FX This work was supported in part by the NSF Grant No. DMR-0513048, by the Idaho National Laboratory (INL) Laboratory Directed Research and Development (LDRD) program, by the DoE, Office of Nuclear Energy under DoE Idaho Operations Office Contract DE-AC07-051D14517, and by a grant of computer time from the High Performance Computing Center at the INL. Also, this research used resources of the National Energy Research Scientific Computing Center (NERSC), which is supported in part by the U.S. DoE under Contract No. DE-AC02-05CH11231. NR 16 TC 1 Z9 1 U1 1 U2 1 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 AUG 26 PY 2010 VL 114 IS 33 BP 14208 EP 14212 DI 10.1021/jp1044942 PG 5 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 639GS UT WOS:000280961800034 ER PT J AU Rose, KA Sikes, EL Guilderson, TP Shane, P Hill, TM Zahn, R Spero, HJ AF Rose, Kathryn A. Sikes, Elisabeth L. Guilderson, Thomas P. Shane, Phil Hill, Tessa M. Zahn, Rainer Spero, Howard J. TI Upper-ocean-to-atmosphere radiocarbon offsets imply fast deglacial carbon dioxide release SO NATURE LA English DT Article ID LAST DEGLACIATION; PACIFIC-OCEAN; CLIMATE VARIABILITY; NORTH-ATLANTIC; NEW-ZEALAND; CO2; KYR; VENTILATION; CALIBRATION; WESTERLIES AB Radiocarbon in the atmosphere is regulated largely by ocean circulation, which controls the sequestration of carbon dioxide (CO(2)) in the deep sea through atmosphere-ocean carbon exchange. During the last glaciation, lower atmospheric CO(2) levels were accompanied by increased atmospheric radiocarbon concentrations that have been attributed to greater storage of CO(2) in a poorly ventilated abyssal ocean(1,2). The end of the ice age was marked by a rapid increase in atmospheric CO(2) concentrations(2) that coincided with reduced (14)C/(12)C ratios (Delta(14)C) in the atmosphere(3), suggesting the release of very 'old' ((14)C-depleted) CO(2) from the deep ocean to the atmosphere(3). Here we present radiocarbon records of surface and intermediate-depth waters from two sediment cores in the southwest Pacific and Southern oceans. We find a steady 170 per mil decrease in Delta(14)C that precedes and roughly equals in magnitude the decrease in the atmospheric radiocarbon signal during the early stages of the glacial-interglacial climatic transition. The atmospheric decrease in the radiocarbon signal coincides with regionally intensified upwelling and marine biological productivity(4), suggesting that CO(2) released by means of deep water upwelling in the Southern Ocean lost most of its original depleted-(14)C imprint as a result of exchange and isotopic equilibration with the atmosphere. Our data imply that the deglacial (14)C depletion previously identified in the eastern tropical North Pacific(5) must have involved contributions from sources other than the previously suggested carbon release by way of a deep Southern Ocean pathway(5), and may reflect the expanded influence of the (14)C-depleted North Pacific carbon reservoir across this interval. Accordingly, shallow water masses advecting north across the South Pacific in the early deglaciation had little or no residual (14)C-depleted signals owing to degassing of CO(2) and biological uptake in the Southern Ocean. C1 [Sikes, Elisabeth L.] Rutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA. [Rose, Kathryn A.; Hill, Tessa M.; Spero, Howard J.] Univ Calif Davis, Dept Geol, Davis, CA 95616 USA. [Guilderson, Thomas P.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Guilderson, Thomas P.] Univ Calif Santa Cruz, Inst Marine Sci, Santa Cruz, CA 95064 USA. [Shane, Phil] Univ Auckland, Sch Environm, Auckland 1142, New Zealand. [Zahn, Rainer] Univ Autonoma Barcelona, Inst Ciencia & Tecnol Ambientals, Dept Geol, Inst Catalana Recerca & Estudis Avancats,ICREA, Bellaterra 08193, Spain. RP Sikes, EL (reprint author), Rutgers State Univ, Inst Marine & Coastal Sci, 71 Dudley Rd, New Brunswick, NJ 08901 USA. EM sikes@marine.rutgers.edu OI Hill, Tessa/0000-0003-4159-9104; Shane, Philip/0000-0002-7824-1184; Spero, Howard/0000-0001-5465-8607 FU National Science Foundation (NSF) [RR0503]; Evolving Earth Foundation; Geological Society of America; MICINN, Spain; US Department of Energy FX We thank the captain and crew of the RV Revelle, and our shipboard colleagues during the Zheng leg 3 (RR0503) cruise funded by the National Science Foundation (NSF), which collected the RR core. Core MD97-2120 was collected through the International Marine Past Global Change Study (IMAGES) program and with the technical support of the Institut Polaire Francais Paul Emile Victor (IPEV) who made the research vessel Marion Dufresne available for core retrieval. H.J.S., E.L.S. and T.P.G., and the shore analyses, were supported by NSF awards and the Evolving Earth Foundation, and the Geological Society of America provided support for K.A.R. during her MSc. R.Z. acknowledges support from the MICINN, Spain. A portion of this work was performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory. We especially thank M. Cook for discussions, continuing input and suggestions throughout this study. NR 32 TC 41 Z9 41 U1 5 U2 36 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD AUG 26 PY 2010 VL 466 IS 7310 BP 1093 EP 1097 DI 10.1038/nature09288 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 642IK UT WOS:000281203600037 PM 20740012 ER PT J AU Acosta, VM Jarmola, A Windes, D Corsini, E Ledbetter, MP Karaulanov, T Auzinsh, M Rangwala, SA Kimball, DFJ Budker, D AF Acosta, V. M. Jarmola, A. Windes, D. Corsini, E. Ledbetter, M. P. Karaulanov, T. Auzinsh, M. Rangwala, S. A. Kimball, D. F. Jackson Budker, D. TI Rubidium dimers in paraffin-coated cells SO NEW JOURNAL OF PHYSICS LA English DT Article ID QUANTUM MEMORY; LIGHT; RELAXATION; STATE; MAGNETOMETRY; VAPOR; ATOMS; RB-2 AB Measurements were made to determine the density of rubidium dimer vapor in paraffin-coated cells. The number density of dimers and atoms in similar paraffin-coated and uncoated cells was measured by optical spectroscopy. Due to the relatively low melting point of paraffin, a limited temperature range of 43-80 degrees C was explored, with the lower end corresponding to a dimer density of less than 10(7) cm(-3). With 1 min integration time, a sensitivity to dimer number density of better than 10(6) cm(-3) was achieved. No significant difference in dimer density between the cells was observed. C1 [Acosta, V. M.; Windes, D.; Corsini, E.; Ledbetter, M. P.; Karaulanov, T.; Budker, D.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Jarmola, A.; Auzinsh, M.] Univ Latvia, Ctr Laser, LV-1586 Riga, Latvia. [Rangwala, S. A.] Raman Res Inst, Bangalore 560080, Karnataka, India. [Kimball, D. F. Jackson] Calif State Univ E Bay, Dept Phys, Hayward, CA 94542 USA. [Budker, D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Acosta, VM (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM vmacosta@berkeley.edu; budker@berkeley.edu RI Acosta, Victor/G-8176-2011; Rangwala, Sadiq/E-6899-2012; Budker, Dmitry/F-7580-2016; OI Budker, Dmitry/0000-0002-7356-4814; Acosta, Victor/0000-0003-0058-9954 FU ONR MURI [N-00014-05-1-0406]; NSF [PHY-0855552, PHY-0652824]; NSF/DST Indo-US FX This work was supported by ONR MURI grant no. N-00014-05-1-0406, NSF grants PHY-0855552 and PHY-0652824 and an NSF/DST Indo-US Collaboration grant. The authors are grateful to A I Okunevich, M Tamanis, O Nikolayeva, K Ravi, A Sharma and J Higbie for useful discussions and to B P Das for his support of the project. NR 40 TC 2 Z9 2 U1 0 U2 12 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD AUG 26 PY 2010 VL 12 AR 083054 DI 10.1088/1367-2630/12/8/083054 PG 8 WC Physics, Multidisciplinary SC Physics GA 645TO UT WOS:000281489300001 ER PT J AU Butch, NP Jeffries, JR Chi, SX Leao, JB Lynn, JW Maple, MB AF Butch, Nicholas P. Jeffries, Jason R. Chi, Songxue Leao, Juscelino Batista Lynn, Jeffrey W. Maple, M. Brian TI Antiferromagnetic critical pressure in URu2Si2 under hydrostatic conditions SO PHYSICAL REVIEW B LA English DT Article ID ELECTRON SUPERCONDUCTOR URU2SI2; TEMPERATURE PHASE-DIAGRAM; HIDDEN-ORDER; SYSTEM URU2SI2; MAGNETIC EXCITATIONS; TRANSITIONS; STATES AB The onset of antiferromagnetic order in URu2Si2 has been studied via neutron diffraction in a helium pressure medium, which most closely approximates hydrostatic conditions. The antiferromagnetic critical pressure is 0.80 GPa, considerably higher than values previously reported. Complementary electrical resistivity measurements imply that the hidden-order-antiferromagnetic bicritical point falls between 1.3 and 1.5 GPa. Moreover, the redefined pressure-temperature phase diagram suggests that the superconducting and antiferromagnetic phase boundaries actually meet at a common critical pressure at zero temperature. C1 [Butch, Nicholas P.] Univ Maryland, Dept Phys, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USA. [Jeffries, Jason R.] Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, Livermore, CA 94550 USA. [Chi, Songxue; Leao, Juscelino Batista; Lynn, Jeffrey W.] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA. [Maple, M. Brian] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. RP Butch, NP (reprint author), Univ Maryland, Dept Phys, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USA. EM nbutch@umd.edu RI Chi, Songxue/A-6713-2013 OI Chi, Songxue/0000-0002-3851-9153 FU DOE [DE-FG02-04ER46105]; DOE, NNSA [DE-AC52-07NA27344]; Science Campaign at LLNL; CNAM FX Sample preparation was supported by the DOE under Research Grant No. DE-FG02-04ER46105. LLNL is operated by Lawrence Livermore National Security, LLC, for the DOE, NNSA under Contract No. DE-AC52-07NA27344. J.R.J. is supported by the Science Campaign at LLNL. N.P.B. is supported by CNAM. NR 33 TC 27 Z9 27 U1 1 U2 10 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 AUG 26 PY 2010 VL 82 IS 6 AR 060408 DI 10.1103/PhysRevB.82.060408 PG 4 WC Physics, Condensed Matter SC Physics GA 643BP UT WOS:000281268100001 ER PT J AU Huang, CC Fratesi, G MacLaren, DA Luo, WD Brivio, GP Allison, W AF Huang, Congcong Fratesi, G. MacLaren, D. A. Luo, Weidong Brivio, G. P. Allison, W. TI Charge redistribution in the formation of one-dimensional lithium wires on Cu(001) SO PHYSICAL REVIEW B LA English DT Article ID METAL-SURFACES; C(2X2) STRUCTURE; LI ADSORPTION; HELIUM-ATOM; TRANSITION; SCATTERING AB We describe the formation of one-dimensional lithium wires on a Cu(001) substrate, providing an atomic-scale description of the onset of metallization in this prototypical adsorption system. A combination of helium atom scattering and density-functional theory reveals pronounced changes in the electronic charge distribution on the formation of the c(5 root 2x root 2)R45 degrees Li/Cu(001) structure, as in-plane bonds are created. Charge donation from Li-substrate bonds is found to facilitate the formation of stable, bonded, and depolarized chains of Li adatoms that coexist with an interleaved phase of independent adatoms. The resultant overlayer has a commensurate charge distribution and lattice modulations but differs fundamentally from structurally similar charge-density wave systems. C1 [Huang, Congcong; MacLaren, D. A.; Allison, W.] Univ Cambridge, Cavevdish Lab, Cambridge CB3 0HE, England. [Huang, Congcong] Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. [Fratesi, G.; Brivio, G. P.] Univ Milano Bicocca, CNISM, ETSF, Dipartimento Sci Mat, I-20125 Milan, Italy. [MacLaren, D. A.] Univ Glasgow, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland. [Luo, Weidong] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. RP Huang, CC (reprint author), Univ Cambridge, Cavevdish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England. EM congcong@stanford.edu; dmaclaren@physics.org RI Fratesi, Guido/A-4637-2010; Huang, Congcong/A-6374-2011; MacLaren, D/A-5568-2010; Luo, Weidong/A-8418-2009 OI Fratesi, Guido/0000-0003-1077-7596; MacLaren, D/0000-0003-0641-686X; Luo, Weidong/0000-0003-3829-1547 NR 32 TC 3 Z9 3 U1 1 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 26 PY 2010 VL 82 IS 8 AR 081413 DI 10.1103/PhysRevB.82.081413 PG 4 WC Physics, Condensed Matter SC Physics GA 643BU UT WOS:000281268600001 ER PT J AU Liu, C Lee, Y Palczewski, AD Yan, JQ Kondo, T Harmon, BN McCallum, RW Lograsso, TA Kaminski, A AF Liu, Chang Lee, Yongbin Palczewski, A. D. Yan, J-Q. Kondo, Takeshi Harmon, B. N. McCallum, R. W. Lograsso, T. A. Kaminski, A. TI Surface-driven electronic structure in LaFeAsO studied by angle-resolved photoemission spectroscopy SO PHYSICAL REVIEW B LA English DT Article ID NODELESS SUPERCONDUCTING GAPS; IRON; COMPOUND; ARPES AB We measured the electronic structure of an iron arsenic parent compound LaFeAsO using angle- resolved photoemission spectroscopy (ARPES). By comparing with a full- potential linear augmented plane wave calculation we show that the extra large Gamma hole pocket measured via ARPES comes from electronic structure at the sample surface. Based on this we discuss the strong- polarization dependence of the band structure and a temperature- dependent holelike band around the M point. The two phenomena give additional evidences for the existence of the surface- driven electronic structure. C1 [Liu, Chang; Lee, Yongbin; Palczewski, A. D.; Yan, J-Q.; Kondo, Takeshi; Harmon, B. N.; McCallum, R. W.; Lograsso, T. A.; Kaminski, A.] Ames Lab, Div Engn & Mat Sci, Ames, IA 50011 USA. [Liu, Chang; Palczewski, A. D.; Kondo, Takeshi; Harmon, B. N.; Kaminski, A.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [McCallum, R. W.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. RP Liu, C (reprint author), Ames Lab, Div Engn & Mat Sci, Ames, IA 50011 USA. RI Kondo, Takeshi/H-2680-2016 NR 38 TC 27 Z9 28 U1 1 U2 18 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 26 PY 2010 VL 82 IS 7 AR 075135 DI 10.1103/PhysRevB.82.075135 PG 6 WC Physics, Condensed Matter SC Physics GA 643BS UT WOS:000281268400003 ER PT J AU Setoodehnia, K Chen, AA Chen, J Clark, JA Deibel, CM Geraedts, SD Kahl, D Parker, PD Seiler, D Wrede, C AF Setoodehnia, K. Chen, A. A. Chen, J. Clark, J. A. Deibel, C. M. Geraedts, S. D. Kahl, D. Parker, P. D. Seiler, D. Wrede, C. TI Structure of S-30 with S-32(p,t)S-30 and the thermonuclear P-29(p,gamma)S-30 reaction rate SO PHYSICAL REVIEW C LA English DT Article ID X-RAY-BURSTS; NOVA NUCLEOSYNTHESIS; PRESOLAR GRAINS; ENERGY-LEVELS; NUCLEI; STATES; DECAY; STARS; AR-34 AB The structure of proton unbound S-30 states is important for determining the P-29(p,gamma)S-30 reaction rate, which influences explosive hydrogen burning in classical novae and type I x-ray bursts. The reaction rate in this temperature regime had been previously predicted to be dominated by two low-lying, unobserved, J(pi) = 3(+) and 2(+) resonances above the proton threshold in S-30. To search for these levels, the structure of S-30 was studied using the S-32(p, t)S-30 transfer reaction with a magnetic spectrograph. We have confirmed a previous detection of a state near 4700 keV, which had tentatively been assigned J(pi) = 3(+). We have also discovered a new state at 4814(3) keV, which is a strong candidate for the other important resonance (J(pi) = 2(broken vertical bar)). The new P-29(p,gamma)S-30 reaction rate is up to 4-20 times larger than previously determined rates over the relevant temperature range. The uncertainty in the reaction rate due to uncertainties in the resonance energies has been significantly reduced. C1 [Setoodehnia, K.; Chen, A. A.; Chen, J.; Geraedts, S. D.; Kahl, D.] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. [Seiler, D.] Tech Univ Munich, Phys Dept E12, D-85748 Garching, Germany. [Clark, J. A.; Deibel, C. M.; Parker, P. D.; Wrede, C.] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. [Clark, J. A.; Deibel, C. M.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. [Deibel, C. M.] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA. [Wrede, C.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. RP Setoodehnia, K (reprint author), McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. EM setoodk@mcmaster.ca FU Natural Sciences and Engineering Research Council of Canada; US Department of Energy [DE-FG02-91ER40609, DE-AC02-06CH11357, DE-FG02-97ER41020]; DFG cluster of excellence FX We thank the WNSL staff for their contributions. This work was supported by the Natural Sciences and Engineering Research Council of Canada; the US Department of Energy under Grants DE-FG02-91ER40609, DE-AC02-06CH11357, and DE-FG02-97ER41020; and the DFG cluster of excellence "Origin and Structure of the Universe." NR 35 TC 16 Z9 16 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD AUG 26 PY 2010 VL 82 IS 2 AR 022801 DI 10.1103/PhysRevC.82.022801 PG 5 WC Physics, Nuclear SC Physics GA 643CF UT WOS:000281269900002 ER PT J AU Sen, C Alvarez, G Dagotto, E AF Sen, Cengiz Alvarez, Gonzalo Dagotto, Elbio TI First Order Colossal Magnetoresistance Transitions in the Two-Orbital Model for Manganites SO PHYSICAL REVIEW LETTERS LA English DT Article ID PHASE-SEPARATION; PSEUDOGAP AB Large-scale Monte Carlo simulation results for the two-orbital model for manganites, including Jahn-Teller lattice distortions, are presented here. At hole density x = 1/4 and in the vicinity of the region of competition between the ferromagnetic metallic and spin-charge-orbital ordered insulating phases, the colossal magnetoresistance (CMR) phenomenon is observed with a magnetoresistance ratio similar to 10 000%. Our main result is that this CMR transition is found to be of first order in some portions of the phase diagram, in agreement with early results from neutron scattering, specific heat, and magnetization, thus solving a notorious discrepancy between experiments and previous theoretical studies. The first order characteristics of the transition survive, and are actually enhanced, when weak quenched disorder is introduced. C1 [Sen, Cengiz; Dagotto, Elbio] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Sen, Cengiz; Dagotto, Elbio] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. [Alvarez, Gonzalo] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. [Alvarez, Gonzalo] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. RP Sen, C (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. FU U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division FX This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division. The computer simulations were possible in part by a NSF allocation of advanced computing resources at the Kraken (Cray XT5) supercomputer located at the National Institute for Computational Sciences (Ref. [22]). A portion of this research was conducted at the Center for Nanophase Materials Sciences at ORNL. This research used the SPF software (Ref. [23]). NR 26 TC 31 Z9 31 U1 1 U2 21 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 26 PY 2010 VL 105 IS 9 AR 097203 DI 10.1103/PhysRevLett.105.097203 PG 4 WC Physics, Multidisciplinary SC Physics GA 643DA UT WOS:000281272700009 PM 20868190 ER PT J AU Bagwell, CE Hixson, KK Milliken, CE Lopez-Ferrer, D Weitz, KK AF Bagwell, Christopher E. Hixson, Kim K. Milliken, Charles E. Lopez-Ferrer, Daniel Weitz, Karl K. TI Proteomic and Physiological Responses of Kineococcus radiotolerans to Copper SO PLOS ONE LA English DT Article ID TANDEM MASS-SPECTRA; ESCHERICHIA-COLI; SUPEROXIDE-DISMUTASE; ENTEROCOCCUS-HIRAE; SP NOV.; DISULFIDE OXIDOREDUCTASE; SACCHAROMYCES-CEREVISIAE; LIQUID-CHROMATOGRAPHY; RADIATION-RESISTANCE; INTRACELLULAR COPPER AB Copper is a highly reactive, toxic metal; consequently, transport of this metal within the cell is tightly regulated. Intriguingly, the actinobacterium Kineococcus radiotolerans has been shown to not only accumulate soluble copper to high levels within the cytoplasm, but the phenotype also correlated with enhanced cell growth during chronic exposure to ionizing radiation. This study offers a first glimpse into the physiological and proteomic responses of K. radiotolerans to copper at increasing concentration and distinct growth phases. Aerobic growth rates and biomass yields were similar over a range of Cu(II) concentrations (0-1.5 mM) in complex medium. Copper uptake coincided with active cell growth and intracellular accumulation was positively correlated with Cu(II) concentration in the growth medium (R(2) = 0.7). Approximately 40% of protein coding ORFs on the K. radiotolerans genome were differentially expressed in response to the copper treatments imposed. Copper accumulation coincided with increased abundance of proteins involved in oxidative stress and defense, DNA stabilization and repair, and protein turnover. Interestingly, the specific activity of superoxide dismutase was repressed by low to moderate concentrations of copper during exponential growth, and activity was unresponsive to perturbation with paraquot. The biochemical response pathways invoked by sub-lethal copper concentrations are exceptionally complex; though integral cellular functions are preserved, in part, through the coordination of defense enzymes, chaperones, antioxidants and protective osmolytes that likely help maintain cellular redox. This study extends our understanding of the ecology and physiology of this unique actinobacterium that could potentially inspire new biotechnologies in metal recovery and sequestration, and environmental restoration. C1 [Bagwell, Christopher E.; Milliken, Charles E.] Savannah River Natl Lab, Dept Environm Sci & Biotechnol, Aiken, SC USA. [Hixson, Kim K.] Environm Mol Sci Lab, Richland, WA USA. [Lopez-Ferrer, Daniel; Weitz, Karl K.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. RP Bagwell, CE (reprint author), Savannah River Natl Lab, Dept Environm Sci & Biotechnol, Aiken, SC USA. EM Christopher.bagwell@srnl.doe.gov FU U.S. Department of Energy, Office of Environmental Management; U.S. Department of Energy's Office of Biological and Environmental Research located at Pacific Northwest National Laboratory, Richland WA, USA FX This investigation was supported by the U.S. Department of Energy, Office of Environmental Management as administered through the SRNL Laboratory Directed Research and Development Program. A portion of this research was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the U.S. Department of Energy's Office of Biological and Environmental Research located at Pacific Northwest National Laboratory, Richland WA, USA. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 91 TC 8 Z9 10 U1 1 U2 6 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD AUG 26 PY 2010 VL 5 IS 8 AR e12427 DI 10.1371/journal.pone.0012427 PG 13 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 643JL UT WOS:000281292100022 PM 20865147 ER PT J AU Tan, L Allen, TR Demkowicz, P AF Tan, L. Allen, T. R. Demkowicz, P. TI High temperature interfacial reactions of TIC, ZrC, TiN, and ZrN with palladium SO SOLID STATE IONICS LA English DT Article DE Diffusion; Grain boundary; Defect; Microstructure; Ceramics ID TRANSITION-METALS; FUEL-PARTICLES; PD; ALLOYS; PERFORMANCE; ZIRCONIUM; ENERGY; SYSTEM AB SIC as a coating layer of nuclear particle fuels has shown susceptibility to the attack of fission products like palladium. Other high temperature capable ceramics such as TIC, ZrC, TIN, and ZrN, which were identified as candidates for gas-cooled fast reactor systems, can also be examined as potential replacement materials for SiC. The resistance to Pd attack of TIC. ZrC, TiN, and ZrN was examined by diffusion couples annealed at 1400 degrees C for 10 h. Scanning electron microscopy, energy dispersive X-ray spectroscopy, and electron backscatter diffraction were employed to characterize the interfacial reactions of the diffusion couples. The thickness of the reaction zone of the diffusion couples is dependent upon the microstructure of the ceramics. The results indicate the best resistance to Pd attack of TiN and ZrN, followed by TiC and ZrC in sequence. All the four ceramics showed better resistance to Pd attack than SiC. (C) 2010 Elsevier B.V. All rights reserved. C1 [Tan, L.; Allen, T. R.] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA. [Demkowicz, P.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Tan, L (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd,POB 2008,MS 6151, Oak Ridge, TN USA. EM tanl@ornl.gov RI Tan, Lizhen/A-7886-2009; OI Tan, Lizhen/0000-0002-3418-2450; Allen, Todd/0000-0002-2372-7259 FU DOE [DE-AC07-05ID14517] FX This work was supported through the INL Laboratory Directed Research & Development (LDRD) Program under DOE Idaho Operations Office Contract DE-AC07-05ID14517. This research utilized NSF-supported shared facilities at the University of Wisconsin. NR 32 TC 8 Z9 8 U1 1 U2 22 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-2738 J9 SOLID STATE IONICS JI Solid State Ion. PD AUG 26 PY 2010 VL 181 IS 25-26 BP 1156 EP 1163 DI 10.1016/j.ssi.2010.06.054 PG 8 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 654JW UT WOS:000282165300002 ER PT J AU Sluiter, JB Ruiz, RO Scarlata, CJ Sluiter, AD Templeton, DW AF Sluiter, Justin B. Ruiz, Raymond O. Scarlata, Christopher J. Sluiter, Amie D. Templeton, David W. TI Compositional Analysis of Lignocellulosic Feedstocks. 1. Review and Description of Methods SO JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY LA English DT Article DE Summative compositional biomass analysis; lignocellulose; cellulose; hemicellulose; biofuels; 72% sulfuric acid hydrolysis; Klason lignin; laboratory analytical procedure; LAP; NREL ID GAS-LIQUID-CHROMATOGRAPHY; PROTEIN CONVERSION FACTORS; WATER-SOLUBLE MATERIALS; CORN STOVER; DIETARY FIBER; QUANTITATIVE-DETERMINATION; ACID PRETREATMENT; ALDITOL ACETATES; SUGAR ANALYSIS; LIGNIN AB As interest in lignocellulosic biomass feedstocks for conversion into transportation fuels grows, the summative compositional analysis of biomass, or plant-derived material, becomes ever more important. The sulfuric acid hydrolysis of biomass has been used to measure lignin and structural carbohydrate content for more than 100 years. Researchers have applied these methods to measure the lignin and structural carbohydrate contents of woody materials, estimate the nutritional value of animal feed, analyze the dietary fiber content of human food, compare potential biofuels feedstocks, and measure the efficiency of biomass-to-biofuels processes. The purpose of this paper is to review the history and lineage of biomass compositional analysis methods based on a sulfuric acid hydrolysis. These methods have become the de facto procedure for biomass compositional analysis. The paper traces changes to the biomass compositional analysis methods through time to the biomass methods currently used at the National Renewable Energy Laboratory (NREL). The current suite of laboratory analytical procedures (LAPs) offered by NREL is described, including an overview of the procedures and methodologies and some common pitfalls. Suggestions are made for continuing improvement to the suite of analyses. C1 [Sluiter, Justin B.; Ruiz, Raymond O.; Scarlata, Christopher J.; Sluiter, Amie D.; Templeton, David W.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA. RP Templeton, DW (reprint author), Natl Renewable Energy Lab, Natl Bioenergy Ctr, 1617 Cole Blvd, Golden, CO 80401 USA. EM David.Templeton@nrel.gov FU U.S. Department of Energy Office of the Biomass Program FX Received for review February 26, 2010. Revised manuscript received May 26, 2010. Accepted June 2, 2010. This work was supported by the U.S. Department of Energy Office of the Biomass Program. NR 83 TC 222 Z9 228 U1 22 U2 201 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0021-8561 J9 J AGR FOOD CHEM JI J. Agric. Food Chem. PD AUG 25 PY 2010 VL 58 IS 16 BP 9043 EP 9053 DI 10.1021/jf1008023 PG 11 WC Agriculture, Multidisciplinary; Chemistry, Applied; Food Science & Technology SC Agriculture; Chemistry; Food Science & Technology GA 638BV UT WOS:000280866500023 PM 20669951 ER PT J AU Templeton, DW Scarlata, CJ Sluiter, JB Wolfrum, EJ AF Templeton, David W. Scarlata, Christopher J. Sluiter, Justin B. Wolfrum, Edward J. TI Compositional Analysis of Lignocellulosic Feedstocks. 2. Method Uncertainties SO JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY LA English DT Article DE Summative biomass compositional analysis; uncertainty; laboratory analytical procedure; LAP; corn stover; bagasse; lignocellulose ID CORN STOVER AB The most common procedures for characterizing the chemical components of lignocellulosic feedstocks use a two-stage sulfuric acid hydrolysis to fractionate biomass for gravimetric and instrumental analyses. The uncertainty (i.e., dispersion of values from repeated measurement) in the primary data is of general interest to those with technical or financial interests in biomass conversion technology. The composition of a homogenized corn stover feedstock (154 replicate samples in 13 batches, by 7 analysts in 2 laboratories) was measured along with a National Institute of Standards and Technology (NIST) reference sugar cane bagasse, as a control, using this laboratory's suite of laboratory analytical procedures (LAPs). The uncertainty was evaluated by the statistical analysis of these data and is reported as the standard deviation of each component measurement. Censored and uncensored versions of these data sets are reported, as evidence was found for intermittent instrumental and equipment problems. The censored data are believed to represent the "best case" results of these analyses, whereas the uncensored data show how small method changes can strongly affect the uncertainties of these empirical methods. Relative standard deviations (RSD) of 1-3% are reported for glucan, xylan, lignin, extractives, and total component closure with the other minor components showing 4-10% RSD. The standard deviations seen with the corn stover and NIST bagasse materials were similar, which suggests that the uncertainties reported here are due more to the analytical method used than to the specific feedstock type being analyzed. C1 [Templeton, David W.; Scarlata, Christopher J.; Sluiter, Justin B.; Wolfrum, Edward J.