FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Chacko, Z Nomura, Y Tucker-Smith, D AF Chacko, Z Nomura, Y Tucker-Smith, D TI A minimally fine-tuned supersymmetric standard model SO NUCLEAR PHYSICS B LA English DT Article ID LIGHTEST HIGGS BOSON; PARTICLE PHYSICS; GAUGE-MEDIATION; BREAKING; MASS; SUPERGRAVITY; UNIFICATION; SCALE; HIERARCHY; BOUNDS AB We construct supersymmetric theories in which the correct scale for electroweak symmetry breaking is obtained without significant fine-tuning. We calculate the fine-tuning parameter for these theories to be at the 20% level, which is significantly better than in conventional supersymmetry breaking scenarios. Supersymmetry breaking occurs at a low scale of order 100 TeV, and is transmitted to the supersymmetric standard-model sector through standard-model gauge interactions. The Higgs sector contains two Higgs doublets and a singlet field, with a superpotential that takes the most general form allowed by gauge invariance. An explicit model is constructed in 5D warped space with supersymmetry broken on the infrared brane. We perform a detailed analysis of electroweak symmetry breaking for this model, and demonstrate that the fine-tuning is in fact reduced. A new candidate for dark matter is also proposed, which arises from the extended Higgs sector of the model. Finally, we discuss a purely 4D theory which may also significantly reduce fine-tuning. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. Williams Coll, Dept Phys, Williamstown, MA 01267 USA. RP Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. EM ynomura@lbl.gov OI Nomura, Yasunori/0000-0002-1497-1479 NR 87 TC 43 Z9 43 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 EI 1873-1562 J9 NUCL PHYS B JI Nucl. Phys. B PD OCT 3 PY 2005 VL 725 IS 1-2 BP 207 EP 250 DI 10.1016/j.nuclphysb.2005.07.019 PG 44 WC Physics, Particles & Fields SC Physics GA 966JS UT WOS:000232016600009 ER PT J AU Rembiesa, P Stasto, AM AF Rembiesa, P Stasto, AM TI Algebraic models for the hierarchy structure of evolution equations at small x SO NUCLEAR PHYSICS B LA English DT Article ID DEEP-INELASTIC SCATTERING; HIGH-ENERGY; QCD; FLUCTUATIONS; SATURATION; UNITARITY; OPERATOR; POMERON; LIMIT AB We explore several models of QCD evolution equations simplified by considering only the rapidity dependence of dipole scattering amplitudes, while provisionally neglecting their dependence on transverse coordinates. Our main focus is on the equations that include the processes of pomeron splittings. We examine the algebraic structures of the governing equation hierarchies, as well as the asymptotic behavior of their solutions in the large-rapidity limit. (c) 2005 Elsevier B.V. All rights reserved. C1 Dept Phys, Charleston, SC 29409 USA. Brookhaven Natl Lab, Nucl Theory Grp, Upton, NY 11973 USA. PAN, Inst Nucl Phys, Krakow, Poland. RP Rembiesa, P (reprint author), Dept Phys, The Citadel, Charleston, SC 29409 USA. EM stasto@quark.phy.bnl.gov NR 28 TC 15 Z9 15 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD OCT 3 PY 2005 VL 725 IS 1-2 BP 251 EP 264 DI 10.1016/j.nuclphysb.2005.07.030 PG 14 WC Physics, Particles & Fields SC Physics GA 966JS UT WOS:000232016600010 ER PT J AU Small, W Wilson, TS Benett, WJ Loge, JM Maitland, DJ AF Small, W Wilson, TS Benett, WJ Loge, JM Maitland, DJ TI Laser-activated shape memory polymer intravascular thrombectomy device SO OPTICS EXPRESS LA English DT Article ID ACUTE ISCHEMIC-STROKE; TISSUE-PLASMINOGEN ACTIVATOR; PROACT II; THROMBOLYSIS; ARTERY; PROUROKINASE; TRIAL AB A blood clot (thrombus) that becomes lodged in the arterial network supplying the brain can cause an ischemic stroke, depriving the brain of oxygen and often resulting in permanent disability. As an alternative to conventional clot-dissolving drug treatment, we are developing an intravascular laser-activated therapeutic device using shape memory polymer (SMP) to mechanically retrieve the thrombus and restore blood flow to the brain. Thermal imaging and computer simulation were used to characterize the optical and photothermal behavior of the SMP microactuator. Deployment of the SMP device in an in vitro thrombotic vascular occlusion model demonstrated the clinical treatment concept. (c) 2005 Optical Society of America. C1 Lawrence Livermore Natl Lab, Med Phys & Biophys Div, Livermore, CA 94550 USA. Lawrence Livermore Natl Lab, New Technol Engn Div, Livermore, CA 94550 USA. RP Lawrence Livermore Natl Lab, Med Phys & Biophys Div, 7000 E Ave, Livermore, CA 94550 USA. EM small3@llnl.gov NR 24 TC 107 Z9 108 U1 4 U2 39 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 OCT 3 PY 2005 VL 13 IS 20 BP 8204 EP 8213 DI 10.1364/OPEX.13.008204 PG 10 WC Optics SC Optics GA 973TF UT WOS:000232544800052 PM 19498850 ER PT J AU Puckett, AD Peterson, ML AF Puckett, AD Peterson, ML TI Individual longitudinal Pochhammer-Chree modes in observed experimental signals SO ACOUSTICS RESEARCH LETTERS ONLINE-ARLO LA English DT Article ID WAVES AB Plane waves and the Pochhammer-Chree solutions are both used to describe longitudinal axially symmetric wave propagation in solid cylinders. For interpreting experiments, plane waves provide a physical explanation for signals with multiple distinct arrivals. For signals without distinct arrivals the Pochhammer-Chree solutions are often used for interpretation, but the complexity of the solutions makes accurate interpretations difficult. This paper discusses some previous misinterpretations and shows how the Pochhammer-Chree solutions relate to signals with and without distinct arrivals by considering more than just the dispersion curves from the solutions. (C) 2005 Acoustical Society of America. C1 Univ Maine, Dept Mech Engn, Orono, ME 04469 USA. RP Puckett, AD (reprint author), Los Alamos Natl Lab, ESA WR, POB 1663, Los Alamos, NM 87545 USA. EM apuckett@lanl.gov; michael.peterson@maine.edu NR 14 TC 1 Z9 1 U1 0 U2 4 PU ACOUSTICAL SOC AMER AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 1529-7853 J9 ACOUST RES LETT ONL JI Acoust. Res. Lett. Online-ARLO PD OCT PY 2005 VL 6 IS 4 BP 268 EP 273 DI 10.1121/1.2033088 PG 6 WC Acoustics SC Acoustics GA 982DH UT WOS:000233137600007 ER PT J AU Schulze-Gahmen, U Aono, S Chen, SF Yokota, H Kim, R Kim, SH AF Schulze-Gahmen, U Aono, S Chen, SF Yokota, H Kim, R Kim, SH TI Structure of the hypothetical Mycoplasma protein MPN555 suggests a chaperone function SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY LA English DT Article ID TRIGGER FACTOR; MACROMOLECULAR STRUCTURES; ESCHERICHIA-COLI; DATABASE; RIBOSOME; DOMAINS; SURA AB The crystal structure of the hypothetical protein MPN555 from Mycoplasma pneumoniae(gi vertical bar 1673958) has been determined to a resolution of 2.8 angstrom using anomalous diffraction data at the Se-peak wavelength. Structure determination revealed a mostly alpha-helical protein with a three-lobed shape. The three lobes or fingers delineate a central binding groove and additional grooves between lobes 1 and 3 and between lobes 2 and 3. For one of the molecules in the asymmetric unit, the central binding pocket was filled with a peptide from the uncleaved N-terminal affinity tag. The MPN555 structure has structural homology to two bacterial chaperone proteins: SurA and trigger factor from Escherichia coli. The structural data and the homology to other chaperone proteins suggests an involvement in protein folding as a molecular chaperone for MPN555. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Kim, SH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley Struct Genom Ctr, Phys Biophys Div, Berkeley, CA 94720 USA. EM shkim@lbl.gov FU NIGMS NIH HHS [GM 62412] NR 19 TC 10 Z9 11 U1 0 U2 1 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0907-4449 J9 ACTA CRYSTALLOGR D JI Acta Crystallogr. Sect. D-Biol. Crystallogr. PD OCT PY 2005 VL 61 BP 1343 EP 1347 DI 10.1107/S090744490502264X PN 10 PG 5 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography SC Biochemistry & Molecular Biology; Biophysics; Crystallography GA 971AM UT WOS:000232353500004 PM 16204885 ER PT J AU Aishima, J Russel, DS Guibas, LJ Adams, PD Brunger, AT AF Aishima, J Russel, DS Guibas, LJ Adams, PD Brunger, AT TI Automated crystallographic ligand building using the medial axis transform of an electron-density isosurface SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY LA English DT Article ID MAP INTERPRETATION; CRYSTAL-STRUCTURES; STRUCTURAL BASIS; BINDING; SOFTWARE; INHIBITORS; REFINEMENT; CONFORMATIONS; ALGORITHM; MECHANISM AB Automatic fitting methods that build molecules into electron-density maps usually fail below 3.5 angstrom resolution. As a first step towards addressing this problem, an algorithm has been developed using an approximation of the medial axis to simplify an electron-density isosurface. This approximation captures the central axis of the isosurface with a graph which is then matched against a graph of the molecular model. One of the first applications of the medial axis to X-ray crystallography is presented here. When applied to ligand fitting, the method performs at least as well as methods based on selecting peaks in electron-density maps. Generalization of the method to recognition of common features across multiple contour levels could lead to powerful automatic fitting methods that perform well even at low resolution. C1 Dept Cellular & Mol Physiol, Stanford, CA USA. Stanford Univ, Dept Neurol, Stanford, CA 94305 USA. Dept Neurol Sci, Stanford, CA USA. Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. Stanford Univ, Howard Hughes Med Inst, Stanford, CA 94305 USA. Stanford Univ, Dept Comp Sci, Stanford, CA 94305 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Brunger, AT (reprint author), Dept Cellular & Mol Physiol, Stanford, CA USA. EM brunger@stanford.edu RI Adams, Paul/A-1977-2013; OI Adams, Paul/0000-0001-9333-8219; Brunger, Axel/0000-0001-5121-2036 NR 46 TC 10 Z9 11 U1 0 U2 2 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0907-4449 J9 ACTA CRYSTALLOGR D JI Acta Crystallogr. Sect. D-Biol. Crystallogr. PD OCT PY 2005 VL 61 BP 1354 EP 1363 DI 10.1107/S0907444905023152 PN 10 PG 10 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography SC Biochemistry & Molecular Biology; Biophysics; Crystallography GA 971AM UT WOS:000232353500006 PM 16204887 ER PT J AU Bishop, CM Cannon, RM Carter, WC AF Bishop, CM Cannon, RM Carter, WC TI A diffuse interface model of interfaces: Grain boundaries in silicon nitride SO ACTA MATERIALIA LA English DT Article DE grain boundary wetting; thermodynamics; interface transitions; grain boundary structure; ceramics ID PHASE-FIELD MODEL; MOLECULAR-DYNAMICS SIMULATIONS; INTERGRANULAR AMORPHOUS FILMS; POLYCRYSTALLINE CERAMICS; THERMODYNAMIC STABILITY; EQUILIBRIUM THICKNESS; CONTINUUM MODEL; GLASSY FILM; ZINC-OXIDE; CHEMISTRY AB A diffuse-interface model for interfaces in multi-component systems with energetic contributions from chemistry, defects, structure, orientation, electrostatics and gradients is proposed. The energy minimizing profiles of planar grain boundaries in the pseudo-binary SiO2-SiN4/3 system are calculated in the SiN4/3-rich single-phase field. Intergranular films are found to be stable below the eutectic temperature. Evidence of first-order grain boundary order-disorder transitions is found in misorientation and chemical potential space. Interface transitions predicted with the model can be plotted on equilibrium phase diagrams to produce "interfacial phase diagrams." These could be a tool for designing processing routes to optimize bulk, polycrystalline material properties through control of grain boundary characteristics. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 Univ Oxford, Dept Mat, Oxford OX1 3PH, Oxon, England. MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA. Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA USA. RP Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, Oxon, England. EM catherine.bishop@materials.ox.ac.uk RI Carter, W/K-2406-2012; OI Bishop, Catherine/0000-0002-0001-7115 NR 64 TC 22 Z9 23 U1 2 U2 16 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 EI 1873-2453 J9 ACTA MATER JI Acta Mater. PD OCT PY 2005 VL 53 IS 18 BP 4755 EP 4764 DI 10.1016/j.avtamat.2005.07.008 PG 10 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 974BP UT WOS:000232566600002 ER PT J AU Misra, A Hirth, JP Hoagland, RG AF Misra, A Hirth, JP Hoagland, RG TI Length-scale-dependent deformation mechanisms in incoherent metallic multilayered composites SO ACTA MATERIALIA LA English DT Article DE dislocations; nanostructured materials; thin films ID DISLOCATION PILE-UPS; THIN-FILMS; PETCH RELATION; GRAIN-SIZE; STRENGTH; CU; INTERFACES; BEHAVIOR; STRESSES; HARDNESS AB Nano-indentation hardness as a function of bilayer period has been measured for sputter-deposited Cu-Nb multilayers. For this face-centered cubic/body-centered cubic system with incoherent interfaces, we develop dislocation models for the multilayer flow strength as a function of length scale from greater than a micrometer to less than a nanometer. A dislocation pile-up-based Hall-Petch model is found applicable at the sub-micrometer length scales and the Hall-Petch slope is used to estimate the peak strength of the multilayers. At the few to a few tens of nanometers length scales, confined layer slip of single dislocations is treated as the operative mechanism. The effects of dislocation core spreading along the interface, interface stress and interface dislocation arrays on the confined layer slip stress are incorporated in the model to correctly predict the strength increase with decreasing layer thickness. At layer thicknesses of a few nanometers or less, the strength reaches a peak. We postulate that this peak strength is set by the interface resistance to single dislocation transmission, and calculate the transition from confined layer slip to an interface cutting mechanism. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 Los Alamos Natl Lab, Mat Sci & Technol Div, Struct Property Relat Grp, Los Alamos, NM 87545 USA. RP Misra, A (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, Struct Property Relat Grp, MST-8,MS-G755, Los Alamos, NM 87545 USA. EM amisra@lanl.gov RI Hoagland, Richard/G-9821-2012; Misra, Amit/H-1087-2012 NR 44 TC 363 Z9 374 U1 14 U2 190 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD OCT PY 2005 VL 53 IS 18 BP 4817 EP 4824 DI 10.1016/j.actamat.2005.06.025 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 974BP UT WOS:000232566600007 ER PT J AU Bugaev, KA AF Bugaev, KA TI Exact analytical solution of the constrained statistical multifragmentation model SO ACTA PHYSICA POLONICA B LA English DT Article ID PHASE-TRANSITION AB A novel powerful mathematical method is presented, which allows us to find an analytical solution of a simplified version of the statistical multifragmentation model with the restriction that the largest fragment size cannot exceed the finite volume of the system. A complete analysis of the isobaric partition singularities is done for finite system volumes. The finite size effects for large fragments and the role of metastable (unstable) states are discussed. These results allow us, for the first time, to exactly describe the finite volume analog of the bulk nuclear liquid phase and understand completely its contribution to the grand canonical partition. C1 Bogolyubov Inst Theoret Phys, Kiev, Ukraine. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Bugaev, KA (reprint author), Bogolyubov Inst Theoret Phys, Kiev, Ukraine. NR 15 TC 9 Z9 9 U1 0 U2 1 PU ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS PI KRAKOW PA REYMONTA 4, 30-059 KRAKOW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD OCT PY 2005 VL 36 IS 10 BP 3083 EP 3093 PG 11 WC Physics, Multidisciplinary SC Physics GA 976FF UT WOS:000232717500015 ER PT J AU Li, Y Zu, XT Xiao, HY Yang, SZ Liu, KZ Fei, G AF Li, Y Zu, XT Xiao, HY Yang, SZ Liu, KZ Fei, G TI Defect production and formation of helium-vacancy clusters in cascades of alpha-iron with different concentration of helium SO ACTA PHYSICA SINICA LA Chinese DT Article DE Fe; displacement cascade; He-vacancy complex; molecular dynamics ID MOLECULAR-DYNAMICS; DISPLACEMENT CASCADES; MICROSTRUCTURAL EVOLUTION; METALS; IRRADIATION; FE; RADIATION; BEHAVIOR; GROWTH; DAMAGE AB The low-temperature displacement cascades in alpha-Fe with different concentrations of substitutional fie atoms are simulated by molecular dynamics (MD) methods. Primary knock-on atom (PKA) energy, E-p, front 500eV to 5keV is considered for irradiation temperature of 100K. The concentration of He in Fe varies from 1% to 5%. The results are compared with those obtained in pure a-Fe. We find the number of Frenkel pairs (N-F) in Fe with low concentration of He atoms is nearly equal to those in pure Fe, but increases with increasing He concentration. The present study demonstrates for the first time that He-vacancy bubbles can be nucleated directly from displacement cascades, even at low temperature at which the vacancies are not mobile. However, the efficiency of He-vacancy clusters increases with increasing the concentration of lie for lite same energy recoils, and increases with increasing E-P for the same concentration of He, The mechanisms of He bubble nucleation in displacement cascades are discussed in detail. C1 Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China. China W Normal Univ, Sch Phys & Elect Informat, Nanchang 637002, Peoples R China. China Acad Engn Phys, Sichuan Inst Mat & Technol, Mianyang 621900, Peoples R China. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Zu, XT (reprint author), Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China. EM xtzu@uestc.edu.cn RI Xiao, Haiyan/A-1450-2012 NR 19 TC 6 Z9 8 U1 0 U2 3 PU CHINESE PHYSICAL SOC PI BEIJING PA P O BOX 603, BEIJING 100080, PEOPLES R CHINA SN 1000-3290 J9 ACTA PHYS SIN-CH ED JI Acta Phys. Sin. PD OCT PY 2005 VL 54 IS 10 BP 4857 EP 4862 PG 6 WC Physics, Multidisciplinary SC Physics GA 972GU UT WOS:000232443100068 ER PT J AU Tang, J Zhang, T Zoogman, P Fabbri, J Chan, SW Zhu, YM Brus, LE Steigerwald, ML AF Tang, J Zhang, T Zoogman, P Fabbri, J Chan, SW Zhu, YM Brus, LE Steigerwald, ML TI Martensitic phase transformation of isolated HfO2, ZrO2, and HfxZr1-xO2 (0 < x < 1) nanocrystals SO ADVANCED FUNCTIONAL MATERIALS LA English DT Article ID STRUCTURAL TRANSFORMATIONS; ZIRCONIA; CRYSTALLIZATION; POWDERS; SURFACE AB We previously reported that, during the reactions to make nanocrystals of HfO2 and Hf-rich HfxZr1-xO2, a tetragonal-to-monoclinic phase transformation occurs that is accompanied by a shape change of the particles (faceted spherical to nanorods) when the temperature at which the reaction is conducted is changed from 340 to 400 degrees C. We now conclude that this concomitant phase and shape change is a result of the martensitic transformation of isolated nanocrystals in a hot liquid, where twinning plays a crucial role in accommodating the shape-change-induced strain. That such change was not observed during the reactions forming ZrO2 and Zr-rich HfxZr1-xO2 nanocrystals is attributed to the higher driving force needed in those instances compared to that needed for producing HfO2 and Hf-rich HfxZr1-xO2 nanocrystals. We also report here the post-synthesis, heat-induced phase transformation of HfxZr1-xO2 (0 < x < 1) nanocrystals. As temperature increases, all the tetragonal nanocrystals transform to the monoclinic phase accompanied by an increase in particle size (as evidenced by X-ray diffraction and transmission electron microscopy), which confirms that there is a critical size for the phase transformation to occur. When the monoclinic nanorods are heated above a certain temperature the grains grow considerably; under certain conditions a small amount of tetragonal phase appears. C1 Columbia Univ, Mat Res Sci & Engn Ctr, Dept Chem, New York, NY 10027 USA. Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. Columbia Univ, Mat Res Sci & Engn Ctr, Dept Appl Phys & Appl Math, New York, NY 10027 USA. Harvard Univ, Cambridge, MA 02138 USA. Fairfield Univ, Fairfield, CT 06824 USA. RP Tang, J (reprint author), Columbia Univ, Mat Res Sci & Engn Ctr, Dept Chem, New York, NY 10027 USA. EM zhu@bnl.gov; mls2064@columbia.edu OI Zoogman, Peter/0000-0002-8848-4999 NR 21 TC 59 Z9 59 U1 1 U2 16 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1616-301X J9 ADV FUNCT MATER JI Adv. Funct. Mater. PD OCT PY 2005 VL 15 IS 10 BP 1595 EP 1602 DI 10.1002/adfm.200500050 PG 8 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 976VL UT WOS:000232761500005 ER PT J AU Zelenyuk, A Cai, Y Chieffo, L Imre, D AF Zelenyuk, A Cai, Y Chieffo, L Imre, D TI High precision density measurements of single particles: The density of metastable phases SO AEROSOL SCIENCE AND TECHNOLOGY LA English DT Article ID AEROSOL-PARTICLES; RELATIVE-HUMIDITY; AMMONIUM-NITRATE; ATMOSPHERIC PARTICLES; MASS-SPECTROMETER; WATER ACTIVITIES; SIZE; CRYSTALLIZATION; MICROPARTICLES; DELIQUESCENCE AB We describe a system designed to measure the size, composition, and density of individual spherical particles in real time. It uses a Differential Mobility Analyzer (DMA) to select a monodisperse particle population and the single particle mass spectrometer to measure individual particle aerodynamic diameter. Together the mobility and aerodynamic diameters yield particle density. The mass spectrometer aerodynamic sizing resolution Delta d(nu a)/Delta d(nu a) is similar to 50 and > 100 for 200 nm and 800 nm particles respectively and together with the DMA the overall system resolution is 20. We demonstrate that the line shape of the aerodynamic size distribution can be used to identify asphericity. We present results from two operational schemes: one suitable for most applications, yielding particle density with a precision of +/- 2.5%, and a high precision variant, that uses an internal calibrant to remove any of the systematic errors and significantly improves the measurement quality. The high precision scheme is most suitable for laboratory studies, making it possible to follow slight changes in particle density. An application of the system to measure the density of hygroscopic particles in deep metastable phases near zero relative humidity is presented. The density data presented here are consistent with conclusions reached in a number of other studies, namely, that some particle systems, once deliquesced, persist as droplets down to near zero relative humidity. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. Boston Univ, Dept Chem, Boston, MA 02215 USA. Imre Consulting, Richland, WA USA. RP Zelenyuk, A (reprint author), Pacific NW Natl Lab, POB 999,MSIN K8-88, Richland, WA 99354 USA. EM alla.zelenyuk@pnl.gov NR 38 TC 44 Z9 46 U1 0 U2 9 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0278-6826 J9 AEROSOL SCI TECH JI Aerosol Sci. Technol. PD OCT PY 2005 VL 39 IS 10 BP 972 EP 986 DI 10.1080/02786820500380206 PG 15 WC Engineering, Chemical; Engineering, Mechanical; Environmental Sciences; Meteorology & Atmospheric Sciences SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA 992AO UT WOS:000233856400007 ER PT J AU Ghosh, D Ghanem, R Red-Horse, J AF Ghosh, D Ghanem, R Red-Horse, J TI Analysis of eigenvalues and modal interaction of stochastic systems SO AIAA JOURNAL LA English DT Article ID EIGENVECTOR DERIVATIVES; DESIGN SENSITIVITIES; 2ND-ORDER; VIBRATION; CHAOS AB An eigenvalue spectral analysis of stochastic engineering systems is presented. A comparative numerical study between approximations based on Monte Carlo sampling, a Taylor series-based perturbation approach, and the polynomial chaos representation is conducted. It is observed that the polynomial chaos representation gives more accurate estimates of the statistical moments than the perturbation method, especially for the higher modes. The differences of accuracy in the two methods are more pronounced as the system variability increases. Moreover, the chaos expansion gives a more detailed probabilistic description of the eigenvalues and the eigenvectors. In addition, a method for representing the statistical modal overlapping is presented that characterizes the statistical interaction between the various modes. C1 Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ So Calif, Los Angeles, CA 90089 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Ghosh, D (reprint author), Johns Hopkins Univ, Baltimore, MD 21218 USA. EM debrajg@usc.edu; ghanem@usc.edu; jrredho@sandia.gov RI Ghanem, Roger/B-8570-2008 OI Ghanem, Roger/0000-0002-1890-920X NR 20 TC 48 Z9 48 U1 0 U2 12 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0001-1452 J9 AIAA J JI AIAA J. PD OCT PY 2005 VL 43 IS 10 BP 2196 EP 2201 DI 10.2514/1.8786 PG 6 WC Engineering, Aerospace SC Engineering GA 970RZ UT WOS:000232328600015 ER PT J AU Croshaw, DA Scott, DE AF Croshaw, DA Scott, DE TI Experimental evidence that nest attendance benefits female marbled salamanders (Ambystoma opacum) by reducing egg mortality SO AMERICAN MIDLAND NATURALIST LA English DT Article ID MALE PARENTAL CARE; BROODING BEHAVIOR; HEMIDACTYLIUM-SCUTATUM; PLETHODON-CINEREUS; EVOLUTIONARY TRANSITIONS; DESMOGNATHUS-OCHROPHAEUS; REPRODUCTIVE-BEHAVIOR; EMBRYONIC SURVIVAL; NEOTROPICAL FROG; DUSKY SALAMANDER AB To understand the selective pressures that have influenced the evolution and maintenance of parental care, it is necessary to assess the consequences and function (s) of specific behaviors. We used field and laboratory experiments to investigate possible fitness benefits and proximate functions of female nest attendance in marbled salamanders (Ambystoma opacum). In the first field experiment, nests at which females remained until flooding had higher hatching success than those without attendant females, but results were somewhat equivocal. In the second field experiment we used unattended eggs in artificial clutches randomly assigned to one of four treatment groups: eggs physically agitated to possibly reduce developmental malformations and/or fungal growth, eggs protected from predators, eggs moistened by addition of water and eggs in an unmanipulated control group. Clutches that were protected from predators had significantly higher hatching success than control, agitation and supplemental water groups. In the laboratory experiment, nests in which fungal infection was controlled had higher hatching success than those without sterilized substrates. Also, physical agitation and increased moisture did not confer higher hatching success when fungi were eliminated in the laboratory. Predation and fungal infections appear to decrease hatching success in this species, and female nest attendance may reduce these risks. C1 Savannah River Ecol Lab, Aiken, SC 29802 USA. Univ Oklahoma, Dept Zool, Norman, OK 73019 USA. RP Croshaw, DA (reprint author), Savannah River Ecol Lab, Drawer E, Aiken, SC 29802 USA. EM croshaw@srel.edu NR 67 TC 9 Z9 10 U1 1 U2 7 PU AMER MIDLAND NATURALIST PI NOTRE DAME PA UNIV NOTRE DAME, BOX 369, ROOM 295 GLSC, NOTRE DAME, IN 46556 USA SN 0003-0031 J9 AM MIDL NAT JI Am. Midl. Nat. PD OCT PY 2005 VL 154 IS 2 BP 398 EP 411 DI 10.1674/0003-0031(2005)154[0398:EETNAB]2.0.CO;2 PG 14 WC Biodiversity Conservation; Ecology SC Biodiversity & Conservation; Environmental Sciences & Ecology GA 975OD UT WOS:000232670900011 ER PT J AU Martin, CD Chaudhuri, S Grey, CP Parise, JB AF Martin, CD Chaudhuri, S Grey, CP Parise, JB TI Effect of A-site cation radius on ordering of BX6 octahedra in (K,Na)MgF3 perovskite SO AMERICAN MINERALOGIST LA English DT Article ID STRUCTURAL PHASE-TRANSITIONS; CORE-MANTLE BOUNDARY; MGSIO3 PEROVSKITE; NAMGF3 PEROVSKITE; THERMAL-EXPANSION; HIGH-PRESSURES; EARTHS MANTLE; X-RAY; SILICATE PEROVSKITE; POWDER DIFFRACTION AB We present a structural model for (K,Na)MgF3 perovskite using results from high-resolution synchrotron X-ray powder diffraction and nuclear magnetic resonance (NMR) spectroscopy. (K,Na)MgF3 perovskite is found to transition from orthorhombic (Pbnm) to tetragonal (P4/mbm) to cubic (Pm (3) over barm) as potassium concentration is increased. These phase transitions are not accompanied by a discontinuity in pseudo-cubic unit-cell volume and occur close to compositions (K0.37Na0.63)MgF3 and (K0.47Na0.53)MgF3, respectively. F-19 NMR spectra indicate that the Na+ and K+ cations do not occupy the A cation site at random and end-member local environments are favored for all compositions. Based on results from both X-ray diffraction and NMR, we propose that diffuse diffraction is the result of strain between coexisting regions of different octahedra (MgF6) tilts brought about by the ionic radius mismatch of Na+ and K+ cations. We suggest A-site cations group with like cations as neighbors to reduce excess volume and total strain. C1 SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. RP Martin, CD (reprint author), SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA. EM chmartin@ic.sunysb.edu NR 71 TC 18 Z9 20 U1 1 U2 10 PU MINERALOGICAL SOC AMER PI WASHINGTON PA 1015 EIGHTEENTH ST, NW SUITE 601, WASHINGTON, DC 20036 USA SN 0003-004X J9 AM MINERAL JI Am. Miner. PD OCT PY 2005 VL 90 IS 10 BP 1522 EP 1533 DI 10.2138/am.2005.1693 PG 12 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA 973EE UT WOS:000232504900005 ER PT J AU Scovel, C Hush, D Steinwart, I AF Scovel, Clint Hush, Don Steinwart, Ingo TI LEARNING RATES FOR DENSITY LEVEL DETECTION SO ANALYSIS AND APPLICATIONS LA English DT Article DE Anomaly detection; learning theory; rates; density level detection AB In this paper, we address learning rates for the density level detection (DLD) problem. We begin by proving a "No Free Lunch Theorem" showing that rates cannot be obtained in general. Then, we apply a recently established classification framework to obtain rates for DLD support vector machines under mild assumptions on the density. C1 [Scovel, Clint; Hush, Don; Steinwart, Ingo] Los Alamos Natl Lab, CCS 3, Modeling Algorithms & Informat Grp, Los Alamos, NM 87545 USA. RP Scovel, C (reprint author), Los Alamos Natl Lab, CCS 3, Modeling Algorithms & Informat Grp, POB 1663, Los Alamos, NM 87545 USA. EM jcs@lanl.gov; dhush@lanl.gov; ingo@lanl.gov NR 14 TC 3 Z9 3 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0219-5305 EI 1793-6861 J9 ANAL APPL JI Anal. Appl. PD OCT PY 2005 VL 3 IS 4 BP 357 EP 371 DI 10.1142/S0219530505000625 PG 15 WC Mathematics, Applied; Mathematics SC Mathematics GA V24TF UT WOS:000208432000002 ER PT J AU Driskell, JD Kwarta, KM Lipert, RJ Porter, MD Neill, JD Ridpath, JF AF Driskell, JD Kwarta, KM Lipert, RJ Porter, MD Neill, JD Ridpath, JF TI Low-level detection of viral pathogens by a surface-enhanced Raman scattering based immunoassay SO ANALYTICAL CHEMISTRY LA English DT Article ID SCANNING PROBE MICROSCOPY; REVERSE TRANSCRIPTION PCR; SELF-ASSEMBLED MONOLAYERS; ATOMIC-FORCE MICROSCOPY; FELINE CALICIVIRUS; ELECTRON-MICROSCOPY; RAPID DETECTION; COLLOIDAL GOLD; SPECTROSCOPY; VIRUS AB The need for rapid, highly sensitive, and versatile diagnostic tests for viral pathogens spans from human and veterinary medicine to bioterrorism prevention. As an approach to meet these demands, a diagnostic test employing monoclonal antibodies (mAbs) for the selective extraction of viral pathogens from a sample in a chip-scale, sandwich immunoassay format has been developed using surface-enhanced Raman scattering (SERS) as a readout method. The strengths of SERS-based detection include its inherent high sensitivity and facility for multiplexing. The capability of this approach is demonstrated by the capture of feline calicivirus (FCV) from cell culture media that is exposed to a gold substrate modified with a covalently immobilized layer of anti-FCV mAbs. The surface-bound FCVs are subsequently coupled with an extrinsic Raman label (ERL) for identification and quantification. The ERLs consist of 60-nm gold nanoparticles coated first with a layer of Raman reporter molecules and then a layer of mAbs. The Raman reporter molecule is strategically designed to chemisorb as a thiolate adlayer on the gold nanoparticle, to provide a strong and unique spectral signature, and to covalently link a layer of mAbs to the gold nanoparticle. The last feature provides a means to selectively tag substrate-bound FCV. This paper describes the development of the assay, which uses cell culture media as a sample matrix and has a linear dynamic range of 1 x 10(6)-2.5 x 10(8) viruses/mL and a limit of detection of 1 x 10(6) viruses/mL These results reflect the findings from a detailed series of investigations on the effects of several experimental parameters (e.g., salt concentration, ERL binding buffer, and sample agitation), all of which were aimed at minimizing nonspecific binding and maximizing FCV binding efficiency. The performance of the assay is correlated with the number of captured FCV, determined by atomic force microscopy, as a means of method validation. C1 Iowa State Univ, Inst Combinatorial Discovery, Dept Chem, Ames, IA 50011 USA. Iowa State Univ, Dept Chem & Biol Engn, Ames Lab, US DOE, Ames, IA 50011 USA. RP Porter, MD (reprint author), Iowa State Univ, Inst Combinatorial Discovery, Dept Chem, Ames, IA 50011 USA. EM mporter@porter1.ameslab.gov RI Lipert, Robert/A-8571-2009; OI Driskell, Jeremy/0000-0001-5082-898X NR 45 TC 187 Z9 192 U1 15 U2 124 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD OCT 1 PY 2005 VL 77 IS 19 BP 6147 EP 6154 DI 10.1021/ac0504159 PG 8 WC Chemistry, Analytical SC Chemistry GA 972HA UT WOS:000232443700018 PM 16194072 ER PT J AU Tang, KQ Li, FM Shvartsburg, AA Strittmatter, EF Smith, RD AF Tang, KQ Li, FM Shvartsburg, AA Strittmatter, EF Smith, RD TI Two-dimensional gas-phase separations coupled to mass Spectrometry for analysis of complex mixtures SO ANALYTICAL CHEMISTRY LA English DT Article ID ION MOBILITY SPECTROMETRY; PROTEIN IDENTIFICATION TECHNOLOGY; OF-FLIGHT TECHNIQUES; ESI-FAIMS-MS; ELECTROSPRAY-IONIZATION; STRUCTURAL INFORMATION; TRYPTIC PEPTIDES; PEAK-CAPACITY; DRIFT GAS; FIELD AB Ion mobility spectrometry (IMS) has been explored for decades, and its versatility in separation and identification of gas-phase ions is well established. Recently, field asymmetric waveform IMS (FAIMS) has been gaining acceptance in similar applications. Coupled to mass spectrometry (MS), both IMS and FAIMS have shown the potential for broad utility in proteomics and other biological analyses. A major attraction of these separations is extremely high speed, exceeding that of condensed-phase alternatives by orders of magnitude. However, modest separation peak capacities have limited the utility of FAIMS and IMS for analyses of complex mixtures. We report 2-D gas-phase separations that join FAIMS to IMS, in conjunction with high-resolution and accuracy time-of-flight (TOF) MS. Implementation of FAIMS/IMS and IMS/MS interfaces using electrodynamic ion funnels greatly improves sensitivity. Evaluation of FAIMS/IMS/TOF performance for a protein mixture tryptic digest reveals high orthogonality between FAIMS and IMS dimensions and, hence, the benefit of FAIMS filtering prior to IMS/MS. The effective peak capacities in analyses of tryptic peptides are similar to 500 for FMMS/IMS separations and similar to 10(6) for 3-D FAIMS/IMS/MS, providing a potential platform for ultrahigh-throughput analyses of complex mixtures. C1 Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. RP Smith, RD (reprint author), Pacific NW Natl Lab, Div Biol Sci, POB 999, Richland, WA 99352 USA. EM rds@pnl.gov RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 FU NCRR NIH HHS [RR 18522, P41 RR018522] NR 74 TC 79 Z9 80 U1 0 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD OCT 1 PY 2005 VL 77 IS 19 BP 6381 EP 6388 DI 10.1021/ac050871x PG 8 WC Chemistry, Analytical SC Chemistry GA 972HA UT WOS:000232443700049 PM 16194103 ER PT J AU Kim, H Guiochon, G AF Kim, H Guiochon, G TI Adsorption on molecularly imprinted polymers of structural analogues of a template. sing le-component adsorption isotherm data SO ANALYTICAL CHEMISTRY LA English DT Article ID BINDING-SITES; ENERGY-DISTRIBUTIONS; ORGANIC MODIFIER; CROSS-REACTIVITY; SELECTIVITY; CHROMATOGRAPHY; RECOGNITION AB The equilibrium adsorption isotherms on two otherwise identical polymers, one imprinted with Fmoc-L-tryptophan (Fmoc-(L)-Trp) (MIP), the other nonimprinted (NIP), of compounds that are structural analogues of the template were acquired by frontal analysis (FA) in an acetonitrile/ acetic acid (99/1 v/v) mobile phase, over a wide concentration range (from 0.005 to 50 mM). These analogues were Fmoc-L-tyrosine, Fmoc-L-serine, Fmoc-(L)-phenyalanine, Fmoc-glycine (Fmoc-Gly), Finoc-(L)-tryptophan pentafluorophenyl ester (Fmoc-L-Trp(OPfp)), and their antipodes. These substrates have different numbers of functional groups able to interact with the 4-vinylpyridine groups of the polymer. For a given number of the functional groups, these substrates have different hydro-phobicities of their side groups (as indicated by their partition coefficients (log Pow) in the octanol-water system (e.g., from 4.74 for Fmoc-Trp to 2.53 for Fmoc-Gly)). Statistical results from the fitting of the FA data to Langmuirian isotherm models, the calculation of the affinity energy distribution, and the comparison of calculated and experimental band profiles show that all these sets of FA data are best accounted. for by a tri-Langmuir isotherm model, except for the data of Fmoc-L-Trp(0Pfp) that are best modeled by a simple Langmuir isotherm. So, all compounds but Fmoc-L-Trp(0Pfp) find three different types of adsorption sites on both the MIP and the NIP. The properties of these different types of sites were studied systematically. The results show that the affinity of the structural analogues for the NIP is controlled mostly by the number of the functional groups on the substrates and somewhat by the hydrophobicity of their side groups. These two factors control also the MIP affinity toward the enantiomers of the structural analogues that have a stereochemistry different from that of the template. In contrast, the affinity of the highest affinity sites of the MIP toward the enantiomers of these structural analogues that have the same stereochemistry as the template is highest for the imprinted molecule (Fmoc-L-Trp). The separation of the template from the substrates with the same stereochemistry is influenced by the number of the functional groups on the substrates that can interact with the highest affinity sites on the MIP. The separation of the enantiomers of the analogues of the substrates was also achieved on the MIP, and these enantiomeric separations are influenced by the hydrophobicity of the substrates. C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Guiochon, G (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. NR 26 TC 22 Z9 22 U1 0 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD OCT 1 PY 2005 VL 77 IS 19 BP 6415 EP 6425 DI 10.1021/ac050914+ PG 11 WC Chemistry, Analytical SC Chemistry GA 972HA UT WOS:000232443700054 PM 16194108 ER PT J AU Tobias, HJ Schafer, MP Pitesky, M Fergenson, DP Horn, J Frank, M Gard, EE AF Tobias, HJ Schafer, MP Pitesky, M Fergenson, DP Horn, J Frank, M Gard, EE TI Bioaerosol mass spectrometry for rapid detection of individual airborne Mycobacterium tuberculosis H37Ra particles SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID ASSISTED-LASER-DESORPTION/IONIZATION; MYCOLIC ACIDS; AEROSOL-PARTICLES; CHEMICAL-ANALYSIS; BACTERIA; CLASSIFICATION; IONIZATION; DIAGNOSIS; SURVIVAL; IDENTIFICATION AB Single-particle laser desorption/ionization time-of-flight mass spectrometry, in the form of bioaerosol mass spectrometry (BAMS), was evaluated as a rapid detector for individual airborne, micron-sized, Mycobacterium tuberculosis H37Ra particles, comprised of a single cell or a small number of clumped cells. The BAMS mass spectral signatures for aerosolized M. tuberculosis H37Ra particles were found to be distinct from M. smegmatis, Bacillus atrophaeus, and B. cereus particles, using a distinct biomarker. This is the first time a potentially unique biomarker was measured in M. tuberculosis H37Ra on a single-cell level. In addition, M. tuberculosis H37Ra and M. smegmatis were aerosolized into a bioaerosol chamber and were sampled and analyzed using BAMS, an aerodynamic particle sizer, a viable Anderson six-stage sampler, and filter cassette samplers that permitted direct counts of cells. In a background-free environment, BAMS was able to sample and detect M. tuberculosis H37Ra at airborne concentrations of > 1 M. tuberculosis H37Ra-containing particles/liter of air in 20 min as determined by direct counts of filter cassette-sampled particles, and concentrations of > 40 M. tuberculosis H37Ra CFU/Iiter of air in 1 min as determined by using viable Andersen six-stage samplers. This is a first step toward the development of a rapid, stand-alone airborne M. tuberculosis particle detector for the direct detection of M. tuberculosis bioaerosols generated by an infectious patient. Additional instrumental development is currently under way to make BAMS useful in realistic environmental and respiratory particle backgrounds expected in tuberculosis diagnostic scenarios. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NIOSH, Cincinnati, OH 45226 USA. RP Gard, EE (reprint author), Lawrence Livermore Natl Lab, L-452,7000 East Ave, Livermore, CA 94550 USA. EM gard2@llnl.gov RI Frank, Matthias/O-9055-2014 NR 49 TC 43 Z9 45 U1 0 U2 25 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD OCT PY 2005 VL 71 IS 10 BP 6086 EP 6095 DI 10.1128/AEM.71.10.6086-6095.2005 PG 10 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA 973DV UT WOS:000232504000052 PM 16204525 ER PT J AU Vrionis, HA Anderson, RT Ortiz-Bernad, I O'Neill, KR Resch, CT Peacock, AD Dayvault, R White, DC Long, PE Lovley, DR AF Vrionis, HA Anderson, RT Ortiz-Bernad, I O'Neill, KR Resch, CT Peacock, AD Dayvault, R White, DC Long, PE Lovley, DR TI Microbiological and geochemical heterogeneity in an in situ uranium bioremediation field site SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID CONTAMINATED AQUIFER; FERRIC IRON; SUBSURFACE SEDIMENT; SULFATE REDUCTION; BACTERIA; GROUNDWATER; DIVERSITY; SOILS; COMMUNITIES; SAMPLER AB The geochemistry and microbiology of a uranium-contaminated subsurface environment that had undergone two seasons of acetate addition to stimulate microbial U(VI) reduction was examined. There were distinct horizontal and vertical geochemical gradients that could be attributed in large part to the manner in which acetate was distributed in the aquifer, with more reduction of Fe(111) and sulfate occurring at greater depths and closer to the point of acetate injection. Clone libraries of 16S rRNA genes derived from sediments and groundwater indicated an enrichment of sulfate-reducing bacteria in the order Desulfobacterales in sediment and groundwater samples. These samples were collected nearest the injection gallery where microbially reducible Fe(III) oxides were highly depleted, groundwater sulfate concentrations were low, and increases in acid volatile sulfide were observed in the sediment. Further down-gradient, metal-reducing conditions were present as indicated by intermediate Fe(II)/Fe (total) ratios, lower acid volatile sulfide values, and increased abundance of 16S rRNA gene sequences belonging to the dissimilatory Fe(III)- and U(VI)-reducing family Geobacteraceae. Maximal Fe(III) and U(VI) reduction correlated with maximal recovery of Geobacteraceae 16S rRNA gene sequences in both groundwater and sediment; however, the sites at which these maxima occurred were spatially separated within the aquifer. The substantial microbial and geochemical heterogeneity at this site demonstrates that attempts should be made to deliver acetate in a more uniform manner and that closely spaced sampling intervals, horizontally and vertically, in both sediment and groundwater are necessary in order to obtain a more in-depth understanding of microbial processes and the relative contribution of attached and planktonic populations to in situ uranium bioremediation. C1 Univ Massachusetts, Dept Microbiol, Morill Sci IVN, Amherst, MA 01003 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. SM Stoller Corp, Lafayette, CO 80026 USA. Univ Tennessee, Ctr Biomarker Anal, Knoxville, TN 37932 USA. RP Vrionis, HA (reprint author), Univ Massachusetts, Dept Microbiol, Morill Sci IVN, Amherst, MA 01003 USA. EM vrionis@microbio.umass.edu RI Long, Philip/F-5728-2013 OI Long, Philip/0000-0003-4152-5682 NR 41 TC 162 Z9 163 U1 3 U2 42 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD OCT PY 2005 VL 71 IS 10 BP 6308 EP 6318 DI 10.1128/AEM.71.10.6308-6318.2005 PG 11 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA 973DV UT WOS:000232504000079 PM 16204552 ER PT J AU Scates, DM Hartwell, JK AF Scates, DM Hartwell, JK TI A comparison of the high count-rate performance of three commercially available digital signal processors SO APPLIED RADIATION AND ISOTOPES LA English DT Article DE digital signal processor; DSP; gamma-ray spectroscopy AB Three commercial gamma-ray digital signal processors, a Canberra InSpector 2000, an ORTEC DigiDART, and an X-ray Instrumentation Associates Polaris system, coupled to a Canberra 2002C resistive-feedback preamplifier-equipped high-purity germanium detector, were performance tested to input rates of 440 kHz. The spectrometers were evaluated on their throughput, stability and peak shape performance. The accuracy of their quantitative corrections for dead time and pile-up were also tested. All three of the tested units performed well at input rates that strain most analog spectroscopy systems. (c) 2005 Elsevier Ltd. All rights reserved. C1 Idaho Natl Engn Lab, Idaho Falls, ID 83415 USA. RP Scates, DM (reprint author), Idaho Natl Engn Lab, POB 1625,MS-2114,IF638 2253 N Blvd, Idaho Falls, ID 83415 USA. EM dawn.scates@inl.gov NR 11 TC 11 Z9 11 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD OCT PY 2005 VL 63 IS 4 BP 465 EP 473 DI 10.1016/j.apradiso.2005.05.052 PG 9 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA 967OK UT WOS:000232100500007 PM 16039134 ER PT J AU Choi, JH Koshland, CP Sawyer, RF Lucas, D AF Choi, JH Koshland, CP Sawyer, RF Lucas, D TI Measurement of polystyrene nanospheres using excimer laser fragmentation fluorescence spectroscopy SO APPLIED SPECTROSCOPY LA English DT Article DE nanosphere; nanoparticle; photofragmentation; fluorescence; disintegration; breakdown; plasma; excimer laser fragmentation fluorescence spectroscopy; ELFFS ID INDUCED BREAKDOWN SPECTROSCOPY; INDUCED AIR BREAKDOWN; GAS-BREAKDOWN; PARTICLES; AEROSOLS; PHOTOFRAGMENTATION; RADIATION; ABLATION; PHOTOABLATION; NANOPARTICLES AB Monodisperse polystyrene nanospheres with a mean diameter of 102 um are photofragmented with 193 am light in N-2 at laser fluences from 1 to 20 J/cm(2). Carbon atom fluorescence at 248 nm from the disintegration of the particles is used as a signature of the polystyrene. The normalized fluorescence signals are self-similar with an exponential decay lifetime of similar to 10 ns. At fluences above 17 J/cm(2), optical breakdown occurs and a strong continuum emission is generated that lasts significantly longer. A non-dimensional parameter, the photon-to-atom ratio (PAR), is used to interpret the laser-particle interaction energetics. Carbon fluorescence from polystyrene particles is compared with that from soot, and a similarity between the two particles is observed when normalized with PAR. Carbon emission from bulk polystyrene was also measured. Similar emission signals were observed, but the breakdown threshold of the surface is significantly lower at 0.2 J/cm(2). C1 Univ Calif Berkeley, Mech Engn Dept, Berkeley, CA 94720 USA. Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Choi, JH (reprint author), Univ Calif Berkeley, Mech Engn Dept, Berkeley, CA 94720 USA. EM jhyunc@me.berkeley.edu RI Sawyer, Robert/B-5013-2014 FU NIEHS NIH HHS [P42ESO47050-01] NR 35 TC 4 Z9 4 U1 0 U2 4 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA 201B BROADWAY ST, FREDERICK, MD 21701 USA SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD OCT PY 2005 VL 59 IS 10 BP 1203 EP 1208 DI 10.1366/000370205774430936 PG 6 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA 974XX UT WOS:000232625800003 PM 16274531 ER PT J AU Dokken, KM Davis, LC Marinkovic, NS AF Dokken, KM Davis, LC Marinkovic, NS TI Use of infrared microspectroscopy in plant growth and development SO APPLIED SPECTROSCOPY REVIEWS LA English DT Review DE FTIR microspectroscopy; synchrotron radiation; plant cell wall; lignin; cellulose; chemical imaging; principal components analysis ID ATTENUATED TOTAL-REFLECTION; FT-IR SPECTROSCOPY; CELL-WALL MUTANTS; CELLULOSE CRYSTALLINE-STRUCTURE; IMAGING MOLECULAR CHEMISTRY; IN-SITU; PECTIC POLYSACCHARIDES; SYNCHROTRON-RADIATION; ORIENTED STRUCTURE; NATIVE CELLULOSES AB Infrared microspectroscopy (IMS) has emerged as a key technique for the study of plant growth and development. The combination of IMS and synchrotron radiation has enabled researchers to analyze plant development at a cellular level. The spatial distribution of functional groups in plant tissue can be determined by the "chemical imaging" ability of IMS. Attenuated total reflectance (ATR) and polarized IR spectroscopies in combination with IMS makes sampling rapid and easy, providing direct analysis in situ. This review covers applications of IMS to study cell wall architecture and the major cell wall components: lignin, cellulose, and polysaccharides; applications for agricultural and feed products; and changes to plant structure due to biotic and abiotic stressors. C1 Kansas State Univ, Dept Biochem, Manhattan, KS 66506 USA. Brookhaven Natl Lab, Albert Einstein Ctr Synchroton Biosci, U2B, Natl Synchrotron Light Source Dept, Upton, NY 11973 USA. RP Kansas State Univ, Dept Biochem, 103 Willard Hall, Manhattan, KS 66506 USA. EM ldavis@ksu.edu RI Marinkovic, Nebojsa/A-1137-2016 OI Marinkovic, Nebojsa/0000-0003-3579-3453 NR 111 TC 38 Z9 39 U1 2 U2 19 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0570-4928 EI 1520-569X J9 APPL SPECTROSC REV JI Appl. Spectrosc. Rev. PD OCT-DEC PY 2005 VL 40 IS 4 BP 301 EP 326 DI 10.1080/05704920500230898 PG 26 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA 977CQ UT WOS:000232780400002 ER PT J AU Lubliner, M Andrews, J Baylon, D AF Lubliner, M Andrews, J Baylon, D TI Heating with residential heat pumps SO ASHRAE JOURNAL LA English DT Article C1 Washington State Univ, Energy Program, Olympia, WA USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Ecotope, Seattle, WA USA. RP Lubliner, M (reprint author), Washington State Univ, Energy Program, Olympia, WA USA. NR 16 TC 1 Z9 1 U1 0 U2 1 PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC, PI ATLANTA PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA SN 0001-2491 J9 ASHRAE J JI ASHRAE J. PD OCT PY 2005 VL 47 IS 10 BP 36 EP + PG 7 WC Thermodynamics; Construction & Building Technology; Engineering, Mechanical SC Thermodynamics; Construction & Building Technology; Engineering GA 972EV UT WOS:000232437900011 ER PT J AU Liebel, B Brodrick, J AF Liebel, B Brodrick, J TI Lighting and standard 90.1 SO ASHRAE JOURNAL LA English DT Article C1 After Image & Space, Emeryville, CA USA. US DOE, Bldg Technol Program, Washington, DC USA. RP Liebel, B (reprint author), After Image & Space, Emeryville, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC, PI ATLANTA PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA SN 0001-2491 J9 ASHRAE J JI ASHRAE J. PD OCT PY 2005 VL 47 IS 10 BP 61 EP 62 PG 2 WC Thermodynamics; Construction & Building Technology; Engineering, Mechanical SC Thermodynamics; Construction & Building Technology; Engineering GA 972EV UT WOS:000232437900015 ER PT J AU McGehee, PM West, AA Smith, JA Anderson, KSJ Brinkmann, J AF McGehee, PM West, AA Smith, JA Anderson, KSJ Brinkmann, J TI Photometric accretion signatures near the substellar boundary SO ASTRONOMICAL JOURNAL LA English DT Article DE circumstellar matter; stars : formation; stars : late-type; stars : low-mass, brown dwarfs; stars : pre-main-sequence ID DIGITAL SKY SURVEY; LOW-MASS STARS; T-TAURI STARS; YOUNG BROWN DWARFS; ORION NEBULA CLUSTER; DISK ACCRETION; DATA RELEASE; MOLECULAR CLOUDS; VARIABILITY; OBJECTS AB Multiepoch imaging of the Orion equatorial region by the Sloan Digital Sky Survey has revealed that significant variability in the blue continuum persists into the late-M spectral types, indicating that magnetospheric accretion processes occur below the substellar boundary in the Orion OB1 association. We investigate the strength of the accretion-related continuum veiling by comparing the reddening-invariant colors of the most highly variable stars against those of main-sequence M dwarfs and evolutionary models. A gradual decrease in the g-band veiling is seen for the cooler and less massive members, as expected for a declining accretion rate with decreasing mass. We also see evidence that the temperature of the accretion shock decreases in the very low mass regime, reflecting a reduction in the energy flux carried by the accretion columns. We find that the near-IR excess attributed to circumstellar disk thermal emission drops rapidly for spectral types later than M4. This is likely due to the decrease in color contrast between the disk and the cooler stellar photosphere. Since accretion, which requires a substantial stellar magnetic field and the presence of a circumstellar disk, is inferred for masses down to 0.05 M-circle dot, we surmise that brown dwarfs and low-mass stars share a common mode of formation. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. New Mexico State Univ, Dept Astron, Las Cruces, NM 88003 USA. Univ Washington, Dept Astron, Seattle, WA 98195 USA. Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA. Apache Point Observ, Sunspot, NM 88349 USA. RP McGehee, PM (reprint author), Los Alamos Natl Lab, LANSCE-8,MS H820, Los Alamos, NM 87545 USA. EM peregrin@apo.nmsu.edu RI Brinkmann, Jonathan/H-2779-2014; West, Andrew/H-3717-2014 OI Brinkmann, Jonathan/0000-0001-6128-659X; NR 73 TC 5 Z9 5 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-6256 J9 ASTRON J JI Astron. J. PD OCT PY 2005 VL 130 IS 4 BP 1752 EP 1762 DI 10.1086/444473 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 969XW UT WOS:000232270200030 ER PT J AU Holz, DE Linder, EV AF Holz, DE Linder, EV TI Safety in numbers: Gravitational lensing degradation of the luminosity distance-redshift relation SO ASTROPHYSICAL JOURNAL LA English DT Article DE cosmological parameters; cosmology : observations; cosmology : theory; gravitation; gravitational lensing; supernovae : general ID HUBBLE-SPACE-TELESCOPE; COSMOLOGICAL PARAMETERS; LIGHT-PROPAGATION; IA SUPERNOVAE; DARK-MATTER; UNIVERSES; STATISTICS; CONSTRAINTS; DECELERATION; CONSTANT AB Observation of the expansion history of the universe allows exploration of the physical properties and energy density of the universe's various constituents. Standardizable candles such as Type Ia supernovae remain one of the most promising and robust tools in this endeavor by allowing for a direct measure of the luminosity distance-redshift curve and thereby producing detailed studies of the dark energy responsible for the universe's currently accelerating expansion. As such observations are pushed to higher redshifts, the observed flux is increasingly affected by gravitational lensing magnification due to intervening structure along the line of sight. We simulate and analyze the non-Gaussian probability distribution function of deamplification and amplification due to lensing of standard candles, quantify the effect of a convolution over many independent sources ( which acts to restore the intrinsic average [unlensed] luminosity due to flux conservation), and compute the additional uncertainty due to lensing on derived cosmological parameters. We find that, in the case of large numbers of sources, the lensing distribution along any particular line of sight can be approximated by a Gaussian with standard deviation given by sigma(eff) = 0.088z as a function of redshift z. The resulting "degradation factor'' due to lensing is a factor of 3 reduction in the effective number of usable supernovae at z = 1.5 ( for sources with intrinsic flux dispersion of 10%). C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. RP Holz, DE (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM deholz@cfcp.uchicago.edu; evlinder@lbl.gov NR 40 TC 99 Z9 99 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD OCT 1 PY 2005 VL 631 IS 2 BP 678 EP 688 DI 10.1086/432085 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 971EU UT WOS:000232365300002 ER PT J AU Popowski, P Griest, K Thomas, CL Cook, KH Bennett, DP Becker, AC Alves, DR Minniti, D Drake, AJ Alcock, C Allsman, RA Axelrod, TS Freeman, KC Geha, M Lehner, MJ Marshall, SL Nelson, CA Peterson, BA Quinn, PJ Stubbs, CW Sutherland, W Vandehei, T Welch, D AF Popowski, P Griest, K Thomas, CL Cook, KH Bennett, DP Becker, AC Alves, DR Minniti, D Drake, AJ Alcock, C Allsman, RA Axelrod, TS Freeman, KC Geha, M Lehner, MJ Marshall, SL Nelson, CA Peterson, BA Quinn, PJ Stubbs, CW Sutherland, W Vandehei, T Welch, D CA MACHO Collaboration TI Microlensing optical depth toward the galactic bulge using clump giants from the macho survey SO ASTROPHYSICAL JOURNAL LA English DT Article DE Galaxy : center; Galaxy : stellar content; Galaxy : structure; gravitational lensing; surveys ID GRAVITATIONAL LENSING EXPERIMENT; DIFFERENCE IMAGE-ANALYSIS; EXTINCTION MAP; BAADES WINDOW; ZERO-POINT; PROJECT; EVENTS; PHOTOMETRY; BAR; DISCOVERY AB Using 7 yr of MACHO survey data, we present a new determination of the optical depth to microlensing toward the Galactic bulge. We select the sample of 62 microlensing events ( 60 unique) on clump giant sources and perform a detailed efficiency analysis. We use only the clump giant sources because these are bright bulge stars and are not as strongly affected by blending as other events. Using a subsample of 42 clump events concentrated in an area of 4.5 deg(2) with 739,000 clump giant stars, we find tau 2.17(-0.38)(+0.47) x 10(-6) at (l, b) (1.degrees 50; -2.degrees 68), somewhat smaller than found in most previous MACHO studies but in excellent agreement with recent theoretical predictions. We also present the optical depth in each of the 19 fields in which we detected events and find limits on optical depth for fields with no events. The errors in optical depth in individual fields are dominated by Poisson noise. We measure optical depth gradients of (1.06 +/- 0.71)x 10(-6) deg(-1) and (0.29 +/- 0.43)x 10(-6) deg(-1) in the Galactic latitude b and longitude l directions, respectively. Finally, we discuss the possibility of anomalous duration distribution of events in the field 104 centered on (l; b) (3 degrees.11, -3 degrees.01), as well as investigate spatial clustering of events in all fields. C1 Max Planck Inst Astrophys, D-85741 Garching, Germany. Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Notre Dame, Dept Phys, South Bend, IN 46556 USA. Univ Washington, Dept Astron, Seattle, WA 98195 USA. Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20781 USA. Pontificia Univ Catolica Chile, Dept Astron, Santiago 22, Chile. Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. Natl Opt Astron Observ, Tucson, AZ 85719 USA. Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. Res Sch Astron & Astrophys, Weston, ACT 2611, Australia. Carnegie Observ, Pasadena, CA 91101 USA. Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA. Stanford Linear Accelerator Ctr, Kavli Inst Particle Astrophys & Cosmol, Menlo Pk, CA 94025 USA. European So Observ, D-85748 Garching, Germany. Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England. McMaster Univ, Hamilton, ON L8S 4M1, Canada. RP Popowski, P (reprint author), Max Planck Inst Astrophys, Karl Schwarzschild Str 1,Postfach 1317, D-85741 Garching, Germany. EM popowski@mpa-garching.mpg.de; griest@astrophys.ucsd.edu; clt@ucsd.edu; kcook@igpp.ucllnl.org; bennett@emu.phys.nd.edu; becker@astro.washington.edu; alves@lasp680.gsfc.nasa.gov; dante@astro.puc.cl; ajd@astro.puc.cl; calcock@cfa.harvard.edu; robyn@noao.edu; cnelson@igpp.ucllnl.org; cstubbs@cfa.harvard.edu; vandehei@astrophys.ucsd.edu RI Stubbs, Christopher/C-2829-2012; Quinn, Peter/B-3638-2013; OI Stubbs, Christopher/0000-0003-0347-1724; Lehner, Matthew/0000-0003-4077-0985 NR 47 TC 72 Z9 74 U1 0 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD OCT 1 PY 2005 VL 631 IS 2 BP 879 EP 905 DI 10.1086/432246 PN 1 PG 27 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 971EU UT WOS:000232365300019 ER PT J AU Thomas, CL Griest, K Popowski, P Cook, KH Drake, AJ Minniti, D Myer, DG Alcock, C Allsman, RA Alves, DR Axelrod, TS Becker, AC Bennett, DP Freeman, KC Geha, M Lehner, MJ Marshall, SL Nelson, CA Peterson, BA Quinn, PJ Stubbs, CW Sutherland, W Vandehei, T Welch, DL AF Thomas, CL Griest, K Popowski, P Cook, KH Drake, AJ Minniti, D Myer, DG Alcock, C Allsman, RA Alves, DR Axelrod, TS Becker, AC Bennett, DP Freeman, KC Geha, M Lehner, MJ Marshall, SL Nelson, CA Peterson, BA Quinn, PJ Stubbs, CW Sutherland, W Vandehei, T Welch, DL CA MACHO Collaboration TI Galactic bulge microlensing events from the MACHO collaboration SO ASTROPHYSICAL JOURNAL LA English DT Article DE catalogs; Galaxy : bulge; Galaxy : structure; gravitational lensing; stars : dwarf novae; stars : variables : other ID GRAVITATIONAL LENSING EXPERIMENT; DIFFERENCE IMAGE-ANALYSIS; LARGE-MAGELLANIC-CLOUD; SAGITTARIUS DWARF GALAXY; OPTICAL DEPTH; MILKY-WAY; DARK MATTER; PROJECT; PHOTOMETRY; HALO AB We present a catalog of 450 relatively high signal-to-noise ratio microlensing events observed by the MACHO collaboration between 1993 and 1999. The events are distributed throughout our fields, and as expected, they show a clear concentration toward the Galactic center. No optical depth is given for this sample, since no blending efficiency calculation has been performed and we find evidence for substantial blending. In a companion paper we give optical depths for the subsample of events on clump giant source stars, where blending is a less significant effect. Several events with sources that may belong to the Sagittarius dwarf galaxy are identified. For these events even relatively low dispersion spectra could suffice to classify these events as either consistent with Sagittarius membership or as non-Sagittarius sources. Several unusual events, such as microlensing of periodic variable source stars, binary lens events, and an event showing extended source effects, are identified. We also identify a number of contaminating background events as cataclysmic variable stars. C1 Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. Max Planck Inst Astrophys, D-85741 Garching, Germany. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Pontificia Univ Catolica Chile, Dept Astron, Santiago 22, Chile. Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. Natl Opt Astron Observ, Tucson, AZ 85719 USA. Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20781 USA. Steward Observ, Tucson, AZ 85721 USA. Univ Washington, Dept Astron, Seattle, WA 98195 USA. Univ Notre Dame, Dept Phys, South Bend, IN 46556 USA. Res Sch Astron & Astrophys, Weston, ACT 2611, Australia. Carnegie Observ, Pasadena, CA 91101 USA. Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA. Stanford Linear Accelerator Ctr, Kavli Inst Particle Astrophys & Cosmol, Menlo Pk, CA 94025 USA. European So Observ, D-85748 Garching, Germany. Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England. McMaster Univ, Hamilton, ON L8S 4M1, Canada. RP Thomas, CL (reprint author), Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. EM clt@ucsd.edu; kgriest@ucsd.edu; popowski@mpa-garching.mpg.de; kcook@igpp.ucllnl.org; ajd@astro.puc.cl; dante@astro.puc.cl; dmyer@ucsd.edu; calcock@cfa.harvard.edu; robyn@noao.edu; alves@astro.columbia.edu; taxelrod@as.arizona.edu; becker@astro.washington.edu; cnelson@igpp.ucllnl.org; cstubbs@cfa.harvard.edu; vandehei@astrophys.ucsd.edu RI Myer, David/E-1425-2011; Stubbs, Christopher/C-2829-2012; Quinn, Peter/B-3638-2013; OI Myer, David/0000-0001-8599-3694; Stubbs, Christopher/0000-0003-0347-1724; Lehner, Matthew/0000-0003-4077-0985 NR 56 TC 18 Z9 18 U1 0 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD OCT 1 PY 2005 VL 631 IS 2 BP 906 EP 934 DI 10.1086/432247 PN 1 PG 29 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 971EU UT WOS:000232365300020 ER PT J AU Rykoff, ES Aharonian, F Akerlof, CW Alatalo, K Ashley, MCB Guver, T Horns, D Kehoe, RL Kiziloglu, U McKay, TA Ozel, M Phillips, A Quimby, RM Schaefer, BE Smith, DA Swan, HF Vestrand, WT Wheeler, JC Wren, J Yost, SA AF Rykoff, ES Aharonian, F Akerlof, CW Alatalo, K Ashley, MCB Guver, T Horns, D Kehoe, RL Kiziloglu, U McKay, TA Ozel, M Phillips, A Quimby, RM Schaefer, BE Smith, DA Swan, HF Vestrand, WT Wheeler, JC Wren, J Yost, SA TI A search for untriggered GRB afterglows with ROTSE-III SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies : active; gamma rays : bursts; novae, cataclysmic variables ID GAMMA-RAY BURSTS; EARLY OPTICAL-EMISSION; GRB-021211; TRANSIENT; SKY AB We present the results of a search for untriggered gamma-ray burst (GRB) afterglows with the Robotic Optical Transient Search Experiment-III (ROTSE- III) telescope array. This search covers observations from 2003 September to 2005 March. We have an effective coverage of 1.74 deg(2) yr for rapidly fading transients that remain brighter than similar to 17.5 mag for more than 30 minutes. This search is the first large-area survey to be able to detect typical untriggered GRB afterglows. Our background rate is very low and purely astrophysical. We have found four previously unknown cataclysmic variables (CVs) and one new flare star. We have not detected any candidate afterglow events or other unidentified transients. We can place an upper limit on the rate of fading optical transients with quiescent counterparts dimmer than similar to 20th magnitude at a rate of less than 1.9 deg(-2) yr(-1) with 95% confidence. This places limits on the optical characteristics of off-axis (orphan) GRB afterglows. As a by-product of this search, we have an effective similar to 52 deg(2) yr of coverage for very slowly decaying transients, such as CVs. This implies an overall rate of outbursts from high Galactic latitude CVs of 0.1 deg(-2) yr(-1). C1 Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. Max Planck Inst Kernphys, D-69117 Heidelberg, Germany. Univ New S Wales, Sch Phys, Dept Astrophys & Opt, Sydney, NSW 2052, Australia. Istanbul Univ, Fac Sci, Dept Astron & Space Sci, TR-34119 Istanbul, Turkey. So Methodist Univ, Dept Phys, Dallas, TX 75275 USA. Middle E Tech Univ, Dept Phys, Ankara 06531, Turkey. Canakkale Onsekiz Mart Univ, Dept Phys, TR-17020 Canakkale, Turkey. Univ Texas, Dept Astron, Austin, TX 78712 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Rykoff, ES (reprint author), Univ Michigan, Dept Phys, 2477 Randall Lab,450 Church St, Ann Arbor, MI 48109 USA. EM erykoff@umich.edu; felix.aharonian@mpi-hd.mpg.de; akerlof@umich.edu; kalatalo@umich.edu; mcba@phys.unsw.edu.au; tolga@istanbul.edu.tr; horns@mpi-hd.mpg.de; kehoe@physics.smu.edu; umk@astroa.physics.metu.edu.tr; tamckay@umich.edu; me_ozel@ibu.edu.tr; a.phillips@unsw.edu.au; quimby@astro.as.utexas.edu; schaefer@lsu.edu; donaldas@umich.edu; hswan@umich.edu; vestrand@lanl.gov; wheel@astro.as.utexas.edu; jwren@nis.lanl.gov; sayost@umich.edu RI Guver, Tolga/C-1408-2011; Horns, Dieter/C-9727-2011; McKay, Timothy/C-1501-2009; Guver, Tolga/B-1039-2014; OI McKay, Timothy/0000-0001-9036-6150; Guver, Tolga/0000-0002-3531-9842; Alatalo, Katherine/0000-0002-4261-2326; Flewelling, Heather/0000-0002-1050-4056 NR 35 TC 32 Z9 32 U1 0 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD OCT 1 PY 2005 VL 631 IS 2 BP 1032 EP 1038 DI 10.1086/432832 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 971EU UT WOS:000232365300029 ER PT J AU Hesse, M Forbes, TG Birn, J AF Hesse, M Forbes, TG Birn, J TI On the relation between reconnected magnetic flux and parallel electric fields in the solar corona SO ASTROPHYSICAL JOURNAL LA English DT Article DE MHD; sun : corona; sun : magnetic fields ID MASS EJECTIONS; CURRENT SHEETS; CONNECTIVITY; MAGNETOTAIL; EVOLUTION; REGION; MOTION; FLARES; LOOPS AB Analytical theory and kinematic models are applied to magnetic reconnection in the solar corona. The emphasis of the present investigation is on the relation between the reconnection electric field, the reconnection rate, and the change in magnetic connectivity among photospheric magnetic footpoints. The results are not tied to the presence or absence of specific topological features of the magnetic field, such as a separatrix layer or separators. It is shown that the critical element in determining the location of ribbon-like bright features on the solar surface may be the parallel electric field, integrated along magnetic field lines. A general relation between the change of the reconnected magnetic flux and the integrated parallel electric field is derived. The results of this analysis are applied to the solar coronal case by means of two kinematic models, one of which affords a fully analytical treatment. The results show that reconnection-induced changes of magnetic connectivity on the corona-photosphere interface are directly related to the maximum value of the field line-integrated parallel electric field. C1 NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. Univ New Hampshire, Durham, NH 03824 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hesse, M (reprint author), NASA, Goddard Space Flight Ctr, Code 696, Greenbelt, MD 20771 USA. EM michael.hesse@nasa.gov; terry.forbes@unh.edu; jbirn@lanl.gov RI Hesse, Michael/D-2031-2012; NASA MMS, Science Team/J-5393-2013 OI NASA MMS, Science Team/0000-0002-9504-5214 NR 39 TC 43 Z9 43 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD OCT 1 PY 2005 VL 631 IS 2 BP 1227 EP 1238 DI 10.1086/432677 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 971EU UT WOS:000232365300046 ER PT J AU Rykoff, ES Yost, SA Krimm, HA Aharonian, F Akerlof, CW Alatalo, K Ashley, MCB Barthelmy, SD Gehrels, N Gogus, E Guver, T Horns, D Kiziloglu, U McKay, TA Ozel, M Phillips, A Quimby, RM Rujopakarn, W Schaefer, BE Smith, DA Swan, HF Vestrand, WT Wheeler, JC Wren, J AF Rykoff, ES Yost, SA Krimm, HA Aharonian, F Akerlof, CW Alatalo, K Ashley, MCB Barthelmy, SD Gehrels, N Gogus, E Guver, T Horns, D Kiziloglu, U McKay, TA Ozel, M Phillips, A Quimby, RM Rujopakarn, W Schaefer, BE Smith, DA Swan, HF Vestrand, WT Wheeler, JC Wren, J TI Prompt optical detection of GRB 050401 with ROTSE-IIIa SO ASTROPHYSICAL JOURNAL LA English DT Article DE gamma rays : bursts ID GAMMA-RAY BURST; EMISSION; AFTERGLOWS AB The ROTSE-IIIa telescope at Siding Spring Observatory, Australia, detected prompt optical emission from Swift GRB 050401. We present observations of the early optical afterglow, first detected by the ROTSE-IIIa telescope 33 s after the start of gamma-ray emission, contemporaneous with the brightest peak of this emission. This GRB was neither exceptionally long nor bright. This is the first prompt optical detection of a GRB of typical duration and luminosity. We find that the early afterglow decay does not deviate significantly from the power-law decay observable at later times and is uncorrelated with the prompt gamma-ray emission. We compare this detection with the other two GRBs with prompt observations, GRB 990123 and GRB 041219a. All three bursts exhibit quite different behavior at early times. C1 Univ Michigan, Dept Phys, Randall Lab 2477, Ann Arbor, MI 48109 USA. NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. Univ Space Res Assoc, Columbia, MD 21044 USA. Max Planck Inst Kernphys, D-69117 Heidelberg, Germany. Univ New S Wales, Sch Phys, Dept Astrophys & Opt, Sydney, NSW 2052, Australia. Sabanci Univ, Fac Engn & Nat Sci, TR-34958 Istanbul, Turkey. Univ Istanbul, Fac Sci, Dept Astron & Space Sci, TR-34119 Istanbul, Turkey. Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey. Canakkale Onsekiz Mart Univ, Dept Phys, TR-17020 Canakkale, Turkey. Univ Texas, Dept Astron, Austin, TX 78712 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Los Alamos Natl Lab, Space & Remote Sensing Sci Grp, Los Alamos, NM 87545 USA. RP Rykoff, ES (reprint author), Univ Michigan, Dept Phys, Randall Lab 2477, 450 Church St, Ann Arbor, MI 48109 USA. EM erykoff@umich.edu RI Guver, Tolga/C-1408-2011; Horns, Dieter/C-9727-2011; Gehrels, Neil/D-2971-2012; Barthelmy, Scott/D-2943-2012; Rujopakarn, Wiphu/E-7849-2012; McKay, Timothy/C-1501-2009; Guver, Tolga/B-1039-2014 OI Alatalo, Katherine/0000-0002-4261-2326; Rujopakarn, Wiphu/0000-0002-0303-499X; Flewelling, Heather/0000-0002-1050-4056; McKay, Timothy/0000-0001-9036-6150; Guver, Tolga/0000-0002-3531-9842 NR 19 TC 56 Z9 56 U1 0 U2 5 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD OCT 1 PY 2005 VL 631 IS 2 BP L121 EP L124 DI 10.1086/497370 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 971EX UT WOS:000232365700006 ER PT J AU Wang, XP Mauzerall, DL Hu, YT Russell, AG Larson, ED Woo, JH Streets, DG Guenther, A AF Wang, XP Mauzerall, DL Hu, YT Russell, AG Larson, ED Woo, JH Streets, DG Guenther, A TI A high-resolution emission inventory for eastern China in 2000 and three scenarios for 2020 SO ATMOSPHERIC ENVIRONMENT LA English DT Article DE air pollution; particulate matter; CO2; energy technology; coal ID ORGANIC-COMPOUND EMISSIONS; ANTHROPOGENIC EMISSIONS; ENERGY; NOX; POLLUTANTS; STATISTICS; OZONE; NO(X); ASIA; SO2 AB We develop a source-specific high-resolution emission inventory for the Shandong region of eastern China for 2000 and 2020. Our emission estimates for year 2000 are higher than other studies for most pollutants, due to our inclusion of rural coal consumption, which is significant but often underestimated. Still, our inventory evaluation suggests that we likely underestimate actual emissions. We project that emissions will increase greatly from 2000 to 2020 if no additional emission controls are implemented. As a result, PM2.5 concentrations will increase; however 03 concentrations will decrease in most areas due to increased NOx emissions and VOC-limited O-3 chemistry. Taking Zaozhuang Municipality in this region as a case study, we examine possible changes in emissions in 2020 given projected growth in energy consumption with no additional controls utilized (BAU), with adoption of best available end-of-pipe controls (BACT), and with advanced, low-emission coal gasification technologies (ACGT) which are capable of gasifying the high-sulfur coal that is abundant in China. Emissions of NH3 are projected to be 20% higher, NMVOC 50% higher, and all other species 130-250% higher in 2020 BAU than in 2000. Both alternative 2020 emission scenarios would reduce emissions relative to BAU. Adoption of ACGT, which meets only 24% of energy service demand in Zaozhuang in 2020 would reduce emissions more than BACT with 100% penetration. In addition, coal gasification technologies create an opportunity to reduce greenhouse gas emissions by capturing and sequestering CO2 emissions below ground. (c) 2005 Elsevier Ltd. All rights reserved. C1 Princeton Univ, Woodrow Wilson Sch Publ & Int Affairs, Sci Technol & Environm Policy Program, Princeton, NJ 08544 USA. Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA. Princeton Univ, Princeton Environm Inst, Princeton, NJ 08544 USA. Univ Iowa, Ctr Global & Reg Environm Res, Iowa City, IA 52242 USA. Argonne Natl Lab, DIS 900, Argonne, IL 60439 USA. Natl Ctr Atmospher Res, Div Atmospher Chem, Biosphere Atmosphere Interact Grp, Boulder, CO 80307 USA. RP Wang, XP (reprint author), World Bank, Mail Stop H3-307,1818 H St NW, Washington, DC 20433 USA. EM Xwang3@worldbank.org; mauzeral@princeton.edu RI Mauzerall, Denise/I-5977-2013; Guenther, Alex/B-1617-2008; Hu, Yongtao/H-7543-2016; OI Mauzerall, Denise/0000-0003-3479-1798; Guenther, Alex/0000-0001-6283-8288; Hu, Yongtao/0000-0002-5161-0592; Streets, David/0000-0002-0223-1350 NR 40 TC 57 Z9 69 U1 3 U2 48 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD OCT PY 2005 VL 39 IS 32 BP 5917 EP 5933 DI 10.1016/j.atmonsenv.2005.06.051 PG 17 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA 972DW UT WOS:000232435200015 ER PT J AU Garcia, HE Yoo, TS AF Garcia, HE Yoo, TS TI Model-based detection of routing events in discrete flow networks (vol 41, pg 583, 2005) SO AUTOMATICA LA English DT Correction C1 Idaho Natl Lab, Sensor Control & Decis Syst Grp, Idaho Falls, ID 83415 USA. RP Garcia, HE (reprint author), Idaho Natl Lab, Sensor Control & Decis Syst Grp, POB 1625, Idaho Falls, ID 83415 USA. NR 1 TC 0 Z9 0 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0005-1098 J9 AUTOMATICA JI Automatica PD OCT PY 2005 VL 41 IS 10 BP 1839 EP 1839 DI 10.1016/j.automatica.2005.06.001 PG 1 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA 960EQ UT WOS:000231573400018 ER PT J AU Gao, WM Liu, YQ Zhou, JZ Pan, HJ AF Gao, WM Liu, YQ Zhou, JZ Pan, HJ TI Effects of a strong static magnetic field on bacterium Shewanella oneidensis: an assessment by using whole genome microarray SO BIOELECTROMAGNETICS LA English DT Article DE DC; magnetic field; gene expression; transcription expression ID PUTREFACIENS MR-1; ESCHERICHIA-COLI; REDUCTASE; FUMARATE; ENZYME AB The effect of a strong static 14.1 T magnetic field on log phase cells of bacterial strain Shewanella oneidensis MR-1 was evaluated by using whole genome microarray of this bacterium. Although differences were not observed between the treatment and control by measuring the optical density (OD), colony forming unit (CFU), as well as post-exposure growth of cells, transcriptional expression levels of 65 genes were altered according to our microarray data. Among these genes, 21 were upregulated while other 44 were downregulated, compared with control. C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Environm Sci Lab, Oak Ridge, TN USA. RP Pan, HJ (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. EM hpan@utk.edu RI Gao, Weimin/J-1795-2014 OI Gao, Weimin/0000-0002-6758-9775 NR 24 TC 21 Z9 25 U1 2 U2 6 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0197-8462 J9 BIOELECTROMAGNETICS JI Bioelectromagnetics PD OCT PY 2005 VL 26 IS 7 BP 558 EP 563 DI 10.1002/bem.20133 PG 6 WC Biology; Biophysics SC Life Sciences & Biomedicine - Other Topics; Biophysics GA 970QR UT WOS:000232325200007 PM 16037957 ER PT J AU Crooks, GE Green, RE Brenner, SE AF Crooks, GE Green, RE Brenner, SE TI Pairwise alignment incorporating dipeptide covariation SO BIOINFORMATICS LA English DT Article ID AMINO-ACID SUBSTITUTION; MAXIMUM-LIKELIHOOD ALIGNMENT; PROTEIN EVOLUTION; SECONDARY STRUCTURE; SEQUENCE ALIGNMENT; DNA-SEQUENCES; MODEL; DATABASE; MATRICES; IDENTIFICATION AB Motivation: Standard algorithms for pairwise protein sequence alignment make the simplifying assumption that amino acid substitutions at neighboring sites are uncorrelated. This assumption allows implementation of fast algorithms for pairwise sequence alignment, but it ignores information that could conceivably increase the power of remote homolog detection. We examine the validity of this assumption by constructing extended substitution matrices that encapsulate the observed correlations between neighboring sites, by developing an efficient and rigorous algorithm for pairwise protein sequence alignment that incorporates these local substitution correlations and by assessing the ability of this algorithm to detect remote homologies. Results: Our analysis indicates that local correlations between substitutions are not strong on the average. Furthermore, incorporating local substitution correlations into pairwise alignment did not lead to a statistically significant improvement in remote homology detection. Therefore, the standard assumption that individual residues within protein sequences evolve independently of neighboring positions appears to be an efficient and appropriate approximation. C1 Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. RP Crooks, GE (reprint author), Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. EM gec@compbio.berkeley.edu RI Crooks, Gavin/H-7111-2012; Brenner, Steven/A-8729-2008 OI Brenner, Steven/0000-0001-7559-6185 FU NHGRI NIH HHS [1-K22-HG00056] NR 46 TC 8 Z9 8 U1 0 U2 4 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 1367-4803 J9 BIOINFORMATICS JI Bioinformatics PD OCT 1 PY 2005 VL 21 IS 19 BP 3704 EP 3710 DI 10.1093/bioinformatics/bti616 PG 7 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Computer Science, Interdisciplinary Applications; Mathematical & Computational Biology; Statistics & Probability SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Computer Science; Mathematical & Computational Biology; Mathematics GA 974MO UT WOS:000232596100002 PM 16123116 ER PT J AU Fodor, IK Nelson, DO Alegria-Hartman, M Robbins, K Langlois, RG Turteltaub, KW Corzett, TH McCutchen-Maloney, SL AF Fodor, IK Nelson, DO Alegria-Hartman, M Robbins, K Langlois, RG Turteltaub, KW Corzett, TH McCutchen-Maloney, SL TI Statistical challenges in the analysis of two-dimensional difference gel electrophoresis experiments using DeCyder (TM) SO BIOINFORMATICS LA English DT Article ID PROTEIN EXPRESSION; PROTEOMIC ANALYSIS AB Motivation: The DeCyder software (GE Healthcare) is the current state-of-the-art commercial product for the analysis of two-dimensional difference gel electrophoresis (2D DIGE) experiments. Analyses complementing DeCyder are suggested by incorporating recent advances from the microarray data analysis literature. A case study on the effect of smallpox vaccination is used to compare the results obtained from DeCyder with the results obtained by applying moderated t-tests adjusted for multiple comparisons to DeCyder output data that was additionally normalized. Results: Application of the more stringent statistical tests applied to the normalized 2D DIGE data decreased the number of potentially differentially expressed proteins from the number obtained from DeCyder and increased the confidence in detecting differential expression in human clinical studies. C1 Lawrence Livermore Natl Lab, Computat Directorate, Livermore, CA 94550 USA. Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA USA. RP Lawrence Livermore Natl Lab, Computat Directorate, Livermore, CA 94550 USA. EM fodor1@llnl.gov NR 25 TC 48 Z9 53 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 1367-4803 EI 1460-2059 J9 BIOINFORMATICS JI Bioinformatics PD OCT 1 PY 2005 VL 21 IS 19 BP 3733 EP 3740 DI 10.1093/bioinformatics/bti612 PG 8 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Computer Science, Interdisciplinary Applications; Mathematical & Computational Biology; Statistics & Probability SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Computer Science; Mathematical & Computational Biology; Mathematics GA 974MO UT WOS:000232596100006 PM 16091413 ER PT J AU Kasson, PM Huppa, JB Davis, MM Brunger, AT AF Kasson, PM Huppa, JB Davis, MM Brunger, AT TI A hybrid machine-learning approach for segmentation of protein localization data SO BIOINFORMATICS LA English DT Article ID SUPPORT VECTOR MACHINES; T-CELL-RECEPTOR; IMMUNOLOGICAL SYNAPSE FORMATION; INTRANUCLEAR INCLUSIONS; ACTIVE CONTOURS; RECOGNITION; ACTIVATION; DYNAMICS; COMPLEX; VISUALIZATION AB Motivation: Subcellular protein localization data are critical to the quantitative understanding of cellular function and regulation. Such data are acquired via observation and quantitative analysis of fluorescently labeled proteins in living cells. Differentiation of labeled protein from cellular artifacts remains an obstacle to accurate quantification. We have developed a novel hybrid machine-learning-based method to differentiate signal from artifact in membrane protein localization data by deriving positional information via surface fitting and combining this with fluorescence-intensity-based data to generate input for a support vector machine. Results: We have employed this classifier to analyze signaling protein localization in T-cell activation. Our classifier displayed increased performance over previously available techniques, exhibiting both flexibility and adaptability: training on heterogeneous data yielded a general classifier with good overall performance; training on more specific data cyielded an extremely high-performance specific classifier. We also demonstrate accurate automated learning utilizing additional experimental data. C1 Stanford Univ, Stanford Synchrotron Radiat Lab, Dept Mol & Cellular Physiol, Stanford, CA 94305 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, Dept Neurol & Neurol Sci, Stanford, CA 94305 USA. Stanford Univ, Med Sci Training Program, Stanford, CA 94305 USA. Stanford Univ, Biophys Program, Stanford, CA 94305 USA. Howard Hughes Med Inst, Stanford, CA 94305 USA. Stanford Univ, Sch Med, Dept Microbiol & Immunol, Stanford, CA 94305 USA. RP Brunger, AT (reprint author), Stanford Univ, Stanford Synchrotron Radiat Lab, Dept Mol & Cellular Physiol, Stanford, CA 94305 USA. EM brunger@stanford.edu OI Brunger, Axel/0000-0001-5121-2036 NR 40 TC 8 Z9 8 U1 0 U2 0 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 1367-4803 J9 BIOINFORMATICS JI Bioinformatics PD OCT 1 PY 2005 VL 21 IS 19 BP 3778 EP 3786 DI 10.1093/bioinformatics/bti615 PG 9 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Computer Science, Interdisciplinary Applications; Mathematical & Computational Biology; Statistics & Probability SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Computer Science; Mathematical & Computational Biology; Mathematics GA 974MO UT WOS:000232596100012 PM 16091410 ER PT J AU Goldovsky, L Janssen, P Ahren, D Audit, B Cases, I Darzentas, N Enright, AJ Lopez-Bigas, N Peregrin-Alvarez, JM Smith, M Tsoka, S Kunin, V Ouzounis, CA AF Goldovsky, L Janssen, P Ahren, D Audit, B Cases, I Darzentas, N Enright, AJ Lopez-Bigas, N Peregrin-Alvarez, JM Smith, M Tsoka, S Kunin, V Ouzounis, CA TI CoGenT++: an extensive and extensible data environment for computational genomics SO BIOINFORMATICS LA English DT Article ID PROTEIN FAMILIES; SEQUENCE DATABASE; ALGORITHM; GENE; RESOURCE; NCBI AB Motivation: CoGenT++ is a data environment for computational research in comparative and functional genomics, designed to address issues of consistency, reproducibility, scalability and accessibility. Description: CoGenT++ facilitates the re-distribution of all fully sequenced and published genomes, storing information about species, gene names and protein sequences. We describe our scalable implementation of ProXSim, a continually updated all-against-all similarity database, which stores pairwise relationships between all genome sequences. Based on these similarities, derived databases are generated for gene fusions-AllFuse, putative orthologs-OFAM, protein families-TRIBES, phylogenetic profiles-ProfUse and phylogenetic trees. Extensions based on the CoGenT++ environment include disease gene prediction, pattern discovery, automated domain detection, genome annotation and ancestral reconstruction. Conclusion: CoGenT++ provides a comprehensive environment for computational genomics, accessible primarily for large-scale analyses as well as manual browsing. C1 European Bioinformat Inst, EMBL, Computat Genom Grp, Cambridge Outstn, Cambridge CB10 1SD, England. CEN SCK, Belgian Nucl Res Ctr, Microbiol Lab, B-2400 Mol, Belgium. Natl Ctr Res & Technol, Inst Agrobiotechnol, GR-57001 Thessaloniki, Greece. Ecole Normale Super Lyon, Phys Lab, F-69364 Lyon, France. CSIC, Natl Biotechnol Ctr, CNB, Transcript Networks Grp, E-28049 Madrid, Spain. Sanger Inst, Cambridge CB10 1SA, England. Hosp Sick Children, Toronto, ON M5G 1X, Canada. DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. RP Ouzounis, CA (reprint author), European Bioinformat Inst, EMBL, Computat Genom Grp, Cambridge Outstn, Cambridge CB10 1SD, England. EM ouzounis@ebi.ac.uk RI Cases, Ildefonso/C-2998-2008; Enright, Anton/F-3094-2011; Darzentas, Nikos/D-6889-2012; Lopez-Bigas, Nuria/F-6193-2011; Ouzounis, Christos/G-2302-2010; Gasull, Martina/A-6630-2013; OI Cases, Ildefonso/0000-0002-8784-5174; Darzentas, Nikos/0000-0002-6365-7515; Lopez-Bigas, Nuria/0000-0003-4925-8988; Tsoka, Sophia/0000-0001-8403-1282; Peregrin-Alvarez, Jose M/0000-0002-7184-832X; Enright, Anton/0000-0002-6090-3100 NR 35 TC 15 Z9 16 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 1367-4803 J9 BIOINFORMATICS JI Bioinformatics PD OCT 1 PY 2005 VL 21 IS 19 BP 3806 EP 3810 DI 10.1093/bioinformatics/bti579 PG 5 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Computer Science, Interdisciplinary Applications; Mathematical & Computational Biology; Statistics & Probability SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Computer Science; Mathematical & Computational Biology; Mathematics GA 974MO UT WOS:000232596100018 PM 16216832 ER PT J AU Whiteman, HH Semlitsch, RD AF Whiteman, HH Semlitsch, RD TI Asymmetric reproductive isolation among polymorphic salamanders SO BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY LA English DT Article DE body size; breeding phenology; environmental heterogeneity; facultative paedomorphosis; fitness; polyphenism; reproductive behaviour; sympatric speciation ID TRITURUS-ALPESTRIS AMPHIBIA; MEXICAN AMBYSTOMATID SALAMANDERS; LIFE-HISTORY PATHWAYS; TIGER SALAMANDER; FACULTATIVE PEDOMORPHOSIS; SYMPATRIC MORPHS; PHENOTYPIC PLASTICITY; ADAPTIVE SIGNIFICANCE; TIGRINUM-NEBULOSUM; FEEDING MECHANISM AB The study of reproductive isolation (RI) as a prerequisite to sympatric speciation has been limited by a focus on species that have already experienced isolation. However, a complete understanding of speciation depends on observing taxa before they complete the speciation process. We estimated RI in field populations of the polyphenic mole salamander, Ambystoma talpoideum, by capturing paedomorphic (aquatic) and metamorphic (terrestrial) adults during the breeding season from two natural populations. We found evidence for asymmetric RI between morphs, such that paedomorphic males and metamorphic females had functionally zero RI, whereas metamorphic males and paedomorphic females had substantial RI. Evidence suggests that ecological factors such as the abundance of each morph, timing of rainfall, and water depth of the breeding habitat play a large role in the production of these asymmetries. Spatial aspects of RI had a greater relative impact on overall isolation than temporal differences, in part because metamorphic adults were often captured in shallower water than paedomorphic adults. However, morph separation varied across populations and year, suggesting that environmental heterogeneity likely plays a large role in the potential for RI, particularly between metamorphic males and paedomorphic females. In addition, body-size variation and behavioural differences could also influence the RI estimates presented here. Although facultative paedomorphosis appears to have played a large role in macroevolutionary change via allopatric speciation in some taxa, our results suggest that there is little potential for sympatric speciation in the future within these populations. However, asymmetric RI creates the opportunity for fitness differences between morphs and sexes that would directly affect the maintenance of this polymorphism. Our results suggest that further studies on this and other polyphenisms may provide valuable insight into the evolution of RI and the role of environmental heterogeneity in the production and maintenance of biological diversity. (c) 2005 The Linnean Society of London. C1 Murray State Univ, Dept Biol Sci, Murray, KY 42071 USA. Savannah River Ecol Lab, Aiken, SC 29802 USA. Univ Missouri, Div Biol Sci, Columbia, MO 65211 USA. RP Whiteman, HH (reprint author), Murray State Univ, Dept Biol Sci, Murray, KY 42071 USA. EM howard.whiteman@murraystate.edu OI Semlitsch, Raymond/0000-0002-7999-5762 NR 90 TC 18 Z9 20 U1 1 U2 12 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0024-4066 J9 BIOL J LINN SOC JI Biol. J. Linnean Soc. PD OCT PY 2005 VL 86 IS 2 BP 265 EP 281 DI 10.1111/j.1095-8312.2005.00537.x PG 17 WC Evolutionary Biology SC Evolutionary Biology GA 974JD UT WOS:000232586700009 ER PT J AU Fornasiero, F Krull, F Prausnitz, JM Radke, CJ AF Fornasiero, F Krull, F Prausnitz, JM Radke, CJ TI Steady-state diffusion of water through soft-contact-lens materials SO BIOMATERIALS LA English DT Article DE evaporation-cell method; water diffusion-coefficient; soft contact lens; extended Maxwell Stefan model; trapping skinning; glass transition ID SURFACE MECHANICAL-PROPERTIES; TEAR FILM MORPHOLOGY; T-2 RELAXATION; POLY(2-HYDROXYETHYL METHACRYLATE); SORPTION/DESORPTION PROPERTIES; STATISTICAL-MECHANICS; POLYMER-COATINGS; NMR MEASUREMENTS; DRYNESS RATINGS; TRANSPORT AB Water transport through soft contact lenses (SCL) is important for acceptable performance on the human eye. Chemical-potential gradient-driven diffusion rates of water through SCL materials are measured with an evaporation-cell technique. Water is evaporated from the bottom surface of a lens membrane by impinging air at controlled flow rate and humidity. The resulting weight loss of a water reservoir covering the top surface of the contact-lens material is recorded as a function of time. New results are reported for a conventional hydrogel material (SofLens (TM) One Day. hilafilcon A, water content Lit saturation w(10) = 70 weight %) and a silicone hydrogel material (PureVision (TM), balafilcon A, w(10) = 36%), with and without surface oxygen plasma treatment. Also, previously reported data for a conventional 2-hydroxyethyl methacrylate (HEMA)-SCL (w(10) = 38%) hydrogel are reexamined and compared with those for SofLens (TM) One Day and PureVision (TM) hydrogels. Measured steady-state water fluxes are largest for SofLens (TM) One Day, followed by PureVision (TM) and HEMA. fit some cases, the measured steady-state water fluxes increase with rising relative air humidity. This increase. due to an apparent mass-transfer resistance at the surface (trapping skinning), is associated with formation of a glassy skin at the air/membrane interface when the relative humidity is below 55-75%. Steady-state water fluxes are interpreted through an extended Maxwell-Stefan diffusion model for a mixture of species starkly different in size. Thermodynamic nonideality is considered through Flory-Rehner polymer-solution theory. Shrinking/swelling is self-consistently modeled by conservation of the total polymer mass. Fitted Maxwell Stefan diffusivities increase significantly with water concentration in the contact lens. (c) 2005 Published by Elsevier Ltd. C1 Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. RP Radke, CJ (reprint author), Univ Calif Berkeley, Dept Chem Engn, 201,Gilman Hall, Berkeley, CA 94720 USA. EM f_fornasiero@berkeley.edu; krull@ivt.rwth-aachen.de; prausnit@cchem.berkeley.edu; radke@berkeley.edu RI Fornasiero, Francesco/I-3802-2012 NR 78 TC 30 Z9 30 U1 6 U2 37 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0142-9612 J9 BIOMATERIALS JI Biomaterials PD OCT PY 2005 VL 26 IS 28 BP 5704 EP 5716 DI 10.1016/j.biomaterials.2005.02.028 PG 13 WC Engineering, Biomedical; Materials Science, Biomaterials SC Engineering; Materials Science GA 931NO UT WOS:000229492200015 PM 15878376 ER PT J AU Nukala, PKVV Simunovic, S AF Nukala, PKVV Simunovic, S TI A continuous damage random thresholds model for simulating the fracture behavior of nacre SO BIOMATERIALS LA English DT Article DE nacre; fracture toughness; biomimetic material; fracture mechanism; nanocomposite; random fuse model ID MECHANICAL-PROPERTIES; STROMBUS-GIGAS; COMPOSITES; TOUGHNESS; DEFORMATION; BREAKDOWN; NETWORKS; TENSION; MOTHER; PEARL AB This study investigates the fracture properties of nacre using a discrete lattice model based on continuous damage random threshold fuse network. The discrete lattice topology of the model is based on nacre's unique brick and mortar microarchitecture. The mechanical behavior of each of the bonds in the discrete lattice model is governed by the characteristic modular damage evolution of the organic matrix and the mineral bridges between the aragonite platelets. The numerical results obtained using this simple discrete lattice model are in very good agreement with the previously obtained experimental results, such as nacre's stiffness, tensile strength, and work of fracture. The analysis indicates that nacre's superior toughness is a direct consequence of ductility (maximum shear strain) of the organic matrix in terms of repeated unfolding of protein molecules, and its fracture strength is a result of its ordered brick and mortar architecture with significant overlap of the platelets, and shear strength of the organic matrix. (c) 2005 Elsevier Ltd. All rights reserved. C1 Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. RP Oak Ridge Natl Lab, Comp Sci & Math Div, POB 2008, Oak Ridge, TN 37831 USA. EM nukalapk@ornl.gov NR 38 TC 31 Z9 33 U1 3 U2 16 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0142-9612 EI 1878-5905 J9 BIOMATERIALS JI Biomaterials PD OCT PY 2005 VL 26 IS 30 BP 6087 EP 6098 DI 10.1016/j.biomaterials.2005.03.013 PG 12 WC Engineering, Biomedical; Materials Science, Biomaterials SC Engineering; Materials Science GA 945YK UT WOS:000230538700018 PM 15958244 ER PT J AU Bi, LR Zhang, Y Zhao, M Wang, C Chan, P Tok, JBH Peng, SQ AF Bi, LR Zhang, Y Zhao, M Wang, C Chan, P Tok, JBH Peng, SQ TI Novel synthesis and anti-inflammatory activities of 2,5-disubstituted-dioxacycloalkanes SO BIOORGANIC & MEDICINAL CHEMISTRY LA English DT Article DE acetalization; 2,5-disubstituted-dioxacycloalkanes; anti-inflammatory activity ID PROTEIN-KINASE-C; CONFORMATIONALLY CONSTRAINED ANALOGS; DIACYLGLYCEROL; TRANSACETALIZATION; INFLAMMATION; VERSATILE; PSORIASIS; LACTONES; TARGET; SKIN AB A novel stereospecific synthetic route to obtain a series of 2,5-disubstituted-dioxacycloalkanes is reported. Using an in vivo inhibition assay by monitoring xylene-induced ear edema in mice, the structure-activity relationship of the dioxacycloalkane compounds was studied, and compounds possessing high anti-inflammatory activity were identified. (c) 2005 Elsevier Ltd. All rights reserved. C1 Peking Univ, Coll Pharmaceut Sci, Beijing 100054, Peoples R China. Capital Univ Med Sci, Coll Pharmaceut Sci, Beijing 100054, Peoples R China. Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94551 USA. RP Zhao, M (reprint author), Peking Univ, Coll Pharmaceut Sci, Beijing 100054, Peoples R China. EM tok2@llnl.gov; sqpeng@mail.bjmu.edu.cn NR 20 TC 18 Z9 18 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0968-0896 J9 BIOORGAN MED CHEM JI Bioorg. Med. Chem. PD OCT 1 PY 2005 VL 13 IS 19 BP 5640 EP 5646 DI 10.1016/j.bmc.2005.05.032 PG 7 WC Biochemistry & Molecular Biology; Chemistry, Medicinal; Chemistry, Organic SC Biochemistry & Molecular Biology; Pharmacology & Pharmacy; Chemistry GA 961LG UT WOS:000231663300013 PM 15996872 ER PT J AU Mirocha, JD Kosovic, B Curry, JA AF Mirocha, JD Kosovic, B Curry, JA TI Vertical heat transfer in the lower atmosphere over the Arctic Ocean during clear-sky periods SO BOUNDARY-LAYER METEOROLOGY LA English DT Article DE stable atmospheric boundary layer; surface heat budget; turbulent heat flux ID LARGE-EDDY SIMULATION; PLANETARY BOUNDARY-LAYER; TURBULENCE STRUCTURE; ANNUAL CYCLE; RADIATIVE FLUXES; ICE-SHEET; CLOUD; SHEBA; FORMULATION; WAVE AB A diagnostic study of heat transfer within the lower atmosphere and between the atmosphere and the surface of the Arctic Ocean snow/ice pack during clear-sky conditions is conducted using data from the Surface Heat Budget of the Arctic Ocean (SHEBA) field experiment. Surface heat budgets computed for four cloudy and four clear periods show that, while the net turbulent heat fluxes at the surface are small during the cloudy periods, during the clear-sky periods they are a considerable source of surface heating, balancing significant portions of the conductive heat fluxes from within the snow/ice pack. Analysis of the dynamics and thermodynamics of the lower atmosphere during the clear-sky periods reveals that a considerable portion of the heat lost to the surface by turbulent heat fluxes is balanced by locally strong heating near the atmospheric boundary-layer (ABL) top due to the interaction of subsiding motions with the strong overlying temperature inversions surmounting the ABL. This heat is then entrained into the ABL and transported to the surface by turbulent mixing, maintained by a combination of vertical wind shear and wave-turbulence interactions. The frequency of stable, clear-sky periods, particularly during the winter, combined with these results, suggests that the downward transfer of heat through the lower atmosphere and into the surface represents an important component of the heat budgets of the lower atmosphere and snow/ice pack over the annual cycle. C1 Univ Colorado, Program Atmospher & Ocean Sci, Boulder, CO 80309 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA. RP Mirocha, JD (reprint author), Univ Colorado, Program Atmospher & Ocean Sci, Boulder, CO 80309 USA. EM mirocha@colorado.edu NR 43 TC 6 Z9 6 U1 1 U2 2 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0006-8314 J9 BOUND-LAY METEOROL JI Bound.-Layer Meteor. PD OCT PY 2005 VL 117 IS 1 BP 37 EP 71 DI 10.1007/s10546-004-1130-3 PG 35 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 977HB UT WOS:000232792900003 ER PT J AU Roy, AH Faust, CL Freeman, MC Meyer, JL AF Roy, AH Faust, CL Freeman, MC Meyer, JL TI Reach-scale effects of riparian forest cover on urban stream ecosystems SO CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES LA English DT Article ID MULTIPLE SPATIAL SCALES; LAND-USE; FISH ASSEMBLAGES; TERRESTRIAL INVERTEBRATES; STABLE-ISOTOPES; WATER-QUALITY; URBANIZATION; USA; COMMUNITIES; PERIPHYTON AB We compared habitat and biota between paired open and forested reaches within five small streams (basin area 10-20 km(2)) in suburban catchments (9%-49% urban land cover) in the Piedmont of Georgia, USA. Stream reaches with open canopies were narrower than forested reaches (4.1 versus 5.0 m, respectively). There were no differences in habitat diversity (variation in velocity, depth, or bed particle size) between open and forested reaches. However, absence of local forest cover corresponded to decreased large wood and increased algal chlorophyll a standing crop biomass. These differences in basal food resources translated into higher densities of fishes in open (9.0 individuals center dot m(-2)) versus forested (4.9 individuals center dot m(-2)) reaches, primarily attributed to higher densities of the herbivore Campostoma oligolepis. Densities of terrestrial invertebrate inputs were higher in open reaches; however, trends suggested higher biomass of terrestrial inputs in forested reaches and a corresponding higher density of terrestrial prey consumed by water column feeding fishes. Reach-scale biotic integrity (macroinvertebrates, salamanders, and fishes) was largely unaffected by differences in canopy cover. In urbanizing areas where catchment land cover drives habitat and biotic quality, management practices that rely exclusively on forested riparian areas for stream protection are unlikely to be effective at maintaining ecosystem integrity. C1 Univ Georgia, Inst Ecol, Athens, GA 30602 USA. Cedar Shoals High Sch, Athens, GA 30605 USA. Univ Georgia, US Geol Survey, Patuxent Wildlife Res Ctr, Athens, GA 30602 USA. RP Roy, AH (reprint author), US EPA, Oak Ridge Inst Sci & Educ, Natl Risk Management Res Lab, Sustainable Environm Branch, 26 W Martin Luther King Dr,MS 498, Cincinnati, OH 45268 USA. EM roy.allison@epa.gov OI Faust, Christina L./0000-0002-8824-7424 NR 60 TC 46 Z9 47 U1 4 U2 41 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA, ONTARIO K1A 0R6, CANADA SN 0706-652X J9 CAN J FISH AQUAT SCI JI Can. J. Fish. Aquat. Sci. PD OCT PY 2005 VL 62 IS 10 BP 2312 EP 2329 DI 10.1139/F05-135 PG 18 WC Fisheries; Marine & Freshwater Biology SC Fisheries; Marine & Freshwater Biology GA 978EJ UT WOS:000232856100014 ER PT J AU Fayek, M Utsunomiya, S Pfiffner, SM White, DC Riciputi, LR Ewing, RC Anovitz, LM Stadermann, FJ AF Fayek, M Utsunomiya, S Pfiffner, SM White, DC Riciputi, LR Ewing, RC Anovitz, LM Stadermann, FJ TI The application of HRTEM techniques and nanosims to chemically and isotopically characterize Geobacter sulfurreducens surfaces SO CANADIAN MINERALOGIST LA English DT Article; Proceedings Paper CT Symposium on S3 - Sulphides, Structures and Synchrotron Light held at the 2004 GAC-MAC Annual Meeting in Honor of Micheal E L Fleet CY 2004 CL St Catharines, Ontario, CANADA SP Mineralog Assoc Canada HO St Catharines DE nanoscale secondary-ion mass spectrometry (NanoSIMS); high-resolution transmission electron microscopy (HRTEM); Geobacter sulfurreducens; uraninite ID C-TYPE CYTOCHROME; O-U SYSTEM; BACILLUS-SUBTILIS; ELECTRON-MICROSCOPY; MASS-SPECTROMETRY; COMPOSITION RANGE; CULTURED-CELLS; U6+ PHASES; URANIUM; PRECIPITATION AB Bioprecipitated minerals are typically at the nanometer scale, hydrous, and beam-sensitive (i.e., can recrystallize during analysis), making them difficult to characterize using standard spectroscopic or electron-beam techniques. We have combined the ion-imaging capabilities of nanoscale secondary-ion mass spectrometry (NanoSIMS) and advanced high-resolution transmission electron microscopy (HRTEM) in order to characterize the surfaces of Geobacter sulfurreducens and the bioprecipitated uranium phases. Our results reveal the association between nutrient uptake and precipitation of uranium minerals. Biosequestration of uranium is enhanced by addition of nutrients such as acetic acid, and uranium is precipitated on the surface of the bacteria as nanocrystals of uraninite (UO2). The bioprecipitation of this anhydrous U-rich phase is significant; although UO2 is thermodynamically stable over a range of pH values (2 to 12) and oxidizing conditions [Eh 0.2 to -0.2, or f(O-2) of approximately -50 to -125], thermodynamic models of inorganic systems suggest that U6+ oxyhydroxide minerals should be stable. Our results suggest that the biofilm shielded the UO2 from re-oxidation and that bacteria can immobilize uranium for extended periods, even under relatively oxidizing conditions in the subsurface. C1 Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. Univ Michigan, Dept Geol Sci, Ann Arbor, MI 48109 USA. Univ Tennessee, Ctr Biomarker Anal, Knoxville, TN 37932 USA. Washington Univ, Dept Phys, St Louis, MO 63130 USA. RP Fayek, M (reprint author), Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA. EM mfayek@utk.edu RI Anovitz, Lawrence/P-3144-2016 OI Anovitz, Lawrence/0000-0002-2609-8750 NR 39 TC 11 Z9 12 U1 0 U2 9 PU MINERALOGICAL ASSOC CANADA PI OTTAWA PA PO BOX 78087, MERILINE POSTAL OUTLET, 1460 MERIVALE RD, OTTAWA, ONTARIO K2E 1B1, CANADA SN 0008-4476 J9 CAN MINERAL JI Can. Mineral. PD OCT PY 2005 VL 43 BP 1631 EP 1641 DI 10.2113/gscanmin.43.5.1631 PN 5 PG 11 WC Mineralogy SC Mineralogy GA 010VN UT WOS:000235226100016 ER PT J AU Core, DP Kesler, SE Essene, EJ Dufresne, EB Clarke, R Arms, DA Walko, D Rivers, ML AF Core, DP Kesler, SE Essene, EJ Dufresne, EB Clarke, R Arms, DA Walko, D Rivers, ML TI Copper and zinc in silicate and oxide minerals in igneous rocks from the Bingham - Park City Belt, Utah: Synchrotron X-ray-fluorescence data SO CANADIAN MINERALOGIST LA English DT Article; Proceedings Paper CT Symposium on S3 - Sulphides, Structures and Synchrotron Light held at the 2004 GAC-MAC Annual Meeting in Honor of Michael E L Fleet CY 2004 CL Brock Univ, St Catharines, CANADA SP GAC, MAC HO Brock Univ DE synchrotron X-ray fluorescence; copper; zinc; magnetite; biotite; hornblende; clinopyroxene; feldspar; ilmenite; chlorite.; granitic rocks; Bingham - Park City Belt; Utah ID PHASE-RELATIONS; VOLCANIC-ROCKS; BIOTITE; SYSTEM; INTRUSIONS; INCLUSIONS; OXIDATION; DEPOSITS AB Synchrotron X-ray-fluorescence (SXRF) analyses for Cu, Zn and Fe were carried out on magmatic minerals from intrusive and volcanic rocks in the Bingham - Park City Belt, Utah. The main goals of the study were to determine average Cu and Zn contents and zoning patterns in magmatic minerals in order to shed light on the chemical behavior of Cu and Zn during crystallization of the magmas. The combination of low limits of detection and small analytical footprint makes SXRF the preferred method for tests of this type. Results of the study show that the Zn is homogeneously distributed through most ferromagnesian minerals, commonly following Fe, for which it probably substitutes. The distribution of Cu is more complex, and includes Cu-rich patches of as yet unknown mineralogy that are widespread in all minerals. Median Cu and Zn contents for magmatic minerals, estimated excluding the Cu-rich patches, are lower than and higher than, respectively, those of volcanic rocks in the area. Copper thus must have behaved incompatibly, whereas Zn behaved compatibly during magmatic crystallization. Decreasing Cu concentrations from core to rim were observed in biotite from the volcanic rocks, but Cu and Zn zoning is absent in ferromagnesian minerals in the intrusive rocks. Altered rims on biotite in the intrusive rocks are enriched in Cu and locally in Zn thought to reflect post-crystallization migration of a late magmatic vapor phase. C1 Univ Michigan, Dept Geol Sci, Ann Arbor, MI 48109 USA. Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. Argonne Natl Lab, HATT, CAT, Argonne, IL 60439 USA. Univ Chicago, Argonne Natl Lab, Argonne, IL 60439 USA. RP Core, DP (reprint author), POB 1675, Perth, WA 6872, Australia. EM dancore@ozzie.net.au; skesler@umich.edu NR 51 TC 6 Z9 6 U1 0 U2 11 PU MINERALOGICAL ASSOC CANADA PI OTTAWA PA PO BOX 78087, MERILINE POSTAL OUTLET, 1460 MERIVALE RD, OTTAWA, ONTARIO K2E 1B1, CANADA SN 0008-4476 J9 CAN MINERAL JI Can. Mineral. PD OCT PY 2005 VL 43 BP 1781 EP 1796 DI 10.2113/gscanmin.43.5.1781 PN 5 PG 16 WC Mineralogy SC Mineralogy GA 010VN UT WOS:000235226100025 ER PT J AU Davern, SM Foote, LJ Lankford, TK Macy, SD Wall, MD Kennel, SJ AF Davern, SM Foote, LJ Lankford, TK Macy, SD Wall, MD Kennel, SJ TI Identification of an antilaminin-1 scFv that preferentially homes to vascular solid tumors SO CANCER BIOTHERAPY AND RADIOPHARMACEUTICALS LA English DT Article DE Laminin-1; scFv; immunotherapy; solid tumors; blood vessels; basement membrane ID SINGLE-CHAIN FV; ANTIBODY FRAGMENTS; ENDOTHELIAL-CELLS; LAMININ ALPHA-1; MELANOMA-CELLS; CANCER-THERAPY; IN-VITRO; METASTASIS; LUNG; ANGIOGENESIS AB The tumor vasculature and extracellular matrix make attractive targets for distinguishing solid tumors from normal cells. In solid tumors, the processes of angiogenesis and metastasis potentially give rise to unique epitopes not usually accessible in homeostatic organs. Specific targeting of solid tumors for radioimmunotherapy requires that the targeting agent accumulate rapidly and at high levels at the tumor site. This study involved the selection of scFvs that recognize laminin-1 in vitro from the Tomlinson I and J phage display libraries. Selected, purified scFvs were radioiodinated and injected in tumor-bearing mice. One of these, scFv 15-9, exhibited preferential accumulation at subcutaneous tumors when compared to other antilaminin scFvs or to a control scFv. Autoradiographic analysis indicated that scFv 15-9 also displayed a higher vessel:parenchyma ratio than did two other antilaminin scFvs, scFv 15-6 and scFv 15-1, indicating a preferential accumulation of scFv 15-9 around vessel structures. Immunohistochemistry confirmed that scFv 15-9 accumulated at sites of endothelial cells lining vessel structures where significant levels of laminin were present. These data demonstrate that scFv 15-9 binds to a specific epitope on laminin and has potential for tumor endoradiotherapy in subcutaneous tumors. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Tennessee, Med Ctr, Knoxville, TN USA. RP Kennel, SJ (reprint author), Oak Ridge Natl Lab, Bethel Valley Rd,Bldg 45005,Room F150, Oak Ridge, TN 37831 USA. EM Kennelsj@ornl.gov NR 39 TC 4 Z9 5 U1 1 U2 4 PU MARY ANN LIEBERT INC PI NEW ROCHELLE PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA SN 1084-9785 J9 CANCER BIOTHER RADIO JI Cancer Biother. Radiopharm. PD OCT PY 2005 VL 20 IS 5 BP 524 EP 533 DI 10.1089/cbr.2005.20.524 PG 10 WC Oncology; Medicine, Research & Experimental; Pharmacology & Pharmacy; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Research & Experimental Medicine; Pharmacology & Pharmacy; Radiology, Nuclear Medicine & Medical Imaging GA 982EK UT WOS:000233140500007 PM 16248768 ER PT J AU Bascom, JL Fata, JE Hirai, Y Sternlicht, MD Bissell, MJ AF Bascom, JL Fata, JE Hirai, Y Sternlicht, MD Bissell, MJ TI Epimorphin overexpression in the mouse mammary gland promotes alveolar hyperplasia and mammary adenocarcinoma SO CANCER RESEARCH LA English DT Article ID EPITHELIAL MORPHOGENESIS; EXPRESSION; STROMELYSIN-1; CARCINOMA; SIGNATURE; CANCER; TUMORS; MICE AB Epimorphin/syntaxin-2 (EPM) is a plasma membraneanchored protein that has at least two distinct functions depending on its membrane topology: vesicle fusion when localized to the cytoplasmic surface and morphogenic signaling when localized to the extracellular surface. Transgenic mice that express full-length extracellular EPM fused to the NH2-terminal signal sequence of interleukin-2, under the control of the whey acidic protein (WAP) gene promoter, exhibit aberrant mammary gland morphogenesis associated with increased expression of CCAAT enhancer binding protein beta (C/EBP beta). Here we report that aged nulliparous and uniparous female WAP-EPM transgenic mice develop alveolar hyperplasias and well-differentiated adenocarcinomas that express high levels of C/EBP beta, keratin-14, matrix metal-loproteinase-3, and beta-catenin. This study reveals another pathway in which overexpression and alteration of a normal morphogenic process promote the development of cancer in the mammary gland. C1 Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. Kyoto Univ, Inst Frontier Med Sci, Dept Morphoregulat, Sakyo Ku, Kyoto, Japan. Univ Calif San Francisco, Dept Anat, San Francisco, CA 94143 USA. RP Bissell, MJ (reprint author), Lawrence Berkeley Lab, Div Life Sci, Mailstop 977R-225A,1Cyclotron Rd, Berkeley, CA 94720 USA. EM MJBissell@lbl.gov FU NCI NIH HHS [CA58207] NR 18 TC 25 Z9 27 U1 0 U2 2 PU AMER ASSOC CANCER RESEARCH PI PHILADELPHIA PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA SN 0008-5472 J9 CANCER RES JI Cancer Res. PD OCT 1 PY 2005 VL 65 IS 19 BP 8617 EP 8621 DI 10.1158/0008-5472 PG 5 WC Oncology SC Oncology GA 968YL UT WOS:000232199400009 PM 16204027 ER PT J AU Chan, C Crawford, G Gao, YM Hurt, R Jian, KQ Li, H Sheldon, B Sousa, M Yang, N AF Chan, C Crawford, G Gao, YM Hurt, R Jian, KQ Li, H Sheldon, B Sousa, M Yang, N TI Liquid crystal engineering of carbon nanofibers and nanotubes SO CARBON LA English DT Article DE carbon nanofibers; carbon nanotubes; mesophase pitch; electron microscopy; crystal structure ID MESOPHASE PITCH; TEMPLATE METHOD; GRAPHITIZATION; ARRAYS; FILMS AB Four high-aspect-ratio carbon nanomaterials were fabricated by template-directed liquid crystal assembly and covalent capture. By selecting from two different liquid crystal precursors (thermotropic AR mesophase, and lyotropic indanthrone disulfonate) and two different nanochannel template wall materials (alumina and pyrolytic carbon) both the shape of the nanocarbon and the graphene layer arrangement can be systematically engineered. The combination of AR mesophase and alumina channel walls gives platelet-symmetry nanofibers, whose basic crystal symmetry is maintained and perfected upon heat treatment at 2500 degrees C. In contrast, AR infiltration into carbon-lined nanochannels produces unique C/C-composite nanofibers whose graphene planes lie parallel to the fiber axis. The transverse section of these composite nanofibers shows a planar polar structure with line defects, whose existence had been previously predicted from liquid crystal theory. Use of solvated AR fractions or indanthrone disulfonate produces platelet-symmetry tubes, which are either cellular or fully hollow depending on solution concentration. The use of barium salt solutions to force precipitation of indanthrone disulfonate within the nanochannels yields continuous nanoribbons rather than tubes. Overall the results demonstrate that liquid crystal synthesis routes provide molecular control over graphene layer alignment in nanocarbons with a power and flexibility that rivals the much better known catalytic routes. (C) 2005 Elsevier Ltd. All rights reserved. C1 Brown Univ, Div Engn, Providence, RI 02912 USA. Sandia Natl Labs, Livermore, CA USA. RP Hurt, R (reprint author), Brown Univ, Div Engn, Box D, Providence, RI 02912 USA. EM robert_hurt@brown.edu NR 32 TC 45 Z9 45 U1 4 U2 47 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0008-6223 J9 CARBON JI Carbon PD OCT PY 2005 VL 43 IS 12 BP 2431 EP 2440 DI 10.1016/j.carbon.2005.04.033 PG 10 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 967LT UT WOS:000232093400001 ER PT J AU Kubas, GJ AF Kubas, GJ TI Catalytic processes involving dihydrogen complexes and other sigma-bond complexes SO CATALYSIS LETTERS LA English DT Review DE hydrogenation; homogeneous catalysis; heterogeneous catalysis; dihydrogen complexes; hydride; sigma complexes; silane; silane alcoholysis; methane; heterolytic cleavage; oxidative addition; electrophilic complexes; isotopic exchange; hydrogenase ID MOLECULAR-HYDROGEN COMPLEXES; TRANSITION-METAL-COMPLEXES; INELASTIC-NEUTRON-SCATTERING; C-H ACTIVATION; ISOTOPE-EXCHANGE-REACTIONS; HYDRIDE DONOR ABILITIES; X-RAY-STRUCTURE; SILANE ALCOHOLYSIS; HOMOGENEOUS CATALYSIS; RUTHENIUM COMPLEXES AB The discovery of dihydrogen complexes, LnM(H-2), pointed to direct transfer of hydrogen from coordinated H-2 ligands to substrates as an operable pathway in catalysis both in homogeneous and heterogeneous systems. Sigma complexes, LnM(eta(2)-H-X) (X = H, Si, C, etc), are indeed relevant in hydrogenation as well as silane alcoholysis and methane conversion. C1 Los Alamos Natl Lab, Struct Inorgan Chem Grp, Div Chem, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, Struct Inorgan Chem Grp, Div Chem, MS J514,POB 1663, Los Alamos, NM 87545 USA. EM kubas@lanl.gov NR 206 TC 62 Z9 63 U1 1 U2 30 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1011-372X EI 1572-879X J9 CATAL LETT JI Catal. Lett. PD OCT PY 2005 VL 104 IS 1-2 BP 79 EP 101 DI 10.1007/s10562-005-7440-3 PG 23 WC Chemistry, Physical SC Chemistry GA 969AD UT WOS:000232204900013 ER PT J AU Wang, YS Giannone, RJ Liu, Y AF Wang, YS Giannone, RJ Liu, Y TI Telomere sister chromatid exchange in telomerase deficient murine cells SO CELL CYCLE LA English DT Article DE telomerase deficiency; critically short telomeres; telomere sister chromatid exchange ID CRITICALLY SHORT TELOMERES; DNA-PKCS; MAINTENANCE; CANCER; RECOMBINATION; MOUSE; MTERT; KU86; MICE AB We have recently demonstrated that several types of genomic rearrangements (i.e., telomere sister chromatid exchange (T-SCE), genomic-SCE, or end-to-end fusions) were more often detected in long-term cultured murine telomerase deficient embryonic stem (ES) cells than in freshly prepared murine splenocytes, even through they possessed similar frequencies of critically short telomeres. The high rate of genomic rearrangements in telomerase deficient ES cells, when compared to murine splenocytes, may reflect the cultured cells' gained ability to protect chromosome ends with eroded telomeres allowing them to escape "end crisis". However, the possibility that ES cells were more permissive to genomic rearrangements than other cell types or that differences in the microenvironment or genetic background of the animals might consequentially determine the rate of T-SCEs or other genomic rearrangements at critically short telomeres could not be ruled out. C1 Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. RP Liu, Y (reprint author), Oak Ridge Natl Lab, Div Life Sci, Bethel Valley Rd,POB 2008,Bldg 1061,Room 208, Oak Ridge, TN 37831 USA. EM liuy3@ornl.gov NR 19 TC 8 Z9 8 U1 1 U2 1 PU LANDES BIOSCIENCE PI GEORGETOWN PA 810 SOUTH CHURCH STREET, GEORGETOWN, TX 78626 USA SN 1538-4101 J9 CELL CYCLE JI Cell Cycle PD OCT PY 2005 VL 4 IS 10 BP 1320 EP 1322 DI 10.4161/cc.4.10.2075 PG 3 WC Cell Biology SC Cell Biology GA 990NW UT WOS:000233751500004 PM 16131840 ER PT J AU Kim, H Kaczmarski, K Guiochon, G AF Kim, H Kaczmarski, K Guiochon, G TI Mass transfer kinetics on the heterogeneous binding sites of molecularly imprinted polymers SO CHEMICAL ENGINEERING SCIENCE LA English DT Article DE Fmoc-L-tryptophan imprinted polymers; frontal analysis; mass transfer kinetics; isotherm parameters; Tri-Langmuir isotherm model; Bi-Langmuir isotherm model; lumped pore diffusion model; intraparticle diffusion; peak profiles; isosteric heat of adsorption; surface heterogeneity ID CHROMATOGRAPHIC BAND PROFILES; CONCENTRATION-DEPENDENCE; STATIONARY-PHASE; FRONTAL ANALYSIS; ADSORPTION; SURFACE; SIMULATION; DISPERSION; COLUMNS; MODEL AB The mass transfer kinetics of the L- and D-Fmoc-Tryptophan (Fmoc-Trp) enantiomers on Fmoc-L-Trp imprinted polymer (MlP) and on its reference polymer (NIP), were measured using their elution peak profiles and the breakthrough curves recorded in frontal analysis for the determination of their equilibrium isotherms, at temperatures of 40, 50, 60, and 70 degrees C. At all temperatures, the isotherm data of the Fmoc-Trp enantiomers on the MIP were best accounted for by the Tri-Langmuir isotherm model, while the isotherm data of Fmoc-Trp on the NIP were best accounted for by the Bi-Langmuir isotherm model. The profiles of the elution bands of various amounts of each enantiomer were acquired in the concentration range from 0.1 to 40 mM. These experimental profiles were compared with those calculated using the best values estimated for the isotherm parameters and the lumped pore diffusion model (POR), which made possible to calculate the intraparticle diffusion coefficients for each system. The results show that surface diffusion contributes predominantly to the overall mass transfer kinetics on both the MIP and the NIP, compared to external mass transfer and pore diffusion. The surface diffusion coefficients (D-s) of Fmoc-L-Trp on the NIP does not depend on the amount bound (q) while the values of Ds for the two Fmoc-Trp enantiomers on the MIP increase with increasing q at all temperatures. These positive dependencies of D-s on q for Fmoc-Trp on the MIP were fairly well modeled by indirectly incorporating surface heterogeneity into the surface diffusion coefficient. The results obtained show that the mass transfer kinetics of the enantiomers on the imprinted polymers depend strongly on the surface heterogeneity. (c) 2005 Elsevier Ltd. All rights reserved. C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. Rzeszow Univ Technol, Fac Chem, PL-35959 Rzeszow, Poland. RP Guiochon, G (reprint author), Univ Tennessee, Dept Chem, 1420 Circle Dr, Knoxville, TN 37996 USA. EM guiochon@utk.edu NR 36 TC 39 Z9 41 U1 0 U2 12 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0009-2509 J9 CHEM ENG SCI JI Chem. Eng. Sci. PD OCT PY 2005 VL 60 IS 20 BP 5425 EP 5444 DI 10.1016/j.ces.2005.04.057 PG 20 WC Engineering, Chemical SC Engineering GA 955NN UT WOS:000231232800002 ER PT J AU Bennion, BJ Cosman, M Lightstone, FC Knize, MG Montgomery, JL Bennett, LM Felton, JS Kulp, KS AF Bennion, BJ Cosman, M Lightstone, FC Knize, MG Montgomery, JL Bennett, LM Felton, JS Kulp, KS TI PhIP carcinogenicity in breast cancer: Computational and experimental evidence for competitive interactions with human estrogen receptor SO CHEMICAL RESEARCH IN TOXICOLOGY LA English DT Article ID LIGAND-BINDING DOMAIN; MAMMARY-GLAND CARCINOGENESIS; HETEROCYCLIC AMINE CONTENT; IN-VITRO ASSAYS; ER-ALPHA; CELL-PROLIFERATION; CRYSTAL-STRUCTURE; COOKED FOOD; E-SCREEN; BETA AB Many carcinogens have been shown to cause tissue specific tumors in animal models. The mechanism for this specificity has not been fully elucidated and is usually attributed to differences in organ metabolism. For heterocyclic amines, potent carcinogens that are formed in well-done meat, the ability to either bind to the estrogen receptor and activate or inhibit an estrogenic response will have a major impact on carcinogenicity. Here, we describe our work with the human estrogen receptor alpha (ER alpha), the mutagenic/carcinogenic heterocyclic amines PhIP, MeIQx, and IFP, and the hydroxylated metabolite of PhIP, N-2-hydroxy-PhIP. We demonstrate both by computational docking and NMR analysis that PhIP binds with the ligand binding domain (LBD). This binding competes with estradiol (E2) in the native E2 binding cavity of the receptor. In vitro assays show that PhIP, in contrast to the other heterocyclic amines, increases cell proliferation in MCF-7 human breast cancer cells and activates the ER alpha receptor. We also find that other heterocyclic amines and N2-hydroxy-PhIP inhibit ER alpha activation. We propose that the mechanism for the tissue-specific carcinogenicity seen in the rat breast tumors and the presumptive human breast cancer associated with the consumption of well-done meat maybe mediated by this receptor activation. C1 Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94551 USA. NCI, Canc Res Ctr, NIH, Bethesda, MD 20892 USA. RP Kulp, KS (reprint author), Lawrence Livermore Natl Lab, Biosci Directorate, 7000 E Ave,Mail Code L-452, Livermore, CA 94551 USA. EM Kulp2@llnl.gov FU NCI NIH HHS [CA55861] NR 58 TC 23 Z9 23 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0893-228X J9 CHEM RES TOXICOL JI Chem. Res. Toxicol. PD OCT PY 2005 VL 18 IS 10 BP 1528 EP 1536 DI 10.1021/tx0501031 PG 9 WC Chemistry, Medicinal; Chemistry, Multidisciplinary; Toxicology SC Pharmacology & Pharmacy; Chemistry; Toxicology GA 976NM UT WOS:000232740300006 PM 16533016 ER PT J AU Boldyrev, AI Wang, LS AF Boldyrev, AI Wang, LS TI All-metal aromaticity and antiaromaticity SO CHEMICAL REVIEWS LA English DT Review ID ELECTRON LOCALIZATION FUNCTION; MULTIPLY-CHARGED ANIONS; MOLECULAR-ORBITAL THEORY; COUPLED-CLUSTER SINGLES; AB-INITIO CALCULATIONS; RAY CRYSTAL-STRUCTURE; B-B DISTANCES; PHOTOELECTRON-SPECTROSCOPY; SIGMA-AROMATICITY; ALKALI-METAL C1 Utah State Univ, Dept Chem & Biochem, Logan, UT 84322 USA. Washington State Univ, Dept Phys, Richland, WA 99354 USA. Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99354 USA. Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99354 USA. RP Utah State Univ, Dept Chem & Biochem, Logan, UT 84322 USA. EM boldyrev@cc.usu.edu; ls.wang@pnl.gov RI Boldyrev, Alexander/C-5940-2009 OI Boldyrev, Alexander/0000-0002-8277-3669 NR 262 TC 329 Z9 331 U1 7 U2 72 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0009-2665 EI 1520-6890 J9 CHEM REV JI Chem. Rev. PD OCT PY 2005 VL 105 IS 10 BP 3716 EP 3757 DI 10.1021/cr030091t PG 42 WC Chemistry, Multidisciplinary SC Chemistry GA 976TC UT WOS:000232755200010 PM 16218565 ER PT J AU Bair, R Banicescu, I Parashar, M AF Bair, R Banicescu, I Parashar, M TI Guest editorial on Challenges of Large Applications in Distributed Environments (CLADE) SO CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS LA English DT Editorial Material C1 Argonne Natl Lab, Argonne, IL 60439 USA. Mississippi State Univ, Mississippi State, MS 39762 USA. Rutgers State Univ, Piscataway, NJ 08855 USA. RP Bair, R (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1386-7857 J9 CLUSTER COMPUT JI Cluster Comput. PD OCT PY 2005 VL 8 IS 4 BP 241 EP 242 DI 10.1007/s10586-005-4091-5 PG 2 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA 994BJ UT WOS:000234004500001 ER PT J AU Myers, JD Allison, TC Bittner, S Didier, B Frenklach, M Green, WH Ho, YL Hewson, J Koegler, W Lansing, C Leahy, D Lee, M McCoy, R Minkoff, M Nijsure, S Von Laszewski, G Montoya, D Oluwole, L Pancerella, C Pinzon, R Pitz, W Rahn, LA Ruscic, B Schuchardt, K Stephan, E Wagner, A Windus, T Yang, C AF Myers, JD Allison, TC Bittner, S Didier, B Frenklach, M Green, WH Ho, YL Hewson, J Koegler, W Lansing, C Leahy, D Lee, M McCoy, R Minkoff, M Nijsure, S Von Laszewski, G Montoya, D Oluwole, L Pancerella, C Pinzon, R Pitz, W Rahn, LA Ruscic, B Schuchardt, K Stephan, E Wagner, A Windus, T Yang, C TI A collaborative informatics infrastructure for multi-scale science SO CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS LA English DT Article; Proceedings Paper CT International Workshop on Challenges of Large Applications in Distributed Environments CY 2004 CL Honolulu, HI DE collaboratory; knowledge grid; provenance; multi-scale data; system science; community data; cyberenvironment AB The Collaboratory for Multi-scale Chemical Science (CMCS) is developing a powerful informatics-based approach to synthesizing multi-scale information in support of systems-based research and is applying it within combustion science. An open source multi-scale informatics toolkit is being developed that addresses a number of issues core to the emerging concept of knowledge grids including provenance tracking and lightweight federation of data and application resources into cross-scale information flows. The CMCS portal is currently in use by a number of high-profile pilot groups and is playing a significant role in enabling their efforts to improve and extend community maintained chemical reference information. C1 Natl Ctr Supercomp Applicat, Champaign, IL 61820 USA. NIST, Gaithersburg, MD 20899 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. NIST, Gaithersburg, MD 20899 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Sandia Natl Labs, Livermore, CA 94551 USA. Argonne Natl Lab, Argonne, IL 60439 USA. MIT, Cambridge, MA 02139 USA. RP Myers, JD (reprint author), Natl Ctr Supercomp Applicat, Champaign, IL 61820 USA. EM jimmyers@ncsa.uiuc.edu RI Green, William/C-9684-2012; von Laszewski, Gregor/C-2808-2012; Ruscic, Branko/A-8716-2008; OI Green, William/0000-0003-2603-9694; von Laszewski, Gregor/0000-0001-9558-179X; Ruscic, Branko/0000-0002-4372-6990; Rahn, Larry/0000-0002-4793-1158; Stephan, Eric/0000-0002-8155-6806; Myers, James/0000-0001-8462-650X NR 23 TC 11 Z9 13 U1 0 U2 6 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1386-7857 J9 CLUSTER COMPUT JI Cluster Comput. PD OCT PY 2005 VL 8 IS 4 BP 243 EP 253 DI 10.1007/s10586-005-4092-4 PG 11 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA 994BJ UT WOS:000234004500002 ER PT J AU Otoo, E Rotem, D Shoshani, A AF Otoo, E Rotem, D Shoshani, A TI Impact of admission and cache replacement policies on response times of jobs on data grids SO CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS LA English DT Article; Proceedings Paper CT 2nd International Workshop on Challenges of Large Applications in Distributed Environments (CLADE 2004) CY JUN 07, 2004 CL Honolulu, HI SP IEEE, US DOE, Off Sci, Natl Sci Fdn, Agronne Natl Lab DE caching; data grid; job scheduling; storage resource manager AB Caching techniques have been used widely to improve the performance gaps of storage hierarchies in computing systems. Little is known about the impact of policies on the response times of jobs that access and process very large files in data grids, particularly when data and computations on the data have to be co-located on the same host. In data intensive applications that access large data files over wide area network environment, such as data-grids, the combination of policies for job servicing (or scheduling), caching and cache replacement can significantly impact the performance of grid jobs. We present preliminary results of a simulation study that combines an admission policy with a cache replacement policy when servicing jobs submitted to a storage resource manager. The results show that, in comparison to a first come first serve policy, the response times of jobs are significantly improved, for practical limits of disk cache sizes, when the jobs that are back-logged to access the same files are taken into consideration in scheduling the next file to be retrieved into the disk cache. Not only are the response times of jobs improved, but also the metric measures for caching policies, such as the hit ratio and the average cost per retrieval, are improved irrespective of the cache replacement policy used. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Otoo, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron,MS 50B-3238, Berkeley, CA 94720 USA. EM ekw@hpcrd.lbl.gov; D_Rotem@lbl.gov; Shoshani@lbl.gov NR 14 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1386-7857 EI 1573-7543 J9 CLUSTER COMPUT JI Cluster Comput. PD OCT PY 2005 VL 8 IS 4 BP 293 EP 303 DI 10.1007/s10586-005-4096-0 PG 11 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA 994BJ UT WOS:000234004500006 ER PT J AU Keahey, K Papka, ME Peng, Q Schissel, D Abla, G Araki, T Burruss, J Feibush, E Lane, P Klasky, S Leggett, T McCune, D Randerson, L AF Keahey, K Papka, ME Peng, Q Schissel, D Abla, G Araki, T Burruss, J Feibush, E Lane, P Klasky, S Leggett, T McCune, D Randerson, L TI Grid support for collaborative control room in fusion science SO CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS LA English DT Article; Proceedings Paper CT International Workshop on Challenges of Large Applications in Distributed Environments CY 2004 CL Honolulu, HI ID MDSPLUS AB The National Fusion Collaboratory project seeks to enable fusion scientists to exploit Grid capabilities in support of experimental science. To this end we are exploring the concept of a collaborative control room that harnesses Grid and collaborative technologies to provide an environment in which remote experimental devices, codes, and expertise can interact in real time during an experiment. This concept has the potential to make fusion experiments more efficient by enabling researchers to perform more analysis and by engaging more expertise from a geographically distributed team of scientists and resources. As the realities of software development, talent distribution, and budgets increasingly encourage pooling resources and specialization, we see such environments as a necessary tool for future science. In this paper, we describe an experimental mock-up of a remote interaction with the DIII-D control room. The collaborative control room was demonstrated at SC03 and later reviewed at an international ITER Grid Workshop. We describe how the combined effect of various technologies-collaborative, visualization, and Grid-can be used effectively in experimental science. Specifically, we describe the Access Grid, experimental data presentation tools, and agreement-based resource management and workflow systems enabling time-bounded end-to-end application execution. We also report on FusionGrid services whose use during the fusion experimental cycle became possible for the first time thanks to this technology, and we discuss its potential use in future fusion experiments. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Gen Atom Co, San Diego, CA 92186 USA. NEC Corp Ltd, Internet Syst Res Labs, Kanagawa 2168555, Japan. Gen Atom Co, San Diego, CA 92186 USA. Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. RP Keahey, K (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 22 TC 1 Z9 1 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1386-7857 J9 CLUSTER COMPUT JI Cluster Comput. PD OCT PY 2005 VL 8 IS 4 BP 305 EP 311 DI 10.1007/s10586-005-4097-z PG 7 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA 994BJ UT WOS:000234004500007 ER PT J AU Murphy, JJ Shaddix, CR AF Murphy, JJ Shaddix, CR TI Influence of scattering and probe-volume heterogeneity on soot measurements using optical pyrometry SO COMBUSTION AND FLAME LA English DT Article DE two-color pyrometry; soot; optical properties ID TURBULENT-DIFFUSION FLAMES; NEAR-INFRARED SPECTRUM; OVERFIRE SOOT; TEMPERATURE; FRACTION; EXTINCTION; RADIATION; MEDIA; FIRES AB The equations describing radiative emission from soot are reexamined in light of recent measurements showing that scattering by aggregated soot particles is not negligible in the near-infrared region. When measuring soot temperature and concentration using two-color optical pyrometry, emission is usually best approximated by I-lambda(s) = [1 - exp(-k(a,lambda) s)]I-b,I-lambda, using an absorption coefficient, k(a,lambda), determined while taking into account the effects of scattering. This equation gives good results in most practical measurement environments, where scattering-induced contributions to the measured light intensity are approximately balanced by scattering losses. It is also shown that probe-volume heterogeneity biases temperature measurements made with two-color pyrometry toward the higher temperatures in the probe volume. Soot concentration measurements are also biased, reflecting the concentration of hot soot in the probe volume, rather than the mean concentration of hot and cold soot. Methods to minimize these effects are suggested. (c) 2005 The Combustion Institute. Published by Elsevier Inc. All rights reserved. C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. RP Murphy, JJ (reprint author), Aerosp Corp, POB 92957, Los Angeles, CA 90009 USA. EM jeffrey.j.murphy@aero.org; crshadd@sandia.gov NR 36 TC 29 Z9 29 U1 0 U2 6 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD OCT PY 2005 VL 143 IS 1-2 BP 1 EP 10 DI 10.1016/j.combustflame.2004.09.003 PG 10 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA 974BH UT WOS:000232565800001 ER PT J AU Qi, F McIlroy, A AF Qi, F McIlroy, A TI Identifying combustion intermediates via tunable vacuum ultraviolet photoionization mass spectrometry SO COMBUSTION SCIENCE AND TECHNOLOGY LA English DT Article DE combustion diagnostic; vacuum ultraviolet photoionization; photoionization efficiency spectroscopy; molecular-beam mass spectrometry ID ONE-DIMENSIONAL FLAMES; LASER; SPECTROSCOPY; DISTORTIONS; NAPHTHALENE; (CH2)-C-1; ENERGIES; SPECTRUM; BENZENE AB The analysis of complex, reactive mixtures in flames remains challenging, but the need to understand the formation mechanisms of pollutants such as polyaromatic hydrocarbons ( PAH) and soot drives innovation in this area. We have used molecular beam sampling and single-photon, tunable vacuum ultraviolet (VUV) ionization mass spectrometry to spatially resolve and identify the isomers of PAH precursors in low-pressure, one-dimensional, laminar H-2/1,3-butadiene/ O-2/Ar flames. We have measured the photoionization efficiency spectra of many species in these flames to obtain their ionization thresholds. By comparison with literature ionization energies, the isomers can be uniquely identified. The approach shows promise as a universal probe of PAHs and their precursors from combustion processes. C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. RP McIlroy, A (reprint author), Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. EM amcilr@sandia.gov RI Qi, Fei/A-3722-2012 NR 32 TC 14 Z9 17 U1 3 U2 19 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0010-2202 J9 COMBUST SCI TECHNOL JI Combust. Sci. Technol. PD OCT PY 2005 VL 177 IS 10 BP 2021 EP 2037 DI 10.1080/00102200590956704 PG 17 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical SC Thermodynamics; Energy & Fuels; Engineering GA 969AW UT WOS:000232206800008 ER PT J AU Freedman, VL Saripalli, KP Bacon, DH Meyer, PD AF Freedman, VL Saripalli, KP Bacon, DH Meyer, PD TI Implementation of biofilm permeability models for mineral reactions in saturated porous media SO COMPUTERS & GEOSCIENCES LA English DT Article DE permeability; geochemical models; hydrogeology; numerical models ID HYDROTHERMAL SYSTEMS; DISSOLUTION; POROSITY; FLOW; PRECIPITATION AB An approach based on continuous biofilm models is proposed for modeling permeability changes due to mineral precipitation and dissolution in saturated porous media. In contrast to the biofilm approach, implementation of the film depositional models within a reactive transport code requires a time-dependent calculation of the mineral films in the pore space. Two different methods for this calculation are investigated. The first method assumes a direct relationship between changes in mineral radii (i.e., surface area) and changes in the pore space. In the second method, an effective change in pore radii is calculated based on the relationship between permeability and grain size. Porous media permeability is determined by coupling the film permeability models (Mualem and Childs and Collis-George) to a volumetric model that incorporates both mineral density and reactive surface area. Results from single mineral dissolution and single mineral precipitation simulations provide reasonable estimates of permeability, though they predict smaller permeability changes relative to the Kozeny and Carmen model. However, a comparison of experimental and simulated data show that the Mualem film model is the only one that can replicate the oscillations in permeability that occur as a result of simultaneous dissolution and precipitation reactions occurring within the porous media. (C) 2005 Published by Elsevier Ltd. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Freedman, VL (reprint author), Pacific NW Natl Lab, POB 999,MSIN K9-36, Richland, WA 99352 USA. EM vicky.freedman@pnl.gov OI Bacon, Diana/0000-0001-9122-5333 NR 18 TC 1 Z9 1 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0098-3004 J9 COMPUT GEOSCI-UK JI Comput. Geosci. PD OCT PY 2005 VL 31 IS 8 BP 968 EP 977 DI 10.1016/j.cageo.2005.02.003 PG 10 WC Computer Science, Interdisciplinary Applications; Geosciences, Multidisciplinary SC Computer Science; Geology GA 964XL UT WOS:000231914200003 ER PT J AU Schultz, E AF Schultz, E TI Aligning disaster recovery and security incident response SO COMPUTERS & SECURITY LA English DT Editorial Material C1 Univ Calif Berkeley Lab, CISSP, CISM, Berkeley, CA 94720 USA. RP Schultz, E (reprint author), Univ Calif Berkeley Lab, CISSP, CISM, Berkeley, CA 94720 USA. EM eeshultz@sbcglobal.net NR 0 TC 0 Z9 0 U1 1 U2 3 PU ELSEVIER ADVANCED TECHNOLOGY PI OXFORD PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0167-4048 J9 COMPUT SECUR JI Comput. Secur. PD OCT PY 2005 VL 24 IS 7 BP 505 EP 506 DI 10.1016/j.cose.2005.09.001 PG 2 WC Computer Science, Information Systems SC Computer Science GA 983LF UT WOS:000233232400001 ER PT J AU Hua, F Mon, K Pasupathi, P Gordon, G Shoesmith, D AF Hua, F Mon, K Pasupathi, P Gordon, G Shoesmith, D TI A review of corrosion of titanium grade 7 and other titanium alloys in nuclear waste repository environments SO CORROSION LA English DT Review DE general corrosion; hydrogen-induced cracking; localized corrosion; palladium; passive film; repository environments; stress corrosion cracking; titanium alloys ID ANODIC OXIDE-FILMS; PITTING CORROSION; GAMMA-RADIATION; BIOMATERIAL APPLICATIONS; HYDROGEN-PEROXIDE; STAINLESS-STEEL; BENTONITE CLAY; SULFURIC-ACID; FLUORIDE-ION; BEHAVIOR AB Titanium alloy degradation modes are reviewed in relation to their performance in repository environments. General corrosion, localized corrosion, stress corrosion cracking, hydrogen-induced cracking, microbiologically influenced corrosion, and radiation-assisted corrosion of 71 alloys are considered. With respect to the Ti Grade 7 drip shields selected for emplacement in the repository at Yucca Mountain, general corrosion. hydrogen-induced cracking, and radiation-assisted corrosion either do not initiate or propagate sufficiently fast over a 10,000-year time frame in likely repository environments to cause penetration of the drip shield. Stress corrosion cracking (in the absence of disruptive events) is of no consequence to barrier performance; and localized corrosion and microbiologically influenced corrosion are not expected to occur. To facilitate the discussion, Ti Grades 2, 5, 7, 9, 11, 12, 16, 17, 18, and 24 are included in this review. C1 US DOE, Yucca Mt Project M&O Bechtel SAIC Co LLC, Las Vegas, NV 89144 USA. US DOE, Yucca Mt Project M&O Framatome ANP, Las Vegas, NV 89144 USA. Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada. RP Hua, F (reprint author), US DOE, Yucca Mt Project M&O Bechtel SAIC Co LLC, 1180 Town Ctr Dr, Las Vegas, NV 89144 USA. EM fred_hua@ymp.gov NR 140 TC 34 Z9 35 U1 1 U2 16 PU NATL ASSN CORROSION ENG PI HOUSTON PA 1440 SOUTH CREEK DRIVE, HOUSTON, TX 77084-4906 USA SN 0010-9312 J9 CORROSION JI Corrosion PD OCT PY 2005 VL 61 IS 10 BP 987 EP 1003 PG 17 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 974VP UT WOS:000232619800008 ER PT J AU Seed, J Carney, EW Corley, RA Crofton, KM DeSesso, JM Foster, PMD Kavlock, R Kimmel, G Klaunig, J Meek, ME Preston, RJ Slikker, W Tabacova, S Williams, GM Wiltse, J Zoeller, RT Fenner-Crisp, P Patton, DE AF Seed, J Carney, EW Corley, RA Crofton, KM DeSesso, JM Foster, PMD Kavlock, R Kimmel, G Klaunig, J Meek, ME Preston, RJ Slikker, W Tabacova, S Williams, GM Wiltse, J Zoeller, RT Fenner-Crisp, P Patton, DE TI Overview: Using mode of action and life stage information to evaluate the human relevance of animal toxicity data SO CRITICAL REVIEWS IN TOXICOLOGY LA English DT Review DE developmental window; human relevance framework; noncancer modes of action; risk assessment ID FRAMEWORK AB A complete mode of action human relevance analysis-as distinct from mode of action (MOA) analysis alone-depends on robust information on the animal MOA, as well as systematic comparison of the animal data with corresponding information from humans. In November 2003, the International Life Sciences Institute's Risk Science Institute (ILSI RSI) published a 2-year study using animal and human MOA information to generate a four-part Human Relevance Framework (HRF) for systematic and transparent analysis of MOA data and information. Based mainly on non-DNA-reactive carcinogens, the HRF features a "concordance" analysis of MOA information from both animal and human sources, with a focus on determining the appropriate role for each MOA data set in human risk assessment. With MOA information increasingly available for risk assessment purposes, this article illustrates the further applicability of the HRF for reproductive, developmental, neurologic, and renal endpoints, as well as cancer. Based on qualitative and quantitative MOA considerations, the MOA/human relevance analysis also contributes to identifying data needs and issues essential for the dose-response and exposure assessment steps in the overall risk assessment. C1 US EPA, Washington, DC 20460 USA. Dow Chem Co USA, Midland, MI 48674 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. US EPA, Res Triangle Pk, NC 27711 USA. Mitretek Syst, Falls Church, VA USA. NIEHS, Res Triangle Pk, NC 27709 USA. Indiana Univ, Sch Med, Indianapolis, IN USA. Hlth Canada, Ottawa, ON K1A 0L2, Canada. Natl Ctr Toxicol Res, Jefferson, AR 72079 USA. US FDA, Rockville, MD 20857 USA. New York Med Coll, Valhalla, NY 10595 USA. RP Patton, DE (reprint author), ILSI Risk Sci Inst, 1 Thomas Circle NW, Washington, DC 20005 USA. EM dpatton@ilsi.org RI Crofton, Kevin/J-4798-2015 OI Crofton, Kevin/0000-0003-1749-9971 NR 7 TC 48 Z9 50 U1 0 U2 4 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1040-8444 J9 CRIT REV TOXICOL JI Crit. Rev. Toxicol. PD OCT-NOV PY 2005 VL 35 IS 8-9 BP 663 EP 672 DI 10.1080/10408440591007133 PG 10 WC Toxicology SC Toxicology GA 993UH UT WOS:000233980100001 ER PT J AU Corley, RA Meek, ME Carney, EW AF Corley, RA Meek, ME Carney, EW TI Mode of action: Oxalate crystal-induced renal tubule degeneration and glycolic acid-induced dysmorphogenesis - Renal and developmental effects of ethylene glycol SO CRITICAL REVIEWS IN TOXICOLOGY LA English DT Review DE developmental toxicity; glycolate; human relevance; oxalate; renal toxicity ID SPRAGUE-DAWLEY RATS; HOMEOTIC TRANSFORMATIONS; PRIMARY HYPEROXALURIA; SUBCHRONIC TOXICITY; PARA-AMINOHIPPURATE; PLASMA DISPOSITION; DIETHYLENE GLYCOL; CALCIUM-OXALATE; CD-1 MICE; CLEARANCE AB Ethylene glycol can cause both renal and developmental toxicity, with metabolism playing a key role in the mode of action (MOA) for each form of toxicity. Renal toxicity is ascribed to the terminal metabolite oxallic acid, which precipitates in the kidney in the form of calcium oxalate crystals and is believed to cause physical damage to the renal tubules. The human relevance of the renal toxicity of ethylene glycol is indicated by the similarity between animals and humans of metabolic pathways, the observation of renal oxalate crystals in toxicity studies in experimental animals and human poisonings, and cases of human kidney and bladder stones related to dietary oxalates and oxallate precursors. High-dose gavage exposures to ethylene glycol also cause axial skeletal defects in rodents (but not rabbits), with the intermediary metabolite, glycolic acid, identified as the causative agent. However, the mechanism by which glycolic acid perturbs development has not been investigated sufficiently to develop a plausible hypothesis of mode of action, nor have any cases of ethylene glycol-induced developmental effects been reported in humans. Given this, and the variations in sensitivity between animal species in response, the relevance to humans of ethylene glycol-induced developmental toxicity in animals is unknown at this time. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Hlth Canada, Ottawa, ON K1A 0L2, Canada. Dow Chem Co USA, Midland, MI 48674 USA. RP Corley, RA (reprint author), Pacific NW Natl Lab, POB 999,Mail Stop P7-59, Richland, WA 99352 USA. EM rick.corley@pnl.gov NR 100 TC 19 Z9 19 U1 0 U2 2 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1040-8444 J9 CRIT REV TOXICOL JI Crit. Rev. Toxicol. PD OCT-NOV PY 2005 VL 35 IS 8-9 BP 691 EP 702 DI 10.1080/10408440591007322 PG 12 WC Toxicology SC Toxicology GA 993UH UT WOS:000233980100004 PM 16417036 ER PT J AU Boon, EM Marletta, MA AF Boon, EM Marletta, MA TI Ligand discrimination in soluble guanylate cyclase and the H-NOX family of heme sensor proteins SO CURRENT OPINION IN CHEMICAL BIOLOGY LA English DT Review ID NITRIC-OXIDE; MYOCARDIAL-FUNCTION; CARBON-MONOXIDE; MYOGLOBIN; DOMAINS; SYSTEM; MOIETY; CO AB Soluble guanylate cyclases (sGCs) are eukaryotic heme sensor proteins that selectively bind NO in the presence of a large excess of the similar diatomic gas, O-2; this discrimination is essential for NO signaling. Recent discoveries place sGC in the H-NOX (heme nitric oxide and/or oxygen binding domain) family that includes bacterial proteins. The defining characteristic of this family is that some H-NOX proteins tightly bind O-2 wheras others, such as sGC, show no measurable affinity for O-2. A molecular basis for this ligand selectivity has now been established. A distal pocket tyrosine is requisite for O-2 binding and is used to kinetically distinguish between NO and O-2, In the absence of this tyrosine, the O-2 dissociation rate is so fast that the O-2 complex is never formed, whereas the rate of NO dissociation remains essentially unchanged, thus providing discrimination. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94705 USA. Univ Calif Berkeley, Dept Mol & Cellular Biol, Berkeley, CA 94705 USA. Univ Calif Berkeley, Div Phys Biosci, Lawrence Berkeley Natl Lab, Berkeley, CA 94705 USA. RP Marletta, MA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94705 USA. EM marletta@berkeley.edu OI Boon, Elizabeth/0000-0003-1891-839X NR 21 TC 63 Z9 63 U1 1 U2 11 PU CURRENT BIOLOGY LTD PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 1367-5931 J9 CURR OPIN CHEM BIOL JI Curr. Opin. Chem. Biol. PD OCT PY 2005 VL 9 IS 5 BP 441 EP 446 DI 10.1016/j.cbpa.2005.08.015 PG 6 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA 976DM UT WOS:000232713000004 PM 16125437 ER PT J AU Taboada-Serrano, P Chin, CJ Yiacoumi, S Tsouris, C AF Taboada-Serrano, P Chin, CJ Yiacoumi, S Tsouris, C TI Modeling aggregation of colloidal particles SO CURRENT OPINION IN COLLOID & INTERFACE SCIENCE LA English DT Review DE particle aggregation; magnetic particle aggregation; colloidal phase transition; population balance; DLVO theory ID MONTE-CARLO-SIMULATION; POPULATION-BALANCE EQUATION; INDUCED FLOCCULATION; MAGNETIC PARTICLES; FRACTAL DIMENSION; STABILITY; SHEAR; DISPERSIONS; COAGULATION; DYNAMICS AB The study of aggregation of colloidal particles involves assessment of the thermodynamics and kinetics of the process and the characteristics of the phase formed. In this article, recent contributions to the understanding of aggregation are discussed from two different perspectives: (1) developments following the classical treatment and (2) new molecular approaches. (C) 2005 Elsevier Ltd. All rights reserved. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA. Natl Cent Univ, Grad Inst Environm Engn, Jungli City, Taoyuan, Taiwan. RP Tsouris, C (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM gtg727c@prism.gatech.edu; cjchin@ncucn.edu.tw; sotira.yiacoumi@ce.gatech.edu; tsourisc@ornl.gov RI Taboada-Serrano, Patrica/F-4745-2012; Tsouris, Costas/C-2544-2016 OI Tsouris, Costas/0000-0002-0522-1027 NR 55 TC 33 Z9 33 U1 6 U2 33 PU ELSEVIER SCIENCE LONDON PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 1359-0294 J9 CURR OPIN COLLOID IN JI Curr. Opin. Colloid Interface Sci. PD OCT PY 2005 VL 10 IS 3-4 BP 123 EP 132 DI 10.1016/j.cocis.2005.07.003 PG 10 WC Chemistry, Physical SC Chemistry GA 985NZ UT WOS:000233386100007 ER PT J AU Fu, AH Gu, WW Larabell, C Alivisatos, AP AF Fu, AH Gu, WW Larabell, C Alivisatos, AP TI Semiconductor nanocrystals for biological imaging SO CURRENT OPINION IN NEUROBIOLOGY LA English DT Review ID QUANTUM DOTS; IN-VIVO; CDSE NANOCRYSTALS; LIVE CELLS; FLUORESCENCE; CYTOTOXICITY; MICROSCOPY; RECEPTORS; TRACKING; NANOPARTICLES AB Conventional organic fluorophores suffer from poor photo stability, narrow absorption spectra and broad emission spectra. Semiconductor nanocrystals, however, are highly photo-stable with broad absorption spectra and narrow size-tunable emission spectra. Recent advances in the synthesis of these materials have resulted in the generation of bright, sensitive, extremely photo-stable and biocompatible semiconductor fluorophores. Commercial availability facilitates their application in a variety of unprecedented biological experiments, including multiplexed cellular imaging, long-term in vitro and in vivo labeling, deep tissue structure mapping and single particle investigation of dynamic cellular processes. Semiconductor nanocrystals are one of the first examples of nanotechnology enabling a new class of biomedical applications. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif San Francisco, Dept Anat, San Francisco, CA 94143 USA. Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Alivisatos, AP (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM alivis@uclink4.berkeley.edu RI Alivisatos , Paul /N-8863-2015 OI Alivisatos , Paul /0000-0001-6895-9048 NR 45 TC 118 Z9 122 U1 3 U2 42 PU CURRENT BIOLOGY LTD PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 0959-4388 J9 CURR OPIN NEUROBIOL JI Curr. Opin. Neurobiol. PD OCT PY 2005 VL 15 IS 5 BP 568 EP 575 DI 10.1016/j.conb.2005.08.004 PG 8 WC Neurosciences SC Neurosciences & Neurology GA 979LM UT WOS:000232943500012 PM 16150591 ER PT J AU Guzowski, JF Timlin, JA Roysam, B McNaughton, BL Worley, PF Barnes, CA AF Guzowski, JF Timlin, JA Roysam, B McNaughton, BL Worley, PF Barnes, CA TI Mapping behaviorally relevant neural circuits with immediate-early gene expression SO CURRENT OPINION IN NEUROBIOLOGY LA English DT Review ID MESSENGER-RNA; SYNAPTIC ACTIVITY; QUANTUM-DOT; HIPPOCAMPAL; EXPERIENCE; ARC; CORTEX; CA3; MICROSCOPY; ENSEMBLES AB Immediate-early genes have gained widespread popularity as activity markers for mapping neuronal circuits involved in specific behaviors in many different species. In situ immediate early gene detection methods provide cellular level resolution, a major benefit for mapping neuronal networks. Recent advances using fluorescence in situ hybridization also afford temporal resolution, enabling within-animal activity maps for two distinct behaviors. Moreover, use of transgenic mice with fluorescent reporter proteins driven by immediate early gene promoters is enabling repeated measurements, over long time scales, of cortical activity within the same animal. These methodological innovations, coupled with recent advances in fluorescence imaging and probe development, will enable large scale mapping of behaviorally relevant circuits with temporal and three-dimensional spatial resolution in experimental animals. C1 Univ New Mexico, Hlth Sci Ctr, Dept Neurosci, Albuquerque, NM 87131 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Rensselaer Polytech Inst, ECSE Dept, Troy, NY 12180 USA. Univ Arizona, Arizona Res Labs, Div Neural Syst Memory & Aging, Dept Psychol, Tucson, AZ 85724 USA. Univ Arizona, Arizona Res Labs, Div Neural Syst Memory & Aging, Dept Neurol, Tucson, AZ 85724 USA. Johns Hopkins Sch Med, Dept Neurosci, Baltimore, MD 21205 USA. RP Guzowski, JF (reprint author), Univ New Mexico, Hlth Sci Ctr, Dept Neurosci, Albuquerque, NM 87131 USA. EM jguzowski@salud.unm.edu OI Timlin, Jerilyn/0000-0003-2953-1721 FU NIA NIH HHS [AG023309, AG09219]; NIMH NIH HHS [MH01565, MH060123] NR 30 TC 177 Z9 182 U1 2 U2 31 PU CURRENT BIOLOGY LTD PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 0959-4388 J9 CURR OPIN NEUROBIOL JI Curr. Opin. Neurobiol. PD OCT PY 2005 VL 15 IS 5 BP 599 EP 606 DI 10.1016/j.conb.2005.08.018 PG 8 WC Neurosciences SC Neurosciences & Neurology GA 979LM UT WOS:000232943500016 PM 16150584 ER PT J AU Le Gros, MA McDermott, G Larabell, CA AF Le Gros, MA McDermott, G Larabell, CA TI X-ray tomography of whole cells SO CURRENT OPINION IN STRUCTURAL BIOLOGY LA English DT Review ID PROTEIN LOCALIZATION; BIOLOGICAL SPECIMENS; COMPUTED-TOMOGRAPHY; ELECTRON-MICROSCOPY; RESOLUTION; MICROTOMOGRAPHY; VISUALIZATION; IMAGES AB X-ray tomography has been shown to provide insights into the internal structure of whole cells that can't be obtained by any other means. With recent,advances in instrumentation and the advent of automated cryogenic sample stages, it has become possible to collect isotropic tomographic data from radiation-sensitive cells and to compute reconstructions with a high degree of fidelity to a resolution of 50 nm. The new generation of X-ray optics will extend this resolution limit to 15 nm or better. The development of X-ray tomography of whole cells generates opportunities to study cells, and cellular processes, in a completely new way. C1 Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. Univ Calif San Francisco, Dept Anat, San Francisco, CA 94143 USA. RP Larabell, CA (reprint author), Lawrence Berkeley Natl Lab, Phys Biosci Div, 1 Cyclotron Rd,MS 6-2100, Berkeley, CA 94720 USA. EM larabel@itsa.ucsf.edu FU NCRR NIH HHS [P41 RR019664-02]; NIGMS NIH HHS [GM63948] NR 30 TC 112 Z9 114 U1 4 U2 31 PU CURRENT BIOLOGY LTD PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 0959-440X J9 CURR OPIN STRUC BIOL JI Curr. Opin. Struct. Biol. PD OCT PY 2005 VL 15 IS 5 BP 593 EP 600 DI 10.1016/j.sbi.2006.08.008 PG 8 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 979MN UT WOS:000232946200016 PM 16153818 ER PT J AU Cram, LS Arndt-Jovin, D AF Cram, LS Arndt-Jovin, D TI Mack Jett Fulwyler, pioneer of flow Cytometry and flow sorting (1936-2001) SO CYTOMETRY PART A LA English DT Biographical-Item C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. Max Planck Inst Biophys Chem, D-37077 Gottingen, Germany. RP Cram, LS (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. NR 0 TC 2 Z9 2 U1 0 U2 2 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1552-4922 J9 CYTOM PART A JI Cytom. Part A PD OCT PY 2005 VL 67A IS 2 BP 53 EP 54 DI 10.1002/cyto.a.20176 PG 2 WC Biochemical Research Methods; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 970IT UT WOS:000232299300002 PM 16163685 ER PT J AU Fulwyler, CH Fulwyler, CJ Fulwyler, RM Fulwyler, JB Arndt-Jovin, D Jovin, T Auer, B Bigos, M Cram, S Damjanovich, S Gray, J Herzenberg, L Hyun, B Jett, J Krishan, A Marton, L McHugh, T Melamed, M Rigler, R Shapiro, H Shoor, B Steinkamp, J Staiano-Coico, L Stites, D Sweet, R Szollosi, J Van Dilla, M Wheeless, L AF Fulwyler, CH Fulwyler, CJ Fulwyler, RM Fulwyler, JB Arndt-Jovin, D Jovin, T Auer, B Bigos, M Cram, S Damjanovich, S Gray, J Herzenberg, L Hyun, B Jett, J Krishan, A Marton, L McHugh, T Melamed, M Rigler, R Shapiro, H Shoor, B Steinkamp, J Staiano-Coico, L Stites, D Sweet, R Szollosi, J Van Dilla, M Wheeless, L TI Personal remembrances SO CYTOMETRY PART A LA English DT Editorial Material C1 Max Planck Inst Biophys Chem, D-37077 Gottingen, Germany. Gladstone Inst, San Francisco, CA USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Debrecen, H-4012 Debrecen, Hungary. Lawrence Berkeley Natl Lab, Berkeley, CA USA. Univ Calif San Francisco, Lab Cell Anal, San Francisco, CA 94143 USA. SLIL Biomed Corp, Monona, WI USA. Univ Calif San Francisco, Med Ctr, San Francisco, CA 94143 USA. New York Med Coll, Valhalla, NY 10595 USA. Karolinska Inst, Stockholm, Sweden. Ctr Microbial Cytometry, W Newton, MA USA. Stanford Univ, Stanford, CA 94305 USA. Univ Rochester, Rochester, NY USA. RP Arndt-Jovin, D (reprint author), Max Planck Inst Biophys Chem, D-37077 Gottingen, Germany. RI Damjanovich, Sandor/A-9284-2011 NR 0 TC 0 Z9 0 U1 0 U2 4 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1552-4922 EI 1552-4930 J9 CYTOM PART A JI Cytom. Part A PD OCT PY 2005 VL 67A IS 2 BP 54 EP 60 PG 7 WC Biochemical Research Methods; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 970IT UT WOS:000232299300003 ER PT J AU Stewart, CC Woodring, ML Podniesinski, E Gray, B AF Stewart, CC Woodring, ML Podniesinski, E Gray, B TI Flow cytometer in the infrared: Inexpensive modifications to a commercial instrument SO CYTOMETRY PART A LA English DT Article DE flow cytometer; measurement of infrared excitation and emission; avalanche photodiode ID BIOLOGICAL CELLS; INVIVO TRACKING; PROLIFERATION; LYMPHOCYTES; PARTICLES; VOLUME AB Background: The application of molecules that fluoresce in the infrared (IR) region to measure cell products would be enhanced by a flow cytometer capable of measuring them. To our knowledge, none exist at this time. Accordingly, we have developed such an instrument. Methods: A Becton Dickinson LSR flow cytometer was modified to include a small 785-mn IR diode laser the size of a C cell battery with 44-mW output power. The instrument was modified further to accommodate this laser in addition to a 405-nm solid-state laser, a 488-nm air-cooled argon laser, and a 658-nm solid-state laser. Because the IR laser is dangerous to the eye, the laser beams were viewed for optical alignment using a CCD camera and video monitor. An avalanche photodiode was used in place of a photomultiplier tube because its detection sensitivity in the IR region is superior. Results: To assess performance, scatter and florescence measurements were made using microspheres that fluoresce in the IR region, and human leukocytes were stained with CD45 biotin followed by a streptavidin conjugated with an IR dye. An avalanche photodiode was 2.3 to 2.8 times more sensitive than a photomultiplier tube for detecting IR fluorescence. Cells stained with CD45 biotin and avidin conjugated with an IR dye could easily be resolved and their fluorescence quantified; there was virtually no autofluorescence. In addition, a lipophilic membrane dye that emits in the IR region was studied. HL60 cells were stained with this dye and they exhibited bright fluorescence intensity. Conclusion: A commercial instrument could be modified to accommodate an IR laser for exciting dyes that fluoresce in the IR region. This new capability will extend the range of fluorescence that can be measured by flow cytometry. (c) 2005 international Society for Analytical Cytology. C1 Roswell Pk Canc Inst, Low Flow Cytometry, Buffalo, NY 14263 USA. Pacific NW Lab, Richland, WA USA. PTI Res, Exton, PA USA. RP Stewart, CC (reprint author), Roswell Pk Canc Inst, Low Flow Cytometry, Buffalo, NY 14263 USA. EM stewarts@rpciflowcytometry.com FU NCI NIH HHS [P30 CA1605626SUBACC]; NCRR NIH HHS [R43 RR17126]; NIBIB NIH HHS [R44 EB00228] NR 22 TC 10 Z9 10 U1 0 U2 1 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 1552-4922 J9 CYTOM PART A JI Cytom. Part A PD OCT PY 2005 VL 67A IS 2 BP 104 EP 111 DI 10.1002/cyto.a.20166 PG 8 WC Biochemical Research Methods; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 970IT UT WOS:000232299300009 PM 16163692 ER PT J AU Baldocchi, RA Glynne, RJ Chin, K Kowbel, D Collins, C Mack, DH Gray, JW AF Baldocchi, RA Glynne, RJ Chin, K Kowbel, D Collins, C Mack, DH Gray, JW TI Design considerations for array CGH to oligonucleotide Arrays SO CYTOMETRY PART A LA English DT Article DE comparative genomic hybridization; microarrays; multiplex polymerase chain reaction; genomic amplification; single nucleotide polymorphism ID COMPARATIVE GENOMIC HYBRIDIZATION; COPY NUMBER VARIATION; MICROARRAY ANALYSIS; SEQUENCE; COMPLEX; CANCER; TUMOR AB Background: Representational oligonucleotide microarray analysis has been developed for detection of single nucleotide polymorphisms and/or for genome copy number changes. In this process, the intensity of hybridization to oligonucleotides arrays is increased by hybridizing a polymerase chain reaction (PCR)-amplified representation of reduced genomic. complexity However, hybridization to some oligonucleotides is not sufficiently high to allow precise analysis of that portion of the genome. Methods: In an effort to identify aspects of oligonucleotide hybridization affecting signal intensity, we explored the importance of the PCR product strand to which each oligonucleotide is homologous and the sequence of the array oligonucleotides. We accomplished this by hybridizing multiple PCR-amplified products to oligonucleotide arrays carrying two sense and two antisense 50-mer oligonucleotides for each PCR amplicon. Results: In some cases, hybridization intensity depended more strongly on the PCR amplicon strand (i.e., sense vs. antisense) than on the detection oligonucleotide sequence. in other cases, the oligonucleotide sequence seemed to dominate. Conclusion: Oligonucleotide arrays for analysis of DNA copy number or for single nucleotide polymorphism content should be designed to carry probes to sense and antisense strands of each PCR amplicon to ensure sufficient hybridization and signal intensity. (c) 2005 International Society for Analytical Cytology. C1 DakoCytomat Calif Inc, Carpinteria, CA 93013 USA. Univ Calif San Francisco, Ctr Canc, San Francisco, CA 94143 USA. Eos Biotechnol Inc, San Francisco, CA USA. Lawrence Berkeley Natl Lab, Berkeley, CA USA. Novartis Res Fdn, Genom Inst, San Diego, CA USA. Alta Partners, San Francisco, CA USA. RP Baldocchi, RA (reprint author), DakoCytomat Calif Inc, 6392 Via Real, Carpinteria, CA 93013 USA. EM russ.baldocchi@dakocytomation.com FU NCI NIH HHS [CA 64602, CA58207] NR 21 TC 6 Z9 8 U1 0 U2 3 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 1552-4922 J9 CYTOM PART A JI Cytom. Part A PD OCT PY 2005 VL 67A IS 2 BP 129 EP 136 DI 10.1002/cyto.a.20161 PG 8 WC Biochemical Research Methods; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 970IT UT WOS:000232299300012 PM 16163695 ER PT J AU Oh, H Thomas, RJ Leiseutre, BC Mount, TD AF Oh, H Thomas, RJ Leiseutre, BC Mount, TD TI A method for classifying offer strategies observed in an electricity market SO DECISION SUPPORT SYSTEMS LA English DT Article DE standardized agent; marginal cost offer agent; speculator; fair share; diffusion model AB The idea that large-scale generating units will operate at marginal cost when given the ability to offer their power for sale in a uniform price auction is at best wishful thinking. In fact, both real and experimental data show that the more uncertainty a supplier faces (e.g., load uncertainty, uncertainty of other suppliers, etc.), the more they will hedge their profits through higher than marginal cost offers and through withholding units if permitted. This makes predicting unit commitment and dispatch ahead of time difficult. This paper explores characteristics of software agents that were designed based on the outcome of human subject experiments on a uniform price auction with stochastic load. The agent behavior is compared to the behavior of the subjects. Both subject and agent behavior is classified based on the data. Differences and similarities are noted and explained. Based on the result of the simulation, a model was suggested to explain an offer submitted in deregulated markets based on double layer diffusion. (c) 2004 Elsevier B.V. All rights reserved. C1 Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA. Lawrence Bekeley Natl Lab, Berkeley, CA 94720 USA. Cornell Univ, Ithaca, NY 14853 USA. RP Oh, H (reprint author), Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA. EM hso1@cornell.edu; rjt1l@cornell.edu; BCLesieutre@lbl.gov; tdm2@cornell.edu NR 4 TC 1 Z9 1 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9236 J9 DECIS SUPPORT SYST JI Decis. Support Syst. PD OCT PY 2005 VL 40 IS 3-4 BP 449 EP 460 DI 10.1016/j.dss.2004.05.007 PG 12 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Operations Research & Management Science SC Computer Science; Operations Research & Management Science GA 973LN UT WOS:000232524300005 ER PT J AU Lesieutre, BC Thomas, RJ Mount, TD AF Lesieutre, BC Thomas, RJ Mount, TD TI Identification of load pockets and market power in electric power systems SO DECISION SUPPORT SYSTEMS LA English DT Article DE electricity markets; market power; spectral methods AB In this paper, we present a spectral method for the identification of load pockets and the application of practical techniques for the measurement of market power. Market power is a serious concern in electric energy markets, especially in the area of a load pocket. Common definitions for market power, which rely on a comparison between market prices and a so-called competitive price, are difficult to use in practice because the competitive price is not known when the market is not competitive. The competitive price cannot be computed from data naturally available to the market. Our technique focuses on the identification of participants with the ability to increase revenues by increasing prices, an ability not present in a competitive market. We then propose measures for quantifying the extent to which market power is being exercised. These measures can be computed from data available to the market; they are practical. We present results from a 30 bus, 6 generator system, which illustrates that generators in a load pocket have and can exploit joint market power. (c) 2004 Elsevier B.V All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA. RP Lesieutre, BC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd,MS 90R4000, Berkeley, CA 94720 USA. EM BCLesicutre@lbl.gov NR 12 TC 6 Z9 6 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9236 J9 DECIS SUPPORT SYST JI Decis. Support Syst. PD OCT PY 2005 VL 40 IS 3-4 BP 517 EP 528 DI 10.1016/j.dss.2004.09.010 PG 12 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Operations Research & Management Science SC Computer Science; Operations Research & Management Science GA 973LN UT WOS:000232524300012 ER PT J AU Newton, RL Davidson, JL Ice, GE Liu, W AF Newton, RL Davidson, JL Ice, GE Liu, W TI Synchrotron X-ray microdiffraction analysis of proton irradiated polycrystalline diamond films SO DIAMOND AND RELATED MATERIALS LA English DT Article DE diamond films; microdiffraction; synchrotron radiation; Microelectromechanical Systems (MEMS) ID RESIDUAL-STRESS; RAMAN; DIFFRACTION AB X-ray microdiffraction is a non-destructive technique that allows for depth-resolved, strain measurements with submicron spatial resolution. These capabilities make this technique promising for understanding the mechanical properties of MicroElectroMechancial Systems (MEMS). This investigation examined the local strain induced by irradiating a polycrystalline diamond thin film with a dose of 2 x 10(17) H+/cm(2) protons. Preliminary results indicate that a measurable strain, on the order of 10(-3), was introduced into the film near the End of Range (EOR) region of the protons. Published by Elsevier B.V. C1 NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA. Vanderbilt Univ, Nashville, TN USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Newton, RL (reprint author), NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA. EM robby.newton@nasa.gov NR 9 TC 0 Z9 1 U1 1 U2 1 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-9635 J9 DIAM RELAT MATER JI Diam. Relat. Mat. PD OCT PY 2005 VL 14 IS 10 BP 1588 EP 1591 DI 10.1016/j.diamond.2005.03.009 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA 967DH UT WOS:000232071200003 ER PT J AU Pantea, C Voronin, GA Zerda, TW Zhang, JZ Wang, LP Wang, YB Uchida, T Zhao, YS AF Pantea, C Voronin, GA Zerda, TW Zhang, JZ Wang, LP Wang, YB Uchida, T Zhao, YS TI Kinetics of SiC formation during high P-T reaction between diamond and silicon SO DIAMOND AND RELATED MATERIALS LA English DT Article DE high pressure; high temperature; SiC formation; diffusion; nanocrystalline diamond ID HIGH-PRESSURE; SELF-DIFFUSION; NANOSTRUCTURED DIAMOND; CARBIDE; COMPOSITES; CRYSTALS AB Time-resolved in situ X-ray diffraction at simultaneous high pressures (P) and high temperatures (T) was used to monitor kinetics of the reaction between diamond and silicon. Analysis of the data indicated that the reaction was diffusion controlled, and the diffusion was taking place through grain boundaries. For the nm size diamond the activation energy (170 kJ/mol) was smaller than that for gm size diamond (260 kJ/mol), and the reaction started at a temperature below the melting point of silicon. These effects are attributed to nanocrystalline structure and strained bonds within grain boundaries. Published by Elsevier B.V. C1 Los Alamos Natl Lab, LANSCE 12, Los Alamos, NM 87545 USA. Texas Christian Univ, Dept Phys & Astron, Ft Worth, TX 76129 USA. SUNY Stony Brook, Inst Mineral Phys, Stony Brook, NY 11794 USA. Univ Chicago, Consortium Adv Radiat Sources, Chicago, IL 60637 USA. RP Los Alamos Natl Lab, LANSCE 12, POB 1663, Los Alamos, NM 87545 USA. EM pantea@lanl.gov; yzhao@lanl.gov RI Pantea, Cristian/D-4108-2009; Lujan Center, LANL/G-4896-2012; OI Pantea, Cristian/0000-0002-0805-8923; Wang, Yanbin/0000-0001-5716-3183 NR 33 TC 9 Z9 9 U1 0 U2 3 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-9635 EI 1879-0062 J9 DIAM RELAT MATER JI Diam. Relat. Mat. PD OCT PY 2005 VL 14 IS 10 BP 1611 EP 1615 DI 10.1016/j.diamond.2005.04.013 PG 5 WC Materials Science, Multidisciplinary SC Materials Science GA 967DH UT WOS:000232071200007 ER PT J AU Qian, J Daemen, LL Zhao, Y AF Qian, J Daemen, LL Zhao, Y TI Hardness and fracture toughness of moissanite SO DIAMOND AND RELATED MATERIALS LA English DT Article DE silicon carbide; hardness; fracture toughness ID SILICON-CARBIDE; ANVIL CELL; INDENTATION; CERAMICS; DIAMOND; DEFORMATION; BEHAVIOR AB Disparities prevail among the reported hardness and fracture toughness values for hard and brittle materials. A better understanding of the physical nature of hardness and fracture toughness and a standardized technique for reliable measurements of these quantities is urgently needed. We strongly recommend the use of the measured hardness after the bend in the hardness versus load (H-F-Load) curve, when the hardness approaches its asymptotic value. The present work reports a systematic study of hardness and fracture toughness on moissanite (single crystal hexagonal silicon carbide, 6H-SiC) samples. The measurements were performed over a broad load range from 0.49 to 294 N with the direct indentation method. Asymptotic values of Knoop hardness of H-K = 19 GPa and Vickers hardness of H-V = 22 GPa were reached at a high load between 50 N and 100 N. A consistent fracture toughness of K-IC = 1.8 MPa(.)m(1/2) was obtained across the entire load range. Our study presents experimental results for the hardness and fracture toughness of moissanite in the asymptotic-hardness region, and it raises concern regarding the application of moissanite single crystals as anvil material under shear/fconditions. Published by Elsevier B.V. C1 Los Alamos Natl Lab, Los Alamos Neutron Scattering Ctr, Los Alamos, NM 87545 USA. RP Qian, J (reprint author), Los Alamos Natl Lab, Los Alamos Neutron Scattering Ctr, MS-H805, Los Alamos, NM 87545 USA. EM jiangq@lanl.gov RI Lujan Center, LANL/G-4896-2012 NR 30 TC 32 Z9 32 U1 6 U2 24 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-9635 J9 DIAM RELAT MATER JI Diam. Relat. Mat. PD OCT PY 2005 VL 14 IS 10 BP 1669 EP 1672 DI 10.1016/j.diamond.2005.06.007 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA 967DH UT WOS:000232071200014 ER PT J AU Revelle, DO AF Revelle, D. O. TI Recent advances in bolide entry modeling: A bolide potpourri SO EARTH MOON AND PLANETS LA English DT Article; Proceedings Paper CT Meteoroids 2004 Conference CY AUG 16-20, 2004 CL Univ Western Ontario, London, ENGLAND SP Gerenc Seguridad Ind & Protecc Ambiental RMNE, PEMEX Explorac Producc HO Univ Western Ontario ID LARGE METEOROIDS; EARTHS ATMOSPHERE; ABLATION; INFRASOUND; RADIATION; DYNAMICS; IMPACTS; FRAGMENTATION; WAVES AB In this paper, we will review recent research on numerous aspects of bolide entry into a planetary atmosphere, including such topics as the entry dynamics, energetics, ablation, deceleration, fragmentation, luminosity, mechanical wave generation processes, a total (panchromatic) power budget including differential and integral efficiencies vs. time, etc. Fragmentation, triggered by stagnation pressures exceeding the bolide breaking strength, has been included with subsequent wake behavior in either a collective or non-collective behavior limit. We have also utilized the differential panchromatic luminous efficiency of ReVelle and Ceplecha (2002c, Proceedings of Asteroids, Comets, Meteors ACM 2002, 29 July-2August, 285-288) to compute bolide luminosity. In addition we also introduce the concept of the differential and integral acoustic/infrasonic efficiency and generalized it to the case of mechanical wave efficiency including internal atmospheric gravity waves generated during entry. Unlike the other efficiencies which are assumed to be a constant multiple of the luminous efficiency, the acoustic efficiency is calculated independently using a 'first principles' approach. All of these topics have been pursued using either a homogeneous or a porous meteoroid model with great success. As a direct result, porosity seems to be a rather good possibility for explaining anomalous meteoroid behavior in the atmosphere. C1 Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. RP Revelle, DO (reprint author), Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. NR 36 TC 5 Z9 5 U1 0 U2 2 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0167-9295 J9 EARTH MOON PLANETS JI Earth Moon Planets PD OCT PY 2005 VL 97 IS 1-2 BP 1 EP 35 DI 10.1007/s11038-005-2876-4 PG 35 WC Astronomy & Astrophysics; Geosciences, Multidisciplinary SC Astronomy & Astrophysics; Geology GA 080ON UT WOS:000240257500001 ER PT J AU Belharouak, I Johnson, C Amine, K AF Belharouak, I Johnson, C Amine, K TI Synthesis and electrochemical analysis of vapor-deposited carbon-coated LiFePO4 SO ELECTROCHEMISTRY COMMUNICATIONS LA English DT Article DE carbon-coated LiFePO4; carbon vapor decomposition process ID LITHIUM IRON-PHOSPHATE; CATHODE MATERIAL; LICOO2; TEMPERATURE; PERFORMANCE; ELECTRODES; STABILITY; BATTERIES AB Carbon-coated LiFePO4 electrodes (C-LiFePO4) were prepared by a vapor deposition process. An improvement in the rate performance of C-LiFePO4 in lithium cells over uncoated LiFePO4 was observed. The coating process uses a solid/gas-phase reaction which consists of decomposing propylene gas, as carbon source, inside a reactor containing olivine LiFePO4 material. This process leads not only to the formation of few monolayers of carbon film at the surface of olivine particles but also allows for carbon to be deposited inside the pores of the particles. The amount of carbon deposited on olivine particles was determined by TG analysis to be around 3.4 wt%. The structural and electrochemical properties of an optimized electrode made of carbon-coated olivine without acetylene black additive are presented. Li/(C-LiFePO4) cells, cycled at RT and 37 degrees C between 2.0 and 4.3 V at a C/3 rate, do not show any sign of capacity fade during the first 70 cycles. The area-specific impedance (ASI) of a cell fabricated with carbon-coated olivine made by our process is much lower than the ASI's of cells made of conventional olivine and that of an olivine/carbon composite material reported here for the purpose of comparison. These characteristics, combined with the low-cost coating technique, make the carbon-coated olivine an attractive safe cathode for lithium-ion batteries. (c) 2005 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Div Chem Engn, Argonne, IL 60439 USA. RP Amine, K (reprint author), Argonne Natl Lab, Div Chem Engn, 9700 S Cass Ave, Argonne, IL 60439 USA. EM amine@cmt.anl.gov RI Amine, Khalil/K-9344-2013; OI Belharouak, Ilias/0000-0002-3985-0278 NR 20 TC 177 Z9 194 U1 11 U2 96 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 1388-2481 J9 ELECTROCHEM COMMUN JI Electrochem. Commun. PD OCT PY 2005 VL 7 IS 10 BP 983 EP 988 DI 10.1016/j.elecom.2005.06.019 PG 6 WC Electrochemistry SC Electrochemistry GA 971OA UT WOS:000232392600003 ER PT J AU Barr, JR Moura, H Boyer, AE Woolfitt, AR Kalb, SR Pavlopoulos, A McWilliams, LG Schmidt, JG Martinez, RA Ashley, DL AF Barr, JR Moura, H Boyer, AE Woolfitt, AR Kalb, SR Pavlopoulos, A McWilliams, LG Schmidt, JG Martinez, RA Ashley, DL TI Botulinum neurotoxin detection and differentiation by mass spectrometry SO EMERGING INFECTIOUS DISEASES LA English DT Article ID LINKED-IMMUNOSORBENT-ASSAY; B NEUROTOXIN; IN-VITRO; ENDOPEPTIDASE ACTIVITY; MOUSE BIOASSAY; SEROTYPE-B; SUBSTRATE; TOXIN; FOODS AB Botulinum neurotoxins (BoNTs) are proteases that cleave specific cellular proteins essential for neurotransmitter release. Seven BoNT serotypes (A-G) exist-, 4 usually cause human botulism (A, B, E, and F). We developed a rapid, mass spectrometry-based method (Endopep-MS) to detect and differentiate active BoNTs A, B, E, and F. This method uses the highly specific protease activity of the toxins with target peptides specific for each toxin serotype. The product peptides derived from the endopeptidase activities of BoNTs are detected by matrix-assisted laser-desorption ionization time-of-flight mass spectrometry. In buffer, this method can detect toxin equivalents of as little as 0.01 mouse lethal dose (MLD)(50) and concentrations as low as 0.62 MLD50/mL. A high-performance liquid chromatography-tandem mass spectrometry method for quantifying active toxin, where the amount of toxin can be correlated to the amount of product peptides, is also described. C1 Ctr Dis Control & Prevent, Atlanta, GA 30341 USA. Battelle Mem Inst, Atlanta, GA USA. Los Alamos Natl Lab, Los Alamos, NM USA. RP Barr, JR (reprint author), Ctr Dis Control & Prevent, 4770 Buford Hwy,Mailstop F47, Atlanta, GA 30341 USA. EM jbarr@cdc.gov OI Schmidt, Jurgen/0000-0002-8192-9940 NR 17 TC 92 Z9 94 U1 1 U2 10 PU CENTER DISEASE CONTROL PI ATLANTA PA ATLANTA, GA 30333 USA SN 1080-6040 J9 EMERG INFECT DIS JI Emerg. Infect. Dis PD OCT PY 2005 VL 11 IS 10 BP 1578 EP 1583 PG 6 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA 968VW UT WOS:000232192000013 PM 16318699 ER PT J AU Akbari, H Levinson, R Rainer, L AF Akbari, H Levinson, R Rainer, L TI Monitoring the energy-use effects of cool roofs on California commercial buildings SO ENERGY AND BUILDINGS LA English DT Article DE commercial buildings; energy; envelope; California; monitoring; cool roofs; peak demand ID SAVINGS AB Solar-reflective roofs stay cooler in the sun than solar-absorptive roofs. Such "cool" roofs achieve lower surface temperatures that reduce heat conduction into the building and the building's cooling load. We monitored the effects of cool roofs on energy use and environmental parameters in six California buildings at three different sites: a retail store in Sacramento; an elementary school in San Marcos (near San Diego); and a four-building cold storage facility in Reedley (near Fresno). The latter included a cold storage building, a conditioning and fruit-palletizing area, a conditioned packing area, and two unconditioned packing areas. Results showed that installing a cool roof reduced the daily peak roof surface temperature of each building by 33-42 K. In the retail store building in Sacramento, for the monitored period of 8 August-30 September 2002, the estimated savings in average air conditioning energy use was about 72 Wh/m(2)/day (52%). On hot days when the afternoon temperature exceeded 38 degrees C, the measured savings in average peak demand for peak hours (noon-5 p.m.) was about 10 W/m(2) of conditioned area. In the school building in San Marcos, for the monitored period of 8 July-20 August 2002, the estimated savings in average air conditioning energy use was about 42-48 Wh/m(2)/day (17-18%). On hot days, when the afternoon temperature exceeded 32 degrees C, the measured savings in average peak demand for hours 10 a.m.-4 p.m. was about 5 W/m(2) of conditioned area. In the cold storage facility in Reedley, for the monitored period of 11 July-14 September 2002, and 11 July-18 August 2003, the estimated savings in average chiller energy use was about 57-81 Wh/m(2)/day (3-4%). On hot days when the afternoon temperature exceeded 38 degrees C, the measured savings in average peak-period demand (average cooling-power demand during peak demand hours, typically noon-6 p.m.) was about 5-6 W/m(2) of conditioned area. Using the measured data and calibrated simulations, we estimated savings for similar buildings installing cool roofs in retrofit applications for all 16 California climate zones. For similar retail stores in climate zones 2 and 4-16, installing a cool roof can save about 6-15 kWh/m(2)/year of conditioned area. In climate zones 2-16, estimates of average peak demand savings for hours noon-5 p.m. range from 2.9 to 5.8 W/m(2). For similar school buildings in climate zones 2-16, installing a cool roof can save from 3 to 6 kWh/m(2)/year of conditioned roof area. For all 16 climate zones estimates of average peak demand savings for hours noon-5 p.m. range from 2.6 to 3.8 W/m(2). In similar cold storage buildings in all 16 climate zones, installing a cool roof can save about 4.5-7.4 kWh/m(2)/year of conditioned roof area. In all 16 climate zones, estimates of average peak demand savings for hours noon-5 p.m. range from 3.9 to 6.6 W/m(2). (C) 2005 Elsevier B.V. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Heat Isl Grp, Berkeley, CA 94720 USA. Davis Energy Grp, Davis, CA 95616 USA. RP Akbari, H (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Heat Isl Grp, Berkeley, CA 94720 USA. EM h_akbari@lbl.gov NR 17 TC 53 Z9 55 U1 1 U2 12 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7788 J9 ENERG BUILDINGS JI Energy Build. PD OCT PY 2005 VL 37 IS 10 BP 1007 EP 1016 DI 10.1016/j.enbuild.2004.11.013 PG 10 WC Construction & Building Technology; Energy & Fuels; Engineering, Civil SC Construction & Building Technology; Energy & Fuels; Engineering GA 961QE UT WOS:000231676100002 ER PT J AU Schweitzer, M Ogle-Graham, L AF Schweitzer, M Ogle-Graham, L TI A search for factors related to successful performance by Rebuild America partnerships SO ENERGY POLICY LA English DT Article DE energy efficiency; program success; key influences AB Under the sponsorship of the US Department of Energy's Office of Energy Efficiency and Renewable Energy, staff at Oak Ridge National Laboratory (ORNL) studied the Rebuild America program for the purpose of identifying key factors associated with successful operations. This involved performing a quantitative analysis of the relationships between program results and selected characteristics of the partnerships as well as soliciting opinion data from partnership representatives regarding the factors related to good performance. The statistical analysis revealed hat partnership age and the number of projects per partnership were both positively related to all the results measures tested, by themselves and in the presence of each other. The factors most frequently mentioned by the interviewed partnership representatives as influencing good partnership performance were: general assistance from the Rebuild America representative; open communications among all partners; existence of a "champion" for the partnership; support from the relevant city or state government; effective marketing to attract new partners', strong community interest; quick return on investment" interaction with other community organizations; and continuity of funding. A full discussion of all study findings can be found in the ORNL Report entitled at examination of Rebuild America partnership accomplishments and the factors influencing them (ORNL/CON-490, Oak Ridge National Laboratory, Oak Ridge, TN). (c) 2004 Elsevier Ltd. All rights reserved. C1 Oak Ridge Natl Lab, Econ & Social Sci Grp, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Urban & Reg Planning, Knoxville, TN 37996 USA. RP Schweitzer, M (reprint author), Oak Ridge Natl Lab, Econ & Social Sci Grp, POB 2008, Oak Ridge, TN 37831 USA. EM schweitzerm@ornl.gov NR 12 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0301-4215 J9 ENERG POLICY JI Energy Policy PD OCT PY 2005 VL 33 IS 15 BP 1957 EP 1968 DI 10.1016/j.enpol.2004.03.014 PG 12 WC Energy & Fuels; Environmental Sciences; Environmental Studies SC Energy & Fuels; Environmental Sciences & Ecology GA 948IA UT WOS:000230708100005 ER PT J AU Taha, MMR Lucero, J AF Taha, MMR Lucero, J TI Damage identification for structural health monitoring using fuzzy pattern recognition SO ENGINEERING STRUCTURES LA English DT Article; Proceedings Paper CT 2nd International Conference on Structural Engineering, Mechanics and Computation CY JUL 04-07, 2004 CL Cape Town, SOUTH AFRICA DE Structural Health Monitoring; artificial neural network; wavelet multi-resolution analysis; damage index; fuzzy set; Bayesian updating ID FAULT-DETECTION; CONCRETE AB Uncertainty abounds with in situ structural performance assessment and damage detection in Structural Health Monitoring (SHM). Most research in SHM focuses on statistical analysis, data acquisition, feature extraction and data reduction. We introduce a method to improve pattern recognition and damage detection by supplementing Intelligent Structural Health Monitoring (ISHM) with fuzzy sets. Intuitively we know that damage does not occur as a Boolean relation (one of two values, true or false) but progessively. Bayesian updating is used to demarcate levels of damage into fuzzy sets accommodating the uncertainty associated with the ambiguous damage states. The new techniques are examined to provide damage identification using data simulated from finite element analysis of a prestressed concrete bridge without a priori known levels of damage. (c) 2005 Elsevier Ltd. All rights reserved. C1 Univ New Mexico, Albuquerque, NM 87131 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Taha, MMR (reprint author), Univ New Mexico, Albuquerque, NM 87131 USA. EM mrtaha@unm.edu NR 24 TC 40 Z9 40 U1 0 U2 12 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0141-0296 J9 ENG STRUCT JI Eng. Struct. PD OCT PY 2005 VL 27 IS 12 BP 1774 EP 1783 DI 10.1016/j.engstruct.2005.04.018 PG 10 WC Engineering, Civil SC Engineering GA 964PI UT WOS:000231892600007 ER PT J AU Gabriel, MC Williamson, DG Brooks, S Zhang, H Lindberg, S AF Gabriel, MC Williamson, DG Brooks, S Zhang, H Lindberg, S TI Spatial variability of mercury emissions from soils in a southeastern US urban environment SO ENVIRONMENTAL GEOLOGY LA English DT Article DE mercury flux; spatial variability; urban area; soil type; Alabama ID DYNAMIC FLUX CHAMBER; TOTAL GASEOUS MERCURY; ATMOSPHERIC MERCURY; ELEMENTAL MERCURY; AIR/SURFACE EXCHANGE; MODEL; SURFACE; AIR; INTERFACE; CHINA AB We quantified gaseous mercury (Hg-0) fluxes over soil surfaces in an urban setting during the winters of 2003 and 2004 across the metropolitan area of Tuscaloosa, AL. The objective was to provide a first inspection of the local spatial variability of mercury flux in an urban area. Flux sampling took place on bare, undisturbed, soil surfaces within four evenly spaced landuse areas of Tuscaloosa: industrial, commercial, residential, and mixed landuse. Median total gaseous mercury fluxes (ng/m(2) h) from each site were as follows: 4.45 (residential site), 1.40 (industrial site), 2.14 (commercial site), and 0.87 (mixed landuse site). Using non-parametric statistical analyses., the residential and mixed landuse sites were found to be statistically different from the overall median flux. Landuse and soil type are the suspected factors primarily controlling the observed spatially variable fluxes. The presence of statistically different fluxes over soil surfaces on a local scale in this preliminary study warrants additional investigation, particularly during the spring and summer seasons when terrestrial mercury emission is the highest. Providing such information will help develop better estimates of mercury emission from urban areas and, ultimately, lead to more accurate and useful spatially relevant inventories. C1 Univ Alabama, Dept Civil & Environm Engn, Tuscaloosa, AL 35487 USA. NOAA, ATDD, Oak Ridge, TN 37831 USA. Tennessee Technol Univ, Dept Chem, Cookeville, TN 38505 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Williamson, DG (reprint author), Univ Alabama, Dept Civil & Environm Engn, Box 870205, Tuscaloosa, AL 35487 USA. EM dwilliamson@coe.eng.ua.edu NR 40 TC 14 Z9 14 U1 4 U2 7 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0943-0105 J9 ENVIRON GEOL JI Environ. Geol. PD OCT PY 2005 VL 48 IS 7 BP 955 EP 964 DI 10.1007/s00254-005-0043-x PG 10 WC Environmental Sciences; Geosciences, Multidisciplinary; Water Resources SC Environmental Sciences & Ecology; Geology; Water Resources GA 984KL UT WOS:000233303700013 ER PT J AU Chang, LY AF Chang, LY TI Chromate reduction in wastewater at different pH levels using thin iron wires - A laboratory study SO ENVIRONMENTAL PROGRESS LA English DT Article DE chromate reduction; desorption; zero-valent iron (Fe-o); pH effect; waste reduction ID ZERO-VALENT IRON; CHROMIUM(VI) REDUCTION; CR(VI) REDUCTION; SUBSURFACE REMEDIATION; ZEROVALENT IRON; KINETICS; REMOVAL; CORROSION; MEDIA; PRECIPITATION AB The effectiveness of using thin zero-valent iron (Fe 0) wires in the treatment of wastewater generated from a metal cleaning facility and with a pH in the range of 2 to 10 was examined. It was found that (1) when the sample containing low levels of total chromium <= 14 mg/L was mixed with iron wires at a pH of 3 to 8, 50 to 90% of the total chromium could be reduced in 4 h; (2) the initial reduction efficiency was pH-dependent: the lower the pH, the higher the reduction rate; (3) variations of solution pH, redox electrical potential, and electrical conductivity (EC) in samples were also pH-dependent; (4) the adsorption/reduction efficiency was limited by the diffusion of Cr(VI) from wastewater to the iron surface when the test duration was long; (5) when the initial pH = 3, iron corrosion and redox reaction dominated the reduction process; however, with pH = 8 or 10, corrosion, surface passivation, or metal precipitation could compete with reduction; (6) the used iron wires were still effective in chromium removal in new samples at pH = 3; and (7) some desorption of adsorbed chromium was observed in acidic samples when the test duration was long. Scanning electron microscope images and energy-dispersive X-ray spectra collected from iron samples also indicate that the efficiency of chromium adsorption/reduction is pH-dependent. Our results suggest that using zero-valent iron to polish acidic wastewater containing low contents of chromium and other heavy metals is feasible. C1 Lawrence Berkeley Natl Lab, EH&S Div, Berkeley, CA 94720 USA. RP Chang, LY (reprint author), Lawrence Berkeley Natl Lab, EH&S Div, MS85B, Berkeley, CA 94720 USA. EM lychang@lbl.gov NR 28 TC 31 Z9 36 U1 0 U2 8 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0278-4491 J9 ENVIRON PROG JI Environ. Prog. PD OCT PY 2005 VL 24 IS 3 BP 305 EP 316 DI 10.1002/ep.10082 PG 12 WC Engineering, Environmental; Engineering, Chemical; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 971WN UT WOS:000232415700010 ER PT J AU Williams, KH Ntarlagiannis, D Slater, LD Dohnalkova, A Hubbard, SS Banfield, JF AF Williams, KH Ntarlagiannis, D Slater, LD Dohnalkova, A Hubbard, SS Banfield, JF TI Geophysical imaging of stimulated microbial biomineralization SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID DESULFOVIBRIO-VULGARIS HILDENBOROUGH; INDUCED-POLARIZATION; SULFATE; AQUIFER; IP; PRECIPITATION; GROUNDWATER; REDUCTION; TRANSPORT; URANIUM AB Understanding how microorganisms influence the physical and chemical properties of the subsurface is hindered by our inability to observe microbial dynamics in real time and with high spatial resolution. Here, we investigate the use of noninvasive geophysical methods to monitor biornineralization at the laboratory scale during stimulated sulfate reduction under dynamic flow conditions. Alterations in sediment characteristics resulting from microbe-mediated sulfide mineral precipitation were concomitant with changes in complex resistivity and acoustic wave propagation signatures. The sequestration of zinc and iron in insoluble sulfides led to alterations in the ability of the pore fluid to conduct electrical charge and of the saturated sediments to dissipate acoustic energy. These changes resulted directly from the nucleation, growth, and development of nanoparticulate precipitates along grain surfaces and within the pore space. Scanning and transmission electron microscopy (SEM and TEM) confirmed the sulfides to be associated with cell surfaces, with precipitates ranging from aggregates of individual 3-5 nm nanocrystals to larger assemblages of up to 10-20 mu m in diameter. Anomalies in the geophysical data reflected the distribution of mineral precipitates and biomass over space and time, with temporal variations in the signals corresponding to changes in the aggregation state of the nanocrystalline sulfides. These results suggest the potential for using geophysical techniques to image certain subsurface biogeochemical processes, such as those accompanying the bioremediation of metal-contaminated aquifers. C1 Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Rutgers State Univ, Dept Earth & Environm Sci, Newark, NJ 07102 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Williams, KH (reprint author), Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA. EM khwilliams@lbl.gov RI Williams, Kenneth/O-5181-2014; Hubbard, Susan/E-9508-2010; OI Williams, Kenneth/0000-0002-3568-1155; Ntarlagiannis, Dimitrios/0000-0002-5353-372X NR 40 TC 81 Z9 88 U1 0 U2 37 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X EI 1520-5851 J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD OCT 1 PY 2005 VL 39 IS 19 BP 7592 EP 7600 DI 10.1021/es0504035 PG 9 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 971UJ UT WOS:000232410000042 PM 16245832 ER PT J AU Hellweg, S Demou, E Scheringer, M McKone, TE Hungerbuhler, K AF Hellweg, S Demou, E Scheringer, M McKone, TE Hungerbuhler, K TI Confronting workplace exposure to chemicals with LCA: Examples of trichloroethylene and perchloroethylene in metal degreasing and dry cleaning SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID AIR CONTAMINANTS STANDARD; OCCUPATIONAL-EXPOSURE; OSHAS RELIANCE; TLVS AB Life-Cycle Assessment (LCA) aims to assess all environmental impacts "from cradle to grave". Nevertheless, existing methods for Life-Cycle Impact Assessment (LCIA) generally do not consider impacts from chemical exposure at the workplace. This is a severe drawback, because neglecting occupational health effects may result in product or process optimizations at the expense of workers' health. We adapt an existing LCIA method to consider occupational health effects from the use of perchloroethylene (PCE) and trichloroethylene (TCE) in dry cleaning and metal degreasing. The results show that, in applications such as metal degreasing and dry cleaning, long-term (steady-state) concentrations at the workplace are up to 6 orders of magnitude higher than ambient air levels. Legal threshold values may be exceeded, depending on machine technology, size, and surrounding working conditions. The impact from workplace exposure to the total human-toxicity potential of the complete life cycle of PCE and TCE (including use, production, and disposal) is accordingly high. We therefore conclude that occupational health effects need to be considered in LCA to prevent overlooking key environmental-health impacts in LCA. C1 ETH Honggerberg, Swiss Fed Inst Technol, Safety & Environm Technol Grp, CH-8093 Zurich, Switzerland. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Hellweg, S (reprint author), ETH Honggerberg, Swiss Fed Inst Technol, Safety & Environm Technol Grp, CH-8093 Zurich, Switzerland. EM stefanie.hellweg@chem.ethz.ch OI Hellweg, Stefanie/0000-0001-6376-9878; Demou, Evangelia/0000-0001-8616-525X NR 35 TC 45 Z9 45 U1 0 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD OCT 1 PY 2005 VL 39 IS 19 BP 7741 EP 7748 DI 10.1021/es047944z PG 8 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 971UJ UT WOS:000232410000063 PM 16245853 ER PT J AU Azimov, YI Arndt, RA Strakovsky, II Workman, RL Goeke, K AF Azimov, YI Arndt, RA Strakovsky, II Workman, RL Goeke, K TI Search for higher flavor multiplets in partial-wave analyses SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article ID REGGE POLE TRAJECTORIES; POSITIVE-STRANGENESS; PENTAQUARK SEARCHES; ASYMPTOTIC BEHAVIOR; CHIRAL SOLITONS; PHOTOPRODUCTION; SCATTERING; STATES; RESONANCES; COLLISIONS AB The possible existence of higher multi-quark flavor multiplets of baryons is investigated. We argue that the S-matrix should have poles with any quantum numbers, including those which are exotic. This argument provides a novel justification for the existence of hadrons with arbitrary exotic structure. Though it does not constitute a proof, there are still no theoretical arguments against exotics. We then consider KN and pi N scattering. Conventional and modified partial-wave analyses provide several sets of candidates for correlated pairs (circle minus(1),Delta) each of which could label a related 27-plet. Properties of the pairs (masses, mass orderings, spin-parity quantum numbers) do not quite correspond to the current theoretical expectations. Decay widths of the candidates are either wider or narrower than expected. Possible reasons for such disagreements are briefly discussed. C1 Petersburg Nucl Phys Inst, St Petersburg 188300, Russia. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. George Washington Univ, Dept Phys, Ctr Nucl Studies, Washington, DC 20052 USA. Ruhr Univ Bochum, Inst Theoret Phys 2, D-44801 Bochum, Germany. RP Petersburg Nucl Phys Inst, St Petersburg 188300, Russia. EM azimov@thd.pnpi.spb.ru NR 63 TC 7 Z9 7 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PD OCT PY 2005 VL 26 IS 1 BP 79 EP 88 DI 10.1140/epja/i2005-10150-y PG 10 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 994SQ UT WOS:000234051900011 ER PT J AU Ovchinnikov, YN Kresin, VZ AF Ovchinnikov, YN Kresin, VZ TI Strong pair correlation in small metallic nanoclusters: the energy spectrum SO EUROPEAN PHYSICAL JOURNAL B LA English DT Article ID ELECTRONIC SHELL STRUCTURE; CADMIUM CLUSTERS; SUPERCONDUCTIVITY; DISTRIBUTIONS; TEMPERATURE AB The electronic shell structure in small metallic nanoclusters leads to high level degeneracy, which is strongly beneficial for the appearance of pair correlation. This results in a high value of T-c as well as in the appearance of a superconducting gap which causes a strong modification of the energy spectrum. The electronic energy spectrum becomes strongly temperature dependent. Consequently, specific experiments to demonstrate the presence of pair correlation can be proposed. C1 Russian Acad Sci, LD Landau Theoret Phys Inst, Moscow 117334, Russia. Max Planck Inst Phys Complex Syst, D-01187 Dresden, Germany. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Ovchinnikov, YN (reprint author), Russian Acad Sci, LD Landau Theoret Phys Inst, Moscow 117334, Russia. EM vzkresin@lbl.gov NR 26 TC 21 Z9 22 U1 0 U2 4 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6028 J9 EUR PHYS J B JI Eur. Phys. J. B PD OCT PY 2005 VL 47 IS 3 BP 333 EP 336 DI 10.1140/epjb/e2005-00349-2 PG 4 WC Physics, Condensed Matter SC Physics GA 978ZY UT WOS:000232913100002 ER PT J AU Peschel, O Schnell, I Czycholl, G AF Peschel, O Schnell, I Czycholl, G TI Ab initio many-body treatment of the electronic structure of metals SO EUROPEAN PHYSICAL JOURNAL B LA English DT Article ID MEAN-FIELD THEORY; CORRELATED SYSTEMS; BAND-STRUCTURE; SPECTRA; DIMENSIONS; LITHIUM; ENERGY; HEAT AB We propose and apply a combination of an ab initio (band-structure) calculation with a many-body treatment including screening effects. We start from a linearized muffin-tin orbital (LMTO) calculation to determine the Bloch functions for the Hartree one-particle Hamiltonian, from which we calculate the static susceptibility and dielectric function within the standard random phase approximation (RPA). From the Bloch functions we obtain maximally localized Wannier functions, using a method proposed by Marzari and Vanderbilt. Within this Wannier basis all relevant one-particle and unscreened and screened Coulomb matrix elements are calculated. This yields a multi-band Hamiltonian in second quantization with ab initio parameters, for which screening has been taken into account within the simplest standard approximation. Then, established methods of many-body theory are used. We apply this concept to a simple metal, namely lithium (Li). Here the maximally localized Wannier functions turn out to be of the sp(3)-orbital kind. Furthermore, only the on-site contributions of the screened Coulomb matrix elements are relevant, and a generalized, four-band Hubbard model is justified. The screened on-site Coulomb matrix elements are considerably smaller than the band width because of which it is sufficient to calculate the selfenergy in weak-coupling approximation. We compare results obtained within the screened Hartree-Fock approximation (HFA) and within the second-order perturbation theory (SOPT) in the Coulomb matrix elements for Li and find that many-body effects are small but not negligible even for this simple metal. C1 Univ Bremen, Dept Phys, D-28334 Bremen, Germany. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Univ Bremen, Dept Phys, POB 330 440, D-28334 Bremen, Germany. EM czycholl@itp.uni-bremen.de NR 35 TC 1 Z9 1 U1 1 U2 4 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6028 EI 1434-6036 J9 EUR PHYS J B JI Eur. Phys. J. B PD OCT PY 2005 VL 47 IS 3 BP 369 EP 378 DI 10.1140/epjb/e2005-00342-9 PG 10 WC Physics, Condensed Matter SC Physics GA 978ZY UT WOS:000232913100006 ER PT J AU Hansen, C Gollub, N Assamagan, K Ekelof, T AF Hansen, C. Gollub, N. Assamagan, K. Ekelof, T. TI Discovery potential for a charged Higgs boson decaying in the chargino-neutralino channel of the ATLAS detector at the LHC SO EUROPEAN PHYSICAL JOURNAL C LA English DT Article AB Charged Higgs boson production via the gluon-bottom quark mode, gb -> tH(perpendicular to), followed by its decay into a chargino and a neutralino has been investigated. The calculations are based on masses and couplings given by the Minimal Supersymmetric Standard Model (MSSM) for a specific choice of MSSM parameters. The signature of the signal is characterized by three hard leptons, a substantial missing transverse energy due to the decay of the neutralino and the chargino and three hard jets from the hadronic decay of the top quark. The possibility of detecting the signal over the Standard Model (SM) and non-SM backgrounds was studied for a set of tan beta and m(A). The existence of 5-sigma confidence level regions for H-+/- discovery at integrated luminosities of 100 fb(-1) and 300 fb(-1) is demonstrated, which cover also the intermediate region 4 less than or similar to tan beta less than or similar to 10 where H-+/- decays to SM particles cannot be used for H-+/- discovery. C1 [Hansen, C.; Gollub, N.; Ekelof, T.] Uppsala Univ, Dept Radiat Sci, Uppsala, Sweden. [Assamagan, K.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Hansen, C (reprint author), Uppsala Univ, Dept Radiat Sci, Uppsala, Sweden. EM Christian.Hansen@cern.ch RI Smirnov, Petr/N-9652-2015; Janssen, Xavier/E-1915-2013; Mangano, Salvatore/L-1752-2014; Lux, Thorsten/D-2156-2014; Soloviev, Yury/M-8788-2015; Levonian, Sergey/M-8693-2015; Andreev, Vladimir/M-8665-2015; Fomenko, Alexander/I-7900-2014; Lebedev, Andrey/M-9710-2015; Malinovski, Evgenii/N-1034-2015; Gogitidze, Nelli/N-1224-2015; Belousov, Anatoli/N-2102-2015; Vazdik, Iakov/N-2624-2015; Sheviakov, Igor/N-2735-2015; Ozerov, Dmitry/E-9139-2016; Cvach, Jaroslav/G-6269-2014; Kapishin, Mikhail/H-5834-2013 OI Mangano, Salvatore/0000-0001-5872-1191; Lux, Thorsten/0000-0002-7807-0856; Soloviev, Yury/0000-0003-1136-2827; Sheviakov, Igor/0000-0002-1659-3483; Kapishin, Mikhail/0000-0001-8473-4631 FU NorduGrid team FX This analysis has been performed within the framework of the ATLAS Collaboration. We have made use of the physics analysis framework and tools which are the result of collaboration-wide efforts. The authors would like to acknowledge useful discussions with many colleagues in the Collaboration. Further we would like to thank Stefano Moretti, Filip Moortgat and Mike Bisset for helpful advice and discussions. And we would also like to acknowledge Frank Paige for theoretical discussions and for ISAJET input. The MC samples were produced on the NorduGrid [24] and we thank the NorduGrid team, in particular Mattias Ellert, for their support. NR 24 TC 117 Z9 117 U1 1 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6044 EI 1434-6052 J9 EUR PHYS J C JI Eur. Phys. J. C PD OCT PY 2005 VL 44 SU 1 BP 1 EP 9 DI 10.1140/epjcd/s2005-03-005-9 PG 9 WC Physics, Particles & Fields SC Physics GA V11XI UT WOS:000207563900001 ER PT J AU Hansen, C Gollub, N Assamagan, K Ekelof, T AF Hansen, C. Gollub, N. Assamagan, K. Ekelof, T. TI Discovery potential for a charged Higgs boson decaying in the chargino-neutralino channel of the ATLAS detector at the LHC (vol 44, pg 1, 2005) SO EUROPEAN PHYSICAL JOURNAL C LA English DT Correction C1 [Hansen, C.; Gollub, N.; Ekelof, T.] Uppsala Univ, Dept Radiat Sci, Uppsala, Sweden. [Assamagan, K.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Hansen, C (reprint author), Uppsala Univ, Dept Radiat Sci, Uppsala, Sweden. EM Christian.Hansen@cern.ch NR 1 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6044 J9 EUR PHYS J C JI Eur. Phys. J. C PD OCT PY 2005 VL 44 SU 1 BP 11 EP 11 DI 10.1140/epjcd/s2005-02-010-4 PG 1 WC Physics, Particles & Fields SC Physics GA V11XI UT WOS:000207563900002 ER PT J AU Chekanov, S Derrick, M Magill, S Miglioranzi, S Musgrave, B Repond, J Yoshida, R Mattingly, MCK Pavel, N Molina, AGY Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Giusti, P Iacobucci, G Margotti, A Montanari, A Nania, R Palmonari, F Pesci, A Polini, A Rinaldi, L Sartorelli, G Zichichi, A Aghuzumtsyan, G Bartsch, D Brock, I Goers, S Hartmann, H Hilger, E Irrgang, P Jakob, HP Kind, O Meyer, U Paul, E Rautenberg, J Renner, R Voss, KC Wang, M Wlasenko, M Bailey, DS Brook, NH Cole, JE Heath, GP Namsoo, T Robins, S Capua, M Mastroberardino, A Schioppa, M Susinno, G Tassi, E Kim, JY Ma, KJ Helbich, M Ning, Y Ren, Z Schmidke, WB Sciulli, F Chwastowski, J Eskreys, A Figiel, J Galas, A Olkiewicz, K Stopa, P Szuba, D Zawiejski, L Adamczyk, L Bold, T Grabowska-Bold, I Kisielewska, D Kowal, AM Lukasik, J Przybycien, M Suszycki, L Szuba, J Kotanski, A Slominski, W Adler, V Behrens, U Bloch, I Borras, K Drews, G Fourletova, J Geiser, A Gladkov, D Gottlicher, P Gutsche, O Haas, T Hain, W Horn, C Kahle, B Kotz, U Kowalski, H Kramberger, G Lelas, D Lim, H Lohr, B Mankel, R Melzer-Pellmann, IA Nguyen, CN Notz, D Nuncio-Quiroz, AE Raval, A Santamarta, R Schneekloth, U Stosslein, U Wolf, G Youngman, C Zeuner, W Schlenstedt, S Barbagli, G Gallo, E Genta, C Pelfer, PG Bamberger, A Benen, A Karstens, F Dobur, D Vlasov, NN Bussey, PJ Doyle, AT Ferrando, J Hamilton, J Hanlon, S Saxon, DH Skillicorn, IO Gialas, I Carli, T Gosau, T Holm, U Krumnack, N Lohrmann, E Milite, M Salehi, H Schleper, P Schorner-Sadenius, T Stonjek, S Wichmann, K Wick, K Ziegler, A Ziegler, A Collins-Tooth, C Foudas, C Fry, C Goncalo, R Long, KR Tapper, AD Kataoka, M Nagano, K Tokushuku, K Yamada, S Yamazaki, Y Barakbaev, AN Boos, EG Pokrovskiy, NS Zhautykov, BO Son, D de Favereau, J Piotrzkowski, K Barreiro, F Glasman, C Gonzalez, O Jimenez, M Labarga, L del Peso, J Terron, J Zambrana, M Barbi, M Corriveau, F Liu, C Padhi, S Plamondon, M Stairs, DG Walsh, R Zhou, C Tsurugai, T Antonov, A Danilov, P Dolgoshein, BA Sosnovtsev, V Stifutkin, A Suchkov, S Dementiev, RK Ermolov, PF Gladilin, LK Katkov, II Khein, LA Korzhavina, IA Kuzmin, VA Levchenko, BB Lukina, OY Proskuryakov, AS Shcheglova, LM Zotkin, DS Zotkin, SA Abt, I Buttner, C Caldwell, A Liu, X Sutiak, J Coppola, N Grigorescu, G Grijpink, S Keramidas, A Koffeman, E Kooijman, P Maddox, E Pellegrino, A Schagen, S Tiecke, H Vazquez, M Wiggers, L de Wolf, E Brummer, N Bylsma, B Durkin, LS Ling, TY Allfrey, PD Bell, MA Cooper-Sarkar, AM Cottrell, A Devenish, RCE Foster, B Grzelak, G Gwenlan, C Kohno, T Patel, S Straub, PB Walczak, R Bellan, P Bertolin, A Brugnera, R Carlin, R Ciesielski, R Dal Corso, F Dusini, S Garfagnini, A Limentani, S Longhin, A Stanco, L Turcato, M Heaphy, EA Metlica, F Oh, BY Whitmore, JJ Iga, Y D'Agostini, G Marini, G Nigro, A Hart, JC Abramowicz, H Gabareen, A Kananov, S Kreisel, A Levy, A Kuze, M Kagawa, S Tawara, T Hamatsu, R Kaji, H Kitamura, S Matsuzawa, K Ota, O Ri, YD Costa, M Ferrero, MI Monaco, V Sacchi, R Solano, A Arneodo, M Ruspa, M Fourletov, S Koop, T Martin, JF Mirea, A Butterworth, JM Hall-Wilton, R Jones, TW Loizides, JH Sutton, MR Targett-Adams, C Wing, M Ciborowski, J Kulinski, P Luzniak, P Malka, J Nowak, RJ Pawlak, JM Sztuk, J Tymieniecka, T Tyszkiewicz, A Ukleja, A Ukleja, J Zarnecki, AF Adamus, M Plucinski, P Eisenberg, Y Hochman, D Karshon, U Lightwood, MS Everett, A Kcira, D Lammers, S Li, L Reeder, DD Rosin, M Ryan, P Savin, AA Smith, WH Dhawan, S Bhadra, S Catterall, CD Cui, Y Hartner, G Menary, S Noor, U Soares, M Standage, J Whyte, J AF Chekanov, S Derrick, M Magill, S Miglioranzi, S Musgrave, B Repond, J Yoshida, R Mattingly, MCK Pavel, N Molina, AGY Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Giusti, P Iacobucci, G Margotti, A Montanari, A Nania, R Palmonari, F Pesci, A Polini, A Rinaldi, L Sartorelli, G Zichichi, A Aghuzumtsyan, G Bartsch, D Brock, I Goers, S Hartmann, H Hilger, E Irrgang, P Jakob, HP Kind, O Meyer, U Paul, E Rautenberg, J Renner, R Voss, KC Wang, M Wlasenko, M Bailey, DS Brook, NH Cole, JE Heath, GP Namsoo, T Robins, S Capua, M Mastroberardino, A Schioppa, M Susinno, G Tassi, E Kim, JY Ma, KJ Helbich, M Ning, Y Ren, Z Schmidke, WB Sciulli, F Chwastowski, J Eskreys, A Figiel, J Galas, A Olkiewicz, K Stopa, P Szuba, D Zawiejski, L Adamczyk, L Bold, T Grabowska-Bold, I Kisielewska, D Kowal, AM Lukasik, J Przybycien, M Suszycki, L Szuba, J Kotanski, A Slominski, W Adler, V Behrens, U Bloch, I Borras, K Drews, G Fourletova, J Geiser, A Gladkov, D Gottlicher, P Gutsche, O Haas, T Hain, W Horn, C Kahle, B Kotz, U Kowalski, H Kramberger, G Lelas, D Lim, H Lohr, B Mankel, R Melzer-Pellmann, IA Nguyen, CN Notz, D Nuncio-Quiroz, AE Raval, A Santamarta, R Schneekloth, U Stosslein, U Wolf, G Youngman, C Zeuner, W Schlenstedt, S Barbagli, G Gallo, E Genta, C Pelfer, PG Bamberger, A Benen, A Karstens, F Dobur, D Vlasov, NN Bussey, PJ Doyle, AT Ferrando, J Hamilton, J Hanlon, S Saxon, DH Skillicorn, IO Gialas, I Carli, T Gosau, T Holm, U Krumnack, N Lohrmann, E Milite, M Salehi, H Schleper, P Schorner-Sadenius, T Stonjek, S Wichmann, K Wick, K Ziegler, A Ziegler, A Collins-Tooth, C Foudas, C Fry, C Goncalo, R Long, KR Tapper, AD Kataoka, M Nagano, K Tokushuku, K Yamada, S Yamazaki, Y Barakbaev, AN Boos, EG Pokrovskiy, NS Zhautykov, BO Son, D de Favereau, J Piotrzkowski, K Barreiro, F Glasman, C Gonzalez, O Jimenez, M Labarga, L del Peso, J Terron, J Zambrana, M Barbi, M Corriveau, F Liu, C Padhi, S Plamondon, M Stairs, DG Walsh, R Zhou, C Tsurugai, T Antonov, A Danilov, P Dolgoshein, BA Sosnovtsev, V Stifutkin, A Suchkov, S Dementiev, RK Ermolov, PF Gladilin, LK Katkov, II Khein, LA Korzhavina, IA Kuzmin, VA Levchenko, BB Lukina, OY Proskuryakov, AS Shcheglova, LM Zotkin, DS Zotkin, SA Abt, I Buttner, C Caldwell, A Liu, X Sutiak, J Coppola, N Grigorescu, G Grijpink, S Keramidas, A Koffeman, E Kooijman, P Maddox, E Pellegrino, A Schagen, S Tiecke, H Vazquez, M Wiggers, L de Wolf, E Brummer, N Bylsma, B Durkin, LS Ling, TY Allfrey, PD Bell, MA Cooper-Sarkar, AM Cottrell, A Devenish, RCE Foster, B Grzelak, G Gwenlan, C Kohno, T Patel, S Straub, PB Walczak, R Bellan, P Bertolin, A Brugnera, R Carlin, R Ciesielski, R Dal Corso, F Dusini, S Garfagnini, A Limentani, S Longhin, A Stanco, L Turcato, M Heaphy, EA Metlica, F Oh, BY Whitmore, JJ Iga, Y D'Agostini, G Marini, G Nigro, A Hart, JC Abramowicz, H Gabareen, A Kananov, S Kreisel, A Levy, A Kuze, M Kagawa, S Tawara, T Hamatsu, R Kaji, H Kitamura, S Matsuzawa, K Ota, O Ri, YD Costa, M Ferrero, MI Monaco, V Sacchi, R Solano, A Arneodo, M Ruspa, M Fourletov, S Koop, T Martin, JF Mirea, A Butterworth, JM Hall-Wilton, R Jones, TW Loizides, JH Sutton, MR Targett-Adams, C Wing, M Ciborowski, J Kulinski, P Luzniak, P Malka, J Nowak, RJ Pawlak, JM Sztuk, J Tymieniecka, T Tyszkiewicz, A Ukleja, A Ukleja, J Zarnecki, AF Adamus, M Plucinski, P Eisenberg, Y Hochman, D Karshon, U Lightwood, MS Everett, A Kcira, D Lammers, S Li, L Reeder, DD Rosin, M Ryan, P Savin, AA Smith, WH Dhawan, S Bhadra, S Catterall, CD Cui, Y Hartner, G Menary, S Noor, U Soares, M Standage, J Whyte, J CA ZEUS Collaboration TI Multijet production in neutral current deep inelastic scattering at HERA and determination of alpha(s) SO EUROPEAN PHYSICAL JOURNAL C LA English DT Article ID JET CROSS-SECTIONS; LEPTON-NUCLEON SCATTERING; CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; MONTE-CARLO GENERATOR; P(P)OVER-BAR COLLISIONS; PARTON DISTRIBUTIONS; HADRON-COLLISIONS; DIJET PRODUCTION; 3-JET PRODUCTION AB Multijet production rates in neutral current deep inelastic scattering have been measured in the range of exchanged boson virtualities 10 < Q(2) < 5000 GeV2. The data were taken at the ep collider HERA with centre-of-mass energy root s = 318 GeV using the ZEUS detector and correspond to an integrated luminosity of 82.2 pb(-1). Jets were identified in the Breit frame using the k(T) cluster algorithm in the longitudinally invariant inclusive mode. Measurements of differential dijet and trijet cross sections are presented as functions of jet transverse energy (E-T,B(jet)), pseudorapitidy (eta(jet)(LAB)) and Q(2) with E-T,B(jet) > 5 GeV and -1 < eta(jet)(LAB) < 2.5. Next-to-leading- order QCD calculations describe the data well. The value of the strong coupling constant alpha(s)(M-Z), determined from the ratio of the trijet to dijet cross sections, is alpha(s)(M-Z) = 0.1179 +/- 0.0013 (stat.)(-0.0046)(+0.0028) (th.). C1 Argonne Natl Lab, Argonne, IL 60439 USA. Andrews Univ, Berrien Springs, MI 49104 USA. Humboldt Univ, Inst Phys, Berlin, Germany. Univ Bologna, Bologna, Italy. Ist Nazl Fis Nucl, I-40126 Bologna, Italy. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. Univ Calabria, Dept Phys, I-87036 Cosenza, Italy. Ist Nazl Fis Nucl, Cosenza, Italy. Chonnam Natl Univ, Kwangju, South Korea. Columbia Univ, Nevis Labs, Irvington, NY 10027 USA. Inst Nucl Phys, Krakow, Poland. AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland. Jagiellonian Univ, Dept Phys, Krakow, Poland. DESY, D-2000 Hamburg, Germany. DESY, Zeuthen, Germany. Univ Florence, Florence, Italy. Ist Nazl Fis Nucl, I-50125 Florence, Italy. Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany. Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland. Univ Aegean, Dept Engn Management & Finance, Mitilini, Greece. Univ Hamburg, Inst Expt Phys, Hamburg, Germany. Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England. Natl Lab High Energy Phys, KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 305, Japan. Minist Educ & Sci Kazakhstan, Inst Phys & Technol, Alma Ata, Kazakhstan. Kyungpook Natl Univ, Ctr High Energy Phys, Taegu, South Korea. Catholic Univ Louvain, Inst Phys Nucl, B-1348 Louvain, Belgium. Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain. McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan. Moscow Engn Phys Inst, Moscow 115409, Russia. Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow, Russia. Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. NIKHEF, Amsterdam, Netherlands. Univ Amsterdam, Amsterdam, Netherlands. Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. Univ Oxford, Dept Phys, Oxford, England. Univ Padua, Dipartimento Fis, Padua, Italy. Ist Nazl Fis Nucl, Padua, Italy. Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Polytech Univ, Sagamihara, Kanagawa, Japan. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Ist Nazl Fis Nucl, Rome, Italy. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys, IL-69978 Tel Aviv, Israel. Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan. Univ Tokyo, Dept Phys, Tokyo 113, Japan. Tokyo Metropolitan Univ, Dept Phys, Tokyo, Japan. Univ Turin, Turin, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Piemonte Orientale, Novara, Italy. Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. UCL, Dept Phys & Astron, London, England. Warsaw Univ, Inst Expt Phys, Warsaw, Poland. Inst Nucl Studies, PL-00681 Warsaw, Poland. Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Yale Univ, Dept Phys, New Haven, CT 06520 USA. York Univ, Dept Phys, N York, ON M3J 1P3, Canada. Nara Womens Univ, Nara 630, Japan. Max Planck Inst, Munich, Germany. Univ Lodz, PL-90131 Lodz, Poland. RP Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI dusini, stefano/J-3686-2012; Goncalo, Ricardo/M-3153-2016; Li, Liang/O-1107-2015; Capua, Marcella/A-8549-2015; De Pasquale, Salvatore/B-9165-2008; Wing, Matthew/C-2169-2008; Doyle, Anthony/C-5889-2009; Gladilin, Leonid/B-5226-2011; Suchkov, Sergey/M-6671-2015; collins-tooth, christopher/A-9201-2012; Ferrando, James/A-9192-2012; Levchenko, B./D-9752-2012; Proskuryakov, Alexander/J-6166-2012; Dementiev, Roman/K-7201-2012; Wiggers, Leo/B-5218-2015; Tassi, Enrico/K-3958-2015 OI dusini, stefano/0000-0002-1128-0664; Goncalo, Ricardo/0000-0002-3826-3442; Li, Liang/0000-0001-6411-6107; Capua, Marcella/0000-0002-2443-6525; Arneodo, Michele/0000-0002-7790-7132; Gutsche, Oliver/0000-0002-8015-9622; De Pasquale, Salvatore/0000-0001-9236-0748; Doyle, Anthony/0000-0001-6322-6195; Gladilin, Leonid/0000-0001-9422-8636; Ferrando, James/0000-0002-1007-7816; Wiggers, Leo/0000-0003-1060-0520; NR 63 TC 19 Z9 19 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6044 EI 1434-6052 J9 EUR PHYS J C JI Eur. Phys. J. C PD OCT PY 2005 VL 44 IS 2 BP 183 EP 193 DI 10.1140/epjc/s2005-02347-1 PG 11 WC Physics, Particles & Fields SC Physics GA 969RU UT WOS:000232253200004 ER PT J AU Kalyuzhnyi, YV Kahl, G Cummings, PT AF Kalyuzhnyi, YV Kahl, G Cummings, PT TI Towards the phase diagram of a polydisperse mixture of charged hard spheres SO EUROPHYSICS LETTERS LA English DT Article ID MEAN-SPHERICAL APPROXIMATION; RESTRICTED-PRIMITIVE MODEL; DIRECTIONAL ATTRACTIVE FORCES; MONTE-CARLO; INTEGRAL-EQUATION; CHAIN MOLECULES; CRITICAL-POINT; FLUIDS; COEXISTENCE; ELECTROLYTES AB In an effort to approach a quantitative determination of the phase diagram of polydisperse mixtures of (possibly size-asymmetric) charged hard spheres (CHS), we propose a concept that explicitly takes into account the association of the ions into dimers, i.e., an effect that is known to be of high relevance close to the liquid-vapor phase boundary in the restricted primitive model (RPM). We use the polymer mean spherical approximation (PMSA) to calculate the properties of this polydisperse mixture of dimers. The concept turns out to be a truncatable free energy model, thus the phase diagram can be calculated by solving a highly non-linear set of equations. We present the full phase diagram (in terms of cloud and shadow curves and binodals) and discuss fractionation effects for a model system. C1 Inst Condensed Matter Phys, UA-79011 Lvov, Ukraine. Vienna Tech Univ, Ctr Computat Mat Sci, A-1040 Vienna, Austria. Vienna Tech Univ, Inst Theoret Phys, A-1040 Vienna, Austria. Vanderbilt Univ, Dept Chem Engn, Nashville, TN 37235 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Kalyuzhnyi, YV (reprint author), Inst Condensed Matter Phys, Svientsitskoho 1, UA-79011 Lvov, Ukraine. RI Cummings, Peter/B-8762-2013; Kahl, Gerhard/Q-9079-2016 OI Cummings, Peter/0000-0002-9766-2216; Kahl, Gerhard/0000-0002-4375-4684 NR 35 TC 8 Z9 8 U1 0 U2 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD OCT PY 2005 VL 72 IS 1 BP 96 EP 102 DI 10.1209/epl/i2005-10202-4 PG 7 WC Physics, Multidisciplinary SC Physics GA 977EN UT WOS:000232785300015 ER PT J AU Yang, J Dizon, MB Cheung, EB Rempe, JL Suh, KY Kim, SB AF Yang, J Dizon, MB Cheung, EB Rempe, JL Suh, KY Kim, SB TI Critical heat flux for downward facing boiling on a coated hemispherical surface SO EXPERIMENTAL HEAT TRANSFER LA English DT Article DE downward facing boiling; critical heat flux; microporous coatings ID NUCLEATE AB An experimental study was performed to investigate the effect of surface coating on the critical heat flux for downward facing boiling on the outer surface of a hemispherical vessel. Steady-state boiling experiments were conducted in the subscale boundary layer boiling (SBLB) facility using test vessels with metallic microporous coatings to obtain the local boiling curves and the local critical heat flux (CHF) limits. Similar heat transfer performance was observed for microporous aluminum and microporous copper coatings. When compared to the corresponding data without coatings, the boiling curves for the coated vessels were found to shift upward and to the right. This meant that the CHF limit was higher with surface coating and that the minimum film boiling temperatures were located at higher wall superheats. In particular, the microporous coatings were found to enhance the local CHF values appreciably at all angular locations explored in the experiments. Results of the present study showed that the microporous aluminum coating was very durable. Even after many cycles of steady state boiling, the vessel coaling remained rather intact, with no apparent changes in color or structure. Although similar heat transfer performance was observed for microporous copper coatings, the latter were found to be much less durable and tended to degrade after several cycles of boiling. C1 Penn State Univ, Dept Mech & Nucl Engn, Coll Engn, University Pk, PA 16802 USA. Idaho Natl Lab, Idaho Falls, ID USA. Seoul Natl Univ, Dept Nucl Engn, Seoul, South Korea. Korea Atom Energy Res Inst, Taejon, South Korea. RP Cheung, EB (reprint author), Penn State Univ, Dept Mech & Nucl Engn, Coll Engn, 137 Reber Bldg, University Pk, PA 16802 USA. EM fxc4@psu.edu OI Rempe, Joy/0000-0001-5527-3549 NR 18 TC 2 Z9 2 U1 0 U2 4 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0891-6152 EI 1521-0480 J9 EXP HEAT TRANSFER JI Exp. Heat Transf. PD OCT-DEC PY 2005 VL 18 IS 4 BP 223 EP 242 DI 10.1080/08916150500201537 PG 20 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA 973AR UT WOS:000232495800002 ER PT J AU Yu, W Hull, JR France, DM Ramamoorthy, VKV AF Yu, W Hull, JR France, DM Ramamoorthy, VKV TI Small-channel flow boiling of one-component fluids and an ethylene glycol/water mixture SO EXPERIMENTAL HEAT TRANSFER LA English DT Article DE boiling heat transfer; ethylene glycol/water mixture; small channel; horizontal flow ID CRITICAL HEAT-FLUX; VERTICAL TUBES; PRESSURE-DROP AB Boiling heat transfer experiments were performed in a 2.98-mm inside-diameter horizontal tube with a two-component mixture of 50150 ethylene glycol and water. The data were compared with existing results from three single-component fluids under similar boiling conditions. Boiling heat transfer in small channels with the single-component fluids exhibited a nucleation dominant region that is considerably more extensive than found in larger diameter tubes. Data for the 50150 ethylene glycol/water mixture were similar in this regard to the single-component fluids; differences occurred with respect to heat transfer rates, extent of transition boiling, critical heat flux, and flow stability. Based on these data comparisons, we developed a concept for dividing flow boiling into its three regions. Using this division, we developed a new general correlation for the nucleation-dominant region based on Boiling and Weber numbers. The correlation is specific to nucleation-dominant flow boiling in small channels, and it provides good predictions of the data from all four fluids: Refrigerants 12 and 134a, water, and 50/50 ethylene glycol/water mixture. C1 Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. Univ Illinois, Dept Mech Engn, Chicago, IL 60680 USA. RP Yu, W (reprint author), Argonne Natl Lab, Div Energy Technol, 9700 S Cass Ave,Bldg 335, Argonne, IL 60439 USA. EM wyu@anl.gov NR 17 TC 5 Z9 5 U1 2 U2 4 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0891-6152 J9 EXP HEAT TRANSFER JI Exp. Heat Transf. PD OCT-DEC PY 2005 VL 18 IS 4 BP 243 EP 257 DI 10.1080/08916150500201545 PG 15 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA 973AR UT WOS:000232495800003 ER PT J AU Lee, YJ Wagner, ID Brice, ME Kevbrin, VV Mills, GL Romanek, CS Wiegel, J AF Lee, YJ Wagner, ID Brice, ME Kevbrin, VV Mills, GL Romanek, CS Wiegel, J TI Thermosediminibacter oceani gen. nov., sp nov and Thermosediminibacter litoriperuensis sp nov., new anaerobic thermophilic bacteria isolated from Peru Margin SO EXTREMOPHILES LA English DT Article DE Ocean Drilling Program (ODP); Leg 201; Thermosediminibacter oceani; Thermosediminibacter litoriperuensis; deep sea sediment ID FATTY-ACID PROFILES; RENATURATION RATES; DNA HYBRIDIZATION; SEDIMENTS; POPULATIONS; SOIL AB A new group of anaerobic thermophilic bacteria was isolated from enrichment cultures obtained from deep sea sediments of Peru Margin collected during Leg 201 of the Ocean Drilling Program. A total of ten isolates were obtained from cores of 1 - 2 m below seafloor (mbsf) incubated at 60 degrees C: three isolates came from the sediment 426 m below sea level with a surface temperature of 9 degrees C ( Site 1227), one from 252 m below sea level with a temperature of 12 degrees C ( Site 1228), and six isolates under sulfate-reducing condition from the lower slope of the Peru Trench ( Site 1230). Strain JW/IW1228P from the Site 1228 and strain JW/YJL-1230-7/2 from the Site 1230 were chosen as representatives of the two identified clades. Based on the 16S rDNA sequence analysis, these isolates represent a novel group with Thermovenabulum and Caldanaerobacter as their closest relatives. The temperature range for growth was 52 76 degrees C with an optimum at around 68 degrees C for JW/IW-1228P and 43 - 76 degrees C with an optimum at around 64 degrees C for JW/YJL-1230- 7/2. The pH(25C) range for growth was from 6.3 to 9.3 with an optimum at 7.5 for JW/ IW1228P and from 5 to 9.5 with an optimum at 7.9 - 8.4 for JW/ YJL-1230-7/2. The salinity range for growth was from 0% to 6% (w/v) for JW/ IW- 1228P and from 0% to 4.5% (w/v) for JW/YJL-1230-7/2. The G+C content of the DNA was 50 mol% for both JW/IW-1228P and JW/YJL-1230-7/2. DNA - DNA hybridization yielded 52% similarity between the two strains. According to 16S rRNA gene sequence analysis, the isolates are located within the family, Thermoanaerobacteriaceae. Based on their morphological and physiological properties and phylogenetic analysis, it is proposed that strain JW/IW-1228P T is placed into a novel taxa, Thermosediminibacter oceani, gen. nov., sp. nov. (DSM 16646(T)= ATCC BAA- 1034(T)), and JW/YJL-1230-7/2(T) into Thermosediminibacter litoriperuensis sp. nov. ( DSM 16647(T) = ATCC BAA-1035(T)). C1 Univ Georgia, Dept Microbiol, Athens, GA 30602 USA. Univ Georgia, Dept Geol, Athens, GA 30602 USA. Savannah River Ecol Lab, Aiken, SC 29802 USA. RP Wiegel, J (reprint author), Univ Georgia, Dept Microbiol, 527 Biol Sci Bldg,1000 Cedar St, Athens, GA 30602 USA. EM jwiegel@uga.edu OI Wiegel, Juergen/0000-0002-6343-6464 NR 33 TC 38 Z9 39 U1 0 U2 6 PU SPRINGER TOKYO PI TOKYO PA 3-3-13, HONGO, BUNKYO-KU, TOKYO, 113-0033, JAPAN SN 1431-0651 J9 EXTREMOPHILES JI Extremophiles PD OCT PY 2005 VL 9 IS 5 BP 375 EP 383 DI 10.1007/s00792-005-0453-4 PG 9 WC Biochemistry & Molecular Biology; Microbiology SC Biochemistry & Molecular Biology; Microbiology GA 971TA UT WOS:000232406400005 PM 15965715 ER PT J AU Maroto-Valer, MM Fauth, DJ AF Maroto-Valer, MM Fauth, DJ TI Carbon Dioxide Capture and Sequestration - Preface SO FUEL PROCESSING TECHNOLOGY LA English DT Editorial Material C1 Univ Nottingham, SChEME, Nottingham NG7 2RD, England. US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Maroto-Valer, MM (reprint author), Univ Nottingham, SChEME, Univ Pk, Nottingham NG7 2RD, England. EM Mercedes.maroto-valer@nottingham.ac.uk RI Maroto-Valer, Mercedes/F-5016-2014 OI Maroto-Valer, Mercedes/0000-0003-1643-2863 NR 1 TC 1 Z9 1 U1 3 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3820 J9 FUEL PROCESS TECHNOL JI Fuel Process. Technol. PD OCT PY 2005 VL 86 IS 14-15 BP 1421 EP 1422 DI 10.1016/j.fuproc.2005.07.002 PG 2 WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical SC Chemistry; Energy & Fuels; Engineering GA 956MM UT WOS:000231304000001 ER PT J AU Granite, EJ O'Brien, T AF Granite, EJ O'Brien, T TI Review of novel methods for carbon dioxide separation from flue and fuel gases SO FUEL PROCESSING TECHNOLOGY LA English DT Article; Proceedings Paper CT Symposium on Carbon Dioxide Capture and Sequestration held at 227th National Meeting of the American-Chemical-Society CY MAR, 2004 CL Anaheim, CA SP Amer Chem Soc DE carbon dioxide; separation; electrochemical pumps; membrane; chemical looping ID CHEMICAL-LOOPING-COMBUSTION; POWER-GENERATION SYSTEM; EXERGY ANALYSIS; GEOLOGICAL FORMATIONS; HYDROGEN SEPARATION; LARGE STATIONARY; HIGH-TEMPERATURE; CO2; ENERGY; PALLADIUM AB This paper reviews some of the more novel methods for carbon dioxide separation from flue and fuel gas streams. These methods include electrochemical pumps, membranes, and chemical looping approaches to CO2 separation. Electrochemical pumps discussed include carbonate and proton conductors. Selective membranes for hydrogen separation are discussed as a method for carbon dioxide concentration in fuel gas streams. The selective membranes include mixed ionic-electronic (solid electrolyte-metal) films as well as palladium-based materials. Chemical looping combustion is briefly discussed. The fundamental mechanisms behind these techniques will be explained, and recent advances in these methods are emphasized. Future research directions are suggested and an extensive list of references is provided. Published by Elsevier B.V. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP US DOE, Natl Energy Technol Lab, POB 10940,MS 58-106, Pittsburgh, PA 15236 USA. EM evan.granite@netl.doe.gov NR 79 TC 87 Z9 88 U1 5 U2 46 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3820 EI 1873-7188 J9 FUEL PROCESS TECHNOL JI Fuel Process. Technol. PD OCT PY 2005 VL 86 IS 14-15 BP 1423 EP 1434 DI 10.1016/j.fuproc.2005.01.001 PG 12 WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical SC Chemistry; Energy & Fuels; Engineering GA 956MM UT WOS:000231304000002 ER PT J AU Gray, ML Soong, Y Champagne, KJ Pennline, H Baltrus, JP Stevens, RW Khatri, R Chuang, SSC Filburn, T AF Gray, ML Soong, Y Champagne, KJ Pennline, H Baltrus, JP Stevens, RW Khatri, R Chuang, SSC Filburn, T TI Improved immobilized carbon dioxide capture sorbents SO FUEL PROCESSING TECHNOLOGY LA English DT Article; Proceedings Paper CT Symposium on Carbon Dioxide Capture and Sequestration held at 227th National Meeting of the American-Chemical-Society CY MAR, 2004 CL Anaheim, CA SP Amer Chem Soc DE carbon dioxide; capture; amine sorbent ID SURFACE MODIFICATION; MESOPOROUS SILICA; CO2; TITANIUM; SBA-15 AB The capture of carbon dioxide from simulated flue gas streams has been achieved by using immobilized and aminated-SBA-15 solid sorbents. SBA-15, a mesoporous silica material with a uniform pore size of 21 nm and a surface area of 200-230 m(2)/g. The solid sorbents prepared in this study exhibit similar or improved capacities relative to those already used to control CO2 concentrations in submarine and spacecraft applications. The results suggest that immobilized secondary amines have a stronger affinity for the capture of carbon dioxide from simulated flue gas streams than primary amines. The performance of these immobilized and aminated-SBA-15 solid sorbents decreased with regeneration. Published by Elsevier B.V. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. Univ Akron, Dept Chem Engn, Akron, OH 44325 USA. Univ Hartford, Coll Engn, Hartford, CT 06117 USA. RP Gray, ML (reprint author), US DOE, Natl Energy Technol Lab, POB 10940, Pittsburgh, PA 15236 USA. EM Gray@NETL.DOE.GOV OI Stevens, Robert/0000-0002-0864-6768 NR 19 TC 166 Z9 168 U1 1 U2 29 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3820 J9 FUEL PROCESS TECHNOL JI Fuel Process. Technol. PD OCT PY 2005 VL 86 IS 14-15 BP 1449 EP 1455 DI 10.1016/j.fuproc.2005.01.005 PG 7 WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical SC Chemistry; Energy & Fuels; Engineering GA 956MM UT WOS:000231304000004 ER PT J AU Fauth, DJ Frommell, EA Hoffman, JS Reasbeck, RP Pennline, HW AF Fauth, DJ Frommell, EA Hoffman, JS Reasbeck, RP Pennline, HW TI Eutectic salt promoted lithium zirconate: Novel high temperature sorbent for CO2 capture SO FUEL PROCESSING TECHNOLOGY LA English DT Article; Proceedings Paper CT Symposium on Carbon Dioxide Capture and Sequestration held at 227th National Meeting of the American-Chemical-Society CY MAR, 2004 CL Anaheim, CA SP Amer Chem Soc DE CO2 capture; lithium zirconate; eutectic salts; solid regenerable sorbents ID CARBONATE; SORPTION; SEQUESTRATION; ABSORPTION; SEPARATION; GASES AB High performance, cost efficient CO2 capture technologies are desired to significantly reduce CO2 emissions from large stationary sources, i.e., fossil fuel-fired power stations. Advanced processes based on solid regenerable sorbents that efficiently absorb CO2 and release it in concentrated form can be less toxic, less corrosive and economically attractive relative to commercially existing solvent-based technologies. In this study, a number of binary and ternary eutectic salt-modified lithium zirconate (Li2ZrO3) sorbents were identified and evaluated for high temperature CO2 capture. Experiments were carried out in a thermal gravimetric analyzer under isothermal conditions at temperatures between 450 and 700 T. Initial efforts at characterizing CO2 uptake with pure Li2ZrO3 powder at 500 T show the reaction rate is continuous, however, very slow with time on stream. The combination of binary alkali carbonate, binary alkali/alkaline earth carbonate, ternary alkali carbonate and ternary alkali carbonate/halide eutectics to Li2ZrO3 noticeably improves the CO2 uptake rate and CO2 sorption capacity. Binary K2CO3/MgCO3- and KF/Li2CO3-containing Li2ZrO3 powders reveal the fastest CO2 uptake rate at 500 T with respect to the unmodified Li2ZrO3 sample. Formation of a eutectic molten carbonate layer on the outer surface of reactant Li2ZrO3 particles aids in facilitating the transfer of gaseous CO2 during the sorption process. Multicycle thermogravimetric studies coupled with powder X-ray diffraction (XRD) analyses of the pure, binary and ternary eutectic salt promoted Li2ZrO3 powders illustrate the reaction between Li2ZrO3 and CO2 is reversible. The ternary K2CO3/NaF/Na2CO3 eutectic and Li2ZrO3 combination at 600 and 700 degrees C produces the fastest CO2 uptake rate and highest CO2 capacity. Reaction temperature also plays a major effect on the direct carbonation rate of the modified Li2ZrO3 samples. Published by Elsevier B.V. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Fauth, DJ (reprint author), US DOE, Natl Energy Technol Lab, POB 10940, Pittsburgh, PA 15236 USA. EM daniet.fauth@netl.doe.gov NR 19 TC 77 Z9 88 U1 2 U2 33 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3820 J9 FUEL PROCESS TECHNOL JI Fuel Process. Technol. PD OCT PY 2005 VL 86 IS 14-15 BP 1503 EP 1521 DI 10.1016/j.fuproc.2005.01.012 PG 19 WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical SC Chemistry; Energy & Fuels; Engineering GA 956MM UT WOS:000231304000008 ER PT J AU Yeh, JT Resnik, KP Rygle, K Pennline, HW AF Yeh, JT Resnik, KP Rygle, K Pennline, HW TI Semi-batch absorption and regeneration studies for CO2 capture by aqueous ammonia SO FUEL PROCESSING TECHNOLOGY LA English DT Article; Proceedings Paper CT Symposium on Carbon Dioxide Capture and Sequestration held at 227th National Meeting of the American-Chemical-Society CY MAR, 2004 CL Anaheim, CA SP Amer Chem Soc DE absorption; aqueous ammonia; CO2 scrubbing; CO2 carrying capacity; CO2 loading capacity; lean phase CO2 loading; rich phase CO2 loading AB Carbon dioxide transfer capacities of aqueous ammonia solution and monoethanolamine (MEA) solution were compared. The ammonia process for CO2 capture was simulated using a semibatch reactor, where the flow of gas is continuous. The CO2 carrying capacity in g CO2 per g of NH3 solution (8 wt.%) circulated is 0.07 as compared with 0.036 g CO2 per g MEA solution (20 wt.%). The energy requirement for liquid mass circulation of ammonia solution is approximately 50% of MEA solution for equal weight of CO2 carried. In another comparison, the thermal energy required to regenerate CO2 from the rich solution is substantially less as compared to the MEA process. A 3-cycle absorption-regeneration test was conducted in the semibatch reactor to simulate an approach-to-steady state in a flow system. pH values of the absorbent solution was found to oscillate between 9.6 (CO2-lean) and 8.8 (CO2-rich) under the test conditions. Thermodynamics study shows that ammonium bicarbonate required the least thermal energy among the ammonium compounds for CO2 regeneration. (c) 2005 Elsevier B.V. All rights reserved. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Yeh, JT (reprint author), US DOE, Natl Energy Technol Lab, POB 10940, Pittsburgh, PA 15236 USA. EM yeh@netl.doe.gov NR 11 TC 194 Z9 229 U1 9 U2 54 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3820 J9 FUEL PROCESS TECHNOL JI Fuel Process. Technol. PD OCT PY 2005 VL 86 IS 14-15 BP 1533 EP 1546 DI 10.1016/j.fuproc.2005.01.015 PG 14 WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical SC Chemistry; Energy & Fuels; Engineering GA 956MM UT WOS:000231304000010 ER PT J AU Allen, DE Strazisar, BR Soong, Y Hedges, SW AF Allen, DE Strazisar, BR Soong, Y Hedges, SW TI Modeling carbon dioxide sequestration in saline aquifers: Significance of elevated pressures and salinities SO FUEL PROCESSING TECHNOLOGY LA English DT Article; Proceedings Paper CT Symposium on Carbon Dioxide Capture and Sequestration held at 227th National Meeting of the American-Chemical-Society CY MAR, 2004 CL Anaheim, CA SP Amer Chem Soc ID CO2 SOLUBILITY; TEMPERATURES; THERMODYNAMICS; 1000-DEGREES-C; ELECTROLYTES; 0-DEGREES-C; EQUATION; SYSTEMS; GASES; WATER AB The ultimate capacity of saline formations to sequester carbon dioxide by solubility and mineral trapping must be determined by simulating sequestration with geochemical models. These models, however, are only as reliable as the data and reaction scheme on which they are based. Several models have been used to make estimates of carbon dioxide solubility and mineral formation as a function of pressure and fluid composition. Intercomparison of modeling results indicates that failure to adjust all equilibrium constants to account for elevated carbon dioxide pressures results in significant errors in both solubility and mineral formation estimates. Absence of experimental data at high carbon dioxide pressures and high salinities make verification of model results difficult. Results indicate standalone solubility models that do not take mineral reactions into account will underestimate the total capacity of aquifers to sequester carbon dioxide in the long term through enhanced solubility and mineral trapping mechanisms. Overall, it is difficult to confidently predict the ultimate sequestration capacity of deep saline aquifers using geochemical models. (c) 2005 Elsevier B.V. All rights reserved. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Allen, DE (reprint author), Salem State Coll, Dept Geol Sci, 352 Lafayette St, Salem, MA 01970 USA. EM dallen@salemstate.edu NR 20 TC 45 Z9 45 U1 0 U2 17 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3820 J9 FUEL PROCESS TECHNOL JI Fuel Process. Technol. PD OCT PY 2005 VL 86 IS 14-15 BP 1569 EP 1580 DI 10.1016/j.fuproc.2005.01.004 PG 12 WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical SC Chemistry; Energy & Fuels; Engineering GA 956MM UT WOS:000231304000012 ER PT J AU Maroto-Valer, MM Fauth, DJ Kuchta, ME Zhang, Y Andresen, JM AF Maroto-Valer, MM Fauth, DJ Kuchta, ME Zhang, Y Andresen, JM TI Activation of magnesium rich minerals as carbonation feedstock materials for CO2 sequestration SO FUEL PROCESSING TECHNOLOGY LA English DT Article; Proceedings Paper CT Symposium on Carbon Dioxide Capture and Sequestration held at 227th National Meeting of the American-Chemical-Society CY MAR, 2004 CL Anaheim, CA SP Amer Chem Soc DE carbon dioxide sequestration; mineral activation; mineral carbonation ID SERPENTINE; DISPOSAL AB Mineral carbonation, the reaction of magnesium-rich minerals such as olivine and serpentine with CO2 to form stable mineral carbonates, is a novel and promising approach to carbon sequestration. However, the preparation of the minerals prior to carbonation can be energy intensive, where some current studies have been exploring extensive pulverization of the minerals below 37 mu m, heat treatment of minerals up to 650 degrees C, prior separation Of CO2 from flue gases, and carbonation at high pressures, temperatures and long reaction times of up to 125 ann, 185 degrees C and 6 h, respectively. Thus, the objective of the mineral activation concept is to promote and accelerate carbonation reaction rates and efficiencies through surface activation to the extent that such rigorous reaction conditions were not required. The physical activations were performed with air and steam, while chemical activations were performed with a suite of acids and bases. The parent serpentine, activated serpentines, and carbonation products were characterized to determine their surface properties and assess their potential as carbonation minerals. The results indicate that the surface area of the raw serpentine, which is approximately 8 m(2)/g, can be increased through physical and chemical activation methods to over 330 m(2)/g. The chemical activations were more effective than the physical activations at increasing the surface area, with the 650 degrees C steam activated serpentine presenting a surface area of only 17 m(2)/g. Sulfuric acid was the most effective acid used during the chemical activations, resulting in surface areas greater than 330 in 2/g. Several of the samples produced underwent varying degrees of carbonation. The steam activated serpentine underwent a 60% conversion to magnesite at 155 degrees C and 126 atm in 1 h, while the parent sample only exhibited a 7% conversion. The most promising results came from the carbonation of the extracted Mg(OH)(2) solution, where, based on the amount of magnesium recovered in the precipitate after the 3.5 h reaction, the carbonation efficiency was estimated to be at least 53%. Reaction products included several hydrated magnesium carbonate compounds. The carbonation reaction was conducted at ambient temperature, 20 degrees C, and low pressure, 45 atm. (c) 2005 Elsevier B.V. All rights reserved. C1 Penn State Univ, Energy Inst, University Pk, PA 16802 USA. US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Maroto-Valer, MM (reprint author), Univ Nottingham, Sch Chem Environm & Min Engn, Univ Pk, Nottingham NG7 2RD, England. EM Mercedes.maroto-valer@nottingham.ac.uk RI Maroto-Valer, Mercedes/F-5016-2014 OI Maroto-Valer, Mercedes/0000-0003-1643-2863 NR 48 TC 113 Z9 124 U1 2 U2 36 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3820 J9 FUEL PROCESS TECHNOL JI Fuel Process. Technol. PD OCT PY 2005 VL 86 IS 14-15 BP 1627 EP 1645 DI 10.1016/j.fuproc.2005.01.017 PG 19 WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical SC Chemistry; Energy & Fuels; Engineering GA 956MM UT WOS:000231304000016 ER PT J AU Kang, QJ Tsimpanogiannis, IN Zhang, DX Lichtner, PC AF Kang, QJ Tsimpanogiannis, IN Zhang, DX Lichtner, PC TI Numerical modeling of pore-scale phenomena during CO2 sequestration in oceanic sediments SO FUEL PROCESSING TECHNOLOGY LA English DT Article; Proceedings Paper CT Symposium on Carbon Dioxide Capture and Sequestration held at 227th National Meeting of the American-Chemical-Society CY MAR, 2004 CL Anaheim, CA SP Amer Chem Soc DE oceanic CO2 sequestration; hydrate formation; pore network; Lattice Boltzmann; invasion percolation ID CRITICAL GAS SATURATION; POROUS-MEDIA; INVASION PERCOLATION; HYDRATE FORMATION; BOLTZMANN METHOD; BUBBLE-GROWTH; HEAT-TRANSFER; NETWORK; METHANE; SIMULATION AB Direct disposal of liquid CO2 on the ocean floor is one of the approaches considered for sequestering CO2 in order to reduce its concentration in the atmosphere. At oceanic depths deeper than approximately 3000 in, liquid CO2 density is higher than the density of seawater and CO2 is expected to sink and form a pool at the ocean floor. In addition to chemical reactions between CO2 and seawater to form hydrate, fluid displacement is also expected to occur within the ocean floor sediments. In this work, we consider two different numerical models for hydrate fort-nation at the pore scale. The first model consists of the Lattice Boltzmann (LB) method applied to a single-phase supersaturated solution in a constructed porous medium. The second model is based on the Invasion Percolation (IP) in pore networks, applied to two-phase immiscible displacement of seawater by liquid CO2. The pore-scale results are upscaled to obtain constitutive relations for porosity, both transverse and for the entire domain, and for permeability. We examine deposition and displacement. patterns, and changes in porosity and permeability due to hydrate formation, and how these properties depend on various parameters including a parametric study of the effect of hydrate formation kinetics. According to the simulations, the depth Of CO2 invasion in the sediments is controlled by changes in the pore-scale porosity close to the hydrate formation front. (c) 2005 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, Hydrol Geochem & Geol Grp, Los Alamos, NM 87545 USA. RP Tsimpanogiannis, IN (reprint author), Los Alamos Natl Lab, Hydrol Geochem & Geol Grp, EES-6,MS T003, Los Alamos, NM 87545 USA. EM ioannis@lanl.gov RI Zhang, Dongxiao/D-5289-2009; Kang, Qinjun/A-2585-2010 OI Zhang, Dongxiao/0000-0001-6930-5994; Kang, Qinjun/0000-0002-4754-2240 NR 38 TC 35 Z9 36 U1 2 U2 20 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3820 EI 1873-7188 J9 FUEL PROCESS TECHNOL JI Fuel Process. Technol. PD OCT PY 2005 VL 86 IS 14-15 BP 1647 EP 1665 DI 10.1016/j.fuproc.2005.02.001 PG 19 WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical SC Chemistry; Energy & Fuels; Engineering GA 956MM UT WOS:000231304000017 ER PT J AU Ulbricht, A Duchateau, JL Fietz, WH Ciazynski, D Fillunger, H Fink, S Heller, R Maix, R Nicollet, S Raff, S Ricci, M Salpietro, E Zahn, G Zanino, R Bagnasco, M Besette, D Bobrov, E Bonicelli, T Bruzzone, P Darweschsad, MS Decool, P Dolgetta, N della Corte, A Formisano, A Grunhagen, A Hertout, P Herz, W Huguet, M Hurd, F Ilyin, Y Komarek, P Libeyre, P Marchese, V Marinucci, C Martinez, A Martone, R Martovetsky, N Michael, P Mitchell, N Nijhuis, A Nother, G Nunoya, Y Polak, M Portone, A Richard, LS Spadoni, M Susser, M Turtu, S Vostner, A Takahashi, Y Wuchner, F Zani, L AF Ulbricht, A Duchateau, JL Fietz, WH Ciazynski, D Fillunger, H Fink, S Heller, R Maix, R Nicollet, S Raff, S Ricci, M Salpietro, E Zahn, G Zanino, R Bagnasco, M Besette, D Bobrov, E Bonicelli, T Bruzzone, P Darweschsad, MS Decool, P Dolgetta, N della Corte, A Formisano, A Grunhagen, A Hertout, P Herz, W Huguet, M Hurd, F Ilyin, Y Komarek, P Libeyre, P Marchese, V Marinucci, C Martinez, A Martone, R Martovetsky, N Michael, P Mitchell, N Nijhuis, A Nother, G Nunoya, Y Polak, M Portone, A Richard, LS Spadoni, M Susser, M Turtu, S Vostner, A Takahashi, Y Wuchner, F Zani, L TI The ITER toroidal field model coil project SO FUSION ENGINEERING AND DESIGN LA English DT Review DE ITER; TFMC; EDA ID CURRENT SHARING TEMPERATURE; T-CS TESTS; M-AND-M; IN-CONDUIT CONDUCTORS; EURATOM LCT COIL; AC LOSS; FORSCHUNGSZENTRUM-KARLSRUHE; PERFORMANCE EVALUATION; INSULATION SYSTEM; FUSION MAGNETS AB The ITER toroidal field model coil (TFMC) was designed, constructed and tested by the European Home Team in the framework of the ITER research and development program of the Engineering Design Activities (EDA). The project was performed under the leadership of European Fusion Development Activity/Close Support Unit (EFDA/CSU), Ciarching. in collaboration with the European superconductor laboratories and the European industry. The TFMC wits developed and constructed in collaboration with the European industry consortium (AGAN) and Europa Metalli LMI supplied the conductor, The TFMC was tested in the test phase I as single coil and in phase 11 in the background field of the EURATOM LCT coil in the TOSKA facility of the Forschungszentrum Karlsruhe. In phase 1, the TFMC achieved an ITER TF coil relevant current of about 80kA and further representative test results before the end of the EDA. In the more complex test phase [I. the coil was exposed to ITER TF coil relevant mechanical stresses in the winding pack and case. The tests confirmed that engineering design principles and manufacturing procedures are sound and suitable for the ITER TF full size coils. The electromagnetic. thermo hydraulic and mechanical operation parameters agree well with predictions. The achieved Lorentz force on the conductor was about 800 kN/m. That has been equivalent to the Lorentz forces in ITER TF coils. (c) 2005 Elsevier B.V. All fights reserved. C1 EURATOM, Forschungszentrum Karlsruhe, Inst Tech Phys, D-76366 Eggenstein Leopoldshafen, Germany. EURATOM, CEA, DRFC, Cadarache, France. Vienna Univ Technol, EURATOM Assoc, OAW, ATI, Vienna, Austria. EURATOM, CSU, EFDA, IPP, Garching, Germany. Lawrence Livermore Natl Lab, Livermore, CA USA. EURATOM, Forschungszentrum Karlsruhe, Inst Reaktorsicherheit, Karlsruhe, Germany. Univ Naples 2, Dip Ing Informaz, I-81031 Aversa, CE, Italy. Politecn Torino, Dipartimento Energet, I-10129 Turin, Italy. EURATOM, CRPP, Villigen, Switzerland. ITER JWS, Naka, Ibaraki, Japan. JAERI, Naka, Ibaraki, Japan. Univ Twente, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands. MIT, Plasma Sci & Fus Ctr, Boston, MA USA. EURATOM, Forschungszentrum Karlsruhe, Inst Med & Biophys, Karlsruhe, Germany. Univ Naples 2, Dipartimento Ingn Informaz, Naples, Italy. Inst Elect Engn, Bratislava, Slovakia. RP Fietz, WH (reprint author), EURATOM, Forschungszentrum Karlsruhe, Inst Tech Phys, Herman Helmholtz Pl 1, D-76366 Eggenstein Leopoldshafen, Germany. EM walter.fietz@itp.fzk.de RI Formisano, Alessandro/F-2841-2012; OI Formisano, Alessandro/0000-0002-7007-5759; Martone, Raffaele/0000-0002-5675-5491; Michael, Philip/0000-0003-4906-6169 NR 161 TC 79 Z9 79 U1 2 U2 11 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD OCT PY 2005 VL 73 IS 2-4 BP 189 EP 327 DI 10.1016/j.fusengdes.2005.07.002 PG 139 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 987LV UT WOS:000233520300011 ER PT J AU Boivin, RL Luxon, JL Austin, ME Brooks, NH Burrell, KH Doyle, EJ Fenstermacher, ME Gray, DS Groth, M Hsieh, CL Jayakumar, RJ Lasnier, CJ Leonard, AW McKee, GR Moyer, RA Rhodes, TL Rost, IC Rudakov, DL Schaffer, MJ Strait, EI Thomas, DM Van Zeeland, M Watkins, JG Watson, GW West, WP Wong, CPC AF Boivin, RL Luxon, JL Austin, ME Brooks, NH Burrell, KH Doyle, EJ Fenstermacher, ME Gray, DS Groth, M Hsieh, CL Jayakumar, RJ Lasnier, CJ Leonard, AW McKee, GR Moyer, RA Rhodes, TL Rost, IC Rudakov, DL Schaffer, MJ Strait, EI Thomas, DM Van Zeeland, M Watkins, JG Watson, GW West, WP Wong, CPC TI DIII-D diagnostic systems SO FUSION SCIENCE AND TECHNOLOGY LA English DT Review DE diagnostics; DIII-D; tokamak ID EXCHANGE RECOMBINATION SPECTROSCOPY; DENSITY PROFILE MEASUREMENTS; BEAM EMISSION-SPECTROSCOPY; RADIAL ELECTRIC-FIELD; CO2 INTERFEROMETER OPERATION; DIVERTOR THOMSON SCATTERING; PLASMA ION TEMPERATURE; L-H TRANSITION; D TOKAMAK; POLOIDAL ROTATION AB The DIII-D tokamak, located at General Atomics in San Diego, California, has long been recognized as being one of the best diagnosed magnetic fusion experiments. Composed of more than 50 individual systems, the diagnostic set takes advantage of a high number of large aperture access ports. These instruments are used in support of basic control of the tokamak and experiments in the transport, stability, boundary and heating, and current drive science areas. These systems have contributed to the success of the Advanced Tokamak program, in addition to the many contributions to our physics understanding and real-time control of fusion-relevant plasmas. Numerous novel techniques have been developed, tested, and fielded on DIII-D including new approaches required for a burning plasma experiment. Details of the diagnostic systems will be described along with some illustrative recent results. C1 Univ Texas, Austin, TX 78712 USA. Univ Calif Los Angeles, Los Angeles, CA USA. Lawrence Livermore Natl Lab, Los Angeles, CA USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Wisconsin, Madison, WI USA. MIT, Cambridge, MA 02139 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ Calif Irvine, Irvine, CA USA. RP Boivin, RL (reprint author), Univ Texas, Austin, TX 78712 USA. EM boivin@fusion.gat.com RI Groth, Mathias/G-2227-2013 NR 119 TC 7 Z9 7 U1 0 U2 6 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 1536-1055 J9 FUSION SCI TECHNOL JI Fusion Sci. Technol. PD OCT PY 2005 VL 48 IS 2 BP 834 EP 851 PG 18 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 970GY UT WOS:000232294500005 ER PT J AU Jayakumar, RJ Allen, SL Burrell, KH Lao, LL Makowski, MA Petty, CC Thomas, DM AF Jayakumar, RJ Allen, SL Burrell, KH Lao, LL Makowski, MA Petty, CC Thomas, DM TI Current profile measurement on the DIII-D tokamak SO FUSION SCIENCE AND TECHNOLOGY LA English DT Article DE current profile; diagnostics; tokamak ID MAGNETIC SHEAR; CURRENT DRIVE; PERFORMANCE; PLASMAS; DISCHARGES; TRANSPORT; FIELD; POLARIMETRY AB The measurement of the plasma current profile is crucial to many operating regimes and investigations on the DIII-D tokamak. The measurement is required to obtain accurate equilibria and to accurately calculate stability and transport characteristics of the plasma. The measurement of the profile is also required to obtain the different components of the current to guide efforts on the control of the current profile and experiments toward obtaining steady-state operating regimes. The edge current profile measurement is necessary to understand the formation of edge pedestal and edge-localized modes. The DIII-D tokamak has a three-array, 45-channel motional Stark effect (MSE) diagnostic to measure the plasma current density and radial electric field. A 32-channel lithium-beam (Li-beam) diagnostic has recently been installed on the DIII-D tokamak for the measurement of edge current density. Both diagnostics measure the current profile from the measurement of the pitch angle of the magnetic field that, in turn, is derived from the orientation angle of polarization of the appropriate neutral beam spectral line. The MSE and the Li-beam diagnostics are described, and some examples of measurements are shown. C1 Gen Atom, San Diego, CA 92186 USA. Lawrence Livermore Natl Lab, Livermore, CA USA. RP Jayakumar, RJ (reprint author), Gen Atom, POB 85608, San Diego, CA 92186 USA. EM Jay.Jayakumar@gat.com NR 46 TC 12 Z9 12 U1 1 U2 3 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 1536-1055 J9 FUSION SCI TECHNOL JI Fusion Sci. Technol. PD OCT PY 2005 VL 48 IS 2 BP 852 EP 863 PG 12 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 970GY UT WOS:000232294500006 ER PT J AU Lao, LL St John, HE Peng, Q Ferron, JR Strait, EJ Taylor, TS Meyer, WH Zhang, C You, KI AF Lao, LL St John, HE Peng, Q Ferron, JR Strait, EJ Taylor, TS Meyer, WH Zhang, C You, KI TI MHD equilibrium reconstruction in the DIII-D tokamak SO FUSION SCIENCE AND TECHNOLOGY LA English DT Article DE equilibrium reconstruction; tokamak data analysis; MHD equilibrium ID SPHERICAL TORUS EXPERIMENT; CIRCULAR CROSS-SECTION; RADIAL ELECTRIC-FIELD; ALCATOR-C-MOD; MAGNETIC DIAGNOSTICS; CURRENT PROFILES; CURRENT DRIVE; PLASMAS; DISCHARGES; STABILITY AB Physics elements and advances crucial for the development of axisymmetric magnetohydrodynamic equilibrium reconstruction to support plasma operation and data analysis in the DIII-D tokamak are reviewed. A response function formalism and a Picard linearization scheme are used to efficiently combine the equilibrium and the fitting iterations and search for the optimum solution vector. Algorithms to incorporate internal current and pressure profile measurements, topological constraints, and toroidal plasma rotation into the equilibrium reconstruction are described. Choice of basis functions and boundary conditions essential for accurate reconstruction of L- and H-mode equilibrium plasma boundary and current and pressure profiles is discussed. The computational structure used to efficiently integrate these elements into the equilibrium reconstruction code EFIT is summarized. C1 Gen Atom, San Diego, CA 92186 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Chinese Acad Sci, Inst Plasma Phys, Hefei, Anhui, Peoples R China. Korean Basic Sci Inst, Natl Fus Res Ctr, Taejon, South Korea. RP Lao, LL (reprint author), Gen Atom, POB 85608, San Diego, CA 92186 USA. EM lao@fusion.gat.com NR 36 TC 101 Z9 104 U1 2 U2 16 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 1536-1055 J9 FUSION SCI TECHNOL JI Fusion Sci. Technol. PD OCT PY 2005 VL 48 IS 2 BP 968 EP 977 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 970GY UT WOS:000232294500014 ER PT J AU Groebner, RJ Osborne, TH Fenstermacher, ME Leonard, AW Mahdavi, MA Moyer, RA Owen, LW Porter, GD Snyder, PB Stangeby, PC Rhodes, TL Wolf, NS AF Groebner, RJ Osborne, TH Fenstermacher, ME Leonard, AW Mahdavi, MA Moyer, RA Owen, LW Porter, GD Snyder, PB Stangeby, PC Rhodes, TL Wolf, NS TI Pedestal studies in DIII-D SO FUSION SCIENCE AND TECHNOLOGY LA English DT Article DE pedestal; H-mode barrier; edge physics ID HIGH-CONFINEMENT MODE; HEATED DIVERTOR DISCHARGES; L-H TRANSITION; ALCATOR C-MOD; D TOKAMAK; ASDEX UPGRADE; ELECTRIC-FIELD; EDGE; PLASMA; TRANSPORT AB Studies of the H-mode pedestal in the DIII-D tokamak are presented. The global energy confinement increases as the plasma pressure on top of the pedestal increases. The best empirical description for a pedestal width parameter is Delta pe alpha (beta(pol)(PED))(0.4), where Delta(pe) is the M is width of the electron pressure pedestal and beta(pol)(PED) the poloidal beta at the top of the pedestal. The edge profiles of electron density ne, electron temperature T-e, and ion temperature T-i can all have different shapes. Thus, a simple width scaling for the edge might not exist, and studies of the physics of individual profiles have been initiated. A model for the ne profile, based on self-consistent treatment of edge particle sources and edge particle transport, agrees with several experimental observations. The steep gradient region for the Te profile often extends farther into the plasma than the n(e) pedestal step. Magnetohydrodynamic stability pro fides the ultimate limits to the evolution of the pedestal and usually leads to edge instabilities called edge-localized modes (ELMs). However, the absence of ELMs in c: regime called the Quiescent H-mode shows that large pedestals can be produced without ELMs. C1 Gen Atom, San Diego, CA 92186 USA. Lawrence Livermore Natl Lab, Livermore, CA USA. Univ Calif San Diego, San Diego, CA 92103 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Toronto, Toronto, ON, Canada. Univ Calif Los Angeles, Los Angeles, CA USA. RP Groebner, RJ (reprint author), Gen Atom, POB 85608, San Diego, CA 92186 USA. EM groebner@fusion.gat.com NR 54 TC 9 Z9 9 U1 0 U2 2 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 1536-1055 J9 FUSION SCI TECHNOL JI Fusion Sci. Technol. PD OCT PY 2005 VL 48 IS 2 BP 1011 EP 1020 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 970GY UT WOS:000232294500018 ER PT J AU Maingi, R Mahdavi, MA AF Maingi, R Mahdavi, MA TI Review of DIII-D H-mode density limit studies SO FUSION SCIENCE AND TECHNOLOGY LA English DT Article DE density limit; MARFE; fueling ID DETACHED RADIATIVE DIVERTOR; GOOD ENERGY CONFINEMENT; PELLET INJECTION; PLASMA-DENSITY; DISCHARGES; OPERATION; PHYSICS; EFFICIENCY; TOKAMAKS; FUSION AB Density limit studies over the past 10 yr on DIII-D have successfully identified several processes that limit plasma density in various operating modes. The recent focus of these studies has been on maintenance of the high-density operational window with good H-mode level energy confinement. We find that detachment and onset of multifaceted axisymmetric radiation from the edge (MARFE), fueling efficiency, particle confinement, and magnetohydrodynamic activity can impose density limits in certain regimes. By studying these processes, we have devised techniques with either pellets or gas fueling and divertor pumping to achieve line average density above Greenwald scaling, relying on increasing the ratio of pedestal to separatrix density, as well as density profile peaking. The scaling of several of these processes to next-step devices (e.g., the International Thermonuclear Experimental Reactor) has indicated that sufficiently high pedestal density can be achieved with conventional fueling techniques while ensuring divertor partial detachment needed for heat flux reduction. One density limit process requiring further study is neoclassical tearing mode (NTM) onset, and techniques for avoidance/mitigation of NTMs need additional development in present-day devices operated at high density. C1 Gen Atom Co, San Diego, CA 92186 USA. RP Maingi, R (reprint author), Oak Ridge Natl Lab, POB 2009, Oak Ridge, TN 37831 USA. EM rmaingi@pppl.gov NR 39 TC 5 Z9 5 U1 0 U2 2 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 1536-1055 J9 FUSION SCI TECHNOL JI Fusion Sci. Technol. PD OCT PY 2005 VL 48 IS 2 BP 1117 EP 1126 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 970GY UT WOS:000232294500026 ER PT J AU Porter, GD Rognlien, TD Rensink, ME Wolf, NS Stangeby, PC AF Porter, GD Rognlien, TD Rensink, ME Wolf, NS Stangeby, PC TI Developing models for the DIII-D boundary plasma SO FUSION SCIENCE AND TECHNOLOGY LA English DT Article DE edge plasma; transport modeling; divertors ID DIVERTOR THOMSON SCATTERING; TOKAMAK EDGE PLASMAS; SCRAPE-OFF LAYER; UEDGE CODE; TRANSPORT SIMULATIONS; RADIATIVE DIVERTOR; PARTICLE CONTROL; H TRANSITION; X-POINT; TURBULENCE AB Development of the comprehensive codes used to study the boundary region of the DIII-D tokamak has been done in parallel with improvement of the diagnostics of this important region of the plasma. These codes have been used to interpret the diagnostic data and to assist in the design of improved divertor configurations. The development of codes used for analysis on DIII-D is described briefly. Model validation by comparing with the extensive DIII-D boundary region diagnostic data is also discussed. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Porter, GD (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM porter2@llnl.gov NR 74 TC 5 Z9 5 U1 1 U2 2 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 1536-1055 J9 FUSION SCI TECHNOL JI Fusion Sci. Technol. PD OCT PY 2005 VL 48 IS 2 BP 1127 EP 1140 PG 14 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 970GY UT WOS:000232294500027 ER PT J AU Wade, MR Luce, TC Jayakumar, J Politzer, PA Petty, CC Murakami, M Ferron, JR Hyatt, AW Sips, ACC AF Wade, MR Luce, TC Jayakumar, J Politzer, PA Petty, CC Murakami, M Ferron, JR Hyatt, AW Sips, ACC TI Hybrid scenario development in DIII-D SO FUSION SCIENCE AND TECHNOLOGY LA English DT Article DE tokamak; ITER; steady-state operation ID HIGH-PERFORMANCE DISCHARGES; H-MODE DISCHARGES; D TOKAMAK; PROFILE CONTROL; ASDEX UPGRADE; PLASMAS; TRANSPORT; BETA; STABILIZATION; SUSTAINMENT AB Experiments in the DIII-D tokamak have demonstrated the ability to sustain ELMing H-mode discharges with high beta and good confinement quality under stationary conditions. These experiments have shown the ability to sustain normalized fusion performance (in terms of beta N H-89P/q(95)(2) at or above that projectedfor Q(fus) = 10 operation in the International Thermonuclear Experimental Reactor (ITER) design over a wide range in operating parameters. In the best cases, operation is maintained at the free boundary, n = I stability limit. Confinement is found to be better than standard H-mode confinement scalings over a wide range in operation space, and experimentally measured transport is consistent with predictions from the GLF23 transport code. Projections using the standard ITER H-mode scaling laws based on these discharges indicate that Q(fus) = 5 can be maintained for > 5400 s in ITER at q(95) = 4.5 while Q(fus) = 40 can be obtained for similar to 2400 s at q(95) = 3.2. These projected performance levels further validate the ITER design and suggest that long-pulse, high neutron fluence operation as well as very high fusion gain operation may be possible in next-generation tokamaks. C1 Gen Atom Co, San Diego, CA 92186 USA. RP Wade, MR (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM wade@fusion.gat.com NR 31 TC 5 Z9 5 U1 0 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 1536-1055 J9 FUSION SCI TECHNOL JI Fusion Sci. Technol. PD OCT PY 2005 VL 48 IS 2 BP 1199 EP 1211 PG 13 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 970GY UT WOS:000232294500033 ER PT J AU Hovland, P Norris, B Smith, B AF Hovland, P Norris, B Smith, B TI Making automatic differentiation truly automatic: coupling PETSc with ADIC SO FUTURE GENERATION COMPUTER SYSTEMS LA English DT Article DE automatic; differentiation; ADIC; PETSc; derivatives ID EQUATIONS AB Despite its name, automatic differentiation (AD) is often far from an automatic process. Often one must specify independent and dependent variables, indicate the derivative quantities to be computed, and perhaps even provide information about the structure of the Jacobians or Hessians being computed. When AD is used in conjunction with a toolkit with well-defined interfaces, however, many of these issues can be dealt with automatically. We describe recent research into coupling the ADIC automatic differentiation tool with PETSc, a toolkit for the parallel numerical solution of PDEs. This research leverages the interfaces and objects of PETSc to make the AD process very nearly invisible. (c) 2004 Published by Elsevier B.V. C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Hovland, P (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM hovland@mcs.anl.gov; norris@mcs.anl.gov; bsmith@mcs.anl.gov OI Smith, Barry/0000-0001-5955-8111; Norris, Boyana/0000-0001-5811-9731 NR 18 TC 3 Z9 3 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-739X J9 FUTURE GENER COMP SY JI Futur. Gener. Comp. Syst. PD OCT PY 2005 VL 21 IS 8 BP 1426 EP 1438 DI 10.1016/j.future.2004.11.008 PG 13 WC Computer Science, Theory & Methods SC Computer Science GA 964DV UT WOS:000231859800019 ER PT J AU Nachtegaal, M Marcus, MA Sonke, JE Vangronsveld, J Livi, KJT Van der Lelie, D Sparks, DL AF Nachtegaal, M Marcus, MA Sonke, JE Vangronsveld, J Livi, KJT Van der Lelie, D Sparks, DL TI Effects of in situ remediation on the speciation and bioavailability of zinc in a smelter contaminated soil SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID PRINCIPAL COMPONENT ANALYSIS; SELECTIVE SEQUENTIAL EXTRACTIONS; RAY-ABSORPTION SPECTROSCOPY; QUANTITATIVE ZN SPECIATION; EXAFS SPECTROSCOPY; LEAD IMMOBILIZATION; ALCALIGENES-EUTROPHUS; METAL IMMOBILIZATION; SURFACE COMPLEXATION; SORPTION MECHANISMS AB We report results from an extensive study on the speciation of zinc (Zn) and its relation to the mobility and bioavailablity of this element in a smelter contaminated soil and an in situ remediated area of this soil 12 yr after the application of cyclonic ash and compost. Emphasis was placed on the role of neoformed precipitates in controlling Zn speciation, mobility and bioavailability under different environmental conditions. Twelve years after remediation, the pH of the treated and non-treated soil differed by only 0.5 pH unit. Using state-of-the-art electron and X-ray microscopies in combination with micro-focused extended X-ray absorption fine structure (mu-EXAFS) spectroscopy, no major differences in Zn speciation were found between samples of the treated and non-treated soil. In both soils, 30% to 50% of Zn was present in smelter related minerals (willemite, hemimorphite or gahnite), while 50% to 70% of Zn was incorporated into newly formed Zn precipitates. Contrary to the non-treated soil, the treated soil did not contain gahnite or sphaterite; it is possible that these minerals were dissolved under the higher pH conditions at the time of treatment. Desorption experiments, using a stirred flow technique with a 0.1 mol/L CaCl2 (pH 6.5) and a HNO3 (pH 4.0) solution were employed to determine the exchangeable Zn fraction and the Zn fraction which will be mobilized under more extreme weathering conditions, respectively. No significant differences were found in desorption behavior between the treated vs. non-treated soil. Bioavailability tests, using the R. metallidurans AE1433 biosensor showed that similar to 8% of total Zn was bioavailable in both the treated and non-treated soils. It was concluded that the incorporation of Zn into newly formed precipitates in both the treated and non treated soils leads to a significant natural attenuation of the exchangeable/bioavailable Zn fraction at near neutral pH conditions. At lower pHs, conditions not favorable to the formation of Zn precipitates, the pool of Zn associated with the secondary Zn precipitates is potentially more bioavailable. Copyright (c) 2005 Elsevier Ltd. C1 Univ Delaware, Dept Plant & Soil Sci, Newark, DE 19717 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Geochem Div, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA. Limburgs Univ Ctr, B-3590 Diepenbeek, Belgium. Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA. 463 Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Nachtegaal, M (reprint author), Paul Scherrer Inst, Swiss Light Source, Off WGLA-219, CH-5232 Villigen, Switzerland. EM maarten.nachtegaal@psi.ch RI Sonke, Jeroen/A-2444-2010; Nachtegaal, Maarten/A-9709-2010; OI Nachtegaal, Maarten/0000-0003-1895-9626 NR 71 TC 66 Z9 67 U1 2 U2 22 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD OCT 1 PY 2005 VL 69 IS 19 BP 4649 EP 4664 DI 10.1016/j.gca.2005.05.019 PG 16 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 974JH UT WOS:000232587100005 ER PT J AU Mazeina, L Ushakov, SV Navrotsky, A Boatner, LA AF Mazeina, L Ushakov, SV Navrotsky, A Boatner, LA TI Formation enthalpy of ThSiO4 and enthalpy of the thorite -> huttonite phase transition SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID SOLUTION CALORIMETRY; LOW-TEMPERATURES; HIGH-PRESSURES; GROUP MINERALS; THORITE-GROUP; NEW-MEXICO; ZIRCON; HUTTONITE; URANIUM; CHEMISTRY AB The standard enthalpy of formation of thorite and huttonite and the enthalpy of the phase transition between these polymorphs were determined using high-temperature oxide melt solution calorimetry and transposed temperature drop calorimetry. Standard enthalpies of formation of thorite and huttonite are reported for the first time and are -2117.6 +/- 4.2 kJ/mol and -2110.9 +/- 4.7 kJ/mol, respectively. Based on our measurements, thorite and huttonite are metastable relative to SiO2 (quartz) and ThO2 (thorianite) at standard conditions, but are presumably stabilized at high temperature by the entropy contribution. Based on the measured enthalpy of the thorite-huttonite phase transition of 6.7 +/- 2.5 kJ/mol, a dP/dT slope for the transformation was calculated as -1.21 +/- 0.45 MPa/K. Copyright (c) 2005 Elsevier Ltd. C1 Univ Calif Davis, Thermochem Facil, Davis, CA 95616 USA. Univ Calif Davis, NEAT ORU, Davis, CA 95616 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Navrotsky, A (reprint author), Univ Calif Davis, Thermochem Facil, Davis, CA 95616 USA. EM anavrotsky@ucdavis.edu RI Ushakov, Sergey/C-5501-2008; Ushakov, Sergey/I-7278-2012; Boatner, Lynn/I-6428-2013; OI Boatner, Lynn/0000-0002-0235-7594; Ushakov, Sergey/0000-0002-8184-8884 NR 63 TC 27 Z9 28 U1 3 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD OCT 1 PY 2005 VL 69 IS 19 BP 4675 EP 4683 DI 10.1016/j.gca.2005.03.053 PG 9 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 974JH UT WOS:000232587100007 ER PT J AU Patton, HJ Schlittenhardt, J AF Patton, HJ Schlittenhardt, J TI A transportable m(b)(Lg) scale for central Europe and implications for low-magnitude M-s-m(b) discrimination SO GEOPHYSICAL JOURNAL INTERNATIONAL LA English DT Article DE central Europe; GRF array; GRSN; M-s-m(b) discrimination; regional phase Lg; seismic magnitudes ID UNDERGROUND NUCLEAR-EXPLOSIONS; NEVADA TEST-SITE; SURFACE-WAVE MAGNITUDE; EASTERN NORTH-AMERICA; M-S; ATTENUATION; YIELD; LG; EARTHQUAKES; REGIONS AB We have extended the m(b)(Lg) method of Nuttli using root-mean-square (rms) amplitudes corrected for noise and a Delta(-1) dependence for geometrical spreading. Lg waves recorded on the German Regional Seismic Network (GRSN) for earthquakes in south-central Europe were used to develop an m(b)(Lg) formula requiring a new calibration constant C-rms to keep rms m(b)(Lg) on the same baseline as Nuttli's traditional formula based on 3rd-peak amplitudes. GRSN stations had to be calibrated for site terms and for Lg attenuation. Lateral variations in LgQ appear to be significant across the study area, and a regional Q model consisting of constant-Q partitions north, south and in the central Alps was developed using measurements based on interstation and two-event, single-station methods. When plotted against surface wave estimates of M-w, rms m(b)(Lg) measurements in central Europe are found to be consistent with M-w-m(b)(Lg) relationships for north America and southern Asia, thus supporting the transportability of our m(b)(Lg) formula. Frequency-wavenumber processing of Grafenberg Array data enabled us to extract Rayleigh waves for small events, and regional M-s were measured using the Marshall and Basham formula. Our M-s-m(b)(Lg) relationship extends to M-s 2.5 and agrees well with observations in other regions including the western United States. The discrimination potential of M-s-m(b)(Lg) observations was examined under realistic monitoring conditions, where path corrections were inferred from earthquake data and applied uniformly to natural sources and explosions. Under these conditions, m(b)(Pn, P) are greater than m(b)(Lg) for large NTS explosions; however, M-s-m(b) scaling slopes are steeper for P waves than they are for Lg, and M-s-m(b) observations for NTS explosions converge near m(b) 4. Thus, allowing for measurement errors and additional uncertainty in m(b)(Pn) due to regional bias, there is little difference in the discrimination potential for Pn and Lg waves at small magnitudes. As such, a regional M-s-m(b) discriminant based on Lg might be preferred owing to the better detectability of Lg waves for small earthquakes. These results need to be confirmed for explosions at other test sites. Compared to teleseismic experience, regional M-s-m(b) observations extend the discrimination capability to lower magnitudes by at least one M-s unit. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Fed Inst Geosci & Nat Resources BGR, D-30655 Hannover, Germany. RP Patton, HJ (reprint author), Los Alamos Natl Lab, Mailstop F665, Los Alamos, NM 87545 USA. EM patton@lanl.gov; j.schlittenhardt@bgr.de NR 41 TC 9 Z9 9 U1 0 U2 3 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0956-540X J9 GEOPHYS J INT JI Geophys. J. Int. PD OCT PY 2005 VL 163 IS 1 BP 126 EP 140 DI 10.1111/j.1365-246X.2005.02663.x PG 15 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 964EL UT WOS:000231861400011 ER PT J AU Zhang, R Zhang, RG Poustovoitov, MV Ye, XF Santos, HA Chen, W Daganzo, SM Erzberger, JP Serebriiskii, IG Canutescu, AA Dunbrack, RL Pehrson, JR Berger, JM Kaufman, PD Adams, PD AF Zhang, R Zhang, RG Poustovoitov, MV Ye, XF Santos, HA Chen, W Daganzo, SM Erzberger, JP Serebriiskii, IG Canutescu, AA Dunbrack, RL Pehrson, JR Berger, JM Kaufman, PD Adams, PD TI Formation of macroH2A-containing senescence associated heterochromatin foci (SAHF) and senescence driven by ASF1A and HIRA SO GERONTOLOGIST LA English DT Meeting Abstract C1 Fox Chase Canc Ctr, Philadelphia, PA 19111 USA. Russian State Med Univ, Moscow 117437, Russia. Univ Penn, Sch Vet Med, Philadelphia, PA 19104 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU GERONTOLOGICAL SOCIETY AMER PI WASHINGTON PA 1275 K STREET NW SUITE 350, WASHINGTON, DC 20005-4006 USA SN 0016-9013 J9 GERONTOLOGIST JI Gerontologist PD OCT PY 2005 VL 45 SI 2 BP 46 EP 46 PG 1 WC Gerontology SC Geriatrics & Gerontology GA 988QF UT WOS:000233615000118 ER PT J AU Moeller, DW Ryan, MT Sung, LSC Cherry, RN AF Moeller, DW Ryan, MT Sung, LSC Cherry, RN TI Impacts of stable element intake on C-14 and I-129 dose estimates SO HEALTH PHYSICS LA English DT Article DE C-14; I-129; waste disposal; dose assessment AB The purpose of this study was to evaluate and provide insights related to the influence of the intake of stable isotopes of carbon and iodine on the committed doses due to the ingestion of C-14 and I-129. This was accomplished through the application of two different computational approaches. The first was based on the assumption that ground (drinking) water was the only source of intake of C-14 and I-129, as well as stable carbon and stable iodine. In the second, the intake of C-14 and I-129 was still assumed to be restricted to that in the ground (drinking) water, but the intake of stable carbon and stable iodine was expanded to include that in other components of the diet. The doses were estimated using either a conversion formula or the applicable dose coefficients in Federal Guidance Reports No. 11 and No. 13. Serving as input for the analyses was the estimated maximum concentrations of C or I-129 that would be present in the ground water due to potential releases from the proposed Yucca Mountain high-level radioactive waste repository during the first 10,000 y after closure. The estimated contributions of stable carbon and iodine through the consumption of ground water were based on analyses of samples collected in the Amargosa Valley, NV. The contributions through dietary intake were based on surveys conducted in the United States. Based on the accompanying analyses, it was noted that stable isotope intake has a significant effect on the estimated doses due to the intake of radioactive isotopes of the same element. While this is a well-known fact, this observation has international implications in terms of dose estimates for key radionuclides, such as C-14 and I-129, a primary reason being the wide variations in the intakes of stable carbon and iodine in various countries. For this reason, analysts planning to apply the dose coefficients developed by the International Commission on Radiological Protection (ICRP) should either confirm that the average total intake in their country of stable isotope(s) of the radioactive isotope being evaluated is in reasonable agreement with the value assumed by the ICRP or suitably modify the ICRP dose coefficients to account for any differences. If such a procedure is to be implemented, there is a need for periodic updates of the dietary intakes of various stable elements in countries throughout the world. The importance of this is documented by recent surveys in Asia that revealed that their average total daily intake of stable iodine was less than half of the ICRP value for Reference Man. In this case, application of the ICRP dose coefficients, without modification, would underestimate the dose due to ingested I-129 by a factor of more than two. A related situation exists in the United States where the latest surveys indicate that the daily intake of stable iodine is 75% of the ICRP value. C1 Dade Moeller & Associates Inc, New Bern, NC 28562 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Dade Moeller & Associates Inc, Fairfax, VA 22031 USA. RP Moeller, DW (reprint author), Dade Moeller & Associates Inc, 257 River Isl Rd, New Bern, NC 28562 USA. EM dademoeller@cconnect.net NR 14 TC 4 Z9 4 U1 1 U2 2 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD OCT PY 2005 VL 89 IS 4 BP 349 EP 354 DI 10.1097/01.HP.0000164519.03575.80 PG 6 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA 966SG UT WOS:000232040900007 PM 16155456 ER PT J AU Diamond, D Jacobs, JM Chan, EY Gritsenko, MA Proll, SC Camp, DG Carithers, RL Smith, RD Katze, MG AF Diamond, D Jacobs, JM Chan, EY Gritsenko, MA Proll, SC Camp, DG Carithers, RL Smith, RD Katze, MG TI Proteomics of hepatitis C: Comparative studies of liver biopsies reveal protein expression changes associated with fibrosis progression SO HEPATOLOGY LA English DT Meeting Abstract CT 56th Annual Meeting of the American-Association-for-the-Study-of-Liver-Diseases CY NOV 11-15, 2005 CL San Francisco, CA SP Amer Assoc Study Liver Dis C1 Univ Washington, Seattle, WA 98195 USA. Pacific NW Natl Lab, Richland, WA USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 0 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0270-9139 J9 HEPATOLOGY JI Hepatology PD OCT PY 2005 VL 42 IS 4 SU 1 BP 543A EP 543A PG 1 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 972VC UT WOS:000232480301423 ER PT J AU Yusim, K Tao, N Agrawal, A Calef, C Szinger, J Korber, B Kuiken, C AF Yusim, K Tao, N Agrawal, A Calef, C Szinger, J Korber, B Kuiken, C TI HCV immunology database as a tool to facilitate HCV research SO HEPATOLOGY LA English DT Meeting Abstract CT 56th Annual Meeting of the American-Association-for-the-Study-of-Liver-Diseases CY NOV 11-15, 2005 CL San Francisco, CA SP Amer Assoc Study Liver Dis C1 Los Alamos Natl Lab, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0270-9139 J9 HEPATOLOGY JI Hepatology PD OCT PY 2005 VL 42 IS 4 SU 1 BP 561A EP 561A PG 1 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 972VC UT WOS:000232480301469 ER PT J AU Dahari, H Ribeiro, RM Perelson, AS AF Dahari, H Ribeiro, RM Perelson, AS TI Mathematical modeling of intracellular subgenomic HCV RNA kinetics during treatment in HUH-7 cells SO HEPATOLOGY LA English DT Meeting Abstract CT 56th Annual Meeting of the American-Association-for-the-Study-of-Liver-Diseases CY NOV 11-15, 2005 CL San Francisco, CA SP Amer Assoc Study Liver Dis C1 Los Alamos Natl Lab, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0270-9139 J9 HEPATOLOGY JI Hepatology PD OCT PY 2005 VL 42 IS 4 SU 1 BP 564A EP 564A PG 1 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 972VC UT WOS:000232480301477 ER PT J AU Dahari, H Ribeiro, RM Zeremski, M Licholai, T Haller, I Perelson, AS Talai, AH AF Dahari, H Ribeiro, RM Zeremski, M Licholai, T Haller, I Perelson, AS Talai, AH TI Modeling ribavirin pharmacokineticsin HIV-1/HCV-coinfected patients predicts higher intracellular ribavirin concentration in sustained viral responders SO HEPATOLOGY LA English DT Meeting Abstract CT 56th Annual Meeting of the American-Association-for-the-Study-of-Liver-Diseases CY NOV 11-15, 2005 CL San Francisco, CA SP Amer Assoc Study Liver Dis C1 Los Alamos Natl Lab, Los Alamos, NM USA. Cornell Univ, Weill Med Coll, New York, NY USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0270-9139 J9 HEPATOLOGY JI Hepatology PD OCT PY 2005 VL 42 IS 4 SU 1 BP 669A EP 670A PG 2 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 972VC UT WOS:000232480302260 ER PT J AU Ribeiro, RM Talal, AH Powers, KA Grace, M Cullen, C Hussain, M Perelson, AS AF Ribeiro, RM Talal, AH Powers, KA Grace, M Cullen, C Hussain, M Perelson, AS TI Pharmacodynamic effects of pegylated interferon-alpha2b differentiate sustained virologic responders from nonresponders in hepatitis C virus/human immunodeficiency virus coinfected patients SO HEPATOLOGY LA English DT Meeting Abstract CT 56th Annual Meeting of the American-Association-for-the-Study-of-Liver-Diseases CY NOV 11-15, 2005 CL San Francisco, CA SP Amer Assoc Study Liver Dis C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Cornell Univ, Weill Med Coll, New York, NY USA. Schering Plough Res Inst, Union, NJ USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0270-9139 J9 HEPATOLOGY JI Hepatology PD OCT PY 2005 VL 42 IS 4 SU 1 BP 674A EP 674A PG 1 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 972VC UT WOS:000232480302269 ER PT J AU Ribeiro, R Germanidis, G Powers, KA Pellegrin, B Perelson, AS Pawlotsky, JM AF Ribeiro, R Germanidis, G Powers, KA Pellegrin, B Perelson, AS Pawlotsky, JM TI Hepatitis B viral kinetics under antiviral therapy help understand the anti-HBV immune response in HBeAg-negative patients with chronic hepatitis B SO HEPATOLOGY LA English DT Meeting Abstract CT 56th Annual Meeting of the American-Association-for-the-Study-of-Liver-Diseases CY NOV 11-15, 2005 CL San Francisco, CA SP Amer Assoc Study Liver Dis C1 Los Alamos Natl Lab, Los Alamos, NM USA. Papageorgiou Gen Hosp, Thessaloniki, Greece. Univ Paris 12, Hop Henri Mondor, F-94010 Creteil, France. NR 0 TC 1 Z9 1 U1 0 U2 0 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0270-9139 J9 HEPATOLOGY JI Hepatology PD OCT PY 2005 VL 42 IS 4 SU 1 BP 721A EP 721A PG 1 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 972VC UT WOS:000232480302382 ER PT J AU Perelson, AS Herrmann, E Micol, F Zeuzem, S AF Perelson, AS Herrmann, E Micol, F Zeuzem, S TI New kinetic models for the hepatitis C virus SO HEPATOLOGY LA English DT Review ID INTERFERON-ALPHA-2B PLUS RIBAVIRIN; SERINE-PROTEASE INHIBITOR; DYNAMICS IN-VIVO; VIRAL KINETICS; ALANINE AMINOTRANSFERASE; LIVER-TRANSPLANTATION; GENOTYPE-1 PATIENTS; ANTIVIRAL EFFICACY; INITIAL TREATMENT; INFECTED PATIENTS AB Viral kinetic modeling has played an important role in the analysis of HCV RNA decay after the initiation of antiviral therapy. Models have provided a means of evaluating the antiviral effectiveness of therapy, of estimating parameters such as the rate of virion clearance and the rate of clearance of hepatitis C virus (HCV)-infected cells, and they have suggested mechanisms of action for both interferon and ribavirin. Nevertheless, the models that were originally formulated were unable to explain all of the observed HCV RNA profiles. We provide an update on the state of HCV kinetic modeling and discuss new models that have taken into consideration the different pharmacokinetics of standard and pegylated forms of interferon, allow for changes in drug effectiveness as drug concentrations fall between dosing intervals, and that have incorporated alanine aminotransferase kinetics and aspects of immune responses to provide a more comprehensive picture of the biology underlying changes in HCV RNA during therapy. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87525 USA. Univ Saarland, Fac Med, D-6650 Homburg, Germany. TH Darmstadt, Fac Math, Darmstadt, Germany. RP Perelson, AS (reprint author), Los Alamos Natl Lab, Div Theoret, MS-K710,T-10, Los Alamos, NM 87525 USA. EM asp@lanl.gov RI Herrmann, Eva/E-8215-2010 FU NCRR NIH HHS [RR06555] NR 53 TC 83 Z9 85 U1 1 U2 4 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0270-9139 J9 HEPATOLOGY JI Hepatology PD OCT PY 2005 VL 42 IS 4 BP 749 EP 754 DI 10.1002/hep.20882 PG 6 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 970XB UT WOS:000232344600001 PM 16175615 ER PT J AU Simmonds, P Bukh, J Combet, C Deleage, G Enomoto, N Feinstone, S Halfon, P Inchauspe, G Kuiken, C Maertens, G Mizokami, M Murphy, DG Okamoto, H Pawlotsky, JM Penin, FO Sablon, E Tadasu, SI Stuyver, L Thiel, HJ Viazov, S Weiner, A Widell, A AF Simmonds, P Bukh, J Combet, C Deleage, G Enomoto, N Feinstone, S Halfon, P Inchauspe, G Kuiken, C Maertens, G Mizokami, M Murphy, DG Okamoto, H Pawlotsky, JM Penin, FO Sablon, E Tadasu, SI Stuyver, L Thiel, HJ Viazov, S Weiner, A Widell, A TI Consensus proposals for a unified system of nomenclature of hepatitis C virus genotypes SO HEPATOLOGY LA English DT Article ID ENTIRE NUCLEOTIDE-SEQUENCE; COMPLETE CODING SEQUENCE; FULL-LENGTH SEQUENCE; MAJOR GENETIC GROUPS; LINE PROBE ASSAY; BLOOD-DONORS; PHYLOGENETIC ANALYSIS; PREDOMINANT GENOTYPE; ADDITIONAL SUBTYPES; VIRAL GENOTYPES AB International standardization and coordination of the nomenclature of variants of hepatitis C virus (HCV) is increasingly needed as more is discovered about the scale of HCV-related liver disease and important biological and antigenic differences that exist between variants. A group of scientists expert in the field of HCV genetic variability, and those involved in development of HCV sequence databases, the Hepatitis Virus Database (Japan), euHCVdb (France), and Los Alamos (United States), met to re-examine the status of HCV genotype nomenclature, resolve conflicting genotype or subtype names among described variants of HCV, and draw up revised criteria for the assignment of new genotypes as they are discovered in the future. A comprehensive listing of all currently classified variants of HCV incorporates a number of agreed genotype and subtype name reassignments to create consistency in nomenclature. The paper also contains consensus proposals for the classification of new variants into genotypes and subtypes, which recognizes and incorporates new knowledge of HCV genetic diversity and epidemiology. A proposal was made that HCV variants be classified into 6 genotypes (representing the 6 genetic groups defined by phylogenetic analysis). Subtype name assignment will be either confirmed or provisional, depending on the availability of complete or partial nucleotide sequence data, or remain unassigned where fewer than 3 examples of a new subtype have been described. In conclusion, these proposals provide the framework by which the HCV databases store and provide access to data on HCV, which will internationally coordinate the assignment-of-new genotypes and subtypes in the future. C1 Univ Edinburgh, Ctr Infect Dis, Edinburgh EH9 1QH, Midlothian, Scotland. NIAID, Hepatitis Viruses Sect, Infect Dis Lab, NIH, Bethesda, MD 20892 USA. BioSci Lyon Gerland, Inst Biol & Chin Prot, Pole Bioinformat Lyon, Lyon, France. Univ Yamanashi, Dept Internal Med 1, Yamanashi, Japan. US FDA, Div Viral Prod, Lab Hepatitis Viruses, Bethesda, MD 20014 USA. Lab Alphabio, Marseille, France. CNRS, BioMerieux, Immunotherapie Malad Infect Chron, Lyon, France. Los Alamos Natl Lab, Theoret Biol & Biophys Grp, Los Alamos, NM USA. Innogenet NV, Ghent, Belgium. Nagoya City Univ, Grad Sch Med Sci, Dept Clin Mol Informat Med, Nagoya, Aichi 467, Japan. Inst Natl Sante Publ Quebec, Lab Sante Publ Quebec, Quebec City, PQ, Canada. Jichi Med Sch, Dept Infect & Immun, Div Virol, Minami Kawachi, Tochigi, Japan. Univ Paris, Hop Henri Mondor, INSERM, Dept Virol,U635, Creteil, France. Virco BVBA, Mechelen, Belgium. Univ Giessen, Inst Virol, D-6300 Giessen, Germany. Essen Univ Hosp, Inst Virol, Essen, Germany. Chiron Corp, Emeryville, CA 94608 USA. Lund Univ, Malmo Univ Hosp, Dept Med Microbiol, Malmo, Sweden. RP Simmonds, P (reprint author), Univ Edinburgh, Ctr Infect Dis, Edinburgh EH9 1QH, Midlothian, Scotland. EM Peter.Simmonds@ed.ac.uk RI PENIN, Francois/A-7315-2008; DELEAGE, Gilbert/F-7163-2010; Okamoto, Hiroaki/H-4371-2011 OI Okamoto, Hiroaki/0000-0003-0827-0964 NR 96 TC 939 Z9 1016 U1 9 U2 48 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0270-9139 J9 HEPATOLOGY JI Hepatology PD OCT PY 2005 VL 42 IS 4 BP 962 EP 973 DI 10.1002/hep.20819 PG 12 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 970XB UT WOS:000232344600025 PM 16149085 ER PT J AU Wang, KY Chiasson, J Bodson, M Tolbert, LM AF Wang, KY Chiasson, J Bodson, M Tolbert, LM TI A nonlinear least-squares approach for identification of the induction motor parameters SO IEEE TRANSACTIONS ON AUTOMATIC CONTROL LA English DT Article DE induction motor; least-squares identification; parameter identification; resultants AB A nonlinear least-squares method is presented for the identification of the induction motor parameters. A major difficulty with the induction motor is that the rotor state variables are not available measurements so that the system identification model cannot be made linear in the parameters without overparametrizing the model. Previous work in the literature has avoided this issue by making simplifying assumptions such as a "slowly varying speed:" Here, no such simplifying assumptions are made. The problem is formulated as a nonlinear least-squares identification problem and uses elimination theory (resultants) to compute the parameter vector that minimizes the residual error. The only requirement is that the system must be sufficiently excited. The method is suitable for online operation to continuously update the parameter values. Experimental results are presented. C1 Univ Tennessee, Dept Elect & Comp Engn, Knoxville, TN 37996 USA. Univ Utah, Dept Elect & Comp Engn, Salt Lake City, UT 84112 USA. Oak Ridge Natl Lab, Knoxville, TN 37932 USA. RP Wang, KY (reprint author), Univ Tennessee, Dept Elect & Comp Engn, Knoxville, TN 37996 USA. EM wkaiyu@utk.edu; chiasson@utk.edu; bodson@ece.utah.edu; tolbert@utk.edu OI Tolbert, Leon/0000-0002-7285-609X NR 19 TC 42 Z9 48 U1 0 U2 7 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0018-9286 J9 IEEE T AUTOMAT CONTR JI IEEE Trans. Autom. Control PD OCT PY 2005 VL 50 IS 10 BP 1622 EP 1628 DI 10.1109/TAC.2005.856661 PG 7 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA 975CU UT WOS:000232639400016 ER PT J AU Muthuswamy, J Okandan, M Jain, T Gilletti, A AF Muthuswamy, J Okandan, M Jain, T Gilletti, A TI Electrostatic microactuators for precise positioning of neural microelectrodes SO IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING LA English DT Article DE brain implants; MEMS; microdrive; multi-unit activity; prostheses ID MOTORIZED MICRODRIVE; ELECTRODES; ARRAYS; RECORDINGS; POTENTIALS; NEURONS; SYSTEM; PROBE AB Microelectrode arrays used for monitoring single and multineuronal action potentials often fail to record from the same population of neurons over a period of time likely due to micro-motion of neurons away from the microelectrode, gliosis around the recording site and also brain movement due to behavior. We report here novel electrostatic microactuated microelectrodes that will enable precise repositioning of the microelectrodes within the brain tissue. Electrostatic comb-drive microactuators and associated microelectrodes are fabricated using the SUMMiT V(TM) (Sandia's Ultraplanar Multilevel MEMS Technology) process, a five-layer polysilicon micromachining technology of the Sandia National labs, NM. The microfabricated microactuators; enable precise bidirectional positioning of the microelectrodes in the brain with accuracy in the order of 1 mu m. The microactuators allow for a linear translation of the microelectrodes of up to 5 mm in either direction making it suitable for positioning microelectrodes in deep structures of a rodent brain. The overall translation was reduced to approximately 2 mm after insulation of the microelectrodes with epoxy for monitoring multiunit activity. The microactuators; are capable of driving the microelectrodes in the brain tissue with forces in the order of several micro-Newtons. Single unit recordings were obtained from the somatosensory cortex of adult rats in acute experiments demonstrating the feasibility of this technology. Further optimization of the insulation, packaging and interconnect issues will be necessary before this technology can be validated in long-term experiments. C1 Arizona State Univ, Dept Bioengn, Tempe, AZ 85287 USA. Sandia Natl Labs, MEMS Sci & Technol, Albuquerque, NM 87185 USA. Arizona State Univ, Harrigton Dept Bioengn, Tempe, AZ 85287 USA. RP Muthuswamy, J (reprint author), Arizona State Univ, Dept Bioengn, ECG 334,POB 879709, Tempe, AZ 85287 USA. EM jit@asu.edu FU NINDS NIH HHS [R21 NS041681, R21 NS41681] NR 28 TC 33 Z9 33 U1 2 U2 6 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9294 J9 IEEE T BIO-MED ENG JI IEEE Trans. Biomed. Eng. PD OCT PY 2005 VL 52 IS 10 BP 1748 EP 1755 DI 10.1109/TBME.2005.855712 PG 8 WC Engineering, Biomedical SC Engineering GA 967UL UT WOS:000232116600013 PM 16235660 ER PT J AU Hild, KE Pinto, D Erdogmus, D Principe, JC AF Hild, KE Pinto, D Erdogmus, D Principe, JC TI Convolutive blind source separation by minimizing mutual information between segments of signals SO IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS LA English DT Review DE convolutive blind source separation (BSS); information theoretic learning; nonparametric entropy estimator; Renyi's entropy ID SELF-ADAPTIVE SEPARATION; NONSTATIONARY SOURCES; 2ND-ORDER STATISTICS; RECURSIVE STRUCTURE; MIXED SIGNALS; MIXTURES; DECONVOLUTION; ALGORITHMS; STABILITY; NOISE AB A method to perform convolutive blind source separation of super-Gaussian sources by minimizing the mutual information between segments of output signals is presented. The proposed approach is essentially an implementation of an idea previously proposed by Pham. The formulation of mutual information in the proposed criterion makes use of a nonparametric estimator of Renyi's alpha-entropy, which becomes Shannon's entropy in the limit as alpha approaches 1. Since alpha can be any number greater than 0, this produces a family of criteria having an infinite number of members. Interestingly, it appears that Shannon's entropy cannot be used for convolutive source separation with this type of estimator. In fact, only one value of alpha appears to be appropriate, namely alpha = 2, which corresponds to Renyi's quadratic entropy. Four experiments are included to show the efficacy of the proposed criterion. C1 Univ Calif San Francisco, Dept Radiol, San Francisco, CA 94122 USA. Sandia Natl Labs, Exploratory RealTime Syst Dept, Albuquerque, NM 87123 USA. Oregon Hlth & Sci Univ, Dept Comp Sci & Engn, Beaverton, OR 97006 USA. Oregon Hlth & Sci Univ, Dept Biomed Engn, Beaverton, OR 97006 USA. Univ Florida, Dept Elect Engn & Comp Sci, Gainesville, FL 32611 USA. RP Univ Calif San Francisco, Dept Radiol, San Francisco, CA 94122 USA. EM k.hild@ieee.org; dipinto@sandia.gov; derdogmus@ieee.org; principe@cnel.ufl.edu RI Erdogmus, Deniz/A-8170-2009 NR 114 TC 4 Z9 5 U1 1 U2 6 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1549-8328 EI 1558-0806 J9 IEEE T CIRCUITS-I JI IEEE Trans. Circuits Syst. I-Regul. Pap. PD OCT PY 2005 VL 52 IS 10 BP 2188 EP 2196 DI 10.1109/TCSI.2005.852915 PG 9 WC Engineering, Electrical & Electronic SC Engineering GA 976AV UT WOS:000232706100020 ER PT J AU Hansson, A Aulin, T AF Hansson, A Aulin, T TI Generalized APP detection of continuous phase modulation over unknown ISI channels SO IEEE TRANSACTIONS ON COMMUNICATIONS LA English DT Article DE channel estimation; continuous phase modulation (CPM); intersymbol interference (ISI); iterative decoding; maximum a posteriori (MAP) detection ID MLSE AB Techniques for computing soft information in the presence of unknown intersymbol interference are presented, with a particular focus on iterative detection of serially concatenated continuous phase modulation. The techniques are centered around the recursive least-squares algorithm, thus enabling unsupervised detection. In particular, we employ bidirectional estimation. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Chalmers Univ Technol, Dept Comp Engn, SE-41296 Gothenburg, Sweden. RP Hansson, A (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM hansson@lanl.gov; tor@ce.chalmers.se NR 15 TC 6 Z9 8 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0090-6778 J9 IEEE T COMMUN JI IEEE Trans. Commun. PD OCT PY 2005 VL 53 IS 10 BP 1615 EP 1619 DI 10.1109/TCOMM.2005.857164 PG 5 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA 977FP UT WOS:000232788700004 ER PT J AU Welch, BJ Kanaujia, SO Seetharam, A Thirumalai, D Dean, AG AF Welch, BJ Kanaujia, SO Seetharam, A Thirumalai, D Dean, AG TI Supporting demanding hard-real-time systems with STI SO IEEE TRANSACTIONS ON COMPUTERS LA English DT Article DE software thread integration; embedded systems; fine-grain concurrency; post-pass compiler; hardware-to-software migration ID ALGORITHM AB Software thread integration (STI) is a compilation technique which enables the efficient use of an application's fine-grain idle time on generic processors without special hardware support. With STI, a primary function is automatically interleaved with a secondary function to create a single implicitly multithreaded function which minimizes context switching and, hence, both improves performance and also offers very fine-grain concurrency. In this work, we extend STI techniques to address two challenges. First, we reduce response time for interrupts or other high-priority threads by introducing polling servers into integrated threads. Second, we enable integration with long host threads, expanding the domain of STI. We derive methods to evaluate the response time for threads in systems with and without these new integration methods. We demonstrate these concepts with the integration of various threads in a sample hard-real-time system on a highly-constrained microcontroller. We use an inexpensive 20 MHz AVR 8-bit microcontroller to generate monochrome NTSC video while servicing a high-speed (115.2 kbaud) serial communication link. We have built and tested this system, acheiving graphics rendering speed-ups of 3.99x to 13.5x. C1 Sandia Natl Labs, Wireless & Event Sensing Applicat Dept, Sandia Natl Labs 02621, Albuquerque, NM 87185 USA. N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27526 USA. RP Sandia Natl Labs, Wireless & Event Sensing Applicat Dept, Sandia Natl Labs 02621, POB 5800,MS 0986, Albuquerque, NM 87185 USA. EM bjwelch@sandia.gov; sokanauj@ieee.org; adarsh4u@yahoo.com; Alex_Dean@ncsu.edu NR 55 TC 1 Z9 1 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA SN 0018-9340 EI 1557-9956 J9 IEEE T COMPUT JI IEEE Trans. Comput. PD OCT PY 2005 VL 54 IS 10 BP 1188 EP 1202 DI 10.1109/TC.2005.169 PG 15 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA 956BQ UT WOS:000231274300002 ER PT J AU Butler, WH Zhang, XG Vutukuri, S Chshiev, M Schulthess, TC AF Butler, WH Zhang, XG Vutukuri, S Chshiev, M Schulthess, TC TI Theory of tunneling magnetoresistance for epitaxial systems SO IEEE TRANSACTIONS ON MAGNETICS LA English DT Article; Proceedings Paper CT International Magnetics Conference 2005 CY APR 04-08, 2005 CL Nagoya, JAPAN SP IEEE Magnet Soc, Magnet Soc Japan DE Co; cobalt; Fe; iron; magnesium oxide; magnetoresistance; MgO; symmetry; tunneling ID MOLECULAR-DYNAMICS; ROOM-TEMPERATURE; JUNCTIONS; CONDUCTION; METALS AB The tunneling current for electrons tunneling between crystalline ferromagnetic electrodes through an epitaxial crystalline barrier can be calculated from first principles. These calculations show that the wave function symmetry can be exploited to achieve very high tunneling magnetoresistance. For the Fe(100)vertical bar MgO(100) vertical bar Fe(100) system, the calculated conductance is much higher and its decrease with MgO thickness is much slower than has been estimated using a simple free electron-barrier model. C1 Univ Alabama, Ctr Mat Informat Technol MINT, Tuscaloosa, AL 35487 USA. Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. RP Butler, WH (reprint author), Univ Alabama, Ctr Mat Informat Technol MINT, Tuscaloosa, AL 35487 USA. RI Chshiev, Mairbek/A-9742-2008 OI Chshiev, Mairbek/0000-0001-9232-7622 NR 19 TC 16 Z9 17 U1 1 U2 8 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9464 J9 IEEE T MAGN JI IEEE Trans. Magn. PD OCT PY 2005 VL 41 IS 10 BP 2645 EP 2648 DI 10.1109/TMAG.2005.854763 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA 975RN UT WOS:000232679700029 ER PT J AU Song, SH Snyder, JE Wu, D Lograsso, TA Dennis, KW McCallum, RW Janssen, Y Jiles, DC AF Song, SH Snyder, JE Wu, D Lograsso, TA Dennis, KW McCallum, RW Janssen, Y Jiles, DC TI Thermal expansion and magneto striction in Pr5Ni2Si3 compounds SO IEEE TRANSACTIONS ON MAGNETICS LA English DT Article; Proceedings Paper CT International Magnetics Conference 2005 CY APR 04-08, 2005 CL Nagoya, JAPAN SP IEEE Magnet Soc, Magnet Soc Japan DE magnetostriction; rare earth; spin reorientation; single crystal; thermal expansion AB The thermal expansion and magnetostriction of polycrystalline and single-crystal Pr5Ni2Si3 were investigated over the temperature range 5-300 K. The results show two magnetic phase transitions, one corresponding to the Curie temperature and the other at a lower temperature exhibiting characteristics of a spin reorientation transition. In the temperature range below the Curie temperature, the thermal expansion in single-crystal samples exhibited a temperature dependent anisotropy. Specifically negative and positive magnetic contributions to the thermal expansion were observed along the directions parallel and perpendicular to the c axis respectively. C1 Iowa State Univ, Mat & Engn Phys Program, Ames Lab, US Dep Energy, Ames, IA 50011 USA. Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. RP Song, SH (reprint author), Iowa State Univ, Mat & Engn Phys Program, Ames Lab, US Dep Energy, Ames, IA 50011 USA. RI Jiles, David/H-9548-2012 NR 3 TC 4 Z9 4 U1 0 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9464 J9 IEEE T MAGN JI IEEE Trans. Magn. PD OCT PY 2005 VL 41 IS 10 BP 3499 EP 3501 DI 10.1109/TMAG.2005.0854765 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA 975RN UT WOS:000232679700306 ER PT J AU Zhukov, AA Kiziroglou, ME Goncharov, AV Boardman, R Ghanem, MA Abdelsalam, M Novosad, V Karapetrov, G Li, X Fangohr, H de Groot, CH Bartlett, PN de Groot, PAJ AF Zhukov, AA Kiziroglou, ME Goncharov, AV Boardman, R Ghanem, MA Abdelsalam, M Novosad, V Karapetrov, G Li, X Fangohr, H de Groot, CH Bartlett, PN de Groot, PAJ TI Shape-induced anisotropy in antidot arrays from self-assembled templates SO IEEE TRANSACTIONS ON MAGNETICS LA English DT Article; Proceedings Paper CT International Magnetics Conference 2005 CY APR 04-08, 2005 CL Nagoya, JAPAN SP IEEE Magnet Soc, Magnet Soc Japan DE electrodeposition; magnetic hysteresis; nanotechnology; self-assembly; silicon AB Using self-assembly of polystyrene spheres, well-ordered templates have been prepared on glass and silicon substrates. Strong guiding of self-assembly is obtained on photolithographically structured silicon substrates. Magnetic antidot arrays with three-dimensional architecture have been prepared by electrodeposition in the pores of these templates. The shape anisotropy demonstrates a crucial impact on magnetization reversal processes. C1 Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England. Univ Southampton, Sch Elect & Comp Engn, Southampton SO17 1BJ, Hants, England. Univ Southampton, Sch Engn Sci, Southampton SO17 1BJ, Hants, England. Univ Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Zhukov, AA (reprint author), Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England. RI Bartlett, Philip/C-4606-2008; de groot, cornelis/B-4732-2009; Fangohr, Hans/C-6367-2008; Ghanem, Mohamed /C-3757-2009; Novosad, Valentyn/C-2018-2014; Zhukov, Alexander/E-1331-2014; Novosad, V /J-4843-2015; Karapetrov, Goran/C-2840-2008 OI Bartlett, Philip/0000-0002-7300-6900; de groot, cornelis/0000-0002-3850-7101; Fangohr, Hans/0000-0001-5494-7193; Ghanem, Mohamed /0000-0003-2866-9016; Karapetrov, Goran/0000-0003-1113-0137 NR 11 TC 4 Z9 4 U1 0 U2 6 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9464 J9 IEEE T MAGN JI IEEE Trans. Magn. PD OCT PY 2005 VL 41 IS 10 BP 3598 EP 3600 DI 10.1109/TMAG.2005.854734 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA 975RN UT WOS:000232679700336 ER PT J AU Lo, CCH Ring, AP Snyder, JE Jiles, DC AF Lo, CCH Ring, AP Snyder, JE Jiles, DC TI Improvement of magnetomechancial properties of cobalt ferrite by magnetic annealing SO IEEE TRANSACTIONS ON MAGNETICS LA English DT Article; Proceedings Paper CT International Magnetics Conference 2005 CY APR 04-08, 2005 CL Nagoya, JAPAN SP IEEE Magnet Soc, Magnet Soc Japan DE induced anisotropy; magnetic annealing; magnetostrictive cobalt ferrite; magnetoelastic stress sensor ID SENSOR APPLICATIONS; COMPOSITES AB We report dramatic improvements in both magnetostriction level and strain derivative of polycrystalline cobalt ferrite as a result of magnetic annealing. Magnetostrictive cobalt ferrite composites have potential for use in advanced magnetornechanical stress and torque sensors due to their high sensitivity of magnetization to applied stresses and high levels of magnetostriction. Results show that annealing cobalt ferrite at 300 degrees C in air for 36 h under a dc field of 318 kA/m (4 kOe) induced a uniaxial anisotropy with the easy axis being along the annealing field direction. Under hard axis applied fields, the maximum magnetostriction measured along the hard axis at room temperature increased in magnitude from -200 x 10(-6) to -252 x 10(-6) after annealing. The maximum strain derivative (d lambda/dH)(max), which is related to stress sensitivity, increased from 1.5 x 10(-9) A(-1)m to 3.9 x 10(-9) A(-1)m. The results can be interpreted in terms of the effects of induced uniaxial anisotropy on the domain structure and magnetization processes. C1 Iowa State Univ, Ames Lab, Ctr Nondestruct Evaluat, Ames, IA 50011 USA. US DOE, Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA. Iowa State Univ, Mat Sci & Engn Dept, Ames, IA 50011 USA. Iowa State Univ, Ctr Microelect Res, Ames, IA 50011 USA. RP Lo, CCH (reprint author), Iowa State Univ, Ames Lab, Ctr Nondestruct Evaluat, Ames, IA 50011 USA. RI Ring, Andrew/E-1893-2012; Jiles, David/H-9548-2012 OI Ring, Andrew/0000-0003-1013-737X; NR 5 TC 27 Z9 27 U1 1 U2 13 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9464 J9 IEEE T MAGN JI IEEE Trans. Magn. PD OCT PY 2005 VL 41 IS 10 BP 3676 EP 3678 DI 10.1109/TMAG.2005.854790 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA 975RN UT WOS:000232679700362 ER PT J AU Chen, Z Brown, DN Ma, BM Campbell, P Wu, YQ Kramer, MJ AF Chen, Z Brown, DN Ma, BM Campbell, P Wu, YQ Kramer, MJ TI A comparative study on the microstructure and magnetic properties of melt-spun RE2Fe14B/alpha-Fe and RE2Fe14B/Fe3B (RE = Nd, Pr) nanocomposites SO IEEE TRANSACTIONS ON MAGNETICS LA English DT Article; Proceedings Paper CT International Magnetics Conference 2005 CY APR 04-08, 2005 CL Nagoya, JAPAN SP IEEE Magnet Soc, Magnet Soc Japan DE magnetic property; melt spinning; microstructure; nanocomposite magnet; RE-Fe-B ID ALLOYS AB The microstructure and magnetic properties of melt-spun RE2Fe14B/alpha-Fe and RE2Fe14B/Fe3B nanocomposite powders; were studied using Pr and Nd versions of RE9Fe86B5(RE2Fe14B/alpha-Fe) and RE9Fe79B12(RE2Fe14B/Fe3B) alloys. It was found that the RE9Fe86B5 exhibited a finer and more uniform microstructure with an average grain size of similar to 10 nm, whereas a relatively coarse microstructure (grain size up to 100 nm) was observed in the RE9Fe79B12. It was also found that the RE9Fe86B5 yielded higher B-r and (BH)(max), and a more square demagnetization loop, although the H-ci was slightly lower. The superior magnetic properties observed in the RE9Fe86B5 can be attributed to the more favorable intrinsic magnetic properties of alpha-Fe (higher M-s and lower K) and the much finer microstructure, which produces a stronger intergrain exchange coupling between the RE2Fe14B and alpha-Fe phases. The results indicate that RE2Fe14B/alpha-Fe nanocomposites are more desirable than RE2Fe14B/Fe3B for future development of RE-Fe-B nanocomposite magnets. C1 Magnequench Technol Ctr, Singapore 117525, Singapore. Magnet Hong Kong, Kowloon, Hong Kong, Peoples R China. Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. RP Chen, Z (reprint author), Magnequench Technol Ctr, Singapore 117525, Singapore. NR 6 TC 0 Z9 0 U1 1 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9464 J9 IEEE T MAGN JI IEEE Trans. Magn. PD OCT PY 2005 VL 41 IS 10 BP 3862 EP 3864 DI 10.1109/TMAG.2005.854950 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA 975RN UT WOS:000232679700423 ER PT J AU Shokouhi, S Vaska, P Schlyer, DJ Stoll, SP Villanueva, A Kriplani, A Woody, CL AF Shokouhi, S Vaska, P Schlyer, DJ Stoll, SP Villanueva, A Kriplani, A Woody, CL TI System performance Simulations of the RatCAP awake rat brain scanner SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE SimSET; small animal imaging ID PET AB The capability to create high quality images from data acquired by the Rat Conscious Animal PET tomograph (RatCAP) has been evaluated using modified versions of the PET Monte Carlo code Simulation System for Emission Tomography (SimSET). The proposed tomograph consists of lutetium oxyorthosilicate (LSO) crystals arranged in 12 4 x 8 blocks. The effects of the RatCAPs small ring diameter (similar to 40 mm) and its block detector geometry on image quality for small animal studies have been investigated. Since the field of view will be almost as large as the ring diameter, radial elongation artifacts due to parallax error are expected to degrade the spatial resolution and thus the image quality at the edge of the field of view. In addition to Monte Carlo simulations, some preliminary results of experimentally acquired images in both two-dimensional (2-D) and 3-D modes are presented. C1 SUNY Stony Brook, Stony Brook, NY 11790 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. RP Shokouhi, S (reprint author), SUNY Stony Brook, Stony Brook, NY 11790 USA. EM sepideh@bnl.gov; vaska@bnl.gov; stoll@lbnl.gov; azvilla@bnl.gov; aarti@bnl.gov; woody@bnl.gov NR 9 TC 6 Z9 6 U1 2 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1305 EP 1310 DI 10.1109/TNS.2005.858236 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZB UT WOS:000233780800013 ER PT J AU Wu, HM Kreissl, MC Schelbert, HR Ladno, W Prins, M Shoghi-Jadid, K Chatziioannou, A Phelps, ME Huang, SC AF Wu, HM Kreissl, MC Schelbert, HR Ladno, W Prins, M Shoghi-Jadid, K Chatziioannou, A Phelps, ME Huang, SC TI First-pass angiography in mice using FDG-PET: A simple method of deriving the cardiovascular transit time without the need of region-of-interest drawing SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE cardiovascular transit time; first-pass angiography; mice; positron emission tomography AB In this study, we developed a simple and robust semi-automatic method to measure the right ventricle to left ventricle (RV-to-LV) transit time (TT) in mice using 2-[F-18]fluoro-2-deoxy-D-glucose (FDG) positron emission tomography (PET). The accuracy of the method was first evaluated using a 4-D digital dynamic mouse phantom. The RV-to-LV TTs of twenty-nine mouse studies were measured using the new method and compared to those obtained from the conventional ROI-drawing method. The results showed that the new method correctly separated different structures (e.g., RV, lung, and LV) in the PET images and generated corresponding time activity curve (TAC) of each structure. The RV-to-LV TTs obtained from the new method and ROI method were not statistically different (p = 0.20; r = 0.76). We expect that this fast and robust method is applicable to the pathophysiology of cardiovascular diseases using small animal models such as rats and mice. C1 Univ Calif Los Angeles, Dept Mol & Med Pharmacol, David Geffen Sch Med, Los Angeles, CA 90095 USA. Univ Calif Los Angeles, DOE, Inst Mol Med, Los Angeles, CA 90095 USA. Univ Calif Los Angeles, Dept Neurosurg, David Geffen Sch Med, Los Angeles, CA 90095 USA. Univ Calif Los Angeles, Dept Biomath, David Geffen Sch Med, Los Angeles, CA 90095 USA. RP Wu, HM (reprint author), Univ Calif Los Angeles, Dept Mol & Med Pharmacol, David Geffen Sch Med, Los Angeles, CA 90095 USA. EM cwu@mednet.ucla.edu RI Shoghi, Kooresh/H-7398-2014 OI Shoghi, Kooresh/0000-0003-3204-457X FU NCI NIH HHS [U24 CA092865]; NIBIB NIH HHS [R01 EB001943] NR 7 TC 5 Z9 5 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1311 EP 1315 DI 10.1109/TNS.2005.858239 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZB UT WOS:000233780800014 PM 26478599 ER PT J AU Velazco, R Schwank, JR AF Velazco, R Schwank, JR TI The Eighth European Workshop on Radiation and its effects on Components and Systems (RADECS 2004) - Guest Editor's comments SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Editorial Material C1 TIMA Labs, F-38031 Grenoble, France. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Velazco, R (reprint author), TIMA Labs, 46 Av Felix Viallet, F-38031 Grenoble, France. EM raoul.velazco@imag.fr; schwanj@sandia.gov NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1455 EP 1455 DI 10.1109/TNS.2005.856541 PN 2 PG 1 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZH UT WOS:000233781400001 ER PT J AU Cizmarik, RR Schrimpf, RD Fleetwood, DM Galloway, KF Platteter, DG Shaneyfelt, MR Pease, RL Boch, J Ball, DR Rowe, JD Maher, MC AF Cizmarik, RR Schrimpf, RD Fleetwood, DM Galloway, KF Platteter, DG Shaneyfelt, MR Pease, RL Boch, J Ball, DR Rowe, JD Maher, MC TI The impact of mechanical stress on the total-dose response of linear bipolar transistors with various passivation layers SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 8th European Workshop on Radiation and Its Effects on Components and Systems CY SEP 19-23, 2004 CL Madrid, SPAIN ID RATE SENSITIVITY; DEVICES; ICS AB In this work, we investigate how externally applied mechanical stress impacts the total dose hardness and enhanced low-dose-rate sensitivity of linear bipolar ICs fabricated with different passivation layers. To determine the effects of externally applied stress and/or radiation exposure on the current gain, various compressive or tensile stresses were applied to lateral PNP bipolar transistors at the wafer level, using a cantilever method. The devices were then exposed to 10-keV X-rays or Cs-137 gamma-rays. The effect of externally applied stress on pre and post irradiation gain degradation is found to be relatively minor compared to the effects of changes in passivation layers on the radiation response of devices. C1 Vanderbilt Univ, Nashville, TN 37235 USA. NAVSEA, Crane, IN 47522 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RLP Res, Los Lunas, NM 87031 USA. Univ Nice, F-06108 Nice, France. Natl Semicond Corp, Portland, ME 04106 USA. RP Cizmarik, RR (reprint author), Vanderbilt Univ, 221 Kirkland Hall, Nashville, TN 37235 USA. EM rcizmank@hotmail.com RI Schrimpf, Ronald/L-5549-2013 OI Schrimpf, Ronald/0000-0001-7419-2701 NR 10 TC 0 Z9 0 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1513 EP 1517 DI 10.1109/TNS.2005.855815 PN 2 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZH UT WOS:000233781400011 ER PT J AU Warner, A Kazakevich, G Nagaitsev, S Tassotto, G Gai, W Konecny, R AF Warner, A Kazakevich, G Nagaitsev, S Tassotto, G Gai, W Konecny, R TI Beam profile diagnostics for the fermilab medium energy electron cooler SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE electron beam; electron cooler; multiwire monitor; optial transition; radiation AB The Fermilab Recycler ring will employ an electron cooler to store and cool 8.9 GeV antiprotons. The cooler will be based on a Pelletron electrostatic accelerator working in an energy-recovery regime. Several techniques for determining the characteristics of the beam dynamics are being investigated. Beam profiles have been measured as a function of the beam line optics at the energy of 3.5 MeV in the current range of 10(-4) - 1 A, with a pulse duration of 2 mu s. The profiles were measured using optical transition radiation produced at the interface of a 250-mu m aluminum foil and also from YAG crystal luminescence. In addition, beam profiles measured using multiwire detectors were investigated. These three diagnostics will be used together to determine the profile dynamics of the beam. In this paper we report the results so far obtained using these techniques. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Warner, A (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. EM wamer@fnal.gov; kazakevi@fnal.gov; nsergei@fnal.gov; tassotto@fnal.gov; wg@hep.anl.gov; rsk@hep.anl.gov NR 5 TC 0 Z9 0 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1585 EP 1589 DI 10.1109/TNS.2005.856768 PN 3 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700001 ER PT J AU Stephens, DL Runkle, RC Carlson, DK Peurrung, AJ Seifert, A Wyatt, C AF Stephens, DL Runkle, RC Carlson, DK Peurrung, AJ Seifert, A Wyatt, C TI Induced temporal signatures for point-source detection SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE coded aperture; point source detection; radiation detection AB Detection of radioactive point sources is inherently divided into two regimes encompassing stationary and moving detectors. The two cases differ in their treatment of background radiation and its influence on detection sensitivity. Stationary detectors are limited by the statistical fluctuation of the background, while moving detectors may be subjected to widely and irregularly varying background radiation as a result of geographical and environmental variation. This significant systematic variation, in conjunction with the statistical variation of the background, requires a very conservative threshold in order to yield the same false-positive rate as the stationary detection case. This manuscript discusses a novel detector geometry that induces a unique time-encoded signature (TES) when exposed to point sources. The identification of temporal signatures for point sources using TES has been demonstrated and compared with the canonical method. This work demonstrates that temporal signatures mitigate systematic background variation and thus increase point-source detection in a moving detector system. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Stephens, DL (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM daniel.stephens@pnl.gov; robert.runkle@pnl.gov; dcarlson@pnl.gov; aj.peurrung@pnl.gov; allen.seifert@pnl.gov NR 6 TC 7 Z9 7 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1712 EP 1715 DI 10.1109/TNS.2005.856905 PN 3 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700023 ER PT J AU Smith, LE Swickard, AR Heredia-Langner, A Warren, GA Siciliano, ER Miller, SD AF Smith, LE Swickard, AR Heredia-Langner, A Warren, GA Siciliano, ER Miller, SD TI Design considerations for passive gamma-ray spectrometers SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE gamma-ray spectroscopy detectors; nuclear measurements; radiation monitoring ID OPTIMIZATION AB Passive gamma-ray spectrometers composed of attenuation filters and integrating detection materials provide important advantages for measurements in high-radiation environments and for long-term monitoring. Each of these applications has requirements that constrain. the design of the instrument, such as incident energy range of interest, sensor size and weight, readout method, and cost. The multitude of parameters in passive spectrometer design (e.g., attenuation filter material and thickness, integrating sensor type, number of pixels, reconstructed energy bin structure) results in a large design space to examine. The development of generalized design optimization tools to interrogate this space and to identify promising spectrometer designs is discussed, particularly the methods used to rapidly calculate system transfer functions and the use of genetic algorithms for design optimization. Preliminary measurements to validate the design tools are described, and example results from early design optimization efforts are provided. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Smith, LE (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM eric.smith@pnl.gov; andrea.swickard@pnl.gov; alejandro.heredia-langner@pnl.gov; glen.warren@pnl.gov; edward.siciliano@pnl.gov; steven.miller@pnl.gov NR 12 TC 1 Z9 1 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1721 EP 1727 DI 10.1109/TNS.2005.856809 PN 3 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700025 ER PT J AU Aryaeinejad, R Hartwell, JK Scates, WW AF Aryaeinejad, R Hartwell, JK Scates, WW TI High-resolution Compton-suppressed CZT and LaCl3 detectors for fission products identification SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE Compton suppression; gamma ray detection; room-temperature detector ID SPECTROMETER; PERFORMANCE AB Room-temperature semiconductor CdZnTe (CZT) detectors are currently limited to total detector volumes of 1-2 cm 3, which is dictated by poor charge transport characteristics. Because of this size limitation, one of the problems in accurately determining isotope identification is the enormous background from Compton scattering events. Eliminating this background will not only increase the sensitivity and accuracy of measurements, but will also help to resolve peaks buried under the background and peaks in close vicinity to others. We are currently developing a fission products detection system based on Compton-suppressed CZT and LaCl3 (Ce) detectors. In this application, the detection system is required to operate in a high radiation field. Therefore, a small 10 mm x 10 mm x 5 mm CZT and circle divide 13 mm x 15 min LaCl3 detector are placed inside the center of a well-shielded circle divide 76 min by 76 mm long NaI detector. So far, we have been able to successfully reduce Compton background by a factor of 3.7 to 4.0 for a Cs-137 spectrum. In this work, we will discuss the performance of this detection system using both CZT and LaCl3 detectors. The results are compared with MCNP calculations. C1 Idaho Natl Engn Lab, Idaho Falls, ID 83415 USA. RP Aryaeinejad, R (reprint author), Idaho Natl Engn Lab, Idaho Falls, ID 83415 USA. EM rahmat.aryaeinejad@inl.gov; john.hartwell@inl.gov; wade.scates@inl.gov NR 10 TC 3 Z9 3 U1 3 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1728 EP 1732 DI 10.1109/TNS.2005.856730 PN 3 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700026 ER PT J AU Glodo, J Moses, WW Higgins, WM van Loef, EVD Wong, P Derenzo, SE Weber, MJ Shah, KS AF Glodo, J Moses, WW Higgins, WM van Loef, EVD Wong, P Derenzo, SE Weber, MJ Shah, KS TI Effects of Ce concentration on scintillation properties of LaBr3 : Ce SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE LaBr3; scintillation detectors; scintillators ID ENERGY-RESOLUTION; TIMING PROPERTIES; LSO AB In this communication, we investigate the scintillation properties of LaBr3: Ce as a function of Ce concentration. We have studied crystals nominally doped with 0.5%, 5%, 10%, 20%, and 30%Ce (by mole). Previous reports suggest that as the Ce content increases, there is a decrease in light output and little or no change in decay time constants. These results show that the light output does not change with Ce concentration up to 30% and depends mostly on the crystal quality. On the other hand we have found the timing properties to be a strong function of Ce concentration. As the Ce content increases, the principal decay time constant of scintillation decreases from similar to 26 ns for 0.5%Ce to similar to 17 ns; for crystals with > 5% Ce. Moreover, there is a significant change in rise time constants. The rise time measured for a sample doped with 0.5%Ce is up to 9 ns, whereas for samples doped with > 10%Ce it is less than 0.5 Its. The change of rise time has a major effect on the timing properties of this scintillator, with timing resolution improving from 361 ps to less than 100 ps (full width at half maximum). C1 Radiat Monitoring Devices, Watertown, MA 02472 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Glodo, J (reprint author), Radiat Monitoring Devices, Watertown, MA 02472 USA. EM kshah@rmdinc.com NR 14 TC 82 Z9 86 U1 1 U2 8 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1805 EP 1808 DI 10.1109/TNS.2005.856906 PN 3 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700039 ER PT J AU Melcher, CL Friedrich, S Cramer, P Spurrier, MA Szupryczynski, P Nutt, R AF Melcher, CL Friedrich, S Cramer, P Spurrier, MA Szupryczynski, P Nutt, R TI Cerium oxidation state in LSO : Ce scintillators SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE cerium; oxidation state; scintillation detectors; scintillation mechanism; X-ray absorption spectoscropy AB Trivalent cerium ions form the luminescence centers in several important families of scintillation materials including the rare earth oxyorthosilicates, pyrosilicates, and aluminates. When comparing the experimentally determined scintillation properties of cerium-doped scintillators to theoretical models of scintillation mechanisms, there is often speculation regarding the fraction of the total cerium that exists in the radiative trivalent charge state (Ce3+) rather than the nonradiative tetravalent state (Ce4+). Until now, however, no technique has been developed to quantitatively measure both Ce3+ and Ce3+ in single crystal scintillators. We report here for the first time direct measurements of Ce'+ and Ce3+ in Lu2SiO5:Ce single crystals. Synchrotron radiation was used to measure the X-ray absorption on the M-4 and M-5 edges of Ce, and the results were compared to model samples of Ce3+ (Ce2O3) and Ce4+ (CeO2) which provided clear signatures of the two charge states. The spectra were obtained with a high-resolution superconducting tunnel junction spectrometer on beamline 4.0.2 at the Advanced Light Source synchrotron at Lawrence Berkeley National Laboratory. The results clearly show 100% Ce, independent of light yield and sample coloration. Therefore, energy migration to the luminescence centers appears to be the determining factor in the scintillation efficiency of these samples, rather than variations in the Ce3+/Ce3+ ratio. C1 CTI Mol Imaging Inc, Knoxville, TN 37932 USA. Lawrence Livermore Natl Lab, Adv Detector Grp, Livermore, CA 94550 USA. Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. RP Melcher, CL (reprint author), CTI Mol Imaging Inc, Knoxville, TN 37932 USA. EM chuck.melcher@ctimi.com; Friedtich1@llnl.gov; cramer@lbl.gov; merry.spurrier@ctimi.com; piotr.szupryczynski@ctimi.com; ron.nutt@ctimi.com RI Melcher, Charles/E-9818-2012; OI Melcher, Charles/0000-0002-4586-4764; Koschan, Merry/0000-0002-8686-8657 NR 5 TC 25 Z9 27 U1 1 U2 17 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1809 EP 1812 DI 10.1109/TNS.2005.856594 PN 3 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700040 ER PT J AU Hartwell, JK Gehrke, RJ Mc Ilwain, ME AF Hartwell, JK Gehrke, RJ Mc Ilwain, ME TI Performance comparison of four compact room-temperature detectors - Two cadmium zinc telluride (CZT) semiconductor detectors, a LaCl3(Ce) scintillator, and an NaI(Tl) scintillator SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE gamma-ray spectroscopy detectors; LaCl3(Ce); scintillation detectors; room-temperature semiconductor detectors AB The performance characteristics of four compact, room-temperature detectors-two scintillators and two semiconductor detectors-were studied. All are commercially available detectors. The two scintillators were a circle minus 13 mm x 13 mm lanthanum chloride [LaCl3(Ce)] detector and a 025 turn x 25 mm sodium iodide [NaI(Ti)] detector. The two semiconductor detectors were a 10 x 10 x 3 mm(3) cadmium zinc telluride (CZT) detector with a coplanar gridded anode and a 5 x 5 x 5 mm(3) CZT detector with an extended cathode. The efficiency, resolution, and peak shape of these devices are compared. Since LaCl3(Ce) is a relatively new commercial scintillator material, additional information on the performance of this detector is presented. Specifically, the impact of naturally occurring radioactive La-138 and additional contamination from alpha-emitting radionuclides on the background measured with this detector are discussed. C1 Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Hartwell, JK (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. EM john.hartwell@inl.gov NR 14 TC 1 Z9 2 U1 1 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1813 EP 1818 DI 10.1109/TNS.2005.856599 PN 3 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700041 ER PT J AU Harkonen, J Tuovinen, E Luukka, P Tuominen, E Li, Z AF Harkonen, J Tuovinen, E Luukka, P Tuominen, E Li, Z TI p(+)/n(-)/n(+) Cz-Si detectors processed on p-type boron-doped substrates with thermal donor induced space charge sign inversion SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE Czochralski silicon; particle detector; thermal donor ID CZOCHRALSKI SILICON AB We have processed pad detectors on high-resistivity p-type Cz-Si wafers. The resistivity of the boron-doped silicon is approximately 1.8 k Omega cm after the crystal growth. The detector processing was carried out using the common procedure for standard n-type wafers, to produce p(+)/p/p(-)/n(+) detector structures. During the last process step, i.e., sintering of aluminum electrode, the p-type bulk was turned to n-type through generation of thermal donors (TD). This way, high oxygen concentration p(+)/n(-)/n(+) Cz-Si detectors were realized with low temperature process. The full depletion voltage of detectors could be tailored between wide range front 30 V up to close 1000 V by changing heat treatment at 400 degrees C-450 degrees C duration from 20 to 80 min. The space charge sign inversion (SCSI) in the TD generated devices (from p(+)/p(-)/n(+) to p(+)/n(-) (inverted)/n(+)) has been verified by transient current technique measurements. The detectors show very small increase of full depletion voltage after irradiations with 24 GeV/c protons up to 5 * 10(14) p/cm(2). C1 Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland. Brookhaven Natl Lab, Upton, NY 11973 USA. RP Harkonen, J (reprint author), Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland. EM jaakko.haerkoenen@cern.ch; zhengl@bnl.gov RI Tuominen, Eija/A-5288-2017; OI Tuominen, Eija/0000-0002-7073-7767; Luukka, Panja/0000-0003-2340-4641 NR 17 TC 7 Z9 7 U1 0 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1865 EP 1868 DI 10.1109/TNS.2005.856619 PN 3 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700050 ER PT J AU Ely, RP Weber, M Zimmermann, S Lu, RS Lujan, PJ AF Ely, RP Weber, M Zimmermann, S Lu, RS Lujan, PJ TI Shielding and electrical performance of silicon detector supermodules SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE interference; Run IIb; shielding; silicon detector; SVX4; tracking ID CDF RUN-IIB; SVX4 AB A large detector structure, called a supermodule, was developed for the CDF Run IIb silicon strip detector. The supermodule is a compact mechanical, thermal, and electrical unit, which is ideally suited for construction and assembly of large volume detector systems. Its dense packaging requires careful suppression of possible electromagnetic interference due to power, clock, control, and data bus activity. We study the coupling of the magnetic fields caused by a clock signal through an aluminum shield into the silicon strips. Analytical and numerical calculations of the resulting interference signal are presented, and its shape and size are estimated. The calculations are in fair agreement with electrical performance measurements taken with final design supermodules. Calculations and measurements show that the interference effect can be effectively suppressed by a thin aluminum shield. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Acad Sinica, Taipei 11529, Taiwan. Fermilab Natl Accelerator Lab, CDF Taiwan Grp, Batavia, IL 60510 USA. RP Ely, RP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM Rpely@lbl.gov; M.M.Weber@rl.ac.uk; Szimmermann@lbl.gov; Rslu@fnal.gov; Pjlujan@lbl.gov NR 10 TC 1 Z9 1 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1892 EP 1898 DI 10.1109/TNS.2005.856902 PN 3 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700056 ER PT J AU Ziegler, T Aihara, H Asano, Y Aso, T Bakich, A Barbero, M Browder, T Chang, MC Chao, Y Chen, KF Chidzik, S Chouvikov, A Dalseno, J Dowd, R Fernholz, R Fratina, S Friedl, M Fujii, H Fujiyama, Y Haba, J Hara, K Hara, T Harrop, B Haruyama, T Hayashi, K Hazumi, M Heffernan, D Higuchi, T Igarashi, A Igarashi, Y Ikeda, H Ishino, H Iwaida, S Kameshima, T Kapusta, P Kasami, K Kawasaki, T Kibayashi, A Koike, S Korpar, S Krizan, P Kurashiro, H Kusaka, A Lesiak, T Marlow, D Matsumoto, H Mikami, Y Miyake, H Moloney, GR Natkaniec, Z Nozaki, S Ohkubo, R Okuno, S Ono, S Onuki, Y Ostrowicz, W Ozaki, H Peak, L Pernicka, M Rosen, M Rozanska, M Sato, N Schmid, S Schumann, J Shibata, T Stamen, R Stanic, S Steininger, H Sumisawa, K Suzuki, J Tajima, H Tajima, O Takahashi, K Takasaki, F Tamura, N Tanaka, M Taylor, GN Trabelsi, K Tsuboyama, T Uchida, K Ueno, K Ueno, K Ushiroda, Y Vahsen, S Varner, G Varvell, K Velikzhanin, YS Wang, CC Wang, MZ Watanabe, M Watanabe, Y Yamamoto, H Yamashita, Y Yamauchi, M Yang, R Yasu, Y Zontar, D AF Ziegler, T Aihara, H Asano, Y Aso, T Bakich, A Barbero, M Browder, T Chang, MC Chao, Y Chen, KF Chidzik, S Chouvikov, A Dalseno, J Dowd, R Fernholz, R Fratina, S Friedl, M Fujii, H Fujiyama, Y Haba, J Hara, K Hara, T Harrop, B Haruyama, T Hayashi, K Hazumi, M Heffernan, D Higuchi, T Igarashi, A Igarashi, Y Ikeda, H Ishino, H Iwaida, S Kameshima, T Kapusta, P Kasami, K Kawasaki, T Kibayashi, A Koike, S Korpar, S Krizan, P Kurashiro, H Kusaka, A Lesiak, T Marlow, D Matsumoto, H Mikami, Y Miyake, H Moloney, GR Natkaniec, Z Nozaki, S Ohkubo, R Okuno, S Ono, S Onuki, Y Ostrowicz, W Ozaki, H Peak, L Pernicka, M Rosen, M Rozanska, M Sato, N Schmid, S Schumann, J Shibata, T Stamen, R Stanic, S Steininger, H Sumisawa, K Suzuki, J Tajima, H Tajima, O Takahashi, K Takasaki, F Tamura, N Tanaka, M Taylor, GN Trabelsi, K Tsuboyama, T Uchida, K Ueno, K Ueno, K Ushiroda, Y Vahsen, S Varner, G Varvell, K Velikzhanin, YS Wang, CC Wang, MZ Watanabe, M Watanabe, Y Yamamoto, H Yamashita, Y Yamauchi, M Yang, R Yasu, Y Zontar, D TI The improved ladder production for the Belle silicon vertex detector (SVD2.1) SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE bonding; flexes; front-end readout electronics; silicon vertex detector AB In autumn :2003, data taking with the new silicon vertex detector SVD2.0 in Belle started at the KEK-B energy-asymmetric e(+)e(-) collider in Tsukuba, Japan. The detector works as expected, however, it was decided to produce replacement ladders for the inner two layers of the vertex detector which are most exposed to the high radiation dose from the beam. The new ladders do not merely reproduce the existing design but include some significant improvements. The readout electronics is implemented on a hybrid board with a new heat transfer scheme in order to dissipate the heat produced in the front-end readout chip. The flex circuits that connect the double-sided silicon sensors (DSSDs) with the hybrid boards were redesigned using a 2-layer technique which improved the production quality and lowered their costs significantly. Production and testing will be finished in summer 2005 and will provide Belle with spare ladders as well as new expertise for possible future projects for example the high luminosity B-factory. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA. Kanagawa Univ, Fac Engn, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan. Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland. Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia. Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia. Nihon Dent Coll, Niigata 9518151, Japan. Niigata Univ, Grad Sch Sci & Technol, Niigata 9502181, Japan. Osaka Univ, Dept Phys, Grad Sch Med, Toyonaka, Osaka 5600043, Japan. Princeton Univ, Dept Phys, Princeton, NJ 08544 USA. Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia. Natl Taiwan Univ, Dept Phys, HEP Lab, Taipei 10764, Taiwan. Tohoku Univ, Dept Phys, HEP Grp, Aoba Ku, Sendai, Miyagi 9808578, Japan. Tokyo Inst Technol, Dept Phys, Grp HP, Meguro Ku, Tokyo 1528551, Japan. Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan. Toyama Natl Coll Maritime Technol, Toyama, Japan. KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305080, Japan. Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan. RP Ziegler, T (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,Mail Stop 6222, Berkeley, CA 94720 USA. RI Aihara, Hiroaki/F-3854-2010; Marlow, Daniel/C-9132-2014; Ishino, Hirokazu/C-1994-2015; Kibayashi, Atsuko/K-7327-2015; OI Krizan, Peter/0000-0002-4967-7675; Aihara, Hiroaki/0000-0002-1907-5964; Ishino, Hirokazu/0000-0002-8623-4080; Trabelsi, Karim/0000-0001-6567-3036; Moloney, Glenn/0000-0002-3539-3233 NR 3 TC 0 Z9 0 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1907 EP 1911 DI 10.1109/TNS.2005.856626 PN 3 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700059 ER PT J AU Carini, GA Bolotnikov, AE Camarda, GS Wright, GW De Geronimo, G Siddons, DP James, RB AF Carini, GA Bolotnikov, AE Camarda, GS Wright, GW De Geronimo, G Siddons, DP James, RB TI Synchrotron radiation response characterization of coplanar grid CZT detectors SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID CDZNTE DETECTORS; ELECTRODES AB Commercial 15 x 15 x 7.5 mm(3) coplanar grid CdZnTe detectors were studied on the micron-scale using a collimated high-energy X-ray beam provided by Brookhaven's National Synchrotron Light Source. This powerful tool enables simultaneous studies of detector response uniformity, electronic properties of the material, and effects related to the device's contact pattern and electric field distribution. The availability of a front-end Application Specific Integrated Circuit, developed at Brookhaven's Instrumentation Division, providing low noise amplification of grids and cathode signals, corresponding timing signal and adjustable relative gain, allowed to correlate performance mapping and fluctuations in collected charge. We observed the effect of the strip contacts comprising the coplanar grids on the energy resolution of the coplanar-grid device. C1 Brookhaven Natl Lab, Nonproliferat & Natl Secur Dept, Upton, NY 11973 USA. Univ Palermo, Dept Elect Engn, I-90128 Palermo, Italy. Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Carini, GA (reprint author), Brookhaven Natl Lab, Nonproliferat & Natl Secur Dept, Upton, NY 11973 USA. EM carini@bnl.gov NR 14 TC 17 Z9 17 U1 0 U2 8 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 1941 EP 1944 DI 10.1109/TNS.2005.856759 PN 3 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700065 ER PT J AU De Geronimo, G Carini, G Murray, WS O'Connor, P AF De Geronimo, G Carini, G Murray, WS O'Connor, P TI Front-end ASIC for co-planar grid sensors SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE ASIC; co-planar grid; noise correlation ID CDZNTE DETECTORS; NOISE AB An Application Specific Integrated Circuit for Cadmium Zinc Telluride Co-Planar Grid sensors is presented. The ASIC provides low-noise amplification of grids and cathode signals, difference between grid signals with adjustable relative gain, shaped signals with baseline stabilization, and timing signals. In the current version the peaking time of the shaped pulses is 5 mu s and the gain can be switched between 36 mV/fC and 18 mV/fC covering an energy range up to 3 MeV. Designed in CMOS 0.25 mu m technology it dissipates 25 mW from a single +2.5 V supply. A description of the ASIC and the results of its characterization with CdZnTe CPG sensors are presented. The system is analyzed in terms of resolution, and the impact of the noise correlation due to the inter-grid capacitance is discussed. C1 Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA. Brookhaven Natl Lab, Energy Environm & Natl Secur Directorate, Upton, NY 11973 USA. Los Alamos Natl Lab, Nucl Nonproliferat Div, Los Alamos, NM 87545 USA. RP De Geronimo, G (reprint author), Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA. EM degeronimo@bnl.gov NR 13 TC 3 Z9 3 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 2003 EP 2008 DI 10.1109/TNS.2005.856871 PN 3 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700077 ER PT J AU Bell, ZW West, WG Pohl, KR van den Berg, L AF Bell, ZW West, WG Pohl, KR van den Berg, L TI Monte Carlo analysis of a mercuric iodide neutron/gamma detector SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE mercuric iodide; Monte Carlo methods; neutron detectors AB The response to neutrons of a 27 x 27 x 2.6 mm. HgI2 detector covered on one face with a layer of boron was modeled with MCNP5 and MCNP-PoliMi. It was found that the detection of the 478 keV gamma ray from the B-10 (n, alpha) and the 368 keV gamma ray from the Hg-199 (n, alpha) could be used to estimate the average energy of incident neutrons and that these gamma rays could be used to distinguish between unmoderated radioactive and fission sources. C1 Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. Univ Michigan, Dept Nucl Engn & Radiol Sci, Ann Arbor, MI 48109 USA. Constellat Technol Corp, Largo, FL 33773 USA. RP Bell, ZW (reprint author), Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. EM bellzw@ornl.gov; pilatus@umich.edu; pohl@contech.com; lvdberg@contech.com OI Bell, Zane/0000-0003-1115-8674 NR 4 TC 2 Z9 2 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 2030 EP 2034 DI 10.1109/TNS.2005.856764 PN 3 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700081 ER PT J AU Luke, PN Amman, M Lee, JS Vu, CQ AF Luke, PN Amman, M Lee, JS Vu, CQ TI Pocket-size CdZnTe gamma-ray spectrometer SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE gamma-ray spectroscopy detectors; semiconductor devices ID DETECTORS AB A pocket-size gamma-ray spectrometer has been developed. It uses a large volume (2 cm(3)) CdZnTe coplanar-grid detector to achieve good detection efficiency and energy resolution. The spectrometer is completely self-contained. It includes pulse processing electronics, multichannel analyzer, data storage, LCD display, keypads, USB interface, and rechargeable battery. Custom software was created for spectrum acquisition, storage, and display. The power consumption of the spectrometer is 120 mW when active, allowing two days of continuous operation on a full battery charge. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Luke, PN (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM pnluke@lbl.gov NR 8 TC 2 Z9 2 U1 1 U2 6 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 2041 EP 2044 DI 10.1109/TNS.2005.856732 PN 3 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700083 ER PT J AU Watanabe, S Tanaka, T Nakazawa, K Mitani, T Oonuki, K Takahashi, T Takashima, T Tajima, H Fukazawa, Y Nomachi, M Kubo, S Onishi, M Kuroda, Y AF Watanabe, S Tanaka, T Nakazawa, K Mitani, T Oonuki, K Takahashi, T Takashima, T Tajima, H Fukazawa, Y Nomachi, M Kubo, S Onishi, M Kuroda, Y TI A Si/CdTe semiconductor Compton camera SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE CdTe; Compton camera; gamma-ray astronomy detectors; gamma-ray spectroscopy detectors; silicon radiation detectors ID GAMMA-RAY DETECTORS; SCHOTTKY CDTE DIODE; X-RAY; RESOLUTION; TELESCOPE; ENERGY; POLARIZATION; ASTRONOMY; MISSION AB We are developing a Compton camera based on Si and CdTe semiconductor imaging devices with high energy resolution. In this paper, results from the most recent prototype are reported. The Compton camera consists of six layered double-sided Si Strip detectors and CdTe pixel detectors, which are read out with low noise analog ASICs. VA32TAs. We obtained Compton reconstructed images and spectra of line gamma-rays from 122 keV to 662 keV The energy resolution is 9.1 keV and 14 keV at 356 keV and 511 keno respectively. C1 Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan. Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA. Hiroshima Univ, Dept Phys, Hiroshima 7398530, Japan. Osaka Univ, Nucl Studies Lab, Toyonaka, Osaka 5600043, Japan. Clear Pulse Ltd, Tokyo 1430024, Japan. Mitsubishi Heavy Ind Co Ltd, Nagoya Guidance & Propuls Syst Works, Komaki, Aichi 4850826, Japan. RP Watanabe, S (reprint author), Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan. NR 25 TC 48 Z9 48 U1 0 U2 10 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD OCT PY 2005 VL 52 IS 5 BP 2045 EP 2051 DI 10.1109/TNS.2005.856995 PN 3 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA 990ZK UT WOS:000233781700084 ER PT J AU Pinar, A Hendrickson, B AF Pinar, A Hendrickson, B TI Improving load balance with flexibly assignable tasks SO IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS LA English DT Article DE parallel computing; load balancing; flexibly assignable tasks; maximum flow; constrained least squares AB In many applications of parallel computing, distribution of the data unambiguously implies distribution of work among processors. But, there are exceptions where some tasks can be assigned to one of several processors without altering the total volume of communication. In this paper, we study the problem of exploiting this flexibility in assignment of tasks to improve load balance. We first model the problem in terms of network flow and use combinatorial techniques for its solution. Our parametric search algorithms use maximum flow algorithms for probing on a candidate optimal solution value. We describe two algorithms to solve the assignment problem with logW(T) and \P\ probe calls, where W-T and \P\, respectively, denote the total workload and number of processors. We also define augmenting paths and cuts for this problem, and show that any algorithm based on augmenting paths can be used to find an optimal solution for the task assignment problem. We then consider a continuous version of the problem and formulate it as a linearly constrained optimization problem, i.e., min parallel to Ax parallel to(infinity); s: t: Bx = d. To avoid solving an intractable infinity-norm optimization problem, we show that, in this case, minimizing the 2-norm is sufficient to minimize the infinity-norm, which reduces the problem to the well-studied linearly constrained least squares problem. The continuous version of the problem has the advantage of being easily amenable to parallelization. Our experiments with molecular dynamics and overlapped domain decomposition applications proved the effectiveness of our methods with significant improvements in load balance. We also discuss how our techniques can be extended to heterogeneous parallel computers. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, High Performance Comp Res Dept, Berkeley, CA 94720 USA. Sandia Natl Labs, Discrete Algorithms & Math Dept, Albuquerque, NM 87185 USA. RP Pinar, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, High Performance Comp Res Dept, Berkeley, CA 94720 USA. EM apinar@lbl.gov; bah@sandia.gov NR 17 TC 3 Z9 3 U1 0 U2 1 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA SN 1045-9219 J9 IEEE T PARALL DISTR JI IEEE Trans. Parallel Distrib. Syst. PD OCT PY 2005 VL 16 IS 10 BP 956 EP 965 DI 10.1109/TPDS.2005.123 PG 10 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA 957FR UT WOS:000231355600006 ER PT J AU Shkol'nik, SM Struve, KW AF Shkol'nik, SM Struve, KW TI Special Issue on Vacuum Discharge Plasmas SO IEEE TRANSACTIONS ON PLASMA SCIENCE LA English DT Editorial Material C1 Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. Sandia Natl Labs, Dept 1644, Albuquerque, NM 87185 USA. RP Shkol'nik, SM (reprint author), Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0093-3813 J9 IEEE T PLASMA SCI JI IEEE Trans. Plasma Sci. PD OCT PY 2005 VL 33 IS 5 SI SI BP 1454 EP 1455 DI 10.1109/TPS.2005.856497 PN 1 PG 2 WC Physics, Fluids & Plasmas SC Physics GA 976MI UT WOS:000232737200001 ER PT J AU Anders, A AF Anders, A TI The fractal nature of vacuum arc cathode spots SO IEEE TRANSACTIONS ON PLASMA SCIENCE LA English DT Article; Proceedings Paper CT 21st International Symposium on Discharges and Electrical Insulation in Vacuum CY SEP 27-OCT 01, 2004 CL Yalta, UKRAINE SP Tavrida Elect, IEEE, DEIS, Sandia Natl Labs, ABB, Toshiba, Rusian Acad Sci DE cathode spot; fast Fourier transform; fractals random colored noise; vacuum arcs ID RANDOM-WALK; CURRENT-DENSITY; FLUCTUATIONS; EMISSION; BEHAVIOR; NOISE; FIELD AB Cathode spot phenomena show many features of fractals, for example self-similar patterns in the emitted light and arc erosion traces. Although there have been hints on the fractal nature of cathode spots in the literature, the fractal approach to spot interpretation is underutilized. In this work, a brief review of spot properties is given, touching the differences between spot type 1 (on cathodes surfaces with dielectric layers) and spot type 2 (on metallic, clean surfaces), as well as the known spot fragment or cell structure. The basic properties of self-similarity, power laws, random colored noise, and fractals are introduced. Several points of evidence for the fractal nature of spots are provided. Specifically, power laws are identified as signature of fractal properties, such as spectral power of noisy arc parameters (ion current, arc voltage, etc) obtained by fast Fourier transform. It is shown that fractal properties can be observed down to the cutoff by measurement resolution or occurrence of elementary steps in physical processes. Random walk models of cathode spot motion are well established: they go asymptotically to Brownian motion for infinitesimal step width. The power spectrum of the arc voltage noise falls as 1/f(2), where f is frequency, supporting a fractal spot model associated with Brownian motion. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Anders, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM aanders@lbl.gov RI Anders, Andre/B-8580-2009 OI Anders, Andre/0000-0002-5313-6505 NR 64 TC 37 Z9 38 U1 1 U2 7 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0093-3813 EI 1939-9375 J9 IEEE T PLASMA SCI JI IEEE Trans. Plasma Sci. PD OCT PY 2005 VL 33 IS 5 SI SI BP 1456 EP 1464 DI 10.1109/TPS.2005.856488 PN 1 PG 9 WC Physics, Fluids & Plasmas SC Physics GA 976MI UT WOS:000232737200002 ER PT J AU Anders, A Oks, EM Yushkov, GY Savkin, KP Brown, IG Nikolaev, AG AF Anders, A Oks, EM Yushkov, GY Savkin, KP Brown, IG Nikolaev, AG TI Measurements of the total ion flux from vacuum arc cathode spots SO IEEE TRANSACTIONS ON PLASMA SCIENCE LA English DT Article; Proceedings Paper CT 21st International Symposium on Discharges and Electrical Insulation in Vacuum CY SEP 27-OCT 01, 2004 CL Yalta, UKRAINE SP Tavrida Elect, IEEE, DEIS, Sandia Natl Labs, ABB, Toshiba, Rusian Acad Sci DE cathodic vacuum arcs; ion current; ion erosion rates; ion flux ID CHARGE-STATE DISTRIBUTIONS; MAGNETIC-FIELD; EROSION; PLASMAS; IONIZATION; MECHANISM; ORIGIN AB The ion current from different cathode materials was measured for 50-500 A of arc current. The ion current normalized by the arc current was found to depend on the cathode material, with values in the range from 5% to 19%. The normalized ion current was generally greater for elements of low cohesive energy. The ion erosion rates were determined from values of ion current and ion charge states, which were previously measured in the same ion source. The absolute ion erosion rates ranged from 16-173 mu g/C. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Russian Acad Sci, Inst High Current Elect, Tomsk 634055, Russia. RP Anders, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Oks, Efim/A-9409-2014; Anders, Andre/B-8580-2009; Yushkov, Georgy/O-8024-2015; Nikolaev, Alexey/R-2154-2016 OI Oks, Efim/0000-0002-9323-0686; Anders, Andre/0000-0002-5313-6505; Yushkov, Georgy/0000-0002-7615-6058; Nikolaev, Alexey/0000-0003-2724-3697 NR 32 TC 28 Z9 28 U1 2 U2 10 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0093-3813 EI 1939-9375 J9 IEEE T PLASMA SCI JI IEEE Trans. Plasma Sci. PD OCT PY 2005 VL 33 IS 5 SI SI BP 1532 EP 1536 DI 10.1109/TPS.2005.856502 PN 1 PG 5 WC Physics, Fluids & Plasmas SC Physics GA 976MI UT WOS:000232737200014 ER PT J AU Cantu-Paz, E Kamath, C AF Cantu-Paz, E Kamath, C TI An empirical comparison of combinations of evolutionary algorithms and neural networks for classification problems SO IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART B-CYBERNETICS LA English DT Article DE classification; evolutionary algorithms; feature election; machine learning; network design; training algorithms ID FEATURE SUBSET-SELECTION; LEARNING ALGORITHMS; GENETIC ALGORITHMS; OPTIMIZATION AB There are numerous combinations of neural networks (NNs) and evolutionary algorithms (EAs) used in classification problems. EAs have been used to train the networks, design their architecture, and select feature subsets. However, most of these combinations have been tested on only a few data sets and many comparisons are done inappropriately measuring the performance in training data or without using proper statistical tests to support the conclusions. This paper presents an empirical evaluation of light combinations of EAs and NNs on 15 public-domain and artificial data sets. Our objective is to identify the methods that consistently produce accurate classifiers that generalize well. In most cases, the combinations of EAs and NNs perform equally well on the data sets we tried and were not more accurate than hand-designed neural networks trained with simple backpropagation. C1 Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94605 USA. RP Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94605 USA. EM cantupaz@acm.org; kamath2@llnl.gov NR 65 TC 70 Z9 70 U1 1 U2 6 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1083-4419 EI 1941-0492 J9 IEEE T SYST MAN CY B JI IEEE Trans. Syst. Man Cybern. Part B-Cybern. PD OCT PY 2005 VL 35 IS 5 BP 915 EP 927 DI 10.1109/TSMCB.2005.847740 PG 13 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Computer Science, Cybernetics SC Automation & Control Systems; Computer Science GA 971KZ UT WOS:000232384200006 PM 16240768 ER PT J AU Shaw, WJ Linehan, JC Gutowska, A Newell, D Bitterwolf, T Fulton, JL Chen, YS Windisch, CF AF Shaw, WJ Linehan, JC Gutowska, A Newell, D Bitterwolf, T Fulton, JL Chen, YS Windisch, CF TI Synthesis and characterization of a recoverable rhodium catalyst with a stimulus sensitive polymer ligand SO INORGANIC CHEMISTRY COMMUNICATIONS LA English DT Article DE rhodium catalysis; recoverable catalysts; stimulus sensitive catalysts; stimulus sensitive polymers ID SOLUBLE POLYMERS; POLY(N-ISOPROPYLACRYLAMIDE); COMPLEXES AB We report the synthesis and characterization of a rhodium catalyst attached to a polymer which is designed to control catalyst reactivity in response to an applied stimulus. The catalyst precursor, Rh(Cl)(CO)(2)(NH2-polymer), was prepared from poly N-iso-propylacrylamide (pNIPAAm) and [Rh(Cl)(CO)(2)](2). The structure of the metal complex was interrogated using IR, Raman, UV/ Vis, NMR and XAFS, and catalytic activity was tested using an aqueous hydrogenation reaction. (c) 2005 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Fundamental Sci Directorate, Richland, WA 99352 USA. Univ Idaho, Dept Chem, Moscow, ID 83844 USA. RP Shaw, WJ (reprint author), Pacific NW Natl Lab, Fundamental Sci Directorate, POB 999, Richland, WA 99352 USA. EM wendy.shaw@pnl.gov RI Chen, Yongsheng/P-4800-2014 NR 20 TC 10 Z9 10 U1 0 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1387-7003 J9 INORG CHEM COMMUN JI Inorg. Chem. Commun. PD OCT PY 2005 VL 8 IS 10 BP 894 EP 896 DI 10.1016/j.inoche.2005.07.001 PG 3 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 968VQ UT WOS:000232191400007 ER PT J AU Korsah, K Murray, W Tomkins, B AF Korsah, K Murray, W Tomkins, B TI Hydrazine scene: It's a gas SO INTECH LA English DT Article C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Korsah, K (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. OI Tomkins, Bruce/0000-0001-8520-1415 NR 0 TC 0 Z9 0 U1 0 U2 0 PU INSTRUMENT SOCIETY AMERICA PI RES TRIANGLE PK PA 67 ALEXANDER DRIVE, P O BOX 12277, RES TRIANGLE PK, NC 27709 USA SN 0192-303X J9 INTECH JI Intech PD OCT PY 2005 VL 52 IS 10 BP 48 EP 50 PG 3 WC Engineering, Multidisciplinary; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA 976SZ UT WOS:000232754900018 ER PT J AU Massoudi, M AF Massoudi, M TI On the heat flux vector in mixtures SO INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER LA English DT Article DE mixtures; Fourier's heat conduction; particulate matter; heat flux vector; continuum theory ID EFFECTIVE THERMAL-CONDUCTIVITY; GRANULAR-MATERIALS; CONTINUUM THEORIES; FLOWS; BEDS AB In this paper we use the standard Mixture Theory (Theory of Interacting Continua) and Representation Theorems to derive a simple constitutive relationship for the heat flux vector of a mixture composed of a viscous fluid infused with solid granular materials. For certain limiting and specialized cases, an effective thermal conductivity of the mixture is also derived. Published by Elsevier Ltd. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Massoudi, M (reprint author), US DOE, Natl Energy Technol Lab, POB 10940, Pittsburgh, PA 15236 USA. EM Massoudi@netl.doe.gov NR 29 TC 4 Z9 4 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0735-1933 J9 INT COMMUN HEAT MASS JI Int. Commun. Heat Mass Transf. PD OCT PY 2005 VL 32 IS 9 BP 1128 EP 1134 DI 10.1016/j.icheatmasstransfer.2005.05.010 PG 7 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA 973FO UT WOS:000232508500003 ER PT J AU Kollias, AC Domin, D Hill, G Frenklach, M Golden, DM Lester, WA AF Kollias, AC Domin, D Hill, G Frenklach, M Golden, DM Lester, WA TI Quantum Monte Carlo study of heats of formation and bond dissociation energies of small hydrocarbons SO INTERNATIONAL JOURNAL OF CHEMICAL KINETICS LA English DT Article ID MOLECULAR VIBRATIONAL ANHARMONICITY; HIGHER-DERIVATIVE METHODS; ROTATION INTERACTION; GAUSSIAN-1 THEORY; RESONANCE ENERGY; ALKYL RADICALS; BASIS-SETS; H BOND; THERMOCHEMISTRY; KINETICS AB A quantum Monte Carlo (OMC) benchmark study of heats of formation at 298 K and bond dissociation energies (BDEs) of 22 small hydrocarbons is reported. Diffusion Monte Carlo (DMC) results, obtained using a simple product trial wavefunctions consisting of a single determinant and correlation function, are compared to experiment and to other theory including a version of complete basis set theory (CBS-O) and density functional theory (DFT) with the B3LYP functional. For heats of formation, the findings are a mean absolute deviation from experiment of 1.2 kcal/mol for CBS-O, 2.0 kcal/mol for B3LYP, and 2.2 kcal/mol for DMC. The mean absolute deviation of 31 BDEs is 2.0 kcal/mol for CBS-O, 4.2 kcal/mol for B3LYP, and 2.5 kcal/mol for DMC. These findings are for 17 BDEs of closed-shell molecules that have mean absolute deviations from experiment of 1.7 kcal/mol (CBS-O), 4.0 kcal/mol (B3LYP), and 2.2 kcal/mol (DMC). The corresponding results for the 14 BDEs of open-shell molecules studied are 2.4 kcal/mol (CBS-O), 4.3 kcal/mol (B3LYP), and 2.9 kcal/mol (DMC). The DMC results provide a baseline from which improvement using muttideterminant trial functions can be measured. (c) 2005 Wiley Periodicals, Inc. C1 Univ Calif Berkeley, Dept Chem, Kennth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Jackson State Univ, Computat Ctr Mol Struct & Interact, Jackson, MS 39217 USA. Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. Stanford Univ, Dept Engn Mech, Stanford, CA 94305 USA. RP Lester, WA (reprint author), Univ Calif Berkeley, Dept Chem, Kennth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA. EM walester@lbl.gov NR 79 TC 9 Z9 9 U1 2 U2 5 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0538-8066 J9 INT J CHEM KINET JI Int. J. Chem. Kinet. PD OCT PY 2005 VL 37 IS 10 BP 583 EP 592 DI 10.1002/kin.20063 PG 10 WC Chemistry, Physical SC Chemistry GA 966GK UT WOS:000232007900001 ER PT J AU Espenson, JH Yiu, DTY AF Espenson, JH Yiu, DTY TI Kinetics and activation energy of the oxidation of para-tolyl radical by cobalt(III) in acetic acid: Competition kinetics SO INTERNATIONAL JOURNAL OF CHEMICAL KINETICS LA English DT Article ID PARA-XYLENE; BROMIDE CATALYSIS; METAL COCATALYSTS; ORGANIC-COMPOUNDS; ELECTRON-TRANSFER; DIVALENT COBALT; ALKYL RADICALS; RATE-CONSTANT; AUTOXIDATION; MECHANISM AB The title reaction gives rise to a benzylic cation that is rapidly transformed to its bromide in competition with the reaction of the radical with carbon tetrachloride. Experiments were carried out over 17-69 degrees C in acetic acid containing cobalt(II) acetate, pora-xylene, hydrobromic acid, carbon tetrachloride, and metci-chloroperoxybenzoic acid, The product ratio, ArCH(2)Cl/ArCH(2)Br, in combination with other pertinent rate constants, was used to determine the rate constant for the step of interest: log k (L mol(-1) s(-1)) 19.9 - (75 +/- 11 kj mol(-1)/2.303 RT). The large pre-exponential factor, which gives Delta S(double dagger) = 128 J K(-1) mol(-1), signals an unusual transition state, because a negative value of Delta S(double dagger) would be expected for a simple bimolecular reaction. The production of the ion pair ArCH(2)(+)parallel to JOAc(-) in HOAc, which has the same dielectric constant as benzene, may be responsible, at least in part. Furthermore, inner sphere reorganization of cobalt may also contribute. (c) 2005 Wiley Periodicals, Inc. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Espenson, JH (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. EM espenson@iastate.edu NR 26 TC 0 Z9 0 U1 4 U2 10 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0538-8066 J9 INT J CHEM KINET JI Int. J. Chem. Kinet. PD OCT PY 2005 VL 37 IS 10 BP 599 EP 604 DI 10.1002/kin.20116 PG 6 WC Chemistry, Physical SC Chemistry GA 966GK UT WOS:000232007900003 ER PT J AU Potirniche, GP Horstemeyer, MF Jelinek, B Wagner, GJ AF Potirniche, GP Horstemeyer, MF Jelinek, B Wagner, GJ TI Fatigue damage in nickel and copper single crystals at nanoscale SO INTERNATIONAL JOURNAL OF FATIGUE LA English DT Article; Proceedings Paper CT 5th International Conference on Fatigue Damage in Structural Materials CY SEP 19-24, 2004 CL Hyannis, MA SP Def Adv Res Projects Agcy, US Off Naval Res Int Field Off, USAF Res Lab, US Off Naval Res Headquarters, USA Res Off DE persistent slip bands; fatigue crack growth; nickel; copper; single crystal; molecular dynamics ID TEMPERATURE CYCLIC DEFORMATION; EMBEDDED-ATOM METHOD; MOLECULAR-DYNAMICS; BEHAVIOR; FRACTURE; SIMULATION; METALS; STRAIN AB Nanoscale fatigue damage simulations using molecular dynamics were performed in nickel and copper single crystals. Cyclic stress-strain curves and fatigue crack growth were investigated using a middle-tension (MT) specimen with the lateral sides allowing periodic boundary conditions to simulate a small region of material as a part of a larger component. The specimen dimensions were in the range of nanometers, and the fatigue loading was strain controlled under constant and variable amplitude. Four crystal orientations, [111], [100], [110] and [101] were analyzed, and the results indicated that the plastic deformation and fatigue crack growth rates vary widely from one orientation to another. Under increasing strain amplitude loading, nickel nanocrystals experienced a large amount of plastic deformation causing at least in one orientation, [101], out-of-plane crack deviation in a mixed mode I+ II growth. Under constant amplitude loading, the fatigue cracks were a planar mode I type. Double slip is observed for some orientations, while for others, many more slip systems were activated causing a more evenly distributed plastic region around the crack tip. A comparative analysis revealed that small cracks grow more rapidly in copper than in nickel single crystals. (c) 2005 Elsevier Ltd. All rights reserved. C1 Mississippi State Univ, Ctr Adv Vehicular Syst, Mississippi State, MS 39762 USA. Sandia Natl Labs, Livermore, CA USA. RP Mississippi State Univ, Ctr Adv Vehicular Syst, Box 5405, Mississippi State, MS 39762 USA. EM gabriel@cavs.msstate.edu RI Jelinek, Bohumir/C-4376-2008; Wagner, Gregory/I-4377-2015; OI Jelinek, Bohumir/0000-0002-2622-4235; Horstemeyer, Mark/0000-0003-4230-0063 NR 20 TC 21 Z9 22 U1 2 U2 10 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0142-1123 EI 1879-3452 J9 INT J FATIGUE JI Int. J. Fatigue PD OCT-DEC PY 2005 VL 27 IS 10-12 BP 1179 EP 1185 DI 10.1016/j.ijfatigue.2005.06.015 PG 7 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA 986ZD UT WOS:000233487300008 ER PT J AU Croft, M Zhong, Z Jisrawi, N Zakharchenko, I Holtz, RL Skaritka, J Fast, T Sadananda, K Lakshmipathy, M Tsakalakos, T AF Croft, M Zhong, Z Jisrawi, N Zakharchenko, I Holtz, RL Skaritka, J Fast, T Sadananda, K Lakshmipathy, M Tsakalakos, T TI Strain profiling of fatigue crack overload effects using energy dispersive X-ray diffraction SO INTERNATIONAL JOURNAL OF FATIGUE LA English DT Article; Proceedings Paper CT 5th International Conference on Fatigue Damage in Structural Materials CY SEP 19-24, 2004 CL Hyannis, MA SP Def Adv Res Projects Agcy, US Off Naval Res Int Field Off, USAF Res Lab, US Off Naval Res Headquarters, USA Res Off DE fatigue; strain; X-ray; synchrotron; overload ID RESIDUAL-STRESSES; SYNCHROTRON DIFFRACTION; SINGLE; GROWTH; STEEL AB Synchrotron based energy dispersive X-ray diffraction has been used to profile the strains around fatigue cracks in 4140 steel test specimens. In particular strain field comparisons were made on specimens prepared: with initial constant stress intensity fatigue; with this initial fatigue followed by a single overload cycle; and with this fatigue-overload sequence followed by an additional constant stress intensity fatigue. The strain profiles behind, at and in-front-of the crack tip are discussed in detail. Selected strain profiles measurements under in situ applied tensile stress are also presented. The technique of optical surface height profiling reveals surface depression effects which can be correlated with the interior strain profiles. (c) 2005 Elsevier Ltd. All rights reserved. C1 Rutgers State Univ, Dept Phys, Piscataway, NJ 08854 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. Rutgers State Univ, Dept Ceram, Piscataway, NJ 08854 USA. USN, Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA. Zygo Corp, Middlefield, CT 06455 USA. RP Croft, M (reprint author), Rutgers State Univ, Dept Phys, Piscataway, NJ 08854 USA. EM croft@physics.rutgers.edu NR 15 TC 42 Z9 43 U1 1 U2 8 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0142-1123 J9 INT J FATIGUE JI Int. J. Fatigue PD OCT-DEC PY 2005 VL 27 IS 10-12 BP 1408 EP 1419 DI 10.1016/j.ijfatigue.2005.06.022 PG 12 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA 986ZD UT WOS:000233487300035 ER PT J AU Wood, AM Hwang, W Eaton, JK AF Wood, AM Hwang, W Eaton, JK TI Preferential concentration of particles in homogeneous and isotropic turbulence SO INTERNATIONAL JOURNAL OF MULTIPHASE FLOW LA English DT Article DE particle dispersion; preferential concentration; homogeneous isotropic turbulence ID HEAVY-PARTICLES; FLOW C1 Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA. RP Hwang, W (reprint author), Sandia Natl Labs, Combust Res Facil, Engine Combust Dept, POB 969,MS 9053, Livermore, CA 94551 USA. EM wthwang@stanfordalumni.org NR 8 TC 66 Z9 67 U1 1 U2 10 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0301-9322 J9 INT J MULTIPHAS FLOW JI Int. J. Multiph. Flow PD OCT-NOV PY 2005 VL 31 IS 10-11 BP 1220 EP 1230 DI 10.1016/j.ijmultiphaseflow.2005.07.001 PG 11 WC Mechanics SC Mechanics GA 984UG UT WOS:000233329200008 ER PT J AU Hansson, A Marin, YE Suh, J Rabson, AB Chen, SZ Huberman, E Chang, RL Conney, AH Zheng, X AF Hansson, A Marin, YE Suh, J Rabson, AB Chen, SZ Huberman, E Chang, RL Conney, AH Zheng, X TI Enhancement of TPA-induced growth inhibition and apoptosis in myeloid leukemia cells by BAY 11-7082, an NF-kappa B inhibitor SO INTERNATIONAL JOURNAL OF ONCOLOGY LA English DT Article DE apoptosis; myeloid leukemia; NF-kappa B inhibitor ID TRANS-RETINOIC ACID; PROTEIN-KINASE-C; NECROSIS-FACTOR-ALPHA; 12-O-TETRADECANOYLPHORBOL-13-ACETATE TPA; MACROPHAGE DIFFERENTIATION; CANCER-THERAPY; PHORBOL ESTER; U937 CELLS; ACTIVATION; INDUCTION AB The phorbol ester, 12-O-tetradecanoylphorbol-13-acetate (TPA) is a potent stimulator of differentiation and apoptosis in myeloid leukemia cells. In the present study, we investigated the role of the transcription factor NF-kappa B in TPA-induced growth inhibition and apoptosis in the myeloid leukemia HL-60 cell line and its TPA-resistant cell variant HL-525. Unlike the parental cell line, HL-525 cells are protein kinase C (PKC)-ss deficient and resistant to TPA-induced differentiation and apoptosis. We found that treatment of HL-60 cells with TPA resulted in a concentration-dependent growth inhibition and an increase in apoptotic cells. TPA only had a small effect on growth and apoptosis in HL-525 cells. Treatment of HL-60 cells with TPA (0.64-3.2 nM) caused a rapid activation of NF-kappa B as determined by electrophoresis mobility shift assay (EMSA) and immunocytochemistry. Although the basal level of NF-kappa B activity was low in HL-60 cells, TPA-resistant HL-525 cells had a high basal level of NF-kappa B activity. Treatment of HL-525 cells with higher concentrations of TPA (16-80 nM) resulted in a further increase in NF-kappa B activity. (E)3-[(4-methylphenyl)-sulfonyl]-2-propenenitrile (BAY 11-7082; BAY), which inhibits I kappa B alpha phosphorylation and thus decreases NF-kappa B activation, was found to decrease TPA-induced nuclear translocation of NF-kappa B. Furthermore, BAY enhanced TPA-induced growth inhibition and apoptosis in both HL-60 and HL-525 cells. Results from the present study indicate that inhibition of NF-kappa B by BAY was associated with enhanced TPA-induced growth inhibition and apoptosis in human myeloid leukemia cells. TPA in combination with pharmacological inhibitors of NF-kappa B may improve the therapeutic efficacy of TPA and overcome the resistance to TPA in some myeloid leukemia patients. C1 Rutgers State Univ, Ernest Mario Sch Pharm, Dept Biol Chem, Susan Lehman Cullman Lab Canc Res, Piscataway, NJ 08854 USA. Rutgers State Univ, Ctr Adv Biotechnol & Med, Piscataway, NJ 08854 USA. Univ Med & Dent New Jersey, Robert Wood Johnson Med Sch, Piscataway, NJ 08854 USA. Canc Inst New Jersey, New Brunswick, NJ 08903 USA. Argonne Natl Labs, Biochip Technol Ctr, Argonne, IL 60439 USA. RP Zheng, X (reprint author), Rutgers State Univ, Ernest Mario Sch Pharm, Dept Biol Chem, Susan Lehman Cullman Lab Canc Res, 164 Frelinghuysen Rd, Piscataway, NJ 08854 USA. EM aconney@rci.rutgers.edu FU NCI NIH HHS [CA 092268, CA 80826] NR 42 TC 19 Z9 20 U1 0 U2 0 PU PROFESSOR D A SPANDIDOS PI ATHENS PA 1, S MERKOURI ST, EDITORIAL OFFICE,, ATHENS 116 35, GREECE SN 1019-6439 J9 INT J ONCOL JI Int. J. Oncol. PD OCT PY 2005 VL 27 IS 4 BP 941 EP 948 PG 8 WC Oncology SC Oncology GA 967JY UT WOS:000232088700009 PM 16142309 ER PT J AU Lebensohn, RA Castenau, O Brenner, R Gilormini, P AF Lebensohn, RA Castenau, O Brenner, R Gilormini, P TI Study of the antiplane deformation of linear 2-D polycrystals with different microstructures SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES LA English DT Article DE polycrystals; antiplane shear; homogenization; stress fluctuations ID FIELD FLUCTUATIONS; NONLINEAR COMPOSITES; VISCOPLASTIC POLYCRYSTALS; NUMERICAL-METHOD; HOMOGENIZATION; APPROXIMATION; SIMULATION; BEHAVIOR; GRAINS; NUMBER AB The effective behavior and the distribution of local mechanical fields of linearly viscous 2-D polycrystals under anti-plane shear is investigated. Several microstructures are considered, and a full-field approach based on the Fast Fourier Transform technique is applied. First, the accuracy of this technique is evaluated on a strictly isotropic 2-phase microstructure. Voronoi tessellation is then used to generate artificial microstructures, and a real (fully recrystallized) polycrystalline microstructure is obtained by electron back-scattering diffraction. Ensemble averages over several configurations using eight crystalline orientations (phases) are performed. Although a slight anisotropy is obtained for the effective behavior of each individual configuration, statistically, the results are in very good agreement with the available analytical isotropic solution. At phase level, a marked asymmetry is obtained for the distribution of local stresses. The intraphase first- and second-order moments of the stress field, calculated for both microstructures are compared with corresponding self-consistent predictions. Published by Elsevier Ltd. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87845 USA. Univ Paris 13, Inst Galilee, CNRS, UPR9001,LPMTM, F-93430 Villetaneuse, France. ENSAM, Lab Ingn Mat, F-75013 Paris, France. RP Lebensohn, RA (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87845 USA. EM lebenso@lanl.gov RI Lebensohn, Ricardo/A-2494-2008; OI Lebensohn, Ricardo/0000-0002-3152-9105; Castelnau, Olivier/0000-0001-7422-294X NR 28 TC 34 Z9 34 U1 2 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0020-7683 J9 INT J SOLIDS STRUCT JI Int. J. Solids Struct. PD OCT PY 2005 VL 42 IS 20 BP 5441 EP 5459 DI 10.1016/j.ijsolstr.2005.02.051 PG 19 WC Mechanics SC Mechanics GA 948HT UT WOS:000230707400009 ER PT J AU Phillips, J Tanski, J AF Phillips, J Tanski, J TI Structure and kinetics of formation and decomposition of corrosion layers formed on lithium compounds exposed to atmospheric gases SO INTERNATIONAL MATERIALS REVIEWS LA English DT Review DE alkali metals; lithium; corrosion; alkali corrosion model; hydrogen generation; thermal decomposition; water alkali reaction ID WATER-VAPOR; SINGLE-CRYSTALS; NITRIDE LI3N; TEMPERATURE; OXIDATION; HYDRIDE; LIH; HYDROGEN; LIOH; AIR AB A thorough review of the literature on the structure, growth kinetics and decomposition of (corrosion) layers formed upon the reaction of LiH and other lithium compounds with atmospheric gases, particularly water, suggests that simple models, consistent with thermodynamics, similar to those postulated to explain corrosion in other materials, can effectively explain all of the data. For example, data from a host of techniques, including calorimetry, microbalance, X-ray photoelectron spectroscopy, secondary ion mass spectrometry and Rutherford back-scattering, indicate that on LiH the corrosion layer formed upon water exposure grows at a nearly constant rate and consists of two layers, a very thin layer of Li2O sandwiched between LiOH and the original LiH ('tri-layer' model). These form during the reaction of water at two subsurface interfaces: LiH/Li2O and Li2O/LiOH. These reactions result in the release of hydrogen (2LiH+H2O-->Li2O+2H(2)), and the growth of the LiOH layer (Li2O + H2O-->2LiOH). Alternative models found in the literature, which include features such as the existence of LiOH/LiH interfaces, are shown to be inconsistent with thermodynamics. It is also shown that confusion regarding the mechanism of decomposition of LiOH upon heating results from a failure to account for the fact that the decomposition process of LiOH 'on top of' LiH is fundamentally different from that of pure LiOH. In fact, thermodynamics clearly predicts that even at room temperature the tri-layer model is not stable, and should eventually decompose to two layers, Li2O on top of LiH. Thus, the layer of LiOH formed on top of LiH, produced for example for surface studies, is in fact composed of both LiOH and Li2O on top of LiH (i.e. the 'tri-layer' structure) and this structure will gradually decompose, releasing hydrogen, even at room temperature. This process will lead eventually to the simpler structure Li2O/LiH. In contrast, pure LiOH is stable except at temperatures above 400 K even in the driest environments. Finally, recent data show a 'barrier layer' will form during exposure of LiH to a gas containing both CO2 and water. Once fully formed (similar to 1 mu m thickness), this barrier effectively prevents the attack of LiH by water. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Phillips, J (reprint author), Los Alamos Natl Lab, ESA-MEE MS C930, Los Alamos, NM 87545 USA. EM jphillips@lanl.gov RI Phillips, Jonathan/D-3760-2011 NR 57 TC 10 Z9 10 U1 1 U2 12 PU MANEY PUBLISHING PI LEEDS PA HUDSON RD, LEEDS LS9 7DL, ENGLAND SN 0950-6608 J9 INT MATER REV JI Int. Mater. Rev. PD OCT PY 2005 VL 50 IS 5 BP 265 EP 286 DI 10.1179/174328005X41122 PG 22 WC Materials Science, Multidisciplinary SC Materials Science GA 977UX UT WOS:000232830100002 ER PT J AU Klueh, RL AF Klueh, RL TI Elevated temperature ferritic and martensitic steels and their application to future nuclear reactors SO INTERNATIONAL MATERIALS REVIEWS LA English DT Review DE ferritic/martensitic steels; composition effects; elevated temperature strength; creep ID CHROMIUM-TUNGSTEN STEELS; RESEARCH-AND-DEVELOPMENT; COAL POWER-PLANTS; REDUCED-ACTIVATION; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; HEAT-TREATMENT; MICROSTRUCTURAL STABILITY; FERRITIC/MARTENSITIC STEEL; CREEP DEFORMATION AB In the 1970s, high chromium (9-12%Cr) ferritic/martensitic steels became candidates for elevated temperature applications in the core of fast reactors. Steels developed for conventional power plants, such as Sandvik HT9, a nominally Fe-12Cr-1Mo-0.5W-0.5Ni-0.25V-0.2C steel (composition in wt-%), were considered in the USA, Europe and Japan. Now, a new generation of fission reactors is in the planning stage, and ferritic, bainitic and martensitic steels are again candidates for in-core and out-of-core applications. Since the 1970s, advances have been made in developing steels with 2-12%Cr for conventional power plants that are significant improvements over steels originally considered. The present study will review the development of the new steels to illustrate the advantages they offer for the new reactor concepts. Elevated temperature mechanical properties will be emphasised. Effects of alloying additions on long-time thermal exposure with and without stress (creep) will be examined. Information on neutron radiation effects will be discussed as it applies to ferritic and martensitic steels. C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Klueh, RL (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. EM kluehrl@ornl.gov NR 137 TC 162 Z9 164 U1 10 U2 54 PU MANEY PUBLISHING PI LEEDS PA STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND SN 0950-6608 EI 1743-2804 J9 INT MATER REV JI Int. Mater. Rev. PD OCT PY 2005 VL 50 IS 5 BP 287 EP 310 DI 10.1179/174328005X41140 PG 24 WC Materials Science, Multidisciplinary SC Materials Science GA 977UX UT WOS:000232830100003 ER PT J AU Xi, YG Gessmann, T Xi, JQ Kim, JK Shah, JM Schubert, EF Fischer, AJ Crawford, MH Bogart, KHA Allerman, AA AF Xi, YG Gessmann, T Xi, JQ Kim, JK Shah, JM Schubert, EF Fischer, AJ Crawford, MH Bogart, KHA Allerman, AA TI Junction temperature in ultraviolet light-emitting diodes SO JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS LA English DT Article DE junction temperature; UV LEDs; AlGaN; temperature coefficient; diode-forward voltage; and thermal resistance ID LASER DIODE; NITRIDE AB The junction temperature and thermal resistance of AlGaN and GaInN ultraviolet (UV) light-emitting diodes (LEDs) emitting at 295 and 375 nm, respectively, are measured using the temperature coefficient of diode-forward voltage. An analysis of the experimental method reveals that the diode-forward voltage has a high accuracy of +/- 3 degrees C. A comprehensive theoretical model for the dependence of diode-forward voltage (V(f)) on junction temperature (T(j)) is developed taking into account the temperature dependence of the energy gap and the temperature coefficient of diode resistance. The difference between the junction voltage temperature coefficient (dV(j)/dT) and the forward voltage temperature coefficient (dV(f)/dT) is shown to be caused by diode series resistance. The data indicate that the n-type neutral regions are the dominant resistive element in deep-UV devices. A linear relationship between junction temperature and current is found. Junction temperature is also measured by the emission-peak-shift method. The high-energy slope of the spectrum is explored in the measurement of carrier temperature. C1 Rensselaer Polytech Inst, Future Chips Constellat, Troy, NY 12180 USA. Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA. Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA. Sandia Natl Labs, Cpd Semicond Res Lab, Albuquerque, NM 87185 USA. RP Schubert, EF (reprint author), Rensselaer Polytech Inst, Future Chips Constellat, Troy, NY 12180 USA. EM efschubert@rpi.edu NR 18 TC 39 Z9 41 U1 2 U2 18 PU JAPAN SOC APPLIED PHYSICS PI TOKYO PA KUDAN-KITA BUILDING 5TH FLOOR, 1-12-3 KUDAN-KITA, CHIYODA-KU, TOKYO, 102-0073, JAPAN SN 0021-4922 J9 JPN J APPL PHYS 1 JI Jpn. J. Appl. Phys. Part 1 - Regul. Pap. Brief Commun. Rev. Pap. PD OCT PY 2005 VL 44 IS 10 BP 7260 EP 7266 DI 10.1143/JJAP.44.7260 PG 7 WC Physics, Applied SC Physics GA 976NC UT WOS:000232739300012 ER PT J AU Younger, S AF Younger, S TI Violence and revenge in egalitarian societies SO JASSS-THE JOURNAL OF ARTIFICIAL SOCIETIES AND SOCIAL SIMULATION LA English DT Article DE violence; revenge; egalitarian culture; homicide; population density; tolerance; food supply ID EVOLUTION AB Discrete agent simulation was used to investigate the role of violence and revenge in model egalitarian societies. A population of 100 agents inhabited a landscape of 20x20 squares containing five sources of food. Agents moved about the landscape in search of food, shared, stole, mated, produced offspring, and ultimately died of old age. Violence and revenge reduced the survival probability of the population and, for surviving populations, replaced hunger as the second leading cause of death after old age. Excluding large segments of the population from violence and revenge significantly improved survival rates. Tolerance to transgressions reduced the number of agents killed in revenge attacks. Higher population density increased the number of revenge deaths but also increased the survival rate of the total population. Decreasing the food supply for a fixed initial population resulted in more deaths due to violence and revenge. Flight from known aggressors enhanced the survival of the total population, at the expense of social cohesion. When killing had a positive social value the survival rate of the total population increased as the number of revenge killings decreased. These results are discussed in the context of ethnographic observations of a number of egalitarian societies. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Younger, S (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87544 USA. EM smyounger@lanl.gov NR 35 TC 0 Z9 0 U1 0 U2 1 PU J A S S S PI GUILDFORD PA UNIV SURREY, DEPT SOCIOLOGY, GUILDFORD GU2 7XH, SURREY, ENGLAND SN 1460-7425 J9 JASSS-J ARTIF SOC S JI JASSS PD OCT PY 2005 VL 8 IS 4 PG 13 WC Social Sciences, Interdisciplinary SC Social Sciences - Other Topics GA 010SJ UT WOS:000235217900002 ER PT J AU Sugama, T AF Sugama, T TI Cerium acetate-modified aminopropylsilane triol: A precursor of corrosion-preventing coating for aluminum-finned condensers SO JCT RESEARCH LA English DT Article DE corrosion testing; ESCA; EXP; Auger; SIMS; FTIR; ATR; corrosion; corrosion protection; organosilane; waterborne; water-based; aluminum; iron; cast iron; steel ID XPS; PROTECTION; INTERFACES; SURFACES; ALLOYS AB A poly-acetamide-acetoxyl methyl-propylsiloxane (PAAMPS) polymer containing a cerium (Ce) oxide derivative was synthesized through three spontaneous reactions: condensation, amidation, and acetoxylation. The PAAMPS synthesizing took place between the Ce acetate dopant and aminopropylsilane triol (APST) as the film-forming precursor aqueous solution at 150 degrees C. PAAMPS was evaluated for use as a corrosion-preventing coating for air-cooled condensers consisting of two metal components: aluminum fins and carbon steel tube. The key factors to ensuring the maximum performance of the PAAMPS/Ce oxide coating system in mitigating the corrosion of both aluminum and steel included (1) minimizing the content of non-reacted water-soluble APST and Ce acetate remaining in the coating, (2) lowering the susceptibility of the coating's surface to moisture, (3) precipitating a passive Ce3+ oxide (Ce2O3) film insensitive to Cl dissolution over the metal's surfaces, and (4) possessing excellent adhesion to the metal's surfaces. The combination of these factors considerably decreased the rate of the cathodic oxygen reduction reaction at the corrosion site of the metals. In fact, the corrosion rate, measured in milli-inches per year (mpy), of bare steel was reduced more than one order of magnitude by applying this coating. Correspondingly, the coating extended the useful lifetime of steel exposed in a salt-fog chamber at 35 degrees C from only similar to 10 hr to similar to 768 hr. Furthermore, this coating system far better protected an aluminum substrate from the corrosion than it did one of steel. Even a very thin nanoscale coating film deposited on the aluminum's surfaces reduced the corrosion rate, (mpy), by nearly two orders of magnitude over that of the bare aluminum. Also, the salt-spray resistance of aluminum panels covered by this nanoscale film was strikingly,extended to more than 1440 hr, compared with similar to 40 hr for bare aluminum. C1 Brookhaven Natl Lab, Energy Resources Div, Energy Sci & Technol Dept, Upton, NY 11973 USA. RP Sugama, T (reprint author), Brookhaven Natl Lab, Energy Resources Div, Energy Sci & Technol Dept, Upton, NY 11973 USA. NR 24 TC 14 Z9 14 U1 0 U2 7 PU FEDERATION SOC COATINGS TECHNOLOGY PI BLUE BELL PA 492 NORRISTOWN ROAD, BLUE BELL, PA 19422-2350 USA SN 1547-0091 J9 JCT RES JI JCT Res. PD OCT PY 2005 VL 2 IS 8 BP 649 EP 659 DI 10.1007/BF02774594 PG 11 WC Chemistry, Applied; Materials Science, Coatings & Films SC Chemistry; Materials Science GA 977DG UT WOS:000232782000008 ER PT J AU Gateshki, M Petkov, V Pradhan, SK Vogt, T AF Gateshki, M Petkov, V Pradhan, SK Vogt, T TI Structure of nanocrystalline MgFe(2)O(4) from X-ray diffraction, Rietveld and atomic pair distribution function analysis SO JOURNAL OF APPLIED CRYSTALLOGRAPHY LA English DT Article ID DEPENDENT SUPERPARAMAGNETIC PROPERTIES; MAGNESIUM FERRITE; MAGNESIOFERRITE MGFE2O4; TEMPERATURE-DEPENDENCE; CATION DISTRIBUTION; POWDER DIFFRACTION; DISORDER; NANOPARTICLES; REFINEMENT; SCATTERING AB The three-dimensional structure of nanocrystalline magnesium ferrite, MgFe(2)O(4), prepared by ball milling, has been determined using synchrotron radiation powder diffraction and employing both Rietveld and atomic pair distribution function (PDF) analysis. The nanocrystalline ferrite exhibits a very limited structural coherence length and a high degree of structural disorder. Nevertheless, the nanoferrite possesses a very well defined local atomic ordering that may be described in terms of a spinel-type structure with Mg(2+) and Fe(3+) ions almost randomly distributed over its tetrahedral and octahedral sites. The new structural information helps explain the material's unusual magnetic properties. C1 Cent Michigan Univ, Dept Phys, Mt Pleasant, MI 48859 USA. Univ Burdwan, Dept Phys, Burdwan 713104, W Bengal, India. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ S Carolina, Nanoctr, Columbia, SC 29208 USA. Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA. RP Gateshki, M (reprint author), Cent Michigan Univ, Dept Phys, Mt Pleasant, MI 48859 USA. EM gates1m@cmich.edu; petkov@phy.cmich.edu RI Vogt, Thomas /A-1562-2011; OI Vogt, Thomas /0000-0002-4731-2787; Pradhan, Swapan Kumar/0000-0002-0774-872X NR 46 TC 38 Z9 38 U1 2 U2 18 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0021-8898 J9 J APPL CRYSTALLOGR JI J. Appl. Crystallogr. PD OCT PY 2005 VL 38 BP 772 EP 779 DI 10.1107/S0021889805024477 PN 5 PG 8 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA 964RI UT WOS:000231897800011 ER PT J AU Lipp, L Gottesfeld, S Chlistunoff, J AF Lipp, L Gottesfeld, S Chlistunoff, J TI Peroxide formation in a zero-gap chlor-alkali cell with an oxygen-depolarized cathode SO JOURNAL OF APPLIED ELECTROCHEMISTRY LA English DT Article DE chlor-alkali; gas diffusion electrode; membrane technology; oxygen-depolarized cathode; peroxide; sodium hydroxide ID ALKALINE-SOLUTION; ELECTROCHEMICAL REDUCTION; CARBON ELECTRODES; ELECTROLYSIS; CHLORATE; CHLORIDE; PLATINUM; KINETICS; CATALYST; ELECTROCATALYSIS AB The effects of various factors on the undesired generation of hydrogen peroxide in a zero-gap oxygen-depolarized chlor-alkali cell employing carbon-supported platinum catalysts were studied. The rate of peroxide generation was found to decrease with platinum loading and increase with current density. The quantity of peroxide generated also increased with electrolysis time, and reached a steady state value after a few 100 h of cell operation at 10 kA m(-2). The steady-state peroxide to hydroxide molar ratio was found to increase with brine concentration. This phenomenon is believed to originate from a decrease of water activity at the reaction site that accompanies the brine concentration increase. No correlation between chloride crossover and the concentration of peroxide generated was detected. It is postulated that carbon particles are predominantly responsible for the partial oxygen reduction and that their contribution increases with electrolysis time as a result of processes that render the carbon surface more hydrophilic. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. FuelCell Energy Inc, Danbury, CT 06813 USA. MTI Microfuel Cells, Albany, NY 12205 USA. RP Chlistunoff, J (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM jerzy@lanl.gov NR 47 TC 16 Z9 16 U1 4 U2 18 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0021-891X J9 J APPL ELECTROCHEM JI J. Appl. Electrochem. PD OCT PY 2005 VL 35 IS 10 BP 1015 EP 1024 DI 10.1007/s10800-005-7340-7 PG 10 WC Electrochemistry SC Electrochemistry GA 960NT UT WOS:000231601100009 ER PT J AU Song, J Liao, K Coulter, RL Lesht, BM AF Song, J Liao, K Coulter, RL Lesht, BM TI Climatology of the low-level jet at the southern Great Plains atmospheric Boundary Layer Experiments site SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID WIND PROFILER NETWORK; CENTRAL UNITED-STATES; MIGRATING BIRDS; SLOPING TERRAIN; PACIFIC; OSCILLATION; CASES-99; KANSAS AB A unique dataset obtained with combinations of minisodars and 915-MHz wind profilers at the Atmospheric Boundary Layer Experiments (ABLE) facility in Kansas was used to examine the detailed characteristics of the nocturnal low-level jet (LLJ). In contrast to instruments used in earlier studies, the ABLE instruments provide hourly, high-resolution vertical profiles of wind velocity from just above the surface to approximately 2 km above ground level (AGL). Furthermore, the 6-yr span of the dataset allowed the examination of interannual variability in jet properties with improved statistical reliability. It was found that LLJs occurred during 63% of the nighttime periods sampled. Although most of the observed jets were southerly, a substantial fraction (28%) was northerly. Wind maxima occurred most frequently at 200-400 m AGE, though some jets were found as low as 50 m, and the strongest jets tended to occur above 300 m. Comparison of LLJ heights at three locations within the ABLE domain and at one location outside the domain suggests that the jet is equipotential rather than terrain following. The occurrence of southerly LLJ varied annually in a way that suggests a connection between the tendency for jet formation and the large-scale circulation patterns associated with El Nino and La Nina, as well as with the Pacific decadal oscillation. Frequent and strong southerly jets that transport moisture downstream do not necessarily lead to more precipitation locally, however. C1 No Illinois Univ, Dept Geog, De Kalb, IL 60115 USA. Argonne Natl Lab, Illinois Environm Res Div, Argonne, IL 60439 USA. Univ S Carolina, Dept Geog, Columbia, SC 29208 USA. RP Song, J (reprint author), No Illinois Univ, Dept Geog, De Kalb, IL 60115 USA. EM jsong@niu.edu OI Lesht, Barry/0000-0003-0801-4290 NR 33 TC 79 Z9 81 U1 1 U2 11 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0894-8763 J9 J APPL METEOROL JI J. Appl. Meteorol. PD OCT PY 2005 VL 44 IS 10 BP 1593 EP 1606 DI 10.1175/JAM2294.1 PG 14 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 980QY UT WOS:000233034500007 ER PT J AU Braun, A Ilavsky, J Seifert, S Jemian, PR AF Braun, A Ilavsky, J Seifert, S Jemian, PR TI Deformation of diesel soot aggregates as a function of pellet pressure: A study with ultra-small-angle x-ray scattering SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ELECTRON-MICROSCOPY; ELASTIC BEHAVIOR; NANOPARTICLES; PARTICLES; AEROSOLS; MICROSTRUCTURE; COMBUSTION; FLAME AB Diesel soot powder generated under idle and load engine conditions was pressed into pellets at pressures ranging up to approximately 8.5 GPa. Soot powder was also immersed in acetone in order to obtain soot aggregates without agglomeration. Small-angle x-ray scattering was carried out on the powder, the pellets, and on the acetone-immersed soot. Powder and pellets show characteristic aggregate structure at small scattering vectors. Scattering curves of the pellets show a shift of the aggregate size-related scattering feature towards larger scattering vectors for increasing pressure. For the highest pressures, this aggregate structure vanished, while the suspected primary particle scattering became visible as the asymptote of the aggregate scattering structure. Soot was immersed and ultrasonicated in acetone to prevent agglomeration of aggregates, which naturally occurs in powders. This can be considered as the simulation of asymptotic behavior for vanishing pressure. Aggregate size of powder was about 290 nm for the idle soot and 240 nm for the load soot. Primary particle sizes were 14.3 and 10.2 nm, respectively. The idle soot showed a higher compressibility (0.9 GPa/nm) than the load soot (12.0 GPa/nm). Pressing the soot into pellets eliminates scattering structures from aggregation of primary particles and provides a good route to reveal the otherwise inaccessible primary particle scattering. In addition, studying the aggregate structure as a function of pellet pressure allows us to derive compacticity data of the soot. (c) 2005 American Institute of Physics. C1 Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40506 USA. Consortium Fossil Fuel Sci, Lexington, KY 40506 USA. Argonne Natl Lab, Expt Facil Div, Argonne, IL 60439 USA. Argonne Natl Lab, Chem & Mat Technol Div, Argonne, IL 60439 USA. Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA. RP Braun, A (reprint author), EMPA Swiss Fed Labs Mat Testing & Res, Uberlandstr 129, CH-8600 Dubendorf, Switzerland. EM artur.braun@empa.ch RI Ilavsky, Jan/D-4521-2013; USAXS, APS/D-4198-2013; BRAUN, Artur/A-1154-2009 OI Ilavsky, Jan/0000-0003-1982-8900; BRAUN, Artur/0000-0002-6992-7774 NR 31 TC 4 Z9 4 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 1 PY 2005 VL 98 IS 7 AR 073513 DI 10.1063/1.2071456 PG 5 WC Physics, Applied SC Physics GA 973YJ UT WOS:000232558200019 ER PT J AU Chuang, FC Ciobanu, CV Wang, CZ Ho, KM AF Chuang, FC Ciobanu, CV Wang, CZ Ho, KM TI Model reconstructions for the Si(337) orientation SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SEMICONDUCTOR SURFACES; GENETIC ALGORITHM; SILICON SURFACES; SI(113) SURFACES; ATOMIC-STRUCTURE; SI(5512); STABILITY; HRTEM; STEPS AB Although unstable, the Si(337) orientation has been known to appear in diverse experimental situations such as the nanoscale faceting of Si(112), or in the case of miscutting a Si(113) surface. Various models for Si(337) have been proposed over time, which motivates a comprehensive study of the structure of this orientation. Such a study is undertaken in this article, where we report the results of a genetic algorithm optimization of the Si(337)-(2x1) surface. The algorithm is coupled with a highly optimized empirical potential for silicon, which is used as an efficient way to build a set of possible Si(337) models; these structures are subsequently relaxed at the level of ab initio density-functional methods. Using this procedure, we retrieve the (337) reconstructions proposed in previous works, as well as a number of different ones. (c) 2005 American Institute of Physics. C1 Colorado Sch Mines, Div Engn, Golden, CO 80401 USA. Iowa State Univ, US Dept Energy, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys, Ames, IA 50011 USA. RP Colorado Sch Mines, Div Engn, Golden, CO 80401 USA. EM cciobanu@mines.edu RI Ciobanu, Cristian/B-3580-2009; Chuang, FengChuan/H-7166-2013 OI Chuang, FengChuan/0000-0003-0351-4253 NR 27 TC 13 Z9 13 U1 0 U2 9 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 1 PY 2005 VL 98 IS 7 AR 073507 DI 10.1063/1.2064309 PG 6 WC Physics, Applied SC Physics GA 973YJ UT WOS:000232558200013 ER PT J AU Jacobsohn, LG Cooke, DW Bennett, BL Muenchausen, RE Nastasi, M AF Jacobsohn, LG Cooke, DW Bennett, BL Muenchausen, RE Nastasi, M TI The role of the chemical nature of implanted species on quenching and recovery of photoluminescence in ion-irradiated porous silicon SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SI NANOCRYSTALS; HYDROGEN; SPECTRA AB The effects of ion irradiation on porous Si (po-Si) photoluminescence (PL) have been investigated. Specimens were progressively irradiated with H+ and He+ ions followed by PL measurements. After the final irradiation, which resulted in total PL quenching, PL recovery was monitored for more than 200 days. The behavior of both PL quenching and recovery was correlated to the amount of retained irradiation-induced damage, determined by channeling spectrometry measurements, and to the chemical nature of the implanted species. Quenching was attributed to the generation of defects that create nonradiative states within the gap, while recovery was attributed to the passivation of these defects by atmospheric exposure. H+ irradiation is approximately five times more efficient in quenching PL and leads to approximately four times lower recovery rate than He+ irradiation. This behavior is attributed to the formation of stable H-defect complexes. (c) 2005 American Institute of Physics. C1 Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. RP Jacobsohn, LG (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, MST-8 G755, Los Alamos, NM 87545 USA. EM lgjacob@lanl.gov OI Jacobsohn, Luiz/0000-0001-8991-3903 NR 18 TC 3 Z9 3 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 1 PY 2005 VL 98 IS 7 AR 076108 DI 10.1063/1.2081118 PG 3 WC Physics, Applied SC Physics GA 973YJ UT WOS:000232558200102 ER PT J AU Kang, K Hu, YF Lewis, LH Li, Q Moodenbaugh, AR Choi, YS AF Kang, K Hu, YF Lewis, LH Li, Q Moodenbaugh, AR Choi, YS TI Large magnetoresistance in rapidly solidified bismuth SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID BI THIN-FILMS; TRANSPORT-PROPERTIES; POLYCRYSTALLINE BISMUTH; MAGNETIC-FIELD; TEMPERATURE AB Rapidly solidified, annealed ribbons (20 mu m thick) of elemental Bi show a room-temperature ordinary magnetoresistive effect of 250% at 5 T with the field applied perpendicular to the ribbon surface. The effect increases to 10000% at 5 K and 5 T. These values are intermediate to those obtained for single-crystal Bi films and sputtered or evaporated polycrystalline Bi films of comparable thicknesses. The large magnetoresistance of the ribbons is attributed to a very good crystallinity and partial c-axis texture of the ribbon achieved during solidification. Rapid solidification by melt spinning is a promising technique for synthesis of Bi with potential application in magnetoelectric devices. (c) 2005 American Institute of Physics. C1 Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA. Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RP Kang, K (reprint author), Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA. EM lhlewis@bnl.gov NR 17 TC 3 Z9 3 U1 3 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 1 PY 2005 VL 98 IS 7 AR 073704 DI 10.1063/1.2067706 PG 4 WC Physics, Applied SC Physics GA 973YJ UT WOS:000232558200042 ER PT J AU Lemke, RW Knudson, MD Bliss, DE Cochrane, K Davis, J-P Giunta, AA Harjes, HC Slutz, SA AF Lemke, RW Knudson, MD Bliss, DE Cochrane, K Davis, J-P Giunta, AA Harjes, HC Slutz, SA TI Magnetically accelerated, ultrahigh velocity flyer plates for shock wave experiments SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ALUMINUM; COMPRESSION AB The intense magnetic field produced by the 20 MA Z accelerator is used as an impulsive pressure source to accelerate metal flyer plates to high velocity for the purpose of performing plate impact, shock wave experiments. This capability has been significantly enhanced by the recently developed pulse shaping capability of Z, which enables tailoring the rise time to peak current for a specific material and drive pressure to avoid shock formation within the flyer plate during acceleration. Consequently, full advantage can be taken of the available current to achieve the maximum possible magnetic drive pressure. In this way, peak magnetic drive pressures up to 490 GPa have been produced, which shocklessly accelerated 850 mu m aluminum (6061-T6) flyer plates to peak velocities of 34 km/s. We discuss magnetohydrodynamic (MHD) simulations that are used to optimize the magnetic pressure for a given flyer load and to determine the shape of the current rise time that precludes shock formation within the flyer during acceleration to peak velocity. In addition, we present results pertaining to plate impact, shock wave experiments in which the aluminum flyer plates were magnetically accelerated across a vacuum gap and impacted z-cut, alpha-quartz targets. Accurate measurements of resulting quartz shock velocities are presented and analyzed through high-fidelity MHD simulations enhanced using optimization techniques. Results show that a fraction of the flyer remains at solid density at impact, that the fraction of material at solid density decreases with increasing magnetic pressure, and that the observed abrupt decrease in the quartz shock velocity is well correlated with the melt transition in the aluminum flyer. (c) 2005 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM rwlemke@sandia.gov NR 25 TC 53 Z9 60 U1 1 U2 14 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 1 PY 2005 VL 98 IS 7 AR 073530 DI 10.1063/1.2084316 PG 9 WC Physics, Applied SC Physics GA 973YJ UT WOS:000232558200036 ER PT J AU Yuan, ZY Li, LH Han, XG Huang, JH Jiang, GM Wan, SQ Zhang, WH Chen, QS AF Yuan, ZY Li, LH Han, XG Huang, JH Jiang, GM Wan, SQ Zhang, WH Chen, QS TI Nitrogen resorption from senescing leaves in 28 plant species in a semi-arid region of northern China SO JOURNAL OF ARID ENVIRONMENTS LA English DT Article DE plant leaf nitrogen; life-form; nitrogen resorption efficiency and proficiency; nitrogen use efficiency; semi-arid ecosystems; China ID LEAF LIFE-SPAN; NUTRIENT RESORPTION; MINERAL-NUTRITION; USE EFFICIENCY; WILD PLANTS; CONSERVATION; DECOMPOSITION; PROFICIENCY; ARGENTINA; EVERGREEN AB Nitrogen resorption efficiency (NRE) and proficiency of 28 plant species belonging to five different life-forms were studied in a semi-arid region of northern China. NRE in these species ranged from 29.8% to 76.1% and averaged about 48.0%, depending upon the species and the life-form. The pattern of NRE in different life-forms followed the order of herbs > shrubs > trees > graminoids > N fixers. Nitrogen resorption proficiency (NRP) ranged from 8.0 to 20.6 mg g(-1), the average value of which was lowest in graminoids and highest in N fixing species. Leaf-level nitrogen use efficiency (NUE) ranged from 48.5g g(-1) to 125.8g g(-1) with the average NUE being lowest in the N fixing species and highest in the graminoids. Our findings show that most of the 28 species examined in this study can be categorized as low N-proficiency plants. The lower nitrogen concentration in living tissues and the greater nitrogen resorption during senescence could have contributed jointly to the leaf-level NUE of the species. It was noted that NRP was negatively correlated to NRE, while a positive correlation between the leaf-level NUE and NRE was found for all the species. We had also found a significant positive relation between NRE and the N concentration in green leaves for all the species pulled together, suggesting that green leaf N content might have partially controlled the leaf N resorption. (c) 2005 Published by Elsevier Ltd. C1 Chinese Acad Sci, Inst Bot, Lab Quantitat Vegetat Ecol, Beijing 100093, Peoples R China. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Flinders Univ S Australia, Sch Biol Sci, Adelaide, SA, Australia. RP Li, LH (reprint author), Chinese Acad Sci, Inst Bot, Lab Quantitat Vegetat Ecol, Beijing 100093, Peoples R China. EM zyyuan@ibcas.ac.cn; xghan@ibcas.ac.cn RI Zhang, Wen-Hao/B-5805-2009; Han, Xingguo/B-3980-2012; Wan, Shiqiang/B-5799-2009; Han, Xingguo/K-7552-2016 OI Zhang, Wen-Hao/0000-0003-2708-2221; Han, Xingguo/0000-0002-1836-975X NR 28 TC 46 Z9 67 U1 2 U2 32 PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0140-1963 J9 J ARID ENVIRON JI J. Arid. Environ. PD OCT PY 2005 VL 63 IS 1 BP 191 EP 202 DI 10.1016/j.jaridenv.2005.01.023 PG 12 WC Ecology; Environmental Sciences SC Environmental Sciences & Ecology GA 959GJ UT WOS:000231505900002 ER PT J AU Reda, I Hickey, J Long, C Myers, D Stoffel, T Wilcox, S Michalsky, JJ Dutton, EG Nelson, D AF Reda, I Hickey, J Long, C Myers, D Stoffel, T Wilcox, S Michalsky, JJ Dutton, EG Nelson, D TI Using a blackbody to calculate net longwave responsivity of shortwave solar pyranometers to correct for their thermal offset error during outdoor calibration using the component sum method SO JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY LA English DT Article ID RADIATION; SURFACE AB Thermopile pyranometers' thermal offset has been recognized since the pyranometer's inception. This offset is often overlooked or ignored because its magnitude is small compared to the overall solar signal at higher irradiance. With the demand of smaller uncertainty in measuring solar radiation, recent publications have described a renewed interest in this offset, its magnitude, and its effect on solar measurement networks for atmospheric science and solar energy applications. Recently, it was suggested that the magnitude of the pyranometer thermal offset is the same if the pyranometer is shaded or unshaded. Therefore, calibrating a pyranometer using a method known as the shade/unshade method would result in accurate responsivity calculations because the thermal offset error is canceled. When using the component sum method for the pyranometer calibration, the thermal offset error, which is typically negative when the sky is cloudless, does not cancel, resulting in an underestimated shortwave responsivity. Most operational pyranometers that are in use for solar radiation measuring networks are calibrated using the component sum method since it is possible to calibrate many pyranometers simultaneously. From this arises the importance of correcting the component sum method results to account for the thermal offset error. In this article a method of using a blackbody system to calculate the net longwave respogsivity of pyranometers, which is largely responsible for the offset error, is described. This longwave responsivity is then used to correct the pyranometer's shortwave responsivity during the component sum method calibrations and thereby substantially reduces the effect of the offset error on the final pyranometer responsivity. Practical procedures for performing this calibration procedure along with its limitations and remaining uncertainties are given. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Eppley Lab, Newport, RI USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NOAA, Boulder, CO USA. RP Reda, I (reprint author), Natl Renewable Energy Lab, 1617 Cold Blvd, Golden, CO 80401 USA. EM ibrahim_reda@nrel.gov NR 11 TC 10 Z9 10 U1 2 U2 6 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 OCT PY 2005 VL 22 IS 10 BP 1531 EP 1540 DI 10.1175/JTECH1782.1 PG 10 WC Engineering, Ocean; Meteorology & Atmospheric Sciences SC Engineering; Meteorology & Atmospheric Sciences GA 978YH UT WOS:000232908500008 ER PT J AU Yu, EW Aires, JR McDermott, G Nikaido, H AF Yu, EW Aires, JR McDermott, G Nikaido, H TI A periplasmic drug-binding site of the AcrB multidrug efflux pump: a crystallographic and site-directed mutagenesis study SO JOURNAL OF BACTERIOLOGY LA English DT Article ID GRAM-NEGATIVE BACTERIA; ESCHERICHIA-COLI; PSEUDOMONAS-AERUGINOSA; SUBSTRATE-SPECIFICITY; CRYSTAL-STRUCTURE; STRUCTURAL MECHANISMS; MEXAB-OPRM; TRANSPORTER; PROTEIN; RESISTANCE AB The Escherichia coli AcrB multidrug efflux pump is a membrane protein that recognizes many structurally dissimilar toxic compounds. We previously reported the X-ray structures of four AcrB-ligand complexes in which the ligands were bound to the wall of the extremely large central cavity in the transmembrane domain of the pump. Genetic studies, however, suggested that discrimination between the substrates occurs mainly in the periplasmic domain rather than the transmembrane domain of the pump. We here describe the crystal structures of the AcrB mutant in which Asn109 was replaced by Ala, with five structurally diverse ligands, ethidium, rhodamine 6G, ciprofloxacin, nafcillin, and Phe-Arg-beta-naphthylamide. The ligands bind not only to the wall of central cavity but also to a new periplasmic site within the deep external depression formed by the C-terminal periplasmic loop. This depression also includes residues identified earlier as being important in the specificity. We show here that conversion into alanine of the Phe664, Phe666, or Glu673 residue in the periplasmic binding site produced significant decreases in the MIC of most agents in the N109A background. Furthermore, decreased MICs were also observed when these residues were mutated in the wild-type AcrB background, although the effects were more modest. The MIC data were also confirmed by assays of ethidium influx rates in intact cells, and our results suggest that the periplasmic binding site plays a role in the physiological process of drug efflux. C1 Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley Ctr Struct Biol, Phys Biosci Div, Berkeley, CA 94720 USA. RP Nikaido, H (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, 16 Barker Hall, Berkeley, CA 94720 USA. EM nhiroshi@berkeley.edu FU NIAID NIH HHS [AI-09644, R01 AI009644, R37 AI009644]; NIGMS NIH HHS [GM074027, R01 GM074027] NR 51 TC 124 Z9 131 U1 3 U2 7 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 OCT PY 2005 VL 187 IS 19 BP 6804 EP 6815 DI 10.1128/JB.187.19.6804-6815.2005 PG 12 WC Microbiology SC Microbiology GA 968FM UT WOS:000232147300023 PM 16166543 ER PT J AU Judd, EM Comolli, LR Chen, JC Downing, KH Moerner, WE McAdams, HH AF Judd, EM Comolli, LR Chen, JC Downing, KH Moerner, WE McAdams, HH TI Distinct constrictive processes, separated in time and space, divide Caulobacter inner and outer membranes SO JOURNAL OF BACTERIOLOGY LA English DT Article ID CELL-CYCLE PROGRESSION; GREEN FLUORESCENT PROTEIN; ESCHERICHIA-COLI; ELECTRON-MICROSCOPE; SEPTUM FORMATION; CRESCENTUS; DIVISION; FTSZ; RING; LOCALIZATION AB Cryoelectron microscope tomography (cryoEM) and a fluorescence loss in photobleaching (FLIP) assay were used to characterize progression of the terminal stages of Caulobacter crescentus cell division. Tomographic cryoEM images of the cell division site show separate constrictive processes closing first the inner membrane (IM) and then the outer membrane (OM) in a manner distinctly different from that of septum-forming bacteria. FLIP experiments had previously shown cytoplasmic compartmentalization (when cytoplasmic proteins can no longer diffuse between the two nascent progeny cell compartments) occurring 18 min before daughter cell separation in a 135-min cell cycle so the two constrictive processes are separated in both time and space. In the very latest stages of both IM and OM constriction, short membrane tether structures are observed. The smallest observed prefission tethers were 60 nm in diameter for both the inner and outer membranes. Here, we also used FLIP experiments to show that both membrane-bound and periplasmic fluorescent proteins diffuse freely through the FtsZ ring during most of the constriction procession. C1 Stanford Univ, Sch Med, Dept Dev Biol, Beckman Ctr B300, Stanford, CA 94305 USA. Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA. Stanford Univ, Dept Chem, Stanford, CA 94305 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Stanford Univ, Sch Med, Dept Dev Biol, Beckman Ctr B300, 279 Campus Dr, Stanford, CA 94305 USA. EM hmcadams@stanford.edu RI Moerner, William/C-3260-2008 OI Moerner, William/0000-0002-2830-209X FU NHGRI NIH HHS [P20 HG003638, 1 P20 HG003638-01]; NIGMS NIH HHS [F32 GM067472]; PHS HHS [F32 G067472] NR 35 TC 42 Z9 42 U1 0 U2 3 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0021-9193 EI 1098-5530 J9 J BACTERIOL JI J. Bacteriol. PD OCT PY 2005 VL 187 IS 20 BP 6874 EP 6882 DI 10.1128/JB.187.20.6874-6882.2005 PG 9 WC Microbiology SC Microbiology GA 973FY UT WOS:000232509500003 PM 16199556 ER PT J AU Beliaev, AS Klingeman, DM Klappenbach, JA Wu, L Romine, MF Tiedje, JA Nealson, KH Fredrickson, JK Zhou, J AF Beliaev, AS Klingeman, DM Klappenbach, JA Wu, L Romine, MF Tiedje, JA Nealson, KH Fredrickson, JK Zhou, J TI Global transcriptome analysis of Shewanella oneidensis MR-1 exposed to different terminal electron acceptors SO JOURNAL OF BACTERIOLOGY LA English DT Article ID ESCHERICHIA-COLI; PSEUDOMONAS-AERUGINOSA; ANAEROBIC RESPIRATION; SIGNAL-TRANSDUCTION; GENOME SEQUENCE; REDUCTION; RESISTANCE; IRON; GENE; IDENTIFICATION AB To gain insight into the complex structure of the energy-generating networks in the dissimilatory metal reducer Shewanella oneidensis MR-1, global mRNA patterns were examined in cells exposed to a wide range of metal and non-metal electron acceptors. Gene expression patterns were similar irrespective of which metal ion was used as electron acceptor, with 60% of the differentially expressed genes showing similar induction or repression relative to fumarate-respiring conditions. Several groups of genes exhibited elevated expression levels in the presence of metals, including those encoding putative multidrug efflux transporters, detoxification proteins, extracytoplasmic sigma factors and PAS-domain regulators. Only one of the 42 predicted c-type cytochromes in MR-1, SO3300, displayed significantly elevated transcript levels across all metal-reducing conditions. Genes encoding decaheme cytochromes MtrC and MtrA that were previously linked to the reduction of different forms of Fe(III) and Mn(M, exhibited only slight decreases in relative mRNA abundances under metal-reducing conditions. In contrast, specific transcriptome responses were displayed to individual non-metal electron acceptors resulting in the identification of unique groups of nitrate-, thiosulfate- and TMAO-induced genes including previously uncharacterized multi-cytochrome gene clusters. Collectively, the gene expression results reflect the fundamental differences between metal and non-metal respiratory pathways of S. oneidensis MR-1, where the coordinate induction of detoxification and stress response genes play a key role in adaptation of this organism under metal-reducing conditions. Moreover, the relative paucity and/or the constitutive nature of genes involved in electron transfer to metals is likely due to the low-specificity and the opportunistic nature of the metal-reducing electron transport pathways. C1 Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Michigan State Univ, Ctr Microbial Ecol, E Lansing, MI 48824 USA. Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA. RP Beliaev, AS (reprint author), Pacific NW Natl Lab, Div Biol Sci, POB 999,MS P7-50, Richland, WA 99352 USA. EM alex.beliaev@pnl.gov; zhouj@ornl.gov RI Klingeman, Dawn/B-9415-2012; Beliaev, Alexander/E-8798-2016; OI Klingeman, Dawn/0000-0002-4307-2560; Beliaev, Alexander/0000-0002-6766-4632; Romine, Margaret/0000-0002-0968-7641 NR 51 TC 122 Z9 126 U1 5 U2 47 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 OCT PY 2005 VL 187 IS 20 BP 7138 EP 7145 DI 10.1128/JB.187.20.7138-7145.2005 PG 8 WC Microbiology SC Microbiology GA 973FY UT WOS:000232509500031 PM 16199584 ER PT J AU Pilpa, RM Clubb, RT AF Pilpa, RM Clubb, RT TI NMR resonance assignments of the NEAT (NEAr Transporter) domain from the Staphylococcus aureus IsdH protein SO JOURNAL OF BIOMOLECULAR NMR LA English DT Letter C1 Univ Calif Los Angeles, Dept Chem & Biochem, DOE Inst Genom & Proteom, Los Angeles, CA 90095 USA. Univ Calif Los Angeles, Mol Biol Lab, Los Angeles, CA 90095 USA. RP Clubb, RT (reprint author), Univ Calif Los Angeles, Dept Chem & Biochem, DOE Inst Genom & Proteom, 406 Hilgard Ave, Los Angeles, CA 90095 USA. EM rclubb@mbi.ucla.edu FU NIAID NIH HHS [R01 AI052217] NR 2 TC 3 Z9 3 U1 1 U2 1 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0925-2738 J9 J BIOMOL NMR JI J. Biomol. NMR PD OCT PY 2005 VL 33 IS 2 BP 137 EP 137 DI 10.1007/s10858-005-2898-2 PG 1 WC Biochemistry & Molecular Biology; Spectroscopy SC Biochemistry & Molecular Biology; Spectroscopy GA 979EY UT WOS:000232926400009 PM 16258836 ER PT J AU Holland, AW Li, GT Shahin, AM Long, GJ Bell, AT Tilley, TD AF Holland, AW Li, GT Shahin, AM Long, GJ Bell, AT Tilley, TD TI New Fe/SiO2 materials prepared using diiron molecular precursors: Synthesis, characterization and catalysis SO JOURNAL OF CATALYSIS LA English DT Article DE molecular precursors; hydrocarbon oxidation; Fe/SiO2; diiron centers ID BINUCLEAR IRON(III) COMPLEX; IRON PHOSPHATE CATALYSTS; METHANE MONOOXYGENASE; SELECTIVE OXIDATION; DIOXYGEN ACTIVATION; SITE ISOLATION; ACTIVE-SITES; X-RAY; PHYSICOCHEMICAL CHARACTERIZATION; RIBONUCLEOTIDE REDUCTASE AB Several well-defined diiron siloxide complexes have been synthesized, isolated, characterized, and used as molecular precursors for the grafting of well-defined isolated iron species on the surface of mesoporous silica SBA-15. The precursors have bridging siloxide ligands, a diamine linker, or a mu-oxo diiron core, and their binuclear structures have been confirmed by elemental analysis, solution molecular weight measurements, and nuclear magnetic resonance spectroscopy. All precursors react with SBA- 15 to immobilize the iron centers and produce silanol; the various stoichiometries and structural implications of these grafting reactions are discussed. Calcination of the grafted iron complexes yields materials largely devoid of organic components, and these calcined catalysts are active in the oxidation of hydrocarbons by hydrogen peroxide. The catalytic activities and selectivities of these materials are compared with each other and with those of other Fe/SiO2 catalysts. Issues including iron-loading dependence and grafting conditions are discussed. Characterization of the catalysts by diffuse-reflectance ultraviolet-visible, X-band electron paramagnetic resonance, Mossbauer, and extended X-ray absorption fine structure spectroscopies indicates that although the diiron structures of the precursors are usually maintained during the initial grafting process, calcination results in their conversion to monoiron centers on the support. This theory is also consistent with the generally similar catalytic behaviors of materials prepared from diiron and monoiron precursors. The implications of these findings for the generality of molecular precursor techniques are discussed. (c) 2005 Elsevier Inc. All rights reserved. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Missouri, Dept Chem, Rolla, MO 65409 USA. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. RP Tilley, TD (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM tdtilley@berkeley.edu NR 97 TC 33 Z9 34 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 0021-9517 J9 J CATAL JI J. Catal. PD OCT 1 PY 2005 VL 235 IS 1 BP 150 EP 163 DI 10.1016/j.jcat.2005.07.003 PG 14 WC Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA 968FO UT WOS:000232147500015 ER PT J AU Woods, KN Wiedemann, H AF Woods, KN Wiedemann, H TI The influence of chain dynamics on the far-infrared spectrum of liquid methanol-water mixtures SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID HYDROGEN-BOND DYNAMICS; POLARIZABILITY ANISOTROPY RELAXATION; DEPENDENT DIELECTRIC-RELAXATION; NORMAL-MODE ANALYSIS; MOLECULAR-DYNAMICS; ORIENTATIONAL RELAXATION; SPECTROSCOPY PROBES; RAMAN-SCATTERING; ELECTRON PULSES; DIPOLAR LIQUIDS AB Far-infrared-absorption spectroscopy has been used to study the low-frequency (<= 100 cm(-1)) intermolecular modes of methanol in mixtures with water. With the aid of a first-principles molecular-dynamics simulation on an equivalent system, a detailed understanding about the origin of the low-frequency IR modes has been established. The total dipole spectrum from the simulation suggests that the bands appearing in the experimental spectra at approximately 55 and 70 cm(-1) in methanol and methanol-rich mixtures arise from both fluctuations and torsional motions occurring within the methanol hydrogen-bonded chains. The influence of these modes on both the solvation dynamics and the relaxation mechanisms in the liquid is discussed within the context of recent experimental and theoretical results that have emerged from studies focusing on the short-time dynamics in the methanol hydrogen bond network. (c) 2005 American Institute of Physics. C1 Stanford Univ, BioPhys Program, Stanford, CA 94309 USA. Stanford Univ, Dept Appl Phys, Stanford, CA 94309 USA. Stanford Univ, SSRL, Stanford, CA 94309 USA. RP Woods, KN (reprint author), Stanford Univ, BioPhys Program, Stanford, CA 94309 USA. EM knwoods2@lbl.gov NR 57 TC 13 Z9 13 U1 0 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD OCT 1 PY 2005 VL 123 IS 13 AR 134507 DI 10.1063/1.2000239 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 972GO UT WOS:000232442500048 PM 16223314 ER PT J AU Woods, KN Wiedemann, H AF Woods, KN Wiedemann, H TI The influence of chain dynamics on the far-infrared spectrum of liquid methanol SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DEPENDENT DIELECTRIC-RELAXATION; VIBRATIONAL-ENERGY RELAXATION; HYDROGEN-BONDED LIQUIDS; NORMAL-MODE ANALYSIS; MOLECULAR-DYNAMICS; ORIENTATIONAL RELAXATION; ELECTRON PULSES; DIPOLAR LIQUIDS; WATER MIXTURES; SPECTROSCOPY AB Far-infrared-absorption spectroscopy is used to investigate the low-frequency (<= 100 cm(-1)) intermolecular interactions in liquid methanol. Using an intense source of far-infrared radiation, modes are elucidated at approximately 30 and 70 cm(-1) in the absorption spectrum. These modes are believed to arise from intermolecular bending and librational motions, respectively, and are successfully reproduced in an ab initio molecular-dynamics simulation of methanol. (c) 2005 American Institute of Physics. C1 Stanford Univ, BioPhys Program, Stanford, CA 94309 USA. Stanford Univ, Dept Appl Phys, Stanford, CA 94309 USA. Stanford Univ, SSRL, Stanford, CA 94309 USA. RP Woods, KN (reprint author), Stanford Univ, BioPhys Program, Stanford, CA 94309 USA. EM knwoods2@lbl.gov NR 41 TC 10 Z9 10 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD OCT 1 PY 2005 VL 123 IS 13 AR 134506 DI 10.1063/1.2000238 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 972GO UT WOS:000232442500047 PM 16223313 ER PT J AU Marcais, C Verges, B Charriere, S Pruneta, V Merlin, M Billon, S Perrot, L Drai, J Sassolas, A Pennacchio, LA Fruchart-Najib, J Fruchart, JC Durlach, V Moulin, P AF Marcais, C Verges, B Charriere, S Pruneta, V Merlin, M Billon, S Perrot, L Drai, J Sassolas, A Pennacchio, LA Fruchart-Najib, J Fruchart, JC Durlach, V Moulin, P TI Apoa5 Q139X truncation predisposes to late-onset hyperchylomicronemia due to lipoprotein lipase impairment SO JOURNAL OF CLINICAL INVESTIGATION LA English DT Article ID APOLIPOPROTEIN A-V; FAMILIAL COMBINED HYPERLIPIDEMIA; TRIGLYCERIDE-RICH LIPOPROTEINS; B-CONTAINING LIPOPROTEINS; RATIO MASS-SPECTROMETRY; SEVERE HYPERTRIGLYCERIDEMIA; PLASMA TRIGLYCERIDES; GENE-CLUSTER; POLYMORPHISM; METABOLISM AB While type 1 hyperlipidemia is associated with lipoprotein lipase or apoCII deficiencies, the etiology of type 5 hyperlipidemia remains largely unknown. We explored a new candidate gene, APOA5, for possible causative mutations in a pedigree of late-onset, vertically transmitted hyperchylomicronemia. A heterozygous Q139X mutation in APOA5 was present in both the proband and his affected son but was absent in 200 controls. It was subsequently found in 2 of 140 cases of hyperchylomicronemia. Haplotype analysis suggested the new Q139X as a founder mutation. Family studies showed that 5 of 9 total Q139X carriers had hyperchylomicronemia, I patient being homozygote. Severe hypertriglyceridemia. in 8 heterozygotes was strictly associated with the presence on the second allele of 1 of 2 previously described triglyceride-raising minor APOA5 haplotypes. Furthermore, ultracentrifugation fraction analysis indicated in carriers an altered association of ApoaS truncated and WT proteins to lipoproteins, whereas in normal plasma, Apoa5 associated with VLDL and HDL/LDL fractions. APOB100 kinetic studies in 3 severely dyslipidemic patients with Q139X revealed a major impairment of VLDL catabolism. Lipoprotein lipase activity and mass were dramatically reduced in dyslipidemic carriers, leading to severe lipolysis defect. Our observations strongly support in humans a role for APOA5 in lipolysis regulation and in familial hyperchylomicronemia. C1 Ctr Hosp Lyon Sud, Biochim Lab, Hospices Civils Lyon, F-69495 Pierre Benite, France. INSA, INSERM, UMR 585, Villeurbanne, France. CHU Bocage, INSERM, U498, Serv Endocrinol, Dijon, France. Hop Louis Pradel, Hospices Civils Lyon, Federat Endocrinol, Lyon, France. Hop Louis Pradel, Hospices Civils Lyon, Biochim Lab, Lyon, France. Lawrence Berkeley Natl Lab, Dept Genome Sci, Berkeley, CA USA. Joint Genome Inst, Walnut Creek, CA USA. Inst Pasteur, INSERM, U545, Lille, France. Fac Pharm Lille, F-59045 Lille, France. Hop Robert Debre, Serv Endocrinol Malad Metab & Med Interne, Reims, France. RP Marcais, C (reprint author), Ctr Hosp Lyon Sud, Biochim Lab, Hospices Civils Lyon, Batiment 3B,Niveau 1,Chemin Grand Revoyet, F-69495 Pierre Benite, France. EM christophe.marcais@chu-lyon.fr NR 41 TC 113 Z9 123 U1 0 U2 3 PU AMER SOC CLINICAL INVESTIGATION INC PI ANN ARBOR PA 35 RESEARCH DR, STE 300, ANN ARBOR, MI 48103 USA SN 0021-9738 J9 J CLIN INVEST JI J. Clin. Invest. PD OCT PY 2005 VL 115 IS 10 BP 2862 EP 2869 DI 10.1172/JCI24471 PG 8 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA 971IE UT WOS:000232376600037 PM 16200213 ER PT J AU Loong, CK Ozawa, M AF Loong, CK Ozawa, M TI Mass-fractal-like microstructure and proton disorder in nanostructured pseudoboehmite: a neutron-scattering study SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY LA English DT Article; Proceedings Paper CT International Symposium on Materials Processing for Nanostructured Devices CY MAY 04-07, 2003 CL Nouan Fuselier, FRANCE SP USAF Off Sci & Res, CNRS, Univ Orleans, Ecole Polytechn Palaiseau DE boehmite; pseudoboehmite; fractal; proton disorder; neutron scattering ID BOEHMITE GAMMA-ALOOH; SPACE GROUP; MOBILITY; SOLIDS AB Boehmite (gamma-AlOOH) is often the initial product in sol-gel syntheses of high surface-area alumina powders. Depending on the processing routes, the microstructure of an AlOOH powder can be tailored to exhibit nanometer particle size and complex interfacial OH sites. Neutron small-angle scattering (SANS) and spectroscopy were utilized to characterize the microstructure and hydrogen vibrations of a nanostructured pseudoboehmite and a highly crystallized boehmite powder. The SANS data reveal a mass-fractal-like microstructure in pseudoboehmite. The vibrational bands of hydrogen atoms in pseudoboehmite are broad, which is indicative of a high degree of proton delocalization and disordered OH sites. (c) 2004 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Div Intense Pulsed Neutron Source, Argonne, IL 60439 USA. Nagoya Inst Technol, Ceram Res Lab, Gifu 507, Japan. RP Loong, CK (reprint author), Argonne Natl Lab, Div Intense Pulsed Neutron Source, Bldg 360,9700 S Cass Ave, Argonne, IL 60439 USA. EM ckloon@anl.gov NR 20 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0022-0728 J9 J ELECTROANAL CHEM JI J. Electroanal. Chem. PD OCT 1 PY 2005 VL 584 IS 1 SI SI BP 5 EP 8 DI 10.1016/j.jelechem.2004.04.023 PG 4 WC Chemistry, Analytical; Electrochemistry SC Chemistry; Electrochemistry GA 974HV UT WOS:000232583100002 ER PT J AU Raty, JY Galli, G AF Raty, JY Galli, G TI Optical properties and structure of nanodiamonds SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY LA English DT Article; Proceedings Paper CT International Symposium on Materials Processing for Nanostructured Devices CY MAY 04-07, 2003 CL Nouan Fuselier, FRANCE SP USAF Off Sci & Res, CNRS, Univ Orleans, Ecole Polytechn Palaiseau DE nanoparticle; diamond; fullerene; absorption; ab initio simulation ID INTERSTELLAR DIAMONDS; METEORITES; MODEL AB We present a theoretical study of the structure and optical properties of nanodiamonds. Using ab initio molecular dynamics simulation, we confirm that quantum confinement effects become negligible between 2 and 3 nm in size. In this size domain, specific surface reconstructions occur upon sample dehydrogenation, leading to fullerene-capped structures, or 'bucky diamonds' with absorption spectra similar to the experiment. We finally show that the HOMO and LUMO states are interface states in the reconstructed structures. (c) 2004 Elsevier B.V.. All rights reserved. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Liege, Dept Phys, B-4000 Cointe Ougree, Belgium. RP Raty, JY (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA. EM jyraty@ulg.ac.be NR 16 TC 22 Z9 22 U1 0 U2 7 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0022-0728 J9 J ELECTROANAL CHEM JI J. Electroanal. Chem. PD OCT 1 PY 2005 VL 584 IS 1 SI SI BP 9 EP 12 DI 10.1016/j.jelechem.2004.10.032 PG 4 WC Chemistry, Analytical; Electrochemistry SC Chemistry; Electrochemistry GA 974HV UT WOS:000232583100003 ER PT J AU Gu, Z Edgar, JH Speakman, SA Blom, D Perrin, J Chaudhuri, J AF Gu, Z Edgar, JH Speakman, SA Blom, D Perrin, J Chaudhuri, J TI Thermal oxidation of polycrystalline and single crystalline aluminum nitride wafers SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article DE thermal oxidation; aluminum nitride (AlN); polycrystalline; single crystalline ID BULK ALN; GROWTH; SUBLIMATION; GAN AB Two types of aluminum nitride (AlN) samples were oxidized in flowing oxygen between 900 degrees C and 1150 degrees C for up to 6 h-highly (0001) textured polycrystalline AIN wafers and low defect density AIN single crystals. The N-face consistently oxidized at a faster rate than the Al-face. At 900 C and 1000 C after 6 h, the oxide was 15% thicker on the N-face than on the Al-face of polycrystalline AIN. At 1100 degrees C and 1150 degrees C, the oxide was only 5% thicker on the N-face, as the rate-limiting step changed from kinetically-controlled to diffusion-controlled with the oxide thickness. A linear parabolic model was established for the thermal oxidation of polycrystalline AlN on both the Al- and N-face. Transmission electron microscopy (TEM) confirmed the formation of a thicker crystalline oxide film on the N-face than on the Al-face, and established the crystallographic relationship between the oxide film and substrate. The oxidation of high-quality AIN single crystals resulted in a more uniform colored oxide layer compared to polycrystalline AlN. The aluminum oxide layer was crystalline with a rough AIN/oxide interface. The orientation relationship between AlN and Al2O3 was (0001) AlN//$(1010) over bar $ Al2O3 and $(1100) over bar $ AlN//$(0112) over bar $ Al2O3. C1 Kansas State Univ, Dept Chem Engn, Manhattan, KS 66506 USA. Oak Ridge Natl Lab, High Temp Mat Lab, Oak Ridge, TN 37831 USA. Texas Tech Univ, Dept Mech Engn, Lubbock, TX 79409 USA. RP Gu, Z (reprint author), Kansas State Univ, Dept Chem Engn, Manhattan, KS 66506 USA. EM guzheng@ksu.edu RI Chaudhuri, Jharna/E-8863-2013 NR 23 TC 11 Z9 11 U1 1 U2 9 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086 USA SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD OCT PY 2005 VL 34 IS 10 BP 1271 EP 1279 DI 10.1007/s11664-005-0250-y PG 9 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA 972ME UT WOS:000232457100001 ER PT J AU Bang, WH Oh, KH Jung, JP Morris, JW Hua, F AF Bang, WH Oh, KH Jung, JP Morris, JW Hua, F TI The correlation between stress relaxation and steady-state creep of eutectic Sn-Pb SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article DE eutectic Sn-Pb solder; stress relaxation; steady-state creep ID TIN-LEAD SOLDER; GRAIN-BOUNDARY DIFFUSION; STRAIN-RATE; SUPERPLASTIC DEFORMATION; CONSTITUTIVE RELATIONS; POLYKRISTALLINEM ZINN; ALLOYS; BEHAVIOR; JOINTS; METALS AB This paper surveys and compares creep and stress relaxation data on fine-grained eutectic Sn-Pb. It examines the consistency of the available data on this extensively studied solder material and studies whether stress relaxation offers a reasonable alternative to the more laborious conventional creep tests. The data survey reveals systematic differences between the creep behavior of material that is grain-refined by cold work and recrystallization ("recrystal-lized") and that refined by rapid solidification ("quenched"). The recrystallized material has the conventional three regimes of creep behavior: a high-stress region with a stress exponent, n similar to 4-7 and an activation energy Q similar to 80 kJ/ mole (a bit below that for self-diffusion of Pb and Sn), an intermediate region with n similar to 2 and Q similar to 45 kJ/mole (near that for grain boundary diffusion), and a low-stress region with n similar to 3 and Q similar to 80 (suggesting a reversion to a bulk mechanism). The quenched material shows only two regions: a high-stress creep with a stress exponent, n similar to 3-7, and a low-stress region with n similar to 3. The mechanisms in both regimes have activation energies intermediate between bulk and interface values (50-70 kJ/mole). With minor exceptions, the stress relaxation data and the creep data are in reasonable agreement. Most of the exceptions seem to be related to the difficulty of capturing the full details of grain boundary creep in stress relaxation tests. C1 Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea. Univ Seoul, Dept Mat Sci & Engn, Seoul 130743, South Korea. Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Ctr Adv Mat, Berkeley, CA 94720 USA. Intel Corp, Santa Clara, CA 95052 USA. RP Bang, WH (reprint author), Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea. EM jwmorris@berkeley.edu NR 80 TC 6 Z9 6 U1 0 U2 5 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086 USA SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD OCT PY 2005 VL 34 IS 10 BP 1287 EP 1300 DI 10.1007/s11664-005-0252-9 PG 14 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA 972ME UT WOS:000232457100003 ER PT J AU Davande, H Borodin, O Smith, GD Sewell, TD AF Davande, H Borodin, O Smith, GD Sewell, TD TI Quantum chemistry-based force field for simulations of energetic dinitro compounds SO JOURNAL OF ENERGETIC MATERIALS LA English DT Article DE PBX; molecular orbital calculations; heterogeneous explosives ID MOLECULAR-DYNAMICS; MODEL; DENSITY; SYSTEMS; HMX AB Quantum Chemistry-Based Force Field for Simulations of Energetic Dinitro Compounds A quantum chemistry based force field for molecular dynamics simulations of energetic dinitro compounds has been developed, based on intermolecular binding energies, molecular geometries, molecular electrostatic potentials, and conformational energies obtained from quantum chemistry calculations on model compounds. Nonbonded parameters were determined by fitting experimental densities and heats of vaporizations of model compounds. Torsional parameters were parameterized to reproduce accurately the relative conformational energy minima and barriers in 2,2-dinitropropane, di-methoxy di-methyl ether, 2,2-dinitro-3-methoxypropane, and bis(2,2-dinitropropyl)formal. Molecular dynamics simulations using the developed force field accurately reproduce thermodynamic and transport properties of 1,1-dinitroethane, 2,2-dinitropropane, and a eutectic mixture of bis(2,2-dinitropropyl)formal and bis(2,2-dinitropropyl)acetal. C1 Univ Utah, Dept Chem Engn, Salt Lake City, UT 84112 USA. Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA. RP Smith, GD (reprint author), Univ Utah, Dept Chem Engn, 122 S Cent Campus Dr,Room 304, Salt Lake City, UT 84112 USA. EM hemali.davande@utah.edu RI Borodin, Oleg/B-6855-2012 OI Borodin, Oleg/0000-0002-9428-5291 NR 30 TC 8 Z9 8 U1 2 U2 7 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0737-0652 J9 J ENERG MATER JI J. Energ. Mater. PD OCT-DEC PY 2005 VL 23 IS 4 BP 205 EP 237 DI 10.1080/07370650591006885 PG 33 WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical; Materials Science, Multidisciplinary SC Chemistry; Engineering; Materials Science GA 972UP UT WOS:000232479000001 ER PT J AU Chorpening, B Richards, GA Casleton, KH Woike, M Willis, B Hoffman, L AF Chorpening, B Richards, GA Casleton, KH Woike, M Willis, B Hoffman, L TI Demonstration of a reheat combustor for power production with CO2 sequestration SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 48th International Gas Turbine and Aeroengine Congress and Exhibition CY JUN 16-19, 2003 CL ATLANTA, GA SP ASME ID SEPARATION AB Concerns about climate change have encouraged significant interest in concepts for ultralow or "zero "-emissions power generation systems. In a concept proposed by Clean Energy Systems, Inc., nitrogen is removed from the combustion air and replaced with steam diluent. In this way, formation of nitrogen oxides is prevented, and the exhaust stream can be separated into concentrated CO2 and water streams. The concentrated CO2 stream could then serve as input to a CO2 sequestration process. In this study, experimental data are reported from a full-scale combustion test using steam as the diluent in oxy-fuel combustion. This combustor represents the "reheat" combustion System in a steam cycle that uses a high and low-pressure steam expansion. The reheat combustor serves to raise the temperature of the low-pressure steam turbine inlet, similar to the reheat stage of a conventional steam power cycle. Unlike a conventional steam cycle, the reheat enthalpy is actually generated by oxy-fuel combustion in the steam flow. This paper reports on the unique design aspects of this combustor as well as initial emissions and operating performance. C1 US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA. NASA, Glenn Res Ctr, Plum Brook Stn, Sandusky, OH 44870 USA. Clean Energy Syst Inc, Rancho Cordova, CA 95742 USA. RP Chorpening, B (reprint author), US DOE, Natl Energy Technol Lab, POB 880, Morgantown, WV 26507 USA. NR 18 TC 7 Z9 7 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA SN 0742-4795 J9 J ENG GAS TURB POWER JI J. Eng. Gas. Turbines Power-Trans. ASME PD OCT PY 2005 VL 127 IS 4 BP 740 EP 747 DI 10.1115/1.1924633 PG 8 WC Engineering, Mechanical SC Engineering GA 974HZ UT WOS:000232583500004 ER PT J AU Spearot, DE Jacob, KI McDowell, DL Plimpton, SJ AF Spearot, DE Jacob, KI McDowell, DL Plimpton, SJ TI Effect of deformation path sequence on the behavior of nanoscale copper bicrystal interfaces SO JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME LA English DT Article ID MOLECULAR-DYNAMICS; VOID NUCLEATION; SINGLE-CRYSTAL; LENGTH SCALE; SIMULATIONS; METALS; STRAIN; TENSION; PLASTICITY; DEFECTS AB Molecular dynamics calculations are performed to study the effect of deformation sequence and history on the inelastic behavior of copper interfaces on the nanoscale. An asymmetric 45 deg tilt bicrystal interface is examined, representing an idealized high-angle grain boundary interface. The interface model is subjected to three different deformation paths: tension then shear shear then tension, and combined proportional tension and shear Analysis shows that path-history dependent material behavior is confined within a finite layer of deformation around the bicrystal interface. The relationships between length scale and,interface properties, such as the thickness of the path-history dependent layer and the interface strength, are discussed in detail. C1 Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA. Georgia Inst Technol, Sch Polymer Text & Fiber Engn, Atlanta, GA 30332 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Spearot, DE (reprint author), Georgia Inst Technol, George W Woodruff Sch Mech Engn, 801 Ferst Dr, Atlanta, GA 30332 USA. EM david.mcdowell@me.gatech.edu NR 28 TC 10 Z9 10 U1 4 U2 14 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA SN 0094-4289 J9 J ENG MATER-T ASME JI J. Eng. Mater. Technol.-Trans. ASME PD OCT PY 2005 VL 127 IS 4 BP 374 EP 382 DI 10.1115/1.1867983 PG 9 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA 976WW UT WOS:000232765200004 ER PT J AU Chen, YF Li, DY Lukes, JR Majumdar, A AF Chen, YF Li, DY Lukes, JR Majumdar, A TI Monte Carlo simulation of silicon nanowire thermal conductivity SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME LA English DT Article DE nanowire; Monte Carlo simulation; thermal conductivity; dispersion relations; phonon scattering; genetic algorithm ID HEAT-CONDUCTION; SUPERLATTICE NANOWIRES; PHONON TRANSPORT; LOW-TEMPERATURES; THIN-FILMS; GERMANIUM; CRYSTALS; SI AB Monte Carlo simulation is applied to investigate phonon transport in single crystalline Si nanowires. Phonon-phonon normal (N) and Umklapp (U) scattering processes are modeled with a genetic algorithm to satisfy energy and momentum conservation. The scattering rates of N and U scattering processes are found from first-order perturbation theory. The thermal conductivity of Si nanowires is simulated and good agreement is achieved with recent experimental data. In order to study the confinement effects on phonon transport in nanowires, two different phonon dispersions, one from experimental measurements on bulk Si and the other solvedfrom elastic wave theory, are adopted in the simulation. The discrepancy between simulations using different phonon dispersions increases as the nanowire diameter decreases, which suggests that the confinement effect is significant when the nanowire diameter approaches tens of nanometers. It is found that the U scattering probability in Si nanowires is higher than that in bulk Si due to the decrease of the frequency gap between different modes and the reduced phonon group velocity. Simulation results suggest that the dispersion relation for nanowires obtained from elasticity theory should be used to evaluate nanowire thermal conductivity as the nanowire diameter is reduced to the sub-100 nm scale. C1 Southeast Univ, Dept Mech Engn, Nanjing 210096, Peoples R China. Southeast Univ, China Educ Council, Key Lab MEMS, Nanjing 210096, Peoples R China. Vanderbilt Univ, Dept Mech Engn, Nashville, TN 37235 USA. Univ Penn, Dept Mech Engn & Appl Mech, Philadelphia, PA 19104 USA. Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Southeast Univ, Dept Mech Engn, Nanjing 210096, Peoples R China. EM yunfeichen@yahoo.com RI Li, Deyu/D-2938-2012 OI Li, Deyu/0000-0001-8364-0924 NR 37 TC 142 Z9 145 U1 5 U2 54 PU ASME PI NEW YORK PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA SN 0022-1481 EI 1528-8943 J9 J HEAT TRANS-T ASME JI J. Heat Transf.-Trans. ASME PD OCT PY 2005 VL 127 IS 10 BP 1129 EP 1137 DI 10.1115/1.2035114 PG 9 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA 979IW UT WOS:000232936600007 ER PT J AU Perelson, AS Ribeiro, RM AF Perelson, AS Ribeiro, RM TI Mutagenic effects of ribavirin in vivo SO JOURNAL OF HEPATOLOGY LA English DT Editorial Material ID HEPATITIS-C VIRUS; INTERFERON-ALPHA-2B PLUS RIBAVIRIN; ERROR CATASTROPHE; INITIAL TREATMENT; RANDOMIZED-TRIAL; VIRAL DYNAMICS; RESPONSE RATES; INFECTION; REPLICATION; COMBINATION C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Perelson, AS (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM asp@lanl.gov FU NCRR NIH HHS [RR06555] NR 31 TC 13 Z9 13 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-8278 J9 J HEPATOL JI J. Hepatol. PD OCT PY 2005 VL 43 IS 4 BP 553 EP 555 DI 10.1016/j.jhep.2005.07.003 PG 3 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 969KH UT WOS:000232232500002 PM 16099528 ER PT J AU Adams, A Liu, X McGreevy, J Saltman, A Silverstein, E AF Adams, A Liu, X McGreevy, J Saltman, A Silverstein, E TI Things fall apart: topology change from winding tachyons SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE sigma models; renormalization group; superstrings and heterotic strings; tachyon condensation ID SINE-GORDON THEORY; CLOSED STRING TACHYONS; FIELD-THEORY; COSMOLOGICAL CONSTANT; RENORMALIZATION-GROUP; PHASE-TRANSITIONS; QUANTUM-GRAVITY; GAUGE-THEORIES; 2 DIMENSIONS; BLACK-HOLES AB We argue that closed string tachyons drive two spacetime topology changing transitions - loss of genus in a Riemann surface and separation of a Riemann surface into two components. The tachyons of interest are localized versions of Scherk-Schwarz winding string tachyons arising on Riemann surfaces in regions of moduli space where string-scale tubes develop. Spacetime and world-sheet renormalization group analyses provide strong evidence that the decay of these tachyons removes a portion of the spacetime, splitting the tube into two pieces. We address the fate of the gauge fields and charges lost in the process, generalize it to situations with weak flux backgrounds, and use this process to study the type 0 tachyon, providing further evidence that its decay drives the theory sub-critical. Finally, we discuss the time-dependent dynamics of this topology-changing transition and find that it can occur more efficiently than analogous transitions on extended supersymmetric moduli spaces, which are limited by moduli trapping. C1 Harvard Univ, Jefferson Phys Lab, Cambridge, MA 02138 USA. Stanford Univ, SLAC, Stanford, CA 94305 USA. Stanford Univ, Dept Phys, Stanford, CA 94305 USA. RP Adams, A (reprint author), Harvard Univ, Jefferson Phys Lab, Cambridge, MA 02138 USA. EM allan@schwinger.harvard.edu; liuxiao@stanford.edu; mcgreevy@stanford.edu; saltman@stanford.edu; evas@slac.stanford.edu NR 85 TC 39 Z9 39 U1 0 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 OCT PY 2005 IS 10 AR 033 PG 36 WC Physics, Particles & Fields SC Physics GA 979WW UT WOS:000232976700033 ER PT J AU Aspinwall, PS Kallosh, R AF Aspinwall, PS Kallosh, R TI Fixing all moduli for M-theory on K3 x K3 SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE F-theory; M-theory; superstring vacua ID QUATERNIONIC MANIFOLDS; FIELD-THEORIES; F-THEORY; VACUA; CONSTRAINTS AB We analyze M-theory compactified on K3 x K3 with fluxes preserving half the supersymmetry and its F-theory limit, which is dual to an orientifold of the type IIB string on K3 x (T-2/Z(2)). The geometry of attractive K3 surfaces plays a significant role in the analysis. We prove that the number of choices for the K3 surfaces is finite and we show how they can be completely classified. We list the possibilities in one case. We then study the instanton effects and see that they will generically fix all of the moduli. We also discuss situations where the instanton effects might not fix all the moduli. C1 Stanford Univ, Dept Phys, Stanford, CA 94305 USA. SLAC, Stanford, CA 94305 USA. Duke Univ, Ctr Geometry & Theoret Phys, Durham, NC 27708 USA. RP Aspinwall, PS (reprint author), Stanford Univ, Dept Phys, Stanford, CA 94305 USA. EM psa@cgtp.duke.edu; kallosh@stanford.edu NR 40 TC 24 Z9 24 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 OCT PY 2005 IS 10 AR 001 PG 20 WC Physics, Particles & Fields SC Physics GA 979WW UT WOS:000232976700001 ER PT J AU Baer, H Krupovnickas, T Profumo, S Ullio, P AF Baer, H Krupovnickas, T Profumo, S Ullio, P TI Model independent approach to focus point supersymmetry: from dark matter to collider searches SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Review DE dark matter and double beta decay; Hadron-Hadron scattering; supersymmetry phenomenology ID GRAND UNIFIED THEORIES; LARGE HADRON COLLIDER; MINIMAL SUPERGRAVITY; STANDARD MODEL; SCALAR MASS; FLAVOR PROBLEM; HEAVY SCALARS; RELIC DENSITY; SUSY; TEVATRON AB The focus point region of supersymmetric models is compelling in that it simultaneously features low fine-tuning, provides a decoupling solution to the SUSY flavor and CP problems, suppresses proton decay rates and can accommodate the WMAP measured cold dark matter (DM) relic density through a mixed bino-higgsino dark matter particle. We present the focus point region in terms of a weak scale parameterization, which allows for a relatively model independent compilation of phenomenological constraints and prospects. We present direct and indirect neutralino dark matter detection rates for two different halo density profiles, and show that prospects for direct DM detection and indirect detection via neutrino telescopes such as IceCube and anti-deuteron searches by GAPS are especially promising. We also present LHC reach prospects via gluino and squark cascade decay searches, and also via clean trilepton signatures arising from chargino-neutralino production. Both methods provide a reach out to m(g) similar to 1.7TeV. At a TeV-scale linear e(+)e(-) collider (LC), the maximal reach is attained in the Z(1)Z(2) or Z(1)Z(3) channels. In the DM allowed region of parameter space, a root s = 0.5TeV LC has a reach which is comparable to that of the LHC. However, the reach of a 1TeV LC extends out to m(g) similar to 3.5TeV. C1 Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Brookhaven Natl Lab, High Energy Theory Grp, Upton, NY 11973 USA. SISSA, ISAS, I-34013 Trieste, Italy. RP Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. EM baer@hep.fsu.edu; tadas@quark.phy.bnl.gov; profumo@hep.fsu.edu; ullio@he.sissa.it NR 119 TC 61 Z9 61 U1 0 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 OCT PY 2005 IS 10 AR 020 DI 10.1088/1126-6708/2005/10/020 PG 38 WC Physics, Particles & Fields SC Physics GA 979WW UT WOS:000232976700020 ER PT J AU Bergshoeff, E Kallosh, R Kashani-Poor, AK Sorokin, D Tomasiello, A AF Bergshoeff, E Kallosh, R Kashani-Poor, AK Sorokin, D Tomasiello, A TI An index for the Dirac operator on D3 branes with background fluxes SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE D-branes; flux compactifications ID STRING THEORY; F-THEORY; INFLATION; SUPERPOTENTIALS; SUPERSTRINGS; EQUATIONS; DUALITY AB We study the problem of instanton generated superpotentials in Calabi-Yau orientifold compactifications directly in type-IIB string theory. To this end, we derive the Dirac equation on a euclidean D3 brane in the presence of background fluxes. We propose an index which governs whether the generation of a superpotential in the effective 4d theory by D3 brane instantons is possible. Applying the formalism to various classes of examples, including the K3 x T-2/Z(2) orientifold, in the absence and presence of fluxes, we show that our results are consistent with conclusions attainable via duality from an M-theory analysis. C1 Univ Groningen, Ctr Theoret Phys, NL-9747 AG Groningen, Netherlands. Stanford Univ, Dept Phys, Stanford, CA 94305 USA. Kyoto Univ, Yukawa Inst, Kyoto 6068502, Japan. Stanford Univ, SLAC, Stanford, CA 94305 USA. Univ Padua, Ist Nazl Fis Nucl, Sez Padua, I-35131 Padua, Italy. Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy. RP Bergshoeff, E (reprint author), Univ Groningen, Ctr Theoret Phys, Nijenborgh 4, NL-9747 AG Groningen, Netherlands. EM E.A.Bergshoeff@rug.nl; kallosh@stanford.edu; kashani@slac.stanford.edu; sorokin@pd.infn.it; tomasiel@stanford.edu RI Tomasiello, Alessandro/J-1326-2014 OI Tomasiello, Alessandro/0000-0002-5772-5729 NR 53 TC 48 Z9 48 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 OCT PY 2005 IS 10 AR 102 PG 24 WC Physics, Particles & Fields SC Physics GA 979WW UT WOS:000232976700102 ER PT J AU Randall, L Schwartz, MD Thambyahpillai, S AF Randall, L Schwartz, MD Thambyahpillai, S TI Discretizing gravity in warped spacetime SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE lattice models of gravity; field theories in higher dimensions; lattice quantum field theory ID PHENOMENOLOGICAL LAGRANGIANS; DIMENSIONS AB We investigate the discretized version of the compact Randall-Sundrum model. By studying the mass eigenstates of the lattice theory, we demonstrate that for warped space, unlike for flat space, the strong coupling scale does not depend on the IR scale and lattice size. However, strong coupling does prevent us from taking the continuum limit of the lattice theory. Nonetheless, the lattice theory works in the manifestly holographic regime and successfully reproduces the most significant features of the warped theory. It is even in some respects better than the KK theory, which must be carefully regulated to obtain the correct physical results. Because it is easier to construct lattice theories than to find exact solutions to GR, we expect lattice gravity to be a useful tool for exploring field theory in curved space. C1 Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. RP Randall, L (reprint author), Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. EM randall@physics.harvard.edu; mdschwartz@lbl.gov; thamby@physics.harvard.edu NR 22 TC 12 Z9 12 U1 0 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 OCT PY 2005 IS 10 AR 110 PG 16 WC Physics, Particles & Fields SC Physics GA 979WW UT WOS:000232976700110 ER PT J AU Shepard, PG AF Shepard, PG TI Black hole statistics from holography SO JOURNAL OF HIGH ENERGY PHYSICS LA English DT Article DE m(atrix) theories; AdS-CFT and dS-CFT correspondence; black holes in string theory AB We study the microstates of the "small" black hole in the 1/2-BPS sector of AdS(5) x S-5, the superstar [1], using the powerful holographic description provided by LLM [2]. The system demonstrates the inherently statistical nature of black holes, with the geometry of [1] emerging only after averaging over an ensemble of geometries. The individual microstate geometries differ in the highly non-trivial topology of a quantum foam at their core, and the entropy can be understood as a partition of N units of flux among 5-cycles, as required by flux quantization. While the system offers confirmation of the most controversial aspect of Mathur and Lunin's recent "fuzzball" proposal [3, 4], we see signs of a discrepancy in interpreting its details. C1 Univ Calif Berkeley, Ctr Theoret Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. RP Shepard, PG (reprint author), Univ Calif Berkeley, Ctr Theoret Phys, Berkeley, CA 94720 USA. EM pgs@socrates.berkeley.edu NR 24 TC 14 Z9 14 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 OCT PY 2005 IS 10 AR 072 PG 19 WC Physics, Particles & Fields SC Physics GA 979WW UT WOS:000232976700072 ER PT J AU Sodano, HA Inman, DJ Park, G AF Sodano, HA Inman, DJ Park, G TI Comparison of piezoelectric energy harvesting devices for recharging batteries SO JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES LA English DT Article DE power harvesting; energy scavenging; piezoelectric; macro-fiber composite; MFC; self-powered ID COMPOSITE ACTUATORS AB Piezoelectric materials can be used as a means of transforming ambient vibrations into electrical energy that can then be stored and used to power other devices. With the recent surge of microscale devices, piezoelectric power generation can provide a convenient alternative to traditional power sources used to operate certain types of sensors/actuators, telemetry, and MEMS devices. However, the energy produced by these materials is in many cases far too small to directly power an electrical device. Therefore, much of the research into power harvesting has focused on methods of accumulating the energy until a sufficient amount is present, allowing the intended electronics to be powered. In a recent study by Sodano et al. (2004a) the ability to take the energy generated through the vibration of a piezoelectric material was shown to be capable of recharging a discharged nickel metal hydride battery. In the present study, three types of piezoelectric devices are investigated and experimentally tested to determine each of their abilities to transform ambient vibration into electrical energy and their capability to recharge a discharged battery. The three types of piezoelectric devices tested are the commonly used monolithic piezoceramic material lead-zirconate-titanate (PZT), the bimorph Quick Pack (QP) actuator, and the macro-fiber composite (MFC). The experimental results estimate the efficiency of the three devices tested and identify the feasibility of their use in practical applications. Different capacity batteries are recharged using each device, to determine the charge time and maximum capacity battery that can be charged. The results presented in this article provide a means of choosing the piezoelectric device to be used and estimate the amount of time required to recharge a specific capacity battery. C1 Michigan Technol Univ, Dept Mech Engn Energy Mech, Houghton, MI 49931 USA. Virginia Polytech Inst & State Univ, Ctr Intelligent Mat Syst & Struct, Blacksburg, VA 24061 USA. Los Alamos Natl Lab, Weap Response Grp, Los Alamos, NM 87545 USA. RP Sodano, HA (reprint author), Michigan Technol Univ, Dept Mech Engn Energy Mech, Houghton, MI 49931 USA. EM hsodano@vt.edu NR 17 TC 287 Z9 295 U1 13 U2 133 PU SAGE PUBLICATIONS LTD PI LONDON PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND SN 1045-389X J9 J INTEL MAT SYST STR JI J. Intell. Mater. Syst. Struct. PD OCT PY 2005 VL 16 IS 10 BP 799 EP 807 DI 10.1177/1045389X05056681 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA 969ZN UT WOS:000232275100003 ER PT J AU Hernandez, VJ Mendez, AJ Bennett, CV Lennon, WJ AF Hernandez, VJ Mendez, AJ Bennett, CV Lennon, WJ TI Simple robust receiver structure for gigabit ethernet O-CDMA using matrix codes SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article DE access protocols; code division multiple access (CDMA); codes; encoding; multiaccess communication; numerical modeling; optical fiber communication ID DIVISION MULTIPLE-ACCESS; OPTICAL-CDMA; PERFORMANCE ANALYSIS; NETWORKS; SYSTEMS; DESIGN AB We have developed an optical code division multiple access (O-CDMA) technology demonstrator (TD) based on two-dimensional (2-D) codes. The 2-D codes are derived from folded optimum Golomb rulers, implemented as wavelength/time lambda/T codes. The objective of the research is to develop the science and technology for high-performance, low-cost, and robust O-CDMA applications. A key ingredient of the TD is a simple receiver structure that is based on hard-limiting after optical-to-electrical (O/E) conversion and time windowing with a conventional electronic D flip-flop. With the TD, we demonstrate six asynchronous users at less than 10(-11) bit error rate (BER) and up to eight users at 10(-8) BER, limited by saturation in the optical preamplifier. C1 Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Mendez R&D Associates, El Segundo, CA 90245 USA. RP Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA. EM vjhernandez@ucclavis.edu; MendezRDA@aol.com RI Bennett, Corey/C-2403-2009; Hernandez, Vincent/C-2522-2009 OI Bennett, Corey/0000-0003-4365-5739; NR 24 TC 5 Z9 5 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0733-8724 EI 1558-2213 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD OCT PY 2005 VL 23 IS 10 BP 3105 EP 3110 DI 10.1109/JLT.2005.856171 PG 6 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA 978ZM UT WOS:000232911800028 ER PT J AU Lee, JY Timmins, JM Mulya, A Smith, TL Zhu, YW Rubin, EM Chisholm, JW Colvin, PL Parks, JS AF Lee, JY Timmins, JM Mulya, A Smith, TL Zhu, YW Rubin, EM Chisholm, JW Colvin, PL Parks, JS TI HDLs in apoA-I transgenic Abca1 knockout mice are remodeled normally in plasma but are hypercatabolized by the kidney SO JOURNAL OF LIPID RESEARCH LA English DT Article DE apolipoprotein A-I; ATP binding cassette transporter A1; high density lipoprotein ID HIGH-DENSITY-LIPOPROTEIN; APOLIPOPROTEIN-A-I; PHOSPHOLIPID TRANSFER PROTEIN; CELLULAR CHOLESTEROL EFFLUX; CASSETTE TRANSPORTER 1; TANGIER-DISEASE; HEPATIC LIPASE; SELECTIVE UPTAKE; PEST SEQUENCE; PARTICLE-SIZE AB Patients homozygous for Tangier disease have a near absence of plasma HDL as a result of mutations in ABCA1 and hypercatabolize normal HDL particles. To determine the relationship between ABCA1 expression and HDL catabolism, we investigated intravascular remodeling, plasma clearance, and organ- specific uptake of HDL in mice expressing the human apolipoprotein A- I ( apoA- I) transgene in the Abca1 knockout background. Small HDL particles ( 7.5 nm), radiolabeled with I-125- tyramine cellobiose, were injected into recipient mice to quantify plasma turnover and the organ uptake of tracer. Small HDL tracer was remodeled to 8.2 nm diameter particles within 5 min in human apolipoprotein A- I transgenic ( hA- I-Tg) mice ( control) and knockout mice. Decay of tracer from plasma was 1.6- fold more rapid in knockout mice ( P < 0.05) and kidney uptake was twice that of controls, with no difference in liver uptake. We also observed 2- fold greater hepatic expression of ABCA1 protein in hA-I-Tg mice compared with nontransgenic mice, suggesting that overexpression of human apoA- I stabilized hepatic ABCA1 protein in vivo. We conclude that ABCA1 is not required for in vivo remodeling of small HDLs to larger HDL subfractions and that the hypercatabolism of normal HDL particles in knockout mice is attributable to a selective catabolism of HDL apoA-I by the kidney. C1 Wake Forest Univ, Sch Med, Dept Pathol, Winston Salem, NC 27157 USA. Wake Forest Univ, Sch Med, Dept Orthoped Surg, Winston Salem, NC 27157 USA. EO Lawrence Berkeley Natl Lab, Dept Genome Sci, Berkeley, CA 94720 USA. CV Therapeut Inc, Discovery Res, Palo Alto, CA 94304 USA. Univ Maryland, Sch Med, Div Gerontol, Baltimore, MD 21201 USA. Baltimore Vet Affairs Med Ctr, Ctr Clin, Baltimore, MD 21201 USA. RP Parks, JS (reprint author), Wake Forest Univ, Sch Med, Dept Pathol, Winston Salem, NC 27157 USA. EM jparks@wfubmc.edu FU NHLBI NIH HHS [HL-054176, HL-049373, HL-07115] NR 67 TC 23 Z9 23 U1 0 U2 1 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA SN 0022-2275 J9 J LIPID RES JI J. Lipid Res. PD OCT PY 2005 VL 46 IS 10 BP 2233 EP 2245 DI 10.1197/jlr.M500179-JLR200 PG 13 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 965UE UT WOS:000231975000020 PM 16024913 ER PT J AU Salem-Sugui, S Alvarenga, AD Goretta, KC Vieira, VN Veal, B Paulikas, AP AF Salem-Sugui, S Alvarenga, AD Goretta, KC Vieira, VN Veal, B Paulikas, AP TI A comparative study of high-field diamagnetic fluctuations in deoxygenated YBa2Cu3O7-x and polycrystalline (Bi-Pb)(2)Sr2Ca2Cu3O10 SO JOURNAL OF LOW TEMPERATURE PHYSICS LA English DT Article DE 2D diamagnetic fluctuations; high-T-c-superconductors; high-field diamagnetic fluctuations; 2D lowest-Landau-level; diamagnetic fluctuations ID MAGNETIC-FIELD; II SUPERCONDUCTORS; VORTEX FLUCTUATIONS; THIN-FILMS; TRANSITION; TC; TEMPERATURE; VORTICES; NIOBIUM; PHASE AB We studied three single crystals of YBa2Cu3O7-x, (Y123) with superconducting transition temperature, T-c=62.5, 52, and 41 K, and a highly textured polycrystalline specimen of (Bi-Pb)(2)Sr2Ca2Cu3O10 (Bi2223), with T-c=108K. Isofield magnetization data were obtained as a function of temperature, with the magnetic field applied parallel to the c axis of each sample. The reversible magnetization data for all samples exhibited a rounded transition as magnetization tended toward zero. The reversible data were interpreted in terms of two-dimensional diamagnetic lowest-Landau-level (LLL) fluctuation theory. The LLL scaling analysis yielded consistent values of the superconducting transition temperatures T-c(H) for the various samples. The resulting scaling data were fit well by the two-dimensional LLL expression for magnetization obtained by Tesanovic and colaborators, producing reasonable values of kappa but the fitting parameter theta H-c2/theta T produced values that were larger than the experimentally determined ones. We performed simultaneous scaling of Y123 data and Bi2223, obtaining a single collapsed curve. The single curve was obtained after multiplying the x and y axis of each scaling curve by appropriate sample-dependent scaling factors. An expression for the two-dimensional x-axis LLL scaling was extracted from theory, allowing comparison of theoretical values of the x-axis scaling factors with the experimental values. The comparison between the values of the x-axis produced a deviation of 40% which suggests that the hypothesis of universality of the two-dimensional LLL fluctuations is not supported by the studied samples. We also observe that Y123 magnetization data for temperatures above T-c obbey a universal scaling obtained for the diamagnetic fluctuation magnetization from a theory considering non-local field effects. The same scaling was not obbeyed by the corresponding magnetization calculated from the two-dimensional LLL theory. C1 Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil. Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil. Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. Univ Caxias Sul, Ctr Ciencias Exatas & Tecnol, Caxias Do Sul, RS, Brazil. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Salem-Sugui, S (reprint author), Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil. EM said@if.ufrj.br RI Alvarenga, Ana Paula/M-9790-2014 NR 36 TC 5 Z9 5 U1 0 U2 2 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0022-2291 EI 1573-7357 J9 J LOW TEMP PHYS JI J. Low Temp. Phys. PD OCT PY 2005 VL 141 IS 1-2 BP 83 EP 95 DI 10.1007/s10909-005-7515-y PG 13 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 964LT UT WOS:000231883300004 ER PT J AU Granwehr, J Urban, JT Trabesinger, AH Pines, A AF Granwehr, J Urban, JT Trabesinger, AH Pines, A TI NMR detection using laser-polarized xenon as a dipolar sensor SO JOURNAL OF MAGNETIC RESONANCE LA English DT Article DE NMR; distant dipolar field; long-range dipolar couplings; intermolecular multi-quantum coherences; indirect detection; remote detection; hyperpolarized xenon; sensitivity ID NUCLEAR-MAGNETIC-RESONANCE; MULTIPLE-QUANTUM COHERENCES; HYPERPOLARIZED XE-129; DEMAGNETIZING FIELD; NOBLE-GASES; SURFACE NMR; SPECTROSCOPY; ENHANCEMENT; MRI; DYNAMICS AB Hyperpolarized Xe-129 can be used as a sensor to indirectly detect NMR spectra of heteronuclei that are neither covalently bound nor necessarily in direct contact with the Xe atoms, but coupled through long-range intermolecular dipole-dipole interactions. To reintroduce long-range dipolar couplings the sample symmetry has to be broken. This can be done either by using an asymmetric sample arrangement, or by breaking the symmetry of the spin magnetization with field gradient pulses. Experiments are performed where only a small fraction of the available Xe-129 magnetization is used for each point, so that a single batch of xenon suffices for the point-by-point acquisition of a heteronuclear NMR spectrum. Examples with H-1 as the analyte nucleus show that these methods have the potential to obtain spectra with a resolution that is high enough to determine homonuclear J couplings. The applicability of this technique with remote detection is discussed. Published by Elsevier Inc. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Chem, Div Mat Sci, Berkeley, CA 94720 USA. RP Pines, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Chem, Div Mat Sci, Berkeley, CA 94720 USA. EM pines@cchem.berkeley.edu RI Trabesinger, Andreas/J-2008-2016 OI Trabesinger, Andreas/0000-0003-3078-8399 NR 46 TC 20 Z9 20 U1 0 U2 6 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1090-7807 J9 J MAGN RESON JI J. Magn. Reson. PD OCT PY 2005 VL 176 IS 2 BP 125 EP 139 DI 10.1016/j.jmr.2005.05.013 PG 15 WC Biochemical Research Methods; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Biochemistry & Molecular Biology; Physics; Spectroscopy GA 972AI UT WOS:000232425800001 PM 16005649 ER PT J AU Miller, SF Blau, PJ Shih, AJ AF Miller, SF Blau, PJ Shih, AJ TI Microstructural alterations associated with friction drilling of steel, aluminum, and titanium SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE LA English DT Article DE machining; metallography; optical microscopy; tribology ID TUBULAR COLUMNS; FLOWDRILL CONNECTORS; ROTATIONAL STIFFNESS; STRENGTH AB Friction drilling, also called thermal drilling, is a novel sheet metal hole-making process. The process involves forcing a rotating, pointed tool through a sheet metal workpiece. The frictional heating at the interface between the tool and workpiece enables the softening, deformation, and displacement of work-material and creates a bushing surrounding the hole without generating chip or waste material. The bushing can be threaded and provides the structural support for joining devices to the sheet metal. The research characterizes the microstructures and indentation hardness changes in the friction drilling of carbon steel, alloy steel, aluminum, and titanium. It is shown that materials with different compositions and thermal properties affect the selection of friction drilling process parameters, the surface morphology of the bore, and the development of a highly deformed layer adjacent to the bore surface. C1 Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA. Oak Ridge Natl Lab, Div Ceram, Oak Ridge, TN 37831 USA. RP Blau, PJ (reprint author), Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA. EM blaupj@ornl.gov NR 20 TC 17 Z9 18 U1 1 U2 5 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 USA SN 1059-9495 J9 J MATER ENG PERFORM JI J. Mater. Eng. Perform. PD OCT PY 2005 VL 14 IS 5 BP 647 EP 653 DI 10.1361/105994905X64558 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA 971VK UT WOS:000232412700015 ER PT J AU Clark, TE Love, ST Nitta, M ter Veldhuis, T AF Clark, TE Love, ST Nitta, M ter Veldhuis, T TI AdS(d+1)-> AdS(d) SO JOURNAL OF MATHEMATICAL PHYSICS LA English DT Article ID TENSOR GAUGE-THEORIES; GOLDSTONE SUPERFIELD ACTIONS; PHENOMENOLOGICAL LAGRANGIANS; SUPERCONFORMAL MECHANICS; NONLINEAR REALIZATION; SUPERSYMMETRY; SUPERGRAVITY; SPACE; ANTI; BREAKING AB Coset methods are used to construct the action describing the dynamics of the (massive) Nambu-Goldstone scalar degree of freedom associated with the spontaneous breaking of the isometry group of AdS(d+1) space to that of an AdS(d) subspace. The resulting action is an SO(2,d) invariant AdS generalization of the Nambu-Goto action. The vector field theory equivalent action is also determined. (c) 2005 American Institute of Physics. C1 Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. Macalester Coll, Dept Phys & Astron, St Paul, MN 55105 USA. RP Clark, TE (reprint author), Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA. EM clark@physics.purdue.edu; love@physics.purdue.edu; nitta@th.phys.titech.ac.jp; terveldhuis@macalester.edu NR 53 TC 11 Z9 11 U1 0 U2 0 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 OCT PY 2005 VL 46 IS 10 AR 102304 DI 10.1063/1.2048307 PG 16 WC Physics, Mathematical SC Physics GA 979JN UT WOS:000232938300013 ER PT J AU Sever, DM Hopkins, WA AF Sever, DM Hopkins, WA TI Renal sexual segment of the ground skink, Scincella laterale (Reptilia, Squamata, Scincidae) SO JOURNAL OF MORPHOLOGY LA English DT Article DE Reptilia; Squamata; renal sexual segment; histology; ultra structure ID HEMIDACTYLUS FLAVIVIRIDIS RUPPELL; SPERM STORAGE; KIDNEY; LIZARD; ULTRASTRUCTURE; SIPEDON; SNAKES AB Mature squamates possess hypertrophied regions of the distal urinary ducts, the renal sexual segment (RSS). The RSS is believed to provide seminal fluid that mixes with sperm and is released into the female cloaca during coitus. This study is the first to describe ultrastructure of the RSS in a lizard collected throughout the active season. The species examined, Scincella laterale, represents the largest family (Scincidae: 1,200 species) of lizards. Although sperm are present in the posterior ductus deferens of male S. laterale throughout the year, an annual spermatogenic cycle occurs that results in spermiation in spring, coinciding with maximum development of the RSS. Female S. laterale may possess stored sperm in vaginal crypts from March-May and large oviductal eggs April-June. Thus, the correlation between mating and RSS activity observed in other squamates is also found in S. laterale. Cytologically, the active RSS consists of columnar cells with numerous apical, electron-dense secretory vacuoles which are released by an apocrine process. The granules stain positively for proteins with bromphenol blue and react with PAS for neutral carbohydrates. After the mating season the RSS undergoes recrudescence and the electron-dense granules are replaced by a mucoid secretion that characterizes more proximal portions of the nephric tubules throughout the year. Little variation in ultrastructure of the RSS occurs between S. laterale and Cnemidophorus lemniscatus (Teiidae), the only other lizard in which seasonal variation of the RSS has been studied using similar methods. Females exhibit differentiation similar to that of males in the distal urinary tubules, but to a lesser degree. This is only the second such report for female squamates, and the differentiation of the region in females is proposed to result from adrenal androgens. C1 SE Louisiana Univ, Dept Biol Sci, Hammond, LA 70402 USA. Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29803 USA. RP Sever, DM (reprint author), SE Louisiana Univ, Dept Biol Sci, Hammond, LA 70402 USA. EM dsever@selu.edu NR 28 TC 16 Z9 20 U1 0 U2 0 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0362-2525 J9 J MORPHOL JI J. Morphol. PD OCT PY 2005 VL 266 IS 1 BP 46 EP 59 DI 10.1002/jmor.10364 PG 14 WC Anatomy & Morphology SC Anatomy & Morphology GA 969RV UT WOS:000232253300004 PM 16121401 ER PT J AU Waychunas, GA Kim, CS Banfield, JF AF Waychunas, GA Kim, CS Banfield, JF TI Nanoparticulate iron oxide minerals in soils and sediments: unique properties and contaminant scavenging mechanisms SO JOURNAL OF NANOPARTICLE RESEARCH LA English DT Article DE aggregation/growth; contaminant; ferrihydrite; goethite; hematite; oxide; schwertmannite; sorption colloids; water quality ID HYDROUS FERRIC-OXIDE; MOLECULAR-DYNAMICS SIMULATIONS; ANOMALOUS LATTICE EXPANSION; PHASE-TRANSFORMATION; SURFACE COMPLEXATION; HEMATITE NANOPARTICLES; ORIENTED AGGREGATION; CRYSTAL-GROWTH; FERRIHYDRITE; SORPTION AB Nanoparticulate goethite, akaganeite, hematite, ferrihydrite and schwertmannite are important constituents of soils, sediments and mine drainage outflows. These minerals have high sorption capacities for metal and anionic contaminants such as arsenic, chromium, lead, mercury and selenium. Contaminant sequestration is accomplished mainly by surface complexation, but aggregation of particles may encapsulate sorbed surface species into the multigrain interior interfaces, with significant consequences for contaminant dispersal or remediation processes. Particularly for particle sizes on the order of 1-10 nm, the sorption capacity and surface molecular structure also may differ in important ways from bulk material. We review the factors affecting geochemical reactivity of these nanophases, focusing on the ways they may remove toxins from the environment, and include recent results of studies on nanogoethite growth, aggregation and sorption processes. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA. Chapman Univ, Dept Phys Sci, Orange, CA 92866 USA. RP Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. EM GAWaychunas@lbl.gov NR 86 TC 320 Z9 332 U1 30 U2 253 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1388-0764 EI 1572-896X J9 J NANOPART RES JI J. Nanopart. Res. PD OCT PY 2005 VL 7 IS 4-5 BP 409 EP 433 DI 10.1007/s11051-005-6931-x PG 25 WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 960OF UT WOS:000231602300006 ER PT J AU Shohami, E Alexandrovich, AG Yaka, R Matzner, H Trembovler, V Tsenter, J AF Shohami, E Alexandrovich, AG Yaka, R Matzner, H Trembovler, V Tsenter, J TI Improved functional recovery and regained LTP by delayed activation of NMDA receptors with D-cycloserine following head injury SO JOURNAL OF NEUROTRAUMA LA English DT Meeting Abstract CT 23rd Annual National-Neurotrauma-Society Symposium CY NOV 10-11, 2005 CL Washington, DC SP Natl Neurotrauma Soc C1 Hebrew Univ Jerusalem, Jerusalem, Israel. Hadassah Med Ctr, IL-91120 Jerusalem, Israel. Brookhaven Natl Lab, Upton, NY 11973 USA. RI yu, yan/C-2322-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU MARY ANN LIEBERT INC PI NEW ROCHELLE PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA SN 0897-7151 J9 J NEUROTRAUM JI J. Neurotrauma PD OCT PY 2005 VL 22 IS 10 MA P279 BP 1234 EP 1234 PG 1 WC Critical Care Medicine; Clinical Neurology; Neurosciences SC General & Internal Medicine; Neurosciences & Neurology GA 977ZS UT WOS:000232842600291 ER PT J AU Hrma, P Crum, JV Bates, DJ Bredt, PR Greenwood, LR Smith, HD AF Hrma, P Crum, JV Bates, DJ Bredt, PR Greenwood, LR Smith, HD TI Vitrification and testing of a Hanford high-level waste sample. Part 1: Glass fabrication, and chemical and radiochemical analysis SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article AB The Hanford radioactive tank waste will be separated into low-activity waste and high-level waste that will both be vitrified into borosilicate glasses. To demonstrate the feasibility of vitrification and the durability of the high-level waste glass, a high-level waste sample from Tank AZ-101 was processed to glass, analyzed with respect to chemical composition, radionuclide content, waste loading, and the presence of crystalline phases and then tested for leachability. The glass was analyzed with inductively coupled plasma-atomic emission spectroscopy, inductively coupled plasma-mass spectrometry, gamma-energy spectrometry, alpha-spectrometry, and liquid scintillation counting. The WISE Uranium Project calculator was used to calculate the main sources of radioactivity to the year 3115. The observed crystallinity and the results of leachability testing of the glass will be reported in Part 2 of this paper. (c) 2005 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. RP Hrma, P (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA. EM pavel.hrma@pnl.gov RI Greenwood, Lawrence/H-9539-2016 OI Greenwood, Lawrence/0000-0001-6563-0650 NR 18 TC 10 Z9 10 U1 0 U2 6 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 OCT 1 PY 2005 VL 345 IS 1 BP 19 EP 30 DI 10.1016/j.jnucmat.2005.03.026 PG 12 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 966SI UT WOS:000232041300003 ER PT J AU Hrma, P Crum, JV Bredt, PR Greenwood, LR Arey, BW Smith, HD AF Hrma, P Crum, JV Bredt, PR Greenwood, LR Arey, BW Smith, HD TI Vitrification and testing of a Hanford high-level waste sample. Part 2: Phase identification and waste form leachability SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article ID GLASS CORROSION AB A sample of Hanford high-level radioactive waste from Tank AZ-101 was vitrified into borosilicate glass and tested to demonstrate its compliance with regulatory requirements. Compositional aspects of this study were reported in Part 1 of this paper. This second and last part presents results of crystallinity and leachability testing. Crystallinity was quantified in a glass sample heat treated according to the calculated cooling curve of glass at the centerline of a Hanford Waste Treatment Plant canister. By quantitative X-ray diffraction analysis and image analysis applied to scanning electron microscopy micrographs, the sample contained 7 mass% of spinel, a solid solution of franklinite, trevorite, and other minor spinels. Glass leachability was measured with the product consistency test and the toxicity characteristic leaching procedure. Measured data and model estimates were in reasonable agreement. Leachability results were close to those obtained for the non-radioactive simulant. Models were used to elucidate the effects of glass composition of spinel formation and to estimate effects of spinel formation on glass leachability. (c) 2005 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. RP Hrma, P (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA. EM pavel.hrma@pnl.gov RI Greenwood, Lawrence/H-9539-2016 OI Greenwood, Lawrence/0000-0001-6563-0650 NR 19 TC 9 Z9 9 U1 0 U2 2 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 OCT 1 PY 2005 VL 345 IS 1 BP 31 EP 40 DI 10.1016/j.jnucmat.2005.03.025 PG 10 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 966SI UT WOS:000232041300004 ER PT J AU Wu, Y Zhang, XZ Xiong, ZM Cheng, Z Fisher, DR Liu, S Gambhir, SS Chen, XY AF Wu, Y Zhang, XZ Xiong, ZM Cheng, Z Fisher, DR Liu, S Gambhir, SS Chen, XY TI microPET imaging of glioma integrin alpha(V)beta(3) expression using Cu-64-labeled tetrameric RGD peptide SO JOURNAL OF NUCLEAR MEDICINE LA English DT Article DE tumor angiogenesis; integrin; RGD peptide; microPET; multimeric peptide; Cu-64 ID CANCER ALPHA(V)-INTEGRIN EXPRESSION; TUMOR ANGIOGENESIS; INTEGRIN ALPHA(V)BETA(3); VITRONECTIN RECEPTOR; BRAIN-TUMORS; IN-VIVO; ALPHA-V-BETA-3; PHARMACOKINETICS; DOSIMETRY; TRACERS AB Integrin alpha(v)beta(3) plays a critical role in tumor-induced angiogenesis and metastasis and has become a promising diagnostic indicator and therapeutic target for various solid tumors. Radiolabeled RGD peptides that are integrin specific can be used for noninvasive imaging of integrin expression level as well as for integrin-targeted radionuclide therapy. Methods: In this study we developed a tetrameric RGD peptide tracer Cu-64-DOTA-E{E[c(RGDfK)](2)}(2) (DOTA is 1,4,7,10-tetraazacyclododecane-N,N',N '',N'''-tetraacetic acid) for PET imaging of integrin alpha(v)beta(3) expression in female athymic nude mice bearing the subcutaneous UG87MG glioma xenografts. Results: The RGD tetramer showed significantly higher integrin binding affinity than the corresponding monomeric and dimeric RGD analogs, most likely due to a polyvalency effect. The radiolabeled peptide showed rapid blood clearance (0.61 +/- 0.01 %ID/g at 30 min and 0.21 +/- 0.01 %ID/g at 4 h after injection, respectively [%ID/g is percentage injected dose per gram]) and predominantly renal excretion. Tumor uptake was rapid and high, and the tumor washout was slow (9.93 +/- 1.05 %ID/g at 30 min after injection and 4.56 +/- 0.51 %ID/g at 24 h after injection). The metabolic stability of Cu-64-DOTA-E{E[c(RGDfK)1212 was determined in mouse blood, urine, and liver and kidney homogenates at different times after tracer injection. The average fractions of intact tracer in these organs at 1 h were approximately 70%, 58%, 51%, and 26%, respectively. Noninvasive microPET studies showed significant tumor uptake and good contrast in the subcutaneous tumor-bearing mice, which agreed well with the biodistribution results. Integrin alpha(v)beta(3) specificity was demonstrated by successful blocking of tumor uptake of Cu-64-DOTA-E{E[c(RGDfK)}(2)](2) in the presence of excess c(RGDyK) at 1 h after injection. The highest absorbed radiation doses determined for the human reference adult were received by the urinary bladder wall (0.262 mGy/MBq), kidneys (0.0296 mGy/MBq), and liver (0.0242 mGy/MBq). The average effective dose resulting from a single Cu-64-DOTA-E{E[c(RGDfK)](2)}(2) injection was estimated to be 0.0164 mSv/MBq. Conclusion: The high integrin and avidity and favorable biokinetics make Cu-64-DOTA-E{E[c(RGDfK)}(2)](2) a promising agent for peptide receptor radionuclide imaging and therapy of integrin-positive tumors. C1 Stanford Univ, Mol Imaging Program Stanford MIPS, Dept Radiol, Stanford, CA 94305 USA. Stanford Univ, Bio X Program, Stanford, CA 94305 USA. Pacific NW Natl Lab, Radioisotopes Program, Richland, WA USA. Purdue Univ, Sch Hlth Sci, W Lafayette, IN 47907 USA. RP Chen, XY (reprint author), Stanford Univ, Mol Imaging Program Stanford MIPS, Dept Radiol, 1201 Welch Rd,P095, Stanford, CA 94305 USA. EM shawchen@stanford.edu RI Cheng, Zhen/K-2843-2012; Liu, Sheng/K-2815-2013; Zhang, Xianzhong/A-7754-2012 OI Zhang, Xianzhong/0000-0002-1001-1884 FU NCI NIH HHS [R24 CA86307, R24 CA93862]; NIBIB NIH HHS [R21 EB001785] NR 40 TC 259 Z9 274 U1 7 U2 34 PU SOC NUCLEAR MEDICINE INC PI RESTON PA 1850 SAMUEL MORSE DR, RESTON, VA 20190-5316 USA SN 0161-5505 J9 J NUCL MED JI J. Nucl. Med. PD OCT PY 2005 VL 46 IS 10 BP 1707 EP 1718 PG 12 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 972KM UT WOS:000232452700033 PM 16204722 ER PT J AU Hurwitz, J Feng, WC AF Hurwitz, J Feng, WC TI Analyzing MPI performance over 10-Gigabit ethernet SO JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING LA English DT Article DE OGbE; Ethernet; MPI; SAN; interconnect; cluster AB Recent work with 10-Gigabit (10GbE) network adapters has demonstrated good performance in TCP/IP-based local- and wide-area networks (LANs and WANs). In the present work we present an evaluation of host-based 10GbE adapters in a system-area network (SAN) in support of a cluster. This evaluation focuses on the performance of the message-passing interface (MPI) when running over a 10GbE interconnect. We find that MPI over 10GbE provides communications performance comparable to that of TCP alone and fairly competitive with more exotic technologies such as MPI over Quadrics. The optimization of MPI and MPI-based applications to make use of this performance, however, is a non-trivial task. Consequently, it is difficult for MPI-based applications to realize this performance when running current-generation 10GbE hardware. Published by Elsevier Inc. C1 Los Alamos Natl Lab, RADIANT, Comp & Computat Sci Div, Los Alamos, NM 87545 USA. RP Hurwitz, J (reprint author), Los Alamos Natl Lab, RADIANT, Comp & Computat Sci Div, MS D-451, Los Alamos, NM 87545 USA. EM ghurwitz@lanl.gov; feng@lanl.gov NR 9 TC 2 Z9 5 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0743-7315 J9 J PARALLEL DISTR COM JI J. Parallel Distrib. Comput. PD OCT PY 2005 VL 65 IS 10 BP 1253 EP 1260 DI 10.1016/j.jpdc.2005.04.011 PG 8 WC Computer Science, Theory & Methods SC Computer Science GA 964NX UT WOS:000231888900012 ER PT J AU Zhang, X Bhuyan, LN Feng, WC AF Zhang, X Bhuyan, LN Feng, WC TI Anatomy of UDP and M-VIA for cluster communication SO JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING LA English DT Article DE cluster communication; TCP/UDP/IP; Virtual Interface Architecture (VIA); measurement; performance evaluation AB High interprocess communication latency is detrimental to parallel and and computing. Over the years, the network bandwidth has increased rapidly while the end-to-end latency has not decreased much. This is because the latency is dominated by the protocol software execution time in the kernel instead of the raw transmission time over the link. In this paper, we perform an anatomical analysis of the complete communication path between a sender and a receiver through measurements. We present an in-depth evaluation of various components of the UDP protocol over Fast Ethernet. Virtual Interface Architecture (VIA) protocol has been recently proposed to overcome the software overhead of the TCP/UDP/IP protocol. We analyze M-VIA, a modular VIA implementation for Linux over Ethernet, and compare its performance with UDP. The aim of our experiments is to present the protocol overheads in details rather than to suggest new techniques to reduce overheads. (c) 2005 Elsevier Inc. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Calif Riverside, Dept Comp Sci & Engn, Riverside, CA 92521 USA. RP Feng, WC (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM xzhang@cs.ucr.edu; bhuyan@cs.ucr.edu; feng@lanl.gov NR 15 TC 5 Z9 5 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0743-7315 J9 J PARALLEL DISTR COM JI J. Parallel Distrib. Comput. PD OCT PY 2005 VL 65 IS 10 BP 1290 EP 1298 DI 10.1016/j.jpdc.2005.04.009 PG 9 WC Computer Science, Theory & Methods SC Computer Science GA 964NX UT WOS:000231888900016 ER PT J AU Clerc, DG Ledbetter, H AF Clerc, DG Ledbetter, H TI Second-order and third-order elastic properties of diamond: An ab initio study SO JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS LA English DT Article DE ceramics; ab initio calculations; anelasticity; elasticity; mechanical properties ID INHOMOGENEOUS ELECTRON-GAS; CORRELATION-ENERGY; EXPANSION; BRILLOUIN; SYSTEMS; MODEL; GE; SI AB Diamond's second-order elastic properties, and several third-order properties associated with uniform deformation, were calculated using ab initio all-electron density-functional theory. The predicted second-order elastic properties and equilibrium lattice parameter, in units of GPa and nm, are c(11) = 1043(5), c(12) = 128(5), c(44) = 534(17), bulk modulus B = 433(5), shear modulus G = 502(10), Poisson ratio mu = 0.082(5), and a = 0.35569(2), where the parenthetic number is the uncertainty. The second-order force constants, in units of GPa, are k(1) = 3843(108), k(II) = 2346(17), k(III) = 2847(35), and k(IV) = 5635(45). Here, subscripts I-IV denote four strains whose tensor elements are [epsilon, epsilon, epsilon, 0, 0, 0], [epsilon, epsilon, 0, 0, 0, 01, [epsilon, epsilon, -epsilon, 0, 0, 0], and [epsilon, epsilon, epsilon, epsilon, epsilon, epsilon], respectively, using 6-component notation in the format [epsilon(1), epsilon(2), epsilon(3), epsilon(4), epsilon(5), epsilon(6)]. Predicted inelastic properties include the third-order force constant corresponding to uniform dilation g(1) = -55,000(3,500) GPa, the bulk-modulus pressure derivative delta B/delta P=4.7(3), and the overall Gruneisen parameter gamma(G) =0.85(15). Both our second-order and third-order properties agree well with measured values obtained by ultrasonics and by Raman spectroscopy. (c) 2005 Elsevier Ltd. All rights reserved. C1 ArTek Prod Dev Inc, Red Bud, IL 62278 USA. Univ Calif Los Alamos Natl Lab E536, Los Alamos, NM 87545 USA. RP ArTek Prod Dev Inc, POB 212, Red Bud, IL 62278 USA. EM proddev@artek1.com NR 33 TC 4 Z9 4 U1 0 U2 8 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0022-3697 EI 1879-2553 J9 J PHYS CHEM SOLIDS JI J. Phys. Chem. Solids PD OCT PY 2005 VL 66 IS 10 BP 1589 EP 1597 DI 10.1016/j.jpcs.2005.05.075 PG 9 WC Chemistry, Multidisciplinary; Physics, Condensed Matter SC Chemistry; Physics GA 998RT UT WOS:000234337700001 ER PT J AU Andgren, K Ashley, SF Regan, PH McCutchan, EA Zamfir, NV Amon, L Cakirli, RB Casten, RF Clark, RM Gurdal, G Keyes, KL Meyer, DA Erduran, MN Papenberg, A Pietralla, N Plettner, C Rainovski, G Ribas, RV Thomas, NJ Vinson, J Warner, DD Werner, V Williams, E AF Andgren, K Ashley, SF Regan, PH McCutchan, EA Zamfir, NV Amon, L Cakirli, RB Casten, RF Clark, RM Gurdal, G Keyes, KL Meyer, DA Erduran, MN Papenberg, A Pietralla, N Plettner, C Rainovski, G Ribas, RV Thomas, NJ Vinson, J Warner, DD Werner, V Williams, E TI RDM lifetime measurements in Cd-107 SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID DECAY CURVE METHOD; ROTATIONAL BANDS; STATES; ISOTOPES; MOMENTS; NUCLEI AB Lifetimes for decays linking near-yrast states in Cd-107 have been measured using the recoil distance method (RDM). The nucleus of interest was populated via the (MO)-M-98(C-12,3n)(107) Cd fusion-evaporation reaction at an incident beam energy of 60 MeV. From the measured lifetimes, transition probabilities have been deduced and compared with the theoretical B(E2) values for limiting cases of harmonic vibrational and axially deformed rotational systems. Our initial results suggest a rotor-like behaviour for the structure based on the unnatural-parity, h(11/2) orbital in Cd-107, providing further evidence for the role of this 'shape-polanzing' orbital in stabilizing the nuclear deformation in the A similar to 100 transitional region. C1 Royal Inst Technol, Dept Phys, S-10405 Stockholm, Sweden. Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England. Yale Univ, WNSL, New Haven, CT 06520 USA. Istanbul Univ, Dept Phys, Istanbul, Turkey. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Clark Univ, Worcester, MA 01610 USA. Univ Paisley, Phys Res Inst, Paisley PA1 2BE, Renfrew, Scotland. SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil. SERC, Daresbury Lab, CCLRC, Warrington WA4 4AD, Cheshire, England. RP Andgren, K (reprint author), Royal Inst Technol, Dept Phys, S-10405 Stockholm, Sweden. RI Zamfir, Nicolae Victor/F-2544-2011; Ribas, Roberto/B-8952-2013; Williams, Elizabeth/D-3442-2014; Rainovski, Georgi/A-3450-2008; Werner, Volker/C-1181-2017; OI Rainovski, Georgi/0000-0002-1729-0249; Werner, Volker/0000-0003-4001-0150; Ashley, Stephen/0000-0001-5139-2209 NR 32 TC 4 Z9 4 U1 1 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD OCT PY 2005 VL 31 IS 10 SI SI BP S1563 EP S1568 DI 10.1088/0954-3899/31/10/033 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600035 ER PT J AU Ball, GC Achtzehn, T Albers, D Al Khalili, JS Andreoiu, C Andreyev, A Ashley, SF Austin, RAE Becker, JA Bricault, P Chan, S Chakrawarthy, RS Churchman, R Coombes, H Cunningham, ES Daoud, J Dombsky, M Drake, TE Eshpeter, B Finlay, P Garrett, PE Geppert, C Grinyer, GF Hackman, G Hanemaayer, V Hyland, B Jones, GA Koopmans, KA Kulp, WD Lassen, J Lavoie, JP Leslie, JR Litvinov, Y Macdonald, JA Mattoon, C Melconian, D Morton, AC Osborne, CJ Pearson, CJ Pearson, M Phillips, AA Ressler, JJ Sarazin, F Schumaker, MA Schwarzenberg, J Scraggs, HC Smith, MB Svensson, CE Valiente-Dobon, JJ Waddington, JC Walker, PM Wendt, K Williams, SJ Wood, JL Zganjar, EF AF Ball, GC Achtzehn, T Albers, D Al Khalili, JS Andreoiu, C Andreyev, A Ashley, SF Austin, RAE Becker, JA Bricault, P Chan, S Chakrawarthy, RS Churchman, R Coombes, H Cunningham, ES Daoud, J Dombsky, M Drake, TE Eshpeter, B Finlay, P Garrett, PE Geppert, C Grinyer, GF Hackman, G Hanemaayer, V Hyland, B Jones, GA Koopmans, KA Kulp, WD Lassen, J Lavoie, JP Leslie, JR Litvinov, Y Macdonald, JA Mattoon, C Melconian, D Morton, AC Osborne, CJ Pearson, CJ Pearson, M Phillips, AA Ressler, JJ Sarazin, F Schumaker, MA Schwarzenberg, J Scraggs, HC Smith, MB Svensson, CE Valiente-Dobon, JJ Waddington, JC Walker, PM Wendt, K Williams, SJ Wood, JL Zganjar, EF TI High-resolution gamma-ray spectroscopy: a versatile tool for nuclear beta-decay studies at TRIUMF-ISAC SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID HALF-LIFE MEASUREMENT; NE-18 AB High-resolution gamma-ray spectroscopy is essential to fully exploit the unique, high-quality beams available at the next generation of radioactive ion beam facilities such as the TRIUMF isotope separator and accelerator (ISAC). The 8 pi spectrometer, which consists of 20 Compton-suppressed HPGe detectors, has recently been reconfigured for a vigorous research programme in weak interaction and nuclear structure physics. With the addition of a variety of ancillary detectors it has become the world's most powerful device dedicated to beta-decay studies. This paper provides a brief overview of the apparatus and highlights from recent experiments. C1 TRIUMF, Vancouver, BC V6T 2A3, Canada. Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England. Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. St Marys Univ, Dept Phys & Astron, Halifax, NS B3H 3C3, Canada. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany. McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA. Univ Laval, Dept Phys, Quebec City, PQ G1K 7P4, Canada. Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada. GSI Darmstadt, D-642901 Darmstadt, Germany. Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada. Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada. Univ Vienna, Dept Nucl Phys, A-1090 Vienna, Austria. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. RP TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada. RI Ressler, Jennifer Jo/F-2279-2010; Wendt, Klaus/D-7306-2011; Melconian, Dan/A-1331-2011; Morton, Colin/K-1561-2015; OI Wendt, Klaus/0000-0002-9033-9336; Melconian, Dan/0000-0002-0142-5428; Morton, Colin/0000-0003-0214-7551; Ashley, Stephen/0000-0001-5139-2209; Smith, Martin/0000-0003-0834-1574 NR 20 TC 34 Z9 34 U1 1 U2 6 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 OCT PY 2005 VL 31 IS 10 SI SI BP S1491 EP S1498 DI 10.1088/0954-3899/31/10/019 PG 8 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600021 ER PT J AU Blackmon, JC AF Blackmon, JC CA RIBENS Collaboration TI Spectroscopy with radioactive ion beams at the HRIBF for nuclear astrophysics SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID SCATTERING AB Proton elastic scattering, proton inelastic scattering, proton transfer reactions and the (d,p) neutron transfer reaction have been measured in inverse kinematics with radioactive ion beams at the HRIBF to determine the properties of nuclear excited states that are important in stellar explosions. The experimental techniques and some initial results are briefly summarized. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Blackmon, JC (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. NR 21 TC 2 Z9 2 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD OCT PY 2005 VL 31 IS 10 SI SI BP S1405 EP S1411 DI 10.1088/0954-3899/31/10/004 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600006 ER PT J AU Carpenter, MP Kondev, FG Janssens, RVF AF Carpenter, MP Kondev, FG Janssens, RVF TI Studies of neutron-deficient nuclei near the Z=82 shell closure via cold fusion reactions SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID SHAPE COEXISTENCE; EXCITED STRUCTURES; STATES AB We have recently performed in-beam experiments using Gammasphere + FMA to measure excited states in proton-rich Au, Hg, TI and Pb isotopes. In these studies, the use of the FMA is essential in order to differentiate evaporation residues from the large fission background which dominates the reaction cross-section. In addition, we have found that using near-symmetric reactions at bombarding energies near the Coulomb barrier is beneficial in performing these studies. By keeping the bombarding energy low, fission is minimized and the reaction products are concentrated in only a few channels. New results have recently been obtained using the 90Zr+ 92 Mo reaction to study (TI)-T-181 and Pb-181 via the 1p and 1n channels, respectively. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 7 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 EI 1361-6471 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD OCT PY 2005 VL 31 IS 10 SI SI BP S1599 EP S1604 DI 10.1088/0954-3899/31/10/040 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600042 ER PT J AU Escher, J Ahle, L Bernstein, L Burke, J Church, JA Dietrich, F Forssen, C Gueorguiev, V Hoffman, R AF Escher, J Ahle, L Bernstein, L Burke, J Church, JA Dietrich, F Forssen, C Gueorguiev, V Hoffman, R TI Surrogate nuclear reactions: an indirect method for determining reaction cross sections SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID ACTINIDE NUCLEI; FISSION AB An indirect method for determining cross sections of reactions proceeding through a compound nucleus is presented. Some applications of the Surrogate nuclear reaction approach a e considered and challenges that need to be addressed are outlined. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Escher, J (reprint author), Lawrence Livermore Natl Lab, POB 808,L-414, Livermore, CA 94551 USA. EM escher1@llnl.gov RI Forssen, Christian/C-6093-2008; Escher, Jutta/E-1965-2013; Gueorguiev, Vesselin/A-9679-2009 OI Forssen, Christian/0000-0003-3458-0480; Gueorguiev, Vesselin/0000-0002-2022-6432 NR 8 TC 11 Z9 12 U1 2 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD OCT PY 2005 VL 31 IS 10 SI SI BP S1687 EP S1690 DI 10.1088/0953-3899/31/10/054 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600056 ER PT J AU Freeman, SJ Janssens, RVF Deacon, AN Xu, F Calderin, IJ Carpenter, MP Chowdhury, P Fischer, SM Hammond, NJ Honma, M Lauritsen, T Lister, CJ Lkhoo, T Mukherjee, G Seweryniak, D Smith, JF Tabor, SL Varley, BJ Zhu, S AF Freeman, SJ Janssens, RVF Deacon, AN Xu, F Calderin, IJ Carpenter, MP Chowdhury, P Fischer, SM Hammond, NJ Honma, M Lauritsen, T Lister, CJ Lkhoo, T Mukherjee, G Seweryniak, D Smith, JF Tabor, SL Varley, BJ Zhu, S TI Structure of the neutron-rich Cr isotopes SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey AB The low-lying levels in Cr-51,Cr-60 have been populated with C-13,C-14(Ca-48, 2p) reactions using a beam energy of 130 MeV. Prompt electromagnetic radiation was detected using the Gammasphere array, in coincidence with recoiling ions measured with the Fragment Mass Analyzer. The residues were selected and identified on the basis of charge-to-mass ratio, energy-loss and time-of-flight measurements. Preliminary results for Cr-60, when compared to lighter even-even isotopes, indicate a softness in shape which increases with neutron number. The low-lying structure of Cr-59 is clearly inconsistent with the results of a spherical shell-model calculation and requires the inclusion of the nu g(9/2) orbital. The sequence of states can be understood within the Nilsson model assuming a moderate oblate ground-state deformation. This is in contrast to lighter odd-Cr nuclei where there is evidence for prolate deformation after excitation Of g(9/2) neutrons. C1 Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England. Argonne Natl Lab, Argonne, IL 60439 USA. Peking Univ, Beijing 100871, Peoples R China. Univ Aizu, Fukushima 9658580, Japan. Florida State Univ, Tallahassee, FL 32306 USA. Univ Massachusetts, Lowell, MA 01854 USA. Depaul Univ, Chicago, IL 60604 USA. RP Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England. EM sjf@mags.ph.man.ac.uk RI Freeman, Sean/B-1280-2010; Xu, Furong/K-4178-2013; Carpenter, Michael/E-4287-2015; OI Freeman, Sean/0000-0001-9773-4921; Carpenter, Michael/0000-0002-3237-5734; Hammond, Neil/0000-0001-6390-8874 NR 12 TC 6 Z9 6 U1 1 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 OCT PY 2005 VL 31 IS 10 SI SI BP S1465 EP S1470 DI 10.1088/0954-3899/31/10/015 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600017 ER PT J AU Garrett, PE Kulp, WD Wood, JL Bandyopadhyay, D Christen, S Choudry, S Dewald, A Fitzler, A Fransen, C Jessen, K Jolie, J Kloezer, A Kudejova, P Kumar, A Lesher, SR Linnemann, A Lisetskiy, A Martin, D Masur, M McEllistrem, MT Moller, O Mynk, M Orce, JN Pejovic, P Pissulla, T Regis, JM Schiller, A Tonev, D Yates, SW AF Garrett, PE Kulp, WD Wood, JL Bandyopadhyay, D Christen, S Choudry, S Dewald, A Fitzler, A Fransen, C Jessen, K Jolie, J Kloezer, A Kudejova, P Kumar, A Lesher, SR Linnemann, A Lisetskiy, A Martin, D Masur, M McEllistrem, MT Moller, O Mynk, M Orce, JN Pejovic, P Pissulla, T Regis, JM Schiller, A Tonev, D Yates, SW TI Octupole and hexadecapole bands in Sm-152 SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID EVEN-EVEN NUCLEI; T,P REACTION; ISOTOPES; STATES; COEXISTENCE AB The nucleus (SM)-S-152 is characterized by a variety of low-energy collective modes, conventionally described as rotations,beta vibrations and gamma vibrations. Recently, it has been suggested that (SM)-S-152 is at a critical point between spherical and deformed collective phases. Consequently, (SM)-S-152 is being studied by a variety of techniques, including radioactive decay, multi-step Coulomb excitation, in-beam (alpha, 2n gamma) gamma-ray spectroscopy and (n, n'gamma) spectroscopy. The present work focuses on the latter two reactions; these have been used to investigate the low-lying bands associated with the octupole degree of freedom, including one built on the first excited 0(+) band. In addition, the K-pi = 4(+) hexadecapole vibrational band has been identified. C1 Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. TRIUMF, Vancouver, BC V6T 2A3, Canada. Lawrence Livermore Natl Lab, Livermore, CA USA. Georgia Inst Technol, Dept Phys, Atlanta, GA 30332 USA. Univ Cologne, Inst Kernphys, Cologne, Germany. Univ Kentucky, Lexington, KY USA. RP Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. EM pgartett@physics.uoguelph.ca RI Dewald, Alfred/O-5810-2015; OI Kudejova, Petra/0000-0003-1485-3672 NR 32 TC 10 Z9 10 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 OCT PY 2005 VL 31 IS 10 SI SI BP S1855 EP S1858 DI 10.1088/0954-3899/31/10/087 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600089 ER PT J AU Gomi, T Motobayashi, T Ando, Y Aoi, N Baba, H Demichi, K Elekes, Z Fukuda, N Fulop, Z Futakami, U Hasegawa, H Higurashi, Y Ieki, K Imai, N Ishihara, M Ishikawa, K Iwasa, N Iwasaki, H Kanno, S Kondo, Y Kubo, T Kubono, S Kunibu, M Kurita, K Matsuyama, YU Michimasa, S Minemura, T Miura, M Murakami, H Nakamura, T Notani, M Ota, S Saito, A Sakurai, H Serata, M Shimoura, S Sugimoto, T Takeshita, E Takeuchi, S Togano, Y Ue, K Yamada, K Yanagisawa, Y Yoneda, K Yoshida, A AF Gomi, T Motobayashi, T Ando, Y Aoi, N Baba, H Demichi, K Elekes, Z Fukuda, N Fulop, Z Futakami, U Hasegawa, H Higurashi, Y Ieki, K Imai, N Ishihara, M Ishikawa, K Iwasa, N Iwasaki, H Kanno, S Kondo, Y Kubo, T Kubono, S Kunibu, M Kurita, K Matsuyama, YU Michimasa, S Minemura, T Miura, M Murakami, H Nakamura, T Notani, M Ota, S Saito, A Sakurai, H Serata, M Shimoura, S Sugimoto, T Takeshita, E Takeuchi, S Togano, Y Ue, K Yamada, K Yanagisawa, Y Yoneda, K Yoshida, A TI Coulomb dissociation experiment for explosive hydrogen burning: study of the Mg-22(p, gamma)Al-23 reaction SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID RADIOACTIVE BEAM; CROSS-SECTION; LOW ENERGIES; BREAK-UP; B-8; NOVA; MEV/NUCLEON AB By taking advantage of the, high efficiency of the Coulomb dissociation method, we studied the stellar Mg-22(p, gamma)Al-23 reaction. The radiative width Gamma gamma of the first excited state in Al-23 was determined by measuring the intermediate-energy Al-23 -> Mg-22 + p breakup process with a lead target. C1 Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan. Hungarian Acad Sci, Inst Nucl Res, ATOMKI, H-4001 Debrecen, Hungary. Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. Argonne Natl Lab, Argonne, IL 60439 USA. Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. Michigan State Univ, Natl Supercond Cyclotron Lab, E Lansing, MI 48824 USA. RI Fulop, Zsolt/B-2262-2008; Shimoura, Susumu/E-8692-2012; Elekes, Zoltan/J-4531-2012; SAKURAI, HIROYOSHI/G-5085-2014; Nakamura, Takashi/N-5390-2015; Takeuchi, Satoshi/O-1529-2016; OI Shimoura, Susumu/0000-0003-4741-2865; Nakamura, Takashi/0000-0002-1838-9363; Elekes, Zoltan/0000-0003-0571-8719 NR 19 TC 4 Z9 4 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD OCT PY 2005 VL 31 IS 10 SI SI BP S1517 EP S1521 DI 10.1088/0954-3899/31/10/023 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600025 ER PT J AU Gross, CJ AF Gross, CJ TI Recent results at HRIBF using neutron-rich radioactive ion beams SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID FUSION PROBABILITY; SUBBARRIER FUSION; NUCLEI; ENHANCEMENT; HALO; HE-6 AB Several recent experiments at the Holifield Radioactive Ion Beam Facility using neutron-rich radioactive ion beams. (RIBs) are briefly described. These experiments contribute significantly to the growing list of techniques currently used with RIBs. Recent fusion-evaporation cross-section measurements below the Coulomb barrier for the (132)Sri + Ni-64 reaction suggest enhancement as compared to (124)Sri + Ni-64 reaction. These studies are being expanded to include reactions with (134)Sri. The g factor of the first 2(+) state in Te-132 has been measured to be 0.35(5) through the recoil-in-vacuum technique. Angular distributions have been measured in the reaction C-13(Te-134,Te-135)C-12 at 550 MeV and used to suggest the spin and parity of a new 2109 keV state in Te-135 as 13/2(+), suggesting a single-particle configuration of i 13/2. Decay spectroscopy may be further enhanced using a ranging-out technique to reduce the isobaric impurity of neutron-rich beams. (Some figures in this article are in colour only in the electronic version). C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Gross, CJ (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. NR 22 TC 4 Z9 4 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD OCT PY 2005 VL 31 IS 10 SI SI BP S1639 EP S1645 DI 10.1088/0954-3899/31/10/047 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600049 ER PT J AU Gurdal, G Amro, H Beausang, CW Brenner, DS Carpenter, MP Casten, RF Engelhardt, C Hagemann, GB Hansen, CR Hartley, DJ Herskind, B Hubel, H Khoo, TL Lauritsen, T Ma, WC Meyer, DA Moore, EF Neusser, A Bringel, P Roux, DG Sletten, G Yadav, RB Zhang, Y AF Gurdal, G Amro, H Beausang, CW Brenner, DS Carpenter, MP Casten, RF Engelhardt, C Hagemann, GB Hansen, CR Hartley, DJ Herskind, B Hubel, H Khoo, TL Lauritsen, T Ma, WC Meyer, DA Moore, EF Neusser, A Bringel, P Roux, DG Sletten, G Yadav, RB Zhang, Y TI Quadrupole moment measurements of TSD1 and TSD2 bands in Lu-167 SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey AB The triaxial strongly deformed (TSD) bands in Lu-167 were populated by the Sb-123(Ca-48, 4n) reaction with a beam energy of 203 MeV. Gamma rays, requiring five fold or more in prompt coincidence, were detected with the Gammasphere spectrometer. Of particular interests are TSD bands 1 and 2 which have previously been interpreted as zero phonon and one phonon wobbling bands, respectively. Using the Doppler shift attenuation method (DSAM), a preliminary transition quadrupole moment of 6.9(-0.3)(+0.3) eb was extracted for the TSD1 band. Data analysis continues for TSD2 which is considerably more weakly populated. C1 Yale Univ, WNSL, New Haven, CT 06520 USA. Clark Univ, Worcester, MA 01610 USA. Univ Richmond, Richmond, VA 23173 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Bonn, HISKP, D-53115 Bonn, Germany. Niels Bohr Inst, DK-2100 Copenhagen, Denmark. USN Acad, Annapolis, MD 21402 USA. Mississippi State Univ, Mississippi State, MS 39762 USA. RP Yale Univ, WNSL, New Haven, CT 06520 USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 11 TC 4 Z9 4 U1 1 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 OCT PY 2005 VL 31 IS 10 SI SI BP S1873 EP S1876 DI 10.1088/0954-3899/31/10/091 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600093 ER PT J AU Mason, P Benzoni, G Bracco, A Camera, F Million, B Wieland, O Leoni, S Singh, AK Al-Khatib, A Hubel, H Bringel, P Burger, A Neusser, A Schonwasser, G Hagemann, GB Hansen, CR Herskind, B Sletten, G Algora, A Dombradi, Z Gal, J Kalinka, G Molnar, J Nyako, BM Sohler, D Timar, J Zolnai, L Kmiecik, M Maj, A Styczen, J Zuber, K Azaiez, F Hauschild, K Korichi, A Lopez-Martens, A Roccaz, J Siem, S Hannachi, F Scheurer, JN Bednarczyk, P Byrski, T Curien, D Dorvaux, O Duchene, G Gall, B Khalfallah, F Piqueras, I Robin, J Juhasz, K Patel, SB Evans, AO Rainovski, G Petrache, CM Petrache, D La Rana, G Moro, R De Angelis, G Fallon, P Lee, IY Lisle, JC Cederwall, B Lagergen, K Lieder, RM Podsvirova, E Gast, W Jager, H Redon, N Gorgen, A AF Mason, P Benzoni, G Bracco, A Camera, F Million, B Wieland, O Leoni, S Singh, AK Al-Khatib, A Hubel, H Bringel, P Burger, A Neusser, A Schonwasser, G Hagemann, GB Hansen, CR Herskind, B Sletten, G Algora, A Dombradi, Z Gal, J Kalinka, G Molnar, J Nyako, BM Sohler, D Timar, J Zolnai, L Kmiecik, M Maj, A Styczen, J Zuber, K Azaiez, F Hauschild, K Korichi, A Lopez-Martens, A Roccaz, J Siem, S Hannachi, F Scheurer, JN Bednarczyk, P Byrski, T Curien, D Dorvaux, O Duchene, G Gall, B Khalfallah, F Piqueras, I Robin, J Juhasz, K Patel, SB Evans, AO Rainovski, G Petrache, CM Petrache, D La Rana, G Moro, R De Angelis, G Fallon, P Lee, IY Lisle, JC Cederwall, B Lagergen, K Lieder, RM Podsvirova, E Gast, W Jager, H Redon, N Gorgen, A TI Octupole signatures in Ba-124,Ba-125 SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID GAMMA-RAY SPECTROSCOPY; SPECTROMETER; EUROBALL; NUCLEI; STATES AB The gamma decay of the nuclei Ba-121,Ba-125 has been investigated with the EUROBALL array, using the reaction Ni-64+Ni-64 at E-beam = 255 and 261 MeV. Six new E1 transitions have been found in the nucleus Ba-125, suggesting a significant role of octupole correlations in the origin of its parity doublets. The J(pi) = 3(-) level of the nucleus Ba-124 has been identified for the first time. Its excitation energy is in very good agreement with a prediction based on a microscopic model including octupole interactions. C1 Univ Milan, Dipartimento Fis, I-20122 Milan, Italy. Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy. Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-5300 Bonn, Germany. Niels Bohr Inst, DK-2100 Copenhagen, Denmark. Hungarian Acad Sci, Inst Nucl Res, Debrecen, Hungary. PAN, H Niewodniczanski Inst Nucl Phys, Krakow, Poland. CNRS, CSNSM Orsay, IN2P3, F-91405 Orsay, France. Ctr Etud Nucl Bordeaux Gradignan, Gradignan, France. CNRS, Inst Rech Subatom, IN2P3, Strasbourg, France. Univ Debrecen, Fac Informat, H-4012 Debrecen, Hungary. Univ Bombay, Dept Phys, Bombay 400032, Maharashtra, India. Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England. Univ Camerino, Dipartimento Fis, I-62032 Camerino, Italy. Ist Nazl Fis Nucl, Camerino, Italy. Ist Nazl Fis Nucl, I-80125 Naples, Italy. Dept Phys Sci, I-80125 Naples, Italy. Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England. Royal Inst Technol, Dept Phys, S-10044 Stockholm, Sweden. Forschungszentrum Julich, Inst Kernphys, Julich, Germany. Univ Lyon 1, CNRS, IPN Lyon, IN2P3, F-69622 Villeurbanne, France. CEA Saclay, DAPNIA SPhN, F-91191 Gif Sur Yvette, France. RP Univ Milan, Dipartimento Fis, I-20122 Milan, Italy. RI Hauschild, Karl/A-6726-2009; Wieland, Oliver/G-1784-2011; Dombradi, Zsolt/B-3743-2012; Petrache, Costel/E-9867-2012; CURIEN, Dominique/B-6718-2013; Cederwall, Bo/M-3337-2014; Algora, Alejandro/E-2960-2015; Rainovski, Georgi/A-3450-2008 OI Camera, Franco/0000-0003-1731-4834; Gorgen, Andreas/0000-0003-1916-9941; Petrache, Costel/0000-0001-8419-1390; Cederwall, Bo/0000-0003-1771-2656; Algora, Alejandro/0000-0002-5199-1794; Rainovski, Georgi/0000-0002-1729-0249 NR 13 TC 2 Z9 2 U1 0 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 OCT PY 2005 VL 31 IS 10 SI SI BP S1729 EP S1733 DI 10.1088/0954-3899/31/10/063 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600065 ER PT J AU Plettner, C Ai, H Beausang, CW Bernstein, LA Ahle, L Amro, H Babilon, M Burke, JT Caggiano, JA Casten, RF Church, JA Cooper, JR Crider, B Gurdal, G Heinz, A McCutchan, EA Moody, K Punyon, JA Qian, J Ressler, JJ Schiller, A Williams, E Younes, W AF Plettner, C Ai, H Beausang, CW Bernstein, LA Ahle, L Amro, H Babilon, M Burke, JT Caggiano, JA Casten, RF Church, JA Cooper, JR Crider, B Gurdal, G Heinz, A McCutchan, EA Moody, K Punyon, JA Qian, J Ressler, JJ Schiller, A Williams, E Younes, W TI Measuring reaction probability ratios to simulate neutron-induced cross-sections of short-lived nuclei SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID PLUTONIUM ISOTOPES; FISSION; URANIUM AB Measuring the neutron-induced fission cross-sections of short-lived nuclei represents an experimental challenge due to target activity and the low intensity of neutron beams. One way to alleviate the problems inherent in the direct measurement is to use the surrogate method, where one measures the decay probability of the same compound nucleus formed using a charged beam and a stable target. The decay probability of the compound nucleus is then used to estimate the neutron-induced cross-section. As an extension to the surrogate method, we introduce a new method of reporting the fission probabilities of two compound nuclei as a ratio, which has the advantage of removing most of the systematic uncertainties. The ratio method was checked in a known case, the U-236(n, f)/U-238(n, f) cross-section ratio, which turned out to be the same as the probability ratio of P(U-236 (d, Pf))/P(U-238(d, pf)). As an application, the U-237(n, f)/U-235(n, f) cross-section ratio was inferred, on the basis of the measured p(U-238(d, d'f))/P(U-216(d, d'f)) probability ratio. C1 Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. Univ Richmond, Dept Phys, Richmond, VA 23173 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany. Clark Univ, Worcester, MA 01610 USA. Michigan State Univ, NSCL, E Lansing, MI 48824 USA. RP Plettner, C (reprint author), Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. RI Ressler, Jennifer Jo/F-2279-2010; Qian, Jing/F-9639-2010; Heinz, Andreas/E-3191-2014; Williams, Elizabeth/D-3442-2014; Burke, Jason/I-4580-2012; OI Qian, Jianming/0000-0003-4813-8167 NR 11 TC 1 Z9 1 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD OCT PY 2005 VL 31 IS 10 SI SI BP S1573 EP S1576 DI 10.1088/0954-3899/31/10/035 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600037 ER PT J AU Riley, MA Djongolov, MK Evans, AO Hartley, DJ Janssens, RVF Paul, ES Simpson, J Aguilar, AA Appelbe, DE Bingham, CR Campbell, DB Carpenter, MP Chowdhury, P Choy, PTW Clark, RM Cromaz, M Cullen, DM Danchev, M Dracoulis, GD Fallon, P Gorgen, A Hagemann, GB Joss, DT Goon, J Kaye, RA Khoo, TL Kondev, FG Laird, RW Lagergren, K Lauritsen, T Macchiavelli, AO McClain, B Moore, EF Mukherjee, G Ngijoi-Yogo, E Nolan, PJ Park, HI Pipidis, A Riedinger, LL Sletten, G Tandel, SK Walker, PM Ward, D Ragnarsson, I Saric, F Zhang, JY AF Riley, MA Djongolov, MK Evans, AO Hartley, DJ Janssens, RVF Paul, ES Simpson, J Aguilar, AA Appelbe, DE Bingham, CR Campbell, DB Carpenter, MP Chowdhury, P Choy, PTW Clark, RM Cromaz, M Cullen, DM Danchev, M Dracoulis, GD Fallon, P Gorgen, A Hagemann, GB Joss, DT Goon, J Kaye, RA Khoo, TL Kondev, FG Laird, RW Lagergren, K Lauritsen, T Macchiavelli, AO McClain, B Moore, EF Mukherjee, G Ngijoi-Yogo, E Nolan, PJ Park, HI Pipidis, A Riedinger, LL Sletten, G Tandel, SK Walker, PM Ward, D Ragnarsson, I Saric, F Zhang, JY TI Beyond band termination in Er-157 and the search for wobbling excitations in strongly deformed Hf-174 SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID NUCLEI AB High-spin terminating bands in heavy nuclei were first identified in nuclei around Er-158(90). While examples of special terminating states have been identified in a number of erbium isotopes, almost nothing is known about the states lying beyond band termination. In the present work the high-spin structure of Er-157 has been studied using the Gammasphere spectrometer. The subject of triaxial superdeformation and 'wobbling' modes in Lu nuclei has rightly attracted a great deal of attention. Very recently, four strongly or superdeformed (SD) sequences have been observed in Hf-174 and ultimate cranker calculations predict, such structures may have significant triaxial deformation. We have performed two experiments in an attempt to verify the possible triaxial nature of these bands. A lifetime measurement was performed to confirm the large (and similar) deformation of the bands. In addition, a high-statistics, thin-target experiment was run to search for linking transitions between the SD bands and possible wobbling modes. C1 Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England. USN Acad, Dept Phys, Annapolis, MD 21402 USA. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. CCLRC Daresbury Lab, Warrington WA4 4AD, Cheshire, England. Univ Massachusetts, Dept Phys, Lowell, MA 01854 USA. Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA. Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England. Australian Natl Univ, Dept Nucl Phys, Canberra, ACT 0200, Australia. Niels Bohr Inst, DK-2100 Copenhagen, Denmark. Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA. Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. Trinity Univ, Dept Phys, San Antonio, TX 78212 USA. Univ Surrey, Dept Phys, Guildford GU2 5XH, Surrey, England. Lund Inst Technol, Dept Math Phys, S-22100 Lund, Sweden. RP Riley, MA (reprint author), Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. RI Dracoulis, George/A-8123-2008; Carpenter, Michael/E-4287-2015; OI Carpenter, Michael/0000-0002-3237-5734; Gorgen, Andreas/0000-0003-1916-9941 NR 20 TC 1 Z9 1 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD OCT PY 2005 VL 31 IS 10 SI SI BP S1735 EP S1740 DI 10.1088/0954-3899/31/10/064 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600066 ER PT J AU Seweryniak, D Davids, CN Robinson, A Woods, PJ Blank, B Carpenter, MP Davinson, T Freeman, SJ Hammond, N Hoteling, N Janssens, RVF Khoo, TL Liu, Z Mukherjee, G Shergur, J Sinha, S Sonzogni, AA Walters, WB Woehr, A AF Seweryniak, D Davids, CN Robinson, A Woods, PJ Blank, B Carpenter, MP Davinson, T Freeman, SJ Hammond, N Hoteling, N Janssens, RVF Khoo, TL Liu, Z Mukherjee, G Shergur, J Sinha, S Sonzogni, AA Walters, WB Woehr, A TI Proton decay: spectroscopic probe beyond the proton drip line SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID FINE-STRUCTURE AB Proton decay has been transformed in recent years from an exotic phenomenon into a powerful spectroscopic tool. The frontiers of experimental and theoretical proton-decay studies will be reviewed. Different aspects of proton decay will be illustrated with recent results on the deformed proton emitter Tb-135, the odd-odd deformed proton emitter Eu-130, the complex fine structure in the odd-odd Tm-146 nucleus and on excited states in the transitional proton emitter Tm-145. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Edinburgh, Edinburgh, Midlothian, Scotland. CEN Bordeaux Gradignan, IN2P3, CNRS, Bordeaux, France. Univ Manchester, Manchester, Lancs, England. Univ Maryland, College Pk, MD 20742 USA. Brookhaven Natl Lab, NNDC, Upton, NY 11937 USA. RP Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Freeman, Sean/B-1280-2010; Carpenter, Michael/E-4287-2015; OI Freeman, Sean/0000-0001-9773-4921; Carpenter, Michael/0000-0002-3237-5734; Hammond, Neil/0000-0001-6390-8874 NR 17 TC 7 Z9 8 U1 1 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 OCT PY 2005 VL 31 IS 10 SI SI BP S1503 EP S1508 DI 10.1088/0954-3899/31/10/021 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600023 ER PT J AU Smith, AG Orlandi, R Patel, D Simpson, GS Wall, RM Smith, JF Onakanmi, J Ahmad, I Greene, JP Carpenter, MP Lauritsen, T Lister, CJ Janssens, RVF Kondev, FG Seweryniak, D Gall, BJP Dorvaux, O Roux, B AF Smith, AG Orlandi, R Patel, D Simpson, GS Wall, RM Smith, JF Onakanmi, J Ahmad, I Greene, JP Carpenter, MP Lauritsen, T Lister, CJ Janssens, RVF Kondev, FG Seweryniak, D Gall, BJP Dorvaux, O Roux, B TI The magnetic properties of collective states in A similar to 100 fission fragments SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID SHELL-MODEL DESCRIPTION; EXCITED-STATES; NUCLEAR-DEFORMATION; NEUTRON EXCITATIONS; HYPERFINE-FIELD; MOMENTS; PROTON; ISOTOPES; TRANSITION; REGION AB The magnetic moments of I-pi = 2(1)(+) states in even-even A similar to 100 fission fragments have been measured using the Gammasphere array, using the technique of time-integral perturbed angular correlations. The collective (core) g factors of several odd nuclei have also been determined. The data are interpreted within the context of the interacting boson model (IBA2). C1 Univ Manchester, Manchester M13 9PL, Lancs, England. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Strasbourg, CNRS, IN2P3, Inst Rech Subatom, F-67037 Strasbourg, France. RP Univ Manchester, Manchester M13 9PL, Lancs, England. EM gavin.smith@man.ac.uk RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 49 TC 11 Z9 11 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 OCT PY 2005 VL 31 IS 10 SI SI BP S1433 EP S1438 DI 10.1088/0954-3899/31/10/009 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600011 ER PT J AU Williams, SJ Jenneson, PM Garrett, PE Regan, PH Andreoiu, C Ball, GC Chakrawarthy, RS Daoud, JJ Grinyer, GF Hackman, G Hyland, B Mlwilo, NA Morton, AC Pearson, CJ Ressler, JJ Schumaker, MA Smith, MB Svensson, CE Dobon, JJV AF Williams, SJ Jenneson, PM Garrett, PE Regan, PH Andreoiu, C Ball, GC Chakrawarthy, RS Daoud, JJ Grinyer, GF Hackman, G Hyland, B Mlwilo, NA Morton, AC Pearson, CJ Ressler, JJ Schumaker, MA Smith, MB Svensson, CE Dobon, JJV TI Testing the integration of BaF2 detectors into the 8 pi array: fast-timing measurements at TRIUMF SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article; Proceedings Paper CT 1st International Conference on Nuclear, Structure, Astrophysics and Reactions (NUSTAR 05) CY JAN 05-08, 2005 CL Univ Surrey, Guildford, ENGLAND SP Inst Phys HO Univ Surrey ID GAMMA-RAY SPECTROSCOPY AB BaF2 detectors for picosecond gamma-ray decay lifetime measurements have been installed into the 8 pi gamma-ray spectrometer as a proof-of-principle for a possible installation of a full array of ten detectors. Using four detectors a test measurement of 6 half-life of the 2(+) state in Sm-152 resulted in a value of 1.33(6). ns, compared with a published value of 1.396 ns. Measurements with a Na-26 stopped beam were performed with various master-trigger conditions. Using a master trigger of germanium-SCEPTAR-BaF2 OR BaF2-BaF2, the FWHM of the BaF2-BaF2 triggered events was found to be similar to 290 ps compared with similar to 1.9 ns for the germanium-SCEPTAR-BaF2 triggered events. Simulations using GEANT4 of a suggested BaF2 lifetime measurement system have been carried out. These illustrate the considerable gain in spectrum quality which can be expected using simple add-back protocols. C1 Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. TRIUMF, Vancouver, BC V6T 2A3, Canada. Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada. RP Williams, SJ (reprint author), Inst Nazl Fis Nucl, Lab Nazl Legnaro, Legnaro, Italy. EM s.williams@surrey.ac.uk RI Ressler, Jennifer Jo/F-2279-2010; Morton, Colin/K-1561-2015; OI Morton, Colin/0000-0003-0214-7551; Smith, Martin/0000-0003-0834-1574 NR 14 TC 4 Z9 4 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD OCT PY 2005 VL 31 IS 10 SI SI BP S1979 EP S1984 DI 10.1088/0954-3899/31/10/114 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 974FB UT WOS:000232575600116 ER PT J AU Park, YJ Richardson, DE Montgomery, DC Ozol-Godfrey, A Borror, CM Anderson-Cook, CM AF Park, YJ Richardson, DE Montgomery, DC Ozol-Godfrey, A Borror, CM Anderson-Cook, CM TI Prediction variance properties of second-order designs for cuboidal regions SO JOURNAL OF QUALITY TECHNOLOGY LA English DT Article DE cuboidal regions; genetic algorithm; prediction variance; response surface methodology; scaled prediction variance ID RESPONSE-SURFACE DESIGNS; SECOND-ORDER DESIGNS; GENETIC ALGORITHMS; FACTORIAL DESIGNS; NOISE VARIABLES; 3N FACTORIAL; CONSTRUCTION; FRACTIONS; CAPABILITY; MIXTURE AB Much information is available about the construction and evaluation of the prediction variance properties of response surface designs for fitting a second-order model in a spherical region of interest. There is less information; available about the prediction variance properties of second-order designs for a cuboidal region. In this paper, we construct and evaluate designs that are appropriate for the second-order model in cuboidal regions of interest. Several standard experimental designs are investigated and some new designs created using the G and / optimality criteria. We evaluate the designs using the variance of the predicted response over the design region. Variance dispersion graphs and fraction of design space plots are utilized to characterize the scaled prediction variance properties of the most promising designs. C1 Samsung Elect, Engn Informat Grp, Hwasung 445701, Kyeungkee, South Korea. Arizona State Univ, Dept Math & Stat, Tempe, AZ 85287 USA. Wyeth Pharmaceut, Biostat Grp, Pearl River, NY 10965 USA. Arizona State Univ W, Dept Math & Appl Comp, Glendale, AZ 85306 USA. Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM 87545 USA. RP Park, YJ (reprint author), Samsung Elect, Engn Informat Grp, Hwasung 445701, Kyeungkee, South Korea. EM youjin.park@samsung.com; diane.richardson@asu.edu; Doug.Montgomery@asu.edu; GodfreA@wyeth.com; connieborror@cox.net; c-and-cook@lanl.gov OI Park, You-Jin/0000-0002-1006-5380 NR 29 TC 14 Z9 14 U1 1 U2 2 PU AMER SOC QUALITY CONTROL-ASQC PI MILWAUKEE PA 600 N PLANKINTON AVE, MILWAUKEE, WI 53203 USA SN 0022-4065 J9 J QUAL TECHNOL JI J. Qual. Technol. PD OCT PY 2005 VL 37 IS 4 BP 253 EP 266 PG 14 WC Engineering, Industrial; Operations Research & Management Science; Statistics & Probability SC Engineering; Operations Research & Management Science; Mathematics GA 970MI UT WOS:000232313900001 ER PT J AU Smith, JA Finkel, RC Farber, DL Rodbell, DT Seltzer, GO AF Smith, JA Finkel, RC Farber, DL Rodbell, DT Seltzer, GO TI Moraine preservation and boulder erosion in the tropical Andes: interpreting old surface exposure ages in glaciated valleys SO JOURNAL OF QUATERNARY SCIENCE LA English DT Article DE surface exposure dating; cosmogenic radionuclides; Andes; glacial chronology; boulder erosion ID LATE QUATERNARY GLACIATION; SITU COSMOGENIC NUCLIDES; SOUTH-AMERICA; PRODUCTION-RATES; EASTERN CORDILLERA; MAXIMUM SNOWLINES; ECUADORIAN ANDES; LAST GLACIATION; CLIMATE-CHANGE; CENTRAL PERU AB Cosmogenic dating provides a long-awaited means of directly dating glacial deposits that pre-date the last glacial cycle. Although the potential benefits of longer chronologies are obvious, the greater uncertainty associated with older cosmogenic ages may be less readily apparent. We illustrate the challenges of developing and interpreting a long chronology using Our data from the Peruvian Andes. We used surface exposure dating with cosmogenic radionuclides (CRNs; Be-10 and Al-26) to date 140 boulders on moraines in valleys bordering the Junin Plain (11 degrees S, 76 degrees W) in central Peru. Our chronology spans Multiple glacial cycles and includes exposure ages greater than 1 million years, which indicate that long-term rates of boulder erosion have been very low. Interpreting the chronology of moraines for glaciations that predate the last glacial cycle is complicated by the need to consider boulder erosion and exhumation, Surface uplift, and inheritance of CRNs front previous exposure intervals. As an example, we recalculate exposure ages using our boulder erosion rates (0.3-0.5 metres per million years) and estimated surface uplift rates to emphasise both the challenges involved in interpreting old Surface exposure ages and the value of chronological data, even with large uncertainties, when reconstructing the palaeoclimate of a region. Copyright (C) 2005 John Wiley & Sons, Ltd. C1 Union Coll, Dept Geol, FW Olin Ctr, Schenectady, NY 12308 USA. Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA USA. Syracuse Univ, Dept Earth Sci, Syracuse, NY USA. RP Smith, JA (reprint author), Union Coll, Dept Geol, FW Olin Ctr, Olin Bldg, Schenectady, NY 12308 USA. EM smithj5@union.edu RI Farber, Daniel/F-9237-2011 NR 81 TC 39 Z9 43 U1 0 U2 6 PU JOHN WILEY & SONS LTD PI CHICHESTER PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND SN 0267-8179 J9 J QUATERNARY SCI JI J. Quat. Sci. PD OCT-DEC PY 2005 VL 20 IS 7-8 BP 735 EP 758 DI 10.1002/jqs.981 PG 24 WC Geosciences, Multidisciplinary; Paleontology SC Geology; Paleontology GA 000CQ UT WOS:000234438900011 ER PT J AU Farber, DL Hancock, GS Finkel, RC Rodbell, DT AF Farber, DL Hancock, GS Finkel, RC Rodbell, DT TI The age and extent of tropical alpine glaciation in the Cordillera Blanca, Peru SO JOURNAL OF QUATERNARY SCIENCE LA English DT Article DE palaeoclimate; tropical glaciation; geochronology; cosmogenic; radionuclides; Andes ID COSMOGENIC ISOTOPE PRODUCTION; LAST DEGLACIATION; PRODUCTION-RATES; NORTH-ATLANTIC; YOUNGER-DRYAS; CLIMATE-CHANGE; ICEBERG DISCHARGES; ATACAMA DESERT; SIERRA-NEVADA; SOUTH-AMERICA AB Based on new Be-10 data for moraines in the Cordillera Blanca of central Peru, we have calculated model ages of three sets of Pleistocene glacial moraines. In order of decreasing age, these are the Cojup, Rurec and Laguna Baja moraines, The oldest moraines occur at the lowest elevations and yield dates of >400ka pre-dating the last interglacial and demonstrating that maximum ice volumes Occurred during previous glacial periods, and not at the end of the last glacial. Our new data from the Younger moraines indicate that the end of the last glacial cycle comprised two separate advances at ca. 29 ka and ca. 16.5 ka, each reflecting significant (>4 degrees C) tropical of cooling at 10 degrees S. These data combined with Published records from the Laurentide ice sheet, indicate that climate instabilities associated with the close of the last glacial were likely global and Synchronous in nature. Copyright (C) 2005 John Wiley & Sons, Ltd. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. Coll William & Mary, Williamsburg, VA USA. Union Coll, Schenectady, NY 12308 USA. RP Farber, DL (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM farber2@llnl.gov RI Farber, Daniel/F-9237-2011; Hancock, Gregory/I-7310-2012 NR 76 TC 68 Z9 69 U1 2 U2 24 PU JOHN WILEY & SONS LTD PI CHICHESTER PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND SN 0267-8179 J9 J QUATERNARY SCI JI J. Quat. Sci. PD OCT-DEC PY 2005 VL 20 IS 7-8 BP 759 EP 776 DI 10.1002/jqs.994 PG 18 WC Geosciences, Multidisciplinary; Paleontology SC Geology; Paleontology GA 000CQ UT WOS:000234438900012 ER PT J AU Hassan, NM AF Hassan, NM TI Adsorption of cesium from spent nuclear fuel basin water SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY LA English DT Article AB Batch equilibrium and kinetic measurements were performed for Cs+ exchange in silicotitanate zeolite (Ionsiv(R) TIE-96) at 30 and 60 degrees C. The Langmuir isotherm equation provided a good fit of the equilibrium data. The heats of exchange reaction between Cs+ in the aqueous solution and Na+ in the zeolite structure were derived from the equilibrium data. The results indicate that the exchange mechanism is different from that of physical adsorption on heterogeneous materials. The apparent diffusion coefficients and activation energy were derived from the kinetic data and the values obtained for inter-diffusion of Cs+ and Na+ cations in the zeolite structure were 1.33.10(-12) and 1.04.10(-12) cm(2.)s(-1) at 30 and 60 degrees C, respectively. The activation energy for Cs+ was 1.7 kcal/mol, suggesting that the Cs+ cation can access easily all the sites in the zeolite framework. Thus, the exchange of Cs+ with Na+ in the zeolite was not hindered by ion-sieve effects. C1 Westinghouse Savannah River Co, Savannah River Lab, Aiken, SC 29808 USA. RP Hassan, NM (reprint author), Westinghouse Savannah River Co, Savannah River Lab, Aiken, SC 29808 USA. NR 6 TC 2 Z9 2 U1 0 U2 3 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 OCT PY 2005 VL 266 IS 1 BP 57 EP 59 DI 10.1007/s10967-005-0868-5 PG 3 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA 973NN UT WOS:000232530000008 ER PT J AU Knoll, DA Mousseau, VA Chacon, L Reisner, J AF Knoll, DA Mousseau, VA Chacon, L Reisner, J TI Jacobian-free Newton-Krylov methods for the accurate time integration of stiff wave systems SO JOURNAL OF SCIENTIFIC COMPUTING LA English DT Article; Proceedings Paper CT Workshop on Advances and Challenges in Time-Integration of PDEs CY AUG 18-20, 2003 CL Brown Univ, Providence, RI SP USAF Off Sci Res HO Brown Univ DE Newton-Krylov; physics-based preconditioning ID IMPLICIT; EQUATIONS; SOLVER AB Stiff wave systems are systems which exhibit a slow dynamical time scale while possessing fast wave phenomena. The physical effects of this fast wave may be important to the system, but resolving the fast time scale may not be required. When simulating such phenomena one would like to use time steps on the order of the dynamical scale for time integration. Historically, Semi-Implicit (SI) methods have been developed to step over the stiff wave time scale in a stable fashion. However, SI methods require some linearization and time splitting, and both of these can produce additional time integration errors. In this paper, the concept of using SI methods as preconditioners to Jacobian-Free Newton-Krylov (JFNK) methods is developed. This algorithmic approach results in an implicitly balanced method (no linearization or time splitting). In this paper, we provide an overview of SI methods in a variety of applications, and a brief background on JFNK methods. We will present details of our new algorithmic approach. Finally, we provide an overview of results coming from problems in geophysical fluid dynamics (GFD) and magnetohydrodynamics (MHD). C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. RP Knoll, DA (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM nol@lanl.gov NR 31 TC 21 Z9 21 U1 0 U2 5 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0885-7474 J9 J SCI COMPUT JI J. Sci. Comput. PD OCT PY 2005 VL 25 IS 1 BP 213 EP 230 DI 10.1007/s10915-004-4640-8 PG 18 WC Mathematics, Applied SC Mathematics GA 990GD UT WOS:000233730300012 ER PT J AU Najm, HN Knio, OM AF Najm, HN Knio, OM TI Modeling low Mach number reacting flow with detailed chemistry and transport SO JOURNAL OF SCIENTIFIC COMPUTING LA English DT Article; Proceedings Paper CT Workshop on Advances and Challenges in Time-Integration of PDEs CY AUG 18-20, 2003 CL Brown Univ, Providence, RI SP USAF Off Sci Res HO Brown Univ DE reacting flow; time integration; operator splitting; Runge-Kutta-Chebyschev; stiffness ID NAVIER-STOKES EQUATIONS; PARTIAL-DIFFERENTIAL-EQUATIONS; SEMIIMPLICIT PROJECTION METHODS; VISCOUS INCOMPRESSIBLE-FLOW; CONSISTENT MASS MATRIX; FRACTIONAL-STEP METHOD; KUTTA-CHEBYSHEV METHOD; FINITE-ELEMENT METHOD; NUMERICAL-SIMULATION; PARABOLIC EQUATIONS AB An efficient projection scheme is developed for the simulation of reacting flow with detailed kinetics and transport. The scheme is based on a zero-Mach-number formulation of the compressible conservation equations for an ideal gas mixture. It relies on Strang splitting of the discrete evolution equations, where diffusion is integrated in two half steps that are symmetrically distributed around a single stiff step for the reaction source terms. The diffusive half-step is integrated using an explicit single-step, multistage, Runge-Kutta-Chebyshev (RKC) method. The resulting construction is second-order convergent, and has superior efficiency due to the extended real-stability region of the RKC scheme. Two additional efficiency-enhancements are also explored, based on an extrapolation procedure for the transport coefficients and on the use of approximate Jacobian data evaluated on a coarse mesh. We demonstrate the construction in 1D and 2D flames, and examine consequences of splitting errors. By including the above enhancements, performance tests using 2D computations with a detailed C1C2 methane-air mechanism and a mixture-averaged transport model indicate that speedup factors of about 15 are achieved over the starting split-stiff scheme. C1 Sandia Natl Labs, Livermore, CA 94550 USA. Johns Hopkins Univ, Baltimore, MD USA. RP Sandia Natl Labs, Livermore, CA 94550 USA. RI Knio, Omar/A-3318-2010 NR 66 TC 24 Z9 27 U1 0 U2 7 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0885-7474 EI 1573-7691 J9 J SCI COMPUT JI J. Sci. Comput. PD OCT PY 2005 VL 25 IS 1 BP 263 EP 287 DI 10.1007/s10915-003-4643-x PG 25 WC Mathematics, Applied SC Mathematics GA 990GD UT WOS:000233730300014 ER PT J AU Ganguli, AK Gupta, S Zhao, JT Leon-Escamilla, EA Corbett, JD AF Ganguli, AK Gupta, S Zhao, JT Leon-Escamilla, EA Corbett, JD TI Inherent instabilities of some W5Si3-type binary phases with large electropositive metal atoms: Six examples in the Ba-Pb, Ca-Sn-Mg,Cu,Zn, and La-Ga-Al,Zn systems SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article DE W(5)Si(3)structure; crystal structure; structural instability; Ba5Pb3 problems; Ca5Sn3 problems; La5Ga3 problems ID INTERMETALLIC COMPOUNDS; INTERSTITIAL COMPOUNDS; CR5B3-LIKE STRUCTURES; RARE-EARTH; SN SYSTEM; EU; ANTIMONIDES; DIAGRAM; SR; TT AB A particular pathology of certain W5Si3-type A(5)B(3) structures (I4/mcm) appears to arise because of unduly close approaches of the A1-type atoms on the cell faces at 1/2, 0, (1/4, 3/4) that occur with the larger and more electropositive A and/or in the presence of smaller B atoms. A structure refinement of binary Ba4.81Pb3 indicates such a marginal stability in that the Ba atoms in the facial Ba-0.81, chains exhibit an extreme displacement ellipsoid along (c) over right arrow. Although Ca5Sn3 and La5Ga3 binaries are unknown in this structure type, five stable ternary derivatives of these have been synthesized via substitution reactions and characterized by single crystal X-ray diffraction means: Ca4Sn3.223(4)Mg0.777, Ca4Sn3Cu1.30(4), Ca4.66(6)Sn3Zn0.704(4), La4.81(1)Ga1.38(2)Al1.62, and La4.762(5)Ga1.5(1)Zn1.5. Only the Ca-Sn-Zn phase exhibits lower symmetry, P4/mbm. The problematic A 1 sites exhibit diverse changes in these, whereas the surrounding B2 tetrahedra are largely unaltered. The Ca-Sn results are, respectively: direct Mg/Sn substitution at the Cal site; mixed fractional distribution of the smaller Cu at two sites around the A 1 position with an unresolved disorder; a pair of apparently independent modes, fractional Ca in the normal position and fractional Zn rectangles thereabout. The two La-Sn phases contain normal Ga,Al (Ga,Zn) tetrahedral chains with pairs of fractional disordered La atoms along 1/2, 0, z. Each can be rationalized in terms of a reasonable incommensurate structure. Electronic effects may also be operable. (c) 2005 Elsevier Inc. All rights reserved. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. Indian Inst Technol, Dept Chem, New Delhi 110016, India. Shanghai Inst Ceram, Shanghai 200050, Peoples R China. RP Corbett, JD (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. EM jcorbett@iastate.edu RI Gupta, Shalabh/H-6214-2012 NR 38 TC 10 Z9 10 U1 0 U2 5 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0022-4596 J9 J SOLID STATE CHEM JI J. Solid State Chem. PD OCT PY 2005 VL 178 IS 10 BP 2959 EP 2972 DI 10.1016/j.jssc.2005.06.044 PG 14 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA 971XL UT WOS:000232418200001 ER PT J AU Levitskaia, TG Lumetta, GJ AF Levitskaia, TG Lumetta, GJ TI Solvent modification in ion-pair extraction: Effect on sodium nitrate transport in nitrobenzene using a crown ether SO JOURNAL OF SOLUTION CHEMISTRY LA English DT Article DE solvent modifiers; solvent extraction; ion transport; sodium nitrate; crown ether ID SOLVATOCHROMIC COMPARISON METHOD; SOLVATION ENERGY RELATIONSHIPS; ORGANIC-SOLVENTS; LARIAT ETHER; QUANTITATIVE ELUCIDATION; FUNDAMENTAL EQUILIBRIA; POTASSIUM PERCHLORATES; NONAQUEOUS SOLVENTS; CRYSTAL-STRUCTURE; METAL-IONS AB A comparative quantitative analysis of the effect of solvent modifiers on the ion-pair extraction of an inorganic salt by a crown ether was conducted with the aim of advancing the understanding of transport of highly hydrophilic metal ions from aqueous salt solutions. Two classes of solvent modifiers that possess electron-pair donor (EPD) or hydrogen-bond donor (HBD) groups were investigated. The equilibrium constants corresponding to the extraction of sodium nitrate into nitrobenzene (NB) employing model neutral host cis-syn-cis-dicyclohexano-18-crown-6 (compound 1) with and without solvent modifier were determined using the SXLSQI computer model. For a series of EPD modifiers-including tri-n-butyl- and tri-phenylphosphate, tri-n-butyl- and tri-phenylphosphine oxide, N,N-di-n-butyl- and N,N-di-phenylacetamide-the enhancement of the NaNO3 extraction by compound 1 was found to be dependent on the hydrogen-bond acceptance ability of the modifier as quantified by the beta solvatochromic parameter. A HBD modifier 3,5-di-t-butyl phenol (compound 8), which forms strong hydrogen bonds with nitrate anion in NB, exhibited even greater enhancement of the NaNO3 extraction by compound 1. The determined extraction constants were correlated with the beta- or alpha-solvatochromic parameters of the solvent modifiers and linear trends were observed. Hydrogen bond interaction between compound 8 and nitrate anion in the presence of the sodium-loaded crown ether in the extraction phases was studied by vibrational spectroscopy. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Levitskaia, TG (reprint author), Pacific NW Natl Lab, POB 999,MSIN P7-22, Richland, WA 99352 USA. EM tatiana.levitskaia@pnl.gov NR 77 TC 0 Z9 0 U1 1 U2 2 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0095-9782 J9 J SOLUTION CHEM JI J. Solut. Chem. PD OCT PY 2005 VL 34 IS 10 BP 1145 EP 1166 DI 10.1007/s10953-005-7693-x PG 22 WC Chemistry, Physical SC Chemistry GA 981JT UT WOS:000233085600005 ER PT J AU Boily, JF Seward, TM AF Boily, JF Seward, TM TI Dissociation of fumaric acid: Spectrophotometric investigation in aqueous solutions from 10 to 90 degrees C and theoretical considerations SO JOURNAL OF SOLUTION CHEMISTRY LA English DT Article DE fumaric acid; uv-vis; spectrophotometry; factor analysis; TD-DFT; AIM; ELF ID DENSITY-FUNCTIONAL THEORY; ELECTRON LOCALIZATION; CARBOXYLIC-ACIDS; MALEIC-ACID; TOPOLOGICAL ANALYSIS; EXCITATION-ENERGIES; DICARBOXYLIC-ACIDS; CHEMICAL-BOND; THERMODYNAMICS; HYDRATION AB The dissociation constants of fumaric acid were extracted from UV-vis spectra in the 10-90 degrees C range. These values were used to extract thermodynamic parameters that showed the temperature effects on the dissociations reactions to be dominantly driven by the solvent. The molar absorption coefficients for the fumaric acid, the bifumarate and fumarate species, can be accurately reproduced with the two-term Gauss-Lorentz equation. Deconvolution of these bands showed strong pi-pi* transitions for all species and weaker charge-trans fer-to-sol vent transitions for the charged species. TD-DFT calculations were used to identify the most important molecular orbitals involved in the vertical excitations of the fumaric acid species. The electron population and their states of delocalization were also estimated with topological analyses of the electron density and of the Becke-Edgecombe Electron Localization Function. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. ETH, Swiss Fed Inst Technol, Inst Mineral & Petrol, CH-8092 Zurich, Switzerland. RP Boily, JF (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM boily@pnl.gov RI Seward, Terry/F-1103-2011 NR 61 TC 11 Z9 11 U1 3 U2 16 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0095-9782 J9 J SOLUTION CHEM JI J. Solut. Chem. PD OCT PY 2005 VL 34 IS 10 BP 1167 EP 1190 DI 10.1007/s10953-005-7694-9 PG 24 WC Chemistry, Physical SC Chemistry GA 981JT UT WOS:000233085600006 ER PT J AU Ben-Naim, E Krapivsky, PL AF Ben-Naim, E Krapivsky, PL TI Chronological rank in biological evolution SO JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT LA English DT Article DE models for evolution (theory) ID GENOME EVOLUTION AB We present a statistical analysis of biological evolution processes. Specifically, we study the stochastic replication - mutation - death model where the population of a species may grow or shrink by birth or death, respectively, and additionally, mutations lead to the creation of new species. We rank the various species by the chronological order by which they originate. The average population N-k of the kth species decays algebraically with rank, N-k similar to M-mu k(-mu), where M is the average total population. The characteristic exponent mu = (alpha-gamma)/(alpha + beta - gamma) depends on alpha, beta, and gamma, the replication, mutation, and death rates. Furthermore, the average population P-k of all descendants of the kth species has a universal algebraic behaviour, P-k similar to M k(-1). C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. Boston Univ, Dept Phys, Boston, MA 02215 USA. Boston Univ, Ctr Mol Cybernet, Boston, MA 02215 USA. RP Ben-Naim, E (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM ebn@lanl.gov; paulk@bu.edu RI Ben-Naim, Eli/C-7542-2009; Krapivsky, Pavel/A-4612-2014 OI Ben-Naim, Eli/0000-0002-2444-7304; NR 27 TC 3 Z9 3 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1742-5468 J9 J STAT MECH-THEORY E JI J. Stat. Mech.-Theory Exp. PD OCT PY 2005 AR L10002 DI 10.1088/1742-5468/2005/10/L10002 PG 8 WC Mechanics; Physics, Mathematical SC Mechanics; Physics GA 980UY UT WOS:000233044900001 ER PT J AU Almer, JD Stock, SR AF Almer, JD Stock, SR TI Internal strains and stresses measured in cortical bone via high-energy X-ray diffraction SO JOURNAL OF STRUCTURAL BIOLOGY LA English DT Article DE X-ray diffraction; X-ray scattering; synchrotron radiation; stress; bone ID POLE FIGURE ANALYSIS; SYNCHROTRON-RADIATION; MINERAL CRYSTALS; TEXTURE ANALYSIS; IN-VIVO; NEUTRON-DIFFRACTION; CARBONATED APATITE; CALCIFIED TISSUES; OSTEONIC LAMELLAE; DETECTOR SYSTEMS AB High-energy synchrotron X-ray diffraction was used to study internal stresses in bone under in situ compressive loading. A transverse cross-section of a 12-14 year old beagle fibula was studied with 80.7 keV radiation, and the transmission geometry was used to quantify internal strains and corresponding stresses in the mineral phase, carbonated hydroxyapatite. The diffraction patterns agreed with tabulated patterns, and the distribution of diffracted intensity around 00.2/00.4 and 22.2 diffraction rings was consistent with the imperfect 00.1 fiber texture expected along the axis of a long bone. Residual compressive stress along the bone's longitudinal axis was observed in the specimen prior to testing: for 22.2 this stress equaled -95 MPa and for 00.2/00.4 was between -160 and -240 MPa. Diffraction patterns were collected for applied compressive stresses up to -110 MPa, and, up to about -100 MPa, internal stresses rose proportionally with applied stress but at a higher rate, corresponding to stress concentration in the mineral of 2.8 times the stress applied. The widths of the 00.2 and 00.4 diffraction peaks indicated that crystallite size perpendicular to the 00.1 planes increased from t = 41 nm before stress was applied to t = 44 nm at -118 MPa applied stress and that rms strain epsilon(rms) rose from 2200 mu epsilon before loading to 4600 mu epsilon at the maximum applied stress. Small angle X-ray scattering of the unloaded sample, recorded after deformation was complete, showed a collagen D-period of 66.4 nm (along the bone axis). (C) 2005 Elsevier Inc. All rights reserved. C1 Northwestern Univ, Inst BioNAnotechnol Med, Chicago, IL 60611 USA. Argonne Natl Lab, Adv Photon Source, XOR, Argonne, IL 60439 USA. RP Stock, SR (reprint author), Northwestern Univ, Inst BioNAnotechnol Med, 303 E Chicago Ave, Chicago, IL 60611 USA. EM s-stock@northwestern.edu NR 73 TC 90 Z9 92 U1 1 U2 14 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 OCT PY 2005 VL 152 IS 1 BP 14 EP 27 DI 10.1016/j.jsb.2005.08.003 PG 14 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 974DU UT WOS:000232572300002 PM 16183302 ER PT J AU Schormann, N Pal, B Senkovich, O Carson, M Howard, A Smith, C DeLucas, L Chattopadhyay, D AF Schormann, N Pal, B Senkovich, O Carson, M Howard, A Smith, C DeLucas, L Chattopadhyay, D TI Crystal structure of Trypanosoma cruzi pteridine reductase 2 in complex with a substrate and an inhibitor SO JOURNAL OF STRUCTURAL BIOLOGY LA English DT Article DE pteridine salvage; methotrexate; dihydrofolate; PTR1; PTR2; Chagas' disease ID LIVER DIHYDROFOLATE-REDUCTASE; LEISHMANIA-TARENTOLAE; PTR1; CHEMOTHERAPY; RESISTANCE; PROTEIN; GENE; METABOLISM; REPLACEMENT; REFINEMENT AB Reduced pteridines are required for a number of important cellular functions. Trypanosomatid parasites, unlike their mammalian hosts, are pteridine auxotrophs and salvage the precursor pteridines from the host and reduce them to the respective biologically active tetrahydro forms using parasite-encoded enzymes. These enzymes may offer selective drug targets. In Leishmania, pteridine reductase 1 (PTR1), the primary enzyme for reducing pterins, is also responsible for resistance to antifolate drugs. Typically, PTR1 is more active with fully oxidized biopterin and folate than with their reduced counterparts. We have identified an enzyme, TcPTR2 of Trypanosoma cruzi, which though very similar to PTR1 in its primary sequence, can reduce only dihydrobiopterin and dihydrofolate and not oxidized pteridines. The structures of an inhibitor (methotrexate) and a substrate (dihydrofolate) complex of this enzyme demonstrate that the orientation of the substrate and the inhibitor in the active site of TePTR2 are different from each other. However, the orientation of each ligand is similar to that of the corresponding ligand in Leishmania major PTR1 complexes. (C) 2005 Elsevier Inc. All rights reserved. C1 Univ Alabama, Ctr Biophys Sci & Engn, Birmingham, AL 35294 USA. Argonne Natl Lab, Adv Photon Source, Ind Macromol Crystallog Assoc, Argonne, IL 60439 USA. Univ Alabama, Div Geog Med, Birmingham, AL 35294 USA. RP Chattopadhyay, D (reprint author), Univ Alabama, Ctr Biophys Sci & Engn, Birmingham, AL 35294 USA. EM debasish@cbse.uab.edu NR 45 TC 11 Z9 11 U1 0 U2 1 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 OCT PY 2005 VL 152 IS 1 BP 64 EP 75 DI 10.1016/j.jsb.2005.07.008 PG 12 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 974DU UT WOS:000232572300006 PM 16168672 ER PT J AU Candy, JV Poggio, AJ Chambers, DH Guidry, BL Robbins, CL Kent, CA AF Candy, JV Poggio, AJ Chambers, DH Guidry, BL Robbins, CL Kent, CA TI Multichannel time-reversal processing for acoustic communications in a highly reverberant environment SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID NONCOHERENT UNDERWATER COMMUNICATIONS; PHASE-CONJUGATION; SHALLOW-WATER; PULSE-COMPRESSION; FILTER; OCEAN; CHANNELS AB The development of time-reversal (T/R) communication systems is a recent signal processing research area dominated by applying T/R techniques to communicate in hostile environments. The fundamental concept is based on time-reversing the impulse response or Green's function characterizing the uncertain communications channel to mitigate deleterious dispersion and multipath effects. In this paper, we extend point-to-point to array-to-point communications by first establishing the basic theory to define and solve the underlying multichannel communications problem and then developing various realizations of the resulting T/R receivers. We show that not only do these receivers perform well in a hostile environment, but they also can be implemented with a "1 bit" analog-to-digital converter design structure. We validate these results by performing proof-of-principle acoustic communications experiments in air. It is shown that the resulting T/R receivers are capable of extracting the transmitted coded sequence from noisy microphone array measurements with zero-bit error. (c) 2005 Acoustical Society of America. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. EM candy1@llnl.gov NR 35 TC 4 Z9 5 U1 0 U2 3 PU ACOUSTICAL SOC AMER AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0001-4966 EI 1520-8524 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD OCT PY 2005 VL 118 IS 4 BP 2339 EP 2354 DI 10.1121/1.2011167 PG 16 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA 976DJ UT WOS:000232712700029 PM 16266157 ER PT J AU Kang, S Goyal, A Leonard, KJ Rutter, NA Lee, DF Kroeger, DM Paranthaman, MP AF Kang, S Goyal, A Leonard, KJ Rutter, NA Lee, DF Kroeger, DM Paranthaman, MP TI High critical current YBa2Cu3O7-delta thick films on improved rolling-assisted biaxially textured substrates (RABiTS (TM)) SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID CRITICAL-CURRENT DENSITY; LASER DEPOSITION; DEPENDENCE AB YBa2Cu3O7-delta (YBCO) films with thicknesses ranging from 1.0 to 6.4 mu m were deposited by pulsed laser deposition on rolling-assisted biaxially textured substrates (RABiTS). The RABiTS were of the configuration CeO2/YSZ/Y2O3/Ni-3 at.% W. As the YBCO film thickness increased, I-c continued to increase and reached similar to 300 A/cm width for a 4.3 mu m-thick YBCO film. Commonly observed mechanisms for J(c) decrease with increasing YBCO film thickness were not observed. Homogeneous microstructures obtained in even the thickest YBCO films, suggest that the I-c/width can still be enhanced considerably. C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Kang, S (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA. EM skang@ornl.gov RI Paranthaman, Mariappan/N-3866-2015 OI Paranthaman, Mariappan/0000-0003-3009-8531 NR 15 TC 11 Z9 11 U1 0 U2 4 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD OCT PY 2005 VL 88 IS 10 BP 2677 EP 2680 DI 10.1111/j.1551-2916.2005.00375.x PG 4 WC Materials Science, Ceramics SC Materials Science GA 964HD UT WOS:000231869100002 ER PT J AU DiAntonio, CB Ewsuk, KG Bencoe, D AF DiAntonio, CB Ewsuk, KG Bencoe, D TI Extension of master sintering curve theory to organic decomposition SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID DIFFUSION; BOUNDARY; SOLIDS; MODEL AB The ability to predict and control organic decomposition of a material under arbitrary thermal treatments is one of the main objectives of thermogravimetric studies. The development of this ability provides significant potential to ensure reliability and reproducibility for a given processing method and can be used in planning optimized thermal treatment strategies. Based on this report, the master sintering curve theory has been successfully extended to similar kinetically controlled phenomena. The theory has been applied to organic decomposition reaction kinetics to develop a master organic decomposition curve. The fundamental kinetics are assumed to be governed by an Arrheniustype reaction rate, making master sintering and decomposition curves analogous to one another. The formulation and construction of a master decomposition curve are given in this paper. Simultaneous thermogravimetric and differential thermal analysis of a low-temperature co-fire glass/ceramic dielectric tape (Dupont 951 Green Tape (TM)) is analyzed and used to demonstrate this new concept. The results reveal two independent organic decomposition reactions, the first occurring at approximate to 245 degrees C and the second at approximate to 365 degrees C. The analysis is used to produce a master decomposition curve and to calculate the activation energy for these reactions, at 86 +/- 6 and 142 +/- 4 kJ/mol, respectively. In addition, the weight loss of product and the rate of decomposition can be predicted under varying thermal paths (time-temperature trajectories) following a minimal set of preliminary experiments. C1 Sandia Natl Labs, Ceram Mat Dept, Albuquerque, NM 87106 USA. RP DiAntonio, CB (reprint author), Sandia Natl Labs, Ceram Mat Dept, Albuquerque, NM 87106 USA. EM cbdiant@sandia.gov NR 15 TC 11 Z9 11 U1 1 U2 6 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD OCT PY 2005 VL 88 IS 10 BP 2722 EP 2728 DI 10.1111/j.15551-2916.2005.00517.x PG 7 WC Materials Science, Ceramics SC Materials Science GA 964HD UT WOS:000231869100009 ER PT J AU Li, CP Akinc, M Wiench, J Pruski, M Schilling, CH AF Li, CP Akinc, M Wiench, J Pruski, M Schilling, CH TI Relationship between water mobility and viscosity of nanometric alumina suspensions SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID NUCLEAR-MAGNETIC-RESONANCE; NANOPARTICLE SUSPENSIONS; RHEOLOGICAL PROPERTIES; HETEROGENEOUS SYSTEMS; PROTEIN HYDRATION; RELAXATION; SURFACE; O-17; DISPERSIONS; POWDER AB Addition of fructose has been shown to reduce the viscosity of aqueous suspensions of nanometric alumina powders. Highly concentrated and flowable aqueous nanometric alumina suspensions were achieved by fructose addition. Oxygen-17 nuclear magnetic resonance spectroscopy was used to investigate the relaxation time and the molecular mobility of water in the suspensions with and without fructose. It was found that a significant fraction of water is bound to the surface with lower mobility. Average water mobility increases and the viscosity of the suspension decreases with fructose addition, both of which are because of displacement of water from the alumina surface by fructose molecules. The results were related to rheological behavior of the suspensions. C1 Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Saginaw Valley Stat Univ, Dept Mech Engn, University Pk, MI 48710 USA. RP Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. EM makinc@iastate.edu NR 44 TC 17 Z9 17 U1 2 U2 9 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0002-7820 EI 1551-2916 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD OCT PY 2005 VL 88 IS 10 BP 2762 EP 2768 DI 10.1111/j.1551-2916.2005.00535.x PG 7 WC Materials Science, Ceramics SC Materials Science GA 964HD UT WOS:000231869100015 ER PT J AU Thornton, J Slater, S Almer, J AF Thornton, J Slater, S Almer, J TI The measurement of residual strains within thermal barrier coatings using high-energy x-ray diffraction SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article; Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc ID AIRCRAFT ENGINES; STRESS AB The residual strains through the entire thickness of the zirconia layer of pristine and heat-treated thermal barrier coatings (TBCs) were mapped to help elucidate the failure mechanisms of TBCs. The strains were measured using 80.72 keV synchrotron radiation and a transmission geometry. The heat-treated TBC showed that a compressive strain formed in the zirconia layer of the TBC on cooling but this strain was diluted and reversed by the oxidation-driven expansion of the underlying metals. It also showed large (0.0024) out-of-plane tensile strains in the zirconia layer just above its interface with a thick underlying oxide layer. C1 Def Sci & Technol Org, Port Melbourne, Vic 3207, Australia. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Thornton, J (reprint author), Def Sci & Technol Org, Port Melbourne, Vic 3207, Australia. EM john.thornton@dsto.defence.gov.au NR 31 TC 12 Z9 13 U1 1 U2 10 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD OCT PY 2005 VL 88 IS 10 BP 2817 EP 2825 DI 10.1111/j.1551-2916.2005.00331.x PG 9 WC Materials Science, Ceramics SC Materials Science GA 964HD UT WOS:000231869100023 ER PT J AU Berryman, JG AF Berryman, JG TI Bounds and self-consistent estimates for elastic constants of random polycrystals with hexagonal, trigonal, and tetragonal symmetries SO JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS LA English DT Article DE polycrystalline material; composite materials; mictrostructure; anisotropic materials ID HASHIN-SHTRIKMAN BOUNDS; DETERMINING EFFECTIVE MODULI; VARIATIONAL APPROACH; COMPOSITE-MATERIALS; SHEAR MODULUS; MEDIA; MODEL; CONDUCTIVITY; BERECHNUNG; PRINCIPLES AB Peselnick, Meister, and Watt have developed rigorous methods for bounding elastic constants of random polycrystals based on the Hashin-Shtrikman variational principles. In particular, a fairly complex set of equations that amounts to an algorithm has been presented previously for finding the bounds on effective elastic moduli for polycrystals having hexagonal, trigonal, and tetragonal symmetries. A more analytical approach developed here, although based on the same ideas, results in a new set of compact formulas for all the cases considered. Once these formulas have been established, it is then straightforward to perform what could be considered an analytic continuation of the formulas (into the region of parameter space between the bounds) that can subsequently be used to provide self-consistent estimates for the elastic constants in all cases. This approach is very similar in spirit but differs in its details from earlier work of Willis, showing how Hashin-Shtrikman bounds and certain classes of self-consistent estimates may be related. These self-consistent estimates always lie within the bounds for physical choices of the crystal elastic constants and for all the choices of crystal symmetry considered. For cubic symmetry, the present method reproduces the self-consistent estimates obtained earlier by various authors, but the formulas for both bounds and estimates are generated in a more symmetric form. Numerical values of the estimates obtained this way are also very comparable to those found by the Gubernatis and Krumhansl coherent potential approximation (or CPA), but do not require, computations of scattering coefficients. (c) 2005 Elsevier Ltd. All rights reserved. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Berryman, JG (reprint author), Lawrence Livermore Natl Lab, POB 808 L-200, Livermore, CA 94551 USA. EM berryman1@llnl.gov RI Berryman, James/A-9712-2008 NR 74 TC 68 Z9 69 U1 2 U2 21 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0022-5096 J9 J MECH PHYS SOLIDS JI J. Mech. Phys. Solids PD OCT PY 2005 VL 53 IS 10 BP 2141 EP 2173 DI 10.1016/j.jmps.2005.05.004 PG 33 WC Materials Science, Multidisciplinary; Mechanics; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA 969UL UT WOS:000232260400001 ER PT J AU Harada, A Kawasaki, S Kotegawa, H Kitaoka, Y Haga, Y Yamamoto, E Onuki, Y Itoh, KM Haller, EE Harima, H AF Harada, A Kawasaki, S Kotegawa, H Kitaoka, Y Haga, Y Yamamoto, E Onuki, Y Itoh, KM Haller, EE Harima, H TI Cooperative phenomenon of ferromagnetism and unconventional superconductivity in UGe2: A Ge-73-NQR study under pressure SO JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN LA English DT Article DE itinerant ferromagnetism; unconventional superconductivity; UGe2; NOR under pressure; first-order phase transition ID COEXISTENCE AB We report on a cooperative phenomenon of ferromagnetism and unconventional superconductivity (SC) in UGe2 through the measurements of Ge-73 nuclear-quadrupole-resonance (NQR) under pressure (P). The NQR spectra evidenced phase separation into ferromagnetic and paramagnetic phases in the vicinity of P-c similar to 1.5 GPa, pointing to a first-order transition. The measurements of nuclear-spin-lattice-relaxation-rate I/T-1 revealed that SC emerges under the background of ferromagnetism, but not of the paramagnetic phase. C1 Osaka Univ, Grad Sch Engn Sci, Dept Mat Engn Sci, Toyonaka, Osaka 5608531, Japan. Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan. Osaka Univ, Grad Sch Sci, Dept Phys, Toyonaka, Osaka 5600043, Japan. Keio Univ, Dept Appl Phys & Physicoinformat, Yokohama, Kanagawa 2238522, Japan. Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Kobe Univ, Fac Sci, Dept Phys, Kobe, Hyogo 6578501, Japan. RP Harada, A (reprint author), Osaka Univ, Grad Sch Engn Sci, Dept Mat Engn Sci, Toyonaka, Osaka 5608531, Japan. RI KAWASAKI, Shinji/B-2586-2011; Itoh, Kohei/C-5738-2014 NR 13 TC 13 Z9 13 U1 0 U2 2 PU PHYSICAL SOC JAPAN PI TOKYO PA YUSHIMA URBAN BUILDING 5F, 2-31-22 YUSHIMA, BUNKYO-KU, TOKYO, 113-0034, JAPAN SN 0031-9015 J9 J PHYS SOC JPN JI J. Phys. Soc. Jpn. PD OCT PY 2005 VL 74 IS 10 BP 2675 EP 2678 DI 10.1143/JPSJ.74.2675 PG 4 WC Physics, Multidisciplinary SC Physics GA 987SM UT WOS:000233537600008 ER PT J AU WoldeGabriel, G Hart, WK Katoh, S Beyene, Y Suwa, G AF WoldeGabriel, G Hart, WK Katoh, S Beyene, Y Suwa, G TI Correlation of Plio-Pleistocene Tephra in Ethiopian and Kenyan rift basins: Temporal calibration of geological features and hominid fossil records SO JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH LA English DT Article DE tephra; rift; correlation; hominids; Ethiopia; Kenya ID KOOBI-FORA; KONSO FORMATION; TURKANA BASIN; AMARO HORST; TUFF; VOLCANISM; AGES AB The 200-m-thick fossiliferous Konso Formation and overlying terrace deposits, which crop out at the end of the southern sector of the Main Ethiopian Rift (MER), contain more than 30 distal tephra layers. Local and regional tephra correlations of more than 20 tephra units were established using major and trace element data of discrete and purified bulk glass samples within the Konso study area. Eleven correlative marker tuffs were recognized in stratigraphic sections of both the Konso Formation and the Omo-Turkana Basin sediments in southern Ethiopia and northern Kenya. The Turoha, Hope, Ivory, Bright White, and Boleshe Tuffs in the Konso Formation, and the Upper White Tuff in the overlying terrace deposits are securely correlated with the KBS, Akait, Lokapetamoi, Chari, Lower Nariokotome, and Silbo Tuffs of the Omo-Turkana Basin, using least mobile major elements (CaO, Fe2O3*, and TiO2) and geochronology. Preliminary correlations are also suggested between the Konso Formation distal tephra and proximal units of the Quaternary caldera-forming silicic centers in the central sector of the MER. The strongly peralkaline tuffs of the Konso Formation are compositionally similar to proximal eruptions mostly located along the Quaternary axial rift zone of the southern, central, and northern sectors of the MER. The tephra correlation Provides information about the temporal and spatial features of the volcanic and tectonic processes recorded in the evolving basins. Thickness and sedimentation rate were determined for both the Konso Formation and the Omo-Turkana Basin sections, measured between the Turoha (=KBS; 1.91 +/- 0.03 Ma) and the Bright White (=Chari; 1.40 +/- 0.02 Ma) Tuffs. Although the lithostratigraphic sequence at the Konso study area is younger, sedimentation rate within the Konso Formation was comparable to that of the Koobi Fora Formation, higher in the Nachukui Formation, and lower in the Shungura Formation. Local and regional differences in thickness and sedimentation rates within the Plio-Pleistocene deposits of the Konso, Shungura, Nachukui, and Koobi Fora Formations may be attributed to erosion associated with increased topographic gradients maintained by continued subsidence mostly along axial fault zones of basins and uplift along the margins of the broadly rifted zone of the Omo-Turkana Basin and the southern sector of the MER. Published by Elsevier B.V. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Miami Univ, Dept Geol, Oxford, OH 45056 USA. Hyogo Museum Nat & Human Act, Div Nat Hist, Sanda 6691546, Japan. Minist Youth Sports & Culture, Dept Archaeol & Anthropol, ARCCH, Addis Ababa, Ethiopia. Univ Tokyo, Univ Museum, Bunkyo Ku, Tokyo 1130033, Japan. RP WoldeGabriel, G (reprint author), Los Alamos Natl Lab, EES-6-D462, Los Alamos, NM 87545 USA. EM wgiday@lanl.gov NR 54 TC 22 Z9 22 U1 0 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0273 J9 J VOLCANOL GEOTH RES JI J. Volcanol. Geotherm. Res. PD OCT 1 PY 2005 VL 147 IS 1-2 BP 81 EP 108 DI 10.1016/j.jvolgeores.2005.03.008 PG 28 WC Geosciences, Multidisciplinary SC Geology GA 973KQ UT WOS:000232521800004 ER PT J AU Milonni, PW Boyd, RW AF Milonni, PW Boyd, RW TI Recoil and photon momentum in a dielectric SO LASER PHYSICS LA English DT Article ID ELECTROMAGNETIC ENERGY; RADIATION PRESSURE AB We consider the recoil momentum of a spontaneously emitting atom in a dispersive dielectric, first from a microscopic approach, in which the dielectric is treated as a collection of atoms and the field is quantized in vacuum, and, then, from the macroscopic approach of quantizing the field in the dielectric. The atom's recoil momentum differs from both the Abraham and Minkowski forms of the field momentum, and this difference is explained in terms of a dispersive contribution to the momentum acquired by the medium. C1 Los Alamos Natl Lab, Div Theoret, TDOT, Los Alamos, NM 87545 USA. Univ Rochester, Inst Opt, Rochester, NY 14627 USA. RP Milonni, PW (reprint author), Los Alamos Natl Lab, Div Theoret, TDOT, Los Alamos, NM 87545 USA. EM pwm@lanl.gov NR 15 TC 13 Z9 13 U1 0 U2 4 PU INTERPERIODICA PI BIRMINGHAM PA PO BOX 1831, BIRMINGHAM, AL 35201-1831 USA SN 1054-660X J9 LASER PHYS JI Laser Phys. PD OCT PY 2005 VL 15 IS 10 BP 1432 EP 1438 PG 7 WC Optics; Physics, Applied SC Optics; Physics GA 978YS UT WOS:000232909600013 ER PT J AU Fallon, SJ Guilderson, TP AF Fallon, SJ Guilderson, TP TI Extracting growth rates from the nonlaminated coralline sponge Astrosclera willeyana using bomb radiocarbon SO LIMNOLOGY AND OCEANOGRAPHY-METHODS LA English DT Article ID SCLEROSPONGES; PACIFIC; RECORD; VARIABILITY; CARBON; OXYGEN AB The isotopic and chemical composition of the skeletons of hermatypic reef building corals have been used for many years to generate proxy time series records of surface oceanic conditions ( water temperature and salinity). These types of records have recently been constructed using coralline sponges. Because they are found in a greater range of depths, coralline sponges have the potential to fill in gaps in our understanding of subsurface oceanographic variability. Using coralline sponges together with surface corals, we can obtain a three-dimensional (3D) picture of oceanographic/climate variability. However, coralline sponges have one disadvantage compared to hermatypic reef building coral proxies in that most do not have annual density bands and need to be radiometrically dated for age determination. We have measured radiocarbon in 1 mm increments from Astrosclera willeyana sponges collected off the Central and Northern Great Barrier Reef (GBR) and from Truk in the Caroline Islands and compared these radiocarbon profiles to independently dated coral radiocarbon records to examine growth rate variability. Growth rates of the GBR sponges averaged 1.2 +/- 0.3 and 1.0 +/- 0.3 mm y(-1) at north and central sites respectively, but the growth rate can vary by a factor of two over the life span of the sponge. The growth rate of the Truk sponge averaged 1.2 +/- 0.1 mm y(-1). These growth rates are faster than those measured for other Astrosclera willeyana sponges (0.2-0.7 mm y(-1)) (Moore et al. 2000; Worheide 1998). C1 Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA. Univ Calif Santa Cruz, Dept Ocean Sci, Santa Cruz, CA 95064 USA. Univ Calif Santa Cruz, Inst Marine Sci, Santa Cruz, CA 95064 USA. RP Fallon, SJ (reprint author), Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA. RI Fallon, Stewart/G-6645-2011 OI Fallon, Stewart/0000-0002-8064-5903 NR 17 TC 9 Z9 9 U1 1 U2 2 PU AMER SOC LIMNOLOGY OCEANOGRAPHY PI WACO PA 5400 BOSQUE BLVD, STE 680, WACO, TX 76710-4446 USA J9 LIMNOL OCEANOGR-METH JI Limnol. Oceanogr. Meth. PD OCT PY 2005 VL 3 BP 455 EP 461 PG 7 WC Limnology; Oceanography SC Marine & Freshwater Biology; Oceanography GA 022EF UT WOS:000236036900002 ER PT J AU Vendan, M Molian, P Bastawros, A Anderegg, J AF Vendan, M Molian, P Bastawros, A Anderegg, J TI Ultra-short pulsed laser deposition and patterning of SiC thin films for MEMS fabrication SO MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING LA English DT Article DE thin film; ablation; pulsed laser deposition; chemical vapor deposition; actuator; silicon carbide; micro-electro-mechanical systems; semiconductor ID FEMTOSECOND LASER; SILICON-CARBIDE; CARBON-FILMS; FROZEN ACETONE; 3C-SIC FILMS; ABLATION; GROWTH; SAPPHIRE; DENSITY AB A Ti:Sapphire (IR 800-nm) femtosecond (fs) pulsed laser was used to ablate a sputtering grade of silicon carbide (SiC) in an ultra-high vacuum chamber. The laser-induced plasma species were then driven and grown to form 3C-SiC films of about I pm thick on single crystal silicon wafers at 20 degrees C (room temperature) and 500 degrees C. Scanning electron microscopy, atomic force microscopy, X-ray photoelectron microscopy, X-ray diffraction and nanoindentation were used to characterize the structure, composition, thickness and properties of the SiC films. Results of the femtosecond-pulse laser deposited (fs-PLD) films were compared with those obtained by atmospheric pressure chemical vapor deposition (APCVD) and nanosecond-pulse laser (excimer laser at 248-nm) deposition (ns-PLD). The distinctive features of fs-PLD films are their extremely smooth surfaces, stoichiometry, amorphous structure and low defect density compared to APCVD films, along with better film quality and higher growth rates than ns-PLD films. In addition to film growth studies, a SiC microgripper (to grab 20-mu m-sized objects) was micromachined by use of the fs-pulsed laser to demonstrate the utility of ultra-short PLD in SiC-device fabrication. (C) 2006 Elsevier Ltd. All rights reserved. C1 Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA. US DOE, Ames Lab, Ames, IA 50011 USA. RP Vendan, M (reprint author), Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA. EM monica@iastate.edu RI Bastawros, Ashraf/L-8057-2013 OI Bastawros, Ashraf/0000-0003-4547-8588 NR 44 TC 11 Z9 12 U1 3 U2 16 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1369-8001 J9 MAT SCI SEMICON PROC JI Mater. Sci. Semicond. Process PD OCT PY 2005 VL 8 IS 6 BP 630 EP 645 DI 10.1016/j.mssp.2006.02.002 PG 16 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA 057OV UT WOS:000238606000003 ER PT J AU Ahzi, S M'Guil, S Youssef, H Khaleel, M Gracio, J AF Ahzi, S M'Guil, S Youssef, H Khaleel, M Gracio, J TI Non-linear viscoplastic polycrystalline intermediate modelling for texture evolution in FCC metals: compression test SO MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK LA English DT Article; Proceedings Paper CT 1st International Conference on Diffusion in Solids and Liquids CY JUL 06-08, 2005 CL Aveiro, PORTUGAL DE crystallographic texture; polycrystalline plasticity; intermediate linear and non-linear models ID PLASTICITY AB In this paper, we report predicted results for texture evolution in FCC metals under uniaxial compression test. These results are computed using a newly developed nonlinear rigid viscoplastic crystal plasticity model based on an intermediate interaction law. This interaction law is formulated by the minimization of a normalized error function which combines the local fields' deviations, from the macroscopic ones, obtained by the classical upper bound (Taylor) and lower bound (Sachs) models. This interaction law leads to results lying between the upper and lower bound approaches by simply varying a scalar weight function phi (0 < phi < 1). A simple interaction law based on the linear mixture of the fields from the Taylor and Sachs models is also used. The results from these both the linear and nonlinear intermediate approaches are shown in terms of texture evolution under uniaxial compression. These results are discussed in comparison with the well known experimental textures in compressed FCC metals. Finally, we show that the linear intermediate approach yields fairly acceptable texture predictions under compression and that the fully non-linear approach predicts much better results. C1 Univ Strasbourg 1, CNRS, IMFS UMR 7507, F-67000 Strasbourg, France. Pacific NW Natl Lab, Computat Sci & Math Div, Richland, WA 99352 USA. Univ Aveiro, Dept Mech Engn, P-3800 Aveiro, Portugal. RP M'Guil, S (reprint author), Univ Strasbourg 1, CNRS, IMFS UMR 7507, 2 Rue Boussingault, F-67000 Strasbourg, France. EM siham.mguil@ipst-ulp.u-strasbg.fr RI Research Unit, TEMA/H-9264-2012; Group, GAME/B-3464-2014; OI khaleel, mohammad/0000-0001-7048-0749; Gracio, Jose/0000-0002-0343-4387 NR 7 TC 4 Z9 4 U1 0 U2 3 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0933-5137 J9 MATERIALWISS WERKST JI Materialwiss. Werkstofftech. PD OCT PY 2005 VL 36 IS 10 BP 533 EP 537 DI 10.1002/mawe.200500900 PG 5 WC Materials Science, Multidisciplinary SC Materials Science GA 982RD UT WOS:000233178400015 ER PT J AU Bouhattate, J Li, D Garmestani, H Ahzi, S Khaleel, M AF Bouhattate, J Li, D Garmestani, H Ahzi, S Khaleel, M TI On improving predictions of texture evolution using processing path model SO MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK LA English DT Article; Proceedings Paper CT 1st International Conference on Diffusion in Solids and Liquids CY JUL 06-08, 2005 CL Aveiro, PORTUGAL DE processing path; materials design; texture evolution; microstructure; property ID PLASTIC-DEFORMATION; DESIGN AB The processing path model based on the conservation principle in the orientation space allows us to optimize processing path from a given initial state to a desired final microstructure for polycrystalline materials. This model uses texture coefficients in spherical harmonics expansion as descriptors to represent the texture state of polycrystalline materials. In this work, the effect of increasing the number of texture coefficients used in the series expansion (decided by l(max)) on the prediction accuracy of texture evolution is investigated. C1 Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. Florida State Univ, Dept Mech Engn, Tallahassee, FL 32310 USA. Univ Strasbourg 1, Strasbourg, France. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Bouhattate, J (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, 771 Ferst Dr NW, Atlanta, GA 30332 USA. OI khaleel, mohammad/0000-0001-7048-0749 NR 11 TC 2 Z9 2 U1 0 U2 1 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0933-5137 J9 MATERIALWISS WERKST JI Materialwiss. Werkstofftech. PD OCT PY 2005 VL 36 IS 10 BP 538 EP 540 DI 10.1002/mawe.200500901 PG 3 WC Materials Science, Multidisciplinary SC Materials Science GA 982RD UT WOS:000233178400016 ER PT J AU Beyerlein, IJ Tome, CN AF Beyerlein, IJ Tome, CN TI Modeling compression reloads in copper prestrained by equal channel angular extrusion (ECAE) SO MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK LA English DT Article; Proceedings Paper CT 1st International Conference on Diffusion in Solids and Liquids CY JUL 06-08, 2005 CL Aveiro, PORTUGAL DE anisotropy; ECAE; latent hardening; strain path change; copper ID TEXTURE DEVELOPMENT; FLOW-STRESS; POLYCRYSTALS; SUBSTRUCTURE; DEFORMATION; SIMULATION; EVOLUTION AB When copper is deformed to large strains, as in Equal Channel Angular Extrusion (ECAE), its texture and microstructure change drastically and lead to plastic anisotropy upon reloading. In this work, we develop a multi-scale model that accounts for both texture and subgrain microstructural evolution. Specifically the evolution of directional anisotropy in the single crystals is induced by the formation of planar dislocation walls. The model successfully predicts the flow responses of copper strained by a single pass of ECAE and subsequently compressed in each of three orthogonal directions. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Tome, CN (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, MST-8,MS G755, Los Alamos, NM 87545 USA. EM tome@lanl.gov RI Tome, Carlos/D-5058-2013; Beyerlein, Irene/A-4676-2011 NR 17 TC 1 Z9 1 U1 0 U2 0 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0933-5137 J9 MATERIALWISS WERKST JI Materialwiss. Werkstofftech. PD OCT PY 2005 VL 36 IS 10 BP 541 EP 545 DI 10.1002/mawe.200500909 PG 5 WC Materials Science, Multidisciplinary SC Materials Science GA 982RD UT WOS:000233178400017 ER PT J AU Gjorgjieva, J Smith, K Chowell, G Sanchez, F Snyder, J Castillo-Chavez, C AF Gjorgjieva, J Smith, K Chowell, G Sanchez, F Snyder, J Castillo-Chavez, C TI The role of vaccination in the control of SARS SO MATHEMATICAL BIOSCIENCES AND ENGINEERING LA English DT Article DE severe acute respiratory syndrome (SARS); mathematical model; vaccination; contact tracing; isolation ID ACUTE RESPIRATORY SYNDROME; HONG-KONG; TRANSMISSION DYNAMICS; PROTECTIVE IMMUNITY; CORONAVIRUS; OUTBREAK; AGENT AB We assess pre-outbreak and during-outbreak vaccination as control strategies for SARS epidemics using a mathematical model that includes susceptible, latent (traced and untraced), infectious, isolated and recovered individuals. Scenarios focusing on policies that include contact tracing and levels of self-isolation among untraced infected individuals are explored. Bounds on the proportion of pre-outbreak successfully vaccinated individuals are provided using the the basic reproductive number. Uncertainty and sensitivity analyses on the reproductive number are carried out. The final epidemic size under different vaccination scenarios is computed. C1 Harvey Mudd Coll, Dept Math, Claremont, CA 91711 USA. Clarion Univ Pennsylvania, Dept Math, Clarion, PA 16214 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Cornell Univ, BSCB, Ithaca, NY 14853 USA. Georgia Inst Technol, Coll Sci, Atlanta, GA 30332 USA. Arizona State Univ, Dept Math & Stat, Tempe, AZ 85287 USA. RP Gjorgjieva, J (reprint author), Harvey Mudd Coll, Dept Math, 340 E Foothill Blvd, Claremont, CA 91711 USA. EM chowell@lanl.gov RI Chowell, Gerardo/A-4397-2008; Chowell, Gerardo/F-5038-2012; Castillo-Chavez, Carlos/E-1412-2014; OI Chowell, Gerardo/0000-0003-2194-2251; Castillo-Chavez, Carlos/0000-0002-1046-3901; Gjorgjieva, Julijana/0000-0001-7118-4079 NR 24 TC 4 Z9 4 U1 0 U2 1 PU AMER INST MATHEMATICAL SCIENCES PI SPRINGFIELD PA PO BOX 2604, SPRINGFIELD, MO 65801-2604 USA SN 1547-1063 J9 MATH BIOSCI ENG JI Math. Biosci. Eng. PD OCT PY 2005 VL 2 IS 4 BP 753 EP 769 PG 17 WC Mathematical & Computational Biology SC Mathematical & Computational Biology GA 973VC UT WOS:000232549700005 PM 20369951 ER PT J AU Jung, E Lenhart, S Protopopescu, V Babbs, CF AF Jung, E Lenhart, S Protopopescu, V Babbs, CF TI Optimal control theory applied to a difference equation model for cardiopulmonary resuscitation SO MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES LA English DT Article DE cardiopulmonary resuscitation; difference equation; optimal control; mechanical CPR; cardiopump ID ACTIVE COMPRESSION-DECOMPRESSION; EXTERNAL CARDIAC MASSAGE; ACD-CPR; ARREST; PHYSIOLOGY; SUPPORT; CHEST; FLOW AB The techniques of optimal control are applied to a validated blood circulation model of cardiopulmonary resuscitation (CPR), consisting of a system of seven difference equations. In this system, the nonhomogeneous forcing term is the externally applied chest pressure acting as the "control". We seek to maximize the blood flow, as measured by the pressure differences between the thoracic aorta and the superior vena cava. The new aspect in this application is that the control values from the two previous time steps are used to calculate the pressures (state variables) at the current time step. We prove the existence and uniqueness of the optimal control and provide a new CPR strategy, with increased blood flow. The characterization of the optimal control is given in terms of the solutions of the circulation model and of the corresponding adjoint system. The numerical results show a significant increase in the blood flow as compared with standard CPR. C1 Konkuk Univ, Dept Math, Seoul 143701, South Korea. Univ Tennessee, Dept Math, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. Purdue Univ, W Lafayette, IN 47907 USA. RP Jung, E (reprint author), Konkuk Univ, Dept Math, Seoul 143701, South Korea. EM junge@konkuk.ac.kr; lenhart@math.utk.edu; vvp@ornl.gov; babbs@purdue.edu NR 28 TC 15 Z9 16 U1 0 U2 4 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0218-2025 J9 MATH MOD METH APPL S JI Math. Models Meth. Appl. Sci. PD OCT PY 2005 VL 15 IS 10 BP 1519 EP 1531 DI 10.1142/S0218202505000856 PG 13 WC Mathematics, Applied SC Mathematics GA 974AB UT WOS:000232562600005 ER PT J AU Brezzi, F Lipnikov, K Simoncini, V AF Brezzi, F Lipnikov, K Simoncini, V TI A family of mimetic finite difference methods on polygonal and polyhedral meshes SO MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES LA English DT Article DE finite difference; compatible discretizations; polyhedral meshes ID DIFFUSION DISCRETIZATION SCHEME; EQUATIONS AB A family of inexpensive discretization schemes for diffusion problems on unstructured polygonal and polyhedral meshes is introduced. The material properties are described by a full tensor. The theoretical results are confirmed with numerical experiments. C1 Univ Pavia, Dept Math, Pavia, Italy. Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA. Univ Bologna, Dipartimento Matemat, I-40127 Bologna, Italy. IMATI CNR, Pavia, Italy. CIRSA, Ravenna, Italy. RP Lipnikov, K (reprint author), Univ Pavia, Dept Math, Pavia, Italy. EM brezzi@imati.cnr.it; lipnikov@lanl.gov; valeria@dm.unibo.it RI Brezzi, Franco/D-4362-2009 OI Brezzi, Franco/0000-0003-4715-5475 NR 17 TC 147 Z9 151 U1 0 U2 8 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0218-2025 J9 MATH MOD METH APPL S JI Math. Models Meth. Appl. Sci. PD OCT PY 2005 VL 15 IS 10 BP 1533 EP 1551 DI 10.1142/S0218202505000832 PG 19 WC Mathematics, Applied SC Mathematics GA 974AB UT WOS:000232562600006 ER PT J AU Patil, CK Mian, IS Campisi, J AF Patil, CK Mian, IS Campisi, J TI The thorny path linking cellular senescence to organismal aging SO MECHANISMS OF AGEING AND DEVELOPMENT LA English DT Article DE cellular senescence; telomeres; tumor suppression; stress resistance ID REPLICATIVE LIFE-SPAN; HUMAN DIPLOID CELLS; HUMAN FIBROBLASTS; IN-VITRO; TELOMERASE ACTIVITY; STRESS RESISTANCE; P16; P53; P16(INK4A); TISSUES C1 Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA. Buck Inst Age Res, Novato, CA 94545 USA. RP Campisi, J (reprint author), Lawrence Berkeley Natl Lab, Div Life Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM jcampisi@lbl.gov NR 56 TC 58 Z9 61 U1 0 U2 3 PU ELSEVIER IRELAND LTD PI CLARE PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND SN 0047-6374 J9 MECH AGEING DEV JI Mech. Ageing Dev. PD OCT PY 2005 VL 126 IS 10 BP 1040 EP 1045 DI 10.1016/j.mad.2005.08.001 PG 6 WC Cell Biology; Geriatrics & Gerontology SC Cell Biology; Geriatrics & Gerontology GA 972HM UT WOS:000232444900004 PM 16153470 ER PT J AU Mao, LY Mackenzie, C Roh, JH Eraso, JM Kaplan, S Resat, H AF Mao, LY Mackenzie, C Roh, JH Eraso, JM Kaplan, S Resat, H TI Combining microarray and genomic data to predict DNA binding motifs SO MICROBIOLOGY-SGM LA English DT Article ID RHODOBACTER-SPHAEROIDES 2.4.1; PHOTOSYNTHESIS GENE-EXPRESSION; 2-COMPONENT REGULATORY SYSTEM; SIGNAL-TRANSDUCTION SYSTEM; PROMOTER-OPERATOR REGION; CYTOCHROME C(2) GENE; RESPONSE REGULATOR; ESCHERICHIA-COLI; FNRL GENE; OXYGEN REGULATION AB The ability to detect regulatory elements within genome sequences is important in understanding how gene expression is controlled in biological systems. In this work, microarray data analysis is combined with genome sequence analysis to predict DNA sequences in the photosynthetic bacterium Rhodobacter sphaeroides that bind the regulators PrrA, PpsR and FnrL. These predictions were made by using hierarchical clustering to detect genes that share similar expression patterns. The DNA sequences upstream of these genes were then searched for possible transcription factor recognition motifs that may be involved in their co-regulation. The approach used promises to be widely applicable for the prediction of cis-acting DNA binding elements. Using this method the authors were independently able to detect and extend the previously described consensus sequences that have been suggested to bind FnrL and PpsR. In addition, sequences that may be recognized by the global regulator PrrA were predicted. The results support the earlier suggestions that the DNA binding sequence of PrrA may have a variable-sized gap between its conserved block elements. Using the predicted DNA binding sequences, a whole-genome-scale analysis was performed to determine the relative importance of the interplay between the three regulators PpsR, FnrL and PrrA. Results of this analysis showed that, compared to the regulation by PpsR and FnrL, a much larger number of genes are candidates to be regulated by PrrA. The study demonstrates by example that integration of multiple data types can be a powerful approach for inferring transcriptional regulatory patterns in microbial systems, and it allowed the detection of photosynthesis-related regulatory patterns in R. sphaeroides. C1 Pacific NW Natl Lab, Computat Biol & Bioinformat Grp, Richland, WA 99352 USA. Univ Texas, Hlth Sci Ctr, Dept Microbiol & Mol Genet, Sch Med, Houston, TX 77030 USA. RP Resat, H (reprint author), Pacific NW Natl Lab, Computat Biol & Bioinformat Grp, POB 999,MS K7-90, Richland, WA 99352 USA. EM haluk.resat@pnl.gov RI Mao, Linyong/A-2873-2011 NR 44 TC 32 Z9 35 U1 0 U2 3 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 OCT PY 2005 VL 151 BP 3197 EP 3213 DI 10.1099/mic.0.28167-0 PN 10 PG 17 WC Microbiology SC Microbiology GA 973VS UT WOS:000232551300007 PM 16207904 ER PT J AU Wemhoff, AP Carey, VP AF Wemhoff, AP Carey, VP TI Molecular dynamics exploration of thin liquid films on solid surfaces. 1. Monatomic fluid films SO MICROSCALE THERMOPHYSICAL ENGINEERING LA English DT Article DE grand canonical ensemble; liquid-solid interaction; molecular dynamics; stochastic methods ID LENNARD-JONES FLUID; CONSTANT-TEMPERATURE; PRESSURE; SIMULATIONS; INTERFACE; WATER; GAS; EQUILIBRIUM; CRYSTALS; SYSTEMS AB The thickness of the interfacial region dividing bulk liquid and vapor regions is typically on the order of a few molecular diameters. Furthermore, in systems where the characteristic length scale is the same order of magnitude as the thickness of the interface such as a thin liquid film on a solid surface, behavior may be different than that for larger systems. The small thickness of such films leads to difficult experimental observation of phenomena within various regions of the film: the wall-affected region, the bulk liquid, and the liquid-vapor interfacial region. A hybrid simulation methodology is applied that combines a deterministic molecular dynamics simulation of the liquid regions with a stochastic treatment of the far-field vapor region boundary. In this simulation scheme, the imposed far-field pressure may be held fired or iterated as the simulation is advanced in time until the mass in the system stabilizes at the specified temperature, which establishes the equilibrium saturation vapor pressure for the specified temperature as dictated by the intermolecular force interaction models for the fluid and molecules near the solid surface. Simulation results are presented for an argon liquid film on a solid metallic surface. C1 Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. RP Wemhoff, AP (reprint author), Lawrence Livermore Natl Lab, POB 808,L-227, Livermore, CA 94551 USA. EM wemhoff2@llnl.gov NR 37 TC 17 Z9 17 U1 0 U2 5 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1089-3954 J9 MICROSCALE THERM ENG JI Microscale Thermophys. Eng. PD OCT-DEC PY 2005 VL 9 IS 4 BP 331 EP 349 DI 10.1080/10893950500357814 PG 19 WC Thermodynamics; Engineering, Mechanical; Nanoscience & Nanotechnology; Materials Science, Characterization & Testing; Physics, Applied SC Thermodynamics; Engineering; Science & Technology - Other Topics; Materials Science; Physics GA 003AL UT WOS:000234653900002 ER PT J AU Wemhoff, AP Carey, VP AF Wemhoff, AP Carey, VP TI Molecular dynamics exploration of thin liquid films on solid surfaces. 2. Polyatomic nonpolar fluid and water films SO MICROSCALE THERMOPHYSICAL ENGINEERING LA English DT Article DE liquid-solid interaction; molecular dynamics; stochastic methods; water ID SIMULATION AB The methodology used to simulate a monatomic film on a solid metallic surface is extended to polyatomic nonpolar fluids and water. In this extension, the wall potential is calculated in the same manner as for a monatomic fluid since the intermolecular distance is generally much larger titan the molecular size. Nonpolar films are simulated in a manner very similar to the monatomic system since no long-ranged Coulombic potentials are present. The water simulation methodology uses a corrected 3-D Ewald summation technique, but this technique limits the number of vapor molecules in the simulation domain such that the system must be equilibrated to a value far from the critical point. As a result, the lack of vapor molecules in the water system does not allow for calculation of the equilibrium saturation pressure via external pressure adjustment, but rather the simulation is run with a fixed external pressure. In this study, a diatomic nitrogen film at T/T-c = 0.55 and three water films (T = 100, 127, and 140 degrees C) were simulated. The resultant calculated bulk liquid density and surface tension compare well with ASHRAE recommended values, and these results are consistent with previous calculations for a monatomic system. C1 Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. RP Wemhoff, AP (reprint author), Lawrence Livermore Natl Lab, POB 808,L-227, Livermore, CA 94551 USA. EM wemhoff2@llnl.gov NR 17 TC 6 Z9 6 U1 0 U2 5 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1089-3954 J9 MICROSCALE THERM ENG JI Microscale Thermophys. Eng. PD OCT-DEC PY 2005 VL 9 IS 4 BP 351 EP 363 DI 10.1080/10893950500357848 PG 13 WC Thermodynamics; Engineering, Mechanical; Nanoscience & Nanotechnology; Materials Science, Characterization & Testing; Physics, Applied SC Thermodynamics; Engineering; Science & Technology - Other Topics; Materials Science; Physics GA 003AL UT WOS:000234653900003 ER PT J AU King, W AF King, W TI Introduction: Frontiers of Electron Microscopy in Materials Science SO MICROSCOPY AND MICROANALYSIS LA English DT Editorial Material C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP King, W (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH ST, NEW YORK, NY 10011-4211 USA SN 1431-9276 J9 MICROSC MICROANAL JI Microsc. microanal. PD OCT PY 2005 VL 11 IS 5 BP 377 EP 377 DI 10.1017/S14319276050725 PG 1 WC Materials Science, Multidisciplinary; Microscopy SC Materials Science; Microscopy GA 971JA UT WOS:000232378800001 ER PT J AU Kubel, C Voigt, A Schoenmakers, R Otten, M Su, D Lee, TC Carlsson, A Bradley, J AF Kubel, C Voigt, A Schoenmakers, R Otten, M Su, D Lee, TC Carlsson, A Bradley, J TI Recent advances in electron tomography: TEM and HAADF-STEM tomography for materials science and semiconductor applications SO MICROSCOPY AND MICROANALYSIS LA English DT Article; Proceedings Paper CT 9th Conference on Frontiers of Electron Microscopy in Materials Science CY OCT 05-10, 2003 CL Berkeley, CA SP Lawrence Livermore Natl Lab, Argonne Natl Lab, Lawrence Berkeley Natl Lab, Brookhaven Natl Lab, Frederick Seitz Mat Res Lab, Oak Ridge Natl Lab, Natl Sci Fdn, Univ Calif Davis DE 3D imaging; electron tomography; transmission electron microscopy (TEM); high-angle-annular-dark-field scanning transmission electron microscopy (HAADF-STEM); semiconductor devices; catalyst ID NANOMETER-SCALE; 3-DIMENSIONAL RECONSTRUCTION; ATOMIC-SCALE; ZEOLITE-Y; MICROSCOPY; CATALYSTS; RESOLUTION; PROJECTIONS; CELLS; LOCALIZATION AB Electron tomography is a well-established technique for three-dimensional structure determination of (almost) amorphous specimens in life sciences applications. With the recent advances in nanotechnology and the semiconductor industry, there is also an increasing need for high-resolution three-dimensional (313) structural information in physical sciences. In this article, we evaluate the capabilities and limitations of transmission electron microscopy (TEM) and high-angle-annular-dark-field scanning transmission electron microscopy (HAADF-STEM) tomography for the 3D structural characterization of partially crystalline to highly crystalline materials. Our analysis of catalysts, a hydrogen storage material, and different semiconductor devices shows that features with a diameter as small as 1-2 nm can be resolved in three dimensions by electron tomography. For partially crystalline materials with small single crystalline domains, bright-field TEM tomography provides reliable 3D structural information. HAADF-STEM tomography is more versatile and can also be used for high-resolution 3D imaging of highly crystalline materials such as semiconductor devices. C1 FEI Co, Applicat Lab, NL-5651 GG Eindhoven, Netherlands. Taiwan Semicond Mfg Co Ltd, Failure Anal Div 9, Hsinchu, Taiwan. Haldor Topsoe Res Labs, Environm & Mat Dept, Res & Dev, DK-2800 Lyngby, Denmark. Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. RP Kubel, C (reprint author), FEI Co, Applicat Lab, Achtseweg Noord 5, NL-5651 GG Eindhoven, Netherlands. EM ck@ifam.fraunhofer.de RI Kubel, Christian/A-1720-2009; OI Kuebel, Christian/0000-0001-5701-4006; Carlsson, Anna/0000-0002-8554-0895 NR 52 TC 108 Z9 110 U1 10 U2 71 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH ST, NEW YORK, NY 10011-4211 USA SN 1431-9276 J9 MICROSC MICROANAL JI Microsc. microanal. PD OCT PY 2005 VL 11 IS 5 BP 378 EP 400 DI 10.1017/S1431927605050361 PG 23 WC Materials Science, Multidisciplinary; Microscopy SC Materials Science; Microscopy GA 971JA UT WOS:000232378800002 PM 17481320 ER PT J AU Bostick, BC Fendorf, S Brown, GE AF Bostick, BC Fendorf, S Brown, GE TI In situ analysis of thioarsenite complexes in neutral to alkaline arsenic sulphide solutions SO MINERALOGICAL MAGAZINE LA English DT Article; Proceedings Paper CT Conference on Environmental Mineralogy, Geochemistry and Human Health CY JAN, 2005 CL Bath, ENGLAND SP Mineral Soc DE thioarsenite complexes; arsenic sulphide solution; in situ analysis ID METAL-THIOMETALATE TRANSPORT; RAY-ABSORPTION SPECTROSCOPY; ACTIVE TRACE-ELEMENTS; AQUEOUS-SOLUTION; SPECIATION; SEDIMENTS; 25-DEGREES-C; ENVIRONMENTS; SOLUBILITY; STABILITY AB The solubility of arsenic in anoxic soil and sediment pore waters is strongly influenced by complexation with dissolved sulphide. Despite their importance in arsenic chemistry, thioarsenite complexes have not been well characterized, and considerable questions remain regarding their structure, protonation state, and relative stabilities. Here we use X-ray absorption spectroscopy to examine the type and structure of aqueous arsenic-sulphur complexes in sulphidic solutions under neutral to alkaline pH. Arsenic formed a variety of thioarsenites, including AsS(SH)(OH)(-), As(SH)S-2(2-), AsS33- and As(SH)(4)(-) complexes. The relative fraction of each species varied strongly with the S:As ratio - with the fraction of AsS(SH)(OH)(-) greatest at low S:As and trithioarsenites dominating As speciation when S:As ratios exceeded 3 in solution. As much as 40% of the total As also was present as AsS3S3+x(SH)(3-x)(-1) in solutions at S:As ratios of 3 or greater. Sulphide complexation was somewhat dependent on pH, with sulphide complexation generally increasing with pH. The speciation observed in these experiments is similar to, though distinct from, speciation predicted based on As2S3 solubility (inferred to contain AsS2- and AsS3S3+x(SH)(3-x)(-1)) and chromatographic separation of arsenic species (which does not identify polymeric species). Thus, these data indicate that stability constants for arsenic sulphide complexes must be reappraised. C1 Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA. Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA. Stanford Synchrotron Radiat Lab, SLAC, Menlo Pk, CA 94025 USA. RP Bostick, BC (reprint author), Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA. EM benjamin.c.bostick@dartmouth.edu NR 33 TC 45 Z9 46 U1 4 U2 37 PU MINERALOGICAL SOCIETY PI LONDON PA 41 QUEENS GATE, LONDON SW7 5HR, ENGLAND SN 0026-461X J9 MINERAL MAG JI Mineral. Mag. PD OCT PY 2005 VL 69 IS 5 BP 781 EP 795 DI 10.1180/0026461056950288 PG 15 WC Mineralogy SC Mineralogy GA 007ZD UT WOS:000235009100021 ER PT J AU Greeff, CW AF Greeff, CW TI Phase changes and the equation of state of Zr SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article ID ALPHA-OMEGA TRANSITION; HIGH-PRESSURE; BCC PHASE; TEMPERATURE-DEPENDENCE; GRADIENT CORRECTIONS; LATTICE-PARAMETERS; CRYSTAL-STRUCTURES; ZIRCONIUM METAL; TI; TITANIUM AB The equation of state of Zr is investigated, with an emphasis on determining the phase diagram, and the correct sequence of phases along the shock Hugoniot. This investigation involves the creation of free energy functions for hcp, omega, and bee phases. These free energies incorporate information from electronic structure theory, and allow a unified description of data on thermodynamic properties, equation of state, and phase changes. All the data and calculations are consistent with a Zr phase diagram in which the high temperature and high pressure bee phases are a single continuous phase. The Hugoniot is interpreted as consisting of a metastable alpha (hcp) phase branch, an omega phase branch, and a beta (bee) phase branch. There are significant kinetic effects on the alpha-omega transition, so that, on the timescale of shock wave experiments, it is observed well above the equilibrium transition pressure. This parallels closely the behaviour of Ti. The presence of the second omega-beta transition in Zr contrasts with Ti, which shows only one prominent phase transition on its Hugoniot. The Zr Hugoniot is estimated to intersect the omega-beta phase boundary at P = 24 GPa and T = 585 K. It is expected that the omega-beta transition will lead to shock splitting for pressures between 24 and 31 GPa. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Greeff, CW (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM greeff@lanl.gov RI Greeff, Carl/N-3267-2013; OI Greeff, Carl/0000-0003-0529-0441 NR 44 TC 42 Z9 42 U1 2 U2 18 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD OCT PY 2005 VL 13 IS 7 BP 1015 EP 1027 DI 10.1088/0965-0393/13/7/001 PG 13 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 983IK UT WOS:000233224700001 ER PT J AU Ding, R Moldovan, D Yamakov, V Wolf, D Phillpot, SR AF Ding, R Moldovan, D Yamakov, V Wolf, D Phillpot, SR TI Effects of microstructural inhomogeneity on dynamic grain growth during large-strain grain boundary diffusion-assisted plastic deformation SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article ID SUPERPLASTIC DEFORMATION; POLYCRYSTALLINE MATERIALS; COMPUTER-SIMULATION; AL-ALLOY; CREEP; MECHANISM; MIGRATION; MODEL; FLOW; EVOLUTION AB Mesoscale simulations of grain-boundary (GB) diffusion creep in which GB migration-induced static grain growth is suppressed were carried out based on the variational principle of dissipated power. Assuming that the boundaries exhibit no sliding resistance in response to shear stress, the variation of the normal-stress distribution and the diffusive fluxes along the grain boundaries during Coble creep were analysed. The effects of microstructural inhomogeneity, including topological and physical inhomogeneity (i.e. distributions in the grain sizes and GB diffusivities) were investigated. We find that because of the lack of GB migration as an accommodation process to relax the stress concentrations in the microstructure, a topologically inhomogeneous microstructure becomes unphysical at high strains (of typically between 50-100%). Consistent with earlier simulations by Pan and Cocks (1993 Comput. Mater Sci. 1 95), we find that even in the absence of static grain growth an inhomogeneous microstructure exhibits dynamic grain growth induced by grain-switching induced grain-disappearance events. Our simulations also reveal that in a topologically inhomogeneous microstructure, the diffusive fluxes along any given GB can be in the same direction at both delimiting triple points; i.e. qualitatively different from a homogeneous (i.e. regular hexagonal) microstructure in which, according to Spingarn and Nix (1978 Acta Metall. 26 1389), these fluxes oppose each other. C1 Louisiana State Univ, Dept Mech Engn, Baton Rouge, LA 70803 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Natl Inst Aerosp, Hampton, VA 23666 USA. Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA. RP Moldovan, D (reprint author), Louisiana State Univ, Dept Mech Engn, Baton Rouge, LA 70803 USA. EM moldovan@me.lsu.edu RI Phillpot, Simon/J-9117-2012; OI Phillpot, Simon/0000-0002-7774-6535 NR 44 TC 7 Z9 7 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD OCT PY 2005 VL 13 IS 7 BP 1129 EP 1151 DI 10.1088/0965-0393/13/7/009 PG 23 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 983IK UT WOS:000233224700009 ER PT J AU Leebens-Mack, J Raubeson, LA Cui, LY Kuehl, JV Fourcade, MH Chumley, TW Boore, JL Jansen, RK dePamphilis, CW AF Leebens-Mack, J Raubeson, LA Cui, LY Kuehl, JV Fourcade, MH Chumley, TW Boore, JL Jansen, RK dePamphilis, CW TI Identifying the basal angiosperm node in chloroplast genome phylogenies: Sampling one's way out of the felsenstein zone SO MOLECULAR BIOLOGY AND EVOLUTION LA English DT Article DE angiosperm phylogeny; phylogenomics; parametric bootstrap ID COMPLETE NUCLEOTIDE-SEQUENCE; MADS-BOX GENES; LONG-BRANCH ATTRACTION; PLASTID CHROMOSOME; EVOLUTIONARY TREES; EARLIEST ANGIOSPERMS; MOLECULAR EVOLUTION; MAXIMUM-LIKELIHOOD; MULTIGENE ANALYSES; COVARIOTIDE MODEL AB While there has been strong support for Amborella and Nymphaeales ( water lilies) as branching from basal- most nodes in the angiosperm phylogeny, this hypothesis has recently been challenged by phylogenetic analyses of 61 protein- coding genes extracted from the chloroplast genome sequences of Amborella, Nymphaea, and 12 other available land plant chloroplast genomes. These character- rich analyses placed the monocots, represented by three grasses ( Poaceae), as sister to all other extant angiosperm lineages. We have extracted protein- coding regions from draft sequences for six additional chloroplast genomes to test whether this surprising result could be an artifact of long- branch attraction due to limited taxon sampling. The added taxa include three monocots ( Acorus, Yucca, and Typha), a water lily ( Nuphar), a ranunculid ( Ranunculus), and a gymnosperm ( Ginkgo). Phylogenetic analyses of the expanded DNA and protein data sets together with microstructural characters ( indels) provided unambiguous support for Amborella and the Nymphaeales as branching from the basal- most nodes in the angiosperm phylogeny. However, their relative positions proved to be dependent on the method of analysis, with parsimony favoring Amborella as sister to all other angiosperms and maximum likelihood ( ML) and neighbor- joining methods favoring an Amborella + Nymphaeales clade as sister. The ML phylogeny supported the later hypothesis, but the likelihood for the former hypothesis was not significantly different. Parametric bootstrap analysis, single- gene phylogenies, estimated divergence dates, and conflicting indel characters all help to illuminate the nature of the conflict in resolution of the most basal nodes in the angiosperm phylogeny. Molecular dating analyses provided median age estimates of 161 MYA for the most recent common ancestor ( MRCA) of all extant angiosperms and 145 MYA for the MRCA of monocots, magnoliids, and eudicots. Whereas long sequences reduce variance in branch lengths and molecular dating estimates, the impact of improved taxon sampling on the rooting of the angiosperm phylogeny together with the results of parametric bootstrap analyses demonstrate how long- branch attraction might mislead genome- scale phylogenetic analyses. C1 Penn State Univ, Inst Mol Evolutionary Genet, Dept Biol, University Pk, PA 16802 USA. Penn State Univ, Huck Inst Life Sci, University Pk, PA 16802 USA. Cent Washington Univ, Dept Biol Sci, Washington, DC USA. Lawrence Livermore Natl Lab, Walnut Creek, CA USA. Univ Texas, Inst Cellular & Mol Biol, Austin, TX USA. Univ Texas, Sect Integrat Biol, Austin, TX USA. Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA. RP Leebens-Mack, J (reprint author), Penn State Univ, Inst Mol Evolutionary Genet, Dept Biol, University Pk, PA 16802 USA. EM jleebensmack@psu.edu RI Jansen, Robert/F-6272-2011; dePamphilis, Claude/P-6652-2016 NR 98 TC 175 Z9 202 U1 4 U2 29 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0737-4038 J9 MOL BIOL EVOL JI Mol. Biol. Evol. PD OCT PY 2005 VL 22 IS 10 BP 1948 EP 1963 DI 10.1093/molbev/msi191 PG 16 WC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity SC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity GA 963SP UT WOS:000231826500002 PM 15944438 ER PT J AU Mueller, RL Boore, JL AF Mueller, RL Boore, JL TI Molecular mechanisms of extensive mitochondrial gene rearrangement in plethodontid salamanders SO MOLECULAR BIOLOGY AND EVOLUTION LA English DT Article DE complete mitochondrial genomes; gene rearrangement; tandem duplication; pseudogenes; plethodontids ID COMPLETE NUCLEOTIDE-SEQUENCE; CONTROL REGION; EVOLUTIONARY DYNAMICS; SECONDARY STRUCTURES; TANDEM DUPLICATION; DNA-SEQUENCE; GENOME SIZE; ORDER; RECOMBINATION; MAINTENANCE AB Extensive gene rearrangement is reported in the mitochondrial genomes of lungless salamanders ( Plethodontidae). In each genome with a novel gene order, there is evidence that the rearrangement was mediated by duplication of part of the mitochondrial genome, including the presence of both pseudogenes and additional, presumably functional, copies of duplicated genes. All rearrangement- mediating duplications include either the origin of light- strand replication and the nearby tRNA genes or the regions flanking the origin of heavy- strand replication. The latter regions comprise nad6, trnE, cob, trnT, an intergenic spacer between trnT and trnP and, in some genomes, trnP, the control region, trnF, rrnS, trnV, rrnL, trnL1, and nad1. In some cases, two copies of duplicated genes, presumptive regulatory regions, and/ or sequences with no assignable function have been retained in the genome following the initial duplication; in other genomes, only one of the duplicated copies has been retained. Both tandem and nontandem duplications are present in these genomes, suggesting different duplication mechanisms. In some of these mitochondrial DNAs, up to 25% of the total length is composed of tandem duplications of noncoding sequence that includes putative regulatory regions and/ or pseudogenes of tRNAs and protein- coding genes along with the otherwise unassignable sequences. These data indicate that imprecise initiation and termination of replication, slipped- strand mispairing, and intramolecular recombination may all have played a role in generating repeats during the evolutionary history of plethodontid mitochondrial genomes. C1 Univ Calif Berkeley, Museum Vertebrate Zool, Berkeley, CA USA. Univ Calif, Lawrence Berkeley Lab, Walnut Creek, CA USA. Univ Calif, Joint Genome Inst, Dept Energy, Evolutionary Genom Dept, Walnut Creek, CA USA. Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA USA. RP Mueller, RL (reprint author), Univ Chicago, Dept Organismal Biol & Anat, Chicago, IL USA. EM rmueller@uchicago.edu NR 50 TC 83 Z9 89 U1 3 U2 11 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0737-4038 J9 MOL BIOL EVOL JI Mol. Biol. Evol. PD OCT PY 2005 VL 22 IS 10 BP 2104 EP 2112 DI 10.1093/molbev/msi204 PG 9 WC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity SC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity GA 963SP UT WOS:000231826500018 PM 15987876 ER PT J AU Jones, KR Gewirtz, DA Yannone, SM Zhou, SM Schatz, DG Valerie, K Povirk, LF AF Jones, KR Gewirtz, DA Yannone, SM Zhou, SM Schatz, DG Valerie, K Povirk, LF TI Radiosensitization of MDA-MB-231 breast tumor cells by adenovirus-mediated overexpression of a fragment of the XRCC4 protein SO MOLECULAR CANCER THERAPEUTICS LA English DT Article ID DNA-LIGASE-IV; DOUBLE-STRAND BREAKS; DEPENDENT PROTEIN-KINASE; V(D)J RECOMBINATION; MAMMALIAN-CELLS; XRCC4 PROTEIN; REPAIR; REQUIREMENT; RADIATION; TELOMERE AB Incomplete DNA repair or misrepair can contribute to the cytotoxicity of DNA double-strand breaks. Consequenty, interference with double-strand break repair, by pharmacologic or genetic means, is likely to sensitize tumor cells to ionizing radiation. The current studies were designed to inhibit the nonhomologous end joining repair pathway by interfering with the function of the XRCC4/ligase IV complex. A PCR-generated fragment of the XRCC4 gene, encompassing the homodimerization and ligase IV-binding domains, was inserted into a plasmid vector (pFLAG-CMV2) expressing the FLAG peptide and the cassette encoding FLAG-tagged XRCC4 fragment was cloned into an adenoviral vector. Both the plasmid and the corresponding adenovirus elicited robust expression of a truncated XRCC4 protein designed to compete in a dominant-negative fashion with full-length XRCC4 for binding to ligase IV. Binding of the XRCC4 fragment to ligase IV in vivo was confirmed by immunoprecipitation. Clonogenic survival assays showed that the adenovirus expressing the truncated XRCC4 protein sensitizes MDA-MB-231 breast tumor cells to ionizing radiation, presumably through interference with the functional activity of ligase IV, leading to inhibition of the final ligation step in end joining. These studies support the potential clinical utility of combining radiation therapy with agents that inhibit DNA double-strand break repair. C1 Virginia Commonwealth Univ, Dept Pharmacol & Toxicol, Richmond, VA 23298 USA. Virginia Commonwealth Univ, Dept Radiat Oncol, Richmond, VA 23298 USA. Virginia Commonwealth Univ, Massey Canc Ctr, Richmond, VA 23298 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mol Biol, Div Life Sci, Berkeley, CA 94720 USA. Yale Univ, Sch Med, Howard Hughes Med Inst, New Haven, CT 06510 USA. RP Povirk, LF (reprint author), Virginia Commonwealth Univ, Dept Pharmacol & Toxicol, POB 980230, Richmond, VA 23298 USA. EM lpovirk@gems.vcu.edu RI Yannone, Steven/G-1927-2011; Schatz, David/A-6748-2013 OI Schatz, David/0000-0002-5669-1176 FU NCI NIH HHS [CA40615, CA72955] NR 36 TC 16 Z9 16 U1 0 U2 0 PU AMER ASSOC CANCER RESEARCH PI PHILADELPHIA PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA SN 1535-7163 J9 MOL CANCER THER JI Mol. Cancer Ther. PD OCT PY 2005 VL 4 IS 10 BP 1541 EP 1547 DI 10.1158/1535-7163.MCT-05-0193 PG 7 WC Oncology SC Oncology GA 974AS UT WOS:000232564300010 PM 16227403 ER PT J AU Fan, Q Huang, GC Lechno-Yossef, S Wolk, CP Kaneko, T Tabata, S AF Fan, Q Huang, GC Lechno-Yossef, S Wolk, CP Kaneko, T Tabata, S TI Clustered genes required for synthesis and deposition of envelope glycolipids in Anabaena sp strain PCC 7120 SO MOLECULAR MICROBIOLOGY LA English DT Article ID FATTY-ACID SYNTHASE; NONRIBOSOMAL PEPTIDE SYNTHETASES; NITROGEN-FIXING CYANOBACTERIA; BLUE-GREEN-ALGA; HETEROCYST GLYCOLIPIDS; MARINE CYANOBACTERIUM; ESCHERICHIA-COLI; PCC 7120; POLYKETIDE BIOSYNTHESIS; CLONING VECTORS AB Photoreduction of dinitrogen by heterocyst-forming cyanobacteria is of great importance ecologically and for subsistence rice agriculture. Their heterocysts must have a glycolipid envelope layer that limits the entry of oxygen if nitrogenase is to remain active to fix dinitrogen in an oxygen-containing milieu ( the Fox(+) phenotype). Genes alr5354 (hgID), alr5355 (hgIC) and alr5357 (hgIB) of the filamentous cyanobacterium, Anabaena sp. strain PCC 7120, and hglE of Nostoc punctiforme are required for synthesis of heterocyst envelope glycolipids. Newly identified Fox(-) mutants bear transposons in nearby open reading frames (orfs) all5343, all5345-asr5349 and alr5351-alr5358. Complementation and other analysis provide evidence that at least orfs all5343 (or a co-transcribed gene), all5345, all5347, alr5348, asr5350-alr5353 and alr5356, but not asr5349, are also required for a Fox(+) phenotype. Lipid and sequence analyses suggest that alr5351-alr5357 encode the enzymes that biosynthesize the glycolipid aglycones. Electron microscopy indicates a role of all5345 through all5347 in the normal deposition of the envelope glycolipids. C1 Michigan State Univ, DOE Plant Res Lab, E Lansing, MI 48824 USA. Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA. Kazusa DNA Res Inst, Chiba 2920818, Japan. RP Michigan State Univ, DOE Plant Res Lab, E Lansing, MI 48824 USA. EM wolk@msu.edu RI FAN, QING/G-6356-2012 NR 70 TC 59 Z9 62 U1 2 U2 7 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0950-382X EI 1365-2958 J9 MOL MICROBIOL JI Mol. Microbiol. PD OCT PY 2005 VL 58 IS 1 BP 227 EP 243 DI 10.1111/j.1365-2958.2005.04818.x PG 17 WC Biochemistry & Molecular Biology; Microbiology SC Biochemistry & Molecular Biology; Microbiology GA 964VZ UT WOS:000231910400019 PM 16164561 ER PT J AU Barstow, MA Cruddace, RG Kowalski, MP Bannister, NP Yentis, D Lapington, JS Tandy, JA Hubeny, I Schuh, S Dreizler, S Barbee, TW AF Barstow, MA Cruddace, RG Kowalski, MP Bannister, NP Yentis, D Lapington, JS Tandy, JA Hubeny, I Schuh, S Dreizler, S Barbee, TW TI High-resolution extreme ultraviolet spectroscopy of G191-B2B: structure of the stellar photosphere and the surrounding interstellar medium SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE stars : atmospheres; white dwarfs; ISM : general; ultraviolet : stars ID DA WHITE-DWARFS; ACCELERATED LAMBDA-ITERATION; MODEL; ABUNDANCES AB We have continued our detailed analysis of the high-resolution (R = 4000) spectroscopic observation of the DA white dwarf G191-B2B, obtained by the Joint Astrophysical Plasmadynamic Experiment (J-PEX) normal incidence sounding rocket-borne telescope, comparing the observed data with theoretical predictions for both homogeneous and stratified atmosphere structures. We find that the former models give the best agreement over the narrow waveband covered by J-PEX, in conflict with what is expected from previous studies of the lower resolution but broader wavelength coverage Extreme Ultraviolet Explorer spectra. We discuss the possible limitations of the atomic data and our understanding of the stellar atmospheres that might give rise to this inconsistency. In our earlier study, we obtained an unusually high ionization fraction for the ionized He II present along the line of sight to the star. In the present paper, we obtain a better fit when we assume, as suggested by Space Telescope Imaging Spectrograph results, that this He II resides in two separate components. When one of these is assigned to the local interstellar cloud, the implied He ionization fraction is consistent with measurements along other lines of sight. However, the resolving power and signal-to-noise available from the instrument configuration used in this first successful J-PEX flight are not sufficient to clearly identify and prove the existence of the two components. C1 Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England. Naval Res Lab, EO Hulburt Ctr Space Res, Washington, DC 20375 USA. UCL, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England. Natl Opt Astron Observ, Tucson, AZ 85726 USA. Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. Univ Gottingen, Inst Astrophys, D-37077 Gottingen, Germany. Lawrence Livermore Natl Lab, Livermore, CA USA. Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. Univ Gottingen, Inst Astrophys, D-37077 Gottingen, Germany. Lawrence Livermore Natl Lab, Livermore, CA USA. RP Barstow, MA (reprint author), Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England. EM mab@star.le.ac.uk RI Lapington, Jon/A-7669-2012 NR 18 TC 16 Z9 16 U1 0 U2 0 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 OCT 1 PY 2005 VL 362 IS 4 BP 1273 EP 1278 DI 10.1111/j.1365-2966.2005.09394.x PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 964TP UT WOS:000231903800016 ER PT J AU Razoumov, AO Cardall, CY AF Razoumov, AO Cardall, CY TI Fully threaded transport engine: new method for multi-scale radiative transfer SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE radiative transfer; methods : numerical; intergalactic medium ID REIONIZATION AB A new, very fast method for 3D radiative transfer on fully threaded grids with arbitrarily high angular resolution is presented. The method uses completely cell-based discretization, and is ideally suited for problems with diffuse background radiation, often encountered in cosmological and star formation models. We find that for accurate statistical study of intergalactic Ly alpha absorption lines, one needs of the order of a few hundred angular discretization elements even for models without radiative feedback from star-forming galaxies. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. RP Razoumov, AO (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM razoumov@phy.ornl.gov; ccardall@mail.phy.ornl.gov NR 14 TC 32 Z9 32 U1 0 U2 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD OCT 1 PY 2005 VL 362 IS 4 BP 1413 EP 1417 DI 10.1111/j.1365-2966.2005.09409.x PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 964TP UT WOS:000231903800028 ER PT J AU Kwak, ES Henzie, J Chang, SH Gray, SK Schatz, GC Odom, TW AF Kwak, ES Henzie, J Chang, SH Gray, SK Schatz, GC Odom, TW TI Surface plasmon standing waves in large-area subwavelength hole arrays SO NANO LETTERS LA English DT Article ID ENHANCED LIGHT TRANSMISSION; NANOHOLES; FILMS; GENERATION; SCATTERING; APERTURE; AU AB A flexible and parallel procedure to generate large-area, free-standing films of subwavelength hole arrays has been demonstrated. This method is materials-general, and multilayered films of different materials were constructed. The optical quality of these films was tested using a near-field scanning optical microscope, which revealed the formation of surface plasmon standing wave patterns that were consistent with numerical simulations. Because the properties of the holes and the film materials can be easily tailored, new types of plasmonic and photonic devices can be envisioned and tested. C1 Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Odom, TW (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA. EM todom@northwestern.edu RI Chang, Gilbert/B-5437-2012; Henzie, Joel/B-9564-2013; Henzie, Joel/E-2332-2015; OI Chang, Gilbert/0000-0002-2729-4905; Henzie, Joel/0000-0002-9190-2645; Henzie, Joel/0000-0002-9190-2645; Odom, Teri/0000-0002-8490-292X NR 16 TC 73 Z9 74 U1 2 U2 24 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 OCT PY 2005 VL 5 IS 10 BP 1963 EP 1967 DI 10.1021/nl051339s 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 974XC UT WOS:000232623700020 PM 16218718 ER PT J AU Su, M Dravid, VP AF Su, M Dravid, VP TI Surface combustion microengines based on photocatalytic oxidations of hydrocarbons at room temperature SO NANO LETTERS LA English DT Article ID ALIPHATIC-ALCOHOLS; DNA; ADSORPTION; TIO2(110); MACHINE; ETHANOL; TIO2; PHOTODESORPTION; MOLECULES; FORCE AB The concept of a surface combustion microengine that is fuelled by volatile hydrocarbons at room temperature is demonstrated on a microcantilever covered with a thin layer of titanium oxide (TiO2). Exposing this microengine to ultraviolet (UV) radiation and hydrocarbon vapor produces controlled bending of the microcantilever as a result of differential stress produced by photocatalytic oxidation of organic molecules on the TiO2 coating. Compared to the motion generated solely by UV radiation or hydrocarbon adsorption, the unique photocatalytic-mechanical effects in the presence of UV and hydrocarbon produce more work and exhibit fast response. The surface combustion based microengines would require less maintenance in minimally controlled field environment and could be potentially used in construction of miniature movable machines, conversion of solar and chemical energy to mechanical work, when extended to a large array of microcantilevers. We believe such microengines can be fuelled by a variety of molecules or mixtures due to the generally favorable photocatalytic reactivity of TiO2, thus potentially offering a broad approach for mechanical work generation from multiple energy sources. C1 Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. RP Su, M (reprint author), Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. EM sum1@ornl.gov; v-dravid@northwestern.edu RI Dravid, Vinayak/B-6688-2009; Su, Ming/F-4001-2014 NR 37 TC 8 Z9 8 U1 0 U2 7 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 OCT PY 2005 VL 5 IS 10 BP 2023 EP 2028 DI 10.1021/nl0515605 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 974XC UT WOS:000232623700033 PM 16218731 ER PT J AU Robinson, JT Liddle, JA Minor, A Radmilovic, V Yi, DO Greaney, PA Long, KN Chrzan, DC Dubon, OD AF Robinson, JT Liddle, JA Minor, A Radmilovic, V Yi, DO Greaney, PA Long, KN Chrzan, DC Dubon, OD TI Metal-induced assembly of a semiconductor island lattice: Ge truncated pyramids on Au-patterned Si SO NANO LETTERS LA English DT Article ID STRANSKI-KRASTANOV GROWTH; 001 SURFACE; SI(001); SHAPE; DOTS; TRANSITION; DOMES AB We report the two-dimensional alignment of semiconductor islands using rudimentary metal patterning to control nucleation and growth. In the Ge on Si system, a square array of submicron Au dots on the Si (001) surface induces the assembly of deposited Ge adatoms into an extensive island lattice. Remarkably, these highly ordered Ge islands form between the patterned Au dots and are characterized by a unique truncated pyramidal shape. A model based on patterned diffusion barriers explains the observed ordering and establishes general criteria for the broader applicability of such a directed assembly process to quantum dot ordering. C1 Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. RP Dubon, OD (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. EM oddubon@berkeley.edu RI Robinson, Jeremy/F-2748-2010; Liddle, James/A-4867-2013 OI Liddle, James/0000-0002-2508-7910 NR 22 TC 27 Z9 27 U1 0 U2 10 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 OCT PY 2005 VL 5 IS 10 BP 2070 EP 2073 DI 10.1021/nl051719d PG 4 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 974XC UT WOS:000232623700041 PM 16218739 ER PT J AU Sutter, E Sutter, P Zhu, YM AF Sutter, E Sutter, P Zhu, YM TI Assembly and interaction of Au/C core-shell nanostructures: In situ observation in the transmission electron microscope SO NANO LETTERS LA English DT Article ID PARTICLES; NANOPARTICLES; IRRADIATION; TIP AB Using transmission electron microscopy, we identify the temperature-dependent interaction pathway of carbon-supported Au nanoparticles. At low temperature (room temp. to 400 degrees C) Au nanoparticles predominantly interact by coalescence initiated by an atomic Au bridge. At high temperature (400-800 degrees C), the particles assemble into Au/C core-shell nanostructures. C-shells around individual nanoparticles; passivate their surface and prevent coalescence. Ultimately coalescence does occur via rupture of the passivating shells, which invariably follows the assembly of C sheets enveloping and compressing multiple closely spaced Au/C nanoparticles. C1 Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RP Sutter, E (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. EM esutter@bnl.gov NR 17 TC 40 Z9 40 U1 2 U2 16 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 OCT PY 2005 VL 5 IS 10 BP 2092 EP 2096 DI 10.1021/nl051498b 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 974XC UT WOS:000232623700046 PM 16218744 ER PT J AU Dirk, SM Howell, SW Zmuda, S Childs, K Blain, M Simonson, RJ Wheeler, DR AF Dirk, SM Howell, SW Zmuda, S Childs, K Blain, M Simonson, RJ Wheeler, DR TI Novel one-dimensional nanogap created with standard optical lithography and evaporation procedures SO NANOTECHNOLOGY LA English DT Article ID MOLECULAR ELECTRONIC DEVICE; FABRICATION; JUNCTION; SILICON; ARRAYS; SIZE; GAPS AB This article details a simple four-step procedure to create a one-dimensional nanogap on a buried oxide substrate that relies on conventional photolithography performed on a stack of silicon/silicon oxide/silicon, metal evaporation, and hydrofluoric acid oxide removal. Once the nanogap was fabricated it was bridged with an assembly of 1,8-octanedithiol and 5 nm Au nanoparticles capped with a sacrificial dodecylamine coating. Before assembly, characterization of the nanogaps was performed through electrical measurements and SEM imaging. Post assembly, the resistance of the nanogaps was evaluated. The current increased from 70 fA to 200 mu A at +1 V bias, clearly indicating a modification due to nanoparticle molecule assembly. Control experiments without nanoparticles or octanedithiol did not show an increase in current. C1 Sandia Natl Labs, Micro Analyt Syst Dept, Albuquerque, NM 87185 USA. Sandia Natl Labs, Rad Hard CMOS Technol Dept, Albuquerque, NM 87185 USA. RP Sandia Natl Labs, Micro Analyt Syst Dept, Albuquerque, NM 87185 USA. EM drwheel@sandia.gov NR 13 TC 23 Z9 23 U1 1 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0957-4484 EI 1361-6528 J9 NANOTECHNOLOGY JI Nanotechnology PD OCT PY 2005 VL 16 IS 10 BP 1983 EP 1985 DI 10.1088/0957-4484/16/10/001 PG 3 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 978XL UT WOS:000232906200002 PM 20817959 ER PT J AU Fixe, F Branz, HM Louro, N Chu, V Prazeres, DMF Conde, JP AF Fixe, F Branz, HM Louro, N Chu, V Prazeres, DMF Conde, JP TI Electric-field assisted immobilization and hybridization of DNA oligomers on thin-film microchips SO NANOTECHNOLOGY LA English DT Article ID SURFACE-PLASMON RESONANCE; COVALENT ATTACHMENT; SOLID-SURFACES; MICROARRAYS; ADSORPTION; OLIGONUCLEOTIDES; CHIPS; TECHNOLOGY; INTERFACES; DENSITY AB Single, square voltage pulses in the microsecond timescale result in selective 5'-end covalent bonding (immobilization) of thiolated single-stranded (ss) DNA probes to a modified silicon dioxide flat surface and in specific hybridization of ssDNA targets to the immobilized probe. Immobilization and hybridization rates using microsecond voltage pulses at or below I V are at least 108 times faster than in the passive control reactions performed without electric field (E), and can be achieved with at least three differently functionalized thin-film surfaces on plastic or glass substrates. The systematic study of the effect of DNA probe and target concentrations, of DNA probe and target length, and the application of asymmetric pulses on E-assisted DNA immobilization and hybridization showed that: (1) the rapidly rising edge of the pulse is most critical to the E-assisted processes, but the duration of the pulse is also important; (2) E-assisted immobilization and hybridization can be performed with micrometre-sized pixels, proving the potential for use on microelectronic length scales, and the applied voltage can be scaled down together with the electrode spacing to as low as 25 mV; and (3) longer DNA chains reduce the yield in the E-assisted immobilization and hybridization because the density of physisorbed single-stranded DNA is reduced. The results show that the E-induced reactions can be used as a general method in DNA microarrays to produce high-density DNA chips (E-immobilization) and speed the microarray-based analysis (E-hybridization). C1 INESC, MN, P-1000 Lisbon, Portugal. Univ Tecn Lisboa, Ctr Engn Biol & Quim, Inst Super Tecn, P-1049001 Lisbon, Portugal. Natl Renewable Energy Lab, Golden, CO 80401 USA. Univ Tecn Lisboa, Dept Chem Engn, Inst Super Tecn, P-1049001 Lisbon, Portugal. RP INESC, MN, Rua Alves Redol 9, P-1000 Lisbon, Portugal. RI Prazeres, Duarte Miguel/E-2526-2011; Conde, Joao Pedro/F-8533-2012; Chu, Virginia/I-6048-2014 OI Prazeres, Duarte Miguel/0000-0002-6928-692X; Conde, Joao Pedro/0000-0002-5677-3024; Chu, Virginia/0000-0002-5306-4409 NR 39 TC 27 Z9 28 U1 3 U2 24 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0957-4484 EI 1361-6528 J9 NANOTECHNOLOGY JI Nanotechnology PD OCT PY 2005 VL 16 IS 10 BP 2061 EP 2071 DI 10.1088/0957-4484/16/10/014 PG 11 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 978XL UT WOS:000232906200015 PM 20817972 ER PT J AU Taraci, JL Hytch, MJ Clement, T Peralta, P McCartney, MR Drucker, J Picraux, ST AF Taraci, JL Hytch, MJ Clement, T Peralta, P McCartney, MR Drucker, J Picraux, ST TI Strain mapping in nanowires SO NANOTECHNOLOGY LA English DT Article ID RESOLUTION ELECTRON-MICROSCOPY; SILICON; DISPLACEMENT; NANOSTRUCTURES; DIFFRACTION; TECHNOLOGY; ANISOTROPY; STRESS; GROWTH AB A method for obtaining detailed two-dimensional strain maps in nanowires and related nanoscale structures has been developed. The approach relies on a combination of lattice imaging by high-resolution transmission electron microscopy and geometric phase analysis of the resulting micrographs using Fourier transform routines. We demonstrate the method for a germanium nanowire grown epitaxially on Si(111) by obtaining the strain components epsilon(xx), epsilon(yy), epsilon(xy), the mean dilatation, and the rotation of the lattice planes. The resulting strain maps are demonstrated to allow detailed evaluation of the strains and loading on nanowires. C1 Arizona State Univ, Dept Chem & Mat Engn, Tempe, AZ 85287 USA. Ctr Natl Rech Sci, Vitry Sur Seine, France. Arizona State Univ, Dept Mech & Aerosp Engn, Tempe, AZ 85287 USA. Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA. Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM USA. RP Taraci, JL (reprint author), Arizona State Univ, Dept Chem & Mat Engn, Tempe, AZ 85287 USA. EM picraux@lanl.gov NR 23 TC 48 Z9 48 U1 4 U2 42 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0957-4484 J9 NANOTECHNOLOGY JI Nanotechnology PD OCT PY 2005 VL 16 IS 10 BP 2365 EP 2371 DI 10.1088/0957-44/16/10/062 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 978XL UT WOS:000232906200063 PM 20818019 ER PT J AU Pautot, S Lee, H Isacoff, EY Groves, JT AF Pautot, S Lee, H Isacoff, EY Groves, JT TI Neuronal synapse interaction reconstituted between live cells and supported lipid bilayers SO NATURE CHEMICAL BIOLOGY LA English DT Article ID REFLECTION FLUORESCENCE MICROSCOPY; ADHESION MOLECULES; NEUROLIGIN 1; SYNAPTOGENESIS; NEUREXINS; LIPOSOMES; MEMBRANES; PROTEINS; BIOLOGY AB In the nervous system, homophilic and heterophilic adhesion molecules participate in the induction and differentiation of presynaptic transmitter release sites. We focus on the heterophilic interaction between postsynaptic neuroligin-1 (Nlg) and presynaptic beta-neurexin (Nrx). NIg has previously been shown to trigger presynaptic differentiation in a Nrx-expressing axon even when presented on a non-neuronal cell or on beads coated with lipid bilayers. We have now developed a new method to measure single molecule and ensemble distribution of Nrx and Nlg at the contact site between a non-neuronal Nrx-expressing cell and a flat supported glycosylphosphoinositol-neuroligin-1 (GPI-Nlg) lipid bilayer and relate them to adhesion as measured by cell migration and gravity dissociation. We find that within minutes after cell-bilayer contact, Nrx accumulates at the contact site and the contact area is expanded. The strength of cell-bilayer adhesion depends on the morphology of Nrx accumulation, with the focal concentration strengthening adhesion. The results suggest that Nlg-Nrx interaction rapidly establishes a weak, but specific, adhesion between dynamic pre- and postsynaptic processes, which may ultimately require additional molecules for synapse stabilization. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Mat Sci & Phys Biosci Div, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Groves, JT (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Mat Sci & Phys Biosci Div, Berkeley, CA 94720 USA. EM ehud@berkeley.edu; JTGroves@lbl.gov FU NINDS NIH HHS [R01 NS050833] NR 29 TC 37 Z9 38 U1 0 U2 10 PU NATURE PUBLISHING GROUP PI NEW YORK PA 345 PARK AVENUE SOUTH, NEW YORK, NY 10010-1707 USA SN 1552-4450 J9 NAT CHEM BIOL JI Nat. Chem. Biol. PD OCT PY 2005 VL 1 IS 5 BP 283 EP 289 DI 10.1038/nchembio737 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 975GN UT WOS:000232649100013 PM 16408058 ER PT J AU Baker, SC Bauer, SR Beyer, RP Brenton, JD Bromley, B Burrill, J Causton, H Conley, MP Elespuru, R Fero, M Foy, C Fuscoe, J Gao, XL Gerhold, DL Gilles, P Goodsaid, F Guo, X Hackett, J Hockett, RD Ikonomi, P Irizarry, RA Kawasaki, ES Kaysser-Kranich, T Kerr, K Kiser, G Koch, WH Lee, KY Liu, CM Liu, ZL Lucas, A Manohar, CF Miyada, G Modrusan, Z Parkes, H Puri, RK Reid, L Ryder, TB Salit, M Samaha, RR Scherf, U Sendera, TJ Setterquist, RA Shi, LM Shippy, R Soriano, JV Wagar, EA Warrington, JA Williams, M Wilmer, F Wilson, M Wolber, PK Wu, XN Zadro, R AF Baker, SC Bauer, SR Beyer, RP Brenton, JD Bromley, B Burrill, J Causton, H Conley, MP Elespuru, R Fero, M Foy, C Fuscoe, J Gao, XL Gerhold, DL Gilles, P Goodsaid, F Guo, X Hackett, J Hockett, RD Ikonomi, P Irizarry, RA Kawasaki, ES Kaysser-Kranich, T Kerr, K Kiser, G Koch, WH Lee, KY Liu, CM Liu, ZL Lucas, A Manohar, CF Miyada, G Modrusan, Z Parkes, H Puri, RK Reid, L Ryder, TB Salit, M Samaha, RR Scherf, U Sendera, TJ Setterquist, RA Shi, LM Shippy, R Soriano, JV Wagar, EA Warrington, JA Williams, M Wilmer, F Wilson, M Wolber, PK Wu, XN Zadro, R CA External RNA Controls Consortium TI The external RNA controls consortium: a progress report SO NATURE METHODS LA English DT Editorial Material ID DNA AMPLIFICATION; PCR AB Standard controls and best practice guidelines advance acceptance of data from research, preclinical and clinical Laboratories by providing a means for evaluating data quality. The External RNA Controls Consortium (ERCC) is developing commonly agreed-upon and tested controls for use in expression assays, a true industry-wide standard control. C1 Affymetrix Inc, Santa Clara, CA 95051 USA. Illumina Inc, San Diego, CA 92121 USA. US FDA, Ctr Biol Evaluat & Res, Rockville, MD 20852 USA. Univ Washington, Seattle, WA 98105 USA. Univ Cambridge, CIMR, Addenbrookes Hosp, Cambridge CB2 2XY, England. ViaLogy Corp, Altadena, CA 91001 USA. Appl Biosyst Inc, Foster City, CA 94404 USA. Univ London Imperial Coll, London SW7 2AZ, England. Enzo Life Sci Inc, Farmingdale, NY 11735 USA. US FDA, Ctr Devices & Radiol Hlth, Fed Labs White Oak, Silver Spring, MD 20903 USA. Stanford Univ, Sch Med, Stanford, CA 94305 USA. Lab Govt Chemist, Bio Mol Innovat, Teddington TW11 0LY, Middx, England. US FDA, Natl Ctr Toxicol Res, Jefferson, AR 72079 USA. Atactic Technol Inc, Houston, TX 77054 USA. Merck Sharp Labs, Dept Mol Profiling, West Point, PA 19486 USA. Invitrogen Corp, Carlsbad, CA 92008 USA. US FDA, Ctr Drug Evaluat & Res, Rockville, MD 20852 USA. Affymetrix Inc, Santa Clara, CA 95051 USA. US FDA, Ctr Devices & Radiol Hlth, Rockville, MD 20850 USA. Eli Lilly & Co, Lilly Res Lab, Lilly Corp Ctr, Indianapolis, IN 46285 USA. Amer Type Culture Collect, Manassas, VA 20110 USA. NCI, Ctr Adv Technol, NIH, Baltimore, MD 21205 USA. GE Healthcare, Chandler, AZ 85248 USA. Roche Mol Syst, Pleasanton, CA 94588 USA. USDA, Peoria, IL 61604 USA. Agilent Technol Inc, Santa Clara, CA 95051 USA. Lawrence Livermore Natl Lab Microarray Ctr, Livermore, CA 94550 USA. Genentech Inc, San Francisco, CA 94080 USA. US FDA, NIH, Bethesda, MD 20892 USA. Express Anal, Durham, NC 27713 USA. NIST, Chem Sci & Technol Lab, Gaithersburg, MD 20899 USA. US FDA, Off In Vitro Diagnost Device Evaluat & Safety, Rockville, MD 20850 USA. Ambion Inc, Austin, TX 78744 USA. Amer Type Culture Collect, Manassas, VA 20110 USA. Univ Calif Los Angeles, Clin Labs, Los Angeles, CA 90095 USA. Qiagen Inc, D-40727 Hilden, Germany. Univ Zagreb, Sch Med, Zagreb 10000, Croatia. RP Warrington, JA (reprint author), Affymetrix Inc, 3380 Cent Expressway, Santa Clara, CA 95051 USA. EM janet_warrington@affymetrix.com RI Bauer, Steven/G-5559-2012; Kiser, Gretchen/A-3228-2013; OI Brenton, James/0000-0002-5738-6683; Bauer, Steven/0000-0003-2831-846X NR 8 TC 128 Z9 130 U1 0 U2 9 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1548-7091 J9 NAT METHODS JI Nat. Methods PD OCT PY 2005 VL 2 IS 10 BP 731 EP 734 DI 10.1038/nmeth1005-731 PG 4 WC Biochemical Research Methods SC Biochemistry & Molecular Biology GA 980FC UT WOS:000232998600009 PM 16179916 ER PT J AU Wilson, CC Myles, D Ghosh, M Johnson, LN Wang, WG AF Wilson, CC Myles, D Ghosh, M Johnson, LN Wang, WG TI Neutron diffraction investigations of L- and D-alanine at different temperatures: the search for structural evidence for parity violation SO NEW JOURNAL OF CHEMISTRY LA English DT Article ID PHASE-TRANSITIONS; CRYSTAL-STRUCTURE; SERINE RACEMASE; AMINO-ACIDS; MOLECULES; CHIRALITY; ORIGINS; VALINE AB Single crystal neutron diffraction has been used in an investigation of the structures of the amino acids L- and D-alanine. The aim of the study was to look for proposed phase transitions around T(c) approximate to 270 K. Measurements of both structures at 295 K and 60 K the neutron structure Of D-alanine being determined for the first time-show no significant structural basis for this phase transition in alanine. Further, confirmatory, investigation of the structure of D-alanine at temperatures of 240, 250, 260 and 300 K also showed no significant changes in bond lengths or angles. We can thus offer no structural support to other physical measurements, which are indicative of the observable effect of parity violation of the electroweak force in these phase transitions. C1 Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland. Univ Glasgow, WestCHEM Res Sch, Glasgow G12 8QQ, Lanark, Scotland. CLRC, Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England. Inst Max Von Laue Paul Langevin, EMBL Grenoble Outstn, F-38042 Grenoble, France. Oak Ridge Natl Lab, Struct Biol Ctr, Oak Ridge, TN 37831 USA. Univ Oxford, Dept Biochem, Lab Mol Biophys, Oxford OX1 3QU, England. Peking Univ, Coll Chem & Mol Engn, Dept Appl Chem, Beijing 100871, Peoples R China. RP Wilson, CC (reprint author), Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland. EM C.C.Wilson@chem.gla.ac.uk RI Wilson, Chick/F-1355-2011; myles, dean/D-5860-2016 OI myles, dean/0000-0002-7693-4964 NR 33 TC 58 Z9 58 U1 1 U2 10 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1144-0546 J9 NEW J CHEM JI New J. Chem. PD OCT PY 2005 VL 29 IS 10 BP 1318 EP 1322 DI 10.1039/b419295h PG 5 WC Chemistry, Multidisciplinary SC Chemistry GA 977BO UT WOS:000232777600014 ER PT J AU Huo, JD Huang, XL Tuli, JK AF Huo, JD Huang, XL Tuli, JK TI Nuclear data sheets for A=67 SO NUCLEAR DATA SHEETS LA English DT Review ID GAMMA-RAY SPECTROSCOPY; ATOMIC MASS EVALUATION; NEUTRON-RICH NUCLEI; ELECTRIC QUADRUPOLE INTERACTION; ALPHA-PARTICLE BOMBARDMENT; HALF-LIFE MEASUREMENTS; MEDIUM-WEIGHT NUCLEI; HIGH-SPIN STATES; LOW-LYING LEVELS; BETA-DECAY AB The 1991 evaluation of A=67 (1991Bh06) has been revised using the experimental decay and reaction data received by the cutoff date noted below. C1 Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA. Jilin Univ, Dept Phys, Changchun 130023, Peoples R China. Inst Atom Energy, Chinese Nucl Data Ctr, Beijing 102413, Peoples R China. RP Huo, JD (reprint author), Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA. NR 224 TC 13 Z9 13 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 0090-3752 J9 NUCL DATA SHEETS JI Nucl. Data Sheets PD OCT PY 2005 VL 106 IS 2 BP 159 EP + DI 10.1016/j.nds.2005.10.006 PG 96 WC Physics, Nuclear SC Physics GA 992RB UT WOS:000233900400001 ER PT J AU Gupta, M Burrows, TW AF Gupta, M Burrows, TW TI Nuclear data sheets for A=266-294 SO NUCLEAR DATA SHEETS LA English DT Article AB The 2000 Nuclear Data Sheets for A=267-293 (2000Fil2) and part (A=266) of the 2001 Nuclear Data Sheets for 250,254,258,262,266 (2001Ak11) have been revised using experimental decay and reaction data received by August 12, 2005. C1 Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA. Manipal Acad Higher Educ, Manipal 576104, India. RP Gupta, M (reprint author), Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA. EM mohini.gupta@manipal.edu; burrows@bnl.gov NR 0 TC 39 Z9 39 U1 0 U2 1 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0090-3752 J9 NUCL DATA SHEETS JI Nucl. Data Sheets PD OCT PY 2005 VL 106 IS 2 BP 251 EP 360 DI 10.1016/j.nds.2005.10.005 PG 110 WC Physics, Nuclear SC Physics GA 992RB UT WOS:000233900400002 ER PT J AU Greenwald, M Andelin, D Basse, N Bernabei, S Bonoli, P Bose, B Boswell, C Bravenec, R Carreras, B Cziegler, I Edlund, E Ernst, D Fasoli, C Ferrara, M Fiore, C Granetz, R Grulke, O Hender, T Hosea, J Howell, DH Hubbard, A Hughes, J Hutchinson, I Ince-Cushman, A Irby, J LaBombard, B LaHaye, R Lin, L Lin, Y Lipschultz, B Liptac, J Lisgo, S Lynn, A Marmar, E Marr, K Mikkelsen, DR McDermott, R Mossessian, D Parisot, A Parker, R Phillips, C Phillips, P Porkolab, M Redi, M Rice, J Rowan, W Sampsell, M Schilling, G Scott, S Scoville, JT Smick, N Snipes, J Stangeby, P Tang, V Terry, J Ulrickson, M Wallace, G Whyte, D Wilson, J Wright, J Wolfe, S Wukitch, S Youngblood, B Yuh, H Zhurovich, K Zweben, S AF Greenwald, M Andelin, D Basse, N Bernabei, S Bonoli, P Bose, B Boswell, C Bravenec, R Carreras, B Cziegler, I Edlund, E Ernst, D Fasoli, C Ferrara, M Fiore, C Granetz, R Grulke, O Hender, T Hosea, J Howell, DH Hubbard, A Hughes, J Hutchinson, I Ince-Cushman, A Irby, J LaBombard, B LaHaye, R Lin, L Lin, Y Lipschultz, B Liptac, J Lisgo, S Lynn, A Marmar, E Marr, K Mikkelsen, DR McDermott, R Mossessian, D Parisot, A Parker, R Phillips, C Phillips, P Porkolab, M Redi, M Rice, J Rowan, W Sampsell, M Schilling, G Scott, S Scoville, JT Smick, N Snipes, J Stangeby, P Tang, V Terry, J Ulrickson, M Wallace, G Whyte, D Wilson, J Wright, J Wolfe, S Wukitch, S Youngblood, B Yuh, H Zhurovich, K Zweben, S TI Overview of the Alcator C-Mod program SO NUCLEAR FUSION LA English DT Article; Proceedings Paper CT 20th IAEA Fusion Energy Conference CY NOV 01-06, 2004 CL Vilamoura, PORTUGAL SP IAEA ID SCRAPE-OFF-LAYER; INTERNAL TRANSPORT BARRIERS; NO MOMENTUM INPUT; L-H TRANSITION; TOROIDAL ROTATION; EDGE TURBULENCE; ION-CYCLOTRON; DIII-D; PLASMAS; TOKAMAK AB Research on the Alcator C-Mod tokamak has emphasized RF heating, self-generated flows, momentum transport, scrape-off layer (SOL) turbulence and transport and the physics of transport barrier transitions, stability and control. The machine operates with P-RF up to 6 MW corresponding to power densities on the antenna of 10 MW m(-2). Analysis of rotation profile evolution, produced in the absence of external drive, allows transport of angular momentum in the plasma core to be computed and compared between various operating regimes. Momentum is clearly seen diffusing and convecting from the plasma edge on time scales similar to the energy confinement time and much faster than neo-classical transport. SOL turbulence and transport have been studied with fast scanning electrostatic probes situated at several poloidal locations and with gas puff imaging. Strong poloidal asymmetries are found in profiles and fluctuations, confirming the essential ballooning character of the turbulence and transport. Plasma topology has a dominant effect on the magnitude and direction of both core rotation and SOL flows. The correlation of self-generated plasma flows and topology has led to a novel explanation for the dependence of the H-mode power threshold on the del B drift direction. Research into internal transport barriers has focused on control of the barrier strength and location. The foot of the barrier could be moved to larger minor radius by lowering q or B-T. The barriers, which are produced in C-Mod by off-axis RF heating, can be weakened by the application of on-axis power. Gyro-kinetic simulations suggest that the control mechanism is due to the temperature dependence of trapped electron modes which are destabilized by the large density gradients. A set of non-axisymmetric coils was installed allowing intrinsic error fields to be measured and compensated. These also enabled the determination of the mode locking threshold and, by comparison with data from other machines, provided the first direct measurement of size scaling for the threshold. The installation of a new inboard limiter resulted in the reduction of halo currents following disruptions. This effect can be understood in terms of the change in plasma contact with the altered geometry during vertical displacement of the plasma column. Unstable Alfven eigenmodes (AE) were observed in low-density, high-power ICRF heated plasmas. The damping rate of stable AEs was investigated with a pair of active MHD antennae. C1 MIT, Cambridge, MA 02139 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Univ Texas, Austin, TX 78712 USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. Eotvos Lorand Univ, Budapest, Hungary. CRPPP EPFL, Lausanne, Switzerland. Max Planck Inst Plasma Phys, Greifswald, Germany. Gen Atom, San Diego, CA USA. Univ Toronto, Toronto, ON, Canada. Sandia Natl Labs, Livermore, CA 94550 USA. Univ Wisconsin, Madison, WI USA. RP MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA. EM g@psfc.mit.edu RI Lin, Yijun/B-5711-2009; Hutchinson, Ian/D-1136-2009; Ernst, Darin/A-1487-2010; Lin, Liang/H-2255-2011; Lipschultz, Bruce/J-7726-2012; OI Hutchinson, Ian/0000-0003-4276-6576; Ernst, Darin/0000-0002-9577-2809; Lipschultz, Bruce/0000-0001-5968-3684; Basse, Nils/0000-0002-4513-8869; Greenwald, Martin/0000-0002-4438-729X NR 54 TC 16 Z9 17 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0029-5515 EI 1741-4326 J9 NUCL FUSION JI Nucl. Fusion PD OCT PY 2005 VL 45 IS 10 BP S109 EP S117 DI 10.1088/0029-5515/45/10/S09 PG 9 WC Physics, Fluids & Plasmas SC Physics GA 982PN UT WOS:000233174200010 ER PT J AU Kaye, SM Bell, MG Bell, RE Bernabei, S Bialek, J Biewer, T Blanchard, W Boedo, J Bush, C Carter, MD Choe, W Crocker, N Darrow, DS Davis, W Delgado-Aparicio, L Diem, S Ferron, J Field, A Foley, J Fredrickson, ED Gates, DA Gibney, T Harvey, R Hatcher, RE Heidbrink, W Hill, K Hosea, JC Jarboe, TR Johnson, DW Kaita, R Kessel, C Kubota, S Kugel, HW Lawson, J LeBlanc, BP Lee, KC Levinton, F Maingi, R Manickam, J Maqueda, R Marsala, R Mastrovito, D Mau, TK Medley, SS Menard, J Meyer, H Mikkelsen, DR Mueller, D Munsat, T Nelson, BA Neumeyer, C Nishino, N Ono, M Park, H Park, W Paul, S Peebles, T Peng, M Phillips, C Pigarov, A Pinsker, R Ram, A Ramakrishnan, S Raman, R Rasmussen, D Redi, M Rensink, M Rewoldt, G Robinson, J Roney, P Roquemore, AL Ruskov, E Ryan, P Sabbagh, SA Schneider, H Skinner, CH Smith, DR Sontag, A Soukhanovskii, V Stevenson, T Stotler, D Stratton, B Stutman, D Swain, D Synakowski, E Takase, Y Taylor, G Tritz, K von Halle, A Wade, M White, R Wilgen, J Williams, M Wilson, JR Zhu, W Zweben, SJ Akers, R Beiersdorfer, P Betti, R Bigelow, T Bitter, M Bonoli, P Bourdelle, C Chang, CS Chrzanowski, J Domier, C Dudek, L Efthimion, PC Finkenthal, M Fredd, E Fu, GY Glasser, A Goldston, RJ Greenough, NL Grisham, LR Gorelenkov, N Guazzotto, L Hawryluk, RJ Hogan, J Houlberg, W Humphreys, D Jaeger, F Kalish, M Krasheninnikov, S Lao, LL Lawrence, J Leuer, J Liu, D Luhmann, NC Mazzucato, E Oliaro, G Pacella, D Parsells, R Schaffer, M Semenov, I Shaing, KC Shapiro, MA Shinohara, K Sichta, P Tang, X Vero, R Walker, D Wampler, W AF Kaye, SM Bell, MG Bell, RE Bernabei, S Bialek, J Biewer, T Blanchard, W Boedo, J Bush, C Carter, MD Choe, W Crocker, N Darrow, DS Davis, W Delgado-Aparicio, L Diem, S Ferron, J Field, A Foley, J Fredrickson, ED Gates, DA Gibney, T Harvey, R Hatcher, RE Heidbrink, W Hill, K Hosea, JC Jarboe, TR Johnson, DW Kaita, R Kessel, C Kubota, S Kugel, HW Lawson, J LeBlanc, BP Lee, KC Levinton, F Maingi, R Manickam, J Maqueda, R Marsala, R Mastrovito, D Mau, TK Medley, SS Menard, J Meyer, H Mikkelsen, DR Mueller, D Munsat, T Nelson, BA Neumeyer, C Nishino, N Ono, M Park, H Park, W Paul, S Peebles, T Peng, M Phillips, C Pigarov, A Pinsker, R Ram, A Ramakrishnan, S Raman, R Rasmussen, D Redi, M Rensink, M Rewoldt, G Robinson, J Roney, P Roquemore, AL Ruskov, E Ryan, P Sabbagh, SA Schneider, H Skinner, CH Smith, DR Sontag, A Soukhanovskii, V Stevenson, T Stotler, D Stratton, B Stutman, D Swain, D Synakowski, E Takase, Y Taylor, G Tritz, K von Halle, A Wade, M White, R Wilgen, J Williams, M Wilson, JR Zhu, W Zweben, SJ Akers, R Beiersdorfer, P Betti, R Bigelow, T Bitter, M Bonoli, P Bourdelle, C Chang, CS Chrzanowski, J Domier, C Dudek, L Efthimion, PC Finkenthal, M Fredd, E Fu, GY Glasser, A Goldston, RJ Greenough, NL Grisham, LR Gorelenkov, N Guazzotto, L Hawryluk, RJ Hogan, J Houlberg, W Humphreys, D Jaeger, F Kalish, M Krasheninnikov, S Lao, LL Lawrence, J Leuer, J Liu, D Luhmann, NC Mazzucato, E Oliaro, G Pacella, D Parsells, R Schaffer, M Semenov, I Shaing, KC Shapiro, MA Shinohara, K Sichta, P Tang, X Vero, R Walker, D Wampler, W TI Progress towards high performance plasmas in the National Spherical Torus Experiment (NSTX) SO NUCLEAR FUSION LA English DT Article; Proceedings Paper CT 20th IAEA Fusion Energy Conference CY NOV 01-06, 2004 CL Vilamoura, PORTUGAL SP IAEA ID H-MODE PEDESTAL; HIGH-BETA; ARBITRARY COLLISIONALITY; BOOTSTRAP CURRENT; ASPECT-RATIO; LONG-PULSE; DIII-D; TOKAMAK; TURBULENCE; RECONSTRUCTION AB The major objective of the National Spherical Torus Experiment (NSTX) is to understand basic toroidal confinement physics at low aspect ratio and high beta(T) in order to advance the spherical torus (ST) concept. In order to do this, NSTX utilizes up to 7.5 MW of neutral beam injection, up to 6 MW of high harmonic fast waves (HHFWs), and it operates with plasma currents up to 1.5 MA and elongations of up to 2.6 at a toroidal field up to 0.45 T. New facility, and diagnostic and modelling capabilities developed over the past two years have enabled the NSTX research team to make significant progress towards establishing this physics basis for future ST devices. Improvements in plasma control have led to more routine operation at high elongation and high beta(T) (up to similar to 40%) lasting for many energy confinement times. beta(T) can be limited by either internal or external modes. The installation of an active error field (EF) correction coil pair has expanded the operating regime at low density and has allowed for initial resonant EF amplification experiments. The determination of the confinement and transport properties of NSTX plasmas has benefitted greatly from the implementation of higher spatial resolution kinetic diagnostics. The parametric variation of confinement is similar to that at conventional aspect ratio but with values enhanced relative to those determined from conventional aspect ratio scalings and with a B-T dependence. The transport is highly dependent on details of both the flow and magnetic shear. Core turbulence was measured for the first time in an ST through correlation reflectometry. Non-inductive start-up has been explored using PF-only and transient co-axial helicity injection techniques, resulting in up to 140 kA of toroidal current generated by the latter technique. Calculated bootstrap and beam-driven currents have sustained up to 60% of the flat-top plasma current in NBI discharges. Studies of HHFW absorption have indicated parametric decay of the wave and associated edge thermal ion heating. Energetic particle modes, most notably toroidal Alfven eigenmodes and fishbone-like modes result in fast particle losses, and these instabilities may affect fast ion confinement on devices such as ITER. Finally, a variety of techniques has been developed for fuelling and power and particle control. C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Columbia Univ, Dept Appl Phys, New York, NY 10027 USA. Univ Calif San Diego, San Diego, CA 92103 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Korea Adv Inst Sci & Technol, Taejon 305701, South Korea. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. Gen Atom Co, San Diego, CA USA. UKAEA Euratom Fus Assoc, Abingdon OX14 3DB, Oxon, England. Compx, Del Mar, CA USA. Univ Calif Irvine, Irvine, CA USA. Univ Washington, Seattle, WA 98195 USA. Univ Calif Davis, Davis, CA 95616 USA. Nova Photon, Princeton, NJ USA. Univ Colorado, Boulder, CO 80309 USA. Hiroshima Univ, Hiroshima, Japan. MIT, Cambridge, MA 02139 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Tokyo, Tokyo, Japan. Univ Rochester, Rochester, NY 14627 USA. CEA, Cadarache, France. NYU, New York, NY USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Princeton Sci Instruments, Princeton, NJ USA. ENEA, Frascati, Italy. Univ Wisconsin, Madison, WI 53706 USA. Japan Atom Energy Res Inst, Naka, Ibaraki 31101, Japan. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. EM skaye@pppl.gov RI Sabbagh, Steven/C-7142-2011; Nishino, Nobuhiro/D-6390-2011; Choe, Wonho/C-1556-2011; White, Roscoe/D-1773-2013; Stotler, Daren/J-9494-2015; Stutman, Dan/P-4048-2015; Liu, Deyong/Q-2797-2015; OI White, Roscoe/0000-0002-4239-2685; Stotler, Daren/0000-0001-5521-8718; Liu, Deyong/0000-0001-9174-7078; Davis, William/0000-0003-0666-7247; Menard, Jonathan/0000-0003-1292-3286 NR 41 TC 40 Z9 40 U1 2 U2 11 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0029-5515 EI 1741-4326 J9 NUCL FUSION JI Nucl. Fusion PD OCT PY 2005 VL 45 IS 10 BP S168 EP S180 DI 10.1088/0029-5515/45/10/S14 PG 13 WC Physics, Fluids & Plasmas SC Physics GA 982PN UT WOS:000233174200015 ER PT J AU Prager, SC Adney, J Almagri, A Anderson, J Blair, A Brower, DL Cengher, M Chapman, BE Choi, S Craig, D Combs, S Demers, DR Den Hartog, DJ Deng, B Ding, WX Ebrahimi, F Ennis, D Fiksel, G Fitzpatrick, R Foust, C Forest, CB Franz, P Frassinetti, L Goetz, J Holly, D Hudson, B Kaufman, M Lovell, T Marrelli, L Martin, P McCollam, K Mirnov, VV Nonn, P O'Connell, R Oliva, S Piovesan, P Predebon, I Sarff, JS Spizzo, G Svidzinski, V Thomas, M Uchimoto, E White, R Wyman, M AF Prager, SC Adney, J Almagri, A Anderson, J Blair, A Brower, DL Cengher, M Chapman, BE Choi, S Craig, D Combs, S Demers, DR Den Hartog, DJ Deng, B Ding, WX Ebrahimi, F Ennis, D Fiksel, G Fitzpatrick, R Foust, C Forest, CB Franz, P Frassinetti, L Goetz, J Holly, D Hudson, B Kaufman, M Lovell, T Marrelli, L Martin, P McCollam, K Mirnov, VV Nonn, P O'Connell, R Oliva, S Piovesan, P Predebon, I Sarff, JS Spizzo, G Svidzinski, V Thomas, M Uchimoto, E White, R Wyman, M TI Overview of results in the MST reversed field pinch experiment SO NUCLEAR FUSION LA English DT Article; Proceedings Paper CT Symposium on Theory of Magnetic Confinement held at the 20th IAEA Fusion Energy Conference CY NOV 01-06, 2004 CL Vilamoura, PORTUGAL SP IAEA ID TOKAMAK-LIKE CONFINEMENT; HIGH-BETA; DYNAMO; LOCKING; EDGE AB Confinement in the reversed field pinch (RFP) has been shown to increase strongly with current profile control. The MST RFP can operate in two regimes: the standard regime with a naturally occurring current density profile, robust reconnection and dynamo activity; and the improved confinement regime with strong reduction in reconnection, dynamo and transport. New results in standard plasmas include the observation of a strong two-fluid Hall effect in reconnection and dynamo, the determination that the m = 0 edge resonant mode is nonlinearly driven, and the determination that tearing modes can lock to the wall via eddy currents in the shell. New results in improved confinement plasmas include observations that such plasmas are essentially dynamo-free, contain several isolated magnetic islands (as opposed to a stochastic field) and contain reduced high frequency turbulence. Auxiliary current drive and heating is now critical to RFP research. In MST, a programme to apply auxiliary systems to the RFP is underway and progress has accrued in several techniques, including lower hybrid and electron Bernstein wave injection, ac helicity injection current drive, pellet injection and neutral beam injection. C1 Univ Wisconsin, Ctr Magnet Self Org Lab & Astrophys Plasmas, Madison, WI 53706 USA. Univ Calif Los Angeles, Los Angeles, CA USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. Rensselaer Polytech Inst, Troy, NY USA. Univ Texas, Austin, TX 78712 USA. Consorzio RFX, Assoc EUROTOM ENEA, Padua, Italy. Univ Montana, Missoula, MT USA. Princeton Plasma Phys Lab, Princeton, NJ USA. RP Prager, SC (reprint author), Univ Wisconsin, Ctr Magnet Self Org Lab & Astrophys Plasmas, Madison, WI 53706 USA. RI White, Roscoe/D-1773-2013; Marrelli, Lionello/G-4451-2013; Spizzo, Gianluca/B-7075-2009; OI White, Roscoe/0000-0002-4239-2685; Marrelli, Lionello/0000-0001-5370-080X; Spizzo, Gianluca/0000-0001-8586-2168; Ebrahimi, Fatima/0000-0003-3109-5367; Frassinetti, Lorenzo/0000-0002-9546-4494 NR 20 TC 10 Z9 10 U1 0 U2 6 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 OCT PY 2005 VL 45 IS 10 BP S276 EP S282 DI 10.1088/0029-5515/45/10/S23 PG 7 WC Physics, Fluids & Plasmas SC Physics GA 982PN UT WOS:000233174200024 ER PT J AU Friedrich, S Fliegauf, R Frank, M Veldkamp, M Labov, S Beckhoff, B Ulm, G AF Friedrich, S Fliegauf, R Frank, M Veldkamp, M Labov, S Beckhoff, B Ulm, G TI The spectral response of superconducting tunnel junction X-ray detectors SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Symposium on Applications of Linear and Area Detectors for X-Ray and Neutron Diffraction and Spectroscopy held at the E-MRS Fall Meeting CY SEP 06-10, 2004 CL Warsaw Univ Technol, Warsaw, POLAND SP E-MRS HO Warsaw Univ Technol DE superconducting tunnel junctions; X-ray spectrometers; STJ line shapes; STJ response functions; synchrotron detectors; superconducting devices ID MONOCHROMATIZED UNDULATOR RADIATION; ENERGY RESOLUTION; SYNCHROTRON-RADIATION; SPECTROMETERS; SPECTROSCOPY; PERFORMANCE AB The Advanced Detector Group at LLNL is developing superconducting Nb-Al-AlOx-Al-Nb tunnel junction detector arrays for high-resolution soft X-ray spectrometry. We have characterized the detector response function in the energy range between 50 and 2000 eV with monochromatic X-rays, in collaboration with the Physikalisch-Technische Bundesanstalt Laboratory at the BESSY II electron storage ring. The detectors have an energy resolution between 7 and 15 eV FWHM in that energy range, and a count rate capability of similar to 10,000 counts/s per detector pixel. In addition, the detector response function exhibits several spectral artifacts, and although their magnitude is only on the order of 1 % of the main line, they can reduce the sensitivity for X-ray analysis of dilute specimens if they overlap with the correspondingly weak emission lines. We have characterized these artifacts by scanning a collimated synchrotron radiation beam across the detector area. We identify their origin due to X-ray absorption at locations other than the main Nb absorber film, and outline future detector designs to reduce the artifacts and thereby extend the spectrometer sensitivity. (c) 2005 Published by Elsevier B.V. C1 Lawrence Livermore Natl Lab, Adv Detector Grp, Livermore, CA 94550 USA. Phys Tech Bundesanstalt, D-10587 Berlin, Germany. RP Friedrich, S (reprint author), Lawrence Livermore Natl Lab, Adv Detector Grp, 7000 E Ave,L-270, Livermore, CA 94550 USA. EM friedrich1@Ilnl.gov RI Ulm, Gerhard/D-4798-2009; Frank, Matthias/O-9055-2014 NR 28 TC 7 Z9 7 U1 0 U2 1 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 OCT 1 PY 2005 VL 551 IS 1 BP 35 EP 45 DI 10.1016/j.nima.2005.07.041 PG 11 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 971LT UT WOS:000232386300005 ER PT J AU Yi, JM Je, JH Chu, YS Cullen, WG You, H AF Yi, JM Je, JH Chu, YS Cullen, WG You, H TI Novel X-ray diffraction microscopy technique for measuring textured grains of thin-films SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Symposium on Applications of Linear and Area Detectors for X-Ray and Neutron Diffraction and Spectroscopy held at the E-MRS Fall Meeting CY SEP 06-10, 2004 CL Warsaw Univ Technol, Warsaw, POLAND SP E-MRS HO Warsaw Univ Technol DE X-ray diffraction; X-ray topography; textured grain ID COATED CONDUCTORS; MICROSTRUCTURE; DEFORMATION; DIMENSIONS; GROWTH AB We introduce a new X-ray diffraction microscopy technique capable of coupling grain orientation with its spatial location in textured thin-films. The principle is based on the combination of X-ray topography with diffractometry. High-resolution X-ray diffractometry using a scintillation detector is utilized to measure orientational distribution of individual grains. Then X-ray topography using CCD system is applied to determine the spatial locations of the angularly resolved grains. The successful application is demonstrated for grain-on-grain epitaxial alignment between the film and the substrate in Y2O3/Ni. The feasibility and the limitations of the technique are discussed. (c) 2005 Elsevier B.V. All rights reserved. C1 POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea. Argonne Natl Lab, Expt Facil Div, Argonne, IL 60439 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Je, JH (reprint author), POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea. EM jhje@postech.ac.kr RI You, Hoydoo/A-6201-2011 OI You, Hoydoo/0000-0003-2996-9483 NR 17 TC 1 Z9 1 U1 0 U2 2 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 OCT 1 PY 2005 VL 551 IS 1 BP 157 EP 161 DI 10.1016/j.nima.2005.07.064 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 971LT UT WOS:000232386300019 ER PT J AU Buso, GP Galassini, S Moschini, G Passi, P Zadro, A Uzunov, NM Doyle, BL Rossi, P Provencio, P AF Buso, GP Galassini, S Moschini, G Passi, P Zadro, A Uzunov, NM Doyle, BL Rossi, P Provencio, P TI PIXE microbeam analysis of the metallic debris release around endosseous implants SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 8th European Conference on Accelerators in Applied Research and Technology CY SEP 20-24, 2004 CL Natl Museum Folk Arts & Tradit, Paris, FRANCE HO Natl Museum Folk Arts & Tradit DE endosseous debris; titanium; dental implants ID IN-VITRO; TITANIUM; CULTURE; CELLS AB The mechanical friction that occurs during the surgical insertion of endosseous implants, both in dentistry and orthopaedics, may cause the detachment of metal debris which are dislodged into the peri-implant tissues and can lead to adverse clinical effects. This phenomenon more likely happens with coated or roughened implants that are the most widely employed. In the present study were studied dental implants screws made of commercially pure titanium and coated using titanium plasma-spray (TPS) technique. The implants were inserted in the tibia of rabbits, and removed "en bloc" with the surrounding bone after one month. After proper processing and mounting on plastic holders, samples from bones were analysed by EDXRF setup at of National Laboratories of Legnaro, INFN, Italy, and consequently at 3 MeV proton microbeam setup at Sandia National Laboratories. Elemental maps were drawn, showing some occasional presence of metal particles in the peri-implant bone. (c) 2005 Elsevier B.V. All rights reserved. C1 Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, PD, Italy. Univ Verona, Fac Med, DMSP, I-37100 Verona, Italy. Univ Padua, Dept Phys, Padua, Italy. Univ Padua, Sch Dent, Padua, Italy. Univ Shumen, Dept Nat Sci, Shumen, Bulgaria. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Uzunov, NM (reprint author), Ist Nazl Fis Nucl, Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, PD, Italy. EM uzunov@lnl.infn.it NR 10 TC 2 Z9 2 U1 0 U2 1 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 OCT PY 2005 VL 240 IS 1-2 BP 91 EP 94 DI 10.1016/j.nimb.2005.06.094 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 983CJ UT WOS:000233208400020 ER PT J AU Allain, JP Ruzic, DN Alman, DA Coventry, MD AF Allain, JP Ruzic, DN Alman, DA Coventry, MD TI A model for ion-bombardment induced erosion enhancement with target temperature in liquid lithium SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE molecular dynamics; liquid lithium; sputtering; TRIMSP; MDTRIM ID ATOMIC-COLLISION CASCADES; NONEQUILIBRIUM ENERGY-TRANSPORT; MOLECULAR-DYNAMICS; SPUTTERING YIELD; COMPUTER-SIMULATION; CYLINDRICAL TRACK; SPIKE MODELS; SURFACE; DEPENDENCE; EMISSION AB Sputtering does not vary strongly with target temperature for most solid materials. Sputtering yield measurements of liquid lithium self-sputtering for energies of 200-1000 eV at oblique incidence, however, show an enhancement near an order of magnitude as the temperature of the liquid lithium target is increased from near its melting point at 473 K up to about 690 K (similar to 1.5T(m)) after accounting for thermal evaporation. A new model that couples both the near-surface cascade of the hot liquid metal and the effect of multiple interaction mechanisms on the binding of the emitted particle explains this anomalous erosion enhancement with target temperature. The model, has been validated using a new hybrid computational tool named MD-TRIM (molecular dynamics in transport of ions in matter), at 473 K and 653 K and compared to experimental data. MD-TRIM consists of molecular dynamics and binary collision approximation (BCA) codes, TRIM (transport of ions in matter). The MD-TRIM code was designed to aid in understanding erosion enhancement mechanisms of lithium self-bombardment sputtering at low bombarding energies with a rise in target temperature. MD calculations alone do not show the sputtering enhancement with temperature rise due to an inadequate surface potential model. (c) 2005 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Illinois, Urbana, IL 61801 USA. RP Allain, JP (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM allain@anl.gov OI Allain, Jean Paul/0000-0003-1348-262X NR 52 TC 8 Z9 8 U1 0 U2 8 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 OCT PY 2005 VL 239 IS 4 BP 347 EP 355 DI 10.1016/j.nimb.2005.05.054 PG 9 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 977JQ UT WOS:000232800000005 ER PT J AU Ding, YS Fowler, J AF Ding, YS Fowler, J TI New-generation radiotracers for nAChR and NET SO NUCLEAR MEDICINE AND BIOLOGY LA English DT Article DE nicotinic acetylcholine receptor (nAChR); norepinephrine transporter (NET); 6-F-A-85380; reboxetine; methylreboxetine; PET ID NICOTINIC ACETYLCHOLINE-RECEPTORS; POSITRON-EMISSION-TOMOGRAPHY; NOREPINEPHRINE UPTAKE SITES; RAT-BRAIN MEMBRANES; IN-VIVO BINDING; RHESUS-MONKEY; ENANTIOMERIC RESOLUTION; LABELED NOREPINEPHRINE; PARKINSONS-DISEASE; REBOXETINE ANALOGS AB Advances in radiotracer chemistry and instrumentation have merged to make positron emission tomography (PET) a powerful tool in the biomedical sciences. Positron emission tomography has found increased application in the study of drugs affecting the brain and whole body, including the measurement of drug pharmacokinetics (using a positron-emitter-labeled drug) and drug pharmacodynamics (using a labeled tracer). Thus, radiotracers are major scientific tools enabling investigations of molecular phenomena, which are at the heart of understanding human disease and developing effective treatments; however, there is evidently a bottleneck in translating basic research to clinical practice. In the meantime, the poor ability to predict the in vivo behavior of chemical compounds based on their log P's and affinities emphasizes the need for more knowledge in this area. In this article, we focus on the development and translation of radiotracers for PET studies of the nicotinic acetylcholine receptor (nAChR) and the norepinephrine transporter (NET), two molecular systems that urgently need such an important tool to better understand their functional significance in the living human brain. Published by Elsevier Inc. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Ding, YS (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM ding@bnl.gov FU NIBIB NIH HHS [EB002630]; NIDA NIH HHS [DA-06278] NR 90 TC 27 Z9 27 U1 1 U2 2 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0969-8051 J9 NUCL MED BIOL JI Nucl. Med. Biol. PD OCT PY 2005 VL 32 IS 7 BP 707 EP 718 DI 10.1016/j.nucmelbio.2005.04.017 PG 12 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 982QS UT WOS:000233177300008 PM 16243646 ER PT J AU Su, FM Beaumier, P Axworthy, D Atcher, R Fritzberg, A AF Su, FM Beaumier, P Axworthy, D Atcher, R Fritzberg, A TI Pretargeted radioimmunotherapy in tumored mice using an in vivo Pb-212/Bi-212 generator SO NUCLEAR MEDICINE AND BIOLOGY LA English DT Article DE radioimmunotherapy; pre-targeting; in situ radionuclide generator; tumor; lead-212; bismuth-212; radionuclide therapy ID ANTIBODY; THERAPY AB Objective: Pretargeting is the concept that combines optimal delivery of the antibody and rapid capture and elimination of the radioactivity. In this study, we evaluated the potential of antibody pretargeting to enable the tumor-targeting Pb-212 for in vivo generation of Bi-212 for alpha particle radiotherapy. Methods: The Pb-212/Bi-212 chelate of DOTA-biotin, as well as their gamma-emitting analogues, Pb-203 and Bi-205, was prepared and characterized. The radiolabeled compounds were injected in animals for evaluation of tumor targeting and normal tissue uptake and retention. In the pretargeting protocol, injection of 400 mu g of NR-LU-10 antibody-streptavidin conjugate was given at t = 0 h, then 100 mu g of N-acetyl-galatosamine-biotin clearing agent was injected at t=20-24 h; final ly, 1 mu g of Pb-212/Bi-212-DOTA-biotin was injected 6 h later. Results: Both Pb-203 and Bi-205-DOTA-biotin were stable for at least 4 days in the different challenging solutions including PBS, 10 mM DTPA and serum. Contrary to its gamma-emitting analogues, radiolabeled Pb-212-DOTA-biotin was not stable. There was greater than 30% of free Bi-212 released 4 h after Pb-212-labeled DOTA-biotin. The results of pretargeting protocol of Pb-203 and Bi-205-DOTA-biotin showed that the tumor target reached 20% injected dose (ID)/g at 4 h postinjection and remained high for 5 days. The %ID/g in the whole blood and other nontarget organs was low after administration of labeled Pb-203 and Bi-205-DOTA-biotin similar to the biodistribution of labeled DOTA-biotin alone. In the animals administered Pb-212-DOTA-biotin, radioactivity in nontarget organs was low except the kidneys. The %ID/g in the kidney for Bi-212 was 14.5 at 2 h, higher than Pb-212, but dropped to about 6% ID/g by 4 h. However, tumor uptake for Pb-212 and Bi-212 was > 25% ID/g at I h postinjection and remained so through 24 h. Conclusions: Antibody pretargeting system with Mab-streptavidin, clearing agent and DOTA-biotin provides the potential of Bi-212 for solid tumor radiotherapy despite the release of Bi-212 after Pb-212 decay. Dosimetry calculations resulted in tumor dose at 93 rad/mu Ci and ratios of tumor to mar-row and kidney at 386:1 and 12:1, respectively. (c) 2005 Elsevier Inc. All rights reserved. C1 NEORX Corp, Seattle, WA 98119 USA. Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. RP Su, FM (reprint author), Bristol Myers Squibb Med Imaging, N Billerica, MA 01862 USA. OI Atcher, Robert/0000-0003-4656-2247 FU NCI NIH HHS [1R43CA71221-1A1] NR 16 TC 19 Z9 19 U1 1 U2 4 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0969-8051 J9 NUCL MED BIOL JI Nucl. Med. Biol. PD OCT PY 2005 VL 32 IS 7 BP 741 EP 747 DI 10.1016/j.nucmedbio.2005.06.009 PG 7 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 982QS UT WOS:000233177300012 PM 16243650 ER PT J AU Redlinger, G AF Redlinger, G TI Plans for Koan Physics at BNL SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Article; Proceedings Paper CT Workshop on High Intensity Frontier CY JUN 05-08, 2004 CL Isola Elba, ITALY SP INFN, Univ Posa, Assoc Frontier Detectors Frontier Phys ID FIBER READOUT; DECAY; SEARCH; MODEL AB I give an overview of current plans for kaon physics at BNL. The program is centered around the rare decay modes K+ -> pi(+) v (v) over bar and K-L - pi(0)v (v) over bar. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Redlinger, G (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. EM redlinger@bnl.gov NR 16 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD OCT PY 2005 VL 147 BP 45 EP 54 DI 10.1019/j.nuclphysbps.2005.03.007 PG 10 WC Physics, Particles & Fields SC Physics GA 935AU UT WOS:000229752000008 ER PT J AU Morel, JE Warsa, JS AF Morel, JE Warsa, JS TI An S-n spatial discretization scheme for tetrahedral meshes SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID NUMERICAL TRANSPORT PROBLEMS; ASYMPTOTIC SOLUTIONS; DIFFUSIVE REGIMES; OPTICALLY THICK AB A lumped, linear discontinuous spatial discretization for S-n calculations on tetrahedral meshes is described This method is designed for applications such as thermal radiative transfer, where resistance to negative solutions and good performance in the thick diffusion limit are essential. The method described has very desirable properties in both the transport regime and the diffusion limit. In particular, the method has enhanced damping of negativities via lumping, second-order accuracy in the transport regime, and a second-order accurate symmetric positive - definite diffusion discretization in the thick diffusion limit that yields well-behaved solutions with unresolved spatial boundary layers. While it is often thought that inaccuracies result when high-aspect-ratio tetrahedra are used to resolve boundary layers, accurate solutions can in fact be computed using high-aspect-ratio tetrahedra if the shape and orientation of the tetrahedra are properly restricted in the boundary layer. C1 Los Alamos Natl Lab, Comp & Computat Sci Div, Los Alamos, NM 87545 USA. RP Morel, JE (reprint author), Los Alamos Natl Lab, Comp & Computat Sci Div, Los Alamos, NM 87545 USA. EM morel@ne.tamu.edu NR 11 TC 11 Z9 11 U1 1 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD OCT PY 2005 VL 151 IS 2 BP 157 EP 166 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 967US UT WOS:000232117300002 ER PT J AU Booth, TE AF Booth, TE TI Insights into stratified splitting techniques for Monte Carlo neutron transport SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article AB Several different stratified splitting techniques for sampling the distance to collision are compared with the standard (unstratified) weight window splitting used in MCNP. The results indicate that typical neutron penetration problems could be modestly more efficient using one of the stratified splitting techniques. For many penetration problems, one of the simplest techniques compares favorably with several more complicated techniques. As a cautionary note, a very highly scattering neutron penetration problem shows that some stratification techniques do not always reduce the variance of the score distribution. C1 Los Alamos Natl Lab, Diagnost Applicat Grp X5, Los Alamos, NM 87545 USA. RP Booth, TE (reprint author), Los Alamos Natl Lab, Diagnost Applicat Grp X5, Mail Stop F663, Los Alamos, NM 87545 USA. EM teb@lanl.gov NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD OCT PY 2005 VL 151 IS 2 BP 224 EP 236 PG 13 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 967US UT WOS:000232117300007 ER PT J AU Chang, SH Baek, WP Rempe, J AF Chang, SH Baek, WP Rempe, J TI Nuclear Reactor Thermal Hydraulics (NURETH-10) special issue - part 1 - Foreword SO NUCLEAR TECHNOLOGY LA English DT Editorial Material C1 Korea Adv Inst Sci & Technol, Seoul, South Korea. Korea Atom Energy Res Inst, Taejon, South Korea. Idaho Natl Engn & Environm Lab, Idaho Falls, ID USA. RP Chang, SH (reprint author), Korea Adv Inst Sci & Technol, Seoul, South Korea. RI Chang, Soon Heung/C-1858-2011 NR 0 TC 2 Z9 2 U1 0 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD OCT PY 2005 VL 152 IS 1 BP 1 EP 1 PG 1 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 963NU UT WOS:000231811800001 ER PT J AU Kohen, R Kirov, S Navaja, GP Happe, HK Hamblin, MW Snoddy, JR Neumaier, JF Petty, F AF Kohen, R Kirov, S Navaja, GP Happe, HK Hamblin, MW Snoddy, JR Neumaier, JF Petty, F TI Gene expression profiling in the hippocampus of learned helpless and nonhelpless rats SO PHARMACOGENOMICS JOURNAL LA English DT Article DE gene expression profiling; animal model; learned helplessness; stress; depression; regulation of gene expression ID MESSENGER-RNA LEVELS; STRESSFUL LIFE EVENTS; DORSAL RAPHE NUCLEUS; MAJOR DEPRESSION; ANIMAL-MODEL; TIME-COURSE; TRANSCRIPTIONAL REGULATION; RECEPTOR SUBUNITS; ALPHA-SUBUNIT; ESTROUS-CYCLE AB In the learned helplessness ( LH) animal model of depression, failure to attempt escape from avoidable environmental stress, LH, indicates behavioral despair, whereas nonhelpless ( NH) behavior reflects behavioral resilience to the effects of environmental stress. Comparing hippocampal gene expression with large- scale oligonucleotide microarrays, we found that stress- resilient ( NH) rats, although behaviorally indistinguishable from controls, showed a distinct gene expression profile compared to LH, sham stressed, and naive control animals. Genes that were confirmed as differentially expressed in the NH group by quantitative PCR strongly correlated in their levels of expression across all four animal groups. Differential expression could not be confirmed at the protein level. We identified several shared degenerate sequence motifs in the 30 untranslated region ( 3'UTR) of differentially expressed genes that could be a factor in this tight correlation of expression levels among differentially expressed genes. C1 Univ Washington, Dept Psychiat & Behav Sci, GRECC, VAPSHCS, Seattle, WA 98108 USA. Univ Tennessee, Oak Ridge Natl Lab, Oak Ridge, TN USA. Creighton Univ, Dept Psychiat, Omaha, NE 68178 USA. Creighton Univ, Omaha VAMC, Omaha, NE 68178 USA. Univ Washington, Harborview Med Ctr, Seattle, WA 98104 USA. RP Kohen, R (reprint author), Univ Washington, Dept Psychiat & Behav Sci, GRECC, VAPSHCS, 182B,1660 S Columbian Way, Seattle, WA 98108 USA. EM ruko@u.washington.edu NR 60 TC 25 Z9 26 U1 1 U2 1 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1470-269X J9 PHARMACOGENOMICS J JI Pharmacogenomics J. PD OCT PY 2005 VL 5 IS 5 BP 278 EP 291 DI 10.1038/sj.tpj.6500322 PG 14 WC Genetics & Heredity; Pharmacology & Pharmacy SC Genetics & Heredity; Pharmacology & Pharmacy GA 968FK UT WOS:000232147100001 PM 16010284 ER PT J AU Ignatiev, KI Lee, WK Fezzaa, K Stock, SR AF Ignatiev, KI Lee, WK Fezzaa, K Stock, SR TI Phase contrast stereometry: fatigue crack mapping in three dimensions SO PHILOSOPHICAL MAGAZINE LA English DT Article ID X-RAY MICROTOMOGRAPHY; AL-LI 2090; SYNCHROTRON-RADIATION; ABSORPTION MICROTOMOGRAPHY; COMPUTED-TOMOGRAPHY; APPLIED LOAD; CLOSURE; T8E41; MICROTEXTURE; MICROSCOPE AB The work reported below describes development of a novel method, termed X-ray phase contrast stereometry, for reconstructing the three-dimensional (3D) positions of features within a specimen. The approach takes measured positions of a given feature in phase microradiographs recorded at different viewing angles and refines that feature's position numerically. The approach is designed to address limitations in conventional laboratory or synchrotron X-ray absorption micro computed tomography (microCT), particularly those inherent in studying plate-like samples. The phase stereometric reconstruction technique was applied to a small compact tension sample of aluminium alloy AA 2090 (20.3 mm wide from notch tip to back face and 2.7 mm thick) containing a fatigue crack and was used to map the 3D crack surface non-invasively. Up to ten viewing angles were used for each of 2269 points mapped on the approximately 2.7mm x 6.0 mm surface. The 3D stereometry-derived crack surface agreed with the surface map from absorption microCT of the same sample. The phase technique was superior in terms of its crack sensitivity; the phase images allowed the crack to be followed to its tip, even with zero applied load while absorption microCT could only detect about 5 mm of the crack 6 mm long when loaded to 40 kgf. The origin of the contrast used for stereometric mapping was confirmed to be from the peaks on the crack face; phase microradiographs from a second ( intact) sample showed a pattern of features identical with those revealed on the surface when the sample was split open. Crack opening as a function of in-situ load was measured for the same points on the crack surface using both phase stereometry and absorption microCT; the openings were in good agreement. C1 Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. Argonne Natl Lab, XOR, Adv Photon Source, Argonne, IL 60439 USA. Northwestern Univ, Inst BioNanotechnol Med, Chicago, IL 60611 USA. EM s-stock@northwestern.edu NR 50 TC 12 Z9 13 U1 0 U2 6 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PD OCT 1 PY 2005 VL 85 IS 28 BP 3273 EP 3300 DI 10.1080/14786460500155387 PG 28 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 968XE UT WOS:000232195500002 ER PT J AU Mitlin, D Misra, A Mitchell, TE Hirth, JP Hoagland, RG AF Mitlin, D Misra, A Mitchell, TE Hirth, JP Hoagland, RG TI Interface dislocation structures at the onset of coherency loss in nanoscale Ni-Cu bilayer films SO PHILOSOPHICAL MAGAZINE LA English DT Article ID THREADING DISLOCATIONS; EPITAXIAL MULTILAYERS; MISFIT DISLOCATIONS; 001 PLANES; DEFECTS; GLIDE; STEPS AB have performed a transmission electron microscopy study, using weak beam imaging, of the interface dislocation arrays that form initially at the (001) Ni-Cu interface during coherency loss. Interface dislocations were absent in the 2.5 nm Ni/100nm Cu bilayers, but were present in the 3.0 nm Ni samples, indicating that the critical Ni film thickness for coherency loss is between 2.5 and 3 nm. The key features of the interface dislocation structure at the onset of coherency loss are: (i) the majority of interface dislocations are 60 degrees dislocations, presumably formed by glide of threading dislocations in the coherently stressed Ni layer, and have Burgers vector in the {111} glide plane; (ii) the interface contained approximately 5% Lomer edge dislocations, with Burgers vector in the {001} interface plane, and an occasional Shockley partial dislocation and (iii) isolated segments of interface dislocations terminating at the surface are regularly observed. Possible mechanisms that lead to these dislocation configurations at the interface are discussed. This experimental study shows that near the critical thickness, accumulation of interface dislocations occurs in a somewhat stochastic fashion with favourable regions where coherency is first lost. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Mitlin, D (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, POB 1663, Los Alamos, NM 87545 USA. EM dmitlin@ualberta.ca RI Hoagland, Richard/G-9821-2012; Misra, Amit/H-1087-2012; Mitlin , David /M-5328-2016 OI Mitlin , David /0000-0002-7556-3575 NR 16 TC 22 Z9 24 U1 1 U2 19 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PD OCT 1 PY 2005 VL 85 IS 28 BP 3379 EP 3392 DI 10.1080/14786430500145271 PG 14 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 968XE UT WOS:000232195500006 ER PT J AU Ganjoo, A Jain, H Khalid, S Pantano, CG AF Ganjoo, A Jain, H Khalid, S Pantano, CG TI Structural modification of Ge-Se amorphous films with the addition of Sb SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article ID ABSORPTION FINE-STRUCTURE; ORDER; SOLIDS; GESE2 AB Extended X-ray absorption fine-structure (EXAFS) measurements were undertaken to understand the structural modi. cation of amorphous Ge - Se films that occurs with the addition of Sb. We found that Ge - Ge bonds exist along with Ge - Se bonds in Ge-rich Ge - Se films. These bonds disappear with increasing Se content, to the extent that Ge - Se bonds predominate in stoichiometric GeSe2 films. When Ge is replaced by Sb, stable Sb - Se bonds are formed; concurrently, the proportion of Ge - Ge bonds is decreased at the expense of Ge - Se bonds. As a result, GeSbSe glasses have a more stable and stronger network structure. C1 Lehigh Univ, Ctr Opt Technol, Bethlehem, PA 18018 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA. RP Jain, H (reprint author), Lehigh Univ, Ctr Opt Technol, Bethlehem, PA 18018 USA. EM h.jain@lehigh.edu NR 15 TC 19 Z9 19 U1 1 U2 10 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PD OCT PY 2005 VL 85 IS 10 BP 503 EP 512 DI 10.1080/09500830500318841 PG 10 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 997EP UT WOS:000234228100001 ER PT J AU Hagberg, A Marts, B Lin, AL Meron, E AF Hagberg, A Marts, B Lin, AL Meron, E TI Bloch-front turbulence: theory and experiments SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT 14th Conference on Nonequilibrium Statistical Mechanics and Nonlinear Physics (MEDYFINOL 04) CY DEC 06-10, 2004 CL La Serena, CHILE SP Univ Chile, Sho Phys & Math Sci, Univ Buenos Aires, Sch Exact & Nat Sci, Univ Los andes, Sch Engn DE pattern formation; Belousov-Zhabotinsky reaction; Ginzburg-Landau ID DEFECT-MEDIATED TURBULENCE; REACTION-DIFFUSION SYSTEMS; GINZBURG-LANDAU EQUATION; PATTERN-FORMATION; BIFURCATIONS; TRANSITION; INTERFACE; MOTION AB We report on experimental and theoretical findings of front destabilization that causes spontaneous spiral-vortex nucleation and produces a state of spatio-temporal disorder. The experiments were carried out on an oscillatory photosensitive Belousov-Zhabotinsky reaction that is periodically forced in time. Numerical studies were carried out on a modified Complex Ginzburg-Landau equation and on the FitzHugh-Nagumo model. Using velocity-curvature relations for fronts we associate the onset of spatio-temporal disorder with the Non-equilibrium Ising Bloch (NIB) bifurcation, and study the generic patterns that form on both sides of the bifurcation as the distance from it is increased. (c) 2005 Elsevier B.V. All rights reserved. C1 Duke Univ, Ctr Nonlinear & Complex Syst, Durham, NC 27708 USA. Duke Univ, Dept Phys, Durham, NC 27708 USA. Ben Gurion Univ Negev, BIDR, Dept Solar Energy & Environm Phys, IL-84990 Sede Boqer, Israel. Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel. RP Los Alamos Natl Lab, Math Modeling & Anal Theoret Div, POB 1663, Los Alamos, NM 87545 USA. EM hagberg@lanl.gov RI MERON, EHUD/F-1810-2012 NR 21 TC 1 Z9 1 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 EI 1873-2119 J9 PHYSICA A JI Physica A PD OCT 1 PY 2005 VL 356 IS 1 BP 88 EP 94 DI 10.1016/j.physa.2005.05.018 PG 7 WC Physics, Multidisciplinary SC Physics GA 960FA UT WOS:000231574400017 ER PT J AU Reshchikov, MA Huang, D He, L Morkoc, H Jasinski, J Liliental-Weber, Z Park, SS Lee, KY AF Reshchikov, MA Huang, D He, L Morkoc, H Jasinski, J Liliental-Weber, Z Park, SS Lee, KY TI Manifestation of edge dislocations in photoluminescence of GaN SO PHYSICA B-CONDENSED MATTER LA English DT Article DE dislocations; photoluminescence; GaN ID CHEMICAL-VAPOR-DEPOSITION; THREADING-EDGE; SCREW DISLOCATIONS; GALLIUM NITRIDE; LUMINESCENCE; DEFECTS; EPITAXY; CHARGE AB A GaN layer was grown by molecular beam epitaxy on a freestanding GaN template prepared by hydride vapor-phase epitaxy. Two characteristic areas have been found in the overgrown layer: a region nearly free from dislocations and a region with the density of the edge dislocations of similar to 5 x 10(9) cm(-2), as determined by transmission electron microscopy. Low-temperature photoluminescence spectrum from the former contained only well-known exciton lines, whereas the spectrum of the defective area contained additional lines at 3.21 and 3.35 eV. These lines are attributed to unidentified point defects trapped by the edge threading dislocations. (c) 2005 Elsevier B.V. All rights reserved. C1 Virginia Commonwealth Univ, Dept Elect Engn, Richmond, VA 23284 USA. Virginia Commonwealth Univ, Dept Phys, Richmond, VA 23284 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Samsung Adv Inst Technol, Suwon 440600, South Korea. RP Reshchikov, MA (reprint author), Virginia Commonwealth Univ, Dept Elect Engn, Med Coll Virginia Campus, Richmond, VA 23284 USA. EM mreshchi@saturn.vcu.edu RI Liliental-Weber, Zuzanna/H-8006-2012 NR 26 TC 6 Z9 6 U1 1 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD OCT 1 PY 2005 VL 367 IS 1-4 BP 35 EP 39 DI 10.1016/j.physb.2005.05.044 PG 5 WC Physics, Condensed Matter SC Physics GA 967FD UT WOS:000232076000005 ER PT J AU Crabtree, GW Kwok, WK Olsson, R Karapetrov, G Paulius, L AF Crabtree, GW Kwok, WK Olsson, R Karapetrov, G Paulius, L TI Anisotropic pinning in the vortex liquid phase of YBCO SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT 17th International Symposium on Superconductivity CY NOV 23-25, 2004 CL Niigata, JAPAN DE vortex liquid; bose glass; anisotropic pinning; YBCO ID BOSE-GLASS TRANSITION; HIGH-TEMPERATURE SUPERCONDUCTORS; LATTICE-MELTING TRANSITION; COLUMNAR DEFECTS; HIGH-DENSITY; UPPER LIMIT; II SUPERCONDUCTORS; YBA2CU3O7; FLUCTUATIONS; CRYSTALS AB Columnar defects are shown to produce anisotropic pinning in the vortex liquid state of YBCO. We interpret the disappearance of anisotropic pinning as signaling the loss of longitudinal correlation of vortices as thermal fluctuations dominate their line tension. (c) 2005 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA. RP Crabtree, GW (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM crabtree@anl.gov RI Karapetrov, Goran/C-2840-2008 OI Karapetrov, Goran/0000-0003-1113-0137 NR 15 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD OCT 1 PY 2005 VL 426 BP 14 EP 17 DI 10.1016/j.physc.2005.01.015 PN 1 PG 4 WC Physics, Applied SC Physics GA 975XX UT WOS:000232698500005 ER PT J AU Sasagawa, T Lanzara, A Gweon, GH Zhou, S Graf, J Suryadijaya Takagi, H AF Sasagawa, T Lanzara, A Gweon, GH Zhou, S Graf, J Suryadijaya Takagi, H TI Oxygen isotope effect on electron dynamics in Bi2Sr2CaCu2Oy: angle-resolved photoemission spectroscopy SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT 17th International Symposium on Superconductivity CY NOV 23-25, 2004 CL Niigata, JAPAN DE Bi2Sr2CaCu2Oy; ARPES; electronic structure; isotope effect ID DISPERSION; PHONONS AB In order to directly examine the impact of phonons in electronic structure, angle-resolved photoemission spectroscopy (ARPES) measurements have been performed on optimally doped Bi2Sr2CuCu2Oy (T-c similar to 92 K) upon oxygen isotope substitution. The obtained ARPES data show clear and giant changes induced by O-16 -> O-18 exchange, which are found to be strongly energy, momentum dependent and effective only at low temperatures (T < T-c). This direct observation of unconventional electron-phonon interactions should urge reconsideration of the role of phonons in high-T-c materials. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778561, Japan. CREST, JST Agcy, Kawaguchi, Saitama 3320012, Japan. Univ Calif Berkeley, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Sasagawa, T (reprint author), Univ Tokyo, Dept Adv Mat Sci, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778561, Japan. EM takao@mail.ecc.u-tokyo.ac.jp RI Zhou, Shuyun/A-5750-2009; Takagi, Hidenori/B-2935-2010; Sasagawa, Takao/E-6666-2014 OI Sasagawa, Takao/0000-0003-0149-6696 NR 9 TC 2 Z9 2 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD OCT 1 PY 2005 VL 426 BP 436 EP 440 DI 10.1016/j.physc.2004.12.023 PN 1 PG 5 WC Physics, Applied SC Physics GA 975XX UT WOS:000232698500087 ER PT J AU Matsumura, T Hanany, S Hull, JR Johnson, B Jones, T Oxley, PK AF Matsumura, T Hanany, S Hull, JR Johnson, B Jones, T Oxley, PK TI Development of a cryogenic induction motor for use with a superconducting magnetic bearing SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT 17th International Symposium on Superconductivity CY NOV 23-25, 2004 CL Niigata, JAPAN DE astrophysical polarimeter; induction motor; superconducting magnetic bearings C1 Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. Univ Cardiff Wales, Cardiff CF24 3YB, Wales. RP Matsumura, T (reprint author), 116 Church St SE, Minneapolis, MN 55455 USA. EM tmatsumu@physics.umn.edu NR 5 TC 4 Z9 4 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD OCT 1 PY 2005 VL 426 BP 746 EP 751 DI 10.1016/j.physc.2005.02.075 PN 1 PG 6 WC Physics, Applied SC Physics GA 975XX UT WOS:000232698500144 ER PT J AU Xie, YY Knoll, A Chen, Y Li, Y Xiong, X Qiao, Y Hou, P Reeves, J Salagaj, T Lenseth, K Civale, L Maiorov, B Iwasa, Y Solovyov, V Suenaga, M Cheggour, N Clickner, C Ekin, JW Weber, C Selvamanickam, V AF Xie, YY Knoll, A Chen, Y Li, Y Xiong, X Qiao, Y Hou, P Reeves, J Salagaj, T Lenseth, K Civale, L Maiorov, B Iwasa, Y Solovyov, V Suenaga, M Cheggour, N Clickner, C Ekin, JW Weber, C Selvamanickam, V TI Progress in scale-up of second-generation high-temperature superconductors at SuperPower Inc SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT 17th International Symposium on Superconductivity (ISS 2004) CY NOV 23-25, 2004 CL Niigata, JAPAN DE second-generation HTS wire; coated conductors; electropolishing; magnetic field; Ac losses; narrow conductor; cable; stress; strain; mechanical properties ID CHEMICAL-VAPOR-DEPOSITION; CRITICAL-CURRENT DENSITY; YBCO-COATED CONDUCTORS; THIN-FILMS; LASER DEPOSITION; BUFFER LAYERS; TAPES; MOCVD AB SuperPower is focused on scaling up second-generation (2-G) high-temperature superconductor (HTS) technology to pilot-scale manufacturing. The emphasis of this program is to develop R&D solutions for scale-up issues in pilot-scale operations to lay the foundation for a framework for large-scale manufacturing. Throughput continues to be increased in all process steps including substrate polishing, buffer and HTS deposition. 2-G I-ITS conductors have been produced in lengths up to 100 m. Process optimization with valuable information provided by several unique process control and quality-control tools has yielded performances of 6000-7000 A m (77 K, 0 T) in 50-100 m lengths using two HTS fabrication processes: metal organic chemical vapor deposition (MOCVD) and pulsed laser deposition (PLD). Major progress has been made towards the development of practical conductor configurations. Modifications to the HTS fabrication process have resulted in enhanced performance in magnetic fields. Industrial slitting and electroplating processes have been successfully adopted to fabricate tapes in width of 4 mm and with copper stabilizer for cable and coil applications. SuperPower's conductor configuration has yielded excellent mechanical properties and overcurrent carrying capability. Over 60 m of such practical conductors with critical current over 100 A/cm-width have been delivered to Sumitomo Electric Industries, Ltd. for prototype cable construction. (c) 2005 Elsevier B.V. All rights reserved. C1 SuperPower Inc, Schenectady, NY 12304 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. MIT, Cambridge, MA 02139 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Natl Inst Stand & Technol, Boulder, CO 80305 USA. RP SuperPower Inc, 450 Duane Ave, Schenectady, NY 12304 USA. EM yxie@igc.com RI Solovyov, Vyacheslav/A-7724-2009; Cheggour, Najib/K-2769-2012; OI Cheggour, Najib/0000-0002-0741-3065; Solovyov, Vyacheslav/0000-0003-1879-9802; Maiorov, Boris/0000-0003-1885-0436 NR 23 TC 33 Z9 36 U1 4 U2 17 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 EI 1873-2143 J9 PHYSICA C JI Physica C PD OCT 1 PY 2005 VL 426 BP 849 EP 857 DI 10.1016/j.physc.2005.03.071 PN 2 PG 9 WC Physics, Applied SC Physics GA 975XZ UT WOS:000232698700001 ER PT J AU Lee, DF Christen, HM List, FA Heatherly, L Leonard, KJ Rouleau, CM Cook, SW Martin, PM Paranthaman, M Goyal, A AF Lee, DF Christen, HM List, FA Heatherly, L Leonard, KJ Rouleau, CM Cook, SW Martin, PM Paranthaman, M Goyal, A TI R&D of RABiTS-based coated conductors: Conversion of ex situ YBCO superconductor using a novel pulsed electron-beam deposited precursor SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT 17th International Symposium on Superconductivity CY NOV 23-25, 2004 CL Niigata, JAPAN DE thin films; coated conductors; epitaxy; ex situ; reaction rates ID CRITICAL-CURRENT DENSITY; BUFFER LAYERS; FILMS; YBA2CU3O7; TAPES; PERFORMANCE; GROWTH AB Pulsed electron deposition (PED), an ablation-based film growth technique similar to pulsed-laser deposition, is a relatively new method for the physical vapor deposition (PVD) of films. In the area of PVD ex situ superconductor precursor deposition, PED is potentially simpler and more versatile than its traditional e-beam co-evaporation counterpart. We have deposited near-stoichiometric YF3-BaF2-CUO PED precursors of various thicknesses in moving configuration on RABiTS substrates. Critical current densities (J(c)) as high as 1.6 MA/cm(2) have been achieved on these precursors converted at standard slow rates of roughly 1 angstrom/s, which has previously been necessary for high performance PVD precursors. More importantly, these as-deposited PED precursors were found to be able to tolerate aggressive conversion conditions. Consequently, simultaneous attainment of high conversion rate of nearly 8 angstrom/s and high J(c) of 1 MA/cm(2) has been realized. (c) 2005 Elsevier B.V. All rights reserved. C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Lee, DF (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008,Bldg 4500S, Oak Ridge, TN 37831 USA. EM leedf@ornl.gov RI Christen, Hans/H-6551-2013; Paranthaman, Mariappan/N-3866-2015; Rouleau, Christopher/Q-2737-2015 OI Christen, Hans/0000-0001-8187-7469; Paranthaman, Mariappan/0000-0003-3009-8531; Rouleau, Christopher/0000-0002-5488-3537 NR 22 TC 6 Z9 7 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD OCT 1 PY 2005 VL 426 BP 878 EP 886 DI 10.1016/j.physc.2005.02.143 PN 2 PG 9 WC Physics, Applied SC Physics GA 975XZ UT WOS:000232698700005 ER PT J AU Balachandran, U Maroni, VA Miller, DJ Trasobares, S Lei, Y Hiller, JM Gray, KE Vlasko-Vlasov, V Welp, U Claus, H Reeves, J AF Balachandran, U Maroni, VA Miller, DJ Trasobares, S Lei, Y Hiller, JM Gray, KE Vlasko-Vlasov, V Welp, U Claus, H Reeves, J TI Characterization of coated conductors by magneto-optical imaging, Raman spectroscopy, and electron microscopy SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT 17th International Symposium on Superconductivity (ISS 2004) CY NOV 23-25, 2004 CL Niigata, JAPAN DE high temperature superconductors; YBCO superconductor; Raman microspectroscopy; focused ion milling; electron energy loss spectroscopy ID X-RAY-DIFFRACTION; FILMS AB Argonne National Laboratory has established and implemented a coordinated set of characterization methods for coated-conductor specimens that can be applied in a manner compatible with further processing or utilization of the respective specimen. These characterization methods include measurements of superconductor transport properties, phase composition, microstructure, and epitaxy quality for YBCO-coated conductors that range in size up to multimeters. Recent progress will be reported on the integrated application of Raman microscopy, magneto-optical imaging, and focused-ion-beam-assisted electron microscopy to a meter-length tape produced by SuperPower, Inc. This non-destructive, multifaceted characterization approach has allowed us to develop a seamless methodology for the interrogation of coated-conductor tapes during the course of sequential high-temperature treatments. The aim of this research effort is to identify performance-limiting defects, clarify their origin/cause, and prescribe methods to eliminate them during coated conductor manufacturing. (c) 2005 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Argonne, IL 60439 USA. SuperPower Inc, Schenectady, NY 12304 USA. RP Argonne Natl Lab, 9700 S Cass Ave,Bldg 212,Room G242A, Argonne, IL 60439 USA. EM balu@anl.gov RI Hiller, Jon/A-2513-2009; OI Hiller, Jon/0000-0001-7207-8008; Trasobares Llorente, Susana/0000-0003-3820-4327 NR 8 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 EI 1873-2143 J9 PHYSICA C JI Physica C PD OCT 1 PY 2005 VL 426 BP 1062 EP 1067 PN 2 PG 6 WC Physics, Applied SC Physics GA 975XZ UT WOS:000232698700036 ER PT J AU Goyal, A Rutter, N Cantoni, C Lee, DF AF Goyal, A Rutter, N Cantoni, C Lee, DF TI Long-range current flow and percolation in RABiTS-type conductors and the relative importance of out-of-plane and in-plane misorientations in determining J(c) SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article; Proceedings Paper CT 17th International Symposium on Superconductivity CY NOV 23-25, 2004 CL Niigata, JAPAN DE coated conductors; grain boundaries; percolation; flux-pinning ID CRITICAL-CURRENT DENSITY; SUPERCONDUCTING TAPES; COATED CONDUCTORS AB Calculations of long-range current flow using an advanced percolation model show that with the presently observed texture in RABiTS substrates, the dependence of J(c) on length as a function of width is greatly reduced. Furthermore, this dependence becomes almost negligible in applied fields. These results suggest that sub-division of a wide conductor into narrow filaments should be possible without loss in J(c). The relative importance of the out-of-plane texture in affecting intergranular J(c) was also explored by fabricating RABiTS substrates with different out-of-plane textures but approximately the same in-plane texture. This was accomplished by using TiN as a seed layer for which significant sharpening of the out-of-plane texture is observed. Similar J(c) was found for samples with differing out-of-plane texture but almost the same in-plane texture. Finally, separation of the total misorientation in GB networks into in-plane and out-of-plane misorientations using manipulations in Rodrigues space shows that J(c) correlates best with in-plane texture. (c) 2005 Elsevier B.V. All rights reserved. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Cambridge, Cambridge CB2 3QZ, England. RP Goyal, A (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM goyala@ornl.gov RI Cantoni, Claudia/G-3031-2013 OI Cantoni, Claudia/0000-0002-9731-2021 NR 15 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD OCT 1 PY 2005 VL 426 BP 1083 EP 1090 DI 10.1016/j.physc.2005.03.084 PN 2 PG 8 WC Physics, Applied SC Physics GA 975XZ UT WOS:000232698700040 ER PT J AU Aharony, A Entin-Wohlman, O Imry, Y AF Aharony, A Entin-Wohlman, O Imry, Y TI Phase measurements in open and closed Aharonov-Bohm interferometers SO PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES LA English DT Article; Proceedings Paper CT International Conference on Frontiers of Quantum and Mesoscopic Thermodynamics (FQMT04) CY JUL 26-29, 2004 CL Prague, CZECH REPUBLIC DE interference in nanostructures; Aharonov-Bohm interferometer; quantum dots; Kondo effect ID QUANTUM-DOT AB Mesoscopic Aharonov-Bohm interferometers have been used in attempts to measure the transmission phase of a quantum dot which is placed on one arm of the interferometer. Here we review theoretical results for the conductance through such interferometers, for both the closed (two-terminal) and open (multi-terminal) cases. In addition to earlier results for the Coulomb blockade regime, we present new results for the strongly correlated Kondo regime, and test the consistency of the two-slit analysis of some data from open interferorneter experiments. (c) 2005 Elsevier B.V. All rights reserved. C1 Tel Aviv Univ, Sackler Fac Exact Sci, Sch Phys & Astron, IL-69978 Tel Aviv, Israel. Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel. Argonne Natl Lab, Argonne, IL 60439 USA. Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel. RP Aharony, A (reprint author), Tel Aviv Univ, Sackler Fac Exact Sci, Sch Phys & Astron, IL-69978 Tel Aviv, Israel. EM aharony@post.tau.ac.il RI ENTIN, ORA/F-1114-2012 NR 21 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1386-9477 EI 1873-1759 J9 PHYSICA E JI Physica E PD OCT PY 2005 VL 29 IS 1-2 BP 283 EP 288 DI 10.1016/j.physe.2005.05.025 PG 6 WC Nanoscience & Nanotechnology; Physics, Condensed Matter SC Science & Technology - Other Topics; Physics GA 978GQ UT WOS:000232862000031 ER PT J AU Cote, R Onofrio, R Timmermans, E AF Cote, R Onofrio, R Timmermans, E TI Sympathetic cooling route to Bose-Einstein condensate and Fermi-liquid mixtures SO PHYSICAL REVIEW A LA English DT Article ID ATOMS; GASES AB We discuss a sympathetic cooling strategy that can successfully mitigate fermion-hole heating in a dilute atomic Fermi-Bose mixture and access the temperature regime in which the fermions behave as a Fermi liquid. We introduce an energy-based formalism to describe the temperature dynamics with which we study a specific and promising mixture, composed of Li-6 and Rb-87. Analyzing the harmonically trapped mixture, we find that the favorable features of this mixture are further enhanced by using different trapping frequencies for the two species. C1 Univ Connecticut, Dept Phys, Storrs, CT 06269 USA. Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA. Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy. INFM, Ctr Stat Mech & Complex, Unita Roma 1, I-00185 Rome, Italy. Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87545 USA. RP Cote, R (reprint author), Univ Connecticut, Dept Phys, Storrs, CT 06269 USA. NR 30 TC 6 Z9 6 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 EI 1094-1622 J9 PHYS REV A JI Phys. Rev. A PD OCT PY 2005 VL 72 IS 4 AR 041605 DI 10.1103/PhysRevA.72.041605 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800016 ER PT J AU Friar, JL Sick, I AF Friar, JL Sick, I TI Muonic hydrogen and the third Zemach moment SO PHYSICAL REVIEW A LA English DT Article ID LAMB SHIFT; HYPERFINE-STRUCTURE; NUCLEAR SIZE; RMS-RADIUS; ATOMS; PROTON AB We determine the third Zemach moment of hydrogen (< r(3)>((2))) using only the world data on elastic electron-proton scattering. This moment dominates the O(Z alpha)(5) hadronic correction to the Lamb shift in muonic atoms. The resulting moment, < r(3)>((2))=2.71(13) fm(3), is larger than some previously inferred values based on simple models. The contribution of that moment to the muonic hydrogen 2S level is -0.0247(12) meV. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Basel, Dept Phys & Astron, Basel, Switzerland. RP Friar, JL (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. NR 22 TC 0 Z9 0 U1 0 U2 1 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 040502 DI 10.1103/PhysRevA.72.040502 PG 3 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800006 ER PT J AU Kalnins, JG Amini, JM Gould, H AF Kalnins, JG Amini, JM Gould, H TI Focusing a fountain of neutral cesium atoms with an electrostatic lens triplet SO PHYSICAL REVIEW A LA English DT Article ID FREQUENCY STANDARD; MOLECULAR-BEAM; GRADIENT; SHIFT AB An electrostatic lens with three focusing elements in an alternating-gradient configuration is used to focus a fountain of cesium atoms in their ground (strong-field-seeking) state. The lens electrodes are shaped to produce only sextupole plus dipole equipotentials which avoids adding the unnecessary nonlinear forces present in cylindrical lenses. Defocusing between lenses is greatly reduced by having all of the main electric fields point in the same direction and be of nearly equal magnitude. The addition of the third lens gave us better control of the focusing strength in the two transverse planes and allowed focusing of the beam to half the image size in both planes. The beam envelope was calculated for lens voltages selected to produced specific focusing properties. The calculations, starting from first principles, were compared with measured beam sizes and found to be in good agreement. Application to fountain experiments, atomic clocks, and focusing polar molecules in strong-field-seeking states is discussed. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Kalnins, JG (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM jgkalnins@lbl.gov; jamaddi@lbl.gov; hagould@lbl.gov NR 18 TC 12 Z9 12 U1 0 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 OCT PY 2005 VL 72 IS 4 AR 043406 DI 10.1103/PhysRevA.72.043406 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800108 ER PT J AU Lim, SH Caster, AG Leone, SR AF Lim, SH Caster, AG Leone, SR TI Single-pulse phase-control interferometric coherent anti-Stokes Raman scattering spectroscopy SO PHYSICAL REVIEW A LA English DT Article ID SPECTRAL INTERFEROMETRY; CARS MICROSCOPY; MULTIPLEX CARS AB In coherent anti-Stokes Raman scattering (CARS) spectroscopy experiments, usually the amplitude of the signal is measured and the phase information is lost. With a polarization- and phase-controlled pulse shaping technique, the relative phase between the resonant and nonresonant CARS signals is controlled, and spectral interferometry is performed without an interferometer. Both the real and imaginary parts of the background-free resonant CARS spectrum are measured via spectral interferometry between the resonant and nonresonant signals from the same sample. The resonant signal is amplified significantly by homodyne mixing with the nonresonant signal as a local oscillator, greatly improving the detection limit. C1 Univ Calif Berkeley, Dept Chem & Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Lim, SH (reprint author), Univ Calif Berkeley, Dept Chem & Phys, Berkeley, CA 94720 USA. NR 17 TC 99 Z9 99 U1 1 U2 7 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 041803 DI 10.1103/PhysRevA.72.041803 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800019 ER PT J AU Ollivier, H Poulin, D Zurek, WH AF Ollivier, H Poulin, D Zurek, WH TI Environment as a witness: Selective proliferation of information and emergence of objectivity in a quantum Universe SO PHYSICAL REVIEW A LA English DT Article ID DECOHERENCE; MECHANICS; EINSELECTION; STATES AB We study the role of the information deposited in the environment of an open quantum system in the course of the decoherence process. Redundant spreading of information-the fact that some observables of the system can be independently read off from many distinct fragments of the environment-is investigated as the key to effective objectivity, the essential ingredient of classical reality. This focus on the environment as a communication channel through which observers learn about physical systems underscores the importance of quantum Darwinism-selective proliferation of information about "the fittest states" chosen by the dynamics of decoherence at the expense of their superpositions-as redundancy imposes the existence of preferred observables. We demonstrate that the only observables that can leave multiple imprints in the environment are the familiar pointer observables singled out by environment-induced superselection (einselection) for their predictability. Many independent observers monitoring the environment will therefore agree on properties of the system as they can only learn about preferred observables. In this operational sense, the selective spreading of information leads to appearance of an objective classical reality from within the quantum substrate. C1 Perimeter Inst, Waterloo, ON N2L 2Y5, Canada. INRIA, Projet Codes, F-78153 Le Chesnay, France. Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada. Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87545 USA. RP Ollivier, H (reprint author), Perimeter Inst, 31 Caroline St N, Waterloo, ON N2L 2Y5, Canada. RI Poulin, David/A-1481-2010 NR 48 TC 27 Z9 27 U1 1 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 EI 1094-1622 J9 PHYS REV A JI Phys. Rev. A PD OCT PY 2005 VL 72 IS 4 AR 042113 DI 10.1103/PhysRevA.72.042113 PG 19 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800034 ER PT J AU Ortiz, G Dukelsky, J AF Ortiz, G Dukelsky, J TI BCS-to-BEC crossover from the exact BCS solution SO PHYSICAL REVIEW A LA English DT Article ID BOSE-CONDENSATION; SUPERCONDUCTIVITY; MODELS AB The BCS-to-BEC crossover, as well as the nature of Cooper pairs, in superconducting and Fermi superfluid media is studied from the exact ground state wave function of the reduced BCS Hamiltonian. As the strength of the interaction increases, the ground state continuously evolves from a mixed system of quasifree fermions and pair resonances (BCS), to pair resonances and quasibound molecules (pseudogap), and finally to a system of quasibound molecules (BEC). A single unified scenario arises where the Cooper-pair wave function has a unique functional form. Several exact analytic expressions such as the binding energy and condensate fraction are derived. We compare our results with recent experiments in ultracold atomic Fermi gases. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. CSIC, Inst Estructura Mat, E-28006 Madrid, Spain. RP Ortiz, G (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. RI Dukelsky, Jorge/I-1118-2015 OI Dukelsky, Jorge/0000-0002-7715-5487 NR 26 TC 61 Z9 61 U1 1 U2 8 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 043611 DI 10.1103/PhysRevA.72.043611 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800124 ER PT J AU Papenbrock, T AF Papenbrock, T TI Density-functional theory for fermions in the unitary regime SO PHYSICAL REVIEW A LA English DT Article ID ATOMS; GAS; MOLECULES; SYSTEM; STATE AB In the unitary regime, fermions interact strongly via two-body potentials that exhibit a zero range and a (negative) infinite scattering length. The energy density is proportional to the energy density of the free Fermi gas with a proportionality constant xi. The author uses a simple density functional parametrized by an effective mass and the universal constant xi, and employs Kohn-Sham density-functional theory to obtain the parameters from fit to one exactly solvable two-body problem. This yields xi=0.42 and a rather large effective mass. The form of the density functional is checked by similar Kohn-Sham calculations for the exactly solvable Calogero model. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. OI Papenbrock, Thomas/0000-0001-8733-2849 NR 41 TC 44 Z9 44 U1 2 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 EI 1094-1622 J9 PHYS REV A JI Phys. Rev. A PD OCT PY 2005 VL 72 IS 4 AR 041603 DI 10.1103/PhysRevA.72.041603 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800014 ER PT J AU Pezze, L Collins, LA Smerzi, A Berman, GP Bishop, AR AF Pezze, L Collins, LA Smerzi, A Berman, GP Bishop, AR TI Sub-shot-noise phase sensitivity with a Bose-Einstein condensate Mach-Zehnder interferometer SO PHYSICAL REVIEW A LA English DT Article ID QUANTUM LIMIT; STATES; SU(2) AB Bose-Einstein condensates (BEC), with their coherence properties, have attracted wide interest for their possible application to ultraprecise interferometry and ultraweak force sensors. Since condensates, unlike photons, are interacting, they may permit the realization of specific quantum states needed as input of an interferometer to approach the Heisenberg limit, the supposed lower bound to precision phase measurements. To this end, we study the sensitivity to external weak perturbations of a representative matter-wave Mach-Zehnder interferometer whose input are two Bose-Einstein condensates created by splitting a single condensate in two parts. The interferometric phase sensitivity depends on the specific quantum state created with the two condensates, and, therefore, on the time scale of the splitting process. We identify three different regimes, characterized by a phase sensitivity Delta theta scaling with the total number of condensate particles N as (i) the standard quantum limit Delta theta similar to 1/N-1/2, (ii) the sub shot-noise Delta theta similar to 1/N-3/4, and the (iii) the Heisenberg limit Delta theta similar to 1/N. However, in a realistic dynamical BEC splitting, the 1/N limit requires a long adiabaticity time scale, which is hardly reachable experimentally. On the other hand, the sub-shot-noise sensitivity Delta theta similar to 1/N-3/4 can be reached in a realistic experimental setting. We also show that the 1/N-3/4 scaling is a rigorous upper bound in the limit N ->infinity, while keeping constant all different parameters of the bosonic Mach-Zehnder interferometer. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Trent, Ist Nazl Fis Mat, BEC CRS, I-38050 Trento, Italy. Univ Trent, Dipartimento Fis, I-38050 Trento, Italy. RP Pezze, L (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. RI PEZZE, LUCA/D-5967-2014 OI PEZZE, LUCA/0000-0003-0325-9555 NR 36 TC 34 Z9 34 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 EI 1094-1622 J9 PHYS REV A JI Phys. Rev. A PD OCT PY 2005 VL 72 IS 4 AR 043612 DI 10.1103/PhysRevA.72.043612 PG 8 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800125 ER PT J AU Staub, F Braud, M Balmer, JE Nilsen, J AF Staub, F Braud, M Balmer, JE Nilsen, J TI Absolute timing measurements of the Ni-like Pd and Sn soft-x-ray lasers SO PHYSICAL REVIEW A LA English DT Article ID NM; SATURATION AB The absolute time of emission of the x-ray laser output with respect to the arrival of a 100-ps pump pulse has been measured with the aid of a calibrated timing fiducial. The results show the x-ray laser to appear up to 60 ps (80 ps) before the peak of the pump pulse in the case of the Sn (Pd) x-ray laser, which is in good agreement with simulations obtained from the LASNEX and CRETIN codes. The pilse duration was found to be similar to 45 ps for both the Sn and the Pd x-ray lasers. C1 Inst Appl Phys, CH-3012 Bern, Switzerland. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Staub, F (reprint author), Inst Appl Phys, Sidlerstr 5, CH-3012 Bern, Switzerland. EM felix.staub@iap.unibe.ch NR 13 TC 5 Z9 5 U1 0 U2 2 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 043813 DI 10.1103/PhysRevA.72.043813 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800146 ER PT J AU Vrinceanu, D Hu, SX Mazevet, S Collins, LA AF Vrinceanu, D Hu, SX Mazevet, S Collins, LA TI Formation of antihydrogen atoms and ions in a strongly magnetized plasma: A molecular dynamics simulation SO PHYSICAL REVIEW A LA English DT Article AB Formation of antihydrogen atoms in a magnetized plasma of positrons and antiprotons is explicitly demonstrated in a molecular dynamics simulation. The parameters chosen are compatible with the experimental setup. We employ a special, adaptive time step symplectic integrator to perform full dynamics simulation, without using the guiding center approximation, for very long times (of the order of mu s). The large number of antihydrogen atoms formed allows detailed statistical analysis and distributions for the binding energy, pseudomomentum, sizes, and other quantities that characterize these atoms. We also find that a significantly smaller number of antihydrogen positive ions form during the free expansion of the plasma. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Vrinceanu, D (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. EM vrinceanu@lanl.gov RI Hu, Suxing/A-1265-2007 OI Hu, Suxing/0000-0003-2465-3818 NR 22 TC 6 Z9 6 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 EI 1094-1622 J9 PHYS REV A JI Phys. Rev. A PD OCT PY 2005 VL 72 IS 4 AR 042503 DI 10.1103/PhysRevA.72.042503 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 979HA UT WOS:000232931800076 ER PT J AU Ager, JW Walukiewicz, W Shan, W Yu, KM Li, SX Haller, EE Lu, H Schaff, WJ AF Ager, JW Walukiewicz, W Shan, W Yu, KM Li, SX Haller, EE Lu, H Schaff, WJ TI Multiphonon resonance raman scattering in InxGa1-xN SO PHYSICAL REVIEW B LA English DT Article ID FUNDAMENTAL-BAND GAP; P-TYPE GAAS; INN; SPECTRA; PHONON; SEMICONDUCTORS; SPECTROSCOPY; ABSORPTION; EPITAXY; LIGHT AB In InxGa1-xN epitaxial films with 0.37 < x < 1 and free electron concentrations in the 10(18) cm(-3) range, strong resonant Raman scattering of the A(1)(LO) phonon is observed for laser excitation above their direct band gaps. Examination of films with direct band gaps between 0.7 and 1.9 eV using laser energies from 1.9 to 2.7 eV shows that the resonance is broad, extending to up to 2 eV above the direct gap. Multiphonon Raman scattering with up to five LO phonons is also observed for excitation close to resonance in alloy samples; this is the highest number of phonon overtones ever observed for multiphonon scattering in a III-V compound under ambient conditions. Coupling of the electron plasmon to the LO phonon to form a longitudinal plasmon coupled mode of the type which is observed in the Raman spectra of n-GaN, appears not to occur in InxGa1-xN for x>0.37. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Cornell Univ, Dept Elect & Comp Engn, Ithaca, NY 14853 USA. RP Ager, JW (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Yu, Kin Man/J-1399-2012; OI Yu, Kin Man/0000-0003-1350-9642; Ager, Joel/0000-0001-9334-9751 NR 33 TC 16 Z9 16 U1 1 U2 7 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 OCT PY 2005 VL 72 IS 15 AR 155204 DI 10.1103/PhysRevB.72.155204 PG 7 WC Physics, Condensed Matter SC Physics GA 979IA UT WOS:000232934400065 ER PT J AU Antonangeli, D Krisch, M Fiquet, G Badro, J Farber, DL Bossak, A Merkel, S AF Antonangeli, D Krisch, M Fiquet, G Badro, J Farber, DL Bossak, A Merkel, S TI Aggregate and single-crystalline elasticity of hcp cobalt at high pressure SO PHYSICAL REVIEW B LA English DT Article ID EARTHS INNER-CORE; ANISOTROPY; IRON; GPA; TRANSITION AB The longitudinal acoustic phonon dispersion of polycrystalline cobalt was determined by inelastic x-ray scattering up to 99 GPa, throughout the entire stability field of the hcp phase. The obtained aggregate compressional and shear sound velocities are compared with recent single crystal results, impulsive stimulated light scattering and ambient pressure ultrasonic measurements, as well as first principle calculations. We observe a linear evolution of the sound velocities with density up to 75 GPa. In this pressure range, the aggregate elastic properties of the polycrystalline sample are reproduced within 3% by a Voigt-Reuss-Hill average of the single crystal C-ij. Above 75 GPa both aggregate velocities show a softening. Our comparative analysis of single-crystalline and polycrystalline results points towards a magnetic origin of the anomaly. C1 European Synchrotron Radiat Facil, F-38043 Grenoble, France. Lawrence Livermore Natl Lab, Energy & Environm Directorate, Div Earth Sci, Livermore, CA 94550 USA. Univ Paris 06, Inst Phys Globe Paris, CNRS, UMR 7590,Inst Mineral & Phys Milieux Condenses, F-75252 Paris, France. Univ Tokyo, Inst Solid State Phys, Chiba, Japan. RP Antonangeli, D (reprint author), European Synchrotron Radiat Facil, BP 220, F-38043 Grenoble, France. RI Merkel, Sebastien/E-5501-2011; Farber, Daniel/F-9237-2011; Fiquet, Guillaume/H-1219-2011; BOSAK, Alexei/J-7895-2013; Fiquet, Guillaume/M-6934-2014; Badro, James/A-6003-2011 OI Merkel, Sebastien/0000-0003-2767-581X; NR 32 TC 35 Z9 35 U1 1 U2 7 PU AMERICAN 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 OCT PY 2005 VL 72 IS 13 AR 134303 DI 10.1103/PhysRevB.72.134303 PG 7 WC Physics, Condensed Matter SC Physics GA 979HT UT WOS:000232933700049 ER PT J AU Antropov, V AF Antropov, V TI Magnetic short-range order above the Curie temperature of Fe and Ni SO PHYSICAL REVIEW B LA English DT Article ID LOCAL-BAND THEORY; SPIN DYNAMICS; ITINERANT FERROMAGNETISM; IRON; APPROXIMATION; NICKEL; TC; SUSCEPTIBILITY; EXCITATIONS; WAVES AB We report the results of time-dependent density-functional simulations of magnetic properties of Fe and Ni at finite temperatures. They reveal the existence of local moments in Ni above the Curie temperature, coupled to giant magnetic short-range order. In Fe the short-range order is also present to a lesser extent but spin-wave-like propagating and diffusive excitations persist in both materials in the paramagnetic state. The prevailing view of magnetic order in paramagnets should be reconsidered in light of these findings. C1 Ames Lab, Ames, IA 50011 USA. RP Antropov, V (reprint author), Ames Lab, Ames, IA 50011 USA. NR 29 TC 26 Z9 26 U1 0 U2 9 PU AMERICAN 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 OCT PY 2005 VL 72 IS 14 AR 140406 DI 10.1103/PhysRevB.72.140406 PG 4 WC Physics, Condensed Matter SC Physics GA 979HX UT WOS:000232934100010 ER PT J AU Bahrs, S Guimpel, J Goni, AR Maiorov, B Fainstein, A Nieva, G Thomsen, C AF Bahrs, S Guimpel, J Goni, AR Maiorov, B Fainstein, A Nieva, G Thomsen, C TI Persistent photo-excitation in GdBa2Cu3O6.5 in a simultaneous Raman and electrical-transport experiment SO PHYSICAL REVIEW B LA English DT Article ID OXYGEN-DEFICIENT YBA2CU3OX; SINGLE-CRYSTALS; THIN-FILMS; T-C; PHOTOCONDUCTIVITY; METASTABILITY; SCATTERING; ANISOTROPY; ORDER AB We investigate the connection between persistent illumination-induced effects in underdoped RBa2Cu3O7-delta known as persistent photoconductivity and Raman bleaching. Despite the long-standing assumption that the electrical and optical properties respond to the same light-induced change in the material, they have not been directly compared until now. We present a simultaneous experiment of Raman spectroscopy and electrical transport under visible illumination at low temperatures. The time dependence of the response in the two methods differs by two orders of magnitude, showing that the effects are connected but not identical. We discuss our results within the oxygen-vacancy reordering model of photobleaching and find that different Cu-O chain lengths affect the optical and the electrical response differently. Raman bleaching and persistent photoconductivity thus provide a different perspective on the microscopic oxygen vacancy distribution. C1 Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany. Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. Inst Ciencia Mat Barcelona, Bellaterra 08193, Spain. Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. RP Bahrs, S (reprint author), Tech Univ Berlin, Inst Festkorperphys, Hardenbergstr 36, D-10623 Berlin, Germany. RI Thomsen, Christian/E-2295-2012; Goni, Alejandro/M-2239-2014; Thomsen, Christian/B-5014-2015; OI Goni, Alejandro/0000-0002-1193-3063; Thomsen, Christian/0000-0001-6057-1401; Maiorov, Boris/0000-0003-1885-0436 NR 24 TC 6 Z9 6 U1 0 U2 0 PU AMERICAN 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 OCT PY 2005 VL 72 IS 14 AR 144501 DI 10.1103/PhysRevB.72.144501 PG 6 WC Physics, Condensed Matter SC Physics GA 979HX UT WOS:000232934100060 ER PT J AU Barnes, PW Avdeev, M Jorgensen, JD Hinks, DG Claus, H Short, S AF Barnes, PW Avdeev, M Jorgensen, JD Hinks, DG Claus, H Short, S TI Superconductivity and cobalt oxidation state in metastable NaxCoO2-delta center dot yH(2)O (x approximate to 1/3; y approximate to 4x) SO PHYSICAL REVIEW B LA English DT Article ID PHASE-DIAGRAM; NAXCOO2 AB We report the synthesis and superconducting properties of a metastable form of the known superconductor NaxCoO2 center dot yH(2)O (x approximate to 1/3;y approximate to 4x). We obtained this metastable cobaltate superconductor due to the unique way it was synthesized. Instead of using the conventional bromine-acetonitrile mixture for the Na+-deintercalation reaction, we use an aqueous bromine solution. Using this method, we oxidize the sample to a point that the sodium cobaltate becomes unstable, leading to formation of other products if not controlled. This compound has the same structure as the reported superconductor, yet it exhibits a systematic variation of the superconducting transition temperature (T-c) as a function of time. Immediately after synthesis, this compound is not a superconductor, even though it contains appropriate amounts of Na+ and H2O. The samples become superconducting with low T-c values after similar to 90 h. T-c continually increases until it reaches a maximum value (4.5 K) after about 260 h. Then T-c drops drastically, becoming nonsuperconducting approximately 100 h later. Corresponding time-dependent neutron powder diffraction data shows that the changes in superconductivity exhibited by the metastable cobaltate correspond to slow formation of oxygen vacancies in the CoO2 layers. In effect, the formation of these defects continually reduces the cobalt oxidation state causing the sample to evolve through its superconducting life cycle. Thus, the dome-shaped superconducting phase diagram is mapped as a function of cobalt oxidation state using a single sample. The width of this dome based on the formal oxidation state of cobalt is very narrow-approximately 0.1 valence units wide. Interestingly, the maximum T-c in NaxCoO2 center dot yH(2)O occurs when the cobalt oxidation state is near +3.5. Thus, we speculate that the maximum T-c occurs near the charge ordered insulating state that correlates with the average cobalt oxidation state of +3.5. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Barnes, PW (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM jjorgensen@anl.gov RI Avdeev, Maxim/A-5625-2008 OI Avdeev, Maxim/0000-0003-2366-5809 NR 22 TC 36 Z9 36 U1 0 U2 6 PU AMERICAN 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 OCT PY 2005 VL 72 IS 13 AR 134515 DI 10.1103/PhysRevB.72.134515 PG 8 WC Physics, Condensed Matter SC Physics GA 979HT UT WOS:000232933700094 ER PT J AU Benmore, CJ Hart, RT Mei, Q Price, DL Yarger, J Tulk, CA Klug, DD AF Benmore, CJ Hart, RT Mei, Q Price, DL Yarger, J Tulk, CA Klug, DD TI Intermediate range chemical ordering in amorphous and liquid water, Si, and Ge SO PHYSICAL REVIEW B LA English DT Article ID NEUTRON-DIFFRACTION; SUPERCOOLED WATER; GLASSY WATER; SILICON; ICE; TRANSITION; DEPENDENCE; SCATTERING; GERMANIUM; PHASE AB Neutron and x-ray diffraction data for low, high, and very high density amorphous ice and liquid water, silicon, and germanium have been compared in terms of the first sharp diffraction peak in the structure factor and at the radial distribution function level. The low and high density forms of H2O, Si, and Ge are shown to have very similar structures if the contributions from the hydrogen correlations in water are neglected. The very high density amorphous ice form is shown to be structurally analogous to recently reported high pressure liquid forms of Si and Ge, although there are slight differences in the way interstitial atoms or molecules are pushed into the first coordination shell. C1 Argonne Natl Lab, IPNS Div, Argonne, IL 60439 USA. Argonne Natl Lab, APS Div, Argonne, IL 60439 USA. Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA. Oak Ridge Natl Lab, HFIR Ctr Neutron Scattering, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Spallat Neutron Source Project, Oak Ridge, TN 37831 USA. Natl Res Council Canada, Ottawa, ON K0A 0R6, Canada. RP Benmore, CJ (reprint author), Argonne Natl Lab, IPNS Div, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Price, David Long/A-8468-2013; Yarger, Jeff/L-8748-2014; Tulk, Chris/R-6088-2016; OI Yarger, Jeff/0000-0002-7385-5400; Tulk, Chris/0000-0003-3400-3878; Benmore, Chris/0000-0001-7007-7749 NR 36 TC 25 Z9 26 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 OCT PY 2005 VL 72 IS 13 AR 132201 DI 10.1103/PhysRevB.72.132201 PG 4 WC Physics, Condensed Matter SC Physics GA 979HT UT WOS:000232933700004 ER PT J AU Bester, G Zunger, A AF Bester, G Zunger, A TI Electric field control and optical signature of entanglement in quantum dot molecules SO PHYSICAL REVIEW B LA English DT Article ID STATES; SPECTROSCOPY; COMPUTATION AB The degree of entanglement of an electron with a hole in a vertically coupled self-assembled dot molecule is shown to be tunable by an external electric field. Using atomistic pseudopotential calculations followed by a configuration interaction many-body treatment of correlations, we calculate the electronic states, degree of entanglement, and optical absorption. We offer a way to spectroscopically detect the magnitude of electric field needed to maximize the entanglement. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Bester, Gabriel/I-4414-2012; Zunger, Alex/A-6733-2013 OI Bester, Gabriel/0000-0003-2304-0817; NR 24 TC 27 Z9 27 U1 0 U2 5 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 OCT PY 2005 VL 72 IS 16 AR 165334 DI 10.1103/PhysRevB.72.165334 PG 7 WC Physics, Condensed Matter SC Physics GA 979IF UT WOS:000232934900083 ER PT J AU Blum, V Hart, GLW Walorski, MJ Zunger, A AF Blum, V Hart, GLW Walorski, MJ Zunger, A TI Using genetic algorithms to map first-principles results to model Hamiltonians: Application to the generalized Ising model for alloys SO PHYSICAL REVIEW B LA English DT Article ID SHORT-RANGE ORDER; EFFECTIVE CLUSTER INTERACTIONS; COMPOSITION PHASE-DIAGRAMS; MONTE-CARLO SIMULATIONS; TRANSITION-METAL ALLOYS; THERMODYNAMIC PROPERTIES; MULTICOMPONENT SYSTEMS; SEMICONDUCTOR ALLOYS; CROSS-VALIDATION; 1ST PRINCIPLES AB The cluster expansion method provides a standard framework to map first-principles generated energies for a few selected configurations of a binary alloy onto a finite set of pair and many-body interactions between the alloyed elements. These interactions describe the energetics of all possible configurations of the same alloy, which can hence be readily used to identify ground state structures and, through statistical mechanics solutions, find finite-temperature properties. In practice, the biggest challenge is to identify the types of interactions which are most important for a given alloy out of the many possibilities. We describe a genetic algorithm which automates this task. To avoid a possible trapping in a locally optimal interaction set, we periodically "lock out" persistent near-optimal cluster expansions. In this way, we identify not only the best possible combination of interaction types but also any near-optimal cluster expansions. Our strategy is not restricted to the cluster expansion method alone, and can be applied to select the qualitative parameter types of any other class of complex model Hamiltonians. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. No Arizona Univ, Dept Phys & Astron, Flagstaff, AZ 86011 USA. No Arizona Univ, Dept Comp Sci, Flagstaff, AZ 86011 USA. RP Max Planck Gesell, Fritz Haber Inst, Abt Theorie, Faradayweg 4-6, D-14195 Berlin, Germany. RI Zunger, Alex/A-6733-2013; Blum, Volker/J-6591-2012 OI Blum, Volker/0000-0001-8660-7230 NR 79 TC 73 Z9 73 U1 1 U2 21 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 OCT PY 2005 VL 72 IS 16 AR 165113 DI 10.1103/PhysRevB.72.165113 PG 13 WC Physics, Condensed Matter SC Physics GA 979IF UT WOS:000232934900040 ER PT J AU Bock, N Coffey, D Wallace, DC AF Bock, N Coffey, D Wallace, DC TI Nonadiabatic contributions to the free energy from the electron-phonon interaction in Na, K, Al, and Pb SO PHYSICAL REVIEW B LA English DT Article ID TEMPERATURE; METALS; HEAT AB We calculate the nonadiabatic contributions to the free energy of metals due to the electron-phonon interaction at intermediate temperatures, 0 <= k(B)T 2 Delta. The dirty limit may also be defined operationally as the regime where rho(s) varies with 1/tau. It is shown that the scaling relation N-c or rho(s)proportional to sigma T-dc(c), which follows directly from the Ferell-Glover-Tinkham sum rule, is the hallmark of a BCS system in the dirty-limit. While the gap in the copper-oxide superconductors is considered to be d wave with nodes and a gap maximum Delta(0), if 1/tau>2 Delta(0) then the dirty-limit case is preserved. The scaling relation implies that the copper-oxide superconductors are likely to be in the dirty limit and, as a result, that the energy scale associated with the formation of the condensate scales linearly with T-c. The a-b planes and the c axis also follow the same scaling relation. It is observed that the scaling behavior for the dirty limit and the Josephson effect (assuming a BCS formalism) are essentially identical, suggesting that in some regime these two pictures may be viewed as equivalent. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. EM homes@bnl.gov NR 69 TC 42 Z9 42 U1 0 U2 3 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 OCT PY 2005 VL 72 IS 13 AR 134517 DI 10.1103/PhysRevB.72.134517 PG 8 WC Physics, Condensed Matter SC Physics GA 979HT UT WOS:000232933700096 ER PT J AU Huber, R Kaindl, RA Schmid, BA Chemla, DS AF Huber, R Kaindl, RA Schmid, BA Chemla, DS TI Broadband terahertz study of excitonic resonances in the high-density regime in GaAs/AlxGa1-xAs quantum wells SO PHYSICAL REVIEW B LA English DT Article ID SEMICONDUCTORS; EXCITATION; ABSORPTION; DYNAMICS; CARRIERS; SPECTRA; GAS AB We report the first terahertz study of the intraexcitonic 1s-2p transition at high excitation densities in GaAs/AlxGa1-xAs quantum wells. A strong shift, broadening, and ultimately the disappearance of this resonance occurs with increasing density, after ultrafast photoexcitation at the near-infrared exciton line. Densities of excitons and unbound electron-hole pairs are followed quantitatively using a model of the composite terahertz dielectric response. Comparison with near-infrared absorption changes reveals a significantly enhanced energy shift and broadening of the intraexcitonic resonance. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 25 TC 52 Z9 53 U1 0 U2 12 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 OCT PY 2005 VL 72 IS 16 AR 161314 DI 10.1103/PhysRevB.72.161314 PG 4 WC Physics, Condensed Matter SC Physics GA 979IF UT WOS:000232934900018 ER PT J AU Im, MY Kim, DH Shin, SC AF Im, MY Kim, DH Shin, SC TI Transition from symmetric to asymmetric local coercivity distribution in CoCrPt alloy films SO PHYSICAL REVIEW B LA English DT Article ID MAGNETIC RECORDING MEDIA; THIN-FILMS; CO; REVERSAL; ANISOTROPY; TA AB The local coercivity distribution of CoCrPt alloy films prepared by dc magnetron sputtering has been investigated by means of magneto-optical microscope magnetometer, capable of simultaneously measuring the local magnetic properties on a submicrometer spatial resolution. We find that with increasing Pt concentration the local coercivity distribution becomes asymmetric and the average local coercivity as well as the width of the distribution increases. Transmission electron microscopy studies, together with a theoretical explanation, reveal that the results are closely correlated with the grain size distribution dependent on the Pt concentration. C1 Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea. Korea Adv Inst Sci & Technol, Ctr Nanospin Spintron Mat, Taejon 305701, South Korea. Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. RP Im, MY (reprint author), Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea. RI Shin, Sung-Chul/C-1992-2011; Kim, Dong-Hyun/F-7195-2012 NR 21 TC 4 Z9 4 U1 0 U2 1 PU AMERICAN 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 OCT PY 2005 VL 72 IS 13 AR 132416 DI 10.1103/PhysRevB.72.132416 PG 4 WC Physics, Condensed Matter SC Physics GA 979HT UT WOS:000232933700023 ER PT J AU Jaffe, JE Bachorz, RA Gutowski, M AF Jaffe, JE Bachorz, RA Gutowski, M TI Low-temperature polymorphs of ZrO2 and HfO2: A density-functional theory study SO PHYSICAL REVIEW B LA English DT Article ID INITIO MOLECULAR-DYNAMICS; ALTERNATIVE GATE DIELECTRICS; TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; HIGH-PRESSURE; PHASE-TRANSFORMATIONS; RAMAN-SPECTROSCOPY; HARTREE-FOCK; ELECTRON-GAS; 50 GPA AB The total energy and equation of state of the monoclinic, tetragonal, cubic, orthorhombic-I (Pbca) and orthorhombic-II (cotunnite) phases of zirconia and hafnia are determined using density functional theory (DFT) in the local density (LDA) and generalized-gradient (GGA) approximations. It is found that GGA corrections are needed to obtain low-temperature phase transitions under pressure that are consistent with experiment, i.e., (monoclinic -> orthorhombic-I -> cotunnite). The GGA values of the bulk modulus of the cotunnite phase are found to be 251 and 259 GPa for ZrO2 and HfO2 respectively, highlighting the similarity of these two compounds. We introduce a population analysis scheme in which atomic radii are adapted to the actual charge distribution in the material. The results indicate that the effective atomic radius of Hf is smaller than that of Zr, a drastic manifestation of the relativistic lanthanide contraction. The population analysis demonstrates that ionicity: (i) decreases from the monoclinic to the cotunnite phase, and (ii) is larger for HfO2 than for ZrO2. The bandgap and heat of formation are also larger for monoclinic HfO2 than for ZrO2 by 0.60 eV and 0.60 eV/ formula unit, respectively. The tetragonal phase, which often exists as a metastable phase at ambient conditions, has a bandgap larger than the monoclinic phase by 0.35 and 0.65 eV for ZrO2 and HfO2, respectively. C1 Pacific NW Natl Lab, Fundamental Sci Directorate, Div Chem Sci, Richland, WA 99352 USA. Univ Gdansk, Dept Chem, PL-80952 Gdansk, Poland. RP Jaffe, JE (reprint author), Pacific NW Natl Lab, Fundamental Sci Directorate, Div Chem Sci, POB 999, Richland, WA 99352 USA. EM maciej.gutowski@pnl.gov NR 45 TC 105 Z9 109 U1 2 U2 70 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 OCT PY 2005 VL 72 IS 14 AR 144107 DI 10.1103/PhysRevB.72.144107 PG 9 WC Physics, Condensed Matter SC Physics GA 979HX UT WOS:000232934100024 ER PT J AU Lambrecht, WRL Alldredge, E Kim, K AF Lambrecht, WRL Alldredge, E Kim, K TI Structure and phonons of ZnGeN2 SO PHYSICAL REVIEW B LA English DT Article ID TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; LATTICE-DYNAMICS; INITIO; SEMICONDUCTORS; DISPERSIONS; SYSTEMS; GAN AB First-principles calculations of the structural relaxation and the phonons at Gamma are presented for ZnGeN2 and compared with those in GaN in terms of Brillouin zone folding effects. Excellent agreement is obtained between various computational methods and experimental data for the structure. Good agreement is obtained with the published experimental Raman spectrum, which shows a superposition of various modes due to limited resolution and significant effects due to second harmonic modes. The Zn-N and Ge-N bond relaxations are found to strongly influence the phonon spectrum at Gamma by widening the range of optical modes. C1 Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Lambrecht, WRL (reprint author), Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA. RI Lambrecht, Walter/O-1083-2016 NR 25 TC 21 Z9 21 U1 1 U2 14 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 OCT PY 2005 VL 72 IS 15 AR 155202 DI 10.1103/PhysRevB.72.155202 PG 6 WC Physics, Condensed Matter SC Physics GA 979IA UT WOS:000232934400063 ER PT J AU Liu, CS Hou, CJ Kioussis, N Demos, SG Radousky, HB AF Liu, CS Hou, CJ Kioussis, N Demos, SG Radousky, HB TI Electronic structure calculations of an oxygen vacancy in KH2PO4 SO PHYSICAL REVIEW B LA English DT Article ID POTASSIUM DIHYDROGEN PHOSPHATE; TOTAL-ENERGY CALCULATIONS; GAMMA-IRRADIATED KH2PO4; SPIN-RESONANCE; KD2PO4; CRYSTALS; IDENTIFICATION; DEFECTS AB We present first-principles total-energy density-functional theory electronic structure calculations for the neutral and charge states of an oxygen vacancy in KH2PO4 (KDP). Even though the overall density of states profiles for the defective KDP are quite similar to those of the perfect KDP, the oxygen vacancy in the neutral and +1 charge states induces defect states in the band gap. For the neutral oxygen vacancy, one electron is localized in the O vacancy maintaining the charge that was at that site in the pure crystal, while the neighboring P atom to the vacancy gains about one electron relative to its charge state in pure KDP. For the +1 charge oxygen vacancy, the removal of an electron reduces the occupation of the filled gap states in the neutral case from two to one electron and produces a new empty state in the gap. The new empty gap state is very close to the highest occupied states, leading to a dramatic decrease of the band gap. In sharp contrast, no defect states appear in the energy gap for the +2 charge O vacancy, where the neighboring P atom to the O vacancy almost returns to its perfect-crystal charge state. For the -1 charge oxygen vacancy, the added electron does not localize on any of the atoms near the vacancy; rather it goes into the vacancy to spin-pair with the electron that was there in the neutral vacancy. C1 Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China. Calif State Univ Northridge, Dept Phys, Northridge, CA 91330 USA. Lawrence Livermore Natl Lab, Livermore, CA USA. RP Liu, CS (reprint author), Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, POB 1129, Hefei 230031, Peoples R China. RI Liu, Changsong/I-4255-2013 NR 29 TC 23 Z9 24 U1 5 U2 30 PU AMERICAN 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 OCT PY 2005 VL 72 IS 13 AR 134110 DI 10.1103/PhysRevB.72.134110 PG 6 WC Physics, Condensed Matter SC Physics GA 979HT UT WOS:000232933700039 ER PT J AU Liu, HJ Mun, BS Thornton, G Isaacs, SR Shon, YS Ogletree, DF Salmeron, M AF Liu, HJ Mun, BS Thornton, G Isaacs, SR Shon, YS Ogletree, DF Salmeron, M TI Electronic structure of ensembles of gold nanoparticles: Size and proximity effects SO PHYSICAL REVIEW B LA English DT Article ID METAL-INSULATOR-TRANSITION; CLUSTERS; SPECTROSCOPY; MONOLAYERS; PARTICLES; MOLECULES; BEHAVIOR; SOLIDS AB The valence-band electronic structure of alkanethiol stabilized gold nanoparticles (NPs) with different core sizes has been studied using x-ray photoemission spectroscopy. A reduction of density of state near the Fermi level is observed for small particles (< 3 nm diam) that are separated by more than 1 nm. A significant cross-coupling between the particles is found when their separation is decreased below 1 nm that restores the density of states at the Fermi edge. The observations are interpreted as a result of changes in the screening of Coulomb blockade effects in the NP system due to tunneling between particles at the shorter separations. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. UCL, London Ctr Nanotechnol, London WC1H 0AJ, England. UCL, Dept Chem, London WC1H 0AJ, England. Western Kentucky Univ, Dept Chem, Bowling Green, KY 42101 USA. RP Liu, HJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. EM mbsalmeron@lbl.gov RI Mun, Bongjin /G-1701-2013 NR 29 TC 16 Z9 16 U1 1 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 OCT PY 2005 VL 72 IS 15 AR 155430 DI 10.1103/PhysRevB.72.155430 PG 5 WC Physics, Condensed Matter SC Physics GA 979IA UT WOS:000232934400136 ER PT J AU Mans, A Dil, JH Ettema, ARHF Weitering, HH AF Mans, A Dil, JH Ettema, ARHF Weitering, HH TI Surface relaxations in quantum-confined Pb SO PHYSICAL REVIEW B LA English DT Article ID BY-LAYER GROWTH; ELECTRON-DENSITY; METAL-FILMS; LEAD FILMS; SIZE; SI(111); CRYSTALLINE; THICKNESS; ISLANDS; GE(001) AB The relationship between electronic and atomic structure of quantum confined objects is a key issue in nanoscience. We performed low-energy electron diffraction to determine the surface relaxations of ultrathin Pb films on Si(111)7x7 with thicknesses ranging from four to nine atomic layers. The results indicate a contraction of the first interlayer spacing d(12) for all films. The d(12) contraction exhibits a small bilayer modulation as a function of thickness, indicative of a quantum size effect. The oscillatory relaxations furthermore suggest an interesting correlation with the work function oscillations predicted from density functional theory [Wei and Chou, Phys. Rev. B 66, 233408 (2002)] and can be understood qualitatively on the basis of the jellium model. C1 Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA. RP Mans, A (reprint author), Univ Amsterdam, Van der Waals Zeeman Inst, Valckenierstr 65, NL-1018 XE Amsterdam, Netherlands. RI Dil, Hugo/F-6995-2012 OI Dil, Hugo/0000-0002-6016-6120 NR 46 TC 16 Z9 16 U1 2 U2 10 PU AMERICAN 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 OCT PY 2005 VL 72 IS 15 AR 155442 DI 10.1103/PhysRevB.72.155442 PG 10 WC Physics, Condensed Matter SC Physics GA 979IA UT WOS:000232934400148 ER PT J AU Meyer, B Borsa, F Martin, DM Martin, SW AF Meyer, B Borsa, F Martin, DM Martin, SW TI NMR spin-lattice relaxation and ionic conductivity in lithium thioborogermanate fast-ion-conducting glasses SO PHYSICAL REVIEW B LA English DT Article ID NON-ARRHENIUS CONDUCTIVITY; B-11 NMR; ELECTRICAL RELAXATION; SUPERIONIC GLASSES; TRAPPING MODEL; MOBILE IONS; LI-7; ELECTROLYTES; CRYSTALLINE; TRANSPORT AB Li-7 nuclear spin-lattice relaxation (NSLR) and ionic conductivity measurements of LiI-doped Li2S+GeS2+B2S3 glasses were performed to investigate the ion hopping dynamics and the non-Arrhenius conductivity behavior that has also been observed in some silver fast-ion-conducting (FIC) glasses. The NMR NSLR experiments were performed at 4 and 8 MHz and at 70 kHz in the rotating frame over a temperature range of 183-523 K. Conductivity measurements on these glasses were performed over the same temperature range to determine if the commonly observed non-Arrhenius ionic conductivity in silver FIC glasses was also observed in lithium FIC glasses. Our previously developed distribution of activation energies (DAE) model was used to fit both the NSLR and conductivity results. It was found that a bimodel DAE was required to fit the broad NSLR maximum. One DAE was associated with lithium ions residing in anion sites created by tetrahedral boron units in the thioborate structural regions of the glass, and the other was associated with lithium ions residing in the anion sites created by the nonbridging sulfur units in the thiogermanate regions of the glass. The average activation energy for the lithium ions residing in the thioborate and thiogermanate sites in the ternary glasses agreed very well with the average activation energies for lithium ions in pure binary thioborate and thiogermanate glasses, respectively, with the thiogermanate energies being significantly larger (similar to 45 vs similar to 30 kJ/mol, respectively) than those for the thioborate sites. This trend is in agreement with the fact that the thiogermanate structures possess nonbridging sulfur units whereas the thioborate structures do not. It was found that some of the non-Arrhenius conductivity behavior could be associated with the bimodal DAE and the conductivity could be fit for the most part with the DAE model. However, the strong deviation from Arrhenius behavior at high temperature could not be accounted for and an extension of the DAE model was therefore included. We consider the effect of a small fraction of mobile ions which are thermally excited above the barriers and are assumed to conduct around many (temperature-dependent) filled sites before reaching a second unoccupied site. This ion-trapping model explains well the high-temperature deviation of the conductivity from Arrhenius behavior. C1 Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy. Univ Pavia, Unita INFM Pavia, I-27100 Pavia, Italy. RP Martin, SW (reprint author), CUNY Hunter Coll, Dept Phys, New York, NY 10021 USA. NR 48 TC 10 Z9 10 U1 0 U2 12 PU AMERICAN 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 OCT PY 2005 VL 72 IS 14 AR 144301 DI 10.1103/PhysRevB.72.144301 PG 13 WC Physics, Condensed Matter SC Physics GA 979HX UT WOS:000232934100029 ER PT J AU Olovsson, W Holmstrom, E Wills, J James, P Abrikosov, IA Niklasson, AMN AF Olovsson, W Holmstrom, E Wills, J James, P Abrikosov, IA Niklasson, AMN TI Relationship between the electronic structure of embedded single to triple atomic monolayers and bulk alloys SO PHYSICAL REVIEW B LA English DT Article ID CORE-LEVEL SHIFTS; QUANTUM-WELL STATES; GREEN-FUNCTION TECHNIQUE; POLARIZED X-RAYS; SURFACE SEGREGATION; MAGNETIC DICHROISM; THIN-FILMS; FE; NI; ENERGY AB The relation between the electronic structure of thin film nanosandwiches and bulk alloys has been investigated by means of first-principles electronic structure theory. The spin magnetization, layered projected spectral properties, and interface core-level shifts of Cu, Ni, Co, and Fe systems have been calculated. In order to compare thin films to bulk alloys, systems with equal average nearest-neighbor coordination have been compared. We find that the spin magnetization and interface core level shifts are closely related to bulk with the exception of the core level shifts in the Fe/Cu multilayers, which are more sensitive to the specific structure of the thin film geometry. The discrepancy is discussed in terms of interacting interface states in the Cu spacer. The experimental possibility of detecting embedded monolayers is also investigated. C1 Uppsala Univ, Dept Phys, Condensed Matter Theory Grp, SE-75121 Uppsala, Sweden. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. SKF Grp Mfg Dev Ctr MDC, SE-41550 Gothenburg, Sweden. Linkoping Univ, Dept Phys & Measurement Technol, SE-58183 Linkoping, Sweden. RP Olovsson, W (reprint author), Uppsala Univ, Dept Phys, Condensed Matter Theory Grp, SE-75121 Uppsala, Sweden. RI Holmstrom, Erik/A-5308-2009; OI Holmstrom, Erik/0000-0002-1198-3861; Olovsson, Weine/0000-0002-2904-0108 NR 52 TC 7 Z9 7 U1 0 U2 2 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 OCT PY 2005 VL 72 IS 15 AR 155419 DI 10.1103/PhysRevB.72.155419 PG 7 WC Physics, Condensed Matter SC Physics GA 979IA UT WOS:000232934400125 ER PT J AU Rousochatzakis, I Luban, M AF Rousochatzakis, I Luban, M TI Master equations for pulsed magnetic fields: Application to magnetic molecules SO PHYSICAL REVIEW B LA English DT Article ID BUTTERFLY HYSTERESIS; RELAXATION; ANISOTROPY; CRYSTAL; CLUSTER AB We extend spin-lattice relaxation theory to incorporate the use of pulsed magnetic fields for probing the hysteresis effects and magnetization steps and plateaus exhibited, at low temperatures, by the dynamical magnetization of magnetic molecules. The main assumption made is that the lattice degrees of freedom equilibrate in times much shorter than both the experimental time scale (determined by the sweep rate) and the typical spin-lattice relaxation time. We first consider the isotropic case (a magnetic molecule with a ground state of spin S well separated from the excited levels and also the general isotropic Heisenberg-Hamiltonian where all energy levels are relevant) and then we include small off-diagonal terms in the spin Hamiltonian to take into account the Landau-Zener-Stuckelberg (LZS) effect. In the first case, and for an S=1/2 magnetic molecule we arrive at the generalized Bloch equation recently used for the magnetic molecule {V-6} in [Phys. Rev. Lett. 94, 147204 (2005)]. An analogous equation is derived for the magnetization, at low temperatures, of antiferromagnetic ring systems. The LZS effect is discussed for magnetic molecules with a low spin ground state, for which we arrive at a very convenient set of equations that take into account the combined effects of LZS and thermal transitions. In particular, these equations explain the deviation from exact magnetization reversal at B approximate to 0 observed in {V-6}. They also account for the small magnetization plateaus ("magnetic Foehn effect"), following the LZS steps that have been observed in several magnetic molecules. Finally, we discuss the role of the phonon bottleneck effect at low temperatures and specifically we indicate how this can give rise to a pronounced Foehn effect. C1 Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Rousochatzakis, I (reprint author), Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. EM rusohatz@ameslab.gov; luban@ameslab.gov RI Rousochatzakis, Ioannis/A-5787-2009 OI Rousochatzakis, Ioannis/0000-0002-5517-8389 NR 38 TC 15 Z9 15 U1 0 U2 2 PU AMERICAN 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 OCT PY 2005 VL 72 IS 13 AR 134424 DI 10.1103/PhysRevB.72.134424 PG 11 WC Physics, Condensed Matter SC Physics GA 979HT UT WOS:000232933700074 ER PT J AU Rudd, RE Broughton, JQ AF Rudd, RE Broughton, JQ TI Coarse-grained molecular dynamics: Nonlinear finite elements and finite temperature SO PHYSICAL REVIEW B LA English DT Article ID QUASI-CONTINUUM METHOD; LENGTH SCALES; ATOMISTIC SIMULATION; TRANSITION-METALS; MODEL; COMPUTER; RESONATORS; ELASTICITY; CRYSTALS; EQUATION AB Coarse-grained molecular dynamics (CGMD) is a technique developed as a concurrent multiscale model that couples conventional molecular dynamics (MD) to a more coarse-grained description of the periphery. The coarse-grained regions are modeled on a mesh in a formulation that generalizes conventional finite element modeling (FEM) of continuum elasticity. CGMD is derived solely from the MD model, however, and has no continuum parameters. As a result, it provides a coupling that is smooth and provides control of errors that arise at the coupling between the atomistic and coarse-grained regions. In this paper, we elaborate on the formulation of CGMD, describing in detail how CGMD is applied to anharmonic solids and finite-temperature simulations. As tests of CGMD, we present in detail the calculation of the phonon spectra for solid argon and tantalum in three dimensions, demonstrating how CGMD provides a better description of the elastic waves than that provided by FEM. We also present elastic wave scattering calculations that show the elastic wave scattering is more benign in CGMD than FEM. We also discuss the dependence of scattering on the properties of the mesh. We introduce a rigid approximation to CGMD that eliminates internal relaxation, similar to the quasicontinuum technique, and compare it to the full CGMD. C1 Lawrence Livermore Natl Lab, Condensed Matter Phys Div, Livermore, CA 94551 USA. JPMorgan Chase Bank, New York, NY 10017 USA. USN, Res Lab, Washington, DC 20375 USA. RP Rudd, RE (reprint author), Lawrence Livermore Natl Lab, Condensed Matter Phys Div, L-045, Livermore, CA 94551 USA. EM robert.rudd@llnl.gov OI Rudd, Robert/0000-0002-6632-2681 NR 72 TC 96 Z9 101 U1 5 U2 30 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 OCT PY 2005 VL 72 IS 14 AR 144104 DI 10.1103/PhysRevB.72.144104 PG 32 WC Physics, Condensed Matter SC Physics GA 979HX UT WOS:000232934100021 ER PT J AU Scagnoli, V Staub, U Janousch, M Mulders, AM Shi, M Meijer, GI Rosenkranz, S Wilkins, SB Paolasini, L Karpinski, J Kazakov, SM Lovesey, SW AF Scagnoli, V Staub, U Janousch, M Mulders, AM Shi, M Meijer, GI Rosenkranz, S Wilkins, SB Paolasini, L Karpinski, J Kazakov, SM Lovesey, SW TI Charge disproportionation and search for orbital ordering in NdNiO3 by use of resonant x-ray diffraction SO PHYSICAL REVIEW B LA English DT Article ID METAL-INSULATOR-TRANSITION; NEUTRON-DIFFRACTION; PEROVSKITES; SCATTERING; LAMNO3; LA0.5SR1.5MNO4; MANGANITES; ABSORPTION; EARTH AB Detailed resonant x-ray diffraction experiments including azimuthal angle scans were performed on NdNiO3 around the Ni K absorption edge, allowing us to investigate the electronic changes associated with the metal-to-insulator transition. The influence on the observed reflections of charge disproportionation and the asphericity of the Ni electron density is evaluated. The asphericity, due to the distortion of the oxygen octahedra, persists also in the metallic phase, but its influence on the unrotated sigma-sigma (033) diffraction signal is found to be negligible, in contrast to the case for the superlattice reflections found in manganites and magnetite. We conclude that the sigma-sigma scattering intensity is consistent with charge disproportionation at the Ni site. No (1/2 0 1/2) type reflections were found, making unlikely the simultaneous occurrence of orbital order with this previously proposed wave vector. Moreover, the asphericity observed in the 4p shell in the metallic state indicates that there is no orbital degeneracy. Therefore, no orbital ordering is expected to occur at the metal-insulator transition. C1 Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland. IBM Corp, Zurich Res Lab, Res, CH-8803 Ruschlikon, Switzerland. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. European Commiss, Joint Res Ctr, Inst Transuranium Elements, D-76344 Eggenstein Leopoldshafen, Germany. European Synchrotron Radiat Facil, F-38043 Grenoble, France. ETH, Festkorperphys Lab, CH-8093 Zurich, Switzerland. Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England. Diamond Light Source Ltd, Didcot OX11 0QX, Oxon, England. RP Scagnoli, V (reprint author), Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland. EM valerio.scagnoli@psi.ch RI Janousch, Markus/B-3285-2010; Rosenkranz, Stephan/E-4672-2011; Mulders, Annemieke/B-4236-2013; scagnoli, valerio/C-6833-2008; Kazakov, Sergey/A-4139-2014; Staub, Urs/C-4914-2015 OI Rosenkranz, Stephan/0000-0002-5659-0383; scagnoli, valerio/0000-0002-8116-8870; Kazakov, Sergey/0000-0002-0553-7881; NR 39 TC 36 Z9 36 U1 1 U2 21 PU AMERICAN 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 OCT PY 2005 VL 72 IS 15 AR 155111 DI 10.1103/PhysRevB.72.155111 PG 7 WC Physics, Condensed Matter SC Physics GA 979IA UT WOS:000232934400050 ER PT J AU Schafer, J Hoinkis, M Rotenberg, E Blaha, P Claessen, R AF Schafer, J Hoinkis, M Rotenberg, E Blaha, P Claessen, R TI Fermi surface and electron correlation effects of ferromagnetic iron SO PHYSICAL REVIEW B LA English DT Article ID ENERGY-BANDS; TRANSITION-METALS; SELF-ENERGY; NI; FE; PHOTOEMISSION; FE(110); CO; STATE; SUPERCONDUCTIVITY AB The electronic band structure of bulk ferromagnetic iron is explored by angle-resolved photoemission for electron correlation effects. Fermi surface cross sections as well as band maps are contrasted with density functional calculations. The Fermi vectors and band parameters obtained from photoemission and their prediction from band theory are analyzed in detail. Generally good agreement is found for the Fermi surface. A bandwidth reduction for shallow bands of similar to 30% is observed. Additional strong quasiparticle renormalization effects are found near the Fermi level, leading to a considerable mass enhancement. The role of electronic correlation effects and the electronic coupling to magnetic excitations is discussed in view of the experimental results. C1 Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany. Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. Vienna Univ Technol, Inst Phys & Theoret Chem, A-1060 Vienna, Austria. Univ Wurzburg, D-97074 Wurzburg, Germany. RP Schafer, J (reprint author), Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany. RI Blaha, Peter/F-2847-2010; Rotenberg, Eli/B-3700-2009; Claessen, Ralph/A-2045-2017 OI Rotenberg, Eli/0000-0002-3979-8844; Claessen, Ralph/0000-0003-3682-6325 NR 47 TC 39 Z9 39 U1 2 U2 8 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 OCT PY 2005 VL 72 IS 15 AR 155115 DI 10.1103/PhysRevB.72.155115 PG 11 WC Physics, Condensed Matter SC Physics GA 979IA UT WOS:000232934400054 ER PT J AU Shan, L Huang, Y Gao, H Wang, Y Li, SL Dai, PC Zhou, F Xiong, JW Ti, WX Wen, HH AF Shan, L Huang, Y Gao, H Wang, Y Li, SL Dai, PC Zhou, F Xiong, JW Ti, WX Wen, HH TI Distinct pairing symmetries in Nd1.85Ce0.15CuO4-y and La1.89Sr0.11CuO4 single crystals: Evidence from comparative tunneling measurements SO PHYSICAL REVIEW B LA English DT Article ID DOPED CUPRATE SUPERCONDUCTORS; D-WAVE SUPERCONDUCTORS; QUASI-PARTICLES; SPECTROSCOPY; SURFACE; PHOTOEMISSION; TRANSITION; STATES; GAP AB We used point-contact tunneling spectroscopy to study the superconducting pairing symmetry of electron-doped Nd1.85Ce0.15CuO4-y (NCCO) and hole-doped La1.89Sr0.11CuO4 (LSCO). Nearly identical spectra without zero bias conductance peak (ZBCP) were obtained on the (110) and (100) oriented surfaces (the so-called nodal and anti-nodal directions) of NCCO. In contrast, LSCO showed a remarkable ZBCP in the nodal direction as expected from a d-wave superconductor. Detailed analysis reveals an s-wave component in the pairing symmetry of the NCCO sample with Delta/k(B)T(c)=1.66, a value remarkably close to that of a weakly coupled Bardeen-Cooper-Schriffer (BCS) superconductor. We argue that this s-wave component is formed at the Fermi surface pockets centered at (+/-pi,0) and (0,+/-pi) although a d-wave component may also exist. C1 Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, Beijing 100080, Peoples R China. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Ctr Neutron Scattering, Oak Ridge, TN 37831 USA. RP Shan, L (reprint author), Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100080, Peoples R China. EM shanlei@ssc.iphy.ac.cn; hhwen@aphy.iphy.ac.cn RI Li, Shiliang/B-9379-2009; Wang, Yue/E-9002-2010; Dai, Pengcheng /C-9171-2012 OI Dai, Pengcheng /0000-0002-6088-3170 NR 46 TC 34 Z9 35 U1 0 U2 7 PU AMERICAN 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 OCT PY 2005 VL 72 IS 14 AR 144506 DI 10.1103/PhysRevB.72.144506 PG 9 WC Physics, Condensed Matter SC Physics GA 979HX UT WOS:000232934100065 ER PT J AU Shibata, N Painter, GS Satet, RL Hoffmann, MJ Pennycook, SJ Becher, PF AF Shibata, N Painter, GS Satet, RL Hoffmann, MJ Pennycook, SJ Becher, PF TI Rare-earth adsorption at intergranular interfaces in silicon nitride ceramics: Subnanometer observations and theory SO PHYSICAL REVIEW B LA English DT Article ID OXYNITRIDE GLASSES; ALUMINA ADDITIVES; GRAIN-BOUNDARIES; YTTRIA AB It is shown that the rare earths (REs) have different tendencies to segregate to the grain surfaces in silicon nitride ceramics, and this alters the filling of adsorption sites on the prismatic plane surfaces. Here, the adsorption and binding strengths of RE segregants at prismatic grain surfaces are determined by first-principles calculations. The adsorption of three rare earths (La, Gd, and Lu) is expected to be distinctly different at the predicted adsorption sites, and this is confirmed by atomic-resolution scanning transmission electron microscopy images. This combination of theory and experiment provides a basis for understanding the adsorption behavior of RE elements in silicon nitride ceramics. C1 Univ Tokyo, Inst Engn Innovat, Tokyo 1138656, Japan. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. Univ Karlsruhe, Inst Keram Maschinenbau, D-76131 Karlsruhe, Germany. Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA. RP Shibata, N (reprint author), Univ Tokyo, Inst Engn Innovat, Tokyo 1138656, Japan. RI Shibata, Naoya/E-5327-2013 NR 18 TC 23 Z9 23 U1 0 U2 9 PU AMERICAN 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 OCT PY 2005 VL 72 IS 14 AR 140101 DI 10.1103/PhysRevB.72.140101 PG 4 WC Physics, Condensed Matter SC Physics GA 979HX UT WOS:000232934100001 ER PT J AU Tsoi, S Rodriguez, S Ramdas, AK Ager, JW Riemann, H Haller, EE AF Tsoi, S Rodriguez, S Ramdas, AK Ager, JW Riemann, H Haller, EE TI Isotopic dependence of the E-0 ' and E-1 direct gaps in the electronic band structure of Si SO PHYSICAL REVIEW B LA English DT Article ID TEMPERATURE-DEPENDENCE; INTERBAND TRANSITIONS; SILICON; SEMICONDUCTORS; ELECTROREFLECTANCE; GE; MODULATION; SPECTRA AB The E-0(') direct transition of Si between its valence band maximum (Gamma(8)(+)) and conduction band minimum (Gamma(6)(-)) and the E-1 direct transition along < 111 > are studied in isotopically enriched Si-28, Si-29, and Si-30 employing photomodulated reflectivity. Their energies (E-G) at low temperature are found to increase with increasing isotopic mass (M) according to E-G(M)=E-G(infinity)-CM-1/2, as predicted in the theory for band gap renormalization by zero-point vibrations through electron-phonon interaction and volume changes associated with anharmonicity. Here E-G(infinity) is the energy gap of the "infinitely" massive isotope, free of renormalization effects. C1 Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. IKZ, Berlin, Germany. Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. RP Tsoi, S (reprint author), Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA. NR 30 TC 3 Z9 5 U1 0 U2 6 PU AMERICAN 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 OCT PY 2005 VL 72 IS 15 AR 153203 DI 10.1103/PhysRevB.72.153203 PG 4 WC Physics, Condensed Matter SC Physics GA 979IA UT WOS:000232934400008 ER PT J AU Yan, Y Al-Jassim, MM Wei, SH AF Yan, Y Al-Jassim, MM Wei, SH TI Oxygen-vacancy mediated adsorption and reactions of molecular oxygen on the ZnO(10(1)over-bar0) surface SO PHYSICAL REVIEW B LA English DT Article ID SENSING CHARACTERISTICS; CHEMICAL SENSORS; GAS SENSORS; ZINC-OXIDE; ZNO; TRANSITION; NANOWIRES; DYNAMICS; ENERGY AB We present first-principles total-energy calculations of adsorption and reaction of molecular oxygen on the ZnO(10 (1) over bar0) surface. We find that, on stoichiometric ZnO(10 (1) over bar0) surfaces, the adsorption is fully molecular with a small adsorption energy and the dissociation is energetically unfavorable. On a partially reduced ZnO(10 (1) over bar0) surface, the dissociative adsorption is energetically preferred, with one of the resulting oxygen atoms filling the original oxygen vacancy, while the other is in between two neighboring Zn atoms, forming a bridging oxygen adatom. This bridging oxygen may diffuse along the Zn-O dimer row and capture and fill another oxygen vacancy. The dissociative adsorption influences the electronic properties of the ZnO(10 (1) over bar0) surface. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 24 TC 35 Z9 36 U1 1 U2 24 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 OCT PY 2005 VL 72 IS 16 AR 161307 DI 10.1103/PhysRevB.72.161307 PG 4 WC Physics, Condensed Matter SC Physics GA 979IF UT WOS:000232934900011 ER PT J AU Ye, ZX Li, Q Si, WD Suenaga, M Solovyov, VF Johnson, PD AF Ye, ZX Li, Q Si, WD Suenaga, M Solovyov, VF Johnson, PD TI Response of fractal penetration of magnetic flux to disorder landscape in superconducting films SO PHYSICAL REVIEW B LA English DT Article ID CRITICAL-CURRENT DENSITY; MGB2/MG NANO-COMPOSITES; SLOW COMBUSTION; CRITICAL-STATE; THICK-FILMS; DEPOSITION; INVASION; PAPER AB Magnetic flux front and induction contours in superconducting YBa2Cu3O7-delta films with defect size s similar to xi (superconducting coherence length) and s >>xi are studied by magneto-optical imaging. Robust self-affine spatial correlation was observed using scaling analysis in the small pinning disorder-dominated (s similar to xi) films. The roughness exponent alpha was determined to be similar to 0.66, independent of numbers of defects (or the film thickness). When the disorder landscape also included a distribution of large defects (s >xi), the flux front and induction contours exhibited self-similarity, with a fractal dimension D determined to be similar to 1.33 using the box-counting method. The remarkably different flux penetration patterns were shown to be the manifestation of self-organized criticality at different length scales. C1 Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Li, Q (reprint author), Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA. EM qiangli@bnl.gov RI Solovyov, Vyacheslav/A-7724-2009 NR 25 TC 3 Z9 3 U1 0 U2 4 PU AMERICAN 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 OCT PY 2005 VL 72 IS 13 AR 134514 DI 10.1103/PhysRevB.72.134514 PG 5 WC Physics, Condensed Matter SC Physics GA 979HT UT WOS:000232933700093 ER PT J AU Yildirim, Y Moreo, A AF Yildirim, Y Moreo, A TI Effect of adiabatic phonons on striped and homogeneous ground states SO PHYSICAL REVIEW B LA English DT Article ID T-J MODEL; INCOMMENSURATE MAGNETIC FLUCTUATIONS; HIGH-TEMPERATURE SUPERCONDUCTORS; SPIN-FERMION MODEL; EXACT-DIAGONALIZATION; PHASE; HOLES; LA1.85SR0.15CUO4; LA2-XSR(X)CUO4; SUPPRESSION AB The effects of adiabatic phonons on a spin-fermion model for high T-c cuprates are studied using numerical simulations. In the absence of electron-phonon interactions (EPI), stripes in the ground state are observed [C. Buhler, S. Yunoki, and A. Moreo, Phys. Rev. Lett. 84, 2690 (2000); Phys. Rev. B. 62, R3620 (2000)] for certain dopings while homogeneous states are stabilized in other regions of parameter space. Different modes of adiabatic phonons are added to the Hamiltonian: breathing, shear, and half-breathing modes. Diagonal and off-diagonal electron-phonon couplings are considered. It is observed that strong diagonal EPI generate stripes in previously homogeneous states, while in striped ground states an increase in the diagonal couplings tends to stabilize the stripes, inducing a gap in the density of states (DOS) and rendering the ground state insulating. The off-diagonal terms, on the other hand, destabilize the stripes creating inhomogeneous ground states with a pseudogap at the chemical potential in the DOS. The breathing mode stabilizes static diagonal stripes; while the half-breathing (shear) modes stabilize dynamical (localized) vertical and horizontal stripes. The EPI induces decoherence of the quasiparticle peaks in the spectral functions. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37966 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA. RP Yildirim, Y (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37966 USA. NR 47 TC 2 Z9 2 U1 0 U2 1 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 OCT PY 2005 VL 72 IS 13 AR 134516 DI 10.1103/PhysRevB.72.134516 PG 9 WC Physics, Condensed Matter SC Physics GA 979HT UT WOS:000232933700095 ER PT J AU Adams, J Aggarwal, MM Ahammed, Z Amonett, J Anderson, BD Arkhipkin, D Averichev, GS Badyal, SK Bai, Y Balewski, J Barannikova, O Barnby, LS Baudot, J Bekele, S Belaga, VV Bellingeri-Laurikainen, A Bellwied, R Berger, J Bezverkhny, BI Bharadwaj, S Bhasin, A Bhati, AK Bhatia, VS Bichsel, H Bielcik, J Bielcikova, J Billmeier, A Bland, LC Blyth, CO Bonner, BE Botje, M Boucham, A Bouchet, J Brandin, AV Bravar, A Bystersky, M Cadman, RV Cai, XZ Caines, H Sanchez, MCDB Castillo, J Catu, O Cebra, D Chajecki, Z Chaloupka, P Chattopadhyay, S Chen, HF Chen, Y Cheng, J Cherney, M Chikanian, A Christie, W Coffin, JP Cormier, TM Cramer, JG Crawford, HJ Das, D Das, S Daugherity, M de Moura, MM Dedovich, TG Derevschikov, AA Didenko, L Dietel, T Dogra, SM Dong, WJ Dong, X Draper, JE Du, F Dubey, AK Dunin, VB Dunlop, JC Mazumdar, MRD Eckardt, V Edwards, WR Efimov, LG Emelianov, V Engelage, J Eppley, G Erazmus, B Estienne, M Fachini, P Faivre, J Fatemi, R Fedorisin, J Filimonov, K Filip, P Finch, E Fine, V Fisyak, Y Fu, J Gagliardi, CA Gaillard, L Gans, J Ganti, MS Geurts, F Ghazikhanian, V Ghosh, P Gonzalez, JE Gos, H Grachov, O Grebenyuk, O Grosnick, D Guertin, SM Guo, Y Gupta, A Gutierrez, TD Hallman, TJ Hamed, A Hardtke, D Harris, JW Heinz, M Henry, TW Hepplemann, S Hippolyte, B Hirsch, A Hjort, E Hoffmann, GW Huang, HZ Huang, SL Hughes, EW Humanic, TJ Igo, G Ishihara, A Jacobs, P Jacobs, WW Jedynak, M Jiang, H Jones, PG Judd, EG Kabana, S Kang, K Kaplan, M Keane, D Kechechyan, A Khodyrev, VY Kiryluk, J Kisiel, A Kislov, EM Klay, J Klein, SR Koetke, DD Kollegger, T Kopytine, M Kotchenda, L Kowalik, KL Kramer, M Kravtsov, P Kravtsov, VI Krueger, K Kuhn, C Kulikov, AI Kumar, A Kutuev, RK Kuznetsov, AA Lamont, MAC Landgraf, JM Lange, S Laue, F Lauret, J Lebedev, A Lednicky, R Lehocka, S LeVine, MJ Li, C Li, Q Li, Y Lin, G Lindenbaum, SJ Lisa, MA Liu, F Liu, H Liu, L Liu, QJ Liu, Z Ljubicic, T Llope, WJ Long, H Longacre, RS Lopez-Noriega, M Love, WA Lu, Y Ludlam, T Lynn, D Ma, GL Ma, JG Ma, YG Magestro, D Mahajan, S Mahapatra, DP Majka, R Mangotra, LK Manweiler, R Margetis, S Markert, C Martin, L Marx, JN Matis, HS Matulenko, YA McClain, CJ McShane, TS Meissner, F Melnick, Y Meschanin, A Miller, ML Minaev, NG Mironov, C Mischke, A Mishra, DK Mitchell, J Mohanty, B Molnar, L Moore, CF Morozov, DA Munhoz, MG Nandi, BK Nayak, SK Nayak, TK Nelson, JM Netrakanti, PK Nikitin, VA Nogach, LV Nurushev, SB Odyniec, G Ogawa, A Okorokov, V Oldenburg, M Olson, D Pal, SK Panebratsev, Y Panitkin, SY Pavlinov, AI Pawlak, T Peitzmann, T Perevoztchikov, V Perkins, C Peryt, W Petrov, VA Phatak, SC Picha, R Planinic, M Pluta, J Porile, N Porter, J Poskanzer, AM Potekhin, M Potrebenikova, E Potukuchi, BVKS Prindle, D Pruneau, C Putschke, J Rakness, G Raniwala, R Raniwala, S Ravel, O Ray, RL Razin, SV Reichhold, D Reid, JG Reinnarth, J Renault, G Retiere, F Ridiger, A Ritter, HG Roberts, JB Rogachevskiy, OV Romero, JL Rose, A Roy, C Ruan, L Russcher, M Sahoo, R Sakrejda, I Salur, S Sandweiss, J Sarsour, M Savin, I Sazhin, PS Schambach, J Scharenberg, RP Schmitz, N Schweda, K Seger, J Seyboth, P Shahaliev, E Shao, M Shao, W Sharma, M Shen, WQ Shestermanov, KE Shimanskiy, SS Sichtermann, E Simon, F Singaraju, RN Smirnov, N Snellings, R Sood, G Sorensen, P Sowinski, J Speltz, J Spinka, HM Srivastava, B Stadnik, A Stanislaus, TDS Stock, R Stolpovsky, A Strikhanov, M Stringfellow, B Suaide, AAP Sugarbaker, E Suire, C Sumbera, M Surrow, B Swanger, M Symons, TJM de Toledo, AS Tai, A Takahashi, J Tang, AH Tarnowsky, T Thein, D Thomas, JH Timoshenko, S Tokarev, M Trentalange, S Tribble, RE Tsai, OD Ulery, J Ullrich, T Underwood, DG Buren, GV Van Buren, G Vander Molen, AM Varma, R Vasilevski, IM Vasiliev, AN Vernet, R Vigdor, SE Viyogi, YP Vokal, S Voloshin, SA Waggoner, WT Wang, F Wang, G Wang, XL Wang, Y Wang, ZM Ward, H Watson, JW Webb, JC Westfall, GD Wetzler, A Whitten, C Wieman, H Wissink, SW Witt, R Wood, J Wu, J Xu, N Xu, Z Xu, ZZ Yamamoto, E Yepes, P Yurevich, VI Zborovsky, I Zhang, H Zhang, WM Zhang, Y Zhang, ZP Zoulkarneev, R Zoulkarneeva, Y Zubarev, AN AF Adams, J Aggarwal, MM Ahammed, Z Amonett, J Anderson, BD Arkhipkin, D Averichev, GS Badyal, SK Bai, Y Balewski, J Barannikova, O Barnby, LS Baudot, J Bekele, S Belaga, VV Bellingeri-Laurikainen, A Bellwied, R Berger, J Bezverkhny, BI Bharadwaj, S Bhasin, A Bhati, AK Bhatia, VS Bichsel, H Bielcik, J Bielcikova, J Billmeier, A Bland, LC Blyth, CO Bonner, BE Botje, M Boucham, A Bouchet, J Brandin, AV Bravar, A Bystersky, M Cadman, RV Cai, XZ Caines, H Sanchez, MCDB Castillo, J Catu, O Cebra, D Chajecki, Z Chaloupka, P Chattopadhyay, S Chen, HF Chen, Y Cheng, J Cherney, M Chikanian, A Christie, W Coffin, JP Cormier, TM Cramer, JG Crawford, HJ Das, D Das, S Daugherity, M de Moura, MM Dedovich, TG Derevschikov, AA Didenko, L Dietel, T Dogra, SM Dong, WJ Dong, X Draper, JE Du, F Dubey, AK Dunin, VB Dunlop, JC Mazumdar, MRD Eckardt, V Edwards, WR Efimov, LG Emelianov, V Engelage, J Eppley, G Erazmus, B Estienne, M Fachini, P Faivre, J Fatemi, R Fedorisin, J Filimonov, K Filip, P Finch, E Fine, V Fisyak, Y Fu, J Gagliardi, CA Gaillard, L Gans, J Ganti, MS Geurts, F Ghazikhanian, V Ghosh, P Gonzalez, JE Gos, H Grachov, O Grebenyuk, O Grosnick, D Guertin, SM Guo, Y Gupta, A Gutierrez, TD Hallman, TJ Hamed, A Hardtke, D Harris, JW Heinz, M Henry, TW Hepplemann, S Hippolyte, B Hirsch, A Hjort, E Hoffmann, GW Huang, HZ Huang, SL Hughes, EW Humanic, TJ Igo, G Ishihara, A Jacobs, P Jacobs, WW Jedynak, M Jiang, H Jones, PG Judd, EG Kabana, S Kang, K Kaplan, M Keane, D Kechechyan, A Khodyrev, VY Kiryluk, J Kisiel, A Kislov, EM Klay, J Klein, SR Koetke, DD Kollegger, T Kopytine, M Kotchenda, L Kowalik, KL Kramer, M Kravtsov, P Kravtsov, VI Krueger, K Kuhn, C Kulikov, AI Kumar, A Kutuev, RK Kuznetsov, AA Lamont, MAC Landgraf, JM Lange, S Laue, F Lauret, J Lebedev, A Lednicky, R Lehocka, S LeVine, MJ Li, C Li, Q Li, Y Lin, G Lindenbaum, SJ Lisa, MA Liu, F Liu, H Liu, L Liu, QJ Liu, Z Ljubicic, T Llope, WJ Long, H Longacre, RS Lopez-Noriega, M Love, WA Lu, Y Ludlam, T Lynn, D Ma, GL Ma, JG Ma, YG Magestro, D Mahajan, S Mahapatra, DP Majka, R Mangotra, LK Manweiler, R Margetis, S Markert, C Martin, L Marx, JN Matis, HS Matulenko, YA McClain, CJ McShane, TS Meissner, F Melnick, Y Meschanin, A Miller, ML Minaev, NG Mironov, C Mischke, A Mishra, DK Mitchell, J Mohanty, B Molnar, L Moore, CF Morozov, DA Munhoz, MG Nandi, BK Nayak, SK Nayak, TK Nelson, JM Netrakanti, PK Nikitin, VA Nogach, LV Nurushev, SB Odyniec, G Ogawa, A Okorokov, V Oldenburg, M Olson, D Pal, SK Panebratsev, Y Panitkin, SY Pavlinov, AI Pawlak, T Peitzmann, T Perevoztchikov, V Perkins, C Peryt, W Petrov, VA Phatak, SC Picha, R Planinic, M Pluta, J Porile, N Porter, J Poskanzer, AM Potekhin, M Potrebenikova, E Potukuchi, BVKS Prindle, D Pruneau, C Putschke, J Rakness, G Raniwala, R Raniwala, S Ravel, O Ray, RL Razin, SV Reichhold, D Reid, JG Reinnarth, J Renault, G Retiere, F Ridiger, A Ritter, HG Roberts, JB Rogachevskiy, OV Romero, JL Rose, A Roy, C Ruan, L Russcher, M Sahoo, R Sakrejda, I Salur, S Sandweiss, J Sarsour, M Savin, I Sazhin, PS Schambach, J Scharenberg, RP Schmitz, N Schweda, K Seger, J Seyboth, P Shahaliev, E Shao, M Shao, W Sharma, M Shen, WQ Shestermanov, KE Shimanskiy, SS Sichtermann, E Simon, F Singaraju, RN Smirnov, N Snellings, R Sood, G Sorensen, P Sowinski, J Speltz, J Spinka, HM Srivastava, B Stadnik, A Stanislaus, TDS Stock, R Stolpovsky, A Strikhanov, M Stringfellow, B Suaide, AAP Sugarbaker, E Suire, C Sumbera, M Surrow, B Swanger, M Symons, TJM de Toledo, AS Tai, A Takahashi, J Tang, AH Tarnowsky, T Thein, D Thomas, JH Timoshenko, S Tokarev, M Trentalange, S Tribble, RE Tsai, OD Ulery, J Ullrich, T Underwood, DG Buren, GV Van Buren, G Vander Molen, AM Varma, R Vasilevski, IM Vasiliev, AN Vernet, R Vigdor, SE Viyogi, YP Vokal, S Voloshin, SA Waggoner, WT Wang, F Wang, G Wang, XL Wang, Y Wang, ZM Ward, H Watson, JW Webb, JC Westfall, GD Wetzler, A Whitten, C Wieman, H Wissink, SW Witt, R Wood, J Wu, J Xu, N Xu, Z Xu, ZZ Yamamoto, E Yepes, P Yurevich, VI Zborovsky, I Zhang, H Zhang, WM Zhang, Y Zhang, ZP Zoulkarneev, R Zoulkarneeva, Y Zubarev, AN CA STAR Collaboration TI Incident energy dependence of p(t) correlations at relativistic energies SO PHYSICAL REVIEW C LA English DT Article ID BY-EVENT FLUCTUATIONS; HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; TRANSVERSE-MOMENTUM; AU COLLISIONS; SIGNATURES; MODEL; PP AB We present results for two-particle transverse momentum correlations, , as a function of event centrality for Au+Au collisions at root SNN = 20, 62, 130, and 200 GeV at the BNL Relativistic Heavy Ion Collider. We observe correlations decreasing with centrality that are similar at all four incident energies. The correlations multiplied by the multiplicity density increase with incident energy, and the centrality dependence may show evidence of processes such as thermalization, jet production, or the saturation of transverse flow. The square root of the correlations divided by the event-wise average transverse momentum per event shows little or no beam energy dependence and generally agrees with previous measurements made at the CERN Super Proton Synchrotron. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Bern, CH-3012 Bern, Switzerland. Univ Birmingham, Birmingham, W Midlands, England. Brookhaven Natl Lab, Upton, NY 11973 USA. CALTECH, Pasadena, CA 91125 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Los Angeles, Los Angeles, CA 90095 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Creighton Univ, Omaha, NE 68178 USA. Acad Sci Czech Republic, Inst Nucl Phys, CZ-25068 Rez, Czech Republic. Lab High Energy, Dubna, Russia. Particle Phys Lab, Dubna, Russia. Goethe Univ Frankfurt, D-6000 Frankfurt, Germany. Inst Phys, Bhubaneswar 751005, Orissa, India. Indian Inst Technol, Bombay 400076, Maharashtra, India. Indiana Univ, Bloomington, IN 47408 USA. Inst Rech Subatom, Strasbourg, France. Univ Jammu, Jammu 180001, India. Kent State Univ, Kent, OH 44242 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. MIT, Cambridge, MA 02139 USA. Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. Michigan State Univ, E Lansing, MI 48824 USA. Moscow Engn Phys Inst, Moscow 115409, Russia. CUNY City Coll, New York, NY 10031 USA. NIKHEF H, Amsterdam, Netherlands. Univ Utrecht, Amsterdam, Netherlands. Ohio State Univ, Columbus, OH 43210 USA. Panjab Univ, Chandigarh 160014, India. Penn State Univ, University Pk, PA 16802 USA. Inst High Energy Phys, Protvino, Russia. Purdue Univ, W Lafayette, IN 47907 USA. Univ Rajasthan, Jaipur 302004, Rajasthan, India. Rice Univ, Houston, TX 77251 USA. Univ Sao Paulo, Sao Paulo, Brazil. Univ Sci & Technol China, Anhui 230027, Peoples R China. Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. SUBATECH, Nantes, France. Texas A&M Univ, College Stn, TX 77843 USA. Univ Texas, Austin, TX 78712 USA. Tsinghua Univ, Beijing 100084, Peoples R China. Valparaiso Univ, Valparaiso, IN 46383 USA. Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India. Warsaw Univ Technol, Warsaw, Poland. Univ Washington, Seattle, WA 98195 USA. Wayne State Univ, Detroit, MI 48201 USA. HZNU, CCNU, Inst Particle Phys, Wuhan 430079, Peoples R China. Yale Univ, New Haven, CT 06520 USA. Univ Zagreb, HR-10002 Zagreb, Croatia. RP Adams, J (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Sumbera, Michal/O-7497-2014; Barnby, Lee/G-2135-2010; Strikhanov, Mikhail/P-7393-2014; Mischke, Andre/D-3614-2011; Takahashi, Jun/B-2946-2012; Chen, Yu/E-3788-2012; Planinic, Mirko/E-8085-2012; Peitzmann, Thomas/K-2206-2012; Witt, Richard/H-3560-2012; Castillo Castellanos, Javier/G-8915-2013; Voloshin, Sergei/I-4122-2013; Lednicky, Richard/K-4164-2013; Zborovsky, Imrich/G-7964-2014; Dogra, Sunil /B-5330-2013; Kisiel, Adam/O-8754-2015; Chaloupka, Petr/E-5965-2012; Suaide, Alexandre/L-6239-2016; Okorokov, Vitaly/C-4800-2017; Ma, Yu-Gang/M-8122-2013; OI Sumbera, Michal/0000-0002-0639-7323; Barnby, Lee/0000-0001-7357-9904; Strikhanov, Mikhail/0000-0003-2586-0405; Takahashi, Jun/0000-0002-4091-1779; Peitzmann, Thomas/0000-0002-7116-899X; Castillo Castellanos, Javier/0000-0002-5187-2779; Kisiel, Adam/0000-0001-8322-9510; Suaide, Alexandre/0000-0003-2847-6556; Okorokov, Vitaly/0000-0002-7162-5345; Ma, Yu-Gang/0000-0002-0233-9900; Mohanty, Bedangadas/0000-0001-9610-2914; Gutierrez, Thomas/0000-0002-0330-6414; Bhasin, Anju/0000-0002-3687-8179; van Leeuwen, Marco/0000-0002-5222-4888 NR 35 TC 70 Z9 71 U1 1 U2 3 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 OCT PY 2005 VL 72 IS 4 AR 044902 DI 10.1103/PhysRevC.72.044902 PG 6 WC Physics, Nuclear SC Physics GA 979IK UT WOS:000232935400049 ER PT J AU Aznauryan, IG Burkert, VD Fedotov, GV Ishkhanov, BS Mokeev, VI AF Aznauryan, IG Burkert, VD Fedotov, GV Ishkhanov, BS Mokeev, VI TI Electroexcitation of nucleon resonances at Q(2)=0.65(GeV/c)(2) from a combined analysis of single- and double-pion electroproduction data SO PHYSICAL REVIEW C LA English DT Article ID REGION; PHOTOPRODUCTION; PROTON; MESONS; MODEL AB Data on single- and double-charged-pion electroproduction off protons are successfully described in the second and third nucleon resonance regions with common N-* photocouplings. The analysis was carried out with separate isobar models for both reactions. From the combined analysis of two exclusive channels, the gamma(*)p -> N*+ helicity amplitudes are obtained for the resonances P-11(1440),D-13(1520),S-31(1620),S-11(1650),F-15(1680),D-33(1700),D-13(1700), and P-13(1720) at Q(2)=0.65(GeV/c)(2). C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Yerevan Phys Inst, Yerevan 375036, Armenia. Moscow MV Lomonosov State Univ, Skobeltsyn Nucl Phys Inst, RU-119899 Moscow, Russia. RP Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RI Ishkhanov, Boris/E-1431-2012 NR 31 TC 50 Z9 50 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 OCT PY 2005 VL 72 IS 4 AR 045201 DI 10.1103/PhysRevC.72.045201 PG 9 WC Physics, Nuclear SC Physics GA 979IK UT WOS:000232935400052 ER PT J AU Batchelder, JC Bilheux, JC Bingham, CR Carter, HK Fong, D Garrett, PE Grzywacz, R Hamilton, JH Hartley, DJ Hwang, JK Krolas, W Kulp, WD Larochelle, Y Piechaczek, A Ramayya, AV Rykaczewski, KP Spejewski, EH Stracener, DW Tantawy, MN Winger, JA Wood, JL Zganjar, EF AF Batchelder, JC Bilheux, JC Bingham, CR Carter, HK Fong, D Garrett, PE Grzywacz, R Hamilton, JH Hartley, DJ Hwang, JK Krolas, W Kulp, WD Larochelle, Y Piechaczek, A Ramayya, AV Rykaczewski, KP Spejewski, EH Stracener, DW Tantawy, MN Winger, JA Wood, JL Zganjar, EF TI New isomeric state in Ag-116 SO PHYSICAL REVIEW C LA English DT Article ID BETA-DECAY; AG ISOTOPES; SPECTROSCOPY; ENERGY; MASSES; PD AB A new isomer in Ag-116 with a half-life of 20(1) s has been discovered through the use of conversion electron, beta, and gamma spectroscopy of on-line mass-separated radioactivities at the Holifield Radioactive Ion Beam Facility at ORNL. The observed electron peaks at 22.5, 44.42, and 47.33 keV were interpreted as the K,L, and M conversion electron lines resulting from a 47.9-keV E3 transition associated with the decay of a second isomeric level in Ag-116. A new level structure of Ag-116 is proposed, with the levels identified as the 0(-) ground-state and isomers at 47.9 and 128.8 keV having spin/parities of 3(+) and 6(-) respectively. C1 Oak Ridge Natl Lab, UNIRIB, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. USN Acad, Dept Phys, Annapolis, MD 21402 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland. Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA. RP Batchelder, JC (reprint author), Oak Ridge Natl Lab, UNIRIB, Oak Ridge, TN 37831 USA. RI Krolas, Wojciech/N-9391-2013; Bilheux, Jean/A-2823-2016 OI Bilheux, Jean/0000-0003-2172-6487 NR 24 TC 0 Z9 0 U1 0 U2 0 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 044306 DI 10.1103/PhysRevC.72.044306 PG 6 WC Physics, Nuclear SC Physics GA 979IK UT WOS:000232935400023 ER PT J AU Epelbaum, E Meissner, UG AF Epelbaum, E Meissner, UG TI Isospin-violating nucleon-nucleon forces using the method of unitary transformation SO PHYSICAL REVIEW C LA English DT Article ID CHIRAL PERTURBATION-THEORY; EFFECTIVE-FIELD THEORY; VIRTUAL PHOTONS; PROTON-PROTON; QUARK MASSES; LAGRANGIANS; SCATTERING; SYMMETRY; ORDER AB Recently, we have derived the leading and subleading isospin-breaking three-nucleon forces using the method of unitary transformation. In the present work we extend this analysis and consider the corresponding two-nucleon forces using the same approach. Certain contributions to the isospin-violating one- and two-pion-exchange potential have already been discussed by various groups within the effective field theory framework. Our findings agree with the previously obtained results. In addition, we present the expressions for the subleading charge-symmetry-breaking two-pion exchange potential which were not considered before. These corrections turn out to be numerically important. Together with the three-nucleon force results presented in our previous work, the results of the present study specify completely isospin-violating nuclear forces up to the order q(5)/Lambda(5), where q (Lambda) denotes the soft (hard) scale. C1 Jefferson Lab, Div Theory, Newport News, VA 23606 USA. Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany. Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany. RP Epelbaum, E (reprint author), Jefferson Lab, Div Theory, Newport News, VA 23606 USA. EM epelbaum@jlab.org; meissner@itkp.uni-bonn.de NR 48 TC 30 Z9 30 U1 0 U2 0 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 OCT PY 2005 VL 72 IS 4 AR 044001 DI 10.1103/PhysRevC.72.044001 PG 19 WC Physics, Nuclear SC Physics GA 979IK UT WOS:000232935400011 ER PT J AU Fornal, B Zhu, S Janssens, RVF Honma, M Broda, R Brown, BA Carpenter, MP Freeman, SJ Hammond, N Kondev, FG Krolas, W Lauritsen, T Liddick, SN Lister, CJ Lunardi, S Mantica, PF Marginean, N Mizusaki, T Moore, EF Otsuka, T Pawlat, T Seweryniak, D Tomlin, BE Ur, CA Wiedenhover, I Wrzesinski, J AF Fornal, B Zhu, S Janssens, RVF Honma, M Broda, R Brown, BA Carpenter, MP Freeman, SJ Hammond, N Kondev, FG Krolas, W Lauritsen, T Liddick, SN Lister, CJ Lunardi, S Mantica, PF Marginean, N Mizusaki, T Moore, EF Otsuka, T Pawlat, T Seweryniak, D Tomlin, BE Ur, CA Wiedenhover, I Wrzesinski, J TI Yrast structure of neutron-rich Ti-53 SO PHYSICAL REVIEW C LA English DT Article ID BETA-DECAY; SHELL; NUCLEI AB gamma rays from neutron-rich Ti nuclei in the vicinity of N = 32 have been studied at Gammasphere using deep-inelastic reactions induced by Ca-48 beams on thick Pb-208 and U-238 targets. The Ti-53 yrast cascade was identified for the first time, and the location in energy of states with spin up to I = 21/2 was determined. The excitations of Ti-53 provide new tests of effective interactions for full-pf-shell calculations. Comparisons between theory and experiment for the highest spin states in Ti-53 favor the recently proposed GXPF1A interaction, which accounts for the appearance of a neutron subshell closure at N = 32 in Ti isotopes as well as for the lack of a similar subshell closure at N = 34, as predicted by earlier calculations with another interaction. C1 Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland. Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA. Univ Aizu, Ctr Math Sci, Fukushima 9658580, Japan. Michigan State Univ, Natl Superconduct Cyclotron Lab, E Lansing, MI 48824 USA. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England. Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. Univ Padua, Dipartimento Fis, I-35131 Padua, Italy. INFN, Sez Padova, I-35131 Padua, Italy. Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy. Senshu Univ, Inst Nat Sci, Kawasaki, Kanagawa 2148580, Japan. Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. RIKEN, Wako, Saitama 3510198, Japan. RP Fornal, B (reprint author), Polish Acad Sci, Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland. RI Freeman, Sean/B-1280-2010; Krolas, Wojciech/N-9391-2013; OTSUKA, TAKAHARU/G-5072-2014; Carpenter, Michael/E-4287-2015; Marginean, Nicolae Marius/C-4732-2011 OI Freeman, Sean/0000-0001-9773-4921; Carpenter, Michael/0000-0002-3237-5734; NR 19 TC 20 Z9 20 U1 1 U2 1 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 044315 DI 10.1103/PhysRevC.72.044315 PG 8 WC Physics, Nuclear SC Physics GA 979IK UT WOS:000232935400032 ER PT J AU Kinney, ER Matthews, JL Gram, PAM MacArthur, DW Piasetzky, E Rebka, GA Roberts, DA AF Kinney, ER Matthews, JL Gram, PAM MacArthur, DW Piasetzky, E Rebka, GA Roberts, DA TI Inclusive pion double charge exchange in He-4 at intermediate energies SO PHYSICAL REVIEW C LA English DT Article ID MULTIPLE-SCATTERING FORMALISM; CHIRAL-SYMMETRY BREAKING; DELTA-RESONANCE REGION; TOTAL CROSS-SECTION; NUCLEAR-REACTIONS; INELASTIC-SCATTERING; PI-HE-4 SCATTERING; NEGATIVE PIONS; GEV-C; MESONS AB A systematic experimental study of inclusive pion double charge exchange in He-4 has been undertaken. The reaction He-4(pi(+), pi(-))4p was observed at incident energies of 120, 150, 180, 240, and 270 MeV; the He-4(pi(-), pi(+))4n reaction was observed at incident energies of 180 and 240 MeV. At each incident energy, the doubly differential cross section was measured at three to five outgoing pion laboratory angles between 25(degrees) and 130(degrees). At each angle, cross sections were measured over the range of outgoing pion energies from 10 MeV to the kinematic limit for the reaction in which the final state consists of the oppositely charged pion plus four free nucleons. The spectra of outgoing pions are strikingly different from those observed for the inclusive double charge exchange reaction in heavier nuclei but resemble those observed in the (pi(-), pi(+)) reaction in He-3. The forward-angle spectra in the He-3 and He-4 reactions exhibit a prominent peak at high outgoing pion energies. Interpretation of the peaks in He-3 (He-4) as a three-nucleon (four-nucleon) resonance is ruled out by kinematic analysis. The results of a calculation, wherein the double charge exchange reaction is assumed to proceed as two sequential single charge exchange interactions, suggest that the high-energy peak is naturally explained by this double scattering mechanism. Nonstatic treatment of the pi N interactions and the inclusion of nuclear binding effects appear to be important in reproducing the shape of the energy spectra at forward angles. C1 MIT, Dept Phys, Cambridge, MA 02139 USA. MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Wyoming, Dept Phys, Laramie, WY 82071 USA. RP Kinney, ER (reprint author), MIT, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA. NR 79 TC 2 Z9 2 U1 0 U2 0 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 044608 DI 10.1103/PhysRevC.72.044608 PG 21 WC Physics, Nuclear SC Physics GA 979IK UT WOS:000232935400047 ER PT J AU Kistryn, S Stephan, E Biegun, A Bodek, K Deltuva, A Epelbaum, E Ermisch, K Glockle, W Golak, J Kalantar-Nayestanaki, N Kamada, H Kis, M Klos, B Kozela, A Kuros-Zolnierczuk, J Mahjour-Shafiei, M Meissner, UG Micherdzinska, A Nogga, A Sauer, PU Skibinski, R Sworst, R Witala, H Zejma, J Zipper, W AF Kistryn, S Stephan, E Biegun, A Bodek, K Deltuva, A Epelbaum, E Ermisch, K Glockle, W Golak, J Kalantar-Nayestanaki, N Kamada, H Kis, M Klos, B Kozela, A Kuros-Zolnierczuk, J Mahjour-Shafiei, M Meissner, UG Micherdzinska, A Nogga, A Sauer, PU Skibinski, R Sworst, R Witala, H Zejma, J Zipper, W TI Systematic study of three-nucleon force effects in the cross section of the deuteron-proton breakup at 130 MeV SO PHYSICAL REVIEW C LA English DT Article ID DELTA-ISOBAR EXCITATION; NUCLEAR-FORCES; CHIRAL LAGRANGIANS; ELASTIC-SCATTERING; ANALYZING POWERS; 3-BODY INTERACTIONS; 2-NUCLEON SYSTEM; CONFIGURATIONS; EXPANSION; CONVERGENCE AB High-precision cross-section data of the deuteron-proton breakup reaction at 130 MeV are presented for 72 kinematically complete configurations. The data cover a large region of the available phase space, divided into a systematic grid of kinematical variables. They are compared with theoretical predictions, in which the full dynamics of the three-nucleon (3N) system is obtained in three different ways: realistic nucleon-nucleon (NN) potentials are combined with model 3N forces (3NF's) or with an effective 3NF resulting from explicit treatment of the Delta-isobar excitation. Alternatively, the chiral perturbation theory approach is used at the next-to-next-to-leading order with all relevant NN and 3N contributions taken into account. The generated dynamics is then applied to calculate cross-section values by rigorous solution of the 3N Faddeev equations. The comparison of the calculated cross sections with the experimental data shows a clear preference for the predictions in which the 3NF's are included. The majority of the experimental data points are well reproduced by the theoretical predictions. The remaining discrepancies are investigated by inspecting cross sections integrated over certain kinematical variables. The procedure of global comparisons leads to establishing regularities in disagreements between the experimental data and the theoretically predicted values of the cross sections. They indicate deficiencies still present in the assumed models of the 3N system dynamics. C1 Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland. Silesian Univ, Inst Phys, PL-40007 Katowice, Poland. Univ Lisbon, Ctr Fis Nucl, P-1649003 Lisbon, Portugal. Jefferson Lab, Div Theory, Newport News, VA 23606 USA. Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands. Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany. Kyushu Inst Technol, Dept Phys, Kitakyushu, Fukuoka 8048550, Japan. Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland. Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany. Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany. Leibniz Univ Hannover, Inst Theoret Phys, D-30167 Hannover, Germany. RP Jagiellonian Univ, Inst Phys, Reymonta 4, PL-30059 Krakow, Poland. EM skistryn@if.uj.edu.pl RI Nogga, Andreas/A-3354-2008; Biegun, Aleksandra/J-8916-2013; Deltuva, Arnoldas/M-3749-2013 OI Nogga, Andreas/0000-0003-2156-748X; Deltuva, Arnoldas/0000-0002-0732-7749 NR 73 TC 66 Z9 66 U1 0 U2 3 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 OCT PY 2005 VL 72 IS 4 AR 044006 DI 10.1103/PhysRevC.72.044006 PG 25 WC Physics, Nuclear SC Physics GA 979IK UT WOS:000232935400016 ER PT J AU Steiner, AW Li, BA AF Steiner, AW Li, BA TI Isospin diffusion in heavy-ion collisions and the neutron skin thickness of lead SO PHYSICAL REVIEW C LA English DT Article ID ASYMMETRIC NUCLEAR-MATTER; STAR STRUCTURE; EQUATION; DEPENDENCE; PB-208; PROBE; FLOW AB The correlation between the thickness of the neutron skin in Pb-208 and the degree of isospin diffusion in heavy-ion collisions is examined. The same equation of state is used to compute the degree of isospin diffusion in an isospin-depedent transport model and the neutron skin thickness in the Hartree-Fock approximation. We find that skin thicknesses less than 0.15 fm are excluded by the isospin diffusion data. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Arkansas State Univ, Dept Chem & Phys, State Univ, AR 72467 USA. RP Steiner, AW (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM asteiner@lanl.gov OI Steiner, Andrew/0000-0003-2478-4017 NR 48 TC 69 Z9 70 U1 0 U2 0 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 OCT PY 2005 VL 72 IS 4 AR 041601 DI 10.1103/PhysRevC.72.041601 PG 5 WC Physics, Nuclear SC Physics GA 979IK UT WOS:000232935400006 ER PT J AU Wang, P Lawley, S Leinweber, DB Thomas, AW Williams, AG AF Wang, P Lawley, S Leinweber, DB Thomas, AW Williams, AG TI Neutron stars and strange stars in the chiral SU(3) quark mean field model SO PHYSICAL REVIEW C LA English DT Article ID MESON COUPLING MODEL; CLOUDY-BAG MODEL; NUCLEAR-MATTER; FINITE NUCLEI; EQUATION; SYSTEMS; STATE; OSCILLATIONS; SCATTERING; DENSITIES AB We investigate the equations of state for pure neutron matter and for nonstrange and strange hadronic matter in beta equilibrium, including Lambda,Sigma, and Xi hyperons. The masses and radii of these kinds of stars are obtained. For a pure neutron star, the maximum mass is about 1.8M(sun), while for a strange (nonstrange) hadronic star in beta equilibrium, the maximum mass is around 1.45M(sun) (1.7M(sun)). The typical radii of pure neutron stars and strange hadronic stars are about 11.5-13.0 km and 11.5-12.5 km, respectively. C1 Univ Adelaide, CSSM, Adelaide, SA 5005, Australia. Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia. Jefferson Lab, Newport News, VA 23606 USA. RP Wang, P (reprint author), Univ Adelaide, CSSM, Adelaide, SA 5005, Australia. RI Thomas, Anthony/G-4194-2012; Williams, Anthony/I-6698-2012; Leinweber, Derek/J-6705-2013; OI Thomas, Anthony/0000-0003-0026-499X; Leinweber, Derek/0000-0002-4745-6027; Williams, Anthony/0000-0002-1472-1592 NR 60 TC 16 Z9 16 U1 0 U2 0 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 OCT PY 2005 VL 72 IS 4 AR 045801 DI 10.1103/PhysRevC.72.045801 PG 8 WC Physics, Nuclear SC Physics GA 979IK UT WOS:000232935400061 ER PT J AU Abbott, B Abbott, R Adhikari, R Ageev, A Allen, B Amin, R Anderson, SB Anderson, WG Araya, M Armandula, H Ashley, M Asiri, F Aufmuth, P Aulbert, C Babak, S Balasubramanian, R Ballmer, S Barish, BC Barker, C Barker, D Barnes, M Barr, B Barton, MA Bayer, K Beausoleil, R Belczynski, K Bennett, R Berukoff, SJ Betzwieser, J Bhawal, B Bilenko, IA Billingsley, G Black, E Blackburn, K Blackburn, L Bland, B Bochner, B Bogue, L Bork, R Bose, S Brady, PR Braginsky, VB Brau, JE Brown, DA Bullington, A Bunkowski, A Buonanno, A Burgess, R Busby, D Butler, WE Byer, RL Cadonati, L Cagnoli, G Camp, JB Cantley, CA Cardenas, L Carter, K Casey, MM Castiglione, J Chandler, A Chapsky, J Charlton, P Chatterji, S Chelkowski, S Chen, Y Chickarmane, V Chin, D Christensen, N Churches, D Cokelaer, T Colacino, C Coldwell, R Coles, M Cook, D Corbitt, T Coyne, D Creighton, JDE Creighton, TD Crooks, DRM Csatorday, P Cusack, BJ Cutler, C D'Ambrosio, E Danzmann, K Daw, E DeBra, D Delker, T Dergachev, V DeSalvo, R Dhurandhar, S Di Credico, A Diaz, M Ding, H Drever, RWP Dupuis, RJ Edlund, JA Ehrens, P Elliffe, EJ Etzel, T Evans, M Evans, T Fairhurst, S Fallnich, C Farnham, D Fejer, MM Findley, T Fine, M Finn, LS Franzen, KY Freise, A Frey, R Fritschel, P Frolov, VV Fyffe, M Ganezer, KS Garofoli, J Giaime, JA Gillespie, A Goda, K Gonzalez, G Gossler, S Grandclement, P Grant, A Gray, C Gretarsson, AM Grimmett, D Grote, H Grunewald, S Guenther, M Gustafson, E Gustafson, R Hamilton, WO Hammond, M Hanson, J Hardham, C Harms, J Harry, G Hartunian, A Heefner, J Hefetz, Y Heinzel, G Heng, IS Hennessy, M Hepler, N Heptonstall, A Heurs, M Hewitson, M Hild, S Hindman, N Hoang, P Hough, J Hrynevych, M Hua, W Ito, M Itoh, Y Ivanov, A Jennrich, O Johnson, B Johnson, WW Johnston, WR Jones, DI Jones, L Jungwirth, D Kalogera, V Katsavounidis, E Kawabe, K Kawamura, S Kells, W Kern, J Khan, A Killbourn, S Killow, CJ Kim, C King, C King, P Klimenko, S Koranda, S Kotter, K Kovalik, J Kozak, D Krishnan, B Landry, M Langdale, J Lantz, B Lawrence, R Lazzarini, A Lei, M Leonor, I Libbrecht, K Libson, A Lindquist, P Liu, S Logan, J Lormand, M Lubinski, M Luck, H Lyons, TT Machenschalk, B MacInnis, M Mageswaran, M Mailand, K Majid, W Malec, M Mann, F Marin, A Marka, S Maros, E Mason, J Mason, K Matherny, O Matone, L Mavalvala, N McCarthy, R McClelland, DE McHugh, M McNabb, JWC Mendell, G Mercer, RA Meshkov, S Messaritaki, E Messenger, C Mitrofanov, VP Mitselmakher, G Mittleman, R Miyakawa, O Miyoki, S Mohanty, S Moreno, G Mossavi, K Mueller, G Mukherjee, S Murray, P Myers, J Nagano, S Nash, T Nayak, R Newton, G Nocera, F Noel, JS Nutzman, P Olson, T O'Reilly, B Ottaway, DJ Ottewill, A Ouimette, D Overmier, H Owen, BJ Pan, Y Papa, MA Parameshwaraiah, V Parameswaran, A Parameswariah, C Pedraza, M Penn, S Pitkin, M Plissi, M Prix, R Quetschke, V Raab, F Radkins, H Rahkola, R Rakhmanov, M Rao, SR Rawlins, K Ray-Majumder, S Re, V Redding, D Regehr, MW Regimbau, T Reid, S Reilly, KT Reithmaier, K Reitze, DH Richman, S Riesen, R Riles, K Rivera, B Rizzi, A Robertson, DI Robertson, NA Robison, L Roddy, S Rollins, J Romano, JD Romie, J Rong, H Rose, D Rotthoff, E Rowan, S Rudiger, A Russell, P Ryan, K Salzman, I Sandberg, V Sanders, GH Sannibale, V Sathyaprakash, B Saulson, PR Savage, R Sazonov, A Schilling, R Schlaufman, K Schmidt, V Schnabel, R Schofield, R Schutz, BF Schwinberg, P Scott, SM Seader, SE Searle, AC Sears, B Seel, S Seifert, F Sengupta, AS Shapiro, CA Shawhan, P Shoemaker, DH Shu, QZ Sibley, A Siemens, X Sievers, L Sigg, D Sintes, AM Smith, JR Smith, M Smith, MR Sneddon, PH Spero, R Stapfer, G Steussy, D Strain, KA Strom, D Stuver, A Summerscales, T Sumner, MC Sutton, PJ Sylvestre, J Takamori, A Tanner, DB Tariq, H Taylor, I Taylor, R Taylor, R Thorne, KA Thorne, KS Tibbits, M Tilav, S Tinto, M Tokmakov, KV Torres, C Torrie, C Traylor, G Tyler, W Ugolini, D Ungarelli, C Vallisneri, M van Putten, M Vass, S Vecchio, A Veitch, J Vorvick, C Vyachanin, SP Wallace, L Walther, H Ward, H Ware, B Watts, K Webber, D Weidner, A Weiland, U Weinstein, A Weiss, R Welling, H Wen, L Wen, S Whelan, JT Whitcomb, SE Whiting, BF Wiley, S Wilkinson, C Willems, PA Williams, PR Williams, R Willke, B Wilson, A Winjum, BJ Winkler, W Wise, S Wiseman, AG Woan, G Woods, D Wooley, R Worden, J Wu, W Yakushin, I Yamamoto, H Yoshida, S Zaleski, KD Zanolin, M Zawischa, I Zhang, L Zhu, R Zotov, N Zucker, M Zweizig, J AF Abbott, B Abbott, R Adhikari, R Ageev, A Allen, B Amin, R Anderson, SB Anderson, WG Araya, M Armandula, H Ashley, M Asiri, F Aufmuth, P Aulbert, C Babak, S Balasubramanian, R Ballmer, S Barish, BC Barker, C Barker, D Barnes, M Barr, B Barton, MA Bayer, K Beausoleil, R Belczynski, K Bennett, R Berukoff, SJ Betzwieser, J Bhawal, B Bilenko, IA Billingsley, G Black, E Blackburn, K Blackburn, L Bland, B Bochner, B Bogue, L Bork, R Bose, S Brady, PR Braginsky, VB Brau, JE Brown, DA Bullington, A Bunkowski, A Buonanno, A Burgess, R Busby, D Butler, WE Byer, RL Cadonati, L Cagnoli, G Camp, JB Cantley, CA Cardenas, L Carter, K Casey, MM Castiglione, J Chandler, A Chapsky, J Charlton, P Chatterji, S Chelkowski, S Chen, Y Chickarmane, V Chin, D Christensen, N Churches, D Cokelaer, T Colacino, C Coldwell, R Coles, M Cook, D Corbitt, T Coyne, D Creighton, JDE Creighton, TD Crooks, DRM Csatorday, P Cusack, BJ Cutler, C D'Ambrosio, E Danzmann, K Daw, E DeBra, D Delker, T Dergachev, V DeSalvo, R Dhurandhar, S Di Credico, A Diaz, M Ding, H Drever, RWP Dupuis, RJ Edlund, JA Ehrens, P Elliffe, EJ Etzel, T Evans, M Evans, T Fairhurst, S Fallnich, C Farnham, D Fejer, MM Findley, T Fine, M Finn, LS Franzen, KY Freise, A Frey, R Fritschel, P Frolov, VV Fyffe, M Ganezer, KS Garofoli, J Giaime, JA Gillespie, A Goda, K Gonzalez, G Gossler, S Grandclement, P Grant, A Gray, C Gretarsson, AM Grimmett, D Grote, H Grunewald, S Guenther, M Gustafson, E Gustafson, R Hamilton, WO Hammond, M Hanson, J Hardham, C Harms, J Harry, G Hartunian, A Heefner, J Hefetz, Y Heinzel, G Heng, IS Hennessy, M Hepler, N Heptonstall, A Heurs, M Hewitson, M Hild, S Hindman, N Hoang, P Hough, J Hrynevych, M Hua, W Ito, M Itoh, Y Ivanov, A Jennrich, O Johnson, B Johnson, WW Johnston, WR Jones, DI Jones, L Jungwirth, D Kalogera, V Katsavounidis, E Kawabe, K Kawamura, S Kells, W Kern, J Khan, A Killbourn, S Killow, CJ Kim, C King, C King, P Klimenko, S Koranda, S Kotter, K Kovalik, J Kozak, D Krishnan, B Landry, M Langdale, J Lantz, B Lawrence, R Lazzarini, A Lei, M Leonor, I Libbrecht, K Libson, A Lindquist, P Liu, S Logan, J Lormand, M Lubinski, M Luck, H Lyons, TT Machenschalk, B MacInnis, M Mageswaran, M Mailand, K Majid, W Malec, M Mann, F Marin, A Marka, S Maros, E Mason, J Mason, K Matherny, O Matone, L Mavalvala, N McCarthy, R McClelland, DE McHugh, M McNabb, JWC Mendell, G Mercer, RA Meshkov, S Messaritaki, E Messenger, C Mitrofanov, VP Mitselmakher, G Mittleman, R Miyakawa, O Miyoki, S Mohanty, S Moreno, G Mossavi, K Mueller, G Mukherjee, S Murray, P Myers, J Nagano, S Nash, T Nayak, R Newton, G Nocera, F Noel, JS Nutzman, P Olson, T O'Reilly, B Ottaway, DJ Ottewill, A Ouimette, D Overmier, H Owen, BJ Pan, Y Papa, MA Parameshwaraiah, V Parameswaran, A Parameswariah, C Pedraza, M Penn, S Pitkin, M Plissi, M Prix, R Quetschke, V Raab, F Radkins, H Rahkola, R Rakhmanov, M Rao, SR Rawlins, K Ray-Majumder, S Re, V Redding, D Regehr, MW Regimbau, T Reid, S Reilly, KT Reithmaier, K Reitze, DH Richman, S Riesen, R Riles, K Rivera, B Rizzi, A Robertson, DI Robertson, NA Robison, L Roddy, S Rollins, J Romano, JD Romie, J Rong, H Rose, D Rotthoff, E Rowan, S Rudiger, A Russell, P Ryan, K Salzman, I Sandberg, V Sanders, GH Sannibale, V Sathyaprakash, B Saulson, PR Savage, R Sazonov, A Schilling, R Schlaufman, K Schmidt, V Schnabel, R Schofield, R Schutz, BF Schwinberg, P Scott, SM Seader, SE Searle, AC Sears, B Seel, S Seifert, F Sengupta, AS Shapiro, CA Shawhan, P Shoemaker, DH Shu, QZ Sibley, A Siemens, X Sievers, L Sigg, D Sintes, AM Smith, JR Smith, M Smith, MR Sneddon, PH Spero, R Stapfer, G Steussy, D Strain, KA Strom, D Stuver, A Summerscales, T Sumner, MC Sutton, PJ Sylvestre, J Takamori, A Tanner, DB Tariq, H Taylor, I Taylor, R Taylor, R Thorne, KA Thorne, KS Tibbits, M Tilav, S Tinto, M Tokmakov, KV Torres, C Torrie, C Traylor, G Tyler, W Ugolini, D Ungarelli, C Vallisneri, M van Putten, M Vass, S Vecchio, A Veitch, J Vorvick, C Vyachanin, SP Wallace, L Walther, H Ward, H Ware, B Watts, K Webber, D Weidner, A Weiland, U Weinstein, A Weiss, R Welling, H Wen, L Wen, S Whelan, JT Whitcomb, SE Whiting, BF Wiley, S Wilkinson, C Willems, PA Williams, PR Williams, R Willke, B Wilson, A Winjum, BJ Winkler, W Wise, S Wiseman, AG Woan, G Woods, D Wooley, R Worden, J Wu, W Yakushin, I Yamamoto, H Yoshida, S Zaleski, KD Zanolin, M Zawischa, I Zhang, L Zhu, R Zotov, N Zucker, M Zweizig, J CA LIGO Sci Collaboration TI Search for gravitational waves from primordial black hole binary coalescences in the galactic halo SO PHYSICAL REVIEW D LA English DT Article ID INFLATIONARY COSMOLOGY; MACHO PROJECT AB We use data from the second science run of the LIGO gravitational-wave detectors to search for the gravitational waves from primordial black hole binary coalescence with component masses in the range 0.2-1.0M. The analysis requires a signal to be found in the data from both LIGO observatories, according to a set of coincidence criteria. No inspiral signals were found. Assuming a spherical halo with core radius 5 kpc extending to 50 kpc containing nonspinning black holes with masses in the range 0.2-1.0M, we place an observational upper limit on the rate of primordial black hole coalescence of 63 per year per Milky Way halo (MWH) with 90% confidence. C1 CALTECH, LIGO, Pasadena, CA 91125 USA. Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-14476 Golm, Germany. Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-30167 Hannover, Germany. Australian Natl Univ, Canberra, ACT 0200, Australia. Calif State Univ Dominguez Hills, Carson, CA 90747 USA. CALTECH, CaRT, Pasadena, CA 91125 USA. Univ Cardiff Wales, Cardiff CF2 3YB, Wales. Carleton Coll, Northfield, MN 55057 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Hobart & William Smith Coll, Geneva, NY 14456 USA. Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India. MIT, LIGO, Cambridge, MA 02139 USA. LIFO Hanford Observ, Richland, WA 99352 USA. LIFO Livingston Observ, Livingston, LA 70754 USA. Louisiana State Univ, Baton Rouge, LA 70803 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Loyola Univ, New Orleans, LA 70118 USA. Max Planck Inst Quantum Opt, D-85748 Garching, Germany. Moscow MV Lomonosov State Univ, Moscow 119992, Russia. NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. Natl Astron Observ Japan, Tokyo 1818588, Japan. Northwestern Univ, Evanston, IL 60208 USA. Salish Kootenai Coll, Pablo, MT 59855 USA. SE Louisiana Univ, Hammond, LA 70402 USA. Stanford Univ, Stanford, CA 94305 USA. Syracuse Univ, Syracuse, NY 13244 USA. Penn State Univ, University Pk, PA 16802 USA. Univ Texas Brownsville, Brownsville, TX 78520 USA. Texas Southmost Coll, Brownsville, TX 78520 USA. Trinity Univ, Austin, TX 78712 USA. Univ Hannover, D-30167 Hannover, Germany. Univ Illes Balears, E-07122 Palma de Mallorca, Spain. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Univ Florida, Gainesville, FL 32611 USA. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Univ Michigan, Ann Arbor, MI 48109 USA. Univ Oregon, Eugene, OR 97403 USA. Univ Rochester, Rochester, NY 14627 USA. Univ Wisconsin, Milwaukee, WI 53201 USA. Washington State Univ, Pullman, WA 99164 USA. HP Labs, Palo Alto, CA USA. CNRS, Inst Astrophys Paris, GReCO, F-75700 Paris, France. Columbia Univ, New York, NY 10027 USA. Univ Tokyo, Inst Cosm Ray Res, Tokyo, Japan. Univ Coll Dublin, Dublin, Ireland. IBM Canada Ltd, Markham, ON, Canada. CALTECH, Jet Prop Lab, Pasadena, CA USA. RP Abbott, B (reprint author), CALTECH, LIGO, Pasadena, CA 91125 USA. RI Frey, Raymond/E-2830-2016; Allen, Bruce/K-2327-2012; Chen, Yanbei/A-2604-2013; Barker, David/A-5671-2013; Pitkin, Matthew/I-3802-2013; Liu, Sheng/K-2815-2013; Vyatchanin, Sergey/J-2238-2012; van Putten, Maurice/F-5237-2011; Vecchio, Alberto/F-8310-2015; Ottaway, David/J-5908-2015; Ottewill, Adrian/A-1838-2016; Messaritaki, Eirini/D-7393-2016; Sigg, Daniel/I-4308-2015; Harms, Jan/J-4359-2012; Sylvestre, Julien/A-8610-2009; Beausoleil, Raymond/C-5076-2009; McClelland, David/E-6765-2010; Hild, Stefan/A-3864-2010; Casey, Morag/C-9703-2010; Rowan, Sheila/E-3032-2010; Strain, Kenneth/D-5236-2011; Raab, Frederick/E-2222-2011; Lueck, Harald/F-7100-2011; Freise, Andreas/F-8892-2011; Finn, Lee Samuel/A-3452-2009; Mitrofanov, Valery/D-8501-2012; Bilenko, Igor/D-5172-2012 OI Frey, Raymond/0000-0003-0341-2636; Allen, Bruce/0000-0003-4285-6256; Pitkin, Matthew/0000-0003-4548-526X; Vecchio, Alberto/0000-0002-6254-1617; Ottewill, Adrian/0000-0003-3293-8450; Sigg, Daniel/0000-0003-4606-6526; Sylvestre, Julien/0000-0001-8136-4348; McClelland, David/0000-0001-6210-5842; Strain, Kenneth/0000-0002-2066-5355; Lueck, Harald/0000-0001-9350-4846; Finn, Lee Samuel/0000-0002-3937-0688; NR 28 TC 8 Z9 8 U1 1 U2 3 PU AMERICAN 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 OCT PY 2005 VL 72 IS 8 AR 082002 DI 10.1103/PhysRevD.72.082002 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IX UT WOS:000232936700003 ER PT J AU Abbott, B Abbott, R Adhikari, R Ageev, A Allen, B Amin, R Anderson, SB Anderson, WG Araya, M Armandula, H Ashley, M Asiri, F Aufmuth, P Aulbert, C Babak, S Balasubramanian, R Ballmer, S Barish, BC Barker, C Barker, D Barnes, M Barr, B Barton, MA Bayer, K Beausoleil, R Belczynski, K Bennett, R Berukoff, SJ Betzwieser, J Bhawal, B Bilenko, IA Billingsley, G Black, E Blackburn, K Blackburn, L Bland, B Bochner, B Bogue, L Bork, R Bose, S Brady, PR Braginsky, VB Brau, JE Brown, DA Bullington, A Bunkowski, A Buonanno, A Burgess, R Busby, D Butler, WE Byer, RL Cadonati, L Cagnoli, G Camp, JB Cantley, CA Cardenas, L Carter, K Casey, MM Castiglione, J Chandler, A Chapsky, J Charlton, P Chatterji, S Chelkowski, S Chen, Y Chickarmane, V Chin, D Christensen, N Churches, D Cokelaer, T Colacino, C Coldwell, R Coles, M Cook, D Corbitt, T Coyne, D Creighton, JDE Creighton, TD Crooks, DRM Csatorday, P Cusack, BJ Cutler, C D'Ambrosio, E Danzmann, K Daw, E DeBra, D Delker, T Dergachev, V DeSalvo, R Dhurandhar, S Di Credico, A Diaz, M Ding, H Drever, RWP Dupuis, RJ Edlund, JA Ehrens, P Elliffe, EJ Etzel, T Evans, M Evans, T Fairhurst, S Fallnich, C Farnham, D Fejer, MM Findley, T Fine, M Finn, LS Franzen, KY Freise, A Frey, R Fritschel, P Frolov, VV Fyffe, M Ganezer, KS Garofoli, J Giaime, JA Gillespie, A Goda, K Gonzalez, G Gossler, S Grandclement, P Grant, A Gray, C Gretarsson, AM Grimmett, D Grote, H Grunewald, S Guenther, M Gustafson, E Gustafson, R Hamilton, WO Hammond, M Hanson, J Hardham, C Harms, J Harry, G Hartunian, A Heefner, J Hefetz, Y Heinzel, G Heng, IS Hennessy, M Hepler, N Heptonstall, A Heurs, M Hewitson, M Hild, S Hindman, N Hoang, P Hough, J Hrynevych, M Hua, W Ito, M Itoh, Y Ivanov, A Jennrich, O Johnson, B Johnson, WW Johnston, WR Jones, DI Jones, L Jungwirth, D Kalogera, V Katsavounidis, E Kawabe, K Kawamura, S Kells, W Kern, J Khan, A Killbourn, S Killow, CJ Kim, C King, C King, P Klimenko, S Koranda, S Kotter, K Kovalik, J Kozak, D Krishnan, B Landry, M Langdale, J Lantz, B Lawrence, R Lazzarini, A Lei, M Leonor, I Libbrecht, K Libson, A Lindquist, P Liu, S Logan, J Lormand, M Lubinski, M Luck, H Lyons, TT Machenschalk, B MacInnis, M Mageswaran, M Mailand, K Majid, W Malec, M Mann, F Marin, A Marka, S Maros, E Mason, J Mason, K Matherny, O Matone, L Mavalvala, N McCarthy, R McClelland, DE McHugh, M McNabb, JWC Mendell, G Mercer, RA Meshkov, S Messaritaki, E Messenger, C Mitrofanov, VP Mitselmakher, G Mittleman, R Miyakawa, O Miyoki, S Mohanty, S Moreno, G Mossavi, K Mueller, G Mukherjee, S Murray, P Myers, J Nagano, S Nash, T Nayak, R Newton, G Nocera, F Noel, JS Nutzman, P Olson, T O'Reilly, B Ottaway, DJ Ottewill, A Ouimette, D Overmier, H Owen, BJ Pan, Y Papa, MA Parameshwaraiah, V Parameswaran, A Parameswariah, C Pedraza, M Penn, S Pitkin, M Plissi, M Prix, R Quetschke, V Raab, F Radkins, H Rahkola, R Rakhmanov, M Rao, SR Rawlins, K Ray-Majumder, S Re, V Redding, D Regehr, MW Regimbau, T Reid, S Reilly, KT Reithmaier, K Reitze, DH Richman, S Riesen, R Riles, K Rivera, B Rizzi, A Robertson, DI Robertson, NA Robison, L Roddy, S Rollins, J Romano, JD Romie, J Rong, H Rose, D Rotthoff, E Rowan, S Rudiger, A Russell, P Ryan, K Salzman, I Sandberg, V Sanders, GH Sannibale, V Sathyaprakash, B Saulson, PR Savage, R Sazonov, A Schilling, R Schlaufman, K Schmidt, V Schnabel, R Schofield, R Schutz, BF Schwinberg, P Scott, SM Seader, SE Searle, AC Sears, B Seel, S Seifert, F Sengupta, AS Shapiro, CA Shawhan, P Shoemaker, DH Shu, QZ Sibley, A Siemens, X Sievers, L Sigg, D Sintes, AM Smith, JR Smith, M Smith, MR Sneddon, PH Spero, R Stapfer, G Steussy, D Strain, KA Strom, D Stuver, A Summerscales, T Sumner, MC Sutton, PJ Sylvestre, J Takamori, A Tanner, DB Tariq, H Taylor, I Taylor, R Taylor, R Thorne, KA Thorne, KS Tibbits, M Tilav, S Tinto, M Tokmakov, KV Torres, C Torrie, C Traylor, G Tyler, W Ugolini, D Ungarelli, C Vallisneri, M van Putten, M Vass, S Vecchio, A Veitch, J Vorvick, C Vyachanin, SP Wallace, L Walther, H Ward, H Ware, B Watts, K Webber, D Weidner, A Weiland, U Weinstein, A Weiss, R Welling, H Wen, L Wen, S Whelan, JT Whitcomb, SE Whiting, BF Wiley, S Wilkinson, C Willems, PA Williams, PR Williams, R Willke, B Wilson, A Winjum, BJ Winkler, W Wise, S Wiseman, AG Woan, G Woods, D Wooley, R Worden, J Wu, W Yakushin, I Yamamoto, H Yoshida, S Zaleski, KD Zanolin, M Zawischa, I Zhang, L Zhu, R Zotov, N Zucker, M Zweizig, J AF Abbott, B Abbott, R Adhikari, R Ageev, A Allen, B Amin, R Anderson, SB Anderson, WG Araya, M Armandula, H Ashley, M Asiri, F Aufmuth, P Aulbert, C Babak, S Balasubramanian, R Ballmer, S Barish, BC Barker, C Barker, D Barnes, M Barr, B Barton, MA Bayer, K Beausoleil, R Belczynski, K Bennett, R Berukoff, SJ Betzwieser, J Bhawal, B Bilenko, IA Billingsley, G Black, E Blackburn, K Blackburn, L Bland, B Bochner, B Bogue, L Bork, R Bose, S Brady, PR Braginsky, VB Brau, JE Brown, DA Bullington, A Bunkowski, A Buonanno, A Burgess, R Busby, D Butler, WE Byer, RL Cadonati, L Cagnoli, G Camp, JB Cantley, CA Cardenas, L Carter, K Casey, MM Castiglione, J Chandler, A Chapsky, J Charlton, P Chatterji, S Chelkowski, S Chen, Y Chickarmane, V Chin, D Christensen, N Churches, D Cokelaer, T Colacino, C Coldwell, R Coles, M Cook, D Corbitt, T Coyne, D Creighton, JDE Creighton, TD Crooks, DRM Csatorday, P Cusack, BJ Cutler, C D'Ambrosio, E Danzmann, K Daw, E DeBra, D Delker, T Dergachev, V DeSalvo, R Dhurandhar, S Di Credico, A Diaz, M Ding, H Drever, RWP Dupuis, RJ Edlund, JA Ehrens, P Elliffe, EJ Etzel, T Evans, M Evans, T Fairhurst, S Fallnich, C Farnham, D Fejer, MM Findley, T Fine, M Finn, LS Franzen, KY Freise, A Frey, R Fritschel, P Frolov, VV Fyffe, M Ganezer, KS Garofoli, J Giaime, JA Gillespie, A Goda, K Gonzalez, G Gossler, S Grandclement, P Grant, A Gray, C Gretarsson, AM Grimmett, D Grote, H Grunewald, S Guenther, M Gustafson, E Gustafson, R Hamilton, WO Hammond, M Hanson, J Hardham, C Harms, J Harry, G Hartunian, A Heefner, J Hefetz, Y Heinzel, G Heng, IS Hennessy, M Hepler, N Heptonstall, A Heurs, M Hewitson, M Hild, S Hindman, N Hoang, P Hough, J Hrynevych, M Hua, W Ito, M Itoh, Y Ivanov, A Jennrich, O Johnson, B Johnson, WW Johnston, WR Jones, DI Jones, L Jungwirth, D Kalogera, V Katsavounidis, E Kawabe, K Kawamura, S Kells, W Kern, J Khan, A Killbourn, S Killow, CJ Kim, C King, C King, P Klimenko, S Koranda, S Kotter, K Kovalik, J Kozak, D Krishnan, B Landry, M Langdale, J Lantz, B Lawrence, R Lazzarini, A Lei, M Leonor, I Libbrecht, K Libson, A Lindquist, P Liu, S Logan, J Lormand, M Lubinski, M Luck, H Lyons, TT Machenschalk, B MacInnis, M Mageswaran, M Mailand, K Majid, W Malec, M Mann, F Marin, A Marka, S Maros, E Mason, J Mason, K Matherny, O Matone, L Mavalvala, N McCarthy, R McClelland, DE McHugh, M McNabb, JWC Mendell, G Mercer, RA Meshkov, S Messaritaki, E Messenger, C Mitrofanov, VP Mitselmakher, G Mittleman, R Miyakawa, O Miyoki, S Mohanty, S Moreno, G Mossavi, K Mueller, G Mukherjee, S Murray, P Myers, J Nagano, S Nash, T Nayak, R Newton, G Nocera, F Noel, JS Nutzman, P Olson, T O'Reilly, B Ottaway, DJ Ottewill, A Ouimette, D Overmier, H Owen, BJ Pan, Y Papa, MA Parameshwaraiah, V Parameswaran, A Parameswariah, C Pedraza, M Penn, S Pitkin, M Plissi, M Prix, R Quetschke, V Raab, F Radkins, H Rahkola, R Rakhmanov, M Rao, SR Rawlins, K Ray-Majumder, S Re, V Redding, D Regehr, MW Regimbau, T Reid, S Reilly, KT Reithmaier, K Reitze, DH Richman, S Riesen, R Riles, K Rivera, B Rizzi, A Robertson, DI Robertson, NA Robison, L Roddy, S Rollins, J Romano, JD Romie, J Rong, H Rose, D Rotthoff, E Rowan, S Rudiger, A Russell, P Ryan, K Salzman, I Sandberg, V Sanders, GH Sannibale, V Sathyaprakash, B Saulson, PR Savage, R Sazonov, A Schilling, R Schlaufman, K Schmidt, V Schnabel, R Schofield, R Schutz, BF Schwinberg, P Scott, SM Seader, SE Searle, AC Sears, B Seel, S Seifert, F Sengupta, AS Shapiro, CA Shawhan, P Shoemaker, DH Shu, QZ Sibley, A Siemens, X Sievers, L Sigg, D Sintes, AM Smith, JR Smith, M Smith, MR Sneddon, PH Spero, R Stapfer, G Steussy, D Strain, KA Strom, D Stuver, A Summerscales, T Sumner, MC Sutton, PJ Sylvestre, J Takamori, A Tanner, DB Tariq, H Taylor, I Taylor, R Taylor, R Thorne, KA Thorne, KS Tibbits, M Tilav, S Tinto, M Tokmakov, KV Torres, C Torrie, C Traylor, G Tyler, W Ugolini, D Ungarelli, C Vallisneri, M van Putten, M Vass, S Vecchio, A Veitch, J Vorvick, C Vyachanin, SP Wallace, L Walther, H Ward, H Ware, B Watts, K Webber, D Weidner, A Weiland, U Weinstein, A Weiss, R Welling, H Wen, L Wen, S Whelan, JT Whitcomb, SE Whiting, BF Wiley, S Wilkinson, C Willems, PA Williams, PR Williams, R Willke, B Wilson, A Winjum, BJ Winkler, W Wise, S Wiseman, AG Woan, G Woods, D Wooley, R Worden, J Wu, W Yakushin, I Yamamoto, H Yoshida, S Zaleski, KD Zanolin, M Zawischa, I Zhang, L Zhu, R Zotov, N Zucker, M Zweizig, J CA LIGO Sci Collaboration TI Search for gravitational waves from galactic and extra-galactic binary neutron stars SO PHYSICAL REVIEW D LA English DT Article ID INSPIRALING COMPACT BINARIES; LIGO; TEMPLATES; EVENTS; RATES; DETECTORS; SYSTEMS; PULSARS; FORMS AB We use 373 hours (approximate to 15 days) of data from the second science run of the LIGO gravitational-wave detectors to search for signals from binary neutron star coalescences within a maximum distance of about 1.5 Mpc, a volume of space which includes the Andromeda Galaxy and other galaxies of the Local Group of galaxies. This analysis requires a signal to be found in data from detectors at the two LIGO sites, according to a set of coincidence criteria. The background (accidental coincidence rate) is determined from the data and is used to judge the significance of event candidates. No inspiral gravitational-wave events were identified in our search. Using a population model which includes the Local Group, we establish an upper limit of less than 47 inspiral events per year per Milky Way equivalent galaxy with 90% confidence for nonspinning binary neutron star systems with component masses between 1 and 3M. C1 CALTECH, LIGO, Pasadena, CA 91125 USA. Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-14476 Golm, Germany. Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-30167 Hannover, Germany. Australian Natl Univ, Canberra, ACT 0200, Australia. Calif State Univ Dominguez Hills, Carson, CA 90747 USA. CALTECH, CaRT, Pasadena, CA 91125 USA. Cardiff Univ, Cardiff CF2 3YB, Wales. Carleton Coll, Northfield, MN 55057 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Hobart & William Smith Coll, Geneva, NY 14456 USA. Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India. MIT, LIGO, Cambridge, MA 02139 USA. LIGO Hanford Observ, Richland, WA 99352 USA. LIGO Livingston Observ, Livingston, LA USA. Louisiana State Univ, Baton Rouge, LA 70803 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Loyola Univ, New Orleans, LA 70118 USA. Max Planck Inst Quantum Opt, D-85748 Garching, Germany. Moscow MV Lomonosov State Univ, Moscow 119992, Russia. NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. Natl Astron Observ Japan, Tokyo 1818588, Japan. Northwestern Univ, Evanston, IL 60208 USA. Salish Kootenai Coll, Pablo, MT 59855 USA. SE Louisiana Univ, Hammond, LA 70402 USA. Stanford Univ, Stanford, CA 94305 USA. Syracuse Univ, Syracuse, NY 13244 USA. Penn State Univ, University Pk, PA 16802 USA. Univ Texas Brownsville, Brownsville, TX 78520 USA. Texas Southmost Coll, Brownsville, TX 78520 USA. Trinity Univ, San Antonio, TX 78212 USA. Leibniz Univ Hannover, D-30167 Hannover, Germany. Univ Illes Balears, E-07122 Palma de Mallorca, Spain. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Univ Florida, Gainesville, FL 32611 USA. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Univ Michigan, Ann Arbor, MI 48109 USA. Univ Oregon, Eugene, OR 97403 USA. Univ Rochester, Rochester, NY 14627 USA. Univ Wisconsin, Milwaukee, WI 53201 USA. Washington State Univ, Pullman, WA 99164 USA. HP Labs, Palo Alto, CA USA. CNRS, Inst Astrophys Paris, GReCO, F-75700 Paris, France. Columbia Univ, New York, NY 10027 USA. Univ Tokyo, Inst Cosm Ray Res, Tokyo, Japan. Univ Coll Dublin, Dublin, Ireland. IBM Canada Ltd, Markham, ON, Canada. CALTECH, Jet Prop Lab, Pasadena, CA USA. RP Abbott, B (reprint author), CALTECH, LIGO, Pasadena, CA 91125 USA. RI Mitrofanov, Valery/D-8501-2012; Bilenko, Igor/D-5172-2012; Allen, Bruce/K-2327-2012; Chen, Yanbei/A-2604-2013; Barker, David/A-5671-2013; Pitkin, Matthew/I-3802-2013; Schutz, Bernard/B-1504-2010; Sylvestre, Julien/A-8610-2009; Liu, Sheng/K-2815-2013; Vyatchanin, Sergey/J-2238-2012; van Putten, Maurice/F-5237-2011; Finn, Lee Samuel/A-3452-2009; Casey, Morag/C-9703-2010; Raab, Frederick/E-2222-2011; Rowan, Sheila/E-3032-2010; Beausoleil, Raymond/C-5076-2009; McClelland, David/E-6765-2010; Kawabe, Keita/G-9840-2011; Lueck, Harald/F-7100-2011; Strain, Kenneth/D-5236-2011; Freise, Andreas/F-8892-2011; Hild, Stefan/A-3864-2010; Vecchio, Alberto/F-8310-2015; Agresti, Juri/G-8168-2012; Ottaway, David/J-5908-2015; Ottewill, Adrian/A-1838-2016; Messaritaki, Eirini/D-7393-2016; Sigg, Daniel/I-4308-2015; Harms, Jan/J-4359-2012; Frey, Raymond/E-2830-2016; OI Allen, Bruce/0000-0003-4285-6256; Pitkin, Matthew/0000-0003-4548-526X; Sylvestre, Julien/0000-0001-8136-4348; Finn, Lee Samuel/0000-0002-3937-0688; McClelland, David/0000-0001-6210-5842; Lueck, Harald/0000-0001-9350-4846; Strain, Kenneth/0000-0002-2066-5355; Vecchio, Alberto/0000-0002-6254-1617; Agresti, Juri/0000-0001-6119-2470; Ottewill, Adrian/0000-0003-3293-8450; Sigg, Daniel/0000-0003-4606-6526; Frey, Raymond/0000-0003-0341-2636; Fairhurst, Stephen/0000-0001-8480-1961; Taylor, Ian/0000-0001-5040-0772; Zweizig, John/0000-0002-1521-3397; Aulbert, Carsten/0000-0002-1481-8319; Tanner, David/0000-0003-1940-4710; Heurs, Michele/0000-0002-5577-2273; Messaritaki, Eirini/0000-0002-9917-4160; Freise, Andreas/0000-0001-6586-9901; Mitra, Sanjit/0000-0002-0800-4626; Tokmakov, Kirill/0000-0002-2808-6593; Whiting, Bernard F/0000-0002-8501-8669; Veitch, John/0000-0002-6508-0713; Papa, M.Alessandra/0000-0002-1007-5298 NR 39 TC 105 Z9 105 U1 2 U2 11 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 EI 1550-2368 J9 PHYS REV D JI Phys. Rev. D PD OCT PY 2005 VL 72 IS 8 AR 082001 DI 10.1103/PhysRevD.72.082001 PG 22 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IX UT WOS:000232936700002 ER PT J AU Acosta, D Affolder, T Albrow, MG Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Behari, S Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Bocci, A Bodek, A Bolla, G Bolshov, A Bortoletto, D Boudreau, J Bromberg, C Brubaker, E Budagov, J Budd, HS Burkett, K Busetto, G Byrum, KL Cabrera, S Campbell, M Carithers, W Carlsmith, D Castro, A Cauz, D Cerri, A Cerrito, L Chapman, J Chen, C Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Chu, ML Chung, JY Chung, WH Chung, YS Ciobanu, CI Clark, AG Coca, M Connolly, A Convery, M Conway, J Cordelli, M Cranshaw, J Culbertson, R Dagenhart, D D'Auria, S de Barbaro, P De Cecco, S Dell'Agnello, S Dell'Orso, M Demers, S Demortier, L Deninno, M De Pedis, D Derwent, PF Dionisi, C Dittmann, JR Dominguez, A Donati, S D'Onofrio, M Dorigo, T Eddy, N Erbacher, R Errede, D Errede, S Eusebi, R Farrington, S Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Flores-Castillo, LR Foster, GW Franklin, M Friedman, J Furic, I Gallinaro, M Garcia-Sciveres, M Garfinkel, AF Gay, C Gerdes, DW Gerstein, E Giagu, S Giannetti, P Giolo, K Giordani, M Giromini, P Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Goldstein, J Gomez, G Goncharov, M Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Gresele, A Grosso-Pilcher, C Guenther, M da Costa, JG Haber, C Hahn, SR Halkiadakis, E Handler, R Happacher, F Hara, K Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Hennecke, M Herndon, M Hill, C Hocker, A Hoffman, KD Hou, S Huffman, BT Hughes, R Huston, J Incandela, J Introzzi, G Iori, M Issever, C Ivanov, A Iwata, Y Iyutin, B James, E Jones, M Kamon, T Kang, J Unel, MK Kartal, S Kasha, H Kato, Y Kennedy, RD Kephart, R Kilminster, B Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, TH Kim, YK Kirby, M Kirsch, L Klimenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kroll, J Kruse, M Krutelyov, V Kuhlmann, SE Kuznetsova, N Laasanen, AT Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lannon, K Lath, A Latino, G LeCompte, T Le, Y Lee, J Lee, SW Leonardo, N Leone, S Lewis, JD Li, K Lin, CS Lindgren, M Liss, TM Litvintsev, DO Liu, T Lockyer, NS Loginov, A Loreti, M Lucchesi, D Lukens, P Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Manca, G Mariotti, M Martin, M Martin, A Martin, V Martinez, M Mazzanti, P McFarland, KS McIntyre, P Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, JS Miller, R Miscetti, S Mitselmakher, G Moggi, N Moore, R Moulik, T Mukherjee, A Mulhearn, M Muller, T Munar, A Murat, P Nachtman, J Nahn, S Nakano, I Napora, R Nelson, C Nelson, T Neu, C Neubauer, MS Newman-Holmes, C Niell, F Nigmanov, T Nodulman, L Oh, SH Oh, YD Ohsugi, T Okusawa, T Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Patrick, J Pauletta, G Paulini, M Pauly, T Paus, C Pellett, D Penzo, A Phillips, TJ Piacentino, G Piedra, J Pitts, KT Pompos, A Pondrom, L Pope, G Poukov, O Pratt, T Prokoshin, F Proudfoot, J Ptohos, F Punzi, G Rademacker, J Rakitine, A Ratnikov, F Ray, H Reichold, A Renton, P Rescigno, M Rimondi, F Ristori, L Robertson, WJ Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Ryan, D Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sarkar, S Savard, P Savoy-Navarro, A Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scribano, A Sedov, A Seidel, S Seiya, Y Semenov, A Semeria, F Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Sill, A Sinervo, P Slaughter, AJ Sliwa, K Snider, FD Snihur, R Spezziga, M Spiegel, L Spinella, F Spiropulu, M Stefanini, A Strologas, J Stuart, D Sukhanov, A Sumorok, K Suzuki, T Takashima, R Takikawa, K Tanaka, M Tecchio, M Teng, PK Terashi, K Tesarek, RJ Tether, S Thom, J Thompson, AS Thomson, E Tipton, P Tkaczyk, S Toback, D Tollefson, K Tonelli, D Tonnesmann, M Toyoda, H Trischuk, W Tseng, J Tsybychev, D Turini, N Ukegawa, F Unverhau, T Vaiciulis, T Varganov, A Vataga, E Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Wagner, RG Wagner, RL Wagner, W Wan, Z Wang, C Wang, MJ Wang, SM Ward, B Waschke, S Waters, D Watts, T Weber, M Wester, WC Whitehouse, B Wicklund, AB Wicklund, E Williams, HH Wilson, P Winer, BL Wolbers, S Wolter, M Worm, S Wu, X Wurthwein, F Yang, UK Yao, W Yeh, GP Yi, K Yoh, J Yoshida, T Yu, I Yu, S Yun, JC Zanello, L Zanetti, A Zetti, F Zucchelli, S AF Acosta, D Affolder, T Albrow, MG Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Barone, M Bauer, G Bedeschi, F Behari, S Belforte, S Bell, WH Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bishai, M Blair, RE Blocker, C Bloom, K Blumenfeld, B Bocci, A Bodek, A Bolla, G Bolshov, A Bortoletto, D Boudreau, J Bromberg, C Brubaker, E Budagov, J Budd, HS Burkett, K Busetto, G Byrum, KL Cabrera, S Campbell, M Carithers, W Carlsmith, D Castro, A Cauz, D Cerri, A Cerrito, L Chapman, J Chen, C Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Chu, ML Chung, JY Chung, WH Chung, YS Ciobanu, CI Clark, AG Coca, M Connolly, A Convery, M Conway, J Cordelli, M Cranshaw, J Culbertson, R Dagenhart, D D'Auria, S de Barbaro, P De Cecco, S Dell'Agnello, S Dell'Orso, M Demers, S Demortier, L Deninno, M De Pedis, D Derwent, PF Dionisi, C Dittmann, JR Dominguez, A Donati, S D'Onofrio, M Dorigo, T Eddy, N Erbacher, R Errede, D Errede, S Eusebi, R Farrington, S Feild, RG Fernandez, JP Ferretti, C Field, RD Fiori, I Flaugher, B Flores-Castillo, LR Foster, GW Franklin, M Friedman, J Furic, I Gallinaro, M Garcia-Sciveres, M Garfinkel, AF Gay, C Gerdes, DW Gerstein, E Giagu, S Giannetti, P Giolo, K Giordani, M Giromini, P Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Goldstein, J Gomez, G Goncharov, M Gorelov, I Goshaw, AT Gotra, Y Goulianos, K Gresele, A Grosso-Pilcher, C Guenther, M da Costa, JG Haber, C Hahn, SR Halkiadakis, E Handler, R Happacher, F Hara, K Harris, RM Hartmann, F Hatakeyama, K Hauser, J Heinrich, J Hennecke, M Herndon, M Hill, C Hocker, A Hoffman, KD Hou, S Huffman, BT Hughes, R Huston, J Incandela, J Introzzi, G Iori, M Issever, C Ivanov, A Iwata, Y Iyutin, B James, E Jones, M Kamon, T Kang, J Unel, MK Kartal, S Kasha, H Kato, Y Kennedy, RD Kephart, R Kilminster, B Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, TH Kim, YK Kirby, M Kirsch, L Klimenko, S Koehn, P Kondo, K Konigsberg, J Korn, A Korytov, A Kroll, J Kruse, M Krutelyov, V Kuhlmann, SE Kuznetsova, N Laasanen, AT Lami, S Lammel, S Lancaster, J Lancaster, M Lander, R Lannon, K Lath, A Latino, G LeCompte, T Le, Y Lee, J Lee, SW Leonardo, N Leone, S Lewis, JD Li, K Lin, CS Lindgren, M Liss, TM Litvintsev, DO Liu, T Lockyer, NS Loginov, A Loreti, M Lucchesi, D Lukens, P Lyons, L Lys, J Madrak, R Maeshima, K Maksimovic, P Malferrari, L Mangano, M Manca, G Mariotti, M Martin, M Martin, A Martin, V Martinez, M Mazzanti, P McFarland, KS McIntyre, P Menguzzato, M Menzione, A Merkel, P Mesropian, C Meyer, A Miao, T Miller, JS Miller, R Miscetti, S Mitselmakher, G Moggi, N Moore, R Moulik, T Mukherjee, A Mulhearn, M Muller, T Munar, A Murat, P Nachtman, J Nahn, S Nakano, I Napora, R Nelson, C Nelson, T Neu, C Neubauer, MS Newman-Holmes, C Niell, F Nigmanov, T Nodulman, L Oh, SH Oh, YD Ohsugi, T Okusawa, T Orejudos, W Pagliarone, C Palmonari, F Paoletti, R Papadimitriou, V Patrick, J Pauletta, G Paulini, M Pauly, T Paus, C Pellett, D Penzo, A Phillips, TJ Piacentino, G Piedra, J Pitts, KT Pompos, A Pondrom, L Pope, G Poukov, O Pratt, T Prokoshin, F Proudfoot, J Ptohos, F Punzi, G Rademacker, J Rakitine, A Ratnikov, F Ray, H Reichold, A Renton, P Rescigno, M Rimondi, F Ristori, L Robertson, WJ Rodrigo, T Rolli, S Rosenson, L Roser, R Rossin, R Rott, C Roy, A Ruiz, A Ryan, D Safonov, A St Denis, R Sakumoto, WK Saltzberg, D Sanchez, C Sansoni, A Santi, L Sarkar, S Savard, P Savoy-Navarro, A Schlabach, P Schmidt, EE Schmidt, MP Schmitt, M Scodellaro, L Scribano, A Sedov, A Seidel, S Seiya, Y Semenov, A Semeria, F Shapiro, MD Shepard, PF Shibayama, T Shimojima, M Shochet, M Sidoti, A Sill, A Sinervo, P Slaughter, AJ Sliwa, K Snider, FD Snihur, R Spezziga, M Spiegel, L Spinella, F Spiropulu, M Stefanini, A Strologas, J Stuart, D Sukhanov, A Sumorok, K Suzuki, T Takashima, R Takikawa, K Tanaka, M Tecchio, M Teng, PK Terashi, K Tesarek, RJ Tether, S Thom, J Thompson, AS Thomson, E Tipton, P Tkaczyk, S Toback, D Tollefson, K Tonelli, D Tonnesmann, M Toyoda, H Trischuk, W Tseng, J Tsybychev, D Turini, N Ukegawa, F Unverhau, T Vaiciulis, T Varganov, A Vataga, E Vejcik, S Velev, G Veramendi, G Vidal, R Vila, I Vilar, R Volobouev, I von der Mey, M Wagner, RG Wagner, RL Wagner, W Wan, Z Wang, C Wang, MJ Wang, SM Ward, B Waschke, S Waters, D Watts, T Weber, M Wester, WC Whitehouse, B Wicklund, AB Wicklund, E Williams, HH Wilson, P Winer, BL Wolbers, S Wolter, M Worm, S Wu, X Wurthwein, F Yang, UK Yao, W Yeh, GP Yi, K Yoh, J Yoshida, T Yu, I Yu, S Yun, JC Zanello, L Zanetti, A Zetti, F Zucchelli, S CA CDF Collaboration TI Search for supersymmetric Higgs bosons in the di-tau decay mode in p(p)over-barcollisions at root s=1.8 TeV SO PHYSICAL REVIEW D LA English DT Article ID CENTRAL ELECTROMAGNETIC CALORIMETER; SILICON VERTEX DETECTOR; (P)OVER-BAR-P COLLISIONS; PARTICLE PHYSICS; STANDARD MODEL; CDF; MASS AB A search for the direct production of Higgs bosons in the di-tau decay mode is performed with 86.3 +/- 3.5 pb(-1) of data collected with the Collider Detector at Fermilab during the 1994-1995 data taking period of the Tevatron. We search for events where one tau decays to an electron plus neutrinos and the other tau decays hadronically. We perform a counting experiment and set limits on the cross section for supersymmetric Higgs boson production where tan beta is large and m(A) is small. For a benchmark parameter space point where m(A)(0)=100 GeV/c(2) and tan beta=50, we limit the production cross section multiplied by the branching ratio to be less than 77.9 pb at the 95% confidence level compared to the theoretically predicted value of 11.0 pb. This is the first search for Higgs bosons decaying to tau pairs at a hadron collider. C1 Univ Florida, Gainesville, FL 32611 USA. Acad Sinica, Inst Phys, Taipei 11529, Taiwan. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy. Brandeis Univ, Waltham, MA 02254 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Joint Inst Nucl Res, RU-141980 Dubna, Russia. Duke Univ, Durham, NC 27708 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Geneva, CH-1211 Geneva, Switzerland. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Harvard Univ, Cambridge, MA 02138 USA. Hiroshima Univ, Higashihiroshima 724, Japan. Univ Illinois, Urbana, IL 61801 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea. Seoul Natl Univ, Seoul 151742, South Korea. Sungkyunkwan Univ, Suwon 440746, South Korea. Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. UCL, London WC1E 6BT, England. MIT, Cambridge, MA 02139 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Inst Theoret & Expt Phys, Moscow 117259, Russia. Univ New Mexico, Albuquerque, NM 87131 USA. Northwestern Univ, Evanston, IL 60208 USA. Ohio State Univ, Columbus, OH 43210 USA. Osaka City Univ, Osaka 588, Japan. Univ Oxford, Oxford OX1 3RH, England. Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. Univ Penn, Philadelphia, PA 19104 USA. Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy. Scuola Normale Super Pisa, I-56100 Pisa, Italy. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Purdue Univ, W Lafayette, IN 47907 USA. Univ Rochester, Rochester, NY 14627 USA. Rockefeller Univ, New York, NY 10021 USA. Univ Roma La Sapienza, Inst Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy. Rutgers State Univ, Piscataway, NJ 08855 USA. Texas A&M Univ, College Stn, TX 77843 USA. Texas Tech Univ, Lubbock, TX 79409 USA. Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada. Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy. Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. Tufts Univ, Medford, MA 02155 USA. Waseda Univ, Tokyo 169, Japan. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06520 USA. RP Univ Florida, Gainesville, FL 32611 USA. RI Paulini, Manfred/N-7794-2014; vilar, rocio/P-8480-2014; Cabrera Urban, Susana/H-1376-2015; Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012; Leonardo, Nuno/M-6940-2016; Lancaster, Mark/C-1693-2008; Connolly, Amy/J-3958-2013; Kim, Soo-Bong/B-7061-2014; Scodellaro, Luca/K-9091-2014; Ruiz, Alberto/E-4473-2011; De Cecco, Sandro/B-1016-2012; Wolter, Marcin/A-7412-2012; St.Denis, Richard/C-8997-2012; Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012; manca, giulia/I-9264-2012; Punzi, Giovanni/J-4947-2012; Ivanov, Andrew/A-7982-2013 OI Paulini, Manfred/0000-0002-6714-5787; Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399; Leonardo, Nuno/0000-0002-9746-4594; Scodellaro, Luca/0000-0002-4974-8330; Ruiz, Alberto/0000-0002-3639-0368; Chiarelli, Giorgio/0000-0001-9851-4816; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Ivanov, Andrew/0000-0002-9270-5643 NR 35 TC 8 Z9 8 U1 1 U2 4 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 OCT PY 2005 VL 72 IS 7 AR 072004 DI 10.1103/PhysRevD.72.072004 PG 15 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300012 ER PT J AU Apollinari, G Barone, M Fiori, I Giromini, P Happacher, F Miscetti, S Parri, A Ptohos, F AF Apollinari, G Barone, M Fiori, I Giromini, P Happacher, F Miscetti, S Parri, A Ptohos, F TI Study of sequential semileptonic decays of b hadrons produced at the Fermilab Tevatron SO PHYSICAL REVIEW D LA English DT Article ID ROOT S=1.8 TEV; P(P)OVER-BAR COLLISIONS; CROSS-SECTIONS; J/PSI AB We present a study of rates and kinematical properties of lepton pairs contained in central jets with transverse energy E-T>= 15 GeV that are produced at the Fermilab Tevatron collider. We compare the data to a QCD prediction based on the QQ Monte Carlo generator programs. We find that the data are poorly described by the simulation, in which sequential semileptonic decays of single b quarks (b -> lcX with c -> lsX) are the major source of such lepton pairs. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy. Scuola Normale Super Pisa, I-56100 Pisa, Italy. RP Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. OI Ptochos, Fotios/0000-0002-3432-3452 NR 21 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 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD OCT PY 2005 VL 72 IS 7 AR 072002 DI 10.1103/PhysRevD.72.072002 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300010 ER PT J AU Arvanitaki, A Davis, C Graham, PW Pierce, A Wacker, JG AF Arvanitaki, A Davis, C Graham, PW Pierce, A Wacker, JG TI Limits on split supersymmetry from gluino cosmology SO PHYSICAL REVIEW D LA English DT Article ID STABLE PARTICLES; EARLY UNIVERSE; RELIC PARTICLES; CONSTRAINTS; ABUNDANCES; SEARCH AB An upper limit on the masses of scalar superpartners in split supersymmetry is found by considering cosmological constraints on long-lived gluinos. Over most of parameter space, the most stringent constraint comes from big bang nucleosynthesis. A TeV-mass gluino must have a lifetime of less than 100 seconds to avoid altering the abundances of D and Li-6. This sets an upper limit on the supersymmetry breaking scale m(S) of 10(9) GeV. C1 Stanford Univ, Inst Theoret Phys, Stanford, CA 94305 USA. Stanford Linear Accelerator Ctr, Theory Grp, Menlo Pk, CA 94025 USA. RP Arvanitaki, A (reprint author), Stanford Univ, Inst Theoret Phys, Stanford, CA 94305 USA. OI Graham, Peter/0000-0002-1600-1601 NR 32 TC 56 Z9 56 U1 0 U2 0 PU AMERICAN 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 OCT PY 2005 VL 72 IS 7 AR 075011 DI 10.1103/PhysRevD.72.075011 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300069 ER PT J AU Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Lo Vetere, M Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Vazquez, WP Charles, MJ Mader, WF Mallik, U Mohapatra, AK Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Le Diberder, F Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Di Lodovico, F Menges, W Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Edgar, CL Hodgkinson, MC Kelly, MP Lafferty, GD Naisbit, MT Williams, JC Chen, C Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Li, X Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D van Bakel, N Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Lo Vetere, M Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Vazquez, WP Charles, MJ Mader, WF Mallik, U Mohapatra, AK Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Le Diberder, F Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Di Lodovico, F Menges, W Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Edgar, CL Hodgkinson, MC Kelly, MP Lafferty, GD Naisbit, MT Williams, JC Chen, C Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Li, X Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D van Bakel, N Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H CA BaBar Collaboration TI Measurement of CP observables for the decays B-+/-->(DCPK)-K-0*(+/-) SO PHYSICAL REVIEW D LA English DT Article ID VIOLATION; GAMMA AB Using a sample of 232x10(6) Upsilon(4S)-> B (B) over bar events collected with the BABAR detector at the PEP-II B Factory in 1999-2004, we study B-->(DK*)-K-0(892)(-) decays where K*--> K-S(0)pi(-) and D-0 -> K-pi(+), K-pi(+)pi(0), K-pi(+)pi(+)pi(-) (non-CP final states); K+K-, pi(+)pi(-) (CP+ eigenstates); K-S(0)pi(0), K-S(0)phi, and K-S(0)omega (CP- eigenstates). We measure four observables that are sensitive to the angle gamma of the CKM unitarity triangle; the partial-rate charge asymmetries A(CP +/-) and the ratios of the B-decay branching fraction in CP +/- and non-CP decays R-CP +/-: A(CP+)=-0.08 +/- 0.19(stat)+/- 0.08(syst), A(CP-)=-0.26 +/- 0.40(stat)+/- 0.12(syst), RCP+=1.96 +/- 0.40(stat)+/- 0.11(syst), and RCP-=0.65 +/- 0.26(stat)+/- 0.08(syst). C1 Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain. Univ Bari, Dipartimento Fis, I-70126 Bari, Italy. Univ Bari, Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. Brunel Univ, Uxbridge UB8 3PH, Middx, England. Budker Inst Nucl Phys, Novosibirsk 630090, Russia. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. CALTECH, Pasadena, CA 91125 USA. Univ Cincinnati, Cincinnati, OH 45221 USA. Univ Colorado, Boulder, CO 80309 USA. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, LLR, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy. Univ Ferrara, Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. 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Univ Pisa, Dipartimento Fis, Scuola Normale Super Pisa, I-56127 Pisa, Italy. Ist Nazl Fis Nucl, I-56127 Pisa, Italy. Prairie View A&M Univ, Prairie View, TX 77446 USA. Princeton Univ, Princeton, NJ 08544 USA. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Univ Roma La Sapienza, Ist Nazl Fis Nucl, I-00185 Rome, Italy. Univ Rostock, D-18051 Rostock, Germany. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France. Univ S Carolina, Columbia, SC 29208 USA. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Stanford Univ, Stanford, CA 94305 USA. SUNY Albany, Albany, NY 12222 USA. Univ Tennessee, Knoxville, TN 37996 USA. Univ Texas, Austin, TX 78712 USA. Univ Texas, Richardson, TX 75083 USA. Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy. Univ Turin, Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. Univ Trieste, Ist Nazl Fis Nucl, I-34127 Trieste, Italy. Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. Univ Basilicata, I-85100 Potenza, Italy. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. RP Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. RI 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; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo, Sergio/J-3957-2015; M, Saleem/B-9137-2013; Lusiani, Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Negrini, Matteo/C-8906-2014; Luppi, Eleonora/A-4902-2015; Monge, Maria Roberta/G-9127-2012; crosetti, nanni/H-3040-2011; Saeed, Mohammad Alam/J-7455-2012; Oyanguren, Arantza/K-6454-2014; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Lista, Luca/C-5719-2008; Cavallo, Nicola/F-8913-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; Neri, Nicola/G-3991-2012; Rotondo, Marcello/I-6043-2012; Forti, Francesco/H-3035-2011; Sarti, Alessio/I-2833-2012; de Groot, Nicolo/A-2675-2009; Peters, Klaus/C-2728-2008; Bellini, Fabio/D-1055-2009; Roe, Natalie/A-8798-2012 OI 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; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288; Negrini, Matteo/0000-0003-0101-6963; Luppi, Eleonora/0000-0002-1072-5633; Monge, Maria Roberta/0000-0003-1633-3195; Saeed, Mohammad Alam/0000-0002-3529-9255; Oyanguren, Arantza/0000-0002-8240-7300; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Neri, Nicola/0000-0002-6106-3756; Rotondo, Marcello/0000-0001-5704-6163; Forti, Francesco/0000-0001-6535-7965; Sarti, Alessio/0000-0001-5419-7951; Peters, Klaus/0000-0001-7133-0662; Bellini, Fabio/0000-0002-2936-660X; NR 21 TC 126 Z9 126 U1 0 U2 7 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 OCT PY 2005 VL 72 IS 7 AR 071103 DI 10.1103/PhysRevD.72.071103 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300003 ER PT J AU Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Lo Vetere, M Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Vazquez, WP Charles, MJ Mader, WF Mallik, U Mohapatra, AK Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Le Diberder, F Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Di Lodovico, F Menges, W Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Edgar, CL Hodgkinson, MC Kelly, MP Lafferty, GD Naisbit, MT Williams, JC Chen, C Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Li, X Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T Groot, ND Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D van Bakel, N Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Zeng, Q Altenburg, D Feltresi, E Hauke, A Spaan, B Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Lo Vetere, M Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Wu, J Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Vazquez, WP Charles, MJ Mader, WF Mallik, U Mohapatra, AK Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Le Diberder, F Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Di Lodovico, F Menges, W Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Edgar, CL Hodgkinson, MC Kelly, MP Lafferty, GD Naisbit, MT Williams, JC Chen, C Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Li, X Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T Groot, ND Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D van Bakel, N Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H CA BaBar Collaboration TI Study of b -> c interference in the decay B-->[K+pi(-)](D)K*(-) SO PHYSICAL REVIEW D LA English DT Article ID CP-VIOLATION; GAMMA AB Using a sample of 232x10(6) Upsilon(4S)-> B (B) over bar events collected with the BABAR detector at the PEP-II B factory we study the decay B-->[K+pi(-)](D)K*- where the K+pi(-) is either from a Cabibbo-favored (D) over bar (0) decay or doubly-suppressed D-0 decay. We measure two observables that are sensitive to the Cabibbo-Kobayashi-Maskawa angle gamma; the ratio R of the charge-averaged branching fractions for the suppressed and favored decays; and the charge asymmetry A of the suppressed decays: R=0.046 +/- 0.031(stat)+/- 0.008(syst), A=-0.22 +/- 0.61(stat)+/- 0.17(syst). C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain. Univ Bari, Dipartimento Fis, I-70126 Bari, Italy. Univ Bari, Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. Brunel Univ, Uxbridge UB8 3PH, Middx, England. Budker Inst Nucl Phys, Novosibirsk 630090, Russia. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. CALTECH, Los Angeles, CA 90025 USA. Univ Cincinnati, Cincinnati, OH 45221 USA. Univ Colorado, Boulder, CO 80309 USA. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, LLR, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy. Univ Ferrara, Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. 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RI Lusiani, Alberto/A-3329-2016; 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; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo, Sergio/J-3957-2015; Lusiani, Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Peters, Klaus/C-2728-2008; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Roe, Natalie/A-8798-2012; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; M, Saleem/B-9137-2013; Cavallo, Nicola/F-8913-2012; Saeed, Mohammad Alam/J-7455-2012; Negrini, Matteo/C-8906-2014 OI Lusiani, Alberto/0000-0002-6876-3288; 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; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Peters, Klaus/0000-0001-7133-0662; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963 NR 17 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 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD OCT PY 2005 VL 72 IS 7 AR 071104 DI 10.1103/PhysRevD.72.071104 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300004 ER PT J AU Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA 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Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Strube, J Torrence, E Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D Bakel, N Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H CA BaBar Collaboration TI Dalitz-plot analysis of the decays B-+/--> K +/-pi(-/+)pi(+/-) SO PHYSICAL REVIEW D LA English DT Article ID KKBAR SYSTEMS; ISOBAR MODEL; SCATTERING; FORMALISM; SIGMA; GEV/C; PI AB We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K-+/-pi(-/+)pi(+/-). Using a sample of 226.0 +/- 2.5 million B (B) over bar pairs collected by the BABAR detector, we measure the magnitudes and phases of the intermediate resonant and nonresonant amplitudes for both charge-conjugate decays. We present measurements of the corresponding branching fractions and their charge asymmetries that supersede those of previous BABAR analyses. We find the charge asymmetries to be consistent with zero. C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain. Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. Univ Bari, Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Univ Calif Berkeley, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. 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RI Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Roe, Natalie/A-8798-2012; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; Cavallo, Nicola/F-8913-2012; Saeed, Mohammad Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo, Sergio/J-3957-2015; Lusiani, Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; 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 OI Peters, Klaus/0000-0001-7133-0662; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288; 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 NR 33 TC 89 Z9 89 U1 0 U2 5 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. 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Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Strube, J Su, D Sullivan, MK Suzuki, K Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Saleem, M Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Poropat, P Vitale, L Vuagnin, G Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, J Wu, SL Yu, Z Greene, MG Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Borgland, AW Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Kelly, MP Cuhadar-Donszelmann, T Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, 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Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, J Wu, SL Yu, Z Greene, MG Neal, H TI Study of the tau(-)-> 3h(-)2h(+)nu(tau) decay SO PHYSICAL REVIEW D LA English DT Article ID PHYSICS AB The branching fraction of the tau(-)-> 3h(-)2h(+)nu(tau) decay (h=pi,K) is measured with the BABAR detector to be (8.56 +/- 0.05 +/- 0.42)x10(-4), where the first error is statistical and the second systematic. The observed structure of this decay is significantly different from the phase space prediction, with the rho resonance playing a strong role. The decay tau(-)-> f(1)(1285)pi(-)nu(tau), with the f(1)(1285) meson decaying to four charged pions, is observed and the branching fraction is measured to be (3.9 +/- 0.7 +/- 0.5)x10(-4). C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain. Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Univ Calif Berkeley, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. Brunel Univ, Uxbridge UB8 3PH, Middx, England. 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RI Lusiani, Alberto/A-3329-2016; 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; Peters, Klaus/C-2728-2008; Cavallo, Nicola/F-8913-2012; Saeed, Mohammad Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; de Groot, Nicolo/A-2675-2009; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Roe, Natalie/A-8798-2012; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo, Sergio/J-3957-2015; Lusiani, Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016 OI Lusiani, Alberto/0000-0002-6876-3288; 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; Peters, Klaus/0000-0001-7133-0662; Saeed, Mohammad Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240 NR 11 TC 13 Z9 13 U1 0 U2 4 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. 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Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Paick, K Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T Groot, ND Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Strube, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Saleem, M Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Poropat, P Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, J Wu, SL Yu, Z Greene, MG Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Borgland, AW Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Kelly, MP Cuhadar-Donszelmann, T Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Eschrich, I Kirkby, D Lankford, AJ Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Lu, A Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Zeng, Q Feltresi, E Hauke, A Spaan, B Altenburg, D Brandt, T Brose, J Dickopp, M Klose, V Lacker, HM Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Vetere, ML Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Bailey, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Flack, RL Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Charles, MJ Mader, WF Mallik, U Mohapatra, AK Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Diberder, FL Lepeltier, V Lutz, AM Oyanguren, A Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Coleman, JP Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Schofield, KC Touramanis, C Cormack, CM Di Lodovico, F Sacco, R Brown, CL Cowan, G Flaecher, HU Green, MG Hopkins, DA Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Hodgkinson, MC Lafferty, GD Naisbit, MT Williams, JC Chen, C Farbin, A Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Lillard, V Roberts, DA Simi, G Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Li, X Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Torrence, E Colecchia, F Dorigo, A Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pacetti, S Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Paick, K Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Schroder, H Wagner, G Waldi, R Adye, T Groot, ND Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G de Monchenault, GH Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Strube, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Saleem, M Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Poropat, P Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, J Wu, SL Yu, Z Greene, MG Neal, H CA BaBar Collaboration TI Measurement of the branching fraction and decay rate asymmetry of B--> D-pi(+)pi(-)pi K-0(-) SO PHYSICAL REVIEW D LA English DT Article AB We report the observation of the decay B--> D-pi(+)pi(-)pi K-0(-), where D-pi(+)pi(-)pi(0) indicates a neutral D meson detected in the final state pi(+)pi(-)pi(0), excluding K-S(0)pi(0). This doubly Cabibbo-suppressed decay chain can be used to measure the CKM phase gamma. Using about 229x10(6) e(+)e(-)-> B (B) over bar events recorded by the BABAR experiment at the PEP-II e(+)e(-) storage ring, we measure the branching fraction B(B--> D-pi(+)pi(-)pi K-0(-))=(5.5 +/- 1.0(stat.)+/- 0.7(syst.))x10(-6) and the decay rate asymmetry A(B--> D-pi(+)pi(-)pi K-0(-))=-0.02 +/- 0.16(stat.)+/- 0.03(syst.) for the full decay chain. C1 Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain. Univ Bari, Dipartimento Fis, I-70126 Bari, Italy. Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. Brunel Univ, Uxbridge UB8 3PH, Middx, England. Budker Inst Nucl Phys, Novosibirsk 630090, Russia. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. CALTECH, Pasadena, CA 91125 USA. Univ Cincinnati, Cincinnati, OH 45221 USA. Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. Univ Colorado, Boulder, CO 80309 USA. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, LLR, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Harvard Univ, Cambridge, MA 02138 USA. Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany. Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England. Univ Iowa, Iowa City, IA 52242 USA. Iowa State Univ, Ames, IA 50011 USA. Lab Accelerateur Lineaire, F-91898 Orsay, France. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Liverpool, Liverpool L69 72E, Merseyside, England. Univ London, Queen Mary, London E1 4NS, England. Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England. Univ Louisville, Louisville, KY 40292 USA. Univ Manchester, Manchester M13 9PL, Lancs, England. Univ Maryland, College Pk, MD 20742 USA. Univ Massachusetts, Amherst, MA 01003 USA. MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. McGill Univ, Montreal, PQ H3A 2T8, Canada. Univ Milan, Dipartimento Fis, I-20133 Milan, Italy. Ist Nazl Fis Nucl, I-20133 Milan, Italy. Univ Mississippi, University, MS 38677 USA. Univ Montreal, Lab Rene JA Levesque, Montreal, PQ H3C 3J7, Canada. Mt Holyoke Coll, S Hadley, MA 01075 USA. Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy. Ist Nazl Fis Nucl, I-80126 Naples, Italy. Natl Inst Nucl Phys & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands. Univ Notre Dame, Notre Dame, IN 46556 USA. Ohio State Univ, Columbus, OH 43210 USA. Univ Oregon, Eugene, OR 97403 USA. Univ Padua, Dipartimento Fis, I-35131 Padua, Italy. Ist Nazl Fis Nucl, I-35131 Padua, Italy. Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Paris 07, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Penn, Philadelphia, PA 19104 USA. Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. Ist Nazl Fis Nucl, I-06100 Perugia, Italy. Univ Pisa, Dipartimento Fis, Scuola Normale Super Pisa, I-56127 Pisa, Italy. Ist Nazl Fis Nucl, I-56127 Pisa, Italy. Prairie View A&M Univ, Prairie View, TX 77446 USA. Princeton Univ, Princeton, NJ 08544 USA. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Ist Nazl Fis Nucl, I-00185 Rome, Italy. Univ Rostock, D-18051 Rostock, Germany. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France. Univ S Carolina, Columbia, SC 29208 USA. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Stanford Univ, Stanford, CA 94305 USA. SUNY Albany, Albany, NY 12222 USA. Univ Tennessee, Knoxville, TN 37996 USA. Univ Texas, Austin, TX 78712 USA. Univ Texas, Richardson, TX 75083 USA. Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. Ist Nazl Fis Nucl, I-34127 Trieste, Italy. Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. Univ Basilicata, I-85100 Potenza, Italy. RP Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France. RI Negrini, Matteo/C-8906-2014; Monge, Maria Roberta/G-9127-2012; Peters, Klaus/C-2728-2008; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; M, Saleem/B-9137-2013; Cavallo, Nicola/F-8913-2012; Saeed, Mohammad Alam/J-7455-2012; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo, Sergio/J-3957-2015; Lusiani, Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; 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 OI Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195; Peters, Klaus/0000-0001-7133-0662; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Oyanguren, Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288; 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 NR 13 TC 3 Z9 3 U1 0 U2 5 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 OCT PY 2005 VL 72 IS 7 AR 071102 DI 10.1103/PhysRevD.72.071102 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300002 ER PT J AU Auerbach, LB Burman, RL Caldwell, DO Church, ED Cochran, AK Donahue, JB Fazely, AR Garvey, GT Gunasingha, R Imlay, RL Katori, T Louis, WC McIlhany, KL Metcalf, WJ Mills, GB Sandberg, VD Smith, D Stancu, I Strossman, WH Tayloe, R Sung, M Vernon, W White, DH Yellin, S AF Auerbach, LB Burman, RL Caldwell, DO Church, ED Cochran, AK Donahue, JB Fazely, AR Garvey, GT Gunasingha, R Imlay, RL Katori, T Louis, WC McIlhany, KL Metcalf, WJ Mills, GB Sandberg, VD Smith, D Stancu, I Strossman, WH Tayloe, R Sung, M Vernon, W White, DH Yellin, S CA LSND Collaboration TI Tests of Lorentz violation in (nu)over-bar(mu) -> (nu)over-bar(e) oscillations SO PHYSICAL REVIEW D LA English DT Article ID SOLAR-NEUTRINO OBSERVATIONS; CPT VIOLATION; DETECTOR AB A recently developed standard-model extension (SME) formalism for neutrino oscillations that includes Lorentz and CPT violation is used to analyze the sidereal time variation of the neutrino event excess measured by the liquid scintillator neutrino detector (LSND) experiment. The LSND experiment, performed at Los Alamos National Laboratory, observed an excess, consistent with neutrino oscillations, of (nu) over bar (e) in a beam of (nu) over bar (mu). It is determined that the LSND oscillation signal is consistent with no sidereal variation. However, there are several combinations of SME coefficients that describe the LSND data; both with and without sidereal variations. The scale of Lorentz and CPT violation extracted from the LSND data is of order 10(-19) GeV for the SME coefficients a(L) and Exc(L). This solution for Lorentz and CPT violating neutrino oscillations may be tested by other short baseline neutrino oscillation experiments, such as the MiniBooNE experiment. C1 Temple Univ, Philadelphia, PA 19122 USA. Univ Alabama, Tuscaloosa, AL 35487 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Embry Riddle Univ, Prescott, AZ 86301 USA. Indiana Univ, Bloomington, IN 47405 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Louisiana State Univ, Baton Rouge, LA 70803 USA. So Univ, Baton Rouge, LA 70813 USA. RP Temple Univ, Philadelphia, PA 19122 USA. NR 48 TC 73 Z9 73 U1 0 U2 1 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 OCT PY 2005 VL 72 IS 7 AR 076004 DI 10.1103/PhysRevD.72.076004 PG 11 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300078 ER PT J AU Balitsky, I AF Balitsky, I TI High-energy effective action from scattering of QCD shock waves SO PHYSICAL REVIEW D LA English DT Article ID COLOR GLASS CONDENSATE; GLUON DISTRIBUTION-FUNCTIONS; SMALL-X; LARGE NUCLEI; PERTURBATIVE QCD; RENORMALIZATION-GROUP; TRANSVERSE-MOMENTUM; PARTON SATURATION; N-C; EVOLUTION AB At high energies, the relevant degrees of freedom are Wilson lines-infinite gauge links ordered along straight lines collinear to the velocities of colliding particles. The effective action for these Wilson lines is determined by the scattering of QCD shock waves. I develop the symmetric expansion of the effective action in powers of strength of one of the shock waves and calculate the leading term of the series. The corresponding first-order effective action, symmetric with respect to projectile and target, includes both up and down fan diagrams and pomeron loops. C1 Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA. Jlab, Theory Grp, Newport News, VA 23606 USA. RP Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA. EM balitsky@jlab.org NR 52 TC 37 Z9 37 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 OCT PY 2005 VL 72 IS 7 AR 074027 DI 10.1103/PhysRevD.72.074027 PG 17 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300048 ER PT J AU Basak, S Edwards, R Fleming, GT Heller, UM Morningstar, C Richards, D Sato, I Wallace, SJ AF Basak, S Edwards, R Fleming, GT Heller, UM Morningstar, C Richards, D Sato, I Wallace, SJ TI Clebsch-Gordan construction of lattice interpolated fields for excited baryons SO PHYSICAL REVIEW D LA English DT Article ID 4-DIMENSIONAL CUBIC LATTICE; QCD; REPRESENTATIONS; SCATTERING; OPERATORS; EXCHANGE; NUCLEON; MATRIX; MASSES AB Large sets of baryon interpolating field operators are developed for use in lattice QCD studies of baryons with zero momentum. Operators are classified according to the double-valued irreducible representations of the octahedral group. At first, three-quark smeared, local operators are constructed for each isospin and strangeness and they are classified according to their symmetry with respect to exchange of Dirac indices. Nonlocal baryon operators are formulated in a second step as direct products of the spinor structures of smeared, local operators together with gauge-covariant lattice displacements of one or more of the smeared quark fields. Linear combinations of direct products of spinorial and spatial irreducible representations are then formed with appropriate Clebsch-Gordan coefficients of the octahedral group. The construction attempts to maintain maximal overlap with the continuum SU(2) group in order to provide a physically interpretable basis. Nonlocal operators provide direct couplings to states that have nonzero orbital angular momentum. C1 Univ Maryland, Dept Phys, College Pk, MD 20742 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Yale Univ, Dept Phys, New Haven, CT 06511 USA. Amer Phys Soc, Ridge, NY 11961 USA. Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. RP Univ Maryland, Dept Phys, College Pk, MD 20742 USA. RI Fleming, George/L-6614-2013; Morningstar, Colin/N-6925-2014; OI Fleming, George/0000-0002-4987-7167; Morningstar, Colin/0000-0002-0607-9923; Heller, Urs M./0000-0002-2780-5584 NR 39 TC 55 Z9 55 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 OCT PY 2005 VL 72 IS 7 AR 074501 DI 10.1103/PhysRevD.72.074501 PG 20 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300049 ER PT J AU Becher, T Gamiz, E Melnikov, K AF Becher, T Gamiz, E Melnikov, K TI One-loop matching of Delta S=2 four-quark operators with improved staggered fermions SO PHYSICAL REVIEW D LA English DT Article ID 4-FERMION OPERATORS; SUSSKIND FERMIONS; EVANESCENT OPERATORS; MATRIX-ELEMENTS; B-K; LATTICE; QUARK; QCD; PHYSICS; SCALE AB We compute O(alpha(s)) lattice-to-continuum perturbative matching coefficients for the Delta S=2 flavor changing four-quark operators for the Asqtad improved staggered action. In conjunction with lattice simulations with three flavors of light, dynamical quarks, our results yield an unquenched determination of B-K, the parameter that determines the amount of indirect CP violation in the neutral kaon system. Its value is an important input for the unitarity triangle analysis of weak decays. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland. Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA. RP Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM becher@fnal.gov; e.gamiz@physics.gla.ac.uk; kirill@phys.hawaii.edu RI Gamiz, Elvira/E-8009-2016 OI Gamiz, Elvira/0000-0001-5125-2687 NR 44 TC 3 Z9 3 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 OCT PY 2005 VL 72 IS 7 AR 074506 DI 10.1103/PhysRevD.72.074506 PG 11 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300054 ER PT J AU Bern, Z Dixon, LJ Smirnov, VA AF Bern, Z Dixon, LJ Smirnov, VA TI Iteration of planar amplitudes in maximally supersymmetric Yang-Mills theory at three loops and beyond SO PHYSICAL REVIEW D LA English DT Review ID SUDAKOV FORM-FACTOR; GAUGE-THEORY AMPLITUDES; N=4 SYM THEORY; MULTILOOP FEYNMAN-INTEGRALS; MINIMAL SUBTRACTION SCHEME; 3-LOOP SPLITTING FUNCTIONS; 2-LOOP MASTER INTEGRALS; SHELL DOUBLE BOXES; LIGHT-LIKE LEGS; DILATATION OPERATOR AB We compute the leading-color (planar) three-loop four-point amplitude of N=4 supersymmetric Yang-Mills theory in 4-2 epsilon dimensions, as a Laurent expansion about epsilon=0 including the finite terms. The amplitude was constructed previously via the unitarity method, in terms of two Feynman loop integrals, one of which has been evaluated already. Here we use the Mellin-Barnes integration technique to evaluate the Laurent expansion of the second integral. Strikingly, the amplitude is expressible, through the finite terms, in terms of the corresponding one- and two-loop amplitudes, which provides strong evidence for a previous conjecture that higher-loop planar N=4 amplitudes have an iterative structure. The infrared singularities of the amplitude agree with the predictions of Sterman and Tejeda-Yeomans based on resummation. Based on the four-point result and the exponentiation of infrared singularities, we give an exponentiated Ansatz for the maximally helicity-violating n-point amplitudes to all loop orders. The 1/epsilon(2) pole in the four-point amplitude determines the soft, or cusp, anomalous dimension at three loops in N=4 supersymmetric Yang-Mills theory. The result confirms a prediction by Kotikov, Lipatov, Onishchenko and Velizhanin, which utilizes the leading-twist anomalous dimensions in QCD computed by Moch, Vermaseren and Vogt. Following similar logic, we are able to predict a term in the three-loop quark and gluon form factors in QCD. C1 Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119992, Russia. RP Bern, Z (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. NR 169 TC 471 Z9 478 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 EI 1550-2368 J9 PHYS REV D JI Phys. Rev. D PD OCT PY 2005 VL 72 IS 8 AR 085001 DI 10.1103/PhysRevD.72.085001 PG 27 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IX UT WOS:000232936700064 ER PT J AU Carena, M Lykken, J Park, M AF Carena, M Lykken, J Park, M TI Interval approach to braneworld gravity SO PHYSICAL REVIEW D LA English DT Article ID EXTRA DIMENSIONS; MILLIMETER; HIERARCHY; RADION; TEV AB Gravity in five-dimensional braneworld backgrounds may exhibit extra scalar degrees of freedom with problematic features, including kinetic ghosts and strong coupling behavior. Analysis of such effects is hampered by the standard heuristic approaches to braneworld gravity, which use the equations of motion as the starting point, supplemented by orbifold projections and junction conditions. Here we develop the interval approach to braneworld gravity, which begins with an action principle. This shows how to implement general covariance, despite allowing metric fluctuations that do not vanish on the boundaries. We reproduce simple Z(2) orbifolds of gravity, even though in this approach we never perform a Z(2) projection. We introduce a family of "straight gauges", which are bulk coordinate systems in which both branes appear as straight slices in a single coordinate patch. Straight gauges are extremely useful for analyzing metric fluctuations in braneworld models. By explicit gauge-fixing, we show that a general AdS(5)/AdS(4) setup with two branes has at most a radion, but no physical "brane-bending" modes. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Univ Chicago, Dept Phys, Chicago, IL 60637 USA. RP Carena, M (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM carena@fnal.gov; lykken@fnal.gov; mpark@uchicago.edu NR 46 TC 12 Z9 12 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 EI 1550-2368 J9 PHYS REV D JI Phys. Rev. D PD OCT PY 2005 VL 72 IS 8 AR 084017 DI 10.1103/PhysRevD.72.084017 PG 23 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IX UT WOS:000232936700047 ER PT J AU Clark, TE Love, ST Nitta, M ter Veldhuis, T AF Clark, TE Love, ST Nitta, M ter Veldhuis, T TI Nonlinear realization of local symmetries of AdS space SO PHYSICAL REVIEW D LA English DT Article ID GAUGED EXTENDED SUPERGRAVITY; GOLDSTONE SUPERFIELD ACTIONS; PHENOMENOLOGICAL LAGRANGIANS; SUPERSYMMETRY; ANTI; BACKGROUNDS; INVARIANT AB Coset methods are used to construct the action describing the dynamics associated with the spontaneous breaking of the local symmetries of AdS(d+1) space due to the embedding of an AdS(d) brane. The resulting action is an SO(2,d) invariant AdS form of the Einstein-Hilbert action, which in addition to the AdS(d) gravitational vielbein, also includes a massive vector field localized on the brane. Its long wavelength dynamics is the same as a massive Abelian vector field coupled to gravity in AdS(d) space. C1 Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. Macalester Coll, Dept Phys & Astron, St Paul, MN 55105 USA. RP Clark, TE (reprint author), Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA. EM clark@physics.purdue.edu; love@physics.purdue.edu; nitta@th.phys.titech.ac.jp; terveldhuis@macalester.edu NR 34 TC 9 Z9 9 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 EI 1550-2368 J9 PHYS REV D JI Phys. Rev. D PD OCT PY 2005 VL 72 IS 8 AR 085014 DI 10.1103/PhysRevD.72.085014 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IX UT WOS:000232936700077 ER PT J AU Dodelson, S Zhang, PJ AF Dodelson, S Zhang, PJ TI Weak lensing bispectrum SO PHYSICAL REVIEW D LA English DT Article ID COSMOLOGICAL PARAMETERS; POWER SPECTRUM; DARK-MATTER; GALAXIES; SKEWNESS; PROBE AB Weak gravitational lensing of background galaxies offers an excellent opportunity to study the intervening distribution of matter. While much attention to date has focused on the two-point-function of the cosmic shear, the three-point-function, the bispectrum, also contains very useful cosmological information. Here, we compute three corrections to the bispectrum which are nominally of the same order as the leading term. We show that the corrections are small, so they can be ignored when analyzing present surveys. However, they will eventually have to be included for accurate parameter estimates from future surveys. C1 NASA, Fermilab Astrophys Ctr, Fermi Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Chicago, Ctr Astron & Astrophys, Chicago, IL 60637 USA. Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. RP Dodelson, S (reprint author), NASA, Fermilab Astrophys Ctr, Fermi Natl Accelerator Lab, Batavia, IL 60510 USA. RI ZHANG, PENGJIE/O-2825-2015 NR 30 TC 28 Z9 28 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 EI 1550-2368 J9 PHYS REV D JI Phys. Rev. D PD OCT PY 2005 VL 72 IS 8 AR 083001 DI 10.1103/PhysRevD.72.083001 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IX UT WOS:000232936700004 ER PT J AU Enberg, R Golec-Biernat, K Munier, S AF Enberg, R Golec-Biernat, K Munier, S TI High energy asymptotics of scattering processes in QCD SO PHYSICAL REVIEW D LA English DT Article ID GLUON DISTRIBUTION-FUNCTIONS; COLOR GLASS CONDENSATE; REGGEON FIELD-THEORY; SMALL-X; LARGE NUCLEI; RENORMALIZATION-GROUP; SATURATION MOMENTUM; FRONT PROPAGATION; BFKL EQUATION; EVOLUTION AB High energy scattering in the QCD parton model was recently shown to be a reaction-diffusion process and, thus, to lie in the universality class of the stochastic Fisher-Kolmogorov-Petrovsky-Piscounov equation. We recall that the latter appears naturally in the context of the parton model. We provide a thorough numerical analysis of the mean-field approximation, given in QCD by the Balitsky-Kovchegov equation. In the framework of a simple stochastic toy model that captures the relevant features of QCD, we discuss and illustrate the universal properties of such stochastic models. We investigate, in particular, the validity of the mean-field approximation and how it is broken by fluctuations. We find that the mean-field approximation is a good approximation in the initial stages of the evolution in rapidity. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. Ecole Polytech, CNRS, UMR 7644, Ctr Phys Theor, F-91128 Palaiseau, France. Polish Acad Sci, Inst Phys Nucl, Krakow, Poland. Univ Florence, Dipartimento Fis, I-50019 Florence, Italy. RP Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. NR 72 TC 42 Z9 42 U1 0 U2 1 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 OCT PY 2005 VL 72 IS 7 AR 074021 DI 10.1103/PhysRevD.72.074021 PG 20 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300042 ER PT J AU Fukushima, K AF Fukushima, K TI Analytical and numerical evaluation of the Debye and Meissner masses in dense neutral three-flavor quark matter SO PHYSICAL REVIEW D LA English DT Article ID GAPLESS COLOR SUPERCONDUCTIVITY; FLAVOR LOCKED PHASE; EXCHANGE FIELD; QCD AB We calculate the Debye and Meissner masses and investigate chromomagnetic instability associated with the gapless color superconducting phase changing the strange quark mass M-s and the temperature T. Based on the analytical study, we develop a computational procedure to derive the screening masses numerically from curvatures of the thermodynamic potential. When the temperature is zero, from our numerical results for the Meissner masses, we find that instability occurs for A(1) and A(2) gluons entirely in the gapless color-flavor locked (gCFL) phase, while the Meissner masses are real for A(4), A(5), A(6), and A(7) until M-s exceeds a certain value that is larger than the gCFL onset. We then handle mixing between color-diagonal gluons A(3), A(8), and photon A(gamma), and clarify that, among three eigenvalues of the mass squared matrix, one remains positive, one is always zero because of an unbroken U(1)(Q) symmetry, and one exhibits chromomagnetic instability in the gCFL region. We also examine the temperature effects that bring modifications into the Meissner masses. The instability found at large M-s for A(4), A(5), A(6), and A(7) persists at finite T into the u-quark color superconducting (uSC) phase which has u-d and s-u but no d-s quark pairing and also into the two-flavor color superconducting (2SC) phase characterized by u-d quark pairing only. The A(1) and A(2) instability also goes into the uSC phase, but the 2SC phase has no instability for A(1), A(2), and A(3). We map the unstable region for each gluon onto the phase diagram as a function of M-s and T. C1 Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. RP Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. OI Fukushima, Kenji/0000-0003-0899-740X NR 58 TC 79 Z9 79 U1 0 U2 1 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 OCT PY 2005 VL 72 IS 7 AR 074002 DI 10.1103/PhysRevD.72.074002 PG 18 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300023 ER PT J AU Ishii, N Doi, T Nemoto, Y Oka, M Suganuma, H AF Ishii, N Doi, T Nemoto, Y Oka, M Suganuma, H TI Spin 3/2 pentaquarks in anisotropic lattice QCD SO PHYSICAL REVIEW D LA English DT Review ID CONSTITUENT QUARK-MODEL; POSITIVE-STRANGENESS; BARYON STATE; RESONANCE; THETA(+); SEARCHES; PHOTOPRODUCTION; COLLISIONS; SPECTRUM; MASS AB High-precision mass measurements of a pentaquark (5Q) Theta(+) in the J(P)=3/2(+/-) channels are performed in anisotropic quenched lattice QCD. A large number of gauge configurations (N-conf=1000) are prepared for the standard Wilson gauge action at beta=5.75 and the O(a) improved Wilson (clover) quark action is employed for kappa=0.1210(0.0010)0.1240 on a 12(3)x96 lattice with the renormalized anisotropy as a(s)/a(t)=4. The Rarita-Schwinger formalism is adopted for interpolating fields. We examine several interpolating fields with isospin I=0, such as (a) the NK*-type, (b) the color-twisted NK*-type, and (c) the diquark-type operators. After chiral extrapolation, we obtain massive states, m(5Q)similar or equal to 2.1-2.2 GeV in J(P)=3/2(-), and m(5Q)=2.4-2.6 GeV in J(P)=3/2(+). Analyses using the hybrid boundary condition method are performed to determine whether these states are compact 5Q resonances or two-hadron scattering states. No compact 5Q resonance state is found below 2.1 GeV. C1 Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan. Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. Nagoya Univ, Dept Phys, Chikusa Ku, Nagoya, Aichi 4648602, Japan. Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. RP Tokyo Inst Technol, Dept Phys, Meguro Ku, H-27,2-12-1 Ohokayama, Tokyo 1528551, Japan. EM ishii@rarfaxp.riken.jp; doi@quark.phy.bnl.gov; nemoto@hken.phys.nagoya-u.ac.jp; oka@th.phys.titech.ac.jp; suganuma@th.phys.titech.ac.jp NR 111 TC 23 Z9 23 U1 0 U2 1 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 OCT PY 2005 VL 72 IS 7 AR 074503 DI 10.1103/PhysRevD.72.074503 PG 15 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300051 ER PT J AU Lasscock, BG Leinweber, DB Melnitchouk, W Thomas, AW Williams, AG Young, RD Zanotti, JM AF Lasscock, BG Leinweber, DB Melnitchouk, W Thomas, AW Williams, AG Young, RD Zanotti, JM TI Spin-3/2 pentaquark resonance signature in lattice QCD SO PHYSICAL REVIEW D LA English DT Article ID BARYON SPECTROSCOPY; FERMIONS AB The possible discovery of the Theta(+) pentaquark has motivated a number of studies of its nature using lattice QCD. While all the analyses thus far have focused on spin-1/2 states, here we report the results of the first exploratory study in quenched lattice QCD of pentaquarks with spin-3/2. For the spin-3/2 interpolating field we use a product of the standard N and K* operators. We do not find any evidence for the standard lattice resonance signature of attraction (i.e., binding at quark masses near the physical regime) in the J(P) = 3-/2 channel. Some evidence of binding is inferred in the isoscalar 3+/2 channel at several quark masses, in accord with the standard lattice resonance signature. This suggests that this is a good candidate for the further study of pentaquarks on the lattice. C1 Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia. Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia. Jefferson Lab, Newport News, VA 23606 USA. DESY, NIC, John von Neumann Inst Comp, D-15738 Zeuthen, Germany. RP Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia. RI Thomas, Anthony/G-4194-2012; Zanotti, James/H-8128-2012; Young, Ross/H-8207-2012; Williams, Anthony/I-6698-2012; Leinweber, Derek/J-6705-2013; OI Thomas, Anthony/0000-0003-0026-499X; Zanotti, James/0000-0002-3936-1597; Leinweber, Derek/0000-0002-4745-6027; Williams, Anthony/0000-0002-1472-1592 NR 32 TC 20 Z9 20 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 OCT PY 2005 VL 72 IS 7 AR 074507 DI 10.1103/PhysRevD.72.074507 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IT UT WOS:000232936300055 ER PT J AU Nieto, MM AF Nieto, MM TI Analytic gravitational-force calculations for models of the Kuiper Belt, with application to the Pioneer anomaly SO PHYSICAL REVIEW D LA English DT Article ID MASS-DISTRIBUTION; SOLAR-SYSTEM; DUST; CONSTANT; DENSITY; RANGE AB We use analytic techniques to study the gravitational force that would be produced by different Kuiper-Belt mass distributions. In particular, we study the 3-dimensional rings (and wedge) whose densities vary as the inverse of the distance, as a constant, as the inverse-squared of the distance, as well as that which varies according to the Boss-Peale model. These analytic calculations yield physical insight into the physics of the problem. They also verify that physically viable models of this type can produce neither the magnitude nor the constancy of the Pioneer anomaly. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Nieto, MM (reprint author), Los Alamos Natl Lab, Div Theoret, Mississippi B285, Los Alamos, NM 87545 USA. EM mmn@lanl.gov NR 21 TC 19 Z9 19 U1 2 U2 2 PU AMERICAN 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 OCT PY 2005 VL 72 IS 8 AR 083004 DI 10.1103/PhysRevD.72.083004 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 979IX UT WOS:000232936700007 ER PT J AU Bartolozzi, M Leinweber, DB Thomas, AW AF Bartolozzi, M Leinweber, DB Thomas, AW TI Stochastic opinion formation in scale-free networks SO PHYSICAL REVIEW E LA English DT Article ID ON-OFF INTERMITTENCY; SMALL-WORLD NETWORKS; FINANCIAL-MARKETS; COMPLEX NETWORKS; ADDITIVE NOISE; POWER-LAW; FOOD WEBS; TOPOLOGY; DYNAMICS; INTERNET AB The dynamics of opinion formation in large groups of people is a complex nonlinear phenomenon whose investigation is just beginning. Both collective behavior and personal views play an important role in this mechanism. In the present work we mimic the dynamics of opinion formation of a group of agents, represented by two states +/- 1, as a stochastic response of each agent to the opinion of his/her neighbors in the social network and to feedback from the average opinion of the whole. In the light of recent studies, a scale-free Barabasi-Albert network has been selected to simulate the topology of the interactions. A turbulentlike dynamics, characterized by an intermittent behavior, is observed for a certain range of the model parameters. The problem of uncertainty in decision taking is also addressed both from a topological point of view, using random and targeted removal of agents from the network, and by implementing a three-state model, where the third state, zero, is related to the information available to each agent. Finally, the results of the model are tested against the best known network of social interactions: the stock market. A time series of daily closures of the Dow-Jones index has been used as an indicator of the possible applicability of our model in the financial context. Good qualitative agreement is found. C1 Univ Adelaide, Special Res Ctr Subatom Strucr Matter CSSM, Adelaide, SA 5005, Australia. Jefferson Lab, Newport News, VA 23606 USA. RP Univ Adelaide, Special Res Ctr Subatom Strucr Matter CSSM, Adelaide, SA 5005, Australia. RI Thomas, Anthony/G-4194-2012; Leinweber, Derek/J-6705-2013 OI Thomas, Anthony/0000-0003-0026-499X; Leinweber, Derek/0000-0002-4745-6027 NR 66 TC 22 Z9 23 U1 0 U2 12 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD OCT PY 2005 VL 72 IS 4 AR 046113 DI 10.1103/PhysRevE.72.046113 PN 2 PG 10 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GU UT WOS:000232931200025 PM 16383474 ER PT J AU Basagaoglu, H Meakin, P Succi, S AF Basagaoglu, H Meakin, P Succi, S TI Energy dissipation measures in three-dimensional disordered porous media SO PHYSICAL REVIEW E LA English DT Article ID HIGH-VELOCITY FLOW; BOLTZMANN-EQUATION; SINGLE-PHASE AB The onset of nonlinear flow was analyzed in three-dimensional random, porous granular systems with 60% porosity using a lattice-Boltzmann model. Quantitative analysis was based on participation numbers built on local kinetic energies and energy dissipation rates computed via nonequilibrium kinetic (viscous stress) tensors. In contrast to the kinetic energy participation number, which characterizes the onset of nonlinearity in terms of a transition from a locally concentrated to a dispersed distribution of kinetic energy densities, the nonequilibrium kinetic tensor participation number characterizes the onset of nonlinearity in terms of a transition from a dispersed to a locally concentrated distribution of energy dissipation densities as the flow rate increases. The transition characterized by the nonequilibrium kinetic tensor participation number occurred over a nearly equal or a narrower range of Reynolds numbers when compared to the transition characterized by the kinetic energy participation number. C1 Idaho Natl Lab, Idaho Falls, ID 83415 USA. CNR, Ist Applicaz Calcolo, I-00161 Rome, Italy. RP Basagaoglu, H (reprint author), Oregon State Univ, Dept Geosci, Corvallis, OR 97331 USA. RI Succi, Sauro/E-4606-2015 OI Succi, Sauro/0000-0002-3070-3079 NR 20 TC 0 Z9 0 U1 0 U2 6 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 046705 DI 10.1103/PhysRevE.72.046705 PN 2 PG 5 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GU UT WOS:000232931200116 ER PT J AU Bugaev, KA Phair, L Elliott, JB AF Bugaev, KA Phair, L Elliott, JB TI Surface partition of large clusters SO PHYSICAL REVIEW E LA English DT Article ID STATISTICAL MULTIFRAGMENTATION; MODEL; PHASE AB The surface partition of large clusters is derived analytically for a simple statistical model by using the Laplace-Fourier transformation method. In the limit of small amplitude deformations, a suggested "hills and dales model" reproduces the leading term of the Fisher result for the surface entropy to within a few percent. The model also gives the degeneracy prefactor of large clusters. The surface partition of finite clusters is also discussed. C1 Bogolyubov Inst Theoret Phys, Kiev, Ukraine. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Bugaev, KA (reprint author), Bogolyubov Inst Theoret Phys, Kiev, Ukraine. NR 15 TC 12 Z9 13 U1 0 U2 0 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 047106 DI 10.1103/PhysRevE.72.047106 PN 2 PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GU UT WOS:000232931200130 PM 16383579 ER PT J AU Cheng, BL Scannapieco, AJ AF Cheng, BL Scannapieco, AJ TI Buoyancy-drag mix model obtained by multifluid interpenetration equations SO PHYSICAL REVIEW E LA English DT Article ID RAYLEIGH-TAYLOR INSTABILITY; FUSION CAPSULE IMPLOSIONS; 2-PHASE FLOW MODEL; DEPENDENCE; ACCELERATION; FRONTS; FLUIDS; LAWS AB In this paper, a buoyancy drag equation for describing the motion of the edges of a mixing zone driven by Rayleigh-Taylor or Richtmyer-Meshkov instabilities is derived from the multifluid interpenetration mix model equations of Scannapieco and Cheng [Phys. Letters A 299, 49 (2002)]. This derivation provides a physics foundation for a large class of phenomenological buoyancy-drag mix models and also establishes a physical connection between the microscopic collision frequency and the macroscopic fluid drag coefficient. The predicted values for model parameter alpha(ss') in the multifluid interpenetration mix model, from the Rocket-Rig experiments, is in the range of 0.043-0.125 depending upon the Atwood number. The results are also in good agreement with inertial confinement fusion capsule implosions. C1 Los Alamos Natl Lab, Appl Phys Div, Los Alamos, NM 87545 USA. RP Cheng, BL (reprint author), Los Alamos Natl Lab, Appl Phys Div, POB 1663, Los Alamos, NM 87545 USA. NR 32 TC 0 Z9 0 U1 0 U2 2 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 046310 DI 10.1103/PhysRevE.72.046310 PN 2 PG 5 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GU UT WOS:000232931200087 ER PT J AU Dodin, IY Fisch, NJ AF Dodin, IY Fisch, NJ TI Ponderomotive ratchet in a uniform magnetic field SO PHYSICAL REVIEW E LA English DT Article ID DETERMINISTIC RATCHETS; BROWNIAN MOTORS; MAXWELL DEMON; TRANSPORT; GYRORESONANCE; ADIABATICITY; CONFINEMENT; SEPARATION; PARTICLES; FORCES AB We show how a ratchet effect, generally used in systems with periodic potentials, can also be practiced on charged particles by an ac field alone, in a background magnetic field near the cyclotron resonance. The effect relies entirely on the spatial inhomogeneity of the high-frequency drive, which produces a deterministic asymmetric ponderomotive barrier for undamped particles. Such a barrier can reflect particles incident from one side while transmitting those incident from the opposite side, hence acting somewhat like a Maxwell demon. The necessary fields are perhaps most easily realized in a plasma, though the effect is more general. C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Dodin, IY (reprint author), Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. NR 41 TC 13 Z9 13 U1 2 U2 4 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 046602 DI 10.1103/PhysRevE.72.046602 PN 2 PG 5 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GU UT WOS:000232931200100 PM 16383549 ER PT J AU Frink, LJD Frischknecht, AL AF Frink, LJD Frischknecht, AL TI Density functional theory approach for coarse-grained lipid bilayers SO PHYSICAL REVIEW E LA English DT Article ID COMPRESSIBLE PHOSPHOLIPID-MEMBRANES; MOLECULAR-DYNAMICS SIMULATIONS; INHOMOGENEOUS POLYMER SYSTEMS; NONUNIFORM POLYATOMIC SYSTEMS; INTEGRAL-EQUATION THEORY; CONSISTENT-FIELD THEORY; SLIT PORE; MEDIATED INTERACTIONS; LANGMUIR MONOLAYERS; NUMERICAL-METHODS AB Lipid bilayers are important inhomogeneous fluid systems that mediate the environment of cells and the interaction of cells with their environment. A variety of approaches have been taken to model the lipid molecules in bilayers, from all atom molecular dynamics to rigid body liquid crystals. In this paper we discuss the application of a density functional theory approach that treats the lipid molecules at the coarse-grained level of a freely jointed chain. This approach allows for compressibility effects, and can therefore be used to study not only the long range structure in lipid bilayers, but also the nanoscale structure induced in the bilayer when the lipids crystallize or when an inclusion (e.g., an embedded protein) is present. This paper presents a detailed analysis of fluid bilayers and lamellae predicted by the theory. In particular we locate solutions with zero surface tension. We calculate the phase diagram for all possible phases with planar symmetry, including uniform macrophases. Surprisingly, we find a first-order phase transition from the lamellar phase to an isolated bilayer phase on lowering the temperature. This transition appears to be driven by solvent packing effects. A further lowering of the temperature leads to a set of highly ordered bilayers. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Frink, LJD (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. EM ljfrink@sandia.gov RI Frischknecht, Amalie/N-1020-2014 OI Frischknecht, Amalie/0000-0003-2112-2587 NR 55 TC 20 Z9 20 U1 2 U2 9 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 041923 DI 10.1103/PhysRevE.72.041923 PN 1 PG 13 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GO UT WOS:000232930600086 PM 16383436 ER PT J AU Frischknecht, AL Frink, LJD AF Frischknecht, AL Frink, LJD TI Comparison of density functional theory and simulation of fluid bilayers SO PHYSICAL REVIEW E LA English DT Article ID NONUNIFORM POLYATOMIC SYSTEMS; SIMPLE POLYMERS; SLIT PORE; DYNAMICS SIMULATIONS; MOLECULAR-DYNAMICS; PHASE-TRANSITIONS; LIPID-BILAYERS; MEMBRANES; THERMODYNAMICS; COPOLYMERS AB We compare results of classical density functional theory (DFT) to molecular dynamics (MD) simulations of coarse-grained models of lipids in solvent. We find that the DFT captures the liquid structure of coarse-grained lipids both near surfaces and in bilayers adequately. In contrast we find that the MD simulations do not predict ordering in bilayers as is observed in low temperature DFT calculations. The mechanical properties of the fluid DFT bilayers are qualitatively similar to those of the MD bilayers; in particular the shapes of the lateral stress profiles are similar. Values of the area compressibility modulus are in reasonable agreement with previous work on coarse-grained lipids. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Frink, LJD (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. EM ljfrink@sandia.gov RI Frischknecht, Amalie/N-1020-2014 OI Frischknecht, Amalie/0000-0003-2112-2587 NR 25 TC 14 Z9 14 U1 0 U2 4 PU AMERICAN 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 OCT PY 2005 VL 72 IS 4 AR 041924 DI 10.1103/PhysRevE.72.041924 PN 1 PG 12 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GO UT WOS:000232930600087 PM 16383437 ER PT J AU Kevrekidis, PG Frantzeskakis, DJ Carretero-Gonzalez, R Malomed, BA Bishop, AR AF Kevrekidis, PG Frantzeskakis, DJ Carretero-Gonzalez, R Malomed, BA Bishop, AR TI Discrete solitons and vortices on anisotropic lattices SO PHYSICAL REVIEW E LA English DT Article ID NONLINEAR SCHRODINGER-EQUATION; BOSE-EINSTEIN CONDENSATE; PHOTONIC LATTICES; OPTICAL LATTICES; LOCALIZED MODES; DARK SOLITONS; BREATHERS; STABILITY; ARRAYS; THRESHOLDS AB We consider the effects of anisotropy on solitons of various types in two-dimensional nonlinear lattices, using the discrete nonlinear Schrodinger equation as a paradigm model. For fundamental solitons, we develop a variational approximation that predicts that broad quasicontinuum solitons are unstable, while their strongly anisotropic counterparts are stable. By means of numerical methods, it is found that, in the general case, the fundamental solitons and simplest on-site-centered vortex solitons ("vortex crosses") feature enhanced or reduced stability areas, depending on the strength of the anisotropy. More surprising is the effect of anisotropy on the so-called "super-symmetric" intersite-centered vortices ("vortex squares"), with the topological charge S equal to the square's size M: we predict in an analytical form by means of the Lyapunov-Schmidt theory, and confirm by numerical results, that arbitrarily weak anisotropy results in dramatic changes in the stability and dynamics in comparison with the degenerate, in this case, isotropic, limit. C1 Univ Massachusetts, Dept Math & Stat, Amherst, MA 01003 USA. Univ Athens, Dept Phys, Athens 15784, Greece. San Diego State Univ, Nonlinear Dynam Syst Grp, Dept Math & Stat, San Diego, CA 92182 USA. San Diego State Univ, Computat Sci Res Ctr, San Diego, CA 92182 USA. Tel Aviv Univ, Fac Engn, Sch Elect Engn, Dept Interdisciplinary Studies, IL-69978 Tel Aviv, Israel. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Univ Massachusetts, Dept Math & Stat, Amherst, MA 01003 USA. NR 55 TC 15 Z9 16 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD OCT PY 2005 VL 72 IS 4 AR 046613 DI 10.1103/PhysRevE.72.046613 PN 2 PG 9 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GU UT WOS:000232931200111 PM 16383560 ER PT J AU Nukala, PKVV Simunovic, S AF Nukala, PKVV Simunovic, S TI Statistical physics models for nacre fracture simulation SO PHYSICAL REVIEW E LA English DT Article ID MECHANICAL-PROPERTIES; STROMBUS-GIGAS; COMPOSITES; TOUGHNESS; DAMAGE; DEFORMATION; BREAKDOWN; NETWORKS; BEHAVIOR; TENSION AB Natural biological materials such as nacre (or mother-of-pearl), exhibit phenomenal fracture strength and toughness properties despite the brittle nature of their constituents. For example, nacre's work of fracture is three orders of magnitude greater than that of a single crystal of its constituent mineral. This study investigates the fracture properties of nacre using a simple discrete lattice model based on continuous damage random thresholds fuse network. The discrete lattice topology of the proposed model is based on nacre's unique brick and mortar microarchitecture, and the mechanical behavior of each of the bonds in the discrete lattice model is governed by the characteristic modular damage evolution of the organic matrix that includes the mineral bridges between the aragonite platelets. The analysis indicates that the excellent fracture properties of nacre are a result of their unique microarchitecture, repeated unfolding of protein molecules (modular damage evolution) in the organic polymer, and the presence of fiber bundle of mineral bridges between the aragonite platelets. The numerical results obtained using this simple discrete lattice model are in excellent agreement with the previously obtained experimental results, such as nacre's stiffness, tensile strength, and work of fracture. C1 Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. RP Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. NR 39 TC 15 Z9 17 U1 2 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0045 EI 2470-0053 J9 PHYS REV E JI Phys. Rev. E PD OCT PY 2005 VL 72 IS 4 AR 041919 DI 10.1103/PhysRevE.72.041919 PN 1 PG 9 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GO UT WOS:000232930600082 PM 16383432 ER PT J AU Orellana, CS Aranson, IS Kwok, WK Rica, S AF Orellana, CS Aranson, IS Kwok, WK Rica, S TI Self-diffusion of particles in gas-driven granular layers with periodic flow modulation SO PHYSICAL REVIEW E LA English DT Article ID FLUIDIZED-BEDS; PATTERNS; SIMULATION; BUBBLE; POWDER; MATTER AB We study self-diffusion of particles in gas-driven granular layers by high-speed fluorescent video microscopy. We show that periodic flow modulation results in an enhancement of the particle's diffusion. The diffusion enhancement, which in turn is an indication of more efficient fluidization of the granular layer, is associated with the onset of disordered subharmonic patterns. Our measurements provide a sensitive characterization method of the fluidization properties of particulate-gas systems. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Univ Chile, Dept Fis, Santiago 6511226, Chile. RP Orellana, CS (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Rica, Sergio/G-9865-2011; Aranson, Igor/I-4060-2013 NR 27 TC 1 Z9 1 U1 1 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 EI 1550-2376 J9 PHYS REV E JI Phys. Rev. E PD OCT PY 2005 VL 72 IS 4 AR 040301 DI 10.1103/PhysRevE.72.040301 PN 1 PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 979GO UT WOS:000232930600002 ER PT J AU Chalut, K Litvinenko, VN Pinayev, IV AF Chalut, K Litvinenko, VN Pinayev, IV TI Method of phase-space tomography of rapidly evolving E beams SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID FEL; PULSES AB In this paper, we describe a new method of phase-space tomography. This method allows one to restore phase-space density using a small number of projections covering a limited range of linear transformations in the phase space. Practical applications of this method are discussed. C1 Duke Univ, Dept Phys, Durham, NC 27708 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. RP Chalut, K (reprint author), Duke Univ, Dept Phys, Durham, NC 27708 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU AMERICAN 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 OCT PY 2005 VL 8 IS 10 AR 102802 DI 10.1103/PhysRevSTAB.8.102802 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 984QP UT WOS:000233319700005 ER PT J AU Chao, AW AF Chao, AW TI Matrix formalism for spin dynamics near a single depolarization resonance SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB A matrix formalism is developed to describe the spin dynamics in a synchrotron near a single depolarization resonance as the particle energy ( and therefore its spin precession frequency) is varied in a prescribed pattern as a function of time such as during acceleration. This formalism is first applied to the case of crossing the resonance with a constant crossing speed and a finite total step size, and then applied also to other more involved cases when the single resonance is crossed repeatedly in a prescribed manner consisting of linear ramping segments or sudden jumps. How repeated crossings produce an interference behavior is discussed using the results obtained. For a polarized beam with finite energy spread, a spin echo experiment is suggested to explore this interference effect. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Chao, AW (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 15 TC 12 Z9 12 U1 0 U2 0 PU AMERICAN 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 OCT PY 2005 VL 8 IS 10 AR 104001 DI 10.1103/PhysRevSTAB.8.104001 PG 13 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 984QP UT WOS:000233319700006 ER PT J AU Hartemann, FV Brown, WJ Gibson, DJ Anderson, SG Tremaine, AM Springer, PT Wootton, AJ Hartouni, EP Barty, CPJ AF Hartemann, FV Brown, WJ Gibson, DJ Anderson, SG Tremaine, AM Springer, PT Wootton, AJ Hartouni, EP Barty, CPJ TI High-energy scaling of Compton scattering light sources SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID NONLINEAR THOMSON SCATTERING AB No monochromatic (Delta omega(x)/omega(x) < 1%), high peak brightness [ > 10(20) photons/(mm(2) x mrad(2) x s x 0: 1% bandwidth)], tunable light sources currently exist above 100 keV. Important applications that would benefit from such new hard x-ray and gamma-ray sources include the following: nuclear resonance fluorescence spectroscopy and isotopic imaging, time-resolved positron annihilation spectroscopy, and MeV flash radiography. In this paper, the peak brightness of Compton scattering light sources is derived for head-on collisions and found to scale quadratically with the normalized energy, gamma; inversely with the electron beam duration, Delta tau, and the square of its normalized emittance, epsilon; and linearly with the bunch charge, eN(e), and the number of photons in the laser pulse, N-gamma: (B) over cap (x) proportional to gamma(2) NeN gamma/epsilon(2)Delta(tau). This gamma(2) scaling shows that for low normalized emittance electron beams ( 1 nC, 1 mm center dot mrad, < 1 ps, > 100 MeV), and tabletop laser systems (1 - 10 J, 5 ps) the x-ray peak brightness can exceed 10(23) photons/(mm(2) x mrad(2) x s x 0.1% bandwidth) near (h) over bar omega(x) = 1 MeV; this is confirmed by three-dimensional codes that have been benchmarked against Compton scattering experiments performed at Lawrence Livermore National Laboratory. The interaction geometry under consideration is head-on collisions, where the x-ray flash duration is shown to be equal to that of the electron bunch, and which produce the highest peak brightness for compressed electron beams. Important nonlinear effects, including spectral broadening, are also taken into account in our analysis; they show that there is an optimum laser pulse duration in this geometry, of the order of a few picoseconds, in sharp contrast with the initial approach to laser-driven Compton scattering sources where femtosecond laser systems were thought to be mandatory. The analytical expression for the peak on-axis brightness derived here is a powerful tool to efficiently explore the 12-dimensional parameter space corresponding to the phase spaces of both the electron and incident laser beams and to determine optimum conditions for producing high-brightness x rays. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 21 TC 66 Z9 66 U1 1 U2 12 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 OCT PY 2005 VL 8 IS 10 AR 100702 DI 10.1103/PhysRevSTAB.8.100702 PG 17 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 984QP UT WOS:000233319700002 ER PT J AU Shiltsev, V Alexahin, Y Lebedev, V Lebrun, P Moore, RS Sen, T Tollestrup, A Valishev, A Zhang, XL AF Shiltsev, V Alexahin, Y Lebedev, V Lebrun, P Moore, RS Sen, T Tollestrup, A Valishev, A Zhang, XL TI Beam-beam effects in the Tevatron SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB The Tevatron in Collider Run II ( 2001 - present) is operating with 6 times more bunches, many times higher beam intensities and luminosities than in Run I ( 1992 - 1995). Electromagnetic long-range and head-on interactions of high intensity proton and antiproton beams have been significant sources of beam loss and lifetime limitations. We present observations of the beam-beam phenomena in the Tevatron and results of relevant beam studies. We analyze the data and various methods employed in operations, predict the performance for planned luminosity upgrades, and discuss ways to improve it. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 13 TC 34 Z9 33 U1 0 U2 1 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 OCT PY 2005 VL 8 IS 10 AR 101001 DI 10.1103/PhysRevSTAB.8.101001 PG 18 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 984QP UT WOS:000233319700003 ER PT J AU Yunn, BC AF Yunn, BC TI Expressions for the threshold current of multipass beam breakup in recirculating linacs from single cavity models SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB We investigate multipass beam breakup (BBU) in a recirculating linear accelerator in the framework of a single cavity model. We present expressions for the beam breakup threshold current for various situations derived from a perturbative solution of BBU equations. These formulae should serve as a guide to understand the BBU phenomenon for a particular system and also as a tool to estimate the BBU threshold current quickly. Many of the results presented are more general than previous considerations because they include the effects of coupling between the two transverse polarizations in each dipole higher order mode. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Yunn, BC (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. NR 12 TC 1 Z9 1 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD OCT PY 2005 VL 8 IS 10 AR 104401 DI 10.1103/PhysRevSTAB.8.104401 PG 9 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 984QP UT WOS:000233319700008 ER PT J AU Lockerby, DA Reese, JM Gallis, MA AF Lockerby, DA Reese, JM Gallis, MA TI The usefulness of higher-order constitutive relations for describing the Knudsen layer SO PHYSICS OF FLUIDS LA English DT Article; Proceedings Paper CT International Conference on Transport Phenomena in Micro- and Nanodevices CY OCT 17-21, 2004 CL Kona Coast, HI SP Engn Conf Int ID BURNETT EQUATIONS; REGULARIZATION; FLOWS AB The Knudsen layer is an important rarefaction phenomenon in gas flows in and around microdevices. Its accurate and efficient modeling is of critical importance in the design of such systems and in predicting their performance. In this paper we investigate the potential that higher-order continuum equations may have to model the Knudsen layer, and compare their predictions to high-accuracy DSMC (direct simulation Monte Carlo) data, as well as a standard result from kinetic theory. We find that, for a benchmark case, the most common higher-order continuum equation sets (Grad's 13 moment, Burnett, and super-Burnett equations) cannot capture the Knudsen layer. Variants of these equation families have, however, been proposed and some of them can qualitatively describe the Knudsen layer structure. To make quantitative comparisons, we obtain additional boundary conditions (needed for unique solutions to the higher-order equations) from kinetic theory. However, we find the quantitative agreement with kinetic theory and DSMC data is only slight. (c) 2005 American Institute of Physics. C1 Brunel Univ, Sch Engn & Design, Uxbridge UB8 3PH, Middx, England. Univ Strathclyde, Dept Mech Engn, Glasgow G1 1XJ, Lanark, Scotland. Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA. RP Brunel Univ, Sch Engn & Design, Uxbridge UB8 3PH, Middx, England. RI Reese, Jason/H-8739-2012; OI Reese, Jason/0000-0001-5188-1627; Lockerby, Duncan/0000-0001-5232-7986 NR 16 TC 56 Z9 57 U1 1 U2 10 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-6631 EI 1089-7666 J9 PHYS FLUIDS JI Phys. Fluids PD OCT PY 2005 VL 17 IS 10 AR 100609 DI 10.1063/1.1897005 PG 6 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 979JW UT WOS:000232939200010 ER PT J AU Lockerby, DA Reese, JM Gallis, MA AF Lockerby, DA Reese, JM Gallis, MA TI The usefulness of higher-order constitutive relations for describing the Knudsen layer (vol 17, pg 100609, 2005) SO PHYSICS OF FLUIDS LA English DT Correction C1 Brunel Univ, Sch Engn & Design, Uxbridge UB8 3PH, Middx, England. Univ Strathclyde, Dept Mech Engn, Glasgow G1 1XJ, Lanark, Scotland. Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA. RP Lockerby, DA (reprint author), Brunel Univ, Sch Engn & Design, Uxbridge UB8 3PH, Middx, England. RI Reese, Jason/H-8739-2012; OI Reese, Jason/0000-0001-5188-1627; Lockerby, Duncan/0000-0001-5232-7986 NR 1 TC 1 Z9 1 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 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD OCT PY 2005 VL 17 IS 10 AR 109902 DI 10.1063/1.2134453 PG 1 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 979JW UT WOS:000232939200074 ER PT J AU Bakhtiari, M Kramer, GJ Whyte, DG AF Bakhtiari, M Kramer, GJ Whyte, DG TI Momentum-space study of the effect of bremsstrahlung radiation on the energy of runaway electrons in tokamaks SO PHYSICS OF PLASMAS LA English DT Article ID FAST PLASMA SHUTDOWN; AVALANCHE; JT-60U; GAS AB The dynamics of runaway electrons in tokamak plasmas is studied in momentum space. In this analysis the electrons are accelerated by an electric field while they are decelerated by collisional drag, synchrotron radiation, and bremsstrahlung radiation. It is shown that the inclusion of bremsstrahlung losses into the calculations is important for the interpretation of disruption-mitigation experiments where large amounts of high Z are injected into the plasma. The inclusion of bremsstrahlung reduces the maximum energy that the runaway electrons can gain from the electric field. C1 Univ Wisconsin, Madison, WI 53706 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Univ Wisconsin, Madison, WI 53706 USA. RP Univ Wisconsin, Madison, WI 53706 USA. EM bakhtiar@engr.wisc.edu NR 14 TC 17 Z9 17 U1 1 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-664X EI 1089-7674 J9 PHYS PLASMAS JI Phys. Plasmas PD OCT PY 2005 VL 12 IS 10 AR 102503 DI 10.1063/1.2065368 PG 5 WC Physics, Fluids & Plasmas SC Physics GA 978EG UT WOS:000232855800027 ER PT J AU Hesse, M Kuznetsova, M Schindler, K Birn, J AF Hesse, M Kuznetsova, M Schindler, K Birn, J TI Three-dimensional modeling of electron quasiviscous dissipation in guide-field magnetic reconnection SO PHYSICS OF PLASMAS LA English DT Article ID THIN CURRENT SHEETS; SIMULATIONS; INSTABILITY; CHALLENGE AB A numerical study of guide-field magnetic reconnection in a three-dimensional model is presented. Starting from an initial, perturbed, force-free current sheet, it is shown that reconnection develops to an almost translationally invariant state, where magnetic perturbations are aligned primarily along the main current flow direction. An analysis of guide-field and electron flow signatures indicates behavior that is very similar to earlier, albeit not three-dimensional, simulations. Furthermore, a detailed investigation of electron pressure nongyrotropies in the central diffusion region confirms the major role the associated dissipation process plays in establishing the reconnection electric field. C1 NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. Ruhr Univ Bochum, D-44780 Bochum, Germany. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hesse, M (reprint author), NASA, Goddard Space Flight Ctr, Code 661, Greenbelt, MD 20771 USA. RI Hesse, Michael/D-2031-2012; Kuznetsova, Maria/F-6840-2012; NASA MMS, Science Team/J-5393-2013 OI NASA MMS, Science Team/0000-0002-9504-5214 NR 19 TC 13 Z9 13 U1 0 U2 0 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 OCT PY 2005 VL 12 IS 10 AR 100704 DI 10.1063/1.2114350 PG 4 WC Physics, Fluids & Plasmas SC Physics GA 978EG UT WOS:000232855800004 ER PT J AU Kolesnychenko, OY Lutsenko, VV White, RB AF Kolesnychenko, OY Lutsenko, VV White, RB TI Ion acceleration in plasmas with Alfven waves SO PHYSICS OF PLASMAS LA English DT Article ID CYCLOTRON FREQUENCY; SOLAR-FLARES; TURBULENCE AB Effects of elliptically polarized Alfven waves on thermal ions are investigated. Both regular oscillations and stochastic motion of the particles are observed. It is found that during regular oscillations the energy of the thermal ions can reach magnitudes well exceeding the plasma temperature, the effect being largest in low-beta plasmas (beta is the ratio of the plasma pressure to the magnetic-field pressure). Conditions of low stochasticity threshold are obtained. It is shown that stochasticity can arise even for waves propagating along the magnetic field provided that the frequency spectrum is nonmonochromatic. The analysis carried out is based on equations derived from using a Lagrangian formalism. A code solving these equations is developed. Steady-state perturbations and perturbations with the amplitude slowly varying in time are considered. C1 Main Astron Observ, Space Plasma Phys Dept, UA-03680 Kiev, Ukraine. Inst Nucl Res, UA-03680 Kiev, Ukraine. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Main Astron Observ, Space Plasma Phys Dept, Zabolotny St 27, UA-03680 Kiev, Ukraine. RI White, Roscoe/D-1773-2013 OI White, Roscoe/0000-0002-4239-2685 NR 9 TC 3 Z9 3 U1 1 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-664X EI 1089-7674 J9 PHYS PLASMAS JI Phys. Plasmas PD OCT PY 2005 VL 12 IS 10 AR 102101 DI 10.1063/1.2052133 PG 8 WC Physics, Fluids & Plasmas SC Physics GA 978EG UT WOS:000232855800006 ER PT J AU Malyshkin, LM Linde, T Kulsrud, RM AF Malyshkin, LM Linde, T Kulsrud, RM TI Magnetic reconnection with anomalous resistivity in two-and-a-half dimensions. I. Quasistationary case SO PHYSICS OF PLASMAS LA English DT Article ID FIELD-LINE RECONNEXION; LOCALIZED ENHANCEMENT; ASTROPHYSICAL PLASMAS; SIMULATION; SHEET; CODE AB In this paper quasistationary, "two-and-a-half-dimensional" magnetic reconnection is studied in the framework of incompressible resistive magnetohydrodynamics. A new theoretical approach for the calculation of the reconnection rate is presented. This approach is based on the local analytical derivations in a thin reconnection layer, and it is applicable to the case when resistivity is anomalous and is an arbitrary function of the electric current and the spatial coordinates. It is found that a quasistationary reconnection rate is fully determined by a particular functional form of the anomalous resistivity and by the local configuration of the magnetic field just outside the reconnection layer. It is also found that, in the special case of constant resistivity, reconnection is Sweet-Parker [Electromagnetic Phenomena, edited by B. Lehnert (Cambridge University Press, New York, 1958), p. 123; Astrophys. J., Suppl. 8, 177 (1963)] and not Petschek [AAS-NASA Symposium on Solar Flares NASA SP5 (National Aeronautics and Space Administration, Washington, D.C., 1964), p. 425]. C1 Univ Chicago, CMSO, Dept Astron, Chicago, IL 60637 USA. Princeton Plasma Phys Lab, CMSO, Princeton, NJ 08543 USA. RP Malyshkin, LM (reprint author), Univ Chicago, CMSO, Dept Astron, Chicago, IL 60637 USA. EM leonmal@flash.uchicago.edu; linde@flash.uchicago.edu; rmk@pppl.gov NR 34 TC 29 Z9 29 U1 0 U2 2 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 OCT PY 2005 VL 12 IS 10 AR 102902 DI 10.1063/1.2084847 PG 14 WC Physics, Fluids & Plasmas SC Physics GA 978EG UT WOS:000232855800043 ER PT J AU Polomarov, OV Theodosiou, CE Kaganovich, ID Ramamurthi, BN Economou, DJ AF Polomarov, OV Theodosiou, CE Kaganovich, ID Ramamurthi, BN Economou, DJ TI Effectiveness of electron-cyclotron and transmission resonance heating in inductively coupled plasmas SO PHYSICS OF PLASMAS LA English DT Article ID MAGNETIC-FIELD; DISCHARGES; WAVE AB The electron-cyclotron and transmission resonances in magnetically enhanced low-pressure one-dimensional uniform inductively coupled plasmas are studied analytically within a simple model of two driven electrodes. The results of our approach are also applicable to the case of one grounded electrode. It is shown that, for a high discharge frequency, the plasma resistance is greatly enhanced at electron-cyclotron and transmission resonances, but normally does not exhibit a sharp peak at the electron-cyclotron resonance (ECR) condition. For a low discharge frequency, the ECR heating is not effective. Conditions of strong transmission resonances are identified. A transition from a bounded to semi-infinite plasma with overlapping of transmission resonances is also considered. (c) 2005 American Institute of Physics. C1 Univ Texas, Austin, TX 78712 USA. Univ Toledo, Toledo, OH 43606 USA. Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. Univ Houston, Plasma Proc Lab, Houston, TX 77204 USA. RP Polomarov, OV (reprint author), Univ Texas, Austin, TX 78712 USA. NR 18 TC 6 Z9 6 U1 0 U2 2 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 OCT PY 2005 VL 12 IS 10 AR 104505 DI 10.1063/1.2034407 PG 4 WC Physics, Fluids & Plasmas SC Physics GA 978EG UT WOS:000232855800062 ER PT J AU Rewoldt, G Ku, LP Tang, WM AF Rewoldt, G Ku, LP Tang, WM TI Comparison of microinstability properties for stellarator magnetic geometries SO PHYSICS OF PLASMAS LA English DT Article ID LARGE HELICAL DEVICE; TEMPERATURE-GRADIENT MODES; EQUILIBRIA; STABILITY; WENDELSTEIN-7-X; SIMULATIONS; TRANSPORT; PLASMAS AB The microinstability properties of nine distinct magnetic geometries corresponding to different operating and planned stellarators with differing symmetry properties are compared. Specifically, the kinetic stability properties (linear growth rates and real frequencies) of toroidal microinstabilities (driven by ion temperature gradients and trapped-electron dynamics) are compared, as parameters are varied. The familiar ballooning representation is used to enable efficient treatment of the spatial variations along the equilibrium magnetic field lines. These studies provide useful insights for understanding the differences in the relative strengths of the instabilities caused by the differing localizations of good and bad magnetic curvature and of the presence of trapped particles. The associated differences in growth rates due to magnetic geometry are large for small values of the temperature gradient parameter eta equivalent to d ln T/d ln n, whereas for large values of eta, the mode is strongly unstable for all of the different magnetic geometries. C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. EM rewoldt@pppl.gov NR 28 TC 20 Z9 20 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-664X EI 1089-7674 J9 PHYS PLASMAS JI Phys. Plasmas PD OCT PY 2005 VL 12 IS 10 AR 102512 DI 10.1063/1.2089247 PG 10 WC Physics, Fluids & Plasmas SC Physics GA 978EG UT WOS:000232855800036 ER PT J AU Sun, X Cohen, SA Scime, EE Miah, M AF Sun, X Cohen, SA Scime, EE Miah, M TI On-axis parallel ion speeds near mechanical and magnetic apertures in a helicon plasma device SO PHYSICS OF PLASMAS LA English DT Article ID FREE DOUBLE-LAYER; TEMPERATURE; DISCHARGE; VELOCITY; FIELD AB Using laser-induced fluorescence, measurements of parallel ion velocities were made along the axis of a helicon-generated Ar plasma column whose radius was modified by spatially separated mechanical and magnetic apertures. Ion acceleration to supersonic speeds was observed 0.1-5 cm downstream of both aperture types, simultaneously generating two steady-state double layers (DLs) when both apertures were in place. The DL downstream of the mechanical aperture plate had a larger potential drop, Delta phi(DL)=6-9 kT(e), compared to the DL downstream of the magnetic aperture, Delta phi(DL)similar to 3 kT(e). In the presheath region upstream of the mechanical aperture, the convective ion speed increased over a collisional distance; from stagnant at 4 cm from the aperture to the 1.4 times the sound speed at the aperture. The dependence of the free- and trapped-ion-velocity-distribution functions on the magnetic-field strength and mechanical-aperture electrical bias are also presented. (c) 2005 American Institute of Physics. C1 W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Sun, X (reprint author), W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA. NR 32 TC 22 Z9 22 U1 0 U2 5 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 OCT PY 2005 VL 12 IS 10 AR 103509 DI 10.1063/1.2121347 PG 8 WC Physics, Fluids & Plasmas SC Physics GA 978EG UT WOS:000232855800057 ER PT J AU Tang, XZ Boozer, AH AF Tang, XZ Boozer, AH TI Chandrasekhar-Kendall modes and Taylor relaxation in an axisymmetric torus SO PHYSICS OF PLASMAS LA English DT Article ID COAXIAL HELICITY INJECTION; REVERSED-FIELD-PINCH; MAGNETIC-FIELDS; RELAXED STATES; CURRENT DRIVE; SUSTAINMENT; PLASMA; EXPANSION; TOKAMAK AB The helicity-conserving Taylor relaxation of a plasma in a toroidal chamber to a force-free configuration, which means j=(j(parallel to)/B)B with j(parallel to)/B independent of position, can be generalized to include the external injection of magnetic helicity. When this is done, j(parallel to)/B has resonant values, which can be understood using the eigenmodes of Taylor-relaxed plasmas enclosed by a perfectly conducting toroidal shell. These eigenmodes include a toroidal generalization of those found by Chandrasekhar and Kendall (CK) [Astrophys. J. 126, 457 (1957)] for a spherical chamber, which has no externally produced magnetic flux. It is shown that the CK modes in an axisymmetric torus are of three types: (1) helical modes as well as axisymmetric modes that have (2) and have no (3) net toroidal flux. Yoshida and Giga (YG) [Math. Z. 204, 235 (1990)] published a fourth class of modes: axisymmetric modes that have no net toroidal flux in the chamber due to toroidal flux produced by a net poloidal current in the shell canceling the net toroidal flux from the plasma currents. Jensen and Chu [Phys. Fluids 27, 2881 (1984)], as well as Taylor [Rev. Mod. Phys. 58, 741 (1986)], considered modes in which the vector potential was zero on the axisymmetric toroidal chamber. It is shown that these Jensen-Chu-Taylor modes include only the CK helical modes and the CK axisymmetric modes without net toroidal flux. If the toroidal chamber is perfectly conducting except for a cut that prevents a net poloidal current from flowing, resonances in j(parallel to)/B occur at the eigenvalues of the axisymmetric CK modes. Jensen and Chu studied this type of resonance. Without the cut, so a poloidal current flows to conserve the net toroidal flux, it is shown that j(parallel to)/B resonances occur at the eigenvalues of the CK modes that have no net toroidal flux and at the eigenvalues of the YG modes, which are upshifted from the eigenvalues of the axisymmetric CK modes that carry net toroidal flux. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA. RP Tang, XZ (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. EM xtang@lanl.gov NR 28 TC 9 Z9 9 U1 1 U2 5 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 OCT PY 2005 VL 12 IS 10 AR 102102 DI 10.1063/1.2062827 PG 10 WC Physics, Fluids & Plasmas SC Physics GA 978EG UT WOS:000232855800007 ER PT J AU Belitsky, AV Radyushkin, AV AF Belitsky, AV Radyushkin, AV TI Unraveling hadron structure with generalized parton distributions SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS LA English DT Review ID VIRTUAL COMPTON-SCATTERING; DEEP-INELASTIC-SCATTERING; TO-LEADING-ORDER; PION FORM-FACTOR; HARD EXCLUSIVE ELECTROPRODUCTION; WANDZURA-WILCZEK APPROXIMATION; CHIRAL PERTURBATION-THEORY; LIGHT-CONE OPERATORS; TWIST DISTRIBUTION AMPLITUDES; ELECTRON-NUCLEON SCATTERING AB The generalized parton distributions, introduced nearly a decade ago, have emerged as a universal tool to describe hadrons in terms of quark and gluonic degrees of freedom. They combine the features of form factors, parton densities and distribution amplitudes-the functions used for a long time in studies of hadronic structure. Generalized parton distributions are analogous to the phase-space Wigner quasi-probability function of nonrelativistic quantum mechanics which encodes full information on a quantum-mechanical system. We give an extensive review of main achievements in the development of this formalism. We discuss physical interpretation and basic properties of generalized parton distributions, their modeling and QCD evolution in the leading and next-to-leading orders. We describe how these functions enter a wide class of exclusive reactions, such as electro- and photo-production of photons, lepton pairs, or mesons. The theory of these processes requires and implies full control over diverse corrections and thus we outline the progress in handling higher-order and higher-twist effects. We catalogue corresponding results and present diverse techniques for their derivations. Subsequently, we address observables that are sensitive to different characteristics of the nucleon structure in terms of generalized parton distributions. The ultimate goal of the GPD approach is to provide a three-dimensional spatial picture of the nucleon, direct measurement of the quark orbital angular momentum, and various inter- and multi-parton correlations. (c) 2005 Published by Elsevier B.V. C1 Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA. Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA. Jefferson Lab, Theory Grp, Newport News, VA 23606 USA. RP Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA. EM andrei.belitsky@asu.edu NR 619 TC 416 Z9 416 U1 1 U2 7 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 OCT PY 2005 VL 418 IS 1-6 BP 1 EP 387 DI 10.1016/j.physrep.2005.06.002 PG 387 WC Physics, Multidisciplinary SC Physics GA 972AH UT WOS:000232425700001 ER PT J AU Whyte, DG Lipschultz, BL Stangeby, PC Boedo, J Rudakov, DL Watkins, JG West, WP AF Whyte, DG Lipschultz, BL Stangeby, PC Boedo, J Rudakov, DL Watkins, JG West, WP TI The magnitude of plasma flux to the main-wall in the DIII-D tokamak SO PLASMA PHYSICS AND CONTROLLED FUSION LA English DT Article ID ALCATOR-C-MOD; SCRAPE-OFF LAYER; EDGE PLASMA; TRANSPORT; DIVERTOR; BOUNDARY; PARTICLE; PROBE; RECOMBINATION; CONVECTION AB The magnitude of plasma contact with main-wall. surfaces is examined on the DIII-D poloidal divertor tokamak. A 'window-frame' technique has been developed for axisymmetric surfaces to provide measurements of total plasma flux (ions s(-1)) to the walls, I-wall. Despite the use of a separatrix-wall gap that is 2-3 times the radial e-folding length of the plasma parameters near the separatrix, increasing e-folding lengths away from the separatrix result in an I-wall of similar magnitude to the;ion flux received by the divertor plate, I-div. The I-wall/I-div ratio increases strongly with line-averaged density and ranges from similar to 0.1-0.2 with attached outer divertor plasmas to similar to 1 with detached divertor plasmas. These observations hold during core density scans in both low (L-mode) and high (H-mode) confinement energy confinement regimes, and their importance to core fuelling and impurities is discussed. It is found that the magnitude Of Iwall cannot be accurately measured by arbitrary main chamber D-a views due to the strong poloidal and toroidal asymmetry of the plasma contact. However D-a measurements reflect the relative trends of main-chamber recycling. Based on scrape-off layer (SOL) profiles in the shadow of the main-wall baffle, the far SOL cross-field particle transport is best described as convective with an effective velocity similar to 100 m s(-1). C1 Univ Wisconsin, Madison, WI 53706 USA. MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA. Univ Toronto, UTIAS, Downsview, ON M3H 5T6, Canada. Univ Calif San Diego, La Jolla, CA 92093 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Gen Atom Co, San Diego, CA 92186 USA. RP Whyte, DG (reprint author), Univ Wisconsin, 1500 Engn Dr, Madison, WI 53706 USA. EM whyte@engr.wisc.edu RI Lipschultz, Bruce/J-7726-2012 OI Lipschultz, Bruce/0000-0001-5968-3684 NR 38 TC 25 Z9 25 U1 2 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0741-3335 J9 PLASMA PHYS CONTR F JI Plasma Phys. Control. Fusion PD OCT PY 2005 VL 47 IS 10 BP 1579 EP 1607 DI 10.1088/0741-3335/47/10/002 PG 29 WC Physics, Fluids & Plasmas SC Physics GA 980NJ UT WOS:000233024900003 ER PT J AU Dehal, P Boore, JL AF Dehal, P Boore, JL TI Two rounds of whole genome duplication in the ancestral vertebrate SO PLOS BIOLOGY LA English DT Article ID HOMEOBOX GENE CLUSTERS; EN-BLOC DUPLICATION; SACCHAROMYCES-CEREVISIAE; PHYLOGENETIC ANALYSIS; CIONA-INTESTINALIS; ANIMAL GENOMES; LARGE-SCALE; EVOLUTION; AMPHIOXUS; HYPOTHESIS AB The hypothesis that the relatively large and complex vertebrate genome was created by two ancient, whole genome duplications has been hotly debated, but remains unresolved. We reconstructed the evolutionary relationships of all gene families from the complete gene sets of a tunicate, fish, mouse, and human, and then determined when each gene duplicated relative to the evolutionary tree of the organisms. We confirmed the results of earlier studies that there remains little signal of these events in numbers of duplicated genes, gene tree topology, or the number of genes per multigene family. However, when we plotted the genomic map positions of only the subset of paralogous genes that were duplicated prior to the fish - tetrapod split, their global physical organization provides unmistakable evidence of two distinct genome duplication events early in vertebrate evolution indicated by clear patterns of four-way paralogous regions covering a large part of the human genome. Our results highlight the potential for these large-scale genomic events to have driven the evolutionary success of the vertebrate lineage. C1 Dept Energy, Joint Genome Inst, Evolutionary Genom Dept, Walnut Creek, CA USA. Lawrence Berkeley Lab, Walnut Creek, CA USA. Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA. RP Dehal, P (reprint author), Dept Energy, Joint Genome Inst, Evolutionary Genom Dept, Walnut Creek, CA USA. EM PSDehal@LBL.gov; JLBoore@LBL.gov NR 51 TC 635 Z9 651 U1 8 U2 64 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1544-9173 J9 PLOS BIOL JI PLoS. Biol. PD OCT PY 2005 VL 3 IS 10 BP 1700 EP 1708 AR e314 DI 10.1371/journal.pbio.0030314 PG 9 WC Biochemistry & Molecular Biology; Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics GA 971SJ UT WOS:000232404600005 PM 16128622 ER PT J AU Rodionov, DA Dubchak, IL Arkin, AP Alm, EJ Gelfand, MS AF Rodionov, DA Dubchak, IL Arkin, AP Alm, EJ Gelfand, MS TI Dissimilatory metabolism of nitrogen oxides in bacteria: Comparative reconstruction of transcriptional networks SO PLOS COMPUTATIONAL BIOLOGY LA English DT Article ID HYBRID-CLUSTER PROTEIN; DESULFOVIBRIO-VULGARIS HILDENBOROUGH; RHODOBACTER-SPHAEROIDES 2.4.3; NITRIC-OXIDE; ESCHERICHIA-COLI; FLAVOHEMOGLOBIN GENE; NITROSATIVE STRESS; PRISMANE-PROTEIN; PSEUDOMONAS-AERUGINOSA; CAMPYLOBACTER-JEJUNI AB Bacterial response to nitric oxide (NO) is of major importance since NO is an obligatory intermediate of the nitrogen cycle. Transcriptional regulation of the dissimilatory nitric oxides metabolism in bacteria is diverse and involves FNR-like transcription factors HcpR, DNR, and NnrR; two-component systems NarXL and NarQP; NO-responsive activator NorR; and nitrite-sensitive repressor NsrR. Using comparative genomics approaches, we predict DNA-binding motifs for these transcriptional factors and describe corresponding regulons in available bacterial genomes. Within the FNR family of regulators, we observed a correlation of two specificity-determining amino acids and contacting bases in corresponding DNA recognition motif. Highly conserved regulon HcpR for the hybrid cluster protein and some other redox enzymes is present in diverse anaerobic bacteria, including Clostridia, Thermotogales, and delta-proteobacteria. NnrR and DNR control denitrification in alpha- and beta-proteobacteria, respectively. Sigma-54-dependent NorR regulon found in some gamma- and beta-proteobacteria contains various enzymes involved in the NO detoxification. Repressor NsrR, which was previously known to control only nitrite reductase operon in Nitrosomonas spp., appears to be the master regulator of the nitric oxides' metabolism, not only in most gamma- and beta-proteobacteria (including well-studied species such as Escherichia coli), but also in Gram-positive Bacillus and Streptomyces species. Positional analysis and comparison of regulatory regions of NO detoxification genes allows us to propose the candidate NsrR-binding motif. The most conserved member of the predicted NsrR regulon is the NO-detoxifying flavohemoglobin Hmp. In enterobacteria, the regulon also includes two nitrite-responsive loci, nipAB (hcp-hcr) and nipC (dnrN), thus confirming the identity of the effector, i.e. nitrite. The proposed NsrR regulons in Neisseria and some other species are extended to include denitrification genes. As the result, we demonstrate considerable interconnection between various nitrogen-oxides-responsive regulatory systems for the denitrification and NO detoxification genes and evolutionary plasticity of this transcriptional network. C1 Russian Acad Sci, Inst Informat Transmiss Prob, Moscow, Russia. Lawrence Berkeley Lab, Genom Div, Berkeley, CA USA. Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA USA. GosNIIGenet, State Sci Ctr, Moscow, Russia. Moscow MV Lomonosov State Univ, Dept Bioengn & Bioinformat, Moscow, Russia. RP Rodionov, DA (reprint author), Russian Acad Sci, Inst Informat Transmiss Prob, Moscow, Russia. EM rodionov@iitp.ru RI Arkin, Adam/A-6751-2008; Gelfand, Mikhail/F-3425-2012; OI Arkin, Adam/0000-0002-4999-2931; Rodionov, Dmitry/0000-0002-0939-390X NR 62 TC 167 Z9 170 U1 4 U2 21 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 OCT PY 2005 VL 1 IS 5 BP 415 EP 431 AR e55 DI 10.1371/journal.pcbi.0010055 PG 17 WC Biochemical Research Methods; Mathematical & Computational Biology SC Biochemistry & Molecular Biology; Mathematical & Computational Biology GA 003WQ UT WOS:000234713100008 PM 16261196 ER PT J AU Haycraft, CJ Banizs, B Aydin-Son, Y Zhang, QH Michaud, EJ Yoder, BK AF Haycraft, CJ Banizs, B Aydin-Son, Y Zhang, QH Michaud, EJ Yoder, BK TI Gli2 and Gli3 localize to cilia and require the intra-flagellar transport protein polaris for processing and function SO PLOS GENETICS LA English DT Article ID POLYCYSTIC KIDNEY-DISEASE; INTRAFLAGELLAR TRANSPORT; NEGATIVE REGULATOR; MOUSE; HEDGEHOG; GENE; MUTATION; SHH; MICE; LIMB AB Intraflagellar transport (IFT) proteins are essential for cilia assembly and have recently been associated with a number of developmental processes, such as left-right axis specification and limb and neural tube patterning. Genetic studies indicate that IFT proteins are required for Sonic hedgehog (Shh) signaling downstream of the Smoothened and Patched membrane proteins but upstream of the Glioma (Gli) transcription factors. However, the role that IFT proteins play in transduction of Shh signaling and the importance of cilia in this process remain unknown. Here we provide insights into the mechanism by which defects in an IFT protein, Tg737/Polaris, affect Shh signaling in the murine limb bud. Our data show that loss of Tg737 results in altered Gli3 processing that abrogates Gli3-mediated repression of GIN transcriptional activity. In contrast to the conclusions drawn from genetic analysis, the activity of GIN and truncated forms of Gli3 (Gli3R) are unaffected in Tg737 mutants at the molecular level, indicating that Tg737/Polaris is differentially involved in specific activities of the Gli proteins. Most important, a negative regulator of Shh signaling, Suppressor of fused, and the three full-length Gli transcription factors localize to the distal tip of cilia in addition to the nucleus. Thus, our data support a model where cilia have a direct role in Gli processing and Shh signal transduction. C1 Univ Alabama, Dept Cell Biol, Birmingham, AL 35294 USA. Univ Tennessee, Grad Sch Genome Sci & Technol, Oak Ridge Natl Lab, Knoxville, TN USA. Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN USA. RP Yoder, BK (reprint author), Univ Alabama, Dept Cell Biol, Birmingham, AL 35294 USA. EM byoder@uab.edu RI AYDIN SON, Yesim/F-5879-2011 OI AYDIN SON, Yesim/0000-0002-8118-4272 FU NIDDK NIH HHS [T32 DK007545, P30 DK074038, T32 DK07545] NR 33 TC 455 Z9 469 U1 2 U2 17 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1553-7390 J9 PLOS GENET JI PLoS Genet. PD OCT PY 2005 VL 1 IS 4 BP 480 EP 488 AR e53 DI 10.1371/journal.pgen.0010053 PG 9 WC Genetics & Heredity SC Genetics & Heredity GA 003XE UT WOS:000234714800008 PM 16254602 ER PT J AU Dauter, Z AF Dauter, Z TI Efficient use of synchrotron radiation for macromolecular diffraction data collection SO PROGRESS IN BIOPHYSICS & MOLECULAR BIOLOGY LA English DT Review DE synchrotron radiation; diffraction data collection; macromolecular crystals ID DAMAGE; CRYSTALLOGRAPHY; QUALITY AB In recent years, number of X-ray synchrotron beam lines dedicated to collecting diffraction data from macromolecular crystals has exceeded 50. Indeed, today most protein and nucleic acid crystal structures are solved and refined based on the synchrotron data. Collecting diffraction data on a synchrotron beam line involves many technical points, but it is not a mere technicality. Even though the available hardware and software have become more advanced and user-friendly, it is always beneficial if the experimenter is aware of the problems involved in the data collection process and can make informed decisions leading to the highest possible quality of the acquired diffraction data. Various factors, important for the success of data collection experiments and their relevance for different kinds of applications, are discussed. (c) 2004 Elsevier Ltd. All rights reserved. C1 Brookhaven Natl Lab, Synchrotron Radiat Res Sect, MCL, Natl Canc Inst, Upton, NY 11973 USA. RP Dauter, Z (reprint author), Brookhaven Natl Lab, Synchrotron Radiat Res Sect, MCL, Natl Canc Inst, Bldg 725A-X9, Upton, NY 11973 USA. EM dauter@anl.gov NR 22 TC 13 Z9 16 U1 0 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0079-6107 J9 PROG BIOPHYS MOL BIO JI Prog. Biophys. Mol. Biol. PD OCT PY 2005 VL 89 IS 2 BP 153 EP 172 DI 10.1016/j.pbiomolbio.2004.09.004 PG 20 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA 940OL UT WOS:000230153700003 PM 15910916 ER PT J AU Weese, RK Burnham, AK AF Weese, RK Burnham, AK TI Coefficient of thermal expansion of the beta and delta polymorphs of HMX SO PROPELLANTS EXPLOSIVES PYROTECHNICS LA English DT Article DE HMX; solid-solid phase transition; kinetics; thermal expansion; DSC; TMA ID SOLID-PHASE-TRANSITION; OCTAHYDRO-1,3,5,7-TETRANITRO-1,3,5,7-TETRAZOCINE; KINETICS; GROWTH AB Dimensional changes related to temperature cycling of the beta and delta polymorphs of HMX (octahydro-1,3,5,7-tetranitro-1,3,5,7- tetrazocine) are important for a variety of applications. coefficient of thermal expansion (CTE) of beta and delta phases are measured over a temperature range of -20 degrees C to 215 degrees C by thermo-mechanical analysis (TMA). Dimensional changes associated with the phase transition were also measured, and the time-temperature dependence of the dimensional change is consistent with phase transition kinetics measured earlier by differential scanning calorimetry (DSC). One HMX sample measured by TMA during its initial heating and again three days later during a second heating showed the beta-to-delta phase transition a second time, thereby indicating back conversion from delta-to-beta phase HMX during those three days. DSC was used to measure kinetics of the delta-to-beta back conversion. The most successful approach was to first heat the material to create the delta phase, then after a given period at room temperature, measure the heat absorbed during a second pass through the beta-to-delta phase transition. Back conversion at room temperature follows nucleation-growth kinetics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Weese, RK (reprint author), Lawrence Livermore Natl Lab, POB 808,L-282, Livermore, CA 94550 USA. EM weese2@llnl.gov NR 25 TC 21 Z9 22 U1 0 U2 8 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0721-3115 J9 PROPELL EXPLOS PYROT JI Propellants Explos. Pyrotech. PD OCT PY 2005 VL 30 IS 5 BP 344 EP 350 DI 10.1002/prep.200500024 PG 7 WC Chemistry, Applied; Engineering, Chemical SC Chemistry; Engineering GA 982FM UT WOS:000233143400005 ER PT J AU Ali, AN Sandstrom, MM Oschwald, DM Moore, KM Son, SE AF Ali, AN Sandstrom, MM Oschwald, DM Moore, KM Son, SE TI Laser ignition of DAAF, DHT and DAATO(3.5) SO PROPELLANTS EXPLOSIVES PYROTECHNICS LA English DT Article DE laser ignition; high-nitrogen; DHT; DAATO(3.5); DAAF; HMX; gas phase; initiation; CO2 ID SOLID-FUEL; EXPLOSIVES AB CO2 laser ignition experimental results are reported for the high-nitrogen materials 3,6-dihydrazino-1,2,4,5-tetrazine (DHT) 3,3'-diamino-4,4'-azoxyfurazan (DAAF), and mixed N-oxides of 3,3'-azo-bis(6-amino-1,2,4,5-tetraziiie) (DAATO(3.5), where the "3.5" indicates the average oxide content) at a maximum irradiance level of approximately 140 W/cm(2). Diagnostics include a photodiode. indium antimonide (InSb) IR detector, high speed (HS) video and a CO2 phtotodetector. "First light" is measured for DAATO(3.5) and DAAF, however, due to the low visible light emission of the gas phase, thermal runaway, as measured by the InSb, is used as the ignition criterion for DHT. Ignition in the gas phase is captured by the high speed camera. It is observed that an increase in laser irradiance results in an increase in ignition and flame stand-off distance for DAATO(3.5). The high-nitrogen material laser er ignition results are compared to the common nitramine explosive, octahydro-1,3.5,7-tetranitro-1,3,5,7-tetrazocine (HMX). Laser ignition delays for the different high-nitrogen materials are also compared in the context of Differential Scanning Calorimetry (DSC) data. It is determined that DSC onset temperature, while a rough indicator of ignition delay trends, is not the equivalent of a direct measure of ignition temperature. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Ali, AN (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. EM arif@lanl.gov OI Son, Steven/0000-0001-7498-2922 NR 18 TC 5 Z9 5 U1 2 U2 8 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0721-3115 J9 PROPELL EXPLOS PYROT JI Propellants Explos. Pyrotech. PD OCT PY 2005 VL 30 IS 5 BP 351 EP 355 DI 10.1002/prep.200500025 PG 5 WC Chemistry, Applied; Engineering, Chemical SC Chemistry; Engineering GA 982FM UT WOS:000233143400006 ER PT J AU Souers, PC Vitello, P AF Souers, PC Vitello, P TI Analytic model of reactive flow SO PROPELLANTS EXPLOSIVES PYROTECHNICS LA English DT Article DE reactive flow model; reactive flow; detonation rate; size effect; diameter effect AB A simple analytic model allows prediction of rate constants and size effect behavior before a hydrocode run, if size effect data exist. It utilizes detonation velocity, average detonation rate, pressure and energy at infinite radius. This allows the derivation of a generalized radius, which becomes larger as the explosive becomes more non-ideal. The model is applied to near-ideal PBX 9404, in-between ANFO and most non-ideal AN. The power of the pressure declines from 2.3, and 1.5 to 0.8 across this set. The power of the burn fraction, F is 0.8, 0 and 0, so that an F-term is important only for the ideal explosives. The size effect shapes change from concave-down to nearly straight to concave-up. Failure is associated with ideal explosives when the calculated detonation velocity turns in a double-valued way. The effect of the power of the pressure may be simulated by including a pressure cut-off in the detonation rate. The model allows comparison of a wide spectrum of explosives providing that a single detonation rate is feasible. C1 Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. RP Souers, PC (reprint author), Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. EM souers1@llnl.gov NR 6 TC 3 Z9 3 U1 0 U2 2 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0721-3115 J9 PROPELL EXPLOS PYROT JI Propellants Explos. Pyrotech. PD OCT PY 2005 VL 30 IS 5 BP 381 EP 385 DI 10.1002/prep.200500029 PG 5 WC Chemistry, Applied; Engineering, Chemical SC Chemistry; Engineering GA 982FM UT WOS:000233143400010 ER PT J AU Pedelacq, JD Waldo, GS Cabantous, S Liong, EC Terwilliger, TC AF Pedelacq, JD Waldo, GS Cabantous, S Liong, EC Terwilliger, TC TI Structural and functional features of an NDP kinase from the hyperthermophile crenarchaeon Pyrobaculum aerophilum SO PROTEIN SCIENCE LA English DT Article DE nucleoside diphosphate kinase; hyperthermophile; Pyrobaculum aerophilum; directed evolution; mutagenesis; X-ray crystallography ID NUCLEOSIDE DIPHOSPHATE KINASE; X-RAY STRUCTURE; CRYSTAL-STRUCTURE; DICTYOSTELIUM-DISCOIDEUM; DROSOPHILA-MELANOGASTER; ACTIVATION; RESOLUTION; STABILITY; PROTEINS; INHIBITION AB Nucleoside diphosphate (NDP) kinases are ubiquitous enzymes that transfer gamma-phosphates from nucleoside triphosphates to nucleoside diphosphates via a ping-pong mechanism. The important role of this large family of enzymes in controlling cellular functions and developmental processes along with their crystallizability has made them good candidates for structural studies. We recently determined the structure of an evolved version of an NDP kinase from Pyrobaculum aerophilum, an extreme thermophile. This NDP kinase has similarity to the 42 other NDP kinases deposited in the Protein Data Bank (PDB) but differs significantly in sequence, structure, and biophysical properties. The P. aerophilum NDP kinase sequence contains two unique segments not present in other NDP kinases, comprising residues 66-100 and 156-165. We show that deletion mutants of the P. aerophilum NDP kinase lacking either or both of these inserts have an altered substrate specificity, allowing dGTP as the phosphate donor. A structural analysis of the evolved NDP kinase in conjunction with mutagenesis experiments suggests that the substrate specificity of the P. aerophilum NDP kinase is related to the presence of these two inserts. C1 Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Biophys Grp, Los Alamos, NM 87545 USA. RP Pedelacq, JD (reprint author), Los Alamos Natl Lab, Biosci Div, MS-M888, Los Alamos, NM 87545 USA. EM jpdlcq@lanl.gov RI Pedelacq, Jean-Denis/C-6053-2011; Terwilliger, Thomas/K-4109-2012 OI Terwilliger, Thomas/0000-0001-6384-0320 NR 46 TC 8 Z9 8 U1 0 U2 0 PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT PI WOODBURY PA 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2924 USA SN 0961-8368 J9 PROTEIN SCI JI Protein Sci. PD OCT PY 2005 VL 14 IS 10 BP 2562 EP 2573 DI 10.1110/ps.051664205 PG 12 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 969KQ UT WOS:000232233400007 PM 16195547 ER PT J AU Xu, QS Roberts, RJ Guo, HC AF Xu, QS Roberts, RJ Guo, HC TI Two crystal forms of the restriction enzyme MspI-DNA complex show the same novel structure SO PROTEIN SCIENCE LA English DT Article DE restriction enzyme; MspI; protein-DNA complex; crystal structure ID SUBSTRATE-ASSISTED CATALYSIS; IRREGULAR NUCLEIC-ACIDS; ANGSTROM RESOLUTION; COGNATE DNA; ENDONUCLEASE REVEALS; MODIFICATION SYSTEM; ECORV ENDONUCLEASE; PVUII ENDONUCLEASE; ELECTRON-DENSITY; RECOGNITION AB The crystal structure of the Type IIP restriction endonuclease MspI bound to DNA containing its cognate recognition sequence has been determined in both monoclinic and orthorhombic space. groups. Significantly, these two independent crystal forms present an identical structure of a novel monomer-DNA complex, suggesting a functional role for this novel enzyme-DNA complex. In both crystals, MspI interacts with the CCGG DNA recognition sequence as a monomer, using an asymmetric mode of recognition by two different structural motifs in a single polypeptide. In the crystallographic asymmetric unit, the two DNA molecules in the two MspI-DNA complexes appear to stack with each other forming an end-to-end pseudo-continuous 19-mer duplex. They are primarily B-form and no major bends or kinks are observed. For DNA recognition, most of the specific contacts between the enzyme and the DNA are preserved in the orthorhombic structure compared with the monoclinic structure. A cation is observed near the catalytic center in the monoclinic structure at a position homologous to the 74/45 metal site of EcoRV, and the orthorhombic structure also shows signs of this same cation. However, the coordination ligands of the metal are somewhat different from those of the 74/45 metal site of EcoRV. Combined with structural information from other solved structures of Type II restriction enzymes, the possible relationship between the structures of the enzymes and their cleavage behaviors is discussed. C1 Boston Univ, Sch Med, Dept Physiol & Biophys, Boston, MA 02118 USA. New England Biolabs Inc, Beverly, MA 01915 USA. RP Xu, QS (reprint author), Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. EM QSXu@lbl.gov NR 59 TC 11 Z9 11 U1 0 U2 0 PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT PI WOODBURY PA 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2924 USA SN 0961-8368 J9 PROTEIN SCI JI Protein Sci. PD OCT PY 2005 VL 14 IS 10 BP 2590 EP 2600 DI 10.1110/ps.051565105 PG 11 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 969KQ UT WOS:000232233400010 PM 16195548 ER PT J AU Shen, YF Kim, J Strittmatter, EF Jacobs, JM Camp, DG Fang, RH Tolie, N Moore, RJ Smith, RD AF Shen, YF Kim, J Strittmatter, EF Jacobs, JM Camp, DG Fang, RH Tolie, N Moore, RJ Smith, RD TI Characterization of the human blood plasma proteome SO PROTEOMICS LA English DT Article DE capillary LC; 2-D LC; human plasma; MS/MS ID TANDEM MASS-SPECTROMETRY; HUMAN SERUM PROTEOME; LIQUID-CHROMATOGRAPHY; PROSTATE-CANCER; YEAST PROTEOME; IDENTIFICATION; BIOMARKER; PROTEINS; ONLINE; VALIDATION AB We describe methods for broad characterization of the human plasma proteome. The combination of stepwise immunoglobulin G (IgG) and albumin protein depletion by affinity chromatography and ultrahigh-efficiency capillary liquid chromatography separations coupled to ion trap-tandem mass spectrometry enabled identification of 2392 proteins from a single plasma sample with an estimated confidence level of > 94%, and an additional 2198 proteins with an estimated confidence level of 80%. The relative abundances of the identified proteins span a range of over eight orders of magnitude in concentration (< 30 mu g/mL to similar to 30 mg/mL), facilitated by the attomole-level sensitivity of the analysis methods. More than 80% of the observed proteins demonstrate interactions with IgG and/or albumin, and the human plasma protein loss in the affinity chromatography/strong cation exchange/reversed-phase liquid chromatographytandem mass spectrometry methodology was investigated in detail. The results of this study provide a basis for a wide range of plasma proteornics studies, including broad quantitation of relative abundances in comparative studies of the identification of novel protein disease markers, as well as further studies of protein-protein interactions. C1 Pacific NW Natl Lab, Biol Sci Div, Richland, WA 99352 USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Pacific NW Natl Lab, Biol Sci Div, POB 999, Richland, WA 99352 USA. EM rds@pnl.gov RI Kim, Jeongkwon/C-6230-2012; Smith, Richard/J-3664-2012 OI Kim, Jeongkwon/0000-0002-0087-1151; Smith, Richard/0000-0002-2381-2349 FU NCRR NIH HHS [RR 18522]; NIGMS NIH HHS [U54 GM-62119-02, U54 GM062119] NR 36 TC 123 Z9 131 U1 2 U2 13 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1615-9853 EI 1615-9861 J9 PROTEOMICS JI Proteomics PD OCT PY 2005 VL 5 IS 15 BP 4034 EP 4045 DI 10.1002/pmic.200401246 PG 12 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 978TN UT WOS:000232896000023 PM 16152657 ER PT J AU Uppala, SM Kallberg, PW Simmons, AJ Andrae, U Bechtold, VD Fiorino, M Gibson, JK Haseler, J Hernandez, A Kelly, GA Li, X Onogi, K Saarinen, S Sokka, N Allan, RP Andersson, E Arpe, K Balmaseda, MA Beljaars, ACM Van De Berg, L Bidlot, J Bormann, N Caires, S Chevallier, F Dethof, A Dragosavac, M Fisher, M Fuentes, M Hagemann, S Holm, E Hoskins, BJ Isaksen, L Janssen, PAEM Jenne, R McNally, AP Mahfouf, JF Morcrette, JJ Rayner, NA Saunders, RW Simon, P Sterl, A Trenberth, KE Untch, A Vasiljevic, D Viterbo, P Woollen, J AF Uppala, SM Kallberg, PW Simmons, AJ Andrae, U Bechtold, VD Fiorino, M Gibson, JK Haseler, J Hernandez, A Kelly, GA Li, X Onogi, K Saarinen, S Sokka, N Allan, RP Andersson, E Arpe, K Balmaseda, MA Beljaars, ACM Van De Berg, L Bidlot, J Bormann, N Caires, S Chevallier, F Dethof, A Dragosavac, M Fisher, M Fuentes, M Hagemann, S Holm, E Hoskins, BJ Isaksen, L Janssen, PAEM Jenne, R McNally, AP Mahfouf, JF Morcrette, JJ Rayner, NA Saunders, RW Simon, P Sterl, A Trenberth, KE Untch, A Vasiljevic, D Viterbo, P Woollen, J TI The ERA-40 re-analysis SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY LA English DT Review DE data assimilation; numerical weather prediction; observing system ID DATA ASSIMILATION SYSTEM; 4-DIMENSIONAL VARIATIONAL ASSIMILATION; SPECIAL SENSOR MICROWAVE/IMAGER; ECMWF FORECASTING SYSTEM; RANGE-WEATHER-FORECASTS; SIGNIFICANT WAVE HEIGHT; SOUTHERN-HEMISPHERE; GLOBAL ANALYSES; SURFACE-TEMPERATURE; OCEAN ALGORITHM AB ERA-40 is a re-analysis of meteorological observations from September 1957 to August 2002 produced by the European Centre for Mediumw-Range Weather Forecasts (ECMWF) in collaboration with many institutions. The observing system changed considerably over this re-analysis period, with assimilable data provided by a succession of satellite-borne instruments from the 1970s onwards, supplemented by increasing numbers of observations from aircraft, ocean-buoys and other surface platforms, but with a declining number of radiosonde ascents since the late 1980s. The observations used in ERA-40 were accumulated from many sources. The first part of this paper describes the data acquisition and the principal changes in data type and coverage over the period. It also describes the data assimilation system used for ERA-40. This benefited from many of the changes introduced into operational forecasting since the mid-1990s, when the systems used for the 15-year ECMWF re-analysis (ERA-15) and the National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) re-analysis were implemented. Several of the improvements are discussed. General aspects of the production of the analyses are also summarized. A number of results indicative of the overall performance of the data assimilation system, and implicitly of the observing system, are presented and discussed. The comparison of background (short-range) forecasts and analyses with observations, the consistency of the global mass budget, the magnitude of differences between analysis and background fields and the accuracy of medium-range forecasts run from the ERA-40 analyses are illustrated. Several results demonstrate the marked improvement that was made to the observing system for the Southern hemisphere in the 1970s. particularly towards the end of the decade. In contrast. the synoptic quality of the analysis for the northern hemisphere is sufficient to provide forecasts that remain skilful well into the medium range for all years. Two particular problems are also examined: excessive precipitation over tropical oceans and a too strong Brewer-Dobson circulation, both of which are pronounced in later years. Several other aspects of the quality of the re-analyses revealed by monitoring and validation studies are summarized. Expectations that the 'second-generation' ERA-40 re-analysis would provide products that are better than those from the first generation ERA-15 and NCEP/NCAR re-analyses are found to have been met in most cases. C1 European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England. Lawrence Livermore Natl Lab, Program Climate Model Diagnosis & Intercomparison, Livermore, CA USA. Chinese Acad Sci, Inst Atmospher Phys, Beijing, Peoples R China. Japan Meteorol Agcy, Tokyo, Japan. Univ Reading, Environm Syst Sci Ctr, Reading RG6 2AH, Berks, England. Max Planck Inst Meteorol, Hamburg, Germany. European Org Exploitat Meteorol Satellites, Darmstadt, Germany. Koninklijk Nederlands Meteorol Inst, De Bilt, Netherlands. Univ Reading, Dept Meteorol, Reading RG6 2AH, Berks, England. Natl Ctr Atmospher Res, Boulder, CO 80307 USA. Meteorol Off, Exeter, Devon, England. Meteo France, Toulouse, France. NOAA, NWS, Natl Ctr Environm Predict, Washington, DC 20230 USA. RP European Ctr Medium Range Weather Forecasts, Shinfield Pk, Reading RG2 9AX, Berks, England. EM adrian.simmons@ecmwf.int RI Allan, Richard/B-5782-2008; Viterbo, Pedro/B-7184-2008; zhou, zack/F-9663-2011; Trenberth, Kevin/A-5683-2012; Fiorino, Michael/N-4150-2014; Chevallier, Frederic/E-9608-2016; OI Allan, Richard/0000-0003-0264-9447; Viterbo, Pedro/0000-0001-6587-3062; Trenberth, Kevin/0000-0002-1445-1000; Fiorino, Michael/0000-0002-2819-8157; Chevallier, Frederic/0000-0002-4327-3813; Caires, Sofia/0000-0002-8201-8313; Sterl, Andreas/0000-0003-3457-0434 NR 139 TC 4454 Z9 4632 U1 43 U2 326 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-9009 EI 1477-870X J9 Q J ROY METEOR SOC JI Q. J. R. Meteorol. Soc. PD OCT PY 2005 VL 131 IS 612 BP 2961 EP 3012 DI 10.1256/qj.04.176 PN B PG 52 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 007HE UT WOS:000234958700001 ER PT J AU Holroyd, RA Nishikawa, M Itoh, K AF Holroyd, RA Nishikawa, M Itoh, K TI Rates and energy of reactions of charged species in supercritical xenon SO RADIATION PHYSICS AND CHEMISTRY LA English DT Article ID ELECTRON-ATTACHMENT; CARBON-DIOXIDE; ETHANE; RADIOLYSIS; MOBILITY; FLUIDS AB Pulse radiolysis was used to study the rates of several electron transfer reactions in supercritical Xe over a range of pressures. The rates of electron attachment to oxygen and 4,4'-bipyridine were also studied the latter reaction is sufficiently fast to compete with electron-ion recombination, which is very fast in supercritical Xe, Electron transfer from 4,4'-bipyridine anion to benzoquinone is diffusion controlled. A peak in the rate is observed in the pressure region of maximum compressibility as expected for diffusion control. The rates of electron transfer from 4.4'-bipyridine anion and from hexafluorobenzene anion to O-2 are an order of magnitude slower than expected for diffusion, The energetics of these reactions is discussed. (C) 2005 Elsevier Ltd. All rights reserved. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Kanagawa Inst Technol, Fac Engn, Atsugi 2430292, Japan. Univ Tokyo, Dept Pure & Appl Sci, Tokyo 1538902, Japan. RP Holroyd, RA (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM holroyd@bnl.gov NR 16 TC 1 Z9 1 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-806X J9 RADIAT PHYS CHEM JI Radiat. Phys. Chem. PD OCT-NOV PY 2005 VL 74 IS 3-4 BP 146 EP 151 DI 10.1016/j.radphyschem.2005-04.007 PG 6 WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical SC Chemistry; Nuclear Science & Technology; Physics GA 964NE UT WOS:000231887000005 ER PT J AU Coleman, MA Yin, E Peterson, LE Nelson, D Sorensen, K Tucker, JD Wyrobek, AJ AF Coleman, MA Yin, E Peterson, LE Nelson, D Sorensen, K Tucker, JD Wyrobek, AJ TI Low-dose irradiation alters the transcript profiles of human lymphoblastoid cells including genes associated with cytogenetic radioadaptive response SO RADIATION RESEARCH LA English DT Article ID NUCLEOTIDE EXCISION-REPAIR; INDUCED ADAPTIVE RESPONSE; HUMAN-MELANOMA CELLS; BREAST-CANCER CELLS; C-MYC ALTERS; IONIZING-RADIATION; DNA-DAMAGE; INDUCED RADIORESISTANCE; EXPRESSION PROFILE; GAMMA-IRRADIATION AB Low-dose ionizing radiation alters the gene expression profiles of mammalian cells, yet there is little understanding of the underlying cellular mechanisms responsible for these changes or of their consequences for genomic stability. We investigated the cytogenetic adaptive response of human lymphoblastoid cell lines exposed to 5 cGy (priming dose) followed by 2 Gy (challenge dose) compared to cells that received a single 2-Gy dose to (a) determine how the priming dose influences subsequent gene transcript expression in reproducibly adapting and non-adapting cell lines, and (b) identify gene transcripts that are associated with reductions in the magnitude of chromosomal damage after the challenge dose. The transcript profiles were evaluated using oligonucleotide arrays and RNA obtained 4 h after the challenge dose. A set of 145 genes (false discovery rate = 5%) with transcripts that were affected by the 5-cGy priming dose fell into two categories: (a) a set of common genes that were similarly modulated by the 5-cGy priming dose irrespective of whether the cells subsequently adapted or not and (b) genes with differential transcription in accordance with the cell lines that showed either adaptive or non-adaptive outcomes. The common priming-dose response genes showed up-regulation for protein synthesis genes and down-regulation of metabolic and signal transduction genes (> 10-fold differences). The genes associated with subsequent adaptive and non-adaptive outcomes involved DNA repair, stress response, cell cycle control and apoptosis. Our findings support the importance of TP53-related functions in the control of the low-dose cytogenetic radioadaptive response and suggest that certain low-dose-induced alterations in cellular functions are predictive for the risk of subsequent genomic damage. (c) 2005 by Radiation Research Society. C1 Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Div Biomed Sci, Biosci Directorate, Livermore, CA 94551 USA. Baylor Coll Med, Dept Med, Houston, TX 77030 USA. RP Wyrobek, AJ (reprint author), Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Div Biomed Sci, Biosci Directorate, L-448,7000 East Ave, Livermore, CA 94551 USA. EM wyrobek1@llnl.gov OI Coleman, Matthew/0000-0003-1389-4018; Peterson, Leif/0000-0002-1187-0883 NR 84 TC 87 Z9 99 U1 0 U2 2 PU RADIATION RESEARCH SOC PI OAK BROOK PA 820 JORIE BOULEVARD, OAK BROOK, IL 60523 USA SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD OCT PY 2005 VL 164 IS 4 BP 369 EP 382 DI 10.1667/RR3356.1 PN 1 PG 14 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA 967VT UT WOS:000232120000003 PM 16187739 ER PT J AU Sutherland, BM Cuomo, NC Bennett, PV AF Sutherland, BM Cuomo, NC Bennett, PV TI Induction of anchorage-independent growth in primary human cells exposed to protons or HZE ions separately or in dual exposures SO RADIATION RESEARCH LA English DT Article ID IONIZING-RADIATION; TRANSFORMATION AB Travelers on space missions will be exposed to a complex radiation environment that includes protons and heavy charged particles. Since protons are present at much higher levels than are heavy ions, the most likely scenario for cellular radiation exposure will be proton exposure followed by a hit by a heavy ion. Although the effects of individual ion species on human cells are being investigated extensively, little is known about the effects of exposure to both radiation types. One useful measure of mammalian cell damage is induction of the ability to grow in a semi-solid agar medium highly inhibitory to the growth of normal human cells, termed neoplastic transformation. Using primary human cells, we evaluated induction of soft-agar growth and survival of cells exposed to protons only or to heavy charged particles (600 MeV/nucleon silicon) only as well as of cells exposed to protons followed after a 4-day interval by silicon ions. Both ions alone efficiently transformed the human cells to anchorage-independent growth. Initial experiments indicate that the dose responses for neoplastic transformation of cells exposed to protons and then after 4 days to silicon ions appear similar to that of cells exposed to silicon ions alone. (c) 2005 by Radiation Research Society. C1 Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Sutherland, BM (reprint author), Brookhaven Natl Lab, Dept Biol, Bldg 463,50 Bell Ave, Upton, NY 11973 USA. EM bms@bnl.gov FU NCI NIH HHS [R01 CA 86897] NR 10 TC 9 Z9 9 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 820 JORIE BOULEVARD, OAK BROOK, IL 60523 USA SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD OCT PY 2005 VL 164 IS 4 BP 493 EP 496 DI 10.1667/RR3357.1 PN 2 PG 4 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA 967VU UT WOS:000232120100008 PM 16187755 ER PT J AU Ding, LH Shingyoji, M Chen, FQ Chatterjee, A Kasai, KE Chen, DJ AF Ding, LH Shingyoji, M Chen, FQ Chatterjee, A Kasai, KE Chen, DJ TI Gene expression changes in normal human skin fibroblasts induced by HZE-particle radiation SO RADIATION RESEARCH LA English DT Article ID IONIZING-RADIATION; PATTERNS; EXPOSURE; DAMAGE AB Studies have shown that radiation exposure affects global gene expression in mammalian cells. However, little is known about the effects of HZE particles on gene expression. To study these effects, human skin fibroblasts were irradiated with HZE particles of different energies and LETS. The data obtained from these experiments indicate that changes in gene expression are dependent on the energy of the radiation source. Particles with the highest energy, i.e. iron, induced the biggest expression changes in terms of numbers of genes and magnitudes of changes. Many genes were found to undergo significant expression changes after HZE-particle irradiation, including CDKN1A/p21, MDM2, TNFRSF6/fas, PCNA and RAD52. Unlike X rays, HZE particles expose cells to two types of radiation: primary ions and 8 rays. We hypothesized that the biological effects of 6 rays, which are secondary electron emissions, should resemble the effects of X rays. To explore this idea, gene expression changes between cells that had been irradiated with HZE particles and X rays were compared. The results support our hypothesis since the number of genes that commonly changed after exposure to both radiations increased as a function of particle energy. (c) 2005 by Radiation Research Society. C1 Univ Texas, SW Med Ctr, Dept Radiat Oncol, Div Mol Radiat Biol, Dallas, TX 75390 USA. Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA. Natl Inst Radiol Sci, Radiat Hazards Res Grp, Inage Ku, Chiba, Chiba 2638555, Japan. RP Chen, DJ (reprint author), Univ Texas, SW Med Ctr, Dept Radiat Oncol, Div Mol Radiat Biol, 5801 Forest Pk Rd, Dallas, TX 75390 USA. EM djchen@lbl.gov NR 15 TC 31 Z9 31 U1 0 U2 1 PU RADIATION RESEARCH SOC PI OAK BROOK PA 820 JORIE BOULEVARD, OAK BROOK, IL 60523 USA SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD OCT PY 2005 VL 164 IS 4 BP 523 EP 526 DI 10.1667/RR3350.1 PN 2 PG 4 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA 967VU UT WOS:000232120100014 PM 16187761 ER PT J AU Chang, PY Bjornstad, KA Rosen, CJ McNamara, MP Mancini, R Goldstein, LE Chylack, LT Blakely, EA AF Chang, PY Bjornstad, KA Rosen, CJ McNamara, MP Mancini, R Goldstein, LE Chylack, LT Blakely, EA TI Effects of iron ions, protons and X rays on human lens cell differentiation SO RADIATION RESEARCH LA English DT Article ID ACCELERATED HEAVY-PARTICLES; RADIATION CATARACT; GENE-EXPRESSION; CDK INHIBITORS; P21; DAMAGE; GROWTH; MICE; IRRADIATION; EPITHELIUM AB We have investigated molecular changes in cultured differentiating human lens epithelial cells exposed to high-energy accelerated iron-ion beams as well as to protons and X rays. In this paper, we present results on the effects of radiation on gene families that include or are related to DNA damage, cell cycle regulators, cell adhesion molecules, and cell cytoskeletal function. A limited microarray survey with a panel of cell cycle-regulated genes illustrates that irradiation with protons altered the gene expression pattern of human lens epithelial cells. A focus of our work is CDKN1A (p21(CIP1/WAF1)), a protein that we demonstrate here has a role in several pathways functionally related to LET-responsive radiation damage. We quantitatively assessed RNA and protein expression in a time course before and after single 4-Gy radiation doses and demonstrated that transcription and translation of CDKN1A are both temporally regulated after exposure. Furthermore, we show qualitative differences in the distribution of CDKN1A immunofluorescence signals after exposure to X rays, protons or iron ions, suggesting that LET effects likely play a role in the misregulation of gene function in these cells. A model of molecular and cellular events is proposed to account for precataractous changes in the human lens after exposure to lowor high-LET radiations. (c) 2005 by Radiation Research Society. C1 Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA. SRI Int, Biosci Div, Menlo Pk, CA USA. Roger Williams Med Ctr, Brighton, MA USA. Brigham & Womens Hosp, Mol Aging & Dev Lab, Boston, MA USA. Brigham & Womens Hosp, Ctr Ophthalm Res, Boston, MA USA. RP Blakely, EA (reprint author), Lawrence Berkeley Natl Lab, Div Life Sci, Mail Stop 70A-1118,1 Cyclotron Rd, Berkeley, CA 94720 USA. EM eablakely@lbl.gov NR 42 TC 20 Z9 22 U1 0 U2 3 PU RADIATION RESEARCH SOC PI OAK BROOK PA 820 JORIE BOULEVARD, OAK BROOK, IL 60523 USA SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD OCT PY 2005 VL 164 IS 4 BP 531 EP 539 DI 10.1667/RR3368.1 PN 2 PG 9 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA 967VU UT WOS:000232120100016 PM 16187763 ER PT J AU Guida, P Vazquez, ME Otto, S AF Guida, P Vazquez, ME Otto, S TI Cytotoxic effects of low- and high-LET radiation on human neuronal progenitor cells: Induction of apoptosis and TP53 gene expression SO RADIATION RESEARCH LA English DT Article ID NERVOUS-SYSTEM; X-IRRADIATION; P53; DEATH; BAX; INVOLVEMENT; PROTEINS; DAMAGE; LINES AB The induction of apoptosis, TP53 expression, caspase activation and cell toxicity were investigated after exposure of cells of the human neuronal progenitor cell line Ntera2 (NT2) to low-LET radiation (gamma and X rays). The data indicates that irradiation of NT2 cells quickly induced TP53 expression, which was followed in time by an increase in caspase activity, and ultimately resulted in the induction of apoptosis. Induction of apoptosis was dependent on dose, and the highest levels were measured 48 h after exposure. For comparison, the level of apoptosis induced by high-LET particle radiation (1 GeV/nucleon iron ions) was also determined and was found to be dependent on dose. The relative biological effectiveness (RBE) was estimated from the slopes of the dose-response curves for the induction of apoptosis. The RBEmax for apoptosis 48 h after exposure was at least 3.4. In short, exposure to high-LET radiation results in a more efficient and greater induction of apoptosis in human neuronal progenitor cells than low-LET radiation. (c) 2005 by Radiation Research Society. C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. RP Vazquez, ME (reprint author), Brookhaven Natl Lab, Dept Med, 30 Bell Ave, Upton, NY 11973 USA. EM Vazquez@bnl.gov NR 28 TC 17 Z9 18 U1 0 U2 1 PU RADIATION RESEARCH SOC PI OAK BROOK PA 820 JORIE BOULEVARD, OAK BROOK, IL 60523 USA SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD OCT PY 2005 VL 164 IS 4 BP 545 EP 551 DI 10.1667/RR3367.1 PN 2 PG 7 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA 967VU UT WOS:000232120100018 PM 16187785 ER PT J AU Durante, M George, K Gialanella, G Grossi, G La Tessa, C Manti, L Miller, J Pugliese, M Scampoli, P Cucinotta, FA AF Durante, M George, K Gialanella, G Grossi, G La Tessa, C Manti, L Miller, J Pugliese, M Scampoli, P Cucinotta, FA TI Cytogenetic effects of high-energy iron ions: Dependence on shielding thickness and material SO RADIATION RESEARCH LA English DT Article ID HUMAN-LYMPHOCYTES; BIOLOGICAL EFFECTIVENESS; CHROMOSOMAL-ABERRATIONS; RADIATION; PROTECTION; METAPHASE; INDUCTION AB We report results for chromosomal aberrations in human peripheral blood lymphocytes after they were exposed to high-energy iron ions with or without shielding at the HIMAC, AGS and NSRL accelerators. Isolated lymphocytes were exposed to iron ions with energies between 200 and 5000 MeV/nucleon in the 0.1-1-Gy dose range. Shielding materials consisted of polyethylene, lucite (PMMA), carbon, aluminum and lead, with mass thickness ranging from 2 to 30 g/cm(2). After exposure, lymphocytes were stimulated to grow in vitro, and chromosomes were prematurely condensed using a phosphatase inhibitor (calyculin A). Aberrations were scored using FISH painting. The yield of total interchromosomal exchanges (including dicentrics, translocations and complex rearrangements) increased linearly with dose or fluence in the range studied. Shielding decreased the effectiveness per unit dose of iron ions. The highest RBE value was measured with the 1 GeV/nucleon iron-ion beam at NSRL. However, the RBE for the induction of aberrations apparently is not well correlated with the mean LET. When shielding thickness was increased, the frequency of aberrations per particle incident on the shield increased for the 500 MeV/nucleon ions and decreased for the 1 GeV/nucleon ions. Maximum variation at equal mass thickness was obtained with light materials (polyethylene, carbon or PMMA). Variations in the yield of chromosomal aberrations per iron particle incident on the shield follow variations in the dose per incident particle behind the shield but can be modified by the different RBE of the mixed radiation field produced by nuclear fragmentation. The results suggest that shielding design models should be benchmarked using both physics and biological data. (c) 2005 by Radiation Research Society. C1 Univ Naples Federico II, Dept Phys, I-80126 Naples, Italy. Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy. Wyle Labs, Houston, TX USA. Chalmers Univ Technol, S-41296 Gothenburg, Sweden. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA. RP Durante, M (reprint author), Univ Naples Federico II, Dipartimento Sci Fis, Via Cintia, I-80126 Naples, Italy. EM Marco.Durante@na.infn.it RI Durante, Marco/K-1315-2014; OI Durante, Marco/0000-0002-4615-553X NR 17 TC 36 Z9 36 U1 0 U2 5 PU RADIATION RESEARCH SOC PI OAK BROOK PA 820 JORIE BOULEVARD, OAK BROOK, IL 60523 USA SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD OCT PY 2005 VL 164 IS 4 BP 571 EP 576 DI 10.1667/RR3362.1 PN 2 PG 6 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA 967VU UT WOS:000232120100023 PM 16187790 ER PT J AU Miller, JH Aceves-Gaona, A Ernst, MB Haranczyk, M Gutowski, M Vorpagel, ER Dupuis, M AF Miller, JH Aceves-Gaona, A Ernst, MB Haranczyk, M Gutowski, M Vorpagel, ER Dupuis, M TI Structure and energetics of clustered damage sites SO RADIATION RESEARCH LA English DT Article ID SINGLE-STRAND BREAK; DNA-DAMAGE; FORCE-FIELD; SIMULATION; RADIATION AB Quantum calculations on duplex DNA trimers were used to model the changes in structure, hydrogen bonding, stacking properties, and electrostatic potential induced by oxidized purine bases and abasic (AP) sites. Results for oxidized purine bases were consistent with experimental data that show small structural and energetic perturbations induced by isolated 8-oxoguanine (8oG). Watson-Crick base pairing was preserved, and no major distortions of the backbone were induced. The thermal destabilization of DNA induced by 8oG was comparable to the energy of a single hydrogen bond. In contrast, AP sites caused substantial distortions of the DNA backbone that were accompanied by relocation of counterions. The loss of Watson-Crick hydrogen bonds in AP sites had the potential to destabilize DNA by 10-20 kcal/mol (0.4-0.8 eV); however, new inter- and intrastrand hydrogen bonds formed after removal of a nucleic acid base that significantly affected the energy of AP sites and introduced a strong dependence on sequence context. Quantum calculations on small DNA fragments provided starting conformations and force-field parameters for classical molecular dynamics simulations of radiation-induced single-strand breaks that most often combine hydrolysis of a phosphate-oxygen (P-O) bond with an AP site and fully or partially degraded sugar ring. P-O bond hydrolysis increased the freedom in backbone torsion angles, which allowed the broken strand to compress and partially fill the hole in the DNA created by the AP site. Results for strand breaks with a 3'phosphoglycolate were similar to those with phosphate end groups. (c) 2005 by Radiation Research Society. C1 Washington State Univ Tri Cities, Richland, WA 99354 USA. Pacific NW Natl Lab, Richland, WA 99354 USA. RP Miller, JH (reprint author), Washington State Univ Tri Cities, Richland, WA 99354 USA. EM jhmiller@tricity.wsu.edu RI Haranczyk, Maciej/A-6380-2014 OI Haranczyk, Maciej/0000-0001-7146-9568 NR 11 TC 5 Z9 5 U1 0 U2 3 PU RADIATION RESEARCH SOC PI OAK BROOK PA 820 JORIE BOULEVARD, OAK BROOK, IL 60523 USA SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD OCT PY 2005 VL 164 IS 4 BP 582 EP 585 DI 10.1667/RR3381.1 PN 2 PG 4 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA 967VU UT WOS:000232120100025 PM 16187792 ER PT J AU Brem, RF Rapelyea, JA Zisman, G Mohtashemi, K Raub, J Teal, CB Majewski, S Welch, BL AF Brem, RF Rapelyea, JA Zisman, G Mohtashemi, K Raub, J Teal, CB Majewski, S Welch, BL TI Occult breast cancer: Scintimammography with high-resolution breast-specific gamma camera in women at high risk for breast cancer SO RADIOLOGY LA English DT Article ID TC-99M SESTAMIBI SCINTIMAMMOGRAPHY; PRONE SCINTIMAMMOGRAPHY; TC-99M-SESTAMIBI SCINTIMAMMOGRAPHY; TC-99(M)-MIBI SCINTIMAMMOGRAPHY; DIAGNOSTIC-ACCURACY; MULTICENTER TRIAL; MAMMOGRAPHY; LESIONS; METHOXYISOBUTYLISONITRILE; MASSES AB PURPOSE: To prospectively evaluate a high-resolution breast-specific gamma camera for depicting occult breast cancer in women at high risk for breast cancer but with normal mammographic and physical examination findings. MATERIALS AND METHODS: Institutional Review Board approval and informed consent were obtained. The study was HIPAA, compliant. Ninety-four high-risk women (age range, 36-78 years; mean, 55 years) with normal mammographic (Breast Imaging Reporting and Data System [BI-RADS] 1 or 2) and physical examination findings were evaluated with scintimammography. After injection with 25-30 mCi (925-1110 MBq) of technetium 99m sestamibi, patients were imaged with a high-resolution small-field-of-view breast-specific gamma camera in craniocaudal and mediolateral oblique projections. Scintimammograms were prospectively classified according to focal radiotracer uptake as normal (score of 1), with no focal or diffuse uptake; benign (score of 2), with minimal patchy uptake; probably benign (score of 3), with scattered patchy uptake; probably abnormal (score of 4), with mild focal radiotracer uptake; and abnormal (score of 5), with marked focal radiotracer uptake. Mammographic breast density was categorized according to BI-RADS criteria. Patients with normal scintimammograms (scores of 1, 2, or 3) were followed up for I year with an annual mammogram, physical examination, and repeat scintimammography. Patients with abnormal scintimammograms (scores of 4 or 5) underwent ultrasonography (US), and those with focal hypoechoic lesions underwent biopsy. If no lesion was found during US, patients were followed up with scintimammography. Specific pathologic findings were compared with scintimammographic findings. RESULTS: Of 94 women, 78 (83%) had normal scintimammograms (score of 1, 2, or 3) at initial examination and 16 (17%) had abnormal scintimammograms (score of 4 or 5). Fourteen (88%) of the 16 patients had either benign findings at biopsy or no focal abnormality at US; in two (12%) patients, invasive carcinoma was diagnosed at US-guided biopsy (9 mm each at pathologic examination). CONCLUSION: High-resolution breast-specific scintimammography can depict small (< 1-cm), mammographically occult, nonpalpable lesions in women at increased risk for breast cancer not otherwise identified at mammography or physical examination. (c) RSNA, 2005. C1 George Washington Univ, Med Ctr, Breast Imaging & Intervent Ctr, Dept Radiol, Washington, DC 20037 USA. George Washington Univ, Med Ctr, Breast Care Ctr, Dept Surg, Washington, DC 20037 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. RP Brem, RF (reprint author), George Washington Univ, Med Ctr, Breast Imaging & Intervent Ctr, Dept Radiol, 2150 Penn Ave NW, Washington, DC 20037 USA. EM rbrem@mfa.gwu.edu NR 34 TC 69 Z9 70 U1 0 U2 0 PU RADIOLOGICAL SOC NORTH AMERICA PI OAK BROOK PA 820 JORIE BLVD, OAK BROOK, IL 60523 USA SN 0033-8419 J9 RADIOLOGY JI Radiology PD OCT PY 2005 VL 237 IS 1 BP 274 EP 280 DI 10.1148/radiol.2371040758 PG 7 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 965RM UT WOS:000231968000037 PM 16126919 ER PT J AU Fehl, DL Stygar, WA Chandler, GA Cuneo, ME Ruiz, CL AF Fehl, DL Stygar, WA Chandler, GA Cuneo, ME Ruiz, CL TI X-ray flux from filtered arrays of detectors without unfolding SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID DIAGNOSTICS; PLASMAS; MJ AB A simple computational method is proposed for estimating the time-dependent flux F-[Delta E](t) of an x-ray spectrum S(E,t) over domain [Delta E] from data D-k(t)(k=1,...,N) obtained by an N-channel array of filtered detectors. It is assumed that the data are related to the spectrum by a discrete, inhomogeneous, first-kind Fredholm integral equation D-k=integral S(E,t)R-k(E)dE, where R-k(E) is the known response function for each detector channel of the diagnostic. The proposed method constructs a spectral sensitivity H-LS(E) for the diagnostic array as a linear combination Sigma(k=1)(N)a(k)R(k)(E) of the responses, where the coefficients a(k) are obtained by a least-squares criterion plus a constraint. The a(k) values, once determined, apply as long as the responses are valid. The flux estimate is then simply F-LS(t)=Sigma(k=1)(N)a(k)D(k)(t), without a spectral unfold of the data. The method is useful for quick analyses of time-dependent data, for comparisons with other flux-measuring diagnostics, and for the experimental design of filtered-detector arrays. The method is applied to a five-channel array of filtered photoemissive x-ray detectors [G. A. Chandler , Rev. Sci. Instrum. 70, 561 (1999)], used for z-pinch measurements at the Z-accelerator facility [R. B. Spielman , Phys. Plasmas 5, 2105 (1998)]. Comparisons with unfold results are made, and a first-order analysis of error propagation into F-LS(t) is presented. (c) 2005 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Fehl, DL (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 21 TC 13 Z9 17 U1 1 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2005 VL 76 IS 10 AR 103504 DI 10.1063/1.2090468 PG 10 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 978EH UT WOS:000232855900011 ER PT J AU Jiang, XM Chen, Y Ji, LL Ji, Q Leung, KN AF Jiang, XM Chen, Y Ji, LL Ji, Q Leung, KN TI Development of a 27.12 MHz radio frequency driven ion source with 3 mTorr operation pressure for neutron generators SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID OPTIMIZATION; ANTENNA AB An inductively coupled rf plasma ion source has been developed for neutron generators. The ion source configuration has been optimized for low pressure operation. Both 13.56 and 27.12 MHz rf powers have been used to generate hydrogen plasma. Experimental results show that 27.12 MHz operation is more efficient than 13.56 MHz in a low pressure region. The ion source can also be operated in pulsed mode. Current density higher than 30 mA/cm(2) can be extracted from a 2-mm-diam aperture at 2 kW rf input power and 3 mTorr operation pressure. (c) 2005 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Jiang, XM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM xjiang@lbl.gov NR 12 TC 3 Z9 3 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2005 VL 76 IS 10 AR 103302 DI 10.1063/1.2113782 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 978EH UT WOS:000232855900007 ER PT J AU Leskiw, BD Kim, MH Hall, GE Suits, AG AF Leskiw, BD Kim, MH Hall, GE Suits, AG TI Reflectron velocity map ion imaging SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID ELECTRON-CAPTURE DISSOCIATION; TANDEM MASS-SPECTROMETRY; PHOTODISSOCIATION; OCS; DYNAMICS; IONIZATION AB We report the first demonstration of velocity map ion imaging in a reflectron configuration. Under these conditions, the velocity-resolving capabilities associated with velocity map ion imaging are achieved simultaneously with long flight times and the high mass resolution characteristic of reflectron time-of-flight mass spectrometers. The photodissociation of OCS at 230 nm has been used to characterize the velocity-focusing performance of the instrument. The reflectron geometry provides an increased magnification factor over conventional velocity map ion imaging. C1 Wayne State Univ, Dept Chem, Detroit, MI 48202 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. RP Suits, AG (reprint author), Wayne State Univ, Dept Chem, Detroit, MI 48202 USA. EM asuits@chem.wayne.edu RI Hall, Gregory/D-4883-2013 OI Hall, Gregory/0000-0002-8534-9783 NR 26 TC 22 Z9 22 U1 1 U2 17 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 OCT PY 2005 VL 76 IS 10 AR 104101 DI 10.1063/1.2075167 PG 6 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 978EH UT WOS:000232855900022 ER PT J AU McCarville, T Fulkerson, S Booth, R Emig, J Young, B Anderson, S Heeter, B AF McCarville, T Fulkerson, S Booth, R Emig, J Young, B Anderson, S Heeter, B TI Gated x-ray intensifier for large format simultaneous imaging SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB Some applications of gated x-ray imagers, pulsed x-ray spectroscopy, for example, benefit if image capture is simultaneous and gain is uniform over the frame. Simultaneity and uniformity are both improved when the voltage gate pulse propagation distance is as short as practical across the micro-channel-plate. This article describes a micro-channel-plate intensifier that captures a 40x100 mm(2) image in < 300 ps. A simple transmission line loss model is proposed to explain voltage loss across the micro-channel-plate. The voltage loss exponent was measured to be 0.05/cm +/- 20%, and used to predict spatial and temporal gain dependence. The spatial and temporal gain profile was measured in detail by capturing images of similar to 1 ps x-ray bursts created with a short pulse laser. The measured profile is consistent with that predicted using the loss model. (c) 2005 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP McCarville, T (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA. NR 12 TC 12 Z9 19 U1 0 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2005 VL 76 IS 10 AR 103501 DI 10.1063/1.2090328 PG 6 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 978EH UT WOS:000232855900008 ER PT J AU Bogen, KT AF Bogen, KT TI Risk analysis for environmental health triage SO RISK ANALYSIS LA English DT Article DE chemical toxicity; decision making; homeland security; risk management ID LETHAL TOXICITY; MAJOR HAZARDS; UNCERTAINTY; MORTALITY; VARIABILITY; INFORMATION; CHLORINE; INCOME AB The Homeland Security Act mandates the development of a national, risk-based system to support planning for, response to, and recovery from emergency situations involving large-scale toxic exposures. To prepare for and manage consequences effectively, planners and responders need not only to identify zones of potentially elevated individual risk but also to predict expected casualties. Emergency response support systems now define "consequences" by mapping areas in which toxic chemical concentrations do or may exceed Acute Exposure Guideline Levels (AEGLs) or similar guidelines. However, because AEGLs do not estimate expected risks, current unqualified claims that such maps support consequence management are misleading. Intentionally protective, AEGLs incorporate various safety/uncertainty factors depending on the scope and quality of chemical-specific toxicity data. Some of these factors are irrelevant, and others need to be modified, whenever resource constraints or exposure-scenario complexities require responders to make critical trade-off (triage) decisions in order to minimize expected casualties. AEGL-exceedance zones cannot consistently be aggregated, compared, or used to calculate expected casualties and so may seriously misguide emergency response triage decisions. Methods and tools well established and readily available to support environmental health protection are not yet developed for chemically-related environmental health triage. Effective triage decisions involving chemical risks require a new assessment approach that focuses on best estimates of likely casualties, rather than on upper plausible bounds of individual risk. If risk-based consequence management is to become a reality, federal agencies tasked with supporting emergency response must actively coordinate to foster new methods that can support effective environmental health triage. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Bogen, KT (reprint author), Lawrence Livermore Natl Lab, L-396,7000 East Ave, Livermore, CA 94550 USA. EM bogen@LLNL.gov NR 43 TC 8 Z9 8 U1 0 U2 2 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD OCT PY 2005 VL 25 IS 5 BP 1085 EP 1095 DI 10.1111/j.1539-6924.2005.00658.x PG 11 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA 978IS UT WOS:000232867400001 PM 16297216 ER PT J AU Chen, L Lullo, DJ Ma, EB Celniker, SE Rio, DC Doudna, JA AF Chen, L Lullo, DJ Ma, EB Celniker, SE Rio, DC Doudna, JA TI Identification and analysis of U5 snRNA variants in Drosophila SO RNA-A PUBLICATION OF THE RNA SOCIETY LA English DT Article DE US snRNA; noncoding RNA; Drosophila ID SMALL NUCLEOLAR RNAS; SMALL NUCLEAR RNAS; MESSENGER-RNAS; CROSS-LINKING; SPLICE-SITE; MELANOGASTER; YEAST; CONSERVATION; DIVERSITY; SEQUENCES AB Distinct isoforms of spliceosomal RNAs may be involved in regulating pre-messenger RNA splicing in eukaryotic cells. During a large-scale effort to identify small noncoding RNAs in Drosophila, we isolated a US snRNA-like molecule containing a 5' segment identical to that of the canonical (major) US snRNA but with a variant Sm binding site and a distinct 3' hairpin sequence. Based on this finding, another six similar US snRNA-like sequences were identified within the Drosophila genome by sequence similarity to the invariant loop in the 5' half of US. Interestingly, although all of these variants are expressed in vivo, each shows a distinct temporal expression profile during Drosophila development, and one is expressed primarily in fly heads. The presence of these US snRNA variants within RNP particles suggests their role in splicing and implies a possible connection to regulation of developmental and tissue-specific gene expression. C1 Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Doudna, JA (reprint author), Univ Calif Berkeley, Dept Mol & Cellular Biol, Berkeley, CA 94720 USA. EM don_rio@berkeley.edu; doudna@berkeley.edu FU NHGRI NIH HHS [R01 HG002673, R01HG002673]; NIGMS NIH HHS [R01 GM061987, R01GM61987] NR 34 TC 10 Z9 13 U1 0 U2 0 PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT PI WOODBURY PA 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2924 USA SN 1355-8382 J9 RNA JI RNA-Publ. RNA Soc. PD OCT PY 2005 VL 11 IS 10 BP 1473 EP 1477 DI 10.1261/rna.2141505 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 970SP UT WOS:000232330200001 PM 16199758 ER PT J AU Qasim, M Fredrickson, H Honea, P Furey, J Leszczynski, J Okovytyy, S Szecsody, J Kholod, Y AF Qasim, M Fredrickson, H Honea, P Furey, J Leszczynski, J Okovytyy, S Szecsody, J Kholod, Y TI Prediction of CL-20 chemical degradation pathways, theoretical and experimental evidence for dependence on competing modes of reaction SO SAR AND QSAR IN ENVIRONMENTAL RESEARCH LA English DT Article DE theoretical prediction; spectroscopy; alkaline hydrolysis; photochemical degradation; competing degradation mechanisms; CL-20 ID EXPLOSIVE CL-20; MECHANISMS; INSIGHTS AB Highest occupied and lowest unoccupied molecular orbital energies, formation energies, bond lengths and FTIR spectra all suggest competing CL-20 degradation mechanisms. This second of two studies investigates recalcitrant, toxic, aromatic CL-20 intermediates that absorb from 370 to 430 nm. Our earlier study (Struct. Chem., 15, 2004) revealed that these intermediates were formed at high OH- concentrations via the chemically preferred pathway of breaking the C-C bond between the two cyclopentanes, thereby eliminating nitro groups, forming conjugated pi bonds, and resulting in a pyrazine three-ring aromatic intermediate. In attempting to find and make dominant a more benign CL-20 transformation pathway, this current research validates hydroxylation results from both studies and examines CL-20 transformations via photo-induced free radical reactions. This article discusses CL-20 competing modes of degradation revealed through: computational calculation; UV/VIS and SF spectroscopy following alkaline hydrolysis; and photochemical irradiation to degrade CL-20 and its byproducts at their respective wavelengths of maximum absorption. C1 USA, Erdc, CSC, Vicksburg, MS 39180 USA. Dnepropetrovsk Natl Univ, Dept Chem, UA-49050 Dnepropetrovsk, Ukraine. Jackson State Univ, Dept Chem, Computat Ctr Mol Struct & Interact, Jackson, MS 39217 USA. Pacific NW Lab, Richland, WA 99352 USA. RP Qasim, M (reprint author), USA, Erdc, CSC, 3909 Halls Ferry Rd, Vicksburg, MS 39180 USA. EM Mohammad.M.Qasim@erdc.usace.army.mil RI Okovytyy, Sergiy/F-9838-2010 OI Okovytyy, Sergiy/0000-0003-4367-1309 NR 30 TC 13 Z9 13 U1 1 U2 9 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1062-936X J9 SAR QSAR ENVIRON RES JI SAR QSAR Environ. Res. PD OCT PY 2005 VL 16 IS 5 BP 495 EP 515 DI 10.1080/10659360500320453 PG 21 WC Chemistry, Multidisciplinary; Computer Science, Interdisciplinary Applications; Environmental Sciences; Mathematical & Computational Biology; Toxicology SC Chemistry; Computer Science; Environmental Sciences & Ecology; Mathematical & Computational Biology; Toxicology GA 986HQ UT WOS:000233441100006 PM 16272046 ER PT J AU Thom, AJ Kramer, MJ Mandal, P Akinc, M AF Thom, AJ Kramer, MJ Mandal, P Akinc, M TI Wet air and simulated combustion gas exposures of Mo-Si-B alloys SO SCRIPTA MATERIALIA LA English DT Article DE transition metal silicides; oxidation; thermogravimetric analysis; wet air ID MO-12SI-8.5B AT.PERCENT; OXIDATION BEHAVIOR; SILICIDE AB Water vapor does not significantly increase the oxidation rate of Mo-Si-B alloys at 1000 degrees C. Oxidation in wet air appears to be rate limited by the transport of MoO2 through the external glassy scale. Mo5Si3Bx,-based alloys showed significantly increased resistance at 1000 degrees C to exposures in a simulated oxidizing flue gas. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 Lockheed Martin Corp, Schenectady, NY 12301 USA. Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Ames, IA 50011 USA. KC Coll, Birbhum 731124, WB, India. RP Thom, AJ (reprint author), Lockheed Martin Corp, Schenectady, NY 12301 USA. EM ajthom@iastate.edu NR 10 TC 7 Z9 8 U1 1 U2 5 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 OCT PY 2005 VL 53 IS 8 BP 915 EP 919 DI 10.1016/j.scriptamat.2005.06.029 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 961JK UT WOS:000231658200006 ER PT J AU Guo, Z Morris, JW AF Guo, Z Morris, JW TI Martensite variants generated by the mechanical transformation of precipitated interlath austenite SO SCRIPTA MATERIALIA LA English DT Article DE high strength steel; ductile-brittle transition; fracture toughness; retained austenite; intercritical tempering ID 5.5NI CRYOGENIC STEEL; COHERENT TRANSFORMATIONS; 9NI STEEL; TOUGHNESS; STABILITY AB Intercritically tempered (5-9)Ni steels are toughened by the introduction of islands of precipitated austenite along the boundaries of dislocated martensite laths. The interlath islands of precipitated austenite transform to martensite under the stress field ahead of a cleavage crack. Since the fresh martensite is a different crystallographic variant than that of the surrounding packets, it efficiently refines the effective grain size for transgranular cleavage. A straightforward calculation shows that this behavior is dictated by the need to minimize the elastic strain energy of the fresh martensite. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 Univ Calif Berkeley, Ctr Adv Mat, Dept Mat Sci & Engn, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Morris, JW (reprint author), Univ Calif Berkeley, Ctr Adv Mat, Dept Mat Sci & Engn, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM jwmorris@berkeley.edu NR 17 TC 10 Z9 12 U1 1 U2 22 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 OCT PY 2005 VL 53 IS 8 BP 933 EP 936 DI 10.1016/j.scriptamat.2005.06.027 PG 4 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 961JK UT WOS:000231658200009 ER PT J AU Mahesh, S Beyerlein, IJ Tome, CN AF Mahesh, S Beyerlein, IJ Tome, CN TI Loading- and substructure-induced irreversibility in texture during route C equal channel angular extrusion SO SCRIPTA MATERIALIA LA English DT Article DE plastic deformation; extrusion; load path reversal; texture; copper ID GRAIN-REFINEMENT; DEFORMATION; METALS; STRAIN; POLYCRYSTALS; EVOLUTION; COPPER; SHEAR; FLOW AB The experimental texture after two equal channel angular extrusion (ECAE) passes by route C differs qualitatively from that calculated using standard polycrystal models assuming forward and reverse simple shear. Agreement between orientation imaging microscopy measured textures of ECAE copper and polycrystal model calculations is obtained by accounting for strain hardening, substructure formation, and non-uniform distribution of the bulk deformation. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 Indian Inst Technol, Dept Aerosp & Mech Engn, Kanpur 208016, Uttar Pradesh, India. Los Alamos Natl Lab, Div Theoret, Dept Aeronaut & Mech Engn, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Mat Sci & Technol, Dept Aeronaut & Mech Engn, Los Alamos, NM 87545 USA. RP Mahesh, S (reprint author), Indian Inst Technol, Dept Aerosp & Mech Engn, Kanpur 208016, Uttar Pradesh, India. EM smahesh@iitk.ac.in RI Tome, Carlos/D-5058-2013; Beyerlein, Irene/A-4676-2011 NR 20 TC 27 Z9 27 U1 0 U2 4 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 OCT PY 2005 VL 53 IS 8 BP 965 EP 969 DI 10.1016/j.scriptamat.2005.06.017 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 961JK UT WOS:000231658200015 ER PT J AU Sun, YN Choo, H Liaw, PK Lu, YL Yang, B Brown, DW Bourke, MAM AF Sun, YN Choo, H Liaw, PK Lu, YL Yang, B Brown, DW Bourke, MAM TI Neutron diffraction studies on lattice strain evolution around a crack-tip during tensile loading and unloading cycles SO SCRIPTA MATERIALIA LA English DT Article DE crack-closure; neutron diffraction; fatigue ID GROWTH-BEHAVIOR; FATIGUE BEHAVIOR; PROPAGATION; ALLOY; MERCURY; STEEL AB Elastic lattice-strain profiles ahead of a fatigue-crack-tip were measured during tensile loading and unloading cycles using neutron diffraction. The crack-closure phenomenon after an overload was observed. Furthermore, the plastic-zone size in front of the crack-tip was estimated from the diffraction-peak broadening, which showed good agreement with the calculated result. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Sun, YN (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. EM ysun1@utk.edu RI Choo, Hahn/A-5494-2009 OI Choo, Hahn/0000-0002-8006-8907 NR 25 TC 21 Z9 21 U1 2 U2 8 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 OCT PY 2005 VL 53 IS 8 BP 971 EP 975 DI 10.1016/j.scriptamat.2005.06.019 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 961JK UT WOS:000231658200016 ER PT J AU Nelson, CM Bissell, MJ AF Nelson, CM Bissell, MJ TI Modeling dynamic reciprocity: Engineering three-dimensional culture models of breast architecture, function, and neoplastic transformation SO SEMINARS IN CANCER BIOLOGY LA English DT Review DE basement membrane; mammary gland; microenvironment; morphogenesis; therapy; tissue structure ID MAMMARY EPITHELIAL-CELLS; CASEIN GENE-EXPRESSION; RECONSTITUTED BASEMENT-MEMBRANE; FLOATING COLLAGEN MEMBRANES; TUMOR-STROMA INTERACTIONS; ESTROGEN-RECEPTOR-ALPHA; EXTRACELLULAR-MATRIX; CARCINOMA CELLS; TRANSCRIPTIONAL ENHANCER; BRANCHING MORPHOGENESIS AB In order to understand why cancer develops as well as predict the outcome of pharmacological treatments, we need to model the structure and function of organs in culture so that our experimental manipulations occur under physiological contexts. This review traces the history of the development of a prototypic example, the three-dimensional (3D) model of the mammary gland acinus. We briefly describe the considerable information available on both normal mammary gland function and breast cancer generated by the current model and present future challenges that will require an increase in its complexity. We propose the need for engineered tissues that faithfully recapitulate their native structures to allow a greater understanding of tissue function, dysfunction, and potential therapeutic intervention. (c) 2005 Elsevier Ltd. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Bissell, MJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd,MS 977-225A, Berkeley, CA 94720 USA. EM mjbissell@lbl.gov FU NCI NIH HHS [CA64786, CA57621, R01 CA057621, R01 CA057621-07, R01 CA064786, R01 CA064786-05, R37 CA064786] NR 133 TC 186 Z9 193 U1 3 U2 30 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 1044-579X J9 SEMIN CANCER BIOL JI Semin. Cancer Biol. PD OCT PY 2005 VL 15 IS 5 BP 342 EP 352 DI 10.1016/j.semcancer.2005.05.001 PG 11 WC Oncology SC Oncology GA 966KO UT WOS:000232018800003 PM 15963732 ER PT J AU Taylor, CR Malshe, AP Salamo, G Prince, RN Riester, L Cho, SO AF Taylor, CR Malshe, AP Salamo, G Prince, RN Riester, L Cho, SO TI Characterization of ultra-low-load (mu N) nanoindents in GaAs(100) using a cube corner tip SO SMART MATERIALS & STRUCTURES LA English DT Article ID TRANSMISSION ELECTRON-MICROSCOPY; INAS QUANTUM DOTS; GAAS; SURFACES; CRYSTAL; INDENTS; GE; SI AB In this study, nanoindentations are produced and characterized for the future patterning of nanostructures. Nanoindentation is performed on Si-doped (n-type) vertical gradient freeze (VGF) GaAs(100) and epitaxial GaAs(100) using a diamond cube corner indenter. Unlike previous research, the uniqueness of this work is in nanoindentation of GaAs at ultra-low loads (< 400 mu N). Indentations of less than 200 nm in width are produced, and the mechanical propel-ties of the two materials including hardness and elastic modulus are determined. The smallest indentations achieved are less than 60 nm in width and less than 2 nm deep. The width, depth, shape, and volume of the indents are determined as a function of applied load using atomic force microscopy (AFM). Also, the ratio of pile-up volume to indent volume is determined. The experimental findings are discussed in relation to existing theories of indentation and for the directed self-assembly of nanostructures. C1 Univ Arkansas, Dept Mech Engn, Fayetteville, AR 72701 USA. Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA. Oak Ridge Natl Lab, High Temp Mat Lab, Oak Ridge, TN 37831 USA. RP Malshe, AP (reprint author), Univ Arkansas, Dept Mech Engn, Mech Engn Bldg, Fayetteville, AR 72701 USA. EM crtaylor@vcu.edu; apm2@engr.uark.edu; salamo@uark.edu; rnprinc@uark.edu; riesterl@ornl.gov; socho@uark.edu RI Taylor, Curtis/J-6236-2013 OI Taylor, Curtis/0000-0001-9184-5487 NR 22 TC 7 Z9 7 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0964-1726 J9 SMART MATER STRUCT JI Smart Mater. Struct. PD OCT PY 2005 VL 14 IS 5 BP 963 EP 970 DI 10.1088/0964-1726/14/5/034 PG 8 WC Instruments & Instrumentation; Materials Science, Multidisciplinary SC Instruments & Instrumentation; Materials Science GA 981HM UT WOS:000233078300035 ER PT J AU Luo, SN Zheng, LQ Tschauner, O AF Luo, SN Zheng, LQ Tschauner, O TI Spontaneous disordering of nm-grain-sized polycrystals and clusters of silica stishovite SO SOLID STATE COMMUNICATIONS LA English DT Article DE silica; nanostructure; grain boundaries; disordering; molecular dynamics ID PRESSURE-INDUCED AMORPHIZATION; MOLECULAR-DYNAMICS; ALPHA-QUARTZ; AMORPHOUS SILICA; SINGLE-CRYSTALS; DENSIFICATION; TRANSITION; PHASES; OXIDE; GLASS AB We investigate spontaneous structural disordering of nm-grain-sized polycrystals and clusters of stishovite at ambient conditions using molecular dynamics, and compare to disordering in stishovite nanocrystals and single-crystal alpha-quartz at high pressures. For nanocrystals and clusters at ambient conditions and sub-ns time scales, the extent and rate of disordering increase with the surface-area-to-volume ratio, and the structure becomes completely amorphous if the size is less than about 2 nm. Within the stability field of stishovite, disordering at the grain boundaries is less pronounced. Low-pressure disordering of stishovite structure involves Si coordination number reduction from six to five and finally to four, a process opposite to the pressure-induced amorphization of quartz. (C) 2005 Elsevier Ltd. All rights reserved. C1 Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. Univ Missouri, Dept Chem, Columbia, MO 65211 USA. Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA. Univ Nevada, High Pressure Sci & Engn Ctr, Las Vegas, NV 89154 USA. RP Luo, SN (reprint author), Los Alamos Natl Lab, Div Phys, P-24 Plasma Phys, Los Alamos, NM 87545 USA. EM sluo@lanl.gov RI Zheng, Lianqing/B-4171-2008; Luo, Sheng-Nian /D-2257-2010 OI Luo, Sheng-Nian /0000-0002-7538-0541 NR 29 TC 8 Z9 8 U1 1 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1098 EI 1879-2766 J9 SOLID STATE COMMUN JI Solid State Commun. PD OCT PY 2005 VL 136 IS 2 BP 71 EP 75 DI 10.1016/j.ssc.2005.07.005 PG 5 WC Physics, Condensed Matter SC Physics GA 966DD UT WOS:000231998900003 ER PT J AU Sheppard, JMH Sondhauss, P Merlin, R Bucksbaum, P Lee, RW Wark, JS AF Sheppard, JMH Sondhauss, P Merlin, R Bucksbaum, P Lee, RW Wark, JS TI Simulations of the phonon Bragg switch in GaAs SO SOLID STATE COMMUNICATIONS LA English DT Article DE phonons; inelastic light scattering; X-ray scattering ID X-RAY-DIFFRACTION; PULSES AB It has recently been proposed that X-rays can be switched on sub-picosecond time-scales by using laser-generated coherent optical phonons: The so called phonon Bragg switch. We present here detailed simulations of the efficiency of such a switch by solving the time-dependent generalized Takagi-Taupin equations utilizing a perturbative approach. We explore the switching efficiency in diffraction from the (004) planes of GaAs as a function of both excited phonon wave vector and amplitude. (C) 2005 Elsevier Ltd. All rights reserved. C1 Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England. Lund Univ, Max Lab, S-22100 Lund, Sweden. Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Sheppard, JMH (reprint author), Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England. EM j.sheppard1@physics.ox.ac.uk OI Merlin, Roberto/0000-0002-5584-0248 NR 14 TC 6 Z9 6 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1098 J9 SOLID STATE COMMUN JI Solid State Commun. PD OCT PY 2005 VL 136 IS 3 BP 181 EP 185 DI 10.1016/j.sse.2005.05.056 PG 5 WC Physics, Condensed Matter SC Physics GA 968PU UT WOS:000232175300011 ER PT J AU Huang, XS Mickelson, W Regan, BC Zettl, A AF Huang, XS Mickelson, W Regan, BC Zettl, A TI Enhancement of the upper critical field of MgB2 by carbon-doping SO SOLID STATE COMMUNICATIONS LA English DT Article DE upper critical field; MgB2 ID MAGNESIUM DIBORIDE; PURITY DEPENDENCE; TEMPERATURE; SUPERCONDUCTIVITY; TRANSITION; ORIGIN; HC2 AB We have measured the temperature dependence of the upper critical field, H-c2(T), of carbon-doped MgB2 center dot H-c2(T) does not follow the well-known Werthamer-Helfand-Hohenberg (WHH) result for a one-gap dirty superconductor but can be described well by the result of a recent theoretical calculation for a two-gap dirty superconductor. H-c2(0) of the carbon-doped material is determined to be between 29 and 38 T, substantially higher than that of pure MgB2 (15-23 T). (C) 2005 Elsevier Ltd. All rights reserved. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Huang, XS (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM xhuang@berkeley.edu RI Mickelson, Willi/D-8813-2013; Zettl, Alex/O-4925-2016 OI Mickelson, Willi/0000-0002-6398-6212; Zettl, Alex/0000-0001-6330-136X NR 32 TC 20 Z9 20 U1 0 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1098 EI 1879-2766 J9 SOLID STATE COMMUN JI Solid State Commun. PD OCT PY 2005 VL 136 IS 5 BP 278 EP 282 DI 10.1016/j.ssc.2005.08.003 PG 5 WC Physics, Condensed Matter SC Physics GA 973GT UT WOS:000232511600006 ER PT J AU James, SC Bilezikjian, TK Chrysikopoulos, CV AF James, SC Bilezikjian, TK Chrysikopoulos, CV TI Contaminant transport in a fracture with spatially variable aperture in the presence of monodisperse and polydisperse colloids SO STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT LA English DT Article DE colloid and contaminant co-transport; particle tracking; variable aperture fracture ID SATURATED POROUS-MEDIA; RADIONUCLIDE TRANSPORT; 2-DIMENSIONAL FRACTURE; FACILITATED TRANSPORT; MIGRATION EXPERIMENTS; LOCALIZED ADSORPTION; HOMOGENEOUS SURFACES; GRANITE FRACTURE; TEST-SITE; ROCK AB A quasi-three-dimensional particle tracking model is developed to characterize the spatial and temporal effects of advection, molecular diffusion, Taylor dispersion, fracture wall deposition, matrix diffusion, and co-transport processes on two discrete plumes (suspended monodisperse or polydisperse colloids and dissolved contaminants) flowing through a variable aperture fracture situated in a porous medium. Contaminants travel by advection and diffusion and may sorb onto fracture walls and colloid particles, as well as diffuse into and sorb onto the surrounding porous rock matrix. A kinetic isotherm describes contaminant sorption onto colloids and sorbed contaminants assume the unique transport properties of colloids. Sorption of the contaminants that have diffused into the matrix is governed by a first-order kinetic reaction. Colloids travel by advection and diffusion and may attach onto fracture walls; however, they do not penetrate the rock matrix. A probabilistic form of the Boltzmann law describes filtration of both colloids and contaminants on fracture walls. Ensemble-averaged breakthrough curves of many fracture realizations are used to compare arrival times of colloid and contaminant plumes at the fracture outlet. Results show that the presence of colloids enhances contaminant transport (decreased residence times) while matrix diffusion and sorption onto fracture walls retard the transport of contaminants. Model simulations with the polydisperse colloids show increased effects of cotransport processes. C1 Sandia Natl Labs, Geohydrol Dept, Albuquerque, NM 87185 USA. RBF Consulting, Irvine, CA 92618 USA. Univ Patras, Dept Civil Engn, Rion 26500, Greece. RP James, SC (reprint author), Sandia Natl Labs, Geohydrol Dept, POB 5800, Albuquerque, NM 87185 USA. EM scjames@sandia.gov; tanyab@rbf.com; gios@upatras.gr RI Chrysikopoulos, Constantinos/F-1783-2013; OI Chrysikopoulos, Constantinos/0000-0003-4722-8697; James, Scott/0000-0001-7955-0491 NR 60 TC 27 Z9 27 U1 3 U2 19 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1436-3240 J9 STOCH ENV RES RISK A JI Stoch. Environ. Res. Risk Assess. PD OCT PY 2005 VL 19 IS 4 BP 266 EP 279 DI 10.1007/s00477-0231-3 PG 14 WC Engineering, Environmental; Engineering, Civil; Environmental Sciences; Statistics & Probability; Water Resources SC Engineering; Environmental Sciences & Ecology; Mathematics; Water Resources GA 980RF UT WOS:000233035200004 ER PT J AU Stavrev, S Grilli, F Dutoit, B Ashworth, SP AF Stavrev, S Grilli, F Dutoit, B Ashworth, SP TI Comparison of the AC losses of BSCCO and YBCO conductors by means of numerical analysis SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID MULTIFILAMENTARY BI-2223/AG CONDUCTORS; ELECTROMAGNETIC-FIELD ANALYSIS; LARGE ASPECT RATIO; MAGNETIC-FIELD; TRANSPORT CURRENT; HARD SUPERCONDUCTORS; COATED CONDUCTORS; CARRYING AC; SELF-FIELD; HTS TAPES AB This paper presents a quantitative comparison of the AC loss performance of two BSCCO and two YBCO conductors, characterized by the same self-field critical current of 150 A. We compare a 37-filamentary BSCCO tape, a 16-filamentary BSCCO square wire, a standard YBCO tape, and a stack of four narrower YBCO tapes. The comparison is made using a numerical technique, based on the finite-element method, which employs a non-linear E-J relation and a dependence of the local critical current density J(c) on the local magnetic field. For the simulation of YBCO conductors, a new 'shell-region' model is utilized. This overcomes the geometry and mesh problems typical of superconductors with very high geometric aspect ratio. Different AC working conditions are simulated: self-field, applied external field, and combined transport current and external field of varying orientation. We outline the advantages of using BSCCO or YBCO conductors for the different applications. Various magnetic field and current density profiles are investigated in order to illustrate the reasons for the loss difference in the four conductors. Particular attention is drawn to the YBCO tape and the YBCO stack, whose AC loss characteristics are less well known than those of BSCCO conductors. C1 Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. Swiss Fed Inst Technol, Nonlinear Syst Lab, CH-1015 Lausanne, Switzerland. RP Grilli, F (reprint author), Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. EM fgrilii@lanl.gov NR 26 TC 34 Z9 34 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD OCT PY 2005 VL 18 IS 10 BP 1300 EP 1312 DI 10.1088/0953-2048/18/10/009 PG 13 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 982PX UT WOS:000233175200009 ER PT J AU Biener, MM Biener, J Friend, CM AF Biener, MM Biener, J Friend, CM TI Enhanced transient reactivity of an O-sputtered Au(111) surface SO SURFACE SCIENCE LA English DT Article DE Auger electron spectroscopy; scanning tunneling microscopy; surface chemical reaction; catalysis; surface roughness; gold ID SULFUR-DIOXIDE; AU; ADSORPTION; CHEMISTRY; CLUSTERS; OXYGEN; STM AB The interaction of SO2 with oxygen-sputtered Au(1 11) (theta(oxygen) <= 0.35 ML) was studied by monitoring the oxygen and sulfur coverages as a function of SO2 exposure. The morphology of the sputtered Au is relatively smooth on a long length scale, but rough on a finer scale with islands averaging similar to 15 nm. The rough surface is not stable to scanning with the STM. Two reaction regimes were observed: oxygen depletion followed by sulfur deposition. An enhanced, transient sulfur deposition rate is observed at the oxygen depletion point. This effect is specifically pronounced if the Au surface is continuously exposed to SO2. The enhanced reactivity towards S deposition seems to be linked to the presence of highly reactive, undercoordinated Au atoms. Adsorbed oxygen appears to stabilize, but also to block these sites. In absence of the stabilization effect of adsorbed oxygen, i.e. at the oxygen depletion point, the enhanced reactivity decays on a timescale of a few minutes. These observations shed a new light on the catalytic reactivity of highly dispersed gold nanoparticles. (c) 2005 Elsevier B.V. All rights reserved. C1 Harvard Univ, Dept Chem, Cambridge, MA 02138 USA. Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA. Harvard Univ, Ctr Imaging & Mesoscale Struct, Cambridge, MA 02138 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Friend, CM (reprint author), Harvard Univ, Dept Chem, 12 Oxford St, Cambridge, MA 02138 USA. EM cfriend@deas.harvard.edu NR 17 TC 24 Z9 24 U1 1 U2 14 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD OCT 1 PY 2005 VL 590 IS 2-3 BP L259 EP L265 DI 10.1016/j.susc.2005.06.003 PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 961JC UT WOS:000231657300002 ER PT J AU Chang, CH Ramshaw, JD AF Chang, CH Ramshaw, JD TI Pressure force transition and mixture morphology evolution in heterogeneous mixtures SO THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS LA English DT Article DE mixture; multiphase; multicomponent; multifluid; pressure gradient ID EFFECTIVE BINARY DIFFUSION; 2-PHASE FLOW; GAS-MIXTURES; STABILITY; EQUATIONS AB The pressure gradient terms in multifluid dynamical descriptions with separate momentum equations for each species or material have different forms depending on the mixture morphology. As the mixture evolves from chunk to molecular mixing, the form of the pressure gradient terms should evolve accordingly. This paper presents a new formulation of the pressure gradient terms which exhibits the appropriate smooth transition in form as the mixture evolves from chunk to molecular mixing, including intermediate stages in which both types of mixing are present. This transition is accomplished by introducing appropriate mixture morphology variables beta(i) to describe the degree of molecular vs. chunk mixing for each species. A simple provisional relaxation-time model for the time evolution of the beta(i) is also presented. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Chang, CH (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM chc@lanl.gov; john@ramshaw.org NR 21 TC 2 Z9 2 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0935-4964 J9 THEOR COMP FLUID DYN JI Theor. Comput. Fluid Dyn. PD OCT PY 2005 VL 19 IS 4 BP 253 EP 260 DI 10.1007/s00162-005-0161-9 PG 8 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 952GF UT WOS:000230991300003 ER PT J AU Wu, G Valente, AM Phillips, HL Wang, H Wu, AT Renk, TJ Provencio, P AF Wu, G Valente, AM Phillips, HL Wang, H Wu, AT Renk, TJ Provencio, P TI Studies of niobium thin film produced by energetic vacuum deposition SO THIN SOLID FILMS LA English DT Article DE niobium; energetic condensation; transmission electron microscopy; electron cyclotron resonance ID DISTRIBUTIONS; PLASMA AB An energetic vacuum deposition system has been used to study deposition energy effects on the properties of niobium thin films on copper and sapphire substrates. The absence of a working gas avoids the gaseous inclusions commonly seen with sputtering deposition. A biased substrate holder controls the deposition energy. Transition temperature and residual resistivity ratio of the mobium thin films at several deposition energies are obtained together with surface morphology and crystal orientation measurements by atomic force microscope inspection, X-ray diffraction analysis and transmitted electron microscope (TEM) analysis. The results show that mobium, thin films on a sapphire substrate exhibit the best cryogenic properties at a deposition energy I of around 123 eV The TEM analysis revealed that epitaxial growth of film was evident when the deposition energy reached 163 eV for a sapphire substrate. Similarly, nobium thin films on copper substrates show that the film grows more oriented with higher deposition energy and the grain size reaches the scale of the film thickness at a deposition energy of around 153 eV. (c) 2005 Elsevier B.V. All rights reserved. C1 Jefferson Lab, Newport News, VA 23606 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Wu, G (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM genfa@jlab.org NR 19 TC 10 Z9 10 U1 0 U2 7 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 OCT 1 PY 2005 VL 489 IS 1-2 BP 56 EP 62 DI 10.1016/j.tsf.2005.04.099 PG 7 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA 958HN UT WOS:000231435400009 ER PT J AU Edberg, H AF Edberg, H TI Biodetection system aims to tackle terror threats SO TRAC-TRENDS IN ANALYTICAL CHEMISTRY LA English DT News Item C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Edberg, H (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM heather.edberg@pnl.gov NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE LONDON PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 0165-9936 J9 TRAC-TREND ANAL CHEM JI Trac-Trends Anal. Chem. PD OCT PY 2005 VL 24 IS 9 BP III EP III DI 10.1016/j.trac.2005.09.001 PG 1 WC Chemistry, Analytical SC Chemistry GA 979UM UT WOS:000232970400001 ER PT J AU Dai, ZY Hooker, BS Quesenberry, RD Thomas, SR AF Dai, ZY Hooker, BS Quesenberry, RD Thomas, SR TI Optimization of Acidothermus cellulolyticus endoglucanase (E1) production in transgenic tobacco plants by transcriptional, post-transcription and post-translational modification SO TRANSGENIC RESEARCH LA English DT Article DE Acidothermus cellulolyticus; cellulases; E1 endoglucanase; post-transcriptional modification; sub-cellular compartmentation; transgenic tobacco ID HETEROLOGOUS PROTEIN-PRODUCTION; TERMINAL KDEL SEQUENCE; MESSENGER-RNA; AGROBACTERIUM-TUMEFACIENS; TRICHODERMA-REESEI; SMALL-SUBUNIT; RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE; CELLOBIOHYDROLASE I; ANTIBODY-PRODUCTION; SECRETORY PATHWAY AB An attempt was made to obtain a high-level production of intact Acidothermus cellulolyticus endoglucanase (E1) in transgenic tobacco plants. The E1 expression was examined under the control of the constitutive and strong Mac promoter or light-inducible tomato Rubisco small sub-unit (RbcS-3C) promoter with its original or Alfalfa Mosaic Virus (AMV) RNA4 5'-untranslated leader (UTL) and targeted to different subcellular compartments via transit peptides. The transit peptides included native E1, endoplasmic reticulum, vacuole, apoplast, and chloroplast. E1 expression and its stability in transgenic plants were determined via E1 activity, protein immunoblotting, and RNA gel-blotting analyses. Effects of sub-cellular compartments on E1 production and its stability were determined in transgenic tobacco plants carrying one of six transgene expression vectors, where the E1 was under the control of Mac promoter, mannopine synthase transcription terminator, and one of the five transit peptides. Transgenic tobacco plants with an apoplastic transit peptide had the highest average E1 activity and protein accumulation, which was about 0.25% of total leaf soluble proteins estimated via E1 specific activity and protein gel blots. Intercellular fluid analyses confirmed that E1 signal peptide functioned properly in tobacco cells to secret E1 protein into the apoplast. By replacing RbcS-3C UTL with AMV RNA4 UTL E1 production was enhanced more than twofold, while it was less effective than the mannopine synthase UTL. It was observed that RbcS-3C promoter was more favorable for E1 expression in transgenic plants than the Mac promoter. E1 activity in dried tobacco seeds stored one year at room temperature was 45% higher than that observed immediately after harvesting, suggesting that E1 protein can be stored at room temperature for a long period. E1 stability in different subcellular compartments and the optimal combination of promoter, 5'-UTL, and sub-cellular compartmentation for heterologous protein production in transgenic plants are discussed. C1 Pacific NW Natl Lab, Chem & Biol Proc Dev Grp, Proc Sci & Engn Div, Richland, WA 99352 USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Dai, ZY (reprint author), Pacific NW Natl Lab, Chem & Biol Proc Dev Grp, Proc Sci & Engn Div, Richland, WA 99352 USA. EM ziyu.dai@pnl.gov OI Hooker, Brian/0000-0003-2010-1899 NR 53 TC 55 Z9 58 U1 0 U2 14 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0962-8819 J9 TRANSGENIC RES JI Transgenic Res. PD OCT PY 2005 VL 14 IS 5 BP 627 EP 643 DI 10.1007/s11248-005-5695-5 PG 17 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology GA 977JO UT WOS:000232799800011 PM 16245154 ER PT J AU Ajayi, OO Soppet, MJ Erdemir, A Fenske, GR Shi, B Liang, H AF Ajayi, OO Soppet, MJ Erdemir, A Fenske, GR Shi, B Liang, H TI Assessment of amorphous carbon coating for artificial joints application SO TRIBOLOGY & LUBRICATION TECHNOLOGY LA English DT Article DE friction; wear; carbon coatings; hip implant; ceramics; UHMWPE ID MOLECULAR-WEIGHT POLYETHYLENE; TOTAL HIP-ARTHROPLASTY; SUPERLOW-FRICTION; GENE-THERAPY; WEAR DEBRIS; IN-VITRO; OSTEOLYSIS; VIVO; MOTION; FILMS AB Replacement-of diseased or damaged human joints with artificial ones, is now a commons surgical procedure with a very high success rate. The hip and knee are the two most replaced joints. Currently, these artificial joints only last 10-15 years before failing by aseptic loosening due to periprosthetic osteolysis. The root cause of osteolysis has been traced to the body's response to the presence of polyethylene wear debris, which is,one of the articulating bearing surfaces. Thus, elimination or-reduction of wear at the rubbing interface of the joint is expected to prevent or at least delay onset of osteolysis, thereby increasing joint reliability and durability. Highly wear resistant and biocompatible bearing surfaces can lower. debris generation in artificial joints. in the present study we evaluated the friction and wear performance of newly developed Argonne carbon coatings and two ceramic materials (alumina and zirconia) as possible joint-bearing surfaces. Tests were conducted witha reciprocating pin-on-plate contact configuration using bovine serum as lubricant. Wear of the ceramic materials was substantially (two orders of magnitude) less than that of polyethylene, and the wear of carbon coating was several times less than that of the ceramic materials. Results of the present study demonstrate that a plausible approach to enhance the durability of artificial joints is the engineering of the bearing surfaces with a highly wear-resistant coating. C1 Argonne Natl Lab, Energy Technol Div, Argonne, IL 60439 USA. Univ Alaska Fairbanks, Fairbanks, AK USA. RP Ajayi, OO (reprint author), Argonne Natl Lab, Energy Technol Div, Argonne, IL 60439 USA. NR 27 TC 1 Z9 1 U1 0 U2 1 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 840 BUSSE HIGHWAY, PARK RIDGE, IL 60068 USA SN 0024-7154 J9 TRIBOL LUBR TECHNOL JI Tribol. Lubr. Technol. PD OCT PY 2005 VL 61 IS 10 BP 40 EP 48 PG 9 WC Engineering, Mechanical SC Engineering GA 974TV UT WOS:000232615200010 ER PT J AU Erni, R Browning, ND AF Erni, R Browning, ND TI Valence electron energy-loss spectroscopy in monochromated scanning transmission electron microscopy SO ULTRAMICROSCOPY LA English DT Article DE VEELS; STEM; HR-EELS; YBCO ID QUANTITATIVE-ANALYSIS; DISPERSION FORCES; MOLECULAR-OXYGEN; LOSS SPECTRA; BAND-GAP; RESOLUTION; REGION; SPECTROMETER; YBA2CU3O7-DELTA; TRANSITIONS AB With the development of monochromators for (scanning) transmission electron microscopes, valence electron energy-loss spectroscopy (VEELS) is developing into a unique technique to study the band structure and optical properties of nanoscale materials. This article discusses practical aspects of spatially resolved VEELS performed in scanning transmission mode and the alignments necessary to achieve the current optimum performance of similar to 0.15 eV energy resolution with an electron probe size of similar to 1 nm. In particular, a collection of basic concepts concerning the acquisition process, the optimization of the energy resolution, the spatial resolution and the data processing are provided. A brief study of planar defects in a Y(1)Ba(2)Cu(3)O(7)_(delta) high-temperature superconductor illustrates these concepts and shows what kind of information can be accessed by VEELS. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. RP Erni, R (reprint author), FEI Electron Opt, POB 80066, NL-5600 KA Eindhoven, Netherlands. EM rolf.erni@nl.feico.com RI Erni, Rolf/P-7435-2014; OI Erni, Rolf/0000-0003-2391-5943; Browning, Nigel/0000-0003-0491-251X NR 51 TC 56 Z9 56 U1 4 U2 43 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD OCT PY 2005 VL 104 IS 3-4 BP 176 EP 192 DI 10.1016/j.ultramic.2005.03.009 PG 17 WC Microscopy SC Microscopy GA 956JX UT WOS:000231297100002 PM 15885909 ER PT J AU Fazzini, R Pozzi, G Beleggia, M AF Fazzini, R Pozzi, G Beleggia, M TI Electron optical phase-shifts by Fourier methods: Analytical versus numerical calculations SO ULTRAMICROSCOPY LA English DT Article DE electromagnetic fields; electron optical phase-shift; Lorentz microscopy; electron holography; image simulation ID P-N-JUNCTIONS; MICROSCOPY; IMAGES; FIELD; MODEL AB The theoretical framework for the computation of electromagnetic fields and electron optical phase-shifts in Fourier space has been recently applied to objects with long-range fringing fields, such as reverse-biased p-n junctions and magnetic stripe domains near a specimen edge. In addition to new analytical results, in this work, we present a critical comparison between numerical and analytical computations. The influence of explicit and implicit boundary conditions on the phase shifts and phase-contrast images is also investigated in detail. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Bologna, Dept Phys, I-40127 Bologna, Italy. Univ Bologna, Ist Nazl Fis Mat, I-40127 Bologna, Italy. Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RP Fazzini, R (reprint author), Univ Bologna, Dept Phys, Viale B Pichat 6-2, I-40127 Bologna, Italy. EM fazzini@bo.imm.cnr.it; giulio.pozzi@bo.infm.it; beleggia@bnl.gov RI FAZZINI, Pier Francesco/B-2645-2012; OI FAZZINI, Pier Francesco/0000-0002-4307-6481; Beleggia, Marco/0000-0002-2888-1888 NR 34 TC 8 Z9 8 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD OCT PY 2005 VL 104 IS 3-4 BP 193 EP 205 DI 10.1016/j.ultramic.2005.04.002 PG 13 WC Microscopy SC Microscopy GA 956JX UT WOS:000231297100003 PM 15899551 ER PT J AU Bals, S Kilaas, R Kisielowski, C AF Bals, S Kilaas, R Kisielowski, C TI Nonlinear imaging using annular dark field TEM SO ULTRAMICROSCOPY LA English DT Article DE thermal diffuse scattering; nonlinear imaging; annular dark field imaging ID ELECTRON-MICROSCOPY; RESOLUTION; FOCUS AB Annular dark field TEM images exhibit a dominant mass-thickness contrast that can be quantified to extract single atom scattering cross sections. On top of this incoherent background, additional lattice fringes appear with a nonlinear information limit of 1.2 angstrom at 150 kV. The formation of these fringes is described by coherent nonlinear imaging theory and good agreement is found between experimental and simulated images. Calculations furthermore predict that the use of aberration corrected microscopes will improve the image quality dramatically. (c) 2005 Elsevier B.V. All rights reserved. C1 Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. Univ Antwerp, B-2020 Antwerp, Belgium. RP Kisielowski, C (reprint author), Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM sara.bals@ua.ac.be; CFkisielowski@lbl.gov RI Bals, Sara/F-6963-2016 NR 17 TC 13 Z9 13 U1 2 U2 19 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD OCT PY 2005 VL 104 IS 3-4 BP 281 EP 289 DI 10.1016/j.ultramic.2005.05.004 PG 9 WC Microscopy SC Microscopy GA 956JX UT WOS:000231297100012 PM 15996819 ER PT J AU Sun, WL Ni, JR O'Brien, KC Hao, PP Sun, LY AF Sun, WL Ni, JR O'Brien, KC Hao, PP Sun, LY TI Adsorption of bisphenol a on sediments in the Yellow River SO WATER AIR AND SOIL POLLUTION LA English DT Article DE adsorption; bisphenol A; LC-MS/MS; sediment; SPE ID DISSOLVED ORGANIC-MATTER; WATER; SORPTION; SOILS; FISH; DEGRADATION; ENVIRONMENT; CHEMICALS; FATE AB Bisphenol A is widely used for the production of epoxy resins and polycarbonate plastics, and it has been found in many wastewaters or surface waters. Adsorption of bisphenol A on sediments sampled from several representative hydrologic stations of the Yellow River was studied, and some factors that may affect the sorption of bisphenol A were analyzed using the LC-MS/MS following solid-phase extraction. The results show that neither linear nor Freundlich isotherms is fit to the experimental data due to the high carbonate content in sediments. Bisphenol A has greater adsorption after the elimination of the carbonate in the sediment, and the adsorption of bisphenol A on the treated sediment can be described by both the linear and the Freundlich isotherms. The adsorption amount of bisphenol A is related to both the total organic carbon and dissolved organic carbon of sediments. The effects of Ca2+ and K+ on the adsorption of bisphenol A were also studied. It is found that Ca2+ and K+ showed different effects on the adsorption of bisphenol A because of their different valences. C1 Peking Univ, Dept Environm Engn, Key Lab Water & Sediment Sci, MOE, Beijing 100871, Peoples R China. Lawrence Livermore Natl Lab, Engn Directorate, Livermore, CA 94550 USA. RP Sun, WL (reprint author), Peking Univ, Dept Environm Engn, Key Lab Water & Sediment Sci, MOE, Beijing 100871, Peoples R China. EM sunweiling@iee.pku.edu.cn NR 20 TC 11 Z9 15 U1 1 U2 30 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0049-6979 J9 WATER AIR SOIL POLL JI Water Air Soil Pollut. PD OCT PY 2005 VL 167 IS 1-4 BP 353 EP 364 DI 10.1007/s11270-005-8263-y PG 12 WC Environmental Sciences; Meteorology & Atmospheric Sciences; Water Resources SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences; Water Resources GA 976HF UT WOS:000232723200022 ER PT J AU Carlin, P AF Carlin, P TI A suggested modification to a short communicatiom common expression for the energy content of a wind data sample SO WIND ENERGY LA English DT Article AB no abstract found!! C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Carlin, P (reprint author), Natl Renewable Energy Lab, Mail Stop 3811,1617 Cole Blvd, Golden, CO 80401 USA. EM palmer_carlin@nrel.gov NR 12 TC 2 Z9 2 U1 0 U2 1 PU JOHN WILEY & SONS LTD PI CHICHESTER PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND SN 1095-4244 J9 WIND ENERGY JI Wind Energy PD OCT-DEC PY 2005 VL 8 IS 4 BP 477 EP 480 DI 10.1002/we.149 PG 4 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA 993ZJ UT WOS:000233998700006 ER PT J AU Gertsman, VY Reed, BW AF Gertsman, VY Reed, BW TI On the three-dimensional twin-limited microstructure SO ZEITSCHRIFT FUR METALLKUNDE LA English DT Article DE grain boundary engineering; twin boundaries; triple junctions; quadruple points ID ANNEALING TWINS; POLYCRYSTALS; JUNCTIONS; ENSEMBLES AB Grain boundary networks consisting entirely of 13 and 19 boundaries (twin-limited microstructures) are analyzed. Analyses of thought examples and theoretical considerations show that there are fundamental differences between two-dimensional and three-dimensional networks. The notion of the upper limit of the fraction of Sigma 3 boundaries is reassessed, and implications for the concept of grain boundary engineering are discussed. C1 Nat Resources Canada, CANMET MTL, Ottawa, ON K1A 0G1, Canada. Lawrence Livermore Natl Lab, Div Mat Sci & Technol, Livermore, CA USA. RP Gertsman, VY (reprint author), Nat Resources Canada, CANMET MTL, 568 Booth St, Ottawa, ON K1A 0G1, Canada. EM val.gertsman@nrcan.gc.ca RI Reed, Bryan/C-6442-2013 NR 18 TC 3 Z9 3 U1 1 U2 2 PU CARL HANSER VERLAG PI MUNICH PA KOLBERGERSTRASSE 22, POSTFACH 86 04 20, D-81679 MUNICH, GERMANY SN 0044-3093 J9 Z METALLKD JI Z. Metallk. PD OCT PY 2005 VL 96 IS 10 BP 1106 EP 1111 PG 6 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA 986DH UT WOS:000233429200004 ER PT J AU Johnson, E Prokofjev, S Zhilin, V Dahmen, U AF Johnson, E Prokofjev, S Zhilin, V Dahmen, U TI Diffusional behavior of nanoscale lead inclusions in crystalline aluminum SO ZEITSCHRIFT FUR METALLKUNDE LA English DT Article DE transmission electron microscopy; nanoscale lead inclusions in solid aluminum; random motion; effect of dislocations; effect of temperature and size on diffusion coefficient ID LIQUID PB INCLUSIONS; AL; MOTION AB In-situ transmission electron microscopy (TEM) observations reveal a permanent chaotic motion of nanosized liquid Pb inclusions embedded in thin aluminum foils. Individual trajectories of the inclusions were analysed to determine the character of their motion. The inclusions moving freely inside a crystal display motion with three-dimensional random walk characteristics while inclusions attached to dislocations display spatially confined random motion localized to the close vicinity of the dislocation lines. The diffusion coefficients of inclusions moving freely in the matrix were determined using Einstein's classical equation for diffusion of Brownian particles. The diffusion coefficients of inclusions trapped on dislocations were found using an equation based on Smoluchowski's analysis of Brownian motion of a particle under the action of a linear elastic restoring force. The dependence of the diffusivity on the size of the inclusions suggests that their mobility is controlled by kinetic processes on the inclusion/matrix interfaces. The Arrhenius analysis exhibits two regions with different temperature dependencies. We suppose that this is related to the existence of {111} facets on the inclusion/matrix interfaces. C1 Univ Copenhagen, Nano Sci Ctr, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. Riso Natl Lab, Dept Mat Res, Roskilde, Denmark. Inst Solid State Phys, Chernogolovka, Russia. Natl Ctr Electron Microscopy, LBNL, Berkeley, CA USA. RP Johnson, E (reprint author), Univ Copenhagen, Nano Sci Ctr, Niels Bohr Inst, Univ Pk 5,Bygning D, DK-2100 Copenhagen, Denmark. EM johnson@fys.ku.dk NR 27 TC 1 Z9 1 U1 0 U2 1 PU CARL HANSER VERLAG PI MUNICH PA KOLBERGERSTRASSE 22, POSTFACH 86 04 20, D-81679 MUNICH, GERMANY SN 0044-3093 J9 Z METALLKD JI Z. Metallk. PD OCT PY 2005 VL 96 IS 10 BP 1171 EP 1180 PG 10 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA 986DH UT WOS:000233429200015 ER PT J AU Abou Hamad, I Mitchell, SJ Wandlowski, T Rikvold, PA Brown, G AF Abou Hamad, I Mitchell, SJ Wandlowski, T Rikvold, PA Brown, G TI Cl electrosorption on Ag(100): Lateral interactions and electrosorption valency from comparison of Monte Carlo simulations with chronocoulometry experiments SO ELECTROCHIMICA ACTA LA English DT Article DE chlorine electrosorption; lateral interactions; electrosorption valency; chronocoulornetry; continuous phase transition; Monte Carlo simulation ID SINGLE-CRYSTAL ELECTRODES; HALIDE ADSORPTION; IONIC ADSORPTION; LATTICE; BR; ISOTHERMS; SURFACES; BROMIDE; MODEL AB We present Monte Carlo simulations using an equilibrium lattice-gas model for the electrosorption of Cl on Ag(100) single-crystal surfaces. Fitting the simulated isotherms to chronocoulometry experiments, we extract parameters such as the electrosorption valency gamma and the next-nearest-neighbor lateral interaction energy phi(nnn). Both coverage-dependent and coverage-independent gamma were previously studied, assuming a constant phi(nnn) [I. Abou Hamad, Th. Wandlowski, G. Brown, P.A. Rikvold, J. Electroanal. Chem. 554-555 (2003) 211]. Here, a self-consistent, entirely electrostatic picture of the lateral interactions with a coverage-dependent phi(nnn) is developed, and a relationship between phi(nnn) and gamma is investigated for Cl on Ag(1 0 0). (C) 2005 Elsevier Ltd. All rights reserved. C1 Florida State Univ, Ctr Mat Res & Technol, Tallahassee, FL 32306 USA. Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Florida State Univ, Sch Computat Sci, Tallahassee, FL 32306 USA. Eindhoven Univ Technol, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands. Eindhoven Univ Technol, Dept Chem Engn, NL-5600 MB Eindhoven, Netherlands. Univ Georgia, Ctr Stimulat Phys, Athens, GA 30602 USA. Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA. Res Ctr Julich, CNI, Ctr Nanoelect Syst, D-52425 Julich, Germany. Res Ctr Julich, Inst Thin Films & Interfaces, D-52425 Julich, Germany. Oak Ridge Natl Lab, Ctr Computat Sci, Oak Ridge, TN 37831 USA. RP Abou Hamad, I (reprint author), Florida State Univ, Ctr Mat Res & Technol, Tallahassee, FL 32306 USA. EM hamad@csit.fsu.edu RI Thomas, Wandlowski/C-7251-2009; Brown, Gregory/F-7274-2016 OI Brown, Gregory/0000-0002-7524-8962 NR 26 TC 9 Z9 9 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0013-4686 J9 ELECTROCHIM ACTA JI Electrochim. Acta PD SEP 30 PY 2005 VL 50 IS 28 BP 5518 EP 5525 DI 10.1016/j.electacta.2005.03.057 PG 8 WC Electrochemistry SC Electrochemistry GA 973UO UT WOS:000232548300005 ER PT J AU Keller, DW Ponton, LM Porter, MD AF Keller, DW Ponton, LM Porter, MD TI Assessment of supporting electrolyte contributions in electrochemically modulated liquid chromatography SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article DE electrochemically modulated liquid chromatography; ion exchange chromatography; electrical double layer theory; porous graphite carbon ID POROUS GRAPHITIC CARBON; STATIONARY-PHASE; PACKING MATERIALS; RETENTION CHARACTERISTICS; ENANTIOMERIC SEPARATIONS; AQUEOUS SAMPLES; PERFORMANCE; SELECTIVITY; EMLC; ADSORPTION AB This paper reports the results of an investigation on the role of the supporting electrolyte in separations using electrochemically modulated liquid chromatography (EMLC) with a porous graphitic carbon stationary phase. With respect to the identity of the supporting electrolyte, the elution strength of the electrolyte anion increased as F- < OH- < BF4- < ClO4- < PF6- for injections of negatively charged aromatic molecules, whereas a 10-fold increase in electrolyte concentration induced a 60% change in retention for the same solutes. Furthermore, both the concentration and composition of the supporting electrolyte affected retention in a manner that varied with the charge of the analyte and applied potential. This behavior is explained using Gouy-Chapman diffuse double layer theory, coupled with comparisons of this theory with closely related models for ion-pair chromatography. Insights into the retention mechanism reveal that an ion-exchange mechanism controls the retention of negatively charged solutes at applied potentials removed from the potential of zero charge (PZC). At potentials close to the PZC, the electrostatic model is less effective with the predominant retention mechanism likely involving hydrophobic interactions with the carbonaceous stationary phase. The combined effects of these findings are demonstrated by using a temporal gradient in supporting electrolyte concentration to optimize an EMLC separation. (c) 2005 Elsevier B.V. All rights reserved. C1 Iowa State Univ, Ames Lab, USDOE, Inst Combinatorial Discovery, Ames, IA 50111 USA. Iowa State Univ, Dept Chem, Ames, IA 50111 USA. RP Porter, MD (reprint author), Iowa State Univ, Ames Lab, USDOE, Inst Combinatorial Discovery, Ames, IA 50111 USA. EM mporter@porter1.ameslab.gov NR 52 TC 9 Z9 9 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR A JI J. Chromatogr. A PD SEP 30 PY 2005 VL 1089 IS 1-2 BP 72 EP 81 DI 10.1016/j.chroma.2005.06.082 PG 10 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 955BW UT WOS:000231200700010 PM 16130774 ER PT J AU Asnin, L Guiochon, G AF Asnin, L Guiochon, G TI Calibration of detector responses using the shape and size of band profiles - Case of a nonlinear response curve SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article DE calibration curve; HPLC; UV-detector ID CHROMATOGRAPHY AB A new method consisting of using band profiles to calibrate the response of a detector, without making frontal analysis measurements, is discussed. A model for the calibration-curve expression is proposed. It is convenient and reasonably accurate even when the detector response deviates slightly from linear behavior at low concentrations. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Guiochon, G (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. EM guiochon@utk.edu OI Asnin, Leonid/0000-0001-6309-6140 NR 8 TC 9 Z9 9 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR A JI J. Chromatogr. A PD SEP 30 PY 2005 VL 1089 IS 1-2 BP 101 EP 104 DI 10.1016/j.chroma.2005.06.077 PG 4 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 955BW UT WOS:000231200700013 PM 16130777 ER PT J AU Asnin, L Guiochon, G AF Asnin, L Guiochon, G TI Calibration of a detector for nonlinear responses SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article DE nonlinear calibration curve; HPLC; UV-detector; reproducibility ID PERFORMANCE LIQUID-CHROMATOGRAPHY; HUMAN PLASMA AB A calibration curve is often needed to derive from the record of the detector signal the actual concentration profile of the eluate in many studies of the thermodynamic and kinetic of adsorption by chromatography. The calibration task is complicated in the frequent cases in which the detector response is nonlinear. The simplest approach consists in preparing a series of solutions of known concentrations, in flushing them successively through the detector cell, and in recording the height of the plateau response obtained. However, this method requires relatively large amounts of the pure solutes studied. These are not always available, may be most costly, and could be applied to better uses. An alternative procedure consists of deriving this calibration curve from a series of peaks recorded upon the injection of increasingly large pulses of the studied compound. We validated this new method in HPLC with a UV detector. Questions concerning the reproducibility and accuracy of the method are discussed. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Guiochon, G (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. EM guiochon@utk.edu OI Asnin, Leonid/0000-0001-6309-6140 NR 8 TC 10 Z9 10 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR A JI J. Chromatogr. A PD SEP 30 PY 2005 VL 1089 IS 1-2 BP 105 EP 110 DI 10.1016/j.chroma.2005.06.064 PG 6 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 955BW UT WOS:000231200700014 PM 16130778 ER PT J AU Galinada, WA Guiochon, G AF Galinada, WA Guiochon, G TI Effect of microwave dielectric heating on intraparticle diffusion in reversed-phase liquid chromatography SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article DE microwave irradiation; dielectric heating; mobile phase composition; intraparticle diffusion ID SURFACE-DIFFUSION; MASS-TRANSFER; ADSORPTION; PARAMETERS; RADIATION; KINETICS; BEDS AB The influence of microwave (MW) irradiation on the mass transfer kinetics in reversed-phase liquid chromatography (RPLC) was studied by placing a column in a microwave oven and measuring the incremental change in the temperature of the column effluent stream at various microwave energies and mobile phase compositions. The microwave energy dissipated in the column was set between 15 and 200 W and the mobile phase composition used varied from 100 to 70, 50, and 10% methanol in water at 1.2 mL/min. At all the mobile phase compositions considered, the effluent temperature increased with increasing microwave energy. At 70% methanol, the mobile phase flow rate was set at 1.2, 2.0, and 2.8 mL/min. At 1.2 mL/min, the effluent temperatures at the lowest (15 W) and highest (200 W) microwave energy inputs were 25 +/- 1 degrees C and 41 +/- 1 degrees C for pure methanol, 25 +/- 1 degrees C and 48 +/- 1 degrees C for 70% methanol, 25 +/- 1 degrees C and 50 +/- 1 degrees C for 50% methanol, and, 25 +/- 1 degrees C and 52 +/- 1 degrees C for 10% methanol, respectively. With 70% methanol and microwave energy inputs of 15, 30, and 50 W, the effluent temperature did not change with increasing flow rate; a considerable change was observed at 100, 150, and 200 W between 1.2 and 2.0 mL/min and none between 2.0 and 2.8 mL/min. Chromatographic elution band profiles of propylbenzene were recorded under linear conditions, in 70% methanol solutions, for microwave energy inputs of 0, 15 and 30 W, at constant temperature. The intraparticle diffusion coefficient, D-e, under microwave irradiation was ca. 20% higher than without irradiation. These preliminary results suggest that microwave irradiation may have a considerable influence on intraparticle diffusion in RPLC. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Guiochon, G (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. EM guiochon@utk.edu NR 34 TC 6 Z9 7 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR A JI J. Chromatogr. A PD SEP 30 PY 2005 VL 1089 IS 1-2 BP 125 EP 134 DI 10.1016/j.chroma.2005.06.062 PG 10 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 955BW UT WOS:000231200700016 PM 16130780 ER PT J AU Farrugia, CJ Matsui, H Kucharek, H Torbert, RB Smith, CW Jordanova, VK Ogilvie, KW Lepping, RP Berdichevsky, DB Terasawa, T Kasper, J Mukai, T Saito, Y Skoug, R AF Farrugia, CJ Matsui, H Kucharek, H Torbert, RB Smith, CW Jordanova, VK Ogilvie, KW Lepping, RP Berdichevsky, DB Terasawa, T Kasper, J Mukai, T Saito, Y Skoug, R TI Interplanetary coronal mass ejection and ambient interplanetary magnetic field correlations during the Sun-Earth connection events of October-November 2003 SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID WIND PLASMA CORRELATIONS; SOLAR-WIND; GEOMAGNETIC-ACTIVITY; IMP-8 OBSERVATIONS; CLOUDS; ISEE-3; STORMS; SHOCK; MAGNETOSPHERE; DISTURBANCES AB [1] Magnetic field observations made during 28 October to 1 November 2003, which included two fast interplanetary coronal mass ejections (ICMEs), allow a study of correlation lengths of magnetic field parameters for two types of interplanetary (IP) structures: ICMEs and ambient solar wind. Further, they permit the extension of such investigations to the magnetosheath and to a distance along the Sun-Earth line ( X) of about 400 RE. Data acquired by three spacecraft are examined: ACE, in orbit around the L1 point; Geotail, traveling eastward in the near-Earth solar wind ( at R similar to 30 R-E); and Wind, nominally in the distant geomagnetic tail ( R similar to - 160 R-E) but making repeated excursions into the magnetosheath/ solar wind due to the flapping of the tail. Analyses are presented in both time and frequency domains. We find significant differences in the cross-correlation/coherence properties of the ambient interplanetary magnetic field ( IMF) and ICME parameters. For the ambient IMF, we find high coherence to be confined to low frequencies, consistent with other studies. In contrast, ICME magnetic field parameters remain generally coherent up to much higher frequencies. Scale lengths of ICME magnetic field parameters are in excess of 400 R-E. High speeds of similar to 1700 km s(-1) are inferred from the plot of phase difference versus frequency, consistent with that obtained from plasma instruments. To strengthen these results and to extend them to include dependence on the distance perpendicular to the Sun-Earth line (Y), we examine a 28-day interval in year 2001 characterized by a sequence of 10 ICMEs and containing roughly equal ambient solar wind and ICME time intervals. ACE-Wind X and Y separations were similar to 220 and similar to 250 R-E, respectively. We find good coherence/correlation alternating with poor values. In particular, we find that in general ICME coherence/correlation lengths along Y are larger by a factor of 3 - 5 than those quoted in the literature for ambient solar wind parameters. Our findings are good news for the space weather effort, which depends crucially on predicting the arrival of large events, since they make possible the placement of upstream monitors to give a longer lead time than at L1. C1 Univ New Hampshire, Inst Study Earth Oceans & Space, Ctr Space Sci, Durham, NH 03824 USA. NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. Univ Tokyo, Dept Earth & Planetary Sci, Bunkyo Ku, Tokyo 1130033, Japan. MIT, Ctr Space Res, Cambridge, MA 02139 USA. Japan Aerosp Explorat Agcy, Kanagawa 2298510, Japan. Los Alamos Natl Lab, Grp ISR 1, Los Alamos, NM 87545 USA. RP Farrugia, CJ (reprint author), Univ New Hampshire, Inst Study Earth Oceans & Space, Ctr Space Sci, Durham, NH 03824 USA. EM charlie.farrugia@unh.edu RI Kasper, Justin/D-1152-2010; OI Kasper, Justin/0000-0002-7077-930X; Jordanova, Vania/0000-0003-0475-8743 NR 53 TC 15 Z9 15 U1 0 U2 2 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 SEP 30 PY 2005 VL 110 IS A9 AR A09S13 DI 10.1029/2004JA010968 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 973HD UT WOS:000232512600006 ER PT J AU Gopalswamy, N Barbieri, L Cliver, EW Lu, G Plunkett, SP Skoug, RM AF Gopalswamy, N Barbieri, L Cliver, EW Lu, G Plunkett, SP Skoug, RM TI Introduction to violent Sun-Earth connection events of October-November 2003 SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article; Proceedings Paper CT Fall Meeting of the American-Geophysical-Union CY DEC 08-12, 2003 CL San Francisco, CA SP Amer Geophys Union AB [1] The solar-terrestrial events of late October and early November 2003, popularly referred to as the Halloween storms, represent the best observed cases of extreme space weather activity observed to date and have generated research covering multiple aspects of solar eruptions and their space weather effects. In the following article, which serves as an abstract for this collective research, we present highlights taken from 61 of the 74 papers from the Journal of Geophysical Research, Geophysical Research Letters, and Space Weather which are linked under this special issue. ( An overview of the 13 associated papers published in Geophysics Research Letters is given in the work of Gopalswamy et al. (2005a)). C1 NASA, Goddard Space Flight Ctr, Extraterr Phys Lab, Greenbelt, MD 20771 USA. USAF, Res Lab, Space Vehicles Directorate, Bedford, MA 01731 USA. Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80301 USA. USN, Res Lab, Washington, DC 20375 USA. Los Alamos Natl Lab, Grp NIS1, Los Alamos, NM 87545 USA. RP NASA, Goddard Space Flight Ctr, Extraterr Phys Lab, Code 444, Greenbelt, MD 20771 USA. EM gopals@fugee.gsfc.nasa.gov RI Lu, Gang/A-6669-2011; Gopalswamy, Nat/D-3659-2012 NR 54 TC 30 Z9 31 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9380 EI 2169-9402 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD SEP 30 PY 2005 VL 110 IS A9 AR A09S00 DI 10.1029/2005JA011268 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 973HD UT WOS:000232512600011 ER PT J AU Abazov, VM Abbott, B Abolins, M Acharya, BS Adams, M Adams, T Agelou, M Agram, JL Ahn, SH Ahsan, M Alexeev, GD Alkhazov, G Alton, A Alverson, G Alves, GA Anastasoaie, M Andeen, T Anderson, S Andrieu, B Arnoud, Y Askew, A Asman, B Jesus, ACSA Atramentov, O Autermann, C Avila, C Badaud, F Baden, A Baldin, B Balm, PW Banerjee, S Barberis, E Bargassa, P Baringer, P Barnes, C Barreto, J Bartlett, JF Bassler, U Bauer, D Bean, A Beauceron, S Begel, M Bellavance, A Beri, SB Bernardi, G Bernhard, R Bertram, I Besancon, M Beuselinck, R Bezzubov, VA Bhat, PC Bhatnagar, V Binder, M Biscarat, C Black, KM Blackler, I Blazey, G Blekman, F Blessing, S Bloch, D Blumenschein, U Boehnlein, A Boeriu, O Bolton, TA Borcherding, F Borissov, G Bos, K Bose, T Brandt, A Brock, R Brooijmans, G Bross, A Buchanan, NJ Buchholz, D Buehler, M Buescher, V Burdin, S Burnett, TH Busato, E Buszello, CP Butler, JM Cammin, J Caron, S Carvalho, W Casey, BCK Cason, NM Castilla-Valdez, H Chakrabarti, S Chakraborty, D Chan, KM Chandra, A Chapin, D Charles, F Cheu, E Cho, DK Choi, S Choudhary, B Christiansen, T Christofek, L Claes, D Clement, B Clement, C Coadou, Y Cooke, M Cooper, WE Coppage, D Corcoran, M Cothenet, A Cousinou, MC Cox, B Crepe-Renaudin, S Cutts, D da Motta, H Davies, B Davies, G Davis, GA De, K de Jong, P de Jong, SJ De La Cruz-Burelo, E Martins, CDO Dean, S Degenhardt, JD Deliot, F Demarteau, M Demina, R Demine, P Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Doidge, M Dong, H Doulas, S Dudko, LV Duflot, L Dugad, SR Duperrin, A Dyer, J Dyshkant, A Eads, M Edmunds, D Edwards, T Ellison, J Elmsheuser, J Elvira, VD Eno, S Ermolov, P Eroshin, OV Estrada, J Evans, H Evdokimov, A Evdokimov, VN Fast, J Fatakia, SN Feligioni, L Ferapontov, AV Ferbel, T Fiedler, F Filthaut, F Fisher, W Fisk, HE Fleck, I Fortner, M Fox, H Fu, S Fuess, S Gadfort, T Galea, CF Gallas, E Galyaev, E Garcia, C Garcia-Bellido, A Gardner, J Gavrilov, V Gay, P Gele, D Gelhaus, R Genser, K Gerber, CE Gershtein, Y Gillberg, D Ginther, G Golling, T Gollub, N Gomez, B Gounder, K Goussiou, A Grannis, PD Greder, S Greenlee, H Greenwood, ZD Gregores, EM Gris, P Grivaz, JF Groer, L Grunendahl, S Grunewald, MW Gurzhiev, SN Gutierrez, G Gutierrez, P Haas, A Hadley, NJ Hagopian, S Hall, I Hall, RE Han, C Han, L Hanagaki, K Harder, K Harel, A Harrington, R Hauptman, JM Hauser, R Hays, J Hebbeker, T Hedin, D Heinmiller, JM Heinson, AP Heintz, U Hensel, C Hesketh, G Hildreth, MD Hirosky, R Hobbs, JD Hoeneisen, B Hohlfeld, M Hong, SJ Hooper, R Houben, P Hu, Y Huang, J Hynek, V Iashvili, I Illingworth, R Ito, AS Jabeen, S Jaffre, M Jain, S Jain, V Jakobs, K Jenkins, A Jesik, R Johns, K Johnson, M Jonckheere, A Jonsson, P Juste, A Kafer, D Kahn, S Kajfasz, E Kalinin, AM Kalk, J Karmanov, D Kasper, J Kau, D Kaur, R Kehoe, R Kermiche, S Kesisoglou, S Khanov, A Kharchilava, A Kharzheev, YM Kim, H Kim, TJ Klima, B Kohli, JM Kopal, M Korablev, VM Kotcher, J Kothari, B Koubarovsky, A Kozelov, AV Kozminski, J Kryemadhi, A Krzywdzinski, S Kulik, Y Kumar, A Kunori, S Kupco, A Kurca, T Kvita, J Lager, S Lahrichi, N Landsberg, G Lazoflores, J Le Bihan, AC Lebrun, P Lee, WM Leflat, A Lehner, F Leonidopoulos, C Leveque, J Lewis, P Li, J Li, QZ Lima, JGR Lincoln, D Linn, SL Linnemann, J Lipaev, VV Lipton, R Lobo, L Lobodenko, A Lokajicek, M Lounis, A Love, P Lubatti, HJ Lueking, L Lynker, M Lyon, AL Maciel, AKA Madaras, RJ Mattig, P Magass, C Magerkurth, A Magnan, AM Makovec, N Mal, PK Malbouisson, HB Malik, S Malyshev, VL Mao, HS Maravin, Y Martens, M Mattingly, SEK Mayorov, AA McCarthy, R McCroskey, R Meder, D Melnitchouk, A Mendes, A Merkin, M Merritt, KW Meyer, A Meyer, J Michaut, M Miettinen, H Mitrevski, J Molina, J Mondal, NK Moore, RW Muanza, GS Mulders, M Mutaf, YD Nagy, E Narain, M Naumann, NA Neal, HA Negret, JP Nelson, S Neustroev, P Noeding, C Nomerotski, A Novaes, SF Nunnemann, T Nurse, E O'Dell, V O'Neil, DC Oguri, V Oliveira, N Oshima, N Otero y Garzon, GJ Padley, P Parashar, N Park, SK Parsons, J Partridge, R Parua, N Patwa, A Pawloski, G Perea, PM Perez, E Petroff, P Petteni, M Piegaia, R Pleier, MA Podesta-Lerma, PLM Podstavkov, VM Pogorelov, Y Pompos, A Pope, BG da Silva, WLP Prosper, HB Protopopescu, S Qian, J Quadt, A Quinn, B Rani, KJ Ranjan, K Rapidis, PA Ratoff, PN Reucroft, S Rijssenbeek, M Ripp-Baudot, I Rizatdinova, F Robinson, S Rodrigues, RF Royon, C Rubinov, P Ruchti, R Rud, VI Sajot, G Sanchez-Hernandez, A Sanders, MP Santoro, A Savage, G Sawyer, L Scanlon, T Schaile, D Schamberger, RD Schellman, H Schieferdecker, P Schmitt, C Schwanenberger, C Schwartzman, A Schwienhorst, R Sengupta, S Severini, H Shabalina, E Shamim, M Shary, V Shchukin, AA Shephard, WD Shivpuri, RK Shpakov, D Sidwell, RA Simak, V Sirotenko, V Skubic, P Slattery, P Smith, RP Smolek, K Snow, GR Snow, J Snyder, S Soldner-Rembold, S Song, X Sonnenschein, L Sopczak, A Sosebee, M Soustruznik, K Souza, M Spurlock, B Stanton, NR Stark, J Steele, J Stevenson, K Stolin, V Stone, A Stoyanova, DA Strandberg, J Strang, MA Strauss, M Strohmer, R Strom, D Strovink, M Stutte, L Sumowidagdo, S Sznajder, A Talby, M Tamburello, P Taylor, W Telford, P Temple, J Tomoto, M Toole, T Torborg, J Towers, S Trefzger, T Trincaz-Duvoid, S Tuchming, B Tully, C Turcot, AS Tuts, PM Uvarov, L Uvarov, S Uzunyan, S Vachon, B Van Kooten, R van Leeuwen, WM Varelas, N Varnes, EW Vartapetian, A Vasilyev, IA Vaupel, M Verdier, P Vertogradov, LS Verzocchi, M Villeneuve-Seguier, F Vlimant, JR Toerne, EV Vreeswijk, M Vu Anh, T Wahl, HD Wang, L Warchol, J Watts, G Wayne, M Weber, M Weerts, H Wegner, M Wermes, N White, A White, V Wicke, D Wijngaarden, DA Wilson, GW Wimpenny, SJ Wittlin, J Wobisch, M Womersley, J Wood, DR Wyatt, TR Xu, Q Xuan, N Yacoob, S Yamada, R Yan, M Yasuda, T Yatsunenko, YA Yen, Y Yip, K Yoo, HD Youn, SW Yu, J Yurkewicz, A Zabi, A Zatserklyaniy, A Zdrazil, M Zeitnitz, C Zhang, D Zhang, X Zhao, T Zhao, Z Zhou, B Zhu, J Zielinski, M Zieminska, D Zieminski, A Zitoun, R Zutshi, V Zverev, EG AF Abazov, VM Abbott, B Abolins, M Acharya, BS Adams, M Adams, T Agelou, M Agram, JL Ahn, SH Ahsan, M Alexeev, GD Alkhazov, G Alton, A Alverson, G Alves, GA Anastasoaie, M Andeen, T Anderson, S Andrieu, B Arnoud, Y Askew, A Asman, B Jesus, ACSA Atramentov, O Autermann, C Avila, C Badaud, F Baden, A Baldin, B Balm, PW Banerjee, S Barberis, E Bargassa, P Baringer, P Barnes, C Barreto, J Bartlett, JF Bassler, U Bauer, D Bean, A Beauceron, S Begel, M Bellavance, A Beri, SB Bernardi, G Bernhard, R Bertram, I Besancon, M Beuselinck, R Bezzubov, VA Bhat, PC Bhatnagar, V Binder, M Biscarat, C Black, KM Blackler, I Blazey, G Blekman, F Blessing, S Bloch, D Blumenschein, U Boehnlein, A Boeriu, O Bolton, TA Borcherding, F Borissov, G Bos, K Bose, T Brandt, A Brock, R Brooijmans, G Bross, A Buchanan, NJ Buchholz, D Buehler, M Buescher, V Burdin, S Burnett, TH Busato, E Buszello, CP Butler, JM Cammin, J Caron, S Carvalho, W Casey, BCK Cason, NM Castilla-Valdez, H Chakrabarti, S Chakraborty, D Chan, KM Chandra, A Chapin, D Charles, F Cheu, E Cho, DK Choi, S Choudhary, B Christiansen, T Christofek, L Claes, D Clement, B Clement, C Coadou, Y Cooke, M Cooper, WE Coppage, D Corcoran, M Cothenet, A Cousinou, MC Cox, B Crepe-Renaudin, S Cutts, D da Motta, H Davies, B Davies, G Davis, GA De, K de Jong, P de Jong, SJ De La Cruz-Burelo, E Martins, CDO Dean, S Degenhardt, JD Deliot, F Demarteau, M Demina, R Demine, P Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Doidge, M Dong, H Doulas, S Dudko, LV Duflot, L Dugad, SR Duperrin, A Dyer, J Dyshkant, A Eads, M Edmunds, D Edwards, T Ellison, J Elmsheuser, J Elvira, VD Eno, S Ermolov, P Eroshin, OV Estrada, J Evans, H Evdokimov, A Evdokimov, VN Fast, J Fatakia, SN Feligioni, L Ferapontov, AV Ferbel, T Fiedler, F Filthaut, F Fisher, W Fisk, HE Fleck, I Fortner, M Fox, H Fu, S Fuess, S Gadfort, T Galea, CF Gallas, E Galyaev, E Garcia, C Garcia-Bellido, A Gardner, J Gavrilov, V Gay, P Gele, D Gelhaus, R Genser, K Gerber, CE Gershtein, Y Gillberg, D Ginther, G Golling, T Gollub, N Gomez, B Gounder, K Goussiou, A Grannis, PD Greder, S Greenlee, H Greenwood, ZD Gregores, EM Gris, P Grivaz, JF Groer, L Grunendahl, S Grunewald, MW Gurzhiev, SN Gutierrez, G Gutierrez, P Haas, A Hadley, NJ Hagopian, S Hall, I Hall, RE Han, C Han, L Hanagaki, K Harder, K Harel, A Harrington, R Hauptman, JM Hauser, R Hays, J Hebbeker, T Hedin, D Heinmiller, JM Heinson, AP Heintz, U Hensel, C Hesketh, G Hildreth, MD Hirosky, R Hobbs, JD Hoeneisen, B Hohlfeld, M Hong, SJ Hooper, R Houben, P Hu, Y Huang, J Hynek, V Iashvili, I Illingworth, R Ito, AS Jabeen, S Jaffre, M Jain, S Jain, V Jakobs, K Jenkins, A Jesik, R Johns, K Johnson, M Jonckheere, A Jonsson, P Juste, A Kafer, D Kahn, S Kajfasz, E Kalinin, AM Kalk, J Karmanov, D Kasper, J Kau, D Kaur, R Kehoe, R Kermiche, S Kesisoglou, S Khanov, A Kharchilava, A Kharzheev, YM Kim, H Kim, TJ Klima, B Kohli, JM Kopal, M Korablev, VM Kotcher, J Kothari, B Koubarovsky, A Kozelov, AV Kozminski, J Kryemadhi, A Krzywdzinski, S Kulik, Y Kumar, A Kunori, S Kupco, A Kurca, T Kvita, J Lager, S Lahrichi, N Landsberg, G Lazoflores, J Le Bihan, AC Lebrun, P Lee, WM Leflat, A Lehner, F Leonidopoulos, C Leveque, J Lewis, P Li, J Li, QZ Lima, JGR Lincoln, D Linn, SL Linnemann, J Lipaev, VV Lipton, R Lobo, L Lobodenko, A Lokajicek, M Lounis, A Love, P Lubatti, HJ Lueking, L Lynker, M Lyon, AL Maciel, AKA Madaras, RJ Mattig, P Magass, C Magerkurth, A Magnan, AM Makovec, N Mal, PK Malbouisson, HB Malik, S Malyshev, VL Mao, HS Maravin, Y Martens, M Mattingly, SEK Mayorov, AA McCarthy, R McCroskey, R Meder, D Melnitchouk, A Mendes, A Merkin, M Merritt, KW Meyer, A Meyer, J Michaut, M Miettinen, H Mitrevski, J Molina, J Mondal, NK Moore, RW Muanza, GS Mulders, M Mutaf, YD Nagy, E Narain, M Naumann, NA Neal, HA Negret, JP Nelson, S Neustroev, P Noeding, C Nomerotski, A Novaes, SF Nunnemann, T Nurse, E O'Dell, V O'Neil, DC Oguri, V Oliveira, N Oshima, N Otero y Garzon, GJ Padley, P Parashar, N Park, SK Parsons, J Partridge, R Parua, N Patwa, A Pawloski, G Perea, PM Perez, E Petroff, P Petteni, M Piegaia, R Pleier, MA Podesta-Lerma, PLM Podstavkov, VM Pogorelov, Y Pompos, A Pope, BG da Silva, WLP Prosper, HB Protopopescu, S Qian, J Quadt, A Quinn, B Rani, KJ Ranjan, K Rapidis, PA Ratoff, PN Reucroft, S Rijssenbeek, M Ripp-Baudot, I Rizatdinova, F Robinson, S Rodrigues, RF Royon, C Rubinov, P Ruchti, R Rud, VI Sajot, G Sanchez-Hernandez, A Sanders, MP Santoro, A Savage, G Sawyer, L Scanlon, T Schaile, D Schamberger, RD Schellman, H Schieferdecker, P Schmitt, C Schwanenberger, C Schwartzman, A Schwienhorst, R Sengupta, S Severini, H Shabalina, E Shamim, M Shary, V Shchukin, AA Shephard, WD Shivpuri, RK Shpakov, D Sidwell, RA Simak, V Sirotenko, V Skubic, P Slattery, P Smith, RP Smolek, K Snow, GR Snow, J Snyder, S Soldner-Rembold, S Song, X Sonnenschein, L Sopczak, A Sosebee, M Soustruznik, K Souza, M Spurlock, B Stanton, NR Stark, J Steele, J Stevenson, K Stolin, V Stone, A Stoyanova, DA Strandberg, J Strang, MA Strauss, M Strohmer, R Strom, D Strovink, M Stutte, L Sumowidagdo, S Sznajder, A Talby, M Tamburello, P Taylor, W Telford, P Temple, J Tomoto, M Toole, T Torborg, J Towers, S Trefzger, T Trincaz-Duvoid, S Tuchming, B Tully, C Turcot, AS Tuts, PM Uvarov, L Uvarov, S Uzunyan, S Vachon, B Van Kooten, R van Leeuwen, WM Varelas, N Varnes, EW Vartapetian, A Vasilyev, IA Vaupel, M Verdier, P Vertogradov, LS Verzocchi, M Villeneuve-Seguier, F Vlimant, JR Toerne, EV Vreeswijk, M Vu Anh, T Wahl, HD Wang, L Warchol, J Watts, G Wayne, M Weber, M Weerts, H Wegner, M Wermes, N White, A White, V Wicke, D Wijngaarden, DA Wilson, GW Wimpenny, SJ Wittlin, J Wobisch, M Womersley, J Wood, DR Wyatt, TR Xu, Q Xuan, N Yacoob, S Yamada, R Yan, M Yasuda, T Yatsunenko, YA Yen, Y Yip, K Yoo, HD Youn, SW Yu, J Yurkewicz, A Zabi, A Zatserklyaniy, A Zdrazil, M Zeitnitz, C Zhang, D Zhang, X Zhao, T Zhao, Z Zhou, B Zhu, J Zielinski, M Zieminska, D Zieminski, A Zitoun, R Zutshi, V Zverev, EG CA D0 Collaborat TI Production of WZ events in pp(-) collisions at root s=1.96 TeV and limits on anomalous WWZ couplings SO PHYSICAL REVIEW LETTERS LA English DT Article ID GAUGE-BOSON COUPLINGS; E(+)E(-) COLLISIONS; SECTOR; LEP AB We present results from a search for WZ production with subsequent decay to l nu l'(l) over bar'(l and l' = e or mu) using 0.30 fb(-1) of data collected by the D0 experiment between 2002 and 2004 at the Fermilab Tevatron. Three events with WZ decay characteristics are observed. With an estimated background of 0.71 +/- 0.08 events, we measure the WZ production cross section to be 4.5(-2.6)(+3.8) pb, with a 95% C.L. upper limit of 13.3 pb. The 95% C.L. limits for anomalous WWZ couplings are found to be -2.0 = 1.8x10(24) yr (90% C.L.) is set, corresponding to < m(nu)><= 0.2 to 1.1 eV, depending on the theoretical nuclear matrix elements used in the analysis. C1 Univ Milan, Dipartimento Fis, I-20126 Milan, Italy. Ist Nazl Fis Nucl, I-20126 Milan, Italy. Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA. Lab Nazl Gran Sasso, I-67010 Coppito, Italy. Univ Florence, Dipartimento Fis, I-50125 Florence, Italy. Ist Nazl Fis Nucl, I-50125 Florence, Italy. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Zaragoza, Lab Fis Nucl & Alta Energias, Zaragoza 50009, Spain. Leiden Univ, Kamerling Onnes Lab, NL-2300 RA Leiden, Netherlands. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Univ Insubria, Dipartimento Matemat & Fis, I-22100 Como, Italy. Ist Nazl Fis Nucl, I-22100 Como, Italy. Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Lab Nazl Legnaro, I-35020 Legnaro, Italy. RP Univ Milan, Dipartimento Fis, I-20126 Milan, Italy. RI Pallavicini, Marco/G-5500-2012; Nucciotti, Angelo/I-8888-2012; Gorla, Paolo/B-5243-2014; Sangiorgio, Samuele/F-4389-2014; Sisti, Monica/B-7550-2013; Barucci, Marco/D-4209-2012; capelli, silvia/G-5168-2012 OI Pallavicini, Marco/0000-0001-7309-3023; Nucciotti, Angelo/0000-0002-8458-1556; Sangiorgio, Samuele/0000-0002-4792-7802; Sisti, Monica/0000-0003-2517-1909; Barucci, Marco/0000-0003-0381-3376; capelli, silvia/0000-0002-0300-2752 NR 66 TC 83 Z9 84 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 SEP 30 PY 2005 VL 95 IS 14 AR 142501 DI 10.1103/PhysRevLett.95.142501 PG 4 WC Physics, Multidisciplinary SC Physics GA 969JG UT WOS:000232229800018 PM 16241648 ER PT J AU Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Borgland, AW Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Kelly, MP Cuhadar-Donszelmann, T Hearty, C Knecht, NS Mattison, TS McKenna, JA Thiessen, D Khan, A Kyberd, P Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Ivanchenko, VN Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Eschrich, I Kirkby, D Lankford, AJ Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Lu, A Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Yang, S Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Zhang, J Chen, A Eckhart, EA Harton, JL Soffer, A Toki, WH Wilson, RJ Zeng, Q Spaan, B Altenburg, D Brandt, T Brose, J Dickopp, M Feltresi, E Hauke, A Klose, V Lacker, HM Maly, E Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Sarti, A Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Lo Vetere, M Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Bailey, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Chai, X Charles, MJ Grenier, GJ Mallik, U Mohapatra, AK Ziegler, V Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Le Diberder, F Lepeltier, V Lutz, AM Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Coleman, JP Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Touramanis, C Cormack, CM Di Lodovico, F Brown, CL Cowan, G Flack, RL Flaecher, HU Green, MG Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Hodgkinson, MC Lafferty, GD Naisbit, MT Williams, JC Chen, C Farbin, A Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Lillard, V Roberts, DA Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Torrence, E Colecchia, F Dorigo, A Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Simi, G Walsh, J Haire, M Judd, D Paick, K Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Christ, S Schroder, H Wagner, G Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G Hamel de Monchenault, G Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Soha, A Stelzer, J Strube, J Su, D Sullivan, MK Suzuki, K Thompson, JM Va'vra, J Wagner, SR Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Saleem, M Wappler, FR Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Ricca, GD Dittongo, S Grancagnolo, S Lanceri, L Poropat, P Vitale, L Vuagnin, G Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, J Wu, SL Yu, Z Greene, MG Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Borgland, AW Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Kelly, MP Cuhadar-Donszelmann, T Hearty, C Knecht, NS Mattison, TS McKenna, JA Thiessen, D Khan, A Kyberd, P Teodorescu, L Blinov, AE Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Ivanchenko, VN Kravchenko, EA Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Yushkov, AN Best, D Bondioli, M Bruinsma, M Chao, M Eschrich, I Kirkby, D Lankford, AJ Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Buchanan, C Hartfiel, BL Weinstein, AJR Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L del Re, D Hadavand, HK Hill, EJ MacFarlane, DB Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Lu, A Mazur, MA Richman, JD Verkerke, W Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Nesom, G Schalk, T Schumm, BA Seiden, A Spradlin, P Williams, DC Wilson, MG Albert, J Chen, E Dubois-Felsmann, GP Dvoretskii, A Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Yang, S Andreassen, R Jayatilleke, S Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, P Chen, S Ford, WT Nauenberg, U Olivas, A Rankin, P Ruddick, WO Smith, JG Ulmer, KA Zhang, J Chen, A Eckhart, EA Harton, JL Soffer, A Toki, WH Wilson, RJ Zeng, Q Spaan, B Altenburg, D Brandt, T Brose, J Dickopp, M Feltresi, E Hauke, A Klose, V Lacker, HM Maly, E Nogowski, R Otto, S Petzold, A Schott, G Schubert, J Schubert, KR Schwierz, R Sundermann, JE Bernard, D Bonneaud, GR Grenier, P Schrenk, S Thiebaux, C Vasileiadis, G Verderi, M Bard, DJ Clark, PJ Gradl, W Muheim, F Playfer, S Xie, Y Andreotti, M Azzolini, V Bettoni, D Bozzi, C Calabrese, R Cibinetto, G Luppi, E Negrini, M Piemontese, L Sarti, A Anulli, F Baldini-Ferroli, R Calcaterra, A de Sangro, R Finocchiaro, G Patteri, P Peruzzi, IM Piccolo, M Zallo, A Buzzo, A Capra, R Contri, R Lo Vetere, M Macri, M Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Bailey, S Brandenburg, G Chaisanguanthum, KS Morii, M Won, E Dubitzky, RS Langenegger, U Marks, J Schenk, S Uwer, U Bhimji, W Bowerman, DA Dauncey, PD Egede, U Gaillard, JR Morton, GW Nash, JA Nikolich, MB Taylor, GP Chai, X Charles, MJ Grenier, GJ Mallik, U Mohapatra, AK Ziegler, V Cochran, J Crawley, HB Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Yi, J Arnaud, N Davier, M Giroux, X Grosdidier, G Hocker, A Le Diberder, F Lepeltier, V Lutz, AM Petersen, TC Pierini, M Plaszczynski, S Rodier, S Roudeau, P Schune, MH Stocchi, A Wormser, G Cheng, CH Lange, DJ Simani, MC Wright, DM Bevan, AJ Chavez, CA Coleman, JP Forster, IJ Fry, JR Gabathuler, E Gamet, R George, KA Hutchcroft, DE Parry, RJ Payne, DJ Touramanis, C Cormack, CM Di Lodovico, F Brown, CL Cowan, G Flack, RL Flaecher, HU Green, MG Jackson, PS McMahon, TR Ricciardi, S Salvatore, F Brown, D Davis, CL Allison, J Barlow, NR Barlow, RJ Hodgkinson, MC Lafferty, GD Naisbit, MT Williams, JC Chen, C Farbin, A Hulsbergen, WD Jawahery, A Kovalskyi, D Lae, CK Lillard, V Roberts, DA Blaylock, G Dallapiccola, C Hertzbach, SS Kofler, R Koptchev, VB Moore, TB Saremi, S Staengle, H Willocq, S Cowan, R Koeneke, K Sciolla, G Sekula, SJ Taylor, F Yamamoto, RK Kim, H Patel, PM Robertson, SH Lazzaro, A Lombardo, V Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Reidy, J Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Taras, P Viaud, B Nicholson, H Cavallo, N De Nardo, G Fabozzi, F Gatto, C Lista, L Monorchio, D Paolucci, P Piccolo, D Sciacca, C Baak, M Bulten, H Raven, G Snoek, HL Wilden, L Jessop, CP LoSecco, JM Allmendinger, T Benelli, G Gan, KK Honscheid, K Hufnagel, D Jackson, PD Kagan, H Kass, R Pulliam, T Rahimi, AM Ter-Antonyan, R Wong, QK Brau, J Frey, R Igonkina, O Lu, M Potter, CT Sinev, NB Strom, D Torrence, E Colecchia, F Dorigo, A Galeazzi, F Margoni, M Morandin, M Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Benayoun, M Briand, H Chauveau, J David, P Del Buono, L de la Vaissiere, C Hamon, O John, MJJ Leruste, P Malcles, J Ocariz, J Roos, L Therin, G Behera, PK Gladney, L Guo, QH Panetta, J Biasini, M Covarelli, R Pioppi, M Angelini, C Batignani, G Bettarini, S Bucci, F Calderini, G Carpinelli, M Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Simi, G Walsh, J Haire, M Judd, D Paick, K Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Tehrani, FS Voena, C Christ, S Schroder, H Wagner, G Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G Hamel de Monchenault, G Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Soha, A Stelzer, J Strube, J Su, D Sullivan, MK Suzuki, K Thompson, JM Va'vra, J Wagner, SR Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Saleem, M Wappler, FR Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Ricca, GD Dittongo, S Grancagnolo, S Lanceri, L Poropat, P Vitale, L Vuagnin, G Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, J Wu, SL Yu, Z Greene, MG Neal, H CA BaBar Collaboration TI Production and decay of Xi(0)(c) at BABAR SO PHYSICAL REVIEW LETTERS LA English DT Article ID BARYON-ANTIBARYON PAIRS; EXCLUSIVE DECAYS; PHYSICS AB Using 116.1 fb(-1) of data collected by the BABAR detector, we present an analysis of Xi(c)(0) production in B decays and from the c (c) over bar continuum, with the Xi(c)(0) decaying into Omega(-)K(+) and Xi(-)pi(+) final states. We measure the ratio of branching fractions B(Xi(c)(0)->Omega(-)K(+))/B(Xi(c)(0)->Xi(-)pi(+)) to be 0.294 +/- 0.018 +/- 0.016, where the first uncertainty is statistical and the second is systematic. The Xi(c)(0) momentum spectrum is measured on and 40 MeV below the Upsilon(4S) resonance. From these spectra the branching fraction product B(B ->Xi(c)(0)X)xB(Xi(c)(0)->Xi(-)pi(+)) is measured to be (2.11 +/- 0.19 +/- 0.25)x10(-4), and the cross-section product sigma(e(+)e(-)->Xi(c)(0)X)xB(Xi(c)(0)->Xi(-)pi(+)) from the continuum is measured to be (388 +/- 39 +/- 41) fb at a center-of-mass energy of 10.58 GeV. C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain. Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. Brunel Univ, Uxbridge UB8 3PH, Middx, England. Budker Inst Nucl Phys, Novosibirsk 630090, Russia. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. CALTECH, Pasadena, CA 91125 USA. Univ Cincinnati, Cincinnati, OH 45221 USA. Univ Colorado, Boulder, CO 80309 USA. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, LLR, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Harvard Univ, Cambridge, MA 02138 USA. Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany. Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England. Univ Iowa, Iowa City, IA 52242 USA. Iowa State Univ, Ames, IA 50011 USA. Lab Accelerateur Lineaire, F-91898 Orsay, France. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Liverpool, Liverpool L69 72E, Merseyside, England. Univ London, London E1 4NS, England. Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England. Univ Louisville, Louisville, KY 40292 USA. Univ Manchester, Manchester M13 9PL, Lancs, England. Univ Maryland, College Pk, MD 20742 USA. Univ Massachusetts, Amherst, MA 01003 USA. MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. McGill Univ, Montreal, PQ H3A 2T8, Canada. Univ Milan, Dipartimento Fis, I-20133 Milan, Italy. Ist Nazl Fis Nucl, I-20133 Milan, Italy. Univ Mississippi, University, MS 38677 USA. Univ Montreal, Lab Rene JA Leves, Montreal, PQ H3C 3J7, Canada. Mt Holyoke Coll, S Hadley, MA 01075 USA. Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy. Ist Nazl Fis Nucl, I-80126 Naples, Italy. NIKHEF H, Natl Inst Nucl & High Energy Phys, NL-1009 DB Amsterdam, Netherlands. Univ Notre Dame, Notre Dame, IN 46556 USA. Ohio State Univ, Columbus, OH 43210 USA. Univ Oregon, Eugene, OR 97403 USA. Univ Padua, Dipartimento Fis, I-35131 Padua, Italy. Ist Nazl Fis Nucl, I-35131 Padua, Italy. Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Paris 07, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Penn, Philadelphia, PA 19104 USA. 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Ist Nazl Fis Nucl, I-34127 Trieste, Italy. Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. RP Phys Particules Lab, F-74941 Annecy Le Vieux, France. RI Lusiani, Alberto/A-3329-2016; Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Roe, Natalie/A-8798-2012; Kolomensky, Yury/I-3510-2015; Lusiani, Alberto/N-2976-2015; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Negrini, Matteo/C-8906-2014; Cavallo, Nicola/F-8913-2012; Monge, Maria Roberta/G-9127-2012; Luppi, Eleonora/A-4902-2015; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo, Sergio/J-3957-2015; Morandin, Mauro/A-3308-2016; Saeed, Mohammad Alam/J-7455-2012; Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; M, Saleem/B-9137-2013; Sarti, Alessio/I-2833-2012 OI Lusiani, Alberto/0000-0002-6876-3288; Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico, Francesca/0000-0003-3952-2175; Kolomensky, Yury/0000-0001-8496-9975; Lusiani, Alberto/0000-0002-6876-3288; Pappagallo, Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Carpinelli, Massimo/0000-0002-8205-930X; Sciacca, Crisostomo/0000-0002-8412-4072; Adye, Tim/0000-0003-0627-5059; Lafferty, George/0000-0003-0658-4919; Wilson, Robert/0000-0002-8184-4103; Strube, Jan/0000-0001-7470-9301; Chen, Chunhui /0000-0003-1589-9955; Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195; Luppi, Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Lo Vetere, Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304; Morandin, Mauro/0000-0003-4708-4240; Saeed, Mohammad Alam/0000-0002-3529-9255; Peters, Klaus/0000-0001-7133-0662; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Sarti, Alessio/0000-0001-5419-7951 NR 12 TC 11 Z9 11 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. 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Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Safai Tehrani, F Voena, C Schroder, H Wagner, G Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G Hamel de Monchenault, G Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D van Bakel, N Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Williams, G Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H AF Aubert, B Barate, R Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Pappagallo, M Pompili, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Breon, AB Brown, DN Button-Shafer, J Cahn, RN Charles, E Day, CT Gill, MS Gritsan, AV Groysman, Y Jacobsen, RG Kadel, RW Kadyk, J Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Fritsch, M Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Chevalier, N Cottingham, WN Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P 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Bucci, F Calderini, G Carpinelli, M Cenci, R Forti, F Giorgi, MA Lusiani, A Marchiori, G Morganti, M Neri, N Paoloni, E Rama, M Rizzo, G Walsh, J Haire, M Judd, D Wagoner, DE Biesiada, J Danielson, N Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Bellini, F Cavoto, G D'Orazio, A Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Li Gioi, L Mazzoni, MA Morganti, S Piredda, G Polci, F Safai Tehrani, F Voena, C Schroder, H Wagner, G Waldi, R Adye, T De Groot, N Franek, B Gopal, GP Olaiya, EO Wilson, FF Aleksan, R Emery, S Gaidot, A Ganzhur, SF Giraud, PF Graziani, G Hamel de Monchenault, G Kozanecki, W Legendre, M London, GW Mayer, B Vasseur, G Yeche, C Zito, M Purohit, MV Weidemann, AW Wilson, JR Yumiceva, FX Abe, T Allen, MT Aston, D van Bakel, N Bartoldus, R Berger, N Boyarski, AM Buchmueller, OL Claus, R Coleman, JP Convery, MR Cristinziani, M Dingfelder, JC Dong, D Dorfan, J Dujmic, D Dunwoodie, W Fan, S Field, RC Glanzman, T Gowdy, SJ Hadig, T Halyo, V Hast, C Hryn'ova, T Innes, WR Kelsey, MH Kim, P Kocian, ML Leith, DWGS Libby, J Luitz, S Luth, V Lynch, HL Marsiske, H Messner, R Muller, DR O'Grady, CP Ozcan, VE Perazzo, A Perl, M Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, S Thompson, JM Va'vra, J Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Roat, C Ahmed, M Ahmed, S Alam, MS Ernst, JA Saeed, MA Wappler, FR Zain, SB Bugg, W Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Satpathy, A Schwitters, RF Izen, JM Kitayama, I Lou, XC Williams, G Ye, S Bianchi, F Bona, M Gallo, F Gamba, D Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Dittongo, S Grancagnolo, S Lanceri, L Vitale, L Martinez-Vidal, F Panvini, RS Banerjee, S Bhuyan, B Brown, CM Fortin, D Hamano, K Kowalewski, R Roney, JM Sobie, RJ Back, JJ Harrison, PF Latham, TE Mohanty, GB Band, HR Chen, X Cheng, B Dasu, S Datta, M Eichenbaum, AM Flood, KT Graham, M Hollar, JJ Johnson, JR Kutter, PE Li, H Liu, R Mellado, B Mihalyi, A Pan, Y Prepost, R Tan, P von Wimmersperg-Toeller, JH Wu, SL Yu, Z Neal, H CA BaBar Collaboration TI Observation of a broad structure in the pi(+)pi(-)J/psi mass spectrum around 4.26 GeV/c(2) SO PHYSICAL REVIEW LETTERS LA English DT Article AB We study initial-state radiation events, e(+)e(-)->gamma(ISR)pi(+)pi(-)J/psi, with data collected with the BABAR detector. We observe an accumulation of events near 4.26 GeV/c(2) in the invariant-mass spectrum of pi(+)pi(-)J/psi. Fits to the mass spectrum indicate that a broad resonance with a mass of about 4.26 GeV/c(2) is required to describe the observed structure. The presence of additional narrow resonances cannot be excluded. The fitted width of the broad resonance is 50 to 90 MeV/c(2), depending on the fit hypothesis. C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France. Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain. Univ Bari, Dipartimento Fis, I-70126 Bari, Italy. Univ Bari, Ist Nazl Fis Nucl, I-70126 Bari, Italy. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Bergen, Inst Phys, N-5007 Bergen, Norway. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany. Univ Bristol, Bristol BS8 1TL, Avon, England. Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. Brunel Univ, Uxbridge UB8 3PH, Middx, England. Budker Inst Nucl Phys, Novosibirsk 630090, Russia. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. CALTECH, Pasadena, CA 91125 USA. Univ Cincinnati, Cincinnati, OH 45221 USA. Univ Colorado, Boulder, CO 80309 USA. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, LLR, F-91128 Palaiseau, France. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy. Univ Ferrara, Ist Nazl Fis Nucl, I-44100 Ferrara, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Univ Genoa, Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Harvard Univ, Cambridge, MA 02138 USA. Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany. Univ London Imperial Coll Sci & Technol, London SW7 2AZ, England. Univ Iowa, Iowa City, IA 52242 USA. Iowa State Univ, Ames, IA 50011 USA. Accelerateur Lineaire Lab, F-91898 Orsay, France. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Liverpool, Liverpool L69 72E, Merseyside, England. Queen Mary Univ London, London E1 4NS, England. Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England. Univ Louisville, Louisville, KY 40292 USA. Univ Manchester, Manchester M13 9PL, Lancs, England. Univ Maryland, College Pk, MD 20742 USA. Univ Massachusetts, Amherst, MA 01003 USA. MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. McGill Univ, Montreal, PQ H3A 2T8, Canada. Univ Milan, Dipartimento Fis, I-20133 Milan, Italy. Univ Milan, Ist Nazl Fis Nucl, I-20133 Milan, Italy. Univ Mississippi, University, MS 38677 USA. Univ Montreal, Lab Rene JA Levesque, Montreal, PQ H3C 3J7, Canada. Mt Holyoke Coll, S Hadley, MA 01075 USA. Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy. Univ Naples Federico II, Ist Nazl Fis Nucl, I-80126 Naples, Italy. NIKHEF, Natl Inst Nucl Phys & High Energy Phys, NL-1009 DB Amsterdam, Netherlands. Univ Notre Dame, Notre Dame, IN 46556 USA. Ohio State Univ, Columbus, OH 43210 USA. Univ Oregon, Eugene, OR 97403 USA. Univ Padua, Dipartimento Fis, I-35131 Padua, Italy. Univ Padua, Ist Nazl Fis Nucl, I-35131 Padua, Italy. Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Paris 07, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. Univ Penn, Philadelphia, PA 19104 USA. Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. Univ Perugia, Ist Nazl Fis Nucl, I-06100 Perugia, Italy. Univ Pisa, Scuola Normale Super Pisa, Dipartimento Fis, I-56127 Pisa, Italy. Univ Pisa, Ist Nazl Fis Nucl, Dipartimento Fis, I-56127 Pisa, Italy. Prairie View A&M Univ, Prairie View, TX 77446 USA. Princeton Univ, Princeton, NJ 08544 USA. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Univ Roma La Sapienza, Ist Nazl Fis Nucl, I-00185 Rome, Italy. Univ Rostock, D-18051 Rostock, Germany. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France. Univ S Carolina, Columbia, SC 29208 USA. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Stanford Univ, Stanford, CA 94305 USA. SUNY Albany, Albany, NY 12222 USA. Univ Tennessee, Knoxville, TN 37996 USA. Univ Texas, Austin, TX 78712 USA. Univ Texas, Richardson, TX 75083 USA. Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy. Univ Turin, Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. Univ Trieste, Ist Nazl Fis Nucl, I-34127 Trieste, Italy. Univ Valencia, IFIC, CSIC, E-46071 Valencia, Spain. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. Univ Wisconsin, Madison, WI 53706 USA. Yale Univ, New Haven, CT 06511 USA. RP Phys Particules Lab, F-74941 Annecy Le Vieux, France. RI Lusiani, Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; 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; Cavallo, Nicola/F-8913-2012; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo, Sergio/J-3957-2015; Lusiani, Alberto/N-2976-2015; Saeed, Mohammad Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Roe, Natalie/A-8798-2012; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012 OI Wilson, Robert/0000-0002-8184-4103; Strube, Jan/0000-0001-7470-9301; Chen, Chunhui /0000-0003-1589-9955; Raven, Gerhard/0000-0002-2897-5323; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; 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; Hamel de Monchenault, Gautier/0000-0002-3872-3592; Carpinelli, Massimo/0000-0002-8205-930X; Sciacca, Crisostomo/0000-0002-8412-4072; Adye, Tim/0000-0003-0627-5059; Lafferty, George/0000-0003-0658-4919; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304; Lusiani, Alberto/0000-0002-6876-3288; Saeed, Mohammad Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963; Peters, Klaus/0000-0001-7133-0662; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455 NR 14 TC 409 Z9 418 U1 1 U2 29 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 30 PY 2005 VL 95 IS 14 AR 142001 DI 10.1103/PhysRevLett.95.142001 PG 7 WC Physics, Multidisciplinary SC Physics GA 969JG UT WOS:000232229800015 PM 16090800 ER PT J AU Caldwell, RR Linder, EV AF Caldwell, RR Linder, EV TI Limits of quintessence SO PHYSICAL REVIEW LETTERS LA English DT Article ID HUBBLE-SPACE-TELESCOPE; COSMOLOGICAL CONSTANT; DARK ENERGY; CONSTRAINTS AB We present evidence that the simplest particle-physics scalar-field models of dynamical dark energy can be separated into distinct behaviors based on the acceleration or deceleration of the field as it evolves down its potential towards a zero minimum. We show that these models occupy narrow regions in the phase plane of w and w('), the dark energy equation of state and its time derivative in units of the Hubble time. Restricting an energy scale of the dark energy microphysics limits how closely a scalar field can resemble a cosmological constant. These results, indicating a desired measurement resolution of order sigma(w('))approximate to(1+w), define firm targets for observational tests of the physics of dark energy. C1 Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA. Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA. RP Caldwell, RR (reprint author), Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA. OI Caldwell, Robert/0000-0001-7490-7463 NR 31 TC 274 Z9 277 U1 1 U2 5 PU AMERICAN 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 30 PY 2005 VL 95 IS 14 AR 141301 DI 10.1103/PhysRevLett.95.141301 PG 4 WC Physics, Multidisciplinary SC Physics GA 969JG UT WOS:000232229800010 PM 16241640 ER EF