FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Kostora, MR Hsu, SC Wurden, GA AF Kostora, M. R. Hsu, S. C. Wurden, G. A. TI Twenty-channel bolometer array for studying impurity radiation and transport in the TCS field-reversed configuration SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID CURRENT-DRIVE; TOKAMAK; RESOLUTION AB A bolometer array diagnostic has been developed for the University of Washington Translation, Confinement, and Sustainment (TCS) field-reversed configuration (FRC) experiment in order to measure radially resolved total radiated power per unit length of the FRC. This will provide radiation energy loss information, useful in power balance and impurity studies. The 20-element photodiode bolometer will be mounted at the midplane of the TCS cylindrical vacuum chamber to view the rotating magnetic field (RMF) generated FRC plasma. Key features of this new bolometer array are (1) extensive electrical shielding against the RMF, (2) robust electrical isolation, (3) trans-impedance amplifiers using a microcoax interface at the array and a fiber optic interface to the screen room, and (4) a custom glass-on-metal socket for the 20-element photodiode chip to ensure high vacuum compatibility. The bolometer array can be retracted behind a gate valve using a stepper motor to protect it during vacuum chamber bakeout. The slit assembly housing is interchangeable to provide flexibility for the viewing sightlines. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. RP Kostora, MR (reprint author), Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. RI Wurden, Glen/A-1921-2017; OI Wurden, Glen/0000-0003-2991-1484; Hsu, Scott/0000-0002-6737-4934 NR 8 TC 1 Z9 1 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 2006 VL 77 IS 10 AR 10E511 DI 10.1063/1.2229190 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800085 ER PT J AU Kubota, S Peebles, WA Nguyen, XV Crocker, NA Roquemore, AL AF Kubota, S. Peebles, W. A. Nguyen, X. V. Crocker, N. A. Roquemore, A. L. TI Ultrafast millimeter-wave frequency-modulated continuous-wave reflectometry for NSTX SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID DENSITY PROFILE MEASUREMENTS; FLUCTUATION MEASUREMENTS; MICROWAVE REFLECTOMETRY; FUSION PLASMAS; TOKAMAK; SYSTEM AB The millimeter-wave frequency-modulated continuous-wave (FM-CW) reflectometer on NSTX is a multichannel system providing electron density profile measurements with a frequency coverage of 13 - 53 GHz [corresponding O-mode density range of (0.21 - 3.5) x 10(13) cm(-3)]. Recently, this system has been modified to allow ultrafast full-band sweeps for repetition intervals down to 10 mu s. For this system to function as a fluctuation diagnostic it is crucial to eliminate artifacts in the phase derivative caused by nonlinearities in the frequency sweep; we introduce a simple hardware technique for reducing these artifacts to congruent to 0.3%. For NSTX, the additional bandwidth (<= 100 kHz) greatly enhances the capability of the FM-CW reflectometer as a diagnostic for low frequency magnetohydrodynamics instabilities (e. g., internal kinks, resistive wall modes, neoclassical tearing modes, as well as fast-particle driven fishbones and low frequency toroidal Alfven eigenmodes). (c) 2006 American Institute of Physics. C1 Univ Calif Los Angeles, Inst Plasma & Fus Res, Los Angeles, CA 90095 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Kubota, S (reprint author), Univ Calif Los Angeles, Inst Plasma & Fus Res, Los Angeles, CA 90095 USA. EM skubota@ucla.edu NR 17 TC 5 Z9 5 U1 1 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E926 DI 10.1063/1.2351894 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800159 ER PT J AU Kuranz, CC Blue, BE Drake, RP Robey, HF Hansen, JF Knauer, JP Grosskopf, MJ Krauland, C Marion, DC AF Kuranz, C. C. Blue, B. E. Drake, R. P. Robey, H. F. Hansen, J. F. Knauer, J. P. Grosskopf, M. J. Krauland, C. Marion, D. C. TI Dual, orthogonal, backlit pinhole radiography in OMEGA experiments SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID RAY; SPECTROSCOPY AB Backlit pinhole radiography used with ungated film as a detector creates x-ray radiographs with increased resolution and contrast. Current hydrodynamics experiments on the OMEGA Laser use a three-dimensional sinusoidal pattern as a seed perturbation for the study of instabilities. The structure of this perturbation makes it highly desirable to obtain two simultaneous orthogonal backlighting views. We accomplished this using two backlit pinholes each mounted 12 mm from the target. The pinholes, of varying size and shape, were centered on 5 mm square foils of 50 mu m thick Ta. The backlighting is by K-alpha emission from a 500 mu m square Ti or Sc foil mounted 500 mu m from the Ta on a plastic substrate. Four laser beams overfill the metal foil, so that the expanding plastic provides radial tamping of the expanding metal plasma. The resulting x-rays pass through the target onto (ungated) direct exposure film (DEF). Interference between the two views is reduced by using a nose cone in front of the DEF, typically with a 9 mm Ta aperture and with magnets to deflect electrons. Comparison of varying types of pinholes and film exposures will be presented from recent experiments as well as an analysis of the background noise created using this experimental technique. c 2006 American Institute of Physics. C1 Univ Michigan, Ann Arbor, MI 48109 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Rochester, Rochester, NY 14623 USA. RP Kuranz, CC (reprint author), Univ Michigan, 2455 Hayward St, Ann Arbor, MI 48109 USA. RI Drake, R Paul/I-9218-2012 OI Drake, R Paul/0000-0002-5450-9844 NR 13 TC 22 Z9 23 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E327 DI 10.1063/1.2351870 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800074 ER PT J AU Kuritsyn, A Craig, D Fiksel, G Miller, M Cylinder, D Yamada, M AF Kuritsyn, Alexey Craig, Darren Fiksel, Gennady Miller, Matt Cylinder, David Yamada, Masaaki TI Local measurements of plasma ion dynamics with optical probes SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID REVERSED-FIELD PINCH; MAGNETIC RECONNECTION AB Two insertable optical probes have been constructed to measure local ion temperature and flow velocity using the idea proposed by Fiksel et al. [Rev. Sci. Instrum. 69, 2024 (1998)]. The light from plasma is collected by an optical fiber bundle and transported to a high resolution spectrometer. Spatial resolution of a few centimeters is achieved by using a collimator and a view dump. One ion dynamics spectroscopy (IDS) probe is employed in the edge plasma of Madison Symmetric Torus reversed field pinch in combination with the high throughput (f/4.5) and high resolution (0.15 nm/mm) IDS-II spectrometer. It has provided local ion temperature measurements of carbon and helium impurities with temporal resolution of 10 mu s and accuracy of about 5 eV. The second instrument is used on the Magnetic Reconnection eXperiment, where the local temperature of helium ions (similar to 10 eV) has been measured with 1 eV accuracy. Details of the designs, calibrations, and data analysis are described. (c) 2006 American Institute of Physics. C1 Univ Wisconsin, Dept Phys, Ctr Magnet Self Org Lab & Astrophys Plasmas, Madison, WI 53706 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Kuritsyn, A (reprint author), Univ Wisconsin, Dept Phys, Ctr Magnet Self Org Lab & Astrophys Plasmas, 1150 Univ Ave, Madison, WI 53706 USA. RI Yamada, Masaaki/D-7824-2015 OI Yamada, Masaaki/0000-0003-4996-1649 NR 13 TC 2 Z9 2 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 2006 VL 77 IS 10 AR 10F112 DI 10.1063/1.2220017 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800178 ER PT J AU Lake, PW Bailey, JE Rochau, GA Gard, P Petmecky, D Bump, M Joseph, NR Moore, TC Nielsen-Weber, LB AF Lake, P. W. Bailey, J. E. Rochau, G. A. Gard, P. Petmecky, D. Bump, M. Joseph, N. R. Moore, T. C. Nielsen-Weber, L. B. TI Twin-elliptical-crystal time-and space-resolved soft x-ray spectrometer SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID SPECTROGRAPH; REGION AB Elliptical crystal spectrometers equipped with time-gated microchannel plate (MCP) detectors provide time-, space-, and spectrally resolved data. A common problem is that the number of time resolution elements is limited by the number of MCP frames. The number of frames that fit on a given MCP is limited by the image size and the alignment tolerance. At the Z facility these problems have been addressed with twin-elliptical-crystal spectrometers. Using two crystals and detectors doubles the number of frames available. This enables measurements with similar to 350 ps time resolution while still recording data from an similar to 4 ns wide time window. Alternatively, the twin crystal design allows simultaneous measurements with different crystals to investigate different spectral regimes. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. PG Design, Albuquerque, NM 87185 USA. TMI Inc, Albuquerque, NM 87185 USA. Ktech Corp Inc, Albuquerque, NM 87185 USA. RP Lake, PW (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 13 TC 5 Z9 7 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10F315 DI 10.1063/1.2227444 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800213 ER PT J AU Lanier, NE Holmes, RL Workman, J Graham, P Chambers, DM Moore, A AF Lanier, N. E. Holmes, R. L. Workman, J. Graham, P. Chambers, D. M. Moore, A. TI Laser-based platform for studying material hydrodynamics under heated and shocked conditions SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB Understanding how target defects and surface finish perturbations affect ignition capsule mixing is a critical goal of the inertial confinement fusion (ICF) community. While initial characterization of these features is essential to understanding the physics of ICF implosions, it is the condition of the features at the time of shock passage that ultimately dictates their impact on capsule performance. The Off-Hugoniot experiment was designed to quantify the evolution of material interfaces under heated and subsequently shocked conditions. The platform uses tin L-shell radiation to uniformly heat an epoxy/ foam-layered package. As the epoxy expands into the foam, an independently controlled shock impacts the evolving interface. The resulting hydrodynamics are imaged via x-ray radiography. Beyond the flexibility of independent heating and shock control, the epoxy can be configured with any desired features, such as gaps, chamfers, and single and multimode perturbations. An overview of the experimental platform, data from the ongoing OMEGA campaign, and future plans are presented. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. AtoWeapons Estab, Aldermaston RG7 4PR, England. RP Lanier, NE (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 9 TC 2 Z9 2 U1 1 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E318 DI 10.1063/1.2221898 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800065 ER PT J AU Lee, KC Domier, CW Johnson, M Luhmann, NC Park, H Soukhanovskii, VA AF Lee, K. C. Domier, C. W. Johnson, M. Luhmann, N. C., Jr. Park, H. Soukhanovskii, V. A. TI Survey of diagnostic systems for the study of gyrocenter shifts on National Spherical Torus Experiment SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID ELECTRIC-FIELD; H-MODE; CONFINEMENT; THRESHOLD AB The formation of the radial electric field at the boundary of high temperature plasmas can be induced by the radial "gyrocenter shift" during the charge exchange process with neutrals. The model of the gyrocenter shift to be discussed here is different from the conventional gyrocenter drift. Specifically, in this model, the induced electric field is a strong function of neutral density and its gradient in addition to the conventional E x B and diamagnetic terms. The preliminary calculation of the gyrocenter shift of the H-mode plasma on the National Spherical Torus Experiment (NSTX) demonstrates the sensitive dependence of the radial electric field on the neutral density profile. An assessment of diagnostics on NSTX is carried out for the measurement of neutral density. The required spatial and time resolutions for the measurements are 2 mm and a few kilohertz, respectively. In this article, the predicted profile of the edge electric field on NSTX based on the gyrocenter shift model is discussed in conjunction with the in and out asymmetry of diverter D-alpha camera data and the measurement of the edge electron density by the far infrared tangential interferometer/polarimeter system. (c) 2006 American Institute of Physics. C1 Univ Calif Davis, Davis, CA 95616 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Lee, KC (reprint author), Univ Calif Davis, Davis, CA 95616 USA. NR 10 TC 1 Z9 1 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 2006 VL 77 IS 10 AR 10F505 DI 10.1063/1.2220079 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800235 ER PT J AU Li, CK Seguin, FH Frenje, JA Rygg, JR Petrasso, RD Town, RPJ Amendt, PA Hatchett, SP Landen, OL Mackinnon, AJ Patel, PK Smalyuk, VA Knauer, JP Sangster, TC Stoeckl, C AF Li, C. K. Seguin, F. H. Frenje, J. A. Rygg, J. R. Petrasso, R. D. Town, R. P. J. Amendt, P. A. Hatchett, S. P. Landen, O. L. Mackinnon, A. J. Patel, P. K. Smalyuk, V. A. Knauer, J. P. Sangster, T. C. Stoeckl, C. TI Monoenergetic proton backlighter for measuring E and B fields and for radiographing implosions and high-energy density plasmas (invited). SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID INERTIAL-CONFINEMENT-FUSION; OMEGA; CAPSULES; SPECTRA AB A novel monoenergetic proton backlighter source and matched imaging detector have been utilized on the OMEGA laser system to study electric (E) and magnetic (B) fields generated by laser-plasma interactions and will be utilized in the future to radiograph implosions and high-energy density (HED) plasmas. The backlighter consists of an imploding glass microballoon with D He-3 fuel, producing 14.7 MeV D He-3 protons and 3 MeV DD protons that are then passed through a mesh that divides the protons into beamlets. For quantitative study of E+B field structure, monoenergetic protons have several unique advantages compared to the broad energy spectrum used in previous experiments. Recent experiments have been performed with a single laser beam (intensity of similar to 10(14) W/cm(2)) interacting with a CH foil, and B fields of similar to 0.5 MG and E fields of similar to 1.5 x 10(8) V/m have been measured using proton deflectometry. LASNEX simulations are being used to interpret these experiments. Additional information will also be presented on the application of this technique to measuring E and B fields associated with Hohlraums and directly driven implosions, to radiographically mapping the areal density (rho R) distribution in imploded capsules, and to radiographing HED plasmas. (c) 2006 American Institute of Physics. C1 MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. RP Li, CK (reprint author), MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA. EM li@psfc.mit.edu RI Patel, Pravesh/E-1400-2011; MacKinnon, Andrew/P-7239-2014 OI MacKinnon, Andrew/0000-0002-4380-2906 NR 25 TC 33 Z9 33 U1 2 U2 9 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E725 DI 10.1063/1.2228252 PG 7 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800128 ER PT J AU Link, A Chowdhury, EA Morrison, JT Ovchinnikov, VM Offermann, D Van Woerkom, L Freeman, RR Pasley, J Shipton, E Beg, F Rambo, P Schwarz, J Geissel, M Edens, A Porter, JL AF Link, Anthony Chowdhury, Enam A. Morrison, John T. Ovchinnikov, Vladimir M. Offermann, Dustin Van Woerkom, Linn Freeman, Richard R. Pasley, John Shipton, Erik Beg, Farhat Rambo, Patrick Schwarz, Jens Geissel, Matthias Edens, Aaron Porter, John L. TI Development of an in situ peak intensity measurement method for ultraintense single shot laser-plasma experiments at the Sandia Z petawatt facility SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID DOUBLE-IONIZATION; HELIUM; FUSION; PULSE AB Using the physical process of ultraintense field ionization of high charge states of inert gas ions, we have developed a method of peak intensity measurement at the focus of high energy short pulse lasers operating in single shot mode. The technique involves detecting ionization products created from a low pressure gas target at the laser focus via time of flight detector. The observation of high ion charge states collected by the detector yields peak intensity at the focus when compared with the results obtained from well established tunnel ionization models. An initial peak intensity measurement of 5 x 10(16) W cm(-2) was obtained for a 1.053 mu m center wavelength, 0.4 J pulse with 1 ps pulse duration focused with an f/5.5 off-axis parabola. Experiments with multijoule level, 500 fs laser pulses are on the way. (c) 2006 American Institute of Physics. C1 Ohio State Univ, Columbus, OH 43210 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Link, A (reprint author), Ohio State Univ, 191 W Woodruff Ave, Columbus, OH 43210 USA. RI Brennan, Patricia/N-3922-2015; OI Offermann, Dustin/0000-0002-6033-4905 NR 10 TC 8 Z9 9 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E723 DI 10.1063/1.2336469 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800126 ER PT J AU Liu, D Heidbrink, WW Darrow, DS Roquemore, AL Medley, SS Shinohara, K AF Liu, D. Heidbrink, W. W. Darrow, D. S. Roquemore, A. L. Medley, S. S. Shinohara, K. TI Performance of the solid state neutral particle analyzer array on the national spherical torus experiment SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID NATURAL DIAMOND DETECTOR; FUSION TEST REACTOR; LHD; OPERATION; NSTX AB The solid state neutral particle analyzer (SSNPA) array on the national spherical torus experiment (NSTX) consists of four chords with tangency radii of 60, 90, 100, and 120 cm that view across the three coinjection neutral beam lines. Each chord utilizes a silicon photodiode that is coupled to fast digitizers to measure the energy distribution of charge exchange fast neutral particles (30-100keV). By the end of the NSTX 2005 experimental campaign, the electromagnetic noise in the SSNPA was reduced by half and reasonable signals were obtained with good electromagnetic shielding, fast digitization of raw signals, software-based pulse height analysis, and pulse shape discrimination. Energy resolution of similar to 10 keV and time resolution of 2 ms have been achieved. Temporal evolutions of energetic neutral flux obtained with the SSNPA are in good agreement with those obtained with the E parallel to B-type neutral particle analyzer. With these improvements, the SSNPA can be used to study magnetohydrodynamic instabilities and fast ion redistribution. Example data from plasma discharges are presented along with the noise reduction techniques and postshot pulse height analysis methods. (c) 2006 American Institute of Physics. C1 Univ Calif Irvine, Irvine, CA 92697 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Japan Atom Energy Agcy, Ibaraki 3110193, Japan. RP Liu, D (reprint author), Univ Calif Irvine, Irvine, CA 92697 USA. RI Liu, Deyong/Q-2797-2015 OI Liu, Deyong/0000-0001-9174-7078 NR 14 TC 14 Z9 14 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10F113 DI 10.1063/1.2227440 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800179 ER PT J AU Mack, JM Caldwell, SE Evans, SC Sedillo, TJ Wilson, DC Young, CS Horsfield, CJ Griffith, RL Lerche, RA AF Mack, J. M. Caldwell, S. E. Evans, S. C. Sedillo, T. J. Wilson, D. C. Young, C. S. Horsfield, C. J. Griffith, R. L. Lerche, R. A. TI Multiplexed gas Cherenkov detector for reaction-history measurements SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID BURN HISTORY; FUSION; DIAGNOSTICS; IGNITION AB A diagnostic is being designed for the National Ignition Facility, using fusion gamma rays to measure highly time-resolved bang times and deuterium-tritium (d-t) interaction rates for imploding inertial fusion capsules. As a complement to neutron-based methods, gas Cherenkov detectors were chosen for this purpose because of proven ultrahigh bandwidth, thresholding versatility, and minimal time-of-flight dispersion. Gas Cherenkov detector prototypes, involving streak cameras and fast photomultiplier, microchannel plate detectors, are being tested using d-t implosions at the Omega Laser Facility. The possibility of simultaneous streak camera and photomultiplier, microchannel plate recordings of a source in one gas Cherenkov detector instrument is advantageous for reasons of independent measurement and extended reaction-history coverage. A multiplexed gas Cherenkov detector system was demonstrated successfully using electron pulses produced by the Idaho State University linear electron accelerator. A reaction-history diagnostic scheme composed of several types of detectors is proposed. The detectors considered reflect current and improving technology that allows coverage over a significant range of a reaction history generated from National Ignition Facility implosions. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Atom Weapons Estab, Reading RG7 4PR, Berks, England. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Mack, JM (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 17 TC 16 Z9 25 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 2006 VL 77 IS 10 AR 10E728 DI 10.1063/1.2351912 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800131 ER PT J AU Mackinnon, AJ Niemann, C Piston, K Holtmeier, G McCarville, T Jones, G Reinbachs, I Costa, R Celeste, J Griffith, R Kirkwood, RK MacGowan, BJ Glenzer, SH AF Mackinnon, A. J. Niemann, C. Piston, K. Holtmeier, G. McCarville, T. Jones, G. Reinbachs, I. Costa, R. Celeste, J. Griffith, R. Kirkwood, R. K. MacGowan, B. J. Glenzer, S. H. TI Qualification of a near backscattering imaging system on the National Ignition Facility SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID PLASMAS AB A near backscattering imaging diagnostic system has been implemented, qualified, and fielded on the first quad of beams on the National Ignition Facility [E. M. Campbell and W. J. Hogan, Plasma Phys. Controlled Fusion 41, B39 (1999)]. This diagnostic image diffusing scatter plates, placed around the final focus lenses on the NIF target chamber, to quantitatively measure the fraction of light backscattered outside of the incident cone of the focusing optics. The imaging system consists of a wide-angle lens coupled to a gated charged coupled device camera, providing 3 mm resolution over a 2 m field of view. To account for changes of the system throughput due to exposure to target debris the system was routinely calibrated in situ at 532 and 355 nm using a dedicated pulsed laser source. The diagnostic and calibration methods will be described together with recent results from the NIF early light shots. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Mackinnon, AJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI MacKinnon, Andrew/P-7239-2014 OI MacKinnon, Andrew/0000-0002-4380-2906 NR 11 TC 6 Z9 6 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 2006 VL 77 IS 10 AR 10E529 DI 10.1063/1.2336466 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800103 ER PT J AU May, MJ Clancy, T Fittinghoff, D Halvorson, C Mills, T Nikitin, A Perry, T Roberson, GP Smith, D Teruya, A Miller, EK Trainham, C AF May, M. J. Clancy, T. Fittinghoff, D. Halvorson, C. Mills, T. Nikitin, A. Perry, T. Roberson, G. P. Smith, D. Teruya, A. Miller, E. K. Trainham, C. TI High bandwidth data recording systems for pulsed power and laser produced plasma experiments SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID OPTICAL FIBERS AB We present two high bandwidth data transmission and recording systems for the measurement of transient signals during pulsed power and laser produced plasmas. These systems use fiber optic cables to transmit analog data over long distances to high bandwidth digitizing oscilloscopes. One system is based on the direct modulation of a laser diode and has a bandwidth of 1.5 GHz. The other system is based upon a Mach-Zehnder modulator and has a bandwidth of 12 GHz, and is limited by the photoreceiver. The signals are recorded on commercial digitizing oscilloscopes that have approximately six effective bits. The transmission systems use many off-the-shelf components from the telecommunications industry and thus have a high reliability and a moderate cost. Investigation of the reduction in optical transmission of the fibers during exposure to high dose radiation will also be discussed. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Bechtel Nevada, Special Technol Lab, Santa Barbara, CA 93111 USA. RP May, MJ (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. EM may13@llnl.gov NR 5 TC 1 Z9 1 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10F504 DI 10.1063/1.2219417 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800234 ER PT J AU Moran, MJ Lerche, RA Mant, G Glebov, VY Sangster, TC Mack, JM AF Moran, M. J. Lerche, R. A. Mant, G. Glebov, V. Yu. Sangster, T. C. Mack, J. M. TI Optical lightpipe as a high-bandwidth fusion diagnostic SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB A recent series of experiments at the University of Rochester Laboratory for Laser Energetics OMEGA facility studied the feasibility of using radiation-to-light converters and high-bandwidth optical signal transmission to remote recording devices as an alternate nuclear diagnostic method. A prototype system included a radiation-to-light converter, a multiple-section lightpipe consisting of stainless steel tubes with polished interiors and turning mirrors, and a streak camera or photomultiplier/digitizer combination for signal recording. Several different radiation-to-light converters (scintillators, glasses, plastics, and pressurized CO2) performed well and produced predictable optical emissions. The lightpipe transmitted high-bandwidth optical signals to the recording stations. Data were recorded with the streak camera, the photomultiplier/digitizer, and with both recorders simultaneously. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Moran, MJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 7 TC 3 Z9 9 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 2006 VL 77 IS 10 AR 10E718 DI 10.1063/1.2227438 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800121 ER PT J AU Munsat, T Zweben, SJ AF Munsat, T. Zweben, S. J. TI Derivation of time-dependent two-dimensional velocity field maps for plasma turbulence studies SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID DETERMINING OPTICAL-FLOW; EDGE TURBULENCE; FLUCTUATIONS; TOKAMAK AB Time-resolved two-dimensional (2D) velocity maps have been derived for fluctuation measurements in the edge plasma of the National Spherical Torus Experiment (NSTX). The maps have been derived from time sequences of 2D images recorded with the gas puff imaging diagnostic. A hybrid technique combining optical flow and local pattern matching has been implemented to overcome the individual limitations of each when used with data of limited temporal and/or spatial resolution. Local flow velocities of up to similar to 8 km/s and average poloidal flow velocities of up to similar to 5 km/s are found. Results are compared to previous velocity extraction techniques and NSTX results. (c) 2006 American Institute of Physics. C1 Univ Colorado, Dept Phys, Ctr Integrted Plasma Studies, Boulder, CO 80309 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Munsat, T (reprint author), Univ Colorado, Dept Phys, Ctr Integrted Plasma Studies, Boulder, CO 80309 USA. NR 22 TC 26 Z9 26 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0034-6748 EI 1089-7623 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 103501 DI 10.1063/1.2356851 PG 13 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800011 ER PT J AU Nagayama, T Mancini, RC Welser, LA Louis, S Golovkin, IE Tommasini, R Koch, JA Izumi, N Delettrez, J Marshall, FJ Regan, SP Smalyuk, V Haynes, D Kyrala, G AF Nagayama, T. Mancini, R. C. Welser, L. A. Louis, S. Golovkin, I. E. Tommasini, R. Koch, J. A. Izumi, N. Delettrez, J. Marshall, F. J. Regan, S. P. Smalyuk, V. Haynes, D. Kyrala, G. TI Multiobjective method for fitting pinhole image intensity profiles of implosion cores driven by a Pareto genetic algorithm SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID GRADIENTS; PLASMA AB We discuss a method for the simultaneous and self-consistent fitting of a set of intensity or emissivity spatial profiles from several narrow-band x-ray pinhole images from argon-doped inertial confinement fusion implosion cores, and the space-integrated line spectrum. A Pareto genetic algorithm (PGA) combines the search and optimization capabilities of a single-objective genetic algorithm with the Pareto domination technique of multiobjective optimization. Further, the PGA search is followed up by a fine-tuning step based on a nonlinear least-squares-minimization procedure. The result is a robust search and reconstruction method that finds the optimal core spatial structure subject to multiple constraints. This method is independent of geometry inversions and could take advantage of not only optically thin but also optically thick image data. Results are shown for two combinations of three-objectives based on gated argon He beta and Ly beta image data and the line spectrum. (c) 2006 American Institute of Physics. C1 Univ Nevada, Dept Phys, Reno, NV 89557 USA. Univ Nevada, Dept Comp Sci, Reno, NV 89557 USA. Prism Computat Sci, Madison, WI 53711 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Nagayama, T (reprint author), Univ Nevada, Dept Phys, Reno, NV 89557 USA. RI IZUMI, Nobuhiko/J-8487-2016; Tommasini, Riccardo/A-8214-2009 OI IZUMI, Nobuhiko/0000-0003-1114-597X; Tommasini, Riccardo/0000-0002-1070-3565 NR 8 TC 4 Z9 4 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 2006 VL 77 IS 10 AR 10F525 DI 10.1063/1.2338314 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800255 ER PT J AU Nash, TJ Chandler, GA Bailey, JE Rochau, G Leeper, RJ Nielsen, DS Moore, T AF Nash, T. J. Chandler, G. A. Bailey, J. E. Rochau, G. Leeper, R. J. Nielsen, D. S. Moore, T. TI Time-resolved x-ray pinhole camera with grazing incidence mirror to eliminate bremsstrahlung noise signal on Z SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID POWER AB An on-axis time-resolved x-ray pinhole camera has been used on the 20 MA 100 ns driver Z to image the converging shock wave in dynamic Hohlraum experiments and to image pellet hot spots in inertial confinement fusion implosions. This instrument is susceptible to detecting significant amounts of pinch bremsstrahlung radiation with energies at hundreds of keV and yields of roughly 1 kJ. Quite often the bremsstrahlung noise signals have overwhelmed the desired x-ray images. In an effort to eliminate this large source of noise we have incorporated a 6 degrees gold-coated grazing incidence mirror into the time-resolved x-ray pinhole camera system. The mirror reflects soft x rays at energies under 2 keV but does not reflect bremsstrahlung radiation at hundreds of keV. We will present data from the instrument without the mirror showing large amounts of bremsstrahlung noise contamination and data with the mirror in the system showing greatly reduced noise levels. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Nash, TJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 11 TC 2 Z9 3 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 2006 VL 77 IS 10 AR 10E319 DI 10.1063/1.2336429 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800066 ER PT J AU Negus, CR Giroud, C Meigs, AG Zastrow, KD Hillis, DL AF Negus, C. R. Giroud, C. Meigs, A. G. Zastrow, K. -D. Hillis, D. L. CA JET-EFDA Contributors TI Enhanced core charge exchange recombination spectroscopy system on Joint European Torus SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID SPECTROMETER; JET AB Charge exchange spectroscopy is a key diagnostic on the Joint European Torus for radial profiles of ion temperature, toroidal rotation, and impurity densities. This article describes the current status and the improvements made over the last five years. The current system consists of two periscopes looking at one of the two banks of neutral heating beams, approximate to 90 optical fibers defining viewing directions, and seven spectrometers with charge-coupled device (CCD) cameras. The upgrade has involved replacement of the two periscopes and windows, a doubling of the number of optical fibers (plasma viewing directions), new cameras for the existing spectrometers, improvements to the throughput and long-term stability of the five existing spectrometers, and the addition of two new high-throughput spectrometers with their CCD cameras from ORNL. This work has culminated in improved spatial resolution, increased sensitivity of all the plasma viewing channels (for some by a factor of similar to 3 or more), and enhanced time resolution from 50 to around 10 ms. (c) 2006 American Institute of Physics. C1 UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Negus, CR (reprint author), UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England. EM clive.negus@jet.uk NR 5 TC 20 Z9 20 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 2006 VL 77 IS 10 AR 10F102 DI 10.1063/1.222170 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800168 ER PT J AU Neumayer, P Gregori, G Ravasio, A Koenig, M Price, D Widmann, K Bastea, M Landen, OL Glenzer, SH AF Neumayer, P. Gregori, G. Ravasio, A. Koenig, M. Price, D. Widmann, K. Bastea, M. Landen, O. L. Glenzer, S. H. TI Solid-density plasma characterization with x-ray scattering on the 200 J Janus laser SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB We present collective x-ray scattering (CXS) measurements using a chlorine He-alpha x-ray source pumped with less than 200 J of laser energy. The experimental scattering spectra show plasmon resonances from shocked and radiatively heated samples. These experiments use only 10(12) x-ray photons at the sample of which 10(-5) have been scattered and detected with a highly efficient curved crystal spectrometer. Our results demonstrate that x-ray scattering is a viable technique on smaller laser facilities, making CXS measurements accessible to a broad scientific community. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. Ecole Polytech, LULI, F-91128 Palaiseau, France. RP Neumayer, P (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. RI Koenig, Michel/A-2167-2012 NR 2 TC 2 Z9 2 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 2006 VL 77 IS 10 AR 10F317 DI 10.1063/1.2235648 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800215 ER PT J AU Niles, AM Magee, EW Thorn, DB Brown, GV Chen, H Beiersdorfer, P AF Niles, A. M. Magee, E. W. Thorn, D. B. Brown, G. V. Chen, H. Beiersdorfer, P. TI Laser ablation system for the injection of neutral materials into an electron beam ion trap SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID LINE AB We have designed and implemented a laser ablation system to inject neutral material into the EBIT-I and SuperEBIT high-energy electron beam ion trap at the Lawrence Livermore National Laboratory. A laser-generated vapor created from a solid material target was scrubbed of ions prior to injection into the trap in the form of a collimated beam. We used a Q-switched Nd:YAG laser with a pulse duration of 15.7 ns full width at half maximum and intensities at the target controllable from 0.035 to 0.46 GW/cm(2). Compared with other injection methods, this pulsed system adds new flexibility including the ability to vary fill trap in both time and quantity and without changing trap or beam parameters. Moreover, it allows us to inject materials that are not readily injected by the standard metal vapor vacuum arc (MeVVA) method. Performance comparisons between the laser ablation system and MeVVA method are presented. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Niles, AM (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 12 TC 8 Z9 8 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 2006 VL 77 IS 10 AR 10F106 DI 10.1063/1.2221694 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800172 ER PT J AU Notley, MM Weber, RL Fell, B Jeffries, J Freeman, RR Mackinnon, AJ Dickson, R Hey, D Khattak, F Saiz, EG Gregori, G AF Notley, M. M. Weber, R. L. Fell, B. Jeffries, J. Freeman, R. R. Mackinnon, A. J. Dickson, R. Hey, D. Khattak, F. Saiz, E. Garcia Gregori, G. TI Development of time resolved x-ray spectroscopy in high intensity laser-plasma interactions SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID SOLID DENSITY; GENERATION; PULSES AB This article discusses the design of a novel time resolved von Hamos Bragg spectrometer to provide spectra in the region around the titanium K-alpha and He-alpha lines. The instrument consists of a highly oriented pyrolitic graphite mosaic crystal coupled to a picosecond x-ray streak camera. Measurements of the time dependent behavior from Ti foils illuminated with intense laser pulses can be used to improve the understanding of recombination dynamics, electron transport, and phase transitions in strongly coupled dense plasma. This is important for the modeling of the compression phase in inertial confinement fusion research and the study of astrophysical environments. (c) 2006 American Institute of Physics. C1 Rutherford Appleton Lab, CCLRC, Cent Laser Facil, Didcot OX11 0QX, Oxon, England. Ohio State Univ, Columbus, OH 43210 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Calif Davis, Davis, CA 95616 USA. Queens Univ Belfast, Dept Math & Phys, Belfast BT7 1NN, Antrim, North Ireland. RP Notley, MM (reprint author), Rutherford Appleton Lab, CCLRC, Cent Laser Facil, Didcot OX11 0QX, Oxon, England. RI MacKinnon, Andrew/P-7239-2014; KHATTAK, Fida Younus/L-2404-2015 OI MacKinnon, Andrew/0000-0002-4380-2906; NR 12 TC 4 Z9 4 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10F322 DI 10.1063/1.2222340 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800220 ER PT J AU Oertel, JA Aragonez, R Archuleta, T Barnes, C Casper, L Fatherley, V Heinrichs, T King, R Landers, D Lopez, F Sanchez, P Sandoval, G Schrank, L Walsh, P Bell, P Brown, M Costa, R Holder, J Montelongo, S Pederson, N AF Oertel, John A. Aragonez, Robert Archuleta, Tom Barnes, Cris Casper, Larry Fatherley, Valerie Heinrichs, Todd King, Robert Landers, Doug Lopez, Frank Sanchez, Phillip Sandoval, George Schrank, Lou Walsh, Peter Bell, Perry Brown, Matt Costa, Robert Holder, Joe Montelongo, Sam Pederson, Neal TI Gated x-ray detector for the National Ignition Facility SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID CAMERAS AB Two new gated x-ray imaging cameras have recently been designed, constructed, and delivered to the National Ignition Facility in Livermore, CA. These gated x-Ray detectors are each designed to fit within an aluminum airbox with a large capacity cooling plane and are fitted with an array of environmental housekeeping sensors. These instruments are significantly different from earlier generations of gated x-ray images due, in part, to an innovative impedance matching scheme, advanced phosphor screens, pulsed phosphor circuits, precision assembly fixturing, unique system monitoring, and complete remote computer control. Preliminary characterization has shown repeatable uniformity between imaging strips, improved spatial resolution, and no detectable impedance reflections. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. VI Control Syst Ltd, Los Alamos, NM 87544 USA. RP Oertel, JA (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. OI Barnes, Cris/0000-0002-3347-0741 NR 15 TC 71 Z9 76 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E308 DI 10.1063/1.2227439 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800055 ER PT J AU Olson, RE Bradley, DK Rochau, GA Collins, GW Leeper, RJ Suter, LJ AF Olson, R. E. Bradley, D. K. Rochau, G. A. Collins, G. W. Leeper, R. J. Suter, L. J. TI Time-resolved characterization of Hohlraum radiation temperature via interferometer measurement of quartz shock velocity SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID ABLATOR MATERIALS; OMEGA-LASER; X-RAYS; DRIVE; FACILITY; NOVA AB A new technique for time-resolved measurement of Hohlraum radiation temperature has been successfully tested in Hohlraums with radiation temperatures in the range of 90 - 170 eV. In these experiments, Hohlraum radiation fields produced ablatively driven shock waves in quartz samples. A line-imaging velocity interferometer was used to track the quartz shock velocity as a function of time, and an empirical relationship (determined in these experiments) was used to relate the measured shock velocity to the Hohlraum radiation temperature. The test experiments were performed at the Omega facility [J. M. Soures et al., Phys. Plasmas 3, 2108 (1996)] at the University of Rochester Laboratory for Laser Energetics. The technique should also be useful for Hohlraum temperature measurements at other DOE/NNSA high energy density experimental facilities, such as the Z facility [R.B. Spielman et al., Phys. Plasmas 5, 2105 (1998)] at Sandia National Laboratories and the National Ignition Facility [E.I. Moses, Fusion Sci. Technol. 44, 11 (2003)] at Lawrence Livermore National Laboratory. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Olson, RE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RI Collins, Gilbert/G-1009-2011 NR 22 TC 8 Z9 13 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E523 DI 10.1063/1.2336458 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800097 ER PT J AU Ozaki, T Goncharov, P Sudo, S Seki, T Murakami, S Veschev, E Lyon, J AF Ozaki, T. Goncharov, P. Sudo, S. Seki, T. Murakami, S. Veschev, E. Lyon, J. CA LHD Expt Grp TI Horizontal, vertical, and radial high-energy particle distribution measurement system in Large Helical Device SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB A horizontal, vertical, and radial high-energy particle distribution measurement system, which consists of the time-of-flight neutral particle analyzer (TOF-NPA), the silicon detector neutral particle analyzer (SD-NPA), and pellet charge exchange (PCX) analyzers, is successfully installed in the Large Helical Device (LHD). In a horizontal scan, it is interesting to measure the pitch angle distribution and to investigate the loss cone feature obtained by it. The pitch angle distribution from 40 degrees to 100 degrees can be obtained by horizontal scanning of the TOF-NPA during a long discharge of over 100 s sustained by the NBI2 (coinjection) at the magnetic axis of 3.6 m. With a vertical scan, the heating deposition profile of the ion cyclotron resonance heating (ICH) has been discussed. The deposition profile can be obtained by the vertical scan of the SD-NPA. The region where the high-energy particle is generated agrees with the location of the resonance layer of the ICH. Similar results can be obtained by the PCX measurement, which gives radial information of the high-energy particle distribution in a short discharge. (c) 2006 American Institute of Physics. C1 Natl Inst Fus Sci, Gifu 5095292, Japan. Kyoto Univ, Dept Engn, Kyoto 6068501, Japan. Grad Univ Adv Studies, Kanagawa 2400193, Japan. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Ozaki, T (reprint author), Natl Inst Fus Sci, Gifu 5095292, Japan. RI Goncharov, Pavel/I-4288-2013; Murakami, Sadayoshi/A-2191-2016 OI Goncharov, Pavel/0000-0001-9226-1694; Murakami, Sadayoshi/0000-0002-2526-7137 NR 8 TC 2 Z9 2 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E917 DI 10.1063/1.2229270 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800150 ER PT J AU Paul, SF Marsala, R AF Paul, S. F. Marsala, R. TI Updated design for a low-noise, wideband transimpedance photodiode amplifier SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID DOPPLER SHIFTS; PLASMA; ROTATION AB The high-speed rotation diagnostic developed for Columbia's HBT-EP tokamak requires a high quantum efficiency, very low drift detector/amplifier combination. An updated version of the circuit developed originally for the beam emission spectroscopy experiment on TFTR is being used. A low dark current (2 nA at 15 V bias), low input source capacitance (2 pF) FFD-040 N-type Si photodiode is operated in photoconductive mode. It has a quantum efficiency of 40% at the 468.6 nm (He II line that is being observed). A low-noise field-effect transistor (InterFET IFN152 with e(Na) = 1.2 nV/root Hz) is used to reduce the noise in the transimpedance preamplifier (A250 AMPTEK op-amp) and a very high speed (unity-gain bandwidth= 200 MHz) voltage feedback amplifier (LM7171) is used to restore the frequency response up to 100 kHz. This type of detector/ amplifier is photon-noise limited at this bandwidth for incident light with a power of > similar to 2 nW. The circuit has been optimized using SIMETRIX 4.0 SPICE software and a prototype circuit has been tested successfully. Though photomultipliers and avalanche photodiodes can detect much lower light levels, for light levels > 2 nW and a 10 kHz bandwidth, this detector/ amplifier combination is more sensitive because of the absence of excess (internally generated) noise. (c) 2006 American Institute of Physics. C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA. RP Paul, SF (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. EM spaul@ppl.gov NR 6 TC 0 Z9 0 U1 2 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E528 DI 10.1063/1.2351892 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800102 ER PT J AU Preinhaelter, J Urban, J Pavlo, P Taylor, G Diem, S Vahala, L Vahala, G AF Preinhaelter, Josef Urban, Jakub Pavlo, Pavol Taylor, Gary Diem, Steffi Vahala, Linda Vahala, George TI Electron Bernstein wave simulations and comparison to preliminary NSTX emission data SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID PLASMAS AB Simulations indicate that during flattop current discharges the optimal angles for the aiming of the National Spherical Torus Experiment (NSTX) antennae are quite rugged and basically independent of time. The time development of electron Bernstein wave emission (EBWE) at particular frequencies as well as the frequency spectrum of EBWE as would be seen by the recently installed NSTX antennae are computed. The simulation of EBWE at low frequencies (e.g., 16 GHz) agrees well with the recent preliminary EBWE measurements on NSTX. At high frequencies, the sensitivity of EBWE to magnetic field variations is understood by considering the Doppler broadened electron cyclotron harmonics and the cutoffs and resonances in the plasma. Significant EBWE variations are seen if the magnetic field is increased by as little as 2% at the plasma edge. The simulations for the low frequency antenna are compared to preliminary experimental data published separately by Diem et al. [Rev. Sci. Instrum. 77 (2006)] (c) 2006 American Institute of Physics. C1 EURATOM, IPPCR, Inst Plasma Phys, Prague 18200 8, Czech Republic. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Old Dominion Univ, Norfolk, VA 23529 USA. Coll William & Mary, Williamsburg, VA 23185 USA. RP Preinhaelter, J (reprint author), EURATOM, IPPCR, Inst Plasma Phys, Prague 18200 8, Czech Republic. RI Urban, Jakub/B-5541-2008; Pavlo, Pavol/G-4214-2014; Preinhaelter, Josef/H-1394-2014 OI Urban, Jakub/0000-0002-1796-3597; Pavlo, Pavol/0000-0003-1400-1074; NR 7 TC 7 Z9 7 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10F524 DI 10.1063/1.2336467 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800254 ER PT J AU Reighard, AB Drake, RP Donajkowski, T Grosskopf, M Dannenberg, KK Froula, D Glenzer, S Ross, JS Edwards, J AF Reighard, A. B. Drake, R. P. Donajkowski, T. Grosskopf, M. Dannenberg, K. K. Froula, D. Glenzer, S. Ross, J. S. Edwards, J. TI Thomson scattering from a shock front SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID PLASMAS AB We have obtained a Thomson scattering spectrum in the collective regime by scattering a probe beam from a shock front, in an experiment conducted at the Omega laser at the Laboratory for Laser Energetics. The probe beam was created by frequency converting a beamline at Omega to a 2 ns pulse of 0.263 mu m light, focused with a dedicated optical focusing system. The diagnostic system included collecting optics, spectrometer, and streak camera, with a scattering angle of 101 degrees. The target included a primary shock tube, a 20-mu m-thick beryllium drive disk, 0.3-mu m-thick polyimide windows mounted on a secondary tube, and a gas fill tube. Detected acoustic waves propagated parallel to the target axis. Ten laser beams irradiated the beryllium disk with 0.351 mu m light at 5 x 10(14) W/cm(2) for 1 ns starting at t(0), driving a strong shock through argon gas at rho(0) = 1 mg/cc. The 200 J probe beam fired at t = 19 ns for 2 ns, and at t = 20.1 ns a 0.3 ns signal was detected. We attribute this signal to scattering from the shocked argon, before the density increased above critical due to radiative collapse. (c) 2006 American Institute of Physics. C1 Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Reighard, AB (reprint author), Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA. RI Drake, R Paul/I-9218-2012 OI Drake, R Paul/0000-0002-5450-9844 NR 9 TC 7 Z9 7 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E504 DI 10.1063/1.2220069 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800078 ER PT J AU Rhodes, TL Peebles, WA Nguyen, X VanZeeland, MA Degrassie, JS Doyle, EJ Wang, G Zeng, L AF Rhodes, T. L. Peebles, W. A. Nguyen, X. VanZeeland, M. A. deGrassie, J. S. Doyle, E. J. Wang, G. Zeng, L. TI Millimeter-wave backscatter diagnostic for the study of short scale length plasma fluctuations (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID GRADIENT-DRIVEN TURBULENCE; TORE-SUPRA TOKAMAK; DIII-D; DENSITY-FLUCTUATIONS; COLLECTIVE SCATTERING; TRANSPORT; SYSTEM; REFLECTOMETER AB The development, laboratory tests, and experimental results relating to a new high-k diagnostic technique for the study of short scale length turbulence are reported. The system is based on backscattering of a millimeter-wave (94 GHz) probe beam by density fluctuations within the plasma. This diagnostic has been fully integrated with an upgraded far-infrared forward scattering system on the DIII-D tokamak. The combined system monitors a broad turbulent spectral range from 0 to 40 cm(-1). Short-scale (e. g., electron temperature gradient scale) modes as well as longer wavelength (e. g., ion temperature gradient and trapped electron mode scale) instabilities are simultaneously monitored to accurately characterize plasma turbulence. The backscattering geometry and innovative use of the second harmonic electron cyclotron resonance as an internal "beam dump" allow detection of small level fluctuations at high k, while maximizing discrimination against the ubiquitous, larger level, low-k fluctuations. (c) 2006 American Institute of Physics. C1 Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90024 USA. Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90024 USA. Oak Ridge Inst Sci Educ, Oak Ridge, TN USA. Gen Atom Co, San Diego, CA 92186 USA. RP Rhodes, TL (reprint author), Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90024 USA. NR 26 TC 27 Z9 27 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E922 DI 10.1063/1.2235874 PG 8 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800155 ER PT J AU Rochau, GA Bailey, JE Chandler, GA Nash, TJ Nielsen, DS Dunham, GS Garcia, OF Joseph, NR Keister, JW Madlener, MJ Morgan, DV Moy, KJ Wu, M AF Rochau, G. A. Bailey, J. E. Chandler, G. A. Nash, T. J. Nielsen, D. S. Dunham, G. S. Garcia, O. F. Joseph, N. R. Keister, J. W. Madlener, M. J. Morgan, D. V. Moy, K. J. Wu, M. TI Energy dependent sensitivity of microchannel plate detectors SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID X-RAY; DETECTION EFFICIENCIES; CALIBRATION; RESOLUTION AB Understanding of microchannel plate (MCP) detectors with x-ray energy is important for applications in high energy density research such as broadband imaging and x-ray spectroscopy. The relative sensitivity with photon energy for Cu/ Au coated MCPs in the range of 250 eV < hv < 5000 eV has been measured at the National Synchrotron Light Source. A model of this response that includes contributions from secondary photoelectron yield and interactions with multiple channels is presented. This model is shown to agree with the measured MCP response to < 20% over the majority of the spectral range using cross sections determined from an independent analysis of the MCP glass composition. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Ktech Corp Inc, Albuquerque, NM 87123 USA. Brookhaven Natl Lab, SFA Inc, Upton, NY 11973 USA. Bechtel Nevada, Las Vegas, NV 89193 USA. RP Rochau, GA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 21 TC 20 Z9 25 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E323 DI 10.1063/1.2336461 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800070 ER PT J AU Roquemore, AL Davis, W Kaita, R Skinner, CH Maqueda, R Nishino, N AF Roquemore, A. L. Davis, W. Kaita, R. Skinner, C. H. Maqueda, R. Nishino, N. TI Imaging of high-speed dust particle trajectories on NSTX SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB Imaging of high-speed incandescent dust particle trajectories in a tokamak plasma has been accomplished on NSTX using up to three high-speed cameras each viewing the same plasma volume from different locations and operating at speeds up to 68 000 frames/s with exposure times varying from 2 to 300 mu s. The dynamics of the dust trajectories can be quite complex exhibiting a large variation in both speed (10-200m/s) and direction. Simulations of these trajectories will be utilized to ascertain the role dust may play in future machines such as ITER where significant dust production from wall erosion is expected. NSTX has numerous view ports including both tangential as well as radial views in both the midplane and lower divertors. Several vertical ports are also available so that a few specific regions in NSTX may be viewed simultaneously from several different camera positions. The cameras can be operated in the full visible spectrum but near-infrared filters can be utilized to enhance the observation of incandescent particles against a bright background. A description of the cameras and required optics is presented. (c) 2006 American Institute of Physics. C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Nova Photon Inc, Princeton, NJ 08540 USA. Hiroshima Univ, Hiroshima 7398527, Japan. RP Roquemore, AL (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI Nishino, Nobuhiro/D-6390-2011; OI Davis, William/0000-0003-0666-7247 NR 6 TC 17 Z9 17 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E526 DI 10.1063/1.2347696 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800100 ER PT J AU Ross, JS Froula, DH Mackinnon, AJ Sorce, C Meezan, N Glenzer, SH Armstrong, W Bahr, R Huff, R Thorp, K AF Ross, J. S. Froula, D. H. Mackinnon, A. J. Sorce, C. Meezan, N. Glenzer, S. H. Armstrong, W. Bahr, R. Huff, R. Thorp, K. TI Implementation of imaging Thomson scattering on the Omega Laser SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID ENERGY; PLASMA AB Imaging Thomson scattering has been implemented on the Omega Laser facility at the Laboratory for Laser Energetics, University of Rochester [J. M. Soures et al., Laser and Particle Beams 11, 317 (1993)]. Using a high-resolution spectrometer and an intensified charge-coupled device, the electron temperature profile, ranging from 1.5 to 3 keV, was measured along the axis of a CH gas-filled hohlraum. The system integrates over 200 ps a region 2 mm in length and has a spatial resolution of 50 mu m and a spectral resolution of 0.027 nm. Data obtained from this diagnostic are compared to hydrodynamic simulations. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. RP Ross, JS (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. RI MacKinnon, Andrew/P-7239-2014 OI MacKinnon, Andrew/0000-0002-4380-2906 NR 10 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E520 DI 10.1063/1.2220077 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800094 ER PT J AU Rudakov, DL Boedo, JA Moyer, RA Litnovsky, A Philipps, V Wienhold, P Allen, SL Fenstermacher, ME Groth, M Lasnier, CJ Boivin, RL Brooks, NH Leonard, AW West, WP Wong, CPC McLean, AG Stangeby, PC De Temmerman, G Wampler, WR Watkins, JG AF Rudakov, D. L. Boedo, J. A. Moyer, R. A. Litnovsky, A. Philipps, V. Wienhold, P. Allen, S. L. Fenstermacher, M. E. Groth, M. Lasnier, C. J. Boivin, R. L. Brooks, N. H. Leonard, A. W. West, W. P. Wong, C. P. C. McLean, A. G. Stangeby, P. C. De Temmerman, G. Wampler, W. R. Watkins, J. G. TI First tests of molybdenum mirrors for ITER diagnostics in DIII-D divertor SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID HYDROCARBON FORMATION; PLASMA; DESIGN; CARBON AB Metallic mirrors will be used in ITER for optical diagnostics working in different spectral ranges. Their optical properties will change with time due to erosion, deposition, and particle implantation. First tests of molybdenum mirrors were performed in the DIII-D divertor under deposition-dominated conditions. Two sets of mirrors recessed 2 cm below the divertor floor in the private flux region were exposed to a series of identical, lower-single-null, ELMing (featuring edge localized modes) H-mode discharges with detached plasma conditions in both divertor legs. The first set of mirrors was exposed at ambient temperature, while the second set was preheated to temperatures between 140 and 80 S C. During the exposures mirrors in both sets were additionally heated by radiation from the plasma. The nonheated mirrors exhibited net carbon deposition at a rate of up to 3.7 nm/s and suffered a significant drop in reflectivity. Net carbon deposition rate on the preheated mirrors was a factor of 30 - 100 lower and their optical reflectivity in the wave range above 500 nm was essentially preserved. (c) 2006 American Institute of Physics. C1 Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA. Forschungszentrum Julich, Assoc EURATOM FZJ, Inst Plasmaphys, D-52425 Julich, Germany. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Gen Atom Co, San Diego, CA 92186 USA. Univ Toronto, Inst Aerosp Studies, Toronto, ON M3H 5T6, Canada. Univ Basel, Inst Phys, CH-4056 Basel, Switzerland. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Rudakov, DL (reprint author), Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA. RI Groth, Mathias/G-2227-2013 NR 12 TC 17 Z9 17 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 2006 VL 77 IS 10 AR 10F126 DI 10.1063/1.2336465 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800192 ER PT J AU Ruden, EL Zhang, SY Wurden, GA Intrator, TP Renneke, R Waganaar, WJ Analla, FT Grabowski, TC AF Ruden, E. L. Zhang, Shouyin Wurden, G. A. Intrator, T. P. Renneke, R. Waganaar, W. J. Analla, F. T. Grabowski, T. C. TI Multichord optical interferometry of FRX-L's field reversed configuration SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID MAGNETIZED TARGET FUSION; ROTATIONAL INSTABILITIES; PLASMA AB A 0.633 mu m laser interferometer provides detailed time resolved information about the spatial distribution of the plasma density of field reversed configurations (FRC's) produced by the FRX-L experiment at Los Alamos National Laboratory. This experiment is an effort to produce a magnetized plasma with closed field lines suitable for compression by a solid metal liner imploded by the Shiva Star capacitor bank at the Air Force Research Laboratory. The interferometer probes a fanned array of eight chords through the FRC midplane, measuring the line integrated free electron density via its effect on optical phase shift relative to eight reference beams as a function of time. The reference beams are given nominally identical optical paths, except that they are folded for compactness and given an 80 MHz higher optical frequency by use of a Bragg cell beam splitter. After the beams are recombined, interference results in 80 MHz electromagnetic beat waves with dynamic phase shifts equal to those of the corresponding optical probes. Quadrature mixing of the electronically monitored light is then performed with rf components. Noteworthy features of the interferometer's design are the unique compact folding scheme of the reference paths, inclusion of a fused quartz tube in the reference path similar to that of the FRC's vacuum vessel to compensate for cylindrical lensing, and transmission of the interfering light via optical fibers to a rf shielded room for processing. Extraneous contributions to the phase shift due to vibration resulting from the system's pulsed magnetic field, and dynamic refractive changes in or near the fused quartz tube wall (possibly due to radiation heating) are corrected for. (c) 2006 American Institute of Physics. C1 USAF, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Sci Applicat Int Corp, Albuquerque, NM 87106 USA. RP Ruden, EL (reprint author), USAF, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA. EM edward.ruden@kirtland.af.mil RI Wurden, Glen/A-1921-2017 OI Wurden, Glen/0000-0003-2991-1484 NR 15 TC 8 Z9 8 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 103502 DI 10.1063/1.2354568 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800012 ER PT J AU Schneider, MB Holder, JP James, DL Bruns, HC Celeste, JR Compton, S Costa, RL Ellis, AD Emig, JA Hargrove, D Kalantar, DH MacGowan, BJ Power, GD Sorce, C Rekow, V Widmann, K Young, BK Young, PE Garcia, OF McKenney, J Haugh, M Goldin, F MacNeil, LP Cone, K AF Schneider, M. B. Holder, J. P. James, D. L. Bruns, H. C. Celeste, J. R. Compton, S. Costa, R. L. Ellis, A. D. Emig, J. A. Hargrove, D. Kalantar, D. H. MacGowan, B. J. Power, G. D. Sorce, C. Rekow, V. Widmann, K. Young, B. K. Young, P. E. Garcia, O. F. McKenney, J. Haugh, M. Goldin, F. MacNeil, L. P. Cone, K. TI Time-resolved soft x-ray imaging diagnostic for use at the NIF and OMEGA lasers SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID FUSION EXPERIMENTS; CAMERA AB The soft x-ray imager (SXRI) built for the first experiments at the National Ignition Facility (NIF) has four soft x-ray channels and one hard x-ray channel. The SXRI is a snout that mounts to a four strip gated imager. This produces four soft x-ray images per strip, which can be separated in time by similar to 60 ps. Each soft x-ray channel consists of a mirror plus a filter. The diagnostic was used to study x-ray burnthrough of hot Hohlraum targets at the NIF and OMEGA lasers. The SXRI snout design and issues involved in selecting the desired soft x-ray channels are discussed. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Bechtel Nevada, Livermore, CA 94550 USA. Univ Calif Davis, Davis, CA 95616 USA. RP Schneider, MB (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM schneider5@llnl.gov NR 14 TC 4 Z9 4 U1 1 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E321 DI 10.1063/1.2349748 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800068 ER PT J AU Shinohara, K Isobe, M Darrow, DS AF Shinohara, K. Isobe, M. Darrow, D. S. TI Escaping ion measurement with high time resolution on CHS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID COMPACT HELICAL SYSTEM; HELIOTRON/TORSATRON; JT-60U AB A scintillator-based lost ion probe can measure the temporal evolution of both the gyroradius and the pitch angle of energetic ions escaping a magnetically confined plasma. For the probe on the Compact Helical System, the time resolution of this detailed two-dimensional measurement is determined by a framing rate of the video camera that records the luminous images produced by the ions striking the scintillator plate. The framing rate of the old camera was 30 Hz, thus the time resolution was about 33 ms. Our interest is to understand the energetic ion transport in fast events such as a bursting energetic ion driven mode. The typical time scale of these events is less than 1 ms, meaning that the old camera was too slow. By replacing it with an image-intensified high-speed video camera system, the temporal resolution was improved from 33 to 0.07 ms. We have successfully installed the fast camera and captured some fast events caused by magnetohydrodynamics, which were unobservable using the original camera. (c) 2006 American Institute of Physics. C1 Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan. Natl Inst Fus Sci, Gifu 5095292, Japan. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Shinohara, K (reprint author), Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan. NR 10 TC 3 Z9 4 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E521 DI 10.1063/2229194 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800095 ER PT J AU Si, JH Wang, ZH AF Si, Jiahe Wang, Zhehui TI A nine-electrode probe for simultaneous measurement of all terms in the ideal radial Ohm's law SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID PLASMA AB A Nine-Electrode Probe (NEP) has been developed for simultaneous measurement of all terms in the ideal Ohm's law E+ U X B = 0 in the radial (r) direction in cylindrical geometry, where E is the electric field, U is the plasma flow velocity, and B is the magnetic field. The probe consists of two pairs of directional Langmuir probes (" Mach" probes) to measure the axial (z) and azimuthal (theta) plasma flows, two pairs of floating Langmuir probes at different radial positions to measure the radial electric field, and two B-dot coils to measure the axial and azimuthal magnetic field. The measurement is performed in the Flowing Magnetized Plasma (FMP) experiment. Two flow patterns are identified in the FMP experiment by the NEP. The peak-to-peak values of radial electric field fluctuation is 1.5-4 times of the mean values. Comparisons of U X B vertical bar(r) and E-r show that E-r + U X B vertical bar(r) is not zero within some periods of discharge. This deviation suggests non-ideal effects in Ohm's law can not be neglected. (c) 2006 American Institute of Physics. C1 Rensselaer Polytech Inst, Troy, NY 12180 USA. RP Si, JH (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM sij@lanl.gov NR 6 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E311 DI 10.1063/1.2219414 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800058 ER PT J AU Sinars, DB Wenger, DF Keller, KL Rochau, GA Porter, JL AF Sinars, D. B. Wenger, D. F. Keller, K. L. Rochau, G. A. Porter, J. L. TI Focusing, adjustable spectrometer with temporal resolution for the Sandia Z facility SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID ENERGY DENSITY PHYSICS; SPATIAL-RESOLUTION; Z-PINCHES; SPECTRA; ICF AB Spherically bent focusing spectrometers with one- or two-dimensional spatial resolution (FSSR) are commonly used to obtain spectra with lambda/Delta lambda > 1000 from laser and exploding-wire plasmas. The focal properties of such spectrometers make them ideally suited for coupling with x-ray streak cameras when imaging small sources. We discuss the design of a streaked FSSR system intended to measure time-resolved emission spectra with time resolutions < 100 ps and lambda/Delta lambda > 2000 for source sizes similar to 1 mm. The narrow spectral range (similar to 0.04 nm) can be adjusted between tests by varying the central Bragg angle (35 degrees-55 degrees) range and/or by exchanging the crystal type. The high spectral resolution is ideal for detailed line shape measurements. An example configuration for studying Hand He- like Ar emission is presented. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Sinars, DB (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 16 TC 5 Z9 6 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10F327 DI 10.1063/1.2336727 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800225 ER PT J AU Sinars, DB Bennett, GR Herrmann, MC Smith, IC Speas, CS Ruggles, LE Porter, JL AF Sinars, D. B. Bennett, G. R. Herrmann, M. C. Smith, I. C. Speas, C. S. Ruggles, L. E. Porter, J. L. TI Enhancement of x-ray yield from the Z-Beamlet laser for monochromatic backlighting by using a prepulse SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID PLASMAS; PHYSICS; DRIVEN; IMPLOSIONS; EMISSION; FACILITY; SYSTEM AB The Z-Beamlet Laser (ZBL) is capable of providing on-target energies of up to 1.5 kJ at 527 nm in up to four separate 0.3-1.5 ns pulses during a 20 ns window. ZBL is routinely used as a source of x rays for backlighting experiments on the Sandia Z facility, a 20 MA, 100 ns rise-time, pulsed-power driver for z-pinch plasma radiation sources. Most backlighting experiments use monochromatic crystal imaging diagnostics at 1865 or 6151 eV. We present calibration data demonstrating that the use of a 0.3-0.6 ns, similar to 200 J pulse, followed 2 ns later by a 1.0 ns, similar to 1 kJ pulse results in more than twice the x-ray yield at 6151 eV (a He-like Mn emission line) compared to a single 1.0 ns, similar to 1 kJ pulse. The first pulse creates a plasma (and few x rays) that expands and approaches the critical density for the laser when the second pulse arrives, creating a more efficient coupling of laser light to the plasma. A similar improvement was also noted for He-like Ni emission lines, suggesting that this simple technique scales to higher photon energies. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Sinars, DB (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM dbsinar@sandia.gov NR 21 TC 7 Z9 7 U1 1 U2 9 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E309 DI 10.1063/1.2228515 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800056 ER PT J AU Sorce, C Schein, J Weber, F Widmann, K Campbell, K Dewald, E Turner, R Landen, O Jacoby, K Torres, P Pellinen, D AF Sorce, C. Schein, J. Weber, F. Widmann, K. Campbell, K. Dewald, E. Turner, R. Landen, O. Jacoby, K. Torres, P. Pellinen, D. TI Soft x-ray power diagnostic improvements at the Omega Laser Facility SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID DIAMOND PHOTOCONDUCTIVE DETECTORS; NATIONAL-IGNITION-FACILITY; PLASMAS; FUSION AB Soft x-ray power diagnostics are essential for evaluating high temperature laser plasma experiments. The Dante soft x-ray spectrometer, a core diagnostic for radiation flux and temperature measurements of Hohlraums, installed on the Omega Laser Facility at the Laboratory for Laser Energetics has recently undergone a series of upgrades. Work performed at Brookhaven National Laboratory for the development of the National Ignition Facility (NIF) Dante spectrometer enables the Omega Dante to offer a total of 18 absolutely calibrated channels in the energy range from 50 eV to 20 keV. This feature provides Dante with the capability to measure higher, NIF relevant, radiation temperatures with increased accuracy including a differentiation of higher energy radiation such as the Au M and L bands. Diagnostic monitoring using experimental data from directly driven Au spherical shots is discussed. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Bechtel Nevada Livermore Operat, Livermore, CA 94550 USA. RP Sorce, C (reprint author), Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94550 USA. EM sorce1@llnl.gov NR 13 TC 42 Z9 47 U1 1 U2 8 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E518 DI 10.1063/1.2336462 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800092 ER PT J AU Soukhanovskii, VA Johnson, DW Kaita, R Roquemore, AL AF Soukhanovskii, V. A. Johnson, D. W. Kaita, R. Roquemore, A. L. TI Electron density measurements in the National Spherical Torus Experiment detached divertor region using Stark broadening of deuterium infrared Paschen emission lines SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID ALCATOR C-MOD; VOLUME RECOMBINATION; PLASMAS; DIAGNOSTICS AB Spatially resolved measurements of deuterium Balmer and Paschen line emission have been performed in the divertor region of the National Spherical Torus Experiment using a commercial 0.5 m Czerny-Turner spectrometer. While the Balmer emission lines, as well as the Balmer and Paschen continua in the ultraviolet and visible regions have been extensively used for tokamak divertor plasma temperature and density measurements, the diagnostic potential of infrared Paschen lines has been largely overlooked. We analyze Stark broadening of the lines corresponding to 2 - n and 3-m transitions with principal quantum numbers n=7-12 and m=10-12 using recent model microfield method calculations [C. Stehle and R. Hutcheon, Astron. Astrophys., Suppl. Ser. 140, 93 (1999)]. Densities in the range (5-50) x 10(19) m(-3) are obtained in the recombining inner divertor plasma in 2 - 6 MW neutral beam heated H-mode discharges. The measured Paschen line profiles show good sensitivity to Stark effects and low sensitivity to instrumental and Doppler broadenings. The lines are situated in the near-infrared wavelength domain, where optical signal extraction schemes for harsh nuclear environments are practically realizable and where a recombining divertor plasma is optically thin. These properties make them an attractive recombining divertor density diagnostic for a burning plasma experiment. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Soukhanovskii, VA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 19 TC 14 Z9 14 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10F127 DI 10.1063/1.2336456 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800193 ER PT J AU Spaleta, J Zakharov, L Kaita, R Majeski, R Gray, T AF Spaleta, J. Zakharov, L. Kaita, R. Majeski, R. Gray, T. TI Magnetic probe response function calibrations for plasma equilibrium reconstructions of CDX-U SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB A novel response function calibration technique has been developed to account for time-dependent nonaxisymmetric eddy currents near magnetic sensors in toroidal magnetic confinement devices. The response function technique provides a means to cross calibrate against all available external field coil systems to calculate the absolute sensitivity of each magnetic field sensor, even when induced eddy currents are present in the vacuum vessel wall. The response function information derived in the calibration process can be used in equilibrium reconstructions to separate plasma signals from signals due to externally produced eddy currents at magnetic field sensor locations, without invoking localized wall current distribution details. The response function technique was used for the first ever equilibrium reconstructions of spherical torus plasmas, when applied to the Current Drive Experiment-Upgrade (CDX-U) device. In conjunction with the equilibrium and stability code (ESC), equilibria were obtained for recent CDX-U experiments with lithium plasma-facing components. A description of the CDX-U magnetic sensor configuration and the response function calibration technique will be presented along with examples of resulting plasma equilibrium for CDX-U lithium wall operations. (c) 2006 American Institute of Physics. C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Spaleta, J (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. NR 4 TC 6 Z9 6 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E305 DI 10.1063/1.2221917 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800052 ER PT J AU Stoeckl, C Glebov, VY Jaanimagi, PA Knauer, JP Meyerhofer, DD Sangster, TC Storm, M Sublett, S Theobald, W Key, MH MacKinnon, AJ Patel, P Neely, D Norreys, PA AF Stoeckl, C. Glebov, V. Yu. Jaanimagi, P. A. Knauer, J. P. Meyerhofer, D. D. Sangster, T. C. Storm, M. Sublett, S. Theobald, W. Key, M. H. MacKinnon, A. J. Patel, P. Neely, D. Norreys, P. A. TI Operation of target diagnostics in a petawatt laser environment (invited) SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID ION-BEAMS; IRRADIATION; DETECTORS; ELECTRON; DIAMOND; PHOTON AB The operation of target diagnostics in a high-energy petawatt laser environment is made challenging by the large number of energetic electrons, hard x rays, and energetic particles produced in laser-target interactions. The charged particles and x rays from the target create secondary radiation and a large electromagnetic pulse (EMP) when they hit structures inside the target chamber. The primary particles create secondary particles and radiation that can create excessive background in sensitive detectors. The large EMP can impair or damage electronic equipment and detectors, especially inside the target chamber. Shielding and EMP mitigation strategies developed during experiments at the Rutherford Appleton Vulcan petawatt laser facility will be presented for a variety of detection systems, such as single-photon-counting x-ray charge-coupled device cameras, multiple diamond x-ray detectors, and scintillator-photomultiplier detectors. These strategies will be applied to the development of diagnostic systems for the OMEGA EP, high-energy petawatt laser facility, currently under construction at the Laboratory for Laser Energetics. (c) 2006 American Institute of Physics. C1 Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. RP Stoeckl, C (reprint author), Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA. EM csto@lle.rochester.edu RI Patel, Pravesh/E-1400-2011; MacKinnon, Andrew/P-7239-2014 OI MacKinnon, Andrew/0000-0002-4380-2906 NR 17 TC 13 Z9 13 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10F506 DI 10.1063/1.2217922 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800236 ER PT J AU Stratton, B Brooks, A Brown, T Johnson, D Labik, G Lazarus, E Pomphrey, N Raftopoulos, S Zarnstorff, M AF Stratton, B. Brooks, A. Brown, T. Johnson, D. Labik, G. Lazarus, E. Pomphrey, N. Raftopoulos, S. Zarnstorff, M. TI External magnetic diagnostics for the National Compact Stellarator Experiment SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB The National Compact Stellarator Experiment will have a complete set of magnetic diagnostics to constrain equilibrium reconstructions and for plasma control. The flux loops lying on the exterior surface of the vacuum vessel and the flux loops cowound with the field coils must be installed during machine construction because they will later be inaccessible. Designs and installation techniques for these diagnostics are described. (c) 2006 American Institute of Physics. C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Stratton, B (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI pomphrey, neil/G-4405-2010 NR 8 TC 1 Z9 1 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 2006 VL 77 IS 10 AR 10E314 DI 10.1063/1.2229227 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800061 ER PT J AU Sweezy, JE Wilson, DC Bradley, PA Grim, GP Choi, CK Coggeshall, JC Wilde, CH Forster, RA Russell, RD AF Sweezy, J. E. Wilson, D. C. Bradley, P. A. Grim, G. P. Choi, C. K. Coggeshall, J. C. Wilde, C. H. Forster, R. A. Russell, R. D. TI Neutron source images and spectra to guide neutron diagnostics specifications for the National Ignition Facility SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID LASER; CAPSULES; TARGETS; DESIGN AB Both neutron images and spectra will diagnose ignition implosions at the National Ignition Facility. From the integrated Hohlraum and capsule calculations of copper-doped beryllium capsules using similar to 1 MJ of laser energy we have postprocessed neutron spectra and both energy-gated and time integrated neutron images displaying the observable consequences of two-dimensional Hohlraum asymmetries. If low signal precludes multiple down scattered images, we suggest a 6-12 MeV gate. With asymmetries, it is noted that the neutron yield, spectra, and images vary with observation direction. The yield varies only several percent when observed at different angles. Since most asymmetries are expected about the Hohlraum axis, a perpendicular view has the highest priority. The next most informative view would be along the Hohlraum axis, but may be precluded by target chamber structures. We present images at the available port angles and discuss their utility. To facilitate detailed diagnostic simulations with real pinhole geometries or penumbral apertures, we offer a compact disk containing neutron spectra and gated images from various integrated calculations. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Wilson, DC (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM dcw@lanl.gov OI Bradley, Paul/0000-0001-6229-6677 NR 12 TC 2 Z9 2 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E722 DI 10.1063/1.2351885 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800125 ER PT J AU Ticos, CM Wang, ZH Dorf, LA Wurden, GA AF Ticos, Catalin M. Wang, Zhehui Dorf, Leonid A. Wurden, Glen A. TI Plasmadynamic hypervelocity dust injector for the national spherical torus experiment SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID BEAM INJECTION; FIELD; ACCELERATOR AB The design and construction of a plasmadynamic device to accelerate dust to hypervelocities is presented. High speed dust will be used to measure magnetic field lines in the National Spherical Torus Experiment. The plasma gun produces a high density (n(e) approximate to 10(18) cm(-3)) and low temperature (a few eV) deuterium plasma, ejected by J x B forces which provide drag on the dust particles in its path. The dust will be entrained by the plasma to velocities of 1 -30 km/s, depending on the dust mass. Carbon dust particles will be used, with diameters from 1 to 50 mu m. The key components of the plasmadynamic accelerator are a coaxial plasma gun operated at 10 kV (with an estimated discharge current of 200 kA), a dust dispenser activated by a piezoelectric transducer, and power and remote-control systems. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Plasma Phys Grp P 24, Magnetized Fus Energy Team, Los Alamos, NM 87545 USA. RP Ticos, CM (reprint author), Los Alamos Natl Lab, Plasma Phys Grp P 24, Magnetized Fus Energy Team, Los Alamos, NM 87545 USA. EM cticos@lanl.gov RI Ticos, Catalin/F-1677-2011; Wurden, Glen/A-1921-2017 OI Wurden, Glen/0000-0003-2991-1484 NR 14 TC 18 Z9 18 U1 1 U2 9 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E304 DI 10.1063/1.2219384 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800051 ER PT J AU Tommasini, R Koch, JA Izumi, N Welser, LA Mancini, RC Delettrez, J Regan, S Smalyuk, V AF Tommasini, Riccardo Koch, Jeffrey A. Izumi, Nobuhiko Welser, Leslie A. Mancini, Roberto C. Delettrez, Jacques Regan, Sean Smalyuk, Vladimir TI Multispectral X-ray imaging for core temperature and density maps retrieval in direct drive implosions SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID PINHOLE-ARRAY; OMEGA AB We report on the experiments aimed at obtaining core temperature and density maps in direct drive implosions at the Omega laser facility using multimonochromatic x-ray imagers. These instruments use an array of pinholes and a flat multilayer mirror to provide unique multispectral images distributed over a wide spectral range. Using argon as a dopant in the direct-drive filled plastic shells produces emission images in the Ar He-beta and Ly-beta spectral regions. These images allow the retrieval of temperature and density maps of the plasma. We deployed three identical multimonochromatic x-ray imagers in a quasiorthogonal line-of-sight configuration to allow tomographic reconstruction of the structure of the imploding core. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Nevada, Dept Phys, Reno, NV 89557 USA. Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. RP Tommasini, R (reprint author), Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94550 USA. EM tommasini2@llnl.gov RI IZUMI, Nobuhiko/J-8487-2016; Tommasini, Riccardo/A-8214-2009 OI IZUMI, Nobuhiko/0000-0003-1114-597X; Tommasini, Riccardo/0000-0002-1070-3565 NR 7 TC 12 Z9 12 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E303 DI 10.1063/1.2218856 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800050 ER PT J AU Tommasini, R Koch, JA Young, B Ng, E Phillips, T Dauffy, L AF Tommasini, Riccardo Koch, Jeffrey A. Young, Bruce Ng, Ed Phillips, Tom Dauffy, Lucile TI High energy X-ray imager for inertial confinement fusion at the National Ignition Facility SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB X-ray imaging is a fundamental diagnostic tool for inertial confinement fusion (ICF) research and provides data on the size and the shape of the core in implosions. We report on the feasibility and performance analyses of an ignition x-ray imager to be used on cryogenic deuterium-tritium implosions at the National Ignition Facility. The system is intended to provide time-integrated, broadband, moderate-energy x-ray core images of imploding inertial confinement fusion capsules. It is optimized with respect to spatial-resolution, signal-to-background, and signal-to-noise ratios, taking into account the extreme operating conditions expected at NIF due to high expected neutrons yields, gamma rays, and x rays from laser-plasma interactions. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Tommasini, R (reprint author), Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94550 USA. EM tommasini2@llnl.gov RI Tommasini, Riccardo/A-8214-2009 OI Tommasini, Riccardo/0000-0002-1070-3565 NR 6 TC 4 Z9 5 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E301 DI 10.1063/1.2216996 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800048 ER PT J AU Tong, T Majumdar, A AF Tong, Tao Majumdar, Arun TI Reexamining the 3-omega technique for thin film thermal characterization SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID CONDUCTIVITY; CONDUCTANCE AB The 3-omega method is widely used to measure thermal properties of thin films and interfaces. Generally, one-dimensional heat conduction across the film is assumed and the film capacitance is neglected. The change in the in-phase (real part) temperature response for the film-on-substrate case relative to the substrate-only case is, therefore, attributed to the sum of the bulk thermal resistance of the film and the thermal boundary resistance between the film and the substrate. Based on a rigorous and intuitive mathematical derivation, it is shown that this approach represents a limiting case, and that its use can cause significant errors in rather realistic situations when the underlying assumptions are not met. This article quantifies the error by introducing a new parameter called the ratio function R, which modifies the film thermal resistance and mathematically shows that it depends only on three dimensionless parameters that combine thermal properties and geometries of the film and the heated linewidth. A new data reduction scheme is suggested accordingly to determine the film thermal conductivity (cross-plane), anisotropic thermal conductivity ratio between the in-plane direction and the cross-plane direction, and the interface thermal conductance. (c) 2006 American Institute of Physics. C1 Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Majumdar, A (reprint author), Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. EM majumdar@me.berkeley.edu NR 15 TC 52 Z9 54 U1 5 U2 34 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 EI 1089-7623 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 104902 DI 10.1063/1.2349601 PG 9 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800033 ER PT J AU Veshchev, EA Goncharov, PR Ozaki, T Sudo, S Lyon, JF AF Veshchev, E. A. Goncharov, P. R. Ozaki, T. Sudo, S. Lyon, J. F. CA LHD Exp Group TI Chord integrated neutral particle diagnostic data analysis for neutral beam injection and ion cyclotron radio frequency heated plasma in a complex Large Helical Device geometry SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB Energy and angle-resolved measurements of charge exchange neutral particle fluxes from the plasma provide information about T-i, as well as non-Maxwellian substantially anisotropic ion distribution tails due to neutral beam injection (NBI) and ion cyclotron radio frequency (ICRF) heating. The measured chord integral neutral flux calculation scheme for the Large Helical Device magnetic surface geometry is given. Calculation results are shown for measurable atomic energy spectra corresponding to heating-induced fast ion distributions from simplified Fokker-Planck models. The behavior of calculated and experimental suprathermal particle distributions from NBI and ICRF heated plasma is discussed in the context of the experimental data interpretation. (c) 2006 American Institute of Physics. C1 Grad Univ Adv Studies, Kanagawa 2400193, Japan. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Veshchev, EA (reprint author), Grad Univ Adv Studies, Kanagawa 2400193, Japan. RI Goncharov, Pavel/I-4288-2013 OI Goncharov, Pavel/0000-0001-9226-1694 NR 13 TC 2 Z9 2 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 2006 VL 77 IS 10 AR 10F116 DI 10.1063/1.2229279 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800182 ER PT J AU Walsh, PJ Oertel, J Lanier, NE Archuleta, TN Chelli, SJ Lvovsky, M AF Walsh, P. J. Oertel, J. Lanier, N. E. Archuleta, T. N. Chelli, S. J. Lvovsky, Marina TI Optimization of gated x-ray intensifier screens SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID ITO THIN-FILMS; PHYSICAL-PROPERTIES; FRAMING CAMERAS AB Gated x-ray intensifiers are primary imaging diagnostics in high energy density physics and inertial confinement fusion experiments. We describe recent work in optimization of the phosphor screens used in these intensifiers. One avenue for improvement in resolution, contrast, and brightness is improved phosphor screens. Efforts have been directed at improving luminosity, resolution, and contrast with an aluminized thin (< 0.7 mu g/cm(2)) phosphor layer, a higher transmission indium tin oxide (ITO) electrode, and higher density screens. Thinner phosphors, coupled with thinner aluminum overcoats (< 500 A), should give equivalent or higher luminosities than traditional thick (< 0.7 mu g/cm(2)) settled coatings in the electron energy range between 3 and 5 kV, typical microchannel plate to screen accelerating voltages for this class of instrument. Higher resolution is achieved by coupling increased extraction voltage (ph/e-) with less interparticle photon diffusion and increased photon capture (aluminum overcoat). The contribution of the aluminum overcoat to capturing backscattered screen photons is examined. Improved transmission of an ITO electrode used in the cataphoretic deposition technique is demonstrated. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM USA. Deposit Res Lab Inc, St Charles, MO 63301 USA. Lexel Imaging Syst Inc, Lexington, KY 40511 USA. RP Walsh, PJ (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM USA. NR 12 TC 1 Z9 1 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E313 DI 10.1063/1.2235066 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800060 ER PT J AU Wang, ZH Luo, SN Barnes, CW Briggs, ME Paisley, DL Paul, SF AF Wang, Zhehui Luo, Sheng-Nian Barnes, Cris W. Briggs, Matthew E. Paisley, Dennis L. Paul, Stephen F. TI Correlated-intensity velocimeter for arbitrary reflector for laser-produced plasma experiments SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID DOPPLER SHIFTS; INTERFEROMETER AB A laser-based technique, called correlated-intensity velocimeter for arbitrary reflector (CIVAR), is described for velocity measurement of reflecting surfaces in real time. Velocity versus time is an important measurement in laser-produced high-energy density plasma experiments because the motion of the surface depends on both the equation of the state of the surface material and laser-produced plasma. The physics and working principle of CIVAR are the same as those of a previous concept that resolves Doppler shift of plasma light emission using a pair of narrow passband interference filters. One unique feature of CIVAR is that a reflected laser beam is used instead of plasma emission. Therefore, CIVAR is applicable to both emitting and nonemitting reflecting surfaces. Other advantages of CIVAR include its simplicity, lower cost, and unambiguous data analysis that can be fully automated. The design of a single-point CIVAR is described in detail with emphasis on laser wavelength selection and signal-to-noise ratio. The single-point CIVAR system can be expanded into a multiple-point system straightforwardly. It is possible to use CIVAR concept to construct a two-dimensional imaging system for a nonuniform velocity field of a large reflecting surface; such a velocity imaging system may have applications beyond laser-produced plasma experiments, for example, in shock compression of condensed matter. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Princeton Univ, Plasma Phys Lab, Princeton, NJ 08544 USA. RP Wang, ZH (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Luo, Sheng-Nian /D-2257-2010; OI Luo, Sheng-Nian /0000-0002-7538-0541; Barnes, Cris/0000-0002-3347-0741 NR 13 TC 1 Z9 2 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 0034-6748 EI 1089-7623 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E516 DI 10.1063/1.2336787 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800090 ER PT J AU Welser, LA Mancini, RC Nagayama, T Tommasini, R Koch, JA Izumi, N Delettrez, JA Marshall, FJ Regan, SP Smalyuk, VA Golovkin, IE Haynes, DA Kyrala, G AF Welser, L. A. Mancini, R. C. Nagayama, T. Tommasini, R. Koch, J. A. Izumi, N. Delettrez, J. A. Marshall, F. J. Regan, S. P. Smalyuk, V. A. Golovkin, I. E. Haynes, D. A. Kyrala, G. TI Spatial structure analysis of direct-drive implosion cores at OMEGA using x-ray narrow-band core images SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID SPECTROSCOPY; GRADIENTS; PLASMAS; SHELL AB The spectroscopic analysis of x-ray narrow-band images and space-integrated x-ray line spectra from argon-doped deuterium-filled inertial confinement fusion implosion experiments yields information about the spatial profiles in the compressed core. We discuss the analysis of direct-drive implosion experiments at OMEGA, in which images were obtained with a multimonochromatic imaging instrument. The analysis method considers data based on the argon He beta and Ly beta spectral features and their associated Li-and He-like satellites. The temperature gradient structure is investigated by using the sensitivity of the Ly beta/He beta emissivity ratio to the temperature. (c) 2006 American Institute of Physics. C1 Univ Nevada, Dept Phys, Reno, NV 89557 USA. Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. Prism Computat Sci, Madison, WI 53711 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Welser, LA (reprint author), Univ Nevada, Dept Phys, Reno, NV 89557 USA. RI IZUMI, Nobuhiko/J-8487-2016; Tommasini, Riccardo/A-8214-2009 OI IZUMI, Nobuhiko/0000-0003-1114-597X; Tommasini, Riccardo/0000-0002-1070-3565 NR 11 TC 4 Z9 5 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E320 DI 10.1063/1.2229196 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800067 ER PT J AU Wenger, DF Sinars, DB Rochau, GA Bailey, JE Porter, JL Faenov, AY Pikuz, TA Pikuz, SA AF Wenger, D. F. Sinars, D. B. Rochau, G. A. Bailey, J. E. Porter, J. L. Faenov, A. Ya. Pikuz, T. A. Pikuz, S. A. TI Focusing, in-chamber spectrometer triplet for high resolution measurements on the Sandia Z facility SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID PHYSICS AB An early prototype of a focusing spectrometer with one-dimensional (1D) spatial resolution (FSSR) instrument was previously developed for use in the vacuum chamber of the Sandia Z facility [Sinars et al., J. Quant. Spectrosc. Radiat. Transf. 99, 595 (2006)]. This instrument used a single, spherically bent crystal to measure time-integrated Ar spectra from 0.295-0.378 nm with lambda/Delta lambda > 2000 and a 1D axial spatial resolution of similar to 50 mu m. We present the design of a final version of this instrument that improves the shielding, can be aligned more accurately, and uses three crystals instead of one. The last change enables coverage of multiple spectral ranges if different crystals are used, or multiple times if identical crystals and time-gated detectors are used. We also present results from initial prototyping tests on the Z facility using two crystals in a time-integrated mode. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. MISDC VNIFTRII, Mendeleyevsk 141570, Moscow Region, Russia. Cornell Univ, Plasma Studies Lab, Ithaca, NY 14853 USA. RP Wenger, DF (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RI Pikuz, Sergey/M-8231-2015 NR 10 TC 6 Z9 12 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10F312 DI 10.1063/1.2222086 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800210 ER PT J AU Wilgen, JB Ryan, PM Hanson, GR Swain, DW Bernabei, SI Greenough, N DePasquale, S Phillips, CK Hosea, JC Wilson, JR AF Wilgen, J. B. Ryan, P. M. Hanson, G. R. Swain, D. W. Bernabei, S. I. Greenough, N. DePasquale, S. Phillips, C. K. Hosea, J. C. Wilson, J. R. TI Reflectometer sensing of rf waves in front of the high harmonic fast wave antenna on NSTX SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA ID SPHERICAL-TORUS-EXPERIMENT; HHFW AB The ability to measure rf driven waves in the edge of the plasma can help to elucidate the role that surface waves and parametric decay instabilities (PDIs) play in rf power losses on NSTX. A microwave reflectometer has recently been modified to monitor rf plasma waves in the scrape-off layer in front of the 30 MHz high harmonic fast wave antenna array on NSTX. In rf heated plasmas, the plasma-reflected microwave signal exhibits 30 MHz sidebands, due primarily to the modulation of the cutoff layer by the electrostatic component of the heating wave. Similarly, electrostatic parametric decay waves (when present) are detected at frequencies below the heating frequency, near 28, 26,...MHz, separated from the heating frequency by harmonics of the local ion cyclotron frequency of about 2 MHz. In addition, a corresponding frequency matched set of decay waves is also detected near the ion cyclotron harmonics at 2, 4,...MHz. The rf plasma-wave sensing capability is useful for determination of the PDI power threshold as a function of antenna array phasing (including toroidal wavelength), outer gap spacing, and various plasma parameters such as the magnetic field and the plasma current. (c) 2006 American Institute of Physics. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Wilgen, JB (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 8 TC 14 Z9 14 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 2006 VL 77 IS 10 AR 10E933 DI 10.1063/1.2336441 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800166 ER PT J AU Wilson, DC Singleton, RL Grondalski, JP Hoffman, NM Nobile, A Seguin, FH Frenje, JA Li, CK Petrasso, RD AF Wilson, D. C. Singleton, R. L., Jr. Grondalski, J. P. Hoffman, N. M. Nobile, A., Jr. Seguin, F. H. Frenje, J. A. Li, C. K. Petrasso, R. D. TI Diagnosing ablator burn through in ignition capsules using D-2+ He-3 gas filled surrogates SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 16th Topical Conference on High-Temperature Plasma Diagnostics CY MAY 07-11, 2006 CL Williamsburg, VA AB If x-radiation penetrates the ablator of an ignition capsule too deeply or too little, ignition can fail. Typically an ablator areal density of similar to 0.2 g/cm(2) remains at ignition time. 20% more or less flux in the final pulse of radiation driving the capsule can change that areal density by similar to 0.1 g/cm2 and halve the capsule yield. We propose a technique to measure ablator areal density in a surrogate capsule that would complement Cu activation [D. C. Wilson et al., Phys. Plasmas 5, 1953 (1998)]. Replace the DT ice layer by deuterium and He-3 gas. Diagnose the number and spectra of D-He-3 protons escaping the surrogate capsule with wedge range filters. For a 0.02 g/cm(3) gas fill and the optimal radiation drive, 1.2e+11 protons escape with energies above 3 MeV and a peak at 5 MeV. If ignition would fail due to ablator burn through, 1.7e+11 protons would escape but the peak moves to 11 MeV. If ignition would fail from too much ablator remaining, 3.2e+9 protons escape the surrogate and the peak moves near 3 MeV. The D+D neutron yield remains roughly constant over this range. Wedge range filters would be able to diagnose these proton yields and peaks above similar to 4 MeV with a resolution of similar to 0.3 MeV. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. MIT, Cambridge, MA 02139 USA. RP Wilson, DC (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. NR 10 TC 5 Z9 5 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 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD OCT PY 2006 VL 77 IS 10 AR 10E711 DI 10.1063/1.2229268 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 101EU UT WOS:000241722800114 ER PT J AU Ahn, CH Bhattacharya, A Di Ventra, M Eckstein, JN Frisbie, CD Gershenson, ME Goldman, AM Inoue, IH Mannhart, J Millis, AJ Morpurgo, AF Natelson, D Triscone, JM AF Ahn, C. H. Bhattacharya, A. Di Ventra, M. Eckstein, J. N. Frisbie, C. Daniel Gershenson, M. E. Goldman, A. M. Inoue, I. H. Mannhart, J. Millis, Andrew J. Morpurgo, Alberto F. Natelson, Douglas Triscone, Jean-Marc TI Electrostatic modification of novel materials SO REVIEWS OF MODERN PHYSICS LA English DT Review ID FIELD-EFFECT TRANSISTORS; SINGLE-MOLECULE TRANSISTORS; METAL-INSULATOR-TRANSITION; NEGATIVE DIFFERENTIAL RESISTANCE; CURRENT-VOLTAGE CHARACTERISTICS; MIXED-VALENT MANGANITES; THIN-FILM TRANSISTORS; TUNNELING SPECTROSCOPY; CHARGE-TRANSPORT; GATE INSULATOR AB Application of the field-effect transistor principle to novel materials to achieve electrostatic doping is a relatively new research area. It may provide the opportunity to bring about modifications of the electronic and magnetic properties of materials through controlled and reversible changes of the carrier concentration without modifying the level of disorder, as occurs when chemical composition is altered. As well as providing a basis for new devices, electrostatic doping can in principle serve as a tool for studying quantum critical behavior, by permitting the ground state of a system to be tuned in a controlled fashion. In this paper progress in electrostatic doping of a number of materials systems is reviewed. These include structures containing complex oxides, such as cuprate superconductors and colossal magnetoresistive compounds, organic semiconductors, in the form of both single crystals and thin films, inorganic layered compounds, single molecules, and magnetic semiconductors. Recent progress in the field is discussed, including enabling experiments and technologies, open scientific issues and challenges, and future research opportunities. For many of the materials considered, some of the results can be anticipated by combining knowledge of macroscopic or bulk properties and the understanding of the field-effect configuration developed during the course of the evolution of conventional microelectronics. However, because electrostatic doping is an interfacial phenomenon, which is largely an unexplored field, real progress will depend on the development of a better understanding of lattice distortion and charge transfer at interfaces in these systems. C1 Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. Univ Illinois, Dept Phys, Urbana, IL 61801 USA. Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA. Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. AIST, Correlated Elect Res Ctr, Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan. Univ Augsburg, Ctr Elect Correlat & Magnetism, Inst Phys, D-86135 Augsburg, Germany. Columbia Univ, Dept Phys, New York, NY 10027 USA. Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands. Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA. Ecole Phys, Dept Phys Mat Condensee, CH-1211 Geneva, Switzerland. RP Ahn, CH (reprint author), Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA. RI Di Ventra, Massimiliano/E-1667-2011; Frisbie, C Daniel/F-3995-2011; Bhattacharya, Anand/G-1645-2011; Inoue, Isao/B-7976-2008; OI Di Ventra, Massimiliano/0000-0001-9416-189X; Bhattacharya, Anand/0000-0002-6839-6860; Inoue, Isao/0000-0002-6785-652X; Mannhart, Jochen/0000-0001-6331-2640 NR 210 TC 302 Z9 303 U1 25 U2 195 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0034-6861 EI 1539-0756 J9 REV MOD PHYS JI Rev. Mod. Phys. PD OCT-DEC PY 2006 VL 78 IS 4 BP 1185 EP 1212 DI 10.1103/RevModPhys.78.1185 PG 28 WC Physics, Multidisciplinary SC Physics GA 112PM UT WOS:000242538800004 ER PT J AU Arntzen, EV Geist, DR Dresel, PE AF Arntzen, Evan V. Geist, David R. Dresel, P. Evan TI Effects of fluctuating river flow on groundwater/surface water mixing in the hyporheic zone of a regulated, large cobble bed river SO RIVER RESEARCH AND APPLICATIONS LA English DT Article DE hysteresis; hyporheic; groundwater/surface water interaction; hydraulic gradient; specific discharge; spawning gravels; permeability; hydraulic conductivity ID HYDRAULIC CONDUCTIVITY; SLUG-TEST; DISCHARGE; STREAM; PERSPECTIVES; EXCHANGE; DYNAMICS AB Physicochemical relationships in the boundary zone between groundwater and surface water (i.e. the hyporheic zone) are controlled by surface water hydrology and the hydrogeologic properties of the riverbed. We studied how sediment permeability and river discharge altered the vertical hydraulic gradient (VHG) and water quality of the hyporheic zone within the Hanford Reach of the Columbia River. The Columbia River at Hanford is a large, cobble-bed river where water level fluctuates up to 2m daily because of hydropower generation. Concomitant with river stage recordings, continuous readings were made of water temperature, specific conductance, dissolved oxygen and water level of the hyporheic zone. The water level data were used to calculate VHG between the river and hyporheic zone. Sediment permeability was estimated using slug tests conducted in piezometers installed into the river bed. The response of water quality measurements and VHG to surface water fluctuations varied widely among study sites, ranging from no apparent response to covariance with river discharge. At some sites, a hysteretic relationship between river discharge and VHG was indicated by a time lag in the response of VHG to changes in river stage. The magnitude, rate of change and hysteresis of the VHG response varied the most at the least permeable location (hydraulic conductivity (K) = 2.9 x 10(-4) cms(-1)) and the least at the most permeable location (K = 8.8 x 10(-3) cms(-1)). Our study provides empirical evidence that sediment properties and river discharge both control the water quality of the hyporheic zone. Regulated rivers, like the Columbia River at Hanford, that undergo large, frequent discharge fluctuations represent an ideal environment in which to study hydrogeologic processes over relatively short time periods (i.e. days to weeks) that would require much longer periods (i.e. months to years) to evaluate in unregulated systems. Copyright (c) 2006 John Wiley & Sons Ltd. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. RP Arntzen, EV (reprint author), Pacific NW Natl Lab, POB 999,MS K6-85, Richland, WA 99354 USA. EM evan.arntzen@pnl.gov NR 35 TC 59 Z9 63 U1 3 U2 46 PU JOHN WILEY & SONS LTD PI CHICHESTER PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND SN 1535-1459 J9 RIVER RES APPL JI River Res. Appl. PD OCT PY 2006 VL 22 IS 8 BP 937 EP 946 DI 10.1002/rra.947 PG 10 WC Environmental Sciences; Water Resources SC Environmental Sciences & Ecology; Water Resources GA 105ED UT WOS:000242011300007 ER PT J AU Lin, YJ McHugh, KM Zhou, YZ Lavernia, EJ AF Lin, Yaojun McHugh, Kevin M. Zhou, Yizhang Lavernia, Enrique J. TI Microstructure and hardness of spray-formed chromium-containing steel tooling SO SCRIPTA MATERIALIA LA English DT Article DE spray-formed tooling; H13 tool steel; process development ID EVOLUTION AB The microstructure and hardness of a spray-formed chromium-containing tool steel H13 were studied. There is very little porosity in both as-spray-formed samples and spray-formed samples following heat treatment. The microstructure in the as-spray-formed material is characterized by proeutectoid carbides, lower bainite, martensite, and retained austenite. Spray-formed H13 aged at a given temperature exhibits higher hardness than commercial H13 conventionally heat treated and tempered at the same temperature. The microstructures and hardness are rationalized on the basis of numerical analysis. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA. Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. Idaho Natl Engn Lab, Ind Technol Dept, Idaho Falls, ID 83415 USA. RP Lin, YJ (reprint author), Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA. EM yjlin@neo.tamu.edu RI Lavernia, Enrique/I-6472-2013 OI Lavernia, Enrique/0000-0003-2124-8964 NR 16 TC 11 Z9 18 U1 1 U2 10 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 2006 VL 55 IS 7 BP 581 EP 584 DI 10.1016/j.scriptamat.2006.06.020 PG 4 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 076TU UT WOS:000239981500002 ER PT J AU Gao, YF Lucas, BN Hay, JC Oliver, WC Pharr, GM AF Gao, Y. F. Lucas, B. N. Hay, J. C. Oliver, W. C. Pharr, G. M. TI Nanoscale incipient asperity sliding and interface micro-slip assessed by the measurement of tangential contact stiffness SO SCRIPTA MATERIALIA LA English DT Article DE nanoindentation; micromechanical model; interface micro-slip ID WEIERSTRASS PROFILE; ELASTIC-MODULUS; FRICTION; SURFACE; INDENTATION; NUCLEATION; ADHESION; HARDNESS AB Experiments with a multidimensional nano-contact system have shown that, prior to kinetic frictional sliding, there is a significant reduction of the tangential contact stiffness relative to the elastic prediction. The reduction occurs at contact sizes below about 50-200 nm for aluminum single crystals and several other materials. Using a cohesive interface model, we find that this reduction corresponds to a transition from a small-scale-slip to large-scale-slip condition of the interface. (c) 2006 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 Math & Comp Sci, Oak Ridge, TN 37831 USA. Fast Forward Devices LLC, Knoxville, TN 37931 USA. MTS Syst Corp, Nano Instruments Innovat Ctr, Oak Ridge, TN 37830 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Gao, YF (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. EM ygao7@utk.edu RI Gao, Yanfei/F-9034-2010 OI Gao, Yanfei/0000-0003-2082-857X NR 17 TC 19 Z9 19 U1 1 U2 7 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 2006 VL 55 IS 7 BP 653 EP 656 DI 10.1016/j.scriptamat.2006.05.006 PG 4 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 076TU UT WOS:000239981500020 ER PT J AU Nieh, TG Zhang, M Zinkle, SJ McGreevy, TE Hoelzer, DT Speakman, SA AF Nieh, T. G. Zhang, M. Zinkle, S. J. McGreevy, T. E. Hoelzer, D. T. Speakman, S. A. TI Effect of texture on the high temperature mechanical properties of Nb-1%Zr alloy SO SCRIPTA MATERIALIA LA English DT Article DE refractory metal; high temperature deformation; texture; dislocation mechanisms ID ELEVATED-TEMPERATURE; CREEP-BEHAVIOR; ANISOTROPY AB High temperature deformation properties of Nb-1%Zr alloy were evaluated with a special emphasis on the texture effect. Fully recrystallized Nb-1%Zr samples with different crystallographic textures were prepared by annealing 80% cold-rolled foil at 1500 degrees C for 2 h. Subsequent tensile tests at 1100 degrees C showed that the sample oriented in the rolling direction is about 20% stronger than that oriented 30 degrees to the rolling direction. (c) 2006 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, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. RP Nieh, TG (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. EM tnieh@utk.edu RI Nieh, Tai-Gang/G-5912-2011; Hoelzer, David/L-1558-2016; OI Nieh, Tai-Gang/0000-0002-2814-3746; Zinkle, Steven/0000-0003-2890-6915 NR 18 TC 8 Z9 8 U1 0 U2 7 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 2006 VL 55 IS 8 BP 719 EP 722 DI 10.1016/j.scriptamat.2006.06.025 PG 4 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 079OD UT WOS:000240185600015 ER PT J AU Wang, J Liu, GD Lin, YH AF Wang, Jun Liu, Guodong Lin, Yuehe TI Electroactive silica nanopartictes for biological Labeling SO SMALL LA English DT Article DE biolabeling; biosensors; nanoparticles; proteins; silica ID TIN OXIDE ELECTRODES; ULTRASENSITIVE DETECTION; VOLTAMMETRIC DETECTION; GOLD NANOPARTICLES; DNA DETECTION; OXIDATION; GUANINE; PROBES; ARRAY; HYBRIDIZATION C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Lin, YH (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. EM yuehe.lin@pni.gov RI Lin, Yuehe/D-9762-2011 OI Lin, Yuehe/0000-0003-3791-7587 NR 41 TC 38 Z9 40 U1 0 U2 3 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1613-6810 J9 SMALL JI Small PD OCT PY 2006 VL 2 IS 10 BP 1134 EP 1138 DI 10.1002/smll.200600189 PG 7 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 082EX UT WOS:000240370600004 PM 17193577 ER PT J AU Liu, GD Wu, H Wang, J Lin, YH AF Liu, Guodong Wu, Hong Wang, Jun Lin, Yuehe TI apoferritin-ternplated synthesis of metal phosphate nanoparticle labels for electrochemical immunoassay SO SMALL LA English DT Article DE apoferritin; electrochemical methods; immunoassays; nanoparticles; proteins ID TUMOR-NECROSIS-FACTOR; DNA HYBRIDIZATION; PROTEIN CAGE; FERRITIN; TAGS C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Lin, YH (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. EM yuehe.lin@pnl.gov RI Lin, Yuehe/D-9762-2011 OI Lin, Yuehe/0000-0003-3791-7587 NR 37 TC 58 Z9 62 U1 1 U2 17 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1613-6810 J9 SMALL JI Small PD OCT PY 2006 VL 2 IS 10 BP 1139 EP 1143 DI 10.1002/smll.200600206 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 082EX UT WOS:000240370600005 PM 17193578 ER PT J AU Dani, KM Kavousanaki, EG Tignon, J Chemla, DS Perakis, IE AF Dani, K. M. Kavousanaki, E. G. Tignon, J. Chemla, D. S. Perakis, I. E. TI Nonlinear optical studies of the transient coherence in the Quantum Hall system SO SOLID STATE COMMUNICATIONS LA English DT Article; Proceedings Paper CT Workshop on Emergent Phenomena in Quantum Hall Systems CY JUL 15-20, 2005 CL Taos, NM DE nanostructures; quantum wells; Quantum Hall effect; optical properties ID 2-DIMENSIONAL ELECTRON-GAS; LANDAU-LEVEL EXCITATIONS; MANY-BODY; SEMICONDUCTORS; DYNAMICS; REGIME; STATES; SPECTROSCOPY; HIERARCHY; DENSITY AB We review recent investigations of the femtosecond nonlinear optical response of the two-dimensional electron gas (2DEG) in a strong magnetic field. We probe the Quantum Hall (QH) regime for filling factors nu similar to 1. Our focus is on the transient coherence induced via optical excitation and on its time evolution during early fermosecond timescales. We simultaneously study the interband and intraband coherence in this system by using a nonlinear spectroscopic technique, transient three-pulse four wave mixing optical spectroscopy, and a many-body theory. We observe striking differences in the temporal and spectral profile of the nonlinear optical signal between a modulation doped quantum well system (with the 2DEG) and a similar undoped quantum well (without a 2DEG). We attribute these qualitative differences to Coulomb correlations between the photoexcited electron-hole pairs and the 2DEG. We show, in particular, that intraband many-particle coherences assisted by the inter-Landau-level magnetoplasmon excitations of the 2DEG dominate the fermosecond nonlinear optical response. The most striking effect of these exciton-magnetoplasmon coherences is a large off-resonant four-wave-mixing signal in the case of very low photoexcited carrier densities, not observed in the undoped system, with strong temporal oscillations and unusually symmetric temporal profile. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Crete, Dept Phys, Iraklion, Crete, Greece. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Fdn Res & Technol Hellas, Inst Elect Struct & Laser, Iraklion, Crete, Greece. Ecole Normale Super, Lab Pierre Aigrain, F-75005 Paris, France. RP Perakis, IE (reprint author), Univ Crete, Dept Phys, Iraklion, Crete, Greece. EM ilias@physics.uoc.gr RI Perakis, Ilias/G-9186-2011; Kavousanaki, Eleftheria/D-5712-2015; Dani, Keshav/B-7490-2015 OI Kavousanaki, Eleftheria/0000-0003-1805-6638; Dani, Keshav/0000-0003-3917-6305 NR 50 TC 6 Z9 6 U1 0 U2 4 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 2006 VL 140 IS 2 SI SI BP 72 EP 82 DI 10.1016/j.ssc.2006.05.051 PG 11 WC Physics, Condensed Matter SC Physics GA 094KK UT WOS:000241238100005 ER PT J AU Pan, W Xia, JS Stormer, HL Tsui, DC Vicente, CL Adams, ED Sullivan, NS Pfeiffer, LN Baldwin, KW West, KW AF Pan, W. Xia, J. S. Stormer, H. L. Tsui, D. C. Vicente, C. L. Adams, E. D. Sullivan, N. S. Pfeiffer, L. N. Baldwin, K. W. West, K. W. TI Low temperature electronic transports in the presence of a density gradient SO SOLID STATE COMMUNICATIONS LA English DT Article; Proceedings Paper CT Workshop on Emergent Phenomena in Quantum Hall Systems CY JUL 15-20, 2005 CL Taos, NM DE quantum Hall effect; resistivity rule; linear magnetoresistance; density gradient ID STRONG MAGNETIC-FIELD; QUANTUM HALL SYSTEMS; EDGE-STATE TRANSPORT; LANDAU-LEVEL; GAS; REGIME; MAGNETORESISTANCE; DELOCALIZATION; BACKSCATTERING; TRANSITION AB In this paper, we review low temperature electronic transport results in high quality two-dimensional electron systems. We discuss the quantization of the diagonal resistance, R-xx, at the edges of several quantum Hall states. Each quantized R-xx value turns out to be close to the difference between the two adjacent Hall plateaus in the off-diagonal resistance, R-xy. Moreover, peaks in R-xx occur at different positions in positive and negative magnetic fields. All three R-xx features can be explained quantitatively by a similar to 1% cm electron density gradient. Furthermore, based on this observation, the well known but still enigmatic resistivity rule, relating R-xx to dR(xv)/dB, finds a simple interpretation in terms of this gradient. In another sample, at 1.2 K, R-xx we observe a strongly linear magnetic field dependence. Surprisingly, this linear magnetoresistance also originates from the density gradient. Our findings throw an unexpected light on the relationship between the experimentally measured R-xx and the diagonal resistivity rho(xx). (c) 2006 Elsevier Ltd. All rights reserved. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ Florida, Gainesville, FL 32611 USA. Columbia Univ, New York, NY 10027 USA. Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA. Princeton Univ, Princeton, NJ 08544 USA. RP Pan, W (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM wpan@sandia.gov NR 34 TC 0 Z9 0 U1 0 U2 5 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 2006 VL 140 IS 2 SI SI BP 88 EP 93 DI 10.1016/j.ssc.2006.05.048 PG 6 WC Physics, Condensed Matter SC Physics GA 094KK UT WOS:000241238100007 ER PT J AU Huang, XS Mickelson, W Regan, BC Kim, S Zettl, A AF Huang, Xiaosheng Mickelson, W. Regan, B. C. Kim, Steve Zettl, A. TI Pressure dependence of T-c and H-c2 of a dirty two-gap superconductor, carbon-doped MgB2 SO SOLID STATE COMMUNICATIONS LA English DT Article DE MgB2; upper critical field; high pressure ID ENHANCEMENT; PHASES; ORIGIN; FIELD; HC2; SI AB We have measured T-C and H-C2(T) of carbon-doped MgB2 under hydrostatic pressures up to 15.6 kbar. dT(C)/dP is determined to be -0.20 K/kbar and H-C2(T = 0) decreases with pressure at a rate that is consistent with the theoretical value for pure MgB2, dH(C2)/dP = -0.036 T/kbar. By analyzing our results within the theoretical framework of a dirty two-gap supersonductor, we determine values for the interband coupling and the ratio between the diffusivities associated with the two bands at three different pressures. We also extract the diffusivities and coherence lengths associated with each band. Finally, we estimate the pressure dependence of the charge carrier concentration in the a band to be d In n/dP = -0.013/kbar. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Huang, XS (reprint author), Univ Calif Berkeley, Dept Phys, 366 LeConte Hall 7300, Berkeley, CA 94720 USA. EM xshuangca@yaboo.com 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 26 TC 5 Z9 5 U1 0 U2 1 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 2006 VL 140 IS 3-4 BP 163 EP 166 DI 10.1016/j.ssc.2006.08.005 PG 4 WC Physics, Condensed Matter SC Physics GA 099IK UT WOS:000241586700013 ER PT J AU Wee, SH Goyal, A Martin, PM Li, J Paranthaman, M Heatherly, L AF Wee, S. H. Goyal, A. Martin, P. M. Li, J. Paranthaman, M. Heatherly, L. TI Strong flux-pinning in epitaxial NdBa2Cu3O7-delta films with columnar defects comprised of self-assembled nanodots of BaZrO3 SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID CRITICAL-CURRENT DENSITY; THIN-FILMS; FIELD-DEPENDENCE; CRYSTALS AB Epitaxial NdBa2Cu3O7-delta (NdBCO) films with and without the incorporation of self-assembled nanodots of BaZrO3 (BZO) were grown on rolling-assisted-biaxially-textured substrates (RABiTS) by pulsed laser deposition. Compared to epitaxial YBa2Cu3O7-delta (YBCO) films on RABiTS, NdBCO films are found to have superior performance in applied fields at all field orientations, suggesting the presence of an increased density of pinning centres. The incorporation of columns of self-assembled nanodots of BZO within the NdBCO films results in further enhancement of the in-field J(c) at all field orientations. J(c) varies as J(c) similar to H-alpha at intermediate fields, with a values for NdBCO and BZO-doped NdBCO films being similar to 0.37 and similar to 0.43, respectively, which are significantly lower than alpha similar to 0.52 for YBCO film. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Wee, SH (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM wees@ornl.gov RI Paranthaman, Mariappan/N-3866-2015 OI Paranthaman, Mariappan/0000-0003-3009-8531 NR 14 TC 19 Z9 20 U1 0 U2 0 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 2006 VL 19 IS 10 BP L42 EP L45 DI 10.1088/0953-2048/19/10L02 PG 4 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 093GP UT WOS:000241156600002 ER PT J AU Godeke, A ten Haken, B ten Kate, HHJ Larbalestier, DC AF Godeke, A. ten Haken, B. ten Kate, H. H. J. Larbalestier, D. C. TI A general scaling relation for the critical current density in Nb3Sn SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Review ID UPPER CRITICAL-FIELD; HIGH MAGNETIC-FIELDS; TEMPERATURE T-C; SUPERCONDUCTING TRANSITION-TEMPERATURE; STRONG-COUPLED SUPERCONDUCTORS; PINNING FORCE DENSITY; STRAIN DEPENDENCE; PURITY DEPENDENCE; MULTIFILAMENTARY WIRES; II SUPERCONDUCTORS AB We review the scaling relations for the critical current density (J(c)) in Nb3Sn wires and include recent findings on the variation of the upper critical field (H-c2) with temperature (T) and A15 composition. Measurements of H-c2(T) in inevitably inhomogeneous wires, as well as analysis of literature results, have shown that all available H-c2(T) data can be accurately described by a single relation from the microscopic theory. This relation also holds for inhomogeneity averaged, effective, H-c2(*)(T) results and can be approximated by H-c2(t)/H-c2(0) congruent to 1 - t(1.52), with t = T/T-c. Knowing H-c2(*)(T) implies that J(c)(T) is also known. We highlight deficiencies in the Summers/Ekin relations, which are not able to account for the correct J(c)(T) dependence. Available J(c)(H) results indicate that the magnetic field dependence for all wires from mu H-0 congruent to 1 T up to about 80% of the maximum H-c2 can be described with Kramer's flux shear model, if nonlinearities in Kramer plots when approaching the maximum H-c2 are attributed to A15 inhomogeneities. The strain (epsilon) dependence is introduced through a temperature and strain dependent H-c2*(T, epsilon) and Ginzburg-Landau (GL) parameter kappa(1)(T, epsilon) and a strain dependent critical temperature T-c(epsilon). This is more consistent than the usual Ekin unification of strain and temperature dependence, which uses two separate and different dependences on H-c2(*)(T) and H-c2(*)(epsilon). Using a correct temperature dependence and accounting for the A15 inhomogeneities leads to the remarkably simple relation J(c)(H, T, epsilon) congruent to (C/mu H-0)s(epsilon)(1 - t(1.52)) (1 - t(2))h(0.5)(1 - h)(2), where C is a constant, s(epsilon) represents the normalized strain dependence of H-c2*(0) and h = H/ H-c2*(T, epsilon). Finally, a new relation for s(epsilon) is proposed, which is an asymmetric version of our earlier deviatoric strain model and based on the first, second and third strain invariants. The new scaling relation solves a number of much debated issues with respect to J(c) scaling in Nb3Sn and is therefore of importance to the applied community, who use scaling relations to analyse magnet performance from wire results. C1 Univ Wisconsin, Ctr Appl Superconduct, Madison, WI 53706 USA. Univ Twente, Fac Sci & Technol, Low Temp Div, NL-7500 AE Enschede, Netherlands. RP Godeke, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM agodeke@lbl.gov RI Larbalestier, David/B-2277-2008 OI Larbalestier, David/0000-0001-7098-7208 NR 110 TC 99 Z9 101 U1 4 U2 29 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 2006 VL 19 IS 10 BP R100 EP R116 DI 10.1088/0953-2048/19/10/R02 PG 17 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 093GP UT WOS:000241156600004 ER PT J AU Kang, HS Pang, SS Kim, JW Kim, GH Kim, JH Lee, SY Li, Y Wang, H Jia, QX AF Kang, Hong Seong Pang, Seong Sik Kim, Jae Won Kim, Gun Hee Kim, Jong Hoon Lee, Sang Yeol Li, Y. Wang, H. Jia, Q. X. TI The role of a ZnO buffer layer in the growth of ZnO thin film on Al2O3 substrate SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article; Proceedings Paper CT Symposium on Material Science and Technology of Wide Bandgap Semiconductors held at the 2006 Spring Meeting of the EMRS CY MAY 29-JUN 02, 2006 CL Nice, FRANCE SP European Mat Res Soc DE ZnO buffer layer; TEM; PLD ID GAN; HETEROEPITAXY; MBE AB A ZnO buffer layer and ZnO thin film have been deposited by the pulsed laser deposition technique at the temperatures of 200 degrees C and 400 degrees C, respectively. Structural, electrical and optical properties of ZnO thin films grown on sapphire (Al2O3) substrate with 1, 5, and 9 nm thick ZnO buffer layers were investigated. A minute shift of the (101) peak was observed which indicates that the lattice parameter was changed by varying the thickness of the buffer layer. High resolution transmission electron microscopy (TEM) was used to investigate the thickness of the ZnO buffer layer and the interface involving a thin ZnO buffer between the film and substrate. Selected area electron diffraction (SAED) patterns show high quality hexagonal ZnO thin film with 30 degrees in-plane rotation with respect to the sapphire substrate. The use of the buffer can reduce the lattice mismatch between the ZnO thin film and sapphire substrate; therefore, the lattice constant of ZnO thin film grown on sapphire substrate became similar to that of bulk ZnO with increasing thickness of the buffer layer. (c) 2006 Published by Elsevier Ltd. C1 Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea. Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Lee, SY (reprint author), Yonsei Univ, Dept Elect & Elect Engn, 134,Shinchon Dong, Seoul 120749, South Korea. EM sylee@yonsei.ac.kr RI Jia, Q. X./C-5194-2008; Wang, Haiyan/P-3550-2014 OI Wang, Haiyan/0000-0002-7397-1209 NR 12 TC 15 Z9 16 U1 0 U2 14 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PD OCT-DEC PY 2006 VL 40 IS 4-6 BP 501 EP 506 DI 10.1016/j.spmi.2006.09.031 PG 6 WC Physics, Condensed Matter SC Physics GA 122EJ UT WOS:000243208200050 ER PT J AU Mun, BS Watanabe, M Rossi, M Stamenkovic, V Markovic, NM Ross, PN AF Mun, B. S. Watanabe, M. Rossi, M. Stamenkovic, V. Markovic, N. M. Ross, P. N., Jr. TI The study of surface segregation, structure, and valence band density of states of Pt3Ni(100), (110), and (111) crystals SO SURFACE REVIEW AND LETTERS LA English DT Article DE Pt3Ni; surface segregation; UPS; LEED; LEIS ID ENERGY ELECTRON-DIFFRACTION; SCANNING-TUNNELING-MICROSCOPY; INCIDENCE DEPENDENT EXCITATION; SANDWICH SEGREGATION; ALLOY SURFACES; PT-NI; COMPOSITION PROFILE; AUGER-SPECTROSCOPY; OXYGEN REDUCTION; RECONSTRUCTIONS AB The surface segregation, structure, and valence band density of states of Pt3Ni(100), (110), and (111) single crystals are characterized with low energy ion scattering (LEIS), low energy electron diffraction (LEED), and ultraviolet photoemission spectroscopy (UPS). The results of LEIS clearly reveal the complete surface segregation of Pt to the top layer on all crystal alloys. LEED indicates the (5 x 1) surface reconstruction on the Pt3Ni(100), while (110) and (111) surfaces show (2 x 1) and (1 x 1) patterns, respectively, identical to Pt single crystals. The valence bands density of states on Pt3Ni alloys are compared to those of Pt single crystals via UPS measurements. 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. RIKEN SPring 8, Sayo, Hyogo 6795148, Japan. RP Mun, BS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Mun, Bongjin /G-1701-2013 NR 31 TC 7 Z9 7 U1 1 U2 36 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0218-625X J9 SURF REV LETT JI Surf. Rev. Lett. PD OCT PY 2006 VL 13 IS 5 BP 697 EP 702 DI 10.1142/S0218625X06008682 PG 6 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 152NA UT WOS:000245367500021 ER PT J AU Alfonso, DR AF Alfonso, Dominic R. TI Initial incorporation of sulfur into the Pd(111) surface: A theoretical study SO SURFACE SCIENCE LA English DT Article DE chemisorption; density functional theory calculations; sulfur; metallic surfaces; adatoms; low index single crystal surfaces ID GENERALIZED GRADIENT APPROXIMATION; ULTRASOFT PSEUDOPOTENTIALS; ADSORBATE STRUCTURE; TRANSITION; ENERGY; CHEMISORPTION; EXCHANGE AB Density functional theory is used to investigate the initial inclusion of sulfur into the subsurface interstitial sites of Pd(111) surface. Pure subsurface adsorption is found to be less energetically favorable than on-surface adsorption. The incorporation of sulfur into the metal becomes more favorable than continuous adsorption on the surface after a critical on-surface sulfur coverage. We find subsurface sulfur occupation to be energetically favorable after adsorption of more than half a monolayer on the surface. Occupation of subsurface sites induces a pronounced structural distortion of the Pd(111) surface. We find significant expansion of interplanar spacing between the uppermost surface metal layers and rearrangement of the S overlayer. The interplay between the energy cost due to structural distortion of Pd(111) and the energy gain due to bond formation for different structures is discussed. (c) 2006 Elsevier B.V. All rights reserved. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. Parsona Project Serv Inc, South Pk, PA 15129 USA. RP Alfonso, DR (reprint author), US DOE, Natl Energy Technol Lab, 626 Cochrans Mills Rd, Pittsburgh, PA 15236 USA. EM alfonso@netl.doe.gov NR 34 TC 12 Z9 12 U1 0 U2 2 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 2006 VL 600 IS 19 BP 4508 EP 4516 DI 10.1016/j.susc.2006.07.032 PG 9 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 097YT UT WOS:000241486900019 ER PT J AU Chambers, SA AF Chambers, Scott A. TI Ferromagnetism in doped thin-film oxide and nitride semiconductors and dielectrics SO SURFACE SCIENCE REPORTS LA English DT Review DE spintronics; ferromagnetic semiconductors; magnetic oxides ID MOLECULAR-BEAM EPITAXY; ROOM-TEMPERATURE FERROMAGNETISM; P-TYPE ZNO; DILUTED MAGNETIC SEMICONDUCTOR; T-C FERROMAGNETISM; TITANIUM-DIOXIDE; TIO2 ANATASE; ELECTRIC PROPERTIES; SPIN INJECTION; QUANTUM DOTS AB The principal goal in the field of ferromagnetic semiconductors for devices is the synthesis, characterization and utilization of semiconductors that exhibit substantial carrier spin polarization at and above room temperature. Such materials are of critical importance in the emerging field of semiconductor spintronics. The interaction leading to carrier spin polarization, exchange coupling between the dopant spins and the valence or conduction band, is known to be sufficiently weak in conventional semiconductors such as GaAs, Si and Ge, that magnetic ordering above cryogenic temperatures is extraordinarily difficult to achieve, as experience has shown. Since the provocative theoretical predictions of Curie points above ambient in p-Mn:ZnO and p-Mn:GaN [T. Died, H. Ohno, F. Matsukura, J. Cibert, D. Ferrand, Science 287 (2000) 1019], and the observation of room-temperature ferromagnetism in Co:TiO2 anatase [Y. Matsumoto, M. Murakami, T. Shono, T. Hasegawa, T. Fukumura, M. Kawasaki. P. Ahmet, T. Chikyow, S.-Y. Koshihara, H. Koinuma, Science 291 (2001) 854], there has been a flurry of work in oxides and nitrides doped with transition metals with unpaired d electrons. It has even been claimed that room-temperature ferromagnetism can be obtained in certain do transition metals oxides without a dopant. In this Report, the field of magnetically doped oxides and nitrides is critically reviewed and assessed from a materials science perspective. The focus is on films prepared not only by conventional vacuum deposition methods, but also by spin coating colloidal nanoparticles in air. It is shown that despite their apparent simplicity, dilute magnetic systems are deceptively complex. High dopant mobilities and the existence of multiple structural configurations that are nearly degenerate lead to a range of embedded magnetic nanostructures within the host lattice. The resulting macroscopic magnetic properties are diverse and critically dependent on growth and processing conditions. (c) 2006 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Fundamental Sci Directorate, Richland, WA 99352 USA. RP Chambers, SA (reprint author), Pacific NW Natl Lab, Fundamental Sci Directorate, POB 999,MS K8-93, Richland, WA 99352 USA. EM sa.chambers@pnl.gov NR 144 TC 188 Z9 189 U1 10 U2 109 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-5729 EI 1879-274X J9 SURF SCI REP JI Surf. Sci. Rep. PD OCT PY 2006 VL 61 IS 8 BP 345 EP 381 DI 10.1016/j.surfrep.2006.05.001 PG 37 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 073NV UT WOS:000239750800001 ER PT J AU Anders, A Oks, EM Yushkov, GY Savkin, KP Brown, Y Nikolaev, AG AF Anders, A. Oks, E. M. Yushkov, G. Yu. Savkin, K. P. Brown, Y. Nikolaev, A. G. TI Determination of the specific ion erosion of the vacuum arc cathode by measuring the total ion current from the discharge plasma SO TECHNICAL PHYSICS LA English DT Article AB The specific ion erosion gamma(i) of cathodes made of C, Mg, Al, Ti, Co, Cu, Y, Mo, Cd, Sm, Ta, W, Pt, Pb, and Bi is determined by measuring the total ion current from the vacuum arc plasma. It is demonstrated that the ratio of the total ion current to the discharge current, alpha(i) in a vacuum arc varies from 5 to 19%, depending on the cathode material. It is found experimentally that the ion current fraction alpha(i) is inversely proportional to the atomic bond energy of the cathode material. It is shown that an increase in the total ion current extracted from the discharge plasma when applying an external magnetic field to the cathode region of the discharge is related solely to the appearance of ions with higher charge numbers in the plasma, while the magnitude of the specific ion erosion gamma(i) remains unchanged. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Russian Acad Sci, Inst High Current Elect, Siberian Div, Tomsk 643055, Russia. RP Anders, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM savkin@opee.tsc.ru 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 9 TC 5 Z9 5 U1 1 U2 1 PU MAIK NAUKA/INTERPERIODICA/SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013-1578 USA SN 1063-7842 J9 TECH PHYS+ JI Tech. Phys. PD OCT PY 2006 VL 51 IS 10 BP 1311 EP 1315 DI 10.1134/S1063784206100082 PG 5 WC Physics, Applied SC Physics GA 098YW UT WOS:000241560700008 ER PT J AU Krupinski, E Dimmick, S Grigsby, J Mogel, G Puskin, D Speedie, S Stamm, B Wakefield, B Whited, J Whitten, P Yellowlees, P AF Krupinski, Elizabeth Dimmick, Susan Grigsby, Jim Mogel, Greg Puskin, Dena Speedie, Stuart Stamm, Beth Wakefield, Bonnie Whited, John Whitten, Pamela Yellowlees, Peter TI Research recommendations for the American Telemedicine Association SO TELEMEDICINE JOURNAL AND E-HEALTH LA English DT Article ID DECISIONS AB The American Telemedicine Association (ATA) convened a panel of experts to generate a research agenda for the telemedicine community to further support and promote the long-term acceptance and use of telehealth. Three principles to guide research and four key areas within which research is greatly needed were identified. These four areas are technical, clinical, human factors and ergonomics, and economic analyses. It is the hope of the panel that the research recommendations put forth in this document will give investigators the inspiration, tools and goals to make this happen. C1 Univ Arizona, Hlth Sci Ctr, Dept Radiol, Tucson, AZ 85724 USA. Univ Tennessee, Ctr Hlth Sci, Oak Ridge Inst Sci & Educ, Memphis, TN 38163 USA. Univ Colorado, Hlth Sci Ctr, Div Healthcare Policy & Res, Denver, CO USA. Univ So Calif, Dept Radiol, Los Angeles, CA USA. USDHHS, Off Advancement Telehlth, Rockville, MD USA. Univ Minnesota, Sch Med, Dept Lab Med & Pathol, Div Hlth Informat, Minneapolis, MN 55455 USA. Idaho State Univ, Inst Rural Hlth, Pocatello, ID 83209 USA. Univ Missouri, Harry S Truman Mem Vet Hosp, Columbia, MO USA. Univ Missouri, Sinclair Sch Nursing, Columbia, MO USA. Duke Univ, Dept Med, VA Med Ctr, Ctr Hlth Serv Res Primary Care, Durham, NC USA. Michigan State Univ, Dept Telecommun, E Lansing, MI 48824 USA. Univ Calif Davis, Med Ctr, Dept Psychiat & Behav Sci, Sacramento, CA 95817 USA. Univ Calif Davis, Med Ctr, Ctr Hlth & Technol, Sacramento, CA 95817 USA. RP Krupinski, E (reprint author), Univ Arizona, Hlth Sci Ctr, Dept Radiol, 1609 N Warren,Bldg 211,Room 112,POB 245067, Tucson, AZ 85724 USA. EM krupinski@radiology.arizona.edu NR 34 TC 26 Z9 26 U1 0 U2 1 PU MARY ANN LIEBERT INC PI NEW ROCHELLE PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA SN 1530-5627 J9 TELEMED J E-HEALTH JI Telemed. J. e-Health PD OCT PY 2006 VL 12 IS 5 BP 579 EP 589 DI 10.1089/tmj.2006.12.579 PG 11 WC Health Care Sciences & Services SC Health Care Sciences & Services GA 101VJ UT WOS:000241768700027 PM 17042712 ER PT J AU Contreras, AM Grunes, J Yan, XM Liddle, A Somorjai, GA AF Contreras, A. M. Grunes, J. Yan, X. M. Liddle, A. Somorjai, G. A. TI Fabrication of 2-dimensional platinum nanocatalyst arrays by electron beam lithography: ethylene hydrogenation and CO-poisoning reaction studies SO TOPICS IN CATALYSIS LA English DT Article DE ethylene hydrogenation; CO poisoning; electron beam lithography; platinum nanoparticles. ID SINGLE-CRYSTAL SURFACES; DEUTERIUM-EXCHANGE REACTIONS; SUM-FREQUENCY GENERATION; ATMOSPHERIC-PRESSURE; SUPPORTED PLATINUM; PT(111) SURFACE; NORMAL-HEXANE; NANOPARTICLES; SILICA; SPECTROSCOPY AB Electron beam lithography (EBL) has been used to fabricate platinum nanoparticle arrays in the 20-nm size range on oxide thin films of silica and alumina deposited onto silicon wafers. A combination of characterization techniques (SEM, AFM, XPS, AES) has been used to determine size, spatial arrangement and cleanliness of these fabricated catalysts. Ethylene hydrogenation reaction studies have been carried out over these platinum nanoarrays and have revealed major differences in turnover rates and activation energies of the different nanostructures when clean and when poisoned with carbon monoxide. The oxide-metal interfaces Lire implicated as important reaction sites that remain active when the metal sites are poisoned by adsorbed carbon monoxide. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Somorjai, GA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM somorjai@berkeley.edu RI Liddle, James/A-4867-2013 OI Liddle, James/0000-0002-2508-7910 NR 34 TC 18 Z9 18 U1 2 U2 16 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD OCT PY 2006 VL 39 IS 3-4 BP 123 EP 129 DI 10.1007/s11244-006-0047-0 PG 7 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA 116LL UT WOS:000242804300002 ER PT J AU Winans, RE Vajda, S Ballentine, GE Elam, JW Lee, BD Pelline, MJ Seifert, S Tikhonov, GY Tomczyk, NA AF Winans, Randall E. Vajda, Stefan Ballentine, Gregory E. Elam, Jeffrey W. Lee, Byeongdu Pelline, Michael J. Seifert, Soenke Tikhonov, George Y. Tomczyk, Nancy A. TI Reactivity of supported platinum nanoclusters studied by in situ GISAXS: clusters stability under hydrogen SO TOPICS IN CATALYSIS LA English DT Article DE platinum; supported clusters; size-selection; sintering; thermal stability; aggregation; support effect; atomic layer deposition; ALD film; GISAXS; hydrogen ID ATOMIC LAYER DEPOSITION; X-RAY-SCATTERING; SURFACE-CHEMISTRY; CATALYSTS; GROWTH; NANOPARTICLES; FILMS AB This paper is an initial study of the reactivity and thermal stability of atomic platinum clusters supported on Al2O3/SiO2/Si(100) as a function of the thickness of the alumina film and presence of hydrogen. Extremely high thermal stability of Pt7-10 clusters in vacua as well as in the presence of hydrogen is observed on SiO2/Si(100) coated with six cycles of Al2O3 film prepared by an atomic layer deposition technique. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. Argonne Natl Lab, Ctr Nanoscale Mat, Div Energy Syst, Argonne, IL 60439 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Winans, RE (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. EM rewinans@anl.gov RI Pellin, Michael/B-5897-2008; OI Pellin, Michael/0000-0002-8149-9768; Lee, Byeongdu/0000-0003-2514-8805 NR 22 TC 52 Z9 52 U1 0 U2 18 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD OCT PY 2006 VL 39 IS 3-4 BP 145 EP 149 DI 10.1007/s11244-006-0050-5 PG 5 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA 116LL UT WOS:000242804300005 ER PT J AU Vajda, S Winans, RE Elam, JW Lee, BD Pellin, MJ Seifert, S Tikhonov, GY Tomczyk, NA AF Vajda, Stefan Winans, Randall E. Elam, Jeffrey W. Lee, Byeongdu Pellin, Michael J. Seifert, Soenke Tikhonov, George Y. Tomczyk, Nancy A. TI Supported gold clusters and cluster-based nanomaterials: characterization, stability and growth studies by in situ GISAXS under vacuum conditions and in the presence of hydrogen SO TOPICS IN CATALYSIS LA English DT Article DE laser vaporization; gold clusters; cluster structure; molecular beam; size selection; soft-landing; supported clusters; surface coverage; sintering; thermal stability; heat treatment; agglomeration; oxide support; alumina; silica; SiO2; Al2O3; support effect; grazing incidence small angle X-ray scattering; 2-dimensional growth; 3-dimensional growth; hydrogen atmosphere; aggregation; ALD film; GISAXS; isomerization ID ATOMIC LAYER DEPOSITION; CHEMISTRY AB This contribution is devoted to Study of the thermal stability and growth of gold nanoparticles supported oil SiO2/Si(111) and Al2O3/SiO2/Si(111) as a function of initial cluster size, support material and level of surface coverage. Experimental evidence for "flipping" of two dimensional cluster structures from vertical orientation to horizontal on the support is presented. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Vajda, S (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. EM vajda@anl.gov RI Pellin, Michael/B-5897-2008; OI Pellin, Michael/0000-0002-8149-9768; Lee, Byeongdu/0000-0003-2514-8805 NR 12 TC 60 Z9 60 U1 1 U2 20 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD OCT PY 2006 VL 39 IS 3-4 BP 161 EP 166 DI 10.1007/s11244-006-0052-3 PG 6 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA 116LL UT WOS:000242804300007 ER PT J AU Rioux, RM Song, H Grass, M Habas, S Niesz, K Hoefelmeyer, JD Yang, P Somorjai, GA AF Rioux, R. M. Song, H. Grass, M. Habas, S. Niesz, K. Hoefelmeyer, J. D. Yang, P. Somorjai, G. A. TI Monodisperse platinum nanoparticles of well-defined shape: synthesise characterization, catalytic properties and future prospects SO TOPICS IN CATALYSIS LA English DT Article DE nanoparticle synthesis; particle shape; catalyst characterization; reaction selectivity ID ELECTRON-BEAM LITHOGRAPHY; SUPPORTED-METAL CATALYSTS; ETHYLENE HYDROGENATION; PROPENE HYDROGENATION; PARTICLE-SIZE; UNSATURATED ALDEHYDES; STRUCTURE SENSITIVITY; MESOPOROUS SILICA; MODEL CATALYSTS; SURFACE SITES AB Monodisperse platinum nanoparticles with well-defined faceting have been synthesized by a modified polyol process with the addition of silver ions. Pt nanoparticles are encapsulated in mesoporous silica during in situ hydrothermal growth of the high surface area support. Removal of the surface regulating polymer, poly(vinylpyrrolidone), was achieved using thermal oxidation-reduction treatments. Catalysts were active for ethylene hydrogenation after polymer removal. Rates for ethylene hydrogenation decreased in accordance with the amount of Ag retained in the Pt nanoparticles after purification. Ag is most likely present on the Pt particle surface as small clusters. Future prospects for these catalysts for use in low temperature selective hydrogenation reactions are discussed. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Korea Adv Inst Sci & Technol, Dept Chem, Taejon 305701, South Korea. Univ S Dakota, Dept Chem, Vermillion, SD 57069 USA. RP Yang, P (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM p_yango@berkeley.edu; somorjai@berkeley.edu RI Hoefelmeyer, James/B-5278-2011; Song, Hyunjoon/C-1638-2011 OI Song, Hyunjoon/0000-0002-1565-5697 NR 61 TC 148 Z9 149 U1 10 U2 127 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD OCT PY 2006 VL 39 IS 3-4 BP 167 EP 174 DI 10.1007/s11244-006-0053-2 PG 8 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA 116LL UT WOS:000242804300008 ER PT J AU Stair, PC Marshall, C Xiong, G Feng, H Pellin, MJ Elam, JW Curtiss, L Iton, L Kung, H Kung, M Wang, HH AF Stair, P. C. Marshall, C. Xiong, G. Feng, H. Pellin, M. J. Elam, J. W. Curtiss, L. Iton, L. Kung, H. Kung, M. Wang, H. -H. TI Novel, uniform nanostructured catalytic membranes SO TOPICS IN CATALYSIS LA English DT Article DE nanostructured membranes; anodic aluminum oxidation (AAO); atomic layer deposition (ALD) ID ATOMIC LAYER DEPOSITION; ANODIC AL2O3 FILMS; ALUMINA; ELECTROLYTE; TRANSPORT; NANOPORES AB Nanostructured membrane structures have been fabricated by a combination of anodic aluminum oxidation (AAO) and atomic layer deposition (ALD) for use as platforms for the synthesis of highly uniform heterogeneous catalysts. The ALD method makes it possible to control pore diameters on the Angstrom scale even when the overall pore diameter is 10's to 100's of nanometers. AAO membranes imbedded in an aluminum sealing ring have been tested for flow properties and found to follow Knudsen diffusion behavior. Vanadia-coated membranes have been tested for the catalytic oxidative dehydrogenation of cyclohexane and show improved selectivity at the same conversion compared to conventional powdered alumina supported vanadia catalysts. C1 Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. Northwestern Univ, Ctr Catalysis & Surface Sci, Evanston, IL 60208 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Argonne Natl Lab, Div Chem Engn, Argonne, IL 60439 USA. Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA. Northwestern Univ, Dept Chem Engn, Evanston, IL 60208 USA. RP Stair, PC (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA. EM pstair@northwestern.edu RI Pellin, Michael/B-5897-2008; Marshall, Christopher/D-1493-2015 OI Pellin, Michael/0000-0002-8149-9768; Marshall, Christopher/0000-0002-1285-7648 NR 19 TC 44 Z9 44 U1 3 U2 27 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD OCT PY 2006 VL 39 IS 3-4 BP 181 EP 186 DI 10.1007/s11244-006-0055-0 PG 6 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA 116LL UT WOS:000242804300010 ER PT J AU Yan, WF Mahurin, SM Overbury, SH Dai, S AF Yan, Wenfu Mahurin, Shannon M. Overbury, Steven H. Dai, Sheng TI Nanoengineering catalyst supports via layer-by-layer surface functionalization SO TOPICS IN CATALYSIS LA English DT Article DE gold catalysts; Au; layer-by-layer; surface modification; CO oxidation; Au nanoparticles ID TEMPERATURE CO OXIDATION; MESOPOROUS SILICA MATERIALS; SOL-GEL MODIFICATION; GOLD NANOPARTICLES; THERMAL-STABILITY; AU/TIO2 CATALYSTS; CARBON-MONOXIDE; AU CATALYSTS; TITANIA; TIO2 AB Recent progress in the layer-by-layer surface modification of oxides for the preparation of highly active and stable gold nanocatalysts is briefly reviewed. Through a layer-by-layer surface modification approach, the surfaces of various catalyst supports including both porous and nonporous silica materials and TiO2 nanoparticles were modified with monolayers or multilayers of distinct metal oxide ultra-thin films. The surface-modified materials were used as supports for Au nanoparticles, resulting in highly active nanocatalysts for low-temperature CO oxidation. Good stability against sintering under high-temperature treatment was achieved for a number of the An catalysts through surface modification of the support material. The surface modification of supports can be a viable route to control both the composition and structure of support and nanoparticle interfaces, thereby tailoring the stability and activity of the supported catalyst systems. C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Dai, S (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. EM dais@ornl.gov RI Overbury, Steven/C-5108-2016; Dai, Sheng/K-8411-2015 OI Overbury, Steven/0000-0002-5137-3961; Dai, Sheng/0000-0002-8046-3931 NR 47 TC 32 Z9 33 U1 3 U2 26 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD OCT PY 2006 VL 39 IS 3-4 BP 199 EP 212 DI 10.1007/s11244-006-0058-x PG 14 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA 116LL UT WOS:000242804300013 ER PT J AU Herrera, JE Kwak, JH Hu, JZ Wang, Y Peden, CHF AF Herrera, Jose E. Kwak, Ja Hun Hu, Jian Zhi Wang, Yong Peden, Charles H. F. TI Synthesis of nanodispersed oxides of vanadium, titanium, molybdenum, and tungsten on mesoporous silica using atomic layer deposition SO TOPICS IN CATALYSIS LA English DT Article DE atomic layer deposition; tungsten oxide; vanadium oxide; titanium oxide; molybdenum oxide; ethanol oxidation; 2-butanol dehydration; UV/Vis-DRS; H-1-NMR ID TUNGSTOPHOSPHORIC ACID SALT; SUPPORTED VANADIUM; OPTICAL-ABSORPTION; THIN-FILMS; CATALYSTS; DEHYDRATION; EPITAXY; ALUMINA; V2O5; TRIMETHYLALUMINUM AB The advantages of the atomic layer deposition (ALD) method for preparation of tungsten, vanadium, titanium, and molybdenum oxide catalyst supported on mesoporous silica are discussed, with emphasis on the importance of synthesis conditions on dispersion, structure and activity of the resulting materials. A suite of complementary techniques such as DRS-UV/Vis, BET, H-1-NMR, XRD, and TEM were used to study the structural properties of the supported metal oxides, and probe reactions such as 2-butanol dehydration and ethanol partial oxidation were used to demonstrate the potential advantages of the ALD-prepared catalysts. Specifically, highly dispersed oxides of titanium, molybdenum, and tungsten oxide on mesoporous silica were synthesized using the ALD method. It is also demonstrated that attainment of high dispersions of vanadium oxide on mesoporous silica requires the presence of at least a single layer of titanium oxide due to the well-known poor interaction between vanadia and silica. The highly dispersed catalysts prepared here by ALD methods exhibited superior catalytic performance relative to those prepared using conventional incipient wetness impregnation. C1 Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA. RP Herrera, JE (reprint author), Pacific NW Natl Lab, Inst Interfacial Catalysis, 999,MS K8-98, Richland, WA 99352 USA. EM jose.herrera.perea@pnl.gov RI Hu, Jian Zhi/F-7126-2012; Wang, Yong/C-2344-2013; Kwak, Ja Hun/J-4894-2014; OI Peden, Charles/0000-0001-6754-9928 NR 40 TC 35 Z9 36 U1 1 U2 78 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD OCT PY 2006 VL 39 IS 3-4 BP 245 EP 255 DI 10.1007/s11244-006-0063-0 PG 11 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA 116LL UT WOS:000242804300018 ER PT J AU Kugler, EL Clark, CH Wright, JH Dadyburjor, DB Hanson, JC Song, Z Cai, TH Hrbek, J AF Kugler, Edwin L. Clark, Christopher H. Wright, James H. Dadyburjor, Dady B. Hanson, Jonathan C. Song, Zhen Cai, Tanhong Hrbek, Jan TI Preparation, interconversion and characterization of nanometer-sized molybdenum carbide catalysts SO TOPICS IN CATALYSIS LA English DT Article DE molybdenum carbide; time-resolved X-ray diffraction; temperature-programmed reduction; temperature-programmed desorption AB Nanometer-sized molybdenum carbide particles have been shown to have hydrogenation and other catalytic propel-ties similar to those of the more-expensive noble metals. However, current preparation techniques for molybdenum carbide require the high-temperature reduction of unsupported molybdenum oxide in the presence of CH4 and H-2. Although this method is effective, it yields particles of relatively large size, 11 nm. Different, simpler, synthesis procedures starting with ammonium heptamolybdate impregnated on carbon yield carbides of different stiochiometries. Particle sizes are in the 2-10 nm range, which are generally smaller than those previously obtained, and can be altered by changing the method of preparation. The focus of this work is to characterize the new procedures, specifically the bulk transitions of the new starting material to the different molybdenum carbides, using time-resolved X-ray diffraction, temperature-programmed reduction, and temperature-programmed desorption. C1 W Virginia Univ, Dept Chem Engn, Morgantown, WV 26506 USA. US DOE, Dept Chem, Brookhaven Natl Lab, Upton, NY 11973 USA. RP Kugler, EL (reprint author), W Virginia Univ, Dept Chem Engn, Morgantown, WV 26506 USA. EM edwin.kugler@mail.wvu.edu RI Hrbek, Jan/I-1020-2013; Hanson, jonathan/E-3517-2010 NR 9 TC 5 Z9 5 U1 5 U2 22 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD OCT PY 2006 VL 39 IS 3-4 BP 257 EP 262 DI 10.1007/s11244-006-0064-z PG 6 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA 116LL UT WOS:000242804300019 ER PT J AU Flores, E Herrero, A Wolk, CP Maldener, I AF Flores, Enrique Herrero, Antonia Wolk, C. Peter Maldener, Iris TI Is the periplasm continuous in filamentous multicellular cyanobacteria? SO TRENDS IN MICROBIOLOGY LA English DT Review ID SP STRAIN PCC-7120; BLUE-GREEN-ALGA; OUTER-MEMBRANE; CELLULAR-DIFFERENTIATION; ANABAENA CYLINDRICA; DIAZOTROPHIC GROWTH; PATTERN-FORMATION; HETEROCYSTS; ENVELOPE; ULTRASTRUCTURE AB Filamentous, heterocyst-forming cyanobacteria are multicellular organisms in which individual cells exchange nutrients and, presumably, regulatory molecules. Unknown mechanisms underlie this exchange. Classical electron microscopy shows that filamentous cyanobacteria bear a Gram-negative cell wall comprising a peptidoglycan layer and an outer membrane that are external to the cytoplasmic membrane, and that the outer membrane appears to be continuous along the filament of cells. This implies that the periplasmic space between the cytoplasmic and outer membranes might also be continuous. We propose that a continuous periplasm could constitute a communication conduit for the transfer of compounds, which is essential for the performance of these bacteria as multicellular organisms. C1 Univ Sevilla, CSIC, Inst Bioquim Vegetal & Fotosintesis, E-41092 Seville, Spain. Michigan State Univ, DOE Plant Res Lab, E Lansing, MI 48824 USA. Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA. Univ Regensburg, Lehrstuhl Zellbiol & Pflanzenphysiol, D-93040 Regensburg, Germany. RP Flores, E (reprint author), Univ Sevilla, CSIC, Inst Bioquim Vegetal & Fotosintesis, Amer Vespucio 49, E-41092 Seville, Spain. EM eflores@ibvf.csic.es RI Herrero, Antonia/B-7246-2015; Flores, Enrique/L-2007-2014 OI Herrero, Antonia/0000-0003-1071-6590; Flores, Enrique/0000-0001-7605-7343 NR 37 TC 73 Z9 75 U1 1 U2 11 PU ELSEVIER SCIENCE LONDON PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 0966-842X J9 TRENDS MICROBIOL JI Trends Microbiol. PD OCT PY 2006 VL 14 IS 10 BP 439 EP 443 DI 10.1016/j.tim.2006.08.007 PG 5 WC Biochemistry & Molecular Biology; Microbiology SC Biochemistry & Molecular Biology; Microbiology GA 094RU UT WOS:000241257500006 PM 16934472 ER PT J AU Arslan, I Tong, JR Midgley, PA AF Arslan, Ilke Tong, Jenna R. Midgley, Paul A. TI Reducing the missing wedge: High-resolution dual axis tomography of inorganic materials SO ULTRAMICROSCOPY LA English DT Article DE dual axis electron tomography; Z-contrast imaging; three-dimensional data ID 3-DIMENSIONAL RECONSTRUCTION; ELECTRON TOMOGRAPHY; PROJECTIONS; MICROSCOPY AB Electron tomography is a powerful technique that can probe the three-dimensional (3-D) structure of materials. Recently, this technique has been successfully applied to inorganic materials using Z-contrast imaging in a scanning transmission electron microscope to image nanomaterials in 3-D with a resolution of 1 nm in all three spatial dimensions. However, an artifact intrinsic to this technique limits the amount of information obtainable from any object, namely the missing wedge. One way to circumvent this problem is to acquire data from two perpendicular tilt axes, a technique called "dual axis tomography." This paper presents the first dual axis data at high resolution for inorganic materials, and by studying a CdTe tetrapod sample, demonstrates the increase in information obtained using this technique. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England. RP Arslan, I (reprint author), Sandia Natl Labs, 7011 East Ave, Livermore, CA 94550 USA. EM iarslan@sandia.gov NR 18 TC 86 Z9 86 U1 2 U2 20 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD OCT-NOV PY 2006 VL 106 IS 11-12 BP 994 EP 1000 DI 10.1016/j.ultramic.2006.05.010 PG 7 WC Microscopy SC Microscopy GA 099KJ UT WOS:000241592900007 PM 16890358 ER PT J AU Allen, LJ Findlay, SD Oxley, MP Witte, C Zaluzec, NJ AF Allen, L. J. Findlay, S. D. Oxley, M. P. Witte, C. Zaluzec, N. J. TI Modelling high-resolution electron microscopy based on core-loss spectroscopy SO ULTRAMICROSCOPY LA English DT Article DE high-resolution electron microscopy; core-loss spectroscopy; HARECES; STEM; nonlocality ID INELASTICALLY SCATTERED ELECTRONS; ENERGY-LOSS SPECTROSCOPY; ABSORPTIVE FORM-FACTORS; SHELL IONIZATION; ATOMIC-STRUCTURE; CRYSTALS; DIFFRACTION; LATTICE; STEM; DELOCALIZATION AB There are a number of factors affecting the formation of images based on core-loss spectroscopy in high-resolution electron microscopy. We demonstrate unambiguously the need to use a full nonlocal description of the effective core-loss interaction for experimental results obtained from high angular resolution electron channelling electron spectroscopy. The implications of this model are investigated for atomic resolution scanning transmission electron microscopy. Simulations are used to demonstrate that core-loss spectroscopy images formed using fine probes proposed for future microscopes can result in images that do not correspond visually with the structure that has led to their formation. In this context, we also examine the effect of varying detector geometries. The importance of the contribution to core-loss spectroscopy images by dechannelled or diffusely scattered electrons is reiterated here. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia. Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA. Argonne Natl Lab, Ctr Electron Microscopy, Div Mat Sci, Argonne, IL 60439 USA. RP Allen, LJ (reprint author), Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia. EM lja@physics.unimelb.edu.au RI Findlay, Scott/C-9764-2013 OI Findlay, Scott/0000-0003-4862-4827 NR 43 TC 19 Z9 19 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD OCT-NOV PY 2006 VL 106 IS 11-12 BP 1001 EP 1011 DI 10.1016/j.ultramic.2006.05.011 PG 11 WC Microscopy SC Microscopy GA 099KJ UT WOS:000241592900008 PM 16843600 ER PT J AU van Benthem, K Lupini, AR Oxley, MP Findlay, SD Allen, LJ Pennycook, SJ AF van Benthem, Klaus Lupini, Andrew R. Oxley, Mark P. Findlay, Scott D. Allen, Leslie J. Pennycook, Stephen J. TI Three-dimensional ADF imaging of individual atoms by through-focal series scanning transmission electron microscopy SO ULTRAMICROSCOPY LA English DT Article DE optical slicing; STEM; ADF AB Aberration correction in scanning transmission electron microscopy has more than doubled the lateral resolution, greatly improving the visibility of individual impurity or dopant atoms. Depth resolution is increased five-fold, to the nanometer level. We show how a through-focal series of images enables single Hf atoms to be located inside an advanced gate dielectric device structure to a precision of better than 0.1 x 0.1 x 0.5 nm. This depth sectioning method for three-dimensional characterization has potential applications to many other fields, including polycrystalline materials, catalysts and biological structures. Published by Elsevier B.V. C1 Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA. Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia. RP van Benthem, K (reprint author), Oak Ridge Natl Lab, Condensed Matter Sci Div, POB 2008, Oak Ridge, TN 37831 USA. EM benthem@ornl.gov RI Findlay, Scott/C-9764-2013 OI Findlay, Scott/0000-0003-4862-4827 NR 14 TC 58 Z9 58 U1 1 U2 22 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD OCT-NOV PY 2006 VL 106 IS 11-12 BP 1062 EP 1068 DI 10.1016/j.ultramic.2006.04.020 PG 7 WC Microscopy SC Microscopy GA 099KJ UT WOS:000241592900015 PM 16875782 ER PT J AU Mizoguchi, T Tatsumi, K Tanaka, I AF Mizoguchi, Teruyasu Tatsumi, Kazuyoshi Tanaka, Isao TI Peak assignments of ELNES and XANES using overlap population diagrams SO ULTRAMICROSCOPY LA English DT Article DE ELNES; first-principles calculation; core-hole effect; chemical bonding ID ENERGY-LOSS SPECTROSCOPY; NEAR-EDGE STRUCTURE; ABSORPTION FINE-STRUCTURE; 1ST-PRINCIPLES CALCULATIONS; ELECTRONIC-STRUCTURE; GRAIN-BOUNDARIES; IDENTIFICATION; ELNES/XANES; POLYTYPES; SPECTRA AB The usefulness of overlap population (OP) diagrams for peak assignments of an electron energy loss near-edge structure (ELNES) and an X-ray absorption near-edge structure (XANES) is demonstrated. Mg-K, L-2,L-3, and O-K edges of MgO are taken as examples. Theoretical calculations are performed using a first-principles orthogonalized linear combination of atomic orbitals (OLCAO) method. A core-hole is included explicitly, and a large supercell is used to minimize artificial interactions among the core-holes in adjacent cells. All experimental spectra are quantitatively reproduced by the calculations. The OP diagrams for a selected pair of atomic orbitals are computed in order to provide proper assignments for each peak in ELNES and XANES. They are interpreted in terms of interactions among Mg-Mg and Mg-O bonds. Results are found to be consistent to our previous conclusion, which was obtained using a cluster method [T. Mizoguchi, et al., Phys. Rev. B 61 (2000) 2180]. The powerful combination of the OP diagram and a high-energy resolution ELNES to obtain fine electronic structures is also demonstrated. (c) 2006 Elsevier B.V. All rights reserved. C1 Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. Univ Tokyo, Inst Engn Innovat, Bunkyo Ku, Tokyo 1138656, Japan. Nagoya Univ, Dept Mat Phys & Energy Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan. Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan. RP Mizoguchi, T (reprint author), Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, 1 Cyclotron Rd,MS 72-105, Berkeley, CA 94720 USA. EM mizoguchi@sigma.t.u-tokyo.ac.jp RI Mizoguchi, Teruyasu/B-8044-2008; Tanaka, Isao/B-5941-2009 OI Mizoguchi, Teruyasu/0000-0003-3712-7307; NR 36 TC 22 Z9 22 U1 2 U2 14 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD OCT-NOV PY 2006 VL 106 IS 11-12 BP 1120 EP 1128 DI 10.1016/j.ultramic.2006.04.027 PG 9 WC Microscopy SC Microscopy GA 099KJ UT WOS:000241592900022 PM 16870343 ER PT J AU Fokidis, HB Robertson, C Risch, TS AF Fokidis, H. Bobby Robertson, Christy Risch, Thomas S. TI Keeping tabs: Are redundant marking systems needed for rodents? SO WILDLIFE SOCIETY BULLETIN LA English DT Article DE cotton mice; deer mice; ear tag; flying squirrels; Glaucomys volans; hispid cotton rats; house mice; Mus musculus; passive integrated transponder tags; Peromyscus gossypinus; P. maniculatus; Sigmodon hispidus; survival analysis; tag failure ID SOUTHERN FLYING SQUIRRELS; TAG LOSS; POPULATION-SIZE; RECAPTURE; SURVIVAL; CAPTURE; DIVORCE; SUCCESS; LOBSTER; RATES AB We use survival analysis to compare failure of passive integrated transponder (PIT) tags and loss of metal ear tags in 2,277 southern flying squirrels (Glaucomys volans), 124 house mice (Mus musculus), 112 hispid cotton rats (Sigmodon hispiclus), and 374 deer (Peromyscus maniculatus) and cotton mice (P. gossypinus). With the exception of cotton rats, failure rates between ear and PIT tags differed by species. Flying squirrels exhibited the highest proportional loss of both tag types and lost ear tags more readily than PIT tags failed. The opposite was true for cotton rats and deer and cotton mice. Most PIT tags appeared to fail shortly after implantation (<= 3 days), except for flying squirrels and, to a lesser extent, cotton rats. Ear tags exhibited a consistent rate of loss in flying squirrels. Body mass did not influence failure of PIT tags; however, flying squirrel body mass was associated with increased loss of ear tags. For flying squirrels PIT tag failure increased with the number of times an individual had already received a PIT tag that failed. We provide recommendations for using PIT and ear tags in marking rodents based on species-specific patterns and suggest the combined use of external and internal markers to obtain the most reliable estimates of population parameters. C1 Arkansas State Univ, Dept Biol Sci, State Univ, AR 72467 USA. Savannah River Ecol Lab, Aiken, SC 29802 USA. RP Fokidis, HB (reprint author), Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA. EM Bobby.Fokidis@asu.edu RI Fokidis, Bobby/I-8366-2015 OI Fokidis, Bobby/0000-0003-2386-4066 NR 40 TC 5 Z9 8 U1 1 U2 23 PU WILDLIFE SOC PI BETHESDA PA 5410 GROSVENOR LANE, BETHESDA, MD 20814-2197 USA SN 0091-7648 J9 WILDLIFE SOC B JI Wildl. Soc. Bull. PD OCT PY 2006 VL 34 IS 3 BP 764 EP 771 DI 10.2193/0091-7648(2006)34[764:KTARMS]2.0.CO;2 PG 8 WC Biodiversity Conservation SC Biodiversity & Conservation GA 110SF UT WOS:000242398700027 ER PT J AU Nazridoust, K Ahmadi, G Smith, DH AF Nazridoust, Kambiz Ahmadi, Goodarz Smith, Duane H. TI A new friction factor correlation for laminar, single-phase flows through rock fractures SO JOURNAL OF HYDROLOGY LA English DT Article DE fractured rock; friction factor; parallel plate; correlation; laminar; single-phase; FLUENT; CFD; pressure drop; fluid flow ID FLUID-FLOW; SURFACE-ROUGHNESS; NUMERICAL-MODEL; CUBIC LAW; TRANSPORT; INJECTION; PERMEABILITY; TORTUOSITY; BEHAVIOR; GEOMETRY AB Single-phase flow through fractured media occurs in various situations, such as transport of dissolved contaminants through geological strata, sequestration of carbon dioxide in depleted gas reservoirs, and in primary oil recovery. In the present study, fluid flows through a rock fracture were simulated. The fracture geometry was obtained from the CT scans of a rock fracture produced by the Brazilian method in a sandstone sample. A post-processing code using a CAD package was developed and used to generate the three-dimensional fracture from the CT scan data. Several sections along the fracture were considered and the Gambit (TM) code was used to generate unstructured grids for flow simulations. FLUENT (TM) was used to analyze the flow conditions through the fracture section for different flow rates. Because of the small aperture of the fractures, the gravitational effects could be neglected. It was confirmed that the pressure drop was dominated by the smallest aperture passages of the fracture. The accuracy of parallel plate models for estimating the pressure drops through fractures was studied. It was shown that the parallel plate flow model with the use of an appropriate effective fracture aperture and inclusion of the tortuosity factor could provide reasonable estimates for pressure drops in the fracture. On the basis of the CFD simulation data, a new expression for the friction factor for flows through fractures was developed. The new model predictions were compared with the simulation results and favorable agreement was found. It was shown that when the length of the fracture and the mean and standard deviation of the fracture are known, the pressure loss as a function of the flow rate could be estimated. These findings may prove useful for design of lab experiments, computational studied of flows through real rock fractures, or inclusions in simulators for large-scale flows in highly fractured rocks. (c) 2006 Elsevier B.V. All rights reserved. C1 Clarkson Univ, Dept Mech & Aeronaut Engn, Potsdam, NY 13699 USA. US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA. RP Nazridoust, K (reprint author), Clarkson Univ, Dept Mech & Aeronaut Engn, Box 5725, Potsdam, NY 13699 USA. EM kambiz@clarkson.edu NR 37 TC 26 Z9 27 U1 1 U2 14 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-1694 J9 J HYDROL JI J. Hydrol. PD SEP 30 PY 2006 VL 329 IS 1-2 BP 315 EP 328 DI 10.1016/j.jhydrol.2006.02.032 PG 14 WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources SC Engineering; Geology; Water Resources GA 089NV UT WOS:000240888300025 ER PT J AU Ju, T Warren, J Carson, J Bello, M Kakadiaris, I Chiu, W Thaller, C Eichele, G AF Ju, Tao Warren, Joe Carson, James Bello, Musodiq Kakadiaris, Ioannis Chiu, Wah Thaller, Christina Eichele, Gregor TI 3D volume reconstruction of a mouse brain from histological sections using warp filtering SO JOURNAL OF NEUROSCIENCE METHODS LA English DT Article DE 3D reconstruction; filtering; image warping; dynamic programming; histology ID AUTOMATED IMAGE REGISTRATION; 3-DIMENSIONAL RECONSTRUCTION; RAT-BRAIN; MUTUAL INFORMATION; ALIGNMENT; TISSUE; ATLAS; DISTORTION; ALGORITHM; MRI AB Sectioning tissues for optical microscopy often introduces upon the resulting sections distortions that make 3D reconstruction difficult. Here we present an automatic method for producing a smooth 3D volume from distorted 2D sections in the absence of any undistorted references. The method is based on pairwise elastic image warps between successive tissue sections, which can be computed by 2D image registration. Using a Gaussian filter, an average warp is computed for each section from the pairwise warps in a group of its neighboring sections. The average warps deform each section to match its neighboring sections, thus creating a smooth volume where corresponding features on successive sections lie close to each other. The proposed method can be used with any existing 2D image registration method for 3D reconstruction. In particular, we present a novel image warping algorithm based on dynamic programming that extends Dynamic Time Warping in 1D speech recognition to compute pairwise warps between high-resolution 2D images. The warping algorithm efficiently computes a restricted class of 2D local deformations that are characteristic between successive tissue sections. Finally, a validation framework is proposed and applied to evaluate the quality of reconstruction using both real sections and a synthetic volume. (c) 2006 Elsevier B.V. All rights reserved. C1 Rice Univ, Houston, TX 77251 USA. Baylor Coll Med, Houston, TX 77030 USA. Max Planck Inst Expt Endocrinol, Hannover, Germany. Univ Houston, Houston, TX 77004 USA. Washington Univ, St Louis, MO USA. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Ju, T (reprint author), 1 Brookings Dr,Campus Box 1045, St Louis, MO 63130 USA. EM taoju@cs.wustl.edu OI Kakadiaris, Ioannis/0000-0002-0591-1079 NR 68 TC 50 Z9 50 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0270 J9 J NEUROSCI METH JI J. Neurosci. Methods PD SEP 30 PY 2006 VL 156 IS 1-2 BP 84 EP 100 DI 10.1016/j.jneumeth.2006.02.020 PG 17 WC Biochemical Research Methods; Neurosciences SC Biochemistry & Molecular Biology; Neurosciences & Neurology GA 092WA UT WOS:000241126800012 PM 16580732 ER PT J AU Liao, HX Sutherland, LL Xia, SM Brock, ME Scearce, RM Vanleeuwen, S Alam, SM McAdams, M Weaver, EA Camacho, ZT Ma, BJ Li, YY Decker, JM Nabel, GJ Montefiori, DC Hahn, BH Korber, BT Gao, F Haynes, BF AF Liao, Hua-Xin Sutherland, Laura L. Xia, Shi-Mao Brock, Mary E. Scearce, Richard M. Vanleeuwen, Stacie Alam, S. Munir McAdams, Mildred Weaver, Eric A. Camacho, Zenaido T. Ma, Ben-Jiang Li, Yingying Decker, Julie M. Nabel, Gary J. Montefiori, David C. Hahn, Beatrice H. Korber, Bette T. Gao, Feng Haynes, Barton F. TI A group M consensus envelope glycoprotein induces antibodies that neutralize subsets of subtype B and CHIV-1 primary viruses SO VIROLOGY LA English DT Article DE HIV-1; vaccine; neutralization antibody; consensus inummogens ID HUMAN-IMMUNODEFICIENCY-VIRUS; FUSION INHIBITOR T-20; TYPE-1 ENVELOPE; HIV TYPE-1; V3 LOOP; MONOCLONAL-ANTIBODIES; RHESUS MACAQUES; GP120; IMMUNOGENICITY; IMMUNIZATION AB HIV-1 subtype C is the most common HIV-1 group M subtype in Africa and many parts of Asia. However, to date HIV-1 vaccine candidate immunogens have not induced potent and broadly neutralizing antibodies against subtype C primary isolates. We have used a centralized gene strategy to address HIV-1 diversity and generated a group M consensus envelope gene with shortened consensus variable loops (CON-S) for comparative studies with wild-type (WT) Env immunogens. Our results indicate that the consensus HIV-1 group M CON-S Env elicited cross-subtype neutralizing antibodies of similar or greater breadth and titer than the WT Envs tested, indicating the utility of a centralized gene strategy. Our study also shows the feasibility of iterative improvements in Env immunogenicity by rational design of centralized genes. (c) 2006 Published by Elsevier Inc. C1 Duke Univ, Sch Med, Duke Human Vaccine Inst, Durham, NC 27710 USA. Duke Univ, Sch Med, Dept Med, Durham, NC 27710 USA. Duke Univ, Sch Med, Dept Surg, Durham, NC 27710 USA. NIAID, Vaccine Res Ctr, NIH, Bethesda, MD 20892 USA. Univ Alabama, Dept Med, Birmingham, AL 35203 USA. Univ Alabama, Dept Microbiol, Birmingham, AL 35203 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Santa Fe Inst, Santa Fe, NM 87501 USA. RP Liao, HX (reprint author), Duke Univ, Sch Med, Duke Human Vaccine Inst, Durham, NC 27710 USA. EM hilao@acpub.duke.edu OI Korber, Bette/0000-0002-2026-5757 FU NIAID NIH HHS [N01 AI085338, P01 AI 28147, P01 AI046023, P01 AI061734, P30 AI051445, P30 AI51445, P01 AI52816, R21AI55386, R21 AI055386, P01 AI052816, P0-1, AI061734, N01 AI085338-002, N01 AI 85338, P01 AI028147] NR 58 TC 125 Z9 129 U1 1 U2 9 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0042-6822 J9 VIROLOGY JI Virology PD SEP 30 PY 2006 VL 353 IS 2 BP 268 EP 282 DI 10.1016/j.virol.2006.04.043 PG 15 WC Virology SC Virology GA 090DN UT WOS:000240930900003 PM 17039602 ER PT J AU Giefers, H Pravica, M Liermann, HP Yang, WG AF Giefers, Hubertus Pravica, Michael Liermann, Hanns-Peter Yang, Wenge TI Radiation-induced decomposition of PETN and TATB under pressure SO CHEMICAL PHYSICS LETTERS LA English DT Article ID STABILITY AB We have investigated decomposition of PETN and TATB induced by white synchrotron X-ray radiation in a diamond anvil cell at ambient temperature and two pressures, nearly ambient and about 6 GPa. The decomposition rate of TATB decreases significantly when it is pressurized to 5.9 GPa. The measurements were highly reproducible and allowed us to obtain decomposition rates and the order parameters of the reactions. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Nevada, Dept Phys, High Pressure Sci & Engn Ctr, Las Vegas, NV 89154 USA. Argonne Natl Lab, High Pressure Collaborat Access Team, Argonne, IL 60439 USA. Argonne Natl Lab, Geophys Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Giefers, H (reprint author), Univ Nevada, Dept Phys, High Pressure Sci & Engn Ctr, 4505 Maryland Pkwy, Las Vegas, NV 89154 USA. EM hubertus@physics.unlv.edu NR 23 TC 11 Z9 11 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD SEP 29 PY 2006 VL 429 IS 1-3 BP 304 EP 309 DI 10.1016/j.cplett.2006.07.092 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 091HV UT WOS:000241018800059 ER PT J AU Shi, L Adkins, JN Coleman, JR Schepmoes, AA Dohnkova, A Mottaz, HM Norbeck, AD Purvine, SO Manes, NP Smallwood, HS Wang, HX Forbes, J Gros, P Uzzau, S Rodland, KD Heffron, F Smith, RD Squier, TC AF Shi, Liang Adkins, Joshua N. Coleman, James R. Schepmoes, Athena A. Dohnkova, Alice Mottaz, Heather M. Norbeck, Angela D. Purvine, Samuel O. Manes, Nathan P. Smallwood, Heather S. Wang, Haixing Forbes, John Gros, Philippe Uzzau, Sergio Rodland, Karin D. Heffron, Fred Smith, Richard D. Squier, Thomas C. TI Proteomic analysis of Salmonella enterica serovar Typhimurium isolated from RAW 264.7 macrophages - Identification of a novel protein that contributes to the replication of serovar Typhimurium inside macrophages SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID INTEGRATION HOST FACTOR; III SECRETION SYSTEM; IN-VIVO; ANTIMICROBIAL PEPTIDES; PATHOGENICITY ISLAND-2; ANTIBIOTIC-RESISTANCE; CONTAINING VACUOLES; CHROMOSOMAL GENES; MASS-SPECTROMETRY; ESCHERICHIA-COLI AB To evade host resistance mechanisms, Salmonella enterica serovar Typhimurium (STM), a facultative intracellular pathogen, must alter its proteome following macrophage infection. To identify new colonization and virulence factors that mediate STM pathogenesis, we have isolated STM cells from RAW 264.7 macrophages at various time points following infection and used a liquid chromatography-mass spectrometry-based proteomic approach to detect the changes in STM protein abundance. Because host resistance to STM infection is strongly modulated by the expression of a functional host-resistant regulator, i.e. natural resistance-associated macrophage protein 1 (Nramp1, also called Slc11a1), we have also examined the effects of Nramp1 activity on the changes of STM protein abundances. A total of 315 STM proteins have been identified from isolated STM cells, which are largely housekeeping proteins whose abundances remain relatively constant during the time course of infection. However, 39 STM proteins are strongly induced after infection, suggesting their involvement in modulating colonization and infection. Of the 39 induced proteins, 6 proteins are specifically modulated by Nramp1 activity, including STM3117, as well as STM3118-3119 whose time-dependent abundance changes were confirmed using Western blot analysis. Deletion of the gene encoding STM3117 resulted in a dramatic reduction in the ability of STM to colonize wild-type RAW 264.7 macrophages, demonstrating a critical involvement of STM3117 in promoting the replication of STM inside macrophages. The predicted function common for STM3117-3119 is biosynthesis and modification of the peptidoglycan layer of the STM cell wall. C1 Pacific NW Natl Lab, Microbiol Grp, Richland, WA 99354 USA. Univ Sassari, I-07100 Sassari, Italy. McGill Univ, Montreal, PQ H3G 1Y6, Canada. Univ Sassari, I-07100 Sassari, Italy. Oregon Hlth & Sci Univ, Portland, OR 97201 USA. RP Shi, L (reprint author), Pacific NW Natl Lab, Microbiol Grp, 902 Battelle Blvd,POB 999, Richland, WA 99354 USA. EM liang.shi@pnl.gov RI Manes, Nathan/E-2817-2012; Smith, Richard/J-3664-2012; Adkins, Joshua/B-9881-2013 OI Manes, Nathan/0000-0001-6701-3314; Smith, Richard/0000-0002-2381-2349; Adkins, Joshua/0000-0003-0399-0700 FU NIAID NIH HHS [Y1-AI-4894-01] NR 57 TC 87 Z9 90 U1 1 U2 15 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD SEP 29 PY 2006 VL 281 IS 39 BP 29131 EP 29140 DI 10.1074/jbc.M604640200 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 086NO UT WOS:000240680500067 PM 16893888 ER PT J AU Watson, NE VanWingerden, MM Pierce, KM Wright, BW Synovec, RE AF Watson, Nathanial E. VanWingerden, Matthew M. Pierce, Karisa M. Wright, Bob W. Synovec, Robert E. TI Classification of high-speed gas chromatography-mass spectrometry data by principal component analysis coupled with piecewise alignment and feature selection SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article DE alignment; gas chromatography; feature selection; principal component analysis; fuel; chemometrics; GC-MS ID AUTOMOTIVE GASOLINE SAMPLES; CAPILLARY-ELECTROPHORESIS; ALGORITHM; OIL AB A useful methodology is introduced for the analysis of data obtained via gas chromatography with mass spectrometry (GC-MS) utilizing a complete mass spectrum at each retention time interval in which a mass spectrum was collected. Principal component analysis (PCA) with preprocessing by both piecewise retention time alignment and analysis of variance (ANOVA) feature selection is applied to all mass channels collected. The methodology involves concatenating all concurrently measured individual m/z chromatograms from m/z 20 to 120 for each GC-MS separation into a row vector. All of the sample row vectors are incorporated into a matrix where each row is a sample vector. This matrix is piecewise aligned and reduced by ANOVA feature selection. Application of the preprocessing steps (retention time alignment and feature selection) to all mass channels collected during the chromatographic separation allows considerably more selective chemical information to be incorporated in the PCA classification, and is the primary novelty of the report. This methodology is objective and requires no knowledge of the specific analytes of interest, as in selective ion monitoring (SIM), and does not restrict the mass spectral data used, as in both SIM and total ion current (TIC) methods. Significantly, the methodology allows for the classification of data with low resolution in the chromatographic dimension because of the added selectivity from the complete mass spectral dimension. This allows for the successful classification of data over significantly decreased chromatographic separation times, since high-speed separations can be employed. The methodology is demonstrated through the analysis of a set of four differing gasoline samples that serve as model complex samples. For comparison, the gasoline samples are analyzed by GC-MS over both 10-min and 10-s separation times. The successfully classified 10-min GC-MS TIC data served as the benchmark analysis to compare to the 10-s data. When only alignment and feature selection was applied to the 10-s gasoline separations using GC-MS TIC data, PCA failed. PCA was successful for 10-s gasoline separations when the methodology was applied with all the m/z information. With ANOVA feature selection, chromatographic regions with Fisher ratios greater than 1500 were retained in a new matrix and subjected to PCA yielding successful classification for the 10-s separations. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Washington, Dept Chem, Seattle, WA 98195 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. US Mil Acad, Dept Chem & Life Sci, West Point, NY 10996 USA. RP Synovec, RE (reprint author), Univ Washington, Dept Chem, Box 351700, Seattle, WA 98195 USA. EM synovec@chem.washington.edu NR 21 TC 25 Z9 26 U1 0 U2 12 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 29 PY 2006 VL 1129 IS 1 BP 111 EP 118 DI 10.1016/j.chroma.2006.06.087 PG 8 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 088BX UT WOS:000240787600017 PM 16860329 ER PT J AU Campbell, L Cartwright, DC Brunger, MJ Teubner, PJO AF Campbell, L. Cartwright, D. C. Brunger, M. J. Teubner, P. J. O. TI Role of electronic excited N-2 in vibrational excitation of the N-2 ground state at high latitudes SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID FINE-STRUCTURE LEVELS; ION-NEUTRAL REACTIONS; ENERGY TRANSFER RATES; SOFT X-RAYS; ATOMIC OXYGEN; MOLECULAR NITROGEN; LOWER THERMOSPHERE; CROSS-SECTIONS; NITRIC-OXIDE; IMPACT EXCITATION AB Vibrationally excited N-2 is important in determining the ionospheric electron density and has also been proposed to play a role in the production of NO in disturbed atmospheres. We report here predictions of the absolute vibrational distributions in the ground electronic state of N-2 produced by electron impact excitation, at noon and midnight under quiet geomagnetic conditions and disturbed conditions corresponding to the aurora IBCII+ and IBCIII+ at 60 degrees N latitude and 0 degrees longitude, at altitudes between 130 and 350 km. These predictions were obtained from a model which includes thermal excitation and direct electron impact excitation of the vibrational levels of the N-2 ground state and its excited electronic states; radiative cascade from all excited electronic states to all vibrational levels of the ground electronic state; quenching by O, O-2, and N-2; molecular and ambipolar diffusion; and the dominant chemical reactions. Results from this study show that for both aurora and daytime electron environments: (1) cascade from the higher electronic states of N-2 determines the population of the higher vibrational levels in the N-2 ground state and (2) the effective ground state vibrational temperature for levels greater than 4 in N-2 is predicted to be in the range 4000-13000 K for altitudes greater than 200 km. Correspondingly, the associated enhancement factor for the O+ reaction with vibrationally excited N-2 to produce NO+ is predicted to increase with increasing altitude (up to a maximum at a height which increases with auroral strength) for both aurora and daytime environments and to increase with increasing auroral strength. The contribution of the cascade from the excited electronic states was evaluated and found to be relatively minor compared to the direct excitation process. C1 Flinders Univ S Australia, Sch Chem Phys & Earth Sci, ARc Ctr Antimatter Matter Studies, Adelaide, SA 5001, Australia. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Campbell, L (reprint author), Flinders Univ S Australia, Sch Chem Phys & Earth Sci, ARc Ctr Antimatter Matter Studies, GPO Box 2100, Adelaide, SA 5001, Australia. EM laurence.campbell@flinders.edu.au OI Campbell, Laurence/0000-0003-0728-554X NR 94 TC 20 Z9 20 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9380 EI 2169-9402 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD SEP 29 PY 2006 VL 111 IS A9 AR A09317 DI 10.1029/2005JA011292 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 090KF UT WOS:000240949500002 ER PT J AU Smith, CA AF Smith, Clyde A. TI Structure, function and dynamics in the mur family of bacterial cell wall ligases SO JOURNAL OF MOLECULAR BIOLOGY LA English DT Review DE peptidoglycan biosynthesis; ATPase; X-ray structure; multidomain enzymes; conformational change ID UDP-N-ACETYLGLUCOSAMINE; HUMAN FOLYLPOLYGLUTAMATE SYNTHETASE; ANGSTROM CRYSTAL-STRUCTURE; ALANINE-ADDING ENZYME; POLY-GAMMA-GLUTAMATE; ESCHERICHIA-COLI; PEPTIDOGLYCAN BIOSYNTHESIS; ENOLPYRUVYL TRANSFERASE; ACTIVE-SITE; MECHANISM AB For bacteria, the structural integrity of its cell wall is of utmost importance for survival, and to this end, a rigid scaffold called peptidoglycan, comprised of sugar molecules and peptides, is synthesized and located outside the cytoplasmic membrane of the cell. Disruption of this peptidoglycan layer has for many years been a prime target for effective antibiotics, namely the penicillins and cephalosporins. Because this rigid layer is synthesized by a multi-step pathway numerous additional targets also exist that have no counterpart in the animal cell. Central to this pathway are four similar ligase enzymes, which add peptide groups to the sugar molecules, and interrupting these steps would ultimately prove fatal to the bacterial cell. The mechanisms of these ligases are well understood and the structures of all four of these ligases are now known. A detailed comparison of these four enzymes shows that considerable conformational changes are possible and that these changes, along with the recruitment of two different N-terminal binding domains, allows these enzymes to bind a substrate which at one end is identical and at the other has the growing polypeptide tail. Some insights into the structure-function relationships in these enzymes is presented. (c) 2006 Elsevier Ltd. All rights reserved. C1 Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. RP Smith, CA (reprint author), Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. EM csmith@slac.stanford.edu NR 66 TC 77 Z9 77 U1 1 U2 12 PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-2836 J9 J MOL BIOL JI J. Mol. Biol. PD SEP 29 PY 2006 VL 362 IS 4 BP 640 EP 655 DI 10.1016/j.jmb.2006.07.066 PG 16 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 095RE UT WOS:000241324700002 PM 16934839 ER PT J AU Tucker, MC Kurokawa, H Jacobson, CP De Jonghe, LC Visco, SJ AF Tucker, Michael C. Kurokawa, Hideto Jacobson, Craig P. De Jonghe, Lutgard C. Visco, Steven J. TI A fundamental study of chromium deposition on solid oxide fuel cell cathode materials SO JOURNAL OF POWER SOURCES LA English DT Article DE solid oxide fuel cell; stainless steel; chromium; LSM; LSCF ID METALLIC INTERCONNECTS; AIR AB Chromium contamination of metal oxides and SOFC cathode catalysts is studied in the range 700-1000 degrees C. Samples are exposed to a moist air atmosphere saturated with volatile Cr species in the presence and absence of direct contact between the sample and ferritic stainless steel powder. Chromium contamination of the samples is observed to occur via two separate pathways: surface diffusion from the stainless steel surface and vapor deposition from the atmosphere. Surface diffusion dominates in all cases. Surface diffusion is found to be a significant source of Cr contamination for LSM and LSCF at 700, 800, and 1000 degrees C. Vapor deposition of Cr onto LSCF was observed at each of these temperatures, but was not observed for LSM at 700 or 800 degrees C. Comparison of the behavior for LSM, LSCF, and single metal oxides suggests that Mn and Co, respectively, are responsible for the Cr contamination of these catalysts. (c) 2006 Elsevier B.V. All rights reserved. C1 Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Tucker, MC (reprint author), Lawrence Berkeley Natl Lab, Div Mat Sci, 1 Cyclotron Rd,MS 62-203, Berkeley, CA 94720 USA. EM mctucker@lbl.gov NR 15 TC 87 Z9 91 U1 1 U2 20 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 29 PY 2006 VL 160 IS 1 BP 130 EP 138 DI 10.1016/j.powsour.2006.02.017 PG 9 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 091ZQ UT WOS:000241067200017 ER PT J AU Partridge, WP Toops, TJ Green, JB Armstrong, TR AF Partridge, W. P. Toops, T. J. Green, J. B. Armstrong, T. R. TI Intra-fuel cell stack measurements of transient concentration distributions SO JOURNAL OF POWER SOURCES LA English DT Article DE in situ measurements; in-operando measurements; intra-fuel-cell measurements; PEMFC; SOFC; humidity ID STORAGE-REDUCTION CATALYST; REGENERATION; SYSTEM AB Intra-fuel-cell measurements are required to understand detailed fuel-cell chemistry and physics, validate models, optimize system design and control, and realize enhanced efficiency regimes; in comparison, conventional integrated fuel-cell supply and effluent measurements are fundamentally limited in value. Intra-reactor measurements are needed for all fuel cell types. This paper demonstrates the ability of a capillary-inlet mass spectrometer to resolve transient species distributions within operating polymer-electrolyte-membrane (PEM) fuel cells and at temperatures typical of solid-oxide fuel cells (SOFC). This is the first such demonstration of a diagnostic that is sufficiently minimally invasive as to allow measurements throughout an operating fuel cell stack. Measurements of transient water, hydrogen, oxygen and diluent concentration dynamics associated with fuel-cell load switching suggest oxygen-limited chemistry. Intra-PEM fuel cell measurements of oxygen distribution at various fuel-cell loads are used to demonstrate concentration gradients, non-uniformities, and anomalous fuel cell operation. (c) 2006 Elsevier B.V. All rights reserved. C1 Oak Ridge Natl Lab, Knoxville, TN 37932 USA. RP Partridge, WP (reprint author), Oak Ridge Natl Lab, 2360 Cherahala Blvd, Knoxville, TN 37932 USA. EM partridgewp@ornl.gov RI Green, Johney/B-3391-2017 OI Green, Johney/0000-0003-2383-7260 NR 18 TC 16 Z9 18 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 29 PY 2006 VL 160 IS 1 BP 454 EP 461 DI 10.1016/j.jpowsour.2006.01.016 PG 8 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 091ZQ UT WOS:000241067200059 ER PT J AU Oh, SW Park, SH Amine, K Sun, YK AF Oh, Sung Woo Park, Sang-Ho Amine, K. Sun, Yang-Kook TI Synthesis and characterization of spherical morphology [Ni0.4Co0.2Mn0.4](3)O-4 materials for lithium secondary batteries SO JOURNAL OF POWER SOURCES LA English DT Article DE lithium secondary batteries; spray pyrolysis; positive materials; layered materials; electrochemical properties ID ULTRASONIC SPRAY-PYROLYSIS; ION BATTERIES; PARTICLES; CATHODE; LIMNO2 AB Spherical morphology [Ni0.4Co0.2Mn0.4](3)O-4 materials have been synthesized by ultrasonic spray pyrolysis. The Li[Ni(0.4)ACo(0.2)Mn(0.4)]O-2 powders were prepared at various pyrolysis temperatures between 500 and 900 degrees C. The Li[Ni0.4Co0.2Mn0.4]O-2 material prepared at a pyrolysis temperature of 600 degrees C samples are exhibited excellent electrochemical cycling performance and delivered the highest discharge capacity at over 180 mAh g(-1) between 2.8 and 4.4 V. The structural, electrochemical, morphological property and thermal stability of the powders were characterized by X-ray diffraction (XRD), galvanostatic charge/discharge testing, scanning electron microscopy (SEM), and differential scanning calorimeter (DSC), respectively. (c) 2006 Elsevier B.V. All rights reserved. C1 Hanyang Univ, Dept Chem Engn, Ctr Informat & Commun Mat, Seoul 133791, South Korea. Argonne Natl Lab, Argonne, IL 60439 USA. RP Sun, YK (reprint author), Hanyang Univ, Dept Chem Engn, Ctr Informat & Commun Mat, Seoul 133791, South Korea. EM yksun@hanyang.ac.kr RI Sun, Yang-Kook/B-9157-2013; Amine, Khalil/K-9344-2013 OI Sun, Yang-Kook/0000-0002-0117-0170; NR 12 TC 13 Z9 13 U1 0 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 29 PY 2006 VL 160 IS 1 BP 558 EP 562 DI 10.1016/j.jpowsour.2006.01.023 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 091ZQ UT WOS:000241067200074 ER PT J AU Abelev, BI Aggarwal, MM Ahammed, Z Amonett, J Anderson, BD Anderson, M Arkhipkin, D Averichev, GS Bai, Y Balewski, J Barannikova, O Barnby, LS Baudot, J Bekele, S Belaga, VV Bellingeri-Laurikainen, A Bellwied, R Benedosso, F Bhardwaj, S Bhasin, A Bhati, AK Bichsel, H Bielcik, J Bielcikova, J Bland, LC Blyth, SL Bonner, BE Botje, M Bouchet, J Brandin, AV Bravar, A Burton, TP Bystersky, M Cadman, RV Cai, XZ Caines, H Sanchez, MCDLB Castillo, J Catu, O Cebra, D Chajecki, Z Chaloupka, P Chattopadhyay, S Chen, HF Chen, JH Cheng, J Cherney, M Chikanian, A Christie, W Coffin, JP Cormier, TM Cosentino, MR Cramer, JG Crawford, HJ Das, D Das, S Dash, S Daugherity, M de Moura, MM Dedovich, TG DePhillips, M Derevschikov, AA Didenko, L Dietel, T Djawotho, P Dogra, SM Dong, WJ Dong, X Draper, JE Du, F Dunin, VB Dunlop, JC Mazumdar, MRD Eckardt, V Edwards, WR Efimov, LG Emelianov, V Engelage, J Eppley, G Erazmus, B Estienne, M Fachini, P Fatemi, R Fedorisin, J Filimonov, K Filip, P Finch, E Fine, V Fisyak, Y Fu, J Gagliardi, CA Gaillard, L Ganti, MS Gaudichet, L Ghazikhanian, V Ghosh, P Gonzalez, JE Gorbunov, YG Gos, H Grebenyuk, O Grosnick, D Guertin, SM Guimaraes, KSFF Gupta, N Gutierrez, TD Haag, B Hallman, TJ Hamed, A Harris, JW He, W Heinz, M Henry, TW Hepplemann, S Hippolyte, B Hirsch, A Hjort, E Hoffman, AM Hoffmann, GW Horner, MJ Huang, HZ Huang, SL Hughes, EW Humanic, TJ Igo, G Jacobs, P Jacobs, WW Jakl, P Jia, F Jiang, H Jones, PG Judd, EG Kabana, S Kang, K Kapitan, J Kaplan, M Keane, D Kechechyan, A Khodyrev, VY Kim, BC Kiryluk, J Kisiel, A Kislov, EM Klein, SR Kocoloski, A Koetke, DD Kollegger, T Kopytine, M Kotchenda, L Kouchpil, V Kowalik, KL Kramer, M Kravtsov, P Kravtsov, VI Krueger, K Kuhn, C Kulikov, AI Kumar, A Kuznetsov, AA Lamont, MAC Landgraf, JM Lange, S LaPointe, S Laue, F Lauret, J Lebedev, A Lednicky, R Lee, CH Lehocka, S LeVine, MJ Li, C Li, Q Li, Y Lin, G Lin, X Lindenbaum, SJ Lisa, MA Liu, F Liu, H Liu, J Liu, L Liu, Z Ljubicic, T Llope, WJ Long, H Longacre, RS Love, WA Lu, Y Ludlam, T Lynn, D Ma, GL Ma, JG Ma, YG Magestro, D Mahapatra, DP Majka, R Mangotra, LK Manweiler, R Margetis, S Markert, C Martin, L Matis, HS Matulenko, YA McClain, CJ McShane, TS Melnick, Y Meschanin, A Millane, J Miller, ML Minaev, NG Mioduszewski, S Mironov, C Mischke, A Mishra, DK Mitchell, J Mohanty, B Molnar, L Moore, CF Morozov, DA Munhoz, MG Nandi, BK Nattrass, C Nayak, TK Nelson, JM Netrakanti, PK Nogach, LV Nurushev, SB Odyniec, G Ogawa, A Okorokov, V Oldenburg, M Olson, D Pachr, M Pal, SK Panebratsev, Y Panitkin, SY Pavlinov, AI Pawlak, T Peitzmann, T Perevoztchikov, V Perkins, C Peryt, W Phatak, SC Picha, R Planinic, M Pluta, J Poljak, N Porile, N Porter, J Poskanzer, AM Potekhin, M Potrebenikova, E Potukuchi, BVKS Prindle, D Pruneau, C Putschke, J Rakness, G Raniwala, R Raniwala, S Ray, RL Razin, SV Reinnarth, J Relyea, D Retiere, F Ridiger, A Ritter, HG Roberts, JB Rogachevskiy, OV Romero, JL Rose, A Roy, C Ruan, L Russcher, MJ Sahoo, R Sakuma, T Salur, S Sandweiss, J Sarsour, M Sazhin, PS Schambach, J Scharenberg, RP Schmitz, N Schweda, K Seger, J Selyuzhenkov, I Seyboth, P Shabetai, A Shahaliev, E Shao, M Sharma, M Shen, WQ 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 Sumbera, M Sun, Z Surrow, B Swanger, M Symons, TJM de Toledo, AS Tai, A Takahashi, J Tang, AH Tarnowsky, T Thein, D Thomas, JH Timmins, AR Timoshenko, S Tokarev, M Trainor, TA Trentalange, S Tribble, RE Tsai, OD Ulery, J Ullrich, T Underwood, DG Van Buren, G van der Kolk, N van Leeuwen, M Molen, AMV Varma, R Vasilevski, IM Vasiliev, AN Vernet, R Vigdor, SE Viyogi, YP Vokal, S Voloshin, SA Waggoner, WT Wang, F Wang, G Wang, JS Wang, XL Wang, Y Watson, JW Webb, JC Westfall, GD Wetzler, A Whitten, C Wieman, H Wissink, SW Witt, R Wood, J Wu, J Xu, N Xu, QH Xu, Z Yepes, P Yoo, K Yurevich, I Zhan, W Zhang, H Zhang, WM Zhang, Y Zhang, ZP Zhao, Y Zhong, C Zoulkarneev, R Zoulkarneeva, Y Zubarev, AN Zuo, JX AF Abelev, B. I. Aggarwal, M. M. Ahammed, Z. Amonett, J. Anderson, B. D. Anderson, M. Arkhipkin, D. Averichev, G. S. Bai, Y. Balewski, J. Barannikova, O. Barnby, L. S. Baudot, J. Bekele, S. Belaga, V. V. Bellingeri-Laurikainen, A. Bellwied, R. Benedosso, F. Bhardwaj, S. Bhasin, A. Bhati, A. K. Bichsel, H. Bielcik, J. Bielcikova, J. Bland, L. C. Blyth, S-L. Bonner, B. E. Botje, M. Bouchet, J. Brandin, A. V. Bravar, A. Burton, T. P. Bystersky, M. Cadman, R. V. Cai, X. Z. Caines, H. Calderon de la Barca Sanchez, M. Castillo, J. Catu, O. Cebra, D. Chajecki, Z. Chaloupka, P. Chattopadhyay, S. Chen, H. F. Chen, J. H. Cheng, J. Cherney, M. Chikanian, A. Christie, W. Coffin, J. P. Cormier, T. M. Cosentino, M. R. Cramer, J. G. Crawford, H. J. Das, D. Das, S. Dash, S. Daugherity, M. de Moura, M. M. Dedovich, T. G. DePhillips, M. Derevschikov, A. A. Didenko, L. Dietel, T. Djawotho, P. Dogra, S. M. Dong, W. J. Dong, X. Draper, J. E. Du, F. Dunin, V. B. Dunlop, J. C. Mazumdar, M. R. Dutta Eckardt, V. Edwards, W. R. Efimov, L. G. Emelianov, V. Engelage, J. Eppley, G. Erazmus, B. Estienne, M. Fachini, P. Fatemi, R. Fedorisin, J. Filimonov, K. Filip, P. Finch, E. Fine, V. Fisyak, Y. Fu, J. Gagliardi, C. A. Gaillard, L. Ganti, M. S. Gaudichet, L. Ghazikhanian, V. Ghosh, P. Gonzalez, J. E. Gorbunov, Y. G. Gos, H. Grebenyuk, O. Grosnick, D. Guertin, S. M. Guimaraes, K. S. F. F. Gupta, N. Gutierrez, T. D. Haag, B. Hallman, T. J. Hamed, A. Harris, J. W. He, W. Heinz, M. Henry, T. W. Hepplemann, S. Hippolyte, B. Hirsch, A. Hjort, E. Hoffman, A. M. Hoffmann, G. W. Horner, M. J. Huang, H. Z. Huang, S. L. Hughes, E. W. Humanic, T. J. Igo, G. Jacobs, P. Jacobs, W. W. Jakl, P. Jia, F. Jiang, H. Jones, P. G. Judd, E. G. Kabana, S. Kang, K. Kapitan, J. Kaplan, M. Keane, D. Kechechyan, A. Khodyrev, V. Yu. Kim, B. C. Kiryluk, J. Kisiel, A. Kislov, E. M. Klein, S. R. Kocoloski, A. Koetke, D. D. Kollegger, T. Kopytine, M. Kotchenda, L. Kouchpil, V. Kowalik, K. L. Kramer, M. Kravtsov, P. Kravtsov, V. I. Krueger, K. Kuhn, C. Kulikov, A. I. Kumar, A. Kuznetsov, A. A. Lamont, M. A. C. Landgraf, J. M. Lange, S. LaPointe, S. Laue, F. Lauret, J. Lebedev, A. Lednicky, R. Lee, C-H. Lehocka, S. LeVine, M. J. Li, C. Li, Q. Li, Y. Lin, G. Lin, X. Lindenbaum, S. J. Lisa, M. A. Liu, F. Liu, H. Liu, J. Liu, L. Liu, Z. Ljubicic, T. Llope, W. J. Long, H. Longacre, R. S. Love, W. A. Lu, Y. Ludlam, T. Lynn, D. Ma, G. L. Ma, J. G. Ma, Y. G. Magestro, D. Mahapatra, D. P. Majka, R. Mangotra, L. K. Manweiler, R. Margetis, S. Markert, C. Martin, L. Matis, H. S. Matulenko, Yu. A. McClain, C. J. McShane, T. S. Melnick, Yu. Meschanin, A. Millane, J. Miller, M. L. Minaev, N. G. Mioduszewski, S. Mironov, C. Mischke, A. Mishra, D. K. Mitchell, J. Mohanty, B. Molnar, L. Moore, C. F. Morozov, D. A. Munhoz, M. G. Nandi, B. K. Nattrass, C. Nayak, T. K. Nelson, J. M. Netrakanti, P. K. Nogach, L. V. Nurushev, S. B. Odyniec, G. Ogawa, A. Okorokov, V. Oldenburg, M. Olson, D. Pachr, M. Pal, S. K. Panebratsev, Y. Panitkin, S. Y. Pavlinov, A. I. Pawlak, T. Peitzmann, T. Perevoztchikov, V. Perkins, C. Peryt, W. Phatak, S. C. Picha, R. Planinic, M. Pluta, J. Poljak, N. Porile, N. Porter, J. Poskanzer, A. M. Potekhin, M. Potrebenikova, E. Potukuchi, B. V. K. S. Prindle, D. Pruneau, C. Putschke, J. Rakness, G. Raniwala, R. Raniwala, S. Ray, R. L. Razin, S. V. Reinnarth, J. Relyea, D. Retiere, F. Ridiger, A. Ritter, H. G. Roberts, J. B. Rogachevskiy, O. V. Romero, J. L. Rose, A. Roy, C. Ruan, L. Russcher, M. J. Sahoo, R. Sakuma, T. Salur, S. Sandweiss, J. Sarsour, M. Sazhin, P. S. Schambach, J. Scharenberg, R. P. Schmitz, N. Schweda, K. Seger, J. Selyuzhenkov, I. Seyboth, P. Shabetai, A. Shahaliev, E. Shao, M. Sharma, M. Shen, W. Q. Shimanskiy, S. S. Sichtermann, E. Simon, F. Singaraju, R. N. Smirnov, N. Snellings, R. Sood, G. Sorensen, P. Sowinski, J. Speltz, J. Spinka, H. M. Srivastava, B. Stadnik, A. Stanislaus, T. D. S. Stock, R. Stolpovsky, A. Strikhanov, M. Stringfellow, B. Suaide, A. A. P. Sugarbaker, E. Sumbera, M. Sun, Z. Surrow, B. Swanger, M. Symons, T. J. M. de Toledo, A. Szanto Tai, A. Takahashi, J. Tang, A. H. Tarnowsky, T. Thein, D. Thomas, J. H. Timmins, A. R. Timoshenko, S. Tokarev, M. Trainor, T. A. Trentalange, S. Tribble, R. E. Tsai, O. D. Ulery, J. Ullrich, T. Underwood, D. G. Van Buren, G. van der Kolk, N. van Leeuwen, M. Molen, A. M. Vander Varma, R. Vasilevski, I. M. Vasiliev, A. N. Vernet, R. Vigdor, S. E. Viyogi, Y. P. Vokal, S. Voloshin, S. A. Waggoner, W. T. Wang, F. Wang, G. Wang, J. S. Wang, X. L. Wang, Y. Watson, J. W. Webb, J. C. Westfall, G. D. Wetzler, A. Whitten, C., Jr. Wieman, H. Wissink, S. W. Witt, R. Wood, J. Wu, J. Xu, N. Xu, Q. H. Xu, Z. Yepes, P. Yoo, K. Yurevich, I. Zhan, W. Zhang, H. Zhang, W. M. Zhang, Y. Zhang, Z. P. Zhao, Y. Zhong, C. Zoulkarneev, R. Zoulkarneeva, Y. Zubarev, A. N. Zuo, J. X. CA STAR Collaboration TI Strange baryon resonance production in root s(NN)=200 GeV p+p and Au+Au collisions SO PHYSICAL REVIEW LETTERS LA English DT Article ID HEAVY-ION COLLISIONS; FREEZE-OUT; HADRONIZATION; AU AB We report the measurements of Sigma(1385) and Lambda(1520) production in p+p and Au+Au collisions at root s(NN)=200 GeV from the STAR Collaboration. The yields and the p(T) spectra are presented and discussed in terms of chemical and thermal freeze-out conditions and compared to model predictions. Thermal and microscopic models do not adequately describe the yields of all the resonances produced in central Au+Au collisions. Our results indicate that there may be a time span between chemical and thermal freeze-out during which elastic hadronic interactions occur. C1 Yale Univ, New Haven, CT 06520 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Birmingham, Birmingham, W Midlands, England. Brookhaven Natl Lab, Upton, NY 11973 USA. CALTECH, Pasadena, CA 91125 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Los Angeles, Los Angeles, CA 90095 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Univ Illinois, Chicago, IL 60680 USA. Creighton Univ, Omaha, NE 68178 USA. AS CR, Inst Phys Nucl, Rez 25068, Czech Republic. JINR, Lab High Energy, Dubna, Russia. Joint Inst Nucl Res Dubna, 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. Inst Modern Phys, Lanzhou, Peoples R China. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. MIT, Cambridge, MA 02139 USA. Max Planck Inst Phys & Astrophys, Munich, Germany. Michigan State Univ, E Lansing, MI 48824 USA. Moscow Phys Engn Inst, Moscow, Russia. CUNY City Coll, New York, NY 10031 USA. NIKHEF H, NL-1009 DB Amsterdam, Netherlands. Univ Utrecht, NL-3508 TC Utrecht, 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. Pusan Natl Univ, Pusan 609735, South Korea. Univ Rajasthan, Jaipur 302004, Rajasthan, India. Rice Univ, Houston, TX 77251 USA. Univ Sao Paulo, Sao Paulo, Brazil. Univ Sci & Technol China, Hefei 230026, 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, PL-00661 Warsaw, Poland. Univ Washington, Seattle, WA 98195 USA. Wayne State Univ, Detroit, MI 48201 USA. HZNU, CCNU, Inst Particle Phys, Wuhan, Peoples R China. Univ Zagreb, HR-10002 Zagreb, Croatia. RP Abelev, BI (reprint author), Yale Univ, New Haven, CT 06520 USA. RI Chaloupka, Petr/E-5965-2012; Nattrass, Christine/J-6752-2016; Cosentino, Mauro/L-2418-2014; Suaide, Alexandre/L-6239-2016; van der Kolk, Naomi/M-9423-2016; Inst. of Physics, Gleb Wataghin/A-9780-2017; Okorokov, Vitaly/C-4800-2017; Ma, Yu-Gang/M-8122-2013; Dogra, Sunil /B-5330-2013; Fornazier Guimaraes, Karin Silvia/H-4587-2016; Castillo Castellanos, Javier/G-8915-2013; Voloshin, Sergei/I-4122-2013; Planinic, Mirko/E-8085-2012; Takahashi, Jun/B-2946-2012; Barnby, Lee/G-2135-2010; Mischke, Andre/D-3614-2011; Witt, Richard/H-3560-2012; Lednicky, Richard/K-4164-2013; Sumbera, Michal/O-7497-2014; Strikhanov, Mikhail/P-7393-2014; Lee, Chang-Hwan/B-3096-2015; OI Nattrass, Christine/0000-0002-8768-6468; Cosentino, Mauro/0000-0002-7880-8611; Suaide, Alexandre/0000-0003-2847-6556; van der Kolk, Naomi/0000-0002-8670-0408; 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; Fornazier Guimaraes, Karin Silvia/0000-0003-0578-9533; Castillo Castellanos, Javier/0000-0002-5187-2779; Takahashi, Jun/0000-0002-4091-1779; Barnby, Lee/0000-0001-7357-9904; Sumbera, Michal/0000-0002-0639-7323; Strikhanov, Mikhail/0000-0003-2586-0405; Lee, Chang-Hwan/0000-0003-3221-1171; van Leeuwen, Marco/0000-0002-5222-4888 NR 28 TC 46 Z9 46 U1 0 U2 5 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 29 PY 2006 VL 97 IS 13 AR 132301 DI 10.1103/PhysRevLett.97.132301 PG 6 WC Physics, Multidisciplinary SC Physics GA 089HZ UT WOS:000240872700017 ER PT J AU Bentley, MA Chandler, C Taylor, MJ Brown, JR Carpenter, MP Davids, C Ekman, J Freeman, SJ Garrett, PE Hammond, G Janssens, RVF Lenzi, SM Lister, CJ Du Rietz, R Seweryniak, D AF Bentley, M. A. Chandler, C. Taylor, M. J. Brown, J. R. Carpenter, M. P. Davids, C. Ekman, J. Freeman, S. J. Garrett, P. E. Hammond, G. Janssens, R. V. F. Lenzi, S. M. Lister, C. J. du Rietz, R. Seweryniak, D. TI Isospin symmetry of odd-odd mirror nuclei: Identification of excited states in N=Z-2 Mn-48 SO PHYSICAL REVIEW LETTERS LA English DT Article ID SHELL; ENERGIES AB Excited states have been observed in the N=Z-2 odd-odd nucleus Mn-48 for the first time. Through comparison with the structure of V-48, a first high-spin study of an odd-odd mirror pair has been achieved. Differences between the T=1 analogue states in this pair have been interpreted in terms of Coulomb effects, with the aid of shell-model calculations in the full pf valence space. Unlike other mirror pairs, the energy differences have been interpreted almost entirely as due to a monopole effect associated with smooth changes in radius (or deformation) as a function of angular momentum. In addition, the large energy shift between analogue negative-parity states is interpreted in terms of the electromagnetic spin-orbit interaction in nuclei. C1 Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England. Univ Keele, Sch Chem & Phys, Keele ST5 5BG, Staffs, England. Argonne Natl Lab, Argonne, IL 60439 USA. Lund Univ, Dept Phys, S-22100 Lund, Sweden. Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England. Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. Univ Padua, Dipartimento Fis, I-35131 Padua, Italy. Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. RP Bentley, MA (reprint author), Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England. RI Freeman, Sean/B-1280-2010; Lenzi, Silvia/I-6750-2012; Ekman, Jorgen/C-1385-2013; du Rietz, Rickard/I-3794-2013; Carpenter, Michael/E-4287-2015; Taylor, Michael/N-1725-2015 OI Freeman, Sean/0000-0001-9773-4921; du Rietz, Rickard/0000-0002-9884-9058; Carpenter, Michael/0000-0002-3237-5734; Taylor, Michael/0000-0002-8718-3684 NR 16 TC 14 Z9 14 U1 0 U2 3 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 29 PY 2006 VL 97 IS 13 AR 132501 DI 10.1103/PhysRevLett.97.132501 PG 4 WC Physics, Multidisciplinary SC Physics GA 089HZ UT WOS:000240872700018 PM 17026028 ER PT J AU Gurevich, A Vinokur, VM AF Gurevich, A. Vinokur, V. M. TI Phase textures induced by dc-current pair breaking in weakly coupled multilayer structures and two-gap superconductors SO PHYSICAL REVIEW LETTERS LA English DT Article ID MAGNESIUM DIBORIDE AB We predict the current-induced formation of equilibrium phase textures for a multicomponent superconducting order parameter. Using the two-component Ginzburg-Landau and Usadel equations, we show that, for weakly coupled comoving superconducting condensates, the dc current I first causes the breakdown of the phase-locked state at I > I-c1 followed by the formation of intrinsic phase textures well below the depairing current I-d. These phase textures can manifest themselves in multilayer structures, atomic Bose condensate mixtures in optical lattices, and two-gap superconductors, particularly MgB2, where they can result in oscillating and resistive switching effects. C1 Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. Argonne Natl Lab, Div Sci Mat, Argonne, IL 60439 USA. RP Gurevich, A (reprint author), Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. RI Gurevich, Alex/A-4327-2008 OI Gurevich, Alex/0000-0003-0759-8941 NR 23 TC 28 Z9 28 U1 1 U2 9 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 29 PY 2006 VL 97 IS 13 AR 137003 DI 10.1103/PhysRevLett.97.137003 PG 4 WC Physics, Multidisciplinary SC Physics GA 089HZ UT WOS:000240872700055 PM 17026065 ER PT J AU Inomoto, M Gerhardt, SP Yamada, M Ji, HT Belova, E Kuritsyn, A Ren, Y AF Inomoto, Michiaki Gerhardt, Stefan P. Yamada, Masaaki Ji, Hantao Belova, Elena Kuritsyn, Aleksey Ren, Yang TI Coupling between global geometry and the local hall effect leading to reconnection-layer symmetry breaking SO PHYSICAL REVIEW LETTERS LA English DT Article ID COLLISIONLESS MAGNETIC RECONNECTION; LABORATORY PLASMA; SIMULATIONS; CONFIGURATION; ACCELERATION AB The coupling between the global reconnection geometry and the local microphysics, caused by the Hall effect, is studied during counterhelicity plasma merging in the magnetic reconnection experiment. The structure of the reconnection layer is significantly modified by reversing the sign of the toroidal fields, which affects the manifestation of the Hall effect in the collisionless regime. The local two-fluids physics changes the global boundary conditions, and this combination effect consequently provides different reconnection rates, magnetic field structure, and plasma flow patterns for two different counterhelicity merging cases in the collisionless regime. C1 Princeton Univ, Plasma Phys Lab, Ctr Magnet Selforg Lab & Astrophys Plasmas, Princeton, NJ 08543 USA. RP Inomoto, M (reprint author), Princeton Univ, Plasma Phys Lab, Ctr Magnet Selforg Lab & Astrophys Plasmas, POB 451, Princeton, NJ 08543 USA. RI Yamada, Masaaki/D-7824-2015 OI Yamada, Masaaki/0000-0003-4996-1649 NR 24 TC 9 Z9 10 U1 1 U2 1 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 29 PY 2006 VL 97 IS 13 AR 135002 DI 10.1103/PhysRevLett.97.135002 PG 4 WC Physics, Multidisciplinary SC Physics GA 089HZ UT WOS:000240872700030 PM 17026040 ER PT J AU Li, CK Seguin, FH Frenje, JA Rygg, JR Petrasso, RD Town, RPJ Amendt, PA Hatchett, SP Landen, OL Mackinnon, AJ Patel, PK Smalyuk, VA Sangster, TC Knauer, JP AF Li, C. K. Seguin, F. H. Frenje, J. A. Rygg, J. R. Petrasso, R. D. Town, R. P. J. Amendt, P. A. Hatchett, S. P. Landen, O. L. Mackinnon, A. J. Patel, P. K. Smalyuk, V. A. Sangster, T. C. Knauer, J. P. TI Measuring E and B fields in laser-produced plasmas with monoenergetic proton radiography SO PHYSICAL REVIEW LETTERS LA English DT Article ID MAGNETIC-FIELDS; RHO-R; TARGETS; OMEGA AB Electromagnetic (E/B) fields generated by the interaction with plasmas of long-pulse, low-intensity laser beams relevant to inertial confinement fusion have been measured for the first time using novel monoenergetic proton radiography methods. High-resolution, time-gated radiography images of a plastic foil driven by a 10(14) W/cm(2) laser implied B fields of similar to 0.5 MG and E fields of similar to 1.5x10(8) V/m. Simulations of these experiments with LASNEX+LSP have been performed and are in overall (though not exact) agreement with the data both for field strengths and for spatial distributions; this is the first direct experimental test of the laser-generated B-field package in LASNEX. The experiments also demonstrated that laser phase plates substantially reduce medium-scale chaotic field structure. C1 MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. RP Li, CK (reprint author), MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA. RI Patel, Pravesh/E-1400-2011; MacKinnon, Andrew/P-7239-2014 OI MacKinnon, Andrew/0000-0002-4380-2906 NR 22 TC 95 Z9 100 U1 1 U2 22 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 29 PY 2006 VL 97 IS 13 AR 135003 DI 10.1103/PhysRevLett.97.135003 PG 4 WC Physics, Multidisciplinary SC Physics GA 089HZ UT WOS:000240872700031 PM 17026041 ER PT J AU Van Zeeland, MA Kramer, GJ Austin, ME Boivin, RL Heidbrink, WW Makowski, MA McKee, GR Nazikian, R Solomon, WM Wang, G AF Van Zeeland, M. A. Kramer, G. J. Austin, M. E. Boivin, R. L. Heidbrink, W. W. Makowski, M. A. McKee, G. R. Nazikian, R. Solomon, W. M. Wang, G. TI Radial structure of Alfven eigenmodes in the DIII-D tokamak through electron-cyclotron-emission measurements SO PHYSICAL REVIEW LETTERS LA English DT Article ID AXISYMMETRICAL TOROIDAL PLASMAS; JOINT EUROPEAN TORUS; PROFILE; DRIVEN AB The spatial structure of toroidal Alfven eigenmodes and reversed shear Alfven eigenmodes in DIII-D is obtained from electron-cyclotron-emission measurements. Peak measured temperature perturbations are of similar magnitude for both toroidal Alfven eigenmodes and reversed shear Alfven eigenmodes and found to be delta T-e/T-e approximate to 0.5%. Simultaneous measurements of density fluctuations using beam-emission spectroscopy indicate delta n(e)/n(e)approximate to 0.25%. Predictions of the measured temperature and density perturbation profiles as well as delta T-e/delta n(e) from the ideal magnetohydrodynamic code NOVA are in close agreement with experiment. C1 Oak Ridge Inst Sci Educ, Oak Ridge, TN 37831 USA. Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. Univ Texas, Inst Fus Studies, Austin, TX 78712 USA. Gen Atom Co, San Diego, CA 92186 USA. Univ Calif Irvine, Irvine, CA 92717 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Wisconsin, Madison, WI 53706 USA. Univ Calif Los Angeles, Los Angeles, CA 90095 USA. RP Van Zeeland, MA (reprint author), Oak Ridge Inst Sci Educ, POB 117, Oak Ridge, TN 37831 USA. EM vanzeeland@fusion.gat.com OI Solomon, Wayne/0000-0002-0902-9876 NR 23 TC 78 Z9 78 U1 1 U2 9 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 29 PY 2006 VL 97 IS 13 AR 135001 DI 10.1103/PhysRevLett.97.135001 PG 4 WC Physics, Multidisciplinary SC Physics GA 089HZ UT WOS:000240872700029 PM 17026039 ER PT J AU McGuire, JA Shen, YR AF McGuire, John A. Shen, Y. Ron TI Ultrafast vibrational dynamics at water interfaces SO SCIENCE LA English DT Article ID LIQUID WATER; TEMPERATURE-DEPENDENCE; REVERSE MICELLES; PHOTON-ECHO; ENERGY; SPECTROSCOPY; RELAXATION; H2O; MOLECULES; SURFACES AB Time-resolved sum-frequency vibrational spectroscopy permits the study of hitherto neglected ultrafast vibrational dynamics of neat water interfaces. Measurements on interfacial bonded OH stretch modes revealed relaxation behavior on sub-picosecond time scales in close resemblance to that of bulk water. Vibrational excitation is followed by spectral diffusion, vibrational relaxation, and thermalization in the hydrogen-bonding network. Dephasing of the excitation occurs in <= 100 femtoseconds. Population relaxation of the dangling OH stretch was found to have a time constant of 1.3 picoseconds, the same as that for excitation transfer between hydrogen-bonded and unbonded OH stretches of water molecules surrounded by acetone. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Shen, YR (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM yrshen@calmail.berkeley.edu RI McGuire, John/C-3380-2015 OI McGuire, John/0000-0002-0682-0953 NR 24 TC 147 Z9 147 U1 9 U2 100 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD SEP 29 PY 2006 VL 313 IS 5795 BP 1945 EP 1948 DI 10.1126/science.1131536 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 088SU UT WOS:000240832200046 PM 17008527 ER PT J AU Kraft, ML Weber, PK Longo, ML Hutcheon, ID Boxer, SG AF Kraft, Mary L. Weber, Peter K. Longo, Marjorie L. Hutcheon, Ian D. Boxer, Steven G. TI Phase separation of lipid membranes analyzed with high-resolution secondary ion mass spectrometry SO SCIENCE LA English DT Article ID ATOMIC-FORCE MICROSCOPY; FLUORESCENCE CORRELATION SPECTROSCOPY; DOMAIN FORMATION; CHOLESTEROL; BILAYERS; RAFTS; CELL; PHOSPHOLIPIDS; HEMAGGLUTININ; TRANSITIONS AB Lateral variations in membrane composition are postulated to play a central role in many cellular events, but it has been difficult to probe membrane composition and organization on length scales of tens to hundreds of nanometers. We present a high-resolution imaging secondary ion mass spectrometry technique to reveal the lipid distribution within a phase-separated membrane with a lateral resolution of similar to 100 nanometers. Quantitative information about the chemical composition within small lipid domains was obtained with the use of isotopic labels to identify each molecular species. Composition variations were detected within some domains. C1 Stanford Univ, Dept Chem, Stanford, CA 94305 USA. Lawrence Livermore Natl Lab, Glenn T Seaborg Inst, Livermore, CA 94551 USA. Lawrence Livermore Natl Lab, Biosecur & Nanosci Lab, Livermore, CA 94551 USA. Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. RP Boxer, SG (reprint author), Stanford Univ, Dept Chem, Stanford, CA 94305 USA. EM sboxer@stanford.edu FU NIGMS NIH HHS [GM06930] NR 35 TC 173 Z9 176 U1 5 U2 56 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD SEP 29 PY 2006 VL 313 IS 5795 BP 1948 EP 1951 DI 10.1126/science.1130279 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 088SU UT WOS:000240832200047 PM 17008528 ER PT J AU Azizi, AA Gelpi, E Yang, JW Rupp, B Godwin, AK Slater, C Slavc, I Lubec, G AF Azizi, Amedeo A. Gelpi, Ellen Yang, Jae-Won Rupp, Bernhard Godwin, Andrew K. Slater, Carolyn Slavc, Irene Lubec, Gert TI Mass spectrometric identification of serine hydrolase OVCA2 in the medulloblastoma cell line DAOY SO CANCER LETTERS LA English DT Article DE OVCA2; medulloblastoma; two-dimensional gel electrophoresis; mass-spectrometry; immunohistochemistry ID OVARIAN-CANCER; TUMOR-SUPPRESSOR; SUBCELLULAR-LOCALIZATION; ALLELIC LOSS; PROTEINS; PREDICTION; PROTEOMICS; SITES; SEQUENCE; POTENTIALS AB OVCA2 is a putative serine-hydrolase. Performing protein profiling in human tumour cell lines, OVCA2 was detected in DAOY medulloblastoma cells as a high abundance protein. The protein was unambiguously identified by 2D gel-electrophoresis and MALDI-MS and MS/MS, its presence was confirmed by western blotting. Immunohistochemistry revealed expression in medulloblastoma and predominantly in oligodendrocytes. Computational approaches predicted functional motifs and domains, interaction with apoptosis-related protein BAG and 3D structure. In addition to the presence of OVCA2 in medulloblastoma, it was furthermore detectable in three out of 10 human tumour cell-lines as a high abundance protein probably suggesting a role in the tumour biology. (c) 2005 Elsevier Ireland Ltd. All rights reserved. C1 Med Univ Vienna, Dept Pediat, A-1090 Vienna, Austria. Med Univ Vienna, Clin Inst Neurol, A-1090 Vienna, Austria. Lawrence Livermore Natl Lab, Biosci Div L448, Livermore, CA USA. Fox Chase Canc Ctr, Philadelphia, PA 19111 USA. RP Lubec, G (reprint author), Med Univ Vienna, Dept Pediat, Wahringer Gurtel 19-21, A-1090 Vienna, Austria. EM gert.lubec@meduniwien.ac.at OI Lubec, Gert/0000-0002-6333-9461 FU NIGMS NIH HHS [P50 GM62410] NR 52 TC 4 Z9 4 U1 0 U2 1 PU ELSEVIER IRELAND LTD PI CLARE PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND SN 0304-3835 J9 CANCER LETT JI Cancer Lett. PD SEP 28 PY 2006 VL 241 IS 2 BP 235 EP 249 DI 10.1016/j.canlet.2005.10.023 PG 15 WC Oncology SC Oncology GA 089VF UT WOS:000240908700009 PM 16368187 ER PT J AU Averkiev, BB Boldyrev, AI Li, X Wang, LS AF Averkiev, Boris B. Boldyrev, Alexander I. Li, Xi Wang, Lai-Sheng TI Planar nitrogen-doped aluminum clusters AlxN- (x=3-5) SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MOLECULAR-ORBITAL METHODS; VALENCE BASIS-SETS; COMBINED PHOTOELECTRON-SPECTROSCOPY; GAUSSIAN-BASIS SETS; AB-INITIO; ELECTRONIC-STRUCTURE; GENETIC-ALGORITHM; 2ND-ROW ELEMENTS; 1ST-ROW ELEMENTS; GREEN-FUNCTION AB The electronic and geometrical structures of three nitrogen-doped aluminum clusters, AlxN- (x=3-5), are investigated using photoelectron spectroscopy and ab initio calculations. Well-resolved photoelectron spectra have been obtained for the nitrogen-doped aluminum clusters at four photon energies (532, 355, 266, and 193 nm). Global minimum structure searches for AlxN- (x=3-5) and their corresponding neutrals are performed using several theoretical methods. Vertical electron detachment energies are calculated using three different methods for the lowest energy structures and low-lying isomers are compared with the experimental observations. Planar structures have been established for all the three AlxN- (x=3-5) anions from the joint experimental and theoretical studies. For Al5N-, a low-lying nonplanar isomer is also found to contribute to the experimental spectra, signifying the onset of two-dimensional to three-dimensional transition in nitrogen-doped aluminum clusters. The chemical bonding in all the planar clusters has been elucidated on the basis of molecular orbital and natural bond analyses. (c) 2006 American Institute of Physics. C1 Utah State Univ, Dept Chem & Biochem, Logan, UT 84322 USA. Washington State Univ, Dept Phys, Richland, WA 99354 USA. Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. RP Averkiev, BB (reprint author), Utah State Univ, Dept Chem & Biochem, 0300 Old Main Hill, 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 50 TC 24 Z9 24 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 28 PY 2006 VL 125 IS 12 AR 124305 DI 10.1063/1.2335449 PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 089JP UT WOS:000240877000016 PM 17014172 ER PT J AU Gan, ZT Grant, DJ Harrison, RJ Dixon, DA AF Gan, Zhengting Grant, Daniel J. Harrison, Robert J. Dixon, David A. TI The lowest energy states of the group-IIIA-group-VA heteronuclear diatomics: BN, BP, AlN, and AlP from full configuration interaction calculations SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID LOW-LYING STATES; ELECTRONIC STATES; WAVE-FUNCTIONS; BASIS-SETS; SPECTROSCOPY; BORON; MULTIREFERENCE; PERFORMANCE; MOLECULES; SPECTRUM AB Full configuration interaction (CI) calculations on the group-IIIA-group-VA diatomic molecules BN, BP, AlN, and AlP have been performed with the cc-pVTZ correlation-consistent basis set and compared to CCSD(T) calculations with the same basis set. The CCSD(T) calculations are good to better than 1 kcal/mol in comparison with the full CI results if the T-1 diagnostic is small and to within about 2 kcal/mol if the T-1 diagnostic is large. Inspection of the T-2 amplitudes shows that the simple T-1 diagnostic is providing useful insight into the quality of the starting wave function. The ground state of BN, BP, and AlN is predicted to be the (3)Pi and, for AlP, the ground state is predicted to be (3)Sigma(-). For all molecules except BP, there is an excited state within 1.1 kcal/mol of the ground state. The ordering of the state energies can be explained in terms of simple orbital and bonding models. The results provide little evidence for placing the pi orbital below the sigma orbital for the ground state of these heteronuclear diatomic molecules. (c) 2006 American Institute of Physics. C1 Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA. RP Gan, ZT (reprint author), Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. EM dadixon@bama.ua.edu NR 30 TC 28 Z9 31 U1 1 U2 10 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 28 PY 2006 VL 125 IS 12 AR 124311 DI 10.1063/1.2335446 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 089JP UT WOS:000240877000022 PM 17014178 ER PT J AU Kowalski, K AF Kowalski, Karol TI Excitation energies through the locally renormalized equation-of-motion formalism: Singles and doubles model SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID COUPLED-CLUSTER THEORY; EXCITED ELECTRONIC STATES; FULL CONFIGURATION-INTERACTION; MOLECULAR-ORBITAL THEORY; FREE-BASE PORPHIN; SAC-CI METHOD; BASIS-SETS; DYNAMIC POLARIZABILITIES; TRANSITION MOMENTS; RESPONSE FUNCTIONS AB The stationary conditions obtained from approximate coupled-cluster functional derived from the numerator-denominator connected expansion (NDC) [K. Kowalski and P. Piecuch, J. Chem. Phys. 122, 074107 (2005)] are employed to calculate the linear response of cluster amplitudes. A simple scheme that involves singly and doubly excited amplitudes, termed locally renormalized equation-of-motion approach with singles and doubles (LR-EOMCCSD), is compared with other excited-state methods that include up to two-body operators in the wave function expansion. In particular, the impact of the local denominators on the excitation energies is discussed in detail. Several benchmark calculations on the CH+, C-2, N-2, O-3, and ClOCl molecules are presented to illustrate the performance of the LR-EOMCCSD approach. (c) 2006 American Institute of Physics. C1 Pacific NW Natl Lab, Battelle, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. RP Kowalski, K (reprint author), Pacific NW Natl Lab, Battelle, William R Wiley Environm Mol Sci Lab, K8-91,POB 999, Richland, WA 99352 USA. EM karol.kowalski@pnl.gov NR 70 TC 5 Z9 5 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 28 PY 2006 VL 125 IS 12 AR 124101 DI 10.1063/1.2355491 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 089JP UT WOS:000240877000004 PM 17014160 ER PT J AU Petrik, NG Kavetsky, AG Kimmel, GA AF Petrik, Nikolay G. Kavetsky, Alexander G. Kimmel, Greg A. TI Electron-stimulated production of molecular oxygen in amorphous solid water on Pt(111): Precursor transport through the hydrogen bonding network SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID LOW-ENERGY ELECTRONS; GALILEAN SATELLITES; ICY SATELLITES; LIGHT-IONS; D2O ICE; RADIOLYSIS; PEROXIDE; FILMS; O-2; MORPHOLOGY AB The low-energy, electron-stimulated production of molecular oxygen from thin amorphous solid water (ASW) films adsorbed on Pt(111) is investigated. For ASW coverages less than similar to 60 ML, the O-2 electron-stimulated desorption (ESD) yield depends on coverage in a manner that is very similar to the H-2 ESD yield. In particular, both the O-2 and H-2 ESD yields have a pronounced maximum at similar to 20 ML due to reactions at the Pt/water interface. The O-2 yield is dose dependent and several precursors (OH, H2O2, and HO2) are involved in the O-2 production. Layered films of (H2O)-O-16 and (H2O)-O-18 are used to profile the spatial distribution of the electron-stimulated reactions leading to oxygen within the water films. Independent of the ASW film thickness, the final reactions leading to O-2 occur at or near the ASW/vacuum interface. However, for ASW coverages less than similar to 40 ML, the results indicate that dissociation of water molecules at the ASW/Pt interface contributes to the O-2 production at the ASW/vacuum interface presumably via the generation of OH radicals near the Pt substrate. The OH (or possibly OH-) segregates to the vacuum interface where it contributes to the reactions at that interface. The electron-stimulated migration of precursors to the vacuum interface occurs via transport through the hydrogen bond network of the ASW without motion of the oxygen atoms. A simple kinetic model of the nonthermal reactions leading to O-2, which was previously used to account for reactions in thick ASW films, is modified to account for the electron-stimulated migration of precursors. (c) 2006 American Institute of Physics. C1 Pacific NW Natl Lab, Fundamental Sci Directorate, Richland, WA 99352 USA. RP Petrik, NG (reprint author), VG Khlopin Radium Inst, 28 2nd Murinsky St, St Petersburg 197022, Russia. EM gregory.kimmel@pnl.gov RI Petrik, Nikolay/G-3267-2015; OI Petrik, Nikolay/0000-0001-7129-0752; Kimmel, Greg/0000-0003-4447-2440 NR 52 TC 25 Z9 25 U1 0 U2 10 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 28 PY 2006 VL 125 IS 12 AR 124702 DI 10.1063/1.2345367 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 089JP UT WOS:000240877000039 PM 17014195 ER PT J AU Pulkkinen, TI Ganushkina, NY Tanskanen, EI Kubyshkina, M Reeves, GD Thomsen, MF Russell, CT Singer, HJ Slavin, JA Gjerloev, J AF Pulkkinen, T. I. Ganushkina, N. Y. Tanskanen, E. I. Kubyshkina, M. Reeves, G. D. Thomsen, M. F. Russell, C. T. Singer, H. J. Slavin, J. A. Gjerloev, J. TI Magnetospheric current systems during stormtime sawtooth events SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID DAWN-DUSK ASYMMETRY; RING CURRENT; MAGNETIC-FIELD; TAIL CURRENT; GEOSYNCHRONOUS ORBIT; CURRENT SHEET; MODEL; DST; SPACECRAFT; EVOLUTION AB The sawtooth event period embedded in a storm interval on 2001-10-22 is analyzed using magnetic field modeling techniques. The model current systems show that sawtooth injections are associated with strong stretching of both the nightside and dusk-sector magnetic field prior to the injection and a partial disruption of that current at the time of the injection. The currents are strongest near geosynchronous distance and in the premidnight sector. The strong dusk-sector field stretching produces very fast proton drift speeds, which can explain the near-simultaneous occurrence of the injections over a wide local time sector. Comparison of sawtooth periods with nonstorm substorms indicates that the tail field behavior resembles that of nonstorm substorms, but that the consequences of the stretching/dipolarization cycle are different from nonstorm times. As the drifting protons during sawtooth events are mostly on open drift paths, the symmetric ring current is only slightly affected, while large variations are seen in the asymmetric ring current. The three-spacecraft magnetic field measurements together with the Dst index were sufficient to constrain the magnetic field model to give a reasonably accurate global magnetic field representation, as confirmed by an independent test using measurements not used in the fitting. Thus we conclude that the empirical modeling methods can be quite reliable in predicting the large-scale fields when suitable observations are available. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Finnish Meteorol Inst, FIN-00101 Helsinki, Finland. St Petersburg State Univ, St Petersburg 198504, Russia. Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA. NOAA, Space Environm Ctr, Boulder, CO 80305 USA. NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. RP Pulkkinen, TI (reprint author), Los Alamos Natl Lab, ISR-1,MS 466, Los Alamos, NM 87545 USA. EM tuija@lanl.gov; nataly.ganushkina@fmi.fi; eija.tanskanen@fmi.fi; kubysh@geo.phys.spbu.ru; reeves@lanl.gov; mthomsen@lanl.gov; ctrussel@igpp.ucla.edu; howard.singer@noaa.gov; james.a.slavin@nasa.gov; jesper.gjerloev@jhuapl.edu RI Pulkkinen, Tuija/D-8403-2012; Slavin, James/H-3170-2012; Kubyshkina, Marina/G-9436-2013; Ganushkina, Natalia/K-6314-2013; Reeves, Geoffrey/E-8101-2011 OI Pulkkinen, Tuija/0000-0002-6317-381X; Slavin, James/0000-0002-9206-724X; Kubyshkina, Marina/0000-0001-5897-9547; Reeves, Geoffrey/0000-0002-7985-8098 NR 33 TC 27 Z9 27 U1 0 U2 6 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 28 PY 2006 VL 111 IS A11 AR A11S17 DI 10.1029/2006JA011627 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 090KH UT WOS:000240949700001 ER PT J AU Filipiak, P Camaioni, DM Fessenden, RW Carmichael, I Hug, GL AF Filipiak, Piotr Camaioni, Donald M. Fessenden, Richard W. Carmichael, Ian Hug, Gordon L. TI Reactions of 1-hydroxy-1-methylethyl radicals with NO2-: Time-resolved electron spin resonance SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID SOLVATION FREE-ENERGIES; POLARIZABLE CONTINUUM MODEL; AQUEOUS-SOLUTION; PARAMAGNETIC-RESONANCE; PULSE-RADIOLYSIS; ORGANIC RADICALS; POTASSIUM AZIDE; NITRIC-OXIDE; ESR; EPR AB The reaction of the alpha-hydroxyalkyl radical of 2-propanol (1-hydroxy-1-methylethyl radical) with nitrite ions was characterized. A product of the reaction was assigned as the adduct nitro radical anion, [HO-C(CH3)(2)NO2](center dot-). This radical was identified using time-resolved electron spin resonance (TRESR). The radical's magnetic parameters, the nitrogen hyperfine coupling constant (a(N) = 26.39 G), and its g-factor (2.0052) were the same as those of the nitro radical anion previously discovered in (OH)-O-center dot spin-trapping experiments with the aci-anion of (CH3)(2)CHNO2. Production of [HO-C(CH3)(2)NO2](center dot-) was determined to be 38% +/- 4% of the reaction of (CH3)(2)C-center dot-OH with nitrite. The reason why this fraction was less than 100% was rationalized by invoking the competitive addition at oxygen, which forms [HO-C(CH3)(2)ONO](center dot-), followed by a rapid loss of (NO)-N-center dot. Furthermore, by taking this mechanism into account, the bimolecular rate constant for the total reaction of (CH3)(2)C-center dot-OH with nitrite at reaction pH 7 was determined to be 1.6 x 10(6) M-1 s(-1), using both decay traces of (CH3)(2)C-center dot-OH and growth traces of [HO-C(CH3)(2)NO2](center dot-). This correspondence further confirms the nature of the reaction. The reaction mechanism is discussed with guidance by computations using density functional theory. C1 Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. Adam Mickiewicz Univ, Fac Chem, PL-60780 Poznan, Poland. RP Hug, GL (reprint author), Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA. EM hug.1@nd.edu NR 49 TC 3 Z9 3 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD SEP 28 PY 2006 VL 110 IS 38 BP 11046 EP 11052 DI 10.1021/jp062398c PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 086DW UT WOS:000240654800014 PM 16986837 ER PT J AU Van Tassle, AJ Prantil, MA Fleming, GR AF Van Tassle, Aaron J. Prantil, Matthew A. Fleming, Graham R. TI Investigation of the excited state structure of DCM via ultrafast electronic pump/vibrational probe SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article; Proceedings Paper CT Festschrift in honor of the 65th Birthday of Robert J Silbey CY JUN 24-25, 2005 CL Cambridge, MA ID INTRAMOLECULAR-CHARGE-TRANSFER; SUBPICOSECOND TRANSIENT ABSORPTION; LIGHT-EMITTING DIODE; LASER-DYE DCM; RAMAN-SPECTROSCOPY; STYRENE DYE; 4-DIMETHYLAMINO 4'-CYANOSTILBENE; VIBRATIONAL SPECTROSCOPY; LUMINESCENT PROPERTIES; INFRARED-SPECTROSCOPY AB Time resolved visible pump, infrared probe transient absorption measurements of the solutes 4-dicyanomethylene-2-methyl-6-(p-(dimethylamino) styryl)-4H-pyran (DCM) and its isotopomer DCM-d(6) are employed to probe the dynamics of charge transfer state formation in dimethyl sulfoxide (DMSO) and acetonitrile (MeCN). We observe a two stage charge transfer (CT): the first step is an instrument-response-limited charge separation to the dicyanomethylene group, and the second involves a structural evolution of the dimethylamino group. Theoretical calculations and isotopic substitution indicate that the observed vibration is due to the dimethylamino group twisting out of plane, stabilizing the charge separation. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Fleming, GR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 49 TC 19 Z9 19 U1 1 U2 20 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD SEP 28 PY 2006 VL 110 IS 38 BP 18989 EP 18995 DI 10.1021/jp0603738 PG 7 WC Chemistry, Physical SC Chemistry GA 086DX UT WOS:000240654900034 PM 16986894 ER PT J AU Jang, S Newton, MD AF Jang, Seogjoo Newton, Marshall D. TI Closed-form expressions of quantum electron transfer rate based on the stationary-phase approximation SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article; Proceedings Paper CT Festschrift in honor of the 65th Birthday of Robert J Silbey CY JUN 24-25, 2005 CL Cambridge, MA ID FREE-ENERGY; ACCEPTOR MOLECULES; VARIATIONAL CALCULATION; BIOLOGICAL MOLECULES; CHARGE SEPARATION; REACTION CENTERS; FROZEN MEDIA; DYNAMICS; KINETICS; SYSTEM AB Closed-form rate expressions are derived on the basis of the stationary-phase approximation for the Fermi golden rule expression of the quantum electron-transfer ( ET) rate. First, on the basis of approximate solutions of the stationary-phase points near Delta G = 0, -lambda, and lambda, where Delta G is the reaction free energy and lambda is the reorganization energy, three closed-form rate expressions are derived, which are respectively valid near each value of Delta G. Numerical tests for a model Ohmic spectral density with an exponential cutoff demonstrate good performance of the derived expressions in the respective regions of their validity. In particular, the expression near Delta G = - lambda, which differs from the semiclassical approximation only by a prefactor quadratic in Delta G, works substantially better than the latter. Then, a unified formula is suggested, which interpolates the three approximate expressions and serves as a good approximation in all three regions. We have also demonstrated that the interpolation formula can serve as a good quantitative means for understanding the temperature dependence of the quantum ET rate. C1 CUNY Queens Coll, Grad Ctr, Dept Chem & Biochem, Flushing, NY 11367 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Jang, S (reprint author), CUNY Queens Coll, Grad Ctr, Dept Chem & Biochem, 65-30 Kissena Blvd, Flushing, NY 11367 USA. EM Seogjoo.Jang@qc.cuny.edu; newton@bnl.gov NR 60 TC 6 Z9 6 U1 4 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD SEP 28 PY 2006 VL 110 IS 38 BP 18996 EP 19003 DI 10.1021/jp061329v PG 8 WC Chemistry, Physical SC Chemistry GA 086DX UT WOS:000240654900035 PM 16986895 ER PT J AU Scully, SWJ Alvarez, I Cisneros, C Emmons, ED Gharaibeh, MF Leitner, D Lubell, MS Muller, A Phaneuf, RA Puttner, R Schlachter, AS Schippers, S Shi, W Ballance, CP McLaughlin, BM AF Scully, S. W. J. Alvarez, I. Cisneros, C. Emmons, E. D. Gharaibeh, M. F. Leitner, D. Lubell, M. S. Mueller, A. Phaneuf, R. A. Puettner, R. Schlachter, A. S. Schippers, S. Shi, W. Ballance, C. P. McLaughlin, B. M. TI Doubly excited resonances in the photoionization spectrum of Li+: experiment and theory SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID SHELL PHOTOIONIZATION; ELECTRON-IMPACT; HIGH-RESOLUTION; CROSS-SECTIONS; C2+ IONS; STATES; CLASSIFICATION; IONIZATION; LITHIUM; ATOMS AB Absolute cross-section measurements for resonant double photoexcitation of Li+ ions followed by autoionization have been performed at high resolution in the photon energy range from 148 eV, just below the (2s2p, (2)(0, 1)(n)(+)) resonance, to 198 eV (the region of the double ionization threshold). The measurements have been made using the photon-ion merged-beam endstation at the Advanced Light Source, Lawrence Berkeley National Laboratory, USA. The absolute cross-section measurements show excellent agreement with theoretical results from the R-matrix plus pseudo-state (RMPS) method. Comparisons between theory and experiment for the Auger resonance energies, autoionization linewidth (Gamma) and the Fano line profile index q for several members of the principal (2snp, (2)(0, 1)(n)(+)) and (3snp, (3)(1, 1)(n)(+)) Rydberg series found in the photoionization spectra for the P-1 degrees symmetry show satisfactory accord. C1 Univ Nevada, Dept Phys, Reno, NV 89557 USA. Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Cuernavaca 62131, Morelos, Mexico. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. CUNY City Coll, Dept Phys, New York, NY 10031 USA. Univ Giessen, Inst Atom & Mol Phys, D-35392 Giessen, Germany. Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany. Rollins Coll, Dept Phys, Winter Pk, FL 32789 USA. Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA. RP Scully, SWJ (reprint author), Queens Univ Belfast, Sch Phys & Mat, Belfast BT7 1NN, Antrim, North Ireland. EM b.mclaughlin@qub.ac.uk RI Muller, Alfred/A-3548-2009; Schippers, Stefan/A-7786-2008 OI Muller, Alfred/0000-0002-0030-6929; Schippers, Stefan/0000-0002-6166-7138 NR 31 TC 24 Z9 25 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-4075 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD SEP 28 PY 2006 VL 39 IS 18 BP 3957 EP 3968 DI 10.1088/0953-4075/39/18/024 PG 12 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 098XG UT WOS:000241555800025 ER PT J AU Li, QW DePaula, R Zhang, XF Zheng, LX Arendt, PN Mueller, FM Zhu, YT Tu, Y AF Li, Qingwen DePaula, Raymond Zhang, Xiefei Zheng, Lianxi Arendt, Paul N. Mueller, Fred M. Zhu, Y. T. Tu, Yi TI Drying induced upright sliding and reorganization of carbon nanotube arrays SO NANOTECHNOLOGY LA English DT Article ID FILMS AB Driven by capillary force, wet carbon nanotube (CNT) arrays have been found to reorganize into cellular structures upon drying. During the reorganization process, individual CNTs are firmly attached to the substrate and have to lie down on the substrate at cell bottoms, forming closed cells. Here we demonstrate that by modifying catalyst structures, the adhesion of CNTs to the substrate can be weakened. Upon drying such CNT arrays, CNTs may slide away from their original sites on the surface and self-assemble into cellular patterns with bottoms open. It is also found that the sliding distance of CNTs increases with array height, and drying millimetre tall arrays leads to the sliding of CNTs over a few hundred micrometres and the eventual self-assembly into discrete islands. By introducing regular vacancies in CNT arrays, CNTs may be manipulated into different patterns. C1 Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA. CVD Fist Nano, Ronkonkoma, NY 11779 USA. RP Zhu, YT (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, POB 1663, Los Alamos, NM 87545 USA. EM yzhu@lanl.gov RI Zhu, Yuntian/B-3021-2008; Zheng, Lianxi/A-3855-2011 OI Zhu, Yuntian/0000-0002-5961-7422; Zheng, Lianxi/0000-0003-4974-365X NR 12 TC 19 Z9 19 U1 1 U2 11 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0957-4484 J9 NANOTECHNOLOGY JI Nanotechnology PD SEP 28 PY 2006 VL 17 IS 18 BP 4533 EP 4536 DI 10.1088/0957-4484/17/18/001 PG 4 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 093GT UT WOS:000241157000001 PM 21727573 ER PT J AU Leonard, F Stewart, DA AF Leonard, Francois Stewart, Derek A. TI Properties of short channel ballistic carbon nanotube transistors with ohmic contacts SO NANOTECHNOLOGY LA English DT Article ID FIELD-EFFECT TRANSISTORS; SINGLE; DEVICES; GATE AB We present self-consistent, non-equilibrium Green's function calculations of the characteristics of short channel carbon nanotube transistors, focusing on the regime of ballistic transport with ohmic contacts. We first establish that the band line-up at the contacts is renormalized by charge transfer, leading to Schottky contacts for small diameter nanotubes and ohmic contacts for large diameter nanotubes, in agreement with recent experiments. For short channel ohmic contact devices, source-drain tunnelling and drain-induced barrier lowering significantly impact the current-voltage characteristics. Furthermore, the ON state conductance shows a temperature dependence, even in the absence of phonon scattering or Schottky barriers. This last result also agrees with recently reported experimental measurements. C1 Sandia Natl Labs, Livermore, CA 94551 USA. Cornell Nanoscale Sci & Technol Facil, Ithaca, NY 14853 USA. RP Leonard, F (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. EM fleonar@sandia.gov; stewart@cnf.cornell.edu RI Stewart, Derek/B-6115-2008; OI Stewart, Derek/0000-0001-7355-2605 NR 24 TC 17 Z9 17 U1 1 U2 10 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 SEP 28 PY 2006 VL 17 IS 18 BP 4699 EP 4705 DI 10.1088/0957-4484/17/18/029 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 093GT UT WOS:000241157000029 PM 21727600 ER PT J AU Beausejour, CM Campisi, J AF Beausejour, Christian M. Campisi, Judith TI Ageing - Balancing regeneration and cancer SO NATURE LA English DT Editorial Material ID STEM-CELL; P53 C1 Univ Montreal, Hop St Justine, Ctr Rech Pediat, Montreal, PQ H3T 1C5, Canada. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Buck Inst Age Res, Novato, CA USA. RP Beausejour, CM (reprint author), Univ Montreal, Hop St Justine, Ctr Rech Pediat, 3175 Chemin Cote St Catherine, Montreal, PQ H3T 1C5, Canada. EM jcampisi@lbl.gov NR 11 TC 72 Z9 79 U1 0 U2 4 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD SEP 28 PY 2006 VL 443 IS 7110 BP 404 EP 405 DI 10.1038/nature05221 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 088FY UT WOS:000240798800031 PM 16957734 ER PT J AU Dharmawardane, KV Kuhn, SE Bosted, P Prok, Y Adams, G Ambrozewicz, P Anghinolfi, M Asryan, G Avakian, H Bagdasaryan, H Baillie, N Ball, JP Baltzell, NA Barrow, S Batourine, V Battaglieri, M Beard, K Bedlinskiy, I Bektasoglu, M Bellis, M Benmouna, N Biselli, AS Bonner, BE Bouchigny, S Boiarinov, S Bradford, R Branford, D Brooks, WK Bultmann, S Burkert, VD Butuceanu, C Calarco, JR Careccia, SL Carman, DS Carnahan, B Cazes, A Chen, S Cole, PL Collins, P Coltharp, P Cords, D Corvisiero, P Crabb, D Crannell, H Crede, V Cummings, JP De Masi, R DeVita, R De Sanctis, E Degtyarenko, PV Denizli, H Dennis, L Deur, A Djalali, C Dodge, GE Donnelly, J Doughty, D Draigovitsch, P Dugger, M Dytman, S Dzyubak, OP Egiyan, H Egiyan, KS Elouadrhiri, L Eugenio, P Fatemi, R Fedotov, G Feuerbach, RJ Forest, TA Funsten, H Garcon, M Gavalian, G Gilfoyle, GP Giovanetti, KL Girod, FX Goetz, JT Golovatch, E Gonenc, A Gothe, RW Griffioen, KA Guidal, M Guillo, M Guler, N Guo, L Gyurjyan, V Hadjidakis, C Hafidi, K Hakobyan, RS Hardie, J Heddle, D Hersman, FW Hicks, K Hleiqawi, I Holtrop, M Huertas, M Hyde-Wriyht, CE Ilieva, Y Ireland, DG Ishkhanov, BS Isupov, EL Ito, MM Jenkins, D Jo, HS Joo, K Juengst, HG Keith, C Kellie, JD Khandaker, M Kim, KY Kim, K Kim, W Klein, A Klein, FJ Klusman, M Kossov, M Kramer, LH Kubarovsky, V Kuhn, J Kuleshov, SV Lachniet, J Laget, JM Langheinrich, J Lawrence, D Li, J Lima, ACS Livingston, K Lu, H Lukashin, K MacCormick, M Manak, JJ Markov, N McAleer, S McKinnon, B McNabb, JWC Mecking, BA Mestayer, MD Meyer, CA Mibe, T Mikhailov, K Minehart, R Mirazita, M Miskimen, R Mokeev, V Morand, L Morrow, SA Moteabbed, M Mueller, J Mutchler, GS Nadel-Turonski, P Napolitano, J Nasseripour, R Niccolai, S Niculescu, G Niculescu, I Niczyporuk, BB Niroula, MR Nyazov, RA Nozar, M O'Rielly, GV Osipenko, M Ostrovidov, AI Park, K Pasyuk, E Paterson, C Philips, SA Pierce, J Pivnyuk, N Pocanic, D Pogorelko, O Polli, E Pozdniakov, S Preedom, BM Price, JW Protopopescu, D Qin, LM Raue, BA Riccardi, G Ricco, G Ripani, M Ritchie, BG Ronchetti, F Rosner, G Rossi, P Rowntree, D Rubin, PD Sabatie, E Salgado, C Santoro, JP Sapunenko, V Schumacher, RA Serov, VS Sharabian, YG Shaw, J Shvedunov, NV Skabelin, AV Smith, ES Smith, LC Sober, DI Stavinsky, A Stepanyan, SS Stepanyan, S Stokes, BE Stoler, P Strakovsky, II Strauch, S Suleiman, R Taiuti, M Taylor, S Tedeschi, DJ Thoma, U Thompson, R Tkabladze, A Tkachenko, S Todor, L Tur, C Ungaro, M Vineyard, MF Vlassov, AV Weinstein, LB Weygand, DP Williams, M Wolin, E Wood, MH Yegneswaran, A Yun, J Zana, L Zhang, J Zhao, B Zhao, Z AF Dharmawardane, K. V. Kuhn, S. E. Bosted, P. Prok, Y. Adams, G. Ambrozewicz, P. Anghinolfi, M. Asryan, G. Avakian, H. Bagdasaryan, H. Baillie, N. Ball, J. P. Baltzell, N. A. Barrow, S. Batourine, V. Battaglieri, M. Beard, K. Bedlinskiy, I. Bektasoglu, M. Bellis, M. Benmouna, N. Biselli, A. S. Bonner, B. E. Bouchigny, S. Boiarinov, S. Bradford, R. Branford, D. Brooks, W. K. Bultmann, S. Burkert, V. D. Butuceanu, C. Calarco, J. R. Careccia, S. L. Carman, D. S. Carnahan, B. Cazes, A. Chen, S. Cole, P. L. Collins, P. Coltharp, P. Cords, D. Corvisiero, P. Crabb, D. Crannell, H. Crede, V. Cummings, J. P. De Masi, R. DeVita, R. De Sanctis, E. Degtyarenko, P. V. Denizli, H. Dennis, L. Deur, A. Djalali, C. Dodge, G. E. Donnelly, J. Doughty, D. Draigovitsch, P. Dugger, M. Dytman, S. Dzyubak, O. P. Egiyan, H. Egiyan, K. S. Elouadrhiri, L. Eugenio, P. Fatemi, R. Fedotov, G. Feuerbach, R. J. Forest, T. A. Funsten, H. Garcon, M. Gavalian, G. Gilfoyle, G. P. Giovanetti, K. L. Girod, F. X. Goetz, J. T. Golovatch, E. Gonenc, A. Gothe, R. W. Griffioen, K. A. Guidal, M. Guillo, M. Guler, N. Guo, L. Gyurjyan, V. Hadjidakis, C. Hafidi, K. Hakobyan, R. S. Hardie, J. Heddle, D. Hersman, F. W. Hicks, K. Hleiqawi, I. Holtrop, M. Huertas, M. Hyde-Wriyht, C. E. Ilieva, Y. Ireland, D. G. Ishkhanov, B. S. Isupov, E. L. Ito, M. M. Jenkins, D. Jo, H. S. Joo, K. Juengst, H. G. Keith, C. Kellie, J. D. Khandaker, M. Kim, K. Y. Kim, K. Kim, W. Klein, A. Klein, F. J. Klusman, M. Kossov, M. Kramer, L. H. Kubarovsky, V. Kuhn, J. Kuleshov, S. V. Lachniet, J. Laget, J. M. Langheinrich, J. Lawrence, D. Li, Ji Lima, A. C. S. Livingston, K. Lu, H. Lukashin, K. MacCormick, M. Manak, J. J. Markov, N. McAleer, S. McKinnon, B. McNabb, J. W. C. Mecking, B. A. Mestayer, M. D. Meyer, C. A. Mibe, T. Mikhailov, K. Minehart, R. Mirazita, M. Miskimen, R. Mokeev, V. Morand, L. Morrow, S. A. Moteabbed, M. Mueller, J. Mutchler, G. S. Nadel-Turonski, P. Napolitano, J. Nasseripour, R. Niccolai, S. Niculescu, G. Niculescu, I. Niczyporuk, B. B. Niroula, M. R. Nyazov, R. A. Nozar, M. O'Rielly, G. V. Osipenko, M. Ostrovidov, A. I. Park, K. Pasyuk, E. Paterson, C. Philips, S. A. Pierce, J. Pivnyuk, N. Pocanic, D. Pogorelko, O. Polli, E. Pozdniakov, S. Preedom, B. M. Price, J. W. Protopopescu, D. Qin, L. M. Raue, B. A. Riccardi, G. Ricco, G. Ripani, M. Ritchie, B. G. Ronchetti, F. Rosner, G. Rossi, P. Rowntree, D. Rubin, P. D. Sabatie, E. Salgado, C. Santoro, J. P. Sapunenko, V. Schumacher, R. A. Serov, V. S. Sharabian, Y. G. Shaw, J. Shvedunov, N. V. Skabelin, A. V. Smith, E. S. Smith, L. C. Sober, D. I. Stavinsky, A. Stepanyan, S. S. Stepanyan, S. Stokes, B. E. Stoler, P. Strakovsky, I. I. Strauch, S. Suleiman, R. Taiuti, M. Taylor, S. Tedeschi, D. J. Thoma, U. Thompson, R. Tkabladze, A. Tkachenko, S. Todor, L. Tur, C. Ungaro, M. Vineyard, M. F. Vlassov, A. V. Weinstein, L. B. Weygand, D. P. Williams, M. Wolin, E. Wood, M. H. Yegneswaran, A. Yun, J. Zana, L. Zhang, J. Zhao, B. Zhao, Z. CA CLAS Collaboration TI Measurement of the x- and Q(2)-dependence of the asymmetry A(1) on the nucleon SO PHYSICS LETTERS B LA English DT Article DE spin structure functions; nucleon structure ID NEUTRON SPIN STRUCTURE; DEEP-INELASTIC-SCATTERING; SUM-RULE; PROTON; DISTRIBUTIONS; G(1)(N); QUARK; CLAS; PION AB We report results for the virtual photon asymmetry A I on the nucleon from new Jefferson Lab measurements. The experiment, which used the CEBAF Large Acceptance Spectrometer and longitudinally polarized proton ((NH3)-N-15) and deuteron ((ND3)-N-15) targets, collected data with a longitudinally polarized electron beam at energies between 1.6 GeV and 5.7 GeV. In the present. Letter, we concentrate on our results for A(1) (x, Q(2)) and the related ratio g(1)/F-1 (x, Q(2))) in the resonance and the deep inelastic regions for our J west and highest beam energies, covering a range in momentum transfer Q(2) from 0.05 to 5.0 (GeV/c)(2) and in final-state invariant mass W up to about 3 GeV. Our data show detailed structure in the resonance re-ion, which leads to a strong Q(2) dependence of A(1) (x, Q(2)) to. W below 2 GeV. At higher W, a smooth approach to the scaling limit, established by earlier experiments, can be seen, but A I (x, Q(2)) is not strictly Q(2)-independent. We add significantly to the world data set at high x, up to x = 0.6. Our data exceed the SU(6)-symmetric quark model expectation for both the proton and the deuteron while being consistent with a negative d-quark polarization up to our highest x. This data set should improve next-to-leading order (NLO) pQCD fits of the parton polarization distributions. (c) 2006 Elsevier B.V.All rights reserved. C1 Rensselaer Polytech Inst, Troy, NY 12180 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Arizona State Univ, Tempe, AZ 85287 USA. Univ Calif Los Angeles, Los Angeles, CA 90095 USA. Calif State Univ Dominguez Hills, Carson, CA 90747 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Catholic Univ Amer, Washington, DC 20064 USA. CEA Saclay, Serv Phys Nucl, F-91191 Gif Sur Yvette, France. Christopher Newport Univ, Newport News, VA 23606 USA. Univ Connecticut, Storrs, CT 06269 USA. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Florida Int Univ, Miami, FL 33199 USA. Florida State Univ, Tallahassee, FL 32306 USA. George Washington Univ, Washington, DC 20052 USA. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Idaho State Univ, Pocatello, ID 83209 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. Inst Phys Nucl, F-91406 Orsay, France. Univ Bonn, Inst Strahlen & Kernphys, D-5300 Bonn, Germany. Inst Theoret & Expt Phys, Moscow 117259, Russia. James Madison Univ, Harrisonburg, VA 22807 USA. Kyungpook Natl Univ, Taegu 702701, South Korea. MIT, Cambridge, MA 02139 USA. Univ Massachusetts, Amherst, MA 01003 USA. Moscow MV Lomonosov State Univ, Gen Nucl Phys Inst, Moscow 119899, Russia. Univ New Hampshire, Durham, NH 03824 USA. Norfolk State Univ, Norfolk, VA 23504 USA. Ohio Univ, Athens, OH 45701 USA. Old Dominion Univ, Norfolk, VA 23529 USA. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Rice Univ, Houston, TX 77005 USA. Sakarya Univ, Sakarya, Turkey. Univ Richmond, Richmond, VA 23173 USA. Univ S Carolina, Columbia, SC 29208 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Union Coll, Schenectady, NY 12308 USA. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. Univ Virginia, Charlottesville, VA 22901 USA. Coll William & Mary, Williamsburg, VA 23187 USA. Yerevan Phys Inst, Yerevan 375036, Armenia. RP Kuhn, SE (reprint author), Rensselaer Polytech Inst, Troy, NY 12180 USA. EM skuhn@odu.edu RI Protopopescu, Dan/D-5645-2012; riccardi, gabriele/A-9269-2012; Zana, Lorenzo/H-3032-2012; Isupov, Evgeny/J-2976-2012; Ishkhanov, Boris/E-1431-2012; Zhao, Bo/J-6819-2012; Brooks, William/C-8636-2013; Kuleshov, Sergey/D-9940-2013; Schumacher, Reinhard/K-6455-2013; Meyer, Curtis/L-3488-2014; Ireland, David/E-8618-2010; Bektasoglu, Mehmet/A-2074-2012; Lu, Haiyun/B-4083-2012; Osipenko, Mikhail/N-8292-2015; Zhang, Jixie/A-1461-2016; Sabatie, Franck/K-9066-2015; OI Zhao, Bo/0000-0003-3171-5335; Brooks, William/0000-0001-6161-3570; Kuleshov, Sergey/0000-0002-3065-326X; Schumacher, Reinhard/0000-0002-3860-1827; Meyer, Curtis/0000-0001-7599-3973; Ireland, David/0000-0001-7713-7011; Osipenko, Mikhail/0000-0001-9618-3013; Sabatie, Franck/0000-0001-7031-3975; Sapunenko, Vladimir/0000-0003-1877-9043; Hyde, Charles/0000-0001-7282-8120; Bellis, Matthew/0000-0002-6353-6043 NR 28 TC 103 Z9 103 U1 2 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD SEP 28 PY 2006 VL 641 IS 1 BP 11 EP 17 DI 10.1016/j.physletb.2006.08.011 PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 088YQ UT WOS:000240847400003 ER PT J AU Liu, GD Wang, J Wunschel, DS Lin, YH AF Liu, Guodong Wang, Jun Wunschel, David S. Lin, Yuehe TI Electrochemical proteolytic beacon for detection of matrix metalloproteinase activities SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Lin, YH (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM yuehe.lin@pnl.gov RI Wunschel, David/F-3820-2010; Lin, Yuehe/D-9762-2011 OI Lin, Yuehe/0000-0003-3791-7587 NR 16 TC 38 Z9 38 U1 1 U2 13 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD SEP 27 PY 2006 VL 128 IS 38 BP 12382 EP 12383 DI 10.1021/ja0626638 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 085OF UT WOS:000240612700016 PM 16984165 ER PT J AU Li, B Corbett, JD AF Li, Bin Corbett, John D. TI Intermetallic compounds with 1D infinite tunnels. Syntheses and structures of AAu(4)In(2) (A = K, Rb) SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID CRYSTAL-STRUCTURE; ZINTL PHASE; INDIUM CLUSTERS; HOLLANDITE; FRAMEWORKS; NETWORKS; HAMILTON; METALS C1 Iowa State Univ, Ames Lab, DOE, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Corbett, JD (reprint author), Iowa State Univ, Ames Lab, DOE, Ames, IA 50011 USA. EM jcorbett@iastate.edu NR 35 TC 37 Z9 37 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD SEP 27 PY 2006 VL 128 IS 38 BP 12392 EP 12393 DI 10.1021/ja063503z PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 085OF UT WOS:000240612700021 PM 16984170 ER PT J AU Montes, VA Perez-Bolivar, C Agarwal, N Shinar, J Anzenbacher, P AF Montes, Victor A. Perez-Bolivar, Cesar Agarwal, Neeraj Shinar, Joseph Anzenbacher, Pavel, Jr. TI Molecular-wire behavior of OLED materials: Exciton dynamics in multichromophoric Alq(3)-oligofluorene-Pt(II) porphyrin triads SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID ENERGY-TRANSFER; TRIPLET ENERGY; ELECTROLUMINESCENT DEVICES; ELECTRONIC EXCITATION; CONJUGATED POLYMERS; IRIDIUM COMPLEXES; CHARGE-TRANSPORT; EMISSION; POLYFLUORENES; CONFINEMENT C1 Bowling Green State Univ, Ctr Photochem Sci, Bowling Green, OH 43403 USA. Iowa State Univ, USDOE, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Anzenbacher, P (reprint author), Bowling Green State Univ, Ctr Photochem Sci, Bowling Green, OH 43403 USA. EM pavel@bgnet.bgsu.edu RI Perez-Bolivar, Cesar/E-7336-2011 NR 34 TC 99 Z9 100 U1 2 U2 41 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD SEP 27 PY 2006 VL 128 IS 38 BP 12436 EP 12438 DI 10.1021/ja064471i PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA 085OF UT WOS:000240612700043 PM 16984192 ER PT J AU Chen, JM Liu, RS Lee, JM T Lu, K Yang, TJ Kramer, MJ McCallum, RW AF Chen, J. M. Liu, R. S. Lee, J. M. T Lu, K. Yang, T. J. Kramer, M. J. McCallum, R. W. TI High-resolution XANES study of Eu(Ba1-xRx)(2)Cu3O7+delta (R = Eu, Pr) SO NEW JOURNAL OF PHYSICS LA English DT Article ID RAY-ABSORPTION-SPECTROSCOPY; ELECTRONIC-STRUCTURE; SINGLE-CRYSTALS; SUPERCONDUCTIVITY; ND1+XBA2-XCU3O7+DELTA; YBA2CU3O7-DELTA; PRBA2CU3OX; SYSTEMS; BA; ND AB We have probed the distribution of hole carriers in Eu(Ba1-xEux)(2) Cu3O7+delta (x = 0 - 0.2) and Eu(Ba1-xPrx)(2)Cu3O7+delta (x = 0 - 0.25) by O K-edge and Cu L-edge x-ray absorption spectra. Upon Eu and Pr substitution at the Ba site in Eu(Ba1-xRx)(2)Cu3O7+delta, the concentration of holes in the CuO2 planes becomes greatly diminished. The depletion rate of hole carriers within the CuO2 planes in Eu(Ba1-xPrx)(2)Cu3O7+delta is greater than that in Eu(Ba1-xEux)(2)Cu3O7+delta. The rate of T-c suppression with Pr doping in Eu(Ba1-xPrx)(2)Cu3O7+delta is accordingly greater than that in Eu(Ba1-xEux)(2)Cu3O7+delta. C1 NSRRC, Hsinchu, Taiwan. Natl Taiwan Univ, Dept Chem, Taipei 10764, Taiwan. Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30050, Taiwan. Iowa State Univ, US Dept Energy, Ames Lab, Ames, IA 50011 USA. RP Chen, JM (reprint author), NSRRC, Hsinchu, Taiwan. EM jmchen@nsrrc.org.tw; rsliu@ntu.edu.tw RI Liu, Ru-Shi/A-6796-2010 OI Liu, Ru-Shi/0000-0002-1291-9052 NR 24 TC 2 Z9 2 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD SEP 27 PY 2006 VL 8 AR 215 DI 10.1088/1367-2630/8/9/215 PG 9 WC Physics, Multidisciplinary SC Physics GA 088JH UT WOS:000240807500005 ER PT J AU Kelly, BN Howard, BR Wang, H Robinson, H Sundquist, WI Hill, CP AF Kelly, Brian N. Howard, Bruce R. Wang, Hui Robinson, Howard Sundquist, Wesley I. Hill, Christopher P. TI Implications for viral capsid assembly from crystal structures of HIV-1 Gag(1-278) and CA(133-278)(N) SO BIOCHEMISTRY LA English DT Article ID IMMUNODEFICIENCY-VIRUS TYPE-1; AMINO-TERMINAL DOMAIN; HUMAN CYCLOPHILIN-A; MATRIX PROTEIN; 3-DIMENSIONAL STRUCTURE; REVERSE TRANSCRIPTION; DIMERIZATION DOMAIN; RESTRICTION FACTORS; ELECTRON-DENSITY; MONKEY CELLS AB Gag, the major structural protein of retroviruses such as HIV-1, comprises a series of domains connected by flexible linkers. These domains drive viral assembly by mediating multiple interactions between adjacent Gag molecules and by binding to viral genomic RNA and host cell membranes. Upon viral budding, Gag is processed by the viral protease to liberate distinct domains as separate proteins. The first two regions of Gag are MA, a membrane-binding module, and CA, which is a two-domain protein that makes important Gag-Gag interactions, forms the cone-shaped outer shell of the core (the capsid) in the mature HIV-1 particle, and makes an important interaction with the cellular protein cyclophilin A (CypA). Here, we report crystal structures of the mature CA N-terminal domain (CA(133)(N)-(278)) and a MA-CA(N) fusion (Gag(1-278)) at resolutions/R-free values of 1.9 angstrom/25.7% and 2.2 angstrom/25.8%, respectively. Consistent with earlier studies, a comparison of these structures indicates that processing at the MA-CA junction causes CA to adopt an N-terminal, beta-hairpin conformation that seems to be required for capsid morphology and viral infectivity. In contrast with an NMR study (Tang, C., et al. (2002) Nat. Struct. Biol. 9, 537-543), structural overlap reveals only small relative displacements for helix 6, which is located between the, beta-hairpin and the CypA-binding loop. These observations argue against the proposal that CypA binding is coupled with, beta-hairpin formation and support an earlier surface plasmon resonance study (Yoo, S., et al. (1997) J. Mol. Biol. 269, 780-795), which concluded that, beta-hairpin formation and CypA-binding are energetically independent events. C1 Univ Utah, Dept Biochem, Salt Lake City, UT 84112 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Sundquist, WI (reprint author), Univ Utah, Dept Biochem, Salt Lake City, UT 84112 USA. EM wes@biochem.utah.edu; chris@biochem.utah.edu FU NIAID NIH HHS [AI 45405]; NIGMS NIH HHS [P01 GM066521] NR 68 TC 49 Z9 49 U1 1 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD SEP 26 PY 2006 VL 45 IS 38 BP 11257 EP 11266 DI 10.1021/bi060927x PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 085AQ UT WOS:000240575900002 PM 16981686 ER PT J AU Al Tahtamouni, TM Nepal, N Lin, JY Jiang, HX Chow, WW AF Al Tahtamouni, T. M. Nepal, N. Lin, J. Y. Jiang, H. X. Chow, W. W. TI Growth and photoluminescence studies of Al-rich AlN/AlxGa1-xN quantum wells SO APPLIED PHYSICS LETTERS LA English DT Article ID LIGHT-EMITTING-DIODES; NM EMISSION; OPTICAL-PROPERTIES; WIDTH DEPENDENCE; ALGAN ALLOYS; LINEWIDTHS; EFFICIENCY; OPERATION; LASERS AB A set of AlN/AlxGa1-xN (x similar to 0.65) quantum wells (QWs) with well width L-w varying from 1 to 3 nm has been grown by metal organic chemical vapor deposition. Low temperature photoluminescence (PL) spectroscopy has been employed to study the L-w dependence of the PL spectral peak position, emission efficiency, and linewidth. These results have shown that these AlN/AlGaN QW structures exhibit polarization fields of similar to 4 MV/cm. Due to effects of quantum confinement and polarization fields, AlN/AlGaN QWs with L-w between 2 and 2.5 nm exhibit the highest quantum efficiency. The dependence of the emission linewidth on L-w yielded a linear relationship. The implications of our results on deep ultraviolet optoelectronic device applications are also discussed. (c) 2006 American Institute of Physics. C1 Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA. Sandia Natl Labs, Semicond Mat & Device Sci Dept, Albuquerque, NM 87185 USA. RP Al Tahtamouni, TM (reprint author), Kansas State Univ, Dept Phys, Cardwell Hall, Manhattan, KS 66506 USA. EM jiang@phys.ksu.edu RI Lin, Jingyu/A-7276-2011; Jiang, Hongxing/F-3635-2011 OI Lin, Jingyu/0000-0003-1705-2635; Jiang, Hongxing/0000-0001-9892-4292 NR 23 TC 25 Z9 25 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 131922 DI 10.1063/1.2358107 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800052 ER PT J AU Carr, CW Feit, MD Johnson, MA Rubenchik, AM AF Carr, C. W. Feit, M. D. Johnson, M. A. Rubenchik, A. M. TI Complex morphology of laser-induced bulk damage in K2H(2-x)DxPO4 crystals SO APPLIED PHYSICS LETTERS LA English DT Article ID OPTICAL-MATERIALS; HIGH-PRESSURE; DKDP; BREAKDOWN; DECOMPOSITION; NANOSECOND; KH2PO4; NM AB We present a detailed study of the morphology of laser-induced bulk damage in K2H(2-x)DxPO4 crystals. We see three distinct regions of the internal damage sites: a rubble filled core, a shell that has probably been melted and compacted, and a larger outer region of slightly modified shocked material. The nature of these regions is important for understanding the impact of laser-induced damage on light scattering, which can be significant for high-power laser operation. We propose a simple model to explain the morphology and light scattering we observe. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Carr, CW (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave,Mail Stop L-592, Livermore, CA 94550 USA. EM carr19@llnl.gov RI Feit, Michael/A-4480-2009; Carr, Chris/F-7163-2013 NR 22 TC 40 Z9 43 U1 0 U2 9 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 131901 DI 10.1063/1.2345254 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800031 ER PT J AU Kabir, NA Yoon, Y Knab, JR Chen, JY Markelz, AG Reno, JL Sadofyev, Y Johnson, S Zhang, YH Bird, JP AF Kabir, N. A. Yoon, Y. Knab, J. R. Chen, J. -Y. Markelz, A. G. Reno, J. L. Sadofyev, Y. Johnson, S. Zhang, Y. -H. Bird, J. P. TI Terahertz transmission characteristics of high-mobility GaAs and InAs two-dimensional-electron-gas systems SO APPLIED PHYSICS LETTERS LA English DT Article ID FIELD-EFFECT TRANSISTORS; RESONANT DETECTION; PLASMA-WAVES; RADIATION; PHOTOCONDUCTIVITY; SUBTERAHERTZ AB Frequency-dependent complex conductivity of high-mobility GaAs and InAs two-dimensional-electron-gas (2DEG) systems is studied by terahertz time domain spectroscopy. Determining the momentum relaxation time from a Drude model, the authors find a lower value than that from dc measurements, particularly at high frequencies/low temperatures. These deviations are consistent with the ratio tau(t)/tau(q,) where tau(q) is the full scattering time. This suggests that small-angle scattering leads to weaker heating of 2DEGs at low temperatures than expected from dc mobilit9y. (c) 2006 American Institute of Physics. C1 SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA. SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA. Sandia Natl Labs, Nanostruct & Semicond Phys Dept, Albuquerque, NM 87185 USA. Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA. Arizona State Univ, Ctr Solid State Elect Res, Tempe, AZ 85287 USA. RP Markelz, AG (reprint author), SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA. EM jbird@buffalo.edu RI Bird, Jonathan/G-4068-2010; OI Bird, Jonathan/0000-0002-6966-9007; Markelz, Andrea/0000-0003-0443-4319 NR 16 TC 13 Z9 13 U1 1 U2 12 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 132109 DI 10.1063/1.2357605 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800066 ER PT J AU Miller, MA Mohney, SE Nikiforov, A Cargill, GS Bogart, KHA AF Miller, M. A. Mohney, S. E. Nikiforov, A. Cargill, G. S., III Bogart, K. H. A. TI Ohmic contacts to plasma etched n-Al0.58Ga0.42N SO APPLIED PHYSICS LETTERS LA English DT Article ID ELECTRICAL CHARACTERIZATION; N-GAN; RESISTANCE; ALGAN/GAN; TI/AL/MO/AU; DETECTORS AB Plasma etching is required to expose n-AlxGa1-xN layers for bottom-emitting ultraviolet light emitting diodes grown on sapphire. However, etching can increase the difficulty of forming Ohmic contacts. X-ray photoelectron spectroscopy and cathodoluminescence reveal how the semiconductor changes with etching and help explain why it becomes more difficult to form an Ohmic contact. A V/Al/V/Au metallization has been investigated for Ohmic contacts to n-Al0.58Ga0.42N etched with a BCl3/Cl-2/Ar chemistry. Increased V thickness and higher annealing temperatures were required to obtain a specific contact resistance of 4.7 x 10(-4) Omega cm(2) for etched n-Al0.58Ga0.42N compared to optimized contacts on unetched films. (c) 2006 American Institute of Physics. C1 Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA. Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA. Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA. Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Miller, MA (reprint author), Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA. EM mah309@psu.edu NR 14 TC 11 Z9 11 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 132114 DI 10.1063/1.2357867 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800071 ER PT J AU Neretina, S Mascher, P Hughes, RA Braidy, N Gong, WH Britten, JF Preston, JS Sochinskii, NV Dippo, P AF Neretina, S. Mascher, P. Hughes, R. A. Braidy, N. Gong, W. H. Britten, J. F. Preston, J. S. Sochinskii, N. V. Dippo, P. TI Evolution of wurtzite CdTe through the formation of cluster assembled films SO APPLIED PHYSICS LETTERS LA English DT Article ID PULSED-LASER DEPOSITION; THIN-FILMS; GROWTH; NANOCRYSTALS; SUBSTRATE; CELLS AB An approach has been developed to produce CdTe films with a high proportion of the metastable wurtzite phase. It involves the use of pulsed laser deposition to produce CdTe nanoparticles which are then collected on a substrate. Electron microscopy indicates that the nanoparticles produced have a relatively minor fraction of the wurtzite phase coexisting with the stable zinc blende phase. If these same nanoparticles arrive at a heated substrate they form a relatively dense cluster assembled film with an obvious wurtzite signature. Quite remarkable is that higher temperatures promote the metastable structure at the expense of the stable zinc blende phase. (c) 2006 American Institute of Physics. C1 McMaster Univ, Dept Engn Phys, Hamilton, ON L8S 4L8, Canada. McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada. CSIC, CNM, Inst Microelect Madrid, Madrid 28760, Spain. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Neretina, S (reprint author), McMaster Univ, Dept Engn Phys, Hamilton, ON L8S 4L8, Canada. EM neretis@mcmaster.ca RI Preston, John/B-5773-2009; Microelectronica de Madrid, Instituto de/D-5173-2013; Hughes, Robert/O-1124-2013; Neretina, Svetlana/O-2550-2013; OI Preston, John/0000-0002-1612-1048; Microelectronica de Madrid, Instituto de/0000-0003-4211-9045; Mascher, Peter/0000-0002-8108-0334 NR 18 TC 13 Z9 13 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 133101 DI 10.1063/1.2357033 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800101 ER PT J AU Sigman, J Clem, PG Nordquist, CD AF Sigman, J. Clem, P. G. Nordquist, C. D. TI Compositional grading effects on permittivity temperature stability in (Ba,Sr)TiO3 films SO APPLIED PHYSICS LETTERS LA English DT Article ID THIN-FILMS; DIELECTRIC-PROPERTIES; CRYSTALLIZATION; DEPOSITION; SRTIO3 AB Compositionally graded (BaxSr1-x)TiO3 films are deposited on Pt/Ti/SiO2/Si via chemical solution deposition to investigate permittivity temperature stability improvement. Dielectric responses and temperature coefficients of capacitance (TCCs) are monitored as function of the grading sequence and direction. Downgraded (decreasing Ba/Sr ratio with film thickness) films universally display the lowest TCC values. BaTiO3-rich films display finer grain sizes which appear to be propagated into overlying layers, apparently suppressing ferroelectric character. By applying this microstructure effect, properties may be tailored to develop more temperature-stable capacitor elements for microwave devices. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Sigman, J (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM jsigman@sandia.gov NR 13 TC 11 Z9 12 U1 3 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 132909 DI 10.1063/1.2357934 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800096 ER PT J AU Soo, YL Sun, WH Weng, SC Lin, YS Chang, SL Jang, LY Wu, X Yan, Y AF Soo, Y. L. Sun, W. H. Weng, S. C. Lin, Y. S. Chang, S. L. Jang, L. Y. Wu, X. Yan, Y. TI Local environment surrounding S and Cd in CdS : O thin film photovoltaic materials probed by X-ray absorption fine structures SO APPLIED PHYSICS LETTERS LA English DT Article AB Local environments surrounding Cd and S in CdS:O thin films have been determined using extended x-ray absorption fine structure (EXAFS) and near-edge x-ray absorption fine structure (NEXAFS). As indicated by the Cd EXAFS, Cd atoms remain predominantly bonded with S. The S EXAFS and NEXAFS clearly demonstrate the presence of S-O bonds. The oxygen atoms actually combine with S to form SO3 and SO4 complexes. Combined with the transmission electron micrograph, these x-ray results suggest formation of oxygen-free CdS nanocrystals and provide an unambiguous explanation for the mystery of increased band gap that appears to violate the band anticrossing model. (c) 2006 American Institute of Physics. C1 Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan. Natl Synchrotron Radiat Res Ctr, Hsinchu 30013, Taiwan. NREL, Golden, CO 80401 USA. RP Soo, YL (reprint author), Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan. EM soo@phys.nthu.edu.tw NR 7 TC 12 Z9 12 U1 1 U2 25 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 131908 DI 10.1063/1.2356995 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800038 ER PT J AU Tam, HL Li, KF Cheah, KW Xia, JB Huber, R Wong, WH Pun, YB AF Tam, H. L. Li, K. F. Cheah, K. W. Xia, J. B. Huber, R. Wong, W. H. Pun, Y. B. TI Surface plasmon coupling in hexagonal textured metallic microcavity SO APPLIED PHYSICS LETTERS LA English DT Article ID LIGHT-EMITTING-DIODES; OPTICAL-TRANSMISSION; THIN-FILMS; EMISSION; PHOTOLUMINESCENCE; MOLECULE AB The coupling of surface plasmons to the photonic modes in hexagonal textured metallic microcavity was studied. The modified photonic modes enable efficient coupling with the luminescence source in the microcavity. Hexagonal photonic crystal lattice has higher folding symmetry providing more channels for surface plasmon coupling in different in-plane directions, i.e., more isotropic light extraction profile than one-or two-dimensional gratings. Results show that strong coupling between surface plasmon modes and the waveguide mode in the microcavity has led to angle-selective enhanced light extraction and it was as much as 12 times more light extracted compare to planar microcavity. (c) 2006 American Institute of Physics. C1 Hong Kong Baptist Univ, Dept Phys, Hong Kong, Peoples R China. Hong Kong Baptist Univ, Ctr Adv Luminescence Mat, Hong Kong, Peoples R China. Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. City Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China. RP Cheah, KW (reprint author), Hong Kong Baptist Univ, Dept Phys, Hong Kong, Peoples R China. EM kwcheah@hkbu.edu.hk OI Pun, Edwin/0000-0002-1360-6787 NR 32 TC 5 Z9 5 U1 0 U2 9 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 131123 DI 10.1063/1.2347110 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800023 ER PT J AU Trichy, GR Narayan, J Zhou, H AF Trichy, G. R. Narayan, J. Zhou, H. TI L1(0) ordered epitaxial FePt (001) thin films on TiN/Si (100) by pulsed laser deposition SO APPLIED PHYSICS LETTERS LA English DT Article ID GROWTH; MICROSTRUCTURE AB Epitaxially oriented magnetic FePt (001) thin films were grown on Si (001) substrates with TiN as a template buffer by using pulsed laser deposition. The epitaxial relationship and presence of L1(0) ordering were studied by x-ray diffraction and further confirmed by detailed transmission electron microscopy. The effectiveness of using TiN (diamagnetic metal) as a template, for an epitaxial magnetic FePt heterostructure integrated with silicon and for inducing L1(0) order in the FePt films, has been demonstrated. Magnetic measurements show that the ordered FePt films are predominantly perpendicularly magnetized and have high values of coercivity suitable for magnetic recording applications. (c) 2006 American Institute of Physics. C1 N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Trichy, GR (reprint author), N Carolina State Univ, Dept Mat Sci & Engn, Rm 3030 Engn Bldg 1, Raleigh, NC 27695 USA. EM trgopina@ncsu.edu RI Narayan, Jagdish/D-1874-2009 NR 10 TC 18 Z9 18 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 132502 DI 10.1063/1.2357848 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800078 ER PT J AU Xu, J Xia, JF Wang, J Shinar, J Lin, ZQ AF Xu, Jun Xia, Jianfeng Wang, Jun Shinar, Joseph Lin, Zhiqun TI Quantum dots confined in nanoporous alumina membranes SO APPLIED PHYSICS LETTERS LA English DT Article ID DIBLOCK COPOLYMER TEMPLATES; OPTICAL-PROPERTIES; CDSE NANOCRYSTALS; POROUS ALUMINA; NANOPARTICLES; DEPOSITION; POLYMER AB CdSe/ZnS core/shell quantum dots (QDs) were filled into porous alumina membranes (PAMs) by dip coating. The deposition of QDs induced changes in the refractive index of the PAMs. The amount of absorbed QDs was quantified by fitting the reflection and transmission spectra observed experimentally with one side open and freestanding (i.e., with two sides open) PAMs employed, respectively. The fluorescence of the QDs was found to be retained within the cylindrical nanopores of the PAMs. (c) 2006 American Institute of Physics. C1 Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, USDOE, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Lin, ZQ (reprint author), Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. EM zqlin@iastate.edu RI Lin, Zhiqun/G-6136-2011; Wang, Jun/G-6180-2010 NR 21 TC 34 Z9 34 U1 1 U2 14 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 133110 DI 10.1063/1.2357877 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800110 ER PT J AU Zhou, ZX Jin, R Eres, G Subedi, A Mandrus, D AF Zhou, Zhixian Jin, R. Eres, Gyula Subedi, Alaska Mandrus, D. TI Control of electron transport related defects in in situ fabricated single wall carbon nanotube devices SO APPLIED PHYSICS LETTERS LA English DT Article ID QUANTUM DOTS; ARRAYS; CATALYST; GROWTH AB Metallic single wall carbon nanotube devices were characterized using low temperature transport measurements to study how the growth conditions affect defect formation in carbon nanotubes. Suspended carbon nanotube devices were grown in situ by a molecular beam growth method on a pair of catalyst islands located on opposing Au electrodes fabricated by electron beam lithography. The authors present experimental evidence that defect formation in carbon nanotubes, in addition to the well known growth temperature dependence, is also affected by the nature and the composition of the carbon growth gases. (c) 2006 American Institute of Physics. C1 Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Zhou, ZX (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, POB 2008, Oak Ridge, TN 37831 USA. EM zhouz@ornl.gov RI Mandrus, David/H-3090-2014; Eres, Gyula/C-4656-2017 OI Eres, Gyula/0000-0003-2690-5214 NR 16 TC 8 Z9 8 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 25 PY 2006 VL 89 IS 13 AR 133124 DI 10.1063/1.2354450 PG 3 WC Physics, Applied SC Physics GA 089JE UT WOS:000240875800124 ER PT J AU Feng, S Graham, AL Abbott, JR Brenner, H AF Feng, S. Graham, A. L. Abbott, J. R. Brenner, H. TI Antisymmetric stresses in suspensions: vortex viscosity and energy dissipation SO JOURNAL OF FLUID MECHANICS LA English DT Article ID SPATIALLY NONUNIFORM SUSPENSIONS; DIPOLAR SPHERICAL-PARTICLES; DILUTE SUSPENSION; CLOSURE RELATIONS; EXTERNAL FIELD; RHEOLOGY; FLOW; MICROSTRUCTURE; SPHERES; MOTION AB When the individual particles in an otherwise quiescent suspension of freely suspended spherical particles are acted upon by external couples, the resulting suspension-scale fluid motion is characterized by a non-symmetric state of stress. Viewed at the interstitial scale (i.e. microscopic scale), this coupling between translational and rotational particle motions is a manifestation of particle-particle hydrodynamic interactions and vanishes with the volume fraction phi of suspended spheres. The antisymmetric portion of the stress is quantified by the suspension-scale vortex viscosity mu(v), different from the suspension's shear viscosity mu. Numerical boundary element method (BEM) simulations of such force-free suspensions of spheres uniformly dispersed in incompressible Newtonian liquids of viscosity mu(0) are performed for circumstances in which external couples (of any specified suspension-scale position-dependence) are applied individually to each of the suspended particles in order to cause them to rotate in otherwise quiescent fluids. In the absence of external forces acting on either the spheres or boundaries, such rotations indirectly, through interparticle coupling, cause translational motions of the individual spheres which, owing to the no-slip boundary condition, drag neighbouring fluid along with them. In turn, this combined particle-interstitial fluid movement is manifested as a suspension-scale velocity field, generated exclusively by the action of external couples. Use of this scheme to create suspension-scale particle-phase spin fields Omega and concomitant velocity fields v enables both the vortex and shear viscosities of suspensions to be determined as functions of phi in disordered systems. This scheme is shown, inter alia, to confirm the constitutive equation, T-a = 2 mu(v)epsilon center dot[(1/2)del x v - Omega], proposed in the continuum mechanics literature for the linear relation between the antisymmetric stress T a and the disparity existing between the particle-phase spin rate Omega and half the suspension's vorticity, del x v (with the third-rank pseudotensor epsilon the permutation triadic). Our dynamically based BEM simulations confirm the previous computations of the Prosperetti et al. group for the dependence of the vortex viscosity upon the solids volume fraction in concentrated disordered suspensions, obtained by a rather different simulation scheme. Moreover, our dynamically based rheological calculations are confirmed by our semi-independent, energetically based, calculations that equate the rates of working (equivalently, the energy dissipation rates) at the respective interstitial and suspension scales. As an incidental by-product, the same BEM simulation results also verify the suspension-scale Newtonian constitutive equation, T-s = mu[del u + (del v)(dagger) ], as well as the functional dependence of the shear viscosity mu upon phi found in the literature. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. Texas Tech Univ, Ctr High Performance Comp, Lubbock, TX 79409 USA. MIT, Dept Chem Engn, Cambridge, MA 02139 USA. RP Feng, S (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87544 USA. NR 39 TC 27 Z9 27 U1 1 U2 8 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD SEP 25 PY 2006 VL 563 BP 97 EP 122 DI 10.1017/S0022112006001066 PG 26 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 092GR UT WOS:000241085500005 ER PT J AU Buchheit, TE Goods, SH Kotula, PG Hlava, PF AF Buchheit, T. E. Goods, S. H. Kotula, P. G. Hlava, P. F. TI Electrodepsited 80Ni-20Fe (Permalloy) as a structural material for high aspect ratio microfabrication SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE electrodeposition; LIGA; Ni-Fe alloys; sulfur embrittlement ID NI-ALLOY ELECTRODEPOSITS; NICKEL-IRON; TEXTURE DEVELOPMENT; FE-NI; LIGA; SULFUR; EMBRITTLEMENT; DEPOSITS; FILMS; MEMS AB This article summarizes results from a study directed toward evaluating electrodeposited 80Ni-20Fe as a structural material for the LIGA (German acronym for Lithographie, Galvanformung, Abformung, equivalent to lithography, electroplating and molding) process. Microstructure-property characteristics of pulsed plated and direct current (dc) plated samples were investigated. Little difference was observed in grain structure and crystallographic texture between each type of deposited sample, however, significant compositional modulation across each pulse in the pulseplated samples was observed using energy dispersive X-ray spectral image analysis. Both types of electroformed samples were found to embrittle when subjected to heat treatments between 300 and 700 degrees C due to the presence of co-deposited sulfur. Electron microprobe and Auger analysis revealed that the observed embrittlement resulted from the migration of sulfur, entrained during the deposition process, to grain boundaries where it was present as both a uniformly dispersed grain boundary wetting agent as well as in coarse, blocky Ni/Fe sulfides. Conversely, samples heat treated at temperatures above 1000 degrees C were found to have recovered tensile ductility to values greater than the as-deposited samples. (c) 2006 Elsevier B.V. All rights reserved. C1 Sandia Natl Labs, Mat & Proc Sci Ctr, Albuquerque, NM 87185 USA. Sandia Natl Labs, Phys & Engn Sci Ctr, Livermore, CA 94551 USA. RP Buchheit, TE (reprint author), Sandia Natl Labs, Mat & Proc Sci Ctr, Albuquerque, NM 87185 USA. EM tebuchh@sandia.gov RI Kotula, Paul/A-7657-2011 OI Kotula, Paul/0000-0002-7521-2759 NR 29 TC 21 Z9 21 U1 3 U2 11 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD SEP 25 PY 2006 VL 432 IS 1-2 BP 149 EP 157 DI 10.1016/j.msea.2006.05.149 PG 9 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 087CV UT WOS:000240721000021 ER PT J AU Wang, J Collins, D Covert, D Elleman, R Ferrare, RA Gasparini, R Jonsson, H Ogren, J Sheridan, P Tsay, SC AF Wang, Jian Collins, Don Covert, David Elleman, Robert Ferrare, Richard A. Gasparini, Roberto Jonsson, Haflidi Ogren, John Sheridan, Patrick Tsay, Si-Chee TI Temporal variation of aerosol properties at a rural continental site and study of aerosol evolution through growth law analysis SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID CHEMICAL CONVERSION MECHANISMS; SOUTHERN GREAT-PLAINS; POWER-PLANT PLUMES; SIZE DISTRIBUTIONS; EFFECTIVE RADIUS; MARINE STRATUS; WATER-VAPOR; CLOUD; AIRCRAFT; H2SO4 AB [ 1] Aerosol size distributions were measured by a Scanning Mobility Particle Sizer (SMPS) on board the CIRPAS Twin Otter aircraft during 16 flights at the Southern Great Plains (SGP) site in northern central Oklahoma as part of the Aerosol Intensive Operation period in May 2003. During the same period a second SMPS was deployed at a surface station and provided continuous measurements. Combined with trace gas measurements at the SGP site and back trajectory analysis, the aerosol size distributions provided insights into the sources of aerosols observed at the SGP site. High particle concentrations, observed mostly during daytime, were well correlated with the sulfur dioxide (SO2) mixing ratios, suggesting nucleation involving sulfuric acid is likely the main source of newly formed particles at the SGP. Aerosols within plumes originating from wildfires in Central America were measured at the surface site. Vertically compact aerosol layers, which can be traced back to forest fires in East Asia, were intercepted at altitudes over 3000 m. Analyses of size-dependent particle growth rates for four periods during which high cloud coverage was observed indicate growth dominated by volume controlled reactions. Sulfate accounts for 50% to 72% of the increase in aerosol volume concentration; the rest of the volume concentration increase was likely due to secondary organic species. The growth law analyses and meteorological conditions indicate that the sulfate was produced mainly through aqueous oxidation of SO2 in clouds droplets and hydrated aerosol particles. C1 Brookhaven Natl Lab, Div Atmospher Sci, Upton, NY 11973 USA. Texas A&M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA. Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA. NASA, Langley Res Ctr, Hampton, VA 23681 USA. USN, Postgrad Sch, Monterey, CA 93943 USA. NOAA, Global Monitoring Div, Earth Syst Res Lab, Boulder, CO 80305 USA. NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. RP Wang, J (reprint author), Brookhaven Natl Lab, Div Atmospher Sci, Upton, NY 11973 USA. EM jian@bnl.gov RI Collins, Don/F-9617-2012; Wang, Jian/G-9344-2011; Tsay, Si-Chee/J-1147-2014; Ogren, John/M-8255-2015 OI Ogren, John/0000-0002-7895-9583 NR 48 TC 10 Z9 11 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X EI 2169-8996 J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD SEP 23 PY 2006 VL 111 IS D18 AR D18203 DI 10.1029/2005JD006704 PG 20 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 088RD UT WOS:000240827900001 ER PT J AU Klein, SA Jiang, XN Boyle, J Malyshev, S Xie, SC AF Klein, Stephen A. Jiang, Xianan Boyle, Jim Malyshev, Sergey Xie, Shaocheng TI Diagnosis of the summertime warm and dry bias over the U.S. Southern Great Plains in the GFDL climate model using a weather forecasting approach SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID GLOBAL PRECIPITATION; DIURNAL CYCLE; UNITED-STATES; PREDICTION; SIMULATION; MOISTURE AB Weather forecasts started from realistic initial conditions are used to diagnose the large warm and dry bias over the United States Southern Great Plains simulated by the GFDL climate model. The forecasts exhibit biases in surface air temperature and precipitation within 3 days which appear to be similar to the climate bias. With the model simulating realistic evaporation but underestimated precipitation, a deficit in soil moisture results which amplifies the initial temperature bias through feedbacks with the land surface. The underestimate of precipitation may be associated with an inability of the model to simulate the eastward propagation of convection from the front-range of the Rocky Mountains and is insensitive to an increase of horizontal resolution from 2 degrees to 0.5 degrees latitude. C1 Lawrence Livermore Natl Lab, Div Atmospher Sci, Livermore, CA 94551 USA. Princeton Univ, Atmospher & Ocean Sci Program, Princeton, NJ 08544 USA. Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA. RP Klein, SA (reprint author), Lawrence Livermore Natl Lab, Div Atmospher Sci, L-103,POB 808, Livermore, CA 94551 USA. EM klein21@llnl.gov RI Jiang, Xianan/A-2283-2012; Xie, Shaocheng/D-2207-2013; Klein, Stephen/H-4337-2016 OI Xie, Shaocheng/0000-0001-8931-5145; Klein, Stephen/0000-0002-5476-858X NR 18 TC 43 Z9 43 U1 1 U2 10 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD SEP 22 PY 2006 VL 33 IS 18 AR L18805 DI 10.1029/2006GL027567 PG 6 WC Geosciences, Multidisciplinary SC Geology GA 088QU UT WOS:000240827000008 ER PT J AU Joyce, MG Levy, C Gabor, K Pop, SM Biehl, BD Doukov, TI Ryter, JM Mazon, H Smidt, H van den Heuvel, RHH Ragsdale, SW van der Oost, J Leys, D AF Joyce, M. Gordon Levy, Colin Gabor, Krisztina Pop, Stelian M. Biehl, Benjamin D. Doukov, Tzanko I. Ryter, Jodi M. Mazon, Hortense Smidt, Hauke van den Heuvel, Robert H. H. Ragsdale, Stephen W. van der Oost, John Leys, David TI CprK crystal structures reveal mechanism for transcriptional control of halorespiration SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID NUCLEOTIDE-GATED CHANNELS; CAMP RECEPTOR PROTEIN; DESULFITOBACTERIUM-DEHALOGENANS; DNA-BINDING; ESCHERICHIA-COLI; PURIFICATION; REFINEMENT; ACTIVATION; REGULATOR; CHLORINE AB Halorespiration is a bacterial respiratory process in which haloorganic compounds act as terminal electron acceptors. This process is controlled at transcriptional level by CprK, a member of the ubiquitous CRP-FNR family. Here we present the crystal structures of oxidized CprK in presence of the ligand orthochlorophenolacetic acid and of reduced CprK in absence of this ligand. These structures reveal that highly specific binding of chlorinated, rather than the corresponding non-chlorinated, phenolic compounds in the NH(2)-terminal beta-barrels causes reorientation of these domains with respect to the central alpha-helix at the dimer interface. Unexpectedly, the COOH-terminal DNA-binding domains dimerize in the non-DNA binding state. We postulate the ligand-induced conformational change allows formation of interdomain contacts that disrupt the DNA domain dimer interface and leads to repositioning of the helix-turn-helix motifs. These structures provide a structural framework for further studies on transcriptional control by CRP-FNR homologs in general and of halorespiration regulation by CprK in particular. C1 Manchester Interdisciplinary Bioctr, Manchester M60 1QD, Lancs, England. Univ Wageningen & Res Ctr, Microbiol Lab, NL-6703 CT Wageningen, Netherlands. Univ Nebraska, Beadle Ctr, Dept Biochem, Lincoln, NE 68588 USA. Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. Nebraska Wesleyan Univ, Dept Chem, Lincoln, NE 68504 USA. Univ Utrecht, Bijvoet Ctr, Dept Biomol Mass Spectrometry, NL-3584 CA Utrecht, Netherlands. Univ Utrecht, Inst Pharmaceut Sci, NL-3584 CA Utrecht, Netherlands. RP Leys, D (reprint author), Manchester Interdisciplinary Bioctr, POB 88, Manchester M60 1QD, Lancs, England. EM david.leys@manchester.ac.uk OI Smidt, Hauke/0000-0002-6138-5026 FU Biotechnology and Biological Sciences Research Council [BB/C00521X/1] NR 40 TC 21 Z9 23 U1 0 U2 4 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD SEP 22 PY 2006 VL 281 IS 38 BP 28318 EP 28325 DI 10.1074/jbc.M602654200 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 084LM UT WOS:000240534400069 PM 16803881 ER PT J AU Gritti, F Guiochon, G AF Gritti, Fabrice Guiochon, Georges TI Influence of the degree of coverage of C-18-bonded stationary phases on the mass transfer mechanism and its kinetics SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article DE mass transfer mechanism; column efficiency optimization; RP-HPLC; HETP equation; axial diffusion; eddy diffusion; film mass transfer; transparticle mass transfer; C-18 surface coverage; phenol ID PERFORMANCE LIQUID-CHROMATOGRAPHY; PACKED-BEDS; DISSIPATION AB The influence of the degree of coverage of a silica surface with bonded C-18 alkyl chains on the mass transfer mechanism in RPLC was investigated. Five packing materials were used, prepared with the same batch of silica particles (5 mu m diameter, 90 A average pore size): one column was packed with the silica derivatized by trimethylchlorosilane (TMS) (C-l, 3.92 mu mol/m(2)), and the other four with the silica first derivatized with octadecyldimethyl-chlorosilane (C-18, 0.42, 1.01, 2.03, and 3.15 mu mol/m(2)), and then endcapped with TMS. A solution of methanol and water (25/75, v/v) was used as the mobile phase. The experimental HETP curves were acquired for each column by measuring the first moment and the second central moment of phenol and correcting them for the influence of the temperature increase due to the heat generated by the friction of the stream against the bed. The different kinetic parameters of the mass transfer in these packed chromatographic columns were identified (longitudinal diffusion, eddy diffusion, film mass transfer, and transparticle mass transfer) and quantified by fitting the experimental data to a new general HETP equation recently derived [F. Gritti, G. Guiochon, Anal. Chem., in press (AC-060203R).]. The agreement was excellent and allowed the comparison of the kinetic parameters among the six columns used. The highest column efficiency measured at conventional or fast flow rates (> 0.5 ml/min) is obtained for the most retentive column, which has a surface coverage of 2.03 mu mol/m(2). The smallest HETP measured is as low as 10 mu m, only twice the average particle diameter d(p), due to the large contribution of surface diffusion (90%) to the particle effective diffusivity. However, no significant difference was observed between the efficiencies of the columns packed with C, and C18 derivatized silica. (c) 2006 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 19 TC 26 Z9 26 U1 3 U2 11 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 22 PY 2006 VL 1128 IS 1-2 BP 45 EP 60 DI 10.1016/j.chroma.2006.06.038 PG 16 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 084XR UT WOS:000240568200006 PM 16854425 ER PT J AU Norcross, TS Yeates, TO AF Norcross, Todd S. Yeates, Todd O. TI A framework for describing topological frustration in models of protein folding SO JOURNAL OF MOLECULAR BIOLOGY LA English DT Article DE protein folding; Delaunay tessellation; knotted proteins; topological frustration; dynamic programming algorithm ID CONTACT ORDER; RATE PREDICTION; EARLY EVENTS; DOMAIN; PATHWAYS; STABILITY; MECHANISM; KINETICS; RATES; IDENTIFICATION AB In a natively folded protein of moderate or larger size, the protein backbone may weave through itself in complex ways, raising questions about what sequence of events might have to occur in order for the protein to reach its native configuration from the unfolded state. A mathematical framework is presented here for describing the notion of a topological folding barrier, which occurs when a protein chain must pass through a hole or opening, formed by other regions of the protein structure. Different folding pathways encounter different numbers of such barriers and therefore different degrees of frustration. A dynamic programming algorithm finds the optimal theoretical folding path and minimal degree of frustration for a protein based on its natively folded configuration. Calculations over a database of protein structures provide insights into questions such as whether the path of minimal frustration might tend to favor folding from one or from many sites of folding nucleation, or whether proteins favor folding around the N terminus, thereby providing support for the hypothesis that proteins fold co-translationally. The computational methods are applied to a multi-disulfide bonded protein, with computational findings that are consistent with the experimentally observed folding pathway. Attention is drawn to certain complex protein folds for which the computational method suggests there may be a preferred site of nucleation or where folding is likely to proceed through a relatively well-defined pathway or intermediate. The computational analyses lead to testable models for protein folding. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Calif Los Angeles, Dept Chem & Biochem, DOE Inst Genom & Prot, Los Angeles, CA 90095 USA. RP Yeates, TO (reprint author), Univ Calif Los Angeles, Dept Chem & Biochem, DOE Inst Genom & Prot, 611 Charles Young Dr E,Box 951569, Los Angeles, CA 90095 USA. EM yeates@mbi.ucla.edu OI Yeates, Todd/0000-0001-5709-9839 FU NIGMS NIH HHS [GM07185, GM31299] NR 61 TC 17 Z9 18 U1 0 U2 1 PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-2836 J9 J MOL BIOL JI J. Mol. Biol. PD SEP 22 PY 2006 VL 362 IS 3 BP 605 EP 621 DI 10.1016/j.jmb.2006.07.054 PG 17 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 089MD UT WOS:000240883800018 PM 16930616 ER PT J AU Williams, MC Strakey, J Sudoval, W AF Williams, Mark C. Strakey, Joseph Sudoval, Wayne TI US DOE fossil energy fuel cells program SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Fuel Cell Seminar 2005 CY 2005 CL Palm Springs, CA DE fuel cell; SOFC; energy AB The U.S. Department of Energy's (DOE) Office of Fossil Energy's (FE) National Energy Technology Laboratory (NETL), in partnership with private industry., educational institutions and national laboratories, is leading the development and demonstration of high efficiency, high temperature solid oxide fuel cells (SOFCs) and fuel cell turbine (FCT) hybrid power generation systems for stationary markets including auxiliary power units (A-PUs), distributed generation (DG) and large, coal-based central power plants. The DOE FE fuel cells program has three aspects: the Solid State Energy Conversion Alliance (SECA), Fuel Cell Coal Based Systems for central power, and the High Temperature Electrochemistry Center (HiTEC). The SECA goal is to decrease SOFC system cost to US$ 400 per kilowatt (M) by 2010 for stationary markets. DOE FE is ultimately concerned with coal-based central power plants such as FutureGen. The goal is to aggregate SECA-type fuel cells into larger systems and to produce a very high efficiency megawatt-class FCT hybrid for testing at FutureGen. The low-cost, US$ 400 kW(-1) SECA FCT hybrid is a key component to achieving 60% efficiency by 2020. Advanced aspects of solid oxide technology are part of HiTEC R&D. Technical progress and advances are discussed for all three program aspects. Published by Elsevier B.V. C1 US DOE, Natl Energy Technol Lab, Morgantown, WV 26501 USA. RP Williams, MC (reprint author), US DOE, Natl Energy Technol Lab, 421 Jefferson St, Morgantown, WV 26501 USA. EM markcwilliams1@verizon.net NR 12 TC 81 Z9 83 U1 3 U2 14 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 22 PY 2006 VL 159 IS 2 BP 1241 EP 1247 DI 10.1016/j.jpowsour.2005.12.085 PG 7 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 090OB UT WOS:000240959500054 ER PT J AU Zuo, CD Lee, TH Dorris, SE Balachandran, U Liu, ML AF Zuo, Chendong Lee, T. H. Dorris, S. E. Balachandran, U. Liu, Meilin TI Composite Ni-Ba(Zr0.1Ce0.7Y0.2)O-3 membrane for hydrogen separation SO JOURNAL OF POWER SOURCES LA English DT Article DE BaZr0.1Ce0.7Y0.2O3; hydrogen separation; mixed conductors; permeation; stability; proton conductor ID PROTONIC CONDUCTION; CHEMICAL-STABILITY; SOLID-SOLUTIONS; TRANSPORT; BACEO3; OXIDES AB Composite membranes consisting of Ni metal and Ba(Zr0.1Ce0.7Y0.2)O-3 (or Ni-BZCY7) have been developed for separation of hydrogen from gas mixtures to replace Ni-BCY20 (Ni-BaCe(0.8)y(0.2)O(3)), which has poor stability in CO2 and H2O-containing atmosphere. Hydrogen fluxes through these cermet membranes were measured as a function of temperature, membrane thickness, and partial pressure of hydrogen in various atmospheres. Results indicated that the Ni-BZCY7 membrane is chemically stable and display high hydrogen permeability. A maximum flux of 0.805 cm(3) min(-1) cm(2) was obtained for a dense cermet membrane of 266-mu m-thick at 900 degrees C using 100% H-2 as the feed gas and 100 ppm H-2/N-2 as the sweep gas. The stable performance of Ni-BZCY7 cermet membrane during exposure to a wet gas containing 30% CO2 for about 80 h indicated that it is promising for practical applications. (c) 2006 Elsevier B.V. All rights reserved. C1 Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. RP Liu, ML (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. EM Meilin.Liu@mse.gatech.edu RI Zuo, Chendong/A-3976-2011; zuo, chendong/A-7006-2011; Liu, Meilin/E-5782-2010 OI Liu, Meilin/0000-0002-6188-2372 NR 12 TC 66 Z9 71 U1 1 U2 25 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 22 PY 2006 VL 159 IS 2 BP 1291 EP 1295 DI 10.1016/j.jpowsour.2005.12.042 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 090OB UT WOS:000240959500060 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 Anzelc, MS Arnoud, Y Arov, M Askew, A Asman, B Jesus, ACSA Atramentov, O Autermann, C Avila, C Ay, C Badaud, F Baden, A Bagby, L Baldin, B Bandurin, DV Banerjee, P Banerjee, S Barberis, E Bargassa, P Baringer, P Barnes, C Barreto, J Bartlett, JF Bassler, U Bauer, D Bean, A Begalli, M Begel, M Belanger-Champagne, C Bellantoni, L Bellavance, A Benitez, JA Beri, SB Bernardi, G Bernhard, R Berntzon, L 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 Bloom, K Blumenschein, U Boehnlein, A Boeriu, O Bolton, TA Borcherding, F Borissov, G Bos, K Bose, T Brandt, A Brock, R Brooijmans, G Bross, A Brown, D Buchanan, NJ Buchholz, D Buehler, M Buescher, V Burdin, S Burke, S Burnett, TH Busato, E Buszello, CP Butler, JM Calfayan, P Calvet, S 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 Chevallier, F Cho, DK Choi, S Choudhary, B Christofek, L Claes, D Clement, B Clement, C Coadou, Y Cooke, M Cooper, WE Coppage, D Corcoran, M Cousinou, MC Cox, B Crepe-Renaudin, S Cutts, D Cwiok, M da Motta, H Das, A Das, M Davies, B Davies, G Davis, GA De, K de Jong, P de Jong, SJ De La Cruz-Burelo, E Martins, CD Degenhardt, JD Deliot, F Demarteau, M Demina, R Demine, P Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Doidge, M Dominguez, A Dong, H 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 Estrada, J Evans, H Evdokimov, A Evdokimov, VN Fatakia, SN Feligioni, L Ferapontov, AV Ferbel, T Fiedler, F Filthaut, F Fisher, W Fisk, HE Fleck, I Ford, M 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, A Gay, P Gele, D Gelhaus, R Gerber, CE Gershtein, Y Gillberg, D Ginther, G Gollub, N Gomez, B Gounder, K Goussiou, A Grannis, PD Greenlee, H Greenwood, ZD Gregores, EM Grenier, G Gris, P Grivaz, JF Grunendahl, S Grunewald, MW Guo, F Guo, J Gutierrez, G Gutierrez, P Haas, A Hadley, NJ Haefner, P Hagopian, S Haley, J Hall, I Hall, RE Han, L Hanagaki, K Harder, K Harel, A Harrington, R Hauptman, JM Hauser, R Hays, J Hebbeker, T Hedin, D Hegeman, JG Heinmiller, JM Heinson, AP Heintz, U Hensel, C Hesketh, G Hildreth, MD Hirosky, R Hobbs, JD Hoeneisen, B Hoeth, H Hohlfeld, M Hong, SJ Hooper, R Houben, P Hu, Y Hubacek, Z Hynek, V Iashvili, I Illingworth, R Ito, AS Jabeen, S Jaffre, M Jain, S Jakobs, K Jarvis, C Jenkins, A Jesik, R Johns, K Johnson, C Johnson, M Jonckheere, A Jonsson, P Juste, A Kafer, D Kahn, S Kajfasz, E Kalinin, AM Kalk, JM Kalk, JR Kappler, S Karmanov, D Kasper, J Kasper, P Katsanos, I Kau, D Kaur, R Kehoe, R Kermiche, S Kesisoglou, S Khalatyan, N Khanov, A Kharchilava, A Kharzheev, YM Khatidze, D Kim, H Kim, TJ Kirby, MH Klima, B Kohli, JM Konrath, JP Kopal, M Korablev, VM Kotcher, J Kothari, B Koubarovsky, A Kozelov, AV Kozminski, J Kryemadhi, A Krzywdzinski, S Kuhl, T Kumar, A Kunori, S Kupco, A Kurca, T Kvita, J Lager, S Lammers, S Landsberg, G Lazoflores, J Le Bihan, AC Lebrun, P Lee, WM Leflat, A Lehner, F Lesne, V Leveque, J Lewis, P Li, J Li, QZ Lima, JGR Lincoln, D Linnemann, J Lipaev, VV Lipton, R Liu, Z Lobo, L Lobodenko, A Lokajicek, M Lounis, A Love, P Lubatti, HJ 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 McCarthy, R McCroskey, R Meder, D Melnitchouk, A Mendes, A Mendoza, L Merkin, M Merritt, KW Meyer, A Meyer, J Michaut, M Miettinen, H Millet, T Mitrevski, J Molina, J Mondal, NK Monk, J Moore, RW Moulik, T Muanza, GS Mulders, M Mulhearn, M Mundim, L Mutaf, YD Nagy, E Naimuddin, M Narain, M Naumann, NA Neal, HA Negret, JP Nelson, S Neustroev, P Noeding, C Nomerotski, A Novaes, SF Nunnemann, T O'Dell, V O'Neil, DC Obrant, G Oguri, V Oliveira, N Oshima, N Otec, R Garzon, GJO Owen, M Padley, P Parashar, N Park, SJ Park, SK Parsons, J Partridge, R Parua, N Patwa, A Pawloski, G Perea, PM Perez, E Peters, K Petroff, P Petteni, M Piegaia, R Pleier, MA Podesta-Lerma, PLM Podstavkov, VM Pogorelov, Y Pol, ME Pompos, A Pope, BG Popov, AV da Silva, WLP Prosper, HB Protopopescu, S Qian, J Quadt, A Quinn, B Rani, KJ Ranjan, K Rapidis, PA Ratoff, PN Renkel, P 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 Scheglov, Y 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 Siccardi, V Sidwell, RA Simak, V Sirotenko, V Skubic, P Slattery, P Smith, RP Snow, GR Snow, J Snyder, S Soldner-Rembold, S Song, X Sonnenschein, L Sopczak, A Sosebee, M Soustruznik, K Souza, M Spurlock, B 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 Tiller, B Titov, M Tokmenin, VV Tomoto, M Toole, T Torchiani, I Towers, S Trefzger, T Trincaz-Duvoid, S Tsybychev, D Tuchming, B Tully, C Turcot, AS Tuts, PM Unalan, R Uvarov, L Uvarov, S Uzunyan, S Vachon, B van den Berg, PJ 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 Vint, P Vlimant, JR Von Toerne, E Voutilainen, M Vreeswijk, M Wahl, HD Wang, L Warchol, J Watts, G Wayne, M Weber, M Weerts, H Wermes, N Wetstein, M White, A Wicke, D Wilson, GW Wimpenny, SJ Wobisch, M Womersley, J Wood, DR Wyatt, TR Xie, Y Xuan, N Yacoob, S Yamada, R Yan, M Yasuda, T Yatsunenko, YA Yip, K Yoo, HD Youn, SW Yu, C Yu, J Yurkewicz, A Zatserklyaniy, A Zeitnitz, C Zhang, D Zhao, T Zhao, Z Zhou, B Zhu, J Zielinski, M Zieminska, D Zieminski, A Zutshi, V Zverev, EG AF Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S. Adams, M. Adams, T. Agelou, M. Agram, J. -L. Ahn, S. H. Ahsan, M. Alexeev, G. D. Alkhazov, G. Alton, A. Alverson, G. Alves, G. A. Anastasoaie, M. Andeen, T. Anderson, S. Andrieu, B. Anzelc, M. S. Arnoud, Y. Arov, M. Askew, A. Asman, B. Jesus, A. C. S. Assis Atramentov, O. Autermann, C. Avila, C. Ay, C. Badaud, F. Baden, A. Bagby, L. Baldin, B. Bandurin, D. V. Banerjee, P. Banerjee, S. Barberis, E. Bargassa, P. Baringer, P. Barnes, C. Barreto, J. Bartlett, J. F. Bassler, U. Bauer, D. Bean, A. Begalli, M. Begel, M. Belanger-Champagne, C. Bellantoni, L. Bellavance, A. Benitez, J. A. Beri, S. B. Bernardi, G. Bernhard, R. Berntzon, L. Bertram, I. Besancon, M. Beuselinck, R. Bezzubov, V. A. Bhat, P. C. Bhatnagar, V. Binder, M. Biscarat, C. Black, K. M. Blackler, I. Blazey, G. Blekman, F. Blessing, S. Bloch, D. Bloom, K. Blumenschein, U. Boehnlein, A. Boeriu, O. Bolton, T. A. Borcherding, F. Borissov, G. Bos, K. Bose, T. Brandt, A. Brock, R. Brooijmans, G. Bross, A. Brown, D. Buchanan, N. J. Buchholz, D. Buehler, M. Buescher, V. Burdin, S. Burke, S. Burnett, T. H. Busato, E. Buszello, C. P. Butler, J. M. Calfayan, P. Calvet, S. Cammin, J. Caron, S. Carvalho, W. Casey, B. C. K. Cason, N. M. Castilla-Valdez, H. Chakrabarti, S. Chakraborty, D. Chan, K. M. Chandra, A. Chapin, D. Charles, F. Cheu, E. Chevallier, F. Cho, D. K. Choi, S. Choudhary, B. Christofek, L. Claes, D. Clement, B. Clement, C. Coadou, Y. Cooke, M. Cooper, W. E. Coppage, D. Corcoran, M. Cousinou, M. -C. Cox, B. Crepe-Renaudin, S. Cutts, D. Cwiok, M. da Motta, H. Das, A. Das, M. Davies, B. Davies, G. Davis, G. A. De, K. de Jong, P. de Jong, S. J. De La Cruz-Burelo, E. Martins, C. De Oliveira Degenhardt, J. D. Deliot, F. Demarteau, M. Demina, R. Demine, P. Denisov, D. Denisov, S. P. Desai, S. Diehl, H. T. Diesburg, M. Doidge, M. Dominguez, A. Dong, H. Dudko, L. V. Duflot, L. Dugad, S. R. Duperrin, A. Dyer, J. Dyshkant, A. Eads, M. Edmunds, D. Edwards, T. Ellison, J. Elmsheuser, J. Elvira, V. D. Eno, S. Ermolov, P. Estrada, J. Evans, H. Evdokimov, A. Evdokimov, V. N. Fatakia, S. N. Feligioni, L. Ferapontov, A. V. Ferbel, T. Fiedler, F. Filthaut, F. Fisher, W. Fisk, H. E. Fleck, I. Ford, M. Fortner, M. Fox, H. Fu, S. Fuess, S. Gadfort, T. Galea, C. F. Gallas, E. Galyaev, E. Garcia, C. Garcia-Bellido, A. Gardner, J. Gavrilov, V. Gay, A. Gay, P. Gele, D. Gelhaus, R. Gerber, C. E. Gershtein, Y. Gillberg, D. Ginther, G. Gollub, N. Gomez, B. Gounder, K. Goussiou, A. Grannis, P. D. Greenlee, H. Greenwood, Z. D. Gregores, E. M. Grenier, G. Gris, Ph. Grivaz, J. -F. Grunendahl, S. Grunewald, M. W. Guo, F. Guo, J. Gutierrez, G. Gutierrez, P. Haas, A. Hadley, N. J. Haefner, P. Hagopian, S. Haley, J. Hall, I. Hall, R. E. Han, L. Hanagaki, K. Harder, K. Harel, A. Harrington, R. Hauptman, J. M. Hauser, R. Hays, J. Hebbeker, T. Hedin, D. Hegeman, J. G. Heinmiller, J. M. Heinson, A. P. Heintz, U. Hensel, C. Hesketh, G. Hildreth, M. D. Hirosky, R. Hobbs, J. D. Hoeneisen, B. Hoeth, H. Hohlfeld, M. Hong, S. J. Hooper, R. Houben, P. Hu, Y. Hubacek, Z. Hynek, V. Iashvili, I. Illingworth, R. Ito, A. S. Jabeen, S. Jaffre, M. Jain, S. Jakobs, K. Jarvis, C. Jenkins, A. Jesik, R. Johns, K. Johnson, C. Johnson, M. Jonckheere, A. Jonsson, P. Juste, A. Kaefer, D. Kahn, S. Kajfasz, E. Kalinin, A. M. Kalk, J. M. Kalk, J. R. Kappler, S. Karmanov, D. Kasper, J. Kasper, P. Katsanos, I. Kau, D. Kaur, R. Kehoe, R. Kermiche, S. Kesisoglou, S. Khalatyan, N. Khanov, A. Kharchilava, A. Kharzheev, Y. M. Khatidze, D. Kim, H. Kim, T. J. Kirby, M. H. Klima, B. Kohli, J. M. Konrath, J. -P. Kopal, M. Korablev, V. M. Kotcher, J. Kothari, B. Koubarovsky, A. Kozelov, A. V. Kozminski, J. Kryemadhi, A. Krzywdzinski, S. Kuhl, T. Kumar, A. Kunori, S. Kupco, A. Kurca, T. Kvita, J. Lager, S. Lammers, S. Landsberg, G. Lazoflores, J. Le Bihan, A. -C. Lebrun, P. Lee, W. M. Leflat, A. Lehner, F. Lesne, V. Leveque, J. Lewis, P. Li, J. Li, Q. Z. Lima, J. G. R. Lincoln, D. Linnemann, J. Lipaev, V. V. Lipton, R. Liu, Z. Lobo, L. Lobodenko, A. Lokajicek, M. Lounis, A. Love, P. Lubatti, H. J. Lynker, M. Lyon, A. L. Maciel, A. K. A. Madaras, R. J. Maettig, P. Magass, C. Magerkurth, A. Magnan, A. -M. Makovec, N. Mal, P. K. Malbouisson, H. B. Malik, S. Malyshev, V. L. Mao, H. S. Maravin, Y. Martens, M. Mattingly, S. E. K. McCarthy, R. McCroskey, R. Meder, D. Melnitchouk, A. Mendes, A. Mendoza, L. Merkin, M. Merritt, K. W. Meyer, A. Meyer, J. Michaut, M. Miettinen, H. Millet, T. Mitrevski, J. Molina, J. Mondal, N. K. Monk, J. Moore, R. W. Moulik, T. Muanza, G. S. Mulders, M. Mulhearn, M. Mundim, L. Mutaf, Y. D. Nagy, E. Naimuddin, M. Narain, M. Naumann, N. A. Neal, H. A. Negret, J. P. Nelson, S. Neustroev, P. Noeding, C. Nomerotski, A. Novaes, S. F. Nunnemann, T. O'Dell, V. O'Neil, D. C. Obrant, G. Oguri, V. Oliveira, N. Oshima, N. Otec, R. Otero y Garzon, G. J. Owen, M. Padley, P. Parashar, N. Park, S. -J. Park, S. K. Parsons, J. Partridge, R. Parua, N. Patwa, A. Pawloski, G. Perea, P. M. Perez, E. Peters, K. Petroff, P. Petteni, M. Piegaia, R. Pleier, M. -A. Podesta-Lerma, P. L. M. Podstavkov, V. M. Pogorelov, Y. Pol, M. -E. Pompos, A. Pope, B. G. Popov, A. V. Prado da Silva, W. L. Prosper, H. B. Protopopescu, S. Qian, J. Quadt, A. Quinn, B. Rani, K. J. Ranjan, K. Rapidis, P. A. Ratoff, P. N. Renkel, P. Reucroft, S. Rijssenbeek, M. Ripp-Baudot, I. Rizatdinova, F. Robinson, S. Rodrigues, R. F. Royon, C. Rubinov, P. Ruchti, R. Rud, V. I. Sajot, G. Sanchez-Hernandez, A. Sanders, M. P. Santoro, A. Savage, G. Sawyer, L. Scanlon, T. Schaile, D. Schamberger, R. D. Scheglov, Y. Schellman, H. Schieferdecker, P. Schmitt, C. Schwanenberger, C. Schwartzman, A. Schwienhorst, R. Sengupta, S. Severini, H. Shabalina, E. Shamim, M. Shary, V. Shchukin, A. A. Shephard, W. D. Shivpuri, R. K. Shpakov, D. Siccardi, V. Sidwell, R. A. Simak, V. Sirotenko, V. Skubic, P. Slattery, P. Smith, R. P. Snow, G. R. Snow, J. Snyder, S. Soldner-Rembold, S. Song, X. Sonnenschein, L. Sopczak, A. Sosebee, M. Soustruznik, K. Souza, M. Spurlock, B. Stark, J. Steele, J. Stevenson, K. Stolin, V. Stone, A. Stoyanova, D. A. Strandberg, J. Strang, M. A. Strauss, M. Stroehmer, R. Strom, D. Strovink, M. Stutte, L. Sumowidagdo, S. Sznajder, A. Talby, M. Tamburello, P. Taylor, W. Telford, P. Temple, J. Tiller, B. Titov, M. Tokmenin, V. V. Tomoto, M. Toole, T. Torchiani, I. Towers, S. Trefzger, T. Trincaz-Duvoid, S. Tsybychev, D. Tuchming, B. Tully, C. Turcot, A. S. Tuts, P. M. Unalan, R. Uvarov, L. Uvarov, S. Uzunyan, S. Vachon, B. van den Berg, P. J. Van Kooten, R. van Leeuwen, W. M. Varelas, N. Varnes, E. W. Vartapetian, A. Vasilyev, I. A. Vaupel, M. Verdier, P. Vertogradov, L. S. Verzocchi, M. Villeneuve-Seguier, F. Vint, P. Vlimant, J. -R. Von Toerne, E. Voutilainen, M. Vreeswijk, M. Wahl, H. D. Wang, L. Warchol, J. Watts, G. Wayne, M. Weber, M. Weerts, H. Wermes, N. Wetstein, M. White, A. Wicke, D. Wilson, G. W. Wimpenny, S. J. Wobisch, M. Womersley, J. Wood, D. R. Wyatt, T. R. Xie, Y. Xuan, N. Yacoob, S. Yamada, R. Yan, M. Yasuda, T. Yatsunenko, Y. A. Yip, K. Yoo, H. D. Youn, S. W. Yu, C. Yu, J. Yurkewicz, A. Zatserklyaniy, A. Zeitnitz, C. Zhang, D. Zhao, T. Zhao, Z. Zhou, B. Zhu, J. Zielinski, M. Zieminska, D. Zieminski, A. Zutshi, V. Zverev, E. G. TI Search for neutral Higgs bosons decaying to tau pairs in p(p)over-bar collisions at root s=1.96 TeV SO PHYSICAL REVIEW LETTERS LA English DT Article ID MSSM AB A search for the production of neutral Higgs bosons Phi decaying into tau(+)tau(-) final states in p (p) over bar collisions at a center-of-mass energy of 1.96 TeV is presented. The data, corresponding to an integrated luminosity of approximately 325 pb(-1), were collected by the D0 experiment at the Fermilab Tevatron Collider. Since no excess compared to the expectation from standard model processes is found, limits on the production cross section times branching ratio are set. The results are combined with those obtained from the D0 search for Phi b((b) over bar)-> b (b) over barb((b) over bar) and are interpreted in the minimal supersymmetric standard model. C1 Univ Buenos Aires, Buenos Aires, DF, Argentina. Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil. Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil. Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil. Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada. Univ Alberta, Edmonton, AB, Canada. York Univ, Toronto, ON M3J 2R7, Canada. McGill Univ, Montreal, PQ, Canada. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Sci & Technol China, Hefei 230026, Peoples R China. Univ Los Andes, Bogota, Colombia. Charles Univ Prague, Ctr Particle Phys, Prague, Czech Republic. Czech Tech Univ, CR-16635 Prague, Czech Republic. Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic. Univ San Francisco, Quito, Ecuador. Univ Clermont Ferrand, CNRS, Phys Corpusculaire Lab, IN2P3, Clermont Ferrand, France. Univ Grenoble 1, CNRS, Lab Phys Subatom & Cosmol, IN2P3, Grenoble, France. Univ Aix Marseille 2, CNRS, IN2P3, CPPM, Marseille, France. Lab Accelerateur Lineaire, CNRS, IN2P3, F-91405 Orsay, France. Univ Paris 06, CNRS, LPNHE, IN2P3, Paris, France. Univ Paris 07, CNRS, LPNHE, IN2P3, Paris, France. Univ Strasbourg 1, CNRS, IN2P3, IReS, Strasbourg, France. Univ Haute Alsace, Mulhouse, France. Univ Lyon 1, Inst Phys Nucl, CNRS, IN2P3, F-69622 Villeurbanne, France. Rhein Westfal TH Aachen, Inst Phys A 3, D-5100 Aachen, Germany. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Freiburg, Inst Phys, Freiburg, Germany. Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany. Univ Munich, Munich, Germany. Univ Gesamthsch Wuppertal, Fachbereich Phys, D-5600 Wuppertal, Germany. Panjab Univ, Chandigarh 160014, India. Univ Delhi, Delhi 110007, India. Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. Univ Coll Dublin, Dublin 2, Ireland. Korea Univ, Korea Detector Lab, Seoul 136701, South Korea. Sungkyunkwan Univ, Suwon 440746, South Korea. CINVESTAV, Mexico City 14000, DF, Mexico. FOM, Inst NIKHEF, NL-1098 SJ Amsterdam, Netherlands. Univ Amsterdam, NIKHEF, NL-1098 SJ Amsterdam, Netherlands. Radboud Univ Nijmegen, NIKHEF, Nijmegen, Netherlands. Joint Inst Nucl Res, Dubna, Russia. Inst Theoret & Expt Phys, Moscow 117259, Russia. Moscow MV Lomonosov State Univ, Moscow, Russia. Inst High Energy Phys, Protvino, Russia. Petersburg Nucl Phys Inst, St Petersburg, Russia. Royal Inst Technol, Stockholm, Sweden. Lund Univ, Lund, Sweden. Stockholm Univ, S-10691 Stockholm, Sweden. Uppsala Univ, Uppsala, Sweden. Univ Zurich, Inst Phys, Zurich, Switzerland. Univ Lancaster, Lancaster, England. Univ London Imperial Coll Sci Technol & Med, London, England. Univ Manchester, Manchester, Lancs, England. Univ Arizona, Tucson, AZ 85721 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Calif State Univ Fresno, Fresno, CA 93740 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Florida State Univ, Tallahassee, FL 32306 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Illinois, Chicago, IL 60607 USA. No Illinois Univ, De Kalb, IL 60115 USA. Northwestern Univ, Evanston, IL 60208 USA. Indiana Univ, Bloomington, IN 47405 USA. Univ Notre Dame, Notre Dame, IN 46556 USA. Purdue Univ Calumet, Hammond, IN 46323 USA. Iowa State Univ, Ames, IA 50011 USA. Univ Kansas, Lawrence, KS 66045 USA. Kansas State Univ, Manhattan, KS 66506 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Univ Maryland, College Pk, MD 20742 USA. Boston Univ, Boston, MA 02215 USA. Northeastern Univ, Boston, MA 02115 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ Mississippi, University, MS 38677 USA. Univ Nebraska, Lincoln, NE 68588 USA. Princeton Univ, Princeton, NJ 08544 USA. SUNY Buffalo, Buffalo, NY 14260 USA. Columbia Univ, New York, NY 10027 USA. Univ Rochester, Rochester, NY 14627 USA. SUNY Stony Brook, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Langston Univ, Oklahoma City, OK 73050 USA. Univ Oklahoma, Norman, OK 73019 USA. Oklahoma State Univ, Stillwater, OK 74078 USA. Brown Univ, Providence, RI 02912 USA. Univ Texas, Arlington, TX 76019 USA. So Methodist Univ, Dallas, TX 75275 USA. So Methodist Univ, Houston, TX 77005 USA. Rice Univ, Houston, TX 77005 USA. Univ Virginia, Charlottesville, VA 22901 USA. Univ Washington, Seattle, WA 98195 USA. RP Abazov, VM (reprint author), Univ Buenos Aires, Buenos Aires, DF, Argentina. RI Oguri, Vitor/B-5403-2013; Mundim, Luiz/A-1291-2012; Nomerotski, Andrei/A-5169-2010; Novaes, Sergio/D-3532-2012; Merkin, Mikhail/D-6809-2012; Leflat, Alexander/D-7284-2012; Dudko, Lev/D-7127-2012; Shivpuri, R K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; Yip, Kin/D-6860-2013; De, Kaushik/N-1953-2013; Fisher, Wade/N-4491-2013; Alves, Gilvan/C-4007-2013; Deliot, Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; KIM, Tae Jeong/P-7848-2015; Guo, Jun/O-5202-2015; Sznajder, Andre/L-1621-2016 OI Mundim, Luiz/0000-0001-9964-7805; Novaes, Sergio/0000-0003-0471-8549; Dudko, Lev/0000-0002-4462-3192; Yip, Kin/0000-0002-8576-4311; De, Kaushik/0000-0002-5647-4489; Sharyy, Viatcheslav/0000-0002-7161-2616; KIM, Tae Jeong/0000-0001-8336-2434; Guo, Jun/0000-0001-8125-9433; Sznajder, Andre/0000-0001-6998-1108 NR 10 TC 29 Z9 29 U1 1 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD SEP 22 PY 2006 VL 97 IS 12 AR 121802 DI 10.1103/PhysRevLett.97.121802 PG 7 WC Physics, Multidisciplinary SC Physics GA 086NN UT WOS:000240680400012 ER PT J AU DeBeer-Schmitt, L Dewhurst, CD Hoogenboom, BW Petrovic, C Eskildsen, MR AF DeBeer-Schmitt, L. Dewhurst, C. D. Hoogenboom, B. W. Petrovic, C. Eskildsen, M. R. TI Field dependent coherence length in the superclean, high-kappa superconductor CeCoIn5 SO PHYSICAL REVIEW LETTERS LA English DT Article ID ANGLE NEUTRON-SCATTERING; FLUX-LINE-LATTICE; MIXED-STATE; II SUPERCONDUCTOR; VORTEX LATTICE; TRANSITION; PHASE; CORE; UPT3 AB Using small-angle neutron scattering, we have studied the flux-line lattice (FLL) in the superclean, high-kappa superconductor CeCoIn5. The FLL undergoes a first-order symmetry and reorientation transition at similar to 0.55 T at 50 mK. In addition, the FLL form factor in this material is found to be independent of the applied magnetic field, in striking contrast to the exponential decrease usually observed in superconductors. This result is consistent with a strongly field-dependent coherence length, proportional to the vortex separation. C1 Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France. Univ Basel, ME Muller Inst Struct Biol, Biozentrum, CH-4056 Basel, Switzerland. Univ Basel, Inst Phys, CH-4056 Basel, Switzerland. Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. RP DeBeer-Schmitt, L (reprint author), Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. EM eskildsen@nd.edu RI Petrovic, Cedomir/A-8789-2009; Eskildsen, Morten/E-7779-2011; DeBeer-Schmitt, Lisa/I-3313-2015 OI Petrovic, Cedomir/0000-0001-6063-1881; DeBeer-Schmitt, Lisa/0000-0001-9679-3444 NR 39 TC 29 Z9 29 U1 0 U2 2 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 22 PY 2006 VL 97 IS 12 AR 127001 DI 10.1103/PhysRevLett.97.127001 PG 4 WC Physics, Multidisciplinary SC Physics GA 086NN UT WOS:000240680400052 PM 17025991 ER PT J AU Dracoulis, GD Kondev, FG Lane, GJ Byrne, AP McGoram, TR Kibedi, T Ahmad, I Carpenter, MP Janssens, RVF Lauritsen, T Lister, CJ Seweryniak, D Chowdhury, P Tandel, SK AF Dracoulis, G. D. Kondev, F. G. Lane, G. J. Byrne, A. P. McGoram, T. R. Kibedi, T. Ahmad, I. Carpenter, M. P. Janssens, R. V. F. Lauritsen, T. Lister, C. J. Seweryniak, D. Chowdhury, P. Tandel, S. K. TI Anomalous isomeric decays in Lu-174 as a probe of K mixing and interactions in deformed nuclei SO PHYSICAL REVIEW LETTERS LA English DT Article ID MULTI-QUASI-PARTICLE; TRANSITION-PROBABILITIES; BARRIER PENETRATION; ROTATIONAL BANDS; SPIN; SELECTION; ALIGNMENT; HF-174; YRAST AB A K-pi=13(+), 280 ns four-quasiparticle isomer in the odd-odd nucleus Lu-174 has been identified and characterized. The isomer decays to both K-pi=7(+) and K-pi=0(+) rotational bands obtained from the parallel and antiparallel coupling of the proton 7/2(+)[404] and neutron 7/2(+)[633] orbitals. K mixing caused by particle-rotation coupling explains the anomalously fast transition rates to the 7(+) band but those to the 0(+) band are caused by a chance degeneracy between the isomer and a collective state, allowing the mixing matrix element for a large K difference to be deduced. C1 Australian Natl Univ, Dept Nucl Phys, RS Phys SE, Canberra, ACT 0200, Australia. Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. Australian Natl Univ, Dept Phys, Canberra, ACT 0200, Australia. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Massachusetts, Dept Phys, Lowell, MA 01854 USA. RP Dracoulis, GD (reprint author), Australian Natl Univ, Dept Nucl Phys, RS Phys SE, Canberra, ACT 0200, Australia. RI Dracoulis, George/A-8123-2008; Lane, Gregory/A-7570-2011; Kibedi, Tibor/E-8282-2010; Carpenter, Michael/E-4287-2015 OI Lane, Gregory/0000-0003-2244-182X; Kibedi, Tibor/0000-0002-9205-7500; Carpenter, Michael/0000-0002-3237-5734 NR 26 TC 33 Z9 34 U1 0 U2 0 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 22 PY 2006 VL 97 IS 12 AR 122501 DI 10.1103/PhysRevLett.97.122501 PG 4 WC Physics, Multidisciplinary SC Physics GA 086NN UT WOS:000240680400018 PM 17025957 ER PT J AU Ivanov, VV Sotnikov, VI Sarkisov, GS Cowan, TE Bland, SN Jones, B Coverdale, CA Deeney, C Laca, PJ Astanovitskiy, AL Haboub, A AF Ivanov, V. V. Sotnikov, V. I. Sarkisov, G. S. Cowan, T. E. Bland, S. N. Jones, B. Coverdale, C. A. Deeney, C. Laca, P. J. Astanovitskiy, A. L. Haboub, A. TI Dynamics of mass transport and magnetic fields in low-wire-number-array Z pinches SO PHYSICAL REVIEW LETTERS LA English DT Article ID X-RAY POWER; IMPLOSION; INSTABILITY; PHYSICS AB The dynamics of mass transport were observed in a wire array implosion with multiframe laser probing. Plasma bubbles arise at breaks in the wires. Interferometry shows that the leading edge of the bubbles brings material to the axis of the array. The speed of this material was measured to be >= 3x10(7) cm/s during the wire array implosion. A shock was observed during the collision of the bubbles with the precursor. The Faraday effect indicates current flowing in breaks on the wires. The current switches from the imploding mass to the on-axis plasma column at the beginning of the x-ray pulse. C1 Univ Nevada, Reno, NV 89506 USA. Sandia Natl Labs, Albuquerque, NM 87110 USA. Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England. RP Ivanov, VV (reprint author), Univ Nevada, 5625 Fox Ave, Reno, NV 89506 USA. RI Cowan, Thomas/A-8713-2011 OI Cowan, Thomas/0000-0002-5845-000X NR 18 TC 39 Z9 40 U1 0 U2 2 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 22 PY 2006 VL 97 IS 12 AR 125001 DI 10.1103/PhysRevLett.97.125001 PG 4 WC Physics, Multidisciplinary SC Physics GA 086NN UT WOS:000240680400036 PM 17025975 ER PT J AU Mukerjee, S Xu, C Moore, JE AF Mukerjee, Subroto Xu, Cenke Moore, J. E. TI Topological defects and the superfluid transition of the s=1 spinor condensate in two dimensions SO PHYSICAL REVIEW LETTERS LA English DT Article ID BOSE; SYSTEMS; PHASE AB The s=1 spinor Bose condensate at zero temperature supports ferromagnetic and polar phases that combine magnetic and superfluid ordering. We analyze the topological defects of the polar condensate, correcting previous studies, and show that the polar condensate in two dimensions is unstable at any finite temperature; instead, there is a nematic or paired superfluid phase with algebraic order in exp(2i theta), where theta is the superfluid phase, and no magnetic order. The Kosterlitz-Thouless transition out of this phase is driven by unbinding of half-vortices (the spin-disordered version of the combined spin and phase defects found by Zhou), and the anomalous universal 8T(c)/pi stiffness jump at the transition is confirmed in numerical simulations. The anomalous stiffness jump is a clear experimental signature of this phase and the corresponding phase transition. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Mukerjee, S (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Moore, Joel/O-4959-2016 OI Moore, Joel/0000-0002-4294-5761 NR 20 TC 63 Z9 63 U1 1 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 22 PY 2006 VL 97 IS 12 AR 120406 DI 10.1103/PhysRevLett.97.120406 PG 4 WC Physics, Multidisciplinary SC Physics GA 086NN UT WOS:000240680400006 PM 17025945 ER PT J AU Niklasson, AMN Tymczak, CJ Challacombe, M AF Niklasson, Anders M. N. Tymczak, C. J. Challacombe, Matt TI Time-reversible Born-Oppenheimer molecular dynamics SO PHYSICAL REVIEW LETTERS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; 1ST PRINCIPLES SIMULATIONS; CAR-PARRINELLO; CONVERGENCE ACCELERATION; CLASSICAL TRAJECTORIES; INTEGRATORS; SURFACE; MATRIX; ACCURACY; ORBITALS AB We present a time-reversible Born-Oppenheimer molecular dynamics scheme, based on self-consistent Hartree-Fock or density functional theory, where both the nuclear and the electronic degrees of freedom are propagated in time. We show how a time-reversible adiabatic propagation of the electronic degrees of freedom is possible despite the nonlinearity and incompleteness of the self-consistent field procedure. With a time-reversible lossless propagation the simulated dynamics is stabilized with respect to a systematic long-term energy drift and the number of self-consistency cycles can be kept low thanks to a good initial guess given from the electronic propagation. The proposed molecular dynamics scheme therefore combines a low computational cost with a physically correct time-reversible representation, which preserves a detailed balance between propagation forwards and backwards in time. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden. RP Niklasson, AMN (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. EM amn@lanl.gov NR 32 TC 63 Z9 63 U1 2 U2 13 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 22 PY 2006 VL 97 IS 12 AR 123001 DI 10.1103/PhysRevLett.97.123001 PG 4 WC Physics, Multidisciplinary SC Physics GA 086NN UT WOS:000240680400020 PM 17025959 ER PT J AU Sun, B Zhang, WX Yi, S Chapman, MS You, L AF Sun, B. Zhang, W. X. Yi, S. Chapman, M. S. You, L. TI Dipolar effect in coherent spin mixing of two atoms in a single optical lattice site SO PHYSICAL REVIEW LETTERS LA English DT Article ID BOSE-EINSTEIN CONDENSATION; GASES; PHASE AB We show that atomic dipolar effects are detectable in the system that recently demonstrated two-atom coherent spin dynamics within individual lattice sites of a Mott state. Based on a two-state approximation for the two-atom internal states and relying on a variational approach, we have estimated the spin dipolar effect. Despite the absolute weakness of the dipole-dipole interaction, it is shown that it leads to experimentally observable effects in the spin mixing dynamics. C1 Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. RP Sun, B (reprint author), Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA. RI Zhang, Wenxian/A-4274-2010; Chapman, Michael/C-1929-2014 OI Chapman, Michael/0000-0003-4424-0156 NR 36 TC 8 Z9 8 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD SEP 22 PY 2006 VL 97 IS 12 AR 123201 DI 10.1103/PhysRevLett.97.123201 PG 4 WC Physics, Multidisciplinary SC Physics GA 086NN UT WOS:000240680400023 PM 17025962 ER PT J AU Zhang, LX Wang, EG Xue, QK Zhang, SB Zhang, ZY AF Zhang, Lixin Wang, E. G. Xue, Q. K. Zhang, S. B. Zhang, Zhenyu TI Generalized electron counting in determination of metal-induced reconstruction of compound semiconductor surfaces SO PHYSICAL REVIEW LETTERS LA English DT Article ID INITIO MOLECULAR-DYNAMICS; ATOMIC-STRUCTURE; SEGREGATION; TRANSITION; INTERFACE; ALLOYS; GAAS AB Based on theoretical analysis, first-principles calculations, and experimental observations, we establish a generic guiding principle, embodied in generalized electron counting (GEC), that governs the surface reconstruction of compound semiconductors induced by different metal adsorbates. Within the GEC model, the adsorbates serve as an electron bath, donating or accepting the right number of electrons as the host surface chooses a specific reconstruction that obeys the classic electron-counting model. The predictive power of the GEC model is illustrated for a wide range of metal adsorbates. C1 Chinese Acad Sci, Int Ctr Quantum Struct, Beijing 100080, Peoples R China. Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China. Natl Renewable Energy Lab, Golden, CO 80401 USA. Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Zhang, LX (reprint author), Chinese Acad Sci, Int Ctr Quantum Struct, Beijing 100080, Peoples R China. RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013 OI Zhang, Shengbai/0000-0003-0833-5860 NR 30 TC 35 Z9 38 U1 2 U2 23 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 22 PY 2006 VL 97 IS 12 AR 126103 DI 10.1103/PhysRevLett.97.126103 PG 4 WC Physics, Multidisciplinary SC Physics GA 086NN UT WOS:000240680400043 PM 17025982 ER PT J AU Lee, S Kim, JY Hong, KS Jung, HS Lee, JK Shin, H AF Lee, Sangwook Kim, Jin Young Hong, Kug Sun Jung, Hyun Suk Lee, Jung-Kun Shin, Hyunho TI Enhancement of the photoelectric performance of dye-sensitized solar cells by using a CaCO3-coated TiO2 nanoparticle film as an electrode SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article; Proceedings Paper CT Symposium on Solar Cells and Solar Energy Materials held at the International Materials Research Congress (IMRC 2005) CY AUG 22-25, 2005 CL Cancun, MEXICO DE TiO2; CaCO3; dye-sensitized solar cell; iso-electric point; blocking effect ID CHARGE RECOMBINATION; NANOPOROUS ELECTRODE; EFFICIENCY; CONVERSION; LAYERS; SHELL; OXIDE; CORE AB Core-shell-type nanoparticles with TiO2 cores and CaCO3 shells were applied as the electrode of dye-sensitized solar cells. The performance of the cell was significantly improved (as high as 26.7%) compared to the case when un-coated TiO2 particle film was used as electrode. The improved energy conversion efficiency has been ascribed to (i) enhanced dye adsorption due to the high isoelectric point of the overlayer, and (ii) the prevention of the back electron transfer by the insulating nature of the overlayer. (c) 2006 Elsevier B.V. All rights reserved. C1 Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea. Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. Kangnung Natl Univ, Dept Ceram Engn, Kangnung 210702, South Korea. RP Hong, KS (reprint author), Seoul Natl Univ, Sch Mat Sci & Engn, San 56-1,Shillim Dong, Seoul 151744, South Korea. EM kshongss@plaza.snu.ac.kr RI Jung, Hyun Suk/D-4745-2011; Kim, Jin Young/B-7077-2012; Lee, Sangwook/O-9166-2015; Jung, Hyun Suk/H-3659-2015 OI Kim, Jin Young/0000-0001-7728-3182; Lee, Sangwook/0000-0002-3535-0241; NR 14 TC 40 Z9 40 U1 3 U2 22 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-0248 J9 SOL ENERG MAT SOL C JI Sol. Energy Mater. Sol. Cells PD SEP 22 PY 2006 VL 90 IS 15 SI SI BP 2405 EP 2412 DI 10.1016/j.solmat.2006.03.013 PG 8 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 063XU UT WOS:000239054000030 ER PT J AU Ghan, SJ Easter, RC AF Ghan, S. J. Easter, R. C. TI Impact of cloud-borne aerosol representation on aerosol direct and indirect effects SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID SIZE-SEGREGATED SIMULATION; COMMUNITY CLIMATE MODEL; AIR-QUALITY MODELS; ATMOSPHERIC POLLUTANTS; SULFATE AEROSOLS; CHEMISTRY MODEL; NATIONAL CENTER; GOCART MODEL; WET REMOVAL; SULFUR AB Aerosol particles attached to cloud droplets are much more likely to be removed from the atmosphere and are much less efficient at scattering sunlight than if unattached. Models used to estimate direct and indirect effects of aerosols employ a variety of representations of such cloud-borne particles. Here we use a global aerosol model with a relatively complete treatment of cloud-borne particles to estimate the sensitivity of simulated aerosol, cloud and radiation fields to various approximations to the representation of cloud-borne particles. We find that neglecting transport of cloud-borne particles introduces little error, but that diagnosing cloud-borne particles produces global mean biases of 20% and local errors of up to 40% for aerosol, droplet number, and direct and indirect radiative forcing. Aerosol number, aerosol optical depth and droplet number are significantly underestimated in regions and seasons where and when wet removal is primarily by stratiform rather than convective clouds ( polar regions during winter), but direct and indirect effects are less biased because of the limited sunlight there and then. A treatment that predicts the total mass concentration of cloud-borne particles for each mode yields smaller errors and runs 20% faster than the complete treatment. The errors are much smaller than current estimates of uncertainty in direct and indirect effects of aerosols, which suggests that the treatment of cloud-borne aerosol is not a significant source of uncertainty in estimates of direct and indirect effects. C1 Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA. RP Ghan, SJ (reprint author), Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA. EM steve.ghan@pnl.gov RI Ghan, Steven/H-4301-2011 OI Ghan, Steven/0000-0001-8355-8699 NR 47 TC 38 Z9 38 U1 0 U2 5 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1680-7316 EI 1680-7324 J9 ATMOS CHEM PHYS JI Atmos. Chem. Phys. PD SEP 21 PY 2006 VL 6 BP 4163 EP 4174 PG 12 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 086FO UT WOS:000240659400001 ER PT J AU Du, JC Corrales, LR AF Du, Jincheng Corrales, L. Rene TI Structure, dynamics, and electronic properties of lithium disilicate melt and glass SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SODIUM-SILICATE GLASSES; MOLECULAR-DYNAMICS; AB-INITIO; VITREOUS SILICA; NEUTRON-DIFFRACTION; TETRASILICATE GLASS; RAMAN-SPECTROSCOPY; CATION DYNAMICS; RANGE STRUCTURE; HIGH-PRESSURE AB Ab initio molecular dynamics simulations within the framework of density functional theory have been performed to study the structural, dynamic, and electronic properties of lithium disilicate melt and the glass derived from quenching the melt. It is found that lithium ions have a much higher diffusion coefficient and show different diffusion mechanisms than the network forming silicon and oxygen ions in the melt. The simulated lithium disilicate glass structure has 100% four coordinated silicon, close to theoretical nonbridging oxygen to bridging oxygen ratio (2:3), and Q(n) distributions of 20.8%, 58.4%, and 20.8% for n=2,3,4, respectively. In the melt there are considerable amounts (10%-15%) of silicon coordination defects; however, the average silicon coordination number remains about 4, similar to that in the glass. The lithium ion coordination number increases from 3.7 in the glass to 4.4 in the melt mainly due to the increase of bridging oxygen in the first coordination shell. The bond length and bond angle distributions, vibrational density of states, and static structure factors of the simulated glass were determined where the latter was found to be in good agreement with experimental measurement. Atomic charges were obtained based on Bader and Hirshfeld population analyses [Atoms in Molecule: A Quantum Theory (Oxford University Press, Oxford, 1990); Theor. Chim. Acta 44, 129 (1977)]. The average Bader charges found in lithium disilicate glass were -1.729, 3.419, and 0.915 for oxygen, silicon, and lithium, respectively. The corresponding Hirshfeld charges were -0.307, 0.550, and 0.229. The electronic densities of states of the melt and glass were calculated and compared with those of crystalline lithium disilicate. (c) 2006 American Institute of Physics. C1 Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. RP Corrales, LR (reprint author), Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. EM jincheng.du@pnl.gov; rene.corrales@pnl.gov RI Du, Jincheng/A-8052-2011 NR 68 TC 32 Z9 32 U1 2 U2 24 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 SEP 21 PY 2006 VL 125 IS 11 AR 114702 DI 10.1063/1.2345060 PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 086FH UT WOS:000240658700041 PM 16999496 ER PT J AU Lee, TG Balakrishnan, N Forrey, RC Stancil, PC Schultz, DR Ferland, GJ AF Lee, Teck-Ghee Balakrishnan, N. Forrey, R. C. Stancil, P. C. Schultz, D. R. Ferland, Gary J. TI State-to-state rotational transitions in H-2+H-2 collisions at low temperatures SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID POTENTIAL-ENERGY SURFACE; ATOM-MOLECULE COLLISIONS; VIBRATIONAL-RELAXATION; ROVIBRATIONAL RELAXATION; ELASTIC-SCATTERING; RATE CONSTANTS; CROSS-SECTION; H-2; H-2-MOLECULES; HYDROGEN AB We present quantum mechanical close-coupling calculations of collisions between two hydrogen molecules over a wide range of energies, extending from the ultracold limit to the superthermal region. The two most recently published potential energy surfaces for the H-2-H-2 complex, the so-called Diep-Johnson (DJ) [J. Chem. Phys. 112, 4465 (2000); 113, 3480 (2000)] and Boothroyd-Martin-Keogh-Peterson (BMKP) [J. Chem. Phys. 116, 666 (2002)] surfaces, are quantitatively evaluated and compared through the investigation of rotational transitions in H-2+H-2 collisions within rigid rotor approximation. The BMKP surface is expected to be an improvement, approaching chemical accuracy, over all conformations of the potential energy surface compared to previous calculations of H-2-H-2 interaction. We found significant differences in rotational excitation/deexcitation cross sections computed on the two surfaces in collisions between two para-H-2 molecules. The discrepancy persists over a large range of energies from the ultracold regime to thermal energies and occurs for several low-lying initial rotational levels. Good agreement is found with experiment B. Mate , [J. Chem. Phys. 122, 064313 (2005)] for the lowest rotational excitation process, but only with the use of the DJ potential. Rate coefficients computed with the BMKP potential are an order of magnitude smaller. (c) 2006 American Institute of Physics. C1 Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA. Penn State Univ, Berks Lehigh Valley Coll, Dept Phys, Reading, PA 19610 USA. Univ Georgia, Dept Phys & Astron, Ctr Simulat Phys, Athens, GA 30602 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Lee, TG (reprint author), Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. EM leetg@ornl.gov RI Lee, Teck Ghee/D-5037-2012; OI Lee, Teck Ghee/0000-0001-9472-3194; Ferland, Gary/0000-0003-4503-6333 NR 57 TC 27 Z9 27 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 21 PY 2006 VL 125 IS 11 AR 114302 DI 10.1063/1.2338319 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 086FH UT WOS:000240658700014 PM 16999469 ER PT J AU Yu, HG Sears, TJ AF Yu, Hua-Gen Sears, Trevor J. TI A clue to the diffuse structure in ultraviolet spectra of the GeCl2 A-X transition SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; GERMANIUM DICHLORIDE; SPECTROSCOPY AB Geometries, harmonic vibrational frequencies, and relative electronic energies of the two low-lying electronic states of the GeCl2 dimer have been calculated at the CIS(D) method with a cc-pVTZ basis set. Minima corresponding to three isomers on the ground-state potential energy surface have been characterized. The most stable dimer has a dissociation energy of 0.74 eV and has a trans-(GeCl2)(2) structure. There is also a related, less stable, cis minimum. A third, C-i symmetry, isomer has a binding energy of 0.31 eV. It is found that this C-i isomer has substantial dipole transition strength to the first excited singlet state of the dimer with a vertical excitation energy of 3.33 eV. The transition energy (T-0) between this C-i isomer and the van der Waals complex on the singlet excited state is predicted to be 4.007 eV, or a 1104 cm(-1) blueshift with respect to that of the GeCl2 A-X transition. This finding may explain the diffuse structure which has been observed in the ultraviolet laser-induced fluorescence spectra of GeCl2. (c) 2006 American Institute of Physics. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Yu, HG (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM hgy@bnl.gov; sears@bnl.gov RI Sears, Trevor/B-5990-2013; Yu, Hua-Gen/N-7339-2015 OI Sears, Trevor/0000-0002-5559-0154; NR 16 TC 1 Z9 1 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 21 PY 2006 VL 125 IS 11 AR 114316 DI 10.1063/1.2348883 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 086FH UT WOS:000240658700028 PM 16999483 ER PT J AU Zhou, J Santambrogio, G Brummer, M Moore, DT Meijer, G Neumark, DM Asmis, KR AF Zhou, Jia Santambrogio, Gabriele Bruemmer, Mathias Moore, David T. Meijer, Gerard Neumark, Daniel M. Asmis, Knut R. TI Infrared spectroscopy of hydrated sulfate dianions SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID GAS-PHASE; PHOTODISSOCIATION SPECTROSCOPY; OPTICAL-CONSTANTS; SOLVATION; CLUSTERS; SO42-(H2O)(N); STABILIZATION; STABILITY; SPECTRA; WATER AB We report the first infrared spectra of multiply-charged anions in the gas phase. The spectra of SO42-center dot(H2O)(n), with n=3-24, show four main bands assigned to two vibrations of the dianionic core, the water bending mode, and solvent libration. The triply degenerate SO42- antisymmetric stretch vibration probes the local solvent symmetry, while the solvent librational band is sensitive to the hydrogen bonding network. The spectra and accompanying electronic structure calculations indicate a highly symmetric structure for the n=6 cluster and closure of the first solvation shell at n=12. (c) 2006 American Institute of Physics. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany. RP Zhou, J (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM dneumark@berkeley.edu; asmis@fhi-berlin.mpg.de RI Moore, David/A-7393-2008; Neumark, Daniel/B-9551-2009; Meijer, Gerard/D-2141-2009; Santambrogio, Gabriele/B-1357-2009; Asmis, Knut/N-5408-2014 OI Neumark, Daniel/0000-0002-3762-9473; Santambrogio, Gabriele/0000-0001-5932-7049; Asmis, Knut/0000-0001-6297-5856 NR 27 TC 69 Z9 69 U1 2 U2 30 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 SEP 21 PY 2006 VL 125 IS 11 AR 111102 DI 10.1063/1.2351675 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 086FH UT WOS:000240658700002 PM 16999457 ER PT J AU Steiner, AL Tonse, S Cohen, RC Goldstein, AH Harley, RA AF Steiner, Allison L. Tonse, Shaheen Cohen, Ronald C. Goldstein, Allen H. Harley, Robert A. TI Influence of future climate and emissions on regional air quality in California SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID VOLATILE ORGANIC-COMPOUNDS; UNITED-STATES; AMBIENT OZONE; URBAN; POLLUTION; NITROGEN; PHOTOCHEMISTRY; HYDROCARBONS; TEMPERATURE; SENSITIVITY AB [ 1] Using a chemical transport model simulating ozone concentrations in central California, we evaluate the effects of variables associated with future changes in climate and ozone precursor emissions, including ( 1) increasing temperature; ( 2) increasing atmospheric water vapor; ( 3) increasing biogenic VOC emissions due to temperature; ( 4) projected decreases in anthropogenic NOx, VOC, and CO emissions in California for 2050; and ( 5) the influence of changing ozone, CO, and methane at the western boundary. Climatic changes expected for temperature, atmospheric water vapor, and biogenic VOC emissions each individually cause a 1 - 5% increase in the daily peak ozone. Projected reductions in anthropogenic emissions of 10 - 50% in NOx and 50 - 70% in VOCs and CO have the greatest single effect, reducing ozone by 8 - 15% in urban areas. Changes to the chemical boundary conditions lead to ozone increases of 6% in the San Francisco Bay area and along the west coast but only 1 - 2% inland. Simulations combining climate effects predict that ozone will increase 3 - 10% in various regions of California. This increase is partly offset by projected future emissions reductions, and a combined climate and emissions simulation yields ozone reductions of 3 - 9% in the Central Valley and almost no net change in the San Francisco Bay area. We find that different portions of the model domain have widely varying sensitivity to climate parameters. In particular, the San Francisco Bay region is more strongly influenced by temperature changes than inland regions, indicating that air quality in this region may worsen under future climate regimes. C1 Univ Calif Berkeley, Div Ecosyst Sci, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA. RP Steiner, AL (reprint author), Univ Calif Berkeley, Div Ecosyst Sci, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA. EM asteiner@nature.berkeley.edu RI Cohen, Ronald/A-8842-2011; Goldstein, Allen/A-6857-2011; Steiner, Allison/F-4942-2011; Harley, Robert/C-9177-2016 OI Cohen, Ronald/0000-0001-6617-7691; Goldstein, Allen/0000-0003-4014-4896; Harley, Robert/0000-0002-0559-1917 NR 46 TC 98 Z9 99 U1 3 U2 53 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD SEP 21 PY 2006 VL 111 IS D18 AR D18303 DI 10.1029/2005JD006935 PG 22 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 088RC UT WOS:000240827800004 ER PT J AU Liu, Y Richardson, JD Belcher, JW Kasper, JC Skoug, RM AF Liu, Y. Richardson, J. D. Belcher, J. W. Kasper, J. C. Skoug, R. M. TI Plasma depletion and mirror waves ahead of interplanetary coronal mass ejections SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID PROTON TEMPERATURE ANISOTROPY; SUPERPOSED EPOCH ANALYSIS; SOLAR-WIND; MAGNETIC CLOUDS; MAGNETOSHEATH; MAGNETOPAUSE; INSTABILITY; MECHANISM; LAYER; ACCELERATION AB [ 1] We find that the sheath regions between fast interplanetary coronal mass ejections (ICMEs) and their preceding shocks are often characterized by plasma depletion and mirror wave structures, analogous to planetary magnetosheaths. A case study of these signatures in the sheath of a magnetic cloud ( MC) shows that a plasma depletion layer (PDL) coincides with magnetic field draping around the MC. In the same event, we observe an enhanced thermal anisotropy and plasma beta as well as anticorrelated density and magnetic fluctuations which are signatures of mirror mode waves. We perform a superposed epoch analysis of ACE and Wind plasma and magnetic field data from different classes of ICMEs to illuminate the general properties of these regions. For MCs preceded by shocks, the sheaths have a PDL with an average duration of 6 hours ( corresponding to a spatial span of about 0.07 AU) and a proton temperature anisotropy T-perpendicular to p/ T-parallel to p similar or equal to 1.2 - 1.3, and are marginally unstable to the mirror instability. For ICMEs with preceding shocks which are not MCs, plasma depletion and mirror waves are also present but at a reduced level. ICMEs without shocks are not associated with these features. The differences between the three ICME categories imply that these features depend on the ICME geometry and the extent of upstream solar wind compression by the ICMEs. We discuss the implications of these features for a variety of crucial physical processes including magnetic reconnection, formation of magnetic holes, and energetic particle modulation in the solar wind. C1 MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Liu, Y (reprint author), MIT, Kavli Inst Astrophys & Space Res, Room 37-676A, Cambridge, MA 02139 USA. EM yiuxying@space.mit.edu RI Kasper, Justin/D-1152-2010; OI Kasper, Justin/0000-0002-7077-930X; Liu, Ying/0000-0002-3483-5909 NR 55 TC 44 Z9 44 U1 0 U2 3 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 21 PY 2006 VL 111 IS A9 AR A09108 DI 10.1029/2006JA011723 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 088RT UT WOS:000240829500007 ER PT J AU Miyoshi, YS Jordanova, VK Morioka, A Thomsen, MF Reeves, GD Evans, DS Green, JC AF Miyoshi, Y. S. Jordanova, V. K. Morioka, A. Thomsen, M. F. Reeves, G. D. Evans, D. S. Green, J. C. TI Observations and modeling of energetic electron dynamics during the October 2001 storm SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID RADIATION BELT ELECTRONS; LINEAR DIFFUSION-COEFFICIENTS; ION-CYCLOTRON WAVES; RING CURRENT; RELATIVISTIC ELECTRONS; SUBSTORM DEPENDENCE; INNER MAGNETOSPHERE; MAGNETIC STORM; LARGE-SCALE; POLAR-CAP AB [1] We examined and simulated the dynamics of energetic electrons during the October 2001 magnetic storm with the relativistic RAM electron model for a wide range of energies. The storm had a rapid main phase followed by a day of strong geomagnetic activity that produced a second Dst minimum and then a very quiet recovery phase. During the main phase and the period of intense activity, the observed hot electron flux ( E = 30 keV) increased at low L while decreasing at large L and then decayed abruptly at the beginning of the recovery phase when activity subsided. The flux of subrelativistic ( E = 100 - 300 keV) electrons also increased at low L and decreased at large L during the main phase and the period of intense activity but remained high throughout the recovery phase. In contrast, the relativistic ( E = 300 - 1200 keV) electron flux decreased during the main phase, remained low throughout the period of intense activity, and then increased above prestorm values during the recovery phase in spite of the low activity. The highest energy electron flux ( E > 1200 keV) decreased during the main phase and never recovered to prestorm levels. The numerical simulation was compared with observations. We identified the physical processes which produce the flux variations at the different energies. In the simulation, the hot electrons were convected inward during the main phase, reproducing the observed local time flux asymmetry. The higher-energy electrons, on the other hand, were predominantly transported inward by radial diffusion and not convective motion. The simulation was not able to reproduce the subrelativistic and relativistic electron flux enhancement and spatial expansion as observed during the recovery phase. In the simulation, most of the energization occurred around the main phase and the period of intense activity with negligible transport or flux enhancement during the recovery phase. The discrepancy between the observed and simulated high energy electron flux suggests that only convective transport and radial diffusion cannot fully explain the electron dynamics. An additional mechanism may be necessary to explain enhancements of high energy electron flux during the recovery phase of the storm. C1 Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan. Los Alamos Natl Lab, Los Alamos, NM USA. Tohoku Univ, Planetary Plasma & Atmospher Res Ctr, Sendai, Miyagi 980, Japan. NOAA, Boulder, CO USA. RP Miyoshi, YS (reprint author), Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan. EM miyoshi@stelab.nagoya-u.ac.jp RI Miyoshi, Yoshizumi/B-5834-2015; Reeves, Geoffrey/E-8101-2011 OI Miyoshi, Yoshizumi/0000-0001-7998-1240; Jordanova, Vania/0000-0003-0475-8743; Reeves, Geoffrey/0000-0002-7985-8098 NR 50 TC 60 Z9 60 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 21 PY 2006 VL 111 IS A11 AR A11S02 DI 10.1029/2005JA011351 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 088RW UT WOS:000240829800001 ER PT J AU Waters, T Huang, X Wang, XB Woo, HK O'Hair, RAJ Wedd, AG Wang, LS AF Waters, Tom Huang, Xin Wang, Xue-Bin Woo, Hin-Koon O'Hair, Richard A. J. Wedd, Anthony G. Wang, Lai-Sheng TI Photoelectron Spectroscopy of free multiply charged keggin anions alpha-[PM12O40](3-) (M = Mo, W) in the gas phase SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID ELECTROSPRAY MASS-SPECTROMETRY; ANHYDROUS PHOSPHOTUNGSTIC ACID; MOLECULAR-ORBITAL METHODS; ALPHA-KEGGIN; MAGNETIC-PROPERTIES; ORGANIC-MOLECULES; CRYSTAL-STRUCTURE; AB-INITIO; DFT; HETEROPOLYANIONS AB Two polyoxometalate Keggin-type anions, alpha-PM12O403- (M=Mo, W), were transferred to the gas phase by electrospray; their electronic structure and stability were probed by photoelectron spectroscopy. These triply charged anions were found to be highly stable in the gas phase with large adiabatic electron detachment energies of 1.7 and 2.1 eV for M=Mo and W, respectively. The magnitude of the repulsive Coulomb barrier was measured as similar to 3.4 eV for both anions, providing an experimental estimate for the intramolecular Coulomb repulsion present in these highly charged anions. Density functional theory calculations were carried out and compared with the experimental data, providing insight into the electronic structure and valence molecular orbitals of the two Keggin anions. The calculations indicated that the highest occupied molecular orbital and other frontier orbitals for PM12O403- are localized primarily on the mu(2)-oxo bridging ligands of the polyoxometalate framework, consistent with the reactivity on the mu(2)-oxo sites observed in solution. It was shown that the HOMO of PW12O403- is stabilized relative to that of PMo12O403- by similar to 0.35 eV. The experimental adiabatic electron detachment energies of PM12O403- (i.e., the electron affinities of PM12O402-) are combined with recent calculations on the proton affinity of PM12O403- to yield O-H bond dissociation energies in PM12O39(OH)(2-) as similar to 5.1 eV. C1 Washington State Univ, Dept Phys, Richland, WA 99354 USA. Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. Univ Melbourne, Sch Chem, Parkville, Vic 3010, Australia. Bio21 Mol Sci & Biotechnol Inst, Parkville, Vic 3010, Australia. RP Wang, LS (reprint author), Washington State Univ, Dept Phys, 2710 Univ Dr, Richland, WA 99354 USA. EM ls.wang@pnl.gov NR 48 TC 22 Z9 22 U1 2 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD SEP 21 PY 2006 VL 110 IS 37 BP 10737 EP 10741 DI 10.1021/jp063594m PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 083YP UT WOS:000240496000013 PM 16970365 ER PT J AU Joly, AG Henyk, M Beck, KM Trevisanutto, PE Sushko, PV Hess, WP Shluger, AL AF Joly, Alan G. Henyk, Matthias Beck, Kenneth M. Trevisanutto, Paolo E. Sushko, Peter V. Hess, Wayne P. Shluger, Alexander L. TI Probing electron transfer dynamics at MgO surfaces by Mg-atom desorption SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID EXCIMER-LASER RADIATION; ALKALINE-EARTH OXIDES; GAP SINGLE-CRYSTALS; MAGNESIUM-OXIDE; STATES; EXCITATION; SPECTRA; POWDERS; SITES; FILMS AB Ultraviolet excitation of high surface area MgO films using 4.7 eV femtosecond pulses results in neutral Mg-atom desorption with hyperthermal kinetic energies in the range 0.1-0.4 eV. The Mg-atom hyperthermal energies and power dependences are similar to those previously observed using nanosecond pulsed excitation. Femtosecond two-pulse correlation measurements reveal the existence of different dynamical paths for Mg-atom desorption. One mechanism displays a sub-150 fs time scale and involves the simultaneous or near-simultaenous transition of two electrons to a 3-coordinated Mg(2+) site. Other paths display picosecond time scales that we associate with dynamics following electron trapping at 3-coordinated Mg(2+) surface sites. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. UCL, Dept Phys & Astron, London WC1E 6BT, England. RP Hess, WP (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM wayne.hess@pnl.gov RI Sushko, Peter/F-5171-2013 OI Sushko, Peter/0000-0001-7338-4146 NR 25 TC 11 Z9 11 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD SEP 21 PY 2006 VL 110 IS 37 BP 18093 EP 18096 DI 10.1021/jp064092b PG 4 WC Chemistry, Physical SC Chemistry GA 083YR UT WOS:000240496500006 PM 16970417 ER PT J AU Erdemir, A Donnet, C AF Erdemir, Ali Donnet, Christophe TI Tribology of diamond-like carbon films: recent progress and future prospects SO JOURNAL OF PHYSICS D-APPLIED PHYSICS LA English DT Review ID CHEMICAL-VAPOR-DEPOSITION; PULSED-LASER DEPOSITION; AMORPHOUS-CARBON; WEAR PROPERTIES; DLC COATINGS; THIN-FILMS; SUPERLOW-FRICTION; NANOCOMPOSITE COATINGS; NITRIDE COATINGS; MECHANICAL-PROPERTIES AB During the past two decades, diamond-like carbon (DLC) films have attracted an overwhelming interest from both industry and the research community. These films offer a wide range of exceptional physical, mechanical, biomedical and tribological properties that make them scientifically very fascinating and commercially essential for numerous industrial applications. Mechanically, certain DLC films are extremely hard (as hard as 90 GPa) and resilient, while tribologically they provide some of the lowest known friction and wear coefficients. Their optical and electrical properties are also extraordinary and can be tailored to meet the specific requirements of a given application. Because of their excellent chemical inertness, these films are resistant to corrosive and/or oxidative attacks in acidic and saline media. The combination of such a wide range of outstanding properties in one material is rather uncommon, so DLC can be very useful in meeting the multifunctional application needs of advanced mechanical systems. In fact, these films are now used in numerous industrial applications, including razor blades, magnetic hard discs, critical engine parts, mechanical face seals, scratch-resistant glasses, invasive and implantable medical devices and microelectromechanical systems. DLC films are primarily made of carbon atoms that are extracted or derived from carbon-containing sources, such as solid carbon targets and liquid and gaseous forms of hydrocarbons and fullerenes. Depending on the type of carbon source being used during the film deposition, the type of bonds (i.e. sp(1), sp(2), sp(3)) that hold carbon atoms together in DLC may vary a great deal and can affect their mechanical, electrical, optical and tribological properties. Recent systematic studies of DLC films have confirmed that the presence or absence of certain elemental species, such as hydrogen, nitrogen, sulfur, silicon, tungsten, titanium and fluorine, in their microstructure can also play significant roles in their properties. The main goal of this review paper is to highlight the most recent developments in the synthesis, characterization and application of DLC films. We will also discuss the progress made in understanding the fundamental mechanisms that control their very unique friction and wear behaviours. Novel design concepts and the principles of superlubricity in DLC films are also presented. C1 Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. Univ St Etienne, St Etienne, France. Univ Inst France, Lab Traitement Signal & Instrumentat, UMR 5516, St Etienne, France. RP Erdemir, A (reprint author), Argonne Natl Lab, Div Energy Technol, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 134 TC 348 Z9 358 U1 56 U2 339 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0022-3727 J9 J PHYS D APPL PHYS JI J. Phys. D-Appl. Phys. PD SEP 21 PY 2006 VL 39 IS 18 BP R311 EP R327 DI 10.1088/0022-3727/39/18/R01 PG 17 WC Physics, Applied SC Physics GA 101UU UT WOS:000241767100001 ER PT J AU Iliev, IT Ciardi, B Alvarez, MA Maselli, A Ferrara, A Gnedin, NY Mellema, G Nakamoto, T Norman, ML Razoumov, AO Rijkhorst, EJ Ritzerveld, J Shapiro, PR Susa, H Umemura, M Whalen, DJ AF Iliev, Ilian T. Ciardi, Benedetta Alvarez, Marcelo A. Maselli, Antonella Ferrara, Andrea Gnedin, Nickolay Y. Mellema, Garrelt Nakamoto, Taishi Norman, Michael L. Razoumov, Alexei O. Rijkhorst, Erik-Jan Ritzerveld, Jelle Shapiro, Paul R. Susa, Hajime Umemura, Masayuki Whalen, Daniel J. TI Cosmological radiative transfer codes comparison project - I. The static density field tests SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE radiative transfer; ISM : bubbles; H (II) regions; galaxies : formation; intergalactic medium; cosmology : theory ID SMOOTHED PARTICLE HYDRODYNAMICS; PHOTOIONIZATION CROSS-SECTIONS; COSMIC REIONIZATION; TOTAL RECOMBINATION; IONIZING-RADIATION; HIGH-RESOLUTION; PHYSICAL STATE; IONIZATION; IONS; COEFFICIENTS AB Radiative transfer (RT) simulations are now at the forefront of numerical astrophysics. They are becoming crucial for an increasing number of astrophysical and cosmological problems; at the same time their computational cost has come within reach of currently available computational power. Further progress is retarded by the considerable number of different algorithms (including various flavours of ray tracing and moment schemes) developed, which makes the selection of the most suitable technique for a given problem a non-trivial task. Assessing the validity ranges, accuracy and performances of these schemes is the main aim of this paper, for which we have compared 11 independent RT codes on five test problems: (0) basic physics; (1) isothermal H II region expansion; (2) H II region expansion with evolving temperature; (3) I-front trapping and shadowing by a dense clump and (4) multiple sources in a cosmological density field. The outputs of these tests have been compared and differences analysed. The agreement between the various codes is satisfactory although not perfect. The main source of discrepancy appears to reside in the multifrequency treatment approach, resulting in different thicknesses of the ionized-neutral transition regions and the temperature structure. The present results and tests represent the most complete benchmark available for the development of new codes and improvement of existing ones. To further this aim all test inputs and outputs are made publicly available in digital form. C1 Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada. Max Planck Inst Astrophys, D-85741 Garching, Germany. Univ Texas, Dept Astron, Austin, TX 78712 USA. SISSA, Int Sch Adv Studies, I-34014 Trieste, Italy. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. ASTRON, NL-7990 AA Dwingeloo, Netherlands. Sterrewacht Leiden, NL-2300 RA Leiden, Netherlands. Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058577, Japan. Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Rikkyo Univ, Coll Sci, Dept Phys, Toshima Ku, Tokyo 171, Japan. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Iliev, IT (reprint author), Univ Toronto, Canadian Inst Theoret Astrophys, 60 St George St, Toronto, ON M5S 3H8, Canada. EM iliev@cita.utoronto.ca RI Ferrara, Andrea/A-4357-2011; Mellema, Garrelt/K-4962-2014; Ciardi, Benedetta/N-7625-2015; OI Mellema, Garrelt/0000-0002-2512-6748; Iliev, Ilian/0000-0002-5174-1365 NR 71 TC 133 Z9 133 U1 0 U2 4 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 SEP 21 PY 2006 VL 371 IS 3 BP 1057 EP 1086 DI 10.1111/j.1365-2966.2006.10775.x PG 30 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 081XD UT WOS:000240350000003 ER PT J AU Howell, DA Sullivan, M Nugent, PE Ellis, RS Conley, AJ Le Borgne, D Carlberg, RG Guy, J Balam, D Basa, S Fouchez, D Hook, IM Hsiao, EY Neill, JD Pain, R Perrett, KM Pritchet, CJ AF Howell, D. Andrew Sullivan, Mark Nugent, Peter E. Ellis, Richard S. Conley, Alexander J. Le Borgne, Damien Carlberg, Raymond G. Guy, Julien Balam, David Basa, Stephane Fouchez, Dominique Hook, Isobel M. Hsiao, Eric Y. Neill, James D. Pain, Reynald Perrett, Kathryn M. Pritchet, Christopher J. TI The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star SO NATURE LA English DT Article ID HUBBLE CONSTANT; MODELS; PHYSICS AB The accelerating expansion of the Universe, and the need for dark energy, were inferred from observations(1,2) of type Ia supernovae. There is a consensus that type Ia supernovae are thermonuclear explosions that destroy carbon - oxygen white dwarf stars that have accreted matter from a companion star(3), although the nature of this companion remains uncertain. These supernovae are thought to be reliable distance indicators because they have a standard amount of fuel and a uniform trigger: they are predicted to explode when the mass of the white dwarf nears the Chandrase-khar mass(4) of 1.4 solar masses (M-.). Here we show that the high-redshift supernova SNLS-03D3bb has an exceptionally high luminosity and low kinetic energy that both imply a super-Chandrasekhar-mass progenitor. Super-Chandrasekhar-mass supernovae should occur preferentially in a young stellar population, so this may provide an explanation for the observed trend that overluminous type Ia supernovae occur only in 'young' environments(5,6). As this supernova does not obey the relations that allow type Ia supernovae to be calibrated as standard candles, and as no counterparts have been found at low redshift, future cosmology studies will have to consider possible contamination from such events. C1 Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H8, Canada. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. CALTECH, Pasadena, CA 91125 USA. CEA Saclay, Serv Astrophys, DAPNIA, F-91191 Gif Sur Yvette, France. CNRS, IN2P3, LPNHE, F-75005 Paris, France. Univ Paris 06, F-75005 Paris, France. Univ Paris 07, F-75005 Paris, France. Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada. CNRS, LAM, F-13376 Marseille 12, France. CNRS, IN2P3, CPPM, F-13288 Marseille 9, France. Univ Aix Marseille 2, F-13288 Marseille 9, France. Univ Oxford, Oxford OX1 3RH, England. RP Howell, DA (reprint author), Univ Toronto, Dept Astron & Astrophys, 60 St George St, Toronto, ON M5S 3H8, Canada. EM howell@astro.utoronto.ca RI Carlberg, Raymond/I-6947-2012; OI Carlberg, Raymond/0000-0002-7667-0081; Sullivan, Mark/0000-0001-9053-4820 NR 30 TC 248 Z9 249 U1 4 U2 14 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD SEP 21 PY 2006 VL 443 IS 7109 BP 308 EP 311 DI 10.1038/nature05103 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 085RL UT WOS:000240622000039 PM 16988705 ER PT J AU Gao, F Bacon, DJ Lai, WS Kurtz, RJ AF Gao, F. Bacon, D. J. Lai, W. S. Kurtz, R. J. TI Low-energy sputtering events at free surfaces near anti-phase and grain boundaries in Ni3Al SO PHILOSOPHICAL MAGAZINE LA English DT Article ID POINT-DEFECT PROPERTIES; DISPLACEMENT CASCADES; COMPUTER-SIMULATION; MOLECULAR-DYNAMICS; THRESHOLD AB Atomic recoil events on free surfaces orthogonal to two different anti-phase boundaries (APBs) and two grain boundaries (GBs) in Ni3Al are simulated using molecular dynamics methods. The threshold energy for sputtering, E-sp, and adatom creation, E-ad, are determined as a function of recoil direction. The study is relevant to FEG STEM ( a scanning transmission electron microscope fitted with a field emission gun) experiments on preferential Al sputtering and/or enhancement of the Ni-Al ratio near boundaries. Surfaces intersected by {110} and {111} APBs have minimum E-sp of 6.5 eV for an Al atom on the Ni-Al mixed ( M) surface, which is close to the value of 6.0 eV for a perfect M surface. High values of Esp of an Al atom generally occur at a large angle to the surface normal and depend strongly on the detailed atomic configuration of the surface. The mean Esp, averaged over all recoil directions, reveals that APBs have a small effect on the threshold sputtering. However, the results for Ead imply that an electron beam could create more Al adatoms on surfaces intersected by APBs than on those without. The equilibrium, minimum energy structures for a ( 001) surface intersected by either Sigma 5[001](210) or Sigma 25[001](340) symmetric tilt grain boundaries are computed. Esp for surface Al atoms near these GBs increases monotonically with increasing recoil angle to the surface normal, with a minimum value, which is only about 1 eV different from that obtained for a perfect surface. Temperature up to 300K has no effect on this result. It is concluded that the experimental observations of preferential sputtering are due to effects beyond those for Esp studied here. Possible reasons for this are discussed. C1 Univ Liverpool, Dept Engn, Liverpool L69 3BX, Merseyside, England. Pacific NW Natl Lab, Richland, WA 99352 USA. Tsing Hua Univ, Dept Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China. RP Gao, F (reprint author), Univ Liverpool, Dept Engn, Liverpool L69 3BX, Merseyside, England. EM fei.gao@pnl.gov RI Gao, Fei/H-3045-2012 NR 20 TC 2 Z9 2 U1 0 U2 2 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 SEP 21 PY 2006 VL 86 IS 27 BP 4243 EP 4258 DI 10.1080/14786430500409560 PG 16 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 062WT UT WOS:000238977600005 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 Anzelc, MS Arnoud, Y Arov, M Askew, A Asman, B Jesus, ACSA Atramentov, O Autermann, C Avila, C Ay, C Badaud, F Baden, A Bagby, L Baldin, B Bandurin, DV Banerjee, P Banerjee, S Barberis, E Bargassa, P Baringer, P Barnes, C Barreto, J Bartlett, JF Bassler, U Bauer, D Bean, A Begalli, M Begel, M Belanger-Champagne, C Bellantoni, L Bellavance, A Benitez, JA Beri, SB Bernardi, G Bernhard, R Berntzon, L 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 Bloom, K Blumenschein, U Boehnlein, A Boeriu, O Bolton, TA Borissov, G Bos, K Bose, T Brandt, A Brock, R Brooijmans, G Bross, A Brown, D Buchanan, NJ Buchholz, D Buehler, M Buescher, V Burdin, S Burke, S Burnett, TH Busato, E Buszello, CP Butler, JM Calfayan, P Calvet, S 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 Chevallier, F Cho, DK Choi, S Choudhary, B Christofek, L Claes, D Clement, B Clement, C Coadou, Y Cooke, M Cooper, WE Coppage, D Corcoran, M Cousinou, MC Cox, B Crepe-Renaudin, S Cutts, D Cwiok, M da Motta, H Das, A Das, M Davies, B Davies, G Davis, GA De, K de Jong, P de Jong, SJ De la Cruz-Burelo, E Martins, CDO Degenhardt, JD Deliot, F Demarteau, M Demina, R Demine, P Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Doidge, M Dominguez, A Dong, H 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 Estrada, J Evans, H Evdokimov, A Evdokimov, VN Fatakia, SN Feligioni, L Ferapontov, AV Ferbel, T Fiedler, F Filthaut, F Fisher, W Fisk, HE Fleck, I Ford, M 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, A Gay, P Gele, D Gelhaus, R Gerber, CE Gershtein, Y Gillberg, D Ginther, G Gollub, N Gomez, B Goussiou, A Grannis, PD Greenlee, H Greenwood, ZD Gregores, EM Grenier, G Gris, P Grivaz, JF Grunendahl, S Grunewald, MW Guo, F Guo, J Gutierrez, G Gutierrez, P Haas, A Hadley, NJ Haefner, P Hagopian, S Haley, J Hall, I Hall, RE Han, L Hanagaki, K Harder, K Harel, A Harrington, R Hauptman, JM Hauser, R Hays, J Hebbeker, T Hedin, D Hegeman, JG Heinmiller, JM Heinson, AP Heintz, U Hensel, C Hesketh, G Hildreth, MD Hirosky, R Hobbs, JD Hoeneisen, B Hoeth, H Hohlfeld, M Hong, SJ Hooper, R Houben, P Hu, Y Hubacek, Z Hynek, V Iashvili, I Illingworth, R Ito, AS Jabeen, S Jaffre, M Jain, S Jakobs, K Jarvis, C Jenkins, A Jesik, R Johns, K Johnson, C Johnson, M Jonckheere, A Jonsson, P Juste, A Kafer, D Kahn, S Kajfasz, E Kalinin, AM Kalk, JM Kalk, JR Kappler, S Karmanov, D Kasper, J Kasper, P Katsanos, I Kau, D Kaur, R Kehoe, R Kermiche, S Kesisoglou, S Khalatyan, N Khanov, A Kharchilava, A Kharzheev, YM Khatidze, D Kim, H Kim, TJ Kirby, MH Klima, B Kohli, JM Konrath, JP Kopal, M Korablev, VM Kotcher, J Kothari, B Koubarovsky, A Kozelov, AV Kozminski, J Krop, D Kryemadhi, A Kuhl, T Kumar, A Kunori, S Kupco, A Kurca, T Kvita, J Lager, S Lammers, S Landsberg, G Lazoflores, J Le Bihan, AC Lebrun, P Lee, WM Leflat, A Lehner, F Lesne, V Leveque, J Lewis, P Li, J Li, QZ Lima, JGR Lincoln, D Linnemann, J Lipaev, VV Lipton, R Liu, Z Lobo, L Lobodenko, A Lokajicek, M Lounis, A Love, P Lubatti, HJ 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 McCarthy, R Meder, D Melnitchouk, A Mendes, A Mendoza, L Merkin, M Merritt, KW Meyer, A Meyer, J Michaut, M Miettinen, H Millet, T Mitrevski, J Molina, J Mondal, NK Monk, J Moore, RW Moulik, T Muanza, GS Mulders, M Mulhearn, M Mundim, L Mutaf, YD Nagy, E Naimuddin, M Narain, M Naumann, NA Neal, HA Negret, JP Nelson, S Neustroev, P Noeding, C Nomerotski, A Novaes, SF Nunnemann, T O'Dell, V O'Neil, DC Obrant, G Oguri, V Oliveira, N Oshima, N Otec, R Otero y Garzon, GJ Owen, M Padley, P Parashar, N Park, SJ Park, SK Parsons, J Partridge, R Parua, N Patwa, A Pawloski, G Perea, PM Perez, E Peters, K Petroff, P Petteni, M Piegaia, R Pleier, MA Podesta-Lerma, PLM Podstavkov, VM Pogorelov, Y Pol, ME Pompos, A Pope, BG Popov, AV da Silva, WLP Prosper, HB Protopopescu, S Qian, J Quadt, A Quinn, B Rani, KJ Ranjan, K Ratoff, PN Renkel, P 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 Scheglov, Y 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 Siccardi, V Sidwell, RA Simak, V Sirotenko, V Skubic, P Slattery, P Smith, RP Snow, GR Snow, J Snyder, S Soldner-Rembold, S Song, X Sonnenschein, L Sopczak, A Sosebee, M Soustruznik, K Souza, M Spurlock, B Stark, J Steele, J Stolin, V Stone, A Stoyanova, DA Strandberg, J Strang, MA Strauss, M Strohmer, R Strom, D Strovink, M Stutte, L Surnowidagdo, S Sznajder, A Talby, M Tamburello, P Taylor, W Telford, P Temple, J Tiller, B Titov, M Tokmenin, VV Tomoto, M Toole, T Torchiani, I Towers, S Trefzger, T Trincaz-Duvoid, S Tsybychev, D Tuchming, B Tully, C Turcot, AS Tuts, PM Unalan, R Uvarov, L Uvarov, S Uzunyan, S Vachon, B van den Berg, PJ 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 Vint, P Vlimant, JR Von Toerne, E Voutilainen, M Vreeswijk, M Wahl, HD Wang, L Warchol, J Watts, G Wayne, M Weber, M Weerts, H Wermes, N Wetstein, M White, A Wicke, D Wilson, GW Wimpenny, SJ Wobisch, M Womersley, J Wood, DR Wyatt, TR Xie, Y Xuan, N Yacoob, S Yamada, R Yan, M Yasuda, T Yatsunenko, YA Yip, K Yoo, HD Youn, SW Yu, C Yu, J Yurkewicz, A Zatserklyaniy, A Zeitnitz, C Zhang, D Zhao, T Zhou, B Zhu, J Zielinski, M Zieminska, D Zieminski, A Zutshi, V Zverev, EG AF Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S. Adams, M. Adams, T. Agelou, M. Agram, J. -L. Ahn, S. H. Ahsan, M. Alexeev, G. D. Alkhazov, G. Alton, A. Alverson, G. Alves, G. A. Anastasoaie, M. Andeen, T. Anderson, S. Andrieu, B. Anzelc, M. S. Arnoud, Y. Arov, M. Askew, A. Asman, B. Jesus, A. C. S. Assis Atramentov, O. Autermann, C. Avila, C. Ay, C. Badaud, F. Baden, A. Bagby, L. Baldin, B. Bandurin, D. V. Banerjee, P. Banerjee, S. Barberis, E. Bargassa, P. Baringer, P. Barnes, C. Barreto, J. Bartlett, J. F. Bassler, U. Bauer, D. Bean, A. Begalli, M. Begel, M. Belanger-Champagne, C. Bellantoni, L. Bellavance, A. Benitez, J. A. Beri, S. B. Bernardi, G. Bernhard, R. Berntzon, L. Bertram, I. Besancon, M. Beuselinck, R. Bezzubov, V. A. Bhat, P. C. Bhatnagar, V. Binder, M. Biscarat, C. Black, K. M. Blackler, I. Blazey, G. Blekman, F. Blessing, S. Bloch, D. Bloom, K. Blumenschein, U. Boehnlein, A. Boeriu, O. Bolton, T. A. Borissov, G. Bos, K. Bose, T. Brandt, A. Brock, R. Brooijmans, G. Bross, A. Brown, D. Buchanan, N. J. Buchholz, D. Buehler, M. Buescher, V. Burdin, S. Burke, S. Burnett, T. H. Busato, E. Buszello, C. P. Butler, J. M. Calfayan, P. Calvet, S. Cammin, J. Caron, S. Carvalho, W. Casey, B. C. K. Cason, N. M. Castilla-Valdez, H. Chakrabarti, S. Chakraborty, D. Chan, K. M. Chandra, A. Chapin, D. Charles, F. Cheu, E. Chevallier, F. Cho, D. K. Choi, S. Choudhary, B. Christofek, L. Claes, D. Clement, B. Clement, C. Coadou, Y. Cooke, M. Cooper, W. E. Coppage, D. Corcoran, M. Cousinou, M. -C. Cox, B. Crepe-Renaudin, S. Cutts, D. Cwiok, M. da Motta, H. Das, A. Das, M. Davies, B. Davies, G. Davis, G. A. De, K. de Jong, P. de Jong, S. J. De la Cruz-Burelo, E. Martins, C. De Oliveira Degenhardt, J. D. Deliot, F. Demarteau, M. Demina, R. Demine, P. Denisov, D. Denisov, S. P. Desai, S. Diehl, H. T. Diesburg, M. Doidge, M. Dominguez, A. Dong, H. Dudko, L. V. Duflot, L. Dugad, S. R. Duperrin, A. Dyer, J. Dyshkant, A. Eads, M. Edmunds, D. Edwards, T. Ellison, J. Elmsheuser, J. Elvira, V. D. Eno, S. Ermolov, P. Estrada, J. Evans, H. Evdokimov, A. Evdokimov, V. N. Fatakia, S. N. Feligioni, L. Ferapontov, A. V. Ferbel, T. Fiedler, F. Filthaut, F. Fisher, W. Fisk, H. E. Fleck, I. Ford, M. Fortner, M. Fox, H. Fu, S. Fuess, S. Gadfort, T. Galea, C. F. Gallas, E. Galyaev, E. Garcia, C. Garcia-Bellido, A. Gardner, J. Gavrilov, V. Gay, A. Gay, P. Gele, D. Gelhaus, R. Gerber, C. E. Gershtein, Y. Gillberg, D. Ginther, G. Gollub, N. Gomez, B. Goussiou, A. Grannis, P. D. Greenlee, H. Greenwood, Z. D. Gregores, E. M. Grenier, G. Gris, Ph. Grivaz, J. -F. Grunendahl, S. Grunewald, M. W. Guo, F. Guo, J. Gutierrez, G. Gutierrez, P. Haas, A. Hadley, N. J. Haefner, P. Hagopian, S. Haley, J. Hall, I. Hall, R. E. Han, L. Hanagaki, K. Harder, K. Harel, A. Harrington, R. Hauptman, J. M. Hauser, R. Hays, J. Hebbeker, T. Hedin, D. Hegeman, J. G. Heinmiller, J. M. Heinson, A. P. Heintz, U. Hensel, C. Hesketh, G. Hildreth, M. D. Hirosky, R. Hobbs, J. D. Hoeneisen, B. Hoeth, H. Hohlfeld, M. Hong, S. J. Hooper, R. Houben, P. Hu, Y. Hubacek, Z. Hynek, V. Iashvili, I. Illingworth, R. Ito, A. S. Jabeen, S. Jaffre, M. Jain, S. Jakobs, K. Jarvis, C. Jenkins, A. Jesik, R. Johns, K. Johnson, C. Johnson, M. Jonckheere, A. Jonsson, P. Juste, A. Kaefer, D. Kahn, S. Kajfasz, E. Kalinin, A. M. Kalk, J. M. Kalk, J. R. Kappler, S. Karmanov, D. Kasper, J. Kasper, P. Katsanos, I. Kau, D. Kaur, R. Kehoe, R. Kermiche, S. Kesisoglou, S. Khalatyan, N. Khanov, A. Kharchilava, A. Kharzheev, Y. M. Khatidze, D. Kim, H. Kim, T. J. Kirby, M. H. Klima, B. Kohli, J. M. Konrath, J. -P. Kopal, M. Korablev, V. M. Kotcher, J. Kothari, B. Koubarovsky, A. Kozelov, A. V. Kozminski, J. Krop, D. Kryemadhi, A. Kuhl, T. Kumar, A. Kunori, S. Kupco, A. Kurca, T. Kvita, J. Lager, S. Lammers, S. Landsberg, G. Lazoflores, J. Le Bihan, A. -C. Lebrun, P. Lee, W. M. Leflat, A. Lehner, F. Lesne, V. Leveque, J. Lewis, P. Li, J. Li, Q. Z. Lima, J. G. R. Lincoln, D. Linnemann, J. Lipaev, V. V. Lipton, R. Liu, Z. Lobo, L. Lobodenko, A. Lokajicek, M. Lounis, A. Love, P. Lubatti, H. J. Lynker, M. Lyon, A. L. Maciel, A. K. A. Madaras, R. J. Maettig, P. Magass, C. Magerkurth, A. Magnan, A. -M. Makovec, N. Mal, P. K. Malbouisson, H. B. Malik, S. Malyshev, V. L. Mao, H. S. Maravin, Y. Martens, M. Mattingly, S. E. K. McCarthy, R. Meder, D. Melnitchouk, A. Mendes, A. Mendoza, L. Merkin, M. Merritt, K. W. Meyer, A. Meyer, J. Michaut, M. Miettinen, H. Millet, T. Mitrevski, J. Molina, J. Mondal, N. K. Monk, J. Moore, R. W. Moulik, T. Muanza, G. S. Mulders, M. Mulhearn, M. Mundim, L. Mutaf, Y. D. Nagy, E. Naimuddin, M. Narain, M. Naumann, N. A. Neal, H. A. Negret, J. P. Nelson, S. Neustroev, P. Noeding, C. Nomerotski, A. Novaes, S. F. Nunnemann, T. O'Dell, V. O'Neil, D. C. Obrant, G. Oguri, V. Oliveira, N. Oshima, N. Otec, R. Otero y Garzon, G. J. Owen, M. Padley, P. Parashar, N. Park, S. -J. Park, S. K. Parsons, J. Partridge, R. Parua, N. Patwa, A. Pawloski, G. Perea, P. M. Perez, E. Peters, K. Petroff, P. Petteni, M. Piegaia, R. Pleier, M. -A. Podesta-Lerma, P. L. M. Podstavkov, V. M. Pogorelov, Y. Pol, M. -E Pompos, A. Pope, B. G. Popov, A. V. Prado da Silva, W. L. Prosper, H. B. Protopopescu, S. Qian, J. Quadt, A. Quinn, B. Rani, K. J. Ranjan, K. Ratoff, P. N. Renkel, P. Reucroft, S. Rijssenbeek, M. Ripp-Baudot, I. Rizatdinova, F. Robinson, S. Rodrigues, R. F. Royon, C. Rubinov, P. Ruchti, R. Rud, V. I. Sajot, G. Sanchez-Hernandez, A. Sanders, M. P. Santoro, A. Savage, G. Sawyer, L. Scanlon, T. Schaile, D. Schamberger, R. D. Scheglov, Y. Schellman, H. Schieferdecker, P. Schmitt, C. Schwanenberger, C. Schwartzman, A. Schwienhorst, R. Sengupta, S. Severini, H. Shabalina, E. Shamim, M. Shary, V. Shchukin, A. A. Shephard, W. D. Shivpuri, R. K. Shpakov, D. Siccardi, V. Sidwell, R. A. Simak, V. Sirotenko, V. Skubic, P. Slattery, P. Smith, R. P. Snow, G. R. Snow, J. Snyder, S. Soldner-Rembold, S. Song, X. Sonnenschein, L. Sopczak, A. Sosebee, M. Soustruznik, K. Souza, M. Spurlock, B. Stark, J. Steele, J. Stolin, V. Stone, A. Stoyanova, D. A. Strandberg, J. Strang, M. A. Strauss, M. Stroehmer, R. Strom, D. Strovink, M. Stutte, L. Surnowidagdo, S. Sznajder, A. Talby, M. Tamburello, P. Taylor, W. Telford, P. Temple, J. Tiller, B. Titov, M. Tokmenin, V. V. Tomoto, M. Toole, T. Torchiani, I. Towers, S. Trefzger, T. Trincaz-Duvoid, S. Tsybychev, D. Tuchming, B. Tully, C. Turcot, A. S. Tuts, P. M. Unalan, R. Uvarov, L. Uvarov, S. Uzunyan, S. Vachon, B. van den Berg, P. J. Van Kooten, R. van Leeuwen, W. M. Varelas, N. Varnes, E. W. Vartapetian, A. Vasilyev, I. A. Vaupel, M. Verdier, P. Vertogradov, L. S. Verzocchi, M. Villeneuve-Seguier, F. Vint, P. Vlimant, J. -R. Von Toerne, E. Voutilainen, M. Vreeswijk, M. Wahl, H. D. Wang, L. Warchol, J. Watts, G. Wayne, M. Weber, M. Weerts, H. Wermes, N. Wetstein, M. White, A. Wicke, D. Wilson, G. W. Wimpenny, S. J. Wobisch, M. Womersley, J. Wood, D. R. Wyatt, T. R. Xie, Y. Xuan, N. Yacoob, S. Yamada, R. Yan, M. Yasuda, T. Yatsunenko, Y. A. Yip, K. Yoo, H. D. Youn, S. W. Yu, C. Yu, J. Yurkewicz, A. Zatserklyaniy, A. Zeitnitz, C. Zhang, D. Zhao, T. Zhou, B. Zhu, J. Zielinski, M. Zieminska, D. Zieminski, A. Zutshi, V. Zverev, E. G. TI Search for scalar leptoquarks in the acoplanar jet topology in p(p)over-bar collisions at root s=1.96 TeV SO PHYSICS LETTERS B LA English DT Article ID TEVATRON C1 CNRS, Lab Accelerateur Lineaire, IN2P3, F-91405 Orsay, France. Univ Buenos Aires, RA-1053 Buenos Aires, DF, Argentina. Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil. Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil. Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil. Univ Alberta, Edmonton, AB T6G 2M7, Canada. Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada. York Univ, Toronto, ON M3J 2R7, Canada. McGill Univ, Montreal, PQ H3A 2T5, Canada. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Sci & Technol China, Hefei 230026, Peoples R China. Univ Los Andes, Bogota, Colombia. Charles Univ, Ctr Particle Phys, Prague, Czech Republic. Czech Tech Univ, CR-16635 Prague, Czech Republic. Acad Sci Czech Republ, Inst Phys, Ctr Particle Phys, Prague, Czech Republic. Univ San Francisco Quito, Quito, Ecuador. Univ Clermont Ferrand, CNRS, IN2P3, Phys Corpusculaire Lab, Clermont Ferrand, France. Univ Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol, F-38042 Grenoble, France. Univ Mediterranee, CNRS, IN2P3, CPPM, Marseille, France. Univ Paris 06, CNRS, IN2P3, LPNHE, Paris, France. Univ Paris 07, CNRS, IN2P3, LPNHE, Paris, France. CEA, Serv Phys Particules, DAPNIA, Saclay, France. Univ Strasbourg 1, CNRS, IN2P3, IPHC, Strasbourg, France. Univ Haute Alsace, Mulhouse, France. Univ Lyon 1, CNRS, IN2P3, Inst Nucl Phys, F-69622 Villeurbanne, France. Rhein Westfal TH Aachen, Inst Phys 3, D-5100 Aachen, Germany. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Freiburg, Inst Phys, Freiburg, Germany. Univ Mainz, Inst Phys, D-6500 Mainz, Germany. Univ Munich, Munich, Germany. Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany. Panjab Univ, Chandigarh 160014, India. Univ Delhi, Delhi 110007, India. Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. Univ Coll Dublin, Dublin 2, Ireland. Korea Univ, Korea Detector Lab, Seoul 136701, South Korea. Sungkyunkwan Univ, Suwon 440746, South Korea. CINVESTAV, Mexico City 14000, DF, Mexico. FOM, Inst NIKHEF, NL-1098 SJ Amsterdam, Netherlands. Univ Amsterdam, NIKHEF, NL-1012 WX Amsterdam, Netherlands. Radboud Univ Nijmegen, NIKHEF, Nijmegen, Netherlands. Joint Inst Nucl Res, Dubna, Russia. Inst Theoret & Expt Phys, Moscow 117259, Russia. Moscow MV Lomonosov State Univ, Moscow, Russia. Inst High Energy Phys, Protvino, Russia. Petersburg Nucl Phys Inst, St Petersburg, Russia. Lund Univ, Lund, Sweden. Royal Inst Technol, S-10044 Stockholm, Sweden. Stockholm Univ, S-10691 Stockholm, Sweden. Uppsala Univ, Uppsala, Sweden. Univ Zurich, Inst Phys, Zurich, Switzerland. Univ Lancaster, Lancaster LA1 4YW, England. Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England. Univ Manchester, Manchester M13 9PL, Lancs, England. Univ Arizona, Tucson, AZ 85721 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. Calif State Univ Fresno, Fresno, CA 93740 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Florida State Univ, Tallahassee, FL 32306 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Illinois, Chicago, IL 60607 USA. No Illinois Univ, De Kalb, IL 60115 USA. Northwestern Univ, Evanston, IL 60208 USA. Indiana Univ, Bloomington, IN 47405 USA. Univ Notre Dame, Notre Dame, IN 46556 USA. Purdue Univ Calumet, Hammond, IN 46323 USA. Iowa State Univ Sci & Technol, Ames, IA 50011 USA. Univ Kansas, Lawrence, KS 66045 USA. Kansas State Univ, Manhattan, KS 66506 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Univ Maryland, College Pk, MD 20742 USA. Boston Univ, Boston, MA 02215 USA. Northeastern Univ, Boston, MA 02115 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ Mississippi, University, MS 38677 USA. Univ Nebraska, Lincoln, NE 68588 USA. Princeton Univ, Princeton, NJ 08544 USA. SUNY Buffalo, Buffalo, NY 14260 USA. Columbia Univ, New York, NY 10027 USA. Univ Rochester, Rochester, NY 14627 USA. SUNY Stony Brook, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Langston Univ, Langston, OK 73050 USA. Univ Oklahoma, Norman, OK 73019 USA. Oklahoma State Univ, Stillwater, OK 74078 USA. Brown Univ, Providence, RI 02912 USA. Univ Texas, Arlington, TX 76019 USA. So Methodist Univ, Dallas, TX 75275 USA. Rice Univ, Houston, TX 77005 USA. Univ Virginia, Charlottesville, VA 22901 USA. Univ Washington, Seattle, WA 98195 USA. RP Grivaz, JF (reprint author), CNRS, Lab Accelerateur Lineaire, IN2P3, F-91405 Orsay, France. EM grivaz@lal.in2p3.fr RI Mundim, Luiz/A-1291-2012; Yip, Kin/D-6860-2013; Telford, Paul/B-6253-2011; De, Kaushik/N-1953-2013; Nomerotski, Andrei/A-5169-2010; Shivpuri, R K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; Fisher, Wade/N-4491-2013; Oguri, Vitor/B-5403-2013; Dudko, Lev/D-7127-2012; Leflat, Alexander/D-7284-2012; Merkin, Mikhail/D-6809-2012; Novaes, Sergio/D-3532-2012; Alves, Gilvan/C-4007-2013; Deliot, Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; KIM, Tae Jeong/P-7848-2015; Sznajder, Andre/L-1621-2016 OI Mundim, Luiz/0000-0001-9964-7805; Yip, Kin/0000-0002-8576-4311; De, Kaushik/0000-0002-5647-4489; Dudko, Lev/0000-0002-4462-3192; Novaes, Sergio/0000-0003-0471-8549; Sharyy, Viatcheslav/0000-0002-7161-2616; KIM, Tae Jeong/0000-0001-8336-2434; Sznajder, Andre/0000-0001-6998-1108 NR 18 TC 9 Z9 9 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD SEP 21 PY 2006 VL 640 IS 5-6 BP 230 EP 237 DI 10.1016/j.physletb.2006.08.020 PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 088OD UT WOS:000240820100002 ER PT J AU Song, J Apra, E Khalt, YG Hoffmann, MR Kowalski, K AF Song, J. Apra, E. Khalt, Y. G. Hoffmann, M. R. Kowalski, K. TI High-level ab initio calculations on the NiO2 system SO CHEMICAL PHYSICS LETTERS LA English DT Article ID MOLECULAR ELECTRONIC-STRUCTURE; FULL CCSDT MODEL; DEGENERATE PERTURBATION-THEORY; GAUSSIAN-BASIS SETS; ATOMS; IMPLEMENTATION; INCLUSION; COMPLEXES; DIOXYGEN; HYDROGEN AB Several high-level ab initio methods were employed in studies of the narrow singlet-triplet separation of the cyclic form of nickel dioxide (NiO2). It is shown that the complete versions of the locally renormalized coupled cluster method with singles, doubles, and noniterative triples (LR-CCSD(T)) approach, in contrast to the standard CCSD(T) method, provides results in concert with predictions of the density functional theory (DFT) and internally contracted multi-reference configuration interaction method (IC-MRCI), which favor the triplet state to be the lowest one. Relevant discussion of several aspects related to the underlying CCSD calculations, indicate that the dominant role of singly excited amplitudes violates the paradigm about the leading role of two-body effects in the description of the correlation energy. We also show that the multireference perturbation theory, exemplified here by the Generalized Van Vleck Perturbation Theory, requires the use of very large model space in order to properly describe the non-dynamical correlation effects. (c) 2006 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. Univ Michigan, Dept Chem & Biochem, Flint, MI 48502 USA. Univ N Dakota, Dept Chem, Grand Forks, ND 58202 USA. RP Song, J (reprint author), Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, K1-96,POB 999, Richland, WA 99352 USA. EM jiesong@umich.edu; karol.kowalski@pnl.gov RI Apra, Edoardo/F-2135-2010 OI Apra, Edoardo/0000-0001-5955-0734 NR 40 TC 15 Z9 15 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD SEP 20 PY 2006 VL 428 IS 4-6 BP 277 EP 282 DI 10.1016/j.cplett.2006.07.075 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 087SS UT WOS:000240763200010 ER PT J AU Stanger, KJ Angelici, RJ AF Stanger, Keith J. Angelici, Robert J. TI Silica-catalyzed tert-butyl hydroperoxide oxidation of dibenzothiophene and its 4,6-dimethyl derivative: A route to low-sulfur petroleum feedstocks SO ENERGY & FUELS LA English DT Article ID ULTRA-DEEP DESULFURIZATION; SURFACE-MEDIATED REACTIONS; DIESEL FUEL; SULFOXIDES; SULFIDES; EMULSION; OIL AB Silica catalyzes the tert-butyl hydroperoxide (TBHP, t-BuOOH) oxidation of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-Me2DBT) to their oxides at 50-90 degrees C. Sulfur concentrations in simulated hydrotreated petroleum feedstock solutions containing 374 ppm of sulfur as DBT or 4,6-Me2DBT can be reduced to 1 ppm within 40 min at 90 degrees C. As an inexpensive, stable, and recyclable catalyst, silica has several advantages over other catalysts for the oxidation of DBTs to their easily separated oxides as a means of achieving low sulfur levels in petroleum feedstocks. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Angelici, RJ (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. EM angelici@iastate.edu NR 16 TC 21 Z9 22 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0887-0624 J9 ENERG FUEL JI Energy Fuels PD SEP 20 PY 2006 VL 20 IS 5 BP 1757 EP 1760 DI 10.1021/ef050327r PG 4 WC Energy & Fuels; Engineering, Chemical SC Energy & Fuels; Engineering GA 085PH UT WOS:000240615500002 ER PT J AU Luebke, D Myers, C Pennline, H AF Luebke, David Myers, Christina Pennline, Henry TI Hybrid membranes for selective carbon dioxide separation from fuel gas SO ENERGY & FUELS LA English DT Article ID MODIFIED INORGANIC MEMBRANES; SURFACE FLOW MEMBRANE; PERMEATION; ADSORPTION; ALUMINA; SILICON; GLASS AB The potential of hybrid membranes as a CO(2) capture technology for integrated gasification combined cycle applications was evaluated. Commercial gamma-alumina supports were modified with a variety of trichlorosilanes intended to enhance the surface adsorption of CO(2). The resulting hybrids were characterized using X-ray photoelectric spectroscopy and Fourier transform infrared spectroscopy and tested for performance in the separation of He and CO(2). The silanization temperature was determined to be important because membranes fabricated at 273 K had substantially different performance properties than those fabricated at room temperature. Specifically, the permeances of membranes modified with alkyltrichlorosilanes at reduced temperatures were 1-2 orders of magnitude higher than those of membranes fabricated at room temperature, and the selectivities of these low-temperature silanized membranes were relatively similar to those expected from Knudsen diffusion. Supports modified with silanes containing one of a variety of functionalities were tested for CO(2)/He selectivity. Membranes modified with 2-acetoxyethyl, 2-carbomethoxyethyl, and 3-aminopropyl groups exhibited CO(2) selectivity, with the highest values approaching 7 for 2-carbomethoxyethyl- silated membranes at 50 degrees C. Temperature dependences resulted in selectivity maxima for the 2-acetoxyethyl and 2-carbomethoxyethyl membranes. Mixed-gas selectivities were slightly higher than pure-gas selectivities because of a decrease in He permeance with a relatively minor reduction in CO(2) permeance. Transport in the selective membranes is believed to occur by a combination of activated and solution diffusion for He and a combination of activated and surface diffusion for CO(2). C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Luebke, D (reprint author), US DOE, Natl Energy Technol Lab, MS 84-206,POB 10940, Pittsburgh, PA 15236 USA. EM david.luebke@netl.doe.gov NR 25 TC 27 Z9 29 U1 2 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0887-0624 J9 ENERG FUEL JI Energy Fuels PD SEP 20 PY 2006 VL 20 IS 5 BP 1906 EP 1913 DI 10.1021/ef060060b PG 8 WC Energy & Fuels; Engineering, Chemical SC Energy & Fuels; Engineering GA 085PH UT WOS:000240615500023 ER PT J AU Presto, AA Granite, EJ Karash, A Hargis, RA O'Dowd, WJ Pennline, HW AF Presto, Albert A. Granite, Evan J. Karash, Andrew Hargis, Richard A. O'Dowd, William J. Pennline, Henry W. TI A kinetic approach to the catalytic oxidation of mercury in flue gas SO ENERGY & FUELS LA English DT Article ID FIRED POWER-PLANTS; COAL COMBUSTION; SPECIATION; TRANSFORMATIONS; CHEMISTRY; MECHANISM; CHLORINE; REMOVAL AB Four mercury oxidation catalysts were tested in a packed bed reactor in the presence of flue gas generated by the NETL 500 lb/h coal combustor. The four catalysts tested were Ir, Ir/ HCl, Darco FGD activated carbon, and Thief/ HCl. The Thief/ HCl and Darco converted the highest percentage of the inlet mercury; however, the high conversion in these experiments was aided by larger catalyst loadings than in the Ir and Ir/ HCl experiments. We propose a method for analyzing mercury oxidation catalyst results in a kinetic framework using the bulk reaction rate for oxidized mercury formation normalized by either the catalyst mass or surface area. Results reported for fractional mercury oxidation are strongly influenced by the specific experimental conditions and are therefore difficult to translate from experiment to experiment. The catalyst- normalized results allow for more quantitative analysis of mercury oxidation catalyst data and are the first step in creating a predictive model that will allow for efficient scaling up from laboratory- scale to larger- scale studies. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Granite, EJ (reprint author), US DOE, Natl Energy Technol Lab, 626 Cochrans Mill Rd, Pittsburgh, PA 15236 USA. EM Evan.Granite@netl.doe.gov RI Presto, Albert/C-3193-2008 OI Presto, Albert/0000-0002-9156-1094 NR 32 TC 41 Z9 43 U1 2 U2 24 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0887-0624 J9 ENERG FUEL JI Energy Fuels PD SEP 20 PY 2006 VL 20 IS 5 BP 1941 EP 1945 DI 10.1021/cf060207z PG 5 WC Energy & Fuels; Engineering, Chemical SC Energy & Fuels; Engineering GA 085PH UT WOS:000240615500027 ER PT J AU Yang, C Meza, JC Wang, LW AF Yang, Chao Meza, Juan C. Wang, Lin-Wang TI A constrained optimization algorithm for total energy minimization in electronic structure calculations SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE electronic structure calculation; total energy minimization; nonlinear eigenvalue problems; constrained optimization ID WAVE BASIS-SET; CONVERGENCE ACCELERATION; MOLECULAR-DYNAMICS; QR TRANSFORMATION; ITERATION; FUNCTIONALS AB A new direct constrained optimization algorithm for minimizing the Kohn-Sham (KS) total energy functional is presented in this paper. The key ingredients of this algorithm involve projecting the total energy functional into a sequence of subspaces of small dimensions and seeking the minimizer of total energy functional within each subspace. The minimizer of a subspace energy functional not only provides a search direction along which the KS total energy functional decreases but also gives an optimal "step-length" to move along this search direction. Numerical examples are provided to demonstrate that this new direct constrained optimization algorithm can be more efficient than the self-consistent field (SCF) iteration. (c) 2006 Elsevier Inc. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA. RP Yang, C (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM cyang@lbl.gov RI Meza, Juan/B-5601-2012; OI Meza, Juan/0000-0003-4543-0349 NR 27 TC 20 Z9 22 U1 5 U2 11 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD SEP 20 PY 2006 VL 217 IS 2 BP 709 EP 721 DI 10.1016/j.jcp.2006.01.030 PG 13 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 096ZO UT WOS:000241415800022 ER PT J AU Rabuka, D Hubbard, SC Laughlin, ST Argade, SP Bertozzi, CR AF Rabuka, David Hubbard, Sarah C. Laughlin, Scott T. Argade, Sulabha P. Bertozzi, Carolyn R. TI A chemical reporter strategy to probe glycoprotein fucosylation SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID LIVING ANIMALS; CELL-SURFACES; L-SELECTIN; GLYCOSYLATION; TRANSFERASE; CHEMISTRY; ANTIGEN; LIGANDS; CANCER; FUCOSE C1 Univ Calif Berkeley, Howard Hughes Med Inst, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. RP Bertozzi, CR (reprint author), Univ Calif Berkeley, Howard Hughes Med Inst, Dept Chem, Berkeley, CA 94720 USA. EM crb@berkeley.edu FU NIGMS NIH HHS [GM66047, R01 GM066047, R01 GM066047-06] NR 18 TC 81 Z9 82 U1 2 U2 21 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD SEP 20 PY 2006 VL 128 IS 37 BP 12078 EP 12079 DI 10.1021/ja064619y PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 083NU UT WOS:000240465200023 PM 16967952 ER PT J AU Byl, O Liu, JC Wang, Y Yim, WL Johnson, JK Yates, JT AF Byl, Oleg Liu, Jin-Chen Wang, Yang Yim, Wai-Leung Johnson, J. Karl Yates, John T., Jr. TI Unusual hydrogen bonding in water-filled carbon nanotubes SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID MOLECULAR-DYNAMICS SIMULATION; TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; AB-INITIO; VIBRATIONAL SPECTROSCOPY; ICE-NANOTUBES; SUPERCRITICAL WATER; INFRARED-SPECTRA; ADSORPTION; SURFACE AB We present the first experimental vibrational spectroscopy study providing direct evidence of a water phase inside single-walled carbon nanotubes that exhibits an unusual form of hydrogen-bonding due to confinement. Water adopts a stacked-ring structure inside nanotubes, forming intra- and inter-ring hydrogen bonds. The intra-ring hydrogen bonds are bulk-like while the inter-ring hydrogen bonds are relatively weak, having a distorted geometry that gives rise to a distinct OH stretching mode. The experimentally observed infrared mode at 3507 cm(-1) is assigned to vibrations of the inter-ring OH-groups based on detailed atomic-level modeling. The direct observation of unusual hydrogen bonding in nanotubes has potential implications for water in other highly confined systems, such as biological channels and nanoporous media. C1 Univ Pittsburgh, Ctr Surface Sci, Dept Chem, Pittsburgh, PA 15260 USA. Univ Pittsburgh, Dept Chem Engn, Pittsburgh, PA 15261 USA. Carl von Ossietzky Univ Oldenburg, Oldenburg Inst Reine & Angew Chem, D-26129 Oldenburg, Germany. Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Yates, JT (reprint author), Univ Pittsburgh, Ctr Surface Sci, Dept Chem, Pittsburgh, PA 15260 USA. EM jyates@pitt.edu RI Yim, Wai-Leung/B-6629-2013; Johnson, Karl/E-9733-2013 OI Johnson, Karl/0000-0002-3608-8003 NR 61 TC 183 Z9 186 U1 5 U2 78 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD SEP 20 PY 2006 VL 128 IS 37 BP 12090 EP 12097 DI 10.1021/ja057856u PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA 083NU UT WOS:000240465200029 PM 16967958 ER PT J AU Gritsyna, VT Afanasyev-Charkin, IV Kazarinov, YG Sickafus, KE AF Gritsyna, V. T. Afanasyev-Charkin, I. V. Kazarinov, Yu G. Sickafus, K. E. TI Optical properties of magnesium aluminate spinel crystals implanted with helium ions SO VACUUM LA English DT Article; Proceedings Paper CT 17th International Conference on Ion Surgace Interactions CY AUG 25-29, 2005 CL Zvenigorod, RUSSIA SP Russian Federat, Minist Higher Educ & Sci, RAS, Fed Atomic Energy Agcy, Moscow Aviat Inst, Moscow State Univ, Moscow Engn Phys Inst, St Petersburg State Tech Univ DE He ion irradiation; optical properties; radiation damage; magnesium aluminate spinel ID SINGLE-CRYSTALS; IRRADIATION; MGAL2O4 AB Measurements of the optical properties of helium-implanted spinel crystals have been used to obtain information on the formation of point defects and their evolution during thermal annealing. Optical absorption spectra showed that the main defects in helium-implanted spinel were the anion vacancies which were removed by annealing to 1000 K. Additional defects in implanted and annealed specimens were observed and are related to cation vacancies and anti-site defects. The increased cationic disorder in ion-implanted spinel crystals was demonstrated by measuring the radio-luminescence in these crystals. Optical micrographs show that, at low fluences, the heterogeneous nucleation of bubbles take place, but at a fluence of 1 x 10(21) ion/m(2) the homogeneous formation of small bubbles of higher density was obtained. Finally, at the highest fluence of 3 x 10(21) ion/m(2) the bubbles begin to grow by coalescence and become large enough to cause flaking of the implanted surface. (c) 2006 Elsevier Ltd. All rights reserved. C1 VN Karazin Kharkiv Natl Univ, UA-61077 Kharkov, Ukraine. Intel Corp, Santa Clara, CA 95052 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Gritsyna, VT (reprint author), VN Karazin Kharkiv Natl Univ, Svoboda Sq 4, UA-61077 Kharkov, Ukraine. EM gritsyna@htuni.kharkov.ua RI Kazarinov, Yuri/J-5876-2016 OI Kazarinov, Yuri/0000-0001-5143-8545 NR 14 TC 4 Z9 4 U1 2 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0042-207X J9 VACUUM JI Vacuum PD SEP 20 PY 2006 VL 81 IS 2 SI SI BP 174 EP 178 DI 10.1016/j.vacuum.2006.03.015 PG 5 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 088DC UT WOS:000240790700007 ER PT J AU Eisenberg, D Nelson, R Sawaya, MR Balbirnie, M Sambashivan, S Ivanova, MI Madsen, AO Riekel, C AF Eisenberg, David Nelson, Rebecca Sawaya, Michael R. Balbirnie, Melinda Sambashivan, Shilpa Ivanova, Magdalena I. Madsen, Anders O. Riekel, Christian TI The structural biology of protein aggregation diseases: Fundamental questions and some answers SO ACCOUNTS OF CHEMICAL RESEARCH LA English DT Review ID AMYLOID FIBRIL FORMATION; SUPERPLEATED BETA-STRUCTURE; URE2P PRION FILAMENTS; X-RAY-DIFFRACTION; SOLID-STATE NMR; HET-S PRION; YEAST PRION; CORE STRUCTURE; SACCHAROMYCES-CEREVISIAE; RIBONUCLEASE-A AB Amyloid fibrils are found in association with at least two dozen fatal diseases. The tendency of numerous proteins to convert into amyloid-like fibrils poses fundamental questions for structural biology and for protein science in general. Among these are the following: What is the structure of the cross-beta spine, common to amyloid-like fibrils? Is there a sequence signature for proteins that form amyloid-like fibrils? What is the nature of the structural conversion from native to amyloid states, and do fibril-forming proteins have two distinct stable states, the native state and the amyloid state? What is the basis of protein complementarity, in which a protein chain can bind to itself? We offer tentative answers here, based on our own recent structural studies. C1 Univ Calif Los Angeles, DOE Inst Genom & Proteom, Howard Hughes Med Inst, Los Angeles, CA 90095 USA. Univ Copenhagen, KBH, Dept Chem, Ctr Crystallog Studies, DK-2100 Copenhagen, Denmark. European Synchrotron Radiat Facil, F-38043 Grenoble, France. RP Eisenberg, D (reprint author), Univ Calif Los Angeles, DOE Inst Genom & Proteom, Howard Hughes Med Inst, Los Angeles, CA 90095 USA. EM david@mbi.ucla.edu RI Madsen, Anders/B-4760-2015; OI Madsen, Anders/0000-0001-5422-8076; Sawaya, Michael/0000-0003-0874-9043 FU NIA NIH HHS [R01 AG029430, R01 AG029430-04] NR 65 TC 121 Z9 122 U1 1 U2 22 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0001-4842 J9 ACCOUNTS CHEM RES JI Accounts Chem. Res. PD SEP 19 PY 2006 VL 39 IS 9 BP 568 EP 575 DI 10.1021/ar0500618 PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA 084ZK UT WOS:000240572700002 PM 16981672 ER PT J AU Shinde, R Perkins, J Contag, CH AF Shinde, Rajesh Perkins, Julie Contag, Christopher H. TI Luciferin derivatives for enhanced in vitro and in vivo bioluminescence assays SO BIOCHEMISTRY LA English DT Article ID FIREFLY LUCIFERASE; MAMMALIAN-CELLS; GENE-EXPRESSION; MODEL; ACTIVATION; APOPTOSIS; SUBSTRATE; EMISSION; REPORTER AB In vivo bioluminescence imaging has become a cornerstone technology for preclinical molecular imaging. This imaging method is based on light-emitting enzymes, luciferases, which require specific substrates for light production. When linked to a specific biological process in an animal model of human biology or disease, the enzyme-substrate interactions become biological indicators that can be studied noninvasively in living animals. Signal intensity in these animal models depends on the availability of the substrate for the reaction within living cells in intact organs. The biodistribution and clearance rates of the substrates are therefore directly related to optimal imaging times and signal intensities and ultimately determine the sensitivity of detection and predictability of the model. Modifications of D-luciferin, the substrate for the luciferases obtained from beetle, including fireflies, result in novel properties and offer opportunities for improved bioassays. For this purpose, we have synthesized a conjugate, glycine-D-aminoluciferin, and investigated its properties relative to those of D-aminoluciferin and D-luciferin. The three substrates exhibited different kinetic properties and different intracellular accumulation profiles due to differences in their molecular structure, which in turn influenced their biodistribution in animals. Glycine-D-aminoluciferin had a longer in vivo circulation time than the other two substrates. The ability to assay luciferase in vitro and in vivo using these substrates, which exhibit different pharmacokinetic and pharmacodynamic properties, will provide flexibility and improve current imaging capabilities. C1 Stanford Univ, Dept Pediat Radiol & Microbiol & Immunol, Clark Ctr, Stanford, CA 94305 USA. Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94551 USA. Univ Calif Davis, NSF, Ctr Biophoton Sci & Technol, Sacramento, CA 95817 USA. RP Contag, CH (reprint author), Stanford Univ, Dept Pediat Radiol & Microbiol & Immunol, Clark Ctr, 318 Campus Dr, Stanford, CA 94305 USA. EM ccontag@stanford.edu FU NICHD NIH HHS [R24 HD37543] NR 30 TC 58 Z9 58 U1 1 U2 33 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD SEP 19 PY 2006 VL 45 IS 37 BP 11103 EP 11112 DI 10.1021/bi060475o PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 083DT UT WOS:000240436800007 PM 16964971 ER PT J AU Zuo, CD Dorris, SE Balachandran, U Liu, ML AF Zuo, Chendong Dorris, S. E. Balachandran, U. Liu, Meilin TI Effect of Zr-doping on the chemical stability and hydrogen permeation of the Ni-BaCe0.8Y0.2O3-alpha mixed protonic-electronic conductor SO CHEMISTRY OF MATERIALS LA English DT Article ID TRANSPORT-PROPERTIES; SOLID-SOLUTIONS; OXIDES; BACEO3 AB Successful development of hydrogen separation membranes based on mixed ionic and electronic conductors may improve the economics of hydrogen production. While high proton conductivity has been reported for many perovskite-type oxides in a humid atmosphere, materials with both high proton conductivity and good chemical stability under conditions for practical hydrogen separation are yet to be developed. In this paper, we report the effect of Zr-doping in BZCYs [Ba( Zr0.8-chi Ce chi Y0.2)O3-alpha] (0.4 <= chi <= 0.8) on the proton conductivity and chemical stability. A novel Ni-BZCY7 [Ni-Ba(Zr0.1Ce0.7Y0.2)-O3-alpha cermet (metal-ceramic composite) membrane appears to have not only high proton conductivity but also adequate stability in a CO2- and H2O-containing atmosphere. C1 Georgia Inst Technol, Sch Mat Sci & Engn, Ctr Innovat Fuel Cell & Battery Technol, Atlanta, GA 30332 USA. Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. RP Liu, ML (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, Ctr Innovat Fuel Cell & Battery Technol, Atlanta, GA 30332 USA. EM meilin.liu@mse.gatech.edu RI Zuo, Chendong/A-3976-2011; zuo, chendong/A-7006-2011; Liu, Meilin/E-5782-2010 OI Liu, Meilin/0000-0002-6188-2372 NR 17 TC 81 Z9 84 U1 0 U2 42 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD SEP 19 PY 2006 VL 18 IS 19 BP 4647 EP 4650 DI 10.1021/cm05148224 PG 4 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 083DW UT WOS:000240437100016 ER PT J AU Lo, CT Lee, B Winans, RE Thiyagarajan, P AF Lo, Chieh-Tsung Lee, Byeongdu Winans, Randall E. Thiyagarajan, P. TI Effect of dispersion of inorganic nanoparticles on the phase behavior of block copolymers in a selective solvent SO MACROMOLECULES LA English DT Article ID DIBLOCK COPOLYMERS; COMPUTER-SIMULATION; VARYING SELECTIVITY; MIXTURES; COMPOSITES; PALLADIUM C1 Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA. Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Thiyagarajan, P (reprint author), Argonne Natl Lab, Intense Pulsed Neutron Source, 9700 S Cass Ave, Argonne, IL 60439 USA. EM thiyaga@anl.gov OI Lee, Byeongdu/0000-0003-2514-8805 NR 27 TC 14 Z9 15 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD SEP 19 PY 2006 VL 39 IS 19 BP 6318 EP 6320 DI 10.1021/ma060879o PG 3 WC Polymer Science SC Polymer Science GA 083DX UT WOS:000240437200002 ER PT J AU Santer, BD Wigley, TML Gleckler, PJ Bonfils, C Wehner, MF AchutaRao, K Barnett, TP Boyle, JS Bruggemann, W Fiorino, M Gillett, N Hansen, JE Jones, PD Klein, SA Meehl, GA Raper, SCB Reynolds, RW Taylor, KE Washington, WM AF Santer, B. D. Wigley, T. M. L. Gleckler, P. J. Bonfils, C. Wehner, M. F. AchutaRao, K. Barnett, T. P. Boyle, J. S. Brueggemann, W. Fiorino, M. Gillett, N. Hansen, J. E. Jones, P. D. Klein, S. A. Meehl, G. A. Raper, S. C. B. Reynolds, R. W. Taylor, K. E. Washington, W. M. TI Forced and unforced ocean temperature changes in Atlantic and Pacific tropical cyclogenesis regions SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID HURRICANE INTENSITY; CLIMATE MODEL; WORLDS OCEANS; TRENDS; UNCERTAINTIES; VARIABILITY; ATMOSPHERE; SIGNATURE; CYCLONES; INCREASE AB research has identified links between changes in sea surface temperature (SST) and hurricane intensity. We use climate models to study the possible causes of SST changes in Atlantic and Pacific tropical cyclogenesis regions. The observed SST increases in these regions range from 0.32 degrees C to 0.67 degrees C over the 20th century. The 22 climate models examined here suggest that century-timescale SST changes of this magnitude cannot be explained solely by unforced variability of the climate system. We employ model simulations of natural internal variability to make probabilistic estimates of the contribution of external forcing to observed SST changes. For the period 1906-2005, we find an 84% chance that external forcing explains at least 67% of observed SST increases in the two tropical cyclogenesis regions. Model "20th-century" simulations, with external forcing by combined anthropogenic and natural factors, are generally capable of replicating observed SST increases. In experiments in which forcing factors are varied individually rather than jointly, human-caused changes in greenhouse gases are the main driver of the 20th-century SST increases in both tropical cyclogenesis regions. C1 Lawrence Livermore Natl Lab, Program Climate Model Diagnosis & Intercomparis, Livermore, CA 94550 USA. Natl Ctr Atmospher Res, Boulder, CO 80307 USA. Univ Calif Merced, Merced, CA 95344 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Scripps Inst Oceanog, La Jolla, CA 92037 USA. Univ Hamburg, Inst Unternehmensforsch, D-22765 Hamburg, Germany. Univ E Anglia, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England. NASA, Goddard Inst Space Studies, New York, NY 10025 USA. Manchester Metropolitan Univ, Ctr Air Transport & Environm, Manchester M1 5GD, Lancs, England. Natl Ocean & Atmospher Adm, Natl Climate Data Ctr, Asheville, NC 28801 USA. RP Santer, BD (reprint author), Lawrence Livermore Natl Lab, Program Climate Model Diagnosis & Intercomparis, Livermore, CA 94550 USA. EM santer1@llnl.gov RI Jones, Philip/C-8718-2009; Taylor, Karl/F-7290-2011; Santer, Benjamin/F-9781-2011; Gleckler, Peter/H-4762-2012; Bonfils, Celine/H-2356-2012; Fiorino, Michael/N-4150-2014; Klein, Stephen/H-4337-2016 OI Jones, Philip/0000-0001-5032-5493; Taylor, Karl/0000-0002-6491-2135; Gleckler, Peter/0000-0003-2816-6224; Bonfils, Celine/0000-0002-4674-5708; Fiorino, Michael/0000-0002-2819-8157; Klein, Stephen/0000-0002-5476-858X NR 31 TC 92 Z9 94 U1 1 U2 18 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD SEP 19 PY 2006 VL 103 IS 38 BP 13905 EP 13910 DI 10.1073/pnas.0602861103 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 087MN UT WOS:000240746600003 PM 16968781 ER PT J AU Choi, IG Kim, SH AF Choi, In-Geol Kim, Sung-Hou TI Evolution of protein structural classes and protein sequence families SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE protein fold classes; common structural ancestor; evolutionary age; protein structure universe ID DATABASE; FOLD; CLASSIFICATION; UNIVERSE; SPACE; MODEL; BETA; OLD AB In protein structure space, protein structures cluster into four elongated regions when mapped based solely on similarity among the 3D structures. These four regions correspond to the four major classes of present-day proteins defined by the contents of secondary structure types and their topological arrangement. Evolution of and restriction to these four classes suggest that, in most cases, the evolution of genes may have been constrained or selected to those genetic changes that results in structurally stable proteins occupying one of the four "allowed" regions of the protein structure space, "structural selection," an important component of natural selection in gene evolution. Our studies on tracing the "common structural ancestor" for each protein sequence family of known structure suggest that: (i) recently emerged proteins belong mostly to three classes; (ii) the proteins that emerged earlier evolved to gain a new class; and (iii) the proteins that emerged earliest evolved to become the present-day proteins in the four major classes, with the fourth-class proteins becoming the most dominant population. Furthermore, our studies also show that not all present-day proteins evolved from one single set of proteins in the last common ancestral organism, but new common ancestral proteins were "born" at different evolutionary times, not traceable to one or two ancestral proteins: "the multiple birth model" for the evolution of protein sequence families. C1 Univ Calif Berkeley, Phys Biosci Div, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Kim, SH (reprint author), Univ Calif Berkeley, Phys Biosci Div, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM shkim@lbl.gov RI Choi, In-Geol/F-3152-2013 FU NIGMS NIH HHS [GM62412, P50 GM062412] NR 26 TC 39 Z9 39 U1 0 U2 7 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD SEP 19 PY 2006 VL 103 IS 38 BP 14056 EP 14061 DI 10.1073/pnas.0606239103 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 087MN UT WOS:000240746600029 PM 16959887 ER PT J AU Liu, GS Zhang, DX Lu, ZM AF Liu, Gaisheng Zhang, Dongxiao Lu, Zhiming TI Stochastic uncertainty analysis for unconfined flow systems SO WATER RESOURCES RESEARCH LA English DT Article ID HETEROGENEOUS POROUS-MEDIA; MONTE-CARLO SIMULATIONS; GROUNDWATER-FLOW; CONDITIONAL PROBABILITIES; UNSATURATED FLOW; TRANSPORT; NONSTATIONARY; MOMENTS AB [1] A new stochastic approach proposed by Zhang and Lu ( 2004), called the Karhunen-Loeve decomposition-based moment equation (KLME), has been extended to solving nonlinear, unconfined flow problems in randomly heterogeneous aquifers. This approach is on the basis of an innovative combination of Karhunen-Loeve decomposition, polynomial expansion, and perturbation methods. The random log-transformed hydraulic conductivity field (lnK(S)) is first expanded into a series in terms of orthogonal Gaussian standard random variables with their coefficients obtained as the eigenvalues and eigenfunctions of the covariance function of lnK(S). Next, head h is decomposed as a perturbation expansion series Sigma h((m)), where h((m)) represents the mth-order head term with respect to the standard deviation of lnK(S). Then h((m)) is further expanded into a polynomial series of m products of orthogonal Gaussian standard random variables whose coefficients h(i1),((m))(i2),...,i(m) are deterministic and solved sequentially from low to high expansion orders using MODFLOW- 2000. Finally, the statistics of head and flux are computed using simple algebraic operations on h(i1),((m))(i2),...,i(m) . A series of numerical test results in 2-D and 3-D unconfined flow systems indicated that the KLME approach is effective in estimating the mean and (co) variance of both heads and fluxes and requires much less computational effort as compared to the traditional Monte Carlo simulation technique. C1 Univ Oklahoma, Mewbourne Sch Petr & Geol Engn, Norman, OK 73019 USA. Peking Univ, Coll Engn, Dept Energy & Resources Engn, Beijing 100871, Peoples R China. Los Alamos Natl Lab, Hydrol & Geochem Grp, Los Alamos, NM 87545 USA. RP Liu, GS (reprint author), Univ Kansas, Kansas Geol Survey, 1930 Constant Ave, Lawrence, KS 66047 USA. EM gliu@kgs.ku.edu RI Zhang, Dongxiao/D-5289-2009; Liu, Gaisheng/K-3495-2015; OI Zhang, Dongxiao/0000-0001-6930-5994; Liu, Gaisheng/0000-0002-7900-0622; Lu, Zhiming/0000-0001-5800-3368 NR 29 TC 6 Z9 6 U1 2 U2 7 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD SEP 19 PY 2006 VL 42 IS 9 AR W09412 DI 10.1029/2005WR004766 PG 18 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 088SE UT WOS:000240830600004 ER PT J AU Yan, AH Lau, BW Weissman, BS Kulaots, I Yang, NYC Kane, AB Hurt, RH AF Yan, Aihui Lau, Bonnie W. Weissman, Bevan S. Kulaots, Indrek Yang, Nancy Y. C. Kane, Agnes B. Hurt, Robert H. TI Biocompatible, hydrophilic, supramolecular carbon nanoparticles for cell delivery SO ADVANCED MATERIALS LA English DT Article ID NANOTUBES; NANOFIBERS; GRAPHITE AB Liquid-crystal self-assembly is used to fabricate carbon nanoparticles specially suited for cell-delivery applications (see figure). The nanoparticles possess high-activity surfaces for easy functionalization and aqueous dispersion, and are shown to be rapidly internalized by mesothelial cells, wherein they show no measurable toxicity relative to crystalline silica used as a positive control. C1 Brown Univ, Div Engn, Providence, RI 02912 USA. Brown Univ, Dept Chem, Providence, RI 02912 USA. Brown Univ, Dept Pathol & Lab Med, Providence, RI 02912 USA. Sandia Natl Labs, Livermore, CA 94551 USA. RP Hurt, RH (reprint author), Brown Univ, Div Engn, Providence, RI 02912 USA. EM Robert_Hurt@brown.edu NR 42 TC 51 Z9 52 U1 0 U2 22 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0935-9648 J9 ADV MATER JI Adv. Mater. PD SEP 18 PY 2006 VL 18 IS 18 BP 2373 EP + DI 10.1002/adma.200600838 PG 7 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 091TI UT WOS:000241050800005 ER PT J AU Wang, YD Ren, Y Li, HQ Choo, H Benson, ML Brown, DW Liaw, PK Zuo, L Wang, G Brown, DE Alp, EE AF Wang, Yan-Dong Ren, Yang Li, Hongqi Choo, Hahn Benson, Michael L. Brown, Donald W. Liaw, Peter K. Zuo, Liang Wang, Gang Brown, Dennis E. Alp, Esen E. TI Tracing memory in polycrystalline ferromagnetic shape-memory alloys SO ADVANCED MATERIALS LA English DT Article ID NI-MN-GA; FIELD-INDUCED STRAIN; MAGNETIC-FIELD; IN-SITU; NEUTRON-DIFFRACTION; PHASE-TRANSFORMATION; CRYSTAL-STRUCTURES; TEMPERATURE; DEFORMATION; NI2MNGA AB In situ high-energy X-ray diffraction experiments reveal the influence of various microstresses and grain orientations on the memory effect in polycrystalline Ni2MnGa ferromagnetic shape-memory alloys during phase transformation (see figure). The memory of grain orientation and intergranular stress is evident; however, the microscale memory is degraded due to the existence of the intragranular stress. C1 Northeastern Univ, Key Lab Anisotropy Design & Texture Engn Mat, Minist Educ, Shenyang 110004, Peoples R China. Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. Argonne Natl Lab, Div Xray Sci, Argonne, IL 60439 USA. Los Alamos Natl Lab, Los Alamos Neutron Scattering Ctr, Los Alamos, NM 87545 USA. No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. RP Wang, YD (reprint author), Northeastern Univ, Key Lab Anisotropy Design & Texture Engn Mat, Minist Educ, Shenyang 110004, Peoples R China. EM ydwang@mail.neu.edu.cn; lzuo@mail.neu.edu.cn RI Li, Hongqi/B-6993-2008; wang, yandong/G-9404-2013; Choo, Hahn/A-5494-2009 OI Choo, Hahn/0000-0002-8006-8907 NR 24 TC 26 Z9 26 U1 3 U2 29 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0935-9648 J9 ADV MATER JI Adv. Mater. PD SEP 18 PY 2006 VL 18 IS 18 BP 2392 EP + DI 10.1002/adma.200600480 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 091TI UT WOS:000241050800009 ER PT J AU Araki, T Ade, H Stubbs, JM Sundberg, DC Mitchell, GE Kortright, JB Kilcoyne, ALD AF Araki, Tohru Ade, Harald Stubbs, Jeffrey M. Sundberg, Donald C. Mitchell, Gary E. Kortright, Jeffrey B. Kilcoyne, A. L. D. TI Resonant soft x-ray scattering from structured polymer nanoparticles SO APPLIED PHYSICS LETTERS LA English DT Article ID LATEX PARTICLE MORPHOLOGY; TRANSMISSION; MICROSCOPY; REFLECTION; SPECTRA AB The application of resonant soft x-ray scattering to chemically heterogeneous soft condensed matter materials is presented. Two structured styrene-acrylic polymer composite latex particles similar to 230 nm in diameter were utilized to delineate the potential utility of this technique. Angular scans at photon energies corresponding to strong scattering contrast between specific chemical moieties made it possible to infer the effective radii that correspond to the two polymer phases in the nanoparticles. The results show that resonant soft x-ray scattering should be a powerful complementary tool to neutron and hard x-ray scattering for the characterization of structured soft condensed matter nanomaterials. (c) 2006 American Institute of Physics. C1 N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA. Univ New Hampshire, Nanostruct Polymers Res Ctr, Durham, NH 03824 USA. Dow Chem Co USA, Midland, MI 48667 USA. Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Ade, H (reprint author), N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA. EM harald_ade@ncsu.edu RI MSD, Nanomag/F-6438-2012; Ade, Harald/E-7471-2011; Kilcoyne, David/I-1465-2013 NR 25 TC 49 Z9 49 U1 2 U2 25 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 18 PY 2006 VL 89 IS 12 AR 124106 DI 10.1063/1.2356306 PG 3 WC Physics, Applied SC Physics GA 086NM UT WOS:000240680300146 ER PT J AU Caro, A Caro, M Lopasso, EM Crowson, DA AF Caro, A. Caro, M. Lopasso, E. M. Crowson, D. A. TI Implications of ab initio energetics on the thermodynamics of Fe-Cr alloys SO APPLIED PHYSICS LETTERS LA English DT Article ID CU ALLOYS; IRRADIATION; IRON AB The authors analyze the implications of the recently reported results of ab initio calculations of formation energies of the Fe-Cr alloy. The formation energies show a change in sign from negative to positive as Cr composition increases above similar to 10%. By developing a classic potential to evaluate the thermodynamic properties, they determine the location of the solubility limit and compare it with earlier results. A significant difference appears in a region of temperature and composition that is relevant for the nuclear applications of this alloy. Experimental results seem to confirm the validity of the location of the new solvus line. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. Inst Balseiro, Ctr Atm Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. RP Caro, A (reprint author), Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. EM caro2@llnl.gov NR 20 TC 21 Z9 21 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 18 PY 2006 VL 89 IS 12 AR 121902 DI 10.1063/1.2354445 PG 3 WC Physics, Applied SC Physics GA 086NM UT WOS:000240680300031 ER PT J AU Egatz-Gomez, A Melle, S Garcia, AA Lindsay, SA Marquez, M Dominguez-Garcia, P Rubio, MA Picraux, ST Taraci, JL Clement, T Yang, D Hayes, MA Gust, D AF Egatz-Gomez, Ana Melle, Sonia Garcia, Antonio A. Lindsay, S. A. Marquez, M. Dominguez-Garcia, P. Rubio, Miguel A. Picraux, S. T. Taraci, J. L. Clement, T. Yang, D. Hayes, Mark A. Gust, Devens TI Discrete magnetic microfluidics (vol 89, art no 034106, 2006) SO APPLIED PHYSICS LETTERS LA English DT Correction C1 Arizona State Univ, Harrington Dept Bioengn, Tempe, AZ 85287 USA. Univ Nacl Educ Distancia, Dept Fis Fundamental, Madrid 28040, Spain. Arizona State Univ, Dept Chem & Mat Engn, Tempe, AZ 85287 USA. Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA. Univ Complutense Madrid, Dept Opt, Madrid 28037, Spain. Philip Morris Inc, Res Ctr, Richmond, VA 23234 USA. Los Alamos Natl Lab, MST, CINT, Los Alamos, NM 87545 USA. RP Egatz-Gomez, A (reprint author), Arizona State Univ, Harrington Dept Bioengn, Tempe, AZ 85287 USA. EM smelle@fis.ucm.es RI rubio, miguel/A-4093-2008; Egatz-Gomez, Ana/B-7213-2011; Dominguez-Garcia, Pablo/B-2443-2009 OI rubio, miguel/0000-0002-4210-0443; Dominguez-Garcia, Pablo/0000-0002-1703-8967 NR 1 TC 5 Z9 5 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 18 PY 2006 VL 89 IS 12 AR 129902 DI 10.1063/1.2356466 PG 1 WC Physics, Applied SC Physics GA 086NM UT WOS:000240680300149 ER PT J AU Klimov, VI AF Klimov, Victor I. TI Detailed-balance power conversion limits of nanocrystal-quantum-dot solar cells in the presence of carrier multiplication SO APPLIED PHYSICS LETTERS LA English DT Article ID ELECTRONIC-STRUCTURE; EFFICIENCY; PBSE; UNITY AB Semiconductor nanocrystals can respond to absorption of a single photon by producing multiple electron-hole pairs with extremely high efficiencies. This letter analyzes the impact of this carrier-multiplication (CM) phenomenon on power conversion limits of solar cells using detailed-balance considerations that take into account practical values of CM efficiencies measured in experimental studies. For PbSe nanocrystals that exhibit a ca. 3E(g) CM threshold (E-g is the energy gap), the calculated maximum detailed-balance efficiency is 36% in the presence of CM versus 31% in the no-CM case. An increase to 42% is possible if the CM threshold is at its theoretical minimum of 2E(g). (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. RP Klimov, VI (reprint author), Los Alamos Natl Lab, Div Chem, C PCS, Los Alamos, NM 87545 USA. EM klimov@lanl.gov OI Klimov, Victor/0000-0003-1158-3179 NR 13 TC 105 Z9 106 U1 1 U2 16 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 18 PY 2006 VL 89 IS 12 AR 123118 DI 10.1063/1.2356314 PG 3 WC Physics, Applied SC Physics GA 086NM UT WOS:000240680300117 ER PT J AU Lee, YS Djukic, D Roth, RM Laibowitz, R Izuhara, T Osgood, RM Bakhru, S Bakhru, H Si, WD Welch, D AF Lee, Yoo Seung Djukic, Djordje Roth, Ryan M. Laibowitz, Robert Izuhara, Tomoyuki Osgood, Richard M., Jr. Bakhru, Sasha Bakhru, Hassaram Si, Weidong Welch, David TI Fabrication of patterned single-crystal SrTiO3 thin films by ion slicing and anodic bonding SO APPLIED PHYSICS LETTERS LA English DT Article ID POTASSIUM TANTALATE FILMS; SILICON; GLASS AB A new technique for directly fabricating patterned thin films (< 1 mu m thick) of fully single-crystal strontium titanate uses deep H+ implantation into the oxide sample, followed by anodic bonding of the sample to a Pyrex or Pyrex-on-Si substrate. The dielectric properties and crystal structure of such thin films are characterized and are found to be essentially those of the bulk single crystal. (c) 2006 American Institute of Physics. C1 Columbia Univ, Dept Elect Engn, New York, NY 10027 USA. SUNY Albany, Coll Nanoscale Sci & Engn, Albany, NY 12203 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. RP Lee, YS (reprint author), Columbia Univ, Dept Elect Engn, New York, NY 10027 USA. EM rothr@cumsl.msl.columbia.edu NR 22 TC 4 Z9 4 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 18 PY 2006 VL 89 IS 12 AR 122902 DI 10.1063/1.2355457 PG 3 WC Physics, Applied SC Physics GA 086NM UT WOS:000240680300087 ER PT J AU Stradins, P Young, DL Yan, Y Iwaniczko, E Xu, Y Reedy, RC Branz, HM Wang, Q AF Stradins, P. Young, D. L. Yan, Y. Iwaniczko, E. Xu, Y. Reedy, R. C. Branz, H. M. Wang, Qi TI Real-time optical spectroscopy study of solid-phase crystallization in hydrogenated amorphous silicon SO APPLIED PHYSICS LETTERS LA English DT Article ID A-SI-H; FILMS; GLASS AB Real-time, in situ, optical reflectance spectroscopy is applied to investigate the kinetics of both random and epitaxial solid-phase crystallization of hydrogenated amorphous silicon annealed between 480 and 620 degrees C, with confirmation of key results by electron microscopy. Changes in the visible and near infrared interference fringes monitor H effusion and bulk phase changes, while the ultraviolet reflection peaks monitor the phase at the film surface. Most H effuses with an activation energy of 1.6 eV before crystal nucleation, and crystallite growth occurs with an activation energy of 3.4 eV. The authors determine the time-temperature-thickness diagram for random crystallization and solid-phase epitaxy. (c) 2006 American Institute of Physics. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Stradins, P (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM pauls_stradins@nrel.gov NR 14 TC 17 Z9 17 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 18 PY 2006 VL 89 IS 12 AR 121921 DI 10.1063/1.2357029 PG 3 WC Physics, Applied SC Physics GA 086NM UT WOS:000240680300050 ER PT J AU Tsui, S Wang, YQ Xue, YY Chu, CW AF Tsui, S. Wang, Y. Q. Xue, Y. Y. Chu, C. W. TI Mechanism and scalability in resistive switching of metal-Pr0.7Ca0.3MnO3 interface SO APPLIED PHYSICS LETTERS LA English DT Article AB The polarity-dependent resistive switching across metal-Pr0.7Ca0.3MnO3 interfaces is investigated. The data suggest that shallow defects in the interface dominate the switching. Their density and fluctuation, therefore, will ultimately limit the device size. While the defects generated/annihilated by the pulses and the associated carrier depletion seem to play the major role at lower defect density, the defect correlations and their associated hopping ranges appear to dominate at higher defect density. Therefore, the switching characteristics, especially the size scalability, may be altered through interface treatments. (c) 2006 American Institute of Physics. C1 Univ Houston, Dept Phys, Houston, TX 77204 USA. Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Hong Kong Univ Sci & Technol, Kowloon, Hong Kong, Peoples R China. RP Tsui, S (reprint author), Univ Houston, Dept Phys, 617 Sci & Res 1 Bldg, Houston, TX 77204 USA. EM cwchu@uh.edu NR 18 TC 27 Z9 27 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 18 PY 2006 VL 89 IS 12 AR 123502 DI 10.1063/1.2349312 PG 3 WC Physics, Applied SC Physics GA 086NM UT WOS:000240680300129 ER PT J AU Zhao, YH Zhu, YT Liao, XZ Horita, Z Langdon, TG AF Zhao, Y. H. Zhu, Y. T. Liao, X. Z. Horita, Z. Langdon, T. G. TI Tailoring stacking fault energy for high ductility and high strength in ultrafine grained Cu and its alloy SO APPLIED PHYSICS LETTERS LA English DT Article ID SEVERE PLASTIC-DEFORMATION; ULTRAHIGH-STRENGTH; NANOSTRUCTURED METALS; TENSILE DUCTILITY; CUBIC METALS; NANOCRYSTALLINE; COPPER; AL; ELONGATION; MECHANISM AB Bulk ultrafine grained (UFG) materials produced by severe plastic deformation often have low ductility. Here the authors report that simultaneous increases in ductility and strength can be achieved by tailoring the stacking fault energy (SFE) via alloying. Specifically, UFG bronze (Cu 10 wt. % Zn) with a SFE of 35 mJ/m(2) was found to have much higher strength and ductility than UFG copper with a SFE of 78 mJ/m(2). Accumulations of both twins and dislocations during tensile testing play a significant role in enhancing the ductility of the UFG bronze. This work demonstrates a strategy for designing UFG alloys with superior mechanical properties. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. Univ Chicago, James Franck Inst, Chicago, IL 60637 USA. Kyushu Univ, Fac Engn, Dept Mat Sci & Engn, Fukuoka 8190395, Japan. Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA. Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA. RP Zhu, YT (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, POB 1663, Los Alamos, NM 87545 USA. EM yzhu@lanl.gov RI Langdon, Terence/B-1487-2008; Zhu, Yuntian/B-3021-2008; Zhao, Yonghao/A-8521-2009; Liao, Xiaozhou/B-3168-2009; Lujan Center, LANL/G-4896-2012; U-ID, Kyushu/C-5291-2016 OI Zhu, Yuntian/0000-0002-5961-7422; Liao, Xiaozhou/0000-0001-8565-1758; NR 30 TC 180 Z9 186 U1 17 U2 79 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 18 PY 2006 VL 89 IS 12 AR 121906 DI 10.1063/1.2356310 PG 3 WC Physics, Applied SC Physics GA 086NM UT WOS:000240680300035 ER PT J AU Lau, EY Felton, JS Lightstone, FC AF Lau, Edmond Y. Felton, James S. Lightstone, Felice C. TI Insights into the O-acetylation reaction of hydroxylated heterocyclic amines by human arylamine N-acetyltransferases: A computational study SO CHEMICAL RESEARCH IN TOXICOLOGY LA English DT Article ID SITE-DIRECTED MUTAGENESIS; RECOMBINANT HUMAN NAT1; ANTI-TUBERCULAR DRUG; SALMONELLA-TYPHIMURIUM; METABOLIC-ACTIVATION; CATALYTIC MECHANISM; HUMAN N-ACETYLTRANSFERASE-2; FUNCTIONAL-CHARACTERIZATION; NUCLEOTIDE POLYMORPHISMS; MYCOBACTERIUM-SMEGMATIS AB A computational study was performed to better understand the differences between human arylamine N-acetyltransferase (NAT) 1 and 2. Homology models were constructed from available crystal structures, and comparisons of the active site residues 125, 127, and 129 for these two enzymes provide insight into observed substrate differences. The NAT2 model provided a basis for understanding how some of the common polymorphisms may affect the structure of this protein. Molecular dynamics simulations of the human NAT models and the template structure (NAT from Mycobacterium smegmatis) were performed and showed the models to be stable and reasonable. Docking studies of hydroxylated heterocyclic amines in the models of NAT1 and NAT2 probed the differences exhibited by these two proteins with mutagenic agents. The hydroxylated heterocyclic amines were only able to fit into the NAT2 active site, and an alternative binding site by the phosphate-binding loop was found using our models and will be discussed. Quantum mechanical calculations on the O-acetylation reaction of the hydroxylated heterocyclic amines N-OH MeIQx and N-OH PhIP show that the reaction coordinates differ for these two compounds, but the activation barrier separating the reactant from the product are both low. The results of this study suggest that common polymorphisms in human NAT2 are distant from the active site and are more likely to destabilize the enzyme than affect catalysis. Additionally, the quantum mechanical calculations show that the observed differences in mutagenic activity between N-OH MeIQx and N-OH PhIP are not related to their acetylation reaction with NAT. C1 Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94550 USA. RP Lightstone, FC (reprint author), Lawrence Livermore Natl Lab, Biosci Directorate, POB 5508, Livermore, CA 94550 USA. EM felice@llnl.gov RI yang, min/G-3030-2011 FU NCI NIH HHS [CA055861] NR 72 TC 18 Z9 18 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0893-228X EI 1520-5010 J9 CHEM RES TOXICOL JI Chem. Res. Toxicol. PD SEP 18 PY 2006 VL 19 IS 9 BP 1182 EP 1190 DI 10.1021/tx0600999 PG 9 WC Chemistry, Medicinal; Chemistry, Multidisciplinary; Toxicology SC Pharmacology & Pharmacy; Chemistry; Toxicology GA 084OS UT WOS:000240543400010 PM 16978022 ER PT J AU Greene, LE Yuhas, BD Law, M Zitoun, D Yang, PD AF Greene, Lori E. Yuhas, Benjamin D. Law, Matt Zitoun, David Yang, Peidong TI Solution-grown zinc oxide nanowires SO INORGANIC CHEMISTRY LA English DT Article ID NANOSTRUCTURED ZNO ELECTRODES; LOW-TEMPERATURE GROWTH; THIN-FILMS; AQUEOUS-SOLUTION; SOLAR-CELLS; MAGNETIC SEMICONDUCTORS; EMISSION PROPERTIES; NANOROD ARRAYS; QUANTUM DOTS; DOPED ZNO AB We review two strategies for growing ZnO nanowires from zinc salts in aqueous and organic solvents. Wire arrays with diameters in the nanoscale regime can be grown in an aqueous solution of zinc nitrate and hexamethylenetetramine. With the addition of poly( ethylenimine), the lengths of the wires have been increased to 25 Am with aspect ratios over 125. Additionally, these arrays were made vertical by nucleating the wires from oriented ZnO nanocrystals. ZnO nanowire bundles have been produced by decomposing zinc acetate in trioctylamine. By the addition of a metal salt to the solution, the ZnO wires can be doped with a range of transition metals. Specifically, ZnO nanowires were homogeneously doped with cobalt and showed a marked deviation from paramagnetic behavior. We conclude by highlighting the use of these solution-grown nanowire arrays in dye-sensitized solar cells. The nanowire cells showed an improvement in the charge collection efficiency over traditional nanoparticle cells. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Yang, PD (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM p_yang@uclink.berkeley.edu NR 73 TC 484 Z9 489 U1 34 U2 389 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD SEP 18 PY 2006 VL 45 IS 19 BP 7535 EP 7543 DI 10.1021/ic0601900 PG 9 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 082QY UT WOS:000240403500004 PM 16961338 ER PT J AU Willett, RD Twamley, B Montfrooij, W Granroth, GE Nagler, SE Hall, DW Park, JH Watson, BC Meisel, MW Talham, DR AF Willett, Roger D. Twamley, Brendan Montfrooij, Wouter Granroth, Garrett E. Nagler, Stephen E. Hall, Donavan W. Park, Ju-Hyun Watson, Brian C. Meisel, Mark W. Talham, Daniel R. TI Dimethylammonium trichlorocuprate(II): Structural transition, low-temperature crystal structure, and unusual two-magnetic chain structure dictated by nonbonding chloride-chloride contacts SO INORGANIC CHEMISTRY LA English DT Article ID TETRAMETHYLAMMONIUM TRICHLORONICKELATE II; DOUBLE-HALIDE SUPEREXCHANGE; ONE-DIMENSIONAL SYSTEMS; SPIN LADDER SYSTEM; MAGNETIC-PROPERTIES; HALDANE-GAP; EXCHANGE INTERACTIONS; THEORETICAL-ANALYSIS; LAYERED SOLIDS; LINEAR-CHAIN AB Catena(dimethylammonium-bis(mu(2)-chloro)-chlorocuprate), (CH(3))(2)NH(2)CuCl(3), forms chains of Cu(2)Cl(6)(2-) bifold dimers linked along the structural chain axis by terminal chlorides forming long semicoordinate bonds to adjacent dimers. The structural chains are separated by dimethylammonium ions that hydrogen bond to chloride ions of the dimers. A structural phase transition below room temperature removes disorder in the hydrogen bonding, leaving adjacent dimers along the chain structurally and magnetically inequivalent, with alternating ferromagnetic and antiferromagnetic pairs. The coupled dimers are magnetically isolated from each other along the structural chain axis by the long semicoordinate Cu-Cl bond. However, the dimers couple to like counterparts on adjacent chains via nonbonding Cl center dot center dot center dot Cl contacts. The result is two independent magnetic chains, one an alternating antiferromagnetic chain and the other an antiferromagnetic chain of ferromagnetically coupled copper dimers, which run perpendicular to the structural chains. This magnetostructural analysis is used to fit unusual low-temperature (1.6 K) magnetization vs field data that display a two-step saturation. The structural phase transition is identified with neutron scattering and capacitance measurements, and the X-ray crystal structures are determined at room temperature and 84 K. The results appear to resolve long-standing confusion about the origins of the magnetic behavior of this compound and provide a compelling example of the importance of two-halide magnetic exchange. C1 Washington State Univ, Dept Chem, Pullman, WA 99164 USA. Univ Idaho, Res Off, Moscow, ID 83844 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32210 USA. Univ Florida, Dept Phys, Gainesville, FL 32611 USA. Univ Florida, Dept Chem, Gainesville, FL 32611 USA. RP Willett, RD (reprint author), Washington State Univ, Dept Chem, Pullman, WA 99164 USA. EM rdw@mail.wsu.edu; talham@chem.ufl.edu RI Nagler, Stephen/B-9403-2010; Nagler, Stephen/E-4908-2010; Granroth, Garrett/G-3576-2012 OI Nagler, Stephen/0000-0002-7234-2339; Granroth, Garrett/0000-0002-7583-8778 NR 56 TC 30 Z9 31 U1 0 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD SEP 18 PY 2006 VL 45 IS 19 BP 7689 EP 7697 DI 10.1021/ic060654u PG 9 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 082QY UT WOS:000240403500026 PM 16961360 ER PT J AU Yellampalle, B Averitt, RD Taylor, AJ AF Yellampalle, B. Averitt, R. D. Taylor, A. J. TI Unambiguous chirp characterization using modified-spectrum auto-interferometric correlation and pulse spectrum SO OPTICS EXPRESS LA English DT Article ID ULTRASHORT LASER-PULSES; FEMTOSECOND PULSES; OPTICAL PULSES; PHASE; AMPLITUDE AB Modified-spectrum auto-interferometric correlation ( MOSAIC), derived from a conventional second order interferometric autocorrelation trace, is a sensitive and visual chirp diagnostic method for ultrashort laser pulses. We construct several pairs of example pulse shapes that have nearly identical MOSAIC traces and demonstrate that chirp ambiguity can result when the field amplitude or spectrum are not known, thus making MOSAIC a qualitative tool for chirped pulses. However, when the pulse spectrum is known, a unique chirp reconstruction is possible. With the help of a new reconstruction technique, we experimentally demonstrate complete pulse characterization using MOSAIC envelopes and the pulse spectrum. (c) 2006 Optical Society of America C1 Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. RP Yellampalle, B (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. EM kishore@lanl.gov NR 17 TC 9 Z9 13 U1 0 U2 2 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 SEP 18 PY 2006 VL 14 IS 19 BP 8890 EP 8899 DI 10.1364/OE.14.008890 PG 10 WC Optics SC Optics GA 085XW UT WOS:000240638700045 PM 19529269 ER PT J AU Lavraud, B Thomsen, MF Borovsky, JE Denton, MH Pulkkinen, TI AF Lavraud, B. Thomsen, M. F. Borovsky, J. E. Denton, M. H. Pulkkinen, T. I. TI Magnetosphere preconditioning under northward IMF: Evidence from the study of coronal mass ejection and corotating interaction region geoeffectiveness SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID RING CURRENT DEVELOPMENT; SOLAR-WIND CONTROL; PLASMA SHEET; GEOSYNCHRONOUS ORBIT; MAGNETIC CLOUDS; GEOMAGNETIC STORMS; ION COMPOSITION; DST; EVOLUTION; DISTURBANCES AB Motivated by recent observations and simulations of the formation of a cold and dense plasma sheet in the tail of the magnetosphere under northward interplanetary magnetic field (IMF) and of the direct influence of the plasma sheet density on the ring current strength, this paper aims at (1) highlighting how the coupling of these effects may lead to a preconditioning of the magnetosphere under northward IMF and (2) performing first tests of the validity of this hypothesis. We have analyzed superposed epoch time series of various parameters to investigate the response of the magnetosphere (as indicated by the Dst index) to the passage of coronal mass ejections (CMEs) and corotating interaction regions (CIRs). We first focused on the difference between the measured Dst signature and that predicted by a semiempirical Dst model. For both CME- and CIR-driven storms the superposed epoch results show that the model Dst predictions tend to underestimate the actual storm strength (by up to 10-30%) for events that are preceded by a substantial interval of northward IMF, as opposed to those with no such preceding northward IMF. We also analyzed Los Alamos geosynchronous spacecraft data for these events. The average density and temperature measured at storm onset are substantially higher and slightly lower, respectively, for the cases with preceding northward IMF intervals. These results suggest that solar wind structures may be more geoeffective if preceded by a northward IMF interval and they are consistent with the hypothesis of a preconditioning by a cold, dense plasma sheet. A colder and denser plasma sheet may lead to a stronger ring current when that plasma is convected inward during the main phase of an ensuing storm. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Lavraud, B (reprint author), Los Alamos Natl Lab, MS D466, Los Alamos, NM 87545 USA. EM lavraud@lanl.gov RI Pulkkinen, Tuija/D-8403-2012; OI Pulkkinen, Tuija/0000-0002-6317-381X; Denton, Michael/0000-0002-1748-3710 NR 51 TC 49 Z9 49 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9380 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD SEP 16 PY 2006 VL 111 IS A9 AR A09208 DI 10.1029/2005JA011566 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 086BK UT WOS:000240647900005 ER PT J AU Zhang, YX Bahns, JT Jin, QL Divan, R Chen, LH AF Zhang, Yuexing Bahns, John T. Jin, Qiaoling Divan, Ralu Chen, Liaohai TI Toward the detection of single virus particle in serum SO ANALYTICAL BIOCHEMISTRY LA English DT Article DE fluorescence correlation spectroscopy; cross-correlation; microfluidics; soft lithography; virus-antibody interaction; dengue; virus detection; dengue virus; micro fabrication; protein/virus sorting ID FLUORESCENCE CORRELATION SPECTROSCOPY; CROSS-CORRELATION SPECTROSCOPY; DENGUE VIRUS; POLY(DIMETHYLSILOXANE); FABRICATION; ANTIBODIES; MOLECULES AB There is a grand challenge for the detection of target molecules at single molecule sensitivity in a bulk body fluid for the early diagnosis of diseases. We report our progress on tackling this challenge via the combination of fluorescence cross-correlation spectroscopy (FCCS) and micro fabricated devices toward highly sensitive detection of the dengue virus. We demonstrate that by using a dengue-specific antibody.. we can probe the individual dengue virus in a nanomolar bulk solution by following the specific association of dengue antibody using FCCS. Consequently, we designed and fabricated a microfluidic chamber array structure and were able to compartmentalize the bulk aqueous dengue sample into femtoliter volumes using such a device. More importantly we demonstrate that we can differentiate between the compartments containing the dengue virus and the virus-free compartments. Our experiment suggests that by expanding the throughput using microfluidic devices integrated with FCCS, both of which can be achieved practically, we should be able to detect single virus particle in human body fluids in the near future. (c) 2006 Elsevier Inc. All rights reserved. C1 Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Chen, LH (reprint author), Argonne Natl Lab, Biosci Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM lhchen@anl.gov RI Zhang, Yuexing/A-1675-2010 FU NINDS NIH HHS [5R01 NS 047719] NR 18 TC 17 Z9 17 U1 0 U2 9 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0003-2697 J9 ANAL BIOCHEM JI Anal. Biochem. PD SEP 15 PY 2006 VL 356 IS 2 BP 161 EP 170 DI 10.1016/j.ab.2006.06.036 PG 10 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 084HJ UT WOS:000240523700001 PM 16908003 ER PT J AU Tsibakhashvili, NY Frontasyeva, MV Kirkesali, EI Aksenova, NG Kalabegishvili, TL Murusidze, IG Mosulishvili, LM Holman, HYN AF Tsibakhashvili, Nelly Yasonovna Frontasyeva, Marina Vladimirovna Kirkesali, Elena Ivanovna Aksenova, Nadezhda Gennadievna Kalabegishvili, Tamaz Levanovich Murusidze, Ivana Georgievich Mosulishvili, Ligury Mikhailovich Holman, Hoi-Ying N. TI Epithermal neutron activation analysis of Cr(VI)-reducer basalt-inhabiting bacteria SO ANALYTICAL CHEMISTRY LA English DT Article ID ELEMENTAL COMPOSITION; ARTHROBACTER-OXYDANS; REDUCTION; RESONANCE; METALS; CELLS AB Epithermal neutron activation analysis ( ENAA) has been applied to study elemental composition of Cr(VI)-reducer bacteria isolated from polluted basalts from the Republic of Georgia. Cr(VI)-reducing ability of the bacteria was examined by electron spin resonance, demonstrating that the bacteria differ in their rates of Cr( VI) reduction. A well-pronounced correlation between the ability of the bacteria to accumulate Cr( V) and their ability to reduce Cr( V) to Cr(III) observed in our experiments is discussed. Elemental analysis of these bacteria also revealed that basalt-inhabiting bacteria are distinguished by relative contents of essential elements such as K, Na, Mg, Fe, Mn, Zn, and Co. A high rate of Cr( III) formation correlates with a high concentration of Co in the bacterium. ENAA detected some similarity in the elemental composition of the bacteria. The relatively high contents of Fe detected in the bacteria (140-340 mu g/g of dry weight) indicate bacterial adaptation to the environmental conditions typical of the basalts. The concentrations of at least 12-19 different elements were determined in each type of bacteria simultaneously starting with the major to ultratrace elements. The range of concentrations spans over 8 orders of magnitude. C1 Joint Inst Nucl Res, Dubna, Moscow Region, Russia. Andronikashvili Inst Phys, Tbilisi, Rep of Georgia. Chavchavadze State Univ, Tbilisi, Rep of Georgia. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Frontasyeva, MV (reprint author), Joint Inst Nucl Res, Dubna, Moscow Region, Russia. EM Marina@nf.jinr.ru RI Holman, Hoi-Ying/N-8451-2014 OI Holman, Hoi-Ying/0000-0002-7534-2625 NR 27 TC 7 Z9 7 U1 1 U2 10 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 SEP 15 PY 2006 VL 78 IS 18 BP 6285 EP 6290 DI 10.1021/ac051727e PG 6 WC Chemistry, Analytical SC Chemistry GA 083YO UT WOS:000240495800001 PM 16970299 ER PT J AU Li, JW Lee, JY Yeung, ES AF Li, Jiangwei Lee, Ji-young Yeung, Edward S. TI Quantitative screening of single copies of human papilloma viral DNA without amplification SO ANALYTICAL CHEMISTRY LA English DT Article ID CARCINOMA IN-SITU; CERVICAL-CANCER; CAPILLARY-ELECTROPHORESIS; MOLECULE SPECTROSCOPY; GENE-EXPRESSION; ENZYME; RISK; WORLDWIDE; PROTEINS; PRIMERS AB We describe a novel quantitative viral screening method based on single-molecule detection that does not require amplification. DNA of human papilloma virus (HPV), the major etiological agent of cervical cancer, served as the screening target in this study. Eight 100-nucleotide single-stranded DNA probes were designed complementary to the E6-E7 gene of HPV-16 DNA. The probes were covalently stained with Alexa Fluor 532 and hybridized to the target in solution. The individual hybridized molecules were imaged with an intensified charge-coupled device (ICCD) in two ways. In the single-color mode, target molecules were detected via fluorescence from hybridized probes only. This system could detect HPV-16 DNA in the presence of human genomic DNA down to 0.7 copy/ cell and had a linear dynamic range of over 6 orders of magnitude. In the dual-color mode, we employed fluorescence resonance energy transfer and added YOYO-3 dye as the acceptor. The two colors from Alexa Fluor 532 and YOYO-3 were dispersed by a transmission grating located in front of the ICCD. With this reinforced criterion for identifying the hybridized molecules, zero false-positive count was achieved. We also showed that DNA extracts from Pap test specimens did not interfere with the measurements. C1 Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Yeung, ES (reprint author), Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA. EM yeung@ameslab.gov FU NCI NIH HHS [R33 CA095942-04] NR 38 TC 23 Z9 23 U1 0 U2 3 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 SEP 15 PY 2006 VL 78 IS 18 BP 6490 EP 6496 DI 10.1021/ac060864o PG 7 WC Chemistry, Analytical SC Chemistry GA 083YO UT WOS:000240495800027 PM 16970325 ER PT J AU Berman, ESF Kulp, KS Knize, MG Wu, LG Nelson, EJ Nelson, DO Wu, KJ AF Berman, Elena S. F. Kulp, Kristen S. Knize, Mark G. Wu, Ligang Nelson, Erik J. Nelson, David O. Wu, Kuang Jen TI Distinguishing monosaccharide stereo- and structural isomers with TOF-SIMS and multivariate statistical analysis SO ANALYTICAL CHEMISTRY LA English DT Article ID ION MASS-SPECTROMETRY; PRINCIPAL COMPONENT ANALYSIS; LINKAGE POSITION; OLIGOSACCHARIDES; DERIVATIVES; HEXOSES; GAS; DISACCHARIDES; ACETATES; PENTOSES AB Time-of-flight secondary ion mass spectrometry (TOF-SIMS) is utilized to examine the mass spectra and fragmentation patterns of seven isomeric monosaccharides. Multivariate statistical analysis techniques, including principal component analysis (PCA), allow discrimination of the extremely similar mass spectra of stereoisomers. Furthermore, PCA identifies those fragment peaks that vary significantly between spectra. Heavy isotope studies confirm that these peaks are indeed sugar fragments, allow identification of the fragments, and provide clues to the fragmentation pathways. Excellent reproducibility is shown by multiple experiments performed over time and on separate samples. This study demonstrates the combined selectivity and discrimination power of TOF-SIMS and PCA and suggests new applications of the technique including differentiation of subtle chemical changes in biological samples that may provide insights into cellular processes, disease progress, and disease diagnosis. C1 Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94550 USA. Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. Lawrence Livermore Natl Lab, Computat Directorate, Livermore, CA 94550 USA. RP Berman, ESF (reprint author), Lawrence Livermore Natl Lab, Biosci Directorate, 7000 E Ave, Livermore, CA 94550 USA. EM berman2@llnl.gov; wu17@llnl.gov RI Wu, Ligang/C-7770-2009; yu, yu/C-7781-2009 NR 28 TC 38 Z9 39 U1 1 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 SEP 15 PY 2006 VL 78 IS 18 BP 6497 EP 6503 DI 10.1021/ac060865g PG 7 WC Chemistry, Analytical SC Chemistry GA 083YO UT WOS:000240495800028 PM 16970326 ER PT J AU Lee, G Lo, A Short, SA Mankelow, TJ Spring, F Parsons, SF Yazdanbakhsh, K Mohandas, N Anstee, DJ Chasis, JA AF Lee, Gloria Lo, Annie Short, Sarah A. Mankelow, Tosti J. Spring, Frances Parsons, Stephen F. Yazdanbakhsh, Karina Mohandas, Narla Anstee, David J. Chasis, Joel Anne TI Targeted gene deletion demonstrates that the cell adhesion molecule ICAM-4 is critical for erythroblastic island formation SO BLOOD LA English DT Article ID BLOOD-GROUP ANTIGENS; HEMATOPOIETIC PROGENITOR CELLS; MONONUCLEAR PHAGOCYTE SYSTEM; BONE-MARROW; ERYTHROID-DIFFERENTIATION; STAT5A(-/-)5B(-/-) MICE; ERYTHROPOIESIS; EXPRESSION; MACROPHAGES; BINDING AB Erythroid progenitors differentiate in erythroblastic islands, bone marrow niches composed of erythroblasts surrounding a central macrophage. Evidence suggests that within islands adhesive interactions regulate erythropoiesis and apoptosis. We are exploring whether erythroid intercellular adhesion molecule 4 (ICAM-4), an immunoglobulin superfamily member, participates in island formation. Earlier, we identified alpha(V) integrins as ICAM-4 counterreceptors. Because macrophages express alpha(V), ICAM-4 potentially mediates island attachments. To test this, we generated ICAM-4 knock-out mice and developed quantitative, live cell techniques for harvesting intact islands and for re-forming islands in vitro. We observed a 47% decrease in islands reconstituted from ICAM-4 null marrow compared to wild-type marrow. We also found a striking decrease in islands formed in vivo in knock-out mice. Further, peptides that block ICAM-4/alpha(V) adhesion produced a 53% to 57% decrease in reconstituted islands, strongly suggesting that ICAM-4 binding to macrophage alpha(V) functions in island integrity. Importantly, we documented that alpha(V) integrin is expressed in macrophages isolated from erythroblastic islands. Collectively, these data provide convincing evidence that ICAM-4 is critical in erythroblastic island formation via ICAM-4/alpha(V) adhesion and also demonstrate that the novel experimental strategies we developed will be valuable in exploring molecular mechanisms of erythroblastic island formation and their functional role in regulating erythropoiesis. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. New York Blood Ctr, New York, NY 10021 USA. Bristol Inst Transfus Sci, Bristol, Avon, England. RP Chasis, JA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Bldg 74,1 Cyclotron Rd, Berkeley, CA 94720 USA. EM jachasis@lbl.gov FU NIDDK NIH HHS [DK 32094, DK 56267] NR 44 TC 67 Z9 74 U1 0 U2 3 PU AMER SOC HEMATOLOGY PI WASHINGTON PA 1900 M STREET. NW SUITE 200, WASHINGTON, DC 20036 USA SN 0006-4971 J9 BLOOD JI Blood PD SEP 15 PY 2006 VL 108 IS 6 BP 2064 EP 2071 DI 10.1182/blood-2006-03-006759 PG 8 WC Hematology SC Hematology GA 082NY UT WOS:000240394800049 PM 16690966 ER PT J AU Carrado, KA Kim, JH Song, CS Castagnola, N Marshall, CL Schwartz, MM AF Carrado, K. A. Kim, J. H. Song, C. S. Castagnola, N. Marshall, C. L. Schwartz, M. M. TI HDS and deep HDS activity of CoMoS-mesostructured clay catalysts SO CATALYSIS TODAY LA English DT Article DE HDS activity; CoMoS; clay catalysys ID SILICEOUS MCM-41-SUPPORTED CATALYSTS; CO-MO CATALYSTS; HYDROTREATING CATALYSTS; PILLARED CLAYS; HYDRODESULFURIZATION CATALYSTS; SULFIDE CATALYSTS; SUPPORT; AL; 4,6-DIMETHYLDIBENZOTHIOPHENE; DIBENZOTHIOPHENE AB The goal of this work is to identify more promising supports from synthetic clay materials to advance hydrotreating catalyst development. Silica sol can be used as the silicon-containing starting material when creating nanoporous layered silicate catalysts with a certain portion of unreacted sol particles incorporated into the final matrix. The resulting structure then has mesoporosity and a unique morphology. Hectorite-based clays have been prepared using different silica sols in order to ascertain the importance of sol characteristics on the final matrix. Several techniques have been applied to characterize the materials, including XRD, TGA, N-2 porosimetry, and TEM. For hydrodesulfurization (HDS), the conversion of dibenzothiophene (DBT) to biphenyl was examined at 400 degrees C using CoMoS-loaded mesostructured clay supports. No hydrogenation or hydrocracking was observed with any of the clay supports. The most active clay was derived from Ludox silica sol AS-30 with an activity of 65% DBT conversion and 100% selectivity to biphenyl (BP). For comparison, a reference commercial catalyst displayed 94% BP selectivity. For deep HDS, the conversion of 4,6-dimethyldibenzothiophene was tested at 325 and 350 degrees C. At 325 degrees C, conversions are 92% of commercial catalysts for a CoMoS-loaded mesostructured clay derived from Ludox AM-30 silica sol. A commercially available synthetic hectorite called laponite has very low activity, indicating that the unique morphology of the mesostructured clays is important. Hydrogenolysis vs. hydrogenation pathways are compared for the deep HDS reaction. HR-TEM of the most active deep HDS catalyst revealed a multilayered MoS2 morphology. (C) 2006 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Penn State Univ, Energy Inst, Clean Fuels & Catalysis Program, University Pk, PA 16802 USA. Penn State Univ, Dept Energy & Geoenvironm Engn, University Pk, PA 16802 USA. Argonne Natl Lab, Div Chem Engn, Argonne, IL 60439 USA. RP Carrado, KA (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. EM kcarrado@anl.gov RI Song, Chunshan/B-3524-2008; Marshall, Christopher/D-1493-2015 OI Song, Chunshan/0000-0003-2344-9911; Marshall, Christopher/0000-0002-1285-7648 NR 41 TC 8 Z9 8 U1 2 U2 21 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5861 J9 CATAL TODAY JI Catal. Today PD SEP 15 PY 2006 VL 116 IS 4 BP 478 EP 484 DI 10.1016/j.cattod.2006.06.033 PG 7 WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA 085HV UT WOS:000240596100005 ER PT J AU King, DL Li, LY AF King, David L. Li, Liyu TI Removal of sulfur components from low sulfur gasoline using copper exchanged zeolite Y at ambient temperature SO CATALYSIS TODAY LA English DT Article DE copper-exchanged zeolite; CuY; Cu(I); Cu(II); desulfurization; thiophene; disulfides; thiolate ID PI-COMPLEXATION; SELECTIVE ADSORPTION; LIQUID FUELS; DESULFURIZATION; CU(I)-Y AB Copper-exchanged zeolite Y has been shown to be an effective material for removal of a variety of sulfur species from hydrocarbon streams, and both monovalent (Cu(I)) and divalent (Cu(II)Y) materials have been claimed to be effective. In this work we discuss experiments aimed at providing a direct performance comparison between the two copper-containing materials. Cu(I)Y zeolite is somewhat more effective than Cu(II)Y in removing thiophene from various fuel blends. Capacity of both materials for thiophene diminishes markedly when aromatics and/or olefins are present, and Cu(I)Y immediately turns dark on exposure to such feeds. Both materials demonstrate ability to convert thiols to disulfides at ambient temperature. (C) 2006 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. RP King, DL (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99354 USA. EM david.king@pnl.gov NR 10 TC 26 Z9 31 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5861 J9 CATAL TODAY JI Catal. Today PD SEP 15 PY 2006 VL 116 IS 4 BP 526 EP 529 DI 10.1016/j.cattod.2006.06.026 PG 4 WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA 085HV UT WOS:000240596100011 ER PT J AU Li, LY King, DL AF Li, Liyu King, David L. TI H2S removal with ZnO during fuel processing for PEM fuel cell applications SO CATALYSIS TODAY LA English DT Article DE fuel processor; ZnO; H2S; absorbent; reformate; COS ID CONTAINING GAS-MIXTURES; TEMPERATURE H2S; COS AB The efficacy of using ZnO as an absorber for the removal of H2S from small fuel processor steam reformate streams was examined. At temperatures below 300 degrees C, H2S can in principle be reduced to below 100 ppbv, required for safe operation of PEM fuel cells. The ZnO adsorbent performed predictably based on ZnO-H2S-ZnS-H2O equilibria with steam, hydrogen, and CO2 in the feed. However, addition of CO even at levels as low as 1 vol% drastically lowered the sulfur removal capability of the ZnO. This is consistent with the formation of COS by the reaction H2S + CO = H-2 + COS- ZnO is not an efficient absorber for COS. Indirect evidence is also provided for the formation of COS via the reaction CO2 + H2S = COS + H2O, which can occur in special cases when CO2 is present but neither H2O nor CO is present in the feed. The potential for COS formation compromises the ability of ZnO to deliver very low sulfur concentration reformate. (C) 2006 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. RP King, DL (reprint author), Pacific NW Natl Lab, POB 999,K2-44, Richland, WA 99354 USA. EM david.king@pnl.gov NR 8 TC 30 Z9 33 U1 2 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5861 J9 CATAL TODAY JI Catal. Today PD SEP 15 PY 2006 VL 116 IS 4 BP 537 EP 541 DI 10.1016/j.cattod.2006.06.024 PG 5 WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA 085HV UT WOS:000240596100013 ER PT J AU Mondal, S Hangun-Balkir, Y Alexandrova, L Link, D Howard, B Zandhuis, P Cugini, A Horwitz, CP Collins, TJ AF Mondal, Sujit Hangun-Balkir, Yelda Alexandrova, Larissa Link, Dirk Howard, Bret Zandhuis, Paul Cugini, Anthony Horwitz, Colin P. Collins, Terrence J. TI Oxidation of sulfur components in diesel fuel using Fe-TAML (R) catalysts and hydrogen peroxide SO CATALYSIS TODAY LA English DT Article DE oxidative desulfurization; dibenzothiophene; 4-methyidibenzothiophene; 4,6-dimethyldibenzothiophene; oxidation; Fe-TAML (R) catalyst; hydrogen peroxide; two-liquid phase; diesel ID FUTURE-RESEARCH NEEDS; ACID BIPHASIC SYSTEM; DEEP DESULFURIZATION; CHEMICAL OXIDATION; ENGINE EXHAUSTS; GAS OIL; HYDRODESULFURIZATION; DIBENZOTHIOPHENES; 4,6-DIMETHYLDIBENZOTHIOPHENE; REACTIVITIES AB Dibenzothiophene-derivatives are catalytically oxidized to their corresponding sulfone product in homogeneous and two-liquid phase systems by H2O2 with an iron containing tetraamidomacrocyclic ligand (TAML) catalyst, Fe-TAML(R). The reaction medium is slightly caustic, pH 8, and uses t-BuOH as a co-solvent for solubilizing the dibenzothiophene starting compounds and their oxidation products. Fe-TAML(R) catalyst concentrations are in the low micromolar range. H2O2 consumption is nearly stoichiometric (two-equivalents) in homogeneous conditions and only slightly less efficient under two-liquid phase conditions. The catalytic process when applied to a sample of commercial diesel fuel occurs under mild conditions with respect to temperature (50 degrees C), pressure (1 atm), and time (3 h), to remove greater than 75% of the total sulfur content of the fuel after secondary treatment with silica. Both alkyl-benzothiophenes and alkyl-dibenzothiophenes compounds in the diesel fuel were oxidized by the Fe-TAML(R)/H2O(2) system which facilitated their adsorption onto the silica. The mild reaction conditions result in no detectable over-oxidation of alkyl-dibenzothiophenes. (C) 2006 Elsevier B.V. All rights reserved. C1 Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA. Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. Parsons Project Serv Inc, South Pk, PA 15129 USA. RP Horwitz, CP (reprint author), Carnegie Mellon Univ, Dept Chem, 4400 5th Ave, Pittsburgh, PA 15213 USA. EM horwitz@andrew.cmu.edu; tc.1.u@andrew.cmu.edu RI Collins, Terrence/A-9807-2017 OI Collins, Terrence/0000-0003-2611-9184 NR 69 TC 63 Z9 71 U1 5 U2 28 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5861 J9 CATAL TODAY JI Catal. Today PD SEP 15 PY 2006 VL 116 IS 4 BP 554 EP 561 DI 10.1016/j.cattod.2006.06.025 PG 8 WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA 085HV UT WOS:000240596100015 ER PT J AU Puukilainen, E Koponen, HK Xiao, Z Suvanto, S Pakkanen, TA AF Puukilainen, Esa Koponen, Hanna-Kaisa Xiao, Zhili Suvanto, Sari Pakkanen, Tapani A. TI Nanostructured and chemically modified hydrophobic polyolefin surfaces SO COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS LA English DT Article DE polyolefin; perfluoropolyether (PFPE); nanoporous anodic aluminum oxide (AAO); nanostructuring by injection molding ID ANODIC ALUMINA; NANOSPHERE LITHOGRAPHY; POLYMER SURFACES; POROUS ALUMINA; FABRICATION; ARRAYS; FILMS; WATER; POLYPROPYLENE; POLYETHYLENE AB Hydrophobic polyolefin (PO) surfaces were prepared by perfluoropolyether (PFPE) blending and nanostructuring. Surface modifications were done by injection molding. Two high-density polyethylenes and polypropylene were melt blended with 2.0 wt.% of PFPE. Both polyethylenes formed blends with PFPE and showed improved hydrophobicity. For nanostructuring, self-ordered nanoporous mold inserts were fabricated by anodizing aluminum in polyprotic acid. Nanostructured samples were prepared with nanoporous anodic aluminum oxide masks from pure polyolefins and from PO/PFPE blends containing 2 wt.% PFPE. Nanostructuring had a marked effect on the contact angle between injection moldable polyolefins and water: well-arranged, high aspect ratio nanostructure was found over the entire surface. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Joensuu, Dept Chem, FIN-80101 Joensuu, Finland. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. RP Pakkanen, TA (reprint author), Univ Joensuu, Dept Chem, POB 111, FIN-80101 Joensuu, Finland. EM Tapani.Pakkanen@joensuu.fi RI Puukilainen, Esa/F-9730-2010 NR 47 TC 33 Z9 34 U1 5 U2 22 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-7757 J9 COLLOID SURFACE A JI Colloid Surf. A-Physicochem. Eng. Asp. PD SEP 15 PY 2006 VL 287 IS 1-3 BP 175 EP 181 DI 10.1016/j.colsurfa.2006.003.056 PG 7 WC Chemistry, Physical SC Chemistry GA 084GV UT WOS:000240521800024 ER PT J AU Caboussat, A Glowinski, R Sicilian, JM AF Caboussat, Alexandre Glowinski, Roland Sicilian, James M. TI Computation of the normal vector to a free surface by a finite element-finite volume mixed method SO COMPTES RENDUS MATHEMATIQUE LA English DT Article ID NUMERICAL-SIMULATION; APPROXIMATION; ALGORITHM; TRACKING; 2-PHASE; FLOWS AB In volume tracking finite volume schemes for free surface flows, the reconstruction of the interface and the computation of surface tension effects require an accurate approximation of the normal vector to the interface. A numerical method for the computation of the normal vector is presented here, based on a finite element approach. We use projections to interpolate the volume fraction of liquid between the finite volume mesh and a nested finite element mesh. Error estimates are obtained and numerical results show the efficiency and flexibility of the approach discussed here. C1 Univ Houston, Dept Math, Houston, TX 77204 USA. Univ Paris 06, Lab JL Lions, F-75005 Paris, France. Los Alamos Natl Lab, CCS2, Los Alamos, NM 87545 USA. RP Caboussat, A (reprint author), Univ Houston, Dept Math, Houston, TX 77204 USA. EM caboussat@math.uh.edu; roland@math.uh.edu; sicilian@lanl.gov NR 11 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER PI PARIS PA 23 RUE LINOIS, 75724 PARIS, FRANCE SN 1631-073X J9 CR MATH JI C. R. Math. PD SEP 15 PY 2006 VL 343 IS 6 BP 431 EP 436 DI 10.1016/j.crma.2006.08.010 PG 6 WC Mathematics SC Mathematics GA 100FI UT WOS:000241653100010 ER PT J AU Qiang, J Todd, D Leitner, D AF Qiang, J. Todd, D. Leitner, D. TI A 3D model for ion beam formation and transport simulation SO COMPUTER PHYSICS COMMUNICATIONS LA English DT Article DE beam formation and transport; Poisson solver ID EXTRACTION AB In this paper, we present a three-dimensional model for self consistently modeling ion beam formation from plasma ion sources and transporting in low energy beam transport systems. A multi-section overlapped computational domain has been used to break the original transport system into a number of weakly coupled subsystems. Within each subsystem, macro-particle tracking is used to obtain the charge density distribution in this subdomain. The three-dimensional Poisson equation is solved within the subdomain after each particle tracking to obtain the self-consistent space-charge forces and the particle tracking is repeated until the solution converges. Two new Poisson solvers based on a combination of the spectral method and the finite difference multigrid method have been developed to solve the Poisson equation in cylindrical coordinates for the straight beam transport section and in Frenet-Serret coordinates for the bending magnet section. This model can have important application in design and optimization of the low energy beam line optics of the proposed Rare Isotope Accelerator (RIA) front end. (c) 2006 Elsevier B.V. All rights reserved. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Qiang, J (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM jqiang@lbl.gov NR 17 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0010-4655 J9 COMPUT PHYS COMMUN JI Comput. Phys. Commun. PD SEP 15 PY 2006 VL 175 IS 6 BP 416 EP 423 DI 10.1016/j.cpc.2006.05.007 PG 8 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 082WB UT WOS:000240416800004 ER PT J AU Krishan, A Cram, LS AF Krishan, Awtar Cram, L. Scott TI Indo-US cytometry workshops SO CYTOMETRY PART B-CLINICAL CYTOMETRY LA English DT Meeting Abstract CT 21st Annual Meeting of the Clinical-Cytometry-Society CY OCT 08-10, 2006 CL Long Beach, CA SP Clin Cytometry Soc C1 Univ Miami, Miller Sch Med, Dept Pathol, Miami, FL 33152 USA. Los Alamos Natl Lab, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 1552-4949 J9 CYTOM PART B-CLIN CY JI Cytom. Part B-Clin. Cytom. PD SEP 15 PY 2006 VL 70B IS 5 MA 19 BP 370 EP 371 PG 2 WC Medical Laboratory Technology; Pathology SC Medical Laboratory Technology; Pathology GA 090TG UT WOS:000240974000026 ER PT J AU Jettestuen, E Jamtvelt, B Podladchikov, YY deVilliers, S Amundsen, HEF Meakin, P AF Jettestuen, E. Jamtvelt, B. Podladchikov, Y. Y. deVilliers, S. Amundsen, H. E. F. Meakin, P. TI Growth and characterization of complex mineral surfaces SO EARTH AND PLANETARY SCIENCE LETTERS LA English DT Article DE rough mineral surfaces; microstructures; growth mechanism; surface normal growth; travertine AB Precipitation of mineral aggregates near the Earth's surface or in subsurface fractures and cavities often produces complex microstructures and surface morphologies. Here we demonstrate how a simple surface normal growth (SNG) process may produce microstructures and surface morphologies very similar to those observed in some natural carbonate systems. A simple SNG model was used to fit observed surfaces, thus providing information about the growth history and also about the frequency and spatial distribution of nucleation events during growth. The SNG model can be extended to systems in which the symmetry of precipitation is broken, for example by fluid flow. We show how a simple modification of the SNG model in which the local growth rate depends on the distance from a fluid source and the local slope or fluid flow rate, produces growth structures with many similarities to natural travertine deposits. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Oslo, PGP, N-0316 Oslo, Norway. Idaho Natl Engn Lab, Ctr Adv Modeling & Simulat, Idaho Falls, ID 83415 USA. RP Jettestuen, E (reprint author), Univ Oslo, PGP, POB 1048, N-0316 Oslo, Norway. EM ejette@fys.uio.no RI Podladchikov, Yury/J-3907-2013; OI Podladchikov, Yury/0000-0002-6369-7277; Jamtveit, Bjorn/0000-0001-5700-1803 NR 20 TC 11 Z9 11 U1 2 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0012-821X J9 EARTH PLANET SC LETT JI Earth Planet. Sci. Lett. PD SEP 15 PY 2006 VL 249 IS 1-2 BP 108 EP 118 DI 10.1016/j.epsl.2006.06.045 PG 11 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 094FZ UT WOS:000241226500009 ER PT J AU Hilal, HS Turner, JA AF Hilal, Hikmat S. Turner, John A. TI Controlling charge-transfer processes at semiconductor/liquid junctions SO ELECTROCHIMICA ACTA LA English DT Article DE semiconductor; metalloporphyrins; band-edges; flat-band potential; open-circuit potential ID CHEMICALLY-MODIFIED ELECTRODES; MONOLITHIC TANDEM CELLS; N-TYPE; P-TYPE; LIQUID-JUNCTION; PHOTOELECTROCHEMICAL DECOMPOSITION; SURFACE CHARACTERIZATION; IMPEDANCE SPECTROSCOPY; SOLAR-CELL; GAAS AB The interfacial kinetics of charge transfer at n-GaAs/liquid junctions were controlled by anchoring positively charged species, such as tetra(4-pyridyl)porphyrinatomanganese(III), with the semiconductor surface. Unlike earlier adsorption techniques, the charges have been chemically anchored to the semiconductor surface, in this work, via a ligand. The number of charges per site (attached molecule) ranged from +1 to +5. The positive charges shifted the band-edges towards more positive potential values. The degree of shift increased with surface charge density. In the dark, the flat band potential (measured by Mott-Schottky technique) and the onset potential were shifted by up to 300 mV depending on surface charge density. Relatively less of a shift was observed during illumination of the system. Other surface characteristics, such as conversion efficiency and photoluminescence intensity, have been enhanced. The basis for these shifts and their implications with respect to control of interfacial processes are discussed. (c) 2006 Elsevier Ltd. All rights reserved. C1 An Najah N Univ, Dept Chem, Nablus, W Bank, Israel. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Hilal, HS (reprint author), An Najah N Univ, Dept Chem, POB 7, Nablus, W Bank, Israel. EM hikmathilal@yahoo.com NR 68 TC 26 Z9 26 U1 1 U2 25 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 15 PY 2006 VL 51 IS 28 BP 6487 EP 6497 DI 10.1016/j.electacta.2006.04.035 PG 11 WC Electrochemistry SC Electrochemistry GA 089BO UT WOS:000240855100036 ER PT J AU Presto, AA Granite, EJ AF Presto, Albert A. Granite, Evan J. TI Survey of catalysts for oxidation of mercury in flue gas SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Review ID FIRED POWER-PLANTS; SITU-GENERATED TITANIA; COMBUSTION FLY-ASH; COAL COMBUSTION; ELEMENTAL MERCURY; ACTIVATED CARBONS; UNBURNED CARBON; PHOTOCHEMICAL REMOVAL; ADSORPTION PROPERTIES; REDUCTION CATALYSTS AB Methods for removing mercury from flue gas have received increased attention because of recent limitations placed on mercury emissions from coal-fired utility boilers by the U. S. Environmental Protection Agency and various states. A promising method for mercury removal is catalytic oxidation of elemental mercury (Hg-0) to oxidized mercury (Hg2+), followed by wet flue gas desulfurization (FGD). FGD cannot remove Hg-0, but easily removes Hg2+ because of its solubility in water. To date, research has focused on three broad catalyst areas: selective catalytic reduction catalysts, carbon-based materials, and metals and metal oxides. We review published results for each type of catalyst and also present a discussion on the possible reaction mechanisms in each case. One of the major sources of uncertainty in understanding catalytic mercury oxidation is a lack of knowledge of the reaction mechanisms and kinetics. Thus, we propose that future research in this area should focus on two major aspects: determining the reaction mechanism and kinetics and searching for more cost-effective catalyst and support materials. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Granite, EJ (reprint author), US DOE, Natl Energy Technol Lab, POB 10940,MS 58-103A, Pittsburgh, PA 15236 USA. EM Evan.Granite@netl.doe.gov RI Presto, Albert/C-3193-2008 OI Presto, Albert/0000-0002-9156-1094 NR 89 TC 244 Z9 270 U1 17 U2 154 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 SEP 15 PY 2006 VL 40 IS 18 BP 5601 EP 5609 DI 10.1021/es060504i PG 9 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 083NP UT WOS:000240463500006 PM 17007115 ER PT J AU Martinez, CE Bazilevskaya, KA Lanzirotti, A AF Martinez, Carmen Enid Bazilevskaya, Katya A. Lanzirotti, Antonio TI Zinc coordination to multiple ligand atoms in organic-rich surface soils SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID RAY-ABSORPTION SPECTROSCOPY; HUMIC SUBSTANCES; BINDING-SITES; REDUCED SULFUR; SPECIATION; ZN; CADMIUM; COMPLEXES; CHEMISTRY; MATTER AB We report on the solid-phase speciation of naturally occurring Zn in metalliferous organic-matter-rich surface soils. Synchrotron-based studies were used to probe elemental distribution and associations in soil particles (mu-XRF) together with the mineralogy (mu-XRD) and Zn bonding environment (Zn-mu-XANES) at the micrometer-scale level. The average bonding environment of Zn was also probed for bulk soils using XANES. We found the distribution of elements within soil particles to be heterogeneous; however, some elements are consistently co-located. While conventional XRD analyses of whole soils did not identify any Zn mineral phase, synchrotron-based-mu-XRD analyses indicated that sphalerite (ZnS) is present in a particle from a wetland soil (soil labeled G3). Linear combination fit (LCF) analyses of XANES spectra collected for bulk soils (Zn-XANES) and mu m-regions (Zn-mu-XANES) within soil particles suggest Zn bonds to oxygen-, nitrogen-, and sulfur-functional groups in these sulfur-, nitrogen-, and zinc-rich organic surface soils. The XANES spectra of all bulk soils and of all mu m-regions except for the wetland soil (G3), where ZnS was the most significant constituent, were best fitted by the Zn-arginine reference compound and therefore seems to indicate Zn bonding to nitrogen. Thus, these results provide compelling evidence of the formation of highly covalent Zn-organic bonds in the organic-rich surface soils that were studied. This may explain in part why metal partition coefficients (K-d) are generally higher in organic soils, and why the toxic thresholds for total metal concentrations are higher in organic than in mineral soils. C1 Penn State Univ, Dept Crop & Soil Sci, University Pk, PA 16802 USA. Univ Chicago, Consortium Adv Radiat Sources, Chicago, IL 60637 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source, New York, NY USA. RP Martinez, CE (reprint author), Penn State Univ, Dept Crop & Soil Sci, University Pk, PA 16802 USA. EM cem17@psu.edu NR 34 TC 27 Z9 28 U1 2 U2 23 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 SEP 15 PY 2006 VL 40 IS 18 BP 5688 EP 5695 DI 10.1021/es0608343 PG 8 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 083NP UT WOS:000240463500018 PM 17007127 ER PT J AU Gallo, M Nenoff, TM Mitchell, MC AF Gallo, Marco Nenoff, Tina M. Mitchell, Martha C. TI Selectivities for binary mixtures of hydrogen/methane and hydrogen/carbon dioxide in silicalite and ETS-10 by Grand Canonical Monte Carlo techniques SO FLUID PHASE EQUILIBRIA LA English DT Article DE Grand Canonical Monte Carlo; selectivities; adsorption isotherms; ETS-10; silicalite ID MICROPOROUS TITANOSILICATE ETS-10; MOLECULAR-DYNAMICS SIMULATIONS; METAL-ORGANIC MATERIALS; NANOPOROUS MATERIALS; ZEOLITE SILICALITE; CRYSTAL-STRUCTURE; ADSORPTION; METHANE; STORAGE; DIFFUSION AB In this study the separation capabilities of silicalite and the titanosilicate molecular sieve ETS-10 for binary mixtures of hydrogen/methane and hydrogen/carbon dioxide were evaluated by equilibrium molecular simulation techniques. This is the first molecular simulation study that presents mixture adsorption isotherms of these components in silicalite and ETS-10, and determines selectivities based on the simulation results. Grand Canonical Monte Carlo (GCMC) simulations were carried out for pure components and binary mixtures for hydrogen/carbon dioxide and hydrogen/methane at 298 K to determine pure and mixture adsorption isotherms. The pure and mixture adsorption isotherms were calculated up to pressures of approximately 2000 bar. The results of this study indicate that the separation of hydrogen from methane or from carbon dioxide in silicalite would be successful, since hydrogen in a 50% bulk mixture does not adsorb unless the pressure is very high, on the order of 500 bar. In contrast, in ETS-10, hydrogen in a 50% bulk mixture adsorbs at a pressure near 10 bar. Simulations of adsorption in ETS-10 show at low, intermediate and high pressures a higher selectivity for the separation of carbon dioxide from hydrogen than the separation of methane from hydrogen. Simulations of adsorption in silicalite show a higher selectivity for the separation of carbon dioxide from hydrogen than the methane/hydrogen separation at high pressures only. Analysis of isosteric heat of adsorption information indicates that silicalite is energetically homogeneous with the adsorbates. In contrast. ETS-10 has energetic heterogeneity, as shown by the decrease of the heat of adsorption with increasing loading. (c) 2006 Elsevier B.V. All rights reserved. C1 New Mexico State Univ, Dept Chem Engn, Las Cruces, NM 88003 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Mitchell, MC (reprint author), New Mexico State Univ, Dept Chem Engn, POB 30001,MSC 3805, Las Cruces, NM 88003 USA. EM martmitc@nmsu.edu RI Gallo, Marco/B-7345-2012; Mitchell, Martha/A-9002-2013 OI Mitchell, Martha/0000-0003-0054-1977 NR 57 TC 34 Z9 34 U1 2 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3812 J9 FLUID PHASE EQUILIBR JI Fluid Phase Equilib. PD SEP 15 PY 2006 VL 247 IS 1-2 BP 135 EP 142 DI 10.1016/j.fluid.2006.06.014 PG 8 WC Thermodynamics; Chemistry, Physical; Engineering, Chemical SC Thermodynamics; Chemistry; Engineering GA 084VR UT WOS:000240563000017 ER PT J AU Zhu, C Veblen, DR Blum, AE Chipera, SJ AF Zhu, Chen Veblen, David R. Blum, Alex E. Chipera, Stephen J. TI Naturally weathered feldspar surfaces in the Navajo Sandstone aquifer, Black Mesa, Arizona: Electron microscopic characterization SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID ALBITE-WATER SYSTEM; 200 DEGREES C; BASALT-DERIVED PALEOELEVATIONS; HYDROGEN-ENRICHED LAYERS; COLORADO PLATEAU UPLIFT; PURE OU CHARGEE; LABRADORITE FELDSPAR; AQUEOUS-SOLUTIONS; HIGH-RESOLUTION; HYDROTHERMAL CONDITIONS AB Naturally weathered feldspar surfaces in the Jurassic Navajo Sandstone at Black Mesa, Arizona, was characterized with high-resolution transmission and analytical electron microscope (HRTEM-AEM) and field emission gun scanning electron microscope (FEG-SEM). Here, we report the first HRTEM observation of a 10-nm thick amorphous layer on naturally weathered K-feldspar in currently slightly alkaline groundwater. The amorphous layer is probably deficient in K and enriched in Si. In addition to the amorphous layer, the feldspar surfaces are also partially coated with tightly adhered kaolin platelets. Outside of the kaolin coatings, feldspar grains are covered with a continuous 3-5 mu m thick layer of authigenic smectite, which also coats quartz and other sediment grains. Authigenic K-feldspar overgrowth and etch pits were also found on feldspar grains. These characteristics of the aged feldspar surfaces accentuate the differences in reactivity between the freshly ground feldspar powders used in laboratory experiments and feldspar grains in natural systems, and may partially contribute to the commonly observed apparent laboratory-field dissolution rate discrepancy. At Black Mesa, feldspars in the Navajo Sandstone are dissolving at similar to 10(5) times slower than laboratory rate at comparable temperature and pH under far from equilibrium condition. The tightly adhered kaolin platelets reduce the feldspar reactive surface area, and the authigenic K-feldspar overgrowth reduces the feldspar reactivity. However, the continuous smectite coating layer does not appear to constitute a diffusion barrier. The exact role of the amorphous layer on feldspar dissolution kinetics depends on the origin of the layer (leached layer versus re-precipitated silica), which is uncertain at present. However, the nanometer thin layer can be detected only with HRTEM, and thus our study raises the possibility of its wide occurrence in geological systems. Rate laws and proposed mechanisms should consider the possibility of this amorphous layer on feldspar surface. (c) 2006 Elsevier Inc. All rights reserved. C1 Indiana Univ, Dept Geol Sci, Bloomington, IN 47405 USA. Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA. US Geol Survey, Boulder, CO 80308 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Zhu, C (reprint author), Indiana Univ, Dept Geol Sci, Bloomington, IN 47405 USA. EM chenzhu@indiana.edu RI Zhu, Chen/A-5356-2010 OI Zhu, Chen/0000-0001-5374-6787 NR 82 TC 67 Z9 69 U1 2 U2 40 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 SEP 15 PY 2006 VL 70 IS 18 BP 4600 EP 4616 DI 10.1016/j.gca.2006.07.013 PG 17 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 091BS UT WOS:000241001400003 ER PT J AU Wright, HMN Roberts, JJ Cashman, KV AF Wright, Heather M. N. Roberts, Jeffery J. Cashman, Katharine V. TI Permeability of anisotropic tube pumice: Model calculations and measurements SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID FRAGMENTATION; POROSITY; MAGMA; FLOW; SIMULATION; LIPARI AB We examine permeable flow through porous materials using volcanic pyroclasts with simple pore geometries. Laminar lattice-Boltzmann (LB) fluid flow simulations through 3-D synchrotron x-ray microtomographic images allow us to model fluid flow through anisotropic pumiceous volcanic samples ( tube pumice). We find a good correspondence between calculated permeability ( using both simple approximations and LB simulations) and maximum laboratory permeability measured parallel to the direction of vesicle elongation in most tube pumice samples. Moreover, this comparison demonstrates that small vesicles control fluid flow through the pore structure of tube pumice, even when large, but isolated, vesicles are present. However, neither simple approximations nor LB models for flow through small tomographic volumes can adequately model permeable flow perpendicular to vesicle elongation or in material with complex geometries. This mismatch illustrates current limitations in both resolution of x-ray tomography for delicate pumice structures and shows the importance of scale in LB calculations. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Oregon, Dept Geol Sci, Eugene, OR 97403 USA. RP Wright, HMN (reprint author), Univ Oregon 1272, Dept Geol Sci, Eugene, OR 97403 USA. EM hwright1@uoregon.edu RI Wright, Heather/K-4500-2012 OI Wright, Heather/0000-0001-9013-507X NR 23 TC 43 Z9 43 U1 0 U2 7 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD SEP 15 PY 2006 VL 33 IS 17 AR L17316 DI 10.1029/2006GL027224 PG 6 WC Geosciences, Multidisciplinary SC Geology GA 085ZK UT WOS:000240642700007 ER PT J AU Follstaedt, DM Norman, AK Doyle, BL McDaniel, FD AF Follstaedt, D. M. Norman, A. K. Doyle, B. L. McDaniel, F. D. TI Strain fields around high-energy ion tracks in alpha-quartz SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID PLASTIC-DEFORMATION; BOMBARDMENT; BEAM; FLOW AB Transmission electron microscopy has been used to image the tracks of high-energy Au-197(+26) (374 MeV) and I-127(+18) (241 MeV) ions incident in a nonchanneling direction through a prethinned specimen of hexagonal alpha-quartz (SiO2). These ions have high electronic stopping powers in quartz, 24 and 19 keV/nm, respectively, which are sufficient to produce a disordered latent track. When the tracks are imaged with diffraction contrast using several different reciprocal lattice vectors, they exhibit a radial strain extending outward from their disordered centerline approximately 16 nm into the crystalline surroundings. The images are consistent with a radial strain field with cylindrical symmetry around the amorphous track, like that found in models developed to account for the lateral expansion of amorphous SiO2 films produced by irradiation with high-energy ions. These findings provide an experimental basis for increased confidence in such modeling. (c) 2006 American Institute of Physics. C1 Sandia Natl Labs, Radiat Solid Interact & Proc Dept 1111, Albuquerque, NM 87185 USA. Univ N Texas, Dept Phys, Ion Beam Modificat & Anal Lab, Denton, TX 76203 USA. RP Follstaedt, DM (reprint author), Sandia Natl Labs, Radiat Solid Interact & Proc Dept 1111, POB 5800,MS 1056, Albuquerque, NM 87185 USA. EM dmfolls@sandia.gov NR 19 TC 2 Z9 2 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 SEP 15 PY 2006 VL 100 IS 6 AR 064306 DI 10.1063/1.2345029 PG 6 WC Physics, Applied SC Physics GA 089JL UT WOS:000240876600100 ER PT J AU Kamakura, S Sakamoto, N Ogawa, H Tsuchida, H Inokuti, M AF Kamakura, Sachie Sakamoto, Naoki Ogawa, Hidemi Tsuchida, Hidetsugu Inokuti, Mitio TI Mean excitation energies for the stopping power of atoms and molecules evaluated from oscillator-strength spectra SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ANISOTROPIC DIPOLE PROPERTIES; DISPERSION ENERGIES; EFFECTIVE CHARGE; RADIATION ACTION; ALPHA-PARTICLES; COLLISION DATA; NORMAL ALKANES; GROUND-STATE; DISTRIBUTIONS; COEFFICIENTS AB The mean excitation energy for the stopping power of matter, usually expressed by symbol I, is the only nontrivial material property in Bethe's [Ann. Phys. 5, 325 (1930)] asymptotic stopping-power formula. It is therefore a crucial input for the evaluation of stopping power for swift charged particles. To calculate the I value of a material from its definition, it is necessary to know the oscillator-strength spectrum of the material in question over the entire range of the excitation energy. We evaluate the mean excitation energies of 32 atoms and molecules from the oscillator-strength spectra that were published by Berkowitz in 2002 [Atomic and Molecular Photoabsorption: Absolute Total Cross Sections (Academic, San Diego, 2002)]. We find that most of the present I values are consistent with those given in the literature. The I values of NO2, O-3, and C-60 in particular are evaluated in the present work. For buckminsterfullerene C-60, an estimation of the I value is made also using the local-plasma approximation, in an attempt at understanding differences in the I values of carbon in a free atom, a C-60 molecule, and graphite. Systematic trends of I values obtained in the present calculation are discussed, in the context of the Thomas-Fermi model. (c) 2006 American Institute of Physics. C1 Nara Womens Univ, Dept Phys, Nara 6308506, Japan. Kyoto Univ, Quantum Sci & Engn Ctr, Kyoto 6110011, Japan. Argonne Natl Lab, Argonne, IL 60439 USA. RP Sakamoto, N (reprint author), Nara Womens Univ, Dept Phys, Nara 6308506, Japan. EM sakamoto@phys.nara-wu.ac.jp NR 55 TC 19 Z9 19 U1 3 U2 11 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 SEP 15 PY 2006 VL 100 IS 6 AR 064905 DI 10.1063/1.2345478 PG 12 WC Physics, Applied SC Physics GA 089JL UT WOS:000240876600130 ER PT J AU Ledbetter, H Migliori, A AF Ledbetter, Hassel Migliori, Albert TI A general elastic-anisotropy measure SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID 2-BODY INTERATOMIC POTENTIALS; LATTICE MODEL; METALS; CONSTANTS; TEXTURE AB We propose an elastic-anisotropy measure. Zener's familiar anisotropy index A=2C(44)/(C-11-C-12) applies only to cubic symmetry [Elasticity and Anelasticity of Metals (University of Chicago Press, Chicago, 1948), p. 16]. Its extension to hexagonal symmetry creates ambiguities. Extension to orthorhombic (or lower) symmetries becomes meaningless because C-11-C-12 loses physical meaning. We define elastic anisotropy as the squared ratio of the maximum/minimum shear-wave velocity. We compute the extrema velocities from the Christoffel equations [M. Musgrave, Crystal Acoustics (Holden-Day, San Francisco, 1970), p. 84]. The measure is unambiguous, applies to all crystal symmetries (cubic-triclinic), and reduces to Zener's definition in the cubic-symmetry limit. The measure permits comparisons between and among different crystal symmetries, say, in allotropic transformations or in a homologous series. It gives meaning to previously unanswerable questions such as the following: is zinc (hexagonal) more or less anisotropic than copper (cubic)? is alpha-uranium (orthorhombic) more or less anisotropic than delta-plutonium (cubic)? The most interesting finding is that close-packed-hexagonal elements show an anisotropy near 1.3, about half that of their close-packed-cubic counterparts. A central-force near-neighbor model supports this finding. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Ledbetter, H (reprint author), Los Alamos Natl Lab, E536, Los Alamos, NM 87545 USA. EM migliori@lanl.gov NR 29 TC 46 Z9 47 U1 2 U2 20 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 SEP 15 PY 2006 VL 100 IS 6 AR 063516 DI 10.1063/1.2338835 PG 5 WC Physics, Applied SC Physics GA 089JL UT WOS:000240876600035 ER PT J AU Lee, SK Hesse, D Gosele, U Lee, HN AF Lee, Sung Kyun Hesse, Dietrich Gosele, Ulrich Lee, Ho Nyung TI Influence of miscut Y2O3-stabilized ZrO2 substrates on the azimuthal domain structure and ferroelectric properties of epitaxial La-substituted Bi4Ti3O12 films SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SRBI2TA2O9 THIN-FILMS; BI3.25LA0.75TI3O12 FILMS; VICINAL (001)SRTIO3; GROWTH; SRTIO3; POLARIZATION; ORIENTATION; SRBI2NB2O9; SI(100) AB We have investigated the influence of both miscut angle and miscut direction of Y2O3-stabilized ZrO2 (YSZ) (100) single crystal substrates on the azimuthal domain structure of SrRuO3 electrode layers as well as of La-substituted Bi4Ti3O12 (BLT) ferroelectric thin films, both grown on these substrates by pulsed laser deposition. X-ray diffraction phi scan and pole figure characterizations revealed that the YSZ[011] miscut direction is more effective to uniformly reduce the number of azimuthal domain variants in the films than the YSZ[001] miscut direction. The BLT films on YSZ(100) substrates with miscut angle of 5 degrees and [011] miscut direction involve only half the number of azimuthal domains, compared to the BLT films on exactly cut YSZ(100) substrates. Atomic force microscopy and plan-view transmission electron microscopy also confirmed that almost all BLT grains on these miscut YSZ(100) substrates are arranged along only two (out of four) specific azimuthal directions. The BLT films on YSZ(100) substrates with 5 degrees miscut towards YSZ[011] showed an about 1.3 times higher remanent polarization (P-r=12.5 mu C/cm(2)) than the BLT films on exactly cut YSZ(100) substrates (P-r=9.5 mu C/cm(2)), due most probably to a lower areal density of azimuthal domain boundaries. It thus appears that reducing the structural domains can be an effective way to further enhance the ferroelectric properties of multiply twinned, epitaxial ferroelectric films. (c) 2006 American Institute of Physics. C1 Max Planck Inst Microstruct Phys, D-06120 Halle, Germany. Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Lee, SK (reprint author), Max Planck Inst Microstruct Phys, Weinberg 2, D-06120 Halle, Germany. EM sklee@mpi-halle.de RI Lee, Ho Nyung/K-2820-2012 OI Lee, Ho Nyung/0000-0002-2180-3975 NR 23 TC 6 Z9 6 U1 0 U2 15 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD SEP 15 PY 2006 VL 100 IS 6 AR 064101 DI 10.1063/1.2345576 PG 7 WC Physics, Applied SC Physics GA 089JL UT WOS:000240876600088 ER PT J AU Maskaly, KR Hsiao, VKS Cartwright, AN Prasad, PN Lloyd, PF Bunning, TJ Carter, WC AF Maskaly, Karlene Rosera Hsiao, Vincent K. S. Cartwright, Alexander N. Prasad, Paras N. Lloyd, P. F. Bunning, Timothy J. Carter, W. Craig TI Experimental verification of the applicability of the homogenization approximation to rough one-dimensional photonic crystals using a holographically fabricated reflection grating SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID BANDGAP AB The theoretical reflectance spectrum of a one-dimensional photonic crystal with large amounts of interfacial roughness has been calculated using a previously proposed method, and compared to the actual experimental reflectivity of the structure. The photonic crystal was fabricated using a simple and fast method involving the holographic exposure of a liquid crystal/photosensitive prepolymer syrup via the self-interference patterns from two laser beams. The calculated reflectance spectrum for this structure matched the experimental one extremely well, giving very similar reflectivity peak positions and intensities. Slight discrepancies between the two reflectance spectra are attributed to either small variations in the microstructure of the reflection grating beyond that which is captured in the transmission electron micrograph, or the dispersion of the polymer which was not taken into account. These results serve as experimental verification of the theory for rough photonic crystals reported previously. (c) 2006 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. SUNY Buffalo, Inst Lasers Photon & Biophoton, Buffalo, NY 14260 USA. AF Res Lab, Wright Patterson AFB, OH 45433 USA. MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA. RP Maskaly, KR (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM karlene@alum.mit.edu; anc@buffalo.edu RI Cartwright, Alexander/C-4380-2008; Carter, W/K-2406-2012 OI Cartwright, Alexander/0000-0002-0921-8036; NR 13 TC 5 Z9 5 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 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD SEP 15 PY 2006 VL 100 IS 6 AR 066103 DI 10.1063/1.2336346 PG 3 WC Physics, Applied SC Physics GA 089JL UT WOS:000240876600139 ER PT J AU Millett, JCF Meziere, YJE Iii, GTG Cerreta, EK Bourne, NK AF Millett, J. C. F. Meziere, Y. J. E. III, G. T. Gray Cerreta, E. K. Bourne, N. K. TI The response of the intermetallic compound Ni3Al to one-dimensional shock loading SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID POLYCRYSTALLINE NI3AL; SHEAR-STRENGTH; STRESS; DEFORMATION; ALLOYS; GAUGES; WAVE; CALIBRATION; BEHAVIOR; BORON AB The shock response of the intermetallic compound Ni3Al (doped with boron to enhance ductility) has been investigated to determine equation of state and shock induced mechanical properties, and the response is compared to that of pure nickel. Examination of the Hugoniot data suggests that the Ni3Al has a higher compressibility than pure nickel. Elastic precursor decay has been observed, although due to the limited number of specimens available, we were not able to determine the point where the elastic amplitude became stable. Spall and shear strengths were observed to increase to a peak value (at a shock stress of between 6 and 7 GPa) before dropping again. We believe that this may be due to increasing amounts of damage behind the shock front as shocks of increased stress are applied. In a similar manner, spall strength was observed to decrease with pulse duration, again, most likely due to damage accumulating behind the shock front. Finally, it was observed that this material was brittle under all shock loading conditions studied in this investigation. We have proposed, due to the extremely high dislocation velocities imposed by the shock induced strain rates, that boron has effectively been removed from dislocations and hence cannot enhance ductility. (c) 2006 American Institute of Physics. C1 Cranfield Univ, Def Acad United Kingdom, Swindon SN6 8LA, Wilts, England. Los Alamos Natl Lab, MST 8, Los Alamos, NM 87545 USA. Univ Manchester, Manchester M60 1QD, Lancs, England. RP Millett, JCF (reprint author), AWE, Reading RG7 4PR, Berks, England. EM jeremy.millett@awe.co.uk RI Bourne, Neil/A-7544-2008 NR 37 TC 5 Z9 5 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 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD SEP 15 PY 2006 VL 100 IS 6 AR 063506 DI 10.1063/1.2347806 PG 10 WC Physics, Applied SC Physics GA 089JL UT WOS:000240876600025 ER PT J AU Wang, ZG Zu, XT Gao, F Weber, WJ AF Wang, Zhiguo Zu, Xiaotao Gao, Fei Weber, William J. TI Atomic-level study of melting behavior of GaN nanotubes SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MOLECULAR-DYNAMICS SIMULATIONS; GALLIUM NITRIDE NANOTUBES; FORMATION MECHANISM; PRESSURE; DEFECTS; CRYSTAL; SILICON; GROWTH; ORDER AB Molecular dynamics simulations with a Stillinger-Weber potential have been used to investigate the melting behavior of wurtzite-type single-crystalline GaN nanotubes. The simulations show that the melting temperature of the GaN nanotubes increases with the thickness of the nanotubes to a saturation value, which is close to the melting temperature of a GaN slab. The results reveal that the nanotubes begin to melt at the surface, and then the melting rapidly extends to the interior of the nanotubes as the temperature increases. The melting temperature of a single-crystalline GaN nanotube with [100]-oriented lateral facets is higher than that with [110]-oriented lateral facets for the same thickness. (c) 2006 American Institute of Physics. C1 Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Wang, ZG (reprint author), Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China. EM zgwang_dr@yahoo.com; xiaotaozu@yahoo.com; fei.gao@pnl.gov RI Weber, William/A-4177-2008; Gao, Fei/H-3045-2012; Wang, Zhiguo/B-7132-2009 OI Weber, William/0000-0002-9017-7365; NR 41 TC 25 Z9 25 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 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD SEP 15 PY 2006 VL 100 IS 6 AR 063503 DI 10.1063/1.2345616 PG 6 WC Physics, Applied SC Physics GA 089JL UT WOS:000240876600022 ER PT J AU Ryutova, M AF Ryutova, M. TI Coupling effects throughout the solar atmosphere: 2. Model of energetically open circuit SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID TRANSITION-REGION; MAGNETIC-FIELDS; ACTIVE REGIONS; CORONAL LOOPS; ALFVEN WAVES; FLARES; RECONNECTION AB [ 1] EUV structures in the solar atmosphere are studied on the basis of the energetically open equivalent circuits. The systems consist of current carrying magnetic loops that interconnect a high beta energy-production region with a low b dissipation region and include the transition region where the most efficient generation of currents and transport of the accumulated energy through the resistive stresses occurs. As nonconservative systems with a source and sink of energy, they may be driven into various dynamic forms via nonlinear processes with continuous flow of matter and energy. The corresponding equivalent circuit equation has the form of the Van der Pol oscillator. Depending on the coefficients determined by the system parameters, this equation describes different behaviors of the EUV structures including long-living steady loops with subtle oscillations, loops in the relaxation regime, and the periodically flaring and exploding loop systems. The model predicts that the EUV loops must have a filamentary structure and allows us to estimate the limiting currents and critical radii of elemental filaments associated with the stability criteria. Simple relations between the parameters, most of which are observables, may provide reliable diagnostic tools. C1 Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. RP Ryutova, M (reprint author), Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. EM ryutova1@llnl.gov NR 32 TC 7 Z9 7 U1 0 U2 0 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 15 PY 2006 VL 111 IS A9 AR A09102 DI 10.1029/2005JA011539 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 086BH UT WOS:000240647600005 ER PT J AU Saripalli, KP Lindberg, MJ Meyer, PD AF Saripalli, K. Prasad Lindberg, Michael J. Meyer, Philip D. TI Measurement of effect of chemical reactions on the hydrologic properties of fractured glass media using a tri-axial flow and transport apparatus SO JOURNAL OF HYDROLOGY LA English DT Article DE fractured media; 3D; anisotropy; tracers; hydrologic properties; conductivity; diagenesis ID SINGLE FRACTURE; SOLUTE TRANSPORT; POROUS-MEDIA; FLUID-FLOW; INJECTION WELL; PERMEABILITY; PERFORMANCE; PARAMETERS; DISPERSION; MODEL AB Understanding the effect of chemical reactions on the hydrologic properties of subsurface media is critical to many natural and engineered sub-surface systems. Methods and information for such characterization of fractured media are severely lacking. Influence of glass corrosion (precipitation and dissolution) reactions on fractured glass blocks HAN28 and LAWBP1, two candidate waste glass forms for a proposed immobilized low-activity waste (ILAW) disposal facility at the Hanford, WA site, was investigated. Flow and tracer transport experiments were conducted in such randomly and multiply fractured ILAW glass blocks, before and after subjecting them to corrosion using vapor hydration testing (VHT) at 200 degrees C temperature and 200 psig (1379 KPa) pressure, causing the precipitation of alteration products. A triaxial fractured media flow and transport experimental apparatus, which allows the simultaneous measurement of flow and transport properties and their anisotropy, has been designed and built for this purpose. Such apparatus for fractured media characterization are being reported in the literature only recently. Hydraulic properties of fractured blocks were measured in different orientations and along different cardinal directions, before and after glass corrosion reactions. Miscible displacement experiments using a non-reactive dye were also conducted, before and after glass corrosion reactions, to study the tracer transport behavior through such media. Initial efforts to analyze breakthrough curve (BTC) data using a 1D advection dispersion equation (ADE) solution revealed that a different fractured media transport model, which accurately accounts for the heterogeneous transport behavior in 3D, may be necessary for such interpretation. It was found that glass reactions could have a significant influence on the hydrologic properties of fractured ILAW glass media. The methods and results are useful to better understand the effect of chemical reactions on the hydrologic properties of fractured geomedia in general and glass media in particular. (c) 2006 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Saripalli, KP (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM prasad.saripalli@pnl.gov NR 36 TC 0 Z9 0 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-1694 J9 J HYDROL JI J. Hydrol. PD SEP 15 PY 2006 VL 328 IS 3-4 SI SI BP 685 EP 693 DI 10.1016/j.jhydrol.2006.01.017 PG 9 WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources SC Engineering; Geology; Water Resources GA 086YO UT WOS:000240709400026 ER PT J AU Fontenot, AP Keizer, TS McCleskey, M Mack, DG Meza-Romero, R Huan, JY Edwards, DM Chou, YK Vandenbark, AA Scott, B Burrows, GG AF Fontenot, Andrew P. Keizer, Timothy S. McCleskey, Mark Mack, Douglas G. Meza-Romero, Roberto Huan, Jianya Edwards, David M. Chou, Yuan K. Vandenbark, Arthur A. Scott, Brian Burrows, Gregory G. TI Recombinant HLA-DP2 binds beryllium and tolerizes beryllium-specific pathogenic CD4(+) T cells SO JOURNAL OF IMMUNOLOGY LA English DT Article ID MHC-CLASS-II; MYELIN BASIC-PROTEIN; EXPERIMENTAL AUTOIMMUNE ENCEPHALOMYELITIS; MAJOR HISTOCOMPATIBILITY COMPLEX; BOUND SINGLE PEPTIDES; HLA-DP; RECEPTOR LIGANDS; BETA-CHAIN; PROLIFERATIVE RESPONSE; CRYPTIC PEPTIDES AB Chronic beryllium disease is a lung disorder caused by beryllium exposure in the workplace and is characterized by granulomatous inflammation and the accumulation of beryllium-specific, HLA-DP2-restricted CD4(+) T lymphocytes in the lung that proliferate and secrete Th1-type cytokines. To characterize the interaction among HLA-DP2, beryllium, and CD4(+) T cells, we constructed rHLA-DP2 and rHLA-DP4 molecules consisting of the alpha-1 and beta-1 domains of the HLA-DP molecules genetically linked into single polypeptide chains. Peptide binding to rHLA-DP2 and rHLA-DP4 was consistent with previously published peptide-binding motifs for these MHC class II molecules, with peptide binding dominated by aromatic residues in the PI pocket. Be-9 nuclear magnetic resonance spectroscopy showed that beryllium binds to the HLA-DP2-derived molecule, with no binding to the HLA-DP4 molecule that differs from DP2 by four amino acid residues. Using beryllium-specific CD4(+) T cell lines derived from the lungs of chronic beryllium disease patients, beryllium presentation to those cells was independent of Ag processing because fixed APCs were capable of presenting BeSO4 and inducing T cell proliferation. Exposure of beryllium-specific CD4(+) T cells to BeSO4-pulsed, plate-bound rHLA-DP2 molecules induced IFN-gamma secretion. In addition, pretreatment of beryllium-specific CD4(+) T cells with BeSO4-pulsed, plate-bound HLA-DP2 blocked proliferation and IL-gamma secretion upon re-exposure to beryllium presented by APCs. Thus, the rHLA-DP2 molecules described herein provide a template for engineering variants that retain the ability to tolerize pathogenic CD4(+) T cells, but do so in the absence of the beryllium Ag. C1 Oregon Hlth & Sci Univ, Dept Neurol, Portland, OR 97239 USA. Oregon Hlth & Sci Univ, Dept Biochem & Mol Biol, Portland, OR 97239 USA. Univ Colorado, Hlth Sci Ctr, Dept Med, Denver, CO 80206 USA. Univ Colorado, Hlth Sci Ctr, Dept Immunol, Denver, CO 80206 USA. Los Alamos Natl Lab, Dept Chem, Los Alamos, NM 87545 USA. RP Burrows, GG (reprint author), Oregon Hlth & Sci Univ, Dept Neurol, UHS-46,3181 SW Sam Jackson Pk Rd, Portland, OR 97239 USA. EM ggb@ohsu.edu RI McCleskey, Thomas/J-4772-2012; Scott, Brian/D-8995-2017 OI Scott, Brian/0000-0003-0468-5396 FU NHLBI NIH HHS [HL62410, R01 HL062410]; NIEHS NIH HHS [ES10554, ES11810] NR 65 TC 23 Z9 23 U1 0 U2 1 PU AMER ASSOC IMMUNOLOGISTS PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 USA SN 0022-1767 J9 J IMMUNOL JI J. Immunol. PD SEP 15 PY 2006 VL 177 IS 6 BP 3874 EP 3883 PG 10 WC Immunology SC Immunology GA 083RG UT WOS:000240475300043 PM 16951350 ER PT J AU Hestekin, JA Gilbert, EP Henry, MP Datta, R Martin, EJS Snyder, SW AF Hestekin, Jamie A. Gilbert, Elliot P. Henry, Michael P. Datta, Rathin Martin, Edward J. St. Snyder, Seth W. TI Modified porous Nafion (R): Membrane characterization and two-phase separations SO JOURNAL OF MEMBRANE SCIENCE LA English DT Article DE Nafione (R); membranes; Nafion (R) modification; emulsion separations; neutron scattering; nanofiltration ID PERFLUORINATED IONOMER MEMBRANES; ANGLE NEUTRON-SCATTERING; TRANSPORT-PROPERTIES; FUEL-CELLS; WATER; EMULSIONS; ACID; OIL; PERVAPORATION; DISPERSIONS AB Perfluorosulfonated ionomer membranes (Nation (R)) were modified by a chemical treatment to increase the permeability of membrane structures. The treatment consisted of a single phase propylene carbonate-water mixture which, in the presence of the sulfonic acid groups of the Nation (R), yielded CO2. This CO2 presumably expanded having the effect of creating larger pores within the Nafion (R) framework. The resulting membrane had filtration characteristics in the ultrafiltration-microfiltration range with a maximum flux of similar to 10kg m(-2) h at 1.3782 x 105 Pa (20 psig). These structures were characterized using flux, solute rejection, neutron scattering and water volume measurements. Further, these membranes were found to be suitable for emulsion separations with the water phase permeating through the membrane. In preliminary results, a water-xylene mixture exhibited a single phase permeate with approximately 60% of the flux of pure water. (c) 2006 Published by Elsevier B.V. C1 Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA. RP Snyder, SW (reprint author), Argonne Natl Lab, Div Energy Syst, 9700 S Cass Ave, Argonne, IL 60439 USA. EM seth@anl.gov RI Gilbert, Elliot/A-5566-2010 OI Gilbert, Elliot/0000-0001-6413-7813 NR 36 TC 7 Z9 7 U1 0 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0376-7388 J9 J MEMBRANE SCI JI J. Membr. Sci. PD SEP 15 PY 2006 VL 281 IS 1-2 BP 268 EP 273 DI 10.1016/j.memsci.2006.03.049 PG 6 WC Engineering, Chemical; Polymer Science SC Engineering; Polymer Science GA 079WE UT WOS:000240207800027 ER PT J AU Benedict, DJ Parulekar, SJ Tsai, SP AF Benedict, Daniel J. Parulekar, Satish J. Tsai, Shih-Perng TI Pervaporation-assisted esterification of lactic and succinic acids with downstream ester recovery SO JOURNAL OF MEMBRANE SCIENCE LA English DT Article DE esterification with pervaporation; ester recovery; lactic and succinic acids; membrane stability and performance; reversible catalytic reaction ID ACETIC-ACID; KINETIC-MODEL; MEMBRANES; MIXTURES; WATER; SEPARATION; ETHANOL; EQUILIBRIUM; ACETYLATION; CHITOSAN AB Reactors coupled with membrane separation, such as pervaporation, can help enhance the conversion of reactants for thermodynamically or kinetically limited reactions via selective removal of one or more product species from the reaction mixture. Esterification of lactic acid (C3H6O3) and succinic acid (C4H6O4) with ethanol (C2H5OH) to generate ethyl lactate (C5H10O3) and diethyl succinate (C8H14O4), respectively, is studied in well-mixed reactors with solid catalysts (Amberlyst XN-1010 and Nation NR50) and two pervaporation membranes (GFIF-1005 and T1-b) in this article. The results of catalyst compatibility and membrane stability studies are discussed. Experiments with a closed-loop system of a "batch" catalytic reactor and a pervaporation unit employing GFIF-1005 reveal that for esterification of both lactic and succinic acids, fractional conversions of the two reactants exceeding the corresponding maximum values in a reaction-only operation and close to unity are obtained by stripping water, a reaction product. The kinetics of pervaporation is studied to obtain a working correlation for the flux of water in terms of temperature and water concentration on the feed side of the pervaporator. The efficacy of pervaporation-aided esterification is illustrated by attainment of near total utilization of the stoichiometrically limiting reactant within a reasonable time. Protocols for recovery of ethyl lactate and diethyl succinate from pervaporation retentate are discussed and simultaneous esterification of lactic and succinic acids, which is an attractive and novel concept, is proposed. (c) 2006 Elsevier B.V. All rights reserved. C1 IIT, Dept Environm Chem & Engn, Chicago, IL 60616 USA. Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA. RP Parulekar, SJ (reprint author), IIT, Dept Environm Chem & Engn, Chicago, IL 60616 USA. EM parulekar@iit.edu NR 32 TC 50 Z9 53 U1 6 U2 23 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0376-7388 J9 J MEMBRANE SCI JI J. Membr. Sci. PD SEP 15 PY 2006 VL 281 IS 1-2 BP 435 EP 445 DI 10.1016/j.memsci.2006.04.012 PG 11 WC Engineering, Chemical; Polymer Science SC Engineering; Polymer Science GA 079WE UT WOS:000240207800046 ER PT J AU Schiffer, WK Mirrione, MM Biegon, A Alexoff, DL Patel, V Dewey, SL AF Schiffer, Wynne K. Mirrione, Martine M. Biegon, Anat Alexoff, David L. Patel, Vinal Dewey, Stephen L. TI Serial microPET measures of the metabolic reaction to a microdialysis probe implant SO JOURNAL OF NEUROSCIENCE METHODS LA English DT Article DE chronic implant; microdialysis; glucose metabolism; small animal positron emission tomography (PET); rodent ID CEREBRAL GLUCOSE-UTILIZATION; POSITRON-EMISSION-TOMOGRAPHY; NUCLEUS-ACCUMBENS DOPAMINE; COCAINE-INDUCED INCREASES; SMALL ANIMAL PET; RAT-BRAIN; IN-VIVO; ENERGY-METABOLISM; FREEZING LESION; DYNAMIC CHANGES AB Despite the widespread use of chronic brain implants in experimental and clinical settings, the effects of these long-term procedures on brain metabolism and receptor expression remain largely unknown. Under the hypothesis that intracerebral microdialysis transiently alters tissue metabolism, we performed a series of (18)FDG microPET scans prior to and following surgical implantation of microdialysis cannulae. Parallel microPET measures using the competitive dopamine (DA) D-2 receptor antagonist, C-11-raclopride, provided an assay of DA stability in these same animals. 18FDG scans were performed prior to microdialysis cannulation and again at 2, 12, 24, 48, 120, 168, 360 and 500 h (0.2, 0.5, 1, 2, 5, 7, 15 and 25 days). Separate animals received a sham surgery and the control group had no surgical intervention. For the first 24 h (scans at 2, 12 and 24 h post-surgery) uptake was reduced in both hemispheres. However, by 48 h, contralateral uptake had returned to pre-surgical levels. The striking finding was that from 48 to 500h, the microdialysis cannulation produced widespread ipsilateral reductions in 18FDG uptake that encompassed the entire hemisphere. Despite the extent and persistence of these reductions, C-11-raclopride binding and ECF DA concentrations remained stable. (c) 2006 Elsevier B.V. All rights reserved. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. SUNY Stony Brook, Dept Neurobiol & Behav, Grad Program Neurosci, Stony Brook, NY 11794 USA. SUNY Stony Brook, Dept Mol Pharmacol, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. RP Schiffer, WK (reprint author), Brookhaven Natl Lab, Dept Chem, Bldg 555, Upton, NY 11973 USA. EM wynne@bnl.gov FU NIDA NIH HHS [F31-DA15874] NR 54 TC 55 Z9 55 U1 3 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0270 J9 J NEUROSCI METH JI J. Neurosci. Methods PD SEP 15 PY 2006 VL 155 IS 2 BP 272 EP 284 DI 10.1016/j.jneumeth.2006.01.027 PG 13 WC Biochemical Research Methods; Neurosciences SC Biochemistry & Molecular Biology; Neurosciences & Neurology GA 094CP UT WOS:000241217200014 PM 16519945 ER PT J AU Mansur, LK Haines, JR AF Mansur, L. K. Haines, J. R. TI Status of the Spallation Neutron Source with focus on target materials SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 7th International Workshop on Spallation Materials Technology (IWSMT-7) CY MAY 29-JUN 03, 2005 CL Thun, SWITZERLAND ID RESEARCH-AND-DEVELOPMENT; SOURCE MERCURY TARGET; CAVITATION EROSION; STAINLESS-STEEL; RADIATION-DAMAGE; LANSCE-WNR; SNS; IRRADIATION; POWER; TESTS AB An overview of the design and construction of the Spallation Neutron Source (SNS) is presented. Key facility performance parameters are summarized and plans for initial operation are described. Early efforts produced a conceptual design in 1997; the project itself was initiated in 1999, with the official groundbreaking taking place in December of 1999. As of April 2005 building construction was complete and the overall project was more than 90% complete. The design of the target and surrounds are finished and the first target was installed in June 2005. First beam on target is expected in June, 2006. The engineering design of the target region is described. The key systems comprise the mercury target, moderator and reflector assemblies, remote handling systems, utilities and shielding. Through interactions with the 1 GeV proton beam, the target, moderators and reflectors produce short pulse neutrons in thermal energy ranges, which are transported to a variety of neutron scattering instruments. The mercury target module itself is described in more detail. Materials issues are expected to govern the overall lifetime and have influenced the design, fabrication and planned operation. A wide range of materials research and development has been carried out to provide experimental data and analyses to ensure the satisfactory performance of the target and to set initial design conditions. Materials R&D concentrated mainly on cavitation erosion, radiation effects, and mercury compatibility issues, including investigations of the mechanical properties during exposure to mercury. Questions that would require future materials research are discussed. Published by Elsevier B.V. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Mansur, LK (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM mansurlk@ornl.gov NR 35 TC 13 Z9 13 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 15 PY 2006 VL 356 IS 1-3 BP 1 EP 15 DI 10.1016/j.jnucmat.2006.05.031 PG 15 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200002 ER PT J AU Dai, Y Mansur, LK Maloy, SA Kikuchi, K Kawai, M AF Dai, Yong Mansur, Louis K. Maloy, Stuart A. Kikuchi, Kenji Kawai, Masayoshi TI Proceedings of the Seventh International Workshop on Spallation Materials Technology (IWSMT-7) - Thun, Switzerland - 29 May 3 June 2005 - Preface SO JOURNAL OF NUCLEAR MATERIALS LA English DT Editorial Material C1 Paul Scherrer Inst, Villigen, Switzerland. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Dai, Y (reprint author), Paul Scherrer Inst, Villigen, Switzerland. RI Kikuchi, Kenji/A-3714-2010; Maloy, Stuart/A-8672-2009 OI Maloy, Stuart/0000-0001-8037-1319 NR 6 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 15 PY 2006 VL 356 IS 1-3 BP IX EP X DI 10.1016/j.jnucmat.2006.05.001 PG 2 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200001 ER PT J AU Maloy, SA Romero, T James, MR Dai, Y AF Maloy, Stuart A. Romero, T. James, M. R. Dai, Y. TI Tensile testing of EP-823 and HT-9 after irradiation in STIP II SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 7th International Workshop on Spallation Materials Technology (IWSMT-7) CY MAY 29-JUN 03, 2005 CL Thun, SWITZERLAND ID PRECIPITATION BEHAVIOR; NEUTRON-IRRADIATION; STEELS; TOUGHNESS AB The predicted operating conditions for a lead-bismuth eutectic target to be used in an accelerator driven system for the Advanced Fuel Cycle Initiative spans a temperature range of 300-600 degrees C while being irradiated by a high energy (similar to 600 MeV) proton beam. Such spallation conditions lead to high displacement rates coupled with high accumulation rates of helium and hydrogen up to 150 appm/dpa. Two candidate ferritic/martensitic materials for these applications include HT-9 and EP-823. To investigate the effect of irradiation on these materials, the tensile properties were measured at 25, 250, and 400 degrees C after irradiation in the STIP II irradiation to doses up to 20 dpa at temperatures up to 350 degrees C. Losses in ductility concomitant with increases in yield stress are observed in both alloys although the embrittlement is more severe in the EP-823. This stronger embrittlement is attributed to the high silicon content in EP-823. Published by Elsevier B.V. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Paul Scherrer Inst, Spallat Neutron Source Div, CH-52 Villigen, Switzerland. RP Maloy, SA (reprint author), Los Alamos Natl Lab, MST-8,MS H816, Los Alamos, NM 87545 USA. EM maloy@lanl.gov RI Maloy, Stuart/A-8672-2009 OI Maloy, Stuart/0000-0001-8037-1319 NR 14 TC 16 Z9 16 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 SEP 15 PY 2006 VL 356 IS 1-3 BP 56 EP 61 DI 10.1016/j.jnucmat.2006.05.003 PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200006 ER PT J AU Maloy, SA Toloczko, MB McClellan, KJ Romero, T Kohno, Y Garner, FA Kurtz, RJ Kimura, A AF Maloy, Stuart A. Toloczko, M. B. McClellan, K. J. Romero, T. Kohno, Y. Garner, F. A. Kurtz, R. J. Kimura, A. TI The effects of fast reactor irradiation conditions on the tensile properties of two ferritic/martensitic steels SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 7th International Workshop on Spallation Materials Technology (IWSMT-7) CY MAY 29-JUN 03, 2005 CL Thun, SWITZERLAND ID MECHANICAL-PROPERTIES; NEUTRON-IRRADIATION; STAINLESS-STEELS; FERRITIC STEELS; PRECIPITATION BEHAVIOR; MARTENSITIC STEELS; JFMS STEEL; MICROSTRUCTURE; TOUGHNESS; DPA AB Tensile testing has been performed at 25 and at similar to 400 degrees C on two ferritic/martensitic steels (JFMS and HT-9) after irradiation in FFTF to up to similar to 70 dpa at 373-433 degrees C. As observed in previous studies, this range of irradiation temperatures has a significant effect on hardening. The percent increase in yield stress decreases with increasing irradiation temperature from 373 to 433 degrees C. The JFMS alloy, which has 0.7 wt% silicon, exhibits approximately a factor of two increase in yield strength between tests at 427 and at 373 degrees C, and shows an increase in hardening with increasing dose. A comparison of the JFMS tensile properties to the properties of other ferritic/martensitic steels suggests that this hardening is due to precipitation of a Si-rich laves phase in this alloy. The HT-9 alloy, which contains more chromium and more carbon but less silicon (0.2 wt%), less molybdenum and less nickel, hardens during irradiation at 373 degrees C, but shows less hardening for irradiations performed at 427 degrees C and no increase in yield stress with increasing dose beyond 10 dpa. Published by Elsevier B.V. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Maloy, SA (reprint author), Los Alamos Natl Lab, MS H816,MST-8, Los Alamos, NM 87545 USA. EM maloy@lanl.gov RI Maloy, Stuart/A-8672-2009 OI Maloy, Stuart/0000-0001-8037-1319 NR 30 TC 19 Z9 19 U1 2 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 15 PY 2006 VL 356 IS 1-3 BP 62 EP 69 DI 10.1016/j.jnucmat.2006.05.024 PG 8 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200007 ER PT J AU Wu, XL Pan, X Mabon, JC Li, MM Stubbins, JF AF Wu, Xianglin Pan, Xiao Mabon, James C. Li, Meimei Stubbins, James F. TI The role of deformation mechanisms in flow localization of 316L stainless steel SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 7th International Workshop on Spallation Materials Technology (IWSMT-7) CY MAY 29-JUN 03, 2005 CL Thun, SWITZERLAND ID STACKING-FAULT ENERGY; MODELING TENSILE RESPONSE; TEMPERATURE-DEPENDENCE; IRRADIATION; ALLOYS; METALS AB Type 316 SS is widely used as a structural material in a variety of current accelerator driven systems and designs as well as in a number of current and advanced fission and fusion reactor concepts. The material is found to be very sensitive to irradiation damage in the temperature range of 150-400 degrees C, where low levels of irradiation exposure, as little as 0.1 dpa, can substantially reduce the uniform elongation in tensile tests. This process, where the plastic flow becomes highly localized resulting in very low overall ductility, is referred to as flow localization. The process controlling this restriction of flow is related to the difference between the yield and ultimate strengths such that dramatic irradiation-induced increases in the yield strength results in very limited plastic flow until necking. In this study, the temperature dependence of this process is examined in light of the operating deformation mechanisms. It is found that twinning is an important deformation mechanism at lower temperatures but is not available in the temperature range of concern since the stress to activate twinning becomes excessively high. This limits the deformation and leads to the flow localization process. (c) 2006 Published by Elsevier B.V. C1 Univ Illinois, Dept Nucl Plasma & Radiol Engn, Urbana, IL 61801 USA. Univ Illinois, Frederick Seitz Mat Lab, Urbana, IL 61801 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Stubbins, JF (reprint author), Univ Illinois, Dept Nucl Plasma & Radiol Engn, Urbana, IL 61801 USA. EM jstubbin@uiuc.edu NR 11 TC 24 Z9 24 U1 5 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 15 PY 2006 VL 356 IS 1-3 BP 70 EP 77 DI 10.1016/j.jnucmat.2006.05.047 PG 8 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200008 ER PT J AU Garner, FA Simonen, EP Oliver, BM Greenwood, LR Grossbeck, ML Wolfer, WG Scott, PM AF Garner, F. A. Simonen, E. P. Oliver, B. M. Greenwood, L. R. Grossbeck, M. L. Wolfer, W. G. Scott, P. M. TI Retention of hydrogen in fcc metals irradiated at temperatures leading to high densities of bubbles or voids SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 7th International Workshop on Spallation Materials Technology (IWSMT-7) CY MAY 29-JUN 03, 2005 CL Thun, SWITZERLAND ID MICROSTRUCTURAL DEVELOPMENT; NEUTRON-IRRADIATION; HELIUM; SPECTRA; GENERATION; EVOLUTION; FUSION; NICKEL; SYSTEM; HFIR AB Large amounts of hydrogen and helium are generated in structural metals in accelerator-driven systems. It is shown that under certain conditions, hydrogen can be stored in irradiated nickel and stainless steels at levels strongly in excess of that predicted by Sieverts' law. These conditions are first, the availability of hydrogen from various radiolytic and environmental sources and second, the formation of radiation-induced cavities to store hydrogen. These cavities can be highly pressurized bubbles or under-pressurized voids, with concurrent helium in the cavities at either low or very high levels. Transmutant sources of hydrogen are often insufficient to pressurize these cavities, and therefore environmental sources are required. The stored hydrogen appears to be stable for many years at room temperature. A conceptual model to describe such behavior requires the continuous generation of hydrogen from (n,p) reactions and possibly other radiolytic sources which can create a supersaturation of hydrogen in the metal, leading to the pressurization of voids and helium bubbles. Once captured in a bubble, the hydrogen is assumed to be in molecular form. Dissolution back into the metal requires chemisorption and dissociation on the bubble surface. Both of these processes have large activation barriers, particularly when oxygen, carbon, and other impurities poison the bubble surface. However, these chemisorbed poisons may reduce but not entirely restrict the ingress or egress of atomic hydrogen. Published by Elsevier B.V. C1 Pacific NW Natl Lab, Mat Resources Dept, Richland, WA 99354 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Framatome France, F-92084 Paris, France. RP Garner, FA (reprint author), Pacific NW Natl Lab, Mat Resources Dept, 902 Battelle Blvd,MSIN P8-15, Richland, WA 99354 USA. EM frank.garner@pnl.gov RI Greenwood, Lawrence/H-9539-2016 OI Greenwood, Lawrence/0000-0001-6563-0650 NR 33 TC 32 Z9 32 U1 1 U2 15 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 15 PY 2006 VL 356 IS 1-3 BP 122 EP 135 DI 10.1016/j.jnucmat.2006.05.023 PG 14 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200015 ER PT J AU Tolstolutskaya, GD Ruzhytskiy, VV Kopanets, IE Karpov, SA Bryk, VV Voyevodin, VN Garner, FA AF Tolstolutskaya, G. D. Ruzhytskiy, V. V. Kopanets, I. E. Karpov, S. A. Bryk, V. V. Voyevodin, V. N. Garner, F. A. TI Displacement and helium-induced enhancement of hydrogen and deuterium retention in ion-irradiated 18Cr10NiTi stainless steel SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 7th International Workshop on Spallation Materials Technology (IWSMT-7) CY MAY 29-JUN 03, 2005 CL Thun, SWITZERLAND ID ALLOYS; BEAM; GENERATION; EVOLUTION; NI AB There is strong interest in the accelerator-driven transmutation technology community on the synergistic effects of displacement damage and co-generated helium and hydrogen on property changes such as void swelling, irradiation creep, hardening, and possibly on corrosion and cracking. Substituting deuterium for protium offers advantages in experimental studies of the helium-hydrogen-damage synergisms. The influence of preimplanted helium and self-ion induced damage on deuterium trapping in 18Cr10NiTi stainless steel was studied using thermal desorption spectrometry, the nuclear reactions (3)He(D,p)(4)He and D((3)He, P)(4) He, and transmission electron microcopy. Reemission, retention and evolution of depth distribution profiles of deuterium in 18Cr10NiTi SS were studied for 10 keV D(2)(+) and 10 keV He(+) implantation at room temperature followed by annealing at 300-1500 K. The amounts of trapped and released deuterium and helium atoms were measured as a function of implantation dose at various temperatures. It was found that retention of hydrogen and deuterium is strongly enhanced by the presence of large amounts of helium and also strongly enhanced by damage introduced by 2 MeV Cr(3+) ions. These results are consistent with recent observations of hydrogen storage in stainless steels after irradiation in LANSCE with high energy protons and neutrons and also after irradiation in light water reactors. Published by Elsevier B.V. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. NSC Kharkov Inst Phys & Technol, Kharkov, Ukraine. RP Garner, FA (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd,MSIN P8-15,Box 99, Richland, WA 99354 USA. EM frank.garner@pnl.gov NR 23 TC 19 Z9 19 U1 2 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 15 PY 2006 VL 356 IS 1-3 BP 136 EP 147 DI 10.1016/j.jnucmat.2006.05.022 PG 12 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200016 ER PT J AU Oliver, BM Dai, Y Causey, RA AF Oliver, B. M. Dai, Y. Causey, R. A. TI Helium and hydrogen release measurements on various alloys irradiated in SINQ SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 7th International Workshop on Spallation Materials Technology (IWSMT-7) CY MAY 29-JUN 03, 2005 CL Thun, SWITZERLAND ID STAINLESS-STEELS AB Three irradiations have been performed in the Swiss Spallation Neutron Source (SINQ) to establish a materials database for mixed proton and neutron fluxes for future spallation neutron and other accelerator sources. Samples of 316LN, F82H, AlMg3, and Zircaloy-2 from STIP-II have been analyzed for their total helium and hydrogen contents and their release characteristics with temperature. Helium and hydrogen release measurements showed considerable levels of deuterium and tritium species which generally mirrored those of hydrogen. Hydrogen release occurred from about 300 degrees C for the AlMg3 to about 800 degrees C for the Zircaloy-2. For the Zircaloy-2 and the steels, helium release began to occur at between 1100 and 1200 degrees C, which is consistent with previous measurements on irradiated steels. Modeling of the hydrogen release data for the 316 and F82H suggests two traps of differing energy dependent on the irradiation dose and temperature. The higher energy traps are probably voids created from vacancy coalescence. (c) 2006 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Paul Scherrer Inst, CH-5232 Villigen, Switzerland. Sandia Natl Labs, Livermore, CA 94550 USA. RP Oliver, BM (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM brian.oliver@pnl.gov NR 9 TC 13 Z9 13 U1 1 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 SEP 15 PY 2006 VL 356 IS 1-3 BP 148 EP 156 DI 10.1016/j.jnucmat.2006.05.025 PG 9 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200017 ER PT J AU Farrell, K Byun, TS AF Farrell, K. Byun, T. S. TI Structural stability and hardness of carburized surfaces of 316 stainless steel after welding and after neutron irradiation SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article; Proceedings Paper CT 7th International Workshop on Spallation Materials Technology (IWSMT-7) CY MAY 29-JUN 03, 2005 CL Thun, SWITZERLAND ID SNS AB Surface hardening treatments offer promise of mitigating the threat of liquid cavitation pitting erosion at the interior surfaces of the austenitic 316 stainless steel vessel that will hold the liquid mercury target of the Spallation Neutron Source. One treatment is a commercial carburization process in which carbon is impregnated at low temperature at concentrations up to 6 wt% in supersaturated solid solution to depths of about 33 mu m. The surface hardness of 316L steel is raised from 150 to 200HV(0.05) (micro-Vickers hardness number at a 50 g load) to 1000-1200HV(0.05). It is shown that during subsequent electron beam welding the supersaturated carburized layer in the heat affected zone decomposes to a tiered microstructure of carbide phases in austenite. The hardness of this complex decomposition microstructure is in the range 530-1200HV(0.05), depending on the exposure temperature, the local carbon level, and the size of the carbide particles. To test whether the carburized solid solution layer would break down under atomic displacements from proton and neutron irradiation in service, specimens of annealed and 20% cold-rolled 316LN steel were neutron irradiated to 1 dpa at 60-100 degrees C. No softening of the layer was detected. Rather, the hardness of the layers was increased by 2-12%, compared to increases of 81% and 43% for the annealed and 20% cold rolled substrate materials, respectively. Optical microscopy examinations of the surfaces of the as-carburized-and-irradiated specimens revealed no sign of decomposition attributable to irradiation. Published by Elsevier B.V. C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Farrell, K (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008,MS-6151, Oak Ridge, TN 37831 USA. EM p-k-f@comcast.net NR 12 TC 3 Z9 3 U1 0 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 15 PY 2006 VL 356 IS 1-3 BP 178 EP 188 DI 10.1016/j.jnucmat.2006.05.027 PG 11 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200021 ER PT J AU Dai, Y Mansur, LK Maloy, SA AF Dai, Y. Mansur, L. K. Maloy, S. A. TI Summary of the 7th International Workshop on Spallation Materials Technology (IWSMT-7) SO JOURNAL OF NUCLEAR MATERIALS LA English DT Editorial Material C1 Paul Scherrer Inst, CH-5232 Villigen, Switzerland. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Dai, Y (reprint author), Paul Scherrer Inst, CH-5232 Villigen, Switzerland. EM yong.dai@psi.ch RI Maloy, Stuart/A-8672-2009 OI Maloy, Stuart/0000-0001-8037-1319 NR 0 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD SEP 15 PY 2006 VL 356 IS 1-3 BP 325 EP 330 DI 10.1016/j.jnucmat.2006.05.013 PG 6 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA 087QW UT WOS:000240758200038 ER PT J AU Welch, PM Rasmussen, KO Chitanvis, SM Lookman, T Sewell, TD AF Welch, P. M. Rasmussen, K. O. Chitanvis, S. M. Lookman, T. Sewell, T. D. TI Modeling non-equilibrium morphologies in specific polymeric materials SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS LA English DT Article DE blends; dynamics; Ginzburg-Landau; morphology; phase separation ID DIFFERENT SEQUENCE STATISTICS; LINEAR RANDOM COPOLYMERS; SPINODAL DECOMPOSITION; PHASE-SEPARATION; BLOCK-COPOLYMER; DIBLOCK COPOLYMER; ORDER-ORDER; BICONTINUOUS STRUCTURE; STRUCTURE EVOLUTION; OPTICAL MICROSCOPY AB We provide a numerical scheme for determining the Ginzburg-Landau free energy density directly from analysis of real or simulated images of phase evolving polymers. Our technique is robust and rapidly converges without requiring that the system reach equilibrium. The coefficients for the functional thus obtained agree with well-known mean-field trends. To our knowledge, this is the first prescription for specifying both the magnitudes and temperature dependencies for all of the free energy coefficients from microscopic models. (c) 2006 Wiley Periodicals, Inc. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Welch, PM (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. EM pwelch@lanl.gov RI Rasmussen, Kim/B-5464-2009; OI Rasmussen, Kim/0000-0002-4029-4723; Welch, Paul/0000-0001-5614-2065; Lookman, Turab/0000-0001-8122-5671 NR 61 TC 0 Z9 0 U1 0 U2 7 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0887-6266 EI 1099-0488 J9 J POLYM SCI POL PHYS JI J. Polym. Sci. Pt. B-Polym. Phys. PD SEP 15 PY 2006 VL 44 IS 18 BP 2605 EP 2611 DI 10.1002/polb.20895 PG 7 WC Polymer Science SC Polymer Science GA 081EN UT WOS:000240300100009 ER PT J AU Chitanvis, SM AF Chitanvis, Shirish M. TI Can low-power electromagnetic radiation disrupt hydrogen bonds in dsDNA? SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS LA English DT Article DE bioengineering; biopolymers; dissipation; microwaves; modeling ID MAGNETIC-FIELDS; CHILDHOOD LEUKEMIA; POOLED ANALYSIS; DNA AB Microwave radiation resonant with the natural phonon frequencies of double-stranded DNA (dsDNA) is shown to couple strongly to the breather modes of dsDNA under certain conditions. The excitation of the disruptive breather modes is controlled to a great extent by energy dissipation to its aqueous environment. For sufficiently high power-much higher than expected under ambient conditions-the breather solutions become unstable. Our analysis discounts the disruptive effect of low frequency, low power radiation on dsDNA. The authors hope to stimulate experiments via their analysis. The resulting data will dictate the future evolution of their models. (c) 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 2740-2747, 2006 C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Chitanvis, SM (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. EM shirish@lanl.gov NR 13 TC 13 Z9 13 U1 2 U2 8 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0887-6266 J9 J POLYM SCI POL PHYS JI J. Polym. Sci. Pt. B-Polym. Phys. PD SEP 15 PY 2006 VL 44 IS 18 BP 2740 EP 2747 DI 10.1002/polb.20910 PG 8 WC Polymer Science SC Polymer Science GA 081EN UT WOS:000240300100018 ER PT J AU Tepley, FJ Lundstrom, CC Gill, JB Williams, RW AF Tepley, Frank J., III Lundstrom, Craig C. Gill, James B. Williams, Ross W. TI U-Th-Ra disequilibria and the time scale of fluid transfer and andesite differentiation at Arenal volcano, Costa Rica (1968-2003) SO JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH LA English DT Article; Proceedings Paper CT Fall Meeting of the American-Geophysical-Union CY DEC 13-17, 2004 CL San Francisco, CA SP Amer Geophys Union DE Arenal volcano; crystal model ages; differentiation time scale; fluid transfer U-Th-Ra disequilibria ID CENTRAL-AMERICAN ARC; MAGMA FORMATION; SERIES SYSTEMATICS; BASALTIC ANDESITES; ISLAND ARCS; MANTLE; LAVAS; MELT; BENEATH; ROCKS AB To evaluate the time scale of fluid transfer and andesite differentiation at Arenal volcano in Costa Rica, we have measured trace-element concentrations and U-series disequilibria in whole rocks and mineral separates (pyroxene, plagioclase, magnetite) from lavas of the current eruption (1968 to 2003) by HR-ICP-MS, TIMS and PIMMS techniques. Whole rock and mineral separate analyses show a small but measurable variation in (Th-230)/(Th-232) (1.10 to 1.18). In contrast, (Th-230)/(U-238) range from 0.91 to 1.04 reflecting the moderate spread in Th/U. Stage 1 (1968-1971) whole rocks and mineral separates have both higher (Th-230)/(Th-232) and (U-238)/(Th-232) than to younger stage 2 lavas (1971 to present), which have lower, nearly constant (Th-230)/(Th-232) and lower, slightly variable (U-238)/(Th-232). Ra-226 excesses exist in both whole rocks and mineral separates with (Ra-226)/(Th-230) ranging between 0.94 and 4.8. Whole rock (Ra-226)/(Th-230) are largest early in the eruption and decrease in the later lavas, which are influenced by newer recharge material. U-238-Th-230 whole rock and mineral data produce an inclined array on an equiline diagram, which we interpret to represent progressive melting of a variably fluxed mantle wedge and a Nicaraguan sediment component, and subsequent mixing. U-238-Th-230 internal isochrons suggest that minerals grew instantaneously with respect to the half-life of Th-230. Whole rock and mineral separate (Ra-226)/(Th-230) data indicate that melts were produced, transported, differentiated and erupted in < 8 kyr. Mineral (Ra-226)/Ba-(Th-230)/Ba model ages are calculated and corrected for melt inclusions and glass adherents in the mineral fractions, and for the differential partitioning of Ra and Ba. Plagioclase model ages and U-238-Th-230 isochron ages suggest that plagioclase could be as young as a few years or as old as several centuries upon eruption. (c) 2006 Elsevier B.V. All rights reserved. C1 Oregon State Univ, Coll Ocean & Atmospher Sci, Corvallis, OR 97331 USA. Univ Illinois, Dept Geol, Urbana, IL 61801 USA. Univ Calif Santa Cruz, Dept Earth Sci, Santa Cruz, CA 95064 USA. Lawrence Livermore Natl Lab, Chem Biol & Nucl Sci Div, Livermore, CA 94551 USA. RP Tepley, FJ (reprint author), Oregon State Univ, Coll Ocean & Atmospher Sci, Corvallis, OR 97331 USA. EM ftepley@coas.oregonstate.edu; lundstro@uiuc.edu; jgill@es.ucsc.edu; williams141@llnl.gov NR 51 TC 19 Z9 20 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0273 EI 1872-6097 J9 J VOLCANOL GEOTH RES JI J. Volcanol. Geotherm. Res. PD SEP 15 PY 2006 VL 157 IS 1-3 SI SI BP 147 EP 165 DI 10.1016/j.jvolgeores.2006.03.038 PG 19 WC Geosciences, Multidisciplinary SC Geology GA 088DD UT WOS:000240790800010 ER PT J AU Jankowski, A Hayes, J Smith, R Reed, B Kumar, M Colvin, J AF Jankowski, Alan Hayes, Jeff Smith, Ray Reed, Bryan Kumar, Mukul Colvin, Jeff TI Grain growth in bismuth coatings SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE coatings; diffusion; grain growth; physical vapor deposition ID PHYSICAL VAPOR-DEPOSITION; MICROSTRUCTURE; TEMPERATURE; TITANIUM AB The values for activation energy and diffusion coefficient are needed for a predictive processing of grain size in bismuth coatings. A method is adopted wherein the grain size is measured for isothermally deposited coatings. The measured exponent for grain growth with time indicates that ideal grain growth behavior is followed over the temperature range of deposition. The activation energy for grain growth in bismuth is determined as 0.47 eV atom(-1) with a diffusion coefficient of 3.3 x 10(-4) cm(2) s(-1). (c) 2006 Elsevier B.V. All rights reserved. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Jankowski, A (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM jankowski1@llnl.gov NR 16 TC 4 Z9 4 U1 1 U2 2 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD SEP 15 PY 2006 VL 431 IS 1-2 BP 106 EP 108 DI 10.1016/j.msea.2006.05.156 PG 3 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 077NT UT WOS:000240037200012 ER PT J AU Fan, C Qiao, DC Wilson, TW Choo, H Liaw, PK AF Fan, Cang Qiao, Dongchun Wilson, T. W. Choo, Hahn Liaw, Peter K. TI As-cast Zr-Ni-Cu-Al-Nb bulk metallic glasses containing nanocrystalline particles with ductility SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE bulk metallic glasses; amorphous alloys; amorphous composites; nanocrystalline/amorphous composites ID AMORPHOUS-ALLOYS; FATIGUE BEHAVIOR; MECHANICAL-PROPERTIES; CRYSTALLIZATION; COMPOSITES; COMPOUND; STRENGTH; TA AB Bulk metallic glasses (BMGs) exhibit inhomogeneous deformation under loading at room temperature due to the formation of highly localized shear bands, which leads to a catastrophic failure. We present recent advances in the processing technique, and in the further understanding of the relationship between the microstructure and mechanical behavior of Zr-based BMG composites (BMGCs). By adding Nb to Zr-Ni-Cu-Al, nanocrystalline-particle-containing BMGCs were synthesized in an as-cast condition without subsequent heat treatments. High-resolution transmission electron microscopy results show that the addition of 2 atomic percent (at.%) Nb introduces nanocrystals with an average size in the range of 1-3 nm. Differential-scanning calorimetry and differential-thermal analyses indicate that the glass-forming ability increased after adding Nb. The compressive plasticity of the Nb-containing BMGC at room temperature is significantly improved (about 3%), when compared to the monolithic BMGs (about 0.1-0.3%) with an increase in the compressive strength from 1820 to 1860 MPa. (c) 2006 Elsevier B.V. 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. RP Fan, C (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. EM cfan@utk.edu RI Choo, Hahn/A-5494-2009 OI Choo, Hahn/0000-0002-8006-8907 NR 35 TC 22 Z9 22 U1 1 U2 7 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 EI 1873-4936 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD SEP 15 PY 2006 VL 431 IS 1-2 BP 158 EP 165 DI 10.1016/j.msea.2006.05.129 PG 8 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 077NT UT WOS:000240037200020 ER PT J AU Li, SY Beyerlein, IJ Alexander, DJ AF Li, Saiyi Beyerlein, Irene J. Alexander, David J. TI Characterization of deformation textures in pure copper processed by equal channel angular extrusion via route A SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE equal channel angular extrusion; simple shear; torsion; deformation texture; copper ID INITIAL TEXTURE; PLASTIC-DEFORMATION; MODELING TEXTURE; BCC MATERIALS; SIMPLE SHEAR; EVOLUTION; MICROSTRUCTURE; ALUMINUM; ECAP; METALS AB Texture evolution in pure copper processed by equal channel angular extrusion (ECAE) for up to eight passes via route A is investigated. The experimental textures develop very closely along ideal orientations and fibers derived from those for simple shear torsion by a rotation about the flow plane normal, and show a continuous strengthening of the B(theta)/(B) over bar (theta) components with increasing pass number. Such tendencies are satisfactorily predicted by polycrystal plasticity models. The polycrystal simulations also reveal that, despite significant changes of entry textures and strain path in multiple passes, the deformation in each pass is large enough to re-orient grains to the ideal fibers such that shear-type ECAE textures can be re-established. It is suggested that the rotation of the local (or simple shear) reference system from the laboratory (or ECAE) reference system needs to be taken into account in ECAE texture analyses. (c) 2006 Elsevier B.V. All rights reserved. C1 S China Univ Technol, Coll Mech Engn, Guangzhou 510640, Peoples R China. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Li, SY (reprint author), S China Univ Technol, Coll Mech Engn, Guangzhou 510640, Peoples R China. EM saiyi@scut.edu.cn RI Li, Saiyi/J-3968-2012; Beyerlein, Irene/A-4676-2011 NR 30 TC 23 Z9 24 U1 0 U2 4 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD SEP 15 PY 2006 VL 431 IS 1-2 BP 339 EP 345 DI 10.1016/j.msea.2006.06.022 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 077NT UT WOS:000240037200044 ER PT J AU Blednykh, A AF Blednykh, Alexei TI Trapped modes in tapered vacuum chambers for a mini-gap undulator magnet SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE tapered vacuum chambers; wakefields; impedance; trapped modes; cut-off frequency; kick factor AB Consideration of transverse wakefields and impedances due to the tapered vacuum chambers for superconducting mini-gap undulators revealed the existence of trapped modes. To investigate this phenomenon, a series of analytical and numerical calculations were performed for both elliptical and rectangular chambers. A rectangular prototype was built and measured and the experimental results were found to be in very good agreement with theory. Knowledge about the impedance of tapered vacuum chambers is important for the evaluation of transverse instabilities in high-energy accelerators. (c) 2006 Elsevier B.V. All rights reserved. C1 Brookhaven Natl Lab, NSLS, Upton, NY 11973 USA. RP Blednykh, A (reprint author), Brookhaven Natl Lab, NSLS, Upton, NY 11973 USA. EM blednykh@bnl.gov NR 26 TC 1 Z9 1 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 SEP 15 PY 2006 VL 565 IS 2 BP 380 EP 393 DI 10.1016/j.nima.2006.06.027 PG 14 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 086ZY UT WOS:000240713100005 ER PT J AU Abazov, VM Abbott, B Abolins, M Acharya, BS Adams, DL Adams, M Adams, T Agelou, M Agram, JL Ahmed, SN Ahn, SH Ahsan, M Alexeev, GD Alkhazov, G Alton, A Alverson, G Alves, GA Anastasoaie, M Andeen, T Anderson, JT Anderson, S Andrieu, B Angstadt, R Anosov, V Arnoud, Y Arov, M Askew, A Asman, B Jesus, ACSA Atramentov, O Autermann, C Avila, C Babukhadia, L Bacon, TC Badaud, F Baden, A Baffioni, S Bagby, L Baldin, B Balm, PW Banerjee, P Banerjee, S Barberis, E Bardon, O Barg, W Bargassa, P Baringer, P Barnes, C Barreto, J Bartlett, JF Bassler, U Bhattacharjee, M Baturitsky, MA Bauer, D Bean, A Baumbaugh, B Beauceron, S Begalli, M Beaudette, F Begel, M Bellavance, A Beri, SB Bernardi, G Bernhard, R Bertram, I Besancon, M Besson, A Beuselinck, R Beutel, D Bezzubov, VA Bhat, PC Bhatnagar, V Binder, M Biscarat, C Bishoff, A Black, KM Blackler, I Blazey, G Blekman, F Blessing, S Bloch, D Blumenschein, U Bockenthien, E Bodyagin, V Boehnlein, A Boeriu, O Bolton, TA Bonamy, P Bonifas, D Borcherding, F Borissov, G Bos, K Bose, T Boswell, C Bowden, M Brandt, A Briskin, G Brock, R Brooijmans, G Bross, A Buchanan, NJ Buchholz, D Buehler, M Buescher, V Burdin, S Burke, S Burnett, TH Busato, E Buszello, CP Butler, D Butler, JM Cammin, J Caron, S Bystricky, J Canal, L Canelli, F Carvalho, W Casey, BCK Casey, D Cason, NM Castilla-Valdez, H Chakrabarti, S Chakraborty, D Chan, KM Chandra, A Chapin, D Charles, F Cheu, E Chevalier, L Chi, E Chiche, R Cho, DK Choate, R Choi, S Choudhary, B Chopra, S Christenson, JH Christiansen, T Christofek, L Churin, I Cisko, G Claes, D Clark, AR Clements, B Clement, C Coadou, Y Colling, DJ Coney, L Connolly, B Cooke, M Cooper, WE Coppage, D Corcoran, M Coss, J Cothenet, A Cousinou, MC Cox, B Crepe-Renaudin, S Cristetiu, M Cummings, MAC Cutts, D da Motta, H Das, M Davies, B Davies, G Davis, GA Davis, W De, K de Jong, P de Jong, SJ De la Cruz-Burelo, E De la Taille, C Martins, CDO Dean, S Degenhardt, JD Deliot, F Delsart, PA Signore, K DeMaat, R Demarteau, M Demina, R Demine, P Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Doets, M Doidge, M Dong, H Doulas, S Dudko, LV Duflot, L Dugad, SR Duperrin, A Dvornikov, O Dyer, J Dyshkant, A Eads, M Edmunds, D Edwards, T Ellison, J Elmsheuser, J Eltzroth, JT Elvira, VD Eno, S Ermolov, P Eroshin, OV Estrada, J Evans, D Evans, H Evdokimov, A Evdokimov, VN Fagan, J Fast, J Fatakia, SN Fein, D Feligioni, L Ferapontov, AV Ferbel, T Ferreira, MJ Fiedler, F Filthaut, F Fisher, W Fisk, HE Fleck, I Fitzpatrick, T Flattum, E Fleuret, F Flores, R Foglesong, J Fortner, M Fox, H Franklin, C Freeman, W Fu, S Fuess, S Gadfort, T Galea, CF Gallas, E Galyaev, E Gao, M Garcia, C Garcia-Bellido, A Gardner, J Gavrilov, V Gay, A Gay, P Gele, D Gelhaus, R Genser, K Gerber, CE Gershtein, Y Gillberg, D Geurkov, G Ginther, G Gobbi, B Goldmann, K Golling, T Gollub, N Golovtsov, V Gomez, B Gomez, G Gomez, R Goodwin, R Gornushkin, Y Gounder, K Goussiou, A Graham, D Graham, G Grannis, PD Gray, K Greder, S Green, DR Green, J Green, JA Greenlee, H Greenwood, ZD Gregores, EM Grinstein, S Gris, P Grivaz, JF Groer, L Grunendahl, S Grunewald, MW Gu, W Guglielmo, J Gupta, A Gurzhiev, SN Gutierrez, G Gutierrez, P Haas, A Hadley, NJ Haggard, E Haggerty, H Hagopian, S Hall, I Hall, RE Han, C Han, L Hance, R Hanagaki, K Hanlet, P Hansen, S Harder, K Harel, A Harrington, R Hauptman, JM Hauser, R Hays, C Hays, J Hazen, E Hebbeker, T Hebert, C Hedin, D Heinmiller, JM Heinson, AP Heintz, U Hensel, C Hesketh, G Hildreth, MD Hirosky, R Hobbs, JD Hoeneisen, B Hohlfeld, M Honga, SJ Hooper, R Hou, S Houben, P Hu, Y Huang, J Huang, Y Hynek, V Huffman, D Iashvili, I Illingworth, R Ito, AS Jabeen, S Jacquier, Y Jaffre, M Jain, S Jain, V Jakobs, K Jayanti, R Jenkins, A Jesik, R Jiang, Y Johns, K Johnson, M Johnson, P Jonckheere, A Johnsson, P Jostlein, H Jouravlev, N Juarez, M Juste, A Kaan, AP Kado, MM Kafer, D Kahl, W Kahn, S Kajfasz, E Kalinin, AM Kalk, J Kalmani, SD Karmanov, D Kasper, J Katsanos, I Kau, D Kaur, R Ke, Z Kehoe, R Kermiche, S Kesisoglou, S Khanov, A Kharchilava, A Kharzheev, YM Kim, H Kim, KH Kim, TJ Kirsch, N Klima, B Klute, M Kohli, JM Konrath, JP Komissarov, EV Kopal, M Korablev, VM Kostritski, A Kotcher, J Kothari, B Kotwal, AV Koubarovsky, A Kozelov, AV Kozminski, J Kryemadhi, A Kouznetsov, O Krane, J Kravchuk, N Krempetz, K Krider, J Krishnaswamy, MR Krzywdzinski, S Kubantsev, M Kubinski, R Kuchinsky, N Kuleshov, S Kulik, Y Kumar, A Kunori, S Kupco, A Kurca, T Kvita, J Kuznetsov, VE Kwarciany, R Lager, S Lahrichi, N Landsberg, G Larwill, M Laurens, P Lavigne, B Lazoflores, J Le Bihan, AC Le Meur, G Lebrun, P Lee, SW Lee, WM Leflat, A Leggett, C Lehner, F Leitner, R Leonidopoulos, C Leveque, J Lewis, P Li, J Li, QZ Li, X Lima, JGR Lincoln, D Lindenmeyer, C Linn, SL Linnemann, J Lipaev, VV Lipton, R Litmaath, M Lizarazo, J Lobo, L Lobodenko, A Lokajicek, M Lounis, A Love, P Lu, J Lubatti, HJ Lucotte, A Lueking, L Luo, C Lynker, M Lyon, AL Machado, E Maciel, AKA Madaras, RJ Mattig, P Magass, C Magerkurth, A Magnan, AM Maity, M Makovec, N Mal, PK Malbouisson, HB Malik, S Malyshev, VL Manakov, V Mao, HS Maravin, Y Markley, D Markus, M Marshall, T Martens, M Martin, M Martin-Chassard, G Mattingly, SEK Matulik, M Mayorov, AA McCarthy, R McCroskey, R McKenna, M McMahon, T Meder, D Melanson, HL Melnitchouk, A Mendes, A Mendoza, D Mendoza, L Meng, X Merekov, YP Merkin, M Merritt, KW Meyer, A Meyer, J Michaut, M Miao, C Miettinen, H Mihalcea, D Mikhailov, V Miller, D Mitrevski, J Mokhov, N Molina, J Mondal, NK Montgomery, HE Moore, RW Moulik, T Muanza, GS Mostafa, M Moua, S Mulders, M Mundim, L Mutaf, YD Nagaraj, P Nagy, E Naimuddin, M Nang, F Narain, M Narasimhan, VS Narayanan, A Naumann, NA Neal, HA Negret, JP Nelson, S Neuenschwander, RT Neustroev, P Noeding, C Nomerotski, A Novaes, SF Nozdrin, A Nunnemanny, T Nurczyk, A Nurse, E O'Dell, V O'Neil, DC Oguri, V Olis, D Oliveira, N Olivier, B Olsen, J Oshima, N Oshinowo, BO Garzon, GJOY Padley, P Papageorgiou, K Parashar, N Park, J Park, SK Parsons, J Partridge, R Parua, N Patwa, A Pawloski, G Perea, PM Perez, E Peters, O Petroff, P Petteni, M Phaf, L Piegaia, R Pleier, MA Podesta-Lerma, PLM Podstavkov, VM Pogorelov, Y Pol, ME Pompos, A Polosov, P Pope, BG Popkov, E Porokhovoy, S da Silva, WLP Pritchard, W Prokhorov, I Prosper, HB Protopopescu, S Przybycien, MB Qian, J Quadt, A Quinn, B Ramberg, E Ramirez-Gomez, R Rani, KJ Ranjan, K Rao, MVS Rapidis, PA Rapisarda, S Raskowski, J Ratoff, PN Ray, RE Reay, NW Rechenmacher, R Reddy, LV Regan, T Renardy, JF Reucroft, S Rha, J Ridel, M Rijssenbeek, M Ripp-Baudot, I Rizatdinova, F Robinson, S Rodrigues, RF Roco, M Rotolo, C Royon, C Rubinov, P Ruchti, R Rucinski, R Rud, VI Russakovich, N Russo, P Sabirov, B Sajot, G Sanchez-Hernandez, A Sanders, MP Santoro, A Satyanarayana, B Savage, G Sawyer, L Scanlon, T Schaile, D Schamberger, RD Scheglov, Y Schellman, H Schieferdecker, P Schmittz, C Schwanenberger, C Schukin, AA Schwartzman, A Schwienhorst, R Sengupta, S Severini, H Shabalina, E Shamim, M Shankar, HC Shary, V Shchukin, AA Sheahan, P Shephard, WD Shivpuri, RK Shishkin, AA Shpakov, D Shupe, M Sidwell, RA Simak, V Sirotenko, V Skow, D Skubic, P Slattery, P Smith, DE Smith, RP Smolek, K Snow, GR Snow, J Snyder, S Soldner-Rembold, S Song, X Song, Y Sonnenschein, L Sopczak, A Sorin, V Sosebee, M Soustruznik, K Souza, M Spartana, N Spurlock, B Stanton, NR Stark, J Steele, J Stefanik, A Steinberg, J Steinbruck, G Stevenson, K Stolin, V Stone, A Stoyanova, DA Strandberg, J Strang, MA Strauss, M Strohmery, R Strom, D Strovink, M Stutte, L Sumowidagdo, S Sznajder, A Talby, M Tentindo-Repond, S Tamburello, P Taylor, W Telford, P Temple, J Terentyev, N Teterin, V Thomas, E Thompson, J Thooris, B Titov, M Toback, D Tokmenin, VV Tolian, C Tomoto, M Tompkins, D Toole, T Torborg, J Touze, F Towers, S Trefzger, T Trincaz-Duvoid, S Trippe, TG Tsybychev, D Tuchming, B Tully, C Turcot, AS Tuts, PM Utes, M Uvarov, L Uvarov, S Uzunyan, S Vachon, B van den Berg, PJ van Gemmeren, P Van Kooten, R van Leeuwen, WM Varelas, N Varnes, EW Vartapetian, A Vasilyev, IA Vaupel, M Vaz, M Verdier, P Vertogradov, LS Verzocchi, M Vigneault, M Villeneuve-Seguier, F Vishwanath, PR Vlimant, JR Von Toerne, E Vorobyov, A Vreeswijk, M Anh, TV Vysotsky, V Wahl, HD Walker, R Wallace, N Wang, L Wang, ZM Warchol, J Warsinsky, M Watts, G Wayne, M Weber, M Weerts, H Wegner, M Wermes, N Wetstein, M White, A White, V Whiteson, D Wicke, D Wijnen, T Wijngaarden, DA Wilcer, N Willutzki, H Wilson, GW Wimpenny, SJ Wittlin, J Wlodek, T Wobisch, M Womersley, J Wood, DR Wyatt, TR Wu, Z Xie, Y Xu, Q Xuan, N Yacoob, S Yamada, R Yan, M Yarema, R Yasuda, T Yatsunenko, YA Yen, Y Yip, K Yoo, HD Yoffe, F Youn, SW Yu, J Yurkewicz, A Zabi, A Zanabria, M Zatserklyaniy, A Zdrazil, M Zeitnitz, C Zhang, B Zhang, D Zhang, X Zhao, T Zhao, Z Zheng, H Zhou, B Zhou, B Zhu, J Zielinski, M Zieminska, D Zieminski, A Zitoun, R Zmuda, T Zutshi, V Zviagintsev, S Zverev, EG Zylberstejn, A AF Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S. Adams, D. L. Adams, M. Adams, T. Agelou, M. Agram, J. -L. Ahmed, S. N. Ahn, S. H. Ahsan, M. Alexeev, G. D. Alkhazov, G. Alton, A. Alverson, G. Alves, G. A. Anastasoaie, M. Andeen, T. Anderson, J. T. Anderson, S. Andrieu, B. Angstadt, R. Anosov, V. Arnoud, Y. Arov, M. Askew, A. Asman, B. Assis Jesus, A. C. S. Atramentov, O. Autermann, C. Avila, C. Babukhadia, L. Bacon, T. C. Badaud, F. Baden, A. Baffioni, S. Bagby, L. Baldin, B. Balm, P. W. Banerjee, P. Banerjee, S. Barberis, E. Bardon, O. Barg, W. Bargassa, P. Baringer, P. Barnes, C. Barreto, J. Bartlett, J. F. Bassler, U. Bhattacharjee, M. Baturitsky, M. A. Bauer, D. Bean, A. Baumbaugh, B. Beauceron, S. Begalli, M. Beaudette, F. Begel, M. Bellavance, A. Beri, S. B. Bernardi, G. Bernhard, R. Bertram, I. Besancon, M. Besson, A. Beuselinck, R. Beutel, D. Bezzubov, V. A. Bhat, P. C. Bhatnagar, V. Binder, M. Biscarat, C. Bishoff, A. Black, K. M. Blackler, I. Blazey, G. Blekman, F. Blessing, S. Bloch, D. Blumenschein, U. Bockenthien, E. Bodyagin, V. Boehnlein, A. Boeriu, O. Bolton, T. A. Bonamy, P. Bonifas, D. Borcherding, F. Borissov, G. Bos, K. Bose, T. Boswell, C. Bowden, M. Brandt, A. Briskin, G. Brock, R. Brooijmans, G. Bross, A. Buchanan, N. J. Buchholz, D. Buehler, M. Buescher, V. Burdin, S. Burke, S. Burnett, T. H. Busato, E. Buszello, C. P. Butler, D. Butler, J. M. Cammin, J. Caron, S. Bystricky, J. Canal, L. Canelli, F. Carvalho, W. Casey, B. C. K. Casey, D. Cason, N. M. Castilla-Valdez, H. Chakrabarti, S. Chakraborty, D. Chan, K. M. Chandra, A. Chapin, D. Charles, F. Cheu, E. Chevalier, L. Chi, E. Chiche, R. Cho, D. K. Choate, R. Choi, S. Choudhary, B. Chopra, S. Christenson, J. H. Christiansen, T. Christofek, L. Churin, I. Cisko, G. Claes, D. Clark, A. R. Clements, B. Clement, C. Coadou, Y. Colling, D. J. Coney, L. Connolly, B. Cooke, M. Cooper, W. E. Coppage, D. Corcoran, M. Coss, J. Cothenet, A. Cousinou, M. -C. Cox, B. Crepe-Renaudin, S. Cristetiu, M. Cummings, M. A. C. Cutts, D. da Motta, H. Das, M. Davies, B. Davies, G. Davis, G. A. Davis, W. De, K. de Jong, P. de Jong, S. J. De La Cruz-Burelo, E. De La Taille, C. De Oliveira Martins, C. Dean, S. Degenhardt, J. D. Deliot, F. Delsart, P. A. Del Signore, K. DeMaat, R. Demarteau, M. Demina, R. Demine, P. Denisov, D. Denisov, S. P. Desai, S. Diehl, H. T. Diesburg, M. Doets, M. Doidge, M. Dong, H. Doulas, S. Dudko, L. V. Duflot, L. Dugad, S. R. Duperrin, A. Dvornikov, O. Dyer, J. Dyshkant, A. Eads, M. Edmunds, D. Edwards, T. Ellison, J. Elmsheuser, J. Eltzroth, J. T. Elvira, V. D. Eno, S. Ermolov, P. Eroshin, O. V. Estrada, J. Evans, D. Evans, H. Evdokimov, A. Evdokimov, V. N. Fagan, J. Fast, J. Fatakia, S. N. Fein, D. Feligioni, L. Ferapontov, A. V. Ferbel, T. Ferreira, M. J. Fiedler, F. Filthaut, F. Fisher, W. Fisk, H. E. Fleck, I. Fitzpatrick, T. Flattum, E. Fleuret, F. Flores, R. Foglesong, J. Fortner, M. Fox, H. Franklin, C. Freeman, W. Fu, S. Fuess, S. Gadfort, T. Galea, C. F. Gallas, E. Galyaev, E. Gao, M. Garcia, C. Garcia-Bellido, A. Gardner, J. Gavrilov, V. Gay, A. Gay, P. Gele, D. Gelhaus, R. Genser, K. Gerber, C. E. Gershtein, Y. Gillberg, D. Geurkov, G. Ginther, G. Gobbi, B. Goldmann, K. Golling, T. Gollub, N. Golovtsov, V. Gomez, B. Gomez, G. Gomez, R. Goodwin, R. Gornushkin, Y. Gounder, K. Goussiou, A. Graham, D. Graham, G. Grannis, P. D. Gray, K. Greder, S. Green, D. R. Green, J. Green, J. A. Greenlee, H. Greenwood, Z. D. Gregores, E. M. Grinstein, S. Gris, Ph. Grivaz, J. -F. Groer, L. Grunendahl, S. Grunewald, M. W. Gu, W. Guglielmo, J. Gupta, A. Gurzhiev, S. N. Gutierrez, G. Gutierrez, P. Haas, A. Hadley, N. J. Haggard, E. Haggerty, H. Hagopian, S. Hall, I. Hall, R. E. Han, C. Han, L. Hance, R. Hanagaki, K. Hanlet, P. Hansen, S. Harder, K. Harel, A. Harrington, R. Hauptman, J. M. Hauser, R. Hays, C. Hays, J. Hazen, E. Hebbeker, T. Hebert, C. Hedin, D. Heinmiller, J. M. Heinson, A. P. Heintz, U. Hensel, C. Hesketh, G. Hildreth, M. D. Hirosky, R. Hobbs, J. D. Hoeneisen, B. Hohlfeld, M. Honga, S. J. Hooper, R. Hou, S. Houben, P. Hu, Y. Huang, J. Huang, Y. Hynek, V. Huffman, D. Iashvili, I. Illingworth, R. Ito, A. S. Jabeen, S. Jacquier, Y. Jaffre, M. Jain, S. Jain, V. Jakobs, K. Jayanti, R. Jenkins, A. Jesik, R. Jiang, Y. Johns, K. Johnson, M. Johnson, P. Jonckheere, A. Johnsson, P. Jostlein, H. Jouravlev, N. Juarez, M. Juste, A. Kaan, A. P. Kado, M. M. Kaefer, D. Kahl, W. Kahn, S. Kajfasz, E. Kalinin, A. M. Kalk, J. Kalmani, S. D. Karmanov, D. Kasper, J. Katsanos, I. Kau, D. Kaur, R. Ke, Z. Kehoe, R. Kermiche, S. Kesisoglou, S. Khanov, A. Kharchilava, A. Kharzheev, Y. M. Kim, H. Kim, K. H. Kim, T. J. Kirsch, N. Klima, B. Klute, M. Kohli, J. M. Konrath, J. -P. Komissarov, E. V. Kopal, M. Korablev, V. M. Kostritski, A. Kotcher, J. Kothari, B. Kotwal, A. V. Koubarovsky, A. Kozelov, A. V. Kozminski, J. Kryemadhi, A. Kouznetsov, O. Krane, J. Kravchuk, N. Krempetz, K. Krider, J. Krishnaswamy, M. R. Krzywdzinski, S. Kubantsev, M. Kubinski, R. Kuchinsky, N. Kuleshov, S. Kulik, Y. Kumar, A. Kunori, S. Kupco, A. Kurca, T. Kvita, J. Kuznetsov, V. E. Kwarciany, R. Lager, S. Lahrichi, N. Landsberg, G. Larwill, M. Laurens, P. Lavigne, B. Lazoflores, J. Le Bihan, A. -C. Le Meur, G. Lebrun, P. Lee, S. W. Lee, W. M. Leflat, A. Leggett, C. Lehner, F. Leitner, R. Leonidopoulos, C. Leveque, J. Lewis, P. Li, J. Li, Q. Z. Li, X. Lima, J. G. R. Lincoln, D. Lindenmeyer, C. Linn, S. L. Linnemann, J. Lipaev, V. V. Lipton, R. Litmaath, M. Lizarazo, J. Lobo, L. Lobodenko, A. Lokajicek, M. Lounis, A. Love, P. Lu, J. Lubatti, H. J. Lucotte, A. Lueking, L. Luo, C. Lynker, M. Lyon, A. L. Machado, E. Maciel, A. K. A. Madaras, R. J. Maettig, P. Magass, C. Magerkurth, A. Magnan, A. -M. Maity, M. Makovec, N. Mal, P. K. Malbouisson, H. B. Malik, S. Malyshev, V. L. Manakov, V. Mao, H. S. Maravin, Y. Markley, D. Markus, M. Marshall, T. Martens, M. Martin, M. Martin-Chassard, G. Mattingly, S. E. K. Matulik, M. Mayorov, A. A. McCarthy, R. McCroskey, R. McKenna, M. McMahon, T. Meder, D. Melanson, H. L. Melnitchouk, A. Mendes, A. Mendoza, D. Mendoza, L. Meng, X. Merekov, Y. P. Merkin, M. Merritt, K. W. Meyer, A. Meyer, J. Michaut, M. Miao, C. Miettinen, H. Mihalcea, D. Mikhailov, V. Miller, D. Mitrevski, J. Mokhov, N. Molina, J. Mondal, N. K. Montgomery, H. E. Moore, R. W. Moulik, T. Muanza, G. S. Mostafa, M. Moua, S. Mulders, M. Mundim, L. Mutaf, Y. D. Nagaraj, P. Nagy, E. Naimuddin, M. Nang, F. Narain, M. Narasimhan, V. S. Narayanan, A. Naumann, N. A. Neal, H. A. Negret, J. P. Nelson, S. Neuenschwander, R. T. Neustroev, P. Noeding, C. Nomerotski, A. Novaes, S. F. Nozdrin, A. Nunnemanny, T. Nurczyk, A. Nurse, E. O'Dell, V. O'Neil, D. C. Oguri, V. Olis, D. Oliveira, N. Olivier, B. Olsen, J. Oshima, N. Oshinowo, B. O. Otero y Garzon, G. J. Padley, P. Papageorgiou, K. Parashar, N. Park, J. Park, S. K. Parsons, J. Partridge, R. Parua, N. Patwa, A. Pawloski, G. Perea, P. M. Perez, E. Peters, O. Petroff, P. Petteni, M. Phaf, L. Piegaia, R. Pleier, M. -A. Podesta-Lerma, P. L. M. Podstavkov, V. M. Pogorelov, Y. Pol, M. -E. Pompos, A. Polosov, P. Pope, B. G. Popkov, E. Porokhovoy, S. Prado da Silva, W. L. Pritchard, W. Prokhorov, I. Prosper, H. B. Protopopescu, S. Przybycien, M. B. Qian, J. Quadt, A. Quinn, B. Ramberg, E. Ramirez-Gomez, R. Rani, K. J. Ranjan, K. Rao, M. V. S. Rapidis, P. A. Rapisarda, S. Raskowski, J. Ratoff, P. N. Ray, R. E. Reay, N. W. Rechenmacher, R. Reddy, L. V. Regan, T. Renardy, J. -F. Reucroft, S. Rha, J. Ridel, M. Rijssenbeek, M. Ripp-Baudot, I. Rizatdinova, F. Robinson, S. Rodrigues, R. F. Roco, M. Rotolo, C. Royon, C. Rubinov, P. Ruchti, R. Rucinski, R. Rud, V. I. Russakovich, N. Russo, P. Sabirov, B. Sajot, G. Sanchez-Hernandez, A. Sanders, M. P. Santoro, A. Satyanarayana, B. Savage, G. Sawyer, L. Scanlon, T. Schaile, D. Schamberger, R. D. Scheglov, Y. Schellman, H. Schieferdecker, P. Schmittz, C. Schwanenberger, C. Schukin, A. A. Schwartzman, A. Schwienhorst, R. Sengupta, S. Severini, H. Shabalina, E. Shamim, M. Shankar, H. C. Shary, V. Shchukin, A. A. Sheahan, P. Shephard, W. D. Shivpuri, R. K. Shishkin, A. A. Shpakov, D. Shupe, M. Sidwell, R. A. Simak, V. Sirotenko, V. Skow, D. Skubic, P. Slattery, P. Smith, D. E. Smith, R. P. Smolek, K. Snow, G. R. Snow, J. Snyder, S. Soldner-Rembold, S. Song, X. Song, Y. Sonnenschein, L. Sopczak, A. Sorin, V. Sosebee, M. Soustruznik, K. Souza, M. Spartana, N. Spurlock, B. Stanton, N. R. Stark, J. Steele, J. Stefanik, A. Steinberg, J. Steinbruck, G. Stevenson, K. Stolin, V. Stone, A. Stoyanova, D. A. Strandberg, J. Strang, M. A. Strauss, M. Stroehmery, R. Strom, D. Strovink, M. Stutte, L. Sumowidagdo, S. Sznajder, A. Talby, M. Tentindo-Repond, S. Tamburello, P. Taylor, W. Telford, P. Temple, J. Terentyev, N. Teterin, V. Thomas, E. Thompson, J. Thooris, B. Titov, M. Toback, D. Tokmenin, V. V. Tolian, C. Tomoto, M. Tompkins, D. Toole, T. Torborg, J. Touze, F. Towers, S. Trefzger, T. Trincaz-Duvoid, S. Trippe, T. G. Tsybychev, D. Tuchming, B. Tully, C. Turcot, A. S. Tuts, P. M. Utes, M. Uvarov, L. Uvarov, S. Uzunyan, S. Vachon, B. van den Berg, P. J. van Gemmeren, P. Van Kooten, R. van Leeuwen, W. M. Varelas, N. Varnes, E. W. Vartapetian, A. Vasilyev, I. A. Vaupel, M. Vaz, M. Verdier, P. Vertogradov, L. S. Verzocchi, M. Vigneault, M. Villeneuve-Seguier, F. Vishwanath, P. R. Vlimant, J. -R. Von Toerne, E. Vorobyov, A. Vreeswijk, M. Anh, T. Vu Vysotsky, V. Wahl, H. D. Walker, R. Wallace, N. Wang, L. Wang, Z. -M. Warchol, J. Warsinsky, M. Watts, G. Wayne, M. Weber, M. Weerts, H. Wegner, M. Wermes, N. Wetstein, M. White, A. White, V. Whiteson, D. Wicke, D. Wijnen, T. Wijngaarden, D. A. Wilcer, N. Willutzki, H. Wilson, G. W. Wimpenny, S. J. Wittlin, J. Wlodek, T. Wobisch, M. Womersley, J. Wood, D. R. Wyatt, T. R. Wu, Z. Xie, Y. Xu, Q. Xuan, N. Yacoob, S. Yamada, R. Yan, M. Yarema, R. Yasuda, T. Yatsunenko, Y. A. Yen, Y. Yip, K. Yoo, H. D. Yoffe, F. Youn, S. W. Yu, J. Yurkewicz, A. Zabi, A. Zanabria, M. Zatserklyaniy, A. Zdrazil, M. Zeitnitz, C. Zhang, B. Zhang, D. Zhang, X. Zhao, T. Zhao, Z. Zheng, H. Zhou, B. Zhou, B. Zhu, J. Zielinski, M. Zieminska, D. Zieminski, A. Zitoun, R. Zmuda, T. Zutshi, V. Zviagintsev, S. Zverev, E. G. Zylberstejn, A. CA DO Collaboration TI The upgraded DO detector SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Fermilab; DZero; DO; Tevatron Run II ID W BOSON MASS; 2ND-GENERATION LEPTOQUARK PAIRS; CENTRAL FIBER TRACKER; JET CROSS-SECTION; TOP-QUARK MASS; ROOT-S=1.8 TEV; P(P)OVER-BAR COLLISIONS; GAMMA COUPLINGS; (P)OVER-BAR-P COLLISIONS; SCINTILLATION-COUNTERS AB The DO experiment enjoyed a very successful data-collection run at the Fermilab Tevatron collider between 1992 and 1996. Since then, the detector has been upgraded to take advantage of improvements to the Tevatron and to enhance its physics capabilities. We describe the new elements of the detector, including the silicon microstrip tracker, central fiber tracker, solenoidal magnet, preshower detectors, forward muon detector, and forward proton detector. The uranium/liquid -argon calorimeters and central muon detector, remaining from Run 1, are discussed briefly. We also present the associated electronics, triggering, and data acquisition systems, along with the design and implementation of software specific to DO. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Buenos Aires, Buenos Aires, DF, Argentina. LAFEX, Ctr Braisileiro Pesquisas Fis, Rio De Janeiro, Brazil. Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil. Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil. Univ Alberta, Edmonton, AB, Canada. Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada. York Univ, Toronto, ON M3J 2R7, Canada. McGill Univ, Montreal, PQ H3A 2T5, Canada. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Sci & Technol China, Hefei 230026, Peoples R China. Univ Los Andes, Bogota, Colombia. Charles Univ Prague, Ctr Particle Phys, Prague, Czech Republic. Czech Tech Univ, CR-16635 Prague, Czech Republic. Acad Sci Czech Republic, Ctr Particle Phys, Inst Phys, Prague, Czech Republic. Univ San Francisco, Quito, Ecuador. Univ Clermont Ferrand, Lab Phys Corpusculaire, IN2P3, CNRS, Clermont Ferrand, France. Univ Grenoble 1, Lab Phys Subatom & Cosmol, IN2P3, CNRS, Grenoble, France. Univ Aix Marseille 2, CPPM, IN2P3, CNRS, Marseille, France. CNRS, IN2P3, Lab Accelerateur Lineaire, Orsay, France. Univ Paris 06, LPNHE, IN2P3, CNRS, Paris, France. Univ Paris 07, LPNHE, IN2P3, CNRS, Paris, France. CEA Saclay, DAPNIA, Serv Phys Particules, Gif Sur Yvette, France. Univ Strasbourg, IReS, IN2P3, CNRS, Strasbourg, France. Univ Haute Alsace, Mulhouse, France. Univ Lyon 1, Inst Phys Nucl Lyon, IN2P3, CNRS, F-69622 Villeurbanne, France. Rhein Westfal TH Aachen, Phys Inst A 3, D-5100 Aachen, Germany. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Freiburg, Inst Phys, Freiburg, Germany. Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany. Univ Munich, Munich, Germany. Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany. Panjab Univ, Chandigarh 160014, India. Univ Delhi, Delhi 110007, India. Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. Univ Coll Dublin, Dublin 2, Ireland. Korea Univ, Korea Detector Lab, Seoul 136701, South Korea. CINVESTAV, Mexico City 14000, DF, Mexico. NIKHEF, FOM Inst, Amsterdam, Netherlands. Univ Amsterdam, NIKHEF, Amsterdam, Netherlands. Radboud Univ Nijmegen, NIKHEF, Nijmegen, Netherlands. Joint Inst Nucl Res, Dubna, Russia. Inst Theoret & Expt Phys, Moscow 117259, Russia. Moscow MV Lomonosov State Univ, Moscow, Russia. Inst High Energy Phys, Protvino, Russia. Petersburg Nucl Phys Inst, St Petersburg, Russia. Lund Univ, Lund, Sweden. Royal Inst Technol, Stockholm, Sweden. Stockholm Univ, S-10691 Stockholm, Sweden. Uppsala Univ, S-75105 Uppsala, Sweden. Univ Lancaster, Lancaster, England. Imperial Coll London, London, England. Univ Manchester, Manchester, Lancs, England. Univ Arizona, Tucson, AZ 85721 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. Calif State Univ Fresno, Fresno, CA 93740 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Florida State Univ, Tallahassee, FL 32306 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Illinois, Chicago, IL 60607 USA. No Illinois Univ, De Kalb, IL 60115 USA. Northwestern Univ, Evanston, IL 60208 USA. Indiana Univ, Bloomington, IN 47405 USA. Univ Notre Dame, Notre Dame, IN 46556 USA. Iowa State Univ, Ames, IA 50011 USA. Univ Kansas, Lawrence, KS 66045 USA. Kansas State Univ, Manhattan, KS 66506 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Univ Maryland, College Pk, MD 20742 USA. Boston Univ, Boston, MA 02215 USA. Northeastern Univ, Boston, MA 02115 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ Mississippi, University, MS 38677 USA. Univ Nebraska, Lincoln, NE 68588 USA. Princeton Univ, Princeton, NJ 08544 USA. Columbia Univ, New York, NY 10027 USA. Univ Rochester, Rochester, NY 14627 USA. SUNY Stony Brook, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Langston Univ, Langston, OK 73050 USA. Univ Oklahoma, Norman, OK 73019 USA. Brown Univ, Providence, RI 02912 USA. Univ Texas, Arlington, TX 76019 USA. So Methodist Univ, Dallas, TX 75275 USA. Rice Univ, Houston, TX 77005 USA. Univ Virginia, Charlottesville, VA 22901 USA. Univ Washington, Seattle, WA 98195 USA. Belarusian State Univ, Inst Nucl Problems, Minsk 220050, Byelarus. Belarusian State Univ, Natl Sci & Educ Ctr Particle & High Energy Phys, Minsk 220050, Byelarus. Res & Prod Corp Integral, Minsk, Byelarus. Inst Nucl Phys, Krakow, Poland. Univ Zurich, Zurich, Switzerland. RP Blessing, S (reprint author), Univ Buenos Aires, Buenos Aires, DF, Argentina. EM blessing@hep.fsu.edu RI Telford, Paul/B-6253-2011; Nomerotski, Andrei/A-5169-2010; Shivpuri, R K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; Dudko, Lev/D-7127-2012; Leflat, Alexander/D-7284-2012; Merkin, Mikhail/D-6809-2012; Bheesette, Satyanarayana/A-1360-2013; Novaes, Sergio/D-3532-2012; Mundim, Luiz/A-1291-2012; Yip, Kin/D-6860-2013; Gornushkin, Yury/F-4788-2013; Dvornikov, Oleg/I-7207-2013; Kuleshov, Sergey/D-9940-2013; De, Kaushik/N-1953-2013; Fisher, Wade/N-4491-2013; Oguri, Vitor/B-5403-2013; Alves, Gilvan/C-4007-2013; Santoro, Alberto/E-7932-2014; Deliot, Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Juni Ferreira, Marcelo/I-5028-2015; KIM, Tae Jeong/P-7848-2015; Sznajder, Andre/L-1621-2016; Canelli, Florencia/O-9693-2016; Bargassa, Pedrame/O-2417-2016; OI Dudko, Lev/0000-0002-4462-3192; Novaes, Sergio/0000-0003-0471-8549; Mundim, Luiz/0000-0001-9964-7805; Yip, Kin/0000-0002-8576-4311; Gornushkin, Yury/0000-0003-3524-4032; Kuleshov, Sergey/0000-0002-3065-326X; De, Kaushik/0000-0002-5647-4489; Sharyy, Viatcheslav/0000-0002-7161-2616; KIM, Tae Jeong/0000-0001-8336-2434; Sznajder, Andre/0000-0001-6998-1108; Canelli, Florencia/0000-0001-6361-2117; Bean, Alice/0000-0001-5967-8674; Bargassa, Pedrame/0000-0001-8612-3332; Fatakia, Sarosh/0000-0003-0430-3191 NR 84 TC 477 Z9 477 U1 6 U2 51 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 EI 1872-9576 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 15 PY 2006 VL 565 IS 2 BP 463 EP 537 DI 10.1016/j.nima.2006.05.248 PG 75 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 086ZY UT WOS:000240713100015 ER PT J AU Goncharov, M Kamon, T Khotilovich, V Krutelyov, V Lee, SW Toback, D Wagner, P Frisch, H Sanders, H Cordelli, M Happacher, F Miscetti, S Wagner, R AF Goncharov, M. Kamon, T. Khotilovich, V. Krutelyov, V. Lee, S. W. Toback, D. Wagner, P. Frisch, H. Sanders, H. Cordelli, M. Happacher, F. Miscetti, S. Wagner, R. TI The timing system for the CDF electromagnetic calorimeters SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE electromagnetic calorimeter; timing; CDF ID HIGGS BOSONS; FERMILAB TEVATRON; HADRON COLLIDERS; SUPERSYMMETRY; GRAVITINO; SEARCHES; EVENT AB We report on the design and performance of the electromagnetic calorimeter timing readout system (EMTiming) for the Collider Detector at Fermilab (CDF). The system will be used in searches for rare events with high-energy photons to verify that the photon is in time with the event collision, to reject cosmic-ray and beam-halo backgrounds, and to allow direct searches for new, heavy, long-lived neutral particles that decay to photons. The installation and commissioning of all 862 channels were completed in Fall 2004 as part of an upgrade to the Run II version of the detector. Using in situ data, including electrons from W -> ev and Z -> ee decays, we measure the energy threshold for a time to be recorded to be 3.8 +/- 10.3 GeV (1.9 +/- 0.1 GeV) in the central (plug) portion of the detector. Similarly, for the central (plug) portion we measure a timing resolution of 600 +/- 10 ps (610 +/- 10 ps) for electrons above 10 GeV (6 GeV). There are very few system pathologies such as recording a time when no energy is deposited, or recording a second, fake time for a single energy deposit. (c) 2006 Published by Elsevier B.V. C1 Texas A&M Univ, College Stn, TX 77843 USA. Univ Chicago, Chicago, IL 60637 USA. Ist Nazl Fis Nucl, Frascati, Italy. Argonne Natl Lab, Argonne, IL 60439 USA. RP Toback, D (reprint author), Texas A&M Univ, College Stn, TX 77843 USA. EM toback@tamu.edu OI Toback, David/0000-0003-3457-4144 NR 29 TC 22 Z9 22 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 15 PY 2006 VL 565 IS 2 BP 543 EP 550 DI 10.1016/j.nima.2006.06.011 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 086ZY UT WOS:000240713100017 ER PT J AU Devanathan, R Corrales, LR Gao, F Weber, WJ AF Devanathan, R. Corrales, L. R. Gao, F. Weber, W. J. TI Signal variance in gamma-ray detectors - A review SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE gamma-ray spectroscopy; variance; Fano factor; resolution; semiconductor; scintillator ID ELECTRON-HOLE-PAIR; LIGHT YIELD NONPROPORTIONALITY; INTRINSIC ENERGY RESOLUTION; FANO FACTOR; ION-PAIR; X-RAYS; SEMICONDUCTOR-DETECTORS; SCINTILLATION RESPONSE; INORGANIC-SCINTILLATOR; RADIATION DETECTION AB Signal variance in gamma-ray detector materials is reviewed with an emphasis on intrinsic variance. Phenomenological models of electron cascades are examined and the Fano factor (F) is discussed in detail. In semiconductors, F is much smaller than unity and charge carrier production is nearly proportional to energy. Based on a fit to a number of semiconductors and insulators, a new relationship between the average energy for electron-hole pair production and band gap energy is proposed. In scintillators, the resolution is governed mainly by photoelectron statistics and proportionality of light yield with respect to energy. (c) 2006 Elsevier B.V. All rights reserved. C1 Pacific NW Natl Lab, Fundamental Sci Directorate, Richland, WA 99352 USA. RP Devanathan, R (reprint author), Pacific NW Natl Lab, Fundamental Sci Directorate, MS K8-93, Richland, WA 99352 USA. EM ram.devanathan@pnl.gov RI Weber, William/A-4177-2008; Gao, Fei/H-3045-2012; Devanathan, Ram/C-7247-2008 OI Weber, William/0000-0002-9017-7365; Devanathan, Ram/0000-0001-8125-4237 NR 71 TC 46 Z9 47 U1 1 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 EI 1872-9576 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 15 PY 2006 VL 565 IS 2 BP 637 EP 649 DI 10.1016/j.nima.2006.05.085 PG 13 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 086ZY UT WOS:000240713100027 ER PT J AU Avdic, S Pozzi, SA Protopopescu, V AF Avdic, Senada Pozzi, Sara A. Protopopescu, Vladimir TI Detector response unfolding using artificial neural networks SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE neutron spectra; scintillation detector; neural networks; identification and unfolding; nuclear nonproliferation and safeguards ID BONNER SPHERES AB We present new results on the identification and unfolding of neutron spectra from the pulse height distribution measured with liquid scintillators. The novelty of the method consists of the dual use of linear and nonlinear artificial neural networks (ANNs). The linear networks solve the superposition problem in the general unfolding problem, whereas the nonlinear networks provide greater accuracy in the neutron source identification problem. Two additional new aspects of the present approach are (i) the use of a very accurate Monte Carlo code for the simulations needed in the training phase of the ANNs and (ii) the ability of the network to respond to short-time and therefore very noisy experimental measurements. This approach ensures sufficient accuracy, timeliness, and robustness to make it a candidate of choice for the heretofore unaddressed nuclear nonproliferation and safeguards applications in which both identification and unfolding are needed. (c) 2006 Elsevier B.V. All rights reserved. C1 Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN USA. RP Pozzi, SA (reprint author), Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. EM pozzisa@ornl.gov NR 17 TC 13 Z9 13 U1 1 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 SEP 15 PY 2006 VL 565 IS 2 BP 742 EP 752 DI 10.1016/j.nima.2006.06.023 PG 11 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 086ZY UT WOS:000240713100037 ER PT J AU Muller, H Pimenta, R Yin, ZB Zhou, DC Cao, X Li, QX Liu, YZ Zou, FF Skaali, B Awes, TC AF Muller, Hans Pimenta, Rui Yin, Zhongbao Zhou, Daicui Cao, Xi Li, Qingxia Liu, Yingzhuang Zou, FeiFei Skaali, Bernhard Awes, Terry C. TI Configurable electronics with low noise and 14-bit dynamic range for photodiode-based photon detectors SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE photon detector readout; photodiode; APD; configurable front end electronics; discrete low-noise shaper; dynamic range; timing resolution; altro ADC AB We describe the principles and measured performance of custom configurable 32-channel shaper/digitizer Front End Electronics (FEE) cards with 14-bit dynamic range for gain-adjustable photon detectors. The electronics has been designed for the PHOS calorimeter of ALICE with avalanche photodiode (APD) readout operated at -25 degrees C ambient temperature and a signal shaping time of 1 mu s. The electronics has also been adopted by the EMCal detector of ALICE with the same APD readout, but operated at an ambient temperature of +20 degrees C and with a shaping time of 100 us. The CR-RC2 signal shapers on the FEE cards are implemented in discrete logic on a 10-layer board with two shaper sections for each input channel. The two shaper sections with gain ratio of 16:1 are digitized by 10-bit ADCs and provide an effective dynamic range of 14 bits. Gain adjustment for each individual APD is available through 32 bias voltage control registers of 10-bit range. The fixed gains and shaping times of the pole-zero compensated shapers are defined prior to FEE production by the values of a few R and C components. For trigger purposes, "fast OR" outputs with 12-bit dynamic range are available. FPGA based slave logic, combined with a USB processor supports a variety of remote control and monitoring features, including APD gain calibration. The measurements presented here for APDs at -25 degrees C ambient temperature and 1 mu s shaping time achieve an average RMS noise level of 0.25 ADC counts or 290 electrons. The linearity over the dynamic range is better than 1%, as is the uniformity of shaping time and gain over 32 channels. Due to the excellent correspondence of the output pulse shape with offline fit, a differential timing resolution of less than 1.5ns between channels has been achieved at ca. 2 GeV, i.e. at 1.5% of the dynamic range of PHOS. (c) 2006 Elsevier B.V. All rights reserved. C1 CERN, PH Dept, CH-1211 Geneva 23, Switzerland. Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China. Huazhong Univ Sci & Technol, Dept Elect & Informat, Wuhan 430074, Peoples R China. Univ Oslo, Dept Phys, N-0316 Oslo, Norway. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Muller, H (reprint author), CERN, PH Dept, CH-1211 Geneva 23, Switzerland. EM hans.muller@cern.ch NR 19 TC 16 Z9 17 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 15 PY 2006 VL 565 IS 2 BP 768 EP 783 DI 10.1016/j.nima.2006.05.246 PG 16 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 086ZY UT WOS:000240713100040 ER PT J AU Feser, M Hornberger, B Jacobsen, C De Geronimo, G Rehak, P Holl, P Struder, L AF Feser, Michael Hornberger, Benjamin Jacobsen, Chris De Geronimo, Gianluigi Rehak, Pavel Holl, Peter Strueder, Lothar TI Integrating Silicon detector with segmentation for scanning transmission X-ray microscopy SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE X-ray microscopy; X-ray spectromicroscopy; X-ray detectors; X-ray phase contrast imaging ID PHASE-CONTRAST; PHOTODIODES; RESOLUTION AB Scanning transmission X-ray microscopes require detectors with high quantum efficiency and wide dynamic range. While large area detectors provide absorption contrast, the addition of spatial segmentation adds phase contrast imaging capabilities. We describe a charge integrating Silicon detector for use at energies from 200-1000 eV. The detector uses patterned rectifying junctions on high-resistivity n-type Silicon, with separate current readout for each segment. The detector has been subdivided into eight regions arranged in a circular geometry according to the beam profile in a scanning X-ray microscope. The uncooled chip is fully depleted by a positive bias voltage applied at the ohmic contact on the back side. X-rays are collected on the radiation-hard back side with very high efficiency (> 75% for 250 eV X-rays), and compact, low-noise electronics integrate the current from the detector segments. The RMS noise of the combined system is about 500 electrons/channel for a 1 ms integration time, which is equivalent to about five photons per channel at 360 eV X-ray energy. (c) 2006 Elsevier B.V. All rights reserved. C1 Brookhaven Natl Lab, Div Instrumentat, Upton, NY 11973 USA. Stony Brook Univ, Dept Phys & Astron, Stony Brook, NY 11794 USA. PNSensor GmbH, D-80803 Munich, Germany. MPI Extraterr Phys, D-85741 Garching, Germany. RP Rehak, P (reprint author), Brookhaven Natl Lab, Div Instrumentat, Upton, NY 11973 USA. EM benjamin.hornberger@stonybrook.edu; rehak@bnl.gov RI Jacobsen, Chris/E-2827-2015 OI Jacobsen, Chris/0000-0001-8562-0353 NR 34 TC 26 Z9 26 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD SEP 15 PY 2006 VL 565 IS 2 BP 841 EP 854 DI 10.1016/j.nima.2006.05.086 PG 14 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 086ZY UT WOS:000240713100046 ER PT J AU Holtom, GR AF Holtom, Gary R. TI Mode-locked Yb : KGW laser longitudinally pumped by polarization-coupled diode bars SO OPTICS LETTERS LA English DT Article ID SOLID-STATE LASERS; AVERAGE POWER; CRYSTAL; YB-KGD(WO4)(2); LOCKING AB Mode-locked operation of a simple Yb:KGW (potassium gadolinium tungstate) oscillator is described, providing 10 W at 1039 nm with a 290 fs pulse width. A polarization-coupled scheme is used for efficient longitudinal pumping by a pair of reshaped laser diode bars. With changes in cavity dispersion, the pulse width is adjustable from 134 to 433 fs, in a high-quality circular mode. A saturable absorber mirror provides self-starting operation, and the cavity is stabilized by the Kerr-lens effect. (c) 2006 Optical Society of America. C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99354 USA. RP Holtom, GR (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99354 USA. EM gary.holtom@pnl.gov NR 14 TC 56 Z9 58 U1 4 U2 22 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD SEP 15 PY 2006 VL 31 IS 18 BP 2719 EP 2721 DI 10.1364/OL.31.002719 PG 3 WC Optics SC Optics GA 083GN UT WOS:000240444500018 PM 16936869 ER PT J AU Kim, J Suri, JT Cordes, DB Singaram, B AF Kim, Jinsoo Suri, Jeff T. Cordes, David B. Singaram, Bakthan TI Asymmetric reductions involving borohydrides: A practical asymmetric reduction of ketones mediated by (L)-TarB-NO2: A chiral Lewis acid SO ORGANIC PROCESS RESEARCH & DEVELOPMENT LA English DT Review ID ENANTIOSELECTIVE BORANE REDUCTION; SODIUM-BOROHYDRIDE; AROMATIC KETONES; ORGANIC-SYNTHESIS; CARBOXYLIC-ACIDS; REDUCING AGENT; COMPLEXES; REAGENTS; SYSTEM; 1,2-5,6-DI-O-ISOPROPYLIDENE-ALPHA-D-GLUCOFURANOSE AB The asymmetric reduction of prochiral ketones has been achieved through a myriad of different methods. Early reductions gave low to moderate enantiomeric excesses (ee's), but more modern reagents have led to dramatic increases in enantioselectivity. The development of (L)-TarB-NO2 boronic ester is extensively reviewed in the context of other well-known asymmetric reducing reagents. In combination with NaBH4, the chiral intermediate is able to reduce prochiral ketones to optically active secondary alcohols in ee's as high as 99% and can be easily recovered under basic conditions. C1 Univ Calif Santa Cruz, Dept Chem & Biochem, Santa Cruz, CA 95064 USA. GluMetrix Inc, Irvine, CA 92618 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Singaram, B (reprint author), Univ Calif Santa Cruz, Dept Chem & Biochem, 1156 High St, Santa Cruz, CA 95064 USA. EM singaram@chemistry.ucsc.edu NR 61 TC 16 Z9 16 U1 1 U2 19 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1083-6160 EI 1520-586X J9 ORG PROCESS RES DEV JI Org. Process Res. Dev. PD SEP 15 PY 2006 VL 10 IS 5 BP 949 EP 958 DI 10.1021/op060079d PG 10 WC Chemistry, Applied; Chemistry, Organic SC Chemistry GA 084DD UT WOS:000240511200018 ER PT J AU Wang, H Foltyn, SR Arendt, PN Jia, QX Zhang, X AF Wang, H. Foltyn, S. R. Arendt, P. N. Jia, Q. X. Zhang, X. TI Identification of the misfit dislocations at YBa2Cu3O7-delta/SrTiO3 interface using moire fringe contrast SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article DE moire fringe; misfit dislocation; YBCO; TEM ID TRANSMISSION ELECTRON-MICROSCOPE; THICK-FILMS; MGO AB Misfit dislocations at YBa2Cu3O7-delta (YBCO)/SrTiO3 (STO) interfaces were studied to understand effects which could be responsible for the high interfacial J(c) in YBCO thin films. In YBCO films with thickness ranging from 5 to 100 nm, the interfacial structures (e.g. misfit dislocations) of YBCO/STO were investigated using moire fringe contrast in plan-view transmission electron microscopy (TEM). The observed moire pattern has a spacing of 17 nm which corresponds to the lattice mismatch between the YBCO a lattice spacing and the cubic STO lattice constant. As the YBCO thickness reaches 100 nm, twin structures dominate the image contrast. Our observations indicate that the moire pattern originates from the lattice mismatch between the substrate and the orthorhombic phase of YBCO. (c) 2006 Elsevier B.V. All rights reserved. C1 Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA. Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA. RP Wang, H (reprint author), Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA. EM wangh@ece.tamu.edu RI Jia, Q. X./C-5194-2008; Zhang, Xinghang/H-6764-2013; Wang, Haiyan/P-3550-2014 OI Zhang, Xinghang/0000-0002-8380-8667; Wang, Haiyan/0000-0002-7397-1209 NR 15 TC 15 Z9 16 U1 5 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD SEP 15 PY 2006 VL 444 IS 1-2 BP 1 EP 4 DI 10.1016/j.physc.2006.05.078 PG 4 WC Physics, Applied SC Physics GA 076PU UT WOS:000239971000001 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 Anzelc, MS Arnoud, Y Arov, M Askew, A Asman, B Jesus, ACSA Atramentov, O Autermann, C Avila, C Ay, C Badaud, F Baden, A Bagby, L Baldin, B Bandurin, DV Banerjee, P Banerjee, S Barberis, E Bargassa, P Baringer, P Barnes, C Barreto, J Bartlett, JF Bassler, U Bauer, D Bean, A Begalli, M Begel, M Belanger-Champagne, C Bellantoni, L Bellavance, A Benitez, JA Beri, SB Bernardi, G Bernhard, R Berntzon, L 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 Bloom, K Blumenschein, U Boehnlein, A Boeriu, O Bolton, TA Borcherding, F Borissov, G Bos, K Bose, T Brandt, A Brock, R Brooijmans, G Bross, A Brown, D Buchanan, NJ Buchholz, D Buehler, M Buescher, V Burdin, S Burke, S Burnett, TH Busato, E Buszello, CP Butler, JM Calfayan, P Calvet, S 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 Chevallier, F Cho, DK Choi, S Choudhary, B Christofek, L Claes, D Clement, B Clement, C Coadou, Y Cooke, M Cooper, WE Coppage, D Corcoran, M Cousinou, MC Cox, B Crepe-Renaudin, S Cutts, D Cwiok, M da Motta, H Das, A Das, M Davies, B Davies, G Davis, GA De, K de Jong, P de Jong, SJ De la Cruz-Burelo, E Martins, CD Degenhardt, JD Deliot, F Demarteau, M Demina, R Demine, P Denisov, D Denisov, SP Desai, S Diehl, HT Diesburg, M Doidge, M Dominguez, A Dong, H 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 Estrada, J Evans, H Evdokimov, A Evdokimov, VN Fatakia, SN Feligioni, L Ferapontov, AV Ferbel, T Fiedler, F Filthaut, F Fisher, W Fisk, HE Fleck, I Ford, M 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, A Gay, P Gele, D Gelhaus, R Gerber, CE Gershtein, Y Gillberg, D Ginther, G Gollub, N Gomez, B Gounder, K Goussiou, A Grannis, PD Greenlee, H Greenwood, ZD Gregores, EM Grenier, G Gris, P Grivaz, JF Grunendahl, S Grunewald, MW Guo, F Guo, J Gutierrez, G Gutierrez, P Haas, A Hadley, NJ Haefner, P Hagopian, S Haley, J Hall, I Hall, RE Han, L Hanagaki, K Harder, K Harel, A Harrington, R Hauptman, JM Hauser, R Hays, J Hebbeker, T Hedin, D Hegeman, JG Heinmiller, JM Heinson, AP Heintz, U Hensel, C Hesketh, G Hildreth, MD Hirosky, R Hobbs, JD Hoeneisen, B Hoeth, H Hohlfeld, M Hong, SJ Hooper, R Houben, P Hu, Y Hubacek, Z Hynek, V Iashvili, I Illingworth, R Ito, AS Jabeen, S Jaffre, M Jain, S Jakobs, K Jarvis, C Jenkins, A Jesik, R Johns, K Johnson, C Johnson, M Jonckheere, A Jonsson, P Juste, A Kafer, D Kahn, S Kajfasz, E Kalinin, AM Kalk, JM Kalk, JR Kappler, S Karmanov, D Kasper, J Kasper, P Katsanos, I Kau, D Kaur, R Kehoe, R Kermiche, S Kesisoglou, S Khalatyan, N Khanov, A Kharchilava, A Kharzheev, YM Khatidze, D Kim, H Kim, TJ Kirby, MH Klima, B Kohli, JM Konrath, JP Kopal, M Korablev, VM Kotcher, J Kothari, B Koubarovsky, A Kozelov, AV Kozminski, J Kryemadhi, A Krzywdzinski, S Kuhl, T Kumar, A Kunori, S Kupco, A Kurca, T Kvita, J Lager, S Lammers, S Landsberg, G Lazoflores, J Le Bihan, AC Lebrun, P Lee, WM Leflat, A Lehner, F Lesne, V Leveque, J Lewis, P Li, J Li, QZ Lima, JGR Lincoln, D Linnemann, J Lipaev, VV Lipton, R Liu, Z Lobo, L Lobodenko, A Lokajicek, M Lounis, A Love, P Lubatti, HJ 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 McCarthy, R McCroskey, R Meder, D Melnitchouk, A Mendes, A Mendoza, L Merkin, M Merritt, KW Meyer, A Meyer, J Michaut, M Miettinen, H Millet, T Mitrevski, J Molina, J Mondal, NK Monk, J Moore, RW Moulik, T Muanza, GS Mulders, M Mulhearn, M Mundim, L Mutaf, YD Nagy, E Naimuddin, M Narain, M Naumann, NA Neal, HA Negret, JP Nelson, S Neustroev, P Noeding, C Nomerotski, A Novaes, SF Nunnemann, T O'Dell, V O'Neil, DC Obrant, G Oguri, V Oliveira, N Oshima, N Otec, R Garzon, GJOY Owen, M Padley, P Parashar, N Park, SJ Park, SK Parsons, J Partridge, R Parua, N Patwa, A Pawloski, G Perea, PM Perez, E Peters, K Petroff, P Petteni, M Piegaia, R Pleier, MA Podesta-Lerma, PLM Podstavkov, VM Pogorelov, Y Pol, ME Pompos, A Pope, BG Popov, AV da Silva, WLP Prosper, HB Protopopescu, S Qian, J Quadt, A Quinn, B Rani, KJ Ranjan, K Rapidis, PA Ratoff, PN Renkel, P 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 Scheglov, Y 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 Siccardi, V Sidwell, RA Simak, V Sirotenko, V Skubic, P Slattery, P Smith, RP Snow, GR Snow, J Snyder, S Soldner-Rembold, S Song, X Sonnenschein, L Sopczak, A Sosebee, M Soustruznik, K Souza, M Spurlock, B 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 Tiller, B Titov, M Tokmenin, VV Tomoto, M Toole, T Torchiani, I Towers, S Trefzger, T Trincaz-Duvoid, S Tsybychev, D Tuchming, B Tully, C Turcot, AS Tuts, PM Unalan, R Uvarov, L Uvarov, S Uzunyan, S Vachon, B van den Berg, PJ 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 Vint, P Vlimant, JR Von Toerne, E Voutilainen, M Vreeswijk, M Wahl, HD Wang, L Warchol, J Watts, G Wayne, M Weber, M Weerts, H Wermes, N Wetstein, M White, A Wicke, D Wilson, GW Wimpenny, SJ Wobisch, M Womersley, J Wood, DR Wyatt, TR Xie, Y Xuan, N Yacoob, S Yamada, R Yan, M Yasuda, T Yatsunenko, YA Yip, K Yoo, HD Youn, SW Yu, C Yu, J Yurkewicz, A Zatserklyaniy, A Zeitnitz, C Zhang, D Zhao, T Zhao, Z Zhou, B Zhu, J Zielinski, M Zieminska, D Zieminski, A Zutshi, V Zverev, EG AF Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S. Adams, M. Adams, T. Agelou, M. Agram, J. -L. Ahn, S. H. Ahsan, M. Alexeev, G. D. Alkhazov, G. Alton, A. Alverson, G. Alves, G. A. Anastasoaie, M. Andeen, T. Anderson, S. Andrieu, B. Anzelc, M. S. Arnoud, Y. Arov, M. Askew, A. Asman, B. Jesus, A. C. S. Assis Atramentov, O. Autermann, C. Avila, C. Ay, C. Badaud, F. Baden, A. Bagby, L. Baldin, B. Bandurin, D. V. Banerjee, P. Banerjee, S. Barberis, E. Bargassa, P. Baringer, P. Barnes, C. Barreto, J. Bartlett, J. F. Bassler, U. Bauer, D. Bean, A. Begalli, M. Begel, M. Belanger-Champagne, C. Bellantoni, L. Bellavance, A. Benitez, J. A. Beri, S. B. Bernardi, G. Bernhard, R. Berntzon, L. Bertram, I. Besancon, M. Beuselinck, R. Bezzubov, V. A. Bhat, P. C. Bhatnagar, V. Binder, M. Biscarat, C. Black, K. M. Blackler, I. Blazey, G. Blekman, F. Blessing, S. Bloch, D. Bloom, K. Blumenschein, U. Boehnlein, A. Boeriu, O. Bolton, T. A. Borcherding, F. Borissov, G. Bos, K. Bose, T. Brandt, A. Brock, R. Brooijmans, G. Bross, A. Brown, D. Buchanan, N. J. Buchholz, D. Buehler, M. Buescher, V. Burdin, S. Burke, S. Burnett, T. H. Busato, E. Buszello, C. P. Butler, J. M. Calfayan, P. Calvet, S. Cammin, J. Caron, S. Carvalho, W. Casey, B. C. K. Cason, N. M. Castilla-Valdez, H. Chakrabarti, S. Chakraborty, D. Chan, K. M. Chandra, A. Chapin, D. Charles, F. Cheu, E. Chevallier, F. Cho, D. K. Choi, S. Choudhary, B. Christofek, L. Claes, D. Clement, B. Clement, C. Coadou, Y. Cooke, M. Cooper, W. E. Coppage, D. Corcoran, M. Cousinou, M. -C. Cox, B. Crepe-Renaudin, S. Cutts, D. Cwiok, M. da Motta, H. Das, A. Das, M. Davies, B. Davies, G. Davis, G. A. De, K. de Jong, P. de Jong, S. J. De la Cruz-Burelo, E. Martins, C. De Oliveira Degenhardt, J. D. Deliot, F. Demarteau, M. Demina, R. Demine, P. Denisov, D. Denisov, S. P. Desai, S. Diehl, H. T. Diesburg, M. Doidge, M. Dominguez, A. Dong, H. Dudko, L. V. Duflot, L. Dugad, S. R. Duperrin, A. Dyer, J. Dyshkant, A. Eads, M. Edmunds, D. Edwards, T. 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Song, X. Sonnenschein, L. Sopczak, A. Sosebee, M. Soustruznik, K. Souza, M. Spurlock, B. Stark, J. Steele, J. Stevenson, K. Stolin, V. Stone, A. Stoyanova, D. A. Strandberg, J. Strang, M. A. Strauss, M. Stroehmer, R. Strom, D. Strovink, M. Stutte, L. Sumowidagdo, S. Sznajder, A. Talby, M. Tamburello, P. Taylor, W. Telford, P. Temple, J. Tiller, B. Titov, M. Tokmenin, V. V. Tomoto, M. Toole, T. Torchiani, I. Towers, S. Trefzger, T. Trincaz-Duvoid, S. Tsybychev, D. Tuchming, B. Tully, C. Turcot, A. S. Tuts, P. M. Unalan, R. Uvarov, L. Uvarov, S. Uzunyan, S. Vachon, B. van den Berg, P. J. Van Kooten, R. van Leeuwen, W. M. Varelas, N. Varnes, E. W. Vartapetian, A. Vasilyev, I. A. Vaupel, M. Verdier, P. Vertogradov, L. S. Verzocchi, M. Villeneuve-Seguier, F. Vint, P. Vlimant, J. -R. Von Toerne, E. Voutilainen, M. Vreeswijk, M. Wahl, H. D. Wang, L. Warchol, J. Watts, G. Wayne, M. Weber, M. Weerts, H. Wermes, N. Wetstein, M. White, A. Wicke, D. Wilson, G. W. Wimpenny, S. J. Wobisch, M. Womersley, J. Wood, D. R. Wyatt, T. R. Xie, Y. Xuan, N. Yacoob, S. Yamada, R. Yan, M. Yasuda, T. Yatsunenko, Y. A. Yip, K. Yoo, H. D. Youn, S. W. Yu, C. Yu, J. Yurkewicz, A. Zatserklyaniy, A. Zeitnitz, C. Zhang, D. Zhao, T. Zhao, Z. Zhou, B. Zhu, J. Zielinski, M. Zieminska, D. Zieminski, A. Zutshi, V. Zverev, E. G. CA D0 Collaboration TI Search for resonant second generation slepton production at the Fermilab Tevatron SO PHYSICAL REVIEW LETTERS LA English DT Article ID SUPERSYMMETRY; COLLIDERS; DECAY AB We present a search for supersymmetry in the R-parity violating resonant production and decay of smuons and muon sneutrinos in the channels mu ->chi(0)(1)mu, mu ->chi(0)(2,3,4)mu, and nu(mu)->chi(+/-)(1,2)mu. We analyzed 0.38 fb(-1) of integrated luminosity collected between April 2002 and August 2004 with the D0 detector at the Fermilab Tevatron Collider. The observed number of events is in agreement with the standard model expectation, and we calculate 95% C.L. limits on the slepton production cross section times branching fraction to gaugino plus muon, as a function of slepton and gaugino masses. In the framework of minimal supergravity, we set limits on the coupling parameter lambda(')(211), extending significantly previous results obtained in Run I of the Tevatron and at the CERN LEP collider. C1 Joint Inst Nucl Res, Dubna, Russia. Univ Buenos Aires, Buenos Aires, DF, Argentina. Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil. Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil. Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil. Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada. Univ Alberta, Edmonton, AB, Canada. York Univ, Toronto, ON M3J 2R7, Canada. McGill Univ, Montreal, PQ, Canada. Inst High Energy Phys, Beijing 100039, Peoples R China. Univ Sci & Technol China, Hefei 230026, Peoples R China. Univ Los Andes, Bogota, Colombia. Charles Univ, Ctr Particle Phys, Prague, Czech Republic. Czech Tech Univ, CR-16635 Prague, Czech Republic. Acad Sci Czech Republ, Inst Phys, Ctr Particle Phys, Prague, Czech Republic. Univ San Francisco Quito, Quito, Ecuador. Univ Clermont Ferrand, CNRS, IN2P3, Phys Corpusculaire Lab, Clermont Ferrand, France. Univ Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol, Grenoble, France. Univ Mediterranee, CNRS, IN2P3, CPPM, Marseille, France. CNRS, Accelerateur Lineaire Lab, IN2P3, F-91405 Orsay, France. Univ Paris 06, CNRS, LPNHE, IN2P3, Paris, France. Univ Paris 07, Paris, France. CEA, DAPNIA, Serv Phys Particules, Saclay, France. Univ Haute Alsace, Mulhouse, France. Univ Strasbourg 1, CNRS, IN2P3, IReS, Strasbourg, France. Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France. Rhein Westfal TH Aachen, Phys Inst 3A, D-5100 Aachen, Germany. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Freiburg, Inst Phys, Freiburg, Germany. Univ Mainz, Inst Phys, D-6500 Mainz, Germany. Univ Munich, Munich, Germany. Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany. Panjab Univ, Chandigarh 160014, India. Univ Delhi, Delhi 110007, India. Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. Univ Coll Dublin, Dublin 2, Ireland. Korea Univ, Korea Detector Lab, Seoul 136701, South Korea. Sungkyunkwan Univ, Suwon, South Korea. CINVESTAV, Mexico City 14000, DF, Mexico. NIKHEF H, FOM Inst, NL-1009 DB Amsterdam, Netherlands. Univ Amsterdam, NIKHEF H, Amsterdam, Netherlands. Radboud Univ Nijmegen, NIKHEF H, Nijmegen, Netherlands. Inst Theoret & Expt Phys, Moscow 117259, Russia. Moscow MV Lomonosov State Univ, Moscow, Russia. Inst High Energy Phys, Protvino, Russia. Petersburg Nucl Phys Inst, St Petersburg, Russia. Royal Inst Technol, Stockholm, Sweden. Lund Univ, Lund, Sweden. Stockholm Univ, S-10691 Stockholm, Sweden. Uppsala Univ, Uppsala, Sweden. Univ Zurich, Inst Phys, Zurich, Switzerland. Univ Lancaster, Lancaster, England. Univ London Imperial Coll Sci & Technol, London, England. Univ Manchester, Manchester, Lancs, England. Univ Arizona, Tucson, AZ 85721 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Calif State Univ Fresno, Fresno, CA 93740 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Florida State Univ, Tallahassee, FL 32306 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Illinois, Chicago, IL 60607 USA. No Illinois Univ, De Kalb, IL 60115 USA. Northwestern Univ, Evanston, IL 60208 USA. Indiana Univ, Bloomington, IN 47405 USA. Univ Notre Dame, Notre Dame, IN 46556 USA. Purdue Univ Calumet, Hammond, IN 46323 USA. Iowa State Univ, Ames, IA 50011 USA. Univ Kansas, Lawrence, KS 66045 USA. Kansas State Univ, Manhattan, KS 66506 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Univ Maryland, College Pk, MD 20742 USA. Boston Univ, Boston, MA 02215 USA. Northeastern Univ, Boston, MA 02115 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Univ Mississippi, University, MS 38677 USA. Univ Nebraska, Lincoln, NE 68588 USA. Princeton Univ, Princeton, NJ 08544 USA. SUNY Buffalo, Buffalo, NY 14260 USA. Columbia Univ, New York, NY 10027 USA. Univ Rochester, Rochester, NY 14627 USA. SUNY Stony Brook, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Langston Univ, Langston, OK 73050 USA. Univ Oklahoma, Norman, OK 73019 USA. Oklahoma State Univ, Stillwater, OK 74078 USA. Brown Univ, Providence, RI 02912 USA. Univ Texas, Arlington, TX 76019 USA. So Methodist Univ, Dallas, TX 75275 USA. Rice Univ, Houston, TX 77005 USA. Univ Virginia, Charlottesville, VA 22901 USA. Univ Washington, Seattle, WA 98195 USA. RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia. RI Mundim, Luiz/A-1291-2012; Yip, Kin/D-6860-2013; De, Kaushik/N-1953-2013; Fisher, Wade/N-4491-2013; Oguri, Vitor/B-5403-2013; Telford, Paul/B-6253-2011; Nomerotski, Andrei/A-5169-2010; Shivpuri, R K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; Leflat, Alexander/D-7284-2012; Dudko, Lev/D-7127-2012; Merkin, Mikhail/D-6809-2012; Novaes, Sergio/D-3532-2012; Alves, Gilvan/C-4007-2013; Deliot, Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Guo, Jun/O-5202-2015; Bargassa, Pedrame/O-2417-2016; OI Mundim, Luiz/0000-0001-9964-7805; Yip, Kin/0000-0002-8576-4311; De, Kaushik/0000-0002-5647-4489; Dudko, Lev/0000-0002-4462-3192; Novaes, Sergio/0000-0003-0471-8549; Sharyy, Viatcheslav/0000-0002-7161-2616; Guo, Jun/0000-0001-8125-9433; Bean, Alice/0000-0001-5967-8674; Bargassa, Pedrame/0000-0001-8612-3332; Fatakia, Sarosh/0000-0003-0430-3191; Belanger-Champagne, Camille/0000-0003-2368-2617 NR 23 TC 12 Z9 12 U1 0 U2 8 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 15 PY 2006 VL 97 IS 11 AR 111801 DI 10.1103/PhysRevLett.97.111801 PG 7 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600014 ER PT J AU Albright, BJ Yin, L Hegelich, BM Bowers, KJ Kwan, TJT Fernandez, JC AF Albright, B. J. Yin, L. Hegelich, B. M. Bowers, Kevin J. Kwan, T. J. T. Fernandez, J. C. TI Theory of laser acceleration of light-ion beams from interaction of ultrahigh-intensity lasers with layered targets SO PHYSICAL REVIEW LETTERS LA English DT Article ID PROTON-BEAMS AB Experiments at the LANL Trident facility demonstrated the production of monoenergetic ion beams from the interaction of an ultraintense laser with a target comprising a heavy ion substrate and thin layer of light ions. An analytic model is obtained that predicts how the mean energy and quality of monoenergetic ion beams and the energy of substrate ions vary with substrate material and light-ion layer composition and thickness. Dimensionless parameters controlling the dynamics are derived and the model is validated with particle-in-cell simulations and experimental data. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Albright, BJ (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Fernandez, Juan/H-3268-2011; OI Fernandez, Juan/0000-0002-1438-1815; Albright, Brian/0000-0002-7789-6525; Yin, Lin/0000-0002-8978-5320 NR 15 TC 60 Z9 60 U1 1 U2 3 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 15 PY 2006 VL 97 IS 11 AR 115002 DI 10.1103/PhysRevLett.97.115002 PG 4 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600031 PM 17025893 ER PT J AU Aubert, B Barate, R Bona, M Boutigny, D Couderc, F Karyotakis, Y Lees, JP Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Chen, JC Qi, ND Rong, G Wang, P Zhu, YS Eigen, G Ofte, I Stugu, B Abrams, GS Battaglia, M Brown, DN Button-Shafer, J Cahn, RN Charles, E Gill, MS Groysman, Y Jacobsen, RG Kadyk, JA Kerth, LT Kolomensky, YG Kukartsev, G Lynch, G Mir, LM Oddone, PJ Orimoto, TJ Pripstein, M Roe, NA Ronan, MT Wenzel, WA Sanchez, PD Barrett, M Ford, KE Harrison, TJ Hart, AJ Hawkes, CM Morgan, SE Watson, AT Goetzen, K Held, T Koch, H Lewandowski, B Pelizaeus, M Peters, K Schroeder, T Steinke, M Boyd, JT Burke, JP Cottingham, WN Walker, D Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Knecht, NS Mattison, TS McKenna, JA Khan, A Kyberd, P Saleem, M Sherwood, DJ Teodorescu, L Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Todyshev, KY Best, DS Bondioli, M Bruinsma, M Chao, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Mommsen, RK Roethel, W Stoker, DP Abachi, S Buchanan, C Foulkes, SD Gary, JW Long, O Shen, BC Wang, K Zhang, L Hadavand, HK Hill, EJ Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Kovalskyi, D Richman, JD 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 Dvoretskii, A Fang, F Hitlin, DG Narsky, I Piatenko, T Porter, FC Ryd, A Samuel, A Mancinelli, G Meadows, BT Sokoloff, MD Blanc, F Bloom, PC Chen, S Ford, WT Hirschauer, JF Kreisel, A Nauenberg, U Olivas, A Ruddick, WO Smith, JG Ulmer, KA Wagner, SR Zhang, J Chen, A Eckhart, EA Soffer, A Toki, WH Wilson, RJ Winklmeier, F Zeng, Q Altenburg, DD Feltresi, E Hauke, A Jasper, H Petzold, A Spaan, B Brandt, T 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Eckmann, R. Ritchie, J. L. Satpathy, A. Schilling, C. J. Schwitters, R. F. Izen, J. M. Lou, X. C. Ye, S. Bianchi, F. Gallo, F. Gamba, D. Bomben, M. Bosisio, L. Cartaro, C. Cossutti, F. Della Ricca, G. Dittongo, S. Lanceri, L. Vitale, L. Azzolini, V. Martinez-Vidal, F. Banerjee, Sw. Bhuyan, B. Brown, C. M. Fortin, D. Hamano, K. Kowalewski, R. Nugent, I. M. Roney, J. M. Sobie, R. J. Back, J. J. Harrison, P. F. Latham, T. E. Mohanty, G. B. Pappagallo, M. Band, H. R. Chen, X. Cheng, B. Dasu, S. Datta, M. Flood, K. T. Hollar, J. J. Kutter, P. E. Mellado, B. Mihalyi, A. Pan, Y. Pierini, M. Prepost, R. Wu, S. L. Yu, Z. Neal, H. CA BarBar Collaboration TI Observation of e(+)e(-) annihilation into the C=+1 hadronic final states rho(0)rho(0) and phi rho(0) SO PHYSICAL REVIEW LETTERS LA English DT Article ID BHABHA SCATTERING; ENERGIES AB We report the first observation of e(+)e(-) annihilation into states of positive C parity, namely, rho(0)rho(0) and phi rho(0). The two states are observed in the pi(+)pi(-)pi(+)pi(-) and K+K-pi(+)pi(-) final states, respectively, in a data sample of 225 fb(-1) collected by the BABAR experiment at the Positron-Electron Project II e(+)e(-) storage rings at energies near root s=10.58 GeV. The distributions of cos theta(*), where theta(*) is the center-of-mass polar angle of the phi meson or the forward rho(0) meson, suggest production by two-virtual-photon annihilation. We measure cross sections within the range vertical bar cos theta(*)vertical bar < 0.8 of sigma(e(+)e(-)->rho(0)rho(0))=20.7 +/- 0.7(stat)+/- 2.7(syst) fb and sigma(e(+)e(-)->phi rho(0))=5.7 +/- 0.5(stat)+/- 0.8(syst) fb. C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France. Univ Barcelona, Fac Fis, Dept ECM, E-08028 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. 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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, 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. Natl Inst Nucl & 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. 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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. 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. Phys Corpusculaire Lab, Clermont Ferrand, France. Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. Univ Basilicata, I-85100 Potenza, Italy. RP Aubert, B (reprint author), Phys Particules Lab, F-74941 Annecy Le Vieux, France. RI Di Lodovico, Francesca/L-9109-2016; Kolomensky, Yury/I-3510-2015; Lusiani, Alberto/A-3329-2016; Lusiani, Alberto/N-2976-2015; Roe, Natalie/A-8798-2012; Martinez Vidal, F*/L-7563-2014; Cavallo, Nicola/F-8913-2012; Oyanguren, Arantza/K-6454-2014; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Monge, Maria Roberta/G-9127-2012; Luppi, Eleonora/A-4902-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Lo Vetere, Maurizio/J-5049-2012; Morandin, Mauro/A-3308-2016; Della Ricca, Giuseppe/B-6826-2013; 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; 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; OI Di Lodovico, Francesca/0000-0003-3952-2175; Kolomensky, Yury/0000-0001-8496-9975; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Martinez Vidal, F*/0000-0001-6841-6035; Oyanguren, Arantza/0000-0002-8240-7300; Pappagallo, Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Egede, Ulrik/0000-0001-5493-0762; 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; Lo Vetere, Maurizio/0000-0002-6520-4480; Morandin, Mauro/0000-0003-4708-4240; Della Ricca, Giuseppe/0000-0003-2831-6982; 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; Peters, Klaus/0000-0001-7133-0662; Raven, Gerhard/0000-0002-2897-5323 NR 7 TC 7 Z9 7 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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CA BABAR Collaboration TI Measurement of the Spin of the Omega(-) Hyperon SO PHYSICAL REVIEW LETTERS LA English DT Article ID LIFETIME AB A measurement of the spin of the Omega(-) hyperon produced through the exclusive process Xi(0)(c)->Omega K--(+) is presented using a total integrated luminosity of 116 fb(-1) recorded with the BABAR detector at the e(+)e(-) asymmetric-energy B factory at SLAC. Under the assumption that the Xi(0)(c) has spin 1/2, the angular distribution of the Lambda from Omega(-)->Lambda K- decay is inconsistent with all half-integer Omega(-) spin values other than 3/2. Lower statistics data for the process Omega(0)(c)->Omega(-)pi(+) from a 230 fb(-1) sample are also found to be consistent with Omega(-) spin 3/2. If the Xi(0)(c) spin were 3/2, an Omega(-) spin of 5/2 could not be excluded. C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France. Univ Barcelona, Dept ECM, Fac Fis, E-08028 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, 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 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. Colorado State Univ, Ft Collins, CO 80523 USA. Univ Colorado, Boulder, CO 80309 USA. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany. Ecole Polytech, Lab Leprince Ringuet, 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-16145 Genoa, Italy. Univ Genoa, Ist Nazl Fis Nucl, I-16145 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. Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ Karlsruhe, Inst Expt Kernphys, D-76021 Karlsruhe, Germany. CNRS, IN2P3, Accelerateur Lineaire Lab, F-91898 Orsay, France. Univ Paris Sud 11, Ctr Sci Orsay, F-91898 Orsay, France. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Liverpool, Liverpool L69 7ZE, 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, Montreal, PQ H3C 3J7, Canada. Mt Holyoke Coll, S Hadley, MA 01075 USA. Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy. Univ Naples Federico II, Ist Nazl Fis Nucl, I-80126 Naples, Italy. NIKHEF H, 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, 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, Dipartimento Fis, Scuola Normale Super Pisa, I-56127 Pisa, Italy. Univ Pisa, 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 78713 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. 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 Aubert, B (reprint author), Phys Particules Lab, F-74941 Annecy Le Vieux, France. RI Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Lusiani, Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; bettarini, stefano/M-2502-2016; Pappagallo, Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Peters, Klaus/C-2728-2008; Lista, Luca/C-5719-2008; Roe, Natalie/A-8798-2012; 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; Negrini, Matteo/C-8906-2014; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Bellini, Fabio/D-1055-2009; Luppi, Eleonora/A-4902-2015 OI Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; 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; Egede, Ulrik/0000-0001-5493-0762; Peters, Klaus/0000-0001-7133-0662; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Bellini, Fabio/0000-0002-2936-660X; Luppi, Eleonora/0000-0002-1072-5633 NR 13 TC 12 Z9 12 U1 0 U2 16 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD SEP 15 PY 2006 VL 97 IS 11 AR 112001 DI 10.1103/PhysRevLett.97.112001 PG 7 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600015 ER PT J AU Hall, DM Lookman, T Fredrickson, GH Banerjee, S AF Hall, David M. Lookman, Turab Fredrickson, Glenn H. Banerjee, Sanjoy TI Hydrodynamic self-consistent field theory for inhomogeneous polymer melts SO PHYSICAL REVIEW LETTERS LA English DT Article ID BLOCK-COPOLYMER MELTS; DYNAMICS; FLUIDS AB We introduce a mesoscale technique for simulating the structure and rheology of block-copolymer melts and blends in hydrodynamic flows. The technique couples dynamic self-consistent field theory with continuum hydrodynamics and flow penalization to simulate polymeric fluid flows in channels of arbitrary geometry. We demonstrate the method by studying phase separation of an ABC triblock copolymer melt in a submicron channel with neutral wall wetting conditions. We find that surface wetting effects and shear effects compete, producing wall-perpendicular lamellae in the absence of flow and wall-parallel lamellae in cases where the shear rate exceeds some critical Weissenberg number. C1 Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA. Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA. RP Hall, DM (reprint author), Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. RI Hall, David/F-2342-2011; OI Hall, David/0000-0002-0961-1196; Hall, David/0000-0003-4663-2508; Lookman, Turab/0000-0001-8122-5671 NR 14 TC 14 Z9 14 U1 2 U2 12 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 15 PY 2006 VL 97 IS 11 AR 114501 DI 10.1103/PhysRevLett.97.114501 PG 4 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600029 PM 17025891 ER PT J AU Hoffmann, A Nieva, G Guimpel, J Bruynseraede, Y Santamaria, J Lederman, D Schuller, IK AF Hoffmann, A. Nieva, G. Guimpel, J. Bruynseraede, Y. Santamaria, J. Lederman, D. Schuller, Ivan K. TI Comment on "Photoemission study of YBa2Cu3Oy thin films under light illumination" SO PHYSICAL REVIEW LETTERS LA English DT Editorial Material ID PHOTOINDUCED SUPERCONDUCTIVITY; PERSISTENT PHOTOCONDUCTIVITY C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. Comis Nacl Energia Atom, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. Univ Nacl Cuyo, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. Katholieke Univ Leuven, Vaste Stof Fys Magnetisme Lab, B-3001 Louvain, Belgium. Univ Complutense Madrid, Dept Fis Aplicada 3, GFMC, E-28040 Madrid, Spain. W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA. Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. RP Hoffmann, A (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Hoffmann, Axel/A-8152-2009; Santamaria, Jacobo/N-8783-2016; OI Hoffmann, Axel/0000-0002-1808-2767; Santamaria, Jacobo/0000-0003-4594-2686; Guimpel, Julio/0000-0002-7528-7777 NR 15 TC 1 Z9 1 U1 0 U2 1 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 15 PY 2006 VL 97 IS 11 AR 119701 DI 10.1103/PhysRevLett.97.119701 PG 1 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600075 PM 17025937 ER PT J AU Rotureau, J Michel, N Nazarewicz, W Ploszajczak, M Dukelsky, J AF Rotureau, J. Michel, N. Nazarewicz, W. Ploszajczak, M. Dukelsky, J. TI Density matrix renormalization group approach for many-body open quantum systems SO PHYSICAL REVIEW LETTERS LA English DT Article ID RESONANT STATES; HE-3 DROPLETS AB The density matrix renormalization group (DMRG) approach is extended to complex-symmetric density matrices characteristic of many-body open quantum systems. Within the continuum shell model, we investigate the interplay between many-body configuration interaction and coupling to open channels in case of the unbound nucleus He-7. It is shown that the extended DMRG procedure provides a highly accurate treatment of the coupling to the nonresonant scattering continuum. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. CEA, DSM, CNRS, IN2P3,GANIL, F-14076 Caen, France. CSIC, Inst Estructura Mat, E-28006 Madrid, Spain. RP Rotureau, J (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RI rotureau, jimmy/B-2365-2013; Dukelsky, Jorge/I-1118-2015 OI Dukelsky, Jorge/0000-0002-7715-5487 NR 22 TC 38 Z9 38 U1 0 U2 3 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 15 PY 2006 VL 97 IS 11 AR 110603 DI 10.1103/PhysRevLett.97.110603 PG 4 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600012 PM 17025874 ER PT J AU Tsetseris, L Pantelides, ST AF Tsetseris, L. Pantelides, S. T. TI Oxygen migration, agglomeration, and trapping: Key factors for the morphology of the Si-SiO2 interface SO PHYSICAL REVIEW LETTERS LA English DT Article ID SILICON-OXIDE; OXIDATION; SI; ENERGETICS; GROWTH; ENERGY AB The measured activation energies for oxide growth rates at the initial and late stages of oxidation of Si are 2 and 1.2 eV, respectively. These values imply that oxidation can proceed at temperatures much smaller than the 800 degrees C normally used to obtain devices with exceptionally smooth Si-SiO2 interfaces. Here, we use first-principles calculations to identify the atomic-scale mechanisms of the 2 eV process and of additional processes with higher barriers that control the interface morphology and ultimately provide for smooth layer-by-layer oxide growth, as observed at high temperatures. C1 Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Tsetseris, L (reprint author), Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. NR 25 TC 32 Z9 32 U1 0 U2 48 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 15 PY 2006 VL 97 IS 11 AR 116101 DI 10.1103/PhysRevLett.97.116101 PG 4 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600044 PM 17025906 ER PT J AU Tulk, CA Hart, R Klug, DD Benmore, CJ Neuefeind, J AF Tulk, C. A. Hart, R. Klug, D. D. Benmore, C. J. Neuefeind, J. TI Adding a length scale to the polyamorphic ice debate SO PHYSICAL REVIEW LETTERS LA English DT Article ID DENSITY AMORPHOUS ICE; NEUTRON-DIFFRACTION; X-RAY; WATER; TRANSITION; PRESSURE; GLASSES; SOLIDS AB X-ray scattering and molecular dynamics simulations have been used to correlate the short range oxygen-oxygen structure with the intermediate range ordering (IRO) upon annealing very high density amorphous ice. While it is clear that the IRO that defines the network structure breaks down continuously to a minimum level, where there are weakened correlations extending beyond 7 A, at this point the local structure (O-O-O angles) is observed to change abruptly, allowing a continuous reemergence of a new IRO network. This is very different from a classic first order transition and helps reconcile previous data. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Argonne Natl Lab, Argonne, IL 60438 USA. Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada. RP Tulk, CA (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. RI Neuefeind, Joerg/D-9990-2015; Tulk, Chris/R-6088-2016; OI Neuefeind, Joerg/0000-0002-0563-1544; Tulk, Chris/0000-0003-3400-3878; Benmore, Chris/0000-0001-7007-7749 NR 28 TC 14 Z9 14 U1 1 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD SEP 15 PY 2006 VL 97 IS 11 AR 115503 DI 10.1103/PhysRevLett.97.115503 PG 4 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600037 PM 17025899 ER PT J AU Ungaro, M Stoler, P Aznauryan, I Burkert, VD Joo, K Smith, LC Adams, G Amarian, M Ambrozewicz, P Anghinolfi, M Asryan, G Audit, G Avakian, H Bagdasaryan, H Ball, JP Baltzell, NA Barrow, S Batourine, V Battaglieri, M Bedliski, I Bektasoglu, M Bellis, M Benmouna, N Berman, BL Biselli, AS Bonner, BE Bouchigny, S Boiarinov, S Bradford, R Branford, D Briscoe, WJ Brooks, WK Bultmann, S Butuceanu, C Calarco, JR Careccia, SL Carman, DS Cazes, A Chen, S Cole, PL Coltharp, P Cords, D Corvisiero, P Crabb, D Cummings, JP Sanctis, E DeVita, R Degtyarenko, PV Denizli, H Dennis, L Deur, A Dharmawardane, KV Djalali, C Dodge, GE Donnelly, J Doughty, D Dugger, M Dytman, S Dzyubak, OP Egiyan, H Egiyan, KS Elouadrhiri, L Eugenio, P Fatemi, R Fedotov, G Feldman, G Feuerbach, RJ Funsten, H Garcon, M Gavalian, G Gilfoyle, GP Giovanetti, KL Girod, FX Goetz, J Gordon, CIO Gothe, RW Griffioen, KA Guidal, M Guillo, M Guler, N Guo, L Gyurjyan, V Hadjidakis, C Hakobyan, RS Hardie, J Heddle, D Hersman, FW Hleiqawi, I Holtrop, M Hicks, K Hyde-Wright, CE Ilieva, Y Ireland, DG Ishkhanov, BS Ito, MM Jenkins, D Jo, HS Juengst, HG Kellie, JD Khandaker, M Kim, W Klein, A Klein, FJ Klimenko, AV Kossov, M Kramer, LH Kubarovsky, V Kuhn, J Kuhn, SE Lachniet, J Laget, JM Langheinrich, J Lawrence, D Lee, T Li, J Livingston, K Marchand, C Markov, N McAleer, S McKinnon, B McNabb, JWC Mecking, BA Mehrabyan, S Melone, JJ Mestayer, MD Meyer, CA Mikhailov, K Minehart, R Mirazita, M Miskimen, R Mokeev, V Morand, L Morrow, SA Mueller, J Mutchler, GS Napolitano, J Nasseripour, R Niccolai, S Niculescu, G Niculescu, I Niczyporuk, BB Niroula, M Niyazov, RA Nozar, M O'Rielly, GV Osipenko, M Ostrovidov, AI Park, K Pasyuk, E Philips, SA Pivnyuk, N Pocanic, D Pogorelko, O Polli, E Pozdniakov, S Preedom, BM Price, JW Prok, Y Protopopescu, D Qin, LM Raue, BA Riccardi, G Ricco, G Ripani, M Ritchie, BG Ronchetti, F Rosner, G Rossi, P Rubin, PD Sabatie, F Salgado, C Santoro, JP Sapunenko, V Schumacher, RA Serov, VS Sharabian, YG Skabelin, AV Smith, ES Sober, DI Stavinsky, A Stepanyan, SS Stepanyan, S Stokes, BE Strakovsky, II Strauch, S Taiuti, M Tedeschi, DJ Thoma, U Tkabladze, A Todor, L Tkachenko, S Tur, C Vineyard, MF Vlassov, AV Weinstein, LB Weygand, DP Williams, M Wolin, E Wood, MH Yegneswaran, A Zana, L Zhang, B Zhang, J Zhao, B AF Ungaro, M. Stoler, P. Aznauryan, I. Burkert, V. D. Joo, K. Smith, L. C. Adams, G. Amarian, M. Ambrozewicz, P. Anghinolfi, M. Asryan, G. Audit, G. Avakian, H. Bagdasaryan, H. Ball, J. P. Baltzell, N. A. Barrow, S. Batourine, V. Battaglieri, M. Bedliski, I. Bektasoglu, M. Bellis, M. Benmouna, N. Berman, B. L. Biselli, A. S. Bonner, B. E. Bouchigny, S. Boiarinov, S. Bradford, R. Branford, D. Briscoe, W. J. Brooks, W. K. Bultmann, S. Butuceanu, C. Calarco, J. R. Careccia, S. L. Carman, D. S. Cazes, A. Chen, S. Cole, P. L. Coltharp, P. Cords, D. Corvisiero, P. Crabb, D. Cummings, J. P. De Sanctis, E. DeVita, R. Degtyarenko, P. V. Denizli, H. Dennis, L. Deur, A. Dharmawardane, K. V. Djalali, C. Dodge, G. E. Donnelly, J. Doughty, D. Dugger, M. Dytman, S. Dzyubak, O. P. Egiyan, H. Egiyan, K. S. Elouadrhiri, L. Eugenio, P. Fatemi, R. Fedotov, G. Feldman, G. Feuerbach, R. J. Funsten, H. Garcon, M. Gavalian, G. Gilfoyle, G. P. Giovanetti, K. L. Girod, F. X. Goetz, J. Gordon, C. I. O. Gothe, R. W. Griffioen, K. A. Guidal, M. Guillo, M. Guler, N. Guo, L. Gyurjyan, V. Hadjidakis, C. Hakobyan, R. S. Hardie, J. Heddle, D. Hersman, F. W. Hleiqawi, I. Holtrop, M. Hicks, K. Hyde-Wright, C. E. Ilieva, Y. Ireland, D. G. Ishkhanov, B. S. Ito, M. M. Jenkins, D. Jo, H. S. Juengst, H. G. Kellie, J. D. Khandaker, M. Kim, W. Klein, A. Klein, F. J. Klimenko, A. V. Kossov, M. Kramer, L. H. Kubarovsky, V. Kuhn, J. Kuhn, S. E. Lachniet, J. Laget, J. M. Langheinrich, J. Lawrence, D. Lee, T. Li, Ji Livingston, K. Marchand, C. Markov, N. McAleer, S. McKinnon, B. McNabb, J. W. C. Mecking, B. A. Mehrabyan, S. Melone, J. J. Mestayer, M. D. Meyer, C. A. Mikhailov, K. Minehart, R. Mirazita, M. Miskimen, R. Mokeev, V. Morand, L. Morrow, S. A. Mueller, J. Mutchler, G. S. Napolitano, J. Nasseripour, R. Niccolai, S. Niculescu, G. Niculescu, I. Niczyporuk, B. B. Niroula, M. Niyazov, R. A. Nozar, M. O'Rielly, G. V. Osipenko, M. Ostrovidov, A. I. Park, K. Pasyuk, E. Philips, S. A. Pivnyuk, N. Pocanic, D. Pogorelko, O. Polli, E. Pozdniakov, S. Preedom, B. M. Price, J. W. Prok, Y. Protopopescu, D. Qin, L. M. Raue, B. A. Riccardi, G. Ricco, G. Ripani, M. Ritchie, B. G. Ronchetti, F. Rosner, G. Rossi, P. Rubin, P. D. Sabatie, F. Salgado, C. Santoro, J. P. Sapunenko, V. Schumacher, R. A. Serov, V. S. Sharabian, Y. G. Skabelin, A. V. Smith, E. S. Sober, D. I. Stavinsky, A. Stepanyan, S. S. Stepanyan, S. Stokes, B. E. Strakovsky, I. I. Strauch, S. Taiuti, M. Tedeschi, D. J. Thoma, U. Tkabladze, A. Todor, L. Tkachenko, S. Tur, C. Vineyard, M. F. Vlassov, A. V. Weinstein, L. B. Weygand, D. P. Williams, M. Wolin, E. Wood, M. H. Yegneswaran, A. Zana, L. Zhang, B. Zhang, J. Zhao, B. CA CLAS Collaboration TI Measurement of the N ->Delta (+)(1232) transition at high-momentum transfer by pi(0) electroproduction SO PHYSICAL REVIEW LETTERS LA English DT Article ID FORM-FACTORS; MODEL; RESONANCE; NUCLEON; GAMMA; Q(2) AB We report a new measurement of the exclusive electroproduction reaction gamma(*)p ->pi(0)p to explore the evolution from soft nonperturbative physics to hard processes via the Q(2) dependence of the magnetic (M1+), electric (E1+), and scalar (S1+) multipoles in the N ->Delta transition. 9000 differential cross section data points cover W from threshold to 1.4 GeV/c(2), 4 pi center-of-mass solid angle, and Q(2) from 3 to 6 GeV2/c(2), the highest yet achieved. It is found that the magnetic form factor G(M)(*) decreases with Q(2) more steeply than the proton magnetic form factor, the ratio E1+/M1+ is small and negative, indicating strong helicity nonconservation, and the ratio S1+/M1+ is negative, while its magnitude increases with Q(2). C1 Rensselaer Polytech Inst, Troy, NY 12180 USA. Univ Connecticut, Storrs, CT 06269 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Arizona State Univ, Tempe, AZ 85287 USA. Univ Calif Los Angeles, Los Angeles, CA 90095 USA. Calif State Univ Dominguez Hills, Carson, CA 90747 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Catholic Univ Amer, Washington, DC 20064 USA. CEA Saclay, Serv Phys Nucl, F-91191 Gif Sur Yvette, France. Christopher Newport Univ, Newport News, VA 23606 USA. Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. Florida Int Univ, Miami, FL 33199 USA. Florida State Univ, Tallahassee, FL 32306 USA. George Washington Univ, Washington, DC 20052 USA. Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. Idaho State Univ, Pocatello, ID 83209 USA. Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy. Ist Nazl Fis Nucl, Sez Girona, I-16146 Genoa, Italy. Inst Phys Nucl, F-91406 Orsay, France. Univ Bonn, Inst Strahlen & Kernphys, D-5300 Bonn, Germany. Inst Theoret & Expt Phys, Moscow 117259, Russia. James Madison Univ, Harrisonburg, VA 22807 USA. Kyungpook Natl Univ, Taegu 702701, South Korea. MIT, Cambridge, MA 02139 USA. Univ Massachusetts, Amherst, MA 01003 USA. Moscow MV Lomonosov State Univ, Gen Nucl Phys Inst, Moscow 119899, Russia. Univ New Hampshire, Durham, NH 03824 USA. Norfolk State Univ, Norfolk, VA 23504 USA. Ohio Univ, Athens, OH 45701 USA. Old Dominion Univ, Norfolk, VA 23529 USA. Univ Pittsburgh, Pittsburgh, PA 15260 USA. Rice Univ, Houston, TX 77005 USA. Univ Richmond, Richmond, VA 23173 USA. Univ S Carolina, Columbia, SC 29208 USA. Union Coll, Schenectady, NY 12308 USA. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. Univ Virginia, Charlottesville, VA 22901 USA. Coll William & Mary, Williamsburg, VA 23187 USA. Yerevan Phys Inst, Yerevan 375036, Armenia. RP Ungaro, M (reprint author), Rensselaer Polytech Inst, Troy, NY 12180 USA. RI Ishkhanov, Boris/E-1431-2012; Zhao, Bo/J-6819-2012; Brooks, William/C-8636-2013; Schumacher, Reinhard/K-6455-2013; Meyer, Curtis/L-3488-2014; Sabatie, Franck/K-9066-2015; Osipenko, Mikhail/N-8292-2015; Zhang, Jixie/A-1461-2016; Ireland, David/E-8618-2010; Bektasoglu, Mehmet/A-2074-2012; Protopopescu, Dan/D-5645-2012; riccardi, gabriele/A-9269-2012; Zana, Lorenzo/H-3032-2012 OI RIPANI, Maurizio/0000-0003-4450-8511; Hyde, Charles/0000-0001-7282-8120; Bellis, Matthew/0000-0002-6353-6043; Zhao, Bo/0000-0003-3171-5335; Brooks, William/0000-0001-6161-3570; Schumacher, Reinhard/0000-0002-3860-1827; Meyer, Curtis/0000-0001-7599-3973; Sabatie, Franck/0000-0001-7031-3975; Osipenko, Mikhail/0000-0001-9618-3013; Ireland, David/0000-0001-7713-7011; NR 32 TC 83 Z9 83 U1 1 U2 3 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 15 PY 2006 VL 97 IS 11 AR 112003 DI 10.1103/PhysRevLett.97.112003 PG 6 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600017 PM 17025879 ER PT J AU Wieczorek, S Chow, WW AF Wieczorek, Sebastian Chow, Weng W. TI Self-induced chaos in a single-mode inversionless laser SO PHYSICAL REVIEW LETTERS LA English DT Article ID CASCADE; TORUS; AMPLIFICATION; INTERFERENCE; TRANSITION AB A single-mode inversionless laser with a three-level phaseonium as an active medium can by itself exhibit complex nonlinear dynamics. Nonlinear interaction between two spectrally separated gain regions of the phaseonium and a lasing field gives rise to instabilities and chaotic self-pulsations of a type not observed in conventional lasers with population-inverted gain media. We calculate the bifurcation diagram and uncover multistability and a torus-doubling cascade in transition to chaos. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Wieczorek, S (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 24 TC 6 Z9 6 U1 0 U2 2 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 15 PY 2006 VL 97 IS 11 AR 113903 DI 10.1103/PhysRevLett.113903 PG 4 WC Physics, Multidisciplinary SC Physics GA 084PK UT WOS:000240545600026 PM 17025888 ER PT J AU Tuskan, GA DiFazio, S Jansson, S Bohlmann, J Grigoriev, I Hellsten, U Putnam, N Ralph, S Rombauts, S Salamov, A Schein, J Sterck, L Aerts, A Bhalerao, RR Bhalerao, RP Blaudez, D Boerjan, W Brun, A Brunner, A Busov, V Campbell, M Carlson, J Chalot, M Chapman, J Chen, GL Cooper, D Coutinho, PM Couturier, J Covert, S Cronk, Q Cunningham, R Davis, J Degroeve, S Dejardin, A Depamphilis, C Detter, J Dirks, B Dubchak, I Duplessis, S Ehlting, J Ellis, B Gendler, K Goodstein, D Gribskov, M Grimwood, J Groover, A Gunter, L Hamberger, B Heinze, B Helariutta, Y Henrissat, B Holligan, D Holt, R Huang, W Islam-Faridi, N Jones, S Jones-Rhoades, M Jorgensen, R Joshi, C Kangasjarvi, J Karlsson, J Kelleher, C Kirkpatrick, R Kirst, M Kohler, A Kalluri, U Larimer, F Leebens-Mack, J Leple, JC Locascio, P Lou, Y Lucas, S Martin, F Montanini, B Napoli, C Nelson, DR Nelson, C Nieminen, K Nilsson, O Pereda, V Peter, G Philippe, R Pilate, G Poliakov, A Razumovskaya, J Richardson, P Rinaldi, C Ritland, K Rouze, P Ryaboy, D Schmutz, J Schrader, J Segerman, B Shin, H Siddiqui, A Sterky, F Terry, A Tsai, CJ Uberbacher, E Unneberg, P Vahala, J Wall, K Wessler, S Yang, G Yin, T Douglas, C Marra, M Sandberg, G Van de Peer, Y Rokhsar, D AF Tuskan, G. A. DiFazio, S. Jansson, S. Bohlmann, J. Grigoriev, I. Hellsten, U. Putnam, N. Ralph, S. Rombauts, S. Salamov, A. Schein, J. Sterck, L. Aerts, A. Bhalerao, R. R. Bhalerao, R. P. Blaudez, D. Boerjan, W. Brun, A. Brunner, A. Busov, V. Campbell, M. Carlson, J. Chalot, M. Chapman, J. Chen, G. -L. Cooper, D. Coutinho, P. M. Couturier, J. Covert, S. Cronk, Q. Cunningham, R. Davis, J. Degroeve, S. Dejardin, A. dePamphilis, C. Detter, J. Dirks, B. Dubchak, I. Duplessis, S. Ehlting, J. Ellis, B. Gendler, K. Goodstein, D. Gribskov, M. Grimwood, J. Groover, A. Gunter, L. Hamberger, B. Heinze, B. Helariutta, Y. Henrissat, B. Holligan, D. Holt, R. Huang, W. Islam-Faridi, N. Jones, S. Jones-Rhoades, M. Jorgensen, R. Joshi, C. Kangasjarvi, J. Karlsson, J. Kelleher, C. Kirkpatrick, R. Kirst, M. Kohler, A. Kalluri, U. Larimer, F. Leebens-Mack, J. Leple, J. -C. Locascio, P. Lou, Y. Lucas, S. Martin, F. Montanini, B. Napoli, C. Nelson, D. R. Nelson, C. Nieminen, K. Nilsson, O. Pereda, V. Peter, G. Philippe, R. Pilate, G. Poliakov, A. Razumovskaya, J. Richardson, P. Rinaldi, C. Ritland, K. Rouze, P. Ryaboy, D. Schmutz, J. Schrader, J. Segerman, B. Shin, H. Siddiqui, A. Sterky, F. Terry, A. Tsai, C. -J. Uberbacher, E. Unneberg, P. Vahala, J. Wall, K. Wessler, S. Yang, G. Yin, T. Douglas, C. Marra, M. Sandberg, G. Van de Peer, Y. Rokhsar, D. TI The genome of black cottonwood, Populus trichocarpa (Torr. & Gray) SO SCIENCE LA English DT Article ID CINNAMYL ALCOHOL-DEHYDROGENASE; ARABIDOPSIS-THALIANA; HYBRID POPLAR; GENE-EXPRESSION; TRANSCRIPTIONAL REGULATORS; PHENYLPROPANOID METABOLISM; GRAVITATIONAL INDUCTION; LIGNIN BIOSYNTHESIS; RESISTANCE GENES; QUAKING ASPEN AB We report the draft genome of the black cottonwood tree, Populus trichocarpa. Integration of shotgun sequence assembly with genetic mapping enabled chromosome-scale reconstruction of the genome. More than 45,000 putative protein-coding genes were identified. Analysis of the assembled genome revealed a whole-genome duplication event; about 8000 pairs of duplicated genes from that event survived in the Populus genome. A second, older duplication event is indistinguishably coincident with the divergence of the Populus and Arabidopsis lineages. Nucleotide substitution, tandem gene duplication, and gross chromosomal rearrangement appear to proceed substantially more slowly in Populus than in Arabidopsis. Populus has more protein-coding genes than Arabidopsis, ranging on average from 1.4 to 1.6 putative Populus homologs for each Arabidopsis gene. However, the relative frequency of protein domains in the two genomes is similar. Overrepresented exceptions in Populus include genes associated with lignocellulosic wall biosynthesis, meristem development, disease resistance, and metabolite transport. C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Plant Sci, Knoxville, TN 37996 USA. W Virginia Univ, Dept Biol, Morgantown, WV 26506 USA. Umea Univ, Dept Plant Physiol, Umea Plant Sci Ctr, SE-90187 Umea, Sweden. Univ British Columbia, Michael Smith Labs, Vancouver, BC V6T 1Z4, Canada. Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada. Univ British Columbia, Dept Forest Sci, Vancouver, BC V6T 1Z4, Canada. US DOE, Joint Genome Inst, Walnut Creek, CA 94598 USA. Univ Ghent VIB, Dept Plant Syst Biol, B-9052 Ghent, Belgium. Genome Sci Ctr, Vancouver, BC V5Z 4S6, Canada. Swedish Univ Agr Sci, Dept Forest Genet & Plant Physiol, Umea Plant Sci Ctr, SE-90183 Umea, Sweden. Univ Henri Poincare, INRA Nancy, INRA, Tree Microbe Interact Unit, F-54280 Champenoux, France. Virginia Polytech Inst & State Univ, Dept Forestry, Blacksburg, VA 24061 USA. Michigan Technol Univ, Sch Forest Resources & Environm Sci, Biotechnol Res Ctr, Houghton, MI 49931 USA. Univ Toronto, Dept Cell & Syst Biol, Toronto, ON M5S 3B2, Canada. Penn State Univ, Dept Biol, Inst Mol Evolutionary Genet, University Pk, PA 16802 USA. Penn State Univ, Huck Inst Life Sci, University Pk, PA 16802 USA. CNRS, UMR 6098, F-13288 Marseille, France. Univ Aix Marseille 1, F-13288 Marseille, France. Univ Aix Marseille 2, F-13288 Marseille, France. Univ Georgia, Warnell Sch Forest Resources, Athens, GA 30602 USA. Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA. Univ Florida, Sch Forest Resources & Conservat, Inst Genet, Gainesville, FL 32611 USA. Univ Florida, Plant Mol & Cellular Biol Program, Gainesville, FL 32611 USA. INRA, Unit Forest Improvement Genet & Physiol, F-45166 Olivet, France. Univ Calif Berkeley, Ctr Integrat Genom, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA. Univ Arizona, Dept Plant Sci, Tucson, AZ 85721 USA. Purdue Univ, Dept Biol Sci, W Lafayette, IN 47907 USA. Stanford Univ, Sch Med, Stanford Human Genome Ctr, Palo Alto, CA 94305 USA. Stanford Univ, Sch Med, Dept Genet, Palo Alto, CA 94305 USA. US Forest Serv, Inst Forest Genet, USDA, Davis, CA 95616 USA. Fed Res Ctr Forests, A-1140 Vienna, Austria. Univ Helsinki, Inst Biotechnol, Plant Mol Biol Lab, FI-00014 Helsinki, Finland. Univ Helsinki, Dept Biol & Environm Sci, FI-00014 Helsinki, Finland. Univ Turku, Dept Biol, FI-20014 Turku, Finland. Texas A&M Univ, Dept Forest Sci, College Stn, TX 77843 USA. Texas A&M Univ, So Inst Forest Genet, USDA, Forest Serv, College Stn, TX 77843 USA. MIT, Whitehead Inst Biomed Res, Cambridge, MA 02142 USA. MIT, Dept Biol, Cambridge, MA 02142 USA. Univ Tennessee, Dept Mol Sci, Memphis, TN 38163 USA. Univ Tennessee, Ctr Excellence Genom & Bioinformat, Memphis, TN 38163 USA. US Forest Serv, So Inst Forest Genet, USDA, Saucier, MS 39574 USA. Univ Tubingen, D-72076 Tubingen, Germany. AlbaNova Univ Ctr, KTH, Dept Biotechnol, SE-10691 Stockholm, Sweden. RP Tuskan, GA (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA. EM gtk@ornl.gov RI dePamphilis, Claude/P-6652-2016; Pilate, Gilles/E-8784-2017; Douglas, Carl/B-1384-2013; Putnam, Nicholas/B-9968-2008; Coutinho, Pedro/C-4473-2008; Tsai, CJ/C-2450-2009; Pereda-Loth, Veronica/A-1296-2011; KALLURI, UDAYA/A-6218-2011; Tuskan, Gerald/A-6225-2011; Van de Peer, Yves/D-4388-2009; Pilate, Gilles/D-1666-2011; DUPLESSIS, SEBASTIEN/G-4150-2011; Jansson, Stefan/A-1119-2009; LEPLE, Jean-Charles/H-4210-2012; Holt, Robert/C-3303-2009; Henrissat, Bernard/J-2475-2012; Heinze, Berthold/A-8734-2011; Schmutz, Jeremy/N-3173-2013; Tang, Macy/B-9798-2014; Rombauts, Stephane/D-7640-2014; LEPLE, Jean charles/L-9604-2014; Kangasjarvi, Jaakko/A-3024-2015; Karlsson, Jan/E-7199-2015; Marra, Marco/B-5987-2008; Nieminen, Kaisa/N-9051-2015; Sterck, Lieven/A-9439-2016; CHALOT, Michel/A-1113-2012; Jones, Steven/C-3621-2009; Gunter, Lee/L-3480-2016 OI Nelson, David/0000-0003-0583-5421; Hamberger, Bjoern/0000-0003-1249-1807; KALLURI, UDAYA/0000-0002-5963-8370; Nilsson, Ove/0000-0002-1033-1909; Cronk, Quentin/0000-0002-4027-7368; Pilate, Gilles/0000-0003-4802-8849; Sterky, Fredrik/0000-0003-3281-8088; Boerjan, Wout/0000-0003-1495-510X; Jorgensen, Richard/0000-0002-0382-2371; Gribskov, Michael/0000-0002-1718-0242; Montanini, Barbara/0000-0002-5419-7975; Putnam, Nicholas/0000-0002-1315-782X; Tsai, CJ/0000-0002-9282-7704; Tuskan, Gerald/0000-0003-0106-1289; Van de Peer, Yves/0000-0003-4327-3730; Jansson, Stefan/0000-0002-7906-6891; Heinze, Berthold/0000-0002-7571-9138; Schmutz, Jeremy/0000-0001-8062-9172; Rombauts, Stephane/0000-0002-3985-4981; Kangasjarvi, Jaakko/0000-0002-8959-1809; Karlsson, Jan/0000-0002-6002-929X; Sterck, Lieven/0000-0001-7116-4000; Gunter, Lee/0000-0003-1211-7532 NR 79 TC 2021 Z9 2507 U1 29 U2 348 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD SEP 15 PY 2006 VL 313 IS 5793 BP 1596 EP 1604 DI 10.1126/science.1128691 PG 9 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 083YS UT WOS:000240498900035 PM 16973872 ER PT J AU Tenne, DA Bruchhausen, A Lanzillotti-Kimura, ND Fainstein, A Katiyar, RS Cantarero, A Soukiassian, A Vaithyanathan, V Haeni, JH Tian, W Schlom, DG Choi, KJ Kim, DM Eom, CB Sun, HP Pan, XQ Li, YL Chen, LQ Jia, QX Nakhmanson, SM Rabe, KM Xi, XX AF Tenne, D. A. Bruchhausen, A. Lanzillotti-Kimura, N. D. Fainstein, A. Katiyar, R. S. Cantarero, A. Soukiassian, A. Vaithyanathan, V. Haeni, J. H. Tian, W. Schlom, D. G. Choi, K. J. Kim, D. M. Eom, C. B. Sun, H. P. Pan, X. Q. Li, Y. L. Chen, L. Q. Jia, Q. X. Nakhmanson, S. M. Rabe, K. M. Xi, X. X. TI Probing nanoscale ferroelectricity by ultraviolet Raman spectroscopy SO SCIENCE LA English DT Article ID THIN-FILMS; PEROVSKITE FILMS; ULTRATHIN FILMS; SRTIO3; SUPERLATTICES; PHONONS; POLARIZATION; ENHANCEMENT; BATIO3 AB We demonstrated that ultraviolet Raman spectroscopy is an effective technique to measure the transition temperature (T-c) in ferroelectric ultrathin films and superlattices. We showed that one-unit-cell-thick BaTiO3 layers in BaTiO3/ SrTiO3 superlattices are not only ferroelectric (with T-c as high as 250 kelvin) but also polarize the quantum paraelectric SrTiO3 layers adjacent to them. T-c was tuned by similar to 500 kelvin by varying the thicknesses of the BaTiO3 and SrTiO3 layers, revealing the essential roles of electrical and mechanical boundary conditions for nanoscale ferroelectricity. C1 Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. Comis Nacl Energia Atom, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. Univ Puerto Rico, Dept Phys, Rio Piedras, PR 00931 USA. Univ Valencia, Inst Sci Mat, E-46071 Valencia, Spain. Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA. Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA. Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA. Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. RP Tenne, DA (reprint author), Boise State Univ, Dept Phys, 1910 Univ Dr, Boise, ID 83725 USA. EM dmitritenne@boisestate.edu RI Schlom, Darrell/J-2412-2013; Cantarero, Andres/F-6349-2013; Choi, Kyoung Jin/N-4662-2013; Nakhmanson, Serge/A-6329-2014; Tenne, Dmitri/C-3294-2009; Jia, Q. X./C-5194-2008; Chen, LongQing/I-7536-2012; Eom, Chang-Beom/I-5567-2014; Choi, Kyoung Jin/D-6941-2013; Lanzillotti Kimura, Norberto Daniel/C-2452-2008 OI Schlom, Darrell/0000-0003-2493-6113; Cantarero, Andres/0000-0003-1999-4933; Tenne, Dmitri/0000-0003-2697-8958; Chen, LongQing/0000-0003-3359-3781; Lanzillotti Kimura, Norberto Daniel/0000-0002-6056-5551 NR 27 TC 183 Z9 185 U1 20 U2 136 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD SEP 15 PY 2006 VL 313 IS 5793 BP 1614 EP 1616 DI 10.1126/science.1130306 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 083YS UT WOS:000240498900038 PM 16973874 ER PT J AU Whicker, JJ Pinder, JE Breshears, DD Eberhart, CF AF Whicker, Jeffrey J. Pinder, John E., III Breshears, David D. Eberhart, Craig F. TI From dust to dose: Effects of forest disturbance on increased inhalation exposure SO SCIENCE OF THE TOTAL ENVIRONMENT LA English DT Article DE wind erosion; environmental disturbance; dust; uranium; environmental contaminants ID WIND EROSION; SEMIARID SHRUBLAND; SOIL; REMEDIATION; MANAGEMENT; VEGETATION; COVER; SITE AB Ecosystem disturbances that remove vegetation and disturb surface soils are major causes of excessive soil erosion and can result in accelerated transport of soils contaminated with hazardous materials. Accelerated wind erosion in disturbed lands that are contaminated is of particular concern because of potential increased inhalation exposure, yet measurements regarding these relationships are lacking. The importance of this was highlighted when, in May of 2000, the Cerro Grande fire burned over roughly 30% of Los Alamos National Laboratory (LANL), mostly in ponderosa pine (Pinus ponderosa) forest, and through areas with soils containing contaminants, particularly excess depleted and natural uranium. Additionally, post-fire thinning was performed in burned and unburned forests on about 25% of LANL land. The first goal of this study was to assess the potential for increased inhalation dose from uranium contaminated soils via wind-driven resuspension of soil following the Cerro Grande Fire and subsequent forest thinning. This was done through analysis of post-disturbance measurements of uranium air concentrations and their relationships with wind velocity and seasonal vegetation cover. We found a 14% average increase in uranium air concentrations at LANL perimeter locations after the fire, and the greatest air concentrations occurred during the months of April-June when wind velocities are highest, no snow cover, and low vegetation cover. The second goal was to develop a methodology to assess the relative contribution of each disturbance type towards increasing public and worker exposure to these resuspended soils. Measurements of wind-driven dust flux in severely burned, moderately burned, thinned, and unburned/unthinned forest areas were used to assess horizontal dust flux (HDF) in these areas. Using empirically derived relationships between measurements of HDF and respirible dust, coupled with onsite uranium soil concentrations, we estimate relative increases in inhalation doses for workers ranging from 15% to 38%. Despite the potential for increased doses resulting from these forest disturbances, the estimated annual dose rate for the public was < 1 mu Sv yr(-1), which is far below the dose limits for public exposures, and the upper-bound dose rate for a LANL worker was estimated to be 140 mu Sv yr(-1), far below the 5 x 10(4) mu Sv yr(-1) occupational dose limit. These results show the importance of ecosystem disturbance in increasing mobility of soil-bound contaminants, which can ultimately increase exposure. However, it is important to investigate the magnitude of the increases when deciding appropriate strategies for management and long-term stewardship of contaminated lands. Published by Elsevier B.V. C1 Los Alamos Natl Lab, Hlth Phys Measurements Grp, Los Alamos, NM 87545 USA. Colorado State Univ, Dept Environm & Radiol Hlth Sci, Ft Collins, CO 80523 USA. Univ Arizona, Sch Nat Resources, Inst Study Planet Earth, Tucson, AZ 85721 USA. Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA. RP Whicker, JJ (reprint author), Los Alamos Natl Lab, Hlth Phys Measurements Grp, Mail Stop J573, Los Alamos, NM 87545 USA. EM jjwhicker@lanl.gov RI Breshears, David/B-9318-2009 OI Breshears, David/0000-0001-6601-0058 NR 48 TC 18 Z9 18 U1 0 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0048-9697 J9 SCI TOTAL ENVIRON JI Sci. Total Environ. PD SEP 15 PY 2006 VL 368 IS 2-3 BP 519 EP 530 DI 10.1016/j.scitotenv.2006.03.003 PG 12 WC Environmental Sciences SC Environmental Sciences & Ecology GA 080TG UT WOS:000240270700008 PM 16618498 ER PT J AU Sutter, E Sutter, P Zhu, Y AF Sutter, E. Sutter, P. Zhu, Y. TI Assembly and interaction of Au/C core-shell nanoparticles SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 23rd European Conference on Surface Science (ECOSS-23) CY SEP 04-09, 2005 CL Freie Univ, Berlin, GERMANY HO Freie Univ DE Au nanoparticles; crystalline carbon shell; self-assembly; nanoparticle interaction; nanoscale core-shell structures ID IRRADIATION; ONION AB The formation of Au/C core-shell structures from C-supported Au nanoparticles, and their thermally and electron beam induced interactions are studied by real-time TEM. At temperatures below 400 degrees C no C-shell is assembled, and closely spaced An nanoparticles interact by coalescence. At high temperatures (400-800 degrees C) the Au particles are transformed into Au/C core-shell structures via encapsulation into curved, fullerene-like C shells. The shells initially passivate the Au cores and inhibit their coalescence. But under electron irradiation, the Au cores can break free from their shells, and hence can coalesce. Surprisingly, at this stage the assembled C-sheets may actually enhance the coalescence process by driving the directed motion of Au/C particles and causing the efficient contraction of widely spaced particle ensembles. (c) 2006 Elsevier B.V. All rights reserved. 