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA. RP Templeton, DW (reprint author), Natl Renewable Energy Lab, Natl Bioenergy Ctr, 1617 Cole Blvd, Golden, CO 80401 USA. EM David.Templeton@nrel.gov OI Wolfrum, Edward/0000-0002-7361-8931 FU U.S. Department of Energy Office of the Biomass Program FX Received for review February 26, 2010. Revised manuscript received May 26, 2010. Accepted June 2, 2010. This work was supported by the U.S. Department of Energy Office of the Biomass Program. NR 12 TC 77 Z9 80 U1 1 U2 31 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0021-8561 J9 J AGR FOOD CHEM JI J. Agric. Food Chem. PD AUG 25 PY 2010 VL 58 IS 16 BP 9054 EP 9062 DI 10.1021/jf100807b PG 9 WC Agriculture, Multidisciplinary; Chemistry, Applied; Food Science & Technology SC Agriculture; Chemistry; Food Science & Technology GA 638BV UT WOS:000280866500024 PM 20669952 ER PT J AU Majda, AJ Xing, YL Mohammadian, M AF Majda, Andrew J. Xing, Yulong Mohammadian, Majid TI Moist multi-scale models for the hurricane embryo SO JOURNAL OF FLUID MECHANICS LA English DT Article ID MADDEN-JULIAN OSCILLATION; TROPICAL CYCLOGENESIS; CONVECTION; SUPERPARAMETERIZATION; WAVES; MESOSCALES AB Determining the finite-amplitude preconditioned states in the hurricane embryo, which lead to tropical cyclogenesis, is a central issue in contemporary meteorology. In the embryo there is competition between different preconditioning mechanisms involving hydrodynamics and moist thermodynamics, which can lead to cyclogenesis. Here systematic asymptotic methods from applied mathematics are utilized to develop new simplified moist multi-scale models starting from the moist anelastic equations. Three interesting multi-scale models emerge in the analysis. The balanced mesoscale vortex (BMV) dynamics and the microscale balanced hot tower (BHT) dynamics involve simplified balanced equations without gravity waves for vertical vorticity amplification due to moist heat sources and incorporate nonlinear advective fluxes across scales. The BMV model is the central one for tropical cyclogenesis in the embryo. The moist mesoscale wave (MMW) dynamics involves simplified equations for mesoscale moisture fluctuations, as well as linear hydrostatic waves driven by heat sources from moisture and eddy flux divergences. A simplified cloud physics model for deep convection is introduced here and used to study moist axisymmetric plumes in the BHT model. A simple application in periodic geometry involving the effects of mesoscale vertical shear and moist microscale hot towers on vortex amplification is developed here to illustrate features of the coupled multi-scale models. These results illustrate the use of these models in isolating key mechanisms in the embryo in a simplified content. C1 [Majda, Andrew J.] NYU, Courant Inst Math Sci, Dept Math & Climate Atmosphere & Ocean Sci, New York, NY 10012 USA. [Xing, Yulong] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. [Xing, Yulong] Univ Tennessee, Dept Math, Knoxville, TN 37996 USA. [Mohammadian, Majid] Univ Ottawa, Dept Civil Engn, Ottawa, ON K1N 6N5, Canada. RP Majda, AJ (reprint author), NYU, Courant Inst Math Sci, Dept Math & Climate Atmosphere & Ocean Sci, 251 Mercer St, New York, NY 10012 USA. EM majda@cims.nyu.edu RI Mohammadian, Abdolmajid/A-2995-2015; xing, yulong/C-1484-2011 OI Mohammadian, Abdolmajid/0000-0001-5381-8189; FU National Science Foundation [DMS-0456713]; Office of Naval Research [N00014-05-1-0164] FX The research of A.J.M. is partially supported by the National Science Foundation grant DMS-0456713 and the Office of Naval Research grant N00014-05-1-0164. Y.X. has been supported as a post-doctoral fellow through these grants. NR 32 TC 9 Z9 9 U1 0 U2 3 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD AUG 25 PY 2010 VL 657 BP 478 EP 501 DI 10.1017/S0022112010001515 PG 24 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 642PB UT WOS:000281227200020 ER PT J AU Lee, H Dean, C Isacoff, E AF Lee, Hanson Dean, Camin Isacoff, Ehud TI Alternative Splicing of Neuroligin Regulates the Rate of Presynaptic Differentiation SO JOURNAL OF NEUROSCIENCE LA English DT Article ID EXCITATORY SYNAPSE FORMATION; CELL-ADHESION MOLECULES; COMPLEX-FORMATION; ALPHA-NEUREXINS; BETA-NEUREXINS; ACTIVE ZONES; LIVE CELLS; VESICLE; BINDING; MULTIMERIZATION AB Neuroligins (NLGs) and Neurexins (NRXs) are important adhesion molecules that promote synapse formation. Multiple splice variants of NLG and NRX exist, but their specific functions are unclear. Here we report that a surrogate postsynaptic cell expressing full-length NLG-1 triggers slow presynaptic differentiation in a contacting axon. In contrast, a version of NLG-1, which lacks insert B (NLG-1 Delta B), induces rapid presynaptic differentiation, reaching the rate seen at native neuronal synapses. We show that this acceleration is attributed to the removal of the N-linked glycosylation site within insert B. NLG-1 Delta B also increases synaptic density at neuro-neuronal synapses more than does full-length NLG-1. Other postsynaptic adhesion proteins, such as N-cadherin, EphB2, and SynCAM-1, alone or in combination with full-length NLG-1, do not trigger fast differentiation, suggesting that rapid presynaptic differentiation depends on a unique interaction of NLG-1 Delta B with axonal proteins. Indeed, we find that NLG-1 Delta B recruits more axonal alpha-NRX. Our results suggest that the engagement of alpha-NRX is a key to rapid induction of synapses at new sites of axo-dendritic contact. C1 [Lee, Hanson; Dean, Camin; Isacoff, Ehud] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. [Isacoff, Ehud] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Isacoff, E (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, MC 3200,279 Life Sci Addit, Berkeley, CA 94720 USA. EM ehud@berkeley.edu FU National Institutes of Health [RO1NS050833, T32 GM007048]; Nanomedicine Development Center for the Optical Control of Biological Function [5PN2EY018241]; National Science Foundation [0437079] FX This work was supported by National Institutes of Health Grant RO1NS050833 (E.I.) and Training Grant T32 GM007048 (C.D.), Nanomedicine Development Center for the Optical Control of Biological Function Grant 5PN2EY018241 (E.I.), and National Science Foundation Integrative Graduate Education and Research Traineeship Program Grant 0437079 (H.L.). We thank T. Sudhof for SynCAM-1, L. Reichardt for GFP-CASK, E.D. Gundelfinger for Bassoon-GFP, R. Tsien for mRFP, C. Kaether for Synaptophysin-GFP, F. Irie for EphB2, and E. Kim for NGL-2. We also warmly thank S. DeMaria for initiating the project, S. Wiese for general technical assistance, I. Hafez for assistance with FM staining, H. Aaron and T. Machen for help with confocal imaging and microscopy equipment, S. Pautot for helpful discussion, G. Agarwal for aid in image analysis programming, and O. Tulyathan for the blind analysis of Bassoon immunostaining for the shRNA knockdown experiment. NR 49 TC 20 Z9 20 U1 0 U2 1 PU SOC NEUROSCIENCE PI WASHINGTON PA 11 DUPONT CIRCLE, NW, STE 500, WASHINGTON, DC 20036 USA SN 0270-6474 J9 J NEUROSCI JI J. Neurosci. PD AUG 25 PY 2010 VL 30 IS 34 BP 11435 EP 11446 DI 10.1523/JNEUROSCI.2946-10.2010 PG 12 WC Neurosciences SC Neurosciences & Neurology GA 643BQ UT WOS:000281268200021 PM 20739565 ER PT J AU Gupta, AK Nisoli, C Lammert, PE Crespi, VH Eklund, PC AF Gupta, Awnish K. Nisoli, Cristiano Lammert, Paul E. Crespi, Vincent H. Eklund, Peter C. TI Curvature-induced D-band Raman scattering in folded graphene SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID CARBON NANOTUBES; GRAPHITE; PHONONS AB Micro-Raman scattering from folds in single-layer graphene sheets finds a D-band at the fold for both incommensurate and commensurate folding, while the parent single-layer graphene lacks a D-band. A coupled elastic-continuum/tight-binding calculation suggests that this D-band arises from the spatially inhomogeneous curvature around a fold in a graphene sheet. The polarization dependence of the fold-induced D-band further reveals that the inhomogeneous curvature acts as a very smooth, ideal one-dimensional defect along the folding direction. C1 [Gupta, Awnish K.; Lammert, Paul E.; Crespi, Vincent H.; Eklund, Peter C.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA. [Nisoli, Cristiano] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Crespi, Vincent H.; Eklund, Peter C.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA. [Crespi, Vincent H.; Eklund, Peter C.] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA. RP Crespi, VH (reprint author), Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA. EM crespi@phys.psu.edu OI Crespi, Vincent/0000-0003-3846-3193; Nisoli, Cristiano/0000-0003-0053-1023 FU NSF [NIRT ECS-0609243] FX This work was supported by the NSF NIRT ECS-0609243. We acknowledge contribution of Ke Zou in acquiring AFM images. NR 25 TC 14 Z9 14 U1 2 U2 15 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD AUG 25 PY 2010 VL 22 IS 33 SI SI AR 334205 DI 10.1088/0953-8984/22/33/334205 PG 6 WC Physics, Condensed Matter SC Physics GA 633ZY UT WOS:000280548200006 PM 21386495 ER PT J AU Arceo, E Ellman, JA Bergman, RG AF Arceo, Elena Ellman, Jonathan A. Bergman, Robert G. TI Rhenium-Catalyzed Didehydroxylation of Vicinal Dials to Alkenes Using a Simple Alcohol as a Reducing Agent SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID OXO COMPLEX; DEOXYGENATION; 1,2-PROPANEDIOL; EXTRUSION; BIOMASS; GLYCOL; ROUTES; BONDS; DIOLS AB A new method for the catalytic didehydroxylation of vicinal diols is described. Employing a readily available low-valent rhenium carbonyl complex and a simple alcohol as a reducing agent, both terminal and internal vicinal diols are deoxygenated to olefins in good yield. The optional addition of acid (TsOH, H(2)SO(4)) provides access to lower reaction temperatures. This new system enables the transformation of a four-carbon sugar polyol into an oxygen-reduced compound, providing promising evidence for its practical application to produce unsaturated compounds from biomass-derived materials. C1 [Ellman, Jonathan A.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Ellman, JA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM jonathan.ellman@yale.edu; rbergman@berkeley.edu RI Ellman, Jonathan/C-7732-2013 FU Dow Chemical Co. FX The authors gratefully acknowledge financial support from the Dow Chemical Co. NR 22 TC 71 Z9 71 U1 7 U2 48 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 AUG 25 PY 2010 VL 132 IS 33 BP 11408 EP 11409 DI 10.1021/ja103436v PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 640QL UT WOS:000281066400007 PM 20669903 ER PT J AU Perez, A Tuckerman, ME Hjalmarson, HP von Lilienfeld, OA AF Perez, Alejandro Tuckerman, Mark E. Hjalmarson, Harold P. von Lilienfeld, O. Anatole TI Enol Tautomers of Watson-Crick Base Pair Models Are Metastable Because of Nuclear Quantum Effects SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID DOUBLE-PROTON-TRANSFER; DENSITY-FUNCTIONAL THEORY; ELECTRONIC-STRUCTURE CALCULATIONS; BORN-OPPENHEIMER APPROXIMATION; MOLECULAR-ORBITAL CALCULATIONS; HYDROGEN-TRANSFER MECHANISM; AB-INITIO; ADENINE-THYMINE; TRANSMISSION COEFFICIENT; STATISTICAL-MECHANICS AB Intermolecular enol tautomers of Watson-Crick base pairs could emerge spontaneously via interbase double proton transfer. It has been hypothesized that their formation could be facilitated by thermal fluctuations and proton tunneling, and possibly be relevant to DNA damage. Theoretical and computational studies, assuming classical nuclei, have confirmed the dynamic stability of these rare tautomers. However, by accounting for nuclear quantum effects explicitly through Car-Parrinello path integral molecular dynamics calculations, we find the tautomeric enol form to be dynamically metastable, with lifetimes too insignificant to be implicated in DNA damage. C1 [Hjalmarson, Harold P.; von Lilienfeld, O. Anatole] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Perez, Alejandro; Tuckerman, Mark E.] NYU, Dept Chem, New York, NY 10003 USA. [Tuckerman, Mark E.] NYU, Courant Inst Math Sci, New York, NY 10003 USA. RP von Lilienfeld, OA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM oavonli@sandia.gov RI von Lilienfeld, O. Anatole/D-8529-2011 FU Computer Science Research Institute; NSF [CHE-0704036]; United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]; [120209] FX The authors thank A. E. Mattsson and P. A. Schultz for many discussions. A.P. is grateful for support from SNL's summer student internship program at the Computer Science Research Institute. M.E.T. acknowledges support from NSF CHE-0704036. O.A.v.L. acknowledges support from SNL's LDRD Truman program, No. 120209. 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 80 TC 35 Z9 35 U1 0 U2 20 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 AUG 25 PY 2010 VL 132 IS 33 BP 11510 EP 11515 DI 10.1021/ja102004b PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA 640QL UT WOS:000281066400036 PM 20681591 ER PT J AU Khakshoor, O Lin, AJ Korman, TP Sawaya, MR Tsai, SC Eisenberg, D Nowick, JS AF Khakshoor, Omid Lin, Aaron J. Korman, Tyler P. Sawaya, Michael R. Tsai, Shiou-Chuan Eisenberg, David Nowick, James S. TI X-ray Crystallographic Structure of an Artificial beta-Sheet Dimer SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID RHESUS-MACAQUE LEUKOCYTES; CHEMICAL-MODEL SYSTEMS; QUATERNARY STRUCTURE; CRYSTAL-STRUCTURE; AMYLOID FIBRILS; 3-DIMENSIONAL STRUCTURE; ATOMIC-STRUCTURE; PEPTIDE; NMR; DEFENSIN AB This paper describes the X-ray crystallographic structure of a designed cyclic beta-sheet peptide that forms a well-defined hydrogen-bonded dimer that mimics beta-sheet dinners formed by proteins. The 54-membered ring macrocyclic peptide (la) contains molecular template and turn units that induce beta-sheet structure in a heptapeptide strand that forms the dimerization interface. The X-ray crystallographic structure reveals the structures of the two "Hao" amino acids that help template the beta-sheet structure and the two delta-linked ornithine turn units that link the Hao-containing template to the heptapeptide beta-strand. The Hao amino acids adopt a conformation that resembles a tripeptide in a beta-strand conformation, with one edge of the Hao unit presenting an alternating array of hydrogen-bond donor and acceptor groups in the same pattern as that of a tripeptide beta-strand. The delta-linked ornithines adopt a conformation that resembles a hydrogen-bonded beta-turn, in which the ornithine takes the place of the i+1 and i+2 residues. The dimers formed by macrocyclic beta-sheet la resemble the dimers of many proteins, such as defensin HNP-3, the lambda-Cro repressor, interleukin 8, and the ribonuclease H domain of HIV-1 reverse transcriptase. The dimers of la self-assemble in the solid state into a barrel-shaped trimer of dimers in which the three dimers are arranged in a triangular fashion. Molecular modeling in which one of the three dimers is removed and the remaining two dimers are aligned face-to-face provides a model of the dimers of dimers of closely related macrocyclic beta-sheet peptides that were observed in solution. C1 [Khakshoor, Omid; Lin, Aaron J.; Korman, Tyler P.; Tsai, Shiou-Chuan; Nowick, James S.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. [Sawaya, Michael R.; Eisenberg, David] UCLA DOE Inst Genom & Prote, Howard Hughes Med Inst, Los Angeles, CA 90095 USA. RP Nowick, JS (reprint author), Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. EM jsnowick@uci.edu RI Eisenberg, David/E-2447-2011 FU National Institutes of Health [GM-49076, AG-029430]; Pew Foundation; HHMI FX Dedicated to the memory of Warren DeLano. J.S.N. and O.K. thank the National Institutes of Health for grant support (GM-49076). S.-C.T. and T.P.K. thank the Pew Foundation. D.E. and M.R.S. thank the HHMI and National Institutes of Health (AG-029430). NR 48 TC 23 Z9 24 U1 0 U2 14 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 AUG 25 PY 2010 VL 132 IS 33 BP 11622 EP 11628 DI 10.1021/ja103438w PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA 640QL UT WOS:000281066400049 PM 20669960 ER PT J AU Sletten, EM Nakamura, H Jewett, JC Bertozzi, CR AF Sletten, Ellen M. Nakamura, Hitomi Jewett, John C. Bertozzi, Carolyn R. TI Difluorobenzocyclooctyne: Synthesis, Reactivity, and Stabilization by beta-Cyclodextrin SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID FREE CLICK CHEMISTRY; EXISTENZ NIEDERGLIEDRIGER CYCLOALKINE; 1,3-DIPOLAR CYCLOADDITIONS; ORGANIC-SYNTHESIS; COPPER-FREE; EFFICIENT SYNTHESIS; LIVING CELLS; CYCLOBUTADIENE; KETONES; AZIDE AB Highly reactive cyclooctynes have been sought as substrates for Cu-free cycloaddition reactions with azides in biological systems. To elevate the reactivities of cyclooctynes, two strategies, LUMO lowering through propargylic fluorination and strain enhancement through fused aryl rings, have been explored. Here we report the facile synthesis of a difluorobenzocyclooctyne (DIFBO) that combines these modifications. DIFBO was so reactive that it spontaneously trimerized to form two asymmetric products that we characterized by X-ray crystallography. However, we were able to trap DIFBO by forming a stable inclusion complex with beta-cyclodextrin in aqueous media. This complex could be stored as a lyophilized powder and then dissociated in organic solvents to produce free DIFBO for in situ kinetic and spectroscopic analysis. Using this procedure, we found that the rate constant for the cycloaddition reaction of DIFBO with an azide exceeds those for difluorinated cyclooctyne (DIFO) and dibenzocyclooctyne (DIBO). Cyclodextrin complexation is therefore a promising approach for stabilizing compounds that possess the high intrinsic reactivities desired for Cu-free click chemistry. C1 [Sletten, Ellen M.; Nakamura, Hitomi; Jewett, John C.; Bertozzi, Carolyn R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Bertozzi, Carolyn R.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. [Bertozzi, Carolyn R.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA. [Bertozzi, Carolyn R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA. RP Bertozzi, CR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM crb@berkeley.edu FU American Chemical Society Division of Organic Chemistry (Genentech); Amgen; American Cancer Society; National Institutes of Health [GM58867] FX We thank Dr. A. DiPasquale for the X-ray crystallography and Dr. C. Canlas for the CPMAS NMR experiments. Additionally, we thank Dr. C. Canlas and Dr. R. Nunlist for help with the 19F NMR experiments. E.M.S. was supported by a predoctoral fellowship from the American Chemical Society Division of Organic Chemistry (Genentech). H.N. was partially supported by the Amgen Scholars Program. J.C.J. was supported by a postdoctoral fellowship from the American Cancer Society. This work was supported by a grant to C.R.B. from the National Institutes of Health (GM58867). We thank K. Dehnert for critical reading of the manuscript. NR 62 TC 67 Z9 67 U1 4 U2 66 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 AUG 25 PY 2010 VL 132 IS 33 BP 11799 EP 11805 DI 10.1021/ja105005t PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA 640QL UT WOS:000281066400069 PM 20666466 ER PT J AU Stoll, S NejatyJahromy, Y Woodward, JJ Ozarowski, A Marletta, MA Britt, RD AF Stoll, Stefan NejatyJahromy, Yaser Woodward, Joshua J. Ozarowski, Andrew Marletta, Michael A. Britt, R. David TI Nitric Oxide Synthase Stabilizes the Tetrahydrobiopterin Cofactor Radical by Controlling Its Protonation State SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID ELECTRON-PARAMAGNETIC-RESONANCE; HYPERFINE COUPLING-CONSTANTS; NUCLEAR DOUBLE-RESONANCE; HEME-DIOXY REDUCTION; HIGH-FIELD EPR; SPIN-RESONANCE; DNA PHOTOLYASE; G-TENSORS; RIBONUCLEOTIDE REDUCTASE; TETRAHYDROFOLIC ACID AB Nitric oxide synthase (NOS), a homodimeric enzyme with a flavin reductase domain and a P450-type heme-containing oxygenase domain, catalyzes the formation of NO from L-arginine, NADPH, and O(2) in a two-step reaction sequence. In the first step, a tetrahydrobiopterin (H(4)B) cofactor bound near one of the heme propionate groups acts as an electron donor to the P450-type heme active site, yielding a one-electron oxidized radical that is subsequently re-reduced. In solution, H(4)B undergoes two-electron oxidation, showing that the enzyme significantly alters the proton- and electron-transfer properties of the cofactor. Multifrequency EPR and ENDOR spectroscopy were used to determine magnetic parameters, and from them the (de)protonation state of the H(4)B radical in the oxygenase domain dimer of inducible NO synthase that was trapped by rapid freeze quench. From 9.5 and 330-416 GHz EPR and from 34 GHz (1)H ENDOR spectroscopy, the g tensor of the radical and the hyperfine tensors of several N and H nuclei in the radical were obtained. Density functional theory calculations at the PBE0/EPR-II level for H(4)B radical models predict different spin density distributions and g and hyperfine tensors for different protonation states. Comparison of the predicted and experimental values leads to the conclusion that the radical is cationic H(4)B(center dot+), suggesting that NOS stabilizes this protonated form to utilize the cofactor in a unique dual one-electron redox role, where it can deliver an electron to the active site for reductive oxygen activation and also remove an electron from the active site to generate NO and not NO(-). The protein environment also prevents further oxidation and subsequent loss of function of the cofactor, thus enabling the enzyme to perform the unusual catalytic one-electron chemistry. C1 [Stoll, Stefan; NejatyJahromy, Yaser; Britt, R. David] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. [Woodward, Joshua J.; Marletta, Michael A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem, Berkeley, CA 94720 USA. [Woodward, Joshua J.; Marletta, Michael A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mol & Cellular Biol, Inst QB3, Berkeley, CA 94720 USA. [Woodward, Joshua J.; Marletta, Michael A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys Biosci, Berkeley, CA 94720 USA. [Ozarowski, Andrew] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. RP Britt, RD (reprint author), Univ Calif Davis, Dept Chem, 1 Shields Ave, Davis, CA 95616 USA. EM rdbritt@ucdavis.edu RI Stoll, Stefan/C-5225-2008 OI Stoll, Stefan/0000-0003-4255-9550 FU NIH [GM073789]; NSF [DMR-0654118]; State of Florida; DOE FX This work was supported by NIH grant GM073789 (R.D.B.) and by the NHMFL, which is funded by the NSF (DMR-0654118), the State of Florida, and the DOE. NR 109 TC 36 Z9 37 U1 1 U2 19 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 AUG 25 PY 2010 VL 132 IS 33 BP 11812 EP 11823 DI 10.1021/ja105372s PG 12 WC Chemistry, Multidisciplinary SC Chemistry GA 640QL UT WOS:000281066400071 PM 20669954 ER PT J AU Sau, JD Leslie, SR Cohen, ML Stamper-Kurn, DM AF Sau, Jay D. Leslie, Sabrina R. Cohen, Marvin L. Stamper-Kurn, Dan M. TI Spin squeezing of high-spin, spatially extended quantum fields SO NEW JOURNAL OF PHYSICS LA English DT Article ID BOSE-EINSTEIN CONDENSATE; GASES; ENTANGLEMENT; DYNAMICS; ATOMS AB Investigations of spin squeezing in ensembles of quantum particles have been limited primarily to a subspace of spin fluctuations and a single spatial mode in high-spin and spatially extended ensembles. Here, we show that a wider range of spin squeezing is attainable in ensembles of high-spin atoms, characterized by sub-quantum-limited fluctuations in several independent planes of spin-fluctuation observables. Further, considering the quantum dynamics of an f = 1 ferromagnetic spinor Bose-Einstein condensate, we demonstrate theoretically that a high degree of spin squeezing is attained in multiple spatial modes of a spatially extended quantum field and that such squeezing can be extracted from spatially resolved measurements of magnetization and nematicity, i.e. the vector and quadrupole magnetic moments, of the quantum gas. Taking into account several experimental limitations, we predict that the variance of the atomic magnetization and nematicity may be reduced as far as 20 dB below the standard quantum limits. C1 [Sau, Jay D.; Leslie, Sabrina R.; Cohen, Marvin L.; Stamper-Kurn, Dan M.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Sau, Jay D.] Univ Maryland, Condensed Matter Theory Ctr, College Pk, MD 20742 USA. [Sau, Jay D.] Univ Maryland, Joint Quantum Inst, Dept Phys, College Pk, MD 20742 USA. [Cohen, Marvin L.; Stamper-Kurn, Dan M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Stamper-Kurn, DM (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM dmsk@berkeley.edu RI Stamper-Kurn, Dan/B-5442-2015; Leslie, Sabrina/M-3626-2016 OI Stamper-Kurn, Dan/0000-0002-4845-5835; FU NSF; DARPA OLE program; LDRD [DE-AC02-05CH11231]; Miller Institute for Basic Research in Science; JQI-NSF-PFC FX This work was supported by the NSF and the Army Research Office with funding from the DARPA OLE program. Partial personnel and equipment support was provided by the LDRD Program of LBNL under the Department of Energy contract no. DE-AC02-05CH11231. DMS- K acknowledges support from the Miller Institute for Basic Research in Science, and JS acknowledges the JQI-NSF-PFC for support. NR 31 TC 14 Z9 14 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD AUG 25 PY 2010 VL 12 AR 085011 DI 10.1088/1367-2630/12/8/085011 PG 18 WC Physics, Multidisciplinary SC Physics GA 643FD UT WOS:000281280100001 ER PT J AU Cherepkov, NA Semenov, SK Schoffler, MS Titze, J Petridis, N Jahnke, T Cole, K Schmidt, LPH Czasch, A Akoury, D Jagutzki, O Williams, JB Osipov, T Lee, S Prior, MH Belkacem, A Landers, AL Schmidt-Bocking, H Dorner, R Weber, T AF Cherepkov, N. A. Semenov, S. K. Schoeffler, M. S. Titze, J. Petridis, N. Jahnke, T. Cole, K. Schmidt, L. Ph. H. Czasch, A. Akoury, D. Jagutzki, O. Williams, J. B. Osipov, T. Lee, S. Prior, M. H. Belkacem, A. Landers, A. L. Schmidt-Boecking, H. Doerner, R. Weber, Th. TI Auger decay of 1 sigma(g) and 1 sigma(u) hole states of the N-2 molecule. II. Young-type interference of Auger electrons and its dependence on internuclear distance SO PHYSICAL REVIEW A LA English DT Article ID VIBRATIONALLY RESOLVED PHOTOIONIZATION; PHOTOELECTRON ANGULAR-DISTRIBUTION; K-SHELL PHOTOIONIZATION; IN-SPACE MOLECULES; MOMENTUM SPECTROSCOPY; DOUBLE-SLIT; RECOIL-ION; H-2; CO; DISTRIBUTIONS AB Theoretical two-center interference patterns produced (i) by the K-shell photoionization process of the N-2 molecule and (ii) by the Auger decay process of the K-shell hole state of the N-2 molecule are compared for the case of equal photo- and Auger-electron energies of about 360 eV. The comparison shows that both the angular distribution of the photoelectrons and the angular distribution of the Auger electrons of equal energy in the molecular frame are primarily defined by the Young interference. The experimental data for the angular resolved K-shell Auger electrons as a function of the kinetic-energy release (KER) obtained earlier [Phys. Rev. A 81, 043426 (2010)] have been renormalized in order to visualize the angular variation in the regions of low Auger-electron intensities. That renormalized data are compared with the corresponding theoretical results. From the known behavior of the potential energy curves, the connection between the KER and the internuclear distance can be established. Since the Young interference pattern is sensitive to the internuclear distance in the molecule, from the measured KER dependence of the Young interference pattern one can trace the behavior of the Auger-electron angular distribution for different molecular terms as a function of internuclear distance. The results of that analysis are in a good agreement with the corresponding theoretical predictions. C1 [Cherepkov, N. A.; Semenov, S. K.] State Univ Aerosp Instrumentat, St Petersburg 190000, Russia. [Cherepkov, N. A.; Schoeffler, M. S.; Titze, J.; Petridis, N.; Jahnke, T.; Cole, K.; Schmidt, L. Ph. H.; Czasch, A.; Akoury, D.; Jagutzki, O.; Schmidt-Boecking, H.; Doerner, R.] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany. [Akoury, D.; Osipov, T.; Lee, S.; Prior, M. H.; Belkacem, A.; Weber, Th.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Williams, J. B.; Landers, A. L.] Auburn Univ, Dept Phys, Auburn, AL 36849 USA. RP Cherepkov, NA (reprint author), State Univ Aerosp Instrumentat, St Petersburg 190000, Russia. RI Doerner, Reinhard/A-5340-2008; Landers, Allen/C-1213-2013; Weber, Thorsten/K-2586-2013; Schoeffler, Markus/B-6261-2008 OI Doerner, Reinhard/0000-0002-3728-4268; Weber, Thorsten/0000-0003-3756-2704; Schoeffler, Markus/0000-0001-9214-6848 FU Deutsche Forschungsgemeinschaft; office of Basic Energy Sciences, Division of Chemical Sciences of the US DOE [DE-AC03-76SF00098, DE-FG02-07ER46357]; RFBR [09-03-00781-a] FX We acknowledge outstanding support by the staff of the Advanced Lights Source, in particular by Hendrik Bluhm and Tolek Tyliszczak. The work was supported by the Deutsche Forschungsgemeinschaft and by the office of Basic Energy Sciences, Division of Chemical Sciences of the US DOE under Contracts No. DE-AC03-76SF00098 and No. DE-FG02-07ER46357. N.A.C. acknowledges the financial support of Deutsche Forschungsgemeinschaft. S. K. S. and N.A.C. acknowledge the hospitality of the Goethe University in Frankfurt am Main and the financial support of RFBR (Grant No. 09-03-00781-a). NR 35 TC 14 Z9 14 U1 3 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD AUG 25 PY 2010 VL 82 IS 2 AR 023420 DI 10.1103/PhysRevA.82.023420 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 642OM UT WOS:000281225400009 ER PT J AU Tian, W Ratcliff, W Kim, MG Yan, JQ Kienzle, PA Huang, Q Jensen, B Dennis, KW McCallum, RW Lograsso, TA McQueeney, RJ Goldman, AI Lynn, JW Kreyssig, A AF Tian, W. Ratcliff, W., II Kim, M. G. Yan, J. -Q. Kienzle, P. A. Huang, Q. Jensen, B. Dennis, K. W. McCallum, R. W. Lograsso, T. A. McQueeney, R. J. Goldman, A. I. Lynn, J. W. Kreyssig, A. TI Interplay of Fe and Nd magnetism in NdFeAsO single crystals SO PHYSICAL REVIEW B LA English DT Article ID LAYERED QUATERNARY COMPOUND; PHASE-DIAGRAM; SUPERCONDUCTIVITY; TRANSITIONS AB The structural and magnetic phase transitions have been studied on NdFeAsO single crystals by neutron and x-ray diffraction complemented by resistivity and specific-heat measurements. Two low-temperature phase transitions have been observed in addition to the tetragonal-to-orthorhombic transition at T(S) similar to 142 K and the onset of antiferromagnetic (AFM) Fe order below T(N) similar to 137 K. The Fe moments order AFM in the well-known stripelike structure in the (ab) plane but change from AFM to ferromagnetic (FM) arrangement along the c direction below T* similar to 15 K accompanied by the onset of Nd AFM order below T(Nd) similar to 6 K with this same AFM configuration. The iron magnetic order-order transition in NdFeAsO accentuates the Nd-Fe interaction and the delicate balance of c-axis exchange couplings that results in AFM in LaFeAsO and FM in CeFeAsO and PrFeAsO. C1 [Tian, W.; Kim, M. G.; Yan, J. -Q.; Jensen, B.; Dennis, K. W.; McCallum, R. W.; Lograsso, T. A.; McQueeney, R. J.; Goldman, A. I.; Kreyssig, A.] Ames Lab, Ames, IA 50011 USA. [Ratcliff, W., II; Kienzle, P. A.; Huang, Q.; Lynn, J. W.] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA. [Kim, M. G.; McQueeney, R. J.; Goldman, A. I.; Kreyssig, A.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [McCallum, R. W.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. RP Tian, W (reprint author), Ames Lab, Ames, IA 50011 USA. RI Kim, Min Gyu/B-8637-2012; Tian, Wei/C-8604-2013; McQueeney, Robert/A-2864-2016 OI Kim, Min Gyu/0000-0001-7676-454X; Tian, Wei/0000-0001-7735-3187; McQueeney, Robert/0000-0003-0718-5602 FU U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering and Scientific User Facilities Division; Iowa State University [DE-AC02-07CH11358] FX Research at Ames Laboratory and Oak Ridge National Laboratory was supported by the U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering and Scientific User Facilities Division, respectively. Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358. NR 29 TC 32 Z9 32 U1 0 U2 23 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 25 PY 2010 VL 82 IS 6 AR 060514 DI 10.1103/PhysRevB.82.060514 PG 4 WC Physics, Condensed Matter SC Physics GA 642OO UT WOS:000281225700002 ER PT J AU Walkosz, W Klie, RF Ogut, S Mikijelj, B Pennycook, SJ Pantelides, ST Idrobo, JC AF Walkosz, Weronika Klie, Robert F. Ogut, Serdar Mikijelj, Biljana Pennycook, Stephen J. Pantelides, Sokrates T. Idrobo, Juan C. TI Crystal-induced effects at crystal/amorphous interfaces: The case of Si3N4/SiO2 SO PHYSICAL REVIEW B LA English DT Article ID SILICON-NITRIDE CERAMICS; RARE-EARTH-ELEMENTS; MECHANICAL-PROPERTIES; INTERGRANULAR FILMS; GROWTH AB We reveal the presence of atomic short-range ordering at the interface between crystalline beta-Si3N4 and amorphous SiO2 using aberration-corrected scanning transmission electron microscopy. We show that the first atomic layers of the amorphous SiO2 film reconstruct taking on the crystalline form of Si3N4. Furthermore, we find that there is a nonuniform interatomic mixing of oxygen and nitrogen at different atomic sites at the interface. The work provides a direct look at the atomic structure of crystal/amorphous interfaces composed of light elements. C1 [Walkosz, Weronika; Klie, Robert F.; Ogut, Serdar; Idrobo, Juan C.] Univ Illinois, Dept Phys, Chicago, IL 60607 USA. [Mikijelj, Biljana] Ceradyne Inc, Costa Mesa, CA 92626 USA. [Pennycook, Stephen J.; Pantelides, Sokrates T.; Idrobo, Juan C.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. [Pennycook, Stephen J.; Pantelides, Sokrates T.; Idrobo, Juan C.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. RP Walkosz, W (reprint author), Univ Illinois, Dept Phys, Chicago, IL 60607 USA. RI Ogut, Serdar/B-1749-2012; Idrobo, Juan/H-4896-2015 OI Idrobo, Juan/0000-0001-7483-9034 FU NSF [DMR-0605964]; DOE [DE-F002-09ER46554]; Office of Basic Energy Sciences, Materials Sciences and Engineering Division, U.S. Department of Energy; Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy; McMinn Endowment; National Science Foundation FX The work was supported by the NSF under Grant No. DMR-0605964 (W.W., R.F.K., and J.C.I.), DOE grant DE-F002-09ER46554 (S.T.P.), the Office of Basic Energy Sciences, Materials Sciences and Engineering Division, U.S. Department of Energy (S.J.P. and S.T.P.), the SHaRE User Facility (J.C.I.), which is sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy, and by the McMinn Endowment (S.T.P.) at Vanderbilt University. S.O. acknowledges support by the National Science Foundation under the Independent Research/Development program while working at the Foundation. NR 28 TC 7 Z9 7 U1 2 U2 12 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 25 PY 2010 VL 82 IS 8 AR 081412 DI 10.1103/PhysRevB.82.081412 PG 4 WC Physics, Condensed Matter SC Physics GA 642OT UT WOS:000281226200001 ER PT J AU Aaltonen, T Adelman, J Gonzalez, BA Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Barria, P Bartos, P Bauer, G Beauchemin, PH Bedeschi, F Beecher, D Behari, S Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bizjak, I Blair, RE Blocker, C Blumenfeld, B Bocci, A Bodek, A Boisvert, V Bortoletto, D Boudreau, J Boveia, A Brau, B Bridgeman, A Brigliadori, L Bromberg, C Brubaker, E Budagov, J Budd, HS Budd, S Burkett, K Busetto, G Bussey, P Buzatu, A Byrum, KL Cabrera, S Calancha, C Camarda, S Campanelli, M Campbell, M Canelli, F Canepa, A Carls, B Carlsmith, D Carosi, R Carrillo, S Carron, S Casal, B Casarsa, M Castro, A Catastini, P Cauz, D Cavaliere, V Cavalli-Sforza, M Cerri, A Cerrito, L Chang, SH Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Cho, K Chokheli, D Chou, JP Chung, K Chung, WH Chung, YS Chwalek, T Ciobanu, CI Ciocci, MA Clark, A Clark, D Compostella, G Convery, ME Conway, J Corbo, M Cordelli, M Cox, CA Cox, DJ Crescioli, F Almenar, CC Cuevas, J Culbertson, R Cully, JC Dagenhart, D d'Ascenzo, N Datta, M Davies, T de Barbaro, P De Cecco, S Deisher, A De Lorenzo, G Dell'Orso, M Deluca, C Demortier, L Deng, J Deninno, M d'Errico, M Di Canto, A Di Ruzza, B Dittmann, JR D'Onofrio, M Donati, S Dong, P Dorigo, T Dube, S Ebina, K Elagin, A Erbacher, R Errede, D Errede, S Ershaidat, N Eusebi, R Fang, HC Farrington, S Fedorko, WT Feild, RG Feindt, M Fernandez, JP Ferrazza, C Field, R Flanagan, G Forrest, R Frank, MJ Franklin, M Freeman, JC Furic, I Gallinaro, M Galyardt, J Garberson, F Garcia, JE Garfinkel, AF Garosi, P Gerberich, H Gerdes, D Gessler, A Giagu, S Giakoumopoulou, V Giannetti, P Gibson, K Gimmell, JL Ginsburg, CM Giokaris, N Giordani, M Giromini, P Giunta, M Giurgiu, G Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Golossanov, A Gomez, G Gomez-Ceballos, G Goncharov, M Gonzalez, O Gorelov, I Goshaw, AT Goulianos, K Gresele, A Grinstein, S Grosso-Pilcher, C Group, RC Grundler, U da Costa, JG Gunay-Unalan, Z Haber, C Hahn, SR Halkiadakis, E Han, BY Han, JY Happacher, F Hara, K Hare, D Hare, M Harr, RF Hartz, M Hatakeyama, K Hays, C Heck, M Heinrich, J Herndon, M Heuser, J Hewamanage, S Hidas, D Hill, CS Hirschbuehl, D Hocker, A Hou, S Houlden, M Hsu, SC Hughes, RE Hurwitz, M Husemann, U Hussein, M Huston, J Incandela, J Introzzi, G Iori, M Ivanov, A James, E Jang, D Jayatilaka, B Jeon, EJ Jha, MK Jindariani, S Johnson, W Jones, M Joo, KK Jun, SY Jung, JE Junk, TR Kamon, T Kar, D Karchin, PE Kato, Y Kephart, R Ketchum, W Keung, J Khotilovich, V Kilminster, B Kim, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kimura, N Kirsch, L Klimenko, S Kondo, K Kong, DJ Konigsberg, J Korytov, A Kotwal, AV Kreps, M Kroll, J Krop, D Krumnack, N Kruse, M Krutelyov, V Kuhr, T Kulkarni, NP Kurata, M Kwang, S Laasanen, AT Lami, S Lammel, S Lancaster, M Lander, RL Lannon, K Lath, A Latino, G Lazzizzera, I LeCompte, T Lee, E Lee, HS Lee, JS Lee, SW Leone, S Lester, C Lewis, JD Lin, CJ Linacre, J Lindgren, M Lipeles, E Lister, A Litvintsev, DO Liu, C Liu, T Lockyer, NS Loginov, A Lovas, L Lucchesi, D Lueck, J Lujan, P Lukens, P Lungu, G Lys, J Lysak, R MacQueen, D Madrak, R Maeshima, K Makhoul, K Maksimovic, P Malde, S Malik, S Manca, G Manousakis-Katsikakis, A Margaroli, F Marino, C Marino, CP Martin, A Martin, V Martinez, M Martinez-Ballarin, R Mastrandrea, P Mathis, M Mattson, ME Mazzanti, P McFarland, KS McIntyre, P McNulty, R Mehta, A Mehtala, P Menzione, A Mesropian, C Miao, T Mietlicki, D Miladinovic, N Miller, R Mills, C Milnik, M Mitra, A Mitselmakher, G Miyake, H Moed, S Moggi, N Mondragon, MN Moon, CS Moore, R Morello, MJ Morlock, J 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Yang, Y. C. Yao, W. M. Yeh, G. P. Yi, K. Yoh, J. Yorita, K. Yoshida, T. Yu, G. B. Yu, I. Yu, S. S. Yun, J. C. Zanetti, A. Zeng, Y. Zhang, X. Zheng, Y. Zucchelli, S. CA CDF Collaboration TI Measurement of Z gamma production in p(p)over-bar collisions at root s=1.96 TeV SO PHYSICAL REVIEW D LA English DT Article ID GAUGE-BOSON COUPLINGS; HADRON COLLIDERS AB The production rate and kinematics of photons produced in association with Z bosons are studied using 2 fb(-1) of p (p) over bar collision data collected at the Collider Detector at Fermilab. The cross section for p (p) over bar -> l(+)l(-)gamma + X ( where the leptons l are either muons or electrons with dilepton mass M(ll) > 40 GeV/c(2), and where the photon has transverse energy E(T)(gamma) > 7 GeV and is well separated from the leptons) is 4.6 +/- 0.2(stat) +/- 0.3 (syst) +/- 0.3 (lum) pb, which is consistent with standard model expectations. 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RI Introzzi, Gianluca/K-2497-2015; Piacentino, Giovanni/K-3269-2015; Martinez Ballarin, Roberto/K-9209-2015; Gorelov, Igor/J-9010-2015; Canelli, Florencia/O-9693-2016; Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; Lysak, Roman/H-2995-2014; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; manca, giulia/I-9264-2012; Amerio, Silvia/J-4605-2012; Punzi, Giovanni/J-4947-2012; Zeng, Yu/C-1438-2013; Annovi, Alberto/G-6028-2012; Ivanov, Andrew/A-7982-2013; Warburton, Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Moon, Chang-Seong/J-3619-2014; Scodellaro, Luca/K-9091-2014; Paulini, Manfred/N-7794-2014; Russ, James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera, Ignazio/E-9678-2015; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Chiarelli, Giorgio/E-8953-2012; Muelmenstaedt, Johannes/K-2432-2015 OI Introzzi, Gianluca/0000-0002-1314-2580; Piacentino, Giovanni/0000-0001-9884-2924; Martinez Ballarin, Roberto/0000-0003-0588-6720; Gorelov, Igor/0000-0001-5570-0133; Canelli, Florencia/0000-0001-6361-2117; Ruiz, Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052; Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643; Warburton, Andreas/0000-0002-2298-7315; Moon, Chang-Seong/0000-0001-8229-7829; Scodellaro, Luca/0000-0002-4974-8330; Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese /0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816; Muelmenstaedt, Johannes/0000-0003-1105-6678 FU U.S. Department of Energy; National Science Foundation; Italian Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports, Science, and Technology of Japan; Natural Sciences and Engineering Research Council of Canada; National Science Council of the Republic of China; Swiss National Science Foundation; A. P. Sloan Foundation; Bundesministerium fur Bildung und Forschung, Germany; World Class University Program; National Research Foundation of Korea; Science and Technology Facilities Council and the Royal Society, UK; Institut National de Physique Nucleaire et Physique des Particules/CNRS; Russian Foundation for Basic Research; Ministerio de Ciencia e Innovacion; Slovak RD Agency; Academy of Finland FX We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science, and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A. P. Sloan Foundation; the Bundesministerium fur Bildung und Forschung, Germany; the World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, UK; the Institut National de Physique Nucleaire et Physique des Particules/CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and the Academy of Finland. NR 17 TC 11 Z9 11 U1 2 U2 19 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD AUG 25 PY 2010 VL 82 IS 3 AR 031103 DI 10.1103/PhysRevD.82.031103 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 642OY UT WOS:000281226800002 ER PT J AU Aubert, B Karyotakis, Y Lees, JP Poireau, V Prencipe, E Prudent, X Tisserand, V Tico, JG Grauges, E Martinelli, M Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Battaglia, M Brown, DN Hooberman, B Kerth, LT Kolomensky, YG Lynch, G Osipenkov, IL Tackmann, K Tanabe, T Hawkes, CM Soni, N Watson, AT Koch, H Schroeder, T Asgeirsson, DJ Hearty, C Mattison, TS McKenna, JA Barrett, M Khan, A Randle-Conde, A Blinov, VE Bukin, AD Buzykaev, AR Druzhinin, VP Golubev, VB Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Todyshev, KY Bondioli, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Martin, EC Stoker, DP Atmacan, H Gary, JW Liu, F Long, O Vitug, GM Yasin, Z Sharma, V Campagnari, C Hong, TM Kovalskyi, D Mazur, MA Richman, JD Beck, TW Eisner, AM Heusch, CA Kroseberg, J Lockman, WS Martinez, AJ Schalk, T Schumm, BA Seiden, A Wang, L Winstrom, LO Cheng, CH Doll, DA Echenard, B Fang, F Hitlin, DG Narsky, I Ongmongkolkul, P Piatenko, T Porter, FC Andreassen, R Mancinelli, G Meadows, BT Mishra, K Sokoloff, MD Bloom, PC Ford, WT Gaz, A Hirschauer, JF Nagel, M Nauenberg, U Smith, JG Wagner, SR Ayad, R Toki, WH Feltresi, E Hauke, A Jasper, H Karbach, TM Merkel, J Petzold, A Spaan, B Wacker, K Kobel, MJ Nogowski, R Schubert, KR Schwierz, R Bernard, D Latour, E Verderi, M Clark, PJ Playfer, S Watson, JE Andreotti, M Bettoni, D Bozzi, C Calabrese, R Cecchi, A Cibinetto, G Fioravanti, E Franchini, P Luppi, E Munerato, M Negrini, M Petrella, A Piemontese, L Santoro, V Baldini-Ferroli, R Calcaterra, A De Sangro, R Finocchiaro, G Pacetti, S Patteri, P Peruzzi, IM Piccolo, M Rama, M Zallo, A Contri, R Guido, E Lo Vetere, M Monge, MR Passaggio, S Patrignani, C Robutti, E Tosi, S Morii, M Adametz, A Marks, J Schenk, S Uwer, U Bernlochner, FU Lacker, HM 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Godang, R Kroeger, R Sonnek, P Summers, DJ Zhao, HW Nguyen, X Simard, M Taras, P Nicholson, H De Nardo, G Lista, L Monorchio, D Onorato, G Sciacca, C Raven, G Snoek, HL Jessop, CP Knoepfel, KJ LoSecco, JM Wang, WF Corwin, LA Honscheid, K Kagan, H Kass, R Morris, JP Rahimi, AM Sekula, SJ Blount, NL Brau, J Frey, R Igonkina, O Kolb, JA Lu, M Rahmat, R Sinev, NB Strom, D Strube, J Torrence, E Castelli, G Gagliardi, N Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Sanchez, PDA Ben-Haim, E Bonneaud, GR Briand, H Chauveau, J Hamon, O Leruste, P Marchiori, G Ocariz, J Perez, A Prendki, J Sitt, S Gladney, L Biasini, M Manoni, E Angelini, C Batignani, G Bettarini, S Calderini, G Carpinelli, M Cervelli, A Forti, F Giorgi, MA Lusiani, A Morganti, M Neri, N Paoloni, E Rizzo, G Walsh, JJ Pegna, DL Lu, C Olsen, J Smith, AJS Telnov, AV Anulli, F Baracchini, E Cavoto, G Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Jackson, PD Gioi, LL Mazzoni, MA Morganti, S Piredda, G 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Luth, V. Lynch, H. L. MacFarlane, D. B. Marsiske, H. Messner, R. Muller, D. R. Neal, H. Nelson, S. O'Grady, C. P. Ofte, I. Perl, M. Ratcliff, B. N. Roodman, A. Salnikov, A. A. Schindler, R. H. Schwiening, J. Snyder, A. Su, D. Sullivan, M. K. Suzuki, K. Swain, S. K. Thompson, J. M. Va'vra, J. Wagner, A. P. Weaver, M. West, C. A. Wisniewski, W. J. Wittgen, M. Wright, D. H. Wulsin, H. W. Yarritu, A. K. Young, C. C. Ziegler, V. Chen, X. R. Liu, H. Park, W. Purohit, M. V. White, R. M. Wilson, J. R. Bellis, M. Burchat, P. R. Edwards, A. J. Miyashita, T. S. Ahmed, S. Alam, M. S. Ernst, J. A. Pan, B. Saeed, M. A. Zain, S. B. Soffer, A. Spanier, S. M. Wogsland, B. J. Eckmann, R. Ritchie, J. L. Ruland, A. M. Schilling, C. J. Schwitters, R. F. Wray, B. C. Drummond, B. W. Izen, J. M. Lou, X. C. Bianchi, F. Gamba, D. Pelliccioni, M. Bomben, M. Bosisio, L. Cartaro, C. Della Ricca, G. Lanceri, L. Vitale, L. Azzolini, V. Lopez-March, N. Martinez-Vidal, F. Milanes, D. A. Oyanguren, A. Albert, J. Banerjee, Sw. Bhuyan, B. Choi, H. H. F. Hamano, K. King, G. J. Kowalewski, R. Lewczuk, M. J. Nugent, I. M. Roney, J. M. Sobie, R. J. Gershon, T. J. Harrison, P. F. Ilic, J. Latham, T. E. Mohanty, G. B. Puccio, E. M. T. Band, H. R. Chen, X. Dasu, S. Flood, K. T. Pan, Y. Prepost, R. Vuosalo, C. O. Wu, S. L. TI Observation of the decay (B)over-bar(0) -> Lambda(+)(c)(p)over-bar pi(0) SO PHYSICAL REVIEW D LA English DT Article ID CHARMED BARYON; FINAL-STATES; B DECAYS AB In a sample of 467 x 10(6) B (B) over bar pairs collected with the BABAR detector at the PEP- II collider at SLAC we have observed the decay (B) over bar (0) -> Lambda(+)(c)(p) over bar pi(0) and measured the branching fraction to be (1.94 +/- 0.17 +/- 0.14 +/- 0.50 x 10(-4), where the uncertainties are statistical, systematic, and the uncertainty on the Lambda(+)(c) -> pK(-)pi(+) branching fraction, respectively. We determine an upper limit of 1.5 x 10(-6) at 90% C.L. for the product branching fraction B((B) over bar (0) -> Sigma(+)(c) (2455)(p) over bar) x B(Lambda(+)(c) -> pK(-) pi(+)). Furthermore, we observe an enhancement at the threshold of the invariant mass of the baryon- antibaryon pair. C1 [Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.] Univ Savoie, LAPP, CNRS, IN2P3, F-74941 Annecy Le Vieux, France. [Tisserand, V.; Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain. [Martinelli, M.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy. [Martinelli, M.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy. [Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway. [Battaglia, M.; Brown, D. N.; Hooberman, B.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tackmann, K.; Tanabe, T.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. 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[Lusiani, A.] Scuola Normale Super Pisa, I-56127 Pisa, Italy. [Pegna, D. Lopes; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA. [Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Renga, F.; Voena, C.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy. [Baracchini, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Renga, F.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. [Ebert, M.; Hartmann, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany. [Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.; Emery, S.; Esteve, L.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. [De Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Che, Ch. Ye; Zito, M.] CEA, Ctr Saclay, Irfu SPP, F-91191 Gif Sur Yvette, France. [Allen, M. T.; Aston, D.; Bard, D. J.; Bartoldus, R.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Fulsom, B. G.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Natl Accelerator Ctr, Stanford, CA 94309 USA. [Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA. [Bellis, M.; Burchat, P. R.; Edwards, A. J.; Miyashita, T. S.] Stanford Univ, Stanford, CA 94305 USA. [Ahmed, S.; Alam, M. S.; Ernst, J. A.; Pan, B.; Saeed, M. A.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA. [Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel. [Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA. [Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.] Univ Texas Austin, Austin, TX 78712 USA. [Drummond, B. W.; Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA. [Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy. [Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy. [Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy. [Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. [Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain. [Albert, J.; Banerjee, Sw.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada. [Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Pan, Y.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA. Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. [Sordini, V.] Univ Roma La Sapienza, I-00185 Rome, Italy. [Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy. RP Aubert, B (reprint author), Univ Savoie, LAPP, CNRS, IN2P3, F-74941 Annecy Le Vieux, France. RI Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Lusiani, Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; Stracka, Simone/M-3931-2015; Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Negrini, Matteo/C-8906-2014; Patrignani, Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; White, Ryan/E-2979-2015; Calabrese, Roberto/G-4405-2015; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; OI Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Stracka, Simone/0000-0003-0013-4714; Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Negrini, Matteo/0000-0003-0101-6963; Patrignani, Claudia/0000-0002-5882-1747; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; White, Ryan/0000-0003-3589-5900; Calabrese, Roberto/0000-0002-1354-5400; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Raven, Gerhard/0000-0002-2897-5323 FU DOE; NSF (USA); NSERC (Canada); CEA; CNRS-IN2P3 (France); BMBF; DFG (Germany); INFN (Italy); FOM (The Netherlands); NFR (Norway); MES (Russia); MICIIN (Spain); STFC (United Kingdom); Marie Curie EIF (European Union); A. P. Sloan Foundation; Binational Science Foundation FX We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MICIIN (Spain), STFC (United Kingdom). Individuals have received support from the Marie Curie EIF (European Union), the A. P. Sloan Foundation and the Binational Science Foundation. NR 13 TC 6 Z9 6 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD AUG 25 PY 2010 VL 82 IS 3 AR 031102 DI 10.1103/PhysRevD.82.031102 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 642OY UT WOS:000281226800001 ER PT J AU Suzuki, M AF Suzuki, Mahiko TI Approximate gauge symmetry of composite vector bosons SO PHYSICAL REVIEW D LA English DT Article ID CHIRAL TRANSITION; ELECTROMAGNETIC FIELD; ELEMENTARY-PARTICLES; MASSLESS PARTICLES; WEAK INTERACTIONS; HIGH-ENERGIES; HIGGS THEORY; MODEL; FERMIONS; SUPERCONDUCTIVITY AB It can be shown in a solvable field theory model that the couplings of the composite vector bosons made of a fermion pair approach the gauge couplings in the limit of strong binding. Although this phenomenon may appear accidental and special to the vector bosons made of a fermion pair, we extend it to the case of bosons being constituents and find that the same phenomenon occurs in a more intriguing way. The functional formalism not only facilitates computation but also provides us with a better insight into the generating mechanism of approximate gauge symmetry, in particular, how the strong binding and global current conservation conspire to generate such an approximate symmetry. Remarks are made on its possible relevance or irrelevance to electroweak and higher symmetries. C1 [Suzuki, Mahiko] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Suzuki, Mahiko] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Suzuki, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. FU Office of Science, Office of High Energy and Nuclear Physics, Division of High Energy Physics, of the U.S. Department of Energy [DE-AC02-05CH11231] FX The author acknowledges useful conversations with Korkut Bardakci. This work was supported by the Director, Office of Science, Office of High Energy and Nuclear Physics, Division of High Energy Physics, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. NR 37 TC 4 Z9 4 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD AUG 25 PY 2010 VL 82 IS 4 AR 045026 DI 10.1103/PhysRevD.82.045026 PG 15 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 642OZ UT WOS:000281226900006 ER PT J AU Danilov, V Nagaitsev, S AF Danilov, V. Nagaitsev, S. TI Nonlinear accelerator lattices with one and two analytic invariants SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB Integrable systems appeared in physics long ago at the onset of classical dynamics with examples being Kepler's and other famous problems. Unfortunately, the majority of nonlinear problems turned out to be nonintegrable. In accelerator terms, any 2D nonlinear nonintegrable mapping produces chaotic motion and a complex network of stable and unstable resonances. Nevertheless, in the proximity of an integrable system the full volume of such a chaotic network is small. Thus, the integrable nonlinear motion in accelerators has the potential to introduce a large betatron tune spread to suppress instabilities and to mitigate the effects of space charge and magnetic field errors. To create such an accelerator lattice, one has to find magnetic and electric field combinations leading to a stable integrable motion. This paper presents families of lattices with one invariant where bounded motion can be easily created in large volumes of the phase space. In addition, it presents three families of integrable nonlinear accelerator lattices, realizable with longitudinal-coordinate-dependent magnetic or electric fields with the stable nonlinear motion, which can be solved in terms of separable variables. C1 [Danilov, V.] Oak Ridge Natl Lab, Spallat Neutron Source Project, Oak Ridge, TN 37830 USA. [Nagaitsev, S.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Danilov, V (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source Project, Oak Ridge, TN 37830 USA. FU UT-Battelle, LLC; FRA, LLC [DE-AC05-00OR22725, DE-AC0207CH11359] FX This research is supported by UT-Battelle, LLC and by FRA, LLC for the U.S. Department of Energy under Contracts No. DE-AC05-00OR22725 and No. DE-AC0207CH11359, respectively. NR 13 TC 12 Z9 12 U1 0 U2 5 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 AUG 25 PY 2010 VL 13 IS 8 AR 084002 DI 10.1103/PhysRevSTAB.13.084002 PG 10 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 642QA UT WOS:000281229800003 ER PT J AU Tian, H Reece, CE AF Tian, Hui Reece, Charles E. TI Evaluation of the diffusion coefficient of fluorine during the electropolishing of niobium SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID PHOSPHORIC-ACID; COPPER; MECHANISM AB Future accelerators require unprecedented cavity performance, which is strongly influenced by interior surface nanosmoothness. Electropolishing (EP) is the technique of choice being developed for high-field superconducting radio frequency (SRF) cavities. Previous study has shown that the mechanism of Nb electropolishing proceeds by formation and dissolution of a compact salt film under fluorine diffusion-limited mass transport control. We pursue an improved understanding of the microscopic conditions required for optimum surface finishing. The viscosity of the standard electrolyte has been measured using a commercial viscometer, and the diffusion coefficient of fluorine was derived at a variety of temperatures from 0 to 50 degrees C using a Nb rotating disk electrode. In addition, data indicate that electrode kinetics becomes competitive with the mass transfer current limitation and increases dramatically with temperature. These findings are expected to guide the optimization of EP process parameters for achieving controlled, reproducible, and uniform nanosmooth surface finishing of SRF cavities. C1 [Tian, Hui; Reece, Charles E.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Tian, H (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. EM huit02@jlab.org OI Reece, Charles/0000-0003-1939-8699 FU U.S. Department of Energy [DE-AC05-06OR23177] FX This research was conducted at Thomas Jefferson National Accelerator Facility in collaboration with the College of William and Mary, Department of Applied Science, for the U.S. Department of Energy under Contract No. DE-AC05-06OR23177. This manuscript has been authored by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177. NR 28 TC 12 Z9 12 U1 0 U2 6 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 AUG 25 PY 2010 VL 13 IS 8 AR 083502 DI 10.1103/PhysRevSTAB.13.083502 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 642QA UT WOS:000281229800002 ER PT J AU Woodworth, JR Stygar, WA Bennett, LF Mazarakis, MG Anderson, HD Harden, MJ Blickem, JR Gruner, FR White, R AF Woodworth, J. R. Stygar, W. A. Bennett, L. F. Mazarakis, M. G. Anderson, H. D. Harden, M. J. Blickem, J. R. Gruner, F. R. White, R. TI New low inductance gas switches for linear transformer drivers SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID RADIOGRAPHY AB We have developed two new gas switches that are designed to be used with linear transformer drivers. The switches, which can be DC charged to 200 kV and triggered with less than a 2-ns 1-sigma jitter, have overall inductances ranging from 69 to 85 nH. When transferring 400 J of energy per shot, the switches have lifetimes in excess of 5000 shots. The two switches are insulated with 130-270 PSIA of air and are submerged in transformer oil during operation. These switches should allow development of linear transformer drivers that are more compact and have higher peak power. C1 [Woodworth, J. R.; Stygar, W. A.; Bennett, L. F.; Mazarakis, M. G.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Anderson, H. D.; Harden, M. J.] Natl Secur Technol Inc, Los Alamos, NM 87544 USA. [Blickem, J. R.] Ktech Corp Inc, Albuquerque, NM 87123 USA. [Gruner, F. R.] Kinetech LLC, The Dalles, OR 97058 USA. [White, R.] L3 Commun, Pulse Sci Div, San Diego, CA 92111 USA. RP Woodworth, JR (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU United States Department of Energy's National Nuclear Security Administration [DE-AC04-94-AL85000] FX We are thankful for numerous helpful discussions with Dr. M. E. Savage, Dr. J. E. Maenchen, Dr. D. H. McDaniel, Dr. J. J. Leckbee, Dr. P. A. Miller, Dr. S. F. Glover, Mr. W. E. Fowler, and Mr. I. Molina at Sandia National Laboratories; Mr.. A. Smith, Mr. D. L. Johnson, and Mr. E. Neau at L3 Communications Pulse Sciences; Dr. A. A. Kim at the High Current Electronics Institute in Tomsk; and Mr. J. Ennis and Mr. R. Hartsock at General Atomics Corporation. We are grateful to the RITS-6, HERMES-III, and LTDR Accelerator crews for help with many small mechanical components. 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 No. DE-AC04-94-AL85000. NR 15 TC 17 Z9 27 U1 0 U2 11 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 AUG 25 PY 2010 VL 13 IS 8 AR 080401 DI 10.1103/PhysRevSTAB.13.080401 PG 9 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 642QA UT WOS:000281229800001 ER PT J AU Giannone, RJ McDonald, HW Hurst, GB Shen, RF Wang, YS Liu, Y AF Giannone, Richard J. McDonald, Hayes W. Hurst, Gregory B. Shen, Rong-Fong Wang, Yisong Liu, Yie TI The Protein Network Surrounding the Human Telomere Repeat Binding Factors TRF1, TRF2, and POT1 SO PLOS ONE LA English DT Article ID DNA-DAMAGE RESPONSE; DOUBLE-STRAND BREAKS; MAMMALIAN TELOMERES; HOMOLOGOUS RECOMBINATION; DYSFUNCTIONAL TELOMERES; INDUCED PHOSPHORYLATION; IMPORTIN-ALPHA; HUMAN-CELLS; HUMAN RAP1; COMPLEX AB Telomere integrity (including telomere length and capping) is critical in overall genomic stability. Telomere repeat binding factors and their associated proteins play vital roles in telomere length regulation and end protection. In this study, we explore the protein network surrounding telomere repeat binding factors, TRF1, TRF2, and POT1 using dual-tag affinity purification in combination with multidimensional protein identification technology liquid chromatography - tandem mass spectrometry (MudPIT LC-MS/MS). After control subtraction and data filtering, we found that TRF2 and POT1 co-purified all six members of the telomere protein complex, while TRF1 identified five of six components at frequencies that lend evidence towards the currently accepted telomere architecture. Many of the known TRF1 or TRF2 interacting proteins were also identified. Moreover, putative associating partners identified for each of the three core components fell into functional categories such as DNA damage repair, ubiquitination, chromosome cohesion, chromatin modification/remodeling, DNA replication, cell cycle and transcription regulation, nucleotide metabolism, RNA processing, and nuclear transport. These putative protein-protein associations may participate in different biological processes at telomeres or, intriguingly, outside telomeres. C1 [Giannone, Richard J.; Wang, Yisong] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA. [Giannone, Richard J.; Hurst, Gregory B.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. [McDonald, Hayes W.] Vanderbilt Univ, Vanderbilt Ingram Canc Ctr, Nashville, TN USA. [Shen, Rong-Fong; Liu, Yie] NIA, Lab Mol Gerontol, NIH, Baltimore, MD 21224 USA. [Wang, Yisong] NCI, Med Oncol Branch, NIH, Bethesda, MD 20892 USA. RP Giannone, RJ (reprint author), Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA. EM yisong.wang@nih.gov; liuyie@mail.nih.gov OI Hurst, Gregory/0000-0002-7650-8009 FU National Institute on Aging, National Institutes of Health; Oak Ridge National Laboratory; Office of Biological and Environmental Research, U.S. Department of Energy [DE-AC05-00OR22725] FX This study was supported by the Intramural Research Program of the National Institute on Aging, National Institutes of Health. Y.W. and R.J.G. acknowledge the support of the Laboratory Directed Research and Development Program (LDRD), Oak Ridge National Laboratory, and the Office of Biological and Environmental Research, U.S. Department of Energy (DE-AC05-00OR22725). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 75 TC 21 Z9 23 U1 0 U2 5 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD AUG 25 PY 2010 VL 5 IS 8 AR e12407 DI 10.1371/journal.pone.0012407 PG 10 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 642RO UT WOS:000281234700028 PM 20811636 ER PT J AU Kartal, G Timur, S Urgen, M Erdemir, A AF Kartal, G. Timur, S. Urgen, M. Erdemir, A. TI Electrochemical bonding of titanium for improved mechanical properties SO SURFACE & COATINGS TECHNOLOGY LA English DT Article DE Titanium diboride; Molten salt; Electrochemical bonding; Surface treatment ID PURE TITANIUM; MOLTEN-SALTS; SURFACE; WEAR; FRICTION; PERFORMANCE; COATINGS; ALLOYS; STEEL; METAL AB In this study, we introduce a rapid bonding technique that can produce very thick titanium diboride (TiB(2)) layers on titanium substrates. We also discuss the effects of process duration on boride layer thickness, chemistry and, morphology. In our experiments, the bonding of commercial purity titanium (CP-Ti) substrates was carried out in an electrochemical cell in which we used a mixture of sodium tetraborate and sodium carbonate as the base ingredients of molten electrolyte at 950 degrees C and at current density of 300 mA/cm(2). The titanium test pieces were attached to the cathode holder of the electrochemical cell while a graphite crucible served as the anode. Both TiB and TiB(2) phases were detected by X-ray diffraction method even after 5 min of treatment. Scanning electron microscopy (SEM) images verified that the production of 4.5 mu m thick TiB(2) layers was feasible after bonding for an hour. The boride layers consisted of a homogeneous TiB(2) phase on the top and TiB whiskers toward the substrate. The micro-indentation studies indicated that the layer on top has hardness values as high as 40 GPa. The main advantages of this technique are its ability to produce very thick and hard TiB(2) quickly and to create no gaseous emissions or solid wastes during or after the treatment. (C) 2010 Elsevier B.V. All rights reserved. C1 [Kartal, G.; Timur, S.; Urgen, M.] Istanbul Tech Univ, Dept Met & Mat Engn, TR-34469 Istanbul, Turkey. [Erdemir, A.] Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. RP Kartal, G (reprint author), Istanbul Tech Univ, Dept Met & Mat Engn, TR-34469 Istanbul, Turkey. EM kartalgu@itu.edu.tr RI Timur, Servet/J-2893-2012; Urgen, Mustafa/D-5422-2014 OI Urgen, Mustafa/0000-0003-3549-0049 FU State Planning Organization of Turkey FX This work was supported by the State Planning Organization of Turkey through the "Advanced Technologies in Engineering". The authors would like to thank Prof.Dr. Gultekin Goller and Talat Alpak for their contributions on SEM-EDS analysis. We would like to thank Sevgin Turkeli for her help during thin film XRD analysis and Dr. Ozgur Celik for the micro hardness measurements. NR 35 TC 33 Z9 37 U1 1 U2 17 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD AUG 25 PY 2010 VL 204 IS 23 BP 3935 EP 3939 DI 10.1016/j.surfcoat.2010.05.021 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 627OG UT WOS:000280048600026 ER PT J AU Strachan, JP Pickett, MD Yang, JJ Aloni, S Kilcoyne, ALD Medeiros-Ribeiro, G Williams, RS AF Strachan, John Paul Pickett, Matthew D. Yang, J. Joshua Aloni, Shaul Kilcoyne, A. L. David Medeiros-Ribeiro, Gilberto Williams, R. Stanley TI Direct Identification of the Conducting Channels in a Functioning Memristive Device SO ADVANCED MATERIALS LA English DT Article ID X-RAY-ABSORPTION; RESISTIVE SWITCHING MEMORIES; RESISTANCE; TITANIUM; SPECTRA; SRTIO3; FILMS; TIO2 AB Titanium dioxide memristive devices have been non-destructively characterized using X-ray absorption spectromicroscopy and TEM. These techniques allow direct identification of the chemistry and structure of the conducting channel responsible for the bipolar resistance switching seen in these devices. Within the TiO2 matrix, we observe the formation of a Ti4O7 Magneli phase possessing metallic properties and ordered planes of oxygen vacancies. C1 [Strachan, John Paul; Pickett, Matthew D.; Yang, J. Joshua; Medeiros-Ribeiro, Gilberto; Williams, R. Stanley] Hewlett Packard Labs, Informat & Quantum Syst Lab, Palo Alto, CA 94304 USA. [Aloni, Shaul] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA. [Kilcoyne, A. L. David] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Strachan, JP (reprint author), Hewlett Packard Labs, Informat & Quantum Syst Lab, 1501 Page Mill Rd, Palo Alto, CA 94304 USA. EM john-paul.strachan@hp.com; stan.williams@hp.com RI Williams, R. Stanley/A-8281-2009; Yang, Jianhua/B-3358-2010; medeiros ribeiro, gilberto/E-1835-2012; Kilcoyne, David/I-1465-2013 OI Williams, R. Stanley/0000-0003-0213-4259; FU U.S. Government's Nano-Enabled Technology Initiative; Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231] FX We thank J. Borghetti, D. Stewart, and D. Strukov for helpful discussions and X. Li, D. A. A. Ohlberg, and U. Yoon for experimental assistance. Work at HP was partially supported by the U.S. Government's Nano-Enabled Technology Initiative. Work at the Molecular Foundry and the Advanced Light Source at Lawrence Berkeley National Laboratory 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 34 TC 195 Z9 195 U1 14 U2 145 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA POSTFACH 101161, 69451 WEINHEIM, GERMANY SN 0935-9648 EI 1521-4095 J9 ADV MATER JI Adv. Mater. PD AUG 24 PY 2010 VL 22 IS 32 BP 3573 EP + DI 10.1002/adma.201000186 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 648KI UT WOS:000281692100012 PM 20512814 ER PT J AU Wimalasena, DS Janowiak, BE Lovell, S Miyagi, M Sun, JJ Zhou, HY Hajduch, J Pooput, C Kirk, KL Battaile, KP Bann, JG AF Wimalasena, D. Shyamali Janowiak, Blythe E. Lovell, Scott Miyagi, Masaru Sun, Jianjun Zhou, Haiying Hajduch, Jan Pooput, Chaya Kirk, Kenneth L. Battaile, Kevin P. Bann, James G. TI Evidence That Histidine Protonation of Receptor-Bound Anthrax Protective Antigen Is a Trigger for Pore Formation SO BIOCHEMISTRY LA English DT Article ID TOXIN RECEPTOR; PROTEIN TRANSLOCATION; CRYSTAL-STRUCTURE; BINDING-ENERGY; RESIDUES; LETHAL; CHANNEL; INTERNALIZATION; IDENTIFICATION; MUTATIONS AB The protective antigen (PA) component or the anthrax toxin forms pores within the low pH environment of host endosomes through mechanisms that are poorly understood. It has been proposed that pore formation is dependent on histidine protonation. In previous work, we biosynthetically incorporated 2-fluorohistidine (2-FHis), an isosteric analogue of histidine with a significantly reduced pK(a) (similar to 1), into PA and showed that the pH-dependent conversion from the soluble prepore to a pore was unchanged. However, we also observed that 2-FHisPA was nonfunctional in the ability to mediate cytotoxicity of CHO-K1 cells by LF(N)-DTA and was defective in translocation through planar lipid bilayers. Here, we show that the defect in cytotoxicity is due to both a defect in translocation and, when bound to the host cellular receptor, an inability to undergo low pH-induced pore formation. Combining X-ray crystallography with hydrogen deuterium (H-D) exchange mass spectrometry, our studies lead to a model in which hydrogen bonds to the histidine ring are strengthened by receptor binding. The combination of both fluorination and receptor binding is sufficient to block low pH-induced pore formation. C1 [Wimalasena, D. Shyamali; Zhou, Haiying; Bann, James G.] Wichita State Univ, Dept Chem, Wichita, KS 67260 USA. [Janowiak, Blythe E.; Sun, Jianjun] Harvard Univ, Sch Med, Dept Microbiol & Mol Genet, Boston, MA 02115 USA. [Lovell, Scott] Univ Kansas, Del Shankel Struct Biol Ctr, Lawrence, KS 66047 USA. [Miyagi, Masaru] Case Western Reserve Univ, Dept Ophthalmol & Visual Sci, Dept Pharmacol, Case Ctr Prote & Bioinformat, Cleveland, OH 44106 USA. [Hajduch, Jan; Pooput, Chaya; Kirk, Kenneth L.] NIDDKD, Bioorgan Chem Lab, NIH, Bethesda, MD 20892 USA. [Battaile, Kevin P.] Argonne Natl Lab, Adv Photon Source, IMCA CAT, Argonne, IL 60439 USA. RP Bann, JG (reprint author), Wichita State Univ, Dept Chem, Wichita, KS 67260 USA. EM Jim.Bann@wichita.edu RI Zhou, Haiying/N-4092-2014; OI Battaile, Kevin/0000-0003-0833-3259 FU NIH [5P20 RR17708, R01 AI022021, IF32 AI077280]; Cleveland Foundation; NIDDK, NIH; University of Chicago; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [W-31-109-Eng-38] FX This work supported by NIH 5P20 RR17708 (J.G.B. and S.L.), NIH R01 AI022021 to R. John Collier (financial support to B.E.J. and J.S.), NIH IF32 AI077280 (B.E.J.), Cleveland Foundation (M.M.), and intramural research funds from the NIDDK, NIH (K.L.K.). Use of the IMCA-CAT beamline 17-BM at the Advanced Photon Source was supported by the companies of the Industrial Macromolecular Crystallography Association through a contract with the Center for Advanced Radiation Sources at the University of Chicago. Use of the Advanced Photon Source was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract W-31-109-Eng-38. NR 54 TC 16 Z9 16 U1 1 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD AUG 24 PY 2010 VL 49 IS 33 BP 6973 EP 6983 DI 10.1021/bi100647z PG 11 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 637YS UT WOS:000280855200001 PM 20672855 ER PT J AU Xiao, J Choi, DW Cosimbescu, L Koech, P Liu, J Lemmon, JP AF Xiao, Jie Choi, Daiwon Cosimbescu, Lelia Koech, Phillip Liu, Jun Lemmon, John P. TI Exfoliated MoS2 Nanocomposite as an Anode Material for Lithium Ion Batteries SO CHEMISTRY OF MATERIALS LA English DT Article ID MOLYBDENUM-DISULFIDE; STORAGE; ELECTRODES; NANOTUBES; LAYERS; FILMS C1 [Xiao, Jie; Choi, Daiwon; Cosimbescu, Lelia; Koech, Phillip; Liu, Jun; Lemmon, John P.] Pacific NW Natl Lab, Richland, WA 99354 USA. RP Lemmon, JP (reprint author), Pacific NW Natl Lab, K2-03,POB 999, Richland, WA 99354 USA. EM John.Lemmon@pnl.gov RI Choi, Daiwon/B-6593-2008 FU PNNL's internal DOE-LDRD FX The authors gratefully acknowledge financial support from PNNL's internal DOE-LDRD funding and extend their gratitude to Professor Michael Lerner at Oregon State University for insightful comments and discussion. NR 20 TC 342 Z9 348 U1 46 U2 413 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD AUG 24 PY 2010 VL 22 IS 16 BP 4522 EP 4524 DI 10.1021/cm101254j PG 3 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 637YR UT WOS:000280855100002 ER PT J AU Yang, RZ Leisch, J Strasser, P Toney, MF AF Yang, Ruizhi Leisch, Jennifer Strasser, Peter Toney, Michael F. TI Structure of Dealloyed PtCu3 Thin Films and Catalytic Activity for Oxygen Reduction SO CHEMISTRY OF MATERIALS LA English DT Article ID PLATINUM-MONOLAYER ELECTROCATALYSTS; NANOPARTICLE ELECTROCATALYSTS; ALLOY SURFACES; ELECTRONIC-STRUCTURE; BIMETALLIC SURFACES; CHEMICAL-PROPERTIES; TRANSITION-METALS; FUEL-CELLS; PT-CO; ADSORPTION AB The detailed structure and composition (surface and bulk) as well as catalytic activity for oxygen reduction of electrochemically dealloyed PtCu3 thin films have been investigated. Synchrotron-based anomalous X-ray diffraction (AXRD) reveals that a Pt enriched surface region (similar to 1.0 nm thick) and a Cu depleted interior (atomic ratio different from that of PtCu3) are formed in the dealloyed film, and we directly observe a compressive lattice strain in the Pt surface region. The dealloyed PtCu3 thin films show a similar to 2.4 fold increase in the specific oxygen reduction activity over pure Pt thin films as measured by a rotating disk electrode (RDE). Our results show that the enhanced catalytic activity of the dealloyed Pt-Cu film is primarily due to the compressive strain in the surface layer (ligand effect is very weak). We compare our results on thin films to related results on nanoparticles. These studies provide a better understanding of the structure - composition and structure - activity relationships in Pt-skeleton structures prepared by dealloying base-metal-rich alloys. C1 [Yang, Ruizhi; Toney, Michael F.] SLAC, Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA. [Yang, Ruizhi; Leisch, Jennifer; Toney, Michael F.] SLAC, Natl Accelerator Lab, Stanford Synchrotron Radiat Light Source, Menlo Pk, CA 94025 USA. [Strasser, Peter] Tech Univ Berlin, Elect Energy Catalysis & Mat Sci Lab, Dept Chem, Div Chem Engn, D-10623 Berlin, Germany. [Strasser, Peter] Univ Houston, Dept Chem & Biomol Engn, Houston, TX 77204 USA. RP Toney, MF (reprint author), SLAC, Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA. EM mftoney@slac.stanford.edu RI Yu, Chengfei/F-9210-2011; Strasser, Peter/A-1868-2012; Thandavarayan, Maiyalagan/C-5716-2011 OI Thandavarayan, Maiyalagan/0000-0003-3528-3824 FU Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-ACO2-76SF00515, LAB04-20] FX This work is supported by the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under Contract DE-ACO2-76SF00515 and under the auspices of the grant LAB04-20. Portions of this research were carried out at the Stanford Synchrotron Radiation Light Source, a national user facility operated by Stanford University on behalf of the U.S Department of Energy, Office of Basic Energy Sciences. Thin film preparation and lab-source characterization were carried out at Stanford Nanofabrication Facility and Stanford Nanocharacterization Laboratory, respectively. We thank Seungsae Hong at Department of Applied Physics, Stanford University, for the assistance in SEM measurement. NR 64 TC 121 Z9 123 U1 9 U2 86 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD AUG 24 PY 2010 VL 22 IS 16 BP 4712 EP 4720 DI 10.1021/cm101090p PG 9 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 637YR UT WOS:000280855100025 ER PT J AU Simon, MA Woods, WA Serebrenik, YV Simon, SM van Griethuijsen, LI Socha, JJ Lee, WK Trimmer, BA AF Simon, Michael A. Woods, William A., Jr. Serebrenik, Yevgeniy V. Simon, Sharotka M. van Griethuijsen, Linnea I. Socha, John J. Lee, Wah-Keat Trimmer, Barry A. TI Visceral-Locomotory Pistoning in Crawling Caterpillars SO CURRENT BIOLOGY LA English DT Article ID MANDUCA-SEXTA; LEGGED LOCOMOTION; HUMAN WALKING; KINEMATICS AB Animals with an open coelom do not fully constrain internal tissues [1-3], and changes in tissue or organ position during body movements cannot be readily discerned from outside of the body. This complicates modeling of soft-bodied locomotion, because it obscures potentially important changes in the center of mass as a result of internal tissue movements [4, 5]. We used phase-contrast synchrotron X-ray imaging [6-10] and transmission light microscopy to directly visualize internal soft-tissue movements in freely crawling caterpillars. Here we report a novel visceral-locomotory piston in crawling Manduca sexta larvae, in which the gut slides forward in advance of surrounding tissues. The initiation of gut sliding is synchronous with the start of the terminal prolegs' swing phase, suggesting that the animal's center of mass advances forward during the midabdominal prolegs' stance phase and is therefore decoupled from visible translations of the body. Based on synchrotron X-ray data and transmission light microscopy results, we present evidence for a two-body mechanical system with a nonlinear elastic gut that changes size and translates between the anterior and posterior of the animal. The proposed two-body system-the container and the contained-is unlike any form of legged locomotion previously reported and represents a new feature in our emerging understanding of crawling. C1 [Simon, Michael A.; Woods, William A., Jr.; Serebrenik, Yevgeniy V.; Simon, Sharotka M.; van Griethuijsen, Linnea I.; Trimmer, Barry A.] Tufts Univ, Dept Biol, Medford, MA 02155 USA. [Socha, John J.] Virginia Tech, Dept Engn Sci & Mech, Blacksburg, VA 24061 USA. [Lee, Wah-Keat] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Simon, MA (reprint author), Tufts Univ, Dept Biol, 163 Packard Ave, Medford, MA 02155 USA. EM michael.simon@tufts.edu FU US Department of Energy, Office of Science, and Office of Basic Energy Sciences [DE-AC02-06CH11357] FX Advanced Photon Source at Argonne National Laboratory was supported by the US Department of Energy, Office of Science, and Office of Basic Energy Sciences under contract DE-AC02-06CH11357. NR 40 TC 17 Z9 18 U1 4 U2 13 PU CELL PRESS PI CAMBRIDGE PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA SN 0960-9822 J9 CURR BIOL JI Curr. Biol. PD AUG 24 PY 2010 VL 20 IS 16 BP 1458 EP 1463 DI 10.1016/j.cub.2010.06.059 PG 6 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 643VW UT WOS:000281328800025 PM 20655223 ER PT J AU Di Vittorio, AV Anderson, RS White, JD Miller, NL Running, SW AF Di Vittorio, Alan V. Anderson, Ryan S. White, Joseph D. Miller, Norman L. Running, Steven W. TI Development and optimization of an Agro-BGC ecosystem model for C-4 perennial grasses SO ECOLOGICAL MODELLING LA English DT Article DE Agro-BGC; Bioenergy; Biome-BGC; Carbon; Ecosystem model; Switchgrass ID PRIMARY PRODUCTIVITY NPP; COMPARING GLOBAL-MODELS; NORTHERN GREAT-PLAINS; BIOMASS YIELD; UNITED-STATES; INTERCOMPARISON PROJECT; TERRESTRIAL BIOSPHERE; COMPLEX TERRAIN; USE EFFICIENCY; SOUTHERN IOWA AB Extrapolating simulations of bioenergy crop agro-ecosystems beyond data-rich sites requires biophysically accurate ecosystem models and careful estimation of model parameters not available in the literature. To increase biophysical accuracy we added C-4 perennial grass functionality and agricultural practices to the Biome-BGC (BioGeochemical Cycles) ecosystem model. This new model, Agro-BGC, includes enzyme-driven C-4 photosynthesis, individual live and dead leaf, stem, and root carbon and nitrogen pools, separate senescence and litter fall processes, fruit growth, optional annual seeding, flood irrigation, a growing degree day phenology with a killing frost option, and a disturbance handler that simulates nitrogen fertilization, harvest, fire, and incremental irrigation. To obtain spatially generalizable vegetation parameters we used a numerical method to optimize five unavailable parameters for Panicum virgatum (switchgrass) using biomass yield data from three sites: Mead, Nebraska, Rockspring, Pennsylvania, and Mandan, North Dakota. We then verified simulated switchgrass yields at three independent sites in Illinois (IL). Agro-BGC is more accurate than Biome-BGC in representing the physiology and dynamics of C-4 grass and management practices associated with agro-ecosystems. The simulated two-year average mature yields with single-site Rockspring optimization have Root Mean Square Errors (RMSE) of 70, 152, and 162 and biases of 43, -87, 156 g carbon m(-2) for Shabbona, Urbana, and Simpson IL respectively. The simulated annual yields in June, August, October, December, and February have RMSEs of 114, 390, and 185 and biases of -19, -258, and 147 g carbon m(-2) for Shabbona, Urbana, and Simpson IL respectively. These RMSE and bias values are all within the largest 90% confidence interval around respective IL site measurements. Twenty-four of twenty-six simulated annual yields with Rockspring optimization are within 95% confidence intervals of Illinois site measurements during the mature fourth and fifth years of growth. Ten of eleven simulated two-year average mature yields with Rockspring optimization are within 65% confidence intervals of Illinois site measurements and the eleventh is within the 95% confidence interval. Rockspring optimized Agro-BGC achieves accuracies comparable to those of two previously published models: Agricultural Land Management Alternatives with Numerical Assessment Criteria (ALMANAC) and Integrated Farm System Model (IFSM). Agro-BGC suffers from static vegetation parameters that can change seasonally and as plants age. Using mature plant data for optimization mitigates this deficiency. Our results suggest that a multi-site optimization scheme using mature plant data from more sites would be adequate for generating spatially generalizable vegetation parameters for simulating mature bioenergy crop agro-ecosystems with Agro-BGC. (C) 2010 Elsevier B.V. All rights reserved. C1 [Di Vittorio, Alan V.] Univ Calif Berkeley, Energy Biosci Inst, Berkeley, CA 94720 USA. [Di Vittorio, Alan V.; Miller, Norman L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. [Anderson, Ryan S.; Running, Steven W.] Univ Montana, Coll Forestry & Conservat, Numer Terradynam Simulat Grp, Missoula, MT 59812 USA. [White, Joseph D.] Baylor Univ, Inst Ecol Earth & Environm Sci, Waco, TX 76798 USA. [Miller, Norman L.] Univ Calif Berkeley, Dept Geog, Berkeley, CA 94720 USA. RP Di Vittorio, AV (reprint author), Univ Calif Berkeley, Energy Biosci Inst, 1 Cyclotron Rd,Mail Stop 90-1116, Berkeley, CA 94720 USA. EM adivi@berkeley.edu; ryan.anderson@ntsg.umt.edu; Joseph_D_White@baylor.edu; nlmiller@berkeley.edu; swr@ntsg.umt.edu RI Di Vittorio, Alan/M-5325-2013 OI Di Vittorio, Alan/0000-0002-8139-4640 FU Energy Biosciences Institute FX The Energy Biosciences Institute funded this research. The authors are grateful to Emily Heaton and Frank Dohleman for providing switchgrass data from the Illinois sites. We also thank Faith Ann Heinsch and Matt Jolly for sharing their work on a precursor to Agro-BGC. NR 77 TC 22 Z9 22 U1 3 U2 26 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3800 J9 ECOL MODEL JI Ecol. Model. PD AUG 24 PY 2010 VL 221 IS 17 BP 2038 EP 2053 DI 10.1016/j.ecolmodel.2010.05.013 PG 16 WC Ecology SC Environmental Sciences & Ecology GA 633NZ UT WOS:000280511100005 ER PT J AU Olsen, BD Gu, X Hexemer, A Gann, E Segalman, RA AF Olsen, Bradley D. Gu, Xun Hexemer, Alexander Gann, Eliot Segalman, Rachel A. TI Liquid Crystalline Orientation of Rod Blocks within Lamellar Nanostructures from Rod Coil Diblock Copolymers SO MACROMOLECULES LA English DT Article ID DEH-PPV; PHASE; ORGANIZATION; MOLECULES; BEHAVIOR; HOMOPOLYMER; POLYMERS; BLENDS C1 [Olsen, Bradley D.; Gu, Xun; Segalman, Rachel A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem Engn, Berkeley, CA 94720 USA. [Olsen, Bradley D.; Segalman, Rachel A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Hexemer, Alexander; Gann, Eliot] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Segalman, RA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem Engn, Berkeley, CA 94720 USA. EM segalman@berkeley.edu RI Gann, Eliot/A-5246-2014; OI Segalman, Rachel/0000-0002-4292-5103; Olsen, Bradley/0000-0002-7272-7140 FU NSF; Hertz Fellowship FX We gratefully acknowledge support from an NSF-CAREER Award, SAXS and WAXS experiments were performed at the Advanced Light Source at LBNL. B.D.O. gratefully acknowledges support from a Hertz Fellowship. We thank Dr. Yuefei Tao and Bryan McCulloch for helpful discussions. NR 35 TC 9 Z9 9 U1 0 U2 32 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD AUG 24 PY 2010 VL 43 IS 16 BP 6531 EP 6534 DI 10.1021/ma101056r PG 4 WC Polymer Science SC Polymer Science GA 637YQ UT WOS:000280855000002 ER PT J AU Nikiforov, MP Gam, S Jesse, S Composto, RJ Kalinin, SV AF Nikiforov, M. P. Gam, S. Jesse, S. Composto, R. J. Kalinin, S. V. TI Morphology Mapping of Phase-Separated Polymer Films Using Nanothermal Analysis SO MACROMOLECULES LA English DT Article ID DYNAMIC-MECHANICAL ANALYSIS; EXPANSION MICROSCOPY; GLASS-TRANSITION; BLENDS; TEMPERATURE; CONFINEMENT; RELAXATION; TACTICITY; KINETICS; BEHAVIOR AB Polymers films arc attractive, in part, because their physical properties can be tuned by blending polymer with complementary characteristics. However, blending is typically challenging because most polymers will undergo phase separation, resulting in unpredictable behavior. Here, we introduce band excitation nanothermal analysis (BE-NanoTA) as a nondestructive A FM-based technique for mapping the near surface, thermal properties of polymeric coatings. BE-NanoTA was used to investigate phase separation and domain growth in poly(styrene-ran-acrylonitrile):poly(methyl methacrylate) SAN: PM MA films. The size and shape of PM MA-rich domains are consistent with prior measurements on the same system using a destructive method, namely UV-ozone etching of PM MA followed by topography mapping using standard AFM. Moreover, new insights into the mechanism of phase separation were uncovered including the observation of SAN- and PMMA-rich channels near the surface at early times as well as small SAN-rich domains trapped within large PM MA domains during intermediate times. Because it is nondestructive, BE-NanoTA can be used to explore in situ phase evolution in soft matter systems (e.g., polymer nanocomposites) which do not lend themselves to the UV-ozone etching method. C1 [Nikiforov, M. P.; Jesse, S.; Kalinin, S. V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Gam, S.; Composto, R. J.] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA. RP Nikiforov, MP (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. RI Nikiforov, Maxim/C-1965-2012; Kalinin, Sergei/I-9096-2012; Jesse, Stephen/D-3975-2016 OI Kalinin, Sergei/0000-0001-5354-6152; Jesse, Stephen/0000-0002-1168-8483 FU Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy; Nano/Bio Interface Center at the University of Pennsylvania; U.S. National Science Foundation (NSF) [DMR08-32802]; World Materials Network (NSF) [DMR09-08449]; NSF [DMR09-07493] FX We thank L. T. Germinario for fruitful discussions of local thermal analysis and A. P. Baddorf for proofreading and restructuring the manuscript. A portion of this research at the Oak Ridge National Laboratory's Center for Nanophase Materials Sciences was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. The BE-NanoTA technique is available as a part of user program at the CNMS. The work by R.J.C. and S.G. was supported by the Nano/Bio Interface Center at the University of Pennsylvania and the U.S. National Science Foundation (NSF) under Grant DMR08-32802 as well as the World Materials Network (NSF) DMR09-08449. Partial support was provided by the NSF Polymer program under Grant DMR09-07493. NR 37 TC 18 Z9 18 U1 0 U2 25 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD AUG 24 PY 2010 VL 43 IS 16 BP 6724 EP 6730 DI 10.1021/ma1011254 PG 7 WC Polymer Science SC Polymer Science GA 637YQ UT WOS:000280855000027 ER PT J AU Driva, P Pickel, DL Mays, JW Baskaran, D AF Driva, Paraskevi Pickel, Deanna L. Mays, Jimmy W. Baskaran, Durairaj TI A New Approach to the Living Anionic Polymerization of 4-Cyanostyrene SO MACROMOLECULES LA English DT Article ID SIZE-EXCLUSION CHROMATOGRAPHY; ELECTRON-WITHDRAWING GROUPS; BLOCK COPOLYMERIZATION; FUNCTIONAL-GROUPS; STYRENE DERIVATIVES; MONOMERS; HOMOPOLYMERIZATION; 4-VINYLPYRIDINE; TEMPERATURE; CHEMISTRY C1 [Mays, Jimmy W.; Baskaran, Durairaj] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. [Driva, Paraskevi; Mays, Jimmy W.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. [Pickel, Deanna L.; Mays, Jimmy W.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. RP Baskaran, D (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. EM baskaran@utk.edu RI Pickel, Deanna/E-4778-2010; Durairaj, Baskaran/C-3692-2009 OI Durairaj, Baskaran/0000-0002-6886-5604 FU Division of Materials Sciences and Engineering. Office of Basic Energy Sciences, U.S. Department of Energy(ORNL) [DE-AC05-00OR22725]; Division of Scientific User Facilities, U.S. Department of Energy; Oak Ridge National Laboratory (ORNL) FX The authors are grateful to Prof. N. Hadjichristidis for his invaluable discussions and contribution in the preparation of the manuscript. The authors also thank Dr. M. Dadmun's group and especially Dias Linton as well as Drs J. M. Messman and B. S. Lokitz for their help in this project. Research was supported by the Division of Materials Sciences and Engineering. Office of Basic Energy Sciences, U.S. Department of Energy, under Contract DE-AC05-00OR22725 with Oak Ridge National Laboratory (ORNL), managed and operated by UT-Battelle, LLC. A portion of this research was conducted at the Center for Nanophase Materials Sciences, which is sponsored at ORNL by the Division of Scientific User Facilities, U.S. Department of Energy. NR 20 TC 1 Z9 2 U1 4 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD AUG 24 PY 2010 VL 43 IS 16 BP 6915 EP 6918 DI 10.1021/ma100910w PG 4 WC Polymer Science SC Polymer Science GA 637YQ UT WOS:000280855000048 ER PT J AU Kamiya, Y Kawashima, N Batista, CD AF Kamiya, Y. Kawashima, N. Batista, C. D. TI Crossover behavior from decoupled criticality SO PHYSICAL REVIEW B LA English DT Article ID MONTE-CARLO; ANTIFERROMAGNET; HEISENBERG; MODELS; POINT AB We study the thermodynamic phase transition of a spin Hamiltonian comprising two three-dimensional (3D) magnetic sublattices. Each sublattice contains XY spins coupled by the usual bilinear exchange while spins in different sublattices only interact via biquadratic exchange. This Hamiltonian is an effective model for XY magnets on certain frustrated lattices such as body centered tetragonal. By performing a cluster Monte Carlo simulation, we investigate the crossover from the 3D-XY fixed point (decoupled sublattices) and find a systematic flow toward a first-order transition without a separatrix or a new fixed point. This strongly suggests that the correct asymptotic behavior is a first-order transition. C1 [Kamiya, Y.; Kawashima, N.] Univ Tokyo, Inst Solid State Phys, Chiba 2278581, Japan. [Batista, C. D.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Kamiya, Y (reprint author), Univ Tokyo, Inst Solid State Phys, Chiba 2278581, Japan. RI Kamiya, Yoshitomo/B-6307-2012; Batista, Cristian/J-8008-2016 OI Kamiya, Yoshitomo/0000-0002-0758-0234; FU MEXT, Japan [22340111, 19052004] FX We would like to thank M. Oshikawa and Y. Tomita for illuminating suggestions. The computation in the present work is executed on computers at the Supercomputer Center, Institute for Solid State Physics, University of Tokyo, and T2K Open Supercomputer, University of Tokyo. The project is supported by the MEXT Global COE Program "the Physical Science Frontier," the MEXT Grand-in-Aid for Scientific Research (B) (Grant No. 22340111), the MEXT Grand-in-Aid for Scientific Research on Priority Areas " Novel States of Matter Induced by Frustration" (Grant No. 19052004), and by the Next Generation Supercomputing Project, Nano-science Program, MEXT, Japan. NR 25 TC 5 Z9 5 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 24 PY 2010 VL 82 IS 5 AR 054426 DI 10.1103/PhysRevB.82.054426 PG 4 WC Physics, Condensed Matter SC Physics GA 641WJ UT WOS:000281161600003 ER PT J AU Gauthier, D Guizar-Sicairos, M Ge, X Boutu, W Carre, B Fienup, JR Merdji, H AF Gauthier, D. Guizar-Sicairos, M. Ge, X. Boutu, W. Carre, B. Fienup, J. R. Merdji, H. TI Single-shot Femtosecond X-Ray Holography Using Extended References SO PHYSICAL REVIEW LETTERS LA English DT Article ID HIGH-ORDER HARMONICS; MICROSCOPY; ALGORITHMS; RESOLUTION; LASER; NM AB In the context of x-ray lensless imaging, we present a recent approach for Fourier transform holography based on the use of extended references. Major advances shown here rely on a high signal efficiency and on the direct image reconstruction of the object performed by a simple linear derivative. Moreover, the extended holographic reference is easy to manufacture and can be applied to a variety of imaging experiments. Here we demonstrate single-shot imaging with a table-top, laser-based coherent soft x-ray source. A spatial resolution of 110 nm was obtained with an integration time of 20 fs. C1 [Gauthier, D.; Ge, X.; Boutu, W.; Carre, B.; Merdji, H.] CEA Saclay, IRAMIS, Serv Photons Atomes & Mol, F-91191 Gif Sur Yvette, France. [Guizar-Sicairos, M.; Fienup, J. R.] Univ Rochester, Inst Opt, Rochester, NY 14627 USA. [Merdji, H.] Stanford Univ, Stanford Linear Accelerator Ctr, PULSE Inst Ultrafast Energy Sci, Menlo Pk, CA 94025 USA. RP Gauthier, D (reprint author), CEA Saclay, IRAMIS, Serv Photons Atomes & Mol, F-91191 Gif Sur Yvette, France. EM hamed.merdji@cea.fr RI Guizar-Sicairos, Manuel/I-4899-2013; Fienup, James/B-2715-2016 OI Fienup, James/0000-0001-5147-9435 FU EU-LASERLAB [RII3-CT-2003-506350]; French ministry of research; Triangle de la Physique; U.S. Department of Energy through the Stanford PULSE Center FX We acknowledge financial support from the EU-LASERLAB (RII3-CT-2003-506350) programs, from French ministry of research though the 2009 ANR grants "I-NanoX'' and "Femto-X-Mag'', from the "Triangle de la Physique'' through the COX grant and the C'NANO research program though the X-NANO grant and also support from the U.S. Department of Energy through the Stanford PULSE Center. We acknowledge Marc Billon, Cedric Baumier, Mike Bogan, Phil Bucksbaum, Franck Fortuna, Julien Gautier, D. Garzella, O. Gobert, J.-F. Hergott, Xiaochi Liu, Jan Luning, Stefano Marchesini, Alessandra Ravasio, and Philippe Zeitoun for grateful discussion and support. NR 28 TC 40 Z9 40 U1 3 U2 15 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 24 PY 2010 VL 105 IS 9 AR 093901 DI 10.1103/PhysRevLett.105.093901 PG 4 WC Physics, Multidisciplinary SC Physics GA 641XC UT WOS:000281164200008 PM 20868161 ER PT J AU Wang, L Yang, WG Ding, Y Ren, Y Xiao, SG Liu, BB Sinogeikin, SV Meng, Y Gosztola, DJ Shen, GY Hemley, RJ Mao, WL Mao, HK AF Wang, Lin Yang, Wenge Ding, Yang Ren, Yang Xiao, Siguo Liu, Bingbing Sinogeikin, Stanislav V. Meng, Yue Gosztola, David J. Shen, Guoyin Hemley, Russell J. Mao, Wendy L. Mao, Ho-kwang TI Size-Dependent Amorphization of Nanoscale Y2O3 at High Pressure SO PHYSICAL REVIEW LETTERS LA English DT Article ID PHASE-TRANSITION; NANOCRYSTALLINE AB Y2O3 with particle sizes ranging from 5 nm to 1 mu m were studied at high pressure using x-ray diffraction and Raman spectroscopy techniques. Nanometer-sized Y2O3 particles are shown to be more stable than their bulk counterparts, and a grain size-dependent crystalline-amorphous transition was discovered in these materials. High-energy atomic pair distribution function measurements reveal that the amorphization is associated with the breakdown of the long-rang order of the YO6 octahedra, while the nearest-neighbor edge-shared octahedral linkages are preserved. C1 [Wang, Lin; Yang, Wenge; Ding, Yang; Mao, Ho-kwang] Carnegie Inst Washington, HPSynC, Argonne, IL 60439 USA. [Wang, Lin; Liu, Bingbing] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China. [Yang, Wenge; Sinogeikin, Stanislav V.; Meng, Yue; Shen, Guoyin; Mao, Ho-kwang] Carnegie Inst Washington, HPCAT, Argonne, IL 60439 USA. [Ren, Yang] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. [Xiao, Siguo] Xiangtan Univ, Inst Nanophys & Rare Earth Luminescence, Xiangtan 411105, Peoples R China. [Gosztola, David J.