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 10 TC 8 Z9 8 U1 1 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD SEP 15 PY 2006 VL 600 IS 18 SI SI BP 3654 EP 3658 DI 10.1016/j.susc.2006.02.057 PG 5 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 097LZ UT WOS:000241450600030 ER PT J AU Schafer, J Hoinkis, M Schrupp, D Rotenberg, E Blaha, P Claessen, R AF Schaefer, J. Hoinkis, M. Schrupp, D. Rotenberg, Eli Blaha, P. Claessen, R. TI Electronic quasiparticles and evolution of Fermi level spin states in thin magnetic layers SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 23rd European Conference on Surface Science (ECOSS-23) CY SEP 04-09, 2005 CL Freie Univ, Berlin, GERMANY HO Freie Univ DE magnetic films; surface states; interfaces; photoemission; quasiparticles; spin waves; quantum well states ID QUANTUM-WELL STATES; RESOLVED PHOTOEMISSION; NEUTRON-SCATTERING; FERROMAGNETIC IRON; SURFACE-STATE; ENERGY; EXCITATIONS; FE(110); FILMS; FE AB Here we report on high-resolution photoemission of iron layers grown on a W(110) substrate. The evolution of the substrate states upon sub-monolayer adsorption of Fe atoms leads to a shift in surface state binding energy. For thicker (110) films, sharp metallic surface states are obtained. Their dispersion displays the signature of quasiparticle renormalization due to dressing with excitations. The energy scale is characteristic for the spin wave spectrum in iron, thereby giving evidence of electron-magnon coupling. Furthermore, it is found that quantum well states occur as a function of layer thickness. These modify the spin density of states at the Fermi level in the ferromagnetic film. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Vienna Univ Technol, Inst Mat Chem, A-1060 Vienna, Austria. Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany. RP Schafer, J (reprint author), Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany. EM joerg.schaefer@physik.uni-augsburg.de 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 30 TC 1 Z9 1 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 EI 1879-2758 J9 SURF SCI JI Surf. Sci. PD SEP 15 PY 2006 VL 600 IS 18 SI SI BP 3912 EP 3916 DI 10.1016/j.susc.2005.12.076 PG 5 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 097LZ UT WOS:000241450600080 ER PT J AU Galiana, N Martin, PP Munuera, C Varela, M Soria, F Ocal, C Ruiz, A Alonso, M AF Galiana, Natalia Martin, Pedro-Pablo Munuera, Carmen Varela, Maria Soria, Federico Ocal, Carmen Ruiz, Ana Alonso, Maria TI MBE fabrication of self-assembled Si and metal nanostructures on Si surfaces SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 23rd European Conference on Surface Science (ECOSS-23) CY SEP 04-09, 2005 CL Freie Univ, Berlin, GERMANY HO Freie Univ DE molecular beam epitaxy; self-assembly; nanostructures; Si(001); Si(111); Ag; Co; Fe ID MOLECULAR-BEAM EPITAXY; SCANNING-TUNNELING-MICROSCOPY; KINETIC GROWTH INSTABILITIES; SI(111) SURFACE; VICINAL SI(001); GE ISLANDS; CRYSTAL-GROWTH; STEPS; SUPERLATTICES; ORGANIZATION AB Two types of fairly regular distributions of Si nanostructures, of interest as templates to grow spatially controlled ensembles of metal (Co, Fe, Ag, etc.) nanostructures, are presented in this paper. Both of them are achieved by self-assembling processes during Si homoepitaxy. One corresponds to films grown by molecular beam epitaxy (MBE) on Si(001)-2 x 1 surfaces with low (< 1 degrees) miscut angles. In this case, arrays of 3D Si-islands displaying well defined pyramid-like shapes can be obtained, as evidenced by Scanning Force Microscopy (SFM) and Scanning Transmission Electron Microscopy (STEM). Such arrays exhibit strong similarities with those reported for Ge and SiGe islands on Si(001), and may thus serve as a simpler route to produce ordered distributions of metallic nanodots. On the other hand, on Si(111)-7 x 7 vicinal substrates misoriented 4 degrees toward the [11 (2) over bar] direction, step rearrangement during homoepitaxy permits to produce nanopatterned surfaces, the building-blocks of which are triangular (111) platforms, with lateral dimensions of hundreds of nanometers, bound by step bunches about 30 nm high. Furthermore, different Ag deposition experiments support this spontaneous patterning on Si(111) as a promising approach to achieve regular distributions of metallic nanocrystals with an overall homogeneity in sizes, shapes and spacing. (c) 2006 Elsevier B.V. All rights reserved. C1 CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain. Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN USA. RP Alonso, M (reprint author), CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain. EM malonso@icmm.csic.es RI SORIA, FEDERICO/B-1903-2010; Ruiz, Ana/B-2194-2010; Varela, Maria/H-2648-2012; Ocal, Carmen/G-8590-2013; Varela, Maria/E-2472-2014; Munuera, Carmen/J-9928-2014; Alonso, Maria/F-3163-2016 OI Ocal, Carmen/0000-0001-8790-8844; Varela, Maria/0000-0002-6582-7004; NR 50 TC 7 Z9 7 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD SEP 15 PY 2006 VL 600 IS 18 SI SI BP 3956 EP 3963 DI 10.1016/j.susc.2006.01.107 PG 8 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 097LZ UT WOS:000241450600089 ER PT J AU Chen, J Ratera, I Murphy, A Ogletree, DF Frechet, JMJ Salmeron, M AF Chen, J. Ratera, I. Murphy, A. Ogletree, D. F. Frechet, J. M. J. Salmeron, M. TI Friction-anisotropy dependence in organic self-assembled monolayers SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 23rd European Conference on Surface Science (ECOSS-23) CY SEP 04-09, 2005 CL Freie Univ, Berlin, GERMANY HO Freie Univ DE atomic force microscopy; self-assembled monolayer; friction anisotropy; lateral force; oligothiophene; mechanical properties; molecular orientation ID ATOMIC-FORCE MICROSCOPY; MECHANICAL-PROPERTIES; MICA; OLIGOTHIOPHENES; FILMS AB A study in order to understand the origin of the friction at the nanometer scale has been performed. Atomic force microscopy (AFM) has been used to measure the mechanical and frictional properties of self-assembled monolayers of the oligothiophene derivative 4-(5""-tetradecyl-[2,2';5' 2";5",2'";5'",2""] pentathiophen-5-yl)-butyric acid (C14-5TBA) on mica. The films were prepared by drop casting a dilute THF solution (1 mM) of the oligothiophene on mica. The molecules adsorb on mica through the carboxylic group, and expose the alkyl chain (CH(2))(13)CH(3). Instead of complete monolayers, islands were produced to facilitate measurements of the film height. By applying load to the tip a compression of the molecules from an initial height of 4.1 nm to a final height of 2.6 nm was achieved which we attribute to deformation of the alkyl chains. We previously observed that the oligothiophene derivative 4-(5""-decyl-[2,2';5',2";5",2'";5'",2""] pentathiophen-5-yl)-butyric acid (C10-5TBA), exhibits strong friction anisotropies showing different domains of friction. The topographic images for both of these films reveals that they form molecularly flat films. However, the longer alkyl chains of the C14-5TBA induces better organization of the molecules as shown by the lattice resolved AFM images obtained. Well-ordered molecular structures were seen with measured unit cell dimensions of 0.65 and 0.46 nm. The ability to resolve the lattice structure of these films allows us to measure friction in different lattice structure domains, and the results show strong friction anisotropy. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Ratera, I (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. EM iratera@icmab.es RI Ratera, Imma/E-2353-2014; Ogletree, D Frank/D-9833-2016; OI Ratera, Imma/0000-0002-1464-9789; Ogletree, D Frank/0000-0002-8159-0182; Frechet, Jean /0000-0001-6419-0163 NR 19 TC 16 Z9 16 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD SEP 15 PY 2006 VL 600 IS 18 SI SI BP 4008 EP 4012 DI 10.1016/j.susc.2005.12.078 PG 5 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 097LZ UT WOS:000241450600099 ER PT J AU Lee, HG Baek, IG Kim, S Vescovo, E AF Lee, H. -G. Baek, I. -G. Kim, S. Vescovo, E. TI Electronic and magnetic properties in Fe-based Fe1-xNix, Fe1-xCox, and Fe1-xVx films on W(110) SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 23rd European Conference on Surface Science (ECOSS-23) CY SEP 04-09, 2005 CL Freie Univ, Berlin, GERMANY HO Freie Univ DE Fe-based alloy film; structural transition; SRPES ID PHOTOEMISSION; ANISOTROPY; INTERFACE; SURFACE; ALLOYS; INSTABILITY; TRANSITION; W(001); ORDER; NI AB We investigate the correlation between the change of magnetic properties and structural transition for Fe-based alloy (Fe1-xNix, Fe1-xCox, and Fe1-xVx) films, which were grown on W(110) substrate. To clarify the correlation clearly among the electronic structure, magnetic properties, and structural transition as a function of alloy composition, we performed the spin-summed and resolved photoemission spectra (SSRPES) and low energy electron diffraction (LEED). (c) 2006 Elsevier B.V. All rights reserved. C1 Pohang Univ Sci & Technol, PAL, Beamline Res Div, Pohang 790784, South Korea. Korea Adv Inst Sci & Technol, Dept Chem, Taejon 305701, South Korea. Korea Adv Inst Sci & Technol, Sch Mol Sci, Taejon 305701, South Korea. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Lee, HG (reprint author), Korea Adv Inst Sci & Technol, Dept Chem, Taejon 305701, South Korea. EM easyscan@postech.ac.kr RI Kim, Sehun/C-1972-2011 NR 29 TC 4 Z9 4 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD SEP 15 PY 2006 VL 600 IS 18 SI SI BP 4137 EP 4142 DI 10.1016/j.susc.2006.01.134 PG 6 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 097LZ UT WOS:000241450600125 ER PT J AU Duo, L Brambilla, A Biagioni, P Finazzi, M Scholl, A Gweon, GH Graf, J Lanzara, A AF Duo, L. Brambilla, A. Biagioni, P. Finazzi, M. Scholl, A. Gweon, G. -H. Graf, J. Lanzara, A. TI Direct observation of magnetic instabilities in NiO thin films epitaxially grown on Fe(001) SO SURFACE SCIENCE LA English DT Article DE microscopies; X-ray absorption spectroscopy; iron; nickel; metal-oxide interfaces; magnetic interfaces ID THICKNESS DEPENDENCE; EXCHANGE BIAS; ANISOTROPY; TEMPERATURE; BEAMLINE; ELETTRA; LAYERS; MODEL; BACH AB We study, by means of X-ray magnetic linear dichroism (XMLD) and photoemission electron microscopy (PEEM), the magnetic instabilities in the NiO/Fe(001) system, as a function of the NiO film thickness. For NiO films thinner than a critical thickness of about 10 ML the NiO AFM moments align in-plane perpendicular to the Fe substrate magnetization. Just above the critical thickness the coupling turns out to be collinear. The behavior for very large NiO thicknesses (up to about 80 ML), studied by applying an external magnetic field, shows a complete reversal of the NiO domains, for a 90 degrees rotation of the substrate magnetization. Furthermore, a decreasing trend of the NiO XMLD signal as a function of the AFM film thickness is shown. These findings are discussed and tentatively explained in terms of defects occurring at the interface and/or in the NiO volume. (c) 2006 Elsevier B.V. All rights reserved. C1 Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Duo, L (reprint author), Politecn Milan, Dipartimento Fis, Piazza L Da Vinci 32, I-20133 Milan, Italy. EM lamberto.duo@fisi.polimi.it RI Biagioni, Paolo/A-9940-2011; Brambilla, Alberto/A-4393-2012; Duo, Lamberto/N-9311-2014; Scholl, Andreas/K-4876-2012; Finazzi, Marco/M-7401-2015 OI Biagioni, Paolo/0000-0003-4272-7040; Brambilla, Alberto/0000-0002-5593-317X; Finazzi, Marco/0000-0002-9197-3654 NR 33 TC 11 Z9 11 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 EI 1879-2758 J9 SURF SCI JI Surf. Sci. PD SEP 15 PY 2006 VL 600 IS 18 SI SI BP 4160 EP 4165 DI 10.1016/j.susc.2006.01.139 PG 6 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 097LZ UT WOS:000241450600130 ER PT J AU Qiu, WL Wunderlich, B AF Qiu, Wulin Wunderlich, Bernhard TI Reversible melting of high molar mass poly(oxyethylene) SO THERMOCHIMICA ACTA LA English DT Article DE crystal; glass transition; poly(oxyethylene); reversible melting; temperature-modulated differential scanning calorimetry (TMDSC) ID POLY(ETHYLENE OXIDE) FRACTIONS; DIFFERENTIAL SCANNING CALORIMETRY; TEMPERATURE-MODULATED CALORIMETRY; FOLDING CRYSTAL-GROWTH; POLY-ETHYLENE-OXIDE; HEAT-CAPACITY; THINNING PROCESSES; SINGLE-CRYSTALS; THERMODYNAMIC PROPERTIES; LINEAR MACROMOLECULES AB The heat capacity, C., of poly(oxyethylene), POE, with a molar mass of 900,000 Da, was analyzed by temperature-modulated differential scanning calorimetry, TMDSC. The high molar mass POE crystals are in a folded-chain macroconformation and show some locally reversible melting, starting already at about 250 K. At 335 K the thermodynamic heat capacity reaches the level of the melt. The end of melting of a high-crystallinity sample was analyzed quasi-isothennally with varying modulation amplitudes from 0.2 to 3.0 K to study the reversible crystallinity. A new internal calibration method was developed which allows to quantitatively assess small fractions of reversibly melting crystals in the presence of the reversible heat capacity and large amounts of irreversible melting. The specific reversibility decreases to small values in the vicinity of the end of melting, but does not seem to go to zero. The reversible melting is close to symmetric with a small fraction crystallizing slower than melting, i.e., under the chosen condition some of the melting and crystallization remains reversing. The collected data behave as one expects for a crystallization governed by molecular nucleation and not as one would expect from the formation of an intermediate mesophase on crystallization. The method developed allows a study of the active surface of melting and crystallization of flexible macromolecules. Published by Elsevier B.V. C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Wunderlich, B (reprint author), Baltusrol Rd, Knoxville, TN 37934 USA. EM Wunderlich@CharterTN.net NR 47 TC 9 Z9 9 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD SEP 15 PY 2006 VL 448 IS 2 BP 136 EP 146 DI 10.1016/j.tca.2006.07.005 PG 11 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA 091DM UT WOS:000241006500008 ER PT J AU Walters, RT Scogin, JH AF Walters, R. Tom Scogin, John H. TI A general initial decomposition reaction for complex metal hydrides SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article DE hydrogen storage material; alanates; mechanism ID REVERSIBLE HYDROGEN STORAGE; THERMAL-DECOMPOSITION; LIALH4; NAALH4 AB Alkali and alkaline complex metal hydrides appear to share the first step in their solid-state thermally activated decomposition mechanisms. This step is proposed to be the initial thermally activated non-equilibrium production of a binary alkali or alkaline hydride and a group IIIb metal hydride. The application of this initial thermochemical decomposition step to the data for several metal alanate compounds illustrates the potential generality of this approach. For LiAlH4, the decomposition data fall on the derived distribution plot calculated for NaAlH4. (c) 2005 Elsevier B.V. All rights reserved. C1 Savannah River Natl Lab, Aiken, SC 29808 USA. RP Walters, RT (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA. EM tom.walters@srnl.doe.gov NR 15 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-8388 J9 J ALLOY COMPD JI J. Alloy. Compd. PD SEP 14 PY 2006 VL 421 IS 1-2 BP 54 EP 56 DI 10.1016/j.jallcom.2005.10.070 PG 3 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 075HH UT WOS:000239874800011 ER PT J AU Sandrock, G Reilly, J Graetz, J Zhou, WM Johnson, J Wegrzyn, J AF Sandrock, Gary Reilly, James Graetz, Jason Zhou, Wei-Min Johnson, John Wegrzyn, James TI Alkali metal hydride doping of alpha-AIH(3) for enhanced H-2 desorption kinetics SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article DE metal hydride; alane; hydride doping; kinetics; hydrogen storage materials; mechanical alloying; scanning electron microscopy; X-ray diffraction ID DECOMPOSITION AB AlH3 can meet the gravimetric and volumetric targets for onboard vehicular hydrogen storage, but must be regenerated offboard. Doping of AlH3 with small levels of the alkali metal hydrides LiH, NaH and KH results in accelerated H-2 desorption rates at low temperature. The phenomenology of the doping process is discussed in terms of the formation of alanate windows for the transport of H-2 from the alane phase. It is shown that the alanate windows can be further doped with Ti to allow significant desorption of H-2 from AlH3 even at room temperature. (c) 2005 Elsevier B.V. All rights reserved. C1 Brookhaven Natl Lab, Dept Energy Sci & Technol, Upton, NY 11973 USA. Sandia Natl Labs, DOE, Davis, CA 95616 USA. RP Reilly, J (reprint author), Brookhaven Natl Lab, Dept Energy Sci & Technol, Upton, NY 11973 USA. EM jreillys@bnl.gov NR 9 TC 59 Z9 60 U1 5 U2 19 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-8388 J9 J ALLOY COMPD JI J. Alloy. Compd. PD SEP 14 PY 2006 VL 421 IS 1-2 BP 185 EP 189 DI 10.1016/j.jallcom.2005.09.081 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 075HH UT WOS:000239874800034 ER PT J AU Ismail, AE Grest, GS Stevens, MJ AF Ismail, Ahmed E. Grest, Gary S. Stevens, Mark J. TI Capillary waves at the liquid-vapor interface and the surface tension of water (vol 125, pg 014702, 2006) SO JOURNAL OF CHEMICAL PHYSICS LA English DT Correction C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Ismail, AE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM aei@alum.mit.edu RI Ismail, Ahmed/B-7790-2009 OI Ismail, Ahmed/0000-0001-9929-5598 NR 1 TC 1 Z9 1 U1 1 U2 8 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 14 PY 2006 VL 125 IS 10 AR 109902 DI 10.1063/1.2348985 PG 1 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 083ZK UT WOS:000240500700049 ER PT J AU Leng, YS Cummings, PT AF Leng, Yongsheng Cummings, Peter T. TI Shear dynamics of hydration layers SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID AQUEOUS-ELECTROLYTE SOLUTIONS; MOLECULARLY THIN-LAYERS; MICA SURFACES; LIQUID-FILMS; SUBNANOMETER FILMS; SOLID-SURFACES; WATER; FORCES; SIMULATION; SLIP AB Molecular dynamics (MD) simulations have been performed to investigate the shear dynamics of hydration layers of the thickness of D=0.61-2.44 nm confined between two mica surfaces. Emphases are placed on the external shear response and internal relaxation properties of aqueous films. For D=0.92-2.44 nm liquid phase, the shear responses are fluidic and similar to those observed in surface force balance experiments [U. Raviv and J. Klein, Science 297, 1540 (2002)]. However, for the bilayer ice (D=0.61 nm) [Y. S. Leng and P. T. Cummings, J. Chem. Phys. 124, 74711 (2006)] significant shear enhancement and shear thinning over a wide range of shear rates in MD regime are observed. The rotational relaxation time of water molecules in this bilayer ice is found to be as high as 0.017 ms (10(-5) s). Extrapolating the shear rate to the inverse of this longest relaxation time, we obtain a very high shear viscosity for the bilayer ice, which is also observed quite recently for D <= 0.6 +/- 0.3 nm hydration layers [H. Sakuma , Phys. Rev. Lett. 96, 46104 (2006)]. We further investigate the boundary slip of water molecules and hydrated K+ ions and concluded that no-slip boundary condition should hold for aqueous salt solution under extreme confinement between hydrophilic mica surfaces, provided that the confined film is of Newtonian fluid. (c) 2006 American Institute of Physics. C1 Vanderbilt Univ, Dept Chem Engn, Nashville, TN 37235 USA. Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Nanomat Theory Inst, Oak Ridge, TN 37831 USA. RP Leng, YS (reprint author), Vanderbilt Univ, Dept Chem Engn, Nashville, TN 37235 USA. EM yongsheng.leng@vanderbilt.edu RI Cummings, Peter/B-8762-2013 OI Cummings, Peter/0000-0002-9766-2216 NR 59 TC 26 Z9 26 U1 0 U2 14 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 14 PY 2006 VL 125 IS 10 AR 104701 DI 10.1063/1.2335844 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 083ZK UT WOS:000240500700034 PM 16999542 ER PT J AU Striolo, A McCabe, C Cummings, PT AF Striolo, Alberto McCabe, Clare Cummings, Peter T. TI Organic-inorganic telechelic molecules: Solution properties from simulations SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID POLYHEDRAL OLIGOMERIC SILSESQUIOXANES; LAYERED SILICATE NANOCOMPOSITES; DYNAMICS SIMULATION; AMORPHOUS POLYMERS; CARBON NANOTUBES; POSS COPOLYMERS; FORCE-FIELD; HYBRID; OLIGOSILSESQUIOXANE; CRYSTALLIZATION AB We report molecular dynamics simulations for telechelic molecules composed of two polyhedral oligomeric silsesquioxane (POSS) cages connected by one hydrocarbon backbone dissolved in liquid normal hexane. Silsesquioxanes are novel hybrid organic-inorganic molecules that are useful as building blocks for the synthesis of nanostructured materials. By including POSS molecules within a polymeric material it is possible to modify mechanical properties such as resistance to heat and glass transition temperatures. Unfortunately, the molecular mechanisms responsible for these enhancements are at present not completely understood. In an effort to elucidate the molecular phenomena responsible for these effects, we have studied the conformation of telechelic POSS molecules in solution, as well as their self-diffusion coefficients, as a function of the length of the hydrocarbon backbone. We focus on molecules in which the radius of gyration of the alkane backbone is comparable to the size of the silsesquioxane cages. Our results indicate that the backbone has a significant influence on both the equilibrium and the transport properties of dissolved telechelic hybrid molecules. These observations are useful for developing strategies to direct the self-assembly of nanostructured materials. (c) 2006 American Institute of Physics. C1 Univ Oklahoma, Sch Chem Biol & Mat Engn, Norman, OK 73019 USA. Vanderbilt Univ, Dept Chem Engn, Nashville, TN 37235 USA. Oak Ridge Natl Lab, Nanomat Theory Inst, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Striolo, A (reprint author), Univ Oklahoma, Sch Chem Biol & Mat Engn, Norman, OK 73019 USA. EM astriolo@ou.edu RI Striolo, Alberto/G-2926-2011; McCabe, Clare/I-8017-2012; Cummings, Peter/B-8762-2013 OI McCabe, Clare/0000-0002-8552-9135; Cummings, Peter/0000-0002-9766-2216 NR 58 TC 13 Z9 13 U1 0 U2 10 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 14 PY 2006 VL 125 IS 10 AR 104904 DI 10.1063/1.2348641 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 083ZK UT WOS:000240500700039 PM 16999547 ER PT J AU Weber, V Challacombe, M AF Weber, Valery Challacombe, Matt TI Parallel algorithm for the computation of the Hartree-Fock exchange matrix: Gas phase and periodic parallel ONX SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID LINEAR SCALING COMPUTATION; SELF-CONSISTENT-FIELD; ELECTRONIC-STRUCTURE THEORY; FAST MULTIPOLE METHOD; DENSITY-MATRIX; DIRECT SCF; VECTOR MULTIPLICATION; NUMERICAL-INTEGRATION; COULOMB MATRIX; GAMMA-POINT AB In this paper we present an efficient parallelization of the ONX algorithm for linear computation of the Hartree-Fock exchange matrix [J. Chem. Phys. 106, 9708 (1997)]. The method used is based on the equal time (ET) partitioning recently introduced [J. Chem. Phys. 118, 9128 (2003)] and [J. Chem. Phys. 121, 6608 (2004)]. ET exploits the slow variation of the density matrix between self-consistent-field iterations to achieve load balance. The method is presented and some benchmark calculations are discussed for gas phase and periodic systems with up to 128 processors. The current parallel ONX code is able to deliver up to 77% overall efficiency for a cluster of 50 water molecules on 128 processors (2.56 processors per heavy atom) and up to 87% for a box of 64 water molecules (two processors per heavy atom) with periodic boundary conditions. (c) 2006 American Institute of Physics. C1 Univ Fribourg, Dept Chem, CH-1700 Fribourg, Switzerland. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Weber, V (reprint author), Univ Fribourg, Dept Chem, CH-1700 Fribourg, Switzerland. EM valeryw@lanl.gov NR 50 TC 9 Z9 9 U1 2 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 14 PY 2006 VL 125 IS 10 AR 104110 DI 10.1063/1.2222359 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 083ZK UT WOS:000240500700010 PM 16999518 ER PT J AU Miller, JA Klippenstein, SJ AF Miller, James A. Klippenstein, Stephen J. TI Master equation methods in gas phase chemical kinetics SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID PLUS O-2 REACTIONS; PHENOMENOLOGICAL RATE COEFFICIENTS; INTERMOLECULAR ENERGY-TRANSFER; CHANNEL UNIMOLECULAR REACTIONS; INITIO MO/VRRKM CALCULATIONS; PRODUCT BRANCHING RATIOS; TRANSITION-STATE THEORY; TOTAL RATE-CONSTANT; LOW-PRESSURE-LIMIT; MULTIPLE-WELL AB In this article, we discuss the application of master equation methods to problems in gas phase chemical kinetics. The focus is on reactions that take place over multiple, interconnected potential wells and on the dissociation of weakly bound free radicals. These problems are of paramount importance in combustion chemistry. To illustrate specific points, we draw on our experience with reactions we have studied previously. C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Miller, JA (reprint author), Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. EM jamille@sandia.gov OI Klippenstein, Stephen/0000-0001-6297-9187 NR 93 TC 162 Z9 163 U1 2 U2 65 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD SEP 14 PY 2006 VL 110 IS 36 BP 10528 EP 10544 DI 10.1021/jp062693x PG 17 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 081PR UT WOS:000240330000002 PM 16956234 ER PT J AU Laskin, A Wang, H Robertson, WH Cowin, JP Ezell, MJ Finlayson-Pitts, BJ AF Laskin, Alexander Wang, Hai Robertson, William H. Cowin, James P. Ezell, Michael J. Finlayson-Pitts, Barbara J. TI A new approach to determining gas-particle reaction probabilities and application to the heterogeneous reaction of deliquesced sodium chloride particles with gas-phase hydroxyl radicals SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID SEA-SALT AEROSOL; AIR-WATER-INTERFACE; SCANNING-ELECTRON-MICROSCOPY; X-RAY-MICROANALYSIS; AIR/WATER INTERFACE; EMISSIONS INVENTORY; MOLECULAR-DYNAMICS; NITRIC-ACID; TROPOSPHERIC CHEMISTRY; ATMOSPHERIC PARTICLES AB The reaction kinetics for gaseous hydroxyl radicals (OH) with deliquesced sodium chloride particles (NaCl(aq)) were investigated using a novel experimental approach. The technique utilizes the exposure of substrate-deposited aerosol particles to reactive gases followed by chemical analysis of the particles using computer-controlled scanning electron microscopy with energy-dispersive analysis of X-rays (CCSEM/EDX) capability. Experiments were performed at room temperature and atmospheric pressure with deliquesced NaCl particles in the micron size range at 70 - 80% RH and with OH concentrations in the range of 1 to 7 x 10(9) cm(-3). The apparent, pseudo first-order rate constant for the reaction was determined from measurements of changes in the chloride concentration of individual particles upon reaction with OH as a function of the particle loading on the substrate. Quantitative treatment of the data using a model that incorporates both diffusion and reaction kinetics yields a lower limit to the net reaction probability of gamma(net) >= 0.1, with an overall uncertainty of a factor of 2. C1 Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA. Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. RP Laskin, A (reprint author), Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. EM Alexander.Laskin@pnl.gov RI Wang, Hai/A-1292-2009; Laskin, Alexander/I-2574-2012 OI Wang, Hai/0000-0001-6507-5503; Laskin, Alexander/0000-0002-7836-8417 NR 85 TC 37 Z9 38 U1 1 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD SEP 14 PY 2006 VL 110 IS 36 BP 10619 EP 10627 DI 10.1021/jp063263+ PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 081PR UT WOS:000240330000012 PM 16956244 ER PT J AU Funston, AM Silverman, EE Schanze, KS Miller, JR AF Funston, Alison M. Silverman, Eric E. Schanze, Kirk S. Miller, John R. TI Spectroscopy and transport of the triplet exciton in a terthiophene end-capped poly(phenylene ethynylene) SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID DIFFUSION-LIMITED REACTIONS; CONJUGATED POLYMER-CHAINS; PULSE-RADIOLYSIS; ENERGY-TRANSFER; LOWEST SINGLET; OLIGO(1,4-PHENYLENE ETHYNYLENE)S; ABSORPTION-SPECTROSCOPY; ALPHA-OLIGOTHIOPHENES; AROMATIC-HYDROCARBONS; OPTICAL-ABSORPTION AB Triplet states of poly(phenylene ethynylene), (PPE)-P-3*, not easily formed by direct photoexcitation, were produced by pulse radiolysis in toluene, along with triplet states of T3PPE having terthiophene end-caps. Intense triplet-triplet absorption maxima, (is an element of 680)((PPE)-P-3*) 9.5 x 10(4) M-1 cm(-1) and (is an element of 780)((T3PPE)-T-3*)) 2.8 x 10(4) M-1 cm(-1) enable identification of these two species, which have triplet energies of 2.12 and 1.77 eV determined in bimolecular energy transfer equilibria. Bleaching of ground-state absorption measures (PPE)-P-3* to be the delocalized over a 1.8-nm length. Triplet states formed in the PPE chains were transported to and trapped by the end caps in a time << 5 ns. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Univ Florida, Dept Chem, Gainesville, FL 32611 USA. RP Miller, JR (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM jrmiller@bnl.gov RI Funston, Alison/B-8817-2012; Schanze, Kirk/A-7200-2009 OI Funston, Alison/0000-0002-4320-6434; Schanze, Kirk/0000-0003-3342-4080 NR 72 TC 13 Z9 13 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD SEP 14 PY 2006 VL 110 IS 36 BP 17736 EP 17742 DI 10.1021/jp061114l PG 7 WC Chemistry, Physical SC Chemistry GA 081TT UT WOS:000240340600007 PM 16956256 ER PT J AU Bratlie, KM Kliewer, CJ Somorjai, GA AF Bratlie, Kaitlin M. Kliewer, Christopher J. Somorjai, Gabor A. TI Structure effects of benzene hydrogenation studied with sum frequency generation vibrational spectroscopy and kinetics on Pt(111) and Pt(100) single-crystal surfaces SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID ADSORPTION; CYCLOHEXENE; SYSTEM; DEHYDROGENATION; INTERMEDIATE; PRINCIPLES; PLATINUM; PYRIDINE; SPECTRA; TOLUENE AB Sum frequency generation (SFG) surface vibrational spectroscopy and kinetic measurements using gas chromatography have identified at least two reaction pathways for benzene hydrogenation on the Pt(100) and Pt(111) single-crystal surfaces at Torr pressures. Kinetic studies at low temperatures (310-370 K) show that benzene hydrogenation does not proceed through cyclohexene. A Langmuir-Hinshelwood-type rate law for the low-temperature reaction pathway is identified. The rate-determining step for this pathway is the addition of the first hydrogen atom to adsorbed benzene for both single-crystal surfaces, which is verified by the spectroscopic observation of adsorbed benzene at low temperatures on both the Pt(100) and Pt(111) crystal faces. Low-temperature SFG studies reveal chemisorbed and physisorbed benzene on both surfaces. At higher temperatures (370-440 K), hydrogenation of benzene to pi-allyl c-C6H9 is observed only on the Pt(100) surface. Previous single-crystal studies have identified pi-allyl c-C6H9 as the rate- determining step for cyclohexene hydrogenation to cyclohexane. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Somorjai, GA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM somorjai@socrates.berkeley.edu RI Bratlie, Kaitlin/A-1133-2009; Kliewer, Christopher/E-4070-2010 OI Kliewer, Christopher/0000-0002-2661-1753 NR 31 TC 50 Z9 51 U1 5 U2 46 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD SEP 14 PY 2006 VL 110 IS 36 BP 17925 EP 17930 DI 10.1021/jp062623q PG 6 WC Chemistry, Physical SC Chemistry GA 081TT UT WOS:000240340600034 PM 16956283 ER PT J AU Cohen, JS AF Cohen, James S. TI Reactive collisions of atomic antihydrogen with the H-2 and H-2(+) molecules SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID OPPENHEIMER POTENTIAL-ENERGY; NEGATIVE MUONS; CROSS-SECTIONS; BOUND-STATES; HYDROGEN; CAPTURE; ANTIPROTON; SCATTERING; APPROXIMATION; ANNIHILATION AB The fermion molecular dynamics (FMD) method is used to determine the protonium (Pn) formation and total destruction cross sections for collisions of antihydrogen ((H) over bar) with the H-2 molecule and the H-2(+) molecular ion at collision energies above 0.1 au in the centre-of-mass system. The cross sections and initial quantum numbers are compared with the analogous cross sections for (H) over bar + H, (p) over bar + H, (p) over bar + H-2 and (p) over bar + H-2(+) previously calculated. Like the (p) over bar projectile, the protonium-formation cross sections for the (H) over bar projectile are much larger and extend to higher energies with the molecular targets than with the atomic target. The possibility is considered that a relatively long-lived state of the (H) over barH molecule may be formed in rearrangement scattering of (H) over bar + H-2 at low energies. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Cohen, JS (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. EM cohen@lanl.gov NR 35 TC 6 Z9 6 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-4075 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD SEP 14 PY 2006 VL 39 IS 17 BP 3561 EP 3574 DI 10.1088/0953-4075/39/17/013 PG 14 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 083XE UT WOS:000240490700016 ER PT J AU Lee, TG AF Lee, Teck-Ghee TI Low-energy single electron capture, target excitation and ionization in He2++Na(3s) collisions SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID STURMIAN-PSEUDOSTATE APPROACH; CHARGE-TRANSFER; ATOMS AB Extensive semiclassical atomic orbitals close-coupling calculations have been performed to investigate single electron capture, excitation and ionization cross sections for He2+ + Na(3s) collisions from 2 to 20 keV u(-1). Special attention was paid to transition channels where significant discrepancies among theories and experiments were reported in this energy region. The stability of the calculated inelastic cross sections with respect to the choice of basis functions has been examined. The present calculations for single electron capture, target excitation and ionization cross sections are found to be in good agreement with existing experimental data, as well as with previous theoretical calculations. In particular, the total ionization and partial electron capture cross sections into n = 2, 3, 4 and n >= 5 shells are in excellent agreement with the recent experimental measurements performed using the MOTRIMS technique (Knoop et al 2005 J. Phys. B: At. Mol. Opt. Phys. 38 1987). C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. RP Lee, TG (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA. EM leetg@ornl.gov RI Lee, Teck Ghee/D-5037-2012 OI Lee, Teck Ghee/0000-0001-9472-3194 NR 16 TC 1 Z9 1 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-4075 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD SEP 14 PY 2006 VL 39 IS 17 BP 3665 EP 3678 DI 10.1088/0953-4075/39/17/022 PG 14 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 083XE UT WOS:000240490700025 ER PT J AU Chen, IC Chen, LH Orme, C Quist, A Lal, R Jin, SH AF Chen, I-Chen Chen, Li-Han Orme, Christine Quist, Arjan Lal, Ratnesh Jin, Sungho TI Fabrication of high-aspect-ratio carbon nanocone probes by electron beam induced deposition patterning SO NANOTECHNOLOGY LA English DT Article ID ATOMIC-FORCE MICROSCOPE; TIPS; RESOLUTION; GROWTH; LITHOGRAPHY; CANTILEVERS; NANOTUBES; DEVICES; FIELD AB A high-aspect-ratio cone-shaped carbon nanotube (CNT), which we refer to as a carbon nanocone (CNC), was fabricated for scanning probe microscopy (SPM) by a novel and reliable patterning technique and dc plasma chemical vapour deposition. Carbon dots from electron beam induced deposition (EBID) were utilized as convenient chemical-etch masks to create catalyst patterns for the growth of a single CNC probe on a tipless cantilever and an array of CNC probes on a silicon substrate. This resist-free EBID process is an efficient way of preparing a patterned catalyst and resultant nanoprobe on the specific edge location of the cantilever. The CNC probe produces high-resolution images of specimens in air as well as in liquid. No degradation in imaging performance was observed after a period of continuous scanning. The CNC bed-of-nails array imaged in contact mode by a commercial Si3N4 probe demonstrates the mechanical toughness/sturdiness of the CNC tip. This also indicates the possibility of using the CNC bed-of-nails as a convenient means for the characterization of SPM tips. C1 Univ Calif San Diego, La Jolla, CA 92093 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Calif Santa Barbara, Neurosci Res Inst, Santa Barbara, CA 93106 USA. RP Jin, SH (reprint author), Univ Calif San Diego, La Jolla, CA 92093 USA. EM jin@ucsd.edu RI Quist, Arjan/F-7997-2011; Orme, Christine/A-4109-2009 NR 30 TC 34 Z9 34 U1 2 U2 12 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0957-4484 J9 NANOTECHNOLOGY JI Nanotechnology PD SEP 14 PY 2006 VL 17 IS 17 BP 4322 EP 4326 DI 10.1088/0957-4484/17/17/007 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 077GX UT WOS:000240018200007 ER PT J AU Balakirev, FF Betts, J Boebinger, GS Tsukada, I Ando, Y AF Balakirev, Fedor F. Betts, Jon Boebinger, Gregory S. Tsukada, I. Ando, Yoichi TI Magneto-transport in LSCO high-T-c superconducting thin films SO NEW JOURNAL OF PHYSICS LA English DT Article ID NORMAL-STATE; LA2-XSRXCUO4; CROSSOVER AB We report a crossover from insulating to metallic behaviour near optimal doping in high-T-c thin films of La2-xSrxCuO4 (LSCO) using pulsed magnetic fields to suppress superconductivity and reveal the normal state magneto-transport in the zero temperature limits. The thin film data supports the same key findings reported on LSCO single crystals: (i) that the crossover from insulating to metallic behaviour occurs near optimal doping, and (ii) that the insulating behaviour is characterized by an unusual logarithmic divergence of the resistivity as the temperature approaches zero. A new finding is that the Hall density exhibits a sudden increase at the same Sr doping level at which the insulator-to-metal crossover occurs, possibly indicating a sharp change in the Fermi surface at optimum doping. C1 Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. Cent Res Inst Elect Power Ind, Tokyo 201, Japan. RP Balakirev, FF (reprint author), Los Alamos Natl Lab, Natl High Magnet Field Lab, POB 1663, Los Alamos, NM 87545 USA. EM gsb@magnet.fsu.edu RI Ando, Yoichi/B-8163-2013 OI Ando, Yoichi/0000-0002-3553-3355 NR 6 TC 6 Z9 6 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD SEP 14 PY 2006 VL 8 AR 194 DI 10.1088/1367-2630/8/9/194 PG 7 WC Physics, Multidisciplinary SC Physics GA 084AM UT WOS:000240503900005 ER PT J AU Hiskett, PA Rosenberg, D Peterson, CG Hughes, RJ Nam, S Lita, AE Miller, AJ Nordholt, JE AF Hiskett, P. A. Rosenberg, D. Peterson, C. G. Hughes, R. J. Nam, S. Lita, A. E. Miller, A. J. Nordholt, J. E. TI Long-distance quantum key distribution in optical fibre SO NEW JOURNAL OF PHYSICS LA English DT Article ID STANDARD TELECOM FIBER; PRIVACY AMPLIFICATION; CRYPTOGRAPHY AB Use of low-noise detectors can both increase the secret bit rate of long-distance quantum key distribution (QKD) and dramatically extend the length of a fibre optic link over which secure keys can be distributed. Previous work has demonstrated the use of ultra-low-noise transition-edge sensors (TESs) in a QKD system with transmission over 50 km. In this study, we demonstrate the potential of the TESs by successfully generating an error-corrected, privacy-amplified key over 148.7 km of dark optical fibre at a mean photon number mu = 0.1, or 184.6 km of dark optical fibre at a mean photon number of 0.5. We have also exchanged secret keys over 67.5 km that is secure against powerful photon-number-splitting (PNS) attacks. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Natl Inst Stand & Technol, Boulder, CO 80305 USA. Albion Coll, Albion, MI 49224 USA. RP Rosenberg, D (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM rosenberg@lanl.gov NR 19 TC 60 Z9 61 U1 2 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD SEP 14 PY 2006 VL 8 AR 193 DI 10.1088/1367-2630/8/9/193 PG 7 WC Physics, Multidisciplinary SC Physics GA 084AM UT WOS:000240503900004 ER PT J AU Vecchi, PA Padmaperuma, AB Qiao, H Sapochak, LS Burrows, PE AF Vecchi, Paul A. Padmaperuma, Asanga B. Qiao, Hong Sapochak, Linda S. Burrows, Paul E. TI A dibenzofuran-based host material for blue electrophosphorescence SO ORGANIC LETTERS LA English DT Article ID ORGANIC ELECTROPHOSPHORESCENCE; DEVICE AB Dibenzofuran (DBF) is converted to a vacuum-sublimable, electron-transporting host material via 2,8-substitution with diphenylphosphine oxide moieties. Close d-d stacking and the inductive influence of PdO moieties impart favorable electron-transport properties without lowering the triplet energy. A maximum external quantum efficiency of 10.1% and luminance power efficiency of 25.9 Im/W are realized using this material as the host for the blue-green electrophosphorescent molecule, iridium(III) bis(4,6-(di-fluorophenyl)pyridinato-N,C-2')picolinate (Flrpic). C1 Pacific NW Natl Lab, Div Sci Mat, Richland, WA 99352 USA. RP Vecchi, PA (reprint author), Pacific NW Natl Lab, Div Sci Mat, Richland, WA 99352 USA. EM linda.sapochak@pnl.gov NR 13 TC 135 Z9 135 U1 0 U2 22 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1523-7060 J9 ORG LETT JI Org. Lett. PD SEP 14 PY 2006 VL 8 IS 19 BP 4211 EP 4214 DI 10.1021/ol0614121 PG 4 WC Chemistry, Organic SC Chemistry GA 081TK UT WOS:000240339700010 PM 16956189 ER PT J AU Gosling, JT McComas, DJ Skoug, RM Smith, CW AF Gosling, J. T. McComas, D. J. Skoug, R. M. Smith, C. W. TI Magnetic reconnection at the heliospheric current sheet and the formation of closed magnetic field lines in the solar wind SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article AB We have identified a sunward-directed reconnection exhaust in the solar wind at a crossing of the heliospheric current sheet, HCS, by the ACE spacecraft. The exhaust was embedded within an interval of counterstreaming suprathermal electron strahls that provides direct evidence that reconnection produced closed (i.e., doubly connected to the Sun) magnetic field lines sunward of the reconnection site. We suggest that local, quasi-stationary reconnection at the HCS may, in general, be an important source of closed magnetic field lines often observed in the vicinity of the HCS. C1 Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA. SW Res Inst, Space Sci & Engn Div, San Antonio, TX 78228 USA. Los Alamos Natl Lab, Grp ISR1, Los Alamos, NM 87545 USA. Univ New Hampshire, Inst Earth Oceans & Space, Dept Phys, Durham, NH 03824 USA. Univ New Hampshire, Inst Earth Oceans & Space, Ctr Space Sci, Durham, NH 03824 USA. RP Gosling, JT (reprint author), Univ Colorado, Atmospher & Space Phys Lab, 1234 Innovat Dr, Boulder, CO 80303 USA. EM jack.gosling@lasp.colorado.edu NR 17 TC 31 Z9 31 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD SEP 13 PY 2006 VL 33 IS 17 AR L17102 DI 10.1029/2006GL027188 PG 5 WC Geosciences, Multidisciplinary SC Geology GA 085ZG UT WOS:000240642300003 ER PT J AU Hughes, MA Nielsen, D Rosenberg, E Gobetto, R Viale, A Burton, SD Ferel, J AF Hughes, Mark A. Nielsen, Dan Rosenberg, Edward Gobetto, Roberto Viale, Alessandra Burton, Sarah D. Ferel, Joseph TI Structural investigations of silica polyamine composites: Surface coverage, metal ion coordination, and ligand modification SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH LA English DT Article ID RECOVERY; REMOVAL; WATER; RESIN AB Silanization of the silica gel surface in the synthesis of silica gel polyamine composites uses (chloropropyl)trichlorosilane (CPTCS). It is possible to substitute a molar fraction of reagent CPTCS with methyltrichlorosilane (MTCS), creating a mixed silane surface layer. Two types of silica gels were modified with a series of MTCS: CPTCS molar ratios. Solid-state CP/MAS Si-29 and C-13 NMR spectroscopies were used to evaluate the surface silane composition. Surface silane coverage was markedly improved for the resulting gels. When polyamines were grafted to the resultant MTCS: CPTCS silane layers, it was shown that the decrease in the number of propyl attachments to the polyamine resulted in increased quantities of "free amines". Optimum MTCS: CPTCS ratios were determined for three polyamines grafted onto one silica gel. A substantial free amine increase was observed for poly(allylamine) (PAA). Metal uptake studies show increases in Cu(II) capacity and/or an improvement in Cu(II) mass-transfer kinetics. The effect of polymer molecular weight upon Cu(II) capacity was investigated for each polyamine. Substantial differences in Cu(II) capacity between 50 000 MW poly(vinylamine) (PVA) and > 1000 MW PVA were evident. Similar differences between 25 000 MW poly(ethyleneimine) (PEI) and 1200 MW PEI were found. The mass-transfer kinetics was shown to be improved for composites prepared using a large fraction of MTCS in the reagent silane mixture. This resulted in substantial improvements in the 10% breakthrough Cu(II) capacity for PVA (50 000 MW). PEI composites were further modified to form an amino-acetate ligand. The impact of the MTCS: CPTCS silane ratio on the acetate ligand loading and ultimately on the Cu(II) capacity at pH = 2 was investigated. A ratio of 12.5:1 was shown to result in an acetate modified PEI composite with a Cu(II) capacity 140% of the Cu(II) capacity of the same composite prepared with "CPTCS only". C1 Univ Montana, Dept Chem, Missoula, MT 59812 USA. Univ Turin, Dipartimento Chim IFM, I-10125 Turin, Italy. Pacific NW Natl Lab, William R Wiley Environm & Mol Sci Lab, Richland, WA USA. RP Rosenberg, E (reprint author), Univ Montana, Dept Chem, Missoula, MT 59812 USA. EM Edward.Rosenberg@mso.umt.edu NR 27 TC 27 Z9 31 U1 0 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0888-5885 J9 IND ENG CHEM RES JI Ind. Eng. Chem. Res. PD SEP 13 PY 2006 VL 45 IS 19 BP 6538 EP 6547 DI 10.1021/ie0601448 PG 10 WC Engineering, Chemical SC Engineering GA 081DA UT WOS:000240296200020 ER PT J AU de Souza, NR Kolesnikov, AI Burnham, CJ Loong, CK AF de Souza, N. R. Kolesnikov, A. I. Burnham, C. J. Loong, C-K TI Structure and dynamics of water confined in single-wall carbon nanotubes SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article; Proceedings Paper CT Workshop on Topics in the Application of Scattering Methods to Investigate the Structure and Dynamics of Soft Condensed Matter CY 2006 CL Fiesole, ITALY SP Consorzio Sviluppo Sistemi Grande Interfase, US DOE, Mat Sci Program ID TRANSFERABLE INTERACTION MODELS; MOLECULAR MECHANISM; NEUTRON-SCATTERING; GLASS-TRANSITION; PHASE-TRANSITION; ICE-NANOTUBES; CHANNEL; SYSTEMS; SURFACE AB The structure and dynamics of water confined in open-ended single-wall carbon nanotubes (SWNTs), here referred to as nanotube-water, were investigated by a combined neutron-scattering and molecular-dynamics-simulation study. A 'shell + chain' configuration of nanotube-water that is consistent with both experimental observations and simulation results was identified at low temperatures. The shell consists of a square-ice sheet rolled into a hollow cylinder inside an SWNT in a tube-in-tube configuration. The chain along the centreline of the shell comprises a single file of water molecules. Large fluctuations via hydrogen-bond breaking/formation, including those associated with molecules between the shell and the chain, prevail even at very low temperatures and the resulting overall hydrogen-bond network of nanotube-water is weakened significantly. Hydrogen bonds associated with the chain are especially pliable. The fluctuations increase drastically with temperature, leading to the disappearance of the shell-chain structure at similar to 210 K and the realization of confined supercooled water. A comparison of the hydrogen-bond energetics and relaxation processes of nanotube-water with those of confined supercooled water in porous silica MCM-41-S is discussed. C1 Argonne Natl Lab, Div Intense Pulsed Neutron Source, Argonne, IL 60439 USA. Univ Houston, Dept Phys, Houston, TX 77204 USA. RP Loong, CK (reprint author), Argonne Natl Lab, Div Intense Pulsed Neutron Source, 9700 S Cass Ave, Argonne, IL 60439 USA. EM ckloong@anl.gov RI de Souza, Nicolas/B-4257-2008; Kolesnikov, Alexander/I-9015-2012 OI Kolesnikov, Alexander/0000-0003-1940-4649 NR 27 TC 20 Z9 20 U1 0 U2 12 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD SEP 13 PY 2006 VL 18 IS 36 SI SI BP S2321 EP S2334 DI 10.1088/0953-8984/18/36/s07 PG 14 WC Physics, Condensed Matter SC Physics GA 094II UT WOS:000241232700008 ER PT J AU Liu, L Chen, SH Faraone, A Yen, CW Mou, CY Kolesnikov, AI Mamontov, E Leao, J AF Liu, Li Chen, Sow-Hsin Faraone, Antonio Yen, Chun-Wan Mou, Chung-Yuan Kolesnikov, Alexander I. Mamontov, Eugene Leao, Juscelino TI Quasielastic and inelastic neutron scattering investigation of fragile-to-strong crossover in deeply supercooled water confined in nanoporous silica matrices SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article; Proceedings Paper CT Workshop on Topics in the Application of Scattering Methods to Investigate the Structure and Dynamics of Soft Condensed Matter CY 2006 CL Fiesole, ITALY SP Consorzio Sviluppo Sistemi Grande Interfase, US DOE, Mat Sci Program ID SINGLE-PARTICLE DYNAMICS; STRONG LIQUID TRANSITION; PHASE-TRANSITION; DIELECTRIC-RELAXATION; CHOPPER SPECTROMETER; MOLECULAR-DYNAMICS; GLASS-TRANSITION; ADSORBED WATER; POROUS GLASSES; SLOW DYNAMICS AB We investigated, using quasi-elastic and inelastic neutron scattering, the slow single-particle dynamics of water confined in laboratory synthesized nanoporous silica matrices, MCM-41-S, with pore diameters ranging from 10 to 18 angstrom. Inside the pores of these matrices, the freezing process of water is strongly inhibited down to 160 K. We analysed the quasi-elastic part of the neutron scattering spectra with a relaxing-cage model and determined the temperature and pressure dependence of the Q-dependent translational relaxation time and its stretch exponent beta for the time dependence of the self- intermediate scattering function. The calculated Q-independent average translational relaxation time shows a fragile-to-strong (FS) dynamic crossover for pressures lower than 1600 bar. Above this pressure, it is no longer possible to discern the characteristic feature of the FS crossover. Identification of this end point with the predicted second low-temperature critical point of water is discussed. A subsequent inelastic neutron scattering investigation of the librational band of water indicates that this FS dynamic crossover is associated with a structural change of the hydrogen-bond cage surrounding a typical water molecule from a denser liquid-like configuration to a less-dense ice-like open structure. C1 MIT, Dept Nucl Sci & Engn, Cambridge, MA 02139 USA. NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA. Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA. Natl Taiwan Univ, Dept Chem, Taipei 10764, Taiwan. Argonne Natl Lab, Intense Pulsed Neutron Source Div, Argonne, IL 60439 USA. RP Chen, SH (reprint author), MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA. EM sowhsin@mit.edu RI Kolesnikov, Alexander/I-9015-2012; Mamontov, Eugene/Q-1003-2015; OI Kolesnikov, Alexander/0000-0003-1940-4649; Mamontov, Eugene/0000-0002-5684-2675; MOU, CHUNG-YUAN/0000-0001-7060-9899 NR 57 TC 69 Z9 69 U1 1 U2 34 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD SEP 13 PY 2006 VL 18 IS 36 SI SI BP S2261 EP S2284 DI 10.1088/0953-8984/18/36/S03 PG 24 WC Physics, Condensed Matter SC Physics GA 094II UT WOS:000241232700004 ER PT J AU Zanotti, JM Bellissent-Funel, MC Chen, SH Kolesnikov, AI AF Zanotti, J-M Bellissent-Funel, M. C. Chen, S-H Kolesnikov, A. I. TI Further evidence of a liquid-liquid transition in interfacial water SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article; Proceedings Paper CT Workshop on Topics in the Application of Scattering Methods to Investigate the Structure and Dynamics of Soft Condensed Matter CY 2006 CL Fiesole, ITALY SP Consorzio Sviluppo Sistemi Grande Interfase, US DOE, Mat Sci Program ID ICE AB In a previous paper we combined calorimetric, diffraction and high-resolution quasi- elastic neutron scattering data to show that after exhibiting a glass transition at 165 K, interfacial water experiences a first order liquid-liquid transition at 240 K from a low-density to a high-density liquid. Here we present further evidence of these transitions obtained by high-energy inelastic neutron scattering. C1 CEA Saclay, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France. MIT, Dept Nucl Engn, Cambridge, MA 02139 USA. Argonne Natl Lab, IPNS, Argonne, IL 60439 USA. RP Zanotti, JM (reprint author), CEA Saclay, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France. RI Zanotti, Jean-Marc/C-3188-2008; Kolesnikov, Alexander/I-9015-2012 OI Zanotti, Jean-Marc/0000-0001-6474-3944; Kolesnikov, Alexander/0000-0003-1940-4649 NR 9 TC 14 Z9 14 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD SEP 13 PY 2006 VL 18 IS 36 SI SI BP S2299 EP S2304 DI 10.1088/0953-8984/18/36/S05 PG 6 WC Physics, Condensed Matter SC Physics GA 094II UT WOS:000241232700006 ER PT J AU Zanotti, JM Smith, LJ Price, DL Saboungi, ML AF Zanotti, Jean-Marc Smith, Luis J. Price, David L. Saboungi, Marie-Louise TI A unified approach to the dynamics of a polymer melt SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article; Proceedings Paper CT Workshop on Topics in the Application of Scattering Methods to Investigate the Structure and Dynamics of Soft Condensed Matter CY 2006 CL Fiesole, ITALY SP Consorzio Sviluppo Sistemi Grande Interfase, US DOE, Mat Sci Program ID GLASS-TRANSITION TEMPERATURE; NEUTRON-SCATTERING; LOCAL DYNAMICS; BULK POLYMERS; NMR; SIMULATIONS; ELECTROLYTES; RELAXATION; OXIDE); WELL AB Stretched exponentials are often used to describe quasi-elastic neutron scattering(QENS) and nuclear magnetic resonance (NMR) relaxation data from polymer melts. In this paper, we attempt to derive a more physically meaningful model of the local (similar to 0.1 nm), short-time (similar to 10 ps) dynamics of linear polymers that takes into account (i) orientational diffusion along the polymer chain, (ii) local conformational transitions, and (iii) long-time, large-scale motions. The model takes into account the spatial component of the local dynamics, described in terms of the scattering vector Q. The model is applied to QENS results on highly entangled polyethylene oxide (PEO) melt at 373 K. We find the Q dependences of the three correlation times of the model to be consistent with Q(0),Q(-2) and Q(-4) power laws, respectively. The high-Q limit of the model closely resembles the NMR-based DLM model (Dejean de la Batie et al 1988 Macromolecules 21 2045) but the physical interpretation is different. At 373 K, the polymer dynamics is described in terms of transverse motions of the chain segments over a distance of a few nm, with a local monomeric diffusion coefficient of 1.78 x 10(-9) m(2) s(-1). From this value, we derive a monomeric friction coefficient xi(0) = 2.89 x 10(-12) N s m(-1) that, used as numerical input to the Doi-Edwards theory, leads to a chain centre-of-mass diffusion coefficient D-cm = 9.4 x 10(-15) m(2) s(-1). This value is in good agreement with pulsed field gradient NMR data (Appel and Fleischer 1993 Macromolecules 26 5520) and validates the proposed model. C1 CEA Saclay, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France. Argonne Natl Lab, Argonne, IL 60439 USA. CRMHT, F-45071 Orleans, France. CRMD, F-45071 Orleans 2, France. RP Zanotti, JM (reprint author), CEA Saclay, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France. RI Zanotti, Jean-Marc/C-3188-2008; Price, David Long/A-8468-2013; Saboungi, Marie-Louise/C-5920-2013 OI Zanotti, Jean-Marc/0000-0001-6474-3944; Saboungi, Marie-Louise/0000-0002-0607-4815 NR 20 TC 4 Z9 4 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD SEP 13 PY 2006 VL 18 IS 36 SI SI BP S2391 EP S2402 DI 10.1088/0953-8984/18/36/S13 PG 12 WC Physics, Condensed Matter SC Physics GA 094II UT WOS:000241232700014 ER PT J AU Chalk, SG Miller, JE AF Chalk, Steven G. Miller, James E. TI Key challenges and recent progress in batteries, fuel cells, and hydrogen storage for clean energy systems SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 3rd International Conference on Materials for Advanced Technologies (ICMAT-2005)/9th International Conference on Advanced Materials (ICAM 2005) CY JUL 03-08, 2005 CL Singapore, SINGAPORE SP Int Union Mat Res Soc, Mat Res Soc Singapore, Suntec Int Convent & Exhibit Ctr DE batteries; fuel cells; hydrogen; hydrides; lithium; hybrid vehicles AB Reducing or eliminating the dependency on petroleum of transportation systems is a major element of US energy research activities. Batteries are a key enabling technology for the development of clean, fuel-efficient vehicles and are key to making today's hybrid electric vehicles a success. Fuel cells are the key enabling technology for a future hydrogen economy and have the potential to revolutionize the way we power our nations, offering cleaner, more efficient alternatives to today's technology. Additionally fuel cells are significantly more energy efficient than combustion-based power generation technologies. Fuel cells are projected to have energy efficiency twice that of internal combustion engines. However before fuel cells can realize their potential, significant challenges remain. The two most important are cost and durability for both automotive and stationary applications. Recent electrocatalyst developments have shown that Pt alloy catalysts have increased activity and greater durability than Pt catalysts. The durability of conventional fluorocarbon membranes is improving, and hydrocarbon-based membranes have also shown promise of equaling the performance of fluorocarbon membranes at lower cost. Recent announcements have also provided indications that fuel cells can start from freezing conditions without significant deterioration. Hydrogen storage systems for vehicles are inadequate to meet customer driving range expectations (> 300 miles or 500 km) without intrusion into vehicle cargo or passenger space. The United States Department of Energy has established three centers of Excellence for hydrogen storage materials development. The centers are focused on complex metal hydrides that can be regenerated onboard a vehicle, chemical hydrides that require off-board reprocessing, and carbon-based storage materials. Recent developments have shown progress toward the 2010 DOE targets. In addition DOE has established an independent storage material testing center to verify storage capacity of promising materials. These developments point to a viable path to achieving the DOE/FreedomCAR cost and performance goals. The transition to hydrogen-powered fuel cell vehicles will occur over the next 10-15 years. In the interim, fossil fuel consumption will be reduced by increased penetration of battery/gasoline hybrid cars. (c) 2006 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Argonne, IL 60439 USA. US DOE, Washington, DC 20585 USA. RP Miller, JE (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM millerj@cmt.anl.gov NR 10 TC 207 Z9 209 U1 22 U2 128 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 13 PY 2006 VL 159 IS 1 BP 73 EP 80 DI 10.1016/j.jpowsour.2006.04.058 PG 8 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 091FK UT WOS:000241012000015 ER PT J AU Subramanian, V Karki, A Gnanasekar, KI Eddy, FP Rambabu, B AF Subramanian, V. Karki, A. Gnanasekar, K. I. Eddy, Fannie Posey Rambabu, B. TI Nanocrystalline TiO2 (anatase) for Li-ion batteries SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 3rd International Conference on Materials for Advanced Technologies (ICMAT-2005)/9th International Conference on Advanced Materials (ICAM 2005) CY JUL 03-08, 2005 CL Singapore, SINGAPORE SP Int Union Mat Res Soc, Mat Res Soc Singapore, Suntec Int Convent & Exhibit Ctr DE TiO2; nanocrystalline; insertion; anatase; anode; lithium battery ID NEGATIVE-ELECTRODE MATERIALS; LITHIUM INSERTION; NANOPOROUS FILMS; METAL-OXIDES; INTERCALATION; SOL; PRINCIPLES; TRANSPORT; PHASES; RUTILE AB Nanocrystalline TiO2 (anatase) was synthesized successfully by the direct conversion of TiO2-sol at 85 degrees C. The as-prepared TiO2 at 85 degrees C were calcined at different temperatures and time in order to optimize the system with best electrochemical performance. The particle sizes of the synthesized materials were found to be in the range of 15-20 nm as revealed by the HR-TEM studies. Commercial TiO2 anatase (Micron size) was also studied for its Li-insertion and deinsertion properties in order to compare with the nanocrystalline TiO2. The full cell studies were performed with LiCoO2 cathode with the best performing nano-TiO2 as anode. The specific capacity of the nanocrystalline TiO2 synthesized at 500 degrees C/2 h in a half-cell configuration was 169 mAh g(-1) while for the cell with LiCoO2 cathode, it was 95 mAh g(-1) in the 2 V region. The specific reversible capacity and the cycling performance of the synthesized nano-TiO2 anode in full cell configuration across LiCoO2 cathode are superior to that reported in the literature. Cyclic voltammetry measurements showed a larger peak separation for the micro-TiO2 than the nano-TiO2, clearly indicating the influence of nano-particle size on the electrochemical performance. (c) 2006 Elsevier B.V. All rights reserved. C1 So Univ, Dept Phys, Solid State Ion & Surface Sci Lab, Baton Rouge, LA 70813 USA. A&M Coll, Baton Rouge, LA 70813 USA. Natl Renewable Energy Lab, Natl Ctr Photovoltaics, Golden, CO 80401 USA. RP Rambabu, B (reprint author), So Univ, Dept Phys, Solid State Ion & Surface Sci Lab, Baton Rouge, LA 70813 USA. EM rambabu@grant.phys.subr.edu NR 34 TC 124 Z9 127 U1 5 U2 73 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 13 PY 2006 VL 159 IS 1 BP 186 EP 192 DI 10.1016/j.jpowsour.2006.04.027 PG 7 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 091FK UT WOS:000241012000035 ER PT J AU Coppo, M Siegel, NP von Spakovsky, MR AF Coppo, M. Siegel, N. P. von Spakovsky, M. R. TI On the influence of temperature on PEM fuel cell operation SO JOURNAL OF POWER SOURCES LA English DT Article DE PEM fuel cell; temperature effect; mathematical model ID 3-DIMENSIONAL COMPUTATIONAL ANALYSIS; TRANSPORT PHENOMENA; MODEL AB The 3D implementation of a previously developed 2D PEMFC model [N.P. Siegel, M.W. Ellis, D.J. Nelson, M.R. von Spakovsky, A two-dimensional computational model of a PEMFC with liquid water transport, J. Power Sources 128 (2) (2004) 173-184; N.P. Siegel, M.W. Ellis, D.J. Nelson, M.R. von Spakovsky, Single domain PEMFC model based on agglomerate catalyst geometry, J. Power Sources 115 (2003) 81-89] has been used to analyze the various pathways by which temperature affects the operation of a proton exchange membrane fuel cell [M. Coppo, CFD analysis and experimental investigation of proton exchange membrane fuel cells, Ph.D. Dissertation, Politecnico di Torino, Turin, Italy, 2005]. The original model, implemented in a specially modified version of CFDesign (R) [CFDesign (R) V5.1, Blue Ridge Numerics, 2003], accounts for all of the major transport processes including: (i) a three-phase model for water transport in the liquid, vapor and dissolved phases, (ii) proton transport, (iii) gaseous species transport and reaction, (iv) an agglomerate model for the catalyst layers and (v) gas phase momentum transport. Since the details of it have been published earlier [N.P. Siegel, M.W. Ellis, D.J. Nelson, M.R. von Spakovsky, A two-dimensional computational model of a PEMFC with liquid water transport, J. Power Sources 128 (2) (2004) 173-184; N.P. Siegel, M.W. Ellis, D.J. Nelson, MR. von Spakovsky, Single domain PEMFC model based on agglomerate catalyst geometry, J. Power Sources 115 (2003) 81-89; N.P. Siegel, Development and validation of a computational model for a proton exchange membrane fuel cell, Ph.D. Dissertation, Virginia Polytechnic Institute and State University, Blacksburg, VA, 2003], only new features are briefly discussed in the present work. In particular, the model has been extended in order to account for the temperature dependence of all of the physical properties involved in the model formulation. Moreover, a novel model has been developed to describe liquid water removal from the gas diffusion layer (GDL) surface by advection due to the interaction of the water droplets and the gas stream in the gas flow channels (GFC). The complete cell model has been validated against experimentally measured polarization curves, showing good accuracy in reproducing cell performance over a wide range of operating temperatures and making it possible to use the model to study the effect of temperature-dependent parameter variations on cell performance. An important conclusion of the study found that both liquid water transport within the GDL and liquid water removal from the surface of the GDL play a crucial role in determining variations in cell performance with temperature. (c) 2005 Elsevier B.V. All rights reserved. C1 Politecn Torino, Energy Engn Dept, I-10129 Turin, Italy. Sandia Natl Labs, Albuquerque, NM 87185 USA. Virginia Polytech Inst & State Univ, Ctr Energy Syst Res, Dept Mech Engn, Blacksburg, VA 24061 USA. RP Coppo, M (reprint author), Politecn Torino, Energy Engn Dept, Corso Duca Abruzzi 24, I-10129 Turin, Italy. EM marco.coppo@polito.it RI von Spakovsky, Michael/F-2465-2014 OI von Spakovsky, Michael/0000-0002-3884-6904 NR 16 TC 35 Z9 41 U1 2 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 13 PY 2006 VL 159 IS 1 BP 560 EP 569 DI 10.1016/j.jpowsour.2005.09.069 PG 10 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 091FK UT WOS:000241012000100 ER PT J AU Gemmen, RS Johnson, CD AF Gemmen, R. S. Johnson, C. D. TI Evaluation of fuel cell system efficiency and degradation at development and during commercialization SO JOURNAL OF POWER SOURCES LA English DT Article DE degradation; fuel cell; system; standards ID PART I; TEMPERATURE AB Two primary parameters stand out for characterizing fuel cell system performance. The first and most important parameter is system efficiency. This parameter is relatively easy to define, and protocols for its assessment are already available. Another important parameter yet to be fully considered is system degradation. Degradation is important because customers desire to know how long their purchased fuel cell unit will last. The measure of degradation describes this performance factor by quantifying, for example, how the efficiency of the unit degrades over time. While both efficiency and degradation concepts are readily understood, the coupling between these two parameters must also be understood so that proper testing and evaluation of fuel cell systems is achieved. Tests not properly performed, and results not properly understood, may result in improper use of the evaluation data, producing improper R&D planning decisions and financial investments. This paper presents an analysis of system degradation, recommends an approach to its measurement, and shows how these two parameters are related and how one can be "traded-off" for the other. (c) 2005 Elsevier B.V. All rights reserved. C1 Natl Energy Technol Lab, Morgantown, WV 26507 USA. RP Gemmen, RS (reprint author), Natl Energy Technol Lab, 3610 Collins Ferry Rd, Morgantown, WV 26507 USA. EM randall.gemmen@netl.doe.gov NR 26 TC 35 Z9 35 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 EI 1873-2755 J9 J POWER SOURCES JI J. Power Sources PD SEP 13 PY 2006 VL 159 IS 1 BP 646 EP 655 DI 10.1016/j.jpowsour.2005.10.109 PG 10 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 091FK UT WOS:000241012000109 ER PT J AU Winkler, W Nehter, P Williams, MC Tucker, D Gemmen, R AF Winkler, Wolfgang Nehter, Pedro Williams, Mark C. Tucker, David Gemmen, Randy TI General fuel cell hybrid synergies and hybrid system testing status SO JOURNAL OF POWER SOURCES LA English DT Article DE fuel cell; fuel cell-turbine; hybrid power systems AB FCT hybrid power systems offer the highest efficiency and the cleanest emissions of all fossil fuelled power. The engineering for the highest possible efficiency at lowest cost and weight depends on general system architecture issues and the performance of the components. Presented in this paper are system studies which provide direction for the most efficient path toward achieving the most beneficial result for this technology. Ultimately, fuel cell-turbine (FCT) hybrid systems applicable to integrated gasification combined cycle power systems will form the basis for reaching the goals for advanced coal-based power generation. The FCT hybrid power island will also be important for the FutureGen plant and will provide new options for carbon dioxide capture and sequestration as well as power and hydrogen generation. The system studies presented in this paper provide insight to current technology 'benchmarks' versus expected benefits from hybrid applications. Discussion is also presented on the effects of different balance of plant arrangements and approaches. Finally, we discuss the status of US DOE is sponsored projects that are looking to help understand the unique requirements for these systems. One of these projects, Hyper, will provide information on FCT dynamics and will help identify technical needs and opportunities for cycle advancement. The methods studied show promise for effective control of a hybrid system without the direct intervention of isolation valves or check valves in the main pressure loop of the system, which introduce substantial pressure losses, allowing for realization of the full potential efficiency of the hybrid system. (c) 2006 Published by Elsevier B.V. C1 US DOE, Natl Energy Technol Lab, Morgantown, WV USA. Hamburg Univ Appl Sci, Hamburg, Germany. RP Williams, MC (reprint author), US DOE, Natl Energy Technol Lab, Morgantown, WV USA. EM mark.williams@netl.doe.gov NR 15 TC 27 Z9 27 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD SEP 13 PY 2006 VL 159 IS 1 BP 656 EP 666 DI 10.1016/j.jpowsour.2005.09.070 PG 11 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 091FK UT WOS:000241012000110 ER PT J AU Insepov, Z Wolf, D Hassanein, A AF Insepov, Zeke Wolf, Dieter Hassanein, Ahmed TI Nanopumping using carbon nanotubes SO NANO LETTERS LA English DT Article ID HYDROGEN PHYSISORPTION; LASER ULTRASONICS; FLOW; TEMPERATURE; PROPAGATION; SIMULATION; DYNAMICS; SYSTEMS; STORAGE AB A new "nanopumping" effect consisting of the activation of an axial gas flow inside a carbon nanotube by producing Rayleigh traveling waves on the nanotube surface is predicted. The driving force for the new effect is the friction between the gas particles and the nanotube walls. A molecular dynamics simulation of the new effect was carried out showing macroscopic flows of atomic and molecular hydrogen and helium gases in a carbon nanotube. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Insepov, Z (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM insepov@anl.gov RI Insepov, Zinetula/L-2095-2013 OI Insepov, Zinetula/0000-0002-8079-6293 NR 34 TC 67 Z9 69 U1 3 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP 13 PY 2006 VL 6 IS 9 BP 1893 EP 1895 DI 10.1021/nl060932m PG 3 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 083NT UT WOS:000240465100011 PM 16967997 ER PT J AU Welch, PM Welch, CF AF Welch, Paul M. Welch, Cynthia F. TI The effects of crowding in dendronized polymers SO NANO LETTERS LA English DT Article ID HIGH-MOLECULAR-WEIGHT; SCALING BEHAVIOR; DILUTE-SOLUTION; SHAPE CONTROL; SIDE-CHAINS; DENDRIMERS; NANOCYLINDER; BACKBONE; CORE; BULK AB We present a comprehensive numerical study of the effect of degree of polymerization, generation of dendron growth, length of dendron tether, and dendron grafting density on the conformational statistics of dendronized polymers. This class of supramolecular assembly promises to find application in a number of nanotechnological devices in which their dimensions and conformations are key. We find that the radius of gyration estimates obtained from Brownian dynamics simulations yield to a "Flory" scaling argument in the high degree of polymerization regime and that these data from a range of topologically distinct molecules collapse onto a single curve in this limit. The size of the tethered dendrons serve as the key parameter in the scaling theory. Close examination of the dendrons also reveals some curious trends. In particular, we observe that as the grafting density is increased, spatial packing constraints around the main chain backbone force the dendrons further away from the backbone and compress them, significantly affecting the spatial distribution and accessibility of terminal groups; in contrast to dendrimers, the terminal groups of these molecules display a tendency to partition near the surface at high dendron grafting densities. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Welch, PM (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM PWelch@lanl.gov OI Welch, Cynthia/0000-0002-4638-6434; Welch, Paul/0000-0001-5614-2065 NR 43 TC 22 Z9 22 U1 0 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP 13 PY 2006 VL 6 IS 9 BP 1922 EP 1927 DI 10.1021/nl061036d 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 083NT UT WOS:000240465100016 PM 16968002 ER PT J AU Artyukhin, AB Stadermann, M Friddle, RW Stroeve, P Bakajin, O Noy, A AF Artyukhin, Alexander B. Stadermann, Michael Friddle, Raymond W. Stroeve, Pieter Bakajin, Olgica Noy, Aleksandr TI Controlled electrostatic gating of carbon nanotube FET devices SO NANO LETTERS LA English DT Article ID FIELD-EFFECT TRANSISTORS; PROBE MICROSCOPY TIPS; LABEL-FREE DETECTION; POLYELECTROLYTE MULTILAYERS; ELECTRICAL DETECTION; DNA HYBRIDIZATION; CHARGE DENSITY; ADSORPTION; SILICA; BIOSENSORS AB Carbon nanotube transistors are a promising platform for the next generation of nonoptical biosensors. However, the exact nature of the biomolecule interactions with nanotubes in these devices remains unknown, creating one of the major obstacles to their practical use. We assembled alternating layers of oppositely charged polyelectrolytes on the carbon nanotube transistors to mimic gating of these devices by charged molecules. The devices showed reproducible oscillations of the transistor threshold voltage depending on the polarity of the outer polymer layer in the multilayer film. This behavior shows excellent agreement with the predictions of a simple electrostatic model. Finally, we demonstrate that complex interactions of adsorbed species with the device substrate and the surrounding electrolyte can produce significant and sometimes unexpected effects on the device characteristics. C1 Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. RP Noy, A (reprint author), Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. EM noy1@llnl.gov RI Bakajin, Olgica/A-9745-2008; Stadermann, Michael /A-5936-2012 OI Stadermann, Michael /0000-0001-8920-3581 NR 54 TC 75 Z9 78 U1 0 U2 30 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP 13 PY 2006 VL 6 IS 9 BP 2080 EP 2085 DI 10.1021/nl061343j 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 083NT UT WOS:000240465100043 PM 16968029 ER PT J AU Spontak, RJ Shankar, R Bowman, MK Krishnan, AS Hamersky, MW Samseth, J Bockstaller, MR Rasmussen, KO AF Spontak, Richard J. Shankar, Ravi Bowman, Michelle K. Krishnan, Arjun S. Hamersky, Mark W. Samseth, Jon Bockstaller, Michael R. Rasmussen, Kim O. TI Selectivity- and size-induced segregation of molecular and nanoscale species in microphase-ordered triblock copolymers SO NANO LETTERS LA English DT Article ID BLOCK POLYMER-SOLUTIONS; SELF-CONSISTENT THEORY; PHASE-BEHAVIOR; VARYING SELECTIVITY; DIBLOCK COPOLYMERS; HOMOPOLYMER BLENDS; NEUTRAL SOLVENT; BINARY-MIXTURES; WEIGHT; NANOPARTICLES AB Microphase-ordered block copolymers serve as model systems to elucidate the potential of molecular self-assembly and organic templates to fabricate functionalized polymeric materials. Both aspects are related to the incorporation of secondary species such as low-molar-mass compounds or nanoparticles within the copolymer matrices. Since the resulting properties of such functionalized copolymers critically depend on the morphology of the blend or composite, the nonrandom distribution of such inclusions within the copolymer matrix must be understood. Using a self-consistent field theoretical approach, we quantitatively evaluate the segregation and interfacial excess of low-molar-mass and nanoscale species in ordered triblock copolymers as functions of block selectivity and inclusion size. The predictions are found to agree with the morphology observed in a model triblock copolymer/nanoparticle composite, thereby demonstrating the generality of this approach. Our results suggest a wide correspondence in the structure-forming effect of molecular and nanoscale inclusions that will have implications in the design and processing of functional nanostructured polymers. C1 N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA. N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA. N Carolina State Univ, Fiber & Polymer Sci Program, Raleigh, NC 27695 USA. Procter & Gamble Co, Miami Valley Innovat Ctr, Cincinnati, OH 45061 USA. Akershus Univ Coll, N-2000 Lillestrom, Norway. Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Spontak, RJ (reprint author), N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA. EM rich_spontak@ncsu.edu; kor@lanl.gov RI Rasmussen, Kim/B-5464-2009; Bockstaller, Michael/A-9124-2011 OI Rasmussen, Kim/0000-0002-4029-4723; Bockstaller, Michael/0000-0001-9046-9539 NR 58 TC 71 Z9 71 U1 1 U2 18 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD SEP 13 PY 2006 VL 6 IS 9 BP 2115 EP 2120 DI 10.1021/nl061205u 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 083NT UT WOS:000240465100050 PM 16968036 ER PT J AU Song, K Hornak, V Santos, CD Grollman, AP Simmerling, C AF Song, Kun Hornak, Viktor de los Santos, Carlos Grollman, Arthur P. Simmerling, Carlos TI Computational analysis of the mode of binding of 8-oxoguanine to formamidopyrimidine-DNA glycosylase SO BIOCHEMISTRY LA English DT Article ID HISTOGRAM ANALYSIS METHOD; FREE-ENERGY CALCULATIONS; PARTICLE MESH EWALD; MOLECULAR-DYNAMICS; SUBSTRATE DISCRIMINATION; LESION RECOGNITION; CRYSTAL-STRUCTURE; GENERALIZED BORN; REPAIR ENZYME; PK(A) VALUES AB 8-Oxoguanine (8OG) is the most prevalent form of oxidative DNA damage. In bacteria, 8OG is excised by formamidopyrimidine glycosylase (Fpg) as the initial step in base excision repair. To efficiently excise this lesion, Fpg must discriminate between 8OG and an excess of guanine in duplex DNA. In this study, we explore the structural basis underlying this high degree of selectivity. Two structures have been reported in which Fpg is bound to DNA, differing with respect to the position of the lesion in the active site, one structure showing 8OG bound in the syn conformation and the other in the anti conformation. Remarkably, the results of our all-atom simulations are consistent with both structures. The syn conformation observed in the crystallographic structure of Fpg obtained from Bacillus stearothermophilus is stabilized through interaction with E77, a nonconserved residue. Replacement of E77 with Ser, creating the Fpg sequence found in Escherichia coli and other bacteria, results in preferred binding of 8OG in the anti conformation. Our calculations provide novel insights into the roles of active site residues in binding and recognition of 8OG by Fpg. C1 SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. SUNY Stony Brook, Dept Pharmacol Sci, Stony Brook, NY 11794 USA. SUNY Stony Brook, Ctr Struct Biol, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Computat Sci Ctr, Upton, NY 11973 USA. RP Simmerling, C (reprint author), SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. EM carlos.simmerling@stonybrook.edu FU NCI NIH HHS [CA047995, CA17395]; NIGMS NIH HHS [R01 GM061678-06A1, GM6167803, R01 GM061678] NR 49 TC 15 Z9 15 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD SEP 12 PY 2006 VL 45 IS 36 BP 10886 EP 10894 DI 10.1021/bi060380m PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 080MG UT WOS:000240251300011 PM 16953574 ER PT J AU Petzold, L Li, ST Cao, Y Serban, R AF Petzold, Linda Li, Shengtai Cao, Yang Serban, Radu TI Sensitivity analysis of differential-algebraic equations and partial differential equations SO COMPUTERS & CHEMICAL ENGINEERING LA English DT Article; Proceedings Paper CT 7th International Conference on Chemical Process Control (CPC 7) CY JAN 08-13, 2006 CL Lake Louise, CANADA SP CACHE Corp, AIChE, CACHE Div, AIChE, CAST Div, Natl Sci Fdn, Aspen Technol, Eastman Chem, ExxonMobil Chem, Praxair & Shell Global Solut DE sensitivity analysis; differential-algebraic equations; adjoint method ID ADAPTIVE MESH REFINEMENT; SYSTEMS; SOFTWARE; OPTIMIZATION; ALGORITHMS AB Sensitivity analysis generates essential information for model development, design optimization, parameter estimation, optimal control, model reduction and experimental design. In this paper we describe the forward and adjoint methods for sensitivity analysis, and outline some of our recent work on theory, algorithms and software for sensitivity analysis of differential-algebraic equation (DAE) and time-dependent partial differential equation (PDE) systems. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Calif Santa Barbara, Dept Comp Sci, Santa Barbara, CA 93106 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Virginia Tech, Dept Comp Sci, Blacksburg, VA 24061 USA. Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA. RP Petzold, L (reprint author), Univ Calif Santa Barbara, Dept Comp Sci, Santa Barbara, CA 93106 USA. EM petzold@engineering.ucsb.edu OI Li, Shengtai/0000-0002-4142-3080 NR 31 TC 30 Z9 32 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0098-1354 J9 COMPUT CHEM ENG JI Comput. Chem. Eng. PD SEP 12 PY 2006 VL 30 IS 10-12 BP 1553 EP 1559 DI 10.1016/j.compchemeng.2006.05.015 PG 7 WC Computer Science, Interdisciplinary Applications; Engineering, Chemical SC Computer Science; Engineering GA 088EJ UT WOS:000240794000013 ER PT J AU Deng, YQ Roux, B AF Deng, Yuqing Roux, Benoit TI Calculation of standard binding free energies: Aromatic molecules in the T4 lysozyme L99A mutant SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION LA English DT Article ID HISTOGRAM ANALYSIS METHOD; ABSOLUTE FREE-ENERGIES; COMPUTER-SIMULATIONS; LIGAND-BINDING; CONFORMATIONAL-ANALYSIS; BIOMOLECULAR SYSTEMS; DYNAMICS SIMULATION; SCORING FUNCTIONS; NONPOLAR CAVITY; WATER-MOLECULES AB Calculations of the binding free energy of various nonpolar aromatic ligands with the L99A mutant of T4 lysozyme using molecular dynamics (MD) simulation are presented. To ensure better convergence, biasing potentials are used to restrain the ligand orientation and center-of-mass movement relative to the binding site when the ligand is decoupled from its environment in the binding pocket. The bias introduced by the restraint potentials is removed once the ligand fully interacts with the rest of the system and the calculated binding free energy is independent of the applied restraints. To decrease the computational cost, the simulations are generated with a reduced system in which protein and water atoms within a 15 angstrom-radius sphere around the ligand are included explicitly, while the rest of the system is treated with the generalized solvent boundary potential (GSBP). For all the ligands, the precision of the calculated free energy is less than 0.5 kcal/mol. For small nonpolar ligands such as benzene, toluene, and ethylbenzene, the calculated binding free energies are within 1.1 kcal/mol of the experimental values. For larger ligands, the computed binding free energies are slightly more favorable than the experimental values. The nonbinding polar molecule, phenol, has a calculated binding free energy of -0.88 kcal/mol. The simulation protocol presented here provides a way to calculate the binding free energy of small molecules to receptors at moderate computational cost. C1 Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. Univ Chicago, Gordon Ctr Integrat Sci, Inst Mol Pediat Sci, Chicago, IL 60637 USA. RP Roux, B (reprint author), Argonne Natl Lab, Biosci Div, 9700 S Cass Ave Bldg 221, Argonne, IL 60439 USA. EM roux@uchicago.edu NR 65 TC 146 Z9 146 U1 1 U2 29 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1549-9618 EI 1549-9626 J9 J CHEM THEORY COMPUT JI J. Chem. Theory Comput. PD SEP 12 PY 2006 VL 2 IS 5 BP 1255 EP 1273 DI 10.1021/ct060037v PG 19 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 083DV UT WOS:000240437000005 PM 26626834 ER PT J AU Kuo, IFW Mundy, CJ McGrath, MJ Siepmann, JI AF Kuo, I. -Feng W. Mundy, Christopher J. McGrath, Matthew J. Siepmann, J. Ilja TI Time-dependent properties of liquid water: A comparison of Car-Parrinello and Born-Oppenheimer molecular dynamics simulations SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION LA English DT Article ID DENSITY-FUNCTIONAL THEORY; 1ST PRINCIPLES SIMULATIONS; AB-INITIO; SUPERCRITICAL WATER; AMBIENT CONDITIONS; SELF-DIFFUSION; HEAVY-WATER; PSEUDOPOTENTIALS; TEMPERATURE; SOLVATION AB A series of 30 ps first principles molecular dynamics simulations in the microcanonical ensemble were carried out to investigate transport and vibrational properties of liquid water. To allow for sufficient sampling, the thermodynamic constraints were set to an elevated temperature of around 423 K and a density of 0.71 g cm(-3) corresponding to the saturated liquid density for the Becke-Lee-Yang-Parr (BLYP) representation of water. Four simulations using the Car-Parrinello molecular dynamics (CPMD) technique with varying values of the fictitious electronic mass (mu) and two simulations using the Born-Oppenheimer molecular dynamics (BOMD) technique are analyzed to yield structural and dynamical information. At the selected state point, the simulations are found to exhibit nonglassy dynamics and yield consistent results for the liquid structure and the self-diffusion coefficient, although the statistical uncertainties in the latter quantity are quite large. Consequently, it can be said that the CPMD and BOMD methods produce equivalent results for these properties on the time scales reported here. However, it was found that the choice of mu affects the frequency spectrum of the intramolecular modes, shifting them slightly to regions of lower frequency. Using a value of mu = 400 au results in a significant drift in the electronic kinetic energy of the system over the course of 30 ps and a downward drift in the ionic temperature. Therefore, for long trajectories at elevated temperatures, lower values of this parameter are recommended for CPMD simulations of water. C1 Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA. Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA. RP Siepmann, JI (reprint author), Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. EM siepmann@chem.umn.edu NR 42 TC 52 Z9 52 U1 4 U2 23 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1549-9618 EI 1549-9626 J9 J CHEM THEORY COMPUT JI J. Chem. Theory Comput. PD SEP 12 PY 2006 VL 2 IS 5 BP 1274 EP 1281 DI 10.1021/ct6001913 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 083DV UT WOS:000240437000006 PM 26626835 ER PT J AU Zeineldin, R Last, JA Slade, AL Ista, LK Bisong, P O'Brien, MJ Brueck, SRJ Sasaki, DY Lopez, GP AF Zeineldin, Reema Last, Julie A. Slade, Andrea L. Ista, Linnea K. Bisong, Paul O'Brien, Michael J. Brueck, S. R. J. Sasaki, Darryl Y. Lopez, Gabriel P. TI Using bicellar mixtures to form supported and suspended lipid bilayers on silicon chips SO LANGMUIR LA English DT Article ID PHOSPHOLIPID-BILAYERS; MODEL MEMBRANES; NMR; MICROSCOPY; PROTEINS; DYNAMICS; SURFACES; PHASE AB Bicellar mixtures, planar lipid bilayer assemblies comprising long-and short-chain phosphatidylcholine lipids in suspension, were used to form supported lipid bilayers on flat silicon substrate and on nanotextured silicon substrates containing arrays of parallel troughs (170 nm wide, 380 nm deep, and 300 nm apart). Confocal fluorescence and atomic force microscopies were used to characterize the resulting lipid bilayer. Formation of a continuous biphasic undulating lipid bilayer membrane, where the crests and troughs corresponded to supported and suspended lipid bilayer regions, is demonstrated. The use of interferometric lithography to fabricate nanotexured substrates provides an advantage over other nanotextured substrates such as nanoporous alumina by offering flexibility in designing different geometries for suspending lipid bilayers. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ New Mexico, Ctr Biomed Engn, Albuquerque, NM 87131 USA. Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA. RP Sasaki, DY (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM dysasak@sandia.gov; gplopez@unm.edu RI Brueck, Steven/A-6383-2013; Ista, Linnea/A-5029-2016; OI Ista, Linnea/0000-0002-8747-9987; Brueck, Steven/0000-0001-8754-5633 FU NCI NIH HHS [R24 CA88339]; NCRR NIH HHS [1 S10 RR14668, P20 RR11830, S10 RR016918, S10 RR19287] NR 30 TC 13 Z9 13 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD SEP 12 PY 2006 VL 22 IS 19 BP 8163 EP 8168 DI 10.1021/la060817r PG 6 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 080LZ UT WOS:000240250600035 PM 16952257 ER PT J AU Lim, SHN McCulloch, DG Bilek, MMM McKenzie, DR du Plessis, J Swain, MV Wuhrer, R AF Lim, S. H. N. McCulloch, D. G. Bilek, M. M. M. McKenzie, D. R. du Plessis, J. Swain, M. V. Wuhrer, R. TI The effect of plasma immersion ion implantation on the contact pressure and composition of titanium nitride thin films SO SURFACE & COATINGS TECHNOLOGY LA English DT Article DE titanium nitride; indentation hardness; cathodic arc; plasma immersion ion implantation; composition ID CATHODIC ARC; INTRINSIC STRESS; DEPOSITION; TIN; COATINGS; MICROSTRUCTURE AB The effect of plasma immersion ion implantation on the indentation hardness as measured by contact pressure and composition of cathodic are deposited TiN thin films was investigated. According to Auger electron spectroscopy results, increasing the pulse bias voltage up to 18 kV has little effect on the composition of the TiN films. The nano-indentation hardness of the films was found to decrease linearly with increasing pulse bias voltage as the intrinsic stress within the films decreases. A model, based on the columnar microstructure observed in our TiN films, has been developed to explain the dependence of indentation hardness on stress. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Sydney, Sch Phys A28, Dept Appl Phys, Sydney, NSW 2006, Australia. RMIT Univ, Sch Appl Sci, Melbourne, Vic 3001, Australia. Univ Sydney, Sydney Dent Hosp, Fac Dent, Sydney, NSW 2010, Australia. Univ Technol Sydney, Microstruct Anal Unit, Sydney, NSW 2007, Australia. RP Lim, SHN (reprint author), Lawrence Berkeley Natl Lab, Plasma Applicat Grp, 1 Cyclotron Rd,MS 53, Berkeley, CA 94720 USA. EM slim@physics.usyd.edu.au RI Du Plessis, Johan/F-6061-2010; Lim, Sunnie/A-2827-2012; McCulloch, Dougal/G-7039-2012 NR 17 TC 5 Z9 6 U1 0 U2 4 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD SEP 12 PY 2006 VL 201 IS 1-2 BP 396 EP 400 DI 10.1016/j.surfcoat.2005.11.141 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 085PS UT WOS:000240616600053 ER PT J AU Manna, I Majumdar, JD Chandra, BR Nayak, S Dahotre, NB AF Manna, I. Majumdar, J. Dutta Chandra, B. Ramesh Nayak, S. Dahotre, Narendra B. TI Laser surface cladding of Fe-B-C, Fe-B-Si and Fe-BC-Si-Al-C on plain carbon steel SO SURFACE & COATINGS TECHNOLOGY LA English DT Article DE steel; laser; cladding; microhardness; wear ID RESISTANCE; OXIDATION; PHASE AB In the present study, an attempt has been made to explore deposition of Fe-based amorphous/glassy layer on a plain carbon (AISI 1010) steel by laser surface cladding (LSC) to improve resistance of the substrate to wear and corrosion. Three known glass forming powder blends (under rapid solidification condition) with nominal compositions of 94Fe4B2C, 75Fe15B10Si and 78Fe10BC9Si2Al1C (all in wt.%) were deposited by LSC using a continuous wave Nd:YAG laser under optimum processing conditions determined by preliminary trials. Following LSC, the microstructure and mechanical properties (microhardness and wear resistance) were evaluated in details. Despite the rapid quenching accompanying LSC, none of the coatings developed/retained amorphous/glassy cladding possibly due to large-scale solute redistribution in the clad zone and/or between the clad layer and substrate. The clad microstructure is characterized by fine dispersion of nano/microcrystalline intermetallic and interstitial compounds/phases in ferritic matrix. Both microhardness and wear resistance showed a significant improvement, particularly after LSC with 94Fe4B2C. Potentiodynamic polarization studies in 3.56 wt.% NaCl solution showed that corrosion resistance of the substrate was remarkably improved by LSC with 94Fe4B2C, but slightly deteriorated after LSC with the other two coatings. Thus, it appears that LSC with 94Fe4B2C, among the present coatings, significantly enhances hardness and resistance to wear and corrosion of the substrate, though fails to develop/retain amorphous microstructure under the present laser processing condition. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. Indian Inst Technol, Met & Mat Engn Dept, Kharagpur 721302, W Bengal, India. Oak Ridge Natl Lab, Div Met & Ceram, Mat Proc Grp, Oak Ridge, TN 37831 USA. RP Dahotre, NB (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. EM ndahotre@utk.edu NR 25 TC 60 Z9 75 U1 11 U2 45 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD SEP 12 PY 2006 VL 201 IS 1-2 BP 434 EP 440 DI 10.1016/j.surfcoat.2005.11.138 PG 7 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 085PS UT WOS:000240616600059 ER PT J AU Chu, SY Schwartz, AJ Massalski, TB Laughlin, DE AF Chu, Shaoyan Schwartz, Adam J. Massalski, Thaddeus B. Laughlin, David E. TI Extrinsic paramagnetic Meissner effect in multiphase indium-tin alloys SO APPLIED PHYSICS LETTERS LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; SYSTEM; DISKS; NB AB The authors report the observation of a paramagnetic Meissner effect (PME) in a two-phase In-Sn alloy in which the phases become superconducting at different temperatures. This observation has been tested and confirmed by constructing an artificial In-Sn sample in which one phase was deliberately encapsulated in another. The authors conclude that PME is extrinsic, rather than intrinsic, and thus describe it as an extrinsic paramagnetic Meissner effect (EPME). It is expected to occur in multiple-phase samples where more than one phase is superconducting and where a suitable microstructural phase distribution is developed. In such samples EPME can be produced at will. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Phys & Adv Technol Directorate, Livermore, CA 94550 USA. Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA. RP Schwartz, AJ (reprint author), Lawrence Livermore Natl Lab, Phys & Adv Technol Directorate, POB 5508, Livermore, CA 94550 USA. EM schwartz6@llnl.gov NR 23 TC 10 Z9 10 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 11 PY 2006 VL 89 IS 11 AR 111903 DI 10.1063/1.2352805 PG 3 WC Physics, Applied SC Physics GA 084PI UT WOS:000240545400029 ER PT J AU Crowhurst, JC Antonangeli, D Brown, JM Goncharov, AF Farber, DL Aracne, CM AF Crowhurst, J. C. Antonangeli, D. Brown, J. M. Goncharov, A. F. Farber, D. L. Aracne, C. M. TI Determination of the high pressure elasticity of cobalt from measured interfacial acoustic wave velocities SO APPLIED PHYSICS LETTERS LA English DT Article ID TRANSITION-METALS FE; DENSE HELIUM; HCP-IRON; GPA; GIGAPASCALS; SPECTROSCOPY; CONSTANTS; RE AB We have used impulsive stimulated light scattering to measure the velocity of an acoustic wave propagating along the interface formed by a cobalt single crystal in contact with liquid helium to a pressure of 10 GPa. We have combined the measured velocities with x-ray diffraction data of cobalt under compression to obtain the elastic tensor elements c(44) and c(66), and with lower precision c(11), c(12), and c(13). We further show that using published inelastic x-ray scattering results for c(33) the associated uncertainties of c(11), c(12), and c(13) are substantially reduced. (c) 2006 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Washington, Seattle, WA 98195 USA. Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. European Synchrotron Radiat Facil, F-38043 Grenoble, France. Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. RP Crowhurst, JC (reprint author), Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94550 USA. EM crowhurst1@llnl.gov RI Farber, Daniel/F-9237-2011 NR 24 TC 11 Z9 11 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 11 PY 2006 VL 89 IS 11 AR 111920 DI 10.1063/1.2220537 PG 3 WC Physics, Applied SC Physics GA 084PI UT WOS:000240545400046 ER PT J AU Fan, C Liaw, PK Wilson, TW Dmowski, W Choo, H Liu, CT Richardson, JW Proffen, T AF Fan, Cang Liaw, P. K. Wilson, T. W. Dmowski, W. Choo, H. Liu, C. T. Richardson, J. W. Proffen, Th. TI Structural model for bulk amorphous alloys SO APPLIED PHYSICS LETTERS LA English DT Article ID SHORT-RANGE ORDER; METALLIC GLASSES; NANOCRYSTALLINE COMPOSITES; CRYSTALLIZATION AB A structural model is proposed for bulk amorphous alloys based on the pair distribution functions (PDFs) measured using neutron scattering at ambient and cryogenic temperatures and different structural states. Reverse Monte Carlo (RMC) simulations were performed, in which icosahedral and cubic structures were used as the initial structures for the PDF refinement. The combined PDF and RMC studies show that strongly bonded clusters, with atomic-bond lengths shorter than their crystalline counterpart structures, are randomly distributed and strongly connected in the amorphous matrix. An attempt has also been made to identify the relationship between amorphous structures and their mechanical properties. (c) 2006 American Institute of Physics. C1 Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. Argonne Natl Lab, Intense Pulsed Neutron Source Div, Argonne, IL 60439 USA. Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, LANSCE, Los Alamos, NM 87545 USA. RP Fan, C (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. RI Lujan Center, LANL/G-4896-2012; Choo, Hahn/A-5494-2009; Proffen, Thomas/B-3585-2009 OI Choo, Hahn/0000-0002-8006-8907; Proffen, Thomas/0000-0002-1408-6031 NR 23 TC 24 Z9 25 U1 1 U2 21 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 11 PY 2006 VL 89 IS 11 AR 111905 DI 10.1063/1.2345276 PG 3 WC Physics, Applied SC Physics GA 084PI UT WOS:000240545400031 ER PT J AU Gerung, H Zhao, Y Wang, L Jain, RK Boyle, TJ Brinker, CJ Han, SM AF Gerung, Henry Zhao, Yanrui Wang, Li Jain, Ravinder K. Boyle, Timothy J. Brinker, C. Jeffrey Han, Sang M. TI Two-photon absorption of matrix-free Ge nanocrystals SO APPLIED PHYSICS LETTERS LA English DT Article ID NONLINEAR-OPTICAL-PROPERTIES; VISIBLE PHOTOLUMINESCENCE; SILICA MATRIX; GERMANIUM NANOCRYSTALS; QUANTUM DOTS; BAND-GAP; PULSES; FILMS; SEMICONDUCTORS; PRECURSOR AB The authors demonstrate that solution synthesized Ge nanocrystals (NCs) display a highly nonlinear optical absorption. The Ge NCs with an average diameter of 5 +/- 2 nm are synthesized from germanium(II) bis(trimethylsilyl)amide with hexadecylamine surfactants at 300 degrees C and 1 atm in argon atmosphere. The resulting Ge NCs in a powder form are then dispersed on a silica glass substrate. Femtosecond pulses at 820 nm wavelength from a mode-locked Ti:sapphire laser are used to measure a two-photon absorption coefficient of the deposited Ge NCs. The calculated coefficient ranges from 1190 to 1940 cm/GW. (c) 2006 American Institute of Physics. C1 Univ New Mexico, Dept Chem & Nucl Engn, Farris Engn Ctr 209, Albuquerque, NM 87131 USA. Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA. Sandia Natl Labs, Adv Mat Labs, Albuquerque, NM 87106 USA. RP Gerung, H (reprint author), Univ New Mexico, Dept Chem & Nucl Engn, Farris Engn Ctr 209, Albuquerque, NM 87131 USA. EM meister@unm.edu NR 28 TC 7 Z9 8 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 11 PY 2006 VL 89 IS 11 AR 111107 DI 10.1063/1.2352711 PG 3 WC Physics, Applied SC Physics GA 084PI UT WOS:000240545400007 ER PT J AU Lee, H Baek, IG Vescovo, E AF Lee, Hangil Baek, I. -G. Vescovo, E. TI Spin reorientation transition in Fe-rich alloy films on W(110): The role of magnetoelastic anisotropy and structural transition SO APPLIED PHYSICS LETTERS LA English DT Article ID MAGNETIC ANISOTROPIES; ULTRATHIN FILMS; STRESS; STRAIN AB Epitaxial Fe-rich alloy films of formulas Fe1-xNix, Fe1-xCox, and Fe1-xVx were grown on a W(110) substrate with a bcc structure without any structural transition at x < 0.3. Using chemical pressure (inserting small amounts of Ni, Co, or V into Fe), the authors controlled the lattice constant of these alloy films and then measured the variation of spin reorientation thickness (t(r)) according to the alloy composition. The authors focused on the roles of the lattice constant of the film and the spin reorientation thickness that is closely related to the strain associated with the lattice mismatch between the thin film and the substrate. (c) 2006 American Institute of Physics. C1 POSTECH, Beamline Res Div, Pohang Accelerator Lab, Pohang 790784, South Korea. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Lee, H (reprint author), POSTECH, Beamline Res Div, Pohang Accelerator Lab, Pohang 790784, South Korea. EM easyscan@postech.ac.kr NR 23 TC 11 Z9 11 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 11 PY 2006 VL 89 IS 11 AR 112516 DI 10.1063/1.2354488 PG 3 WC Physics, Applied SC Physics GA 084PI UT WOS:000240545400092 ER PT J AU Lou, J Daigle, A Chen, L Wu, YQ Harris, VG Vittoria, C Sun, NX AF Lou, J. Daigle, A. Chen, L. Wu, Y. Q. Harris, V. G. Vittoria, C. Sun, N. X. TI Single crystal Fe films grown on Ge(001) substrates by magnetron sputtering SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; GE(100); SURFACE; GAAS AB Single crystal Fe films were grown on Ge (001) substrates by using dc magnetron sputtering. It was found that the microstructures and magnetic properties of Fe films on Ge substrates were strongly dependent upon the substrate temperature during the deposition process. There existed a narrow substrate temperature window of 125 +/- 25 degrees C for achieving single crystal Fe film on Ge. Lower substrate temperature led to polycrystalline Fe films due to limited mobility of Fe atoms, while higher substrate temperatures resulted in amorphous Fe-Ge alloy due to severe interdiffusion. (c) 2006 American Institute of Physics. C1 Northeastern Univ, CM3IC, Dept Elect & Comp Engn, Boston, MA 02116 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Sun, NX (reprint author), Northeastern Univ, CM3IC, Dept Elect & Comp Engn, Boston, MA 02116 USA. EM nian@ece.neu.edu RI Harris, Vincent/A-8337-2009; Sun, Nian Xiang/F-9590-2010; Sun, Nian-xiang/G-8330-2011; Lou, Jing/B-6762-2009; Chen, Lei/F-6435-2012 OI Sun, Nian Xiang/0000-0002-3120-0094; NR 16 TC 6 Z9 6 U1 2 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 11 PY 2006 VL 89 IS 11 AR 112501 DI 10.1063/1.2339041 PG 3 WC Physics, Applied SC Physics GA 084PI UT WOS:000240545400077 ER PT J AU Punnoose, A Reddy, KM Hays, J Thurber, A Engelhard, MH AF Punnoose, A. Reddy, K. M. Hays, J. Thurber, A. Engelhard, M. H. TI Magnetic gas sensing using a dilute magnetic semiconductor SO APPLIED PHYSICS LETTERS LA English DT Article ID FERROMAGNETISM; SPINTRONICS; OXIDE AB The authors report on a magnetic gas sensing methodology to detect hydrogen using the ferromagnetic properties of a nanoscale dilute magnetic semiconductor Sn0.95Fe0.05O2. This work demonstrates the systematic variation of saturation magnetization, coercivity, and remanence of Sn0.95Fe0.05O2 with the hydrogen gas flow rate, thus providing clear experimental evidence of the concept of magnetic gas sensing (using the magnetic property of a material as a gas sensing parameter). Based on the results of using hydrogen as an example for reducing gases, it is believed that any reducing gas capable of changing the oxygen stoichiometry of Sn0.95Fe0.05O2 can be detected using this method. Furthermore, this method presents an alternative gas sensing technology without the use of the electrical contacts. (c) 2006 American Institute of Physics. C1 Boise State Univ, Dept Phys, Boise, ID 83725 USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Punnoose, A (reprint author), Boise State Univ, Dept Phys, Boise, ID 83725 USA. EM apunnoos@boisestate.edu RI Engelhard, Mark/F-1317-2010; OI Engelhard, Mark/0000-0002-5543-0812 NR 15 TC 33 Z9 33 U1 1 U2 12 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 11 PY 2006 VL 89 IS 11 AR 112509 DI 10.1063/1.2349284 PG 3 WC Physics, Applied SC Physics GA 084PI UT WOS:000240545400085 ER PT J AU Tiruvalam, R Kundu, A Soukhojak, A Jesse, S Kalinin, SV AF Tiruvalam, Ramchandra Kundu, Animesh Soukhojak, Andrey Jesse, Stephen Kalinin, Sergei V. TI Observing the superparaelectric limit of relaxor (Na1/2Bi1/2)(0.9)Ba0.1TiO3 nanocrystals SO APPLIED PHYSICS LETTERS LA English DT Article ID PIEZORESPONSE FORCE MICROSCOPY; FERROELECTRIC STRUCTURES; POLARIZATION IMPRINT; SIZE; CAPACITORS AB Applications of ferroelectric materials for nonvolatile memory, data storage devices, nanosensors, and nanoactuators necessitate fundamental studies of ferroelectric behavior, including the presence of switchable polarization and switching behavior, on the nanoscale. Here the authors investigated the switching properties of (Na1/2Bi1/2)(0.9)Ba0.1TiO3 nanocrystals prepared by a mist deposition technique using piezoresponse force microscopy (PFM) and spectroscopy. By using stiff cantilevers, reliable PFM data have been obtained and local electromechanical response was measured. The transition from ferroelectric to superparaelectric behavior in these nanocrystals was observed at sizes of similar to 10 nm. The effects of particle shape on the PFM imaging are also discussed. (c) 2006 American Institute of Physics. C1 Lehigh Univ, Bethlehem, PA 18015 USA. Oak Ridge Natl Lab, Condensed Matter Sci Div, Knoxville, TN 37931 USA. RP Soukhojak, A (reprint author), Lehigh Univ, Bethlehem, PA 18015 USA. EM rct204@gmail.com; ansb@lehigh.edu; sergei2@ornl.gov RI Kalinin, Sergei/I-9096-2012; Jesse, Stephen/D-3975-2016 OI Kalinin, Sergei/0000-0001-5354-6152; Jesse, Stephen/0000-0002-1168-8483 NR 20 TC 7 Z9 7 U1 3 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD SEP 11 PY 2006 VL 89 IS 11 AR 112901 DI 10.1063/1.2337880 PG 3 WC Physics, Applied SC Physics GA 084PI UT WOS:000240545400094 ER PT J AU Biener, J Biener, MM Nowitzki, T Hamza, AV Friend, CM Zielasek, V Baumer, M AF Biener, Jurgen Biener, Monika M. Nowitzki, Tobias Hamza, Alex V. Friend, Cynthia M. Zielasek, Volkmar Baeumer, Marcus TI On the role of oxygen in stabilizing low-coordinated au atoms SO CHEMPHYSCHEM LA English DT Article DE catalysis; gold; nanoparticles; scanning probe; microscopy; surface chemistry ID VAPOR-PHASE EPOXIDATION; CARBON-MONOXIDE; GOLD NANOPARTICLES; ELEVATED PRESSURES; AU(110)-(1 X-2); CO ADSORPTION; SURFACE; AU(111); OXIDATION; CATALYSTS C1 Univ Bremen, Inst Angew & Phys Chem, D-28359 Bremen, Germany. Lawrence Livermore Natl Lab, Nanoscale Synth & Characterizat Lab, Livermore, CA 94550 USA. Harvard Univ, Dept Chem, Cambridge, MA 02138 USA. RP Biener, J (reprint author), Univ Bremen, Inst Angew & Phys Chem, Leobener Str NW2, D-28359 Bremen, Germany. EM mbaeumer@uni-bremen.de RI Baumer, Marcus/S-5441-2016 OI Baumer, Marcus/0000-0002-8620-1764 NR 31 TC 34 Z9 34 U1 3 U2 22 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1439-4235 J9 CHEMPHYSCHEM JI ChemPhysChem PD SEP 11 PY 2006 VL 7 IS 9 BP 1906 EP 1908 DI 10.1002/cphc.200600326 PG 3 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 086JD UT WOS:000240668700010 PM 16881088 ER PT J AU Danilov, IG Parham, JF AF Danilov, Igor G. Parham, James F. TI A redescription of 'Plesiochelys' tatsuensis from the Late Jurassic of China, with comments on the antiquity of the crown clade Cryptodira SO JOURNAL OF VERTEBRATE PALEONTOLOGY LA English DT Article ID TURTLES; TESTUDINES; GENUS AB A reexamination of the holotype of 'Plesiochelys' tatsuensis Yeh, 1963, from the Late Jurassic of China, allows us to establish previously unknown characters of this species. A phylogenetic analysis places 'P.' tatsuensis on the stem of Trionychia, near the clades Adocidae and Nanhsiungchelyidae. Given the hypothesized phylogenetic position of 'P.' tatsuensis, a new genus, Yehguia gen. nov., is erected for this species. The phylogenetic position of Y. tatsuensis pushes the origin of the crown clade Cryptodira into the Late Jurassic. This is remarkable in light of recent studies that moved the origin of crown group turtles (Testudines) from the Triassic to the Late Jurassic. This means that the establishment of basal cryptodiran lineages must have quickly followed the origin of Testudines in the Late Jurassic. The fact that the must ancient fossil Cryptodira is hypothesized to be on the stem of Trionychia is concordant with recent molecular hypotheses that place Trionychia as the most basal extant lineage of Cryptodira. Finally, our results further highlight that the Late Jurassic of China is important for understanding the earliest evolution of cryptodiran turtles. C1 Russian Acad Sci, Inst Zool, Dept Herpetol, St Petersburg 199034, Russia. Univ Calif Berkeley, Museum Paleontol, Berkeley, CA 94720 USA. Joint Genome Inst, Evolutionary Genom Dept, Walnut Creek, CA 94598 USA. RP Danilov, IG (reprint author), Russian Acad Sci, Inst Zool, Dept Herpetol, Univ Skaya Emb 1, St Petersburg 199034, Russia. EM dig@mail333.com; parham@socrates.berkeley.edu NR 50 TC 35 Z9 42 U1 1 U2 3 PU SOC VERTEBRATE PALEONTOLOGY PI NORTHBROOK PA 60 REVERE DR, STE 500, NORTHBROOK, IL 60062 USA SN 0272-4634 J9 J VERTEBR PALEONTOL JI J. Vertebr. Paleontol. PD SEP 11 PY 2006 VL 26 IS 3 BP 573 EP 580 DI 10.1671/0272-4634(2006)26[573:AROPTF]2.0.CO;2 PG 8 WC Paleontology SC Paleontology GA 085NB UT WOS:000240609700009 ER PT J AU Heymans, C White, M Heavens, A Vale, C Van Waerbeke, L AF Heymans, Catherine White, Martin Heavens, Alan Vale, Chris Van Waerbeke, Ludovic TI Potential sources of contamination to weak lensing measurements: constraints from N-body simulations SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE gravitational lensing; cosmology : observations; large-scale structure of Universe ID LARGE-SCALE STRUCTURE; INTRINSIC GALAXY ALIGNMENT; COSMIC SHEAR STATISTICS; COLD DARK-MATTER; LUMINOSITY FUNCTION; DENSITY CORRELATION; ANGULAR-MOMENTUM; COMBO-17 SURVEY; POWER SPECTRUM; TIDAL TORQUES AB We investigate the expected correlation between the weak gravitational shear of distant galaxies and the orientation of foreground galaxies, through the use of numerical simulations. This shear-ellipticity correlation can mimic a cosmological weak lensing signal, and is potentially the limiting physical systematic effect for cosmology with future high-precision weak lensing surveys. We find that, if uncorrected, the shear-ellipticity correlation could contribute up to 10 per cent of the weak lensing signal on scales up to 20 arcmin, for lensing surveys with a median depth z(m) = 1. The most massive foreground galaxies are expected to cause the largest correlations, a result also seen in the Sloan Digital Sky Survey. We find that the redshift dependence of the effect is proportional to the lensing efficiency of the foreground, and this offers prospects for removal to high precision, although with some model dependence. The contamination is characterized by a weakly negative B mode, which can be used as a diagnostic of systematic errors. We also provide more accurate predictions for a second potential source of error, the intrinsic alignment of nearby galaxies. This source of contamination is less important, however, as it can be easily removed with distance information. C1 Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. Univ Calif Berkeley, Dept Phys & Astron, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Edinburgh, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Heymans, C (reprint author), Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada. EM heymans@physics.ubc.ca RI White, Martin/I-3880-2015 OI White, Martin/0000-0001-9912-5070 NR 57 TC 91 Z9 91 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 SEP 11 PY 2006 VL 371 IS 2 BP 750 EP 760 DI 10.1111/j.1365-2966.2006.10705.x PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 079TQ UT WOS:000240201200022 ER PT J AU Karshtedt, D Bell, AT Tilley, TD AF Karshtedt, Dmitry Bell, Alexis T. Tilley, T. Don TI Stoichiometric and catalytic reactions involving Si-H bond activations by Rh and Ir complexes containing a pyridylindolide ligand SO ORGANOMETALLICS LA English DT Review ID TRANSITION-METAL-COMPLEXES; OXIDATIVE ADDITION-REACTIONS; CROSS-COUPLING REACTIONS; C-H; REDUCTIVE ELIMINATION; X-RAY; IRIDIUM COMPLEXES; SILANE COMPLEXES; ARYL HALIDES; PALLADIUM(0)-CATALYZED SILYLATION AB New rhodium and iridium complexes containing the bidentate, monoanionic 2-(2'-pyridyl)indolide (PyInd) ligand were prepared. The bis(ethylene) complex (PyInd) Rh(C2H4)(2) (3) reacted with triethylsilane at 60 degrees C to produce the 16-electron Rh(V) bis(silyl) dihydride complex (PyInd) RhH2(SiEt3)(2) (4). Both 3 and 4 catalyzed the chloride transfer reaction of chlorobenzene and Et3SiH to give Et3SiCl and benzene in the absence of base. In the presence of (LiNPr2)-Pr-i, catalytic C-Si coupling was observed, to produce Et3SiPh. Analogous Ir complexes of the type (PyInd) IrH2(SiR3)(2), where R-3) Et-3 (6a), Me2Ph (6b), Ph2Me (6c), or Ph-3 (6d), were not catalytically active in this chloride transfer chemistry. The molecular structure of 6c, determined by X-ray crystallography, may be described as having a highly unusual bicapped tetrahedral geometry. DFT calculations indicate that this distortion is associated with the d(4) electron count and the presence of highly trans-influencing silyl ligands. The reaction of 6a with PMe3 (5 equiv) produced (PyInd) IrH(SiEt3)(PMe3)(2) (7), while the reaction with PPh3 (1 equiv) generated a mixture of isomers that was converted to (PyInd) IrH(SiEt3)(PPh3) (8) upon heating in benzene at 80 degrees C. Complexes 7 and 8 exhibit regular octahedral and distorted square pyramidal geometries, respectively. C1 Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Bell, AT (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. EM tdtilley@berkeley.edu OI Bell, Alexis/0000-0002-5738-4645 NR 121 TC 53 Z9 53 U1 6 U2 34 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0276-7333 J9 ORGANOMETALLICS JI Organometallics PD SEP 11 PY 2006 VL 25 IS 19 BP 4471 EP 4482 DI 10.1021/om060492+ PG 12 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA 083NV UT WOS:000240465400007 ER PT J AU Wu, F AF Wu, Fan TI Mechanistic study of metal catalyzed insertion polymerization and ionic hydrogenation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wu, Fan] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 38-AEI BP 10 EP 10 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600008 ER PT J AU Siepmann, JI McGrath, MJ Kuo, IFW Mundy, CJ VandeVondele, J Hutter, J Mohamed, F Krack, M AF Siepmann, J. Ilja McGrath, Matthew J. Kuo, I-Feng W. Mundy, Christopher J. VandeVondele, Joost Hutter, Juerg Mohamed, Fawzi Krack, Matthias TI Simulating fluid phase equilibria and aggregation from first principles: Water, methanol, and hydrogen fluoride SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Siepmann, J. Ilja; McGrath, Matthew J.] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA. [Siepmann, J. Ilja] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA. [Kuo, I-Feng W.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Mundy, Christopher J.] Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. [VandeVondele, Joost] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England. [Hutter, Juerg] Univ Zurich, Inst Phys Chem, CH-8057 Zurich, Switzerland. [Mohamed, Fawzi; Krack, Matthias] ETH, Dept Chem, Zurich, Switzerland. NR 0 TC 0 Z9 0 U1 2 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 426-COMP BP 11 EP 11 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604008 ER PT J AU Bennion, BJ Kulp, KS Montgomery, JL Lightstone, FC Knize, MG Bennett, LM Felton, JS AF Bennion, Brian J. Kulp, Kristen S. Montgomery, Jennifer L. Lightstone, Felice C. Knize, Mark G. Bennett, L. Michelle Felton, James S. TI Computational characterization and prediction of estrogen receptor coactivator binding inhibitors SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bennion, Brian J.; Kulp, Kristen S.; Montgomery, Jennifer L.; Lightstone, Felice C.; Knize, Mark G.; Felton, James S.] Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94550 USA. [Bennett, L. Michelle] NCI, NIH, Bethesda, MD 20892 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 8-COMP BP 12 EP 12 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604009 ER PT J AU Huang, KW AF Huang, Kuo-Wei TI Part I: Generating Ti(III) species through Ti-O bond homolysis: Thermodynamics, kinetics, and applications. Part II: Photo- and thermochemical activations of small molecules SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Huang, Kuo-Wei] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 55-AEI BP 13 EP 13 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600011 ER PT J AU Brinas, RP Hainfeld, JF Hu, MH Qian, LP Lymar, E Trachtenberg, S AF Brinas, Raymond P. Hainfeld, James F. Hu, Minghui Qian, LuPing Lymar, Elena Trachtenberg, Shlomo TI Site-specific labeling of biomolecules using gold nanoparticles with modified glutathione as ligand SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Brinas, Raymond P.; Hainfeld, James F.; Hu, Minghui; Qian, LuPing; Lymar, Elena] Brookhaven Natl Lab, Upton, NY 11973 USA. [Trachtenberg, Shlomo] Hebrew Univ Jerusalem, Hadassah Med Sch, Dept Membrane & Ultrastruct Res, IL-91220 Jerusalem, Israel. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 77-AEI BP 26 EP 26 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600024 ER PT J AU Schelter, EJ Veauthier, JM Scott, BL John, KD Thompson, JD Morris, DE Kiplinger, JL AF Schelter, Eric J. Veauthier, Jacqueline M. Scott, Brian L. John, Kevin D. Thompson, J. D. Morris, David E. Kiplinger, Jaqueline L. TI Metal-metal interactions in actinide and mixed f-element complexes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Schelter, Eric J.; Veauthier, Jacqueline M.; Scott, Brian L.; John, Kevin D.; Morris, David E.; Kiplinger, Jaqueline L.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. [Thompson, J. D.] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. [Morris, David E.] GT Seaborg Inst, Los Alamos, NM 87545 USA. RI Schelter, Eric/E-2962-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 53-AEI BP 36 EP 36 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600034 ER PT J AU Paguio, RR Czechowicz, DG Nikroo, A Takagi, M AF Paguio, Reny R. Czechowicz, Don G. Nikroo, Abbas Takagi, Masaru TI PMSE 452-Layer-by-layer assembly of thin nanocomposite oxygen barrier SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Paguio, Reny R.; Czechowicz, Don G.; Nikroo, Abbas] Gen Atom Co, Inertial Fus Technol, San Diego, CA 92186 USA. [Takagi, Masaru] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 488-PMSE BP 40 EP 40 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700035 ER PT J AU Kraft, ML Weber, PK Longo, ML Hutcheon, ID Boxer, SG AF Kraft, Mary L. Weber, Peter K. Longo, Marjorie L. Hutcheon, Ian D. Boxer, Steven G. TI Chemical imaging of phase-separated lipid membranes by secondary ion mass spectrometry SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kraft, Mary L.; Boxer, Steven G.] Stanford Univ, Dept Chem, Stanford, CA 94305 USA. [Weber, Peter K.; Hutcheon, Ian D.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Longo, Marjorie L.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 81-AEI BP 42 EP 42 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600040 ER PT J AU Salazar, MR Kress, JD Kendrick, BK Pack, RT Pauler, DK Lightfoot, JM Rodin, WA Woods, L Russell, BG AF Salazar, Michael R. Kress, Joel D. Kendrick, Brian K. Pack, Russell T. Pauler, Denise K. Lightfoot, J. Michael Rodin, Wayne A. Woods, Loreli Russell, Bobby G. TI PMSE 524-Electrochemical preparation of elastic conductive films with polypyrrole and tri-block polyelectrolyte SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Salazar, Michael R.] Union Univ, Dept Chem, Jackson, TN 38305 USA. [Kress, Joel D.; Kendrick, Brian K.; Pack, Russell T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Pauler, Denise K.] Cornell Univ, Dept Chem, Ithaca, NY 14853 USA. [Lightfoot, J. Michael; Rodin, Wayne A.; Woods, Loreli; Russell, Bobby G.] BWXT Pantex LLC, Appl Technol Div, Pantex Plant, Amarillo, TX USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 522-PMSE BP 44 EP 44 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700039 ER PT J AU Wick, CD Dang, LX AF Wick, Collin D. Dang, Liem X. TI Computational studies of environmentally important interfaces SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wick, Collin D.; Dang, Liem X.] Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 83-AEI BP 49 EP 49 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600046 ER PT J AU Whitfield, TW Roux, B AF Whitfield, Troy W. Roux, Benoit TI Polarizable divalent cations for biomolecular modeling SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Whitfield, Troy W.] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. [Roux, Benoit] Univ Chicago, Inst Mol Pediat Sci, Ctr Integrat Sci, Chicago, IL 60637 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 334-COMP BP 50 EP 50 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604046 ER PT J AU Klaehn, JR Orme, CJ Luther, TA Peterson, ES Berchtold, KA Young, JS Greenberg, AR Brahmandam, S Acquaviva, J Onorato, F Hopkins, SD AF Klaehn, John R. Orme, Christopher J. Luther, Thomas A. Peterson, Eric S. Berchtold, Kathryn A. Young, Jennifer S. Greenberg, Alan R. Brahmandam, Sudhir Acquaviva, Jim Onorato, Frank Hopkins, Scott D. TI PMSE 268-Development of a microcolumn device for column chromatography on a microfluidics platform SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Klaehn, John R.; Orme, Christopher J.; Luther, Thomas A.; Peterson, Eric S.] Idaho Natl Lab, Dept Chem Sci, Idaho Falls, ID 83415 USA. [Berchtold, Kathryn A.; Young, Jennifer S.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. [Greenberg, Alan R.; Brahmandam, Sudhir] Univ Colorado, Dept Mech Engn, Idaho Falls, ID 83415 USA. [Acquaviva, Jim; Onorato, Frank; Hopkins, Scott D.] Pall Corp, E Hills, NY 11548 USA. RI Peterson, Eric/B-9127-2017 OI Peterson, Eric/0000-0002-2292-4939 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 198-PMSE BP 56 EP 56 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700051 ER PT J AU Rhee, YM Head-Gordon, M AF Rhee, Young M. Head-Gordon, Martin TI RI-CIS(D): Efficient perturbative correction on CIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Rhee, Young M.; Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Head-Gordon, Martin] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 283-COMP BP 57 EP 57 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604053 ER PT J AU Kilina, SV Tretiak, S AF Kilina, Svetlana V. Tretiak, Sergei TI Exciton localization in semiconductor carbon nanotubes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kilina, Svetlana V.] Univ Washington, Dept Chem, Seattle, WA 98195 USA. [Tretiak, Sergei] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 32-AEI BP 71 EP 71 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600067 ER PT J AU Elles, CG Crowell, RA Shkrob, IA Bradforth, SE AF Elles, Christopher G. Crowell, Robert A. Shkrob, Ilya A. Bradforth, Stephen E. TI Excited state dynamics of pure liquid water: Ionization and dissociation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Elles, Christopher G.; Crowell, Robert A.; Shkrob, Ilya A.] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. [Bradforth, Stephen E.] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA. RI Bradforth, Stephen/B-5186-2008 OI Bradforth, Stephen/0000-0002-6164-3347 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 85-AEI BP 74 EP 74 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600070 ER PT J AU Porter-Chapman, Y Bourret-Courschesne, E Weber, M Derenzo, S AF Porter-Chapman, Yetta Bourret-Courschesne, Edith Weber, Marvin Derenzo, Stephen TI Bismuth (III) luminescence in Sillen phases SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Porter-Chapman, Yetta; Weber, Marvin; Derenzo, Stephen] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Dept Funct Imaging, Berkeley, CA 94720 USA. [Bourret-Courschesne, Edith] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 40-AEI BP 85 EP 85 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600081 ER PT J AU Krisch, MJ Brown, MA Hemminger, JC D'Auria, R Callahan, KM Tobias, DJ Ammann, M Bluhm, H AF Krisch, Maria J. Brown, Matthew A. Hemminger, John C. D'Auria, Raffaella Callahan, Karen M. Tobias, Douglas J. Ammann, Markus Bluhm, Hendrik TI Impact of an alcohol on the depth profile of ion concentrations at the aqueous liquid-vapor interface SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Krisch, Maria J.; Brown, Matthew A.; Hemminger, John C.; D'Auria, Raffaella; Callahan, Karen M.; Tobias, Douglas J.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. [Krisch, Maria J.; Brown, Matthew A.; Hemminger, John C.; D'Auria, Raffaella; Callahan, Karen M.; Tobias, Douglas J.] Univ Calif Irvine, AirUCI, Irvine, CA 92697 USA. [Ammann, Markus] Paul Scherrer Inst, Lab Radio & Environm Chem, CH-5232 Villigen, Switzerland. [Bluhm, Hendrik] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 26-AEI BP 86 EP 86 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600082 ER PT J AU Mitchell, WJ Kopidakis, N Rance, WL Rumbles, G Ginley, DS Shaheen, SE AF Mitchell, William J. Kopidakis, Nikos Rance, William L. Rumbles, G. Ginley, David S. Shaheen, Sean E. TI PMSE 30-Metrological measurement of the characteristic cylinder spacings in thin block copolymer films SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Mitchell, William J.; Kopidakis, Nikos; Rumbles, G.; Ginley, David S.; Shaheen, Sean E.] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Rance, William L.] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. RI Kopidakis, Nikos/N-4777-2015; Shaheen, Sean/M-7893-2013 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 253-PMSE BP 104 EP 104 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700099 ER PT J AU Manaa, MR Reed, E Glaesemann, K Fried, L AF Manaa, M. Riad Reed, Evan Glaesemann, Kurt Fried, Laurence TI Application of SCC-tight-binding to reactive systems at extreme conditions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Manaa, M. Riad; Reed, Evan; Glaesemann, Kurt; Fried, Laurence] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 163-COMP BP 109 EP 109 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604105 ER PT J AU Zapol, P Sternberg, M Curtiss, LA Gruen, DM Kedziora, GS Horner, DA Redfern, PC AF Zapol, Peter Sternberg, Michael Curtiss, L. A. Gruen, D. M. Kedziora, Gary S. Horner, David A. Redfern, Paul C. TI Carbon ad-dimer interactions with nanocarbons as a route to new materials SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Zapol, Peter; Sternberg, Michael; Curtiss, L. A.; Gruen, D. M.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Zapol, Peter; Curtiss, L. A.; Redfern, Paul C.] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. [Kedziora, Gary S.] High Performance Technon Inc, User Prod Enhancement & Technol Transfer, Wright Patterson AFB, OH 45433 USA. [Horner, David A.] N Cent Coll, Dept Chem, Naperville, IL 60540 USA. RI Zapol, Peter/G-1810-2012 OI Zapol, Peter/0000-0003-0570-9169 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 160-COMP BP 145 EP 145 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604141 ER PT J AU Sternberg, M Zhang, H Smith, B Zapol, P AF Sternberg, Michael Zhang, Hong Smith, Barry Zapol, Peter TI SIPs: Tailored parallelization of the generalized symmetric eigenproblem SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Sternberg, Michael; Zapol, Peter] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Zhang, Hong] Illinois Inst Technol, Dept Comp Sci, Chicago, IL 60616 USA. [Smith, Barry] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. [Zapol, Peter] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RI Zapol, Peter/G-1810-2012 OI Zapol, Peter/0000-0003-0570-9169 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 340-COMP BP 147 EP 147 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604143 ER PT J AU Sodt, AJ Head-Gordon, M AF Sodt, Alex J. Head-Gordon, Martin TI Local fitting of integrals for efficient electronic structure calculations SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Sodt, Alex J.; Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Head-Gordon, Martin] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 422-COMP BP 173 EP 173 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604169 ER PT J AU Steckel, JA AF Steckel, Janice A. TI Ab initio modeling of the interaction of mercury with aromatic molecules SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Steckel, Janice A.] Parsons Projects Inc, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 85-COMP BP 189 EP 189 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604185 ER PT J AU McGrath, MJ Siepmann, JI Kuo, IFW Mundy, CJ AF McGrath, Matthew J. Siepmann, J. Ilja Kuo, I-Feng W. Mundy, Christopher J. TI First principles simulations of vapor-liquid equilibria: Application to methanol SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [McGrath, Matthew J.; Siepmann, J. Ilja] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA. [Siepmann, J. Ilja] Univ Minnesota, Dept Chem Engn, Minneapolis, MN 55455 USA. [Siepmann, J. Ilja] Univ Minnesota, Dept Mat Sci, Minneapolis, MN 55455 USA. [Kuo, I-Feng W.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Mundy, Christopher J.] Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 336-COMP BP 200 EP 200 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604196 ER PT J AU Dutoi, AD Dreuw, A Head-Gordon, M AF Dutoi, Anthony D. Dreuw, Andreas Head-Gordon, Martin TI Inclusion of long-range exchange in TD-DFT: Towards a quantitative charge-transfer model SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Dutoi, Anthony D.; Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Dreuw, Andreas] Goethe Univ Frankfurt, Inst Phys & Theoret Chem, D-6000 Frankfurt, Germany. [Head-Gordon, Martin] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RI Fachbereich14, Dekanat/C-8553-2015 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 88-COMP BP 202 EP 202 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604198 ER PT J AU Kenny, JP Janssen, CL Windus, TL Valeev, EF AF Kenny, Joseph P. Janssen, Curtis L. Windus, Theresa L. Valeev, Edward F. TI Low-level integration of quantum chemistry software: Component-based molecular integral evaluation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kenny, Joseph P.; Janssen, Curtis L.] Sandia Natl Labs, Livermore, CA 94551 USA. [Windus, Theresa L.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA. [Valeev, Edward F.] Oak Ridge Natl Lab, Sch Chem & Biochem, Georgia Inst Technol, Atlanta, GA 30332 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 423-COMP BP 210 EP 210 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604206 ER PT J AU Yang, L Misner, MJ Zhang, MF Russell, TP Ocko, BM AF Yang, Ling Misner, Matthew J. Zhang, Mingfu Russell, Thomas P. Ocko, Benjamin M. TI PMSE 210-Sub-micron patterning of polymers by covalent functionalization SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Yang, Ling; Misner, Matthew J.; Zhang, Mingfu; Russell, Thomas P.] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA. [Ocko, Benjamin M.] Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 31-PMSE BP 222 EP 222 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700215 ER PT J AU Kuo, IFW Mundy, CJ McGrath, MJ Siepmann, JI AF Kuo, I-Feng W. Mundy, Christopher J. McGrath, Matthew J. Siepmann, J. Ilja TI Surface phenomenon at the liquid/vapor interface of water and methanol from first principles simulation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Mundy, Christopher J.] Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94551 USA. [McGrath, Matthew J.; Siepmann, J. Ilja] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA. [Siepmann, J. Ilja] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 47-COMP BP 223 EP 223 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604219 ER PT J AU Deng, YQ Roux, B AF Deng, Yuqing Roux, Benoit TI Binding free energy calculations in the polar and nonpolar T4 lysozyme mutants SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Deng, Yuqing] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. [Roux, Benoit] Univ Chicago, Dept Biochem & Mol Biol, Ctr Integrat Sci, Chicago, IL 60637 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 403-COMP BP 235 EP 235 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604231 ER PT J AU Nozik, AJ Ellingson, RJ Beard, MC Johnson, JC Murphy, JE Efros, A Shabaev, A AF Nozik, Arthur J. Ellingson, Randy J. Beard, Matthew C. Johnson, Justin C. Murphy, James E. Efros, Alexander Shabaev, Andrew TI PMSE 31-Salt complexation in diblock copolymer thin films SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Nozik, Arthur J.; Ellingson, Randy J.; Beard, Matthew C.; Johnson, Justin C.; Murphy, James E.] Natl Renewable Energy Lab, Ctr Basic Sci, Golden, CO 80401 USA. [Efros, Alexander; Shabaev, Andrew] USN, Ctr Computat Mat Sci, Res Lab, Washington, DC 20375 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 92-PMSE BP 241 EP 241 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700234 ER PT J AU Valiev, M AF Valiev, Marat TI QM/MM methods for large scale biochemical simulations: Implementation in NWChem computational chemistry package SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Valiev, Marat] Pacific NW Natl Lab, EMSL, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 56-COMP BP 257 EP 257 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604253 ER PT J AU Head, JD Ge, YB AF Head, John D. Ge, Yingbin TI Theoretical investigation of the low energy structures of Si(x)L(y) clusters SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Head, John D.] Univ Hawaii, Dept Chem, Honolulu, HI 96822 USA. [Ge, Yingbin] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 291-COMP BP 278 EP 278 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604274 ER PT J AU Kuo, IFW Mundy, CJ AF Kuo, I-Feng W. Mundy, Christopher J. TI Electronic polarization in the enzymatic pocket of ODCase through first principles molecular dynamics simulation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kuo, I-Feng W.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Mundy, Christopher J.] Lawrence Livermore Natl Lab, Mat Sci Directorate, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 45-COMP BP 288 EP 288 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604284 ER PT J AU McKelvey, JM Tretiak, S AF McKelvey, John M. Tretiak, Sergei TI A comparison of ground and excited state properties using SCC-DFTB and semiempirical methods SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [McKelvey, John M.] McKelvey Computat Chem, Ft Wayne, IN 46818 USA. [Tretiak, Sergei] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 309-COMP BP 309 EP 309 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604305 ER PT J AU Gomez, ED Wilbur, JD Ellsworth, MW Pople, JA Balsara, NP AF Gomez, Enrique D. Wilbur, Jeffrey D. Ellsworth, Mark W. Pople, John A. Balsara, Nitash P. TI PMSE 354-Fibronectin-coated nano-precipitates of calcium-magnesium phosphate for integrin-targeted gene delivery SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Gomez, Enrique D.; Wilbur, Jeffrey D.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Ellsworth, Mark W.] Tyco Elect Corp, Menlo Pk, CA 94025 USA. [Pople, John A.] Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. [Balsara, Nitash P.] Univ Calif Berkeley, Environm Energy Technol Div, Dept Chem Engn, Berkeley, CA 94720 USA. [Balsara, Nitash P.] Univ Calif Berkeley, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 474-PMSE BP 342 EP 342 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700334 ER PT J AU Singh, M Odusanya, O Balsara, NP AF Singh, Mohit Odusanya, Omolola Balsara, Nitash P. TI PMSE 404-Preparation and characterization of poly(4-aminobenzoic acid) grafted MWNT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Singh, Mohit; Odusanya, Omolola] Univ Calif Berkeley, Environm Energy Technol Div, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Odusanya, Omolola] Univ Calif Berkeley, Dept Chem Engn, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Balsara, Nitash P.] Univ Calif Berkeley, Dept Chem Engn, Environm Energy Technol Div, Berkeley, CA 94720 USA. [Balsara, Nitash P.] Univ Calif Berkeley, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 472-PMSE BP 366 EP 366 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700357 ER PT J AU Zhang, T Simens, AS Minor, A Liu, G AF Zhang, Ting Simens, Amanda S. Minor, Andrew Liu, Gao TI PMSE 363-Investigation of dispersion states of soy protein isolates in the DMSO/urea SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Zhang, Ting; Simens, Amanda S.; Minor, Andrew; Liu, Gao] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 334-PMSE BP 369 EP 369 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700360 ER PT J AU Taylor, CE AF Taylor, Charles E. TI Computational modeling of methane hydrates at NETL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Taylor, Charles E.] US DOE, NETL, Pittsburgh, PA 15236 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 215-COMP BP 395 EP 395 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604391 ER PT J AU Amador-Bedolla, C Salomon-Ferrer, R Aspuru-Guzik, A Vazquez-Martinez, JA Lester, WA AF Amador-Bedolla, Carlos Salomon-Ferrer, Romelia Aspuru-Guzik, Alan Alfredo Vazquez-Martinez, Jose Lester, William A., Jr. TI Reagents for electrophilic amination: A quantum Monte Carlo theoretical study SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Amador-Bedolla, Carlos; Alfredo Vazquez-Martinez, Jose] Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico. [Salomon-Ferrer, Romelia; Lester, William A., Jr.] Univ Calif Berkeley, Lawrence Berkeley Lab, Kenneth S Pitzer Ctr Theoret Chem, Div Chem Sci,Dept Chem, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 90-COMP BP 412 EP 412 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604408 ER PT J AU Schrier, J Demchenko, D Wang, LW AF Schrier, Joshua Demchenko, Denis Wang, Lin-Wang TI Applications of the charge patching approach to individually heterostructured semiconductor nanocrystals SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Schrier, Joshua; Demchenko, Denis; Wang, Lin-Wang] Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 111-COMP BP 415 EP 415 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604411 ER PT J AU Celina, MC Gillen, KT AF Celina, Mathew C. Gillen, Kenneth T. TI Thermal degradation as a function of temperature and its relevance to lifetime prediction and condition monitoring SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Celina, Mathew C.; Gillen, Kenneth T.] Sandia Natl Labs, Organ Mat Dept, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 3 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 115-PMSE BP 482 EP 482 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700473 ER PT J AU Choi, J Meldrum, D Saripalli, KP Lee, JY AF Choi, Jaeyoung Meldrum, Deirdre Saripalli, K. Prasad Lee, Ju-young TI Development of cellular absorptive tracers (CATs) for a quantitative characterization of the complexity of nanoscale biological systems SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Choi, Jaeyoung; Lee, Ju-young] Korea Inst Sci & Technol, Daejeon Dong 210340, Gangneung, South Korea. [Meldrum, Deirdre] Univ Washington, Dept Elect Engn, Paul Allen Ctr, Seattle, WA 98195 USA. [Saripalli, K. Prasad] Battelle Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 169-ENVR BP 504 EP 504 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604435 ER PT J AU Wang, HL Li, WG Jia, QX Akhadov, EA AF Wang, Hsing-Lin Li, Wenguang Jia, Q. X. Akhadov, Elshan A. TI PMSE 156-Hydrolytic degradation in polymeric materials: Exposure testing and service life prediction of automotive components SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wang, Hsing-Lin; Li, Wenguang; Jia, Q. X.; Akhadov, Elshan A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RI Jia, Q. X./C-5194-2008 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 228-PMSE BP 508 EP 508 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700499 ER PT J AU Coby, AJ Cooper, DC Picardal, FW AF Coby, Aaron J. Cooper, D. Craig Picardal, Flynn W. TI Inhibition of NO(3)(-) and NO(2)(-) reduction by microbial Fe(III) reduction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Coby, Aaron J.] Univ Wisconsin, Dept Geol & Geophys, Madison, WI 53706 USA. [Cooper, D. Craig] Idaho Natl Lab, Idaho Falls, ID 83404 USA. [Picardal, Flynn W.] Indiana Univ, Sch Publ & Environm Affairs, Bloomington, IN 47405 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 30-ENVR BP 515 EP 515 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604446 ER PT J AU Yang, PD AF Yang, Peidong TI PMSE 576-Edible, disposable composite films of pectin and fish gelatin or soybean protein SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Yang, Peidong] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Yang, Peidong] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 511-PMSE BP 547 EP 547 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700538 ER PT J AU Yang, PD AF Yang, Peidong TI PMSE 59-Polythiophene-based diblock copolymers for controlled morphologies in organic photovoltaics SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Yang, Peidong] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Yang, Peidong] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 230-PMSE BP 548 EP 548 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700539 ER PT J AU Anderson, J Lorenz, CD Travesset, A AF Anderson, Joshua Lorenz, Christian D. Travesset, Alex TI PMSE 147-Scratch-resistant nanocomposite coatings SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Anderson, Joshua; Travesset, Alex] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Lorenz, Christian D.] Ames Lab, Dept Phys & Astron, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 475-PMSE BP 558 EP 558 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700549 ER PT J AU Holmes, MA Mackay, ME Giunta, RK AF Holmes, Melissa A. Mackay, Michael E. Giunta, Rachel K. TI PMSE 302-Design and synthesis of water-stable aliphatic polycarbodiimides that hydrolyze under controlled catalytic conditions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Holmes, Melissa A.; Mackay, Michael E.] Michigan State Univ, Dept Chem Engn & Mat Sci, E Lansing, MI 48824 USA. [Giunta, Rachel K.] Sandia Natl Labs, Organ Mat Dept, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 73-PMSE BP 584 EP 584 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700575 ER PT J AU Wellman, D Mattigod, SV Fryxell, GE Clayton, LN Glovack, JN Parker, KE AF Wellman, Dawn Mattigod, Shas V. Fryxell, Glen E. Clayton, Libby N. Glovack, Julia N. Parker, Kent E. TI Nanoporous transition metal phosphate materials for sequestration of redox sensitive contaminants SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Fryxell, Glen E.] Pacific NW Natl Lab, Mat Synth Grp, Richland, WA 99352 USA. [Clayton, Libby N.] Washington State Univ, Dept Chem Engn, Pullman, WA 99164 USA. [Glovack, Julia N.] SUNY Coll Fredonia, Dept Chem, Fredonia, NY 14063 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 96-ENVR BP 585 EP 585 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604516 ER PT J AU Khanna, V Cochran, EW Hexemer, A Stein, GE Fredrickson, G Kramer, EJ Hahn, SF Li, XF Wang, J AF Khanna, Vikram Cochran, Eric W. Hexemer, Alexander Stein, Gila E. Fredrickson, Glenn Kramer, Edward J. Hahn, Stephen F. Li, Xuefa Wang, Jin TI PMSE 338-Crosslinked-sulfonated polyimide-inorganic oxide nanocomposite membranes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Khanna, Vikram; Stein, Gila E.] Univ Calif Santa Barbara, Dept Mat, Mat Res Lab, Santa Barbara, CA 93106 USA. [Cochran, Eric W.] Iowa State Univ, Dept Chem & Biol Engn, Ames, IA 50011 USA. [Fredrickson, Glenn] Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93103 USA. [Fredrickson, Glenn] Univ Calif Santa Barbara, Mitsubishi Ctr Adv Mat, Santa Barbara, CA 93103 USA. [Kramer, Edward J.] Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA. [Hahn, Stephen F.] Dow Chem Co USA, Corp Res & Dev, Freeport, TX USA. [Li, Xuefa; Wang, Jin] Argonne Natl Lab, Expt Facil Div, Argonne, IL 60439 USA. RI Stein, Gila/P-1927-2016 OI Stein, Gila/0000-0002-3973-4496 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 25-PMSE BP 615 EP 615 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781700605 ER PT J AU Komlos, J Kukkadapu, RK Zachara, JM Jaffe, PR AF Komlos, John Kukkadapu, Ravi K. Zachara, John M. Jaffe, Peter R. TI Re-oxidation of uranium precipitated during long-term iron/uranium reducing conditions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Komlos, John; Jaffe, Peter R.] Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA. [Kukkadapu, Ravi K.; Zachara, John M.] Pacific NW Natl Lab, Richland, WA 99354 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 35-ENVR BP 675 EP 675 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604606 ER PT J AU Pestovsky, O Bakac, AA AF Pestovsky, Oleg Bakac, Andrej A. TI Identification and characterization of aqueous ferryl(IV) ion SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Pestovsky, Oleg; Bakac, Andrej A.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 0 TC 1 Z9 1 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 37-ENVR BP 682 EP 682 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604613 ER PT J AU Hah, SS Mundt, JM Henderson, PT AF Hah, Sang Soo Mundt, Janna M. Henderson, Paul T. TI Mechanistic considerations of 8-oxoguanine incorporation into DNA and RNA from the nucleotide pool in human breast cancer cells SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hah, Sang Soo; Mundt, Janna M.] Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94551 USA. [Henderson, Paul T.] Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 132-BIOL BP 694 EP 694 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600598 ER PT J AU Cabelli, DE Sharma, VK AF Cabelli, Diane E. Sharma, Virender K. TI Aqueous high oxidation state iron: Generation and reactivity SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cabelli, Diane E.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. [Sharma, Virender K.] Florida Inst Technol, Dept Chem, Melbourne, FL 32901 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 36-ENVR BP 756 EP 756 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604687 ER PT J AU DeRose, VJ Kim, NK Murali, A Bowman, MK Green, K AF DeRose, Victoria J. Kim, Nak-Kyoon Murali, Ayaluru Bowman, Michael K. Green, Kathryn TI Metal-dependent folding and catalysis in ribozymes: Applications of SDSL and EPR spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [DeRose, Victoria J.; Green, Kathryn] Univ Oregon, Dept Chem, Eugene, OR 97403 USA. [Kim, Nak-Kyoon; Murali, Ayaluru] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA. [Bowman, Michael K.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Bowman, Michael/F-4265-2011 OI Bowman, Michael/0000-0003-3464-9409 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 133-BIOL BP 791 EP 791 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600694 ER PT J AU Holladay, J Brooks, KP Humble, PH Lilley, BP Hu, JL Simon, T AF Holladay, Jamie Brooks, Kriston P. Humble, Paul H. Lilley, Brian P. Hu, Jianli Simon, Thomas TI Rocket propellant production on Mars using microchannel technology SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Holladay, Jamie; Brooks, Kriston P.; Humble, Paul H.; Lilley, Brian P.] Pacific NW Div, Richland, WA 99352 USA. [Hu, Jianli] Pacific NW Natl Lab, Richland, WA 99352 USA. [Simon, Thomas] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA. RI Humble, Paul/K-1961-2012; Humble, Paul/E-4766-2015 OI Humble, Paul/0000-0002-2632-6557; NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 139-IEC BP 817 EP 817 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604705 ER PT J AU Gelis, AV Bowers, DL Hebden, AS Pereira, C Regalbuto, M Vandegrift, GF AF Gelis, Artem V. Bowers, Delbert L. Hebden, Andrew S. Pereira, Candido Regalbuto, Monica Vandegrift, George F. TI Actinide and lanthanide behavior in extraction with organophosphorus compounds SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Gelis, Artem V.; Bowers, Delbert L.; Hebden, Andrew S.; Pereira, Candido; Regalbuto, Monica; Vandegrift, George F.] Argonne Natl Lab, Div Chem Engn, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 171-IEC BP 823 EP 823 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604711 ER PT J AU Bond, EM FitzPatrick, JR Slemmons, AK Vieira, DJ Rundberg, RS Wilhelmy, JB Haight, RC AF Bond, Evelyn M. FitzPatrick, John R. Slemmons, Alice K. Vieira, David J. Rundberg, Robert S. Wilhelmy, Jerry B. Haight, Robert C. TI Rapid separations of (235m)U from (239)Pu for cross-section measurements SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bond, Evelyn M.; Vieira, David J.; Rundberg, Robert S.; Wilhelmy, Jerry B.] Los Alamos Natl Lab, C INC, Los Alamos, NM 87545 USA. [FitzPatrick, John R.; Slemmons, Alice K.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. [Haight, Robert C.] Los Alamos Natl Lab, LANSCE NS, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 176-IEC BP 824 EP 824 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604712 ER PT J AU Liu, P Pingali, V Dong, JJ Thiyagaranjan, P Lynn, D AF Liu, Peng Pingali, Venkatesh Dong, Jijun Thiyagaranjan, Pappannan Lynn, David TI Nucleobase modified peptide nanotubes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Liu, Peng; Dong, Jijun; Lynn, David] Emory Univ, Dept Chem, Ctr Anal Supramol Self Assemblies, Atlanta, GA 30322 USA. [Liu, Peng; Dong, Jijun; Lynn, David] Emory Univ, Dept Biol, Ctr Anal Supramol Self Assemblies, Atlanta, GA 30322 USA. [Pingali, Venkatesh; Thiyagaranjan, Pappannan] Argonne Natl Lab, Intensed Paulsed Neutron Source, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 45-BIOL BP 828 EP 828 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600731 ER PT J AU Greathouse, JA Allendorf, MD AF Greathouse, Jeffery A. Allendorf, Mark D. TI Molecular dynamics simulations of metal-organic framework-5 and its interactions with water SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Greathouse, Jeffery A.] Sandia Natl Labs, Geochem Dept, Albuquerque, NM 87185 USA. [Allendorf, Mark D.] Sandia Natl Labs, Microfluid Dept, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 104-IEC BP 835 EP 835 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604723 ER PT J AU Copping, R May, I Collison, D Jones, CJ Rao, LF AF Copping, Roy May, Iain Collison, David Jones, Chris J. Rao, Linfeng TI Actinyl coordination chemistry with oxygen and nitrogen donor ligands SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Copping, Roy; Rao, Linfeng] Univ Calif Berkeley, Lawrence Berkeley Lab, Actinide Chem Grp, Div Chem Sci, Berkeley, CA 94720 USA. [May, Iain] Univ Manchester, Ctr Radiochem Res, Sch Chem, Manchester M13 9PL, Lancs, England. [Collison, David] Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England. [Jones, Chris J.] British Nucl Fuels Plc, Nexia Solut, Seascale CA20 1PG, Cumbria, England. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 147-IEC BP 836 EP 836 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604724 ER PT J AU Taw, FL Goff, GS Peper, SM Brodnax, LF Field, SE Wakefield, C Runde, WH AF Taw, Felicia L. Goff, George S. Peper, Shane M. Brodnax, Lia F. Field, Stephanie E. Wakefield, Chris Runde, Wolfgang H. TI Separation of uranium from fission products in spent nuclear fuel SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Taw, Felicia L.; Goff, George S.; Peper, Shane M.; Brodnax, Lia F.; Field, Stephanie E.; Wakefield, Chris; Runde, Wolfgang H.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 160-IEC BP 837 EP 837 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604725 ER PT J AU Luo, HM Dai, S AF Luo, Huimin Dai, Sheng TI Solvent extractions of Sr2+and Cs+ based on protic ionic liquids SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Luo, Huimin] Oak Ridge Natl Lab, Nucl Sci Technol Div, Oak Ridge, TN 37831 USA. [Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 85-IEC BP 838 EP 838 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604726 ER PT J AU King, PE Wilson, RD Hatem, J Dogan, ON AF King, Paul E. Wilson, Rick D. Hatem, Jarrod Dogan, Omer N. TI A computational approach to the joining of dissimilar alloys for high temperature heat exchangers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [King, Paul E.; Wilson, Rick D.; Hatem, Jarrod; Dogan, Omer N.] Natl Energy Technol Lab, Albany, OR 97321 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 117-IEC BP 841 EP 841 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604729 ER PT J AU Wiacek, RJ O'Hara, MJ Egorov, OB Fryxell, GE Addleman, RS AF Wiacek, Robert J. O'Hara, Matthew J. Egorov, Oleg B. Fryxell, Glen E. Addleman, R. Shane TI Synthesis and evaluation of diphosphonic acid functionalized mesoporous silica for actinide sorption SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wiacek, Robert J.; O'Hara, Matthew J.; Egorov, Oleg B.; Fryxell, Glen E.; Addleman, R. Shane] Pacific NW Natl Lab, Austin, TX 78712 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 169-IEC BP 842 EP 842 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604730 ER PT J AU Levitskaia, TG Chen, YS Fulton, JL Sinkov, SI AF Levitskaia, Tatiana G. Chen, Yongsheng Fulton, John L. Sinkov, Serguei I. TI Chitosan biomaterials as sequestering agents for radionuclides SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Levitskaia, Tatiana G.] Pacific NW Natl Lab, Radiochem Proc Lab, Richland, WA 99352 USA. [Chen, Yongsheng; Fulton, John L.] Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA. [Sinkov, Serguei I.] Pacific NW Natl Lab, Radiochem Sci & Engn Grp, Richland, WA 99352 USA. RI Chen, Yongsheng/P-4800-2014 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 167-IEC BP 848 EP 848 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604736 ER PT J AU Bryan, SA Levitskaia, TG Sinkov, SI Schlahta, SN Shaver, JM AF Bryan, Samuel A. Levitskaia, Tatiana G. Sinkov, Sergei I. Schlahta, Stephan N. Shaver, Jeremy M. TI Raman based process monitor for continuous real-time analysis of high level radioactive waste components SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bryan, Samuel A.; Levitskaia, Tatiana G.; Schlahta, Stephan N.] Pacific NW Natl Lab, Radiochem Proc Lab, Richland, WA 99352 USA. [Sinkov, Sergei I.] Battelle Pacif NW Natl Lab, Radiochem Proc Grp, Richland, WA 99352 USA. [Shaver, Jeremy M.] Eigenvector Res Inc, Technol Dev, Manson, WA 98831 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 154-IEC BP 852 EP 852 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604740 ER PT J AU Sinkov, SI Choppin, GR Taylor, RJ AF Sinkov, Sergei I. Choppin, Gregory R. Taylor, Robin J. TI Complexation and redox chemistry of U(VI), Np(V) and Pu(VI) with acetohydroxamic acid SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Sinkov, Sergei I.] Pacific NW Natl Lab, Radiochem Proc Lab, Richland, WA 99352 USA. [Choppin, Gregory R.] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA. [Taylor, Robin J.] BTC, BNFL, Seascale CA20 1PG, Cumbria, England. NR 0 TC 1 Z9 1 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 173-IEC BP 853 EP 853 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604741 ER PT J AU Andrews, SS Moghaddam, AM Groves, JT AF Andrews, Steven S. Moghaddam, Adeleh Mazloom Groves, Jay T. TI Quantification of reaction rates in the E. coli Min system SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Andrews, Steven S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Moghaddam, Adeleh Mazloom; Groves, Jay T.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 259-BIOL BP 854 EP 854 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600757 ER PT J AU Kwon, Y Coleman, MA Camarero, JA AF Kwon, Youngeun Coleman, Mathew A. Camarero, Julio A. TI Traceless immobilization of proteins onto solid supports using protein trans-splicing SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Camarero, Julio A.] Lawrence Livermore Natl Lab, Chem Biol & Nucl Sci Div, Livermore, CA 94550 USA. RI Camarero, Julio/A-9628-2015 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 277-BIOL BP 870 EP 870 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600773 ER PT J AU Woo, YH Camarero, JA Stubbs, L AF Woo, Youn-Hi Camarero, Julio A. Stubbs, Lisa TI Protein labeling in live cells SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Woo, Youn-Hi; Camarero, Julio A.] Lawrence Livermore Natl Lab, Chem Biol & Nucl Sci Div, Livermore, CA 94550 USA. [Stubbs, Lisa] Lawrence Livermore Natl Lab, Bio Sci Directorate, Livermore, CA 94550 USA. RI Camarero, Julio/A-9628-2015 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 150-BIOL BP 871 EP 871 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600774 ER PT J AU Nogales, E Westermann, S Wang, HW Avila-Sakar, A Drubin, DG Barnes, G AF Nogales, Eva Westermann, Stefan Wang, Hong-Wei Avila-Sakar, Augustin Drubin, David G. Barnes, Georjana TI BIOL 85-Functional roles of structural intermediates in microtubule assembly and disassembly: Surfing and microtubule wave SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Nogales, Eva; Drubin, David G.; Barnes, Georjana] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. [Westermann, Stefan; Wang, Hong-Wei; Avila-Sakar, Augustin] Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 85-BIOL BP 888 EP 888 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600791 ER PT J AU Wham, RM Felker, LK Collins, ED AF Wham, R. M. Felker, L. K. Collins, E. D. TI Historical perspective on actinide/lanthanide separations at ORNL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wham, R. M.; Felker, L. K.; Collins, E. D.] Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 131-IEC BP 893 EP 893 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604781 ER PT J AU Sinkov, SI Lumetta, GJ Levitskaia, T AF Sinkov, Sergei I. Lumetta, Gregg J. Levitskaia, Tatiana TI Redox speciation and complex formation of Np and Pu in the process of their uptake by a Klaui ligand modified extraction chromatography resin: A spectroscopic study SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Sinkov, Sergei I.; Lumetta, Gregg J.; Levitskaia, Tatiana] Battelle Pacific NW Natl Lab, Radiochem Proc Grp, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 158-IEC BP 903 EP 903 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604791 ER PT J AU Levitskaia, T Lumetta, GJ Sinkov, S AF Levitskaia, Tatiana Lumetta, Gregg J. Sinkov, Serguei TI Actinide sorption by an extraction chromatography resin containing an alkyl-substituted Klaui ligand SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Levitskaia, Tatiana; Lumetta, Gregg J.; Sinkov, Serguei] Battelle Pacific NW Natl Lab, Radiochem Proc Grp, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 157-IEC BP 904 EP 904 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604792 ER PT J AU Stewart, D Buchholz, B Nambiar, KP Fitzgerald, P AF Stewart, Daniel Buchholz, Bruce Nambiar, Krishnan P. Fitzgerald, Paul TI BIOL 22 - Confirmation and dating of protein turnover in the lens of the human eye SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Stewart, Daniel; Nambiar, Krishnan P.] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. [Buchholz, Bruce] Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA. [Fitzgerald, Paul] Univ Calif Davis, Sch Med, Davis, CA 95616 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 22-BIOL BP 911 EP 911 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781600814 ER PT J AU Long, GS Garcia, E FitzPatrick, JR Martinez, MM Helland, CA Crooks, WJ AF Long, Gregory S. Garcia, Eduardo FitzPatrick, John R. Martinez, Michael M. Helland, Carolyn A. Crooks, William J., III TI Processing of fluoride-containing uranium solutions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Long, Gregory S.; Garcia, Eduardo; FitzPatrick, John R.; Martinez, Michael M.; Helland, Carolyn A.; Crooks, William J., III] Los Alamos Natl Lab, Los Alamos, NM 87544 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 177-IEC BP 912 EP 912 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604800 ER PT J AU Long, KM Jarvinen, GD FitzPatrick, JR Ford, DK Villarreal, R AF Long, Kristy M. Jarvinen, Gordon D. FitzPatrick, John R. Ford, Doris K. Villarreal, Robert TI Cesium removal as part of an alkaline separation process for spent nuclear fuel SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Long, Kristy M.; Jarvinen, Gordon D.; FitzPatrick, John R.; Ford, Doris K.; Villarreal, Robert] Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 162-IEC BP 913 EP 913 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604801 ER PT J AU Sessler, JL Cho, WS Gross, D Nielsen, KA Jeppesen, JO Guldi, DM Lee, CH Miyaji, H Marquez, M Schmidtchen, FP AF Sessler, Jonathan L. Cho, Won-Seob Gross, Dustin Nielsen, Kent A. Jeppesen, Jan O. Guldi, Dirk M. Lee, Chang-Hee Miyaji, Hidekazu Marquez, Manuel Schmidtchen, Franz P. TI Calixpyrroles: From simple anion receptors to molecular containers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Sessler, Jonathan L.; Cho, Won-Seob; Gross, Dustin] Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA. [Nielsen, Kent A.; Jeppesen, Jan O.] Odense Univ, Univ So Denmark, Dept Chem, DK-5230 Odense M, Denmark. [Guldi, Dirk M.] Univ Erlangen Nurnberg, Inst Phys & Theoret Chem, D-91058 Erlangen, Germany. [Lee, Chang-Hee; Miyaji, Hidekazu] Kangwon Natl Univ, Chunchon 200701, South Korea. [Marquez, Manuel] Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. [Schmidtchen, Franz P.] Munich Inst Technol, Dept Chem, D-85747 Garching, Germany. RI Lee, Chang-Hee/C-6339-2012 OI Lee, Chang-Hee/0000-0002-7906-6517 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 111-IEC BP 923 EP 923 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604811 ER PT J AU Chiarizia, R Briand, A Thiyagarajan, P AF Chiarizia, Renato Briand, Alexandra Thiyagarajan, Pappanan TI Third phase formation in the extraction of inorganic acids by TBP SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chiarizia, Renato] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. [Briand, Alexandra] Ecole Natl Super Chim Paris, F-75231 Paris 05, France. [Thiyagarajan, Pappanan] Argonne Natl Lab, IPNS Div, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 164-IEC BP 925 EP 925 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604813 ER PT J AU Nilekar, AU Nabar, R Xu, Y Adzic, RR Mavrikakis, M AF Nilekar, Anand U. Nabar, Rahul Xu, Ye Adzic, Radoslav R. Mavrikakis, Manos TI Near-surface alloys for improved catalysis SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Nilekar, Anand U.; Nabar, Rahul; Mavrikakis, Manos] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA. [Xu, Ye] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. [Adzic, Radoslav R.] Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA. RI Mavrikakis, Manos/D-5702-2012 OI Mavrikakis, Manos/0000-0002-5293-5356 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 126-IEC BP 933 EP 933 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604821 ER PT J AU Zhao, XY Kim, J Wang, P AF Zhao, Xueyan Kim, Jungbae Wang, Ping TI Nanobiocatalyst composites for biofuel cells SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Zhao, Xueyan; Wang, Ping] Univ Akron, Dept Chem & Biomol Engn, Akron, OH 44325 USA. [Kim, Jungbae] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 13-IEC BP 961 EP 961 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604849 ER PT J AU Klaehn, JR Peterman, DR Harrup, MK Luther, TA Law, JD Daniels, LM AF Klaehn, John R. Peterman, Dean R. Harrup, Mason K. Luther, Thomas A. Law, Jack D. Daniels, Lee M. TI Synthesis and characterization of regio/stereo specific dithiophosphinic acids SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Klaehn, John R.; Peterman, Dean R.; Harrup, Mason K.; Luther, Thomas A.; Law, Jack D.] Idaho Natl Lab, Dept Chem Sci, Idaho Falls, ID 83415 USA. [Daniels, Lee M.] Rigaku MSC Inc, The Woodlands, TX 77381 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 145-IEC BP 965 EP 965 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604853 ER PT J AU Peterman, DR Tillotson, RD Klaehn, JR Harrup, MK Luther, TA Daniels, LM AF Peterman, Dean R. Tillotson, Richard D. Klaehn, John R. Harrup, Mason K. Luther, Thomas A. Daniels, Lee M. TI Separation of minor actinides from lanthanides in acidic media using a novel dithiophosphinic acid extractant SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Klaehn, John R.; Harrup, Mason K.; Luther, Thomas A.] Idaho Natl Lab, Dept Chem Sci, Idaho Falls, ID 83415 USA. [Daniels, Lee M.] Rigaku MSC Inc, The Woodlands, TX 77381 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 144-IEC BP 970 EP 970 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604858 ER PT J AU Hickner, M Cornelius, C Hibbs, M Fujimoto, CH Alam, TM AF Hickner, Michael Cornelius, Christopher Hibbs, Michael Fujimoto, Cy H. Alam, Todd M. TI Water binding and transport in polymer membranes with high ion content SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hickner, Michael; Cornelius, Christopher; Hibbs, Michael; Fujimoto, Cy H.] Sandia Natl Labs, Chem & Biol Syst Dept, Albuquerque, NM 87185 USA. [Alam, Todd M.] Sandia Natl Labs, Elect & Nanostruct Mat Dept, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 24-IEC BP 971 EP 971 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604859 ER PT J AU Rutherford, SW AF Rutherford, Steven W. TI Water sorption in silicone foam SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Rutherford, Steven W.] Los Alamos Natl Lab, Engn Sci & Applicat Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 40-IEC BP 974 EP 974 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604862 ER PT J AU Tian, GX Rao, LF AF Tian, Guoxin Rao, Linfeng TI Spectrophotometric studies on the complexation of NpO(2)(+) and PuO(2)(2+) with dicarboxylic acids SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Tian, Guoxin; Rao, Linfeng] Univ Calif Berkeley, Lawrence Berkeley Lab, Glenn T Seaborg Ctr, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 174-IEC BP 975 EP 975 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604863 ER PT J AU Rao, LF Tian, GX AF Rao, Linfeng Tian, Guoxin TI Extraction of actinides from HLLW using N,N,N ',N '-tetraalky1-3-oxa-glutaramides: Thermodynamic and structural studies SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Rao, Linfeng] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Actinide Chem Grp, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 133-IEC BP 979 EP 979 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604867 ER PT J AU Hay, BP AF Hay, Benjamin P. TI De novo structure-based design of high symmetry coordination clusters SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hay, Benjamin P.] Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 98-IEC BP 980 EP 980 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604868 ER PT J AU Xu, Y Schneider, WF Getman, R AF Xu, Ye Schneider, William F. Getman, Rachel TI DFT simulations of lean NO(X) catalysis SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Xu, Ye] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. [Schneider, William F.; Getman, Rachel] Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 125-IEC BP 983 EP 983 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781604871 ER PT J AU Aieta, NV Yandrasits, MA Hamrock, SJ Stanis, RJ Cookson, DJ Herring, AM AF Aieta, Niccolo V. Yandrasits, Michael A. Hamrock, Steven J. Stanis, Ronald J. Cookson, David J. Herring, Andrew M. TI FUEL 148-In situ synchrotron SAXS studies of hydration processes in Nafion (R) and other perfluorosulfonate membranes for high temperature/low relative humidity PEM fuel cell applications SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Aieta, Niccolo V.; Stanis, Ronald J.; Herring, Andrew M.] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA. [Yandrasits, Michael A.] 3M Corp, 3M Fuel Cell Components Program, St Paul, MN 55144 USA. [Hamrock, Steven J.] 3M Co, 3M Ctr, Fuel Cell Components Program, St Paul, MN 55144 USA. [Cookson, David J.] Argonne Natl Lab, ChemMat CARS APS, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 148-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605231 ER PT J AU Aieta, NV Yandrasits, MA Hamrock, SJ Stanis, RJ Cookson, DJ Herring, AM AF Aieta, Niccolo V. Yandrasits, Michael A. Hamrock, Steven J. Stanis, Ronald J. Cookson, David J. Herring, Andrew M. TI FUEL 48-Real-time study of Nafion hydration processes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Aieta, Niccolo V.; Stanis, Ronald J.; Herring, Andrew M.] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA. [Yandrasits, Michael A.] 3M Corp, 3M Fuel Cell Components Program, St Paul, MN 55144 USA. [Hamrock, Steven J.] 3M Co, 3M Ctr, Fuel Cell Components Program, St Paul, MN 55144 USA. [Cookson, David J.] Argonne Natl Lab, ChemMat CARS APS, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 48-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605063 ER PT J AU Alam, TM McIntyre, SK AF Alam, Todd M. McIntyre, Sarah K. TI POLY 147-Thermal induced changes in dynamic heterogeneity for ultra-thin PDMS films SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Alam, Todd M.; McIntyre, Sarah K.] Sandia Natl Labs, Elect & Nanostruct Mat Dept, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 147-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781701576 ER PT J AU Alicea, JC Cook, AR Dorst, K Miller, JR Zaikowski, L AF Alicea, Juan C. Cook, Andrew R. Dorst, Kate Miller, John R. Zaikowski, Lori TI PHYS 517-Energetics of charge separation in medium polarity solvents SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Alicea, Juan C.; Dorst, Kate; Zaikowski, Lori] Dowling Coll, Dept Chem, Oakdale, NY 11769 USA. [Cook, Andrew R.; Miller, John R.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 517-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609431 ER PT J AU Alivisatos, AP AF Alivisatos, A. Paul TI COLL 55-Chemical transformations in nanocrystals SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Alivisatos, A. Paul] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Alivisatos, A. Paul] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 55-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603546 ER PT J AU Amar, JG Shim, Y Uberuaga, BP Voter, AF AF Amar, Jacques G. Shim, Yunsic Uberuaga, Blas Pedro Voter, Arthur F. TI PHYS 95-Simulating extended time and length scales using parallel kinetic Monte Carlo and parallel accelerated dynamics SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Amar, Jacques G.; Shim, Yunsic] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA. [Uberuaga, Blas Pedro] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. [Voter, Arthur F.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 95-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609203 ER PT J AU Anjom, M Ro, K Hunt, PG Mahajan, D AF Anjom, Mouzhgun Ro, Kyoung Hunt, P. G. Mahajan, Devinder TI PETR 139-Themrochemical processing of biomass for farm-based economical production of methanol SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Anjom, Mouzhgun] SUNY Stony Brook, Mat Sci & Engn Dept, Stony Brook, NY 11794 USA. [Ro, Kyoung] ARS Coastal Plains, USDA, Florence, SC 29501 USA. [Hunt, P. G.] ARS, USDA, Florence, SC 29501 USA. [Mahajan, Devinder] Brookhaven Natl Lab, Energy Sci & Technol Dept, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 139-PETR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605646 ER PT J AU Apblett, C Brozik, SM Harper, JC AF Apblett, Christopher Brozik, Susan M. Harper, Jason C. TI COLL 621-In situ electrochemical analysis of proteins within non-denaturing electrophoretic gels SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Apblett, Christopher; Brozik, Susan M.; Harper, Jason C.] Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 621-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603465 ER PT J AU Arakali, A Kaiser, BJ Jain, JC Zeigler, K Coleman, C Click, D Herman, C Alexander, M Urie, M Farmer, T Seide, C Marcus, M Wells, K Edwards, R Robertson, D Pacheco, L Ryan, M Yokel, J AF Arakali, Aruna Kaiser, Bruce J. Jain, Jinesh C. Zeigler, Kristine Coleman, Charles Click, Damon Herman, Connie Alexander, Michael Urie, Michael Farmer, Thomas Seide, Cary Marcus, Mark Wells, Kenneth Edwards, Richard Robertson, Dan Pacheco, Lina Ryan, Mary Yokel, Jerry TI NUCL 44-Roadmap for development and acceptance of laser ablation/ICP methods for monitoring vitrification process at Hanford SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Arakali, Aruna; Kaiser, Bruce J.; Jain, Jinesh C.; Wells, Kenneth; Robertson, Dan] Bechtel Natl Corp, Washington Grp Int, River Protect Project Waste Treatment Plant, Richland, WA 99354 USA. [Zeigler, Kristine; Coleman, Charles; Click, Damon; Herman, Connie; Edwards, Richard] Washington Savannah River Co, Savannah River Natl Lab, Aiken, SC USA. [Alexander, Michael; Urie, Michael; Farmer, Thomas] Battelle Pacific NW Div, Richland, WA 99354 USA. [Seide, Cary; Marcus, Mark] CH2M Hill Hanford Grp Inc, Richland, WA 99354 USA. [Pacheco, Lina; Ryan, Mary] US DOE, Off River Protect, Richland, WA 99354 USA. [Yokel, Jerry] Washington State Dept Ecol, Richland, WA 99354 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 44-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605446 ER PT J AU Artyukhin, AB Stadermann, M Bakajin, O Stroeve, P Noy, A AF Artyukhin, Alexander B. Stadermann, Michael Bakajin, Olgica Stroeve, Pieter Noy, Aleksandr TI ANYL 297-Electrostatic gating of carbon nanotube FETs in liquid SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Artyukhin, Alexander B.; Stadermann, Michael; Bakajin, Olgica; Noy, Aleksandr] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Stroeve, Pieter] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. RI Stadermann, Michael /A-5936-2012 OI Stadermann, Michael /0000-0001-8920-3581 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 297-ANYL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781601144 ER PT J AU Arzhantsev, S Jin, H Baker, GA Maroncelli, M AF Arzhantsev, Sergei Jin, Hui Baker, Gary A. Maroncelli, Mark TI PHYS 196-Solvation dynamics in room-temperature ionic liquids: Nonexponentiality and heterogeneity SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Arzhantsev, Sergei; Jin, Hui; Maroncelli, Mark] Penn State Univ, Dept Chem, University Pk, PA 16802 USA. [Baker, Gary A.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 196-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609417 ER PT J AU Ashby, PD AF Ashby, Paul D. TI COLL 435-Interfacial water structure and dynamics probed with chemical force microscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Ashby, Paul D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 435-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603657 ER PT J AU Asplund, MC Sevy, ET Black, GD AF Asplund, Matthew C. Sevy, Eric T. Black, Gary D. TI CHED 475-Using the ECCE computational program in undergraduate education SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Asplund, Matthew C.; Sevy, Eric T.] Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA. [Black, Gary D.] Pacific NW Natl Lab, Computat Sci & Math Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 475-CHED PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781602699 ER PT J AU Averkiev, B Boldyrev, AI Li, X Wang, LS AF Averkiev, Boris Boldyrev, Alexander I. Li, Xi Wang, Lai-Sheng TI PHYS 444-Photoelectron spectroscopic and ab initio theoretical study of planar nitrogen doped aluminum clusters Al3N-, Al4N-, and Al5N- SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Averkiev, Boris; Boldyrev, Alexander I.] Utah State Univ, Dept Chem & Biochem, Logan, UT 84322 USA. [Li, Xi; Wang, Lai-Sheng] Washington State Univ, Richland, WA 99352 USA. [Li, Xi; Wang, Lai-Sheng] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Boldyrev, Alexander/C-5940-2009 OI Boldyrev, Alexander/0000-0002-8277-3669 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 444-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609164 ER PT J AU Bahng, MK Macdonald, RG AF Bahng, Mi-Kyung Macdonald, R. Glen TI PHYS 413-Time-resolved near infrared absorption spectroscopic study of the OH plus OH reaction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bahng, Mi-Kyung; Macdonald, R. Glen] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 413-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609247 ER PT J AU Barker, JR Weston, RE AF Barker, John R. Weston, Ralph E. TI PHYS 259-On modeling the pressure-dependent photoisomerization of trans-stilbene SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Barker, John R.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Dept Chem, Ann Arbor, MI 48109 USA. [Weston, Ralph E.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RI Barker, John/F-5904-2012 OI Barker, John/0000-0001-9248-2470 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 259-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609320 ER PT J AU Barnes, JH Tandon, L Porterfield, DR Brooks, GH AF Barnes, James H. Tandon, Lay Porterfield, Donivan R. Brooks, George H., Jr. TI NUCL 33-Field portable instruments for isotopic analysis of nuclear materials SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Tandon, Lay] LANL, C AAC, Los Alamos, NM 87545 USA. [Porterfield, Donivan R.] Los Alamos Natl Lab, Actinide Analyt Chem Grp, Los Alamos, NM 87545 USA. [Brooks, George H., Jr.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 33-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605520 ER PT J AU Barnese, K Cabelli, DE Valentine, JS AF Barnese, Kevin Cabelli, Diane E. Valentine, Joan S. TI INOR 463-How does aqueous manganous ion functionally substitute for superoxide dismutase enzymes in vivo? SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Barnese, Kevin; Valentine, Joan S.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA. [Cabelli, Diane E.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 463-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781606002 ER PT J AU Batista, ER Hay, PJ AF Batista, Enrique R. Hay, P. Jeffrey TI INOR 101-Theoretical study of the chemical bonding in the first linear U-imido analogs of the uranyl ion SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Batista, Enrique R.; Hay, P. Jeffrey] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 101-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781606487 ER PT J AU Belau, L Wilson, KR Leone, SR Ahmed, M AF Belau, Leonid Wilson, Kevin R. Leone, Stephen R. Ahmed, Musahid TI PHYS 420-VUV photoionization dynamics of water clusters SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Leone, Stephen R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Dept Phys, Berkeley, CA 94720 USA. [Leone, Stephen R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem, Berkeley, CA 94720 USA. [Ahmed, Musahid] Ernest Orlando Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 420-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609444 ER PT J AU Benzerara, K Menguy, N Lepot, K Brown, GE AF Benzerara, Karim Menguy, Nicolas Lepot, Kevin Brown, Gordon E., Jr. TI GEOC 127-Study of bioweathering and nano-biominerals at the nanoscale in natural samples SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Benzerara, Karim] Univ Paris 6 7, Inst Mineral & Phys Milieux Condenses, F-75015 Paris, France. [Menguy, Nicolas] Univ Paris 07, Lab Mineral Cristallog, F-75005 Paris, France. [Menguy, Nicolas; Lepot, Kevin] Inst Phys Globe, F-75005 Paris, France. [Brown, Gordon E., Jr.] Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA. [Brown, Gordon E., Jr.] Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. RI MENGUY, Nicolas/F-5607-2012; Lepot, Kevin/C-7072-2014 OI MENGUY, Nicolas/0000-0003-4613-2490; Lepot, Kevin/0000-0003-0556-0405 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 127-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605278 ER PT J AU Bernstein, R Derzon, DK AF Bernstein, Robert Derzon, Dora K. TI POLY 102-Nylon humidity aging with and without Kevlar SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bernstein, Robert; Derzon, Dora K.] Sandia Natl Labs, Organ Mat Dept, Albuquerque, NM 87185 USA. RI Bernstein, Robert/F-8396-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 102-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781701597 ER PT J AU Berry, DA Salazar, M Gardner, TH Shekthawat, D AF Berry, David A. Salazar, Maria Gardner, Todd H. Shekthawat, Dushyant TI PETR 111-Role of lattice oxygen in the partial oxidation of methane over Rh & Pt/zirconiuim-doped ceria: Mechanistic aspects SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Berry, David A.; Salazar, Maria; Gardner, Todd H.; Shekthawat, Dushyant] US DOE, Separat & Fuels Proc Div, Natl Energy Technol Lab, Morgantown, WV 26505 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 111-PETR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605692 ER PT J AU Berryman, OB Stay, DP Johnson, DW Bryantsev, V Hay, BP AF Berryman, Orion B. Stay, David P. Johnson, Darren W. Bryantsev, Vyacheslav Hay, Benjamin P. TI ORGN 379-Structural criteria for the design of anion receptors: Incorporating the anion-pi interaction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Berryman, Orion B.; Stay, David P.; Johnson, Darren W.] Univ Oregon, Dept Chem, Eugene, OR 97403 USA. [Bryantsev, Vyacheslav; Hay, Benjamin P.] Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. RI Bryantsev, Vyacheslav/M-5111-2016 OI Bryantsev, Vyacheslav/0000-0002-6501-6594 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 379-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781608301 ER PT J AU Beste, A Harrison, RJ Overbury, SH Mullins, DR AF Beste, Ariana Harrison, Robert J. Overbury, Steven H. Mullins, David R. TI PHYS 120-Adsorption of methanol on cerium oxide surfaces from first principles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Beste, Ariana] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. [Harrison, Robert J.] U Tennessee, Knoxville, TN 37831 USA. [Overbury, Steven H.; Mullins, David R.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. [Harrison, Robert J.] ORNL, Knoxville, TN 37831 USA. RI Overbury, Steven/C-5108-2016 OI Overbury, Steven/0000-0002-5137-3961 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 120-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609124 ER PT J AU Bickmore, BR Rosso, KM Brown, ID Bylaska, EJ AF Bickmore, Barry R. Rosso, Kevin M. Brown, I. David Bylaska, Eric J. TI GEOC 4-Water structure and the valence sum rule SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bickmore, Barry R.] Brigham Young Univ, Dept Geol Sci, Provo, UT 84602 USA. [Bylaska, Eric J.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. [Brown, I. David] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 4-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605309 ER PT J AU Birnbaum, ER Harris, MN Minogue, EM Stewart, JJ Warner, BP AF Birnbaum, Eva R. Harris, Michael N. Minogue, Edel M. Stewart, Jeffrey J. Warner, Benjamin P. TI INOR 242-MXRF for fast, label-free measurement of host-guest interactions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Birnbaum, Eva R.; Harris, Michael N.; Stewart, Jeffrey J.; Warner, Benjamin P.] Caldera Pharmaceut, Los Alamos, NM 87544 USA. [Minogue, Edel M.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 242-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781606485 ER PT J AU Black, J Nyman, M Casey, WH AF Black, Jay Nyman, May Casey, William H. TI GEOC 103-Oxygen-exchange reactions in nanometer-size hexaniobate clusters SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Black, Jay; Casey, William H.] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. [Black, Jay; Casey, William H.] Univ Calif Davis, Dept Geol, Davis, CA 95616 USA. [Nyman, May] Sandia Natl Labs, Geochem Dept, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 103-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605279 ER PT J AU Bode, BM AF Bode, Brett M. TI PHYS 234-UltraScale GAMESS: Lessons learned porting GAMESS to BlueGene/L SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bode, Brett M.] Iowa State Univ, Scalable Comp Lab, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 234-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609226 ER PT J AU Bogan, MJ AF Bogan, Michael J. TI PHYS 21-Solving the enigma of gas phase biomolecular structure: Towards X-ray free electron laser diffraction imaging of single biomolecules SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bogan, Michael J.] Lawrence Livermore Natl Lab, Phys & Adv Technol Directorate, Livermore, CA 94550 USA. RI Bogan, Mike/I-6962-2012 OI Bogan, Mike/0000-0001-9318-3333 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 21-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609074 ER PT J AU Bond, DL Davis, JA Zachara, JM AF Bond, Deborah L. Davis, James A. Zachara, John M. TI GEOC 20-U(VI) desorption and dissolution in a Hanford aquifer SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bond, Deborah L.; Davis, James A.] US Geol Survey, Div Water Resources, Menlo Pk, CA 94025 USA. [Zachara, John M.] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 20-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605368 ER PT J AU Bondarchuk, A Kim, J White, JM Kay, B Dohnalek, Z AF Bondarchuk, A. Kim, Jooho White, J. M. Kay, Bruce Dohnalek, Zdenek TI PHYS 620-Structure and catalytic activity of WO3 clusters on TiO2(110) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bondarchuk, A.] Univ Texas Austin, Dept Chem & Biochem, Ctr Mat Chem, Austin, TX 78712 USA. [Kim, Jooho; Kay, Bruce; Dohnalek, Zdenek] Pacific NW Natl Lab, Fundamental Sci Directorate, Richland, WA 99352 USA. [Kim, Jooho; Kay, Bruce; Dohnalek, Zdenek] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA. [White, J. M.] Univ Texas Austin, Dept Chem, Austin, TX 78712 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 620-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609089 ER PT J AU Bontchev, RP Nyman, MD AF Bontchev, Ranko P. Nyman, May D. TI INOR 912-Evolution of the largest polyoxoniobate cluster [Nb24O72 H9]15-structure SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bontchev, Ranko P.; Nyman, May D.] Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 912-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781606035 ER PT J AU Bontchev, RP Nyman, MD AF Bontchev, Ranko P. Nyman, May D. TI INOR 913-New series of copper-linked polyoxoniobates SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bontchev, Ranko P.; Nyman, May D.] Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 913-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781606034 ER PT J AU Bose, S Hochella, MF Lower, BH Gorby, YA Kennedy, DW McCready, DE AF Bose, Saumyaditya Hochella, Michael F., Jr. Lower, Brian H. Gorby, Yuri A. Kennedy, David W. McCready, Dave E. TI GEOC 119-Bioreduction kinetics of hematite nanoparticles by Shewanella oneidensis MR-1: Effect of size and mineralogy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bose, Saumyaditya; Hochella, Michael F., Jr.] Virginia Tech, NanoGeosci & Technol Lab, Dept Geosci, Blacksburg, VA 24061 USA. [Lower, Brian H.; Gorby, Yuri A.; Kennedy, David W.; McCready, Dave E.] Pacific NW Natl Lab, EMSL, Richland, WA 99356 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 119-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605293 ER PT J AU Bourg, IC Sposito, G Bourg, ACM AF Bourg, Ian C. Sposito, Garrison Bourg, Alain C. M. TI GEOC 48-Acid-base titration and point of zero net proton charge (pznpc) of montmorillonite SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bourg, Ian C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Dept Geochem,Sposito Lab, Berkeley, CA 94720 USA. [Sposito, Garrison] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA. [Bourg, Alain C. M.] Univ Pau, Environm HydroGeochem LHGE JE2397, F-64013 Pau, France. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 48-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605393 ER PT J AU Bowers, DL Sullivan, VS AF Bowers, Delbert L. Sullivan, Vivian S. TI NUCL 31-Preparation of high level 241Am sources by vapor deposition SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bowers, Delbert L.; Sullivan, Vivian S.] Argonne Natl Lab, Div Chem Engn, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 31-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605484 ER PT J AU Boxer, SG Kraft, ML Longo, M Hutcheon, ID Weber, PK AF Boxer, Steven G. Kraft, Mary L. Longo, Marjorie Hutcheon, Ian D. Weber, Peter K. TI PHYS 62-Membrane composition analysis by imaging mass spectrometry SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Boxer, Steven G.; Kraft, Mary L.] Stanford Univ, Dept Chem, Stanford, CA 94305 USA. [Longo, Marjorie] Univ Calif Davis, Davis, CA 95616 USA. [Hutcheon, Ian D.; Weber, Peter K.] Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 62-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609094 ER PT J AU Bratko, D Cellmer, T Prausnitz, JM Blanch, HW AF Bratko, Dusan Cellmer, Troy Prausnitz, John M. Blanch, Harvey W. TI BIOT 196-Effect of single point mutations on the aggregation propensity of a model protein SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bratko, Dusan] Virginia Commonwealth Univ, Dept Chem, Richmond, VA 23284 USA. [Bratko, Dusan] Univ Calif, Dept Chem Engn, Richmond, VA 23284 USA. [Cellmer, Troy] NIH, Chem Phys Lab, Bethesda, MD 20892 USA. [Prausnitz, John M.; Blanch, Harvey W.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Prausnitz, John M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 196-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781601739 ER PT J AU Bratlie, KM Kliewer, CJ Flores, LD Somorjai, GA AF Bratlie, Kaitlin M. Kliewer, Christopher J. Flores, Lucio D. Somorjai, Gabor A. TI COLL 88-Benzene hydrogenation on platinum investigated with sum frequency generation vibrational spectroscopy and kinetics: Structure, pressure, and temperature effects SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bratlie, Kaitlin M.; Kliewer, Christopher J.; Flores, Lucio D.; Somorjai, Gabor A.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Kliewer, Christopher J.; Flores, Lucio D.; Somorjai, Gabor A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 88-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603477 ER PT J AU Breger, J Kang, K Chupas, PJ Ceder, G Grey, CP AF Breger, Julien Kang, Kisuk Chupas, Peter J. Ceder, Gerbrand Grey, Clare P. TI INOR 993-Structural study of the Lix(NiMn)0.5O2 positive electrode material for Li-ion rechargeable batteries SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Breger, Julien; Grey, Clare P.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11790 USA. [Kang, Kisuk; Ceder, Gerbrand] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA. [Chupas, Peter J.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 993-INOR PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781606664 ER PT J AU Brigmon, RL Seaman, JC Berry, C AF Brigmon, Robin L. Seaman, John C. Berry, Christopher TI NUCL 91-Microbial mobilization of uranium in contaminated soils SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Brigmon, Robin L.; Berry, Christopher] Washington Savannah River Co, Aiken, SC 29808 USA. [Seaman, John C.] Savannah River Ecol Lab, Adv Analyt Ctr Environm Sci, Aiken, SC 29802 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 91-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605491 ER PT J AU Brinker, CJ Singh, S Houston, J Van Swol, FB AF Brinker, C. Jeffrey Singh, Seema Houston, Jack Van Swol, Frank B. TI COLL 203-Bridging the Gap: Observation of ultra long-range hydrophobic interactions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Brinker, C. Jeffrey; Singh, Seema; Houston, Jack; Van Swol, Frank B.] Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 203-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603620 ER PT J AU Britt, PF AF Britt, Phillip F. TI SOCED 2-Nanoscience research at the Center for Nanophase Materials Sciences SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Britt, Phillip F.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 2-SOCED PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609664 ER PT J AU Brown, GE Benzerara, K Yoon, TH Ha, J Cordova, CD Spormann, AM Morin, G Calas, G Tyliszczak, T AF Brown, Gordon E., Jr. Benzerara, Karim Yoon, Tae Hyun Ha, Juyoung Cordova, Carmen D. Spormann, Alfred M. Morin, Guillaume Calas, Georges Tyliszczak, Tolek TI COLL 418-Soft X-ray spectromicroscopy studies of environmental interfaces SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Brown, Gordon E., Jr.; Ha, Juyoung] Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA. [Brown, Gordon E., Jr.; Ha, Juyoung] Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. [Benzerara, Karim; Morin, Guillaume; Calas, Georges] Univ Paris 6 7, Inst Mineral & Phys Milieux Condenses, F-75015 Paris, France. [Yoon, Tae Hyun] Hanyang Univ, Dept Chem, Seoul 133791, South Korea. [Cordova, Carmen D.; Spormann, Alfred M.] Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA. [Tyliszczak, Tolek] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Calas, Georges/B-2445-2012; Benzerara, Karim/J-1532-2016 OI Calas, Georges/0000-0003-0525-5734; Benzerara, Karim/0000-0002-0553-0137 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 418-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603709 ER PT J AU Brown, MA Krisch, MJ Bluhm, H Starr, DE Hemminger, JC AF Brown, Matthew A. Krisch, Maria J. Bluhm, Hendrik Starr, David E. Hemminger, John C. TI COLL 68-Ion concentrations at the alkali halide aqueous-vapor interface investigated through ambient pressure X-ray photoelectron spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Brown, Matthew A.; Krisch, Maria J.; Hemminger, John C.] Univ Calif Irvine, Dept Chem, Irvine, CA 92717 USA. [Brown, Matthew A.; Krisch, Maria J.; Hemminger, John C.] Univ Calif Irvine, AirUCI, Irvine, CA 92717 USA. [Bluhm, Hendrik; Starr, David E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 68-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603669 ER PT J AU Buchholz, BA Spalding, KL Bergman, LE Druid, H Frisen, J AF Buchholz, Bruce A. Spalding, Kirsty L. Bergman, Lars-Eric Druid, Henrik Frisen, Jonas TI ANYL 165-Forensic dating of dental enamel with bomb-pulse radiocarbon SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Buchholz, Bruce A.] LLNL, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA. [Spalding, Kirsty L.; Frisen, Jonas] Karolinska Inst, Med Nobel Inst, Dept Cell & Mol Biol, Stockholm, Sweden. [Bergman, Lars-Eric; Druid, Henrik] Karolinska Inst, Dept Forens Med, Stockholm, Sweden. NR 0 TC 0 Z9 0 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 165-ANYL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781601330 ER PT J AU Burch, KC Houghton, TP Rollins, HW Ginosar, DM AF Burch, Kyle C. Houghton, Tracy P. Rollins, Harry W. Ginosar, Daniel M. TI TECH 14-Catalyst testing for sulfur-iodine thermochemical water splitting cycles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Burch, Kyle C.; Houghton, Tracy P.; Rollins, Harry W.; Ginosar, Daniel M.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. RI Rollins, Harry/B-6327-2017; Ginosar, Daniel/C-2357-2017 OI Rollins, Harry/0000-0002-3926-7445; Ginosar, Daniel/0000-0002-8522-1659 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 14-TECH PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609794 ER PT J AU Butcher, DR Montano, MO Salmeron, M Somorjai, GA AF Butcher, Derek R. Montano, Max O. Salmeron, Miquel Somorjai, G. A. TI COLL 232-Carbon monoxide poisoned hydrogen and deuterium exchange on Pt (111) studied by high pressure XPS and high pressure STM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Butcher, Derek R.; Montano, Max O.; Somorjai, G. A.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Salmeron, Miquel] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 232-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603639 ER PT J AU Cahoon, JF Kling, MF Sawyer, KR Frei, H Harris, CB AF Cahoon, James F. Kling, Matthias F. Sawyer, Karma R. Frei, Heinz Harris, Charles B. TI INOR 1065-Dynamics of 19-electron intermediates CpW(CO)3PR3 on the femto- through microsecond time scales: Disproportionation, electron transfer, and ligand substitution SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cahoon, James F.; Sawyer, Karma R.; Harris, Charles B.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Kling, Matthias F.] FOM Inst Atom & Mol Phys AMOLF, NL-1098 SJ Amsterdam, Netherlands. [Frei, Heinz] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RI Kling, Matthias/D-3742-2014 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 1065-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781606159 ER PT J AU Calvert, MG Hu, YJ Nitsche, H AF Calvert, Michael G. Hu, Yung-Jin Nitsche, Heino TI NUCL 78-Complexation of Cm(III) with phosphonoacetic acid SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Calvert, Michael G.; Hu, Yung-Jin; Nitsche, Heino] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 78-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605467 ER PT J AU Camaioni, DM Autrey, T AF Camaioni, Donald M. Autrey, Tom TI FUEL 128-Thermochemistry of boron-nitrogen hydrogen storage compounds SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Camaioni, Donald M.; Autrey, Tom] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 128-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605044 ER PT J AU Camarero, JA Kimura, RH Steenblock, E Tran, AT AF Camarero, Julio A. Kimura, Richard H. Steenblock, Erin Tran, Ahn T. TI BIOT 83-A cell-based approach for biosynthesis/screening of cyclic peptide libraries against bacterial toxins SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Camarero, Julio A.; Kimura, Richard H.; Steenblock, Erin; Tran, Ahn T.] Lawrence Livermore Natl Lab, Chem Biol & Nucl Sci Div, Livermore, CA 94550 USA. RI Camarero, Julio/A-9628-2015 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 83-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781601388 ER PT J AU Camarero, JA Kwon, Y Coleman, MA AF Camarero, Julio A. Kwon, Youngeun Coleman, Matthew A. TI BIOT 387-Selective and traceless immobilization of proteins onto solid supports through protein trans-splicing: Application to the rapid production of protein chips SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Camarero, Julio A.; Kwon, Youngeun] Lawrence Livermore Natl Lab, Chem Biol & Nucl Sci Div, Livermore, CA 94550 USA. [Coleman, Matthew A.] Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94550 USA. RI Camarero, Julio/A-9628-2015 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 387-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781601387 ER PT J AU Carlson, CN Palmer, PD Clark, DL Conradson, SD John, KD Schwarz, DE Wilkerson, MP AF Carlson, Christn N. Palmer, Phillip D. Clark, David L. Conradson, Steven D. John, Kevin D. Schwarz, Daniel E. Wilkerson, Marianne P. TI INOR 103-Towards the quantification of covalency in uranium using X-ray absorption spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Carlson, Christn N.; Palmer, Phillip D.; John, Kevin D.; Schwarz, Daniel E.; Wilkerson, Marianne P.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. [Clark, David L.] Los Alamos Natl Lab, Nucl Mat & Technol Div, Los Alamos, NM 87545 USA. [Conradson, Steven D.] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 103-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781606490 ER PT J AU Carter, JC Ange, SM Kordas, J Whipple, RE Nielson, D Howland, F Henderer, B Hill, J Hunt, W AF Carter, J. Chance Ange, S. M. Kordas, Joe Whipple, R. E. Nielson, Darren Howland, Fred Henderer, Bruce Hill, Jim Hunt, Will TI NUCL 66-Forensic applications of standoff Raman spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Whipple, R. E.] Lawrence Livermore Natl Lab, Forens Sci Ctr, Livermore, CA 94550 USA. [Ange, S. M.] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 66-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605459 ER PT J AU Caster, AG Lim, SH Nicolet, O Leone, SR AF Caster, Allison G. Lim, Sang-Hyun Nicolet, Olivier Leone, Stephen R. TI PHYS 510-Chemically selective imaging with single pulse CARS microscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Leone, Stephen R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem, Div Chem Sci, Berkeley, CA 94720 USA. [Leone, Stephen R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Phys, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 510-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609342 ER PT J AU Cervini-Silva, J Gilbert, B Fakra, SC Dietrich, S Banfield, J AF Cervini-Silva, Javiera Gilbert, Benjamin Fakra, Sirine C. Dietrich, Stephan Banfield, Jillian TI GEOC 90-Molecular approach towards understanding the biogenic formation of CeO2 and its interactions with biomolecules SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cervini-Silva, Javiera] Univ Nacl Autonoma Mexico, Mexico City 01450, DF, Mexico. [Gilbert, Benjamin] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. [Fakra, Sirine C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. [Banfield, Jillian] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 90-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605353 ER PT J AU Chabinyc, ML Toney, MF AF Chabinyc, Michael L. Toney, Michael F. TI POLY 630-X-ray scattering sudies of ordering in thin films of polythiophenes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chabinyc, Michael L.] Palo Alto Res Ctr, Elect Mat Lab, Palo Alto, CA 94304 USA. [Toney, Michael F.] Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. RI Chabinyc, Michael/E-2387-2011 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 630-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781701065 ER PT J AU Chatellier, X Abdelmoula, M Kemner, K Leppard, GG Mustin, C Ravel, B West, M AF Chatellier, Xavier Abdelmoula, Mustapha Kemner, Ken Leppard, Gary G. Mustin, Christian Ravel, Bruce West, Marcia TI GEOC 28-Absorption of phosphate during the oxidation of ferrous ions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chatellier, Xavier] Univ Rennes 1, CNRS, F-35042 Rennes, France. [Abdelmoula, Mustapha] Univ Nancy 1, CNRS, UMR 7564, Lab Chim Phys & Microbiol Environnement, F-54600 Nancy, France. [Kemner, Ken; Ravel, Bruce] Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA. [Leppard, Gary G.] Natl Water Res Inst Branch, Burlington, ON L7R 4A6, Canada. [Mustin, Christian] LIMOS, Nancy, France. [West, Marcia] McMaster Univ, Fac Hlth Sci, Hamilton, ON L8N 3Z5, Canada. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 28-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605357 ER PT J AU Chen, HT Trewyn, BG Kumar, R Wiench, JW Pruski, M Lin, VSY AF Chen, Hung-Ting Trewyn, Brian G. Kumar, Rajeev Wiench, Jerzy W. Pruski, Marek Lin, Victor S-Y. TI INOR 1055-Multifunctional mesoporous silica nanoparticles as recyclable heteronegeous catalysts SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chen, Hung-Ting; Trewyn, Brian G.; Lin, Victor S-Y.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA. [Chen, Hung-Ting; Trewyn, Brian G.; Kumar, Rajeev; Wiench, Jerzy W.; Pruski, Marek; Lin, Victor S-Y.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 1055-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781607759 ER PT J AU Chin, YH King, DL Wang, Y Roh, HS AF Chin, Ya-Huei King, David L. Wang, Yong Roh, Hyun-Seog TI FUEL 70-Structure and reactivity of bimetallic Ni-Au catalysts for syngas production and utilization SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chin, Ya-Huei] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [King, David L.; Wang, Yong] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99354 USA. [Roh, Hyun-Seog] Korea Inst Energy Res, Taejon 305343, South Korea. RI Wang, Yong/C-2344-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 70-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605102 ER PT J AU Chinn, SC Maxwell, RS Gjersing, EL Eastwood, E Bowen, D Stephens, T AF Chinn, Sarah C. Maxwell, Robert S. Gjersing, Erica L. Eastwood, Eric Bowen, Dan Stephens, Tom TI POLY 697-Probing structure property relationships in complex engineering silicones by 1H NMR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chinn, Sarah C.; Maxwell, Robert S.; Gjersing, Erica L.] Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. [Eastwood, Eric; Bowen, Dan] Honeywell FM&T Kansas City Plant, Kansas City, MO 64141 USA. [Stephens, Tom] LANL, ESA WMM, Los Alamos, NM USA. RI Chinn, Sarah/E-1195-2011 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 697-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DC UT WOS:000207781701532 ER PT J AU Chlistunoff, J Uribe, F Pivovar, BS AF Chlistunoff, Jerzy Uribe, Francisco Pivovar, Bryan S. TI FUEL 223-Ultramicroelectrode study of oxygen reduction at the platinum/ionomer interface at low relative humidity SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chlistunoff, Jerzy; Uribe, Francisco] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Pivovar, Bryan S.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 223-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605220 ER PT J AU Chung, SH Greenbaum, SG Shirota, H Castner, EW Wishart, JF AF Chung, Song H. Greenbaum, Steven G. Shirota, Hideaki Castner, Edward W., Jr. Wishart, James F. TI PHYS 101-1H and 19F nuclear magnetic resonance study of ionic liquids with-CH2Si(CH3)3 vs.-CH2C(CH3)3 substitutions on the imidazolium cations SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chung, Song H.] William Paterson Univ New Jersey, Dept Chem & Phys, Wayne, NJ 07470 USA. [Greenbaum, Steven G.] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10021 USA. [Shirota, Hideaki; Castner, Edward W., Jr.] Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ 08854 USA. [Wishart, James F.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 101-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609596 ER PT J AU Chung, SW LaTour, JV DeYoreo, JJ Tarasow, TM Gugliotti, LA Feldheim, DL Eaton, BE AF Chung, Sung-Wook LaTour, John V. DeYoreo, James J. Tarasow, Ted M. Gugliotti, Lina A. Feldheim, Daniel L. Eaton, Bruce E. TI COLL 576-Growth of metal nanostructures on templates of RNA-aptamer catalysts formed by scanned probe nanolithography SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Tarasow, Ted M.] Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94551 USA. [Gugliotti, Lina A.; Feldheim, Daniel L.] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA. [Eaton, Bruce E.] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 576-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603466 ER PT J AU Chusuei, CC Hull, RV Fitts, JP AF Chusuei, Charles C. Hull, Robert V. Fitts, Jeffrey P. TI COLL 327-Effect of increased aqueous Fe(II) on the formation of uranium-containing nanoparticles on green rust SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Chusuei, Charles C.; Hull, Robert V.] Univ Missouri, Rolla, MO 65409 USA. [Fitts, Jeffrey P.] Brookhaven Natl Lab, Dept Environm Sci, Upton, NY 11973 USA. RI Fitts, Jeffrey/J-3633-2012 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 327-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603160 ER PT J AU Clark, DL Conradson, SD Gordon, PL Keogh, DW Tait, CD AF Clark, David L. Conradson, Steven D. Gordon, Pamela L. Keogh, D. Webster Tait, C. Drew TI GEOC 134-Cleaning up the legacy of the Cold War: Plutonium oxides and the role of synchrotron radiation research SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Clark, David L.] Los Alamos Natl Lab, Nucl Mat & Technol Div, Los Alamos, NM 87545 USA. [Conradson, Steven D.] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA. [Gordon, Pamela L.; Keogh, D. Webster; Tait, C. Drew] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 134-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605276 ER PT J AU Click, DR Coleman, CJ Bannochie, CJ Bibler, NE Herman, CC Zeigler, KE Pareizs, JM AF Click, Damon R. Coleman, Charles J. Bannochie, Christopher J. Bibler, Ned E. Herman, Connie C. Zeigler, Kristine E. Pareizs, John M. TI NUCL 49-Analytical method verification, development and qualification of the next macro-batch feed of radioactive high-level waste sludge to the defense waste processing facility SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Click, Damon R.; Coleman, Charles J.; Bannochie, Christopher J.; Bibler, Ned E.; Herman, Connie C.; Zeigler, Kristine E.; Pareizs, John M.] Savannah River Natl Lab, Aiken, SC 29808 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 49-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605509 ER PT J AU Coleman, CJ Edwards, TB Click, DR Zeigler, KE Hart, JC Herman, CC Kaiser, BJ Arakali, AV AF Coleman, C. J. Edwards, T. B. Click, D. R. Zeigler, K. E. Hart, J. C. Herman, C. C. Kaiser, B. J. Arakali, A. V. TI NUCL 48-Development of rapid dissolution methods for process control of the Hanford Waste Treatment and Immobilization Plant SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Coleman, C. J.; Edwards, T. B.; Click, D. R.; Zeigler, K. E.; Hart, J. C.; Herman, C. C.] Savannah River Natl Lab, Aiken, SC 29808 USA. [Kaiser, B. J.; Arakali, A. V.] Washington Grp Int, Richland, WA 99354 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 48-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605419 ER PT J AU Cowin, JP Lilach, Y Iedema, MJ AF Cowin, James P. Lilach, Yigal Iedema, Martin J. TI COLL 527-Dissociation of "buried water" under ice on Pt(111) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cowin, James P.; Lilach, Yigal; Iedema, Martin J.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 527-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603721 ER PT J AU Criscenti, LJ Larentzos, JP AF Criscenti, Louise J. Larentzos, James P. TI GEOC 1-Calculating the relative stability of alkaline earth metal-chloride complexes in aqueous solution and on gibbsite surfaces SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Criscenti, Louise J.; Larentzos, James P.] Sandia Natl Labs, Dept Geochem, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 1-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605399 ER PT J AU Cui, LF Huang, X Wang, LM Zubarev, DY Boldyrev, AI Li, J Wang, LS AF Cui, Li-Feng Huang, Xin Wang, Lei-Ming Zubarev, Dmitry Yu. Boldyrev, Alexander I. Li, Jun Wang, Lai-Sheng TI PRES 28-Sn122-: Stannaspherene SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cui, Li-Feng; Huang, Xin; Wang, Lei-Ming; Wang, Lai-Sheng] Washington State Univ, Dept Phys, Richland, WA 99354 USA. [Zubarev, Dmitry Yu.] Utah State Univ, Dept Chem & Biochem, Logan, UT 84322 USA. [Li, Jun] Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. RI Boldyrev, Alexander/C-5940-2009 OI Boldyrev, Alexander/0000-0002-8277-3669 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 28-PRES PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605734 ER PT J AU D'Auria, R Tobias, DJ Gerber, RB Miller, Y Xantheas, SS AF D'Auria, Raffaella Tobias, Douglas J. Gerber, R. Benny Miller, Yifat Xantheas, Sotiris S. TI COLL 187-On the interfacial reaction mechanism between OH and Cl-: A detailed description of the mechanism leading to release of gaseous Cl2 from marine aerosols SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [D'Auria, Raffaella; Tobias, Douglas J.; Gerber, R. Benny] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. [D'Auria, Raffaella; Tobias, Douglas J.] Univ Calif Irvine, AirUCI, Irvine, CA 92697 USA. [Miller, Yifat] Hebrew Univ Jerusalem, Dept Chem, Jerusalem, Israel. [Xantheas, Sotiris S.] Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. RI Xantheas, Sotiris/L-1239-2015 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 187-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781603638 ER PT J AU Das, A Poliakoff, ED Bozek, JD Lucchese, RR AF Das, Aloke Poliakoff, Erwin D. Bozek, John D. Lucchese, R. R. TI PHYS 392-Mode-specific photoelectron scattering dynamics of complex polyatomic systems in molecular photoionization SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Das, Aloke; Poliakoff, Erwin D.] Louisiana State Univ, Dept Chem, Baton Rouge, LA 70803 USA. [Bozek, John D.] Stanford Synchrotron Radiat Lab, Linear Coherent Light Source, Menlo Pk, CA 94025 USA. [Lucchese, R. R.] Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA. RI Bozek, John/E-9260-2010 OI Bozek, John/0000-0001-7486-7238 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 392-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609305 ER PT J AU DeClue, MS Monnard, PA Collis, G Bailey, JA Boncella, J AF DeClue, Michael S. Monnard, Pierre-Alain Collis, Gavin Bailey, James A. Boncella, Jim TI ORGN 676-Synthetic approach towards a protocell SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [DeClue, Michael S.; Monnard, Pierre-Alain; Collis, Gavin; Bailey, James A.; Boncella, Jim] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 676-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781608372 ER PT J AU Deskins, NA Dupuis, M AF Deskins, N. Aaron Dupuis, Michel TI PHYS 29-Electron transport study of TiO2 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Deskins, N. Aaron; Dupuis, Michel] Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 29-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609170 ER PT J AU Diaconu, CV Doll, JD Freeman, DL AF Diaconu, Cristian V. Doll, J. D. Freeman, David L. TI INOR 652-Towards understanding the role of the titanium in the hydrogenation and dehydrogenation of sodium alanate: A hybrid density functional study SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Diaconu, Cristian V.] Los Alamos Natl Lab, Div Theoret, Grp T12, Los Alamos, NM 87545 USA. [Doll, J. D.] Brown Univ, Dept Chem, Providence, RI 02912 USA. [Freeman, David L.] Univ Rhode Isl, Dept Chem, Kingston, RI 02881 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 652-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781607827 ER PT J AU Diaconu, CV Martin, RL Prodan, ID Scuseria, GE AF Diaconu, Cristian V. Martin, Richard L. Prodan, Ionut D. Scuseria, Gustavo E. TI INOR 908-Hybrid density functional study of Mott transition in MnO under pressure SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Diaconu, Cristian V.; Martin, Richard L.] Los Alamos Natl Lab, Div Theoret, Grp T 12, Los Alamos, NM 87545 USA. [Prodan, Ionut D.] Rice Univ, Dept Phys, Houston, TX 77005 USA. [Prodan, Ionut D.] Rice Univ, Rice Quantum Inst, Houston, TX 77005 USA. [Scuseria, Gustavo E.] Rice Univ, Dept Chem, Houston, TX 77005 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 908-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781606576 ER PT J AU Dietz, ML Rickert, PG Antonio, MR Firestone, MA Wishart, JF Szreder, T AF Dietz, Mark L. Rickert, Paul G. Antonio, Mark R. Firestone, Millicent A. Wishart, James F. Szreder, Tomasz TI PHYS 100-Preparation and characterization of polyoxometalate-based ionic liquids SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Dietz, Mark L.; Rickert, Paul G.; Antonio, Mark R.] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. [Firestone, Millicent A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Wishart, James F.; Szreder, Tomasz] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 4 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 100-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781609486 ER PT J AU Dixit, S Carroll, SA Knauss, KG AF Dixit, Suvasis Carroll, Susan A. Knauss, Kevin G. TI GEOC 32-Effect of solution saturation state and temperature on diopside dissolution SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Knauss, Kevin G.] Lawrence Livermore Natl Lab, LLNL, Energy & Environm Directorate, Livermore, CA 94550 USA. RI knauss, kevin/K-2827-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD SEP 10 PY 2006 VL 232 MA 32-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V15DB UT WOS:000207781605384 ER EF