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [Hemley, Russell J.; Mao, Ho-kwang] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA. [Mao, Wendy L.] Stanford Univ, Stanford, CA 94305 USA. [Mao, Wendy L.] SLAC Natl Accelerator Lab, Photon Sci & Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA. RP Wang, L (reprint author), Carnegie Inst Washington, HPSynC, 9700 S Cass Ave, Argonne, IL 60439 USA. EM wanglin@aps.anl.gov RI Shen, Guoyin/D-6527-2011; Gosztola, David/D-9320-2011; Mao, Wendy/D-1885-2009; Yang, Wenge/H-2740-2012; WANG, LIN/G-7884-2012; Ding, Yang/K-1995-2014 OI Gosztola, David/0000-0003-2674-1379; Ding, Yang/0000-0002-8845-4618 FU NSF [MRI-0821584, EAR-0810255]; International Balzan Foundation; U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES) [DE-SC0001057]; CIW; CDAC; UNLV; DOE-NNSA; DOE-BES; NSF; NSFC [10979001]; National Basic Research Program of China [2005CB724400] FX We thank R. E. Cook, R. Koritala, and O. Shebanova for experimental help, and anonymous reviewers for comments. The research was supported by NSF (MRI-0821584 and EAR-0810255), and the International Balzan Foundation. HPSynC is supported as part of EFree, an Energy Frontier Research Center funded by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES) under Grant Number DE-SC0001057. HPCAT is supported by CIW, CDAC, UNLV and LLNL through funding from DOE-NNSA, DOE-BES and NSF. The work was conducted at the APS, the Electron Microscopy Center for Materials Research, and the Center for Nanoscale Materials at ANL (Contract No. DE-AC02-06CH11357). This work was also partially supported by the NSFC (10979001), the National Basic Research Program of China (2005CB724400). NR 23 TC 47 Z9 47 U1 1 U2 40 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 24 PY 2010 VL 105 IS 9 AR 095701 DI 10.1103/PhysRevLett.105.095701 PG 4 WC Physics, Multidisciplinary SC Physics GA 641XC UT WOS:000281164200012 PM 20868175 ER PT J AU Weinberger, CR AF Weinberger, Christopher R. TI Comment on "Lattice Resistance to Dislocation Motion at the Nanoscale'' SO PHYSICAL REVIEW LETTERS LA English DT Letter C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Weinberger, CR (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM crweinb@sandia.gov RI Weinberger, Christopher/E-2602-2011 OI Weinberger, Christopher/0000-0001-9550-6992 NR 3 TC 5 Z9 5 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 24 PY 2010 VL 105 IS 9 AR 099601 DI 10.1103/PhysRevLett.105.099601 PG 1 WC Physics, Multidisciplinary SC Physics GA 641XC UT WOS:000281164200015 PM 20868200 ER PT J AU Meunier, V Pan, MH Moreau, F Park, KT Plummer, EW AF Meunier, Vincent Pan, M. H. Moreau, F. Park, K. T. Plummer, E. W. TI Evidence of Coulomb blockade behavior in a quasi-zero-dimensional quantum well on TiO2 surface SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE capacitor; Coulomb blockage; quantum confinement; titanium dioxide; scanning tunneling microscopy ID CONFINEMENT; TIO2(110) AB Line defects on the surface of rutile TiO2(110) form in pairs separated by 1.2 nm creating a quantum well. The well is effectively closed by the presence of two charged structures at both ends separated by a distance in the 10-20 nm range. As expected for quantum confinement a long period oscillatory feature of the local density of states is observed and attributed to the formation of discrete quantum states inside the system. It is at first glance surprising that the lowest energy quantum state of the well can be observed at room temperature. The properties of the quantum state cannot be explained in an independent-electron, band-like theory. Instead, electron-electron correlation must be included to give a satisfactory picture of the spatial distribution of the charge density. Theory predicts charging energies of 1.30 eV and 1.14 eV for quantum well lengths of 14 nm and 16 nm, respectively, in good agreement with a classical calculation and the size dependence of the capacitance. This observation opens up the possibility of experimentally imaging the transition from a Coulomb blockade localized in a zero-dimensional system to an independent-particle or band-like behavior in an extended one-dimensional system. C1 [Plummer, E. W.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. [Meunier, Vincent; Pan, M. H.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. [Meunier, Vincent; Moreau, F.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN USA. [Moreau, F.] Fac Univ Notre Dame Paix, Dept Phys, Namur, Belgium. [Park, K. T.] Baylor Univ, Dept Phys, Waco, TX 76798 USA. RP Plummer, EW (reprint author), Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. EM wplummer@phys.lsu.edu RI Meunier, Vincent/F-9391-2010 OI Meunier, Vincent/0000-0002-7013-179X FU Division of Scientific User Facilities, Department of Energy; Division of Materials Science, Department of Energy [DEAC05-00OR22725]; UT-Battelle, at Oak Ridge National Laboratory; DOE [DESC0002136] FX This research was conducted at the Center for Nano-phase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Division of Scientific User Facilities, Department of Energy. The present work was also sponsored by the Division of Materials Science, Department of Energy under Contract DEAC05-00OR22725 with UT-Battelle, at Oak Ridge National Laboratory. E. W. P. was supported by DOE #DESC0002136. The computations were performed using the resources of the National Center for Computational Sciences at Oak Ridge National Laboratory. NR 19 TC 1 Z9 1 U1 1 U2 9 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 AUG 24 PY 2010 VL 107 IS 34 BP 14968 EP 14972 DI 10.1073/pnas.1009310107 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 643PT UT WOS:000281311500008 PM 20679246 ER PT J AU Mak, KF Sfeir, MY Misewich, JA Heinz, TF AF Mak, Kin Fai Sfeir, Matthew Y. Misewich, James A. Heinz, Tony F. TI The evolution of electronic structure in few-layer graphene revealed by optical spectroscopy SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE electronic structures; infrared spectroscopy; zone-folding method ID BILAYER GRAPHENE; GRAPHITE AB The massless Dirac spectrum of electrons in single-layer graphene has been thoroughly studied both theoretically and experimentally. Although a subject of considerable theoretical interest, experimental investigations of the richer electronic structure of few-layer graphene (FLG) have been limited. Here we examine FLG graphene crystals with Bernal stacking of layer thicknesses N 1,2,3,...8 prepared using the mechanical exfoliation technique. For each layer thickness N, infrared conductivity measurements over the spectral range of 0.2-1.0 eV have been performed and reveal a distinctive band structure, with different conductivity peaks present below 0.5 eV and a relatively flat spectrum at higher photon energies. The principal transitions exhibit a systematic energy-scaling behavior with N. These observations are explained within a unified zone-folding scheme that generates the electronic states for all FLG materials from that of the bulk 3D graphite crystal through imposition of appropriate boundary conditions. Using the Kubo formula, we find that the complete infrared conductivity spectra for the different FLG crystals can be reproduced reasonably well within the framework a tight-binding model. C1 [Mak, Kin Fai; Heinz, Tony F.] Columbia Univ, Dept Phys, New York, NY 10027 USA. [Sfeir, Matthew Y.; Misewich, James A.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Mak, Kin Fai; Heinz, Tony F.] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA. RP Heinz, TF (reprint author), Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA. EM tony.heinz@columbia.edu RI Heinz, Tony/K-7797-2015; OI Heinz, Tony/0000-0003-1365-9464; Sfeir, Matthew/0000-0001-5619-5722 FU Nanoscale Science and Engineering Initiative of the National Science Foundation [CHE-06-41523]; New York State Office of Science, Technology, and Academic Research (NYSTAR); Office of Naval Research under the Multidisciplinary University Research Initiative (MURI); US Department of Energy, Brookhaven [DE-AC02-98CH10886]; NSLS at Brookhaven; Center for Synchrotron Biosciences, Case Western Reserve University [P41-EB-01979]; National Institute for Biomedical Imaging and Bioengineering FX We thank Drs. Mikito Koshino, Mark S. Hybertsen, and Sami Rosenblatt for valuable discussions. The authors at Columbia University acknowledge support from the Nanoscale Science and Engineering Initiative of the National Science Foundation under Grant CHE-06-41523, from the New York State Office of Science, Technology, and Academic Research (NYSTAR), and from the Office of Naval Research under the Multidisciplinary University Research Initiative (MURI) program; the authors at Brookhaven were supported under contract DE-AC02-98CH10886 with the US Department of Energy. The synchrotron studies were supported by the NSLS at Brookhaven and the Center for Synchrotron Biosciences, Case Western Reserve University, under P41-EB-01979 with the National Institute for Biomedical Imaging and Bioengineering. NR 36 TC 90 Z9 90 U1 1 U2 61 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 AUG 24 PY 2010 VL 107 IS 34 BP 14999 EP 15004 DI 10.1073/pnas.1004595107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 643PT UT WOS:000281311500014 PM 20696939 ER PT J AU Dayal, S Reese, MO Ferguson, AJ Ginley, DS Rumbles, G Kopidakis, N AF Dayal, Smita Reese, Matthew O. Ferguson, Andrew J. Ginley, David S. Rumbles, Garry Kopidakis, Nikos TI The Effect of Nanoparticle Shape on the Photocarrier Dynamics and Photovoltaic Device Performance of Poly(3-hexylthiophene):CdSe Nanoparticle Bulk Heterojunction Solar Cells SO ADVANCED FUNCTIONAL MATERIALS LA English DT Article ID NANOCRYSTAL-POLYMER COMPOSITES; CHARGE SEPARATION EFFICIENCY; CDSE NANOPARTICLES; PHOTOCONDUCTIVITY; POLYTHIOPHENE; MORPHOLOGY; TIO2; NANORODS; GROWTH; FILMS AB The charge separation and transport dynamics in CdSe nanoparticle:poly(3-hexylthiophene) (P3HT) blends are reported as a function of the shape of the CdSe-nanoparticle electron acceptor (dot, rod, and tetrapod). For optimization of organic photovoltaic device performance it is crucial to understand the role of various nanostructures in the generation and transport of charge carriers. The sample processing conditions are carefully controlled to eliminate any processing-related effects on the carrier generation and on device performance with the aim of keeping the conjugated polymer phase constant and only varying the shape of the inorganic nanoparticle acceptor phase. The electrodeless, flash photolysis time-resolved microwave conductivity (FP-TRMC) technique is used and the results are compared to the efficiency of photovoltaic devices that incorporate the same active layer. It is observed that in nanorods and tetrapods blended with P3HT, the high aspect ratios provide a pathway for the electrons to move away from the dissociation site even in the absence of an applied electric field, resulting in enhanced carrier lifetimes that correlate to increased efficiencies in devices. The processing conditions that yield optimum performance in high aspect ratio CdSe nanoparticles blended with P3HT result in poorly performing quantum dot CdSe:P3HT devices, indicating that the latter devices are inherently limited by the absence of the dimensionality that allows for efficient, prolonged charge separation at the polymer:CdSe interface. C1 [Dayal, Smita; Reese, Matthew O.; Ferguson, Andrew J.; Ginley, David S.; Rumbles, Garry; Kopidakis, Nikos] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Dayal, S (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM smita.dayal@nrel.gov; nikos.kopidakis@nrel.gov RI dayal, smita/F-2756-2011; Rumbles, Garry/A-3045-2014; Kopidakis, Nikos/N-4777-2015; OI Ferguson, Andrew/0000-0003-2544-1753 FU Department of Energy; Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U. S. Department of Energy [ER460085] FX This work was funded by the Department of Energy's EERE Solar Technology Program through the National Center for Photovoltaics Seed Fund Program. The authors would like to thank Dr. Andrew Norman for transmission electron microscopy. GR gratefully acknowledges the Solar Photochemistry Program within the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U. S. Department of Energy through grant ER460085 for funding the development of the transient microwave conductivity measurement. NR 28 TC 108 Z9 109 U1 3 U2 61 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1616-301X J9 ADV FUNCT MATER JI Adv. Funct. Mater. PD AUG 23 PY 2010 VL 20 IS 16 BP 2629 EP 2635 DI 10.1002/adfm.201000628 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 648KG UT WOS:000281691900009 ER PT J AU Perkins, JM Fearn, S Cook, SN Srinivasan, R Rouleau, CM Christen, HM West, GD Morris, RJH Fraser, HL Skinner, SJ Kilner, JA McComb, DW AF Perkins, James M. Fearn, Sarah Cook, Stuart N. Srinivasan, Rajagopalan Rouleau, Chris M. Christen, Hans M. West, Geoff D. Morris, Richard J. H. Fraser, Hamish L. Skinner, Stephen J. Kilner, John A. McComb, David W. TI Anomalous Oxidation States in Multilayers for Fuel Cell Applications SO ADVANCED FUNCTIONAL MATERIALS LA English DT Article ID IONIC-CONDUCTIVITY; THIN-FILMS; ELECTRICAL-CONDUCTIVITY; NANOCRYSTALLINE CERIA; ZIRCONIA; CONDUCTORS AB Significant recent interest has been directed towards the relationship between interfaces and reports of enhanced ionic conductivity. To gain a greater understanding of the effects of hetero-interfaces on ionic conductivity, advanced analytical techniques including electron microscopy (TEM/STEM), electron energy loss spectroscopy (EELS), and secondary ion mass spectrometry (SIMS) are used to characterize CeO(2)/Ce(0.85)Sm(0.15)O(2) multilayer thin films grown by pulsed laser deposition. High quality growth is observed, but ionic conductivity measured by impedance spectroscopy and (18)O tracer experiments is consistent with bulk materials. EELS analysis reveals the unusual situation of layers containing only Ce(IV) adjacent to layers containing both Ce(III) and Ce(IV). Post oxygen annealing induced oxygen diffusion and mixed oxidation states in both layers, but only in the vicinity of low angle grain boundaries perpendicular to the layers. The implications of the anomalous behavior of the Ce oxidation states on the design of novel electrolytes for solid oxide fuel cells is discussed. C1 [Perkins, James M.; Fearn, Sarah; Cook, Stuart N.; Skinner, Stephen J.; Kilner, John A.; McComb, David W.] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England. [Rouleau, Chris M.; Christen, Hans M.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [West, Geoff D.] Univ Loughborough, Loughborough, Leics, England. [Morris, Richard J. H.] Univ Warwick, Coventry CV4 7AL, W Midlands, England. [Srinivasan, Rajagopalan; Fraser, Hamish L.] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA. RP Perkins, JM (reprint author), Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England. EM j.m.perkins@imperial.ac.uk; d.mccomb@imperial.ac.uk RI Christen, Hans/H-6551-2013; Cook, Stuart/N-1417-2015; Rouleau, Christopher/Q-2737-2015; McComb, David/A-7808-2010; OI Christen, Hans/0000-0001-8187-7469; Cook, Stuart/0000-0001-9813-5808; Rouleau, Christopher/0000-0002-5488-3537; Skinner, Stephen/0000-0001-5446-2647 FU DOE [2009-022]; EPSRC [EP/C51596X/1, EP/D068924/1]; DTA; The Royal Society; Royal Academy of Engineering; AtlantICC alliance partnership; Division of Scientific User Facilities, U.S. Department of Energy FX The authors would like to thank Igor Kosacki for helpful discussions. We would like to acknowledge Paul Thomas (Gatan inc.) for invaluable advice. Funding was obtained by DOE access grant number 2009-022, the EPSRC (grant numbers EP/C51596X/1 and EP/D068924/1), DTA, The Royal Society, The Royal Academy of Engineering and the AtlantICC alliance partnership. Research conducted at the Center for Nanophase Materials Sciences and the Shared Research Equipment user facility was performed at Oak Ridge National Laboratory, and sponsored by the Division of Scientific User Facilities, U.S. Department of Energy. NR 30 TC 9 Z9 9 U1 0 U2 27 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1616-301X J9 ADV FUNCT MATER JI Adv. Funct. Mater. PD AUG 23 PY 2010 VL 20 IS 16 BP 2664 EP 2674 DI 10.1002/adfm.201000279 PG 11 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 648KG UT WOS:000281691900014 ER PT J AU Han, WQ Zhang, Y Nam, CY Black, CT Mendez, EE AF Han, Wei-Qiang Zhang, Yan Nam, Chang-Yong Black, C. T. Mendez, E. E. TI Growth and electronic properties of GaN/ZnO solid solution nanowires SO APPLIED PHYSICS LETTERS LA English DT Article DE carrier density; electrical conductivity; electron mobility; energy gap; field effect transistors; gallium compounds; II-VI semiconductors; nanofabrication; photoconductivity; semiconductor growth; sol-gel processing; solid solutions; wide band gap semiconductors; zinc compounds ID RICH (GA1-XZNX)(N1-XOX) PHOTOCATALYSTS; VISIBLE-LIGHT; GAN; SILICON; WATER AB We have grown single-crystal (Ga1-xZnx)(N1-xOx) solid-solution nanowires using nanostructured ZnGa2O4 precursor prepared by a sol-gel method. From electrical transport measurements in individual nanowire field-effect transistors, we have identified the conduction as n-type and obtained a background carrier density (similar to 10(19) cm(-3)) and an electron mobility (similar to 1 cm(2)/V s) that are consistent with chemical disorder and a large number of charge traps, as confirmed by the devices' photocurrent response. From the dependence of the device photoresponse on incident light wavelength, we have determined the energy band gap of (Ga0.88Zn0.12)(N0.88O0.12) to be as much as similar to 0.6 eV lower than that of GaN or ZnO. (C) 2010 American Institute of Physics. [doi:10.1063/1.3483132] C1 [Han, Wei-Qiang; Nam, Chang-Yong; Black, C. T.; Mendez, E. E.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. [Zhang, Yan; Mendez, E. E.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. RP Han, WQ (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. EM whan@bnl.gov RI Han, WQ/E-2818-2013; Nam, Chang-Yong/D-4193-2009 OI Nam, Chang-Yong/0000-0002-9093-4063 FU U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886]; BNL; NSF [DMR 0705131] FX This research was carried out at the Center for Functional Nanomaterials, Brookhaven National Laboratory (BNL), which is supported by the U.S. Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. C.Y.N. acknowledges support by BNL's Goldhaber Distinguished Fellowship Program. Y.Z. acknowledges NSF support (Grant No. DMR 0705131). NR 17 TC 13 Z9 14 U1 2 U2 45 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 2010 VL 97 IS 8 AR 083108 DI 10.1063/1.3483132 PG 3 WC Physics, Applied SC Physics GA 643OM UT WOS:000281306500055 ER PT J AU Haridas, M Basu, JK Gosztola, DJ Wiederrecht, GP AF Haridas, M. Basu, J. K. Gosztola, D. J. Wiederrecht, G. P. TI Photoluminescence spectroscopy and lifetime measurements from self-assembled semiconductor-metal nanoparticle hybrid arrays SO APPLIED PHYSICS LETTERS LA English DT Article DE cadmium compounds; gold; II-VI semiconductors; nanoparticles; photoluminescence; polymer blends; self-assembly; semiconductor quantum dots; thin films; wide band gap semiconductors ID QUANTUM DOTS; CDSE; EMISSION AB We present results of photoluminescence spectroscopy and lifetime measurements on thin film hybrid arrays of semiconductor quantum dots and metal nanoparticles embedded in a block copolymer template. The intensity of emission as well as the measured lifetime would be controlled by varying the volume fraction and location of gold nanoparticles in the matrix. We demonstrate the ability to both enhance and quench the luminescence in the hybrids as compared to the quantum dot array films while simultaneously engineering large reduction in luminescence lifetime with incorporation of gold nanoparticles. (C) 2010 American Institute of Physics. [doi:10.1063/1.3483162] C1 [Haridas, M.; Basu, J. K.] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India. [Gosztola, D. J.; Wiederrecht, G. P.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Haridas, M (reprint author), Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India. EM basu@physics.iisc.ernet.in RI Gosztola, David/D-9320-2011; Mundoor, Haridas/L-9948-2016 OI Gosztola, David/0000-0003-2674-1379; Mundoor, Haridas/0000-0001-6589-6475 FU U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]; UGC FX We acknowledge that the 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. We acknowledge DST-IISc Nano Science Initiative for TEM and optical measurements and Mr. Shankar, IISc, for assistance with high resolution SEM imaging. M.H. acknowledges UGC for financial support. NR 21 TC 14 Z9 14 U1 2 U2 18 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 2010 VL 97 IS 8 AR 083307 DI 10.1063/1.3483162 PG 3 WC Physics, Applied SC Physics GA 643OM UT WOS:000281306500063 ER PT J AU Li, X Barry, EA Zavada, JM Nardelli, MB Kim, KW AF Li, X. Barry, E. A. Zavada, J. M. Nardelli, M. Buongiorno Kim, K. W. TI Influence of electron-electron scattering on transport characteristics in monolayer graphene SO APPLIED PHYSICS LETTERS LA English DT Article ID MONTE-CARLO AB The influence of electron-electron scattering on the distribution function and transport characteristics of intrinsic monolayer graphene is investigated via an ensemble Monte Carlo simulation. Due to the linear dispersion relation in the vicinity of the Dirac points, it is found that pair-wise collisions in graphene do not conserve the ensemble average velocity in contrast to conventional semiconductors with parabolic energy bands. Numerical results indicate that electron-electron scattering can lead to a decrease in the low field mobility by more than a factor of 2 for moderate electron densities. The corresponding degradation in the saturation velocity is more modest at around 15%. At high densities, the impact gradually diminishes due to increased degeneracy. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3483612] C1 [Li, X.; Barry, E. A.; Zavada, J. M.; Kim, K. W.] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA. [Nardelli, M. Buongiorno] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA. [Nardelli, M. Buongiorno] Oak Ridge Natl Lab, CSMD, Oak Ridge, TN 37831 USA. RP Li, X (reprint author), N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA. EM kwk@ncsu.edu RI Buongiorno Nardelli, Marco/C-9089-2009 FU Defense Advanced Research Projects Agency/HRL Laboratories; US Army Research Office; SRC Focus Center on Functional Engineered Nano Architectonics (FENA); Office of Basic Energy Sciences, U.S. DOE at Oak Ridge National Laboratory [DE-AC05-00OR22725] FX This work was supported, in part, by the Defense Advanced Research Projects Agency/HRL Laboratories (the CERA program), the US Army Research Office, and the SRC Focus Center on Functional Engineered Nano Architectonics (FENA). M.B.N. wishes to acknowledge partial support from the Office of Basic Energy Sciences, U.S. DOE at Oak Ridge National Laboratory under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. NR 21 TC 29 Z9 29 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 2010 VL 97 IS 8 AR 082101 DI 10.1063/1.3483612 PG 3 WC Physics, Applied SC Physics GA 643OM UT WOS:000281306500031 ER PT J AU Li, ZF Zhao, RK Koschny, T Kafesaki, M Alici, KB Colak, E Caglayan, H Ozbay, E Soukoulis, CM AF Li, Zhaofeng Zhao, Rongkuo Koschny, Thomas Kafesaki, Maria Alici, Kamil Boratay Colak, Evrim Caglayan, Humeyra Ozbay, Ekmel Soukoulis, C. M. TI Chiral metamaterials with negative refractive index based on four "U" split ring resonators SO APPLIED PHYSICS LETTERS LA English DT Article AB A uniaxial chiral metamaterial is constructed by double-layered four "U" split ring resonators mutually twisted by 90 degrees. It shows a giant optical activity and circular dichroism. The retrieval results reveal that a negative refractive index is realized for circularly polarized waves due to the large chirality. The experimental results are in good agreement with the numerical results. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3457448] C1 [Li, Zhaofeng; Alici, Kamil Boratay; Colak, Evrim; Caglayan, Humeyra; Ozbay, Ekmel] Bilkent Univ, Nanotechnol Res Ctr, TR-06800 Ankara, Turkey. [Li, Zhaofeng; Alici, Kamil Boratay; Colak, Evrim; Caglayan, Humeyra; Ozbay, Ekmel] Bilkent Univ, Dept Phys, TR-06800 Ankara, Turkey. [Zhao, Rongkuo; Koschny, Thomas; Soukoulis, C. M.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Zhao, Rongkuo; Koschny, Thomas; Soukoulis, C. M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Zhao, Rongkuo] Beijing Normal Univ, Dept Phys, Appl Opt Beijing Area Major Lab, Beijing 100875, Peoples R China. [Koschny, Thomas; Kafesaki, Maria; Soukoulis, C. M.] Univ Crete, FORTH, Inst Elect Struct & Laser, Iraklion 71110, Crete, Greece. [Koschny, Thomas; Kafesaki, Maria; Soukoulis, C. M.] Univ Crete, Dept Mat Sci & Technol, Iraklion 71110, Crete, Greece. [Ozbay, Ekmel] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey. RP Li, ZF (reprint author), Bilkent Univ, Nanotechnol Res Ctr, TR-06800 Ankara, Turkey. EM soukoulis@ameslab.gov RI Zhao, Rongkuo/B-5731-2008; Kafesaki, Maria/E-6843-2012; Alici, Kamil Boratay/F-4013-2012; Caglayan, Humeyra/G-5786-2012; Colak, Evrim/K-5405-2015; Soukoulis, Costas/A-5295-2008 OI Kafesaki, Maria/0000-0002-9524-2576; Alici, Kamil Boratay/0000-0003-2924-7464; Colak, Evrim/0000-0002-4961-5060; FU European Union; TUBITAK [107A004, 107A012]; Turkish Academy of Sciences; China Scholarship Council (CSC) FX This work is supported by the European Union under the projects EU-PHOME and EU-ECONAM, and TUBITAK under the Project Nos. 107A004 and 107A012. One of the authors (E.O.) also acknowledges partial support from the Turkish Academy of Sciences. Rongkuo Zhao acknowledges the China Scholarship Council (CSC) for financial support. NR 20 TC 96 Z9 98 U1 4 U2 60 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 2010 VL 97 IS 8 AR 081901 DI 10.1063/1.3457448 PG 3 WC Physics, Applied SC Physics GA 643OM UT WOS:000281306500020 ER PT J AU Soliman, YM Su, MF Leseman, ZC Reinke, CM El-Kady, I Olsson, RH AF Soliman, Y. M. Su, M. F. Leseman, Z. C. Reinke, C. M. El-Kady, I. Olsson, R. H., III TI Effects of release holes on microscale solid-solid phononic crystals SO APPLIED PHYSICS LETTERS LA English DT Article AB Solid-solid phononic crystals exhibit wider band gaps than those observed with air-solid phononic crystals. For micromachined phononic crystal devices it is advantageous to release the phononic crystal to avoid propagation losses. In a solid-solid phononic crystal operating in the low megahertz range, due to the large lattice constant, it is necessary to place release holes in the center of the inclusions to release devices from the substrate while minimizing the effect the release hole has on the band gap. In this report, we investigate the effect of release holes on phononic band gaps and highlight the need for careful design. It was determined that release holes of radius r(air holes)/r(inclusion)=0.26 can reliably release a phononic crystal membrane composed of W inclusions in SiO(2) without significantly compromising the phononic band gap. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3476354] C1 [Olsson, R. H., III] Sandia Natl Labs, Dept Adv MEMS, Albuquerque, NM 87185 USA. [Soliman, Y. M.; Su, M. F.] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA. [Leseman, Z. C.] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA. [Reinke, C. M.; El-Kady, I.] Sandia Natl Labs, Dept Photon Microsyst Technol, Albuquerque, NM 87185 USA. RP Olsson, RH (reprint author), Sandia Natl Labs, Dept Adv MEMS, POB 5800, Albuquerque, NM 87185 USA. EM rholsso@sandia.gov RI El-Kady, Ihab/D-2886-2013 OI El-Kady, Ihab/0000-0001-7417-9814 FU Sandia National Laboratories [DE-AC04-94AL85000] FX This work was supported by the Laboratory Directed Research and Development program at Sandia National Laboratories. Sandia National Laboratories is a multiprogram laboratory operated by the Sandia Corporation, Lock-heed Martin Co., for the United States Department of Energy's National Nuclear Security Administration under Contract No. DE-AC04-94AL85000. NR 10 TC 6 Z9 6 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 2010 VL 97 IS 8 AR 081907 DI 10.1063/1.3476354 PG 3 WC Physics, Applied SC Physics GA 643OM UT WOS:000281306500026 ER PT J AU Song, JW Aizin, GR Mikalopas, J Kawano, Y Ishibashi, K Aoki, N Reno, JL Ochiai, Y Bird, JP AF Song, J. W. Aizin, G. R. Mikalopas, J. Kawano, Y. Ishibashi, K. Aoki, N. Reno, J. L. Ochiai, Y. Bird, J. P. TI Bolometric terahertz detection in pinched-off quantum point contacts SO APPLIED PHYSICS LETTERS LA English DT Article DE photoconductivity; quantum point contacts; terahertz waves ID FIELD-EFFECT TRANSISTORS; SINGLE-PHOTON DETECTOR; RESONANT DETECTION; PLASMA-WAVES; TRANSPORT; RADIATION; SUBTERAHERTZ; CONDUCTANCE; DEVICES; RANGE AB Terahertz (>1 THz) irradiation of pinched-off quantum point contacts (QPCs) generates a pronounced photo-current due to radiation-induced heating. This response is reproduced by a model of temperature-dependent transmission through a saddle potential, confirming its bolometric nature. (C) 2010 American Institute of Physics. [doi:10.1063/1.3475488] C1 [Song, J. W.; Bird, J. P.] SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA. [Aizin, G. R.; Mikalopas, J.] CUNY, Dept Phys Sci, Kingsborough Coll, Brooklyn, NY 11235 USA. [Kawano, Y.; Ishibashi, K.] RIKEN, Adv Device Lab, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. [Aoki, N.; Ochiai, Y.; Bird, J. P.] Chiba Univ, Grad Sch Adv Integrat Sci, Inage Ku, Chiba 2638522, Japan. [Reno, J. L.] Sandia Natl Labs, Dept 1132, CINT, Albuquerque, NM 87185 USA. RP Song, JW (reprint author), SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA. EM jbird@buffalo.edu RI Bird, Jonathan/G-4068-2010; Ishibashi, Koji/G-7065-2012 OI Bird, Jonathan/0000-0002-6966-9007; FU NSF [ECS-0609146]; DoE; PSC-CUNY [62040-00 40]; U.S. DoE [DE-AC04-94AL85000] FX Work supported by NSF (ECS-0609146), DoE, and PSC-CUNY (62040-00 40), and performed, in part, at the Center for Integrated Nanotechnologies, a U.S. DoE Office of Basic Energy Sciences nanoscale science research center. Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a Lockheed-Martin Co., for the U.S. DoE (Contract No. DE-AC04-94AL85000) NR 25 TC 9 Z9 9 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 23 PY 2010 VL 97 IS 8 AR 083109 DI 10.1063/1.3475488 PG 3 WC Physics, Applied SC Physics GA 643OM UT WOS:000281306500056 ER PT J AU Om, H Baker, GA Behera, K Kumar, V Verma, KK Pandey, S AF Om, Hari Baker, Gary A. Behera, Kamalakanta Kumar, Vinod Verma, Krishan K. Pandey, Siddharth TI Self-Probing of Micellization within Phenyl-Containing Surfactant Solutions SO CHEMPHYSCHEM LA English DT Article DE amphiphiles; chromophores; fluorescence spectroscopy; micelles; surfactants ID CRITICAL MICELLE CONCENTRATION; NONIONIC SURFACTANTS; AQUEOUS-SOLUTION; CETYLTRIMETHYLAMMONIUM BROMIDE; MICROENVIRONMENTAL PROPERTIES; MIXED MICELLIZATION; TRITON X100; ALKYL CHAIN; FLUORESCENCE; CONDUCTANCE C1 [Om, Hari; Behera, Kamalakanta; Kumar, Vinod; Pandey, Siddharth] Indian Inst Technol Delhi, Dept Chem, New Delhi 110016, India. [Om, Hari; Verma, Krishan K.] Maharshi Dayanand Univ, Dept Chem, Rohtak 124001, Haryana, India. [Baker, Gary A.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Pandey, S (reprint author), Indian Inst Technol Delhi, Dept Chem, Hauz Khas, New Delhi 110016, India. EM sipandey@chemistry.iitd.ac.in RI Baker, Gary/H-9444-2016; OI Baker, Gary/0000-0002-3052-7730; Behera, Kamalakanta/0000-0001-7883-5401 FU DST, India; CSIR, India FX S. P. thanks the DST, India for partial support. H. O., V K., and K. B. thank the CSIR, India for awards of research fellowships. NR 42 TC 6 Z9 6 U1 0 U2 6 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1439-4235 J9 CHEMPHYSCHEM JI ChemPhysChem PD AUG 23 PY 2010 VL 11 IS 12 BP 2510 EP 2513 DI 10.1002/cphc.201000390 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 648JZ UT WOS:000281691100007 PM 20632360 ER PT J AU Coquard, L Pietralla, N Rainovski, G Ahn, T Bettermann, L Carpenter, MP Janssens, RVF Leske, J Lister, CJ Moller, O Rother, W Werner, V Zhu, S AF Coquard, L. Pietralla, N. Rainovski, G. Ahn, T. Bettermann, L. Carpenter, M. P. Janssens, R. V. F. Leske, J. Lister, C. J. Moeller, O. Rother, W. Werner, V. Zhu, S. TI Evolution of the mixed-symmetry 2(1,ms)(+) quadrupole-phonon excitation from spherical to gamma-soft Xe nuclei SO PHYSICAL REVIEW C LA English DT Article ID INTERACTING BOSON MODEL; NEUTRON-CAPTURE; STATES; NUCLIDES; XE-130; DECAY; LIMIT AB Low-lying collective states of Xe-130,Xe-132 have been investigated by gamma-ray spectroscopy following (12C)(Xe,Xe*)C-12 projectile Coulomb excitation. The one- phonon 2(1,ms)(+) states have been identified: the 2(4)(+) state at 2150 keV with B(M1; 2(4)(+) -> 2(1)(+)) = 0.15(4)mu(2)(N) N in Xe-130 and the 2(3)(+) state at 1985 keV with B(M1;2(3)(+) -> 2(1)(+)) = 0.22(6)mu(2)(N) in Xe-132. The evolution of the one- phonon 2(1,ms)(+) states in the even- even stable xenon isotopic chain from the vibrators near N = 82 to the gamma-soft nuclei toward midshell is discussed. C1 [Coquard, L.; Pietralla, N.; Rainovski, G.; Ahn, T.; Leske, J.; Moeller, O.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany. [Rainovski, G.] Sofia Univ St Kliment Ohridski, Fac Phys, BG-1164 Sofia, Bulgaria. [Ahn, T.; Werner, V.] Yale Univ, Wright Nucl Struct Lab, New Heaven, CT 06520 USA. [Bettermann, L.; Rother, W.] Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany. [Carpenter, M. P.; Janssens, R. V. F.; Lister, C. J.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Coquard, L (reprint author), Tech Univ Darmstadt, Inst Kernphys, Petersenstr 30, D-64289 Darmstadt, Germany. RI Carpenter, Michael/E-4287-2015; Ahn, Tan/C-9158-2016; Rainovski, Georgi/A-3450-2008; Werner, Volker/C-1181-2017 OI Carpenter, Michael/0000-0002-3237-5734; Ahn, Tan/0000-0003-2249-7399; Rainovski, Georgi/0000-0002-1729-0249; Werner, Volker/0000-0003-4001-0150 FU US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357, DE-FG02-91ER-40609]; DFG [Pi 393/2-2, SFB 634,]; German-Bulgarian [D/08/02055]; Bg NSF [DO 02-219]; Helmholtz International Center (HIC); Alexander von Humboldt foundation FX We would like to thank the staff at ANL for their support during the experiments and P. von Brentano, A. Dewald, C. Fransen, F. Iachello, J. Jolie, R. V. Jolos, N. Lo Iudice, P. von Neumann-Cosel, T. Otsuka, V. Ponomarev, A. Poves and C. Stoyanov for discussions. This work was partially supported by the US Department of Energy, Office of Nuclear Physics, under Contract Nos. DE-AC02-06CH11357 and DE-FG02-91ER-40609, by the DFG under Grant Nos. Pi 393/2-2 and SFB 634, by the German-Bulgarian exchange programme under Grant No. D/08/02055, by the Bg NSF under Contract No. DO 02-219, and by the Helmholtz International Center (HIC) for FAIR. G. R. acknowledges support from the Alexander von Humboldt foundation. NR 29 TC 26 Z9 26 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD AUG 23 PY 2010 VL 82 IS 2 AR 024317 DI 10.1103/PhysRevC.82.024317 PG 7 WC Physics, Nuclear SC Physics GA 641PB UT WOS:000281139300001 ER PT J AU Guo, XF De Decker, Y Evans, JW AF Guo, Xiaofang De Decker, Y. Evans, J. W. TI Metastability in Schloegl's second model for autocatalysis: Lattice-gas realization with particle diffusion SO PHYSICAL REVIEW E LA English DT Article ID KINETIC PHASE-TRANSITIONS; SURFACE-REACTION MODEL; INTERFACE PROPAGATION; SYSTEMS; RELAXATION; ADSORBATES; CATALYSIS; DYNAMICS; BEHAVIOR; STATES AB We analyze metastability associated with a discontinuous nonequilibrium phase transition in a stochastic lattice-gas realization of Schloegl's second model for autocatalysis. This model realization involves spontaneous annihilation, autocatalytic creation, and diffusion of particles on a square lattice, where creation at empty sites requires an adjacent diagonal pair of particles. This model, also known as the quadratic contact process, exhibits discontinuous transition between a populated active state and a particle-free vacuum or "poisoned" state, as well as generic two-phase coexistence. The poisoned state exists for all particle annihilation rates p>0 and hop rates h >= 0 and is an absorbing state in the sense of Markovian processes. The active or reactive steady state exists only for p below a critical value, p(e)=p(e)(h), but a metastable extension appears for a range of higher p up to an effective upper spinodal point, p(s+)=p(s+)(h) (i.e., p(s+)>p(e)). For selected h, we assess the location of p(s+)(h) by characterizing both the poisoning kinetics and the propagation of interfaces separating vacuum and active states as a function of p. C1 [Guo, Xiaofang; Evans, J. W.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. [Guo, Xiaofang; Evans, J. W.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Guo, Xiaofang; Evans, J. W.] Iowa State Univ, Dept Math, Ames, IA 50011 USA. [De Decker, Y.] Univ Libre Bruxelles, Interdisciplinary Ctr Nonlinear Phenomena & Compl, B-1050 Brussels, Belgium. RP Guo, XF (reprint author), Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. OI De Decker, Yannick/0000-0002-7493-9657 FU Division of Chemical Sciences of the U.S. Department of Energy (Basic Energy Sciences); Iowa State University [DE-AC02-07CH11358] FX JWE thanks Da-Jiang Liu for discussions on poisoning dynamics. This work was supported by the Division of Chemical Sciences of the U.S. Department of Energy (Basic Energy Sciences). It was performed at Ames Laboratory which is operated for the U.S. DOE by Iowa State University under Contract No. DE-AC02-07CH11358. NR 43 TC 7 Z9 7 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD AUG 23 PY 2010 VL 82 IS 2 AR 021121 DI 10.1103/PhysRevE.82.021121 PN 1 PG 12 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 641PG UT WOS:000281140000001 PM 20866789 ER PT J AU Scandale, W Arduini, G Assmann, R Bracco, C Gilardoni, S Ippolito, V Laface, E Losito, R Masi, A Metral, E Previtali, V Redaelli, S Silari, M Tlustos, L Bagli, E Baricordi, S Dalpiaz, P Guidi, V Mazzolari, A Vincenzi, D Della Mea, G Lombardi, A De Salvador, D Vallazza, E Bolognini, D Hasan, S Lietti, D Mascagna, V Mattera, A Prest, M Cavoto, G Ludovici, L Mirarchi, D Santacesaria, R Valente, P Murtas, F Afonin, AG Chesnokov, YA Maisheev, VA Yazynin, IA Kovalenko, AD Taratin, AM Denisov, AS Gavrikov, YA Ivanov, YM Lapina, LP Malyarenko, LG Skorobogatov, VV Suvorov, VM Vavilov, SA Mokhov, N Still, D Robert-Demolaize, G Markiewicz, T Oriunno, M AF Scandale, W. Arduini, G. Assmann, R. Bracco, C. Gilardoni, S. Ippolito, V. Laface, E. Losito, R. Masi, A. Metral, E. Previtali, V. Redaelli, S. Silari, M. Tlustos, L. Bagli, E. Baricordi, S. Dalpiaz, P. Guidi, V. Mazzolari, A. Vincenzi, D. Della Mea, Gianantonio Lombardi, A. De Salvador, D. Vallazza, E. Bolognini, D. Hasan, S. Lietti, D. Mascagna, V. Mattera, A. Prest, M. Cavoto, G. Ludovici, L. Mirarchi, D. Santacesaria, R. Valente, P. Murtas, F. Afonin, A. G. Chesnokov, Yu. A. Maisheev, V. A. Yazynin, I. A. Kovalenko, A. D. Taratin, A. M. Denisov, A. S. Gavrikov, Yu. A. Ivanov, Yu. M. Lapina, L. P. Malyarenko, L. G. Skorobogatov, V. V. Suvorov, V. M. Vavilov, S. A. Mokhov, N. Still, D. Robert-Demolaize, G. Markiewicz, T. Oriunno, M. TI First results on the SPS beam collimation with bent crystals SO PHYSICS LETTERS B LA English DT Article DE Accelerator; Beam collimation; Crystal; Channeling ID EXTRACTION AB Experiments were performed at the CERN SPS with 120 GeV/c stored proton beams to assess the possibility of beam halo collimation assisted by bent crystals. A bent crystal was used to deflect horizontally by an angle of about 170 mu rad the beam halo protons in channeling states directing them into a 60 cm long tungsten absorber. The halo loss rate due to nuclear inelastic interactions of protons in the aligned crystal was up to five times smaller than for its amorphous orientation. Channeled fractions, (75 +/- 4)% and (85 +/- 5)% for the two tested silicon crystals, were measured by intercepting the deflected beam with another collimator located between the crystals and the absorber. The pixel detector (MEDIPIX) installed in a Roman pot inside the beam pipe was used to obtain visual images of the deflected beam. (C) 2010 Elsevier B.V. All rights reserved. C1 [Kovalenko, A. D.; Taratin, A. M.] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia. [Scandale, W.; Arduini, G.; Assmann, R.; Bracco, C.; Gilardoni, S.; Ippolito, V.; Laface, E.; Losito, R.; Masi, A.; Metral, E.; Previtali, V.; Redaelli, S.; Silari, M.; Tlustos, L.] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland. [Bagli, E.; Baricordi, S.; Dalpiaz, P.; Guidi, V.; Mazzolari, A.; Vincenzi, D.] Univ Ferrara, Dipartimento Fis, INFN Sez Ferrara, I-44100 Ferrara, Italy. [Della Mea, Gianantonio; Lombardi, A.; De Salvador, D.] INFN Lab Nazl Legnaro, I-35020 Legnaro, PD, Italy. [Vallazza, E.] INFN Sez Trieste, I-34127 Trieste, Italy. [Bolognini, D.; Hasan, S.; Lietti, D.; Mascagna, V.; Mattera, A.; Prest, M.] Univ Insubria, I-22100 Como, Italy. [Bolognini, D.; Hasan, S.; Lietti, D.; Mascagna, V.; Mattera, A.; Prest, M.] INFN Sez Milano Bicocca, I-20126 Milan, Italy. [Cavoto, G.; Ludovici, L.; Mirarchi, D.; Santacesaria, R.; Valente, P.] INFN Sez Roma, I-00185 Rome, Italy. [Murtas, F.] INFN LNF, I-00044 Rome, Italy. [Afonin, A. G.; Chesnokov, Yu. A.; Maisheev, V. A.; Yazynin, I. A.] Inst High Energy Phys, RU-142284 Protvino, Russia. [Denisov, A. S.; Gavrikov, Yu. A.; Ivanov, Yu. M.; Lapina, L. P.; Malyarenko, L. G.; Skorobogatov, V. V.; Suvorov, V. M.; Vavilov, S. A.] Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Reg, Russia. [Mokhov, N.; Still, D.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Robert-Demolaize, G.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Markiewicz, T.; Oriunno, M.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA. RP Taratin, AM (reprint author), Joint Inst Nucl Res, Joliot Curie 6, Dubna 141980, Moscow Region, Russia. EM alexander.taratin@cern.ch RI valente, paolo/A-6640-2010; Ludovici, Lucio/F-5917-2011; Murtas, Fabrizio/B-5729-2012; Bagli, Enrico/E-5906-2012; Vincenzi, Donato/J-5064-2012; Ippolito, Valerio/L-1435-2016; Assmann, Ralph/L-8457-2016; Mazzolari, Andrea/A-1100-2017; OI valente, paolo/0000-0002-5413-0068; Ludovici, Lucio/0000-0003-1970-9960; Bagli, Enrico/0000-0003-3913-7701; Ippolito, Valerio/0000-0001-5126-1620; Mazzolari, Andrea/0000-0003-0804-6778; De Salvador, Davide/0000-0002-1879-1010; PREST, MICHELA/0000-0003-3161-4454; Murtas, Fabrizio/0000-0002-7041-6541; Cavoto, Gianluca/0000-0003-2161-918X; guidi, vincenzo/0000-0001-9726-8481 FU Russian Foundation for Basic Research [05-02-17622, 06-02-16912]; RF President Foundation [SS-3057-2006-2]; Russian Academy of Sciences; [RFBR-CERN 08-02-91020] FX We wish to acknowledge the strong support of the EN-STI group during the hardware construction and installation and of the operation crews during the data tacking. We also acknowledge the partial support by the Russian Foundation for Basic Research Grants 05-02-17622 and 06-02-16912, the RF President Foundation Grant SS-3057-2006-2, the "Fundamental Physics Program of Russian Academy of Sciences" and the grant RFBR-CERN 08-02-91020. NR 18 TC 58 Z9 58 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD AUG 23 PY 2010 VL 692 IS 2 BP 78 EP 82 DI 10.1016/j.physletb.2010.07.023 PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 653SL UT WOS:000282116900004 ER PT J AU Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Ero, J Fabjan, C Friedl, M Fruehwirth, R Ghete, VM Hammer, J Haensel, S Hoch, M Horemann, N Hrubec, J Jeitler, M Kasieczka, G Kiesenhofer, W Krammer, M Liko, D Mikulec, I Pernicka, M Rohringer, H Schofbeck, R Strauss, J Taurok, A Teischinger, F Waltenberger, W Walzel, G Widl, E Wulz, CE Mossolov, V Shumeiko, N Gonzalez, JS Benucci, L Ceard, L De Wolf, EA Hashemi, M Janssen, X Maes, T Mucibello, L Ochesanu, S Roland, B Rougny, R Selvaggi, M Van Haevermaet, H Van Mechelen, P Van Remortel, N Adler, V Beauceron, S Blyweert, S D'Hondt, J Devroede, O Kalogeropoulos, A Maes, J Maes, M Tavernier, S Van Doninck, W Van Mulders, P Villella, I Chabert, EC Charaf, O Clerbaux, B De Lentdecker, 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Asaadi, J. Eusebi, R. Gilmore, J. Gurrola, A. Kamon, T. Khotilovich, V. Montalvo, R. Nguyen, C. N. Pivarski, J. Safonov, A. Sengupta, S. Toback, D. Weinberger, M. Akchurin, N. Bardak, C. Damgov, J. Jeong, C. Kovitanggoon, K. Lee, S. W. Mane, R. Roh, Y. Sill, A. Volobouev, I. Wigmans, R. Yazgan, E. Appelt, E. Brownson, E. Engh, D. Florez, C. Gabella, W. Johns, W. Kurt, P. Maguire, C. Melo, A. Sheldon, P. Velkovska, J. Arenton, M. W. Balazs, M. Buehler, M. Conetti, S. Cox, B. Hirosky, R. Ledovskoy, A. Neu, C. Yohay, R. Gollapinni, S. Gunthoti, K. Harr, R. Karchin, P. E. Mattson, M. Milstene, C. Sakharov, A. Anderson, M. Bachtis, M. Bellinger, J. N. Carlsmith, D. Dasu, S. Dutta, S. Efron, J. Gray, L. Grogg, K. S. Grothe, M. Herndon, M. Klabbers, P. Klukas, J. Lanaro, A. Lazaridis, C. Leonard, J. Lomidze, D. Loveless, R. Mohapatra, A. Polese, G. Reeder, D. Savin, A. Smith, W. H. Swanson, J. Weinberg, M. CA CMS Collaboration TI Measurement of the charge ratio of atmospheric muons with the CMS detector SO PHYSICS LETTERS B LA English DT Article DE CMS; Physics; Muon; Cosmic rays; Charge ratio ID SEA-LEVEL; FLUX AB We present a measurement of the ratio of positive to negative muon fluxes from cosmic ray interactions in the atmosphere, using data collected by the CMS detector both at ground level and in the underground experimental cavern at the CERN LHC. Muons were detected in the momentum range from 5 GeV/c to 1 TeV/c. The surface flux ratio is measured to be 1.2766 +/- 0.0032 (stat.) +/- 0.0032 (syst.), independent of the muon momentum, below 100 GeV/c. This is the most precise measurement to date. At higher momenta the data are consistent with an increase of the charge ratio, in agreement with cosmic ray shower models and compatible with previous measurements by deep-underground experiments. (C) 2010 Published by Elsevier B.V. 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[De Mattia, M.; Gasparini, F.; Gasparini, U.; Giubilato, P.; Kaminskiy, A.; Margoni, M.; Meneguzzo, A. T.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Tosi, M.; Vanini, S.; Zotto, P.; Zumerle, G.; Bellan, R.] Univ Padua, Padua, Italy. [Lazzizzera, I.] Univ Trento, Padua, Italy. [Baesso, P.; Berzano, U.; Riccardi, C.; Torre, P.; Vitulo, R.; Viviani, C.] INFN Sez Pavia, Pavia, Italy. [Baesso, P.; Riccardi, C.; Torre, P.; Vitulo, R.; Viviani, C.] Univ Pavia, I-27100 Pavia, Italy. [Biasini, M.; Bilei, G. M.; Caponeri, B.; Fano, L.; Lariccia, P.; Lucaroni, A.; Mantovani, G.; Menichelli, M.; Nappi, A.; Santocchia, A.; Servoli, L.; Valdata, M.; Volpe, R.] INFN Sez Perugia, Perugia, Italy. [Caponeri, B.; Lariccia, P.; Lucaroni, A.; Mantovani, G.; Nappi, A.; Santocchia, A.; Volpe, R.] Univ Perugia, I-06100 Perugia, Italy. [Azzurria, P.; Bagliesi, G.; Bernardini, J.; Boccali, T.; Castaldi, R.; Dagnolo, R. T.; Dell'Orso, R.; Fiori, F.; Foa, L.; Giassi, A.; Kraan, A.; Ligabue, F.; Lomtadze, T.; Martini, L.; Messineo, A.; Palla, F.; Palmonari, F.; Segneri, G.; Serban, A. T.; Spagnolo, P.; Tenchini, R.; Tonelli, G.; Venturi, A.; Verdini, P. G.] INFN Sez Pisa, Pisa, Italy. [Bernardini, J.; Fiori, F.; Messineo, A.; Tonelli, G.; Boeriu, O.] Univ Pisa, Pisa, Italy. [Azzurria, P.; Foa, L.; Ligabue, F.] Scuola Normale Super Pisa, Pisa, Italy. [Barone, L.; Cavallari, F.; Del Re, D.; Di Marco, E.; Diemoz, M.; Franci, D.; Grassi, M.; Longo, E.; Organtini, G.; Palma, A.; Pandolfi, F.; Paramatti, R.; Rahatlou, S.] INFN Sez Roma, Rome, Italy. [Barone, L.; Del Re, D.; Di Marco, E.; Franci, D.; Longo, E.; Organtini, G.; Palma, A.; Pandolfi, F.; Rahatlou, S.] Univ Roma La Sapienza, Rome, Italy. [Amapane, N.; Arcidiacono, R.; Argiro, S.; Arneodo, M.; Biino, C.; Botta, C.; Cartiglia, N.; Castello, R.; Costa, M.; Demaria, N.; Graziano, A.; Mariotti, C.; Marone, M.; Maselli, S.; Migliore, E.; Mila, G.; Monaco, V.; Musich, M.; Obertino, M. M.; Pastrone, N.; Pelliccioni, M.; Romero, A.; Ruspa, M.; Sacchi, R.; Solano, A.; Staiano, A.; Trocino, D.; Pereira, A. Vilela] INFN Sez Torino, Turin, Italy. [Amapane, N.; Arcidiacono, R.; Argiro, S.; Botta, C.; Castello, R.; Costa, M.; Graziano, A.; Marone, M.; Migliore, E.; Mila, G.; Monaco, V.; Musich, M.; Pelliccioni, M.; Romero, A.; Sacchi, R.; Solano, A.; Trocino, D.; Pereira, A. Vilela] Univ Torino, Turin, Italy. [Arneodo, M.; Obertino, M. M.; Ruspa, M.] Univ Piemonte Orientate Novara, Turin, Italy. [Ambroglini, F.; Belforte, S.; Cossutti, F.; Della Ricca, G.; Gobbo, B.; Montanino, D.; Penzo, A.] INFN Sez Trieste, Trieste, Italy. [Ambroglini, F.; Della Ricca, G.] Univ Trieste, Trieste, Italy. [Chung, J.; Kim, D. H.; Kim, G. N.; Kim, J. E.; Kong, D. J.; Park, H.; Son, D. C.; Chang, P.] Kyungpook Natl Univ, Taegu, South Korea. [Kim, Zero; Kim, J. Y.; Song, S.] Chonnam Natl Univ, Inst Universe & Elementary Particles, Kwangju, South Korea. [Hong, B.; Kim, H.; Kim, J. H.; Kim, T. J.; Lee, K. S.; Moon, D. H.; Park, S. K.; Rhee, H. B.; Sim, K. S.] Korea Univ, Seoul, South Korea. [Kim, H.; Choi, M.; Kang, S.; Park, C.; Park, I. C.; Park, S.] Univ Seoul, Seoul, South Korea. [Choi, S.; Choi, Y.; Choi, Y. K.; Goh, J.; Lee, J.; Lee, S.; Seo, H.; Yu, I.] Sungkyunkwan Univ, Suwon, South Korea. [Janulis, M.; Martisiute, D.; Petrov, P.; Sabonis, T.] Vilnius Univ, Vilnius, Lithuania. [Valdez, H. Castilla; De la Cruz Burelo, E.; Lopez-Fernandez, R.; Hernandez, A. Sanchez; Villasenor-Cendejas, L. M.] Ctr Invest & Estudios Avanzados IPN, Mexico City, DF, Mexico. [Moreno, S. Carrillo] Univ lberoamer, Mexico City, DF, Mexico. [Lbarguen, H. A. Salazar] Benemerita Univ Autonoma Puebla, Puebla, Mexico. [Linares, E. Casimiro; Pineda, A. Morelos; Reyes-Santos, M. A.] Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico. [Allfrey, P.; Krofcheck, D.; Tam, J.] Univ Auckland, Auckland 1, New Zealand. [Butler, P. H.; Signal, T.; Williams, J. C.] Univ Canterbury, Christchurch 1, New Zealand. [Ahmad, M.; Ahmed, I.; Asghar, M. I.; Hoorani, H. R.; Khan, W. A.; Khurshid, T.; Qazi, S.] Quaid I Azam Univ, Natl Ctr Phys, Islamabad, Pakistan. [Cwiok, M.; Dominik, W.; Doroba, K.; Konecki, M.; Krolikowski, J.] Inst Expt Phys, Warsaw, Poland. [Frueboes, T.; Gokieli, R.; Gorski, M.; Kazana, M.; Nawrocki, K.; Szleper, M.; Wrochna, G.; Zalewski, P.] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland. [Almeida, N.; David, A.; Faccioli, P.; Parracho, P. G. Ferreira; Gallinaro, M.; Mini, G.; Musella, P.; Nayak, A.; Raposo, L.; Ribeiro, P. Q.; Seixas, J.; Silva, P.; Soares, D.; Varela, J.; Woehri, H. K.] Lab Instrumentacao Fis Expt Particulas, Lisbon, Portugal. [Altsybeev, I.; Belotelov, I.; Bunin, R.; Finger, M.; Finger, M., Jr.; Golutvin, I.; Kamenev, A.; Karjavin, V.; Kozlov, G.; Laney, A.; Moisenz, P.; Palichik, V.; Perelygin, V.; Shmatov, S.; Smirnov, V.; Volodko, A.; Zarubin, A.] Joint Inst Nucl Res, Dubna, Russia. [Bondar, N.; Golovtsov, V.; Ivanov, Y.; Kim, V.; Levchenko, P.; Smirnov, I.; Sulimov, V.; Uvarov, L.; Vavilov, S.; Vorobyev, A.] Petersburg Nucl Phys Inst, St Petersburg, Russia. [Andreev, Yu.; Gninenko, S.; Golubev, N.; Kirsanov, M.; Krasnikov, N.; Matveev, V.; Pashenkov, A.; Toropin, A.; Troitsky, S.] Inst Nucl Res, Moscow, Russia. [Epshteyn, V.; Gavrilov, V.; Ilina, N.; Kaftanov, V.; Kossov, M.; Krokhotin, A.; Kuleshov, S.; Oulianov, A.; Safronov, G.; Semenov, S.; Shreyber, I.; Stolin, V.; Vlasov, E.; Zhokin, A.] Inst Theoret & Expt Phys, Moscow 117259, Russia. [Boos, E.; Dubinin, M.; Dudko, L.; Ershov, A.; Gribushin, A.; Kodolova, O.; Lokhtin, I.; Obraztsov, S.; Petrushanko, S.; Sarycheva, L.; Savrin, V.; Snigirev, A.] Moscow MV Lomonosov State Univ, Moscow, Russia. [Andreev, V.; Dremin, I.; Kirakosyan, M.; Rusakov, S. V.; Vinogradov, A.] PN Lebedev Phys Inst, Moscow 117924, Russia. [Azhgirey, I.; Bitioukov, S.; Datsko, K.; Grishin, V.; Kachanov, V.; Konstantinov, D.; Krychkine, V.; Petrov, V.; Ryutin, R.; Slabospitsky, S.; Sobol, A.; Sytine, A.; Tourtchanovitch, L.; Troshin, S.; Tyurin, N.; Uzunian, A.; Volkov, A.] State Res Ctr Russian Federat, Inst High Energy Phys, Protvino, Russia. [Adzic, P.; Djordjevic, M.; Krpic, D.; Maletic, D.; Milosevic, J.; Puzovic, J.] Vinca Inst Nucl Sci, Belgrade, Serbia. [Aguilar-Benitez, M.; Maestre, J. Alcaraz; Arce, P.; Battilana, C.; Calvo, E.; Cepeda, M.; Cerrada, M.; Llatas, M. Chamizo; Colino, N.; De La Cruz, B.; Bedoya, C. Fernandez; Ramos, J. P. Fernandez; Ferrando, A.; Flix, J.; Fouz, M. C.; Garcia-Abia, P.; Lopez, O. Gonzalez; Lopez, S. Goy; Hernandez, J. M.; Josa, M. I.; Merino, G.; Pelayo, J. Puerta; Redondo, I.; Romero, L.; Santaolalla, J.; Willmott, C.; Gonzalez, C. Diez] Ctr Invest Energet Medioambient & Tecnol CIEMAT, Madrid, Spain. [Albajar, C.; De Troconiz, J. F.] Univ Autonoma Madrid, Madrid, Spain. [Cuevas, J.; Menendez, J. Fernandez; Caballero, I. Gonzalez; Iglesias, L. Lloret; Garcia, J. M. Vizan] Univ Oviedo, Oviedo, Spain. [Cabrillo, I. J.; Calderon, A.; Chuang, S. H.; Merino, I. Diaz; Gonzalez, C. Diez; Campderros, J. Duarte; Fernandez, M.; Gomez, G.; Sanchez, J. Gonzalez; Suarez, R. Gonzalez; Jorda, C.; Pardo, P. Lobelle; Virto, A. Lopez; Marco, J.; Marco, R.; Rivero, C. Martinez; Ruiz del Arbol, P. Martinez; Matorras, F.; Rodrigo, T.; Jimeno, A. Ruiz; Scodellaro, L.; Sanudo, M. Sobron; Vila, I.; Cortabitarte, R. Vilar] Univ Cantabria, Inst Fis Cantabria IFCA, CSIC, E-39005 Santander, Spain. [Sharma, A.; Abbaneo, D.; Auffray, E.; Baillon, P.; Ball, A. H.; Barney, D.; Beaudette, F.; Bellan, R.; Benedetti, D.; Bernet, C.; Bialas, W.; Bloch, P.; Bocci, A.; Bolognesi, S.; Breuker, H.; Brona, G.; Bunkowski, K.; Camporesi, T.; Cano, E.; Cattai, A.; Cerminara, G.; Christiansen, T.; Perez, J. A. Coarasa; Covarelli, R.; Cure, B.; Dahms, T.; De Roeck, A.; Elliott-Peisert, A.; Funk, W.; Gaddi, A.; Gennai, S.; Gerwig, H.; Gigi, D.; Gill, K.; Giordano, D.; Glege, F.; Garrido, R. Gomez-Reino; Gowdy, S.; Guiducci, L.; Hansen, M.; Hartl, C.; Harvey, J.; Hegner, B.; Henderson, C.; Hesketh, G.; Hoffmann, H. F.; Honma, A.; Innocente, V.; Janot, R.; Lecoq, P.; Leonidopoulos, C.; Lourenco, C.; Macpherson, A.; Maeki, T.; Malgeri, L.; Mannelli, M.; Masetti, L.; Mavromanolakis, G.; Meijers, F.; Mersi, S.; Meschi, E.; Moser, R.; Mozer, M. U.; Mulders, M.; Nesvold, E.; Orsini, L.; Perez, E.; Petrilli, A.; Pfeiffer, A.; Pierini, M.; Pimiae, M.; Racz, A.; Rolandi, G.; Rovelli, C.; Rovere, M.; Sakulin, H.; Schaefer, C.; Schwick, C.; Segoni, I.; Siegrist, P.; Simon, M.; Sphicas, P.; Spiga, D.; Spiropulu, M.; Stoeckli, F.; Traczyk, P.; Tropea, P.; Tsirou, A.; Veres, G. I.; Vichoudis, P.; Voutilainen, M.; Zeuner, W. D.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland. [Bertl, W.; Deiters, K.; Erdmann, W.; Gabathuler, K.; Horisberger, R.; Ingram, Q.; Kaestli, H. C.; Koenig, S.; Kotlinski, D.; Langenegger, U.; Meier, F.; Renker, D.; Rohe, T.; Sibille, J.; Starodumov, A.] Paul Scherrer Inst, Villigen, Switzerland. [Weber, M.; Caminada, L.; Chen, Z.; Cittolin, S.; Dissertori, G.; Dittmar, M.; Eugster, J.; Freudenreich, K.; Grab, C.; Herve, A.; Hintz, W.; Lecomte, P.; Lustermann, W.; Marchica, C.; Meridiani, P.; Milenovic, P.; Moortgat, F.; Nardulli, A.; Nef, P.; Nessi-Tedaldi, F.; Pape, L.; Pauss, F.; Punz, T.; Rizzi, A.; Ronga, F. J.; Sala, L.; Sanchez, A. K.; Sawley, M. -C.; Schinzel, D.; Stieger, B.; Tauscher, L.; Thea, A.; Theofilatos, K.; Treille, D.; Wehrli, L.; Weng, J.] ETH, Inst Particle Phys, Zurich, Switzerland. [Amsler, C.; Chiochia, V.; De Visscher, S.; Rikova, M. Ivova; Mejias, B. Millan; Regenfus, C.; Robmann, P.; Rommerskirchen, T.; Schmidt, A.; Tsirigkas, D.; Wilke, L.] Univ Zurich, Zurich, Switzerland. [Chang, Y. H.; Chen, K. H.; Chen, W. T.; Go, A.; Kuo, C. M.; Li, S. W.; Lin, W.; Liu, M. H.; Lu, Y. J.; Wu, J. H.; Yu, S. S.] Natl Cent Univ, Chungli 32054, Taiwan. [Chang, Y. H.; Bartalini, P.; Chang, P.; Chao, Y.; Chen, K. F.; Hou, W. -S.; Hsiung, Y.; Kao, K. Y.; Lei, Y. J.; Lin, S. W.; Lu, R. -S.; Shiu, J. G.; Tzeng, Y. M.; Ueno, K.; Wang, C. C.; Wang, M.; Wei, J. T.] Natl Taiwan Univ, Taipei 10764, Taiwan. [Adiguzel, A.; Ayhan, A.; Bakirci, M. N.; Cerci, S.; Demir, Z.; Dumanoglu, I.; Eskut, E.; Girgis, S.; Gokbulut, G.; Guler, Y.; Gurpinar, E.; Hos, I.; Kangal, E. E.; Karaman, T.; Topaksu, A. Kayis; Nart, A.; Onengut, G.; Ozdemir, K.; Ozturk, S.; Polatoz, A.; Sahin, O.; Sengul, O.; Sogut, K.; Tali, B.; Topakli, H.; Uzun, D.; Vergili, L. N.; Vergili, M.; Zorbilmez, C.] Cukurova Univ, Adana, Turkey. [Akin, I. V.; Aliev, T.; Bilmis, S.; Deniz, M.; Gamsizkan, H.; Guler, A. M.; Ocalan, K.; Ozpineci, A.; Serin, M.; Sever, R.; Surat, U. E.; Yildirim, E.; Zeyrek, M.] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey. [Deliomeroglu, M.; Demir, D.; Gulmez, E.; Halu, A.; Isildak, B.; Kaya, M.; Kaya, O.; Ozbek, M.; Ozkorucuklu, S.; Sonmez, N.] Bogazici Univ, Dept Phys, Istanbul, Turkey. [Levchuk, L.] Kharkov Phys & Technol Inst, Ctr Nat Sci, UA-310108 Kharkov, Ukraine. [Hansen, M.; Bell, P.; Bostock, F.; Brooke, J. J.; Cheng, T. L.; Cussans, D.; Frazier, R.; Goldstein, J.; Heath, G. P.; Heath, H. F.; Hill, C.; Huckvale, B.; Jackson, J.; Kreczko, L.; Mackay, C. K.; Metson, S.; Newbold, D. M.; Nirunpong, K.; Smith, V. J.; Ward, S.] Univ Bristol, Bristol, Avon, England. [Basso, L.; Bell, K. W.; Belyaev, A.; Brew, C.; Brown, R. M.; Camanzi, B.; Cockerill, D. J. A.; Coughlan, J. A.; Harder, K.; Harper, S.; Kennedy, B. W.; Olaiya, E.; Petyt, D.; Radburn-Smith, B. C.; Shepherd-Themistocleous, C. H.; Tomalin, I. R.; Womersley, W. J.; Worm, S. D.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. [Bainbridge, R.; Ball, G.; Ballin, J.; Beuselinck, R.; Buchmuller, O.; Colling, D.; Cripps, N.; Cutajar, M.; Davies, G.; Della Negra, M.; Foudas, C.; Fulcher, J.; Futyan, D.; Bryer, A. Guneratne; Hall, G.; Hatherell, Z.; Hays, J.; Iles, G.; Karapostoli, G.; Lyons, L.; Magnan, A. -M.; Marrouche, J.; Nandi, R.; Nash, J.; Nikitenko, A.; Papageorgiou, A.; Pesaresi, M.; Petridis, K.; Pioppi, M.; Raymond, D. M.; Rompotis, N.; Rose, A.; Ryan, M. J.; Seez, C.; Sharp, P.; Sparrow, A.; Stoye, M.; Tapper, A.; Tourneur, S.; Acosta, M. Vazquez; Virdee, T.; Wakefield, S.; Wardrope, D.; Whyntie, T.] Univ London, Imperial Coll, London, England. [Barrett, M.; Chadwick, M.; Cole, J. E.; Hobson, P. R.; Khan, A.; Kyberd, P.; Leslie, D.; Reid, I. D.; Teodorescu, L.] Brunel Univ, Uxbridge UB8 3PH, Middx, England. [Bose, T.; Clough, A.; Heister, A.; John, J. St.; Lawson, P.; Lazic, D.; Rohlf, J.; Sulak, L.] Boston Univ, Boston, MA 02215 USA. [Andrea, J.; Avetisyan, A.; Bhattacharya, S.; Chou, J. P.; Cutts, D.; Esen, S.; Heintz, U.; Jabeen, S.; Kukartsev, G.; Landsberg, G.; Narain, M.; Nguyen, D.; Speer, T.; Tsang, K. V.] Brown Univ, Providence, RI 02912 USA. [Borgia, M. A.; Breedon, R.; Sanchez, M. Calderon De la Barca; Cebra, D.; Chertok, M.; Conway, J.; Cox, P. T.; Dolen, J.; Erbacher, R.; Friis, E.; Ko, W.; Kopecky, A.; Lander, R.; Liu, H.; Maruyama, S.; Miceli, T.; Nikolic, M.; Pellett, D.; Robles, J.; Schwarz, T.; Searle, M.; Smith, J.; Squires, M.; Tripathi, M.; Sierra, R. Vasquez; Veelken, C.] Univ Calif Davis, Davis, CA 95616 USA. [Schleper, P.; Andreev, V.; Arisaka, K.; Cline, D.; Cousins, R.; Deisher, A.; Erhan, S.; Farrell, C.; Felcini, M.; Hauser, J.; Ignatenko, M.; Jarvis, C.; Plager, C.; Rakness, G.; Tucker, J.; Valuev, V.; Wallny, R.] Univ Calif Los Angeles, Los Angeles, CA USA. [Liu, H.; Babb, J.; Clare, R.; Ellison, J.; Gary, J. W.; Hanson, G.; Jeng, G. Y.; Kao, S. C.; Liu, F.; Luthra, A.; Nguyen, H.; Pasztor, G.; Satpathy, A.; Shent, B. C.; Stringer, R.; Sturdy, J.; Sumowidagdo, S.; Wilken, R.; Wimpenny, S.] Univ Calif Riverside, Riverside, CA 92521 USA. [Andrews, W.; Branson, J. G.; Dusinberre, E.; Evans, D.; Golf, F.; Holzner, A.; Lebourgeois, M.; Letts, J.; Mangano, B.; Muelmenstaedt, J.; Padhi, S.; Palmer, C.; Petrucciani, G.; Pi, H.; Pieri, M.; Ranieri, R.; Sani, M.; Sharma, V.; Simon, S.; Tu, Y.; Vartak, A.; Yagil, A.; Kelly, T.] Univ Calif San Diego, La Jolla, CA 92093 USA. [Barge, D.; Blume, M.; Campagnari, C.; D'Alfonso, M.; Danielson, T.; Garberson, J.; Incandela, J.; Justus, C.; Kalavase, P.; Koay, S. A.; Kovalskyi, D.; Krutelyov, V.; Lamb, J.; Lowette, S.; Pavlunin, V.; Rebassoo, F.; Ribnik, J.; Richman, J.; Rossin, R.; Stuart, D.; To, W.; Vlimant, J. R.; Witherell, M.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. [Bornheim, A.; Bunn, J.; Gataullin, M.; Kcira, D.; Litvine, V.; Ma, Y.; Newman, H. B.; Rogan, C.; Shin, K.; Timciuc, V.; Veverka, J.; Wilkinson, R.; Yang, Y.; Zhu, R. Y.] CALTECH, Pasadena, CA 91125 USA. [Akgun, B.; Carroll, R.; Ferguson, T.; Jang, D. W.; Jun, S. Y.; Paulini, M.; Russ, J.; Terentyev, N.; Vogel, H.; Vorobiev, I.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Cumalat, J. P.; Dinardo, M. E.; Drell, B. R.; Ford, W. T.; Heyburn, B.; Lopez, E. Luiggi; Nauenberg, U.; Smith, J. G.; Stenson, K.; Ulmer, K. A.; Wagner, S. R.; Zang, S. L.] Univ Colorado Boulder, Boulder, CO USA. [Agostino, L.; Alexander, J.; Blekman, F.; Chatterjee, A.; Das, S.; Eggert, N.; Fields, L. J.; Gibbons, L. K.; Heltsley, B.; Hopkins, W.; Khukhunaishvili, A.; Kreis, B.; Kuznetsov, V.; Kaufman, G. Nicolas; Patterson, J. R.; Puigh, D.; Riley, D.; Ryd, A.; Shi, X.; Sun, W.; Teo, W. D.; Thom, J.; Thompson, J.; Vaughan, J.; Weng, Y.; Wittich, P.] Cornell Univ, Ithaca, NY USA. [Biselli, A.; Cirino, G.; Winn, D.] Fairfield Univ, Fairfield, CT USA. [Banerjee, S.; Abdullin, S.; Albrow, M.; Anderson, J.; Apollinari, G.; Atac, M.; Bakken, J. A.; Bauerdick, L. A. T.; Beretvas, A.; Berryhill, J.; Bhat, P. C.; Bloch, I.; Borcherding, F.; Burkett, K.; Butler, J. N.; Chetluru, V.; Cheung, H. W. K.; Chlebana, F.; Cihangir, S.; Demarteau, M.; Eartly, D. P.; Elvira, V. D.; Fisk, I.; Freeman, J.; Gao, Y.; Gottschalk, E.; Green, D.; Gutsche, O.; Hahn, A.; Hanlon, J.; Harris, R. M.; James, E.; Jensen, H.; Johnson, M.; Joshi, U.; Khatiwada, R.; Kilminster, B.; Klima, B.; Kousouris, K.; Kunori, S.; Kwan, S.; Limon, P.; Lipton, R.; Lykken, J.; Maeshima, K.; Marraffino, J. M.; Mason, D.; McBride, P.; McCauley, T.; Miao, T.; Mishra, K.; Mrenna, S.; Musienko, Y.; Newman-Holmes, C.; O'Dell, V.; Popescu, S.; Pordes, R.; Prokofyev, O.; Saoulidou, N.; Sexton-Kennedy, E.; Sharma, S.; Smith, R. P.; Soha, A.; Spalding, W. J.; Spiegel, L.; Tan, R.; Taylor, L.; Tkaczyk, S.; Uplegger, L.; Vaandering, E. W.; Vidal, R.; Whitmore, J.; Wu, W.; Yumiceva, F.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Acosta, D.; Avery, P.; Bourilkov, D.; Chen, M.; Di Giovanni, G. P.; Dobur, D.; Drozdetskiy, A.; Field, R. D.; Fu, Y.; Furic, I. K.; Gartner, J.; Kim, B.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Kotov, K.; Kropivnitskaya, A.; Kypreos, T.; Matchev, K.; Mitselmakher, G.; Pakhotin, Y.; Gomez, J. Piedra; Prescott, C.; Remington, R.; Schmitt, M.; Scurlock, B.; Sellers, P.; Wang, D.; Yelton, J.; Zakaria, M.] Univ Florida, Gainesville, FL USA. [Ceron, C.; Gaultney, V.; Kramer, L.; Lebolo, L. M.; Linn, S.; Markowitz, P.; Martinez, G.; Mesa, D.; Rodriguez, J. L.] Florida Int Univ, Miami, FL 33199 USA. [Adams, T.; Askew, A.; Chen, J.; Diamond, B.; Gleyzer, S. V.; Haas, J.; Hagopian, S.; Hagopian, V.; Jenkins, M.; Johnson, K. F.; Prosper, H.; Sekmen, S.; Veeraraghavan, V.] Florida State Univ, Tallahassee, FL 32306 USA. [Baarmand, M. M.; Guragain, S.; Hohlmann, M.; Kalakhety, H.; Mermerkaya, H.; Ralich, R.; Vodopiyanov, I.] Florida Inst Technol, Melbourne, FL USA. [Adams, M. R.; Anghel, I. M.; Apanasevich, L.; Bazterra, V. E.; Betts, R. R.; Callner, J.; Cavanaugh, R.; Dragoiu, C.; Garcia-Solis, E. J.; Gerber, C. 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Belgium Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onder-zoek; CNPq; CAPES; FAPERJ; FAPESP; Bulgarian Ministry of Education and Science; CERN; Chinese Academy of Sciences, Ministry of Science and Technology; National Natural Science Foundation of China; COLCIENCIAS; Croatian Ministry of Science, Education and Sport; Research Promotion Foundation, Cyprus; Estonian Academy of Sciences; NICPB; Academy of Finland, Finnish Ministry of Education; Helsinki Institute of Physics; Institut National de Physique Nucleaire et de Physique des Particules/CNRS; Commissariat a l'Energie Atomique, France; Bundesministerium fur Bildung und Forschung; Deutsche Forschungsgemeinschaft; Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany; General Secretariat for Research and Technology, Greece; National Scientific Research Foundation, Hungary; National Office for Research and Technology, Hungary; Department of Atomic Energy; Department of Science and Technology, India; Institute for Studies in Theoretical Physics and Mathematics, Iran; Science Foundation, Ireland; Istituto Nazionale di Fisica Nucleare, Italy; Korean Ministry of Education, Science and Technology; NRF, Korea; Lithuanian Academy of Sciences; CINVESTAV; CONACYT; SEP; UASLP-FAI; Pakistan Atomic Energy Commission; State Commission for Scientific Research, Poland; Fundacao para a Ciencia e a Tecnologia, Portugal; JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); Ministry of Science and Technologies of the Russian Federation; Russian Ministry of Atomic Energy; Ministry of Science and Technological Development of Serbia; Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain; ETH Board; ETH Zurich; PSI; SNF; UniZH; Canton Zurich; SER; National Science Council, Taipei; Scientific and Technical Research Council of Turkey; Turkish Atomic Energy Authority; Science and Technology Facilities Council, UK; US Department of Energy; US National Science Foundation; European Union; Leventis Foundation; A.P. Sloan Foundation; Alexander von Humboldt Foundation; Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy) FX We thank the technical and administrative staff at CERN and other CMS institutes. This work was supported by the Austrian Federal Ministry of Science and Research; the Belgium Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onder-zoek; the Brazilian Funding Agencies (CNPq, CAPES, FAPERJ, and FAPESP); the Bulgarian Ministry of Education and Science; CERN; the Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural Science Foundation of China; the Colombian Funding Agency (COLCIENCIAS); the Croatian Ministry of Science, Education and Sport; the Research Promotion Foundation, Cyprus; the Estonian Academy of Sciences and NICPB; the Academy of Finland, Finnish Ministry of Education, and Helsinki Institute of Physics; the Institut National de Physique Nucleaire et de Physique des Particules/CNRS, and Commissariat a l'Energie Atomique, France; the Bundesministerium fur Bildung und Forschung, Deutsche Forschungsgemeinschaft, and Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany; the General Secretariat for Research and Technology, Greece; the National Scientific Research Foundation, and National Office for Research and Technology, Hungary; the Department of Atomic Energy, and Department of Science and Technology, India; the Institute for Studies in Theoretical Physics and Mathematics, Iran; the Science Foundation, Ireland; the Istituto Nazionale di Fisica Nucleare, Italy; the Korean Ministry of Education, Science and Technology and the world Class University program of NRF, Korea; the Lithuanian Academy of Sciences; the Mexican Funding Agencies (CINVESTAV, CONACYT, SEP, and UASLP-FAI); the Pakistan Atomic Energy Commission; the State Commission for Scientific Research, Poland; the Fundacao para a Ciencia e a Tecnologia, Portugal; JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); the Ministry of Science and Technologies of the Russian Federation, and Russian Ministry of Atomic Energy; the Ministry of Science and Technological Development of Serbia; the Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the National Science Council, Taipei; the Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authority; the Science and Technology Facilities Council, UK; the US Department of Energy, and the US National Science Foundation.; Individuals have received support from the Marie-Curie IEF program (European Union); the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; and the Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy). NR 34 TC 15 Z9 15 U1 2 U2 47 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD AUG 23 PY 2010 VL 692 IS 2 BP 83 EP 104 DI 10.1016/j.physletb.2010.07.033 PG 22 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 653SL UT WOS:000282116900005 ER PT J AU Abdelsayed, V Fan, YY Gardner, T AF Abdelsayed, Victor Fan, Yueying Gardner, Todd TI Catalytic activation of CO2 into useful carbonates products over metallic nanocatalysts supported on metal organic frameworks SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Energy Technol Lab, Morgantown, WV USA. URS Corp, Morgantown, WV USA. 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PD AUG 22 PY 2010 VL 240 MA 49-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704535 ER PT J AU Burns, C AF Burns, Carol TI Nuclear forensics at Los Alamos National Laboratory SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Burns, Carol] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 30-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704519 ER PT J AU Burton-Pye, BP McGregor, D Mbomekalle, IM Lukens, WW Poineau, F Mausolf, E Francesconi, LC AF Burton-Pye, Benjamin P. McGregor, Donna Mbomekalle, Israel M. Lukens, Wayne W., Jr. Poineau, Frederic Mausolf, Ed Francesconi, Lynn C. TI Aqueous chemistry of technetium-99 polyoxometalates: Understanding fundamental chemistry of technetium-99 incorporated into metal oxide matrices SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CUNY Hunter Coll, New York, NY 10021 USA. EO Lawrence Berkeley Natl Lab, Glenn T Seaborg Ctr, Div Chem Sci, Berkeley, CA USA. Inst Lavoisier, Versailles, France. Univ Nevada, Las Vegas, NV 89154 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 730-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704558 ER PT J AU Butcher, DR Salmeron, MB Somorjai, GA AF Butcher, Derek R. Salmeron, Miquel B. Somorjai, Gabor A. TI STM studies of adsorbate-induced surface restructuring of Pt(100) in ethylene adsorption, hydrogenation, and poisoning by CO SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 268-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701743 ER PT J AU Cang, H Zhang, X AF Cang, Hu Zhang, Xiang TI Improving photostability of fluorescence dyes for single molecule spectroscopy by using molecular cavity quantum electrodynamics SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 267-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705801 ER PT J AU Cang, H Zhang, X AF Cang, Hu Zhang, Xiang TI Single molecule super-resolution imaging of surface enhancement hotspot SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Mech Engn, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 168-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703278 ER PT J AU Cappa, CD Wilson, KR Smith, JD Che, DL AF Cappa, Christopher D. Wilson, Kevin R. Smith, Jared D. Che, Daphne L. TI Changing optical properties of organic aerosol SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 634-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706246 ER PT J AU Casas, C Heiser, J AF Casas, Christine Heiser, John TI Effect of outdoor smoking on an indoor environment: A Brookhaven National Laboratory experience SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CUNY Queensborough Community Coll, Dept Chem, Bayside, NY USA. Brookhaven Natl Lab, Environm Res & Technol Div, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 224-CHED PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701242 ER PT J AU Cates, NC Burkhard, GF Gysel, R Beiley, Z Hoke, ET Scully, SR Miller, CE Toney, MF Heeney, M McCulloch, I McGehee, MD AF Cates, Nichole C. Burkhard, George F. Gysel, Roman Beiley, Zach Hoke, Eric T. Scully, Shawn R. Miller, Chad E. Toney, Michael F. Heeney, Martin McCulloch, Iain McGehee, Michael D. TI Improving bulk heterojunction solar cells through controlling their nanostructure SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA. Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA. Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AY, England. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 188-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702862 ER PT J AU Chen, JH Yu, X Hong, K Messman, JM Pickel, DL Xiao, K Sumpter, B Dadmun, MD Mays, JW Kilbey, SM AF Chen, Jihua Yu, Xiang Hong, Kunlun Messman, Jamie M. Pickel, Deanna L. Xiao, Kai Sumpter, Bobby Dadmun, Mark D. Mays, Jimmy W. Kilbey, S. Michael TI Ternary phase behavior of P3HT-b-PEO compatibilized P3HT/PCBM films SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. Univ Tennessee, Knoxville, TN USA. RI Pickel, Deanna/E-4778-2010; Sumpter, Bobby/C-9459-2013; Chen, Jihua/F-1417-2011 OI Sumpter, Bobby/0000-0001-6341-0355; Chen, Jihua/0000-0001-6879-5936 NR 0 TC 0 Z9 0 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 262-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706454 ER PT J AU Chen, JH Alonzo, J Yu, X Hong, KL Messman, JM Ivanov, I Meyer, HM Banerjee, M Rathore, R Mays, JW Kilbey, SM AF Chen, Jihua Alonzo, Jose Yu, Xiang Hong, Kunlun Messman, Jamie M. Ivanov, Ilia Meyer, Harry M. Banerjee, Moloy Rathore, Rajendra Mays, Jimmy W. Kilbey, S. Michael TI Electrical properties and nanomorphology of well-defined conjugated polymer brushes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA. Marquette Univ, Milwaukee, WI 53233 USA. Univ Tennessee, Knoxville, TN USA. RI Chen, Jihua/F-1417-2011; ivanov, ilia/D-3402-2015; Hong, Kunlun/E-9787-2015 OI Chen, Jihua/0000-0001-6879-5936; ivanov, ilia/0000-0002-6726-2502; Hong, Kunlun/0000-0002-2852-5111 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 198-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706390 ER PT J AU Chen, L Tang, HW Shet, S Wang, HL Yan, YF Turner, J Al-Jassim, M AF Chen, Le Tang, Houwen Shet, Sudhakar Wang, Heli Yan, Yanfa Turner, John Al-Jassim, Mowafak TI Synthesis and characterizaton of silver gallium selenide thin film for photoelectrochemical application SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chen, Le; Tang, Houwen; Shet, Sudhakar; Wang, Heli; Yan, Yanfa; Turner, John; Al-Jassim, Mowafak] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 169-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702849 ER PT J AU Chen, LX Lockard, JV Stickrath, AB Zhang, XY Mara, MW Attenkofer, K AF Chen, Lin X. Lockard, Jenny V. Stickrath, Andrew B. Zhang, Xiaoyi Mara, Michael W. Attenkofer, Klaus TI Molecular snapshot in solar energy conversion processes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. Northwestern Univ, Dept Chem, Evanston, IL USA. Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 104-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705648 ER PT J AU Chen, LX Guo, JC Szarko, JM Liang, YY Rolczynski, BS Lee, B Son, HJ Yu, LP AF Chen, Lin X. Guo, Jianchang Szarko, Jodi M. Liang, Yongye Rolczynski, Brian S. Lee, Byeongdu Son, Hae Jung Yu, Luping TI Structure, dynamics and power conversion efficiency correlations in new low bandgap polymer: PCBM solar cells SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. Northwestern Univ, Dept Chem, Evanston, IL USA. Univ Chicago, Dept Chem, Chicago, IL 60637 USA. Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. RI Liang, Yongye/D-9275-2012 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 426-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702002 ER PT J AU Chen, TL Calaza, FC Overbury, SH Mullins, DR AF Chen, Tsung-Liang Calaza, Florencia C. Overbury, Steven H. Mullins, David R. TI Model biomass conversion reactions on oxide surface: Ethylene glycol on CeO2(111) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chen, Tsung-Liang; Calaza, Florencia C.; Overbury, Steven H.; Mullins, David R.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. RI Overbury, Steven/C-5108-2016 OI Overbury, Steven/0000-0002-5137-3961 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 88-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702770 ER PT J AU Chupas, PJ AF Chupas, Peter J. TI Solutions to local structural problems in catalysis SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chupas, Peter J.] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 26-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701004 ER PT J AU Cimatu, KA Meyer, KA Ng, KC Whitten, WB Shaw, RW AF Cimatu, Katherine A. Meyer, Kent A. Ng, Kin C. Whitten, William B. Shaw, Robert W. TI Carbon dioxide and water corrosion of a single ZnO nanowire detected using second harmonic generation microscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. Calif State Univ Fresno, Dept Chem, Fresno, CA 93740 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 199-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701679 ER PT J AU Clark, RA Miller, SD Robertson, JD Schwantes, JM AF Clark, Richard A. Miller, Steve D. Robertson, J. David Schwantes, Jon M. TI Applicability of intrinsic dosimetry to waste management and nuclear forensics SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Missouri, Dept Chem, Columbia, MO 65211 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 8-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704564 ER PT J AU Collins, BA Seok, J Yan, HP McNeill, C Kilcoyne, D Ade, H AF Collins, Brian A. Seok, Jaewook Yan, Hongping McNeill, Chris Kilcoyne, David Ade, Harald TI Miscibility of PCBM in P3HT at the molecular level in polymer solar cells SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA. N Carolina State Univ, Dept Mat Sci, Raleigh, NC 27695 USA. Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. RI Collins, Brian/M-5182-2013; Kilcoyne, David/I-1465-2013 OI Collins, Brian/0000-0003-2047-8418; NR 0 TC 0 Z9 0 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 431-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706068 ER PT J AU Copeland, R Drader, J Elbers, N Llerena, G Friese, J Friese, S AF Copeland, Ronald Drader, Jessica Elbers, Nelson Llerena, Gabriella Friese, Judah Friese, Seth TI Extraction efficiencies of neodymium and europium trivalent ions using derivatives of the tripodal ligand tris(2-hydroxy-3,5-dimethylbenzyl)amine SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Salisbury Univ, Dept Chem, Salisbury, MD USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 543-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703633 ER PT J AU Cournoyer, ME AF Cournoyer, Michael E. TI Lean six sigma tools for a Glovebox Glove Integrity Program SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cournoyer, Michael E.] Los Alamos Natl Lab, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 27-CHAS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701118 ER PT J AU Cross, ES Onasch, TB Ahern, A Wrobel, W Slowik, JG Olfert, J Lack, D Massoli, P Cappa, CD Schwarz, JP Spackman, R Fahey, DW Sedlacek, A Trimborn, A Jayne, JT Freedman, A Williams, L Ng, NL Mazzoleni, C Dubey, M Brem, B Kok, G Subramanian, R Freitag, S Clarke, A Kolb, CE Worsnop, DR Davidovits, P AF Cross, Eben S. Onasch, Timothy B. Ahern, Adam Wrobel, William Slowik, Jay G. Olfert, Jason Lack, Daniel Massoli, Paola Cappa, Christopher D. Schwarz, Joshua P. Spackman, Ryan Fahey, David W. Sedlacek, Arthur Trimborn, Achim Jayne, John T. Freedman, Andrew Williams, Leah Ng, Nga L. Mazzoleni, Claudio Dubey, Manvendra Brem, Benjamin Kok, Greg Subramanian, R. Freitag, Steffen Clarke, Antony Kolb, Charles E. Worsnop, Douglas R. Davidovits, Paul TI Intercomparison study of black carbon measurements SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Boston Coll, Dept Chem, Chestnut Hill, MA 02167 USA. MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA. Aerodyne Res Inc, Ctr Cloud & Aerosol Chem, Billerica, MA 01821 USA. Univ Toronto, Dept Chem, Toronto, ON M5S 1A1, Canada. Brookhaven Natl Lab, Upton, NY 11973 USA. NOAA Earth Syst Res Lab, Div Chem Sci, Boulder, CO USA. Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA. Los Alamos Natl Lab, Los Alamos, NM USA. Univ Illinois, Chicago, IL 60680 USA. Univ Hawaii, Honolulu, HI 96822 USA. Univ Alberta, Edmonton, AB T6G 2M7, Canada. Michigan Technol Univ, Houghton, MI 49931 USA. Univ Colorado, Boulder, CO 80309 USA. RI Mazzoleni, Claudio/E-5615-2011; Lack, Daniel/I-9053-2012; schwarz, joshua/G-4556-2013; Slowik, Jay/F-4894-2011; Dubey, Manvendra/E-3949-2010; Fahey, David/G-4499-2013 OI schwarz, joshua/0000-0002-9123-2223; Slowik, Jay/0000-0001-5682-850X; Dubey, Manvendra/0000-0002-3492-790X; Fahey, David/0000-0003-1720-0634 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 659-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706267 ER PT J AU Crowley, M Bomble, YJ Nimlos, MR Himmel, ME AF Crowley, Michael Bomble, Yannick J. Nimlos, Mark R. Himmel, Michael E. TI Understanding the cellulosome and its assembly with coarse-grain modeling: Toward improving the CBP process SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Chem & Biosci Ctr, Golden, CO USA. Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO USA. RI crowley, michael/A-4852-2013 OI crowley, michael/0000-0001-5163-9398 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 392-COMP PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702390 ER PT J AU Cullen, TD Mezyk, SP Elias, G Mincher, BJ AF Cullen, Thomas D. Mezyk, Stephen P. Elias, Gracy Mincher, Bruce J. TI Nitric acid radiation effects on solvent extraction chemistry SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA. Idaho Natl Lab, Idaho Falls, ID USA. NR 0 TC 0 Z9 0 U1 2 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 133-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704490 ER PT J AU Cummings, PT AF Cummings, Peter T. TI Many-scale and multi-scale modeling in computational nanoscience SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cummings, Peter T.] Vanderbilt Univ, Dept Chem Engn, Nashville, TN 37235 USA. [Cummings, Peter T.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. RI Cummings, Peter/B-8762-2013 OI Cummings, Peter/0000-0002-9766-2216 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 96-COMP PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702484 ER PT J AU Dagle, RA Gerber, MA Su, Y Flake, M King, DL White, JF AF Dagle, Robert A. Gerber, Mark A. Su, Yu Flake, Matthew King, David L. White, James F. TI Noble-metal based catalysts for biomass-derived tar cracking and methane reforming SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Dagle, Robert A.; Gerber, Mark A.; Su, Yu; Flake, Matthew; King, David L.; White, James F.] Pacific NW Natl Lab, Div Energy & Environm, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 90-FUEL PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703110 ER PT J AU Das, S Bwambok, PD El-Zahab, B Monk, JD de Rooy, SL Hung, F Baker, G Warner, IM AF Das, Susmita Bwambok, David P. El-Zahab, Bilal Monk, Joshua D. de Rooy, Sergio L. Hung, Francisco Baker, Gary Warner, Isiah M. TI Tuning the spectral properties of cyanine based near infrared fluorescent nanoparticles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Louisiana State Univ, Baton Rouge, LA 70803 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 420-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701882 ER PT J AU Deskins, NA Rousseau, R Dupuis, M AF Deskins, N. A. Rousseau, Roger Dupuis, Michel TI Nature of excess electrons in TiO2 and their role in surface reactions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Worcester Polytech Inst, Dept Chem Engn, Worcester, MA 01609 USA. Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 91-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701062 ER PT J AU Devarajan, A Windus, TL Gordon, MS AF Devarajan, Ajitha Windus, Theresa L. Gordon, Mark S. TI Implementation of dynamical nucleation theory effective fragment potentials ( DNTEFP) method for modeling aerosol chemistry SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Dept Chem, Ames, IA USA. US DOE, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 83-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706289 ER PT J AU Diyabalanage, HVK Hooker, JM AF Diyabalanage, Himashinie V. K. Hooker, Jacob M. TI HDAC imaging probes for positron emission tomography SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MGH, Dept Radiol, Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA USA. Harvard Univ, Div Nucl Med & Mol Imaging, MGH, Sch Med, Boston, MA USA. Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 115-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704478 ER PT J AU Doeff, MM Conry, T Kam, K Chern, A AF Doeff, Marca M. Conry, Thomas Kam, Kinson Chern, Anthony TI Advanced Li-ion battery cathode materials for vehicle technologies SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Doeff, Marca M.; Conry, Thomas; Kam, Kinson; Chern, Anthony] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Doeff, Marca/G-6722-2013 OI Doeff, Marca/0000-0002-2148-8047 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 355-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703453 ER PT J AU Du, SY Germann, TC AF Du, Shiyu Germann, Timothy C. TI Study on the generation of charges by ice friction under atmospheric conditions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Du, Shiyu; Germann, Timothy C.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 511-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706139 ER PT J AU DuBois, D Boro, B Linehan, J Roberts, J Galan, B Schoffel, J Kubiak, C AF DuBois, Daniel Boro, Brian Linehan, John Roberts, John Galan, Brandon Schoffel, Julia Kubiak, Cliff TI Design of phosphine ligands for electrocatalytic carbon dioxide reduction and formate oxidation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Calif San Diego, San Diego, CA 92103 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 421-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703519 ER PT J AU Dudney, NJ Kim, Y Tenhaeff, W Herbert, E Veith, G AF Dudney, Nancy J. Kim, Yoongu Tenhaeff, Wyatt Herbert, Erik Veith, Gabriel TI Lithium phosphorus oxynitride solid electrolyte: Applications beyond thin film batteries SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Mat Sci & Technol Lab, Oak Ridge, TN USA. Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. RI Dudney, Nancy/I-6361-2016 OI Dudney, Nancy/0000-0001-7729-6178 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 400-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703498 ER PT J AU Dyers, L Gervais, M Kerr, JB AF Dyers, Leon Gervais, Matthieu Kerr, John B. TI Chemical durability studies of imidazoles and their ionic mixtures (with triflic acid) under mimic fuel cell conditions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Dyers, Leon; Gervais, Matthieu; Kerr, John B.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 114-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702798 ER PT J AU Ferrieri, A Best, M Appel, H Schultz, J Ferrieri, RA AF Ferrieri, Abbie Best, Marcel Appel, Heidi Schultz, Jack Ferrieri, Richard A. TI Novel ways to study defense-induced carbon allocation and metabolic partitioning in plants using 2-[F-18]fluoro-2-deoxy-D-glucose SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Missouri, Div Plant Sci, Columbia, MO USA. Johannes Gutenberg Univ Mainz, Fachbereich Chem, Mainz, Germany. Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 38-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704525 ER PT J AU Fingland, BR Dietrich, PJ Ribeiro, FH Guo, N Dumesic, JA Miller, JT AF Fingland, Bradley R. Dietrich, Paul J. Ribeiro, Fabio H. Guo, Neng Dumesic, James A. Miller, Jeffrey T. TI Liquid phase operando X-ray absorption spectroscopy (XAS): Glycerol reforming over a PtMo/C catalyst SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Purdue Univ, W Lafayette, IN 47907 USA. Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. Univ Wisconsin, Madison, WI USA. RI Guo, Neng/A-3223-2013 NR 2 TC 0 Z9 0 U1 0 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 2-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164700888 ER PT J AU Forrey, C Yager, KG AF Forrey, Christopher Yager, Kevin G. TI Molecular dynamics study of block copolymer thin film morphology: Effect of substrate and free surface SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Ctr Devices & Radiol Hlth, Food & Drug Adm, Div Chem & Mat Sci, Silver Spring, MD USA. Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 234-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706426 ER PT J AU Fox, BR Male, JL Tyler, DR AF Fox, Brandy R. Male, Jonathan L. Tyler, David R. TI Enhanced oxidative desulfurization of fuels using a film shear reactor SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Oregon, Dept Chem, Eugene, OR 97403 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 673-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703749 ER PT J AU Fox, EB Visser, AE Bridges, NJ Gray, JR AF Fox, Elise B. Visser, Ann E. Bridges, Nicholas J. Gray, Joshua R. TI Thermal and corrosion properties of nanoparticle enhanced ionic liquids (NEILs) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Fox, Elise B.; Visser, Ann E.; Bridges, Nicholas J.; Gray, Joshua R.] Savannah River Natl Lab, Aiken, SC USA. RI Fox, Elise/G-5438-2013 OI Fox, Elise/0000-0002-4527-5820 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 96-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703116 ER PT J AU Frenkel, AI Hanson, JC AF Frenkel, Anatoly I. Hanson, Jonathan C. TI Solving the structure of nanocatalysts with sub-second time resolution SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Yeshiva Univ, Dept Phys, New York, NY 10033 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 27-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701005 ER PT J AU Fulvio, PF Wang, XQ Mahurin, SM Baker, GA Veith, GM Unocic, RR Dai, S AF Fulvio, Pasquale F. Wang, Xiqing Mahurin, Shannon M. Baker, Gary A. Veith, Gabriel M. Unocic, Raymond R. Dai, Sheng TI General method for the direct exfoliation of inorganic layered structures into atomically-ordered single nanosheets SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Fulvio, Pasquale F.; Wang, Xiqing; Mahurin, Shannon M.; Baker, Gary A.; Veith, Gabriel M.; Unocic, Raymond R.; Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Nanomat Chem Grp, Oak Ridge, TN USA. RI Fulvio, Pasquale/B-2968-2014 OI Fulvio, Pasquale/0000-0001-7580-727X NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 426-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706064 ER PT J AU Gang, O AF Gang, Oleg TI DNA-guided assembly of nanosystems SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Gang, Oleg] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 135-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706334 ER PT J AU Gardner, TH Kugler, E Abdelsayed, V Fan, YY Spivey, J AF Gardner, Todd H. Kugler, Edwin Abdelsayed, Victor Fan, Yueying Spivey, James TI Ni-substituted hexaaluminates as efficient partial oxidation catalysts SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Natl Energy Technol Lab, Morgantown, WV 70803 USA. W Virginia Univ, Dept Chem Engn, Morgantown, WV USA. Louisiana State Univ, Cain Dept Engn, Baton Rouge, LA USA. URS RES, Morgantown, WV USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 89-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703108 ER PT J AU Garrett, BC Kathmann, SM Schenter, GK AF Garrett, Bruce C. Kathmann, Shawn M. Schenter, Gregory K. TI Vapor-to-particle nucleation: A molecular perspective SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Garrett, Bruce C.; Kathmann, Shawn M.; Schenter, Gregory K.] Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA. RI Schenter, Gregory/I-7655-2014 OI Schenter, Gregory/0000-0001-5444-5484 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 84-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706290 ER PT J AU Gaskins, DK Mezyk, SP Martin, LR AF Gaskins, Delora K. Mezyk, Stephen P. Martin, Leigh R. TI Investigation of the radiolytic stability of DTPA under TALSPEAK conditions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA. Idaho Natl Lab, Dept Aqueous Separat & Radiochem, Idaho Falls, ID USA. RI Martin, Leigh/P-3167-2016 OI Martin, Leigh/0000-0001-7241-7110 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 136-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704493 ER PT J AU Geissler, PL Gruenwald, M Widmer-Cooper, A AF Geissler, Phillip L. Gruenwald, Michael Widmer-Cooper, Asaph TI Fluctuations, slow dynamics, and ordering across length and time scales in nanoparticle self-assembly SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UC Berkeley, Dept Chem, Berkeley, CA USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 134-COMP PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702154 ER PT J AU Gellman, AJ Miller, JB Kondratyuk, P Shukla, S Broitman, E AF Gellman, Andrew J. Miller, James B. Kondratyuk, Peter Shukla, Shantanu Broitman, Esteban TI High throughput study of the catalytic activity of CuPd alloys for hydrogen purification membranes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Natl Energy Technol Lab, Pittsburgh, PA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 89-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701059 ER PT J AU Gifford, AN Shea, C Fowler, JS AF Gifford, Andrew N. Shea, Colleen Fowler, Joanna S. TI Solid-phase approach for radioiodination of aromatic biomolecules from organotin precursors SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Gifford, Andrew N.; Shea, Colleen; Fowler, Joanna S.] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 36-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704524 ER PT J AU Goldberg, M AF Goldberg, Margaret TI Nuclear and radiological forensics at Argonne National Laboratory SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Goldberg, Margaret] Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 25-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704513 ER PT J AU Gorman, C Dyers, L Gervais, M Kerr, JB AF Gorman, Christy Dyers, Leon Gervais, Matthieu Kerr, John B. TI Imidazole-based ionic liquids for use in PEMFCs: Proton conductivity studies SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Shasta Coll, Redding, CA USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 93-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703113 ER PT J AU Grass, ME Butcher, D Zeng, ZH Aksoy, F Bluhm, H Mun, BS Somorjai, GA Li, WX Liu, Z AF Grass, Michael E. Butcher, Derek Zeng, Zhenhua Aksoy, Funda Bluhm, Hendrik Mun, Bongjin S. Somorjai, Gabor A. Li, Wei-Xue Liu, Zhi TI Combined ambient pressure XPS, high pressure STM, and DFT study of the in situ oxidation of Pt(110) and the reaction of gas phase CO with two distinct surface oxygen species SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Hanyang Univ, Dept Appl Phys, Ansan, South Korea. Dalian Inst Chem Phys, Dalian, Peoples R China. RI Li, Yimin/F-5817-2012; Mun, Bongjin /G-1701-2013 NR 0 TC 0 Z9 0 U1 1 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 77-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701050 ER PT J AU Grass, ME Karlsson, PG Zhang, CJ El Gabaly, F McDaniel, AH DeCaluwe, SH Aksoy, F Mun, BS Jackson, GS Hussain, Z Bluhm, H McCarty, KF Eichorn, B Liu, Z AF Grass, Michael E. Karlsson, Patrik G. Zhang, Chunjuan El Gabaly, Farid McDaniel, Anthony H. DeCaluwe, Steven H. Aksoy, Funda Mun, Bongjin S. Jackson, Greg S. Hussain, Zahid Bluhm, Hendrik McCarty, Kevin F. Eichorn, Bryan Liu, Zhi TI Ambient pressure XPS for spatial and angular resolution of operational heterogeneous catalysts and electrochemical systems SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. VG Scienta, Uppsala, Sweden. Sandia Natl Labs, Livermore, CA USA. Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA. Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA. Hanyang Univ, Dept Appl Phys, Ansan, South Korea. RI McCarty, Kevin/F-9368-2012; Mun, Bongjin /G-1701-2013 OI McCarty, Kevin/0000-0002-8601-079X; NR 0 TC 0 Z9 0 U1 0 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 6-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701034 ER PT J AU Greife, U Erikson, L Patel, N Wimmer, M Dwiwedi, Y Laurent, M Chipps, K Blackmon, J Kozub, R Bardayan, D Gross, C Stracener, D Smith, M Nesaraya, C Rehm, E Ahmad, I Greene, J AF Greife, U. Erikson, L. Patel, N. Wimmer, M. Dwiwedi, Y. Laurent, M. Chipps, K. Blackmon, J. Kozub, R. Bardayan, D. Gross, C. Stracener, D. Smith, M. Nesaraya, C. Rehm, E. Ahmad, I. Greene, J. TI 7-Be implantation in plastics for prosthesis wear studies SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. Rush Univ, Med Ctr, Sect Tribol, Chicago, IL 60612 USA. Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Tennessee Technol Univ, Dept Phys, Cookeville, TN 38505 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 78-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704562 ER PT J AU Grest, GS Pierce, F Perahia, D AF Grest, Gary S. Pierce, Flint Perahia, Dvora TI Molecular dynamics simulations of responsive semi-fluorinated interfaces SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Clemson Univ, Dept Chem, Clemson, SC 29634 USA. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 323-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706511 ER PT J AU Grills, DC Fujita, E AF Grills, David C. Fujita, Etsuko TI Biphasic ionic liquid-supercritical CO2 solvent systems for the photocatalytic reduction of CO2 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Grills, David C.; Fujita, Etsuko] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RI Fujita, Etsuko/D-8814-2013; Grills, David/F-7196-2016 OI Grills, David/0000-0001-8349-9158 NR 0 TC 0 Z9 0 U1 2 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 644-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706252 ER PT J AU Grubbs, RB AF Grubbs, Robert B. TI Block copolymers as self-assembling building blocks for functional materials SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Grubbs, Robert B.] SUNY Stony Brook, Dept Chem, Stony Brook, NY USA. [Grubbs, Robert B.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 7-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164707095 ER PT J AU Grubbs, RB AF Grubbs, Robert B. TI Functional polymer-based materials through controlled polymerization methods SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Grubbs, Robert B.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. [Grubbs, Robert B.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 206-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706398 ER PT J AU Guo, JC Mahurin, SM Dai, S Brown, GM Shaw, RW AF Guo, Jianchang Mahurin, Shannon M. Dai, Sheng Brown, Gilbert M. Shaw, Robert W. TI Interfacial charge/discharge and ion transport dynamics on nanoporous carbon supercapacitors SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Guo, Jianchang; Mahurin, Shannon M.; Dai, Sheng; Brown, Gilbert M.; Shaw, Robert W.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 560-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706178 ER PT J AU Gutowski, M Ling, SL Haranczyk, M AF Gutowski, Maciej Ling, Sanliang Haranczyk, Maciej TI Modeling of anions of biological molecules SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Heriot Watt Univ, Dept Chem, Edinburgh, Midlothian, Scotland. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Sci Comp Grp, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 99-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706304 ER PT J AU Hagens, L Reca, M Warner, M Kuciauskas, D Caputo, GA AF Hagens, Laura Reca, Michael Warner, Matthew Kuciauskas, Darius Caputo, Gregory A. TI Artificial photosynthetic antennas from the self-assembly of peptide-porphyrin complexes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Rowan Univ, Dept Chem & Biochem, Glassboro, NJ USA. Natl Renewable Energy Lab, Golden, CO USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 424-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706062 ER PT J AU Hampton, S Agarwal, P AF Hampton, Scott Agarwal, Pratul TI Biomolecular simulations in heterogeneous computing architectures SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hampton, Scott; Agarwal, Pratul] Oak Ridge Natl Lab, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 6-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706213 ER PT J AU Hans, S Yeh, MF Hahn, R Hu, LM AF Hans, Sunej Yeh, Minfang Hahn, Richard Hu, Lingming TI Metal-loaded liquid scintillator for neutrino experiment SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Upton, NY 11973 USA. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 637-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703715 ER PT J AU Hanson, SK Baker, RT Gordon, JC Scott, BL Silks, LA Thorn, DL Wu, RL AF Hanson, Susan K. Baker, R. Tom Gordon, John C. Scott, Brian L. Silks, Louis A. Thorn, David L. Wu, Ruilian TI Aerobic alcohol oxidation catalyzed by vanadium(V) complexes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM USA. Los Alamos Natl Lab, Mat Phys Applicat Div, Los Alamos, NM USA. Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. Univ Ottawa, Dept Chem, Ottawa, ON, Canada. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 390-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703488 ER PT J AU Harvey, J Nolan, JA Kroc, T Gomes, I Horwitz, P McAlister, D AF Harvey, James Nolan, Jerry A. Kroc, Thomas Gomes, Itacil Horwitz, P. McAlister, D. TI Alternate method for production of Ac-225 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NorthStar Med Radioisotopes LLC, Madison, WI USA. PG Res Fdn, Darien, IL USA. Argonne Natl Lab, Argonne, IL 60439 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. IC Gomes Consulting, Naperville, IL USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 90-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704572 ER PT J AU Hernandez-Sanchez, BA AF Hernandez-Sanchez, Bernadette A. TI ACS Scholar's Journey: Bernadette Hernandez-Sanchez SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hernandez-Sanchez, Bernadette A.] Sandia Natl Labs, Albuquerque, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 23-PRES PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164707134 ER PT J AU Herring, JS Stoots, C O'Brien, JE AF Herring, J. Stephen Stoots, Carl O'Brien, James E. TI Use of nuclear energy for future transportation fuels SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Herring, J. Stephen; Stoots, Carl; O'Brien, James E.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 149-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702829 ER PT J AU Hill, HH Crawford, CL Fugate, GA Cable-Dunlap, PR Wall, NA AF Hill, Herbert H., Jr. Crawford, Christina L. Fugate, Glenn A. Cable-Dunlap, Paula R. Wall, Nathalie A. TI Novel use of ESI-IM-TOFMS for the analysis of inorganic uranyl compounds SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Washington State Univ, Dept Chem, Pullman, WA 99164 USA. Savannah River Natl Lab, Aiken, SC USA. RI Fugate, Glenn/A-1622-2013; Fugate, Glenn/O-9752-2016 OI Fugate, Glenn/0000-0001-7100-690X NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 50-IEC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703195 ER PT J AU Hobbs, DT Taylor-Pashow, KM Elvington, MC Nyman, MD Clearfield, A Burns, J AF Hobbs, David T. Taylor-Pashow, Kathryn M. Elvington, Mark C. Nyman, May D. Clearfield, Abraham Burns, Jonathan TI Separations using inorganic and hybrid ion-exchange materials SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Savannah River Natl Lab, Aiken, SC USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Texas A&M Univ, College Stn, TX USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 52-IEC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703197 ER PT J AU Holladay, J Karkakamkar, A Neiner, D Bowden, M Heldebrandt, D Linehan, J Ronnebro, E Zheng, CSR Zheng, R Matson, D Birnbaum, J Smurthwaite, T Camaioni, D Autrey, T AF Holladay, Jamie Karkakamkar, Abhi Neiner, Doinita Bowden, Mark Heldebrandt, Dave Linehan, John Ronnebro, Ewa Sorensen, Chris Zheng, Richard Matson, Dean Birnbaum, Jerry Smurthwaite, Tricia Camaioni, Don Autrey, Tom TI Advanced chemical hydrides for hydrogen storage SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Holladay, Jamie; Karkakamkar, Abhi; Neiner, Doinita; Bowden, Mark; Heldebrandt, Dave; Linehan, John; Ronnebro, Ewa; Sorensen, Chris; Zheng, Richard; Matson, Dean; Birnbaum, Jerry; Smurthwaite, Tricia; Camaioni, Don; Autrey, Tom] Pacific NW Natl Lab, Richland, WA 99352 USA. RI Zheng, Feng/C-7678-2009 OI Zheng, Feng/0000-0002-5427-1303 NR 0 TC 1 Z9 1 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 88-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703107 ER PT J AU Hooker, JM AF Hooker, Jacob M. TI New uses of carbon-11 synthons: (CO2)-C-11, (H2CO)-C-11, and (HCN)-C-11 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hooker, Jacob M.] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. [Hooker, Jacob M.] Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA USA. [Hooker, Jacob M.] Harvard Univ, Sch Med, Dept Radiol, Div Nucl Med & Mol Imaging,Massachusetts Gen Hosp, Boston, MA 02115 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 44-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704531 ER PT J AU Hrbek, J AF Hrbek, Jan TI Inverse oxide/metal catalysts: Surface science models for fundamental studies in catalysis SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hrbek, Jan] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 66-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701041 ER PT J AU Hu, LM Rountree, SD Raghavan, R Hans, S Yeh, MF Hahn, RL AF Hu, Liangming Rountree, S. Derek Raghavan, Raju Hans, Sunej Yeh, Minfang Hahn, Richard L. TI Low energy solar neutrino spectrometer (LES) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Virginia Polytech Inst & State Univ, Dept Phys, Blacksburg, VA 24061 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 648-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703724 ER PT J AU Hu, RX Gao, M Dogan, O Howard, B Morreale, B AF Hu, Rongxiang Gao, Michael Dogan, Oemer Howard, Bret Morreale, Bryan TI Acceleration of materials design of hydrogen separation membrane alloys SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Energy Technol Lab, Albany, OR USA. Natl Energy Technol Lab, Pittsburgh, PA USA. URS Corp, San Francisco, CA USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 172-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702566 ER PT J AU Hurst, SJ Fry, HC Gosztola, DJ Rajh, T AF Hurst, Sarah J. Fry, Harry C. Gosztola, David J. Rajh, Tijana TI Nanoparticle based Raman dyes and chemical mechanism of enhancement SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hurst, Sarah J.; Fry, Harry C.; Gosztola, David J.; Rajh, Tijana] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RI Petrosko, Sarah/A-3606-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 184-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705723 ER PT J AU Jackson, NB AF Jackson, Nancy B. TI Arabs, Muslims, and diversity in American science SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Jackson, Nancy B.] Sandia Natl Labs, Int Chem Threat Reduct, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 45-PRES PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164707154 ER PT J AU Jakubikova, E Martin, RL AF Jakubikova, Elena Martin, Richard L. TI Computational study of naphthalocyanine chromophores for infrared solar cells SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA. N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 210-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705750 ER PT J AU Jalees, M Castano, A Payen, F Boursiquot, S Imtiaz, T Lall-Ramnarine, S Thomas, M Wishart, JF AF Jalees, Mariyam Castano, Alejandra Payen, Firmause Boursiquot, Samanta Imtiaz, Tooba Lall-Ramnarine, Sharon Thomas, Marie Wishart, James F. TI Synthesis and characterization of dialkylphosphate ionic liquids SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CUNY, Dept Chem, Queensborough Community Coll, Bayside, NY USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. CUNY, Queens Coll, Dept Chem & Biochem, Flushing, NY USA. Fordham Univ, Dept Nat Sci, New York, NY 10023 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 226-CHED PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701244 ER PT J AU Jarvis, MW Mukarakate, C Pepiot, P Robichaud, DJ Nimlos, MR AF Jarvis, Mark W. Mukarakate, Calvin Pepiot, Perrine Robichaud, David J. Nimlos, Mark R. TI Measurement of tar cracking kinetics in a jet-stirred SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Jarvis, Mark W.; Mukarakate, Calvin; Pepiot, Perrine; Robichaud, David J.; Nimlos, Mark R.] Natl Renewable Energy Lab, Golden, CO USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 48-PETR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705607 ER PT J AU Jeskie, K AF Jeskie, Kim TI Learning not to repeat someone else's mistakes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Jeskie, Kim] Oak Ridge Natl Lab, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 16-CHAS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701107 ER PT J AU Jeskie, K AF Jeskie, Kim TI "They did what?!" Fighting our own human instincts so we can learn from minor laboratory accidents SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Jeskie, Kim] Oak Ridge Natl Lab, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 12-CHAS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701103 ER PT J AU Jiao, D Rempe, S AF Jiao, Dian Rempe, Susan TI Thermodynamic studies of carbon dioxide and carbonic anhydrase with quasichemical theory SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Jiao, Dian; Rempe, Susan] Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 402-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706042 ER PT J AU Jo, JH Magnusson, L Thammannagowda, S Pennington, G Maness, PC AF Jo, Ji Hye Magnusson, Lauren Thammannagowda, Shivegowda Pennington, Grant Maness, Pin-Ching TI Hydrogen production in Clostridium thermocellum via dark fermentation of lignocellulosic biomass SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Jo, Ji Hye; Magnusson, Lauren; Thammannagowda, Shivegowda; Pennington, Grant; Maness, Pin-Ching] Natl Renewable Energy Lab, Biosci Ctr, Golden, CO USA. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 168-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702848 ER PT J AU John, K AF John, Kevin TI Isotope production at the Los Alamos Isotope Production Facility SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [John, Kevin] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 5-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704536 ER PT J AU Johnson, JC Havlas, Z Akdag, A Smith, MB Stepp, BR Michl, J AF Johnson, Justin C. Havlas, Zdenek Akdag, Akin Smith, Millicent B. Stepp, Brian R. Michl, Josef TI Molecules for singlet fission SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Golden, CO USA. Acad Sci Czech Republic, Inst Organ Chem & Biochem, Prague, Czech Republic. Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA. RI Havlas, Zdenek/B-2164-2012; Michl, Josef/G-9376-2014 OI Havlas, Zdenek/0000-0002-8369-7303; NR 0 TC 0 Z9 0 U1 2 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 47-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706100 ER PT J AU Johnstone, EV Poineau, F Czerwinski, KR Sattelberger, A AF Johnstone, Erik V. Poineau, Frederic Czerwinski, Ken R. Sattelberger, Al TI Optimization of the synthesis of binary technetium halides SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Nevada, Dept Radiochem, Las Vegas, NV 89154 USA. Argonne Natl Lab, Chicago, IL USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 56-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704542 ER PT J AU Jurisson, SS Lever, SZ Robertson, JD Ferrieri, R Cutler, C Glass, T Harmata, M Quinn, T Song, LH Cavins, P Sun, R AF Jurisson, Silvia S. Lever, Susan Z. Robertson, J. David Ferrieri, Richard Cutler, Cathy Glass, Timothy Harmata, Michael Quinn, Thomas Song, Lihui Cavins, Patrick Sun, Rui TI Training for the development of novel radiotracers for interrogations of biological systems SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Missouri, Dept Chem, Columbia, MO 65211 USA. Univ Missouri, Dept Biochem, Columbia, MO 65211 USA. Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. Univ Missouri Res Reactor, Columbia, MO USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 45-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704532 ER PT J AU Jurisson, SS Cutler, C Ketring, A Nortier, FM Kitten, J Taylor, W John, K Fassbender, M AF Jurisson, Silvia S. Cutler, Cathy Ketring, Alan Nortier, Francois M. Kitten, Jason Taylor, Wayne John, Kevin Fassbender, Michael TI Development of high specific activity radionuclides SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Missouri, Dept Chem, Columbia, MO 65211 USA. Univ Missouri Res Reactor, Columbia, MO USA. Los Alamos Natl Lab, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 116-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704479 ER PT J AU Kamath, G Agarwal, P AF Kamath, Ganesh Agarwal, Pratul TI Tale of two enzyme folds: Insights into catalysis by R67 and E. coli dihydrofolate reductase SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kamath, Ganesh; Agarwal, Pratul] Oak Ridge Natl Lab, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 36-BIOL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164700671 ER PT J AU Karamalidis, AK Allen, D Goodman, A Hakala, JA AF Karamalidis, Athanasios K. Allen, Douglas Goodman, Angela Hakala, J. Aexandra TI Comparing carbon dioxide solubility models for the suitability for use in carbon sequestration resource estimates SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Energy Technol Lab, Geosci Div, Pittsburgh, PA USA. Salem State Coll, Salem, MA 01970 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 22-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703132 ER PT J AU Keiluweit, M Nico, PS Johnson, MG Kleber, M AF Keiluweit, Marco Nico, Peter S. Johnson, Mark G. Kleber, Markus TI Complexity of aromatic carbon in biomass-derived black carbon (biochar): Implications for molecular structure and sorptive interactions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oregon State Univ, Dept Crop & Soil Sci, Corvallis, OR 97331 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. US EPA, Natl Hlth & Environm Effects Lab, Western Ecol Div, Corvallis, OR USA. RI Nico, Peter/F-6997-2010 OI Nico, Peter/0000-0002-4180-9397 NR 0 TC 0 Z9 0 U1 0 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 166-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702559 ER PT J AU Kersting, A AF Kersting, Annie TI Nuclear forensics at Lawrence Livermore National Laboratory SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kersting, Annie] Lawrence Livermore Natl Lab, Glenn T Seaborg Inst, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 27-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704515 ER PT J AU Kessler, SH Smith, JD Che, DL Wilson, KR Wornsop, DR Kroll, JH AF Kessler, Sean H. Smith, Jared D. Che, Daphne L. Wilson, Kevin R. Wornsop, Douglas R. Kroll, Jesse H. TI Diminished kinetic rates in successive oxidation of organic aerosol species SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MIT, Dept Chem Engn, Cambridge, MA 02139 USA. MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Aerodyne Res Inc, Ctr Aerosol & Cloud Chem, Billerica, MA 01821 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 512-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706140 ER PT J AU Kholod, YA Lamm, MH Windus, TL Gordon, MS AF Kholod, Yana A. Lamm, Monica H. Windus, Theresa L. Gordon, Mark S. TI Computational approach to study lignocellulosic biomass conversion to fuels SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Ames Lab, US DOE, Ames, IA USA. Iowa State Univ, Dept Chem & Biol Engn, Ames, IA USA. Iowa State Univ, Dept Chem, Ames, IA USA. NR 0 TC 0 Z9 0 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 370-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706012 ER PT J AU Kholod, YA Gordon, MS AF Kholod, Yana A. Gordon, Mark S. TI Facilitating sustainable energy solutions with computational tools SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kholod, Yana A.; Gordon, Mark S.] Iowa State Univ, Ames Lab US DoE, Ames, IA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 47-AEI PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164700036 ER PT J AU Kidder, MK Beste, A Buchanan, AC AF Kidder, Michelle K. Beste, Ariana Buchanan, A. C., III TI Experimental and computational investigations of the thermochemical decomposition of aryl ether lignin model compounds SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. Univ Tennessee, Joint Inst Computat Sci, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 293-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704826 ER PT J AU Kilgore, UJ Pool, DH Roberts, JAS Appel, AM DuBois, DL Bullock, RM AF Kilgore, Uriah J. Pool, Douglas H. Roberts, John A. S. Appel, Aaron M. DuBois, Daniel L. Bullock, R. Morris TI Substituent effects in [Ni((P2N2R ')-N-R)(2)](BF4)(2) proton reduction electrocatalysts SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kilgore, Uriah J.; Pool, Douglas H.; Roberts, John A. S.; Appel, Aaron M.; DuBois, Daniel L.; Bullock, R. Morris] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 223-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703332 ER PT J AU Kim, SW Hooker, JM Alexoff, D Otto, N Win, K Volkow, N Fowler, JS AF Kim, Sung Won Hooker, Jacob M. Alexoff, David Otto, Nicola Win, Khaing Volkow, Nora Fowler, Joanna S. TI Synthesis and positron emission tomography studies of three C-11 labeled carboxylic acid drugs, [C-11]butyric acid, [C-11]valporic acid, [C-11]4-phenylbutyric acid SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NIAAA, Lab Neuroimaging, Upton, NY USA. Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 114-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704477 ER PT J AU Klimov, VI AF Klimov, Victor I. TI New aspects of photophysics of semiconductor nanocrystals from the perspective of solar energy conversion SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Klimov, Victor I.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 257-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705791 ER PT J AU Knight, DA Zidan, R Lascola, R Motyka, T Simvasubramanian, P Mohtadi, R AF Knight, Douglas A. Zidan, Ragaiy Lascola, Robert Motyka, Ted Simvasubramanian, Premkumar Mohtadi, Rana TI Novel hydrogen storage materials obtained via the stabilization of aluminum borohydride SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Savannah River Natl Lab, Hydrogen Technol Res Lab, Aiken, SC USA. Toyota Res Inst N Amer, Ann Arbor, MI USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 707-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703777 ER PT J AU Koech, PK Heldebrant, DJ Rainbolt, JE Zheng, F Smurthwaite, T AF Koech, Phillip K. Heldebrant, David J. Rainbolt, James E. Zheng, Feng Smurthwaite, Tricia TI Synthesis, characterization and performance of single-component CO2-binding organic liquids (CO(2)BOLs) for post combustion CO2 capture SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Koech, Phillip K.; Heldebrant, David J.; Rainbolt, James E.; Zheng, Feng; Smurthwaite, Tricia] Pacific NW Natl Lab, Energy & Efficiency Div, Richland, WA 99352 USA. RI Zheng, Feng/C-7678-2009 OI Zheng, Feng/0000-0002-5427-1303 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 1-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702783 ER PT J AU Kostko, O Leone, SR Duncan, MA Ahmed, M AF Kostko, Oleg Leone, Stephen R. Duncan, Michael A. Ahmed, Musahid TI Ionization energies of small silicon clusters: Vacuum ultraviolet photoionization experiment and theoretical calculations SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem & Phys, Berkeley, CA 94720 USA. Univ Georgia, Dept Chem, Athens, GA 30602 USA. RI Kostko, Oleg/B-3822-2009 OI Kostko, Oleg/0000-0003-2068-4991 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 345-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705876 ER PT J AU Kraft, ML Lou, KY Frisz, JF Weber, PK Carpenter, KJ Hanafin, WP Hutcheon, ID AF Kraft, Mary L. Lou, Kaiyan Frisz, Jessica F. Weber, Peter K. Carpenter, Kevin J. Hanafin, William P. Hutcheon, Ian D. TI Chemical imaging of lipid distribution within cell membranes with high-resolution secondary ion mass spectrometry SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Illinois, Dept Chem & Biomol Engr, Urbana, IL 61801 USA. Univ Illinois, Dept Chem, Urbana, IL 61801 USA. Lawrence Livermore Natl Lab, Glenn T Seaborg Inst, Livermore, CA USA. RI Lou, Kaiyan/D-4199-2012 OI Lou, Kaiyan/0000-0003-3443-0343 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 435-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164702010 ER PT J AU Kriz, MR Wang, ZM Nash, KL AF Kriz, Maria R. Wang, Zheming Nash, Kenneth L. TI Calorimetric and time resolved fluorescence spectroscopy of Eu(III) complexation with a-hydroxyisobutyric acid in a mixed 1, 4-dioxane/water media SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Washington State Univ, Dept Chem, Pullman, WA 99164 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 83-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704568 ER PT J AU Kulik, HJ Wong, SE Lau, EY Valdez, C Baker, S Satcher, JH Aines, RD Lightstone, FC AF Kulik, Heather J. Wong, Sergio E. Lau, Edmond Y. Valdez, Carlos Baker, Sarah Satcher, Joseph H. Aines, Roger D. Lightstone, Felice C. TI Computational design of carbonic anhydrase mimics for carbon dioxide capture SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Livermore Natl Lab, Biosci & Biotechnol Div, Livermore, CA USA. Lawrence Livermore Natl Lab, Div Chem Sci, Livermore, CA USA. Lawrence Livermore Natl Lab, Atmospher Earth & Energy Sci Div, Livermore, CA USA. RI Aines, Roger/A-2013-2013 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 393-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706034 ER PT J AU Kulik, HJ Marzari, N AF Kulik, Heather J. Marzari, Nicola TI Accurate binding curves in transition-metal molecules using a DFT plus U(R) approach SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Livermore Natl Lab, Biosci & Biotechnol Div, Livermore, CA USA. Univ Oxford, Dept Mat, Oxford OX1 3PH, England. RI Marzari, Nicola/D-6681-2016 OI Marzari, Nicola/0000-0002-9764-0199 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 135-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705677 ER PT J AU Kwon, WT Kim, SR Lee, YJ Kim, Y Bhave, RR AF Kwon, Woo Teck Kim, Soo Ryong Lee, Yoon Joo Kim, Younghee Bhave, Ramesh R. TI Effect of sintering conditions on micro structure and chemical properties of polyphenylcarbosilane SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Korea Inst Ceram Engn & Technol, Dept Energy & Mat, Seoul, South Korea. Oak Ridge Natl Lab, Dept Mat Sci & Technol, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 158-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703267 ER PT J AU Laskin, J Yang, ZB Lam, C Chu, IK AF Laskin, Julia Yang, Zhibo Lam, Corey Chu, Ivan K. TI Energetics and dynamics of dissociation of peptide radical anions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA. Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China. RI Laskin, Julia/H-9974-2012 OI Laskin, Julia/0000-0002-4533-9644 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 200-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705739 ER PT J AU Lee, J Zhang, Z Deng, XY Sorescu, D Yates, JT Matranga, C AF Lee, Junseok Zhang, Zhen Deng, Xingyi Sorescu, Dan Yates, John T. Matranga, Christopher TI Interaction of oxygen adatom and carbon monoxide on TiO2(110) surface SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Energy Technol Lab, Dept Energy, Pittsburgh, PA USA. URS Corp, Pittsburgh, PA USA. Univ Virginia, Dept Chem, Charlottesville, VA USA. RI Zhang, Zhen/C-6006-2008; Matranga, Christopher/E-4741-2015 OI Zhang, Zhen/0000-0001-6736-1677; Matranga, Christopher/0000-0001-7082-5938 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 67-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164701042 ER PT J AU Lewicki, JP Mayer, BP Pielichowski, K Janowski, B Maxwell, RS AF Lewicki, James P. Mayer, Brian P. Pielichowski, Krzysztof Janowski, Bartlomiej Maxwell, Robert S. TI Synthesis and characterization via solid state NMR of novel POSS-polyurethane nanohybrid elastomers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Livermore Natl Lab, Div Chem Sci, Livermore, CA USA. Cracow Univ, Dept Chem & Technol Polymers, Krakow, Poland. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 269-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706762 ER PT J AU Li, GS Hu, DH Xia, G Zhang, C Kim, DH Peden, CHF AF Li, Guosheng Hu, Dehong Xia, Gordon Zhang, Conrad Kim, Do Heui Peden, Charles H. F. TI Catalysts characterization using operando Raman spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA. KiOR Inc, Pasadena, TX USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 10-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164700879 ER PT J AU Li, YG Yu, X Mays, JW Hong, KL AF Li, Yugang Yu, Xiang Mays, Jimmy W. Hong, Kunlun TI Synthesis and characterization of star-shaped poly(sodium styrenesulfonate) by atom transfer radical polymerization of ethyl styrene sulfonate SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN USA. Univ Tennessee, Knoxville, TN 37996 USA. RI Hong, Kunlun/E-9787-2015 OI Hong, Kunlun/0000-0002-2852-5111 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 440-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164707036 ER PT J AU Lokitz, BS Messman, J Hinestrosa, JP Ankner, JF Kilbey, SM AF Lokitz, Brad S. Messman, Jamie Hinestrosa, Juan Pablo Ankner, John F. Kilbey, S. Michael, II TI Bio-inspired polymer scaffolds from well-defined block copolymers of poly (glycidyl methacrylate) and poly (2-vinyl-4,4-dimethylazlactone) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. Clemson Univ, Dept Chem & Biomol Engn, Clemson, SC USA. Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. RI Lokitz, Bradley/Q-2430-2015 OI Lokitz, Bradley/0000-0002-1229-6078 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 223-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164706719 ER PT J AU Lu, F Zhang, YG van der Lelie, D Gang, O AF Lu, Fang Zhang, Yugang van der Lelie, Daniel Gang, Oleg TI DNA-mediated assembly of nanocubes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Lu, Fang; Zhang, Yugang; van der Lelie, Daniel; Gang, Oleg] Brookhaven Natl Lab, Dept Biol, Ctr Funct Nanomat, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 717-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703786 ER PT J AU Lucas, M Macdonald, BA Wagner, GL Joyce, SA Rector, KD AF Lucas, Marcel Macdonald, Brian A. Wagner, Gregory L. Joyce, Steven A. Rector, Kirk D. TI Ionic liquid pretreatment of poplar wood at room temperature: Swelling and incorporation of nanoparticles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Lucas, Marcel; Macdonald, Brian A.; Wagner, Gregory L.; Joyce, Steven A.; Rector, Kirk D.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM USA. RI Lucas, Marcel/J-9462-2012 NR 0 TC 0 Z9 0 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 41-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164703068 ER PT J AU Luk, YY Wu, L Lal, J Simon, KA Burton, EA AF Luk, Yan Yeung Wu, Lei Lal, Jyotsana Simon, Karen Alambra Burton, Erik A. TI Noncovalent polymer assembly in water and their applications in materials fabrication SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Syracuse Univ, Dept Chem, Syracuse, NY 13244 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RI Wu, Lei/C-6655-2011 OI Wu, Lei/0000-0001-9130-6619 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 818-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164705400 ER PT J AU Luo, HM Bell, JR Boll, RA Depaoli, DW Dai, S AF Luo, Huimin Bell, Jason R. Boll, Rose A. Depaoli, David W. Dai, Sheng TI Ionic liquids as solvents for improved production of radioisotopes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN USA. Oak Ridge Naional Lab, Div Chem Sci, Oak Ridge, TN USA. RI Boll, Rose/C-4138-2016 OI Boll, Rose/0000-0003-2507-4834 NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 22 PY 2010 VL 240 MA 94-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V20UK UT WOS:000208164704575 ER EF