FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Thomas, SC Ren, XM Gottesfeld, S Zelenay, P AF Thomas, SC Ren, XM Gottesfeld, S Zelenay, P TI Direct methanol fuel cells: progress in cell performance and cathode research SO ELECTROCHIMICA ACTA LA English DT Article DE methanol; fuel cell; cathode performance ID POLYMER ELECTROLYTE MEMBRANE; OXYGEN-REDUCTION; ELECTROOSMOTIC DRAG; CROSSOVER; OXIDATION; ALLOYS; ELECTROREDUCTION; ELECTROOXIDATION; CATALYSTS; CARBON AB Research presented in this paper focuses on several factors affecting the performance of direct-methanol fuel cells (DMFCs) under development for either transportation or portable power applications. In particular, we discuss long-term stability of the anode, and crossover of methanol. We report on recent accomplishments in cell performance, fuel utilization, overall conversion efficiency, and lowering Pt loading in DMFCs designed for the potential use in automotive transportation. We describe a method of evaluation of cathode performance based on cathode polarization curves, generated from DMFC data. With this method, we have studied the effect of variation of temperature on DMFC cathode potential. Our results show that Pt-rich DMFC cathodes, operating on ambient air at 60 degreesC, can deliver high performance of more than 0.85 V versus RHE at 0.100 A cm(-2). (C) 2002 Published by Elsevier Science Ltd. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Thomas, SC (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RI ren, xiaoming/F-3953-2011 NR 52 TC 207 Z9 218 U1 4 U2 39 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 AUG 30 PY 2002 VL 47 IS 22-23 BP 3741 EP 3748 AR PII S0013-4686(02)00344-4 DI 10.1016/S0013-4686(02)00344-4 PG 8 WC Electrochemistry SC Electrochemistry GA 594VF UT WOS:000178071500017 ER PT J AU Schmidt, TJ Stamenkovic, V Arenz, M Markovic, NM Ross, PN AF Schmidt, TJ Stamenkovic, V Arenz, M Markovic, NM Ross, PN TI Oxygen electrocatalysis in alkaline electrolyte: Pt(hkl), Au(hkl) and the effect of Pd-modification SO ELECTROCHIMICA ACTA LA English DT Article DE oxygen reduction reaction (ORR); rotating ring-disk electrode (RRDE); Pt(hkl); Au(hkl) ID SINGLE-CRYSTAL SURFACES; HYDROGEN-PEROXIDE REDUCTION; AU(100) SURFACE; CO OXIDATION; ELECTROCHEMISTRY; ADSORPTION; PALLADIUM; AU(111); TEMPERATURE; PT(111) AB The kinetics of the oxygen reduction reaction (ORR) was studied in alkaline electrolyte at 293-333 K on bare and Pd modified Pt(hkl) and Au(hkl) surfaces. The rotating ring-disk electrode technique was used to study the ORR with solution phase peroxide detected at the ring electrode. Pd modification was either by electrodeposition (Pt) or by vapor deposition in vacuum (An). The surface concentration of Pd was determined in vacuum using low energy ion scattering. In agreement to the structure sensitivity found at room temperature previously, on the bare Au(hkl) surfaces the ORR was found to be strongly structure sensitive in the temperature range from 293 to 333 K, with order of activity being (100) much greater than (110) > (111). The structure sensitivity for Pt(hkl) is much less and varies in the nearly the opposite order (111) > (100) > (110). The peroxide intermediate pathway is clearly operative on Au(hkl) surfaces. At elevated temperature, significantly smaller amounts of peroxide are formed. The kinetics of the ORR were significantly enhanced by modification of both Pt(hkl) and Au(hkl) surfaces with Pd. The catalytic effect is most pronounced on the surfaces that are less active surfaces in the unmodified state, with enhancement at least an order of magnitude faster kinetics. Pd modification of the Au(hkl) surfaces, therefore, significantly reduces the structure sensitivity of the ORR. Even on the highly active Pt(111) surface the kinetics can be improved by a factor of approximately two to four due to Pd modification. The catalytic enhancement can be achieved with as little as 18 at.% Pd in the Au(hkl) surface. (C) 2002 Published by Elsevier Science Ltd. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Paul Scherrer Inst, CH-5232 Villigen, Switzerland. Univ Bonn, D-5300 Bonn, Germany. RP Schmidt, TJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Schmidt, Thomas/A-2586-2010; Arenz, Matthias/C-7385-2009; Arenz, Matthias/C-3195-2016 OI Schmidt, Thomas/0000-0002-1636-367X; Arenz, Matthias/0000-0001-9765-4315; Arenz, Matthias/0000-0001-9765-4315 NR 39 TC 135 Z9 138 U1 16 U2 161 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 AUG 30 PY 2002 VL 47 IS 22-23 BP 3765 EP 3776 AR PII S0013-4686(02)00347-X DI 10.1016/S0013-4686(02)00347-X PG 12 WC Electrochemistry SC Electrochemistry GA 594VF UT WOS:000178071500020 ER PT J AU Inoue, H Brankovic, SR Wang, JX Adzic, RR AF Inoue, H Brankovic, SR Wang, JX Adzic, RR TI Oxygen reduction on bare and Pt monolayer-modified Ru(0001), Ru(1010) and Ru nanostructured surfaces SO ELECTROCHIMICA ACTA LA English DT Article DE ruthenium; platinum; bimetallic surfaces; oxygen reduction; rotating disk-ring electrode ID SINGLE-CRYSTAL SURFACES; SPONTANEOUS DEPOSITION; RUTHENIUM ELECTRODE; ALKALINE-SOLUTION; DISK ELECTRODE; AU(100); CO; ELECTROCATALYSIS; PALLADIUM; ALLOYS AB Oxygen reduction kinetics on bare and Pt-modified Ru(10 (1) over bar0) and Ru(0001) single crystal surfaces, and on carbon-supported Ru nanoparticles have been investigated. Spontaneous deposition of Pt was used to form approximately 1.5 and 0.5 monolayers on Ru single crystals and nanoparticles, respectively. The reaction kinetics of O-2 on single crystal surfaces has a small structural dependence. It is also affected by the oxidation state of the Ru surfaces. The reaction involves the exchange of approximately four electrons per O-2 molecule, with the transfer of the first electron being the rate determining step. A deposit of 1.5 monolayers of Pt makes the surfaces considerably more active than bare Ru, but nevertheless still less active than bulk Pt. An electrocatalyst made by the deposition 0.5 monolayers of Pt on carbon-supported Ru nanoparticles is somewhat less active than commercial catalysts, but contains considerably lower Pt loadings. (C) 2002 Elsevier Science Ltd. All rights reserved. C1 Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA. RP Adzic, RR (reprint author), Brookhaven Natl Lab, Dept Mat Sci, Bldg 555, Upton, NY 11973 USA. RI Wang, Jia/B-6346-2011 NR 33 TC 50 Z9 51 U1 1 U2 31 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 AUG 30 PY 2002 VL 47 IS 22-23 BP 3777 EP 3785 AR PII S0013-4686(02)00348-1 DI 10.1016/S0013-4686(02)00348-1 PG 9 WC Electrochemistry SC Electrochemistry GA 594VF UT WOS:000178071500021 ER PT J AU Paulus, UA Wokaun, A Scherer, GG Schmidt, TJ Stamenkovic, V Markovic, NM Ross, PN AF Paulus, UA Wokaun, A Scherer, GG Schmidt, TJ Stamenkovic, V Markovic, NM Ross, PN TI Oxygen reduction on high surface area Pt-based alloy catalysts in comparison to well defined smooth bulk alloy electrodes SO ELECTROCHIMICA ACTA LA English DT Article DE rotating ring-disk-electrode; oxygen reduction; platinum alloy ID SINGLE-CRYSTAL SURFACES; SULFURIC-ACID; FUEL-CELLS; DISK ELECTRODE; ELECTROCATALYTIC PROPERTIES; PHOSPHORIC-ACID; PLATINUM; CO; CHEMISORPTION; PERFORMANCE AB The oxygen reduction reaction (orr) has been studied on carbon supported multimetallic catalysts in aqueous acidic electrolyte. The bimetallic catalysts had the nominal compositions of 50 and 75 at.% Pt with the alloying elements being Ni and Co. A ternary catalyst consisted of Pt, Rh and Fe in the ratio of 1:0.3:0.7. Comparison is made to carbon supported Pt. The particle size distribution of the metallic phases was obtained by high resolution transmission electron microscopy (HRTEM). An estimation of the surface composition was obtained from the hydrogen adsorption charge and the particle size. Electrochemical measurements were performed using the thin-film rotating ring-disk electrode (RRDE) method in 0.1 M HClO4 at 20-60 degreesC. Kinetic analysis in comparison to pure Pt revealed an activity enhancement (per Pt surface atom) of a factor of 2 to 3 for the 50 at.% Co-catalyst. The 25 at.% Co(Ni) and the ternary catalyst revealed similar activity compared with pure Pt. The 50 at.% Ni catalyst was actually less active than the Pt standard and unstable at oxygen electrode potentials. Ring-current collection measurements for peroxide indicated no significant differences between the alloy catalysts and pure Pt with the exception of the 50 at.% Ni catalyst which had a higher peroxide yield. Comparison was also made to results obtained under equal experimental conditions on polycrystalline (pc) Pt3Ni and Pt3Co alloy electrodes. These bulk alloys were prepared in UHV to obtain a well defined surface composition of 75 at.% Pt and 25 at.% Co and Ni, respectively. A Pt(pc) electrode served for comparison. The bulk alloys also have an enhanced activity for the orr by about a factor of 2 versus the identically prepared Pt(pc) electrode. (C) 2002 Elsevier Science Ltd. All rights reserved. C1 Paul Scherrer Inst, Lab Electrochem, CH-5232 Villigen, Switzerland. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Paulus, UA (reprint author), Paul Scherrer Inst, Lab Electrochem, CH-5232 Villigen, Switzerland. RI Schmidt, Thomas/A-2586-2010 OI Schmidt, Thomas/0000-0002-1636-367X NR 47 TC 387 Z9 392 U1 27 U2 230 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 AUG 30 PY 2002 VL 47 IS 22-23 BP 3787 EP 3798 AR PII S0013-4686(02)00349-3 DI 10.1016/S0013-4686(02)00349-3 PG 12 WC Electrochemistry SC Electrochemistry GA 594VF UT WOS:000178071500022 ER PT J AU Uribe, FA Zawodzinski, TA AF Uribe, FA Zawodzinski, TA TI A study of polymer electrolyte fuel cell performance at high voltages. Dependence on cathode catalyst layer composition and on voltage conditioning SO ELECTROCHIMICA ACTA LA English DT Article DE fuel cell; ORR; cathode catalyst; voltage pulsing ID OXYGEN REDUCTION; ALLOYS; MICROELECTRODE; ENHANCEMENT; INTERFACE; MEMBRANES; FE AB We report polymer electrolyte fuel cell (PEFC) performances at high cell voltages ( > 0.7 V). We have tested various carbon supported Pt-M alloys (M: Cr, Ni, Rh, Sn) as cathode catalysts and compared performances with Pt/C. Pt-Ni and Pt-Cr provided the best results. Fuel cell performance at high constant voltages ( > 0.8 V) decreases rapidly with time. Within 1 h currents may drop to one half of their original value. Experiments strongly suggest that, at these voltages, there is an inherent Pt activity loss for oxygen reduction reaction (ORR) due to adsorption of oxygenated species from water. We also demonstrate that OH- species (from water oxidation), which block Pt active sites, adsorb at more positive voltages on Pt-M than on Pt surfaces. Thus, we conclude that the Pt surfaces of these alloys are more active for the ORR because of slower OH- species adsorption at high cell voltages. We have also found that short time cell voltage excursions from 0.8 to 0.5 V or lower at regular intervals, completely recovers the loss of performance. Consistent with our other results, pulsing to lower voltages reactivates the Pt surface by electrodesorption of OH- or other anions. Published by Elsevier Science Ltd. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Uribe, FA (reprint author), Los Alamos Natl Lab, MST-11,MS-D429, Los Alamos, NM 87545 USA. NR 16 TC 69 Z9 73 U1 3 U2 14 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 AUG 30 PY 2002 VL 47 IS 22-23 BP 3799 EP 3806 AR PII S0013-4686(02)00350-X DI 10.1016/S0013-4686(02)00350-X PG 8 WC Electrochemistry SC Electrochemistry GA 594VF UT WOS:000178071500023 ER PT J AU Jones, ED Reno, JL Crooker, S Bajaj, KK Coli, G AF Jones, ED Reno, JL Crooker, S Bajaj, KK Coli, G TI High magnetic field dependent diamagnetic shifts in AlxGa1-xAs semiconductor alloys SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Fields CY OCT 19-25, 2001 CL SANTA FE, NM AB Low temperature diamagnetic shifts and FWHM linewidths of excitonic transitions in AlxGa1-xAs alloys are reported as a function of magnetic field (50T maximum) at 4K using photoluminescence spectroscopy. Two samples with aluminum compositions of 5 and 20%, are discussed. The slope of the diamagnetic shift at high fields allows a direct measure of the excitonic reduced mass mu. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Los Alamos Natl Lab, NHMFL, Los Alamos, NM USA. Emory Univ, Dept Phys, Atlanta, GA 30322 USA. RP Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM edjones@sandia.gov; crookers@lanl.gov; phskkb@physics.emory.edu NR 5 TC 1 Z9 1 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-9792 EI 1793-6578 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 2960 EP 2963 DI 10.1142/S0217979202013316 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100013 ER PT J AU Negre, N Crooker, SA Wois, A Karczewski, G AF Negre, N Crooker, SA Wois, A Karczewski, G TI High magnetic field optical studies of charged exciton in CdTe 2D electron gases SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. Wroclaw Univ Technol, Inst Phys, Wroclaw, Poland. Polish Acad Sci, Inst Phys, Warsaw, Poland. RP Negre, N (reprint author), Los Alamos Natl Lab, NHMFL, POB 1663, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 2972 EP 2972 DI 10.1142/S0217979202013341 PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100016 ER PT J AU Cornelius, AL Ebihara, T Lawrence, JM Riseborough, PS Thompson, JD AF Cornelius, AL Ebihara, T Lawrence, JM Riseborough, PS Thompson, JD TI Observation of a second energy scale in YbAl3 above 40 T SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Fields CY OCT 19-25, 2001 CL SANTA FE, NM ID ALPHEN AB YbAl3 is an intermediate valent compound with a Kondo temperature T-K in excess of 500 K and a rather low conduction electron density of similar to0.5/atom. Recent measurements are suggestive of a second energy scale T-coh of order 50 K that dominates the low temperature (T<< T-coh) thermodynamic properties. Previous de Haas-van Alphen (dHvA) measurements on YbAl3 in magnetic fields to 17 T reveal a fairly simple Fermi surface with 6 branches having effective masses m* ranging from 8 to 24 m(0) (see Refs. [2-3]). We report magnetization and dHvA results on YbAl3 in pulsed magnetic fields up to 60 T. For T<< T-coh we indeed find that the magnetization "crosses" over from the zero field energy scale (T,M) to the high temperature energy scale T-K at a magnetic field B* approximate to40 T (approximate tok(B)T(coh)/mu(B)). For B> B*, we find dHvA oscillations when magnetic field is applied along the <100>, <110> and <111> directions. For magnetic field applied along <111>, the Fermi surface changes very little for B> B*, and the effective masses are all reduced by a factor of 2-3 relative to their low field values. This is due to the large change in the characteristic temperature, which goes from T-coh below B* to T-K above B*. We believe this is the first work to directly observe the two energy scales and to observe the crossover in the dominant energy scale as a function of magnetic field. C1 Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA. Shizuoka Univ, Dept Phys, Fac Sci, Shizuoka 4228529, Japan. Univ Calif Irvine, Dept Phys, Irvine, CA 92697 USA. Temple Univ, Dept Phys, Philadelphia, PA 19122 USA. Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA. EM cornel@physics.unlv.edu; sptebih@ipc.shizuoka.ac.jp; jmlawren@uci.edu; prisebor@astro.temple.edu; jdt@lanl.gov RI Cornelius, Andrew/A-9837-2008 NR 8 TC 0 Z9 0 U1 5 U2 11 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-9792 EI 1793-6578 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 2992 EP 2997 DI 10.1142/S0217979202013419 PG 6 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100023 ER PT J AU Hall, D Murphy, TP Palm, EC Tozer, SW Fisk, Z Harrison, N Goodrich, RG Alver, U Sarrao, JL AF Hall, D Murphy, TP Palm, EC Tozer, SW Fisk, Z Harrison, N Goodrich, RG Alver, U Sarrao, JL TI The de Haas van Alphen effect in CeMIn5 (where M = Rh and Co) SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID FERMI-SURFACE; ART.; SUPERCONDUCTIVITY AB To understand the electronic structure of the heavy fermion superconductors CeMIn5, we have performed a comprehensive magnetic study of these materials.(1-4) Our quantum oscillation studies reveal that the Fermi surface becomes systematically more 2-d (and displays heavier effective masses) as one progresses from M=Rh to M=Ir to M=Co, consistent with the observed increase in superconducting T-c. Furthermore, dilution studies show that the f-electrons in CeRhIn5 are substantially localized whereas in CeIrIn5 and CeCoIn5 a more itinerant character is observed. C1 Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hall, D (reprint author), Natl High Magnet Field Lab, 1800 E Paul Dirac Dr, Tallahassee, FL 32310 USA. NR 16 TC 6 Z9 6 U1 0 U2 4 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3004 EP 3007 DI 10.1142/S0217979202013432 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100025 ER PT J AU Sarrao, JL AF Sarrao, JL TI CeMIn5 (M=Co, Ir, Rh) heavy fermion superconductors and the utility of high magnetic fields SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Fields CY OCT 19-25, 2001 CL SANTA FE, NM ID HAAS-VAN-ALPHEN; UNCONVENTIONAL SUPERCONDUCTIVITY; CECOIN5; CEIRIN5; PRESSURE; CERHIN5; NMR; GAP; NQR; CO AB We review the properties of the recently discovered CeMIn5 (M=Co, Ir, Rh) heavy fermion superconductors and discuss the present state of our understanding of these materials. A particular focus is the role that magnetic fields have played in elucidating the properties of these materials. Specifically, we discuss quantum oscillation measurements on CeMIn5, the influence of applied field on the linear coefficient of specific heat, gamma, and the nature of the HT phase diagrams in both the normal and superconducting states of these materials. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM sarrao@lanl.gov NR 41 TC 1 Z9 1 U1 1 U2 3 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-9792 EI 1793-6578 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3025 EP 3030 DI 10.1142/S0217979202013481 PG 6 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100030 ER PT J AU Suslov, A Dasgupta, D Feller, JR Sarma, BK Ketterson, JB Hinks, DG Jaime, M Balakirev, F Migliori, A Lacerda, A AF Suslov, A Dasgupta, D Feller, JR Sarma, BK Ketterson, JB Hinks, DG Jaime, M Balakirev, F Migliori, A Lacerda, A TI Ultrasonic measurements at the metamagnetic transition in URu2Si2 SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID FERMION AB Ultrasonic velocity measurements were performed on a single crystal of URu2Si2 at various temperatures in the 20 ms 50T pulsed magnets at the NHMFL, Los Alamos, NM. At 4 K a three-fold splitting of the metamagnetic transition is seen; corresponding features were observed earlier in magnetization studies. As the temperature is raised, the three-fold splitting evolves first into two features, then into a single broad dip, after which it disappears entirely. C1 Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA. Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. RP Suslov, A (reprint author), Univ Wisconsin, Dept Phys, POB 413, Milwaukee, WI 53201 USA. RI Ketterson, John/B-7234-2009; Suslov, Alexey/M-7511-2014; Jaime, Marcelo/F-3791-2015 OI Suslov, Alexey/0000-0002-2224-153X; Jaime, Marcelo/0000-0001-5360-5220 NR 3 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3037 EP 3040 DI 10.1142/S021797920201350X PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100032 ER PT J AU Chang, S Nakotte, H Alsmadi, AM Lacerda, AH Jung, MH Mihalik, M Prokes, K Klaasse, JCP Bruck, E De Boer, FR AF Chang, S Nakotte, H Alsmadi, AM Lacerda, AH Jung, MH Mihalik, M Prokes, K Klaasse, JCP Bruck, E De Boer, FR TI High-field magnetization, longitudinal and transverse magnetoresistance of UIrGe SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID ELECTRONIC-PROPERTIES AB UIrGe crystallizes in the orthorhombic TiNiSi structure and undergoes an antiferromagnetic transition around 14.1 K. The low-temperature longitudinal magnetoresistance (I // B) exhibits a pronounced field-induced step at about 13 T (14 T) and a much weaker step at about 17 T (out of field range) for B // b axis (c axis). No transition was seen for B // a. Here, we report on the magnetization results in fields up to 38 T applied along the principle directions. In addition, we present new magnetoresistance results taken in the transverse (I perpendicular to B) configuration in fields up to 18 T applied along the c axis. The data show intriguing differences in comparison to those taken in the longitudinal configuration. The results are discussed in terms of field-induced magnetic transitions and/or Fermi-surface changes. C1 Los Alamos Natl Lab, Pulsed Field Facil, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA. Slovak Acad Sci, Inst Expt Phys, Kosice 04354, Slovakia. Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany. Univ Amsterdam, Van Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands. RP Chang, S (reprint author), Los Alamos Natl Lab, Pulsed Field Facil, Natl High Magnet Field Lab, MST 10,MS K764, Los Alamos, NM 87545 USA. RI Bruck, Ekkes/E-3365-2014 NR 10 TC 4 Z9 4 U1 1 U2 10 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3041 EP 3044 DI 10.1142/S0217979202013511 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100033 ER PT J AU Christianson, AD Lacerda, AH Pagliuso, PG Moreno, NO Hundley, MF Sarrao, JL AF Christianson, AD Lacerda, AH Pagliuso, PG Moreno, NO Hundley, MF Sarrao, JL TI High field magnetotransport in CeRh1-xIrxIn5 heavy electron alloys SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID SUPERCONDUCTIVITY; CERHIN5 AB The interplay of magnetism and superconductivity has been a recurring theme in heavy fermion compounds. Recently, alloys of CeRhIn5 (antiferromagnet at 3.8 K) and CeIrIn5 (superconductor at 0.4 K) have been grown, i.e. CeRh1-xIrxIn5. For x = 0.5, specific heat and magnetic susceptibility measurements indicate at similar to3.6 K an antiferromagnetic transition occurs. Decreasing temperature still further, a superconducting transition is observed at 0.8 K. Thus this alloy series offers the possibility of exploring the coexistence of superconductivity and magnetism in a Cc-based heavy fermion system. We have initiated a magnetotransport study from 1.4 to 300 K with applied fields to 18 T, to probe the behavior of these systems at temperatures above the possible coexistence region. In this paper we will focus on comparing the high field magnetotransport properties of CeRh0.9Ir0.1In5 to the end compounds CeRhln(5) and CeIrln(5). C1 Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Condensed Matter & Thermal Phys Grp, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA. Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA. RP Christianson, AD (reprint author), Los Alamos Natl Lab, Natl High Magnet Field Lab, MS E536, Los Alamos, NM 87545 USA. RI Pagliuso, Pascoal/C-9169-2012; Moreno, Nelson/H-1708-2012; christianson, andrew/A-3277-2016 OI Moreno, Nelson/0000-0002-1672-4340; christianson, andrew/0000-0003-3369-5884 NR 8 TC 0 Z9 0 U1 1 U2 2 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3045 EP 3048 DI 10.1142/S0217979202013523 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100034 ER PT J AU Goodrich, RG Alver, U Harrison, N Sarrao, JL Hall, D Fisk, Z AF Goodrich, RG Alver, U Harrison, N Sarrao, JL Hall, D Fisk, Z TI dHvA measurements on La1-xCexMIn5 where M=Rh, Ir and Co SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Louisiana State Univ, Dept Phys, Baton Rouge, LA 70803 USA. Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Condensed Matter & Thermal Phys, Los Alamos, NM 87545 USA. Florida State Univ, NHMFL, Tallahassee, FL 32301 USA. RP Goodrich, RG (reprint author), Louisiana State Univ, Dept Phys, 202 Nicholson Hall, Baton Rouge, LA 70803 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3049 EP 3049 DI 10.1142/S0217979202013535 PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100035 ER PT J AU Jung, MH Harrison, N Lacerda, AH Pagliuso, PG Sarrao, JL Thompson, JD AF Jung, MH Harrison, N Lacerda, AH Pagliuso, PG Sarrao, JL Thompson, JD TI Anisotropic properties of single-crystalline CeNiGe2 SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID KONDO AB The anisotropic properties of CeNiGe2 with a layered crystal structure have been studied by measurements of electrical resistivity, magnetic susceptibility and magnetization. It is confirmed that CeNiGe2 undergoes two-step antiferromagnetic transition at T-N(I) = 4 K and T-N(H) = 3 K as reported earlier on polycrystalline samples. CeNiGe2 is found to exhibit highly anisotropic properties with an easy magnetization axis along the longest crystallographic b direction. The magnetization ratio M(H//b)/M(Hperpendicular tob) is estimated to be about 15 at 5 T. The in-plane resistivity rho(perpendicular tob)(T) shows double maxima typical of that expected when an interplay of crystal-field and Kondo effects plays a role. The low-T maximum at 4 K in rho(perpendicular tob)(T) is strongly suppressed with increasing magnetic field. This negative magnetoresistance is a result of the strong reduction of magnetic scattering by the ferromagnetic alignment of Ce magnetic moments. C1 Los Alamos Natl Lab, Pulse Facil, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Condensed Matter & Thermal Phys, Los Alamos, NM 87545 USA. RP Jung, MH (reprint author), Los Alamos Natl Lab, Pulse Facil, Natl High Magnet Field Lab, MS E536, Los Alamos, NM 87545 USA. RI Pagliuso, Pascoal/C-9169-2012 NR 9 TC 0 Z9 0 U1 1 U2 5 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3050 EP 3053 DI 10.1142/S0217979202013547 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100036 ER PT J AU Suslov, A Dasgupta, D Feller, JR Sarma, BK Ketterson, JB Hinks, DG AF Suslov, A Dasgupta, D Feller, JR Sarma, BK Ketterson, JB Hinks, DG TI Ultrasonic and magnetization studies at the metamagnetic transition in UPt3 SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO AB The velocity and attenuation of longitudinal ultrasound were measured on two single crystals Of UPt3 in magnetic fields up to 33 T and temperatures down to 40 mK. For fields applied in the basal plane, a strong dip in the velocity is seen at a field of 20 T in both samples and is accompanied by a simultaneous increase in the dc magnetization. At lower temperatures the dip gets more pronounced and sharper. At a temperature around 0.6 K the velocity dip develops a second feature at a slightly higher field of similar to21.6 T. C1 Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA. Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Suslov, A (reprint author), Univ Wisconsin, Dept Phys, POB 413, Milwaukee, WI 53201 USA. RI Ketterson, John/B-7234-2009; Suslov, Alexey/M-7511-2014 OI Suslov, Alexey/0000-0002-2224-153X NR 3 TC 0 Z9 0 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3066 EP 3069 DI 10.1142/S0217979202013584 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100040 ER PT J AU Harrison, N AF Harrison, N TI Persistent currents at fields above 23T SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID CHARGE-DENSITY-WAVE; HIGH MAGNETIC-FIELDS; ORGANIC CONDUCTOR; ALPHA-(BEDT-TTF)(2)KHG(SCN)(4); SUPERCONDUCTIVITY; METALS; SYSTEM; STATE AB Experimental studies made on organic conducting salts of the composition alpha-(BEDT-TTF)(2)MHg(SCN)(4) (where M = K, Tl and Rb) indicate that they exhibit persistent currents at magnetic fields exceeding 23T. The presence of currents cannot be explained by the quantum Hall effect, while superconductivity seems unlikely. All indications point towards a new type of dissipationless current flow involving relative gradients in the pinning of a CDW and quantized orbital magnetism. C1 Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. RP Harrison, N (reprint author), Los Alamos Natl Lab, NHMFL, MS-E536, Los Alamos, NM 87545 USA. NR 21 TC 1 Z9 1 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3072 EP 3077 DI 10.1142/S0217979202013602 PG 6 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100042 ER PT J AU Singleton, J Goddard, PA Ardavan, A Harrison, N Blundell, SJ Schlueter, JA Kini, AM AF Singleton, J Goddard, PA Ardavan, A Harrison, N Blundell, SJ Schlueter, JA Kini, AM TI High-magnetic-field tests for reduced dimensionality in organic superconductors: Just how valid are the Mott-Ioffe-Regel and Anderson criteria? SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID DEPENDENT MAGNETORESISTANCE OSCILLATIONS; FERMI-SURFACE; CONDUCTORS; METALS AB The interlayer transfer integrals of various organic superconductors have been deduced using high-magnetic-field techniques. The measurements demonstrate the inappropriateness of criteria used to denote incoherent interlayer transport. C1 Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Clarendon Lab, Oxford OX1 3PU, England. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Singleton, J (reprint author), Los Alamos Natl Lab, Natl High Magnet Field Lab, MS-E536, Los Alamos, NM 87545 USA. RI Kini, Aravinda/F-4467-2012; Goddard, Paul/A-8638-2015 OI Goddard, Paul/0000-0002-0666-5236 NR 20 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3078 EP 3083 DI 10.1142/S0217979202013614 PG 6 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100043 ER PT J AU Yu, W Brown, SE Zamborszky, F Lee, IJ Chaikin, PM AF Yu, W Brown, SE Zamborszky, F Lee, IJ Chaikin, PM TI NMR study of the antiferromagnetic to superconductor phase transition in (TMTSF)(2)PF6 SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID ORGANIC CONDUCTOR AB The pressure-tuned quantum phase transition from spin-density wave (SDW) to Fermi Liquid (FL) ground states is studied in (TMTSF)(2)PF6 by NMR relaxation and spectroscopy. As for recent transport measurements, we find evidence in the distribution of local hyperfine fields for phase segregation, from which we conclude the transition between normal and SDW phases is discontinuous. A tricritical point (TCP) is identified. A crossover to FL behavior identified by spin-lattice relaxation measurements intersects the normal to SDW phase boundary very close to the TCP. C1 Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. Los Alamos Natl Lab, MST Div, Los Alamos, NM 87545 USA. Princeton Univ, Dept Phys, Princeton, NJ 08544 USA. RP Yu, W (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. RI Yu, Weiqiang/E-9722-2012 NR 11 TC 10 Z9 10 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3090 EP 3095 DI 10.1142/S021797920201364X PG 6 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100046 ER PT J AU Balatsky, AV AF Balatsky, AV TI Magnetic field and impurity effects in pseudogap state of cuprates SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Balatsky, AV (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3133 EP 3133 DI 10.1142/S0217979202013754 PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100057 ER PT J AU Dai, P Mook, HA Hayden, SM Hiess, A Lee, SH Dogan, F AF Dai, P Mook, HA Hayden, SM Hiess, A Lee, SH Dogan, F TI Magnetism and superconductivity in YBa2Cu3O6+x superconductors SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37966 USA. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France. Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA. Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA. RP Dai, P (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37966 USA. RI Hayden, Stephen/F-4162-2011; Dai, Pengcheng /C-9171-2012 OI Hayden, Stephen/0000-0002-3209-027X; Dai, Pengcheng /0000-0002-6088-3170 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3147 EP 3147 DI 10.1142/S021797920201378X PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100060 ER PT J AU Krusin-Elbaum, L Shibauchi, T Maley, MP Li, M Kes, PH AF Krusin-Elbaum, L Shibauchi, T Maley, MP Li, M Kes, PH TI Pseudogap state of high T-c cuprates: A predominant role of spin degrees of freedom SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID INTERLAYER TUNNELING SPECTROSCOPY; SUPERCONDUCTING GAP; BI2SR2CACU2O8+DELTA; DEPENDENCE AB We map the field-temperature (H-T) diagram of the pseudogap state in Bi2Sr2CaCu2O8+y crystals in a wide range of hole doping. By probing the quasiparticle density-of-states with the c-axis interlayer resistivity measurements in fields up to 60 T we make a systematic evaluation of the pseudogap closing field H-pg that restores the superconductor to its ungapped state. In contrast to the characteristic fields of the superconducting state, H-pg(T) at low temperatures is temperature independent and scales with the pseudogap temperature T* by a simple Zeeman energy scale, indicating a predominant role of spins over the orbital effects in the formation of the pseudogap. C1 IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA. Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands. RP Krusin-Elbaum, L (reprint author), IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA. RI Shibauchi, Takasada/B-9349-2008 OI Shibauchi, Takasada/0000-0001-5831-4924 NR 12 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3149 EP 3154 DI 10.1142/S0217979202013808 PG 6 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100062 ER PT J AU Lake, B Mason, TE Aeppli, G Lefmann, K Christensen, NB McMorrow, DF Clausen, KN Ronnow, HM Vorderwisch, P Smeibidl, P Magnkorntong, N Hussey, NE Sasagawa, T Nohara, M Takagi, H Schroder, A AF Lake, B Mason, TE Aeppli, G Lefmann, K Christensen, NB McMorrow, DF Clausen, KN Ronnow, HM Vorderwisch, P Smeibidl, P Magnkorntong, N Hussey, NE Sasagawa, T Nohara, M Takagi, H Schroder, A TI Vortex magnetism in the high-temperatures superconductor La2-xSrxCuO4 SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NEC Res Ctr, Princeton, NJ USA. Riso Natl Lab, DK-4000 Roskilde, Denmark. CEA, Grenoble 9, France. Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France. Hahn Meitner Inst Berlin GmbH, BENSC, D-1000 Berlin, Germany. Univ Tokyo, Tokyo, Japan. Univ Karlsruhe, Karlsruhe, Germany. RP Lake, B (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI McMorrow, Desmond/C-2655-2008; Takagi, Hidenori/B-2935-2010; NOHARA, Minoru/B-1476-2011; Christensen, Niels/A-3947-2012; Sasagawa, Takao/E-6666-2014; Mason, Thomas/M-5809-2014; Lefmann, Kim/M-9228-2014; Hussey, Nigel/F-9699-2015; Ronnow, Henrik/A-4953-2009 OI McMorrow, Desmond/0000-0002-4947-7788; Lake, Bella/0000-0003-0034-0964; Christensen, Niels/0000-0001-6443-2142; Sasagawa, Takao/0000-0003-0149-6696; Mason, Thomas/0000-0003-1880-3971; Lefmann, Kim/0000-0003-4282-756X; Ronnow, Henrik/0000-0002-8832-8865 NR 0 TC 0 Z9 0 U1 1 U2 4 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3155 EP 3155 DI 10.1142/S021797920201381X PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100063 ER PT J AU Balakirev, FF Betts, JB Boebinger, GS Ono, S Ando, Y Murayama, T AF Balakirev, FF Betts, JB Boebinger, GS Ono, S Ando, Y Murayama, T TI Low-temperature normal-state Hall effect in high-T-c Bi2Sr2-xLaxCuO6+delta revealed by 60 T magnetic fields SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO AB We report low-temperature Hall coefficient in the normal state of the high-T-c superconductor Bi2Sr2-xLaxCuO6+delta. The Hall coefficient was measured down to 0.5 K by suppressing superconductivity with a 60 T pulsed magnetic field. The carrier concentration was varied from overdoped to underdoped regimes by partially substituting Sr with La in a set of five samples. The observed saturation of the Hall coefficient at low temperatures suggests the ability to extract the carrier concentration of each sample. The most underdoped sample exhibits a diverging Hall coefficient at low temperatures, consistent with a depletion of carriers in the insulating ground state. The Hall number exhibits a sharp peak providing additional support for the existence of a phase boundary at the optimal doping. C1 Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan. Sci Univ Tokyo, Dept Phys, Tokyo 1628601, Japan. RP Balakirev, FF (reprint author), Los Alamos Natl Lab, NHMFL, POB 1663, Los Alamos, NM 87545 USA. RI Ando, Yoichi/B-8163-2013 OI Ando, Yoichi/0000-0002-3553-3355 NR 5 TC 0 Z9 0 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3171 EP 3174 DI 10.1142/S0217979202013845 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100066 ER PT J AU Fisher, RA Bouquet, F Phillips, NE Hinks, DG Jorgensen, JD AF Fisher, RA Bouquet, F Phillips, NE Hinks, DG Jorgensen, JD TI Specific heat of (MgB2)-B-11 in magnetic fields: Two energy gaps in the superconducting state SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID MGB2 AB We present specific-heat measurements on (MgB2)-B-11 in magnetic fields to 9 T. The anomaly at T, is rapidly broadened and attenuated in fields, as expected for an anisotropic, randomly oriented superconductor. At low temperature there is a strongly field-dependent feature that shows the existence of a second energy gap. The Sommerfeld constant, gamma, increases rapidly and non-linearly with magnetic field, which cannot be accounted for by anisotropy. It approaches gamma(n) = 2.6 mJ K-2 mol(-1), the coefficient of the normal-state electron contribution, asymptotically for fields greater than 5 T. In zero magnetic field the data can be fitted with a phenomenological two-gap model, a generalization of a semi-empirical model for single-gap superconductors. Both of the gaps close at the same T-c one is larger and one smaller than the BCS weak coupling limit, in the ratio similar to 4:1, and each accounts for similar to 50% of the normal-state electron density of states. The parameters characterizing the fit agree well with those from theory and are in approximate agreement with some spectroscopic measurements. C1 Univ Calif Berkeley, LBNL, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Fisher, RA (reprint author), Univ Calif Berkeley, LBNL, Berkeley, CA 94720 USA. NR 18 TC 0 Z9 0 U1 0 U2 3 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3180 EP 3183 DI 10.1142/S0217979202013870 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100069 ER PT J AU Kim, KH Betts, JB Jaime, M Lacerda, AH Boebinger, GS Jung, CU Kim, HJ Kim, MS Kim, JY Du, Z Lee, SI AF Kim, KH Betts, JB Jaime, M Lacerda, AH Boebinger, GS Jung, CU Kim, HJ Kim, MS Kim, JY Du, Z Lee, SI TI Mg as a main source for the diverse magnetotransport properties of MgB2 SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO AB Magnetotransport properties of pure Mg metal and MgB2, samples with varying amounts of excess Mg were systematically studied in magnetic fields up to 18 T. It is found that the both the Mg and inhomogeneous MgB2 samples show large low temperature conductivity, residual resistance ratio (RRR) and magnetoresistance (MR) under high fields. Calculations of the generalized effective medium theory show that the large RRR and MR of the inhomogeneous MgB2 samples can be explained by unusual magnetotransport properties of pure Mg metal. C1 Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. Pohang Univ Sci & Technol, Natl Creat Res Initiat Ctr Superconduct, Pohang 790784, South Korea. Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea. RP Kim, KH (reprint author), Los Alamos Natl Lab, NHMFL, MS E536, Los Alamos, NM 87545 USA. RI Jaime, Marcelo/F-3791-2015 OI Jaime, Marcelo/0000-0001-5360-5220 NR 11 TC 1 Z9 1 U1 0 U2 2 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3185 EP 3188 DI 10.1142/S0217979202013894 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100071 ER PT J AU Lake, B Mason, TE Aeppli, G Lefmann, K Christensen, NB McMorrow, DF Clausen, KN Ronnow, HM Vorderwisch, P Smeibidl, P Mangkorntong, N Hussey, NE Sasagawa, T Nohara, M Takagi, H Schroder, A AF Lake, B Mason, TE Aeppli, G Lefmann, K Christensen, NB McMorrow, DF Clausen, KN Ronnow, HM Vorderwisch, P Smeibidl, P Mangkorntong, N Hussey, NE Sasagawa, T Nohara, M Takagi, H Schroder, A TI Field-induced antiferromagnetism in the high-temperature superconductor La2-xSrxCuO4 SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NEC Res Inst, Princeton, NJ 08540 USA. Riso Natl Lab, DK-4000 Roskilde, Denmark. CEA, Grenoble 9, France. Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France. Hahn Meitner Inst Berlin GmbH, BENSC, D-1000 Berlin, Germany. Univ Tokyo, Tokyo, Japan. Univ Karlsruhe, Karlsruhe, Germany. RP Lake, B (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI McMorrow, Desmond/C-2655-2008; Takagi, Hidenori/B-2935-2010; NOHARA, Minoru/B-1476-2011; Christensen, Niels/A-3947-2012; Sasagawa, Takao/E-6666-2014; Mason, Thomas/M-5809-2014; Lefmann, Kim/M-9228-2014; Hussey, Nigel/F-9699-2015; Ronnow, Henrik/A-4953-2009 OI Lake, Bella/0000-0003-0034-0964; McMorrow, Desmond/0000-0002-4947-7788; Christensen, Niels/0000-0001-6443-2142; Sasagawa, Takao/0000-0003-0149-6696; Mason, Thomas/0000-0003-1880-3971; Lefmann, Kim/0000-0003-4282-756X; Ronnow, Henrik/0000-0002-8832-8865 NR 0 TC 0 Z9 0 U1 1 U2 3 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3197 EP 3197 DI 10.1142/S0217979202013924 PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100074 ER PT J AU Mielke, CH AF Mielke, CH TI Using radio frequency penetration depth to probe layered superconductors SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO AB Measuring the electrical resistivity of layered superconductors yields interesting information regarding the mixed and normal state of the system. Because of the high degree of anisotropy of many systems it becomes impossible to distinguish between the relatively small resistivity associated with rho(xy) and the much. larger rho(zz) using traditional 4 lead techniques. Moreover, dissipation associated with vortex pining masks the crossover from superconducting to normal state. Recent development of radio frequency (rf) techniques in milli-second pulsed high magnetic fields have resulted in a powerful tool to investigate metals and superconductors at extremes in H-T space. The rf technique is sensitive to changes in the most conducting regions of the sample, hence the in-plane resistivity is measured. By measuring the change in skin depth as a function of applied magnetic field and temperature, a reliable method for mapping the upper critical field is realized. Direct comparison with thermodynamic measurements such as magnetization and thermal conductivity show compelling agreement. C1 Los Alamos Natl Lab, NHMFL, MST, Los Alamos, NM 87545 USA. RP Mielke, CH (reprint author), Los Alamos Natl Lab, NHMFL, MST, MS-E536, Los Alamos, NM 87545 USA. NR 8 TC 0 Z9 0 U1 1 U2 2 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3203 EP 3206 DI 10.1142/S021797920201395X PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100077 ER PT J AU Sandu, V Cimpoiasu, E Almasan, CC Paulikas, AP Veal, BW AF Sandu, V Cimpoiasu, E Almasan, CC Paulikas, AP Veal, BW TI Interplay between spin and crystal lattices in antiferromagnetic YBa2Cu3O6.25 SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO AB In-plane rho(ab) and out-of-plane p(c) resistivity measurements were performed on the same antiferromagnetic YBa2Cu3O6.25 single crystal over a wide range of temperatures T. rho(ab)(T) exhibits two crossovers with decreasing T: a crossover from metallic to weak localization behavior at 175 K and a second crossover to two-dimensional chiral variable-range hopping VRH behavior at 115 K. The latter reflects the topologic excitations induced in the spin system. rho(c)(T) displays an exp(-T-2/T-c,h(2)) dependence at high T and a VRH type dependence below 115 K. The T derivative of rho(c)(T) shows a kink at 32.65 K which we attribute to the antiferromagnetic ordering of the Cu( 1) spins. C1 Kent State Univ, Dept Phys, Kent, OH 44242 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Natl Inst Mat Phys, Bucharest, Romania. RP Sandu, V (reprint author), Kent State Univ, Dept Phys, Kent, OH 44242 USA. RI Sandu, Viorel/B-8660-2011 NR 10 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3208 EP 3211 DI 10.1142/S0217979202013973 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100079 ER PT J AU Schmiedeshoff, GM Touton, S Beyermann, WP Lacerda, AH Bud'ko, SL Canfield, PC AF Schmiedeshoff, GM Touton, S Beyermann, WP Lacerda, AH Bud'ko, SL Canfield, PC TI Magnetotransport and the magnetic phase diagram of superconducting ErNi2B2C SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Fields CY OCT 19-25, 2001 CL SANTA FE, NM AB We report magnetotransport measurements made on the anisotropic magnetic superconductor ErNi2B2C. We observe a minimum in the magnetoresistance with fields along the a-axis, a behavior consistent with the high field quenching of magnetic scattering. When the field is applied along the c-axis the magnetoresistance is positive. The temperature of the antiferromagnetic phase transition is depressed by magnetic fields applied along the c-axis (as it is along the a-axis) and is suppressed near 17 T. A feature in the first derivative of the temperature dependent resistivity may be related to the weak ferromagnetic phase. We find the temperature at which this feature occurs to be independent of magnetic fields to 18 T. C1 Occidental Coll, Dept Phys, Los Angeles, CA 90041 USA. Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA. Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys, Ames, IA 50011 USA. RP Occidental Coll, Dept Phys, Los Angeles, CA 90041 USA. EM gms@oxy.edu RI Canfield, Paul/H-2698-2014 NR 4 TC 2 Z9 2 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-9792 EI 1793-6578 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3212 EP 3215 DI 10.1142/S0217979202013985 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100080 ER PT J AU Bao, W Aeppli, G Christianson, AD Fisk, Z Hundley, MF Lacerda, AH Lynn, JW Pagliuso, PG Sarrao, JL Thompson, JD AF Bao, W Aeppli, G Christianson, AD Fisk, Z Hundley, MF Lacerda, AH Lynn, JW Pagliuso, PG Sarrao, JL Thompson, JD TI Magnetic properties of heavy fermion superconductors CeRhIn5 and Ce2RhIn8 SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Fields CY OCT 19-25, 2001 CL SANTA FE, NM ID CEIN3 AB Some recent neutron scattering works on CeRhIn5 and Ce2RhIn8, together with related resistivity and specific heat measurements, are summarized. In spite of its layered crystal structure, CeRhIn5 is shown to be 3 dimensional both magnetically and in transport. We also find that the Fisher-Langer behavior is closely followed in CeRhIn5. This may circumvent the Kondo lattice model and support applying established Fermi-liquid superconductivity theory to heavy fermion superconductors. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NEC Res, Princeton, NJ 08540 USA. Florida State Univ, Tallahassee, FL 32306 USA. Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. RP Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Pagliuso, Pascoal/C-9169-2012; Bao, Wei/E-9988-2011; christianson, andrew/A-3277-2016 OI Bao, Wei/0000-0002-2105-461X; christianson, andrew/0000-0003-3369-5884 NR 22 TC 1 Z9 1 U1 0 U2 7 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-9792 EI 1793-6578 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3244 EP 3249 DI 10.1142/S0217979202014073 PG 6 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100089 ER PT J AU Ramirez, AP AF Ramirez, AP TI Geometrical frustration, and relevance for high field studies SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Ramirez, AP (reprint author), Los Alamos Natl Lab, MST-10,MS K764, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 1 U2 5 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3280 EP 3280 DI 10.1142/S0217979202014176 PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100099 ER PT J AU Ahn, KH Millis, AJ AF Ahn, KH Millis, AJ TI Effects of in-plane strain on magnetism in LaMnO3 thin films SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID MAGNETORESISTANCE; ANISOTROPY; DEPENDENCE AB The effects of the in-plane strain oil the magnetic properties of LaMnO3 thin films are calculated using an elastic energy expression and a tight binding Hamiltonian with electron-lattice coupling. Tensile uniaxial strain of the order of 2%, which is the order of the magnitude of those induced in thin films by lattice mismatch,with substrates, is found to change the magnetic ground state from A-type antiferromagnetic state to purely antiferromagnetic state. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Rutgers State Univ, Dept Phys & Astron, Ctr Mat Theory, Piscataway, NJ 08854 USA. RP Ahn, KH (reprint author), Los Alamos Natl Lab, Div Theoret, T-11, Los Alamos, NM 87545 USA. NR 9 TC 3 Z9 3 U1 1 U2 8 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3281 EP 3284 DI 10.1142/S0217979202014188 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100100 ER PT J AU Gor'kov, LP Kresin, VZ AF Gor'kov, LP Kresin, VZ TI Large effects of magnetic field on Josephson currents through antiferromagnetic barriers SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Florida State Univ, NHMFL Tallahassee, Tallahassee, FL 32310 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Gor'kov, LP (reprint author), Florida State Univ, NHMFL Tallahassee, Tallahassee, FL 32310 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3316 EP 3316 DI 10.1142/S0217979202014280 PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100110 ER PT J AU Honda, F Sechovsky, V Mikulina, O Kamarad, J Alsmadi, AM Nakotte, H Lacerda, AH AF Honda, F Sechovsky, V Mikulina, O Kamarad, J Alsmadi, AM Nakotte, H Lacerda, AH TI High pressure apparatus for transport properties study in high magnetic field SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO AB We have designed a high pressure apparatus for measuring electrical-transport properties at low temperatures, high magnetic field and hydrostatic pressure up to 10 kbar. Details of the higli-pressure cell and an exemplary study on UNiAl are described and discussed briefly. C1 Charles Univ, Dept Elect Struct, Prague 12116 2, Czech Republic. Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic. New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA. LANL, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. RP Honda, F (reprint author), Charles Univ, Dept Elect Struct, Prague 12116 2, Czech Republic. RI Kamarad, Jiri/G-5880-2014; HONDA, Fuminori/D-5578-2015; Sechovsky, Vladimir/A-5256-2008 OI Kamarad, Jiri/0000-0003-3502-9930; HONDA, Fuminori/0000-0002-9485-7384; Sechovsky, Vladimir/0000-0003-1298-2120 NR 4 TC 3 Z9 3 U1 0 U2 4 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3330 EP 3333 DI 10.1142/S0217979202014334 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100115 ER PT J AU Watts, SM Von Molnar, S Jaime, M AF Watts, SM Von Molnar, S Jaime, M TI High-field Hall effect and band structure of half-metallic CrO2 films SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO ID CHROMIUM DIOXIDE; THIN-FILMS; MAGNETOTRANSPORT; FERROMAGNET AB The Hall effect of (100)- and (110)-oriented Films of the half-metallic ferromagnetic oxide CrO2 fabricated by both chemical vapor deposition and high pressure, thermal decomposition methods, has been examined in large magnetic fields up to 60 T. In all cases the Hall effect exhibits a sign reversal from positive to negative with increasing field, which we take as evidence for multi-band behavior. (I 10) films fabricated by both methods exhibit this sign reversal at relatively low fields. The data may be fit with a simple two-band model, which indicates the existence of highly mobile holes of p-like parentage, along with a much larger number of heavy, d-like electrons. In the (100) film the sign reversal is at much higher field. The parameters obtained from the fits allow us (with help from band structure calculations) to infer the band structure near the Fermi level and how it depends on sample strain and other structural characteristics. These details will be important for understanding carrier transport through interfaces such as for spin injection or other "spintronics" applications. C1 Florida State Univ, MARTECH, Tallahassee, FL 32306 USA. Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. RP Watts, SM (reprint author), Florida State Univ, MARTECH, Tallahassee, FL 32306 USA. RI Jaime, Marcelo/F-3791-2015 OI Jaime, Marcelo/0000-0001-5360-5220 NR 7 TC 1 Z9 1 U1 0 U2 3 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3334 EP 3337 DI 10.1142/S0217979202014346 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100116 ER PT J AU Mihut, I Agosta, CC Mielke, CH Tokomoto, M AF Mihut, I Agosta, CC Mielke, CH Tokomoto, M TI The study of the magnetic breakdown effect as a function of angle in the organic conductor k- (BEDT-TTF)(2)Cu(NCS)(2) in high magnetic fields SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO AB The magnetic breakdown effect can be seen by the growth of new frequencies in the quantum oscillations in clean metals as a function of magnetic field. We have studied the variation Of the amplitudes in the quantum Oscillations in the resistance (the Shubnikov-de Haas effect) as a function of an.-le in the quasi-two, dimensional-organic conductor kappa-(BEDT-TTF)(2)Cu(NCS)(2). The measurements were made by means of a radio frequency (rf) tank circuit (similar to50 MHz) at very high magnetic fields(50T-60T) and low temperature(500 mK). The geometry of the rf excitation we used excited in-plane currents, and therefore we measured the in-plane resistivity. In contrast to conventional transport measurements that measure the inter-plane resistivity, the in-plane resistivity is dominated by the magnetic breakdown frequencies. As a result we measured much higher breakdown frequency amplitudes than conventional transport experiments. As is expected, the angular dependence of the Shubnikov-de Haas frequencies have a 1/costheta behavior. This is due to the change of the cross sectional area of the tubular Fermi surface as the angle with respect to the magnetic field is changed. The amplitude of the oscillations changes due to the spin splitting factor which takes into account the ratio between the spin splitting and the energy spacing of the Landau levels which also has 1/costheta behavior. We show that our data agree with the semi-classical theory (Lifshitz-Kosevich formula). C1 Clark Univ, Dept Phys, Worcester, MA 01610 USA. Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Electrotech Lab, Tsukuba, Ibaraki 305, Japan. RP Mihut, I (reprint author), Clark Univ, Dept Phys, Worcester, MA 01610 USA. RI Stroe, Izabela/B-3790-2010 NR 5 TC 0 Z9 0 U1 1 U2 5 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3355 EP 3359 DI 10.1142/S0217979202014401 PG 5 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100122 ER PT J AU Hammel, PC AF Hammel, PC TI Force-detected scanned probe magnetic resonance microscopy SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hammel, PC (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RI Hammel, P Chris/O-4845-2014 OI Hammel, P Chris/0000-0002-4138-4798 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3378 EP 3378 DI 10.1142/S0217979202014474 PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100129 ER PT J AU Crooker, SA Taylor, AJ AF Crooker, SA Taylor, AJ TI Ultrafast coherent Terahertz spectroscopy in high magnetic fields SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO AB With an aim towards measuring the high-frequency complex conductivity Of Correlated electron materials in the regime of low temperatures and hi.-h magnetic fields, we introduce a method for performing time-domain terahertz spectroscopy directly in the cryogenic bore of existing dc and pulsed-field magnets. Miniature, fiber-coupled THz en-Litters and receivers are constructed and are demonstrated to work down to 5 K and tip to 6 Tesla, for eventual use in higher-field magnets. Maintaining the sub-micron alignment between fiber and antenna during thermal cycling, and obtaining ultrafast (<200fs) optical gating pulses at the end of long optical fibers constitute the major technical challenges of this project. Preliminary data on YBCO superconducting thin films is shown. C1 NHMFL, Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Crooker, SA (reprint author), NHMFL, Los Alamos Natl Lab, MS E536, Los Alamos, NM 87545 USA. NR 2 TC 0 Z9 0 U1 1 U2 3 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3385 EP 3388 DI 10.1142/S0217979202014498 PG 4 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100131 ER PT J AU Migliori, A Balakirev, FF Betts, JB Boebinger, GS Mielke, CH Rickel, D AF Migliori, A Balakirev, FF Betts, JB Boebinger, GS Mielke, CH Rickel, D TI Development of advanced instrumentation for static and pulsed fields SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article; Proceedings Paper CT 4th Conference on Physical Phenomena at High Magnetic Filds CY OCT 19-25, 2001 CL SANTA FE, NEW MEXICO C1 Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. RP Migliori, A (reprint author), Los Alamos Natl Lab, NHMFL, MS E536, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 2002 VL 16 IS 20-22 BP 3398 EP 3398 DI 10.1142/S0217979202014553 PG 1 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA 598WU UT WOS:000178300100137 ER PT J AU An, XL Lecomte, MC Chasis, JA Mohandas, N Gratzer, W AF An, XL Lecomte, MC Chasis, JA Mohandas, N Gratzer, W TI Shear-response of the spectrin dimer-tetramer equilibrium in the red blood cell membrane SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID SELF-ASSOCIATION; ERYTHROCYTE SPECTRIN; HEREDITARY ELLIPTOCYTOSIS; MOLECULAR-STRUCTURE; SKELETON; MUTANT AB The red cell membrane derives its elasticity and resistance to mechanical stresses from the membrane skeleton, a network composed of spectrin tetramers. These are formed by the head-to-head association of pairs of heterodimers attached at their ends to junctional complexes of several proteins. Here we examine the dynamics of the spectrin dimer-dimer association in the intact membrane. We show that univalent fragments of spectrin, containing the dimer self-association site, will bind to spectrin on the membrane and thereby disrupt the continuity of the protein network. This results in impairment of the mechanical stability of the membrane. When, moreover, the cells are subjected to a continuous low level of shear, even at room temperature, the incorporation of the fragments and the consequent destabilization of the membrane are greatly accentuated. It follows that a modest shearing force, well below that experienced by the red cell in the circulation, is sufficient to sever dimer-dimer links in the network. Our results imply 1) that the membrane accommodates the enormous distortions imposed on it during the passage of the cell through the microvasculature by means of local dissociation of spectrin tetramers to dimers, 2) that the network in situ is in a dynamic state and undergoes a "breathing" action of tetramer dissociation and re-formation. C1 New York Blood Ctr, Red Cell Physiol Lab, New York, NY 10021 USA. Fac Med Bichat, INSERM U409, F-75870 Paris 18, France. Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA. Kings Coll London, Randall Ctr, Med Council Cell Biophys Unit, London SE1 1UL, England. RP An, XL (reprint author), New York Blood Ctr, Red Cell Physiol Lab, 310 E 67th St, New York, NY 10021 USA. EM xiuli_an@nybc.org FU NIDDK NIH HHS [DK 26263, DK 32094] NR 30 TC 61 Z9 62 U1 0 U2 7 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 AUG 30 PY 2002 VL 277 IS 35 BP 31796 EP 31800 DI 10.1074/jbc.M204567200 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 588UB UT WOS:000177718700062 PM 12105217 ER PT J AU Wiens, RC Arvidson, RE Cremers, DA Ferris, MJ Blacic, JD Seelos, FP Deal, KS AF Wiens, RC Arvidson, RE Cremers, DA Ferris, MJ Blacic, JD Seelos, FP Deal, KS TI Combined remote mineralogical and elemental identification from rovers: Field and laboratory tests using reflectance and laser-induced breakdown spectroscopy SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article DE laser-induced breakdown spectroscopy (LIBS); Mars chemistry; major elements; rover; spectroscopy; VIS-IR; LIBS ID MARS AB [1] Rover mast-based stereo imaging, reflectance or emission spectra, and laser-induced breakdown spectroscopy (LIBS) provide powerful synergistic data sets for rapidly determining geologic setting, mineralogy, and elemental composition for rock and soil targets. We report results from hand specimen examination, multiple spectral reflectance (VISIR, 0.4-2.5 mum), and remote LIBS measurements for representative samples (basalt, iron oxides, altered rhyolite, and dolostone) collected during the May 2000 rover trials at Black Rock Summit, Nevada. Major findings are (1) reflectance data indicate the presence of olivine and mommorillonite for the basaltic sample, whereas LIBS data show variations with depth as an alumino-silicate coating is ablated and a basaltic composition is revealed beneath; (2) iron oxide reflectance data are dominated by goethite and hematite with the additional detection of hydrated cryptocrystalline SiO2 (an interpretation fully supported by the LIBS data); (3) VISIR reflectance data for rhyolite show significant alteration to kaolinite, an inference that would be difficult to make from LIBS data alone; (4) dolostone reflectance data show dominantly dolomite with minor iron oxides, inferences confirmed through analyses of LIBS data; and (5) LIBS data acquired for samples as a function of depth and spatial location significantly aid in understanding the extent of sample coatings and compositional and mineralogical diversity. Given the hand specimen examination and results from joint analysis of the two rapid-acquisition spectral techniques, a scenario for acquisition and analysis of mast-based imaging reflectance or emission spectroscopy and LIBS is presented within the context of the scientific objectives for the Mars Exploration Program. C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. Washington Univ, Dept Earth & Planetary Sci, McDonnell Ctr Space Sci, St Louis, MO 63130 USA. RP Wiens, RC (reprint author), Los Alamos Natl Lab, Div Chem, NIS-1,MS D-466, Los Alamos, NM 87545 USA. RI Seelos, Frank/C-7875-2016 OI Seelos, Frank/0000-0001-9721-941X NR 23 TC 20 Z9 20 U1 3 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD AUG 30 PY 2002 VL 107 IS E11 AR 8004 DI 10.1029/2000JE001439 PG 14 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 623LL UT WOS:000179704300003 ER PT J AU Silin, DB Tsang, CF AF Silin, DB Tsang, CF TI Estimation of formation hydraulic properties accounting for pre-test injection or production operations SO JOURNAL OF HYDROLOGY LA English DT Article DE hydraulic conductivity; pumping test; parameters estimation; radial transient flow equation; skin effect AB We propose to use regular monitoring data from a production or injection well for estimating the formation properties around the wellbore without interrupting the operations. Thus, instead of shutting-in the well for a substantial time period, we propose to select a portion of the pumping data over a certain time interval and then derive our conclusions from these data. A distinctive feature of our analysis is that we introduce an auxiliary parameter to account for the possible after-effects of pumping that preceded the test interval and, consequently, the non-uniform initial pressure conditions. We demonstrate that those effects influence not only the analysis of regular operations data, but also the analysis of a traditional pressure drawdown or pressure buildup test with a prior shut-in period. We show that phenomena usually attributed to wellbore storage or skin effects can be at least partially interpreted through the parameter we introduce. Unlike some traditional methods, our analysis utilizes almost the entire test time period for curve-fitting. It turns out that it produces good data matching even if the test period is short and the frequency of measurements is low. Another distinctive feature of the present approach is that the parameter estimation problem is reduced to a combination of quadratic criterion minimization and a search for the minimum of a one-variable function. Because we can obtain the solution to the quadratic problem analytically, we significantly simplify the problem and dramatically reduce the amount of computations required. (C) 2002 Published by Elsevier Science B.V. C1 Univ Calif Berkeley, Div Earth Sci, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Tsang, CF (reprint author), Univ Calif Berkeley, Div Earth Sci, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,MS90-1116, Berkeley, CA 94720 USA. NR 20 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-1694 J9 J HYDROL JI J. Hydrol. PD AUG 30 PY 2002 VL 265 IS 1-4 BP 1 EP 14 AR PII S0022-1694(02)00050-1 DI 10.1016/S0022-1694(02)00050-1 PG 14 WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources SC Engineering; Geology; Water Resources GA 594VB UT WOS:000178071000001 ER PT J AU Safonova, M Torres, DF AF Safonova, M Torres, DF TI Degeneracy in exotic gravitational lensing SO MODERN PHYSICS LETTERS A LA English DT Article DE general relativity; gravitational lensing; scalar fields; wormholes; cosmology; closed universes ID WEAK ENERGY CONDITION; BOSON STARS; DARK-MATTER; WORMHOLES; FIELD; COSMOLOGY; GALAXIES; REDSHIFT AB We present three different theoretically foreseen, but unusual, astrophysical situations where the gravitational lens equation ends up being the same, thus producing a degeneracy problem. These situations are: (a) the case of gravitational lensing by exotic stresses (matter violating the weak energy condition and thus having a negative mass, particular cases of wormhole solutions can be used as an example), (b) scalar field gravitational lensing (i.e. when considering the appearance of a scalar charge in the lensing scenario), and (c) gravitational lensing in closed universes (with antipodes). The reasons that lead to this degeneracy in the lens equations, the possibility of actually encountering it in the real universe, and eventually the ways to break it, are discussed. C1 Univ Delhi, Dept Phys & Astrophys, New Delhi 7, India. Princeton Univ, Dept Phys, Princeton, NJ 08544 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Safonova, M (reprint author), Univ Delhi, Dept Phys & Astrophys, New Delhi 7, India. RI Torres, Diego/O-9422-2016 OI Torres, Diego/0000-0002-1522-9065 NR 42 TC 10 Z9 10 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0217-7323 J9 MOD PHYS LETT A JI Mod. Phys. Lett. A PD AUG 30 PY 2002 VL 17 IS 26 BP 1685 EP 1692 DI 10.1142/S0217732302008083 PG 8 WC Physics, Nuclear; Physics, Particles & Fields; Physics, Mathematical SC Physics GA 597AZ UT WOS:000178201000001 ER PT J AU Brown, K Shields, S Cosman, M Turteltaub, KW AF Brown, K Shields, S Cosman, M Turteltaub, KW TI Structural characterization of oligonucleotide adducts formed by the food mutagen PhIP SO TOXICOLOGY LA English DT Meeting Abstract C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0300-483X J9 TOXICOLOGY JI Toxicology PD AUG 30 PY 2002 VL 178 IS 1 SI SI BP 30 EP 31 PG 2 WC Pharmacology & Pharmacy; Toxicology SC Pharmacology & Pharmacy; Toxicology GA 585GU UT WOS:000177517700029 ER PT J AU Xu, J Durbin, PW Kullgren, B Ebbe, SN Uhlir, LC Raymond, KN AF Xu, J Durbin, PW Kullgren, B Ebbe, SN Uhlir, LC Raymond, KN TI Synthesis and initial evaluation for in vivo chelation of Pu(IV) of a mixed octadentate spermine-based ligand containing 4-carbamoyl-3-hydroxy-1-methyl-2(1H)-pyridinone and 6-carbamoyl-1-hydroxy-2(1H)-pyridinone SO JOURNAL OF MEDICINAL CHEMISTRY LA English DT Article ID SEQUESTERING AGENTS; HYDROXYPYRIDINONATE LIGANDS; IN-VIVO; ACTINIDES; CATECHOLATE; MICE; COMPLEXES; TOXICITY; PU-238; DECORPORATION AB An improved synthesis for a series of 1-hydroxy-2(1H)-pyridinone-based octadentate ligands is reported. The mixed chelate, octadentate ligand, 3,4,3-LI(1,2-Me-3,2-HOPO), was designed, synthesized, and tested for in vivo chelation of Pu in a mouse model. This ligand incorporates both 1,2-HOPO and Me-3,2-HOPO metal chelating units; the latter has higher affinity toward actinide ions than does 1,2-HOPO at physiological pH. Injected or administered orally to fasted or normally fed mice at the standard clinical dose 30 mumol/kg, both 3,4,3-LI(1,2-HOPO) and 3,4,3- LI(1,2-Me-3,2-HOPO) remove significantly more Pu than injected CaNa(3)DTPA. Injected doses of 0.1 mumol/kg of these HOPO ligands are as effective as 30 mumol/kg of injected CaNa(3)DTPA. Ten daily injections of 30 mumol/kg of a HOPO ligand did not induce detectable acute toxicity in mice. The mixed HOPO ligand is somewhat more effective than 3,4,3-LI(1,2-HOPO) when given orally, and the enhanced reduction of liver Pu by the mixed ligand is statistically significant. Thus, both octadentate HOPO ligands meet the criterion of low toxicity at doses that are more effective than the standard dose of CaNa(3)DTPA. Their improved effectiveness at low dose along with great oral activity (despite low gastrointestinal absorption) implies that new treatment regimens can be developed using the HOPO ligands alone or as adjuncts to CaNa(3)DTPA,therapy, which will greatly exceed the amount of Pu excretion that is achievable with CaNa(3)DTPA alone. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Glenn T Seaborg Ctr, Berkeley, CA 94720 USA. RP Raymond, KN (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Dept Chem, Berkeley, CA 94720 USA. FU NIEHS NIH HHS [ES-02698] NR 40 TC 40 Z9 42 U1 2 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-2623 J9 J MED CHEM JI J. Med. Chem. PD AUG 29 PY 2002 VL 45 IS 18 BP 3963 EP 3971 AR UNSP JM010564T DI 10.1021/jm010564t PG 9 WC Chemistry, Medicinal SC Pharmacology & Pharmacy GA 587RZ UT WOS:000177657600017 PM 12190318 ER PT J AU Jackson, GP King, FL Goeringer, DE Duckworth, DC AF Jackson, GP King, FL Goeringer, DE Duckworth, DC TI Gas-phase reactions of U+ and U2+ with O-2 and H2O in a quadrupole ion trap SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID COLLISION-INDUCED DISSOCIATION; TANDEM MASS-SPECTROMETRY; MOLECULE REACTIONS; BASICITIES; CHEMISTRY; DYNAMICS; CLOUDS AB Reaction pathways and rate constants of gas-phase uranium and uranium oxide ions with O-2 and H2O have been investigated using a quadrupole ion trap mass spectrometer (QIT-MS). A new reaction pathway is identified for the reaction between U2+ and H2O, which leads to the formation of UO+ via the intermediate UOH2+. Reaction rate constants are determined for several reactions by measuring the reaction rate at different partial pressures of the reagent gas and are found to be in reasonable agreement with the literature. These rate constants include the first known measurement for the reaction of U2+ with H2O (similar to0.4 k(ADO)). New limits on thermochemical values are also provided for certain species. These include DeltaH(f) (UO2+) less than or equal to 1742 kJ mol(-1) and 1614 less than or equal to DeltaHf (UOH2+) less than or equal to 1.818 kJ mol(-1) and are based on the assumption that only exothermic or thermoneutral reactions are possible under the conditions used. This assumption is supported by simulations of the root-mean-square (RMS) ion kinetic energy of stored uranium ions in the QIT. Only a slight increase in the RMS ion kinetic energies, from 0.1 to 0.2 eV, is predicted over the range of trapping conditions studied (0.05 less than or equal to q(z) less than or equal to 0.75) corresponding to a theoretical reaction temperature of similar to384 K. The simulations also compare helium and neon as bath gases and show that the RMS kinetic energies are found to be very similar at long trapping times (>20 ms), although neon establishes steady state conditions in approximately half the time. C1 W Virginia Univ, Dept Chem, Morgantown, WV 26506 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Duckworth, DC (reprint author), W Virginia Univ, Dept Chem, Morgantown, WV 26506 USA. RI Jackson, Glen/D-3518-2014; Duckworth, Douglas/B-7171-2015 OI Jackson, Glen/0000-0003-0803-6254; Duckworth, Douglas/0000-0002-8161-5685 NR 35 TC 41 Z9 41 U1 0 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 29 PY 2002 VL 106 IS 34 BP 7788 EP 7794 DI 10.1021/jp0259420 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 588MJ UT WOS:000177705000021 ER PT J AU Claude, JP Omberg, KM Williams, DS Meyer, TJ AF Claude, JP Omberg, KM Williams, DS Meyer, TJ TI Calculation of electron transfer rate constants from emission spectra in Re(I) chromophore-quencher complexes SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID ENERGY-GAP LAW; TRANSFER EXCITED-STATES; CHARGE-TRANSFER; RESONANCE RAMAN; INTRAMOLECULAR ELECTRON; INVERTED REGION; ARTIFICIAL PHOTOSYNTHESIS; POLYPYRIDYL COMPLEXES; METAL-COMPLEXES; ACCEPTOR AB The photophysical properties of the chromophore-quencher complexes, fac-[(4,4'-R(2)bpy)Re-1(CO)(3)(LA)](n+) (4,4'-R(2)bpy = 4,4'-R-2-2,2'-bipyridine, R = Me or 'Bu, and LA = the quinone acceptor ligands, benz[g]-isoquinoline-5,10-dione (BIQD), 2-oxy-1,4-naphthoquinone anion (ONQ(-)), 1/2 2,6-dihydroxyanthraquinone dianion (AFA(2-)), or the pyridinium acceptor, 1-methyl-6-oxyquinoline (OQD)) in 1,2-dichloroethane are described. Following Re-1 --> 4,4'-R(2)bpy metal-to-ligand charge transfer (MLCT) excitation, intramolecular electron transfer leads to the transients, fac-[(4,4'-R(2)bpy)Re-II(CO)(3)(LA(.-))](n+). They have been characterized by emission spectral fitting and transient absorption measurements and, for LA = OQD, by transient infrared measurements. As shown by analysis of excited-state emission, there is weak-to-moderate electronic coupling between the electron donor and acceptor sites in the transients with H-DA varying from 153 cm(-1) for the BIQD complex to 3.9 cm(-1) for the OQD complex. The transients are redox-separated (RS) states with the electronic configurations dpi(5)pi(LA)(*1) for BIQD or sigma(Re-O)(1)piLA(*1) for ONQ(-), AFA(2-), and OQD. They are weak emitters and return to the ground state largely by nonradiative decay which occurs by back electron transfer (k(ET)). Reasonable agreement has been reached between k(ET) and values calculated from kinetic parameters derived by emission spectral fitting and excited-state decay. The RS states for the AFA2- and OQD complexes are remarkably long-lived (tau = 4 mus for LA = AFA(2-) in DCE at 296 K and 16 mus for LA = OQD in DCE at 296 K) due to orbital and spin restrictions on back electron transfer. C1 Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA. Los Alamos Natl Lab, Off Associate Director Strateg Res, Los Alamos, NM 87545 USA. RP Meyer, TJ (reprint author), Univ N Carolina, Dept Chem, CB 3290, Chapel Hill, NC 27599 USA. RI Omberg, Kristin/I-5972-2013 NR 86 TC 29 Z9 29 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 29 PY 2002 VL 106 IS 34 BP 7795 EP 7806 DI 10.1021/jp021216l PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 588MJ UT WOS:000177705000022 ER PT J AU Yezdimer, EM Cummings, PT Chialvo, AA AF Yezdimer, EM Cummings, PT Chialvo, AA TI Determination of the Gibbs free energy of gas replacement in SI clathrate hydrates by molecular simulation SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID CARBON-DIOXIDE; NATURAL-GAS; CO2 STORAGE; DEEP-OCEAN; METHANE; SEQUESTRATION; EXPLOITATION; DISSOLUTION; MECHANISMS; RESOURCE AB The thermodynamic feasibility of extracting CH4 gas from its hydrate clathrate by CO2 replacement is analyzed by molecular dynamics simulation. The approach to this investigation is the proof-of-principles and the development of the molecular tools to study the replacement equilibrium process. The effect of the water (model) description on the free energy of the replacement process is discussed and some relevant implications regarding the real process are addressed. C1 Oak Ridge Natl Lab, Div Chem Sci, High Temp Aqueous Chem Grp, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Univ Tennessee, Dept Chem Engn Chem & Comp Sci, Knoxville, TN 37996 USA. Univ Tennessee, Dept Chem Engn, Knoxville, TN 37996 USA. RP Chialvo, AA (reprint author), Oak Ridge Natl Lab, Div Chem Sci, High Temp Aqueous Chem Grp, Oak Ridge, TN 37831 USA. RI Cummings, Peter/B-8762-2013; OI Cummings, Peter/0000-0002-9766-2216; Chialvo, Ariel/0000-0002-6091-4563 NR 30 TC 51 Z9 54 U1 4 U2 23 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 29 PY 2002 VL 106 IS 34 BP 7982 EP 7987 DI 10.1021/jp020795r PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 588MJ UT WOS:000177705000044 ER PT J AU Svensson, B Tiede, DM Barry, BA AF Svensson, B Tiede, DM Barry, BA TI Small-angle X-ray scattering studies of the manganese stabilizing subunit in photosystem II SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Letter ID CONFORMATIONAL-CHANGES; MOLTEN GLOBULE; CYTOCHROME-C; PROTEIN; BINDING; STATES; SITE AB Small-angle X-ray scattering studies (SAXS) were used to determine the size, shape, and oligomeric composition of the manganese stabilizing protein (MSP) of photosystem II. This extrinsic protein subunit plays an important role in photosynthetic oxygen evolution. As its name implies, MSP stabilizes the tetranuclear Mn cluster of the water oxidation complex. Removal of MSP lowers activity and decreases the stability of active-site manganese. Reconstitution of MSP reverses these effects. In this study, MSP was extracted from spinach PSII membranes using CaCl2 or urea. Through the use of MALDI-TOF mass spectrometry, the molecular weight of MSP was determined to be 26.53 kDa. X-ray scattering results show that both samples display a monodisperse scattering pattern; this pattern is consistent with a homogeneous protein solution. The CaCl2 extracted and urea extracted MSP samples have radii of gyration of 25.9+/-0.4 and 27.0+/-0.01 Angstrom, respectively. MSP is shown to be monomeric in solution. This was determined using a cytochrome c standard and the scattering intensity, extrapolated to zero scattering angle, which is proportional to the molecular weight. This SAXS study suggests that, in solution, MSP is a monomeric, elongated prolate ellipsoid with dimensions, 112 x 23 x 23 Angstrom(3) and an axial ratio of 4.8. C1 Univ Minnesota, Dept Biochem Biophys & Mol Biol, St Paul, MN 55108 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Barry, BA (reprint author), Univ Minnesota, Dept Biochem Biophys & Mol Biol, 1479 Gortner Ave, St Paul, MN 55108 USA. NR 27 TC 17 Z9 18 U1 0 U2 5 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 AUG 29 PY 2002 VL 106 IS 34 BP 8485 EP 8488 DI 10.1021/jp0258199 PG 4 WC Chemistry, Physical SC Chemistry GA 588ML UT WOS:000177705200001 ER PT J AU Chen, LX Liu, T Thurnauer, MC Csencsits, R Rajh, T AF Chen, LX Liu, T Thurnauer, MC Csencsits, R Rajh, T TI Fe2O3 nanoparticle structures investigated by X-ray absorption near-edge structure, surface modifications, and model calculations SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID HEMATITE ALPHA-FE2O3; TIO2 NANOPARTICLES; OPTICAL-PROPERTIES; CHARGE SEPARATION; K EDGE; SPECTROSCOPY; SOL AB The structures of Fe2O3 nanoparticles with different sizes were investigated using Fe K-edge X-ray absorption near-edge structure (XANES) and the FEFF calculations, as well as surface modification with enediol ligands. The studies not only revealed the existence of under-coordinated Fe sites in the nanoparticles but also confirmed that these under-coordinated sites were located on the surface. Upon binding of enediol ligands, surface sites were restructured to octahedral sites. In particular, the nature of the surface defects and their correlation with the unique properties of the nanoparticles were discussed. Model calculations were conducted for FemOn (m greater than or equal to 1, n greater than or equal to 4) clusters of various sizes centered at Fe sites with octahedral (O-h), distorted octahedral (C-3v) and tetrahedral (T-d) coordination geometry using FEFF8.10 programs. The main features of the calculated spectra agree with the experimental results and were correlated to the density of states, the Fe coordination geometry, and the long-range order of the lattice. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Chen, LX (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 35 TC 179 Z9 182 U1 5 U2 86 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 AUG 29 PY 2002 VL 106 IS 34 BP 8539 EP 8546 DI 10.1021/jp025544x PG 8 WC Chemistry, Physical SC Chemistry GA 588ML UT WOS:000177705200009 ER PT J AU Miyabe, K Guiochon, G AF Miyabe, K Guiochon, G TI The moment equations of chromatography for monolithic stationary phases SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID RIGID POLYMER MONOLITHS; PERFORMANCE LIQUID-CHROMATOGRAPHY; SIZE-EXCLUSION CHROMATOGRAPHY; NUCLEAR-MAGNETIC-RESONANCE; POROUS SILICA COLUMNS; SOL-GEL SYSTEM; SURFACE-DIFFUSION; SEPARATION MEDIA; CAPILLARY ELECTROCHROMATOGRAPHY; DISPERSION COEFFICIENTS AB The solution in the Laplace domain of the system of equations of the general kinetic model of chromatography provides equations relating the first absolute moment and the second central moment of elution bands to the characteristics of the retention equilibrium and the mass transfer kinetics, respectively. For continuous porous rod (i.e., monolithic) columns, these moment equations have the same form as those for conventional columns packed with. spherical particles of a suitable packing material. However, some of the coefficients in the equation of the second central moment are different for conventional and monolithic columns. The results of the calculations made with the moment equations derived here for monolithic columns agree well with some typical characteristics of the experimental behavior observed for monolithic columns, showing the validity of these new moment equations. They should be useful for a detailed analysis of the retention equilibrium and of the mass transfer kinetics in monolithic-type columns. These moment equations are also applicable to the study of the adsorption characteristics of cylindrical adsorbents, such as activated carbon fibers. C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Toyama Univ, Fac Educ, Gofu Ku, Toyama 9308555, Japan. Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. RP Guiochon, G (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. NR 59 TC 68 Z9 68 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 AUG 29 PY 2002 VL 106 IS 34 BP 8898 EP 8909 DI 10.1021/jp020555b PG 12 WC Chemistry, Physical SC Chemistry GA 588ML UT WOS:000177705200054 ER PT J AU Chornet, E Czernik, S AF Chornet, E Czernik, S TI Renewable fuels - Harnessing hydrogen SO NATURE LA English DT Editorial Material C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Univ Sherbrooke, Dept Chem Engn, Quebec City, PQ J1L 1H3, Canada. RP Chornet, E (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 10 TC 44 Z9 47 U1 1 U2 13 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD AUG 29 PY 2002 VL 418 IS 6901 BP 928 EP 929 DI 10.1038/418928a PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 588AP UT WOS:000177677500028 PM 12198532 ER PT J AU Fast, JD Zaveri, RA Bian, XD Chapman, EG Easter, RC AF Fast, JD Zaveri, RA Bian, XD Chapman, EG Easter, RC TI Effect of regional-scale transport on oxidants in the vicinity of Philadelphia during the 1999 NE-OPS field campaign SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article DE boundary layer; regional-scale transport; mesoscale meteorological model; chemical transport model ID EASTERN UNITED-STATES; BOUNDARY-LAYER; OZONE CONCENTRATION; CLOSURE-MODEL; URBAN; CHEMISTRY; DEPOSITION; ATMOSPHERE; TURBULENCE; EVOLUTION AB A new meteorological-chemical model is used to determine the relative contribution of regional-scale transport and local photochemical production on air quality over Philadelphia. The model performance is evaluated using surface and airborne meteorological and chemical measurements made during a 30-day period in July and August of 1999 as part of the Northeast Oxidant and Particulate Study (NE-OPS). Good agreement between the simulations and observations was obtained. The bias in the vicinity of Philadelphia over the simulation period was -5.8 ppb for the peak ozone mixing ratio during the day and 2.0 ppb for the minimum ozone mixing ratio at night. Layers of ozone above the convective boundary layer were measured by both research aircraft and ozonesondes during the morning between 0900 and 1100 LT. The model demonstrates that upwind vertical mixing processes the previous afternoon, subsequent horizontal transport aloft, and depletion of ozone by NO titration within the stable boundary layer at night lead to the development of these layers. Ozone aloft was then entrained into the growing convective boundary, contributing to surface ozone concentrations. Through a series of sensitivity studies, we find that most of the ozone is the result of emissions in the vicinity of Philadelphia and Chesapeake Bay area, but up to 30-40% of the ozone during high ozone episodes was due to transport from upwind sources. Local emissions and meteorological conditions were largely responsible for one high ozone episode because of light winds. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Fast, JD (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd,POB 999, Richland, WA 99352 USA. RI Chapman, Elaine/K-8756-2012; OI Zaveri, Rahul/0000-0001-9874-8807 NR 49 TC 21 Z9 21 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0747-7309 J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD AUG 28 PY 2002 VL 107 IS D16 AR 4307 DI 10.1029/2001JD000980 PG 22 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 634GH UT WOS:000180331300001 ER PT J AU Petkov, V Trikalitis, PN Bozin, ES Billinge, SJL Vogt, T Kanatzidis, MG AF Petkov, V Trikalitis, PN Bozin, ES Billinge, SJL Vogt, T Kanatzidis, MG TI Structure of V2O5 center dot nH(2)O xerogel solved by the atomic pair distribution function technique SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID X-RAY-DIFFRACTION; HYDRATED VANADIUM-OXIDES; LOCAL-STRUCTURE; CONDUCTIVE POLYMER; LAYERED STRUCTURES; V2O5 XEROGELS; NANOCOMPOSITES; PROGRAM; BRONZES; CS AB A long-standing issue regarding the local and long-range structure Of V2O5.nH(2)O xerogel has been successfully addressed. The full three-dimensional structure of the lamellar turbostratic V2O5.nH(2)O xerogel was determined by the atomic pair distribution function technique. We show that on the atomic scale the slabs of the xerogel can be described well as almost perfect pairs (i.e., bilayers) of single V2O5 layers made of square pyramidal VO5 units. These slabs are separated by water molecules and stack along the z-axis of a monoclinic unit cell (space group C2/m) with parameters a = 11.722(3) Angstrom, b = 3.570(3) Angstrom, c = 11.520(3) Angstrom, and beta = 88.65degrees. The stacking sequence shows signatures of turbostratic disorder and a structural coherence limited to 50 Angstrom. C1 Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Michigan State Univ, Ctr Fundamental Mat Res, E Lansing, MI 48824 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Kanatzidis, MG (reprint author), Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. RI Bozin, Emil/E-4679-2011; Trikalitis, Pantelis/E-5696-2011; Vogt, Thomas /A-1562-2011 OI Vogt, Thomas /0000-0002-4731-2787 NR 31 TC 241 Z9 244 U1 8 U2 73 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 28 PY 2002 VL 124 IS 34 BP 10157 EP 10162 AR UNSP JA026143Y DI 10.1021/ja026143y PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA 586GJ UT WOS:000177576000042 PM 12188680 ER PT J AU Wang, XB Inscore, FE Yang, X Cooney, JJA Enemark, JH Wang, LS AF Wang, XB Inscore, FE Yang, X Cooney, JJA Enemark, JH Wang, LS TI Probing the electronic structure of [MoOS4](-) centers using anionic photoelectron spectroscopy SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID DIMETHYL-SULFOXIDE REDUCTASE; MULTIPLY-CHARGED ANIONS; ORDER REGULAR APPROXIMATION; DENSITY-FUNCTIONAL THEORY; M = MO; DMSO REDUCTASE; CRYSTAL-STRUCTURE; ACTIVE-SITE; RHODOBACTER-SPHAEROIDES; SULFITE OXIDASE AB Using photodetachment photoelectron spectroscopy (PES) in the gas phase, we investigated the electronic structure and chemical bonding of six anionic [(MoO)-O-V](3+) complexes, [MoOX4](-) (where X = Cl (1), SPh (2), and SPh-p-Cl (3)), [MoO(edt)(2)](-) (4), [MoO(bdt)(2)](-) (5), and [MOO(bdtCl(2))(2)](-) (6) (where edt = ethane- 1,2-dithiolate, bdt = benzene-1,2-dithiolate, and bdtCl(2) = 3,6-dichlorobenzene-1,2-dithiolate). The gas-phase PES data revealed a wealth of new electronic structure information about the [(MoO)-O-V](3+) complexes. The energy separations between the highest occupied molecular orbital (HOMO) and HOMO-1 were observed to be dependent on the O-Mo-S-C(alpha) dihedral angles and ligand types, being relatively large for the monodentate ligands, 1.32 eV for Cl and 0.78 eV for SPh and SPhCl, compared to those of the bidentate dithiolate complexes, 0.47 eV for edt and 0.44 eV for bdt and bdtCl(2). The threshold PES feature in all six species is shown to have the same origin and is due to detaching the single unpaired electron in the HOMO, mainly of Mo 4d character. This result is consistent with previous theoretical calculations and is verified by comparison with the PES spectra of two d(0) complexes, [VO(bdt)(2)](-) and [VO(bdtCl(2))(2)](-). The observed PES features are interpreted on the basis of theoretical calculations and previous spectroscopic studies in the condensed phase. C1 Univ Arizona, Dept Chem, Tucson, AZ 85721 USA. Washington State Univ, Dept Phys, Richland, WA 99352 USA. Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. RP Enemark, JH (reprint author), Univ Arizona, Dept Chem, Tucson, AZ 85721 USA. FU NIGMS NIH HHS [GM-63555, GM-37773] NR 88 TC 19 Z9 19 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 28 PY 2002 VL 124 IS 34 BP 10182 EP 10191 AR UNSP JA0265557 DI 10.1021/ja0265557 PG 10 WC Chemistry, Multidisciplinary SC Chemistry GA 586GJ UT WOS:000177576000045 PM 12188683 ER PT J AU Robinson, JC Harris, SA Sun, WZ Sveum, NE Neumark, DM AF Robinson, JC Harris, SA Sun, WZ Sveum, NE Neumark, DM TI Photofragment translational spectroscopy of 1,3-butadiene and 1,3-butadiene-1,1,4,4-d(4) at 193 nm SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID ADVANCED LIGHT-SOURCE; HIGH-TEMPERATURE PYROLYSIS; VUV HIGH-RESOLUTION; HIGH-FLUX BEAMLINE; S-TRANS-BUTADIENE; CHEMICAL-DYNAMICS; AB-INITIO; CONICAL INTERSECTION; ULTRAFAST DYNAMICS; DISSOCIATION AB The photodissociation dynamics of 1,3-butadiene at 193 nm have been investigated with photofragment translational spectroscopy coupled with product photoionization using tunable VUV synchrotron radiation. Five product channels are evident from this study: C4H5 + H, C3H3 + CH3, C2H3 + C2H3, C4H4 + H-2, and C2H4 + C2H2. The translational energy (P(Er)) distributions suggest that these channels result from internal conversion to the ground electronic state followed by dissociation. To investigate the dissociation dynamics in more detail, further studies were carried out using 1,3-butadiene-1,1,4,4-d(4). Branching ratios were determined for the channels listed above, as well as relative branching ratios for the isotopomeric species produced from 1,3-butadiene-1,1,4,4-d4 dissociation. C3H3 + CH3 is found to be the dominant channel, followed by C4H5 + H and C2H4 + C2H2, for which the yields are approximately equal. The dominance of the C3H3 + CH3 channel shows that isomerization to 1,2-butadiene followed by dissociation is facile. C1 Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Neumark, DM (reprint author), Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RI Neumark, Daniel/B-9551-2009 OI Neumark, Daniel/0000-0002-3762-9473 NR 58 TC 54 Z9 55 U1 1 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 28 PY 2002 VL 124 IS 34 BP 10211 EP 10224 AR UNSP JA0127281 DI 10.1021/ja0127281 PG 14 WC Chemistry, Multidisciplinary SC Chemistry GA 586GJ UT WOS:000177576000048 PM 12188686 ER PT J AU Song, JM Mobley, J Vo-Dinh, T AF Song, JM Mobley, J Vo-Dinh, T TI Integrated circuit microchip system with multiplex capillary electrophoresis module for DNA analysis SO ANALYTICA CHIMICA ACTA LA English DT Article DE IC microchip; capillary array electrophoresis; DNA separation; DNA ladder ID ARRAY ELECTROPHORESIS; GEL-ELECTROPHORESIS; OPTIMIZATION; BIOCHIPS; PROBES AB In this paper, we describe the use of an integrated circuit (IC) microchip system as a detector in multiplex capillary electrophoresis (CE). This combination of multiplex capillary gel electrophoresis and the IC microchip technology represents a novel approach to DNA analysis on the microchip platform. Separation of DNA ladders using a multiplex CE microsystem of four capillaries was monitored simultaneously using the IC microchip system. The IC microchip-CE system has advantages such as low cost, rapid analysis, compactness, and multiplex capability, and has great potential as an alternative system to conventional capillary array gel electrophoresis systems based on charge-coupled device (CCD) detection. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Oak Ridge Natl Lab, Div Life Sci, Adv Biomed Sci & Technol Grp, Oak Ridge, TN 37831 USA. RP Vo-Dinh, T (reprint author), Oak Ridge Natl Lab, Div Life Sci, Adv Biomed Sci & Technol Grp, POB 2008, Oak Ridge, TN 37831 USA. NR 20 TC 11 Z9 11 U1 4 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD AUG 27 PY 2002 VL 466 IS 2 BP 187 EP 192 AR PII S0003-2670(02)000552-4 DI 10.1016/S0003-2670(02)00552-4 PG 6 WC Chemistry, Analytical SC Chemistry GA 591FT UT WOS:000177869600001 ER PT J AU Ober, DM Thomsen, MF Maynard, NC AF Ober, DM Thomsen, MF Maynard, NC TI Observations of bow shock and magnetopause crossings from geosynchronous orbit on 31 March 2001 SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article DE bow shock; magnetopause; magentosheath; geosynchronous; MPA ID SOLAR-WIND; MAGNETIC-FIELD; MAGNETOSPHERE; SPACECRAFT; POSITION; SHAPE; SIZE AB On 31 March 2001, significant enhancements in both the strength of the interplanetary magnetic field and the solar wind dynamic pressure pushed the magnetopause and bow shock inside of geosynchronous orbit. We present here observations of the unshocked solar wind observed with the Los Alamos magnetospheric plasma analyzer on geosynchronous satellite 1994-084 near local noon. The magnetosheath was observed intermittently at geosynchronous satellites 1991-080, 1994-084, and LANL-01A, across much of the dayside magnetosphere. Comparisons with theory of the observed bow shock and magnetopause locations at geosynchronous orbit near noon are in reasonable agreement. Using nearly simultaneous observations of the magnetopause and bow shock locations at 0451 UT, we have tested models for the thickness of the magnetosheath and flaring of the magnetopause at that time. Using the least flared of the magnetopause models, the estimated thickness of the magnetosheath would be thicker than would be predicted by either the gas dynamic solution of Spreiter et al. [1966] or the MHD simulations of Cairns and Lyon [1996]. Alternatively, placing the location of the magnetopause at the nose of the magnetosphere in conformance with the thickness of the magnetosheath from Cairns and Lyon [1996] requires less flaring on the flanks of the magnetosphere than currently present in the empirical models. The models also have difficulty predicting the other observed magnetopause crossings far from local noon apparently due to excessive flaring of the models for the conditions on this day. C1 Mission Res Corp, Nashua, NH 03062 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Ober, DM (reprint author), Mission Res Corp, 589 W Hollis St,Suite 201, Nashua, NH 03062 USA. EM Dan.Ober@mrcnh.com NR 23 TC 11 Z9 11 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD AUG 27 PY 2002 VL 107 IS A8 AR 1206 DI 10.1029/2001JA000284 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 622FA UT WOS:000179634800001 ER PT J AU Lu, GP Zhang, DX AF Lu, GP Zhang, DX TI Nonstationary stochastic analysis of flow in a heterogeneous semiconfined aquifer SO WATER RESOURCES RESEARCH LA English DT Article DE semiconfined; aquifer; heterogeneous; flow; stochastic; nonstationary ID SPATIAL VARIABILITY; SOLUTE TRANSPORT; GROUNDWATER-FLOW; SPECTRAL METHOD; MEDIA AB [1] In this study, we investigate two-dimensional flow through a heterogeneous, semiconfined aquifer. In the presence of leakage the mean flow varies in space and the fluctuations of the flow become nonstationary spatially. Such a situation calls for a nonstationary stochastic approach since the classical stationary stochastic approaches are no longer appropriate. We make use of a nonstationary spectral method to account for such nonstationarities in finite semiconfined aquifers. Analytical expressions are obtained for head and specific discharge covariances that account for the spatial variability in the mean flow but neglect the contributions of the finite boundaries. Closed-form analytical expressions for the variances of hydraulic head and specific discharge are derived. The statistical structures of the head and specific discharge fields are investigated in terms of the leakage factor and the spatial structure of hydraulic conductivity field. Results based on the nonstationary approach show that the stationary assumption is inappropriate even for a small leakage. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. RP Lu, GP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. RI Zhang, Dongxiao/D-5289-2009 OI Zhang, Dongxiao/0000-0001-6930-5994 NR 17 TC 3 Z9 3 U1 1 U2 5 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 AUG 27 PY 2002 VL 38 IS 8 AR 1155 DI 10.1029/2001WR000546 PG 11 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 622JR UT WOS:000179644400001 ER PT J AU Polson, RC Vardeny, ZV Chinn, DA AF Polson, RC Vardeny, ZV Chinn, DA TI Multiple resonances in microdisk lasers of pi-conjugated polymers SO APPLIED PHYSICS LETTERS LA English DT Article ID MICRORING LASERS; MODES AB We have fabricated microdisk lasers from pi-conjugated polymers that show multiline emission spectrum upon optical excitation. Using Fourier transform analysis, each emission line is assigned integer to an interger Bessel function that helps to estimate the field distribution inside the photoexcited polymer microdisk. We found that the microdisk can sustain two different laser modes with different, though complementary, field distributions and that the index of refraction decreases with increasing excitation intensity. (C) 2002 American Institute of Physics. C1 Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA. Sandia Natl Labs, Livermore, CA 94551 USA. RP Polson, RC (reprint author), Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA. NR 11 TC 22 Z9 22 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 AUG 26 PY 2002 VL 81 IS 9 BP 1561 EP 1563 DI 10.1063/1.1502002 PG 3 WC Physics, Applied SC Physics GA 585XC UT WOS:000177549200007 ER PT J AU Hsueh, CH AF Hsueh, CH TI Devising a method to measure film adhesion through modeling SO APPLIED PHYSICS LETTERS LA English DT Article ID THIN-FILMS; ENERGY; DEPOSITION; COATINGS AB A method for measuring film adhesion is devised. It consists of a series of patterned film strips with different widths on a substrate, such that the driving force for each strip to debond increases as strip width increases when the system is subjected to residual and/or applied stresses. In this case, only those strips with sufficient driving force debond while the others remain attached to the substrate. Hence, qualitative comparison of the interface debond energy can be obtained by comparing the strip width below which debonding no longer occurs. By calculating the driving force for each strip to debond, the interface debond energy can be quantitatively determined. (C) 2002 American Institute of Physics. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Hsueh, CH (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Hsueh, Chun-Hway/G-1345-2011 NR 14 TC 3 Z9 3 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 AUG 26 PY 2002 VL 81 IS 9 BP 1615 EP 1617 DI 10.1063/1.1504180 PG 3 WC Physics, Applied SC Physics GA 585XC UT WOS:000177549200025 ER PT J AU Peralta, XG Allen, SJ Wanke, MC Harff, NE Simmons, JA Lilly, MP Reno, JL Burke, PJ Eisenstein, JP AF Peralta, XG Allen, SJ Wanke, MC Harff, NE Simmons, JA Lilly, MP Reno, JL Burke, PJ Eisenstein, JP TI Terahertz photoconductivity and plasmon modes in double-quantum-well field-effect transistors SO APPLIED PHYSICS LETTERS LA English DT Article ID TWO-DIMENSIONAL PLASMA; COLLECTIVE MODES; ELECTRON-GAS; EMISSION; BILAYER; WAVES AB Double-quantum-well field-effect transistors with a grating gate exhibit a sharply resonant, voltage tuned terahertz photoconductivity. The voltage tuned resonance is determined by the plasma oscillations of the composite structure. The resonant photoconductivity requires a double-quantum well but the mechanism whereby plasma oscillations produce changes in device conductance is not understood. The phenomenon is potentially important for fast, tunable terahertz detectors. (C) 2002 American Institute of Physics. C1 Univ Calif Santa Barbara, Ctr Terahertz Sci & Technol, Santa Barbara, CA 93106 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. CALTECH, Dept Phys, Pasadena, CA 91125 USA. RP Peralta, XG (reprint author), Univ Calif Santa Barbara, Ctr Terahertz Sci & Technol, Santa Barbara, CA 93106 USA. RI Burke, Peter/F-3308-2010; Peralta, Xomalin/F-3710-2014 OI Peralta, Xomalin/0000-0002-4034-3214 NR 18 TC 239 Z9 241 U1 3 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 AUG 26 PY 2002 VL 81 IS 9 BP 1627 EP 1629 DI 10.1063/1.1497433 PG 3 WC Physics, Applied SC Physics GA 585XC UT WOS:000177549200029 ER PT J AU Cheon, KO Shinar, J AF Cheon, KO Shinar, J TI Bright white small molecular organic light-emitting devices based on a red-emitting guest-host layer and blue-emitting 4,4(')-bis(2,2(')-diphenylvinyl)-1,1 '-biphenyl SO APPLIED PHYSICS LETTERS LA English DT Article ID DIODES; ELECTROLUMINESCENCE; FABRICATION; TRANSPORT; CATHODE; DOPANT AB Bright multilayer white organic light-emitting devices (OLEDs) based on red-emitting [2-methyl-6-[2-similar to(2,3,6,7-tetrahydro-1H, 5H-benzo [ij] quinolizin-9-yl)-ethenyl]-4H-pyran4-ylidene] propane-dinitrile (DCM2)-doped N,N-'-diphenyl-N,N-'-bis(1-naphthylphenyl)-1,1(')-biphenyl-4,4(')-diamine (alpha-NPD) and blue-emitting 4,4(')-bis(2,2(')-diphenylvinyl)-1,1(')-biphenyl (DPVBi) are described. The blue emission increased relative to the red emission with increasing bias, but the color coordinates of the total emission were well within the white region at V>10 V. The most lightly doped device, which contained a 5 nm thick layer of 0.5 wt. % of the dye dopant, exhibited the highest power efficiency, 4.1 lm/W, external quantum efficiency of 3.0%, and white brightness L-max>50 000 Cd/m(2) (at similar to1100 mA/cm(2)). (C) 2002 American Institute of Physics. C1 Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Cheon, KO (reprint author), Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. NR 18 TC 160 Z9 168 U1 2 U2 19 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 26 PY 2002 VL 81 IS 9 BP 1738 EP 1740 DI 10.1063/1.1498500 PG 3 WC Physics, Applied SC Physics GA 585XC UT WOS:000177549200066 ER PT J AU Ma, Q Moldovan, N Mancini, DC Rosenberg, RA AF Ma, Q Moldovan, N Mancini, DC Rosenberg, RA TI Synchrotron-radiation-induced wet etching of germanium SO APPLIED PHYSICS LETTERS LA English DT Article ID III-V-SEMICONDUCTORS; N-TYPE GAN; GAAS AB A room-temperature photoinduced chemical wet etching process for Ge wafers using x rays from a synchrotron radiation source is described. De-ionized water and H2O:HNO3 solutions were used as etchants. This process produces smoothly etched Ge surfaces with a root-mean-square surface roughness of a few angstroms. Etching chemistry and etching conditions, such as x-ray beam sizes, solution concentration, and doping type, are discussed. (C) 2002 American Institute of Physics. C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Ma, Q (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Rosenberg, Richard/K-3442-2012 NR 22 TC 7 Z9 7 U1 1 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 26 PY 2002 VL 81 IS 9 BP 1741 EP 1743 DI 10.1063/1.1499530 PG 3 WC Physics, Applied SC Physics GA 585XC UT WOS:000177549200067 ER PT J AU Sorensen, KJ Attix, CM Christian, AT Wyrobek, AJ Tucker, JD AF Sorensen, KJ Attix, CM Christian, AT Wyrobek, AJ Tucker, JD TI Adaptive response induction and variation in human lymphoblastoid cell lines SO MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS LA English DT Article DE ionizing radiation; adaptive response; human lymphoblastoid cells ID LOW-DOSE RADIATION; HUMAN-LYMPHOCYTES; IONIZING-RADIATION; X-RAYS; MARROW-CELLS; GAMMA-RAYS; MICE; ABERRATIONS; IRRADIATION; DNA AB Adaptive response is a term used to describe the ability of a low, priming dose of ionizing radiation to modify the effects of a subsequent higher, challenge dose, but it has been observed to be highly variable in both presence and magnitude. To examine this variability, 10 human lymphoblastoid cell Lines were screened for adaptability to Cs-137 radiation by determining the frequency of micronuclei in binucleated cells. Of these, six adapted, three did not adapt and one was synergistic. The assay was then repeated on each of the cell lines to test for reproducibility. Five cell lines showed the same result both times; four of these adapted and one did not. To determine whether fluctuations in the cell cycle distribution in the irradiated population of cells could alter the adaptive response, and therefore explain some of the observed variability, two of the cell lines were tested for adaptation after enriching the population, by synchronization, for a given cell cycle stage. In both cell lines, the direction of the response was altered when the distribution of cells within the cell cycle was changed, suggesting that the adaptive response can be affected by cell cycle stage at the time of irradiation. (C) 2002 Elsevier Science B.V. All rights reserved. C1 L448 Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94551 USA. RP Sorensen, KJ (reprint author), L448 Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, POB 808,7000 East Ave, Livermore, CA 94551 USA. NR 35 TC 22 Z9 26 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1383-5718 J9 MUTAT RES-GEN TOX EN JI Mutat. Res. Genet. Toxicol. Environ. Mutagen. PD AUG 26 PY 2002 VL 519 IS 1-2 BP 15 EP 24 AR PII S1383-5718(02)00110-9 DI 10.1016/S1383-5718(02)00110-9 PG 10 WC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology SC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology GA 590RE UT WOS:000177835200002 PM 12160888 ER PT J AU Gelis, F Peshier, A AF Gelis, F Peshier, A TI Probing colored glass via q(q)over-bar photoproduction II: diffraction SO NUCLEAR PHYSICS A LA English DT Article ID GLUON DISTRIBUTION-FUNCTIONS; MCLERRAN-VENUGOPALAN MODEL; HEAVY-ION COLLISIONS; ART. NO. 114023; RENORMALIZATION-GROUP; TRANSVERSE-MOMENTUM; NUCLEAR COLLISIONS; SMALL-X; EVOLUTION; DENSITY AB In this paper, we consider the diffractive photoproduction of quark-antiquark pairs in peripheral heavy-ion collisions. The color field of the nuclei is treated within the Colored Glass Condensate model. The cross section turns out to be very sensitive to the value of the saturation scale. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Paris 11, Lab Phys Teor, F-91405 Orsay, France. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Gelis, F (reprint author), Univ Paris 11, Lab Phys Teor, Bat 210, F-91405 Orsay, France. NR 43 TC 15 Z9 15 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD AUG 26 PY 2002 VL 707 IS 1-2 BP 175 EP 192 AR PII S0375-9474(02)00752-2 DI 10.1016/S0375-9474(02)00752-2 PG 18 WC Physics, Nuclear SC Physics GA 584JF UT WOS:000177462900009 ER PT J AU Hirata, Y Ohnishi, A Nara, Y Kido, T Maruyama, T Otuka, N Niita, K Takada, H Chiba, S AF Hirata, Y Ohnishi, A Nara, Y Kido, T Maruyama, T Otuka, N Niita, K Takada, H Chiba, S TI Sideward peak of intermediate mass fragments in high energy proton induced reactions SO NUCLEAR PHYSICS A LA English DT Article ID QUANTUM MOLECULAR-DYNAMICS; HEAVY-ION COLLISIONS; GAS PHASE-TRANSITION; NUCLEAR FRAGMENTATION; CASCADE MODEL; MULTIFRAGMENTATION; DISTRIBUTIONS; EQUATION; MATTER C1 Hokkaido Univ, Grad Sch Sci, Div Phys, Sapporo, Hokkaido 0600810, Japan. Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. Res Org Informat Sci & Technol, Ibaraki 3191195, Japan. Japan Atom Energy Res Inst, Adv Sci Res Ctr, Ibaraki 3191195, Japan. Japan Atom Energy Res Inst, Ctr Neutron Sci, Ibaraki 3191195, Japan. Univ Tokyo, Inst Med Sci, Human Genome Ctr, Tokyo 1088639, Japan. Hokkaido Univ, Grad Sch Engn, Mem Media Lab, Sapporo, Hokkaido 0600810, Japan. Hitechs Inc, Kurobe 9380044, Japan. RP Hirata, Y (reprint author), Hokkaido Univ, Grad Sch Sci, Div Phys, Sapporo, Hokkaido 0600810, Japan. RI Ohnishi, Akira/F-7403-2011; Chiba, Satoshi/E-8193-2014 OI Ohnishi, Akira/0000-0003-1513-0468; NR 33 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD AUG 26 PY 2002 VL 707 IS 1-2 BP 193 EP 212 DI 10.1016/S0375-9474(02)00747-9 PG 20 WC Physics, Nuclear SC Physics GA 584JF UT WOS:000177462900010 ER PT J AU Adcox, K Adler, SS Ajitanand, NN Akiba, Y Alexander, J Aphecetche, L Arai, Y Aronson, SH Averbeck, R Awes, TC Barish, KN Barnes, PD Barrette, J Bassalleck, B Bathe, S Baublis, V Bazilevsky, A Belikov, S Bellaiche, FG Belyaev, ST Bennett, MJ Berdnikov, Y Botelho, S Brooks, ML Brown, DS Bruner, N Bucher, D Buesching, H Bumazhnov, V Bunce, G Burward-Hoy, J Butsyk, S Carey, TA Chand, P Chang, J Chang, WC Chavez, LL Chernichenko, S Chi, CY Chiba, J Chiu, M Choudhury, RK Christ, T Chujo, T Chung, MS Chung, P Cianciolo, V Cole, BA D'Enterria, DG David, G Delagrange, H Denisov, A Deshpande, A Desmond, EJ Dietzsch, O Dinesh, BV Drees, A Durum, A Dutta, D Ebisu, K Efremenko, YV El Chenawi, K En'yo, H Esumi, S Ewell, L Ferdousi, T Fields, DE Fokin, SL Fraenkel, Z Franz, A Frawley, AD Fung, SY Garpman, S Ghosh, TK Glenn, A Godoi, AL Goto, Y Greene, SV Perdekamp, MG Gupta, SK Guryn, W Gustafsson, HA Haggerty, JS Hamagaki, H Hansen, AG Hara, H Hartouni, EP Hayano, R Hayashi, N He, X Hemmick, TK Heuser, JM Hibino, M Hill, JC Ho, DS Homma, K Hong, B Hoover, A Ichihara, T Imai, K Ippolitov, MS Ishihara, M Jacak, BV Jang, WY Jia, J Johnson, BM Johnson, SC Joo, KS Kametani, S Kang, JH Kann, M Kapoor, SS Kelly, S Khachaturov, B Khanzadeev, A Kikuchi, J Kim, DJ Kim, HJ Kim, SY Kim, YG Kinnison, WW Kistenev, E Kiyomichi, A Klein-Boesing, C Klinksiek, S Kochenda, L Kochetkov, V Koehler, D Kohama, T Kotchetkov, D Kozlov, A Kroon, PJ Kurita, K Kweon, MJ Kwon, Y Kyle, GS Lacey, R Lajoie, JG Lauret, J Lebedev, A Lee, DM Leitch, MJ Li, XH Li, Z Lim, DJ Liu, MX Liu, X Liu, Z Maguire, CF Mahon, J Makdisi, YI Manko, VI Mao, Y Mark, SK Markacs, S Martinez, G Marx, MD Masaike, A Matathias, F Matsumoto, T McGaughey, PL Melnikov, E Merschmeyer, M Messer, F Messer, M Miake, Y Miller, TE Milov, A Mioduszewski, S Mischke, RE Mishra, GC Mitchell, JT Mohanty, AK Morrison, DP Moss, JM Muhlbacher, F Mukhopadhyay, D Muniruzzaman, M Murata, J Nagamiya, S Nagasaka, Y Nagle, JL Nakada, Y Nandi, BK Newby, J Nikkinen, L Nilsson, P Nishimura, S Nyanin, AS Nystrand, J O'Brien, E Ogilvie, CA Ohnishi, H Ojha, ID Ono, M Onuchin, V Oskarsson, A Osterman, L Otterlund, I Oyama, K Paffrath, L Pal, D Palounek, APT Pantuev, VS Papavassiliou, V Pate, SF Peitzmann, T Petridis, AN Pinkenburg, C Pisani, RP Pitukhin, P Plasil, F Pollack, M Pope, K Purschke, ML Ravinovich, I Read, KF Reygers, K Riabov, V Riabov, Y Rosati, M Rose, AA Ryu, SS Saito, N Sakaguchi, A Sakaguchi, T Sako, H Sakuma, T Samsonov, V Sangster, TC Santo, R Sato, HD Sato, S Sawada, S Schlei, BR Schutz, Y Semenov, V Seto, R Shea, TK Shein, I Shibata, TA Shigaki, K Shiina, T Shin, YH Sibiriak, IG Silvermyr, D Sim, KS Simon-Gillo, J Singh, CP Singh, V Sivertz, M Soldatov, A Soltz, RA Sorensen, S Stankus, PW Starinsky, N Steinberg, P Stenlund, E Ster, A Stoll, SP Sugioka, M Sugitate, T Sullivan, JP Sumi, Y Sun, Z Suzuki, M Takagui, EM Taketani, A Tamai, M Tanaka, KH Tanaka, Y Taniguchi, E Tannenbaum, MJ Thomas, J Thomas, JH Thomas, TL Tian, W Tojo, J Torii, H Towell, RS Tserruya, I Tsuruoka, H Tsvetkov, AA Tuli, SK Tydesjo, H Tyurin, N Ushiroda, T van Hecke, HW Velissaris, C Velkovska, J Velkovsky, M Vinogradov, AA Volkov, MA Vorobyov, A Vznuzdaev, E Wang, H Watanabe, Y White, SN Witzig, C Wohn, FK Woody, CL Xie, W Yagi, K Yokkaichi, S Young, GR Yushmanov, IE Zajc, WA Zhang, Z Zhou, S Zhou, S AF Adcox, K Adler, SS Ajitanand, NN Akiba, Y Alexander, J Aphecetche, L Arai, Y Aronson, SH Averbeck, R Awes, TC Barish, KN Barnes, PD Barrette, J Bassalleck, B Bathe, S Baublis, V Bazilevsky, A Belikov, S Bellaiche, FG Belyaev, ST Bennett, MJ Berdnikov, Y Botelho, S Brooks, ML Brown, DS Bruner, N Bucher, D Buesching, H Bumazhnov, V Bunce, G Burward-Hoy, J Butsyk, S Carey, TA Chand, P Chang, J Chang, WC Chavez, LL Chernichenko, S Chi, CY Chiba, J Chiu, M Choudhury, RK Christ, T Chujo, T Chung, MS Chung, P Cianciolo, V Cole, BA D'Enterria, DG David, G Delagrange, H Denisov, A Deshpande, A Desmond, EJ Dietzsch, O Dinesh, BV Drees, A Durum, A Dutta, D Ebisu, K Efremenko, YV El Chenawi, K En'yo, H Esumi, S Ewell, L Ferdousi, T Fields, DE Fokin, SL Fraenkel, Z Franz, A Frawley, AD Fung, SY Garpman, S Ghosh, TK Glenn, A Godoi, AL Goto, Y Greene, SV Perdekamp, MG Gupta, SK Guryn, W Gustafsson, HA Haggerty, JS Hamagaki, H Hansen, AG Hara, H Hartouni, EP Hayano, R Hayashi, N He, X Hemmick, TK Heuser, JM Hibino, M Hill, JC Ho, DS Homma, K Hong, B Hoover, A Ichihara, T Imai, K Ippolitov, MS Ishihara, M Jacak, BV Jang, WY Jia, J Johnson, BM Johnson, SC Joo, KS Kametani, S Kang, JH Kann, M Kapoor, SS Kelly, S Khachaturov, B Khanzadeev, A Kikuchi, J Kim, DJ Kim, HJ Kim, SY Kim, YG Kinnison, WW Kistenev, E Kiyomichi, A Klein-Boesing, C Klinksiek, S Kochenda, L Kochetkov, V Koehler, D Kohama, T Kotchetkov, D Kozlov, A Kroon, PJ Kurita, K Kweon, MJ Kwon, Y Kyle, GS Lacey, R Lajoie, JG Lauret, J Lebedev, A Lee, DM Leitch, MJ Li, XH Li, Z Lim, DJ Liu, MX Liu, X Liu, Z Maguire, CF Mahon, J Makdisi, YI Manko, VI Mao, Y Mark, SK Markacs, S Martinez, G Marx, MD Masaike, A Matathias, F Matsumoto, T McGaughey, PL Melnikov, E Merschmeyer, M Messer, F Messer, M Miake, Y Miller, TE Milov, A Mioduszewski, S Mischke, RE Mishra, GC Mitchell, JT Mohanty, AK Morrison, DP Moss, JM Muhlbacher, F Mukhopadhyay, D Muniruzzaman, M Murata, J Nagamiya, S Nagasaka, Y Nagle, JL Nakada, Y Nandi, BK Newby, J Nikkinen, L Nilsson, P Nishimura, S Nyanin, AS Nystrand, J O'Brien, E Ogilvie, CA Ohnishi, H Ojha, ID Ono, M Onuchin, V Oskarsson, A Osterman, L Otterlund, I Oyama, K Paffrath, L Pal, D Palounek, APT Pantuev, VS Papavassiliou, V Pate, SF Peitzmann, T Petridis, AN Pinkenburg, C Pisani, RP Pitukhin, P Plasil, F Pollack, M Pope, K Purschke, ML Ravinovich, I Read, KF Reygers, K Riabov, V Riabov, Y Rosati, M Rose, AA Ryu, SS Saito, N Sakaguchi, A Sakaguchi, T Sako, H Sakuma, T Samsonov, V Sangster, TC Santo, R Sato, HD Sato, S Sawada, S Schlei, BR Schutz, Y Semenov, V Seto, R Shea, TK Shein, I Shibata, TA Shigaki, K Shiina, T Shin, YH Sibiriak, IG Silvermyr, D Sim, KS Simon-Gillo, J Singh, CP Singh, V Sivertz, M Soldatov, A Soltz, RA Sorensen, S Stankus, PW Starinsky, N Steinberg, P Stenlund, E Ster, A Stoll, SP Sugioka, M Sugitate, T Sullivan, JP Sumi, Y Sun, Z Suzuki, M Takagui, EM Taketani, A Tamai, M Tanaka, KH Tanaka, Y Taniguchi, E Tannenbaum, MJ Thomas, J Thomas, JH Thomas, TL Tian, W Tojo, J Torii, H Towell, RS Tserruya, I Tsuruoka, H Tsvetkov, AA Tuli, SK Tydesjo, H Tyurin, N Ushiroda, T van Hecke, HW Velissaris, C Velkovska, J Velkovsky, M Vinogradov, AA Volkov, MA Vorobyov, A Vznuzdaev, E Wang, H Watanabe, Y White, SN Witzig, C Wohn, FK Woody, CL Xie, W Yagi, K Yokkaichi, S Young, GR Yushmanov, IE Zajc, WA Zhang, Z Zhou, S Zhou, S CA PHENIX Collaboration TI Measurement of Lambda and (Lambda)over-bar particles in Au plus Au collisions at root s(NN)=130 GeV SO PHYSICAL REVIEW LETTERS LA English DT Article ID BARYON NUMBER; NUCLEON AB We present results on the measurement of Lambda and (&ULambda;) over bar production in Au+Au collisions at roots(NN)=130 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. The transverse momentum spectra were measured for minimum bias and for the 5% most central events. The (&ULambda;) over bar/Lambda ratios are constant as a function of p(T) and the number of participants. The measured net Lambda density is significantly larger than predicted by models based on hadronic strings (e.g., HIJING) but in approximate agreement with models which include the gluon-junction mechanism. C1 Vanderbilt Univ, Nashville, TN 37235 USA. Acad Sinica, Inst Phys, Taipei 11529, Taiwan. Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India. Brookhaven Natl Lab, Upton, NY 11973 USA. Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India. Univ Calif Riverside, Riverside, CA 92521 USA. China Inst Atom Energy, Beijing, Peoples R China. Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan. Columbia Univ, New York, NY 10027 USA. Nevis Labs, Irvington, NY 10533 USA. Florida State Univ, Tallahassee, FL 32306 USA. Georgia State Univ, Atlanta, GA 30303 USA. Hiroshima Univ, Higashihiroshima 7398526, Japan. Inst High Energy Phys, Protvino, Russia. Iowa State Univ, Ames, IA 50011 USA. KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. Korea Univ, Seoul 136701, South Korea. Kurchatov Inst, Russian Res Ctr, Moscow, Russia. Kyoto Univ, Kyoto 606, Japan. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Lund Univ, Dept Phys, SE-22100 Lund, Sweden. McGill Univ, Montreal, PQ H3A 2T8, Canada. Univ Munster, Inst Kernphys, D-48149 Munster, Germany. Myongji Univ, Kyonggi Do 449728, South Korea. Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan. Univ New Mexico, Albuquerque, NM 87131 USA. New Mexico State Univ, Las Cruces, NM 88003 USA. SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. PNPI, Petersburg Nucl Phys Inst, Gatchina, Russia. RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil. Univ Nantes, CNRS, IN2P3, SUBATECH,Ecol Mines Nantes, F-44307 Nantes 3, France. St Petersburg State Tech Univ, St Petersburg, Russia. Univ Tennessee, Knoxville, TN 37996 USA. Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. Univ Tokyo, Tokyo, Japan. Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan. Waseda Univ, Adv Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1620044, Japan. Weizmann Inst Sci, IL-76100 Rehovot, Israel. Yonsei Univ, IPAP, Seoul 120749, South Korea. KFKI Res Inst Particle & Nucl Phys RMKI, Budapest, Hungary. RP Adcox, K (reprint author), Vanderbilt Univ, 221 Kirkland Hall, Nashville, TN 37235 USA. RI seto, richard/G-8467-2011; Peitzmann, Thomas/K-2206-2012; En'yo, Hideto/B-2440-2015; Hayano, Ryugo/F-7889-2012; HAMAGAKI, HIDEKI/G-4899-2014; Durum, Artur/C-3027-2014; Yokkaichi, Satoshi/C-6215-2017; Taketani, Atsushi/E-1803-2017; Semenov, Vitaliy/E-9584-2017 OI Peitzmann, Thomas/0000-0002-7116-899X; Hayano, Ryugo/0000-0002-1214-7806; Taketani, Atsushi/0000-0002-4776-2315; NR 19 TC 94 Z9 93 U1 6 U2 10 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 AUG 26 PY 2002 VL 89 IS 9 AR 092302 DI 10.1103/PhysRevLett.89.092302 PG 6 WC Physics, Multidisciplinary SC Physics GA 585MR UT WOS:000177529000011 PM 12190391 ER PT J AU Adler, C Ahammed, Z Allgower, C Amonett, J Anderson, BD Anderson, M Averichev, GS Balewski, J Barannikova, O Barnby, LS Baudot, J Bekele, S Belaga, VV Bellwied, R Berger, J Bichsel, H Billmeier, A Bland, LC Blyth, CO Bonner, BE Boucham, A Brandin, A Bravar, A Cadman, RV Caines, H Sanchez, MCD Cardenas, A Carroll, J Castillo, J Castro, M Cebra, D Chaloupka, P Chattopadhyay, S Chen, Y Chernenko, SP Cherney, M Chikanian, A Choi, B Christie, W Coffin, JP Cormier, TM Cramer, JG Crawford, HJ Deng, WS Derevschikov, AA Didenko, L Dietel, T Draper, JE Dunin, VB Dunlop, JC Eckardt, V Efimov, LG Emelianov, V Engelage, J Eppley, G Erazmus, B Fachini, P Faine, V Faivre, J Filimonov, K Finch, E Fisyak, Y Flierl, D Foley, KJ Fu, J Gagliardi, CA Gagunashvili, N Gans, J Gaudichet, L Germain, M Geurts, F Ghazikhanian, V Grachov, O Grigoriev, V Guedon, M Gushin, E Hallman, TJ Hardtke, D Harris, JW Henry, TW Heppelmann, S Herston, T Hippolyte, B Hirsch, A Hjort, E Hoffmann, GW Horsley, M Huang, HZ Humanic, TJ Igo, G Ishihara, A Ivanshin, YI Jacobs, P Jacobs, WW Janik, M Johnson, I Jones, PG Judd, EG Kaneta, M Kaplan, M Keane, D Kiryluk, J Kisiel, A Klay, J Klein, SR Klyachko, A Konstantinov, AS Kopytine, M Kotchenda, L Kovalenko, AD Kramer, M Kravtsov, P Krueger, K Kuhn, C Kulikov, AI Kunde, GJ Kunz, CL Kutuev, RK Kuznetsov, AA Lakehal-Ayat, L Lamont, MAC Landgraf, JM Lange, S Lansdell, CP Lasiuk, B Laue, F Lauret, J Lebedev, A Lednicky, R Leontiev, VM LeVine, MJ Li, Q Lindenbaum, SJ Lisa, MA Liu, F Liu, L Liu, Z Liu, QJ Ljubicic, T Llope, WJ LoCurto, G Long, H Longacre, RS Lopez-Noriega, M Love, WA Ludlam, T Lynn, D Ma, J Majka, R Margetis, S Markert, C Martin, L Marx, J Matis, HS Matulenko, YA McShane, TS Meissner, F Melnick, Y Meschanin, A Messer, M Miller, ML Milosevich, Z Minaev, NG Mitchell, J Moiseenko, VA Moore, CF Morozov, V de Moura, MM Munhoz, MG Nelson, JM Nevski, P Nikitin, VA Nogach, LV Norman, B Nurushev, SB Odyniec, G Ogawa, A Okorokov, V Oldenburg, M Olson, D Paic, G Pandey, SU Panebratsev, Y Panitkin, SY Pavlinov, AI Pawlak, T Perevoztchikov, V Peryt, W Petrov, VA Planinic, M Pluta, J Porile, N Porter, J Poskanzer, AM Potrebenikova, E Prindle, D Pruneau, C Putschke, J Rai, G Rakness, G Ravel, O Ray, RL Razin, SV Reichhold, D Reid, JG Renault, G Retiere, F Ridiger, A Ritter, HG Roberts, JB Rogachevski, OV Romero, JL Rose, A Roy, C Rykov, V Sakrejda, I Salur, S Sandweiss, J Saulys, AC Savin, I Schambach, J Scharenberg, RP Schmitz, N Schroeder, LS Schuttauf, A Schweda, K Seger, J Seliverstov, D Seyboth, P Shahaliev, E Shestermanov, KE Shimanskii, SS Shvetcov, VS Skoro, G Smirnov, N Snellings, R Sorensen, P Sowinski, J Spinka, HM Srivastava, B Stephenson, EJ Stock, R Stolpovsky, A Strikhanov, M Stringfellow, B Struck, C Suaide, AAP Sugarbaker, E Suire, C Sumbera, M Surrow, B Symons, TJM de Toledo, AS Szarwas, P Tai, A Takahashi, J Tang, AH Thomas, JH Thompson, M Tikhomirov, V Tokarev, M Tonjes, MB Trainor, TA Trentalange, S Tribble, RE Trofimov, V Tsai, O Ullrich, T Underwood, DG Van Buren, G VanderMolen, AM Vasilevski, IM Vasiliev, AN Vigdor, SE Voloshin, SA Wang, F Ward, H Watson, JW Wells, R Westfall, GD Whitten, C Wieman, H Willson, R Wissink, SW Witt, R Wood, J Xu, N Xu, Z Yakutin, AE Yamamoto, E Yang, J Yepes, P Yurevich, VI Zanevski, YV Zborovsky, I Zhang, H Zhang, WM Zoulkarneev, R Zubarev, AN AF Adler, C Ahammed, Z Allgower, C Amonett, J Anderson, BD Anderson, M Averichev, GS Balewski, J Barannikova, O Barnby, LS Baudot, J Bekele, S Belaga, VV Bellwied, R Berger, J Bichsel, H Billmeier, A Bland, LC Blyth, CO Bonner, BE Boucham, A Brandin, A Bravar, A Cadman, RV Caines, H Sanchez, MCD Cardenas, A Carroll, J Castillo, J Castro, M Cebra, D Chaloupka, P Chattopadhyay, S Chen, Y Chernenko, SP Cherney, M Chikanian, A Choi, B Christie, W Coffin, JP Cormier, TM Cramer, JG Crawford, HJ Deng, WS Derevschikov, AA Didenko, L Dietel, T Draper, JE Dunin, VB Dunlop, JC Eckardt, V Efimov, LG Emelianov, V Engelage, J Eppley, G Erazmus, B Fachini, P Faine, V Faivre, J Filimonov, K Finch, E Fisyak, Y Flierl, D Foley, KJ Fu, J Gagliardi, CA Gagunashvili, N Gans, J Gaudichet, L Germain, M Geurts, F Ghazikhanian, V Grachov, O Grigoriev, V Guedon, M Gushin, E Hallman, TJ Hardtke, D Harris, JW Henry, TW Heppelmann, S Herston, T Hippolyte, B Hirsch, A Hjort, E Hoffmann, GW Horsley, M Huang, HZ Humanic, TJ Igo, G Ishihara, A Ivanshin, YI Jacobs, P Jacobs, WW Janik, M Johnson, I Jones, PG Judd, EG Kaneta, M Kaplan, M Keane, D Kiryluk, J Kisiel, A Klay, J Klein, SR Klyachko, A Konstantinov, AS Kopytine, M Kotchenda, L Kovalenko, AD Kramer, M Kravtsov, P Krueger, K Kuhn, C Kulikov, AI Kunde, GJ Kunz, CL Kutuev, RK Kuznetsov, AA Lakehal-Ayat, L Lamont, MAC Landgraf, JM Lange, S Lansdell, CP Lasiuk, B Laue, F Lauret, J Lebedev, A Lednicky, R Leontiev, VM LeVine, MJ Li, Q Lindenbaum, SJ Lisa, MA Liu, F Liu, L Liu, Z Liu, QJ Ljubicic, T Llope, WJ LoCurto, G Long, H Longacre, RS Lopez-Noriega, M Love, WA Ludlam, T Lynn, D Ma, J Majka, R Margetis, S Markert, C Martin, L Marx, J Matis, HS Matulenko, YA McShane, TS Meissner, F Melnick, Y Meschanin, A Messer, M Miller, ML Milosevich, Z Minaev, NG Mitchell, J Moiseenko, VA Moore, CF Morozov, V de Moura, MM Munhoz, MG Nelson, JM Nevski, P Nikitin, VA Nogach, LV Norman, B Nurushev, SB Odyniec, G Ogawa, A Okorokov, V Oldenburg, M Olson, D Paic, G Pandey, SU Panebratsev, Y Panitkin, SY Pavlinov, AI Pawlak, T Perevoztchikov, V Peryt, W Petrov, VA Planinic, M Pluta, J Porile, N Porter, J Poskanzer, AM Potrebenikova, E Prindle, D Pruneau, C Putschke, J Rai, G Rakness, G Ravel, O Ray, RL Razin, SV Reichhold, D Reid, JG Renault, G Retiere, F Ridiger, A Ritter, HG Roberts, JB Rogachevski, OV Romero, JL Rose, A Roy, C Rykov, V Sakrejda, I Salur, S Sandweiss, J Saulys, AC Savin, I Schambach, J Scharenberg, RP Schmitz, N Schroeder, LS Schuttauf, A Schweda, K Seger, J Seliverstov, D Seyboth, P Shahaliev, E Shestermanov, KE Shimanskii, SS Shvetcov, VS Skoro, G Smirnov, N Snellings, R Sorensen, P Sowinski, J Spinka, HM Srivastava, B Stephenson, EJ Stock, R Stolpovsky, A Strikhanov, M Stringfellow, B Struck, C Suaide, AAP Sugarbaker, E Suire, C Sumbera, M Surrow, B Symons, TJM de Toledo, AS Szarwas, P Tai, A Takahashi, J Tang, AH Thomas, JH Thompson, M Tikhomirov, V Tokarev, M Tonjes, MB Trainor, TA Trentalange, S Tribble, RE Trofimov, V Tsai, O Ullrich, T Underwood, DG Van Buren, G VanderMolen, AM Vasilevski, IM Vasiliev, AN Vigdor, SE Voloshin, SA Wang, F Ward, H Watson, JW Wells, R Westfall, GD Whitten, C Wieman, H Willson, R Wissink, SW Witt, R Wood, J Xu, N Xu, Z Yakutin, AE Yamamoto, E Yang, J Yepes, P Yurevich, VI Zanevski, YV Zborovsky, I Zhang, H Zhang, WM Zoulkarneev, R Zubarev, AN CA STAR Collaboration TI Midrapidity Lambda and (Lambda)over-bar production in Au plus Au collisions at root s(NN)=130 GeV SO PHYSICAL REVIEW LETTERS LA English DT Article ID HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; CHARGED-PARTICLE MULTIPLICITY; ENERGY NUCLEAR COLLISIONS; FREEZE-OUT; BARYON PRODUCTION; PB COLLISIONS; STRANGENESS; DEPENDENCE; EXPANSION AB We report the first measurement of strange (Lambda) and antistrange ((&ULambda;) over bar) baryon production from s(NN)=130 GeV Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC). Rapidity density and transverse mass distributions at midrapidity are presented as a function of centrality. The yield of Lambda and (&ULambda;) over bar hyperons is found to be approximately proportional to the number of negative hadrons. The production of (&ULambda;) over bar hyperons relative to negative hadrons increases very rapidly with transverse momentum. The magnitude of the increase cannot be described by existing hadronic string fragmentation models alone. C1 Univ Frankfurt, D-6000 Frankfurt, Germany. Argonne Natl Lab, Argonne, IL 60439 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Univ Birmingham, Birmingham, W Midlands, England. Univ Calif Berkeley, Berkeley, CA 94720 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Los Angeles, Los Angeles, CA 90095 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Creighton Univ, Omaha, NE 68178 USA. Lab High Energy JINR, Dubna, Russia. Particle Phys Lab JINR, Dubna, Russia. Indiana Univ, Bloomington, IN 47408 USA. Inst Rech Subatom, Strasbourg, France. Kent State Univ, Kent, OH 44242 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. Michigan State Univ, E Lansing, MI 48824 USA. Moscow Phys Engn Inst, Moscow, Russia. CUNY City Coll, New York, NY 10031 USA. Ohio State Univ, Columbus, OH 43210 USA. Penn State Univ, University Pk, PA 16802 USA. Inst High Energy Phys, Protvino, Russia. Purdue Univ, W Lafayette, IN 47907 USA. Rice Univ, Houston, TX 77251 USA. Univ Sao Paulo, Sao Paulo, Brazil. SUBATECH, Nantes, France. Texas A&M Univ, College Stn, TX 77843 USA. Univ Texas, Austin, TX 78712 USA. Warsaw Univ Technol, Warsaw, Poland. Univ Washington, Seattle, WA 98195 USA. Wayne State Univ, Detroit, MI 48201 USA. CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China. Yale Univ, New Haven, CT 06520 USA. RP Adler, C (reprint author), Univ Frankfurt, D-6000 Frankfurt, Germany. RI Strikhanov, Mikhail/P-7393-2014; Kisiel, Adam/O-8754-2015; Tikhomirov, Vladimir/M-6194-2015; Chaloupka, Petr/E-5965-2012; Suaide, Alexandre/L-6239-2016; Castillo Castellanos, Javier/G-8915-2013; Voloshin, Sergei/I-4122-2013; Johnson, Ian/I-2439-2013; Lednicky, Richard/K-4164-2013; Zborovsky, Imrich/G-7964-2014; Sumbera, Michal/O-7497-2014; Skoro, Goran/P-1229-2014; Skoro, Goran/F-3642-2010; Barnby, Lee/G-2135-2010; Takahashi, Jun/B-2946-2012; Chen, Yu/E-3788-2012; Planinic, Mirko/E-8085-2012; Witt, Richard/H-3560-2012 OI Strikhanov, Mikhail/0000-0003-2586-0405; Kisiel, Adam/0000-0001-8322-9510; Tikhomirov, Vladimir/0000-0002-9634-0581; Suaide, Alexandre/0000-0003-2847-6556; Castillo Castellanos, Javier/0000-0002-5187-2779; Sumbera, Michal/0000-0002-0639-7323; Skoro, Goran/0000-0001-7745-9045; Barnby, Lee/0000-0001-7357-9904; Takahashi, Jun/0000-0002-4091-1779; NR 35 TC 14 Z9 14 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 26 PY 2002 VL 89 IS 9 AR 092301 DI 10.1103/PhysRevLett.89.092301 PG 6 WC Physics, Multidisciplinary SC Physics GA 585MR UT WOS:000177529000010 ER PT J AU Bailey, JE Chandler, GA Slutz, SA Bennett, GR Cooper, G Lash, JS Lazier, S Lemke, R Nash, TJ Nielsen, DS Moore, TC Ruiz, CL Schroen, DG Smelser, R Torres, J Vesey, RA AF Bailey, JE Chandler, GA Slutz, SA Bennett, GR Cooper, G Lash, JS Lazier, S Lemke, R Nash, TJ Nielsen, DS Moore, TC Ruiz, CL Schroen, DG Smelser, R Torres, J Vesey, RA TI X-ray imaging measurements of capsule implosions driven by a Z-pinch dynamic hohlraum SO PHYSICAL REVIEW LETTERS LA English DT Article ID INERTIAL-CONFINEMENT-FUSION; PHYSICS; TEMPERATURE AB The radiation and shock generated by impact of an annular tungsten Z-pinch plasma on a 10-mm diam 5-mg/cc CH2 foam are diagnosed with x-ray imaging and power measurements. The radiative shock was virtually unaffected by Z-pinch plasma instabilities. The 5-ns-duration similar to135-eV radiation field imploded a 2.1-mm-diam CH capsule. The measured radiation temperature, shock radius, and capsule radius agreed well with computer simulations, indicating understanding of the main features of a Z-pinch dynamic-hohlraum-driven capsule implosion. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Ktech Corp Inc, Albuquerque, NM USA. Schafer Corp, Livermore, CA 94550 USA. RP Bailey, JE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 15 TC 53 Z9 55 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 AUG 26 PY 2002 VL 89 IS 9 AR 095004 DI 10.1103/PhysRevLett.89.095004 PG 4 WC Physics, Multidisciplinary SC Physics GA 585MR UT WOS:000177529000029 PM 12190409 ER PT J AU Tretiak, S Saxena, A Martin, RL Bishop, AR AF Tretiak, S Saxena, A Martin, RL Bishop, AR TI Conformational dynamics of photoexcited conjugated molecules SO PHYSICAL REVIEW LETTERS LA English DT Article ID STATE ADIABATIC SURFACES; EXCITED-STATE; ELECTRONIC EXCITATIONS; DENSITY-MATRIX; OLIGOMERS; POLYMERS; SPECTRA; EMISSION; PHOTOLUMINESCENCE; ABSORPTION AB Time-dependent photoexcitation and optical spectroscopy of pi-conjugated molecules is described using a new method for the simulation of excited state molecular dynamics in extended molecular systems with sizes up to hundreds of atoms. Applications are made to poly(p-phenylene vinylene) oligomers. Our analysis shows self-trapping of excitations on about six repeat units in the course of photoexcitation relaxation, identifies specific slow (torsion) and fast (bond-stretch) nuclear motions strongly coupled to the electronic degrees of freedom, and predicts spectroscopic signatures of molecular conformations. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM serg@lanl.gov RI Tretiak, Sergei/B-5556-2009 OI Tretiak, Sergei/0000-0001-5547-3647 NR 32 TC 246 Z9 247 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 26 PY 2002 VL 89 IS 9 AR 097402 DI 10.1103/PhysRevLett.89.097402 PG 4 WC Physics, Multidisciplinary SC Physics GA 585MR UT WOS:000177529000057 PM 12190437 ER PT J AU Simonov, YA Tjon, JA AF Simonov, YA Tjon, JA TI The Feynman-Schwinger representation in QCD SO ANNALS OF PHYSICS LA English DT Article ID FIELD-STRENGTH CORRELATIONS; ONE-LOOP; SMALL DISTANCES; PATH-INTEGRALS; GAUGE-THEORIES; HEAVY QUARKS; WILSON LOOP; VACUUM; LIGHT; TEMPERATURE AB The proper time path integral representation is derived explicitly for Green's functions in QCD. After an introductory analysis of perturbative properties, the total gluonic field is separated in a rigorous way into a nonperturbative background and valence gluon part. For nonperturbative contributions the background perturbation theory is used systematically, yielding two types of expansions, illustrated by direct physical applications. As an application, we discuss the collinear singularities in the Feynman-Schwinger representation formalism. Moreover, the generalization to nonzero temperature is made and expressions for partition functions in perturbation theory and nonperturbative background are explicitly written down. (C) 2002 Elsevier Science (USA). C1 ITEM, Res Ctr, Moscow, Russia. Jefferson Lab, Newport News, VA 23606 USA. Univ Utrecht, ITP, NL-3584 CC Utrecht, Netherlands. Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands. Univ Maryland, Dept Phys, College Pk, MD 20742 USA. RP Simonov, YA (reprint author), ITEM, Res Ctr, Moscow, Russia. NR 94 TC 49 Z9 50 U1 0 U2 5 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0003-4916 J9 ANN PHYS-NEW YORK JI Ann. Phys. PD AUG 25 PY 2002 VL 300 IS 1 BP 54 EP 87 DI 10.1006/aphy.2002.6282 PG 34 WC Physics, Multidisciplinary SC Physics GA 592WP UT WOS:000177960100003 ER PT J AU Goto, T Okamura, S McKay, TA Bahcall, NA Annis, J Bernardi, M Brinkmann, J Gomez, PL Hansen, S Kim, RSJ Sekiguchi, M Sheth, RK AF Goto, T Okamura, S McKay, TA Bahcall, NA Annis, J Bernardi, M Brinkmann, J Gomez, PL Hansen, S Kim, RSJ Sekiguchi, M Sheth, RK TI Composite luminosity functions based on the sloan digital sky survey "Cut and Enhance" galaxy cluster catalog SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN LA English DT Article DE galaxies : clusters : general; galaxies : fundamental parameters; galaxies : luminosity function, mass function ID MORPHOLOGY-DENSITY RELATION; SURVEY PHOTOMETRIC SYSTEM; ABELL CLUSTERS; RICH CLUSTERS; DWARF POPULATION; EVOLUTION AB We present here results on the composite luminosity functions (LF) of galaxies in the clusters of galaxies selected from the Cut and Enhance cluster catalog (CE) of the Sloan Digital Sky Survey. We constructed composite LFs in the five SDSS bands, u, g, r, i, and z, using 204 CE clusters ranging from z = 0.02 to z = 0.25. Background and foreground galaxies were subtracted from the LF using an annular region around clusters to take large-scale, galaxy-number-count variances into consideration. A LF of each cluster was weighted according to the richness and number of contributing galaxies to construct the composite LF. Taking advantage of accurate photometry of SDSS, we used photometric redshifts to construct composite luminosity functions and thus study a large number of clusters. The robustness of the weighting scheme was tested using a Monte-Carlo simulation. The best-fit Schechter parameters are (M*, alpha) = (-21.61+/-0.26, -1.40+/-0.11), (-22.01+/-0.11, -1.00+/-0.06), (-22.21+/-0.05, -0.85+/- 0.03), (-22.31+/-0.08, -0.70+/-0.05), and (-21.36+/-0.06, -0.58+/-0.04) in u, g, r, i, and z, respectively. We find that the slope of composite LFs becomes flatter toward a redder color band. Compared with the field LFs of the SDSS, the cluster Us have brighter characteristic magnitude and flatter slopes in the g, r, i, and z bands. These results are consistent with the hypothesis that the cluster LF has two distinct underlying populations; i.e. the bright end of the LF is dominated by bright early types that follow a Gaussian-like luminosity distribution, while the faint-end of the cluster LF is a steep power-law like function dominated by star-forming (bluer) galaxies. We also studied the composite LFs for early-type and late-type galaxies using profile fits, a concentration parameter and u - r color to classify galaxy morphology. A strong dependence of LF on galaxy morphology was found. The faint end slope of the LF is always flatter for early-type galaxies than late-type, regardless of the passband and methodology. These results are consistent with the hypothesis that the cluster regions are dominated by bright elliptical galaxies. This work also provides a good low-redshift benchmark for on-going multi-color photometric studies of high redshift clusters of galaxies using 4-8 m class telescopes. C1 Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2770882, Japan. Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. Univ Tokyo, Dept Astron, Tokyo 1130033, Japan. Univ Tokyo, Sch Sci, Res Ctr Early Univ, Tokyo 1130033, Japan. Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. Princeton Univ Observ, Princeton, NJ 08544 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Apache Point Observ, Sunspot, NM 88349 USA. Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. RP Univ Tokyo, Inst Cosm Ray Res, Kashiwanoha, Kashiwa, Chiba 2770882, Japan. EM tomo@cum.edu RI McKay, Timothy/C-1501-2009 OI McKay, Timothy/0000-0001-9036-6150 NR 42 TC 67 Z9 68 U1 0 U2 0 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0004-6264 EI 2053-051X J9 PUBL ASTRON SOC JPN JI Publ. Astron. Soc. Jpn. PD AUG 25 PY 2002 VL 54 IS 4 BP 515 EP 525 DI 10.1093/pasj/54.4.515 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 590UT UT WOS:000177842700007 ER PT J AU Nakagawa, S Nihei, KT Myer, LR AF Nakagawa, S Nihei, KT Myer, LR TI Elastic wave propagation along a set of parallel fractures SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article DE elastic wave propagation; fracture; fracture-guided waves ID TRANSMISSION; MEDIA; SLIP AB Previous studies on elastic wave propagation in fractured media have demonstrated that a single planar fracture supports fracture interface waves and that two plane parallel fractures support fracture channel waves. Here, the results are presented for plane wave propagation through an infinite number of plane parallel fractures with equal fracture spacing and fracture stiffnesses. Analysis of the dispersion equations for this fractured system demonstrates that these waves exhibit symmetric and antisymmetric particle motions, degenerate to classical Rayleigh-Lamb plate waves when the fractures are completely open, and possess dispersive velocities that are functions of both the fracture stiffness and spacing. Time-frequency analysis performed on a series of laboratory ultrasonic transmission measurements on a fractured rock analog shows good agreement with the theoretical predictions. C1 EO Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP EO Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. EM snakagawa@lbl.gov; ktnihei@lbl.gov; lrmyer@lbl.gov RI Nakagawa, Seiji/F-9080-2015; Nihei, Kurt/K-1239-2016 OI Nakagawa, Seiji/0000-0002-9347-0903; NR 17 TC 4 Z9 4 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 EI 1944-8007 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD AUG 23 PY 2002 VL 29 IS 16 AR 1784 DI 10.1029/2002GL014925 PG 4 WC Geosciences, Multidisciplinary SC Geology GA 622DY UT WOS:000179632300004 ER PT J AU Akal-Strader, A Khare, S Xu, D Naider, F Becker, JM AF Akal-Strader, A Khare, S Xu, D Naider, F Becker, JM TI Residues in the first extracellular loop of a G protein-coupled receptor play a role in signal transduction SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID ALPHA-FACTOR RECEPTOR; CEREVISIAE TRIDECAPEPTIDE PHEROMONE; YEAST SACCHAROMYCES-CEREVISIAE; DOMINANT-NEGATIVE MUTATIONS; SITE-SPECIFIC MUTAGENESIS; AFFINITY HORMONE-BINDING; HUMAN P2Y(1) RECEPTOR; SECONDARY STRUCTURE; TRANSMEMBRANE SEGMENTS; DIRECT IDENTIFICATION AB The Saccharomyces cerevisiae pheromone, alpha-factor (WHWLQLKPGQPMY), and Ste2p, its G protein-coupled receptor, were used as a model system to study ligand-receptor interaction. Cys-scanning mutagenesis on each residue of EL1, the first extracellular loop of Ste2p, was used to generate a library of 36 mutants with a single Cys residue substitution. Mutation of most residues of EL1 had only negligible effects on ligand affinity and biological activity of the mutant receptors. However, five mutants were identified that were either partially (L102C and T114C) or severely (N105C, S108C, and Y111C) compromised in signaling but retained binding affinities similar to those of wild-type receptor. Three-dimensional modeling, secondary structure predictions, and subsequent circular dichroism studies on a synthetic peptide with amino acid sequence corresponding to EL1 suggested the presence of a helix corresponding to EL1 residues 106 to 114 followed by two short beta-strands (residues 126 to 135). The distinctive periodicity of the five residues with a signal-deficient phenotype combined with biophysical studies suggested a functional involvement in receptor activation of a face on a 3(10) helix in this region of EL1. These studies indicate that EL1 plays an important role in the conformational switch that activates the Ste2p receptor to initiate the mating pheromone signal transduction pathway. C1 Univ Tennessee, Dept Biochem Cellular & Mol Biol, Knoxville, TN 37996 USA. CUNY Coll Staten Isl, Dept Chem, Staten Isl, NY 10314 USA. Univ Tennessee, Oak Ridge Natl Lab, Genome Sci & Technol Grad Sch, Oak Ridge, TN 37830 USA. CUNY Grad Sch & Univ Ctr, Program Biochem & Chem, New York, NY 10016 USA. RP Becker, JM (reprint author), Univ Tennessee, Dept Biochem Cellular & Mol Biol, M407 Walters Life Sci Bldg, Knoxville, TN 37996 USA. FU NIGMS NIH HHS [GM 22086, GM 22087] NR 88 TC 27 Z9 27 U1 0 U2 1 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 AUG 23 PY 2002 VL 277 IS 34 BP 30581 EP 30590 DI 10.1074/jbc.M204089200 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 586JA UT WOS:000177579800025 PM 12058045 ER PT J AU Briknarova, K Takayama, S Homma, S Baker, K Cabezas, E Hoyt, DW Li, Z Satterthwait, AC Ely, KR AF Briknarova, K Takayama, S Homma, S Baker, K Cabezas, E Hoyt, DW Li, Z Satterthwait, AC Ely, KR TI BAG4/SODD protein contains a short BAG domain SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID DEATH DOMAINS; BCL-2-BINDING PROTEIN; CELL-DEATH; HSP70/HSC70; BCL-2; HOMOLOGY; SILENCER; COMPLEX; FAMILY; SCYTHE AB BAG (Bcl-2-associated athanogene) proteins are molecular chaperone regulators that affect diverse cellular pathways. All members share a conserved motif, called the BAG domain (BD), which binds to Hsp70/Hsc70 family proteins and modulates their activity. We have determined the solution structure of BD from BAG4/SODD (silencer of death domains) by multidimensional nuclear magnetic resonance methods and compared it to the corresponding domain in BAG1 (Briknarovi, K., Takayama, S., Brive, L., Havert, M. L., Knee, D. A., Velasco, J., Homma, S., Cabezas, E., Stuart, J., Hoyt, D. W., Satterthwait, A. C., Llinas, M., Reed, J. C., and Ely, K. R. (2001) Nat. Struct. Biol. 8, 349-352). The difference between BDs from these two BAG proteins is striking, and the structural comparison defines two subfamilies of mammalian BD-containing proteins. One subfamily includes the closely related BAG3, BAG4, and BAG5 proteins, and the other is represented by BAG1, which contains a structurally and evolutionarily distinct BD. BDs from both BAG1 and BAG4 are three-helix bundles; however, in BAG4, each helix in this bundle is three to four turns shorter than its counterpart in BAG1, which reduces the length of the domain by one-third. BAG4 BD thus represents a prototype of the minimal functional fragment that is capable of binding to Hsc70 and modulating its chaperone activity. C1 Burnham Inst, La Jolla, CA 92037 USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Ely, KR (reprint author), Burnham Inst, La Jolla, CA 92037 USA. RI Hoyt, David/H-6295-2013 FU NCI NIH HHS [CA 67329] NR 28 TC 34 Z9 35 U1 0 U2 5 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 AUG 23 PY 2002 VL 277 IS 34 BP 31172 EP 31178 DI 10.1074/jbc.M202792200 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 586JA UT WOS:000177579800097 PM 12058034 ER PT J AU Carr, HS George, GN Winge, DR AF Carr, HS George, GN Winge, DR TI Yeast Cox11, a protein essential for cytochrome c oxidase assembly, is a Cu(I)-binding protein SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID SACCHAROMYCES-CEREVISIAE; TRANSLATIONAL ACTIVATOR; SUPEROXIDE-DISMUTASE; COPPER-METABOLISM; HEME-O; METALLOCHAPERONE; CLONING; IDENTIFICATION; MEMBRANE; PRODUCT AB Cox11 is a protein essential for respiratory growth and has been implicated in the assembly of the Cu-B site of cytochrome c oxidase. In the present study, we demonstrate that Cox11 is a copper-binding protein. The soluble C-terminal domain of Cox11 forms a dimer that coordinates one Cu(I) per monomer via three thiolate ligands. The two Cu(I) ions in the dimer exist in a binuclear cluster and appear to be ligated by three conserved Cys residues. Mutation of any of these Cys residues reduces Cu(I) binding and confers respiratory incompetence. Cytochrome c oxidase activity is reduced in these mutants. Thus, the residues important for Cu(I) binding correlate with in vivo function, suggesting that Cu(I) binding is important in Cox11 function. C1 Univ Utah, Hlth Sci Ctr, Salt Lake City, UT 84132 USA. Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. RP Winge, DR (reprint author), Univ Utah, Hlth Sci Ctr, Salt Lake City, UT 84132 USA. RI Winge, Dennis/G-3611-2010; George, Graham/E-3290-2013 FU NIEHS NIH HHS [ES 03817] NR 36 TC 95 Z9 98 U1 0 U2 6 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 AUG 23 PY 2002 VL 277 IS 34 BP 31237 EP 31242 DI 10.1074/jbc.M204854200 PG 6 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 586JA UT WOS:000177579800105 PM 12063264 ER PT J AU Michalsky, J Kiedron, P Berndt, J Stoffel, T Myers, D Reda, I Treadwell, J Andreas, A Asano, S Uchiyama, A Yamazaki, A Haeffelin, M Tooman, T McCoy, R Bucholtz, A Bush, BC Pope, SK Leitner, AS Valero, FPJ AF Michalsky, J Kiedron, P Berndt, J Stoffel, T Myers, D Reda, I Treadwell, J Andreas, A Asano, S Uchiyama, A Yamazaki, A Haeffelin, M Tooman, T McCoy, R Bucholtz, A Bush, BC Pope, SK Leitner, AS Valero, FPJ TI Broadband shortwave calibration results from the atmospheric radiation measurement enhanced Shortwave Experiment II SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article DE solar irradiance; calibration; pyranometer; column absorption; uncertainty ID EXPERIMENT ARESE; THERMAL OFFSET; ABSORPTION; AIRCRAFT; CLOUD AB [1] The second ARM (Atmospheric Radiation Measurement) Enhanced Shortwave Experiment (ARESE II) used a single aircraft flying above the north central Oklahoma Southern Great Plains ARM central facility to measure the atmospheric absorption in the column of air between the surface and the Twin Otter altitude ceiling around 7 km on both clear and overcast days. For this experiment, three types of broadband radiometers were used to measure upwelling and downwelling shortwave flux on the aircraft at 7 km. This provided redundancy that was lacking in the first ARESE. Further, all instruments used on the ground and on the aircraft were calibrated on the ground against the same radiation standard. Preflight and postflight comparisons of the broadband instruments used on the aircraft during the flight series with the standard, and comparisons of the ground instruments with the standard during the flights, suggest agreement much better than the target uncertainty of 20 W/m(2) at the 95% confidence level. Comparisons of the standard and the aircraft instruments for low-altitude passes on clear days indicate more uncertainty as expected for a nonstationary platform. The estimated uncertainty in the measured column absorption based on the difference in measured net irradiances at the surface and near 7 km at the 95% confidence level is 20 W/m(2). C1 SUNY Albany, Atmospher Sci Res Ctr, Albany, NY 12203 USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. Tohoku Univ, Grad Sch Sci, Ctr Atmospher & Ocean Studies, Sendai, Miyagi 9808578, Japan. Meteorol Res Inst, Tsukuba, Ibaraki 3050052, Japan. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. Sandia Natl Labs, Livermore, CA 94550 USA. Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA. RP Michalsky, J (reprint author), SUNY Albany, Atmospher Sci Res Ctr, 251 Fuller Rd, Albany, NY 12203 USA. NR 14 TC 7 Z9 7 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0747-7309 J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD AUG 23 PY 2002 VL 107 IS D16 AR 4287 DI 10.1029/2001JD001231 PG 13 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 634DY UT WOS:000180325800003 ER PT J AU Aparicio, S Chapman, J Stupka, E Putnam, N Chia, J Dehal, P Christoffels, A Rash, S Hoon, S Smit, A Gelpke, MDS Roach, J Oh, T Ho, IY Wong, M Detter, C Verhoef, F Predki, P Tay, A Lucas, S Richardson, P Smith, SF Clark, MS Edwards, YJK Doggett, N Zharkikh, A Tavtigian, SV Pruss, D Barnstead, M Evans, C Baden, H Powell, J Glusman, G Rowen, L Hood, L Tan, YH Elgar, G Hawkins, T Venkatesh, B Rokhsar, D Brenner, S AF Aparicio, S Chapman, J Stupka, E Putnam, N Chia, J Dehal, P Christoffels, A Rash, S Hoon, S Smit, A Gelpke, MDS Roach, J Oh, T Ho, IY Wong, M Detter, C Verhoef, F Predki, P Tay, A Lucas, S Richardson, P Smith, SF Clark, MS Edwards, YJK Doggett, N Zharkikh, A Tavtigian, SV Pruss, D Barnstead, M Evans, C Baden, H Powell, J Glusman, G Rowen, L Hood, L Tan, YH Elgar, G Hawkins, T Venkatesh, B Rokhsar, D Brenner, S TI Whole-genome shotgun assembly and analysis of the genome of Fugu rubripes SO SCIENCE LA English DT Article ID RNA-BINDING PROTEIN; PUFFERFISH TETRAODON-NIGROVIRIDIS; JAPANESE PUFFERFISH; VERTEBRATE GENOME; SEQUENCE-ANALYSIS; IMMUNOGLOBULIN SUPERFAMILY; DROSOPHILA-MELANOGASTER; CAENORHABDITIS-ELEGANS; REGULATORY SEQUENCE; GENE SUPERFAMILY AB The compact genome of Fugu rubripes has been sequenced to over 95% coverage, and more than 80% of the assembly is in multigene-sized scaffolds. In this 365-megabase vertebrate genome, repetitive DNA accounts for less than one-sixth of the sequence, and gene loci occupy about one-third of the genome. As with the human genome, gene loci are not evenly distributed, but are clustered into sparse and dense regions. Some giant genes were observed that had average coding sequence sizes but were spread over genomic lengths significantly larger than those of their human orthologs. Although three-quarters of predicted human proteins have a strong match to Fugu, approximately a quarter of the human proteins had highly diverged from or had no pufferfish homologs, highlighting the extent of protein evolution in the 450 million years since teleosts and mammals diverged. Conserved linkages between Fugu and human genes indicate the preservation of chromosomal segments from the common vertebrate ancestor, but with considerable scrambling of gene order. C1 Univ Cambridge, Dept Oncol, Hutchison MRC Res Ctr, Cambridge CB2 2XZ, England. Inst Mol & Cell Biol, Singapore 117609, Singapore. US DOE, Joint Genome Inst, Walnut Creek, CA 94598 USA. Inst Syst Biol, Seattle, WA 98103 USA. MRC UK HGMP Resource Ctr, Cambridge CB10 1SB, England. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Myriad Genet Inc, Salt Lake City, UT 84108 USA. Celera Genom, Rockville, MD 20850 USA. Paradigm Therapeut Ltd, Physiol Lab, Cambridge CB2 3EG, England. Salk Inst Biol Studies, La Jolla, CA 92037 USA. RP Aparicio, S (reprint author), Univ Cambridge, Dept Oncol, Hutchison MRC Res Ctr, Cambridge CB2 2XZ, England. EM saa1000@cam.ac.uk; elia@fugu-sg.org; gelgar@hgmp.mrc.ac.uk; trevor.hawkins@am.amershambiosciences.com; mcbbv@imcb.nus.edu.sg; dsrokhsar@lbl.gov; sbrenner@salk.edu RI Putnam, Nicholas/B-9968-2008; Chia, Jer-Ming/C-9992-2012; ASTAR, IMCB/E-2320-2012; Stupka, Elia/J-6279-2012; Christoffels, Alan/C-3269-2014; Clark, Melody/D-7371-2014; Hoon, Shawn/Q-2472-2016; OI Putnam, Nicholas/0000-0002-1315-782X; Christoffels, Alan/0000-0002-0420-2916; Clark, Melody/0000-0002-3442-3824; Hoon, Shawn/0000-0002-3892-3332; Venkatesh, Byrappa/0000-0003-3620-0277 NR 97 TC 1029 Z9 1071 U1 6 U2 67 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD AUG 23 PY 2002 VL 297 IS 5585 BP 1301 EP 1310 DI 10.1126/science.1072104 PG 10 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 586FL UT WOS:000177573900034 PM 12142439 ER PT J AU Tulk, CA Benmore, CJ Urquidi, J Klug, DD Neuefeind, J Tomberli, B Egelstaff, PA AF Tulk, CA Benmore, CJ Urquidi, J Klug, DD Neuefeind, J Tomberli, B Egelstaff, PA TI Structural studies of several distinct metastable forms of amorphous ice SO SCIENCE LA English DT Article ID HIGH-DENSITY; NEUTRON-SCATTERING; LIQUID WATER; GLASSY WATER; X-RAY; DIFFRACTION; AMORPHIZATION; TRANSITION; PRESSURE; SPECTRUM AB Structural changes during annealing of high-density amorphous ice were studied with both neutron and x-ray diffraction. The first diffraction peak was followed from the high- to the low-density amorphous form. Changes were observed to occur through a series of intermediate forms that appear to be metastable at each anneal temperature. Five distinct amorphous forms were studied with neutron scattering, and many more forms may be possible. Radial distribution functions indicate that the structure evolves systematically between 4 and 8 angstroms. The phase transformations in low-temperature liquid water may be much more complex than currently understood. C1 Argonne Natl Lab, Div Intense Pulsed Neutron Source, Argonne, IL 60439 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Natl Res Council Canada, Ottawa, ON K0A 0R6, Canada. Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. RP Tulk, CA (reprint author), Argonne Natl Lab, Div Intense Pulsed Neutron Source, 9700 S Cass Ave, Argonne, IL 60439 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 189 Z9 193 U1 5 U2 37 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD AUG 23 PY 2002 VL 297 IS 5585 BP 1320 EP 1323 DI 10.1126/science.1074178 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 586FL UT WOS:000177573900038 PM 12193779 ER PT J AU Henson, BF Smilowitz, L Asay, BW Dickson, PM AF Henson, BF Smilowitz, L Asay, BW Dickson, PM TI The beta-delta phase transition in the energetic nitramine octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine: Thermodynamics SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID HMX; DECOMPOSITION AB In this and the accompanying paper [L. Smilowitz , J. Chem. Phys. 117, 3789, 2002] we present a theoretical treatment and experimental study, respectively, of the beta-delta solid state phase transition in the organic nitramine molecule octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX). The transition is thermodynamically first order with a measured latent heat, occurs via nucleation and growth, and exhibits a thermally activated rate of transformation. We construct a two state kinetic model of the system consisting of equilibrium terms first order in the beta or delta mole fraction simulating nucleation, and second order in beta and delta simulating growth. The model has four rate constants, the temperature dependence of which is described by eight parameters. We use the transition state formulation of the rate constants and apply a thermodynamic model of the activated state that associates the difference in activated state free energy in forward and reverse directions with the equilibrium transition free energy, and identifies the activated state of the growth process with a metastable melt. By associating components of the activated state free energy with independently measured thermodynamic energies we reduce the degrees of freedom to three, which we fix initially by comparison with previously published kinetic data. We apply the model to both the beta-delta and delta-beta transformations over a temperature range from 300 to 700 K in order to assess the theoretical validity of the model. The model reproduces the half time of the transition over this entire range, spanning conversion times from 10(6) to 10(-4) s. In the accompanying paper we present an experimental study of the kinetics and mechanism of the phase transition based on second harmonic generation spectroscopy. We use second harmonic generation to verify the nucleation and growth mechanism of the transition and measure the mole fraction change with time over a wide range of temperatures. We use the set of parameters established by theoretical considerations in this paper as an initial parameter set and determine an optimized set by comparison with these data. (C) 2002 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Henson, BF (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 26 TC 65 Z9 67 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 22 PY 2002 VL 117 IS 8 BP 3780 EP 3788 DI 10.1063/1.1495398 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 582KZ UT WOS:000177351100028 ER PT J AU Smilowitz, L Henson, BF Asay, BW Dickson, PM AF Smilowitz, L Henson, BF Asay, BW Dickson, PM TI The beta-delta phase transition in the energetic nitramine-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine: Kinetics SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID 2ND-HARMONIC GENERATION AB In this paper we present second harmonic generation (SHG) experiments designed to confirm the mechanism and quantify the transformation kinetics of the beta-delta solid state phase transition in the organic nitramine molecule octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX). The beta phase adopts a centrosymmetric crystallographic configuration (P2(1)/c) while the delta phase adopts a noncentrosymmetric one (P6(1)(P6(5))). As expected, this results in a very poor generation of SHG intensity from the beta phase, while the delta phase is very efficient, rivaling KH2PO4 in absolute efficiency. SHG thus provides a very high sensitivity zero background probe of the delta phase. We discuss the use of this signal as a quantitative measure of the delta phase mole fraction in ensembles of free HMX crystals and crystals embedded in a visco-elastic polymer matrix. We report imaging experiments where the spatial characteristics of the transformation are shown to be consistent with nucleation from a low density of initial sites, followed by rapid growth. We also report experiments where the total integrated SHG is measured and used to infer the transition progress as a function of time in a series of isothermal experiments on both beta-delta conversion and delta-beta reversion. Additionally, reversibility experiments are reported which are used to verify both the volumetric mechanism of SHG generation in this system and the independence of these results to the internal stress state of the polycrystalline samples. We compare the measured SHG intensity as a function of time for a range of temperatures with predictions of the two state kinetic model presented in the accompanying paper [B. F. Henson , J. Chem. Phys. 117, 3780 (2002)]. We perform a set of parameter optimization calculations based on agreement with the predictions of the model. Optimization does not significantly change the kinetic parameters that are thermodynamically constrained by the model, but there is a distribution of parameters necessary to reproduce the nucleation kinetics observed. In particular, a striking difference in nucleation kinetics is observed between samples of free crystals and crystals embedded in a visco-elastic polymer matrix. (C) 2002 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Smilowitz, L (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM smilo@lanl.gov NR 15 TC 54 Z9 56 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 22 PY 2002 VL 117 IS 8 BP 3789 EP 3798 DI 10.1063/1.1495399 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 582KZ UT WOS:000177351100029 ER PT J AU McLain, SE Benmore, CJ Turner, JFC AF McLain, SE Benmore, CJ Turner, JFC TI The structure of liquid fluorosulfuric acid investigated by neutron diffraction SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MOLECULAR-DYNAMICS; HYDROGEN FLUORIDE; HIGH-PRESSURE; METHANOL; CRYSTAL; WATER; UNDECAFLUORODIANTIMONATE(V); CHEMISTRY; DICATION; EXCHANGE AB The results of an investigation into the liquid structure of fluorosulfuric acid measured using neutron diffraction with isotopic substitution are reported. The first-order neutron difference function is extracted from data recorded at 300 and 193 K from isotopically labeled FSO3H and FSO3D. Analysis of the derived radial distribution functions shows that unique, multisite hydrogen bonding is present in the liquid. These results suggest hydrogen bonding between the hydrogen and fluorine as well as oxygen occurs in the liquid. The fraction of molecules that is hydrogen bound in each way varies with temperature, with the 193 K data showing a more tightly bound system. (C) 2002 American Institute of Physics. C1 Univ Tennessee, Neutron Sci Consortium, Knoxville, TN 37996 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Turner, JFC (reprint author), Univ Tennessee, Neutron Sci Consortium, Knoxville, TN 37996 USA. OI McLain, Sylvia/0000-0002-3347-7759; Benmore, Chris/0000-0001-7007-7749 NR 44 TC 7 Z9 7 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 22 PY 2002 VL 117 IS 8 BP 3816 EP 3821 DI 10.1063/1.1495395 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 582KZ UT WOS:000177351100033 ER PT J AU Cai, J Prausnitz, JM AF Cai, J Prausnitz, JM TI Density distribution for a polymer adsorbed at an oil-water interface SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID CONFORMATION-SPACE RENORMALIZATION; OIL/WATER INTERFACE; ADSORPTION; PROTEIN; MODEL AB The interaction between a polymer segment and an oil-water interface is represented by an asymmetric square-well potential where the well-depth on one side reflects water-polymer and the well depth on the other side reflects oil-polymer interactions. The polymer is represented by a Gaussian chain. The polymer's density distribution is calculated along a coordinate perpendicular to the interface. Results are obtained as a function of the well width, the well depth and its asymmetry and, most important, the polymer's length. For a symmetric well, the distribution shows a strong maximum at the interface provided that the polymer is sufficiently long. For an asymmetric well, the polymer is also strongly adsorbed at the interface provided that the polymer is sufficiently long and provided that the larger well-depth does not exceed a critical value that depends on the smaller well-depth. The calculations are in substantial agreement with experimental results that indicate nearly irreversible adsorption of long-chain molecules at an oil-water interface. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Prausnitz, JM (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. NR 14 TC 6 Z9 6 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 22 PY 2002 VL 117 IS 8 BP 3935 EP 3940 DI 10.1063/1.1494985 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 582KZ UT WOS:000177351100044 ER PT J AU Redington, RL Sams, RL AF Redington, RL Sams, RL TI State-specific spectral doublets in the FTIR spectrum of gaseous tropolone SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID JET-COOLED TROPOLONE; MODE-SELECTIVE PHOTOISOMERIZATION; FLUORESCENCE EXCITATION SPECTRUM; ELECTRONIC-SPECTRA; VIBRATIONAL ANALYSIS; S1-S0 REGION; HYDROGEN; SPECTROSCOPY; 5-HYDROXYTROPOLONE; TRANSITION AB The infrared absorption spectrum of tropolone vapor at 25 degreesC, similar to0.01 Torr, and 32 m path length has been recorded from 960 to about 700 cm(-1) at a resolution of 0.0025 cm(-1). Twenty-nine cold band and hot band spectral tunneling doublets marked by sharp type A or type C Q branch apexes protruding from the congested vibration-contortion-rotation absorption profiles are assigned. Twenty-six vibration-contortion state-specific splittings are estimated for tropolone in its ground electronic state. This number is currently unprecedented in the literature for any sizable molecule. About half of these quasiharmonic vibrational states show an appreciable quenching of tunneling due to increased effective barriers and/or path lengths and, in the case of the nominal COH torsion, the tunneling is reduced to 0.07 of the zero-point (ZP) value of 0.974 cm(-1). The analysis is guided by predictions of the independent {tunneling skeleton}{tunneling H atom} tautomerization model that was previously applied to the vibrational spectrum and tautomerization mechanism of tropolone. The increase of effective tunneling path length by a few percent over the ZP path length is attributed to dynamical complexity arising from an atom-to-atom exchange of unequal vibrational displacements as a part of the tautomerization process. This aspect of tunneling quenching behavior can arise for quasiharmonic vibrations lacking direct contact to the OH...O group. For the case of tropolone, the tautomerization model advocates heavy atom tunneling as equal in importance to H atom tunneling. Heavy atom tunneling is supported by the observation of a (perturbed) spectral tunneling doublet at 754 cm(-1) with the separation 0.80 cm(-1). This doubling of the high frequency component of the previously observed 11 cm(-1) doublet observed using Ne matrix-isolation sampling provides evidence for the "doublet of doublet" quartet structure predicted for the nu(37) nascent skeletal tunneling (contortion) vibration. The compilation of numerous vibrational state-specific tunneling doublings for a 15-atom nonrigid molecule invites further experimental and theoretical research aimed at advancing the understanding of multidimensional intramolecular tunneling dyanmics, vibrational energy redistribution, and unimolecular reaction kinetics. Several strong parallels are seen between the vibrational interactions arising in our studies of the tautomerization of tropolone and those appearing in recent articles discussing possible behaviors in the active sites of enzymatic H tranfer reactions. C1 Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Redington, RL (reprint author), Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA. NR 39 TC 29 Z9 29 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 22 PY 2002 VL 106 IS 33 BP 7494 EP 7511 DI 10.1021/jp0122631 PG 18 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 584NC UT WOS:000177472700004 ER PT J AU Nandi, S Blanksby, SJ Zhang, X Nimlos, MR Dayton, DC Ellison, GB AF Nandi, S Blanksby, SJ Zhang, X Nimlos, MR Dayton, DC Ellison, GB TI Polarized infrared absorption spectrum of matrix-isolated methylperoxyl radicals, CH3OO (X)over-tilde 2A '' SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID DENSITY-FUNCTIONAL THEORY; + OXYGEN MATRICES; ALKYL RADICALS; ULTRAVIOLET PHOTOLYSIS; PEROXY-RADICALS; IR-SPECTRA; GAS-PHASE; ALKYLPEROXY; SPECTROSCOPY; MOLECULES AB We have used a tandem pair of supersonic nozzles to produce clean samples of CH3OO radicals in cryogenic matrices. One hyperthermal nozzle decomposes azomethane (CH3NNCH3) to generate intense pulses of CH3 radicals, While the second nozzle alternately fires a burst Of O-2/Ar at the 20 K matrix. The CH3/O-2/20 K argon radical sandwich acts to produce target methylperoxyl radicals: CH3 + O-2 --> CH3OO. The absorption spectra of the radicals are monitored with a Fourier transform infrared spectrometer. We report 10 of the 12 fundamental infrared bands of the methylperoxyl radical CH3OO, (X) over tilde (2)A", in an argon matrix at 20 K. The experimental frequencies (cm(-1)) and polarizations follow: the a' modes are 3032, 2957, 1448, 1410, 1180, 1109, 90, 492, while the a" modes are 3024 and 1434. We cannot detect the asymmetric CH3 rocking mode, nu(11), nor the torsion, nu(12). The infrared spectra of (CH3OO)-O-18-O-18, (CH3OO)-C-13, and CD3OO have been measured as well in order to determine the isotopic shifts. The experimental frequencies, {nu}, for the methylperoxyl radicals are compared to harmonic frequencies, {omega}, resulting from a UB3LYP/6-311G(d,p) electronic structure calculation. Linear dichroism spectra were measured with photooriented radical samples in order to establish the experimental polarizations of most vibrational bands. The methylperoxyl radical matrix frequencies listed above are within +/-2% of the gas-phase vibrational frequencies. A final set of vibrational frequencies for the H radical, are recommended. See also http://ellison.colorado.edu/methylperoxyl. C1 Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Nimlos, MR (reprint author), Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA. RI Blanksby, Stephen/C-8388-2013 OI Blanksby, Stephen/0000-0002-8560-756X NR 44 TC 40 Z9 41 U1 2 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 22 PY 2002 VL 106 IS 33 BP 7547 EP 7556 DI 10.1021/jp0126816 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 584NC UT WOS:000177472700008 ER PT J AU Cho, CH Urquidi, J Singh, S Park, SC Robinson, GW AF Cho, CH Urquidi, J Singh, S Park, SC Robinson, GW TI Pressure effect on the density of water SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID LIQUID WATER; SUPERCOOLED WATER; PROTEIN-STRUCTURE; MIXTURE-MODEL; DENATURATION; TEMPERATURE; D2O; COMPRESSIBILITY; DIFFRACTION; ANOMALIES AB A simple two-state structural model has been shown capable of quantitatively unifying oxygen-related properties of liquid water. The key variables, which remain invariant among all properties studied, are the pressure-/temperature-dependent densities and fractional compositions of the two contributing structures. In this paper, the pressure dependence of these variables for different temperatures is evaluated from density measurements of water for pressures up to 8 kbar. Data derived earlier from isothermal compressibilities provided only the leading term in the steep pressure dependence of these quantities. This leading term is found here to provide a good. representation of the density of water in the pressure range from I to 1026 bar for 0 less than or equal to t less than or equal to 40 degreesC. A correctly curved pressure dependence is introduced for the accurate description of pressure-dependent properties such as the refractive index of water and the pressure denaturation of proteins, where the experimental pressure range usually exceeds I kbar. C1 Sungkyunkwan Univ, Dept Chem, Suwon 440746, South Korea. Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA. HNC Software Inc, San Diego, CA 92121 USA. Texas Tech Univ, Dept Chem & Biochem, SubPicosecond & Quantum Radiat Lab, Lubbock, TX 79409 USA. RP Cho, CH (reprint author), Sungkyunkwan Univ, Dept Chem, Nat Sci Campus, Suwon 440746, South Korea. EM chcho@chem.skku.ac.kr NR 39 TC 7 Z9 7 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 22 PY 2002 VL 106 IS 33 BP 7557 EP 7561 DI 10.1021/jp0136260 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 584NC UT WOS:000177472700009 ER PT J AU Agarwal, R Rizvi, AH Prall, BS Olsen, JD Hunter, CN Fleming, GR AF Agarwal, R Rizvi, AH Prall, BS Olsen, JD Hunter, CN Fleming, GR TI Nature of disorder and inter-complex energy transfer in LH2 at room temperature: A three pulse photon echo peak shift study SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID PHOTOSYNTHETIC PURPLE BACTERIA; NONLINEAR-OPTICAL RESPONSE; PICOSECOND ABSORPTION-SPECTROSCOPY; LIGHT-HARVESTING COMPLEXES; PIGMENT-PROTEIN COMPLEXES; RHODOBACTER-SPHAEROIDES; RHODOPSEUDOMONAS-ACIDOPHILA; RHODOSPIRILLUM-RUBRUM; B800 BAND; 2 COMPLEXES AB Three Pulse Photon Echo Peak Shift data are reported for the, B850 band of the peripheral light-harvesting complex (LH2) of Rb. sphaeroides at room temperature. The data are obtained for both the detergent solubilized and purified complex, and the native membrane samples containing LH2 as the sole bacteriochlorophyllprotein complex. Both samples reveal an ultrafast decay on a 100-200 fs time scale that is attributed to exciton relaxation dynamics within individual aggregates. The samples in native membranes also contain a similar to5 ps decay, component which is assigned to inter-complex, LH2-LH2 energy transfer. The observation of the 5 ps component in the membrane samples strongly suggests the presence of two levels of energetic disorder in the system. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. Univ Sheffield, Dept Mol Biol & Biotechnol, Sheffield S10 2UH, S Yorkshire, England. RP Fleming, GR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 53 TC 42 Z9 44 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 22 PY 2002 VL 106 IS 33 BP 7573 EP 7578 DI 10.1021/jp014054m PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 584NC UT WOS:000177472700012 ER PT J AU Yang, X Wang, XB Wang, LS AF Yang, X Wang, XB Wang, LS TI Photodetachment of hydrated sulfate doubly charged anions: SO42- (H2O)(n) (n=4-40) SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID REPULSIVE COULOMB BARRIER; GAS-PHASE; PHOTOELECTRON-SPECTROSCOPY; WATER CLUSTERS; AB-INITIO; ELECTRON-ATTACHMENT; AQUEOUS-SOLUTIONS; LIQUID WATER; ION-PAIRS; SOLVATION AB We produced hydrated clusters of the sulfate dianion, SO42-(H2O)(n) (n = 4-40), using electrospray ionization and investigated their energetics and stabilities using photodetachment photoelectron spectroscopy (PES) at four photon energies. The adiabatic electron detachment-energies of the hydrated cluster dianions were observed to with the number of,water, from similar to0.4 eV for n = 3, the smallest number of water to stabilize SO42- in the gas phase, to similar to5.7 eV for n = 40. The PES features of the smaller clusters are similar, all due to the SO42- dianion, which was found to be in the center of the solvated clusters. The intensity of the SO42- solute PES features was observed to decrease with solvent coverage beyond the first solvation shell (n approximate to 12), whereas a strong high binding energy feature due to ionization of the solvent emerged. For n > 30, the solute PES features almost completely disappeared, and the Water feature became dominant. The photon energy dependent studies allowed us to examine the repulsive Coulomb barrier (RCB), which was observed to decrease as the size of the solvated. clusters. increased. The RCB was also evaluated using a simple electrostatic model taking into account Of both Coulomb repulsion and polarization interactions between the departing electron and the remaining singly charged solvated cluster. The RCB for ionization of water was observed to be systematically smaller than that of the solute SO42-. The trapping of the solute photoelectrons by the solvent and the lowering of the RCB for the solvent ionization channel both contributed to the observed spectral evolution. from dominance of the solute at small n to the dominance of the solvent at large n. Extrapolation of the adiabatic detachment energies of SO42- and the ionization thresholds of water in the solvated SO42-(H2O)(n) clusters yielded bulk ionization potentials for aqueous SO42- and water to be 12.3 and 10.05 eV, respectively. C1 Washington State Univ, Dept Phys, Richland, WA 99352 USA. Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. RP Wang, LS (reprint author), Washington State Univ, Dept Phys, 2710 Univ Dr, Richland, WA 99352 USA. NR 69 TC 60 Z9 60 U1 2 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 AUG 22 PY 2002 VL 106 IS 33 BP 7607 EP 7616 DI 10.1021/jp014632z PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 584NC UT WOS:000177472700017 ER PT J AU McCurdy, PR Hess, WP Xantheas, SS AF McCurdy, PR Hess, WP Xantheas, SS TI Nitric acid-water complexes: Theoretical calculations and comparison to experiment SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID ISOLATION INFRARED-SPECTROSCOPY; SET AB-INITIO; PROTON-TRANSFER; GAS-PHASE; CRYSTALLIZATION KINETICS; MOLECULAR MECHANISM; MONTE-CARLO; CLUSTERS; HYDROGEN; SPECTRA AB The formation of HNO3.(H2O)(n) complexes is studied both theoretically and experimentally. First principles electronic structure calculations were used to produce minimum structures and harmonic vibrational frequencies of HNO3.(H2O)(n) and DNO3.(H2O)(n) complexes (n = 0-4). They also provide insight into the ionization of HNO3 in water, predicting that ionization in isolated clusters occurs for n = 4 or larger. Vibrational absorption spectra of matrix isolated nitric acid/water complexes were obtained using an FTIR spectrometer-based instrument. By incrementally increasing the amount of H2O in the matrix, we have been able to study nitric acid/water complexes and the ionization of HNO3. New spectral assignments, the first ones for the n = 2 and 3 complexes, are suggested on the basis of the results of the electronic structure calculations. C1 Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. RP Xantheas, SS (reprint author), Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, POB 999,MS K8-91, Richland, WA 99352 USA. RI Xantheas, Sotiris/L-1239-2015; OI Xantheas, Sotiris/0000-0002-6303-1037 NR 61 TC 58 Z9 58 U1 1 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 22 PY 2002 VL 106 IS 33 BP 7628 EP 7635 DI 10.1021/jp020257e PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 584NC UT WOS:000177472700020 ER PT J AU Miller, AD Gaffney, KJ Liu, SH Szymanski, P Garrett-Roe, S Wong, CM Harris, CB AF Miller, AD Gaffney, KJ Liu, SH Szymanski, P Garrett-Roe, S Wong, CM Harris, CB TI Evolution of a two-dimensional band structure at a self-assembling interface SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID ANGLE-RESOLVED PHOTOEMISSION; MOLECULAR ELECTRONICS; MONOLAYERS; SURFACES; CU(111); AG(111); AU(111) AB Two-photon photoemission is used to investigate the interfacial band structure of the methanethiolate/Ag(111) interface. Two adsorbate-induced electronic states are observed: one occupied, the other an unoccupied excited state. The initially occupied and unoccupied electronic states have effective masses of -2m(e) and 0.5m(e), respectively. At a low coverage of thiolate molecules, the unoccupied state is measured to be nondispersive. At intermediate coverages both nondispersive and dispersive unoccupied electronic states are observed. This coverage dependent evolution can be interpreted as a phase transition from a less dense to a more dense layer configuration. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EO Lawrence Berkeley Natl Lab, Chem Sci Div, Berkeley, CA 94720 USA. RP Harris, CB (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Garrett-Roe, Sean/C-6037-2011 OI Garrett-Roe, Sean/0000-0001-6199-8773 NR 19 TC 34 Z9 34 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 22 PY 2002 VL 106 IS 33 BP 7636 EP 7638 DI 10.1021/jp025555q PG 3 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 584NC UT WOS:000177472700021 ER PT J AU Byrd, EFC Van Voorhis, T Head-Gordon, M AF Byrd, EFC Van Voorhis, T Head-Gordon, M TI Quadratic coupled-cluster doubles: Implementation and assessment of perfect pairing optimized geometries SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID SYMMETRY-BREAKING; CONFIGURATION-INTERACTION; WAVE-FUNCTIONS; BASIS-SETS; MODEL; ORBITALS; PERFORMANCE; HYDROGEN; ENERGIES AB We present orbital amplitude and orbital gradient equations for the quadratic coupled-cluster doubles (QCCD) theory. These expressions are size extensive and can be solved in O(N-6) time with the use of O(N-4) intermediates, which are efficiently defined. The optimized orbital formalism is naturally suited for excitations in only a valence space to describe nondynamical correlation. This also minimizes the additional cost relative to conventional CCD. The resulting valence QCCD is used to study the effects of correlation on equilibrium geometries of a range of small molecules in the perfect pairing active space. This enables comparison with generalized valence bond perfect pairing calculations on the same systems. Additionally, the use of valence QCCD as a supplement to complete active space (CAS) methods is illustrated with calculations of the transition structure for addition of hydrogen to trans-diazene (N2H2). C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Head-Gordon, M (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 33 TC 20 Z9 20 U1 1 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 AUG 22 PY 2002 VL 106 IS 33 BP 8070 EP 8077 DI 10.1021/jp020255u PG 8 WC Chemistry, Physical SC Chemistry GA 584ND UT WOS:000177472800014 ER PT J AU Szpunar, DE Morton, ML Butler, LJ Regan, PM AF Szpunar, DE Morton, ML Butler, LJ Regan, PM TI Primary and secondary dissociation from allyl iodide excited at 193 nm: Centrifugal effects in the unimolecular dissociation of the allyl radical SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID RESONANT MULTIPHOTON IONIZATION; PHOTODISSOCIATION DYNAMICS; ABSORPTION-SPECTRA; SPECTROSCOPY; PRODUCT; STATES; KINETICS; C3H5 AB In the work presented here, we used photofragment translational spectroscopy and H atom Rydberg time-of-flight (HRTOF) spectroscopy to study the primary photofragmentation channels of allyl iodide excited at 193 nm and the ensuing, dissociation of the nascent allyl radicals as a function of their internal energy. Two C-I bond fission channels were found to produce the allyl radical, one channel forming I(P-2(3/2)) and the other forming I(P-2(1/2)). The nascent allyl radicals are dispersed as a function of the translational energy imparted from the photolysis and therefore by their internal energy. Although all of the I(P-2(3/2)) and a portion of the I(P-2(1/2)) channel allyl radical products have enough internal energy to overcome the 60 kcal/mol barrier to form allene + H, the data showed that a substantial fraction of the allyl radicals from the 1(P-2(1/2)) channel that formed with internal energies as high as 15 kcal/mol above the 60 kcal/mol barrier were stable to H atom loss. The stability is due to centrifugal effects caused by significant rotational energy imparted to the allyl radical during photolysis and the small impact parameter and reduced mass characterizing the loss of an H atom from an allyl radical to form allene + H. A photoionization efficiency (PIE) curve identified the major C3H4 secondary dissociation products as allene. Comparison of the mass 40 signal in the TOF spectra at two photoionization energies showed that branching to H + propyne does not occur at near-threshold internal energies, indicating that the experimentally determined allyl --> 2-propenyl radical isomerization barrier, which is lower than recent A initio calculations of the barrier by similar to15 kcal/mol, is far too low. C1 Univ Chicago, James Franck Inst, Chicago, IL 60637 USA. Univ Chicago, Dept Chem, Chicago, IL 60637 USA. Lawerence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Butler, LJ (reprint author), Univ Chicago, James Franck Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA. NR 40 TC 22 Z9 22 U1 2 U2 9 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 AUG 22 PY 2002 VL 106 IS 33 BP 8086 EP 8095 DI 10.1021/jp0256239 PG 10 WC Chemistry, Physical SC Chemistry GA 584ND UT WOS:000177472800016 ER PT J AU Miller, WH AF Miller, WH TI On the relation between the semiclassical initial value representation and an exact quantum expansion in time-dependent coherent states SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID FROZEN GAUSSIAN APPROXIMATION; SEMI-CLASSICAL APPROXIMATION; MOLECULAR-DYNAMICS; WAVE-FUNCTIONS; PROPAGATION; HELP AB The Herman-Kluk (HK) or coherent state initial value representation (IVR) of semiclassical (SC) theory expresses a time-evolving wave function as a sum (integral) over the initial conditions of classically evolved coherent states (aka minimum uncertainty wave packets). An exact expansion of the wave function can also be made in terms of these same coherent states, thinking of them simply as a (time-dependent) basis set. This paper shows the precise set of approximations that are necessary to degenerate the exact expansion into the SC-IVR result. As a byproduct, we also obtain a generalization of the HK "prefactor". C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Kenneth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Miller, WH (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 34 TC 28 Z9 28 U1 0 U2 8 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 AUG 22 PY 2002 VL 106 IS 33 BP 8132 EP 8135 DI 10.1021/jp020500+ PG 4 WC Chemistry, Physical SC Chemistry GA 584ND UT WOS:000177472800022 ER PT J AU Troya, D Lakin, MJ Schatz, GC Harding, LB AF Troya, D Lakin, MJ Schatz, GC Harding, LB TI Quasiclassical trajectory study of energy and angular distributions for the H+CO2 -> OH+CO reaction SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID CORRELATED MOLECULAR CALCULATIONS; SINGLE-COLLISION CONDITIONS; PRODUCT STATE DISTRIBUTION; CO REACTANT COMPLEX; GAUSSIAN-BASIS SETS; REACTION DYNAMICS; PHOTOINITIATED REACTIONS; ROTATIONAL-EXCITATION; MOMENTUM ALIGNMENT; CO2HI COMPLEXES AB An extensive study of the H + CO2 --> OH + CO reaction dynamics has been carried out by means of the quasiclassical trajectory method employing three potential energy surfaces (PESs). The first PES corresponds to the earlier Bradley and Schatz (BS) surface. In the second PES (BSH), the BS surface was modified to include a new term that describes the OH + CO exit channel barrier and van der Waals region, based on high-level ab initio calculations. The third surface (LTSH) corresponds to a modification of the BSH surface where the energies of the various stationary points outside the exit channel region are calibrated from new ab initio calculations. We find that the correction in the exit channel improves the description of the energy partitioning to products, with both BSH and LTSH giving less release to translation and more to CO rotation than BS. These new results are in better agreement with measured product energy partitioning results, and we also find that the LSTH surface gives angular distributions that are in excellent agreement with experiment. Rovibrational state-resolved energy and angular distributions are also discussed. Details of the microscopic reaction mechanism are evaluated on the basis of an analysis of the dynamics as a function of the HOCO complex lifetime, leading to trends that provide insight on the complex-forming reaction fundamentals. In particular we find that the product internal distributions are independent of complex lifetime, while the angular distributions are strongly correlated with lifetime. The often used osculating complex model describes the angular distributions accurately for lifetimes shorter than half the rotational period but becomes inaccurate at longer times. C1 Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Univ Barcelona, Dept Quim Fis, Barcelona 08028, Spain. Univ Barcelona, Ctr Recerca Quim Teor, Barcelona 08028, Spain. RP Schatz, GC (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA. NR 49 TC 25 Z9 25 U1 2 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 AUG 22 PY 2002 VL 106 IS 33 BP 8148 EP 8160 DI 10.1021/jp0256950 PG 13 WC Chemistry, Physical SC Chemistry GA 584ND UT WOS:000177472800025 ER PT J AU Tanner, RE Sasahara, A Liang, Y Altman, EI Onishi, H AF Tanner, RE Sasahara, A Liang, Y Altman, EI Onishi, H TI Formic acid adsorption on anatase TiO2(001)-(1x4) thin films studied by NC-AFM and STM SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID SCANNING-TUNNELING-MICROSCOPY; ATOMIC-FORCE MICROSCOPY; TIO2(110) SURFACE; CARBOXYLIC-ACIDS; TITANIUM-OXIDE; TIO2 ANATASE; METAL-OXIDE; DIOXIDE; DECOMPOSITION; REACTIVITY AB Atomic resolution scanning tunneling microscopy (STM), noncontact atomic force microscopy (NC-AFM), X-ray photoemission spectroscopy (XPS), low-energy electron diffraction (LEED), and formic acid adsorption experiments were used to characterize the (001) surface of anatase TiO2. A combination of NC-AFM and STM imaging was used to distinguish features due to geometrical and electronic effects. The contrast in images of the bare (1 x 4) surface and the formate-covered surface is dominated by the surface topography in both NC-AFM and STM, although electronic effects in the troughs contribute features to the STM images that are absent from NC-AFM images. High-resolution imaging by STM and NC-AFM revealed that the highest point of the ridge of the (1 x 4) structure consists of a single row of atoms. Formate adsorbs at under-coordinated Ti sites in the added rows with a minimum separation of 2a(0) and never adsorbs in the trenches even though the trenches also likely expose under-coordinated Ti atoms. The sticking probability of formate on the anatase TiO2(001)-(1 x 4) surface is near unity initially, and falls dramatically once the saturation coverage of (1)/(8) ML is reached. We show that of the current models for the (1 x 4) reconstruction, an added row plus surface oxygen vacancy model and the recently proposed add-molecule model are in best agreement with all of the data. C1 Yale Univ, Dept Chem Engn, New Haven, CT 06520 USA. Kanagawa Acad Sci & Technol, Surface Chem Lab, Takatsu Ku, Kawasaki, Kanagawa 2130012, Japan. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Motorola Labs, Tempe, AZ USA. RP Tanner, RE (reprint author), Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. EM rob.tanner@physics.org NR 60 TC 59 Z9 60 U1 2 U2 47 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 AUG 22 PY 2002 VL 106 IS 33 BP 8211 EP 8222 DI 10.1021/jp020617y PG 12 WC Chemistry, Physical SC Chemistry GA 584ND UT WOS:000177472800033 ER PT J AU Dohnalek, Z Smith, RS Kay, BD AF Dohnalek, Z Smith, RS Kay, BD TI Adsorption dynamics and desorption kinetics of argon and methane on MgO(100) SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID HELIUM-ATOM SCATTERING; MOLECULAR-BEAM; DISSOCIATIVE CHEMISORPTION; COVERAGE DEPENDENCE; THERMAL-DESORPTION; MGO FILMS; SURFACE; ENERGY; CO; AR AB The adsorption dynamics and desorption kinetics of Ar and CH4 on MgO(100) are studied using a combination of molecular beam scattering and temperature-programmed desorption (TPD). Both Ar and CH4 exhibit an initial trapping probability that decreases dramatically with increasing kinetic energy and is independent of incident angle indicating a barrierless process obeying total energy scaling. The trapping probability for both systems increases roughly linearly with increasing adsorbate coverage in the first layer. Analysis of the TPD spectra yields desorption energies of 8.5 and 13 kJ/mol for Ar and CH4, respectively. C1 Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. RP Kay, BD (reprint author), Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, 902 Battelle Blvd,POB 999,MSN K8-88, Richland, WA 99352 USA. EM Bruce.Kay@pnl.gov RI Smith, Scott/G-2310-2015; OI Smith, Scott/0000-0002-7145-1963; Dohnalek, Zdenek/0000-0002-5999-7867 NR 58 TC 20 Z9 20 U1 1 U2 21 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 AUG 22 PY 2002 VL 106 IS 33 BP 8360 EP 8366 DI 10.1021/jp025890e PG 7 WC Chemistry, Physical SC Chemistry GA 584ND UT WOS:000177472800053 ER PT J AU Goj, A Sholl, DS Akten, ED Kohen, D AF Goj, A Sholl, DS Akten, ED Kohen, D TI Atomistic simulations of CO2 and N-2 adsorption in silica zeolites: The impact of pore size and shape SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID MONTE-CARLO SIMULATIONS; MOLECULAR SIMULATIONS; PREDICTION; MIXTURES; ALKANES; CARBON; EQUILIBRIA; DYNAMICS; H-ZSM-5; CATIONS AB Adsorption of CO2 and N-2, both as single components and as binary mixtures, in three zeolites with identical chemical composition but differing pore structures (silicalite, ITQ-3, and ITQ-7) was studied using atomistic simulations. These three zeolites preferentially adsorb CO2 over N-2 during both single-component and mixture adsorption. The CO2/N-2 selectivities observed in the three siliceous zeolites vary strongly as the adsorbent's crystal structure changes, with the selectivity in ITQ-3 being the largest. Our studies indicate that the different electric, fields present inside zeolites with different crystal structures but identical chemical composition play an important role in the observed adsorption capacities and selectivities. The accuracy of the ideal absorbed solution theory in predicting the behavior of CO2/N-2 mixtures in silica zeolites based on single component adsorption data was also tested; this theory performs quite accurately for these adsorbed mixtures. C1 Carleton Coll, Dept Chem, Northfield, MN 55057 USA. Smith Coll, Dept Chem, Northampton, MA 01063 USA. Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA. Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Kohen, D (reprint author), Carleton Coll, Dept Chem, Northfield, MN 55057 USA. NR 40 TC 149 Z9 155 U1 1 U2 34 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 AUG 22 PY 2002 VL 106 IS 33 BP 8367 EP 8375 DI 10.1021/jp025895b PG 9 WC Chemistry, Physical SC Chemistry GA 584ND UT WOS:000177472800054 ER PT J AU Markel, T Brooker, A Hendricks, I Johnson, V Kelly, K Kramer, B O'Keefe, M Sprik, S Wipke, K AF Markel, T Brooker, A Hendricks, I Johnson, V Kelly, K Kramer, B O'Keefe, M Sprik, S Wipke, K TI ADVISOR: a systems analysis tool for advanced vehicle modeling SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE ADVISOR; systems analysis; vehicle modeling; vehicle simulation; hybrid electric vehicle; fuel cell; battery; energy storage AB This paper provides an overview of Advanced Vehicle Simulator (ADVISOR)-the US Department of Energy's (DOE's) ADVISOR written in the MATLAB/Simulink environment and developed by the National Renewable Energy Laboratory. ADVISOR provides the vehicle engineering community with an easy-to-use, flexible, yet robust and supported analysis package for advanced vehicle modeling. It is primarily used to quantify the fuel economy, the performance, and the emissions of vehicles that use alternative technologies including fuel cells, batteries, electric motors, and internal combustion engines in hybrid (i.e. multiple power sources) configurations. It excels at quantifying the relative change that can be expected due to the implementation of technology compared to a baseline scenario. ADVISOR's capabilities and limitations are presented and the power source models that are included in ADVISOR are discussed. Finally, several applications of the tool are presented to highlight ADVISOR's functionality. The content of this paper is based on a presentation made at the 'Development of Advanced Battery Engineering Models' workshop held in Crystal City, Virginia in August 2001. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Markel, T (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 8 TC 259 Z9 279 U1 2 U2 36 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 AUG 22 PY 2002 VL 110 IS 2 BP 255 EP 266 AR PII S0378-7753(02)00189-1 DI 10.1016/S0378-7753(02)00189-1 PG 12 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100002 ER PT J AU Dees, DW Battaglia, VS Belanger, A AF Dees, DW Battaglia, VS Belanger, A TI Electrochemical modeling of lithium polymer batteries SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE lithium; battery; electrochemical; modeling; polymer ID ELECTROLYTES; TRANSPORT AB An electrochemical model for lithium polymer cells was developed and a parameter set for the model was measured using a series of laboratory experiments. Examples are supplied to demonstrate the capabilities of the electrochemical model to obtain the concentration, current, and potential distributions in lithium polymer cells under complex cycling protocols. The modeling results are used to identify processes that limit cell performance and for optimizing cell design. Extension of the electrochemical model to examine two-dimensional studies is also described. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA. Inst Rech Hydro Quebec, IREQ, Direct Principale Rech & Dev, Varennes, PQ J3X 1S1, Canada. RP Dees, DW (reprint author), Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 13 TC 32 Z9 35 U1 3 U2 23 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 AUG 22 PY 2002 VL 110 IS 2 BP 310 EP 320 AR PII S0378-7753(02)00193-3 DI 10.1016/S0378-7753(02)00193-3 PG 11 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100006 ER PT J AU Johnson, VH AF Johnson, VH TI Battery performance models in ADVISOR SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE battery model; lithium ion; nickel-metal hydride; lead acid; vehicle simulations AB This paper summarizes battery modeling capabilities in ADVISOR-the National Renewable Energy Laboratory's advanced vehicle simulator written in the Matlab/Simulink environment. ADVISOR's Matlab-oriented battery models consist of the following: (1) an internal resistance model, (2) a resistance-capacitance (RC) model, (3) a PNGV capacitance model, (4) a neural network (nnet) lead acid model, and (5) a fundamental lead acid battery model. For the models, the electric schematics (where applicable), thermal models, accuracy, existing datasets, and sample validation plots are presented. A brief summary of ADVISOR's capabilities for co-simulation with Saber is presented, which links ADVISOR with Saber's lead acid battery model. The models outlined in this paper were presented at the workshop on 'Development of Advanced Battery Engineering Models' in August 2001. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Johnson, VH (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 10 TC 179 Z9 210 U1 5 U2 49 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 AUG 22 PY 2002 VL 110 IS 2 BP 321 EP 329 AR PII S0378-7753(02)00194-5 DI 10.1016/S0378-7753(02)00194-5 PG 9 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100007 ER PT J AU Nelson, P Dees, D Amine, K Henriksen, G AF Nelson, P Dees, D Amine, K Henriksen, G TI Modeling thermal management of lithium-ion PNGV batteries SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE lithium-ion; battery modeling; thermal modeling; lumped-parameter model; PNGV battery; hybrid electric vehicle AB Batteries were designed with the aid of a computer modeling program to study the requirements of the thermal control system for meeting the goals set by the Partnership for a New Generation of Vehicles (PNGV). The battery designs were based upon the lithium-ion cell composition designated Gen-2 in the US Department of Energy Advanced Technology Development Program. The worst-case cooling requirement that would occur during prolonged aggressive driving was estimated to be 250 Wor about 5 W per cell for a 48-cell battery. Rapid heating of the battery from a very low startup temperature is more difficult than cooling during driving. A dielectric transformer fluid is superior to air for both heating and cooling the battery. A dedicated refrigeration system for cooling the battery coolant would be helpful in maintaining low temperature during driving. The use of ample insulation would effectively slow the battery temperature rise when parking the vehicle in warm weather. Operating the battery at 10 degreesC during the first several years when the battery has excess power would extend the battery life. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Argonne Natl Lab, Electrochem Technol Program, Argonne, IL 60439 USA. RP Nelson, P (reprint author), Argonne Natl Lab, Electrochem Technol Program, Bldg 205,9700 S Cass Ave, Argonne, IL 60439 USA. RI Amine, Khalil/K-9344-2013 NR 4 TC 49 Z9 51 U1 4 U2 45 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 AUG 22 PY 2002 VL 110 IS 2 BP 349 EP 356 AR PII S0378-7753(02)00197-0 DI 10.1016/S0378-7753(02)00197-0 PG 8 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100010 ER PT J AU Doughty, DH Butler, PC Jungst, RG Roth, EP AF Doughty, DH Butler, PC Jungst, RG Roth, EP TI Lithium battery thermal models SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE thermal battery; lithium-ion cell; calorimeter; thermal model; electrochemical model; abuse tolerance; safety ID ACCELERATING RATE CALORIMETRY; INTERCALATED GRAPHITE; STABILITY AB Thermal characteristics and thermal behavior of lithium batteries are important both for the batteries meeting operating life requirements and for safety considerations. Sandia National Laboratories has a broad-based program that includes analysis, engineering and model development. We have determined thermal properties of lithium batteries using a variety of calorimetric methods for many years. We developed the capability to model temperature gradients and cooling rates of high-temperature primary lithium thermal batteries several years ago. Work is now under way to characterize the response of ambient-temperature rechargeable lithium-ion batteries to thermal abuse. Once the self-heating rates of lithium cells have been established over a range of temperatures, the thermal response can be estimated under a variety of conditions. We have extended this process to isolate the behavior of individual battery components and have begun to understand the chemical nature of the species responsible for heat evolution within the cells. This enhanced level of understanding will enable more accurate modeling of cell thermal behavior and will allow model-based design of safer, more abuse-tolerant lithium batteries for electric vehicles (EVs) and hybrid electric vehicles (HEVs) in the future. Progress toward this goal and key information still needed to reach it are discussed. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Power Sources Technol Grp, Albuquerque, NM 87185 USA. RP Doughty, DH (reprint author), Sandia Natl Labs, Power Sources Technol Grp, POB 5800, Albuquerque, NM 87185 USA. NR 11 TC 37 Z9 39 U1 2 U2 48 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 AUG 22 PY 2002 VL 110 IS 2 BP 357 EP 363 AR PII S0378-7753(02)00198-2 DI 10.1016/S0378-7753(02)00198-2 PG 7 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100011 ER PT J AU Pesaran, AA AF Pesaran, AA TI Battery thermal models for hybrid vehicle simulations SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE battery thermal model; battery thermal management; vehicle simulations AB This paper summarizes battery thermal modeling capabilities for: (1) an advanced vehicle simulator (ADVISOR); and (2) battery module and pack thermal design. The National Renewable Energy Laboratory's (NREL's) ADVISOR is developed in the Matlab/Simulink environment. There are several battery models in ADVISOR for various chemistry types. Each one of these models requires a thermal model to predict the temperature change that could affect battery performance parameters, such as resistance, capacity and state of charges. A lumped capacitance battery thermal model in the Matlab/Simulink environment was developed that included the ADVISOR battery performance models. For thermal evaluation and design of battery modules and packs, NREL has been using various computer aided engineering tools including commercial finite element analysis software. This paper will discuss the thermal ADVISOR battery model and its results, along with the results of finite element modeling that were presented at the workshop on "Development of Advanced Battery Engineering Models" in August 2001. Published by Elsevier Science B.V. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Pesaran, AA (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 4 TC 127 Z9 143 U1 5 U2 47 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 AUG 22 PY 2002 VL 110 IS 2 BP 377 EP 382 AR PII S0378-7753(02)00200-8 DI 10.1016/S0378-7753(02)00200-8 PG 6 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100013 ER PT J AU Kerr, JB Sloop, SE Liu, G Han, YB Hou, J Wang, S AF Kerr, JB Sloop, SE Liu, G Han, YB Hou, J Wang, S TI From molecular models to system analysis for lithium battery electrolytes SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE lithium battery; polymer electrolytes; SEI layer; molecular models; system models; rheological models; ion solvation; mobility ID CERAMIC COMPOSITE ELECTROLYTES; SOLID POLYMER ELECTROLYTE; TRANSPORT-PROPERTIES; POLYETHYLENE OXIDE; FILLED POLYMERS; RANDOM IONOMERS; PERFORMANCE; SIMULATION; DESIGN; INTERFACES AB The behavior of polymer electrolytes in lithium batteries is reviewed in the context of molecular scale models as well as on the system scale. It is shown how the molecular structure of the electrolyte strongly influences ion transport through the polymer as well as across the interfaces and determines the values of a number of parameters needed for system models that can predict the performance of the battery (e.g. kappa, D, t(0)(+) and i(0)). The interaction of the electrolyte with the electrodes not only leads to transfer of the lithium ion across the interface but also to side reactions that profoundly influence the calendar and life cycle of the battery. Typically these electrochemically induced side reactions generate the SEI layer, but inherent instability of the bulk electrolyte may also play a role in the formation of surface layers. These various reactions can lead to changes in the mechanical properties of the separator and electrode structure that promote life-limiting phenomena such as dendrite growth, passivation and morphology changes. The rheological model of Eisenberg is drawn upon to show how the interactions of the electrolyte with surfaces can lead to distinct changes in mechanical and transport properties that may limit the battery performance and lead to diminished performance with time. The molecular level models may be combined with the rheological models to provide workable models of the interfaces and bulk electrolyte dynamics that in turn can be used to provide a more accurate level of performance prediction from the system models. This connects molecular structure with battery performance and guides the design and synthesis of new and better materials (C) 2002 Elsevier Science B.V. All rights reserved. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Kerr, JB (reprint author), Lawrence Berkeley Natl Lab, MS 62-203,1 Cyclotron Rd, Berkeley, CA 94720 USA. EM jbkerr@lbl.gov NR 61 TC 27 Z9 27 U1 3 U2 50 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 AUG 22 PY 2002 VL 110 IS 2 BP 389 EP 400 AR PII S0378-7753(02)00202-1 DI 10.1016/S0378-7753(02)00202-1 PG 12 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100015 ER PT J AU Redfern, PC Curtiss, LA AF Redfern, PC Curtiss, LA TI Quantum chemical studies of Li+ cation binding to polyalkyloxides SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE ab initio molecular orbital theory; polyalkyloxides; lithium polymer electrolytes; lithium batteries ID BOND-DISSOCIATION ENERGIES; AB-INITIO CALCULATIONS; EQUILIBRIUM STRUCTURES; POLYMER ELECTROLYTES; ETHER COMPLEXES; GAS-PHASE; DIGLYME; PEO; 1,2-DIMETHOXYETHANE; CONFORMATIONS AB A quantum chemical study of the binding of Li+ cation to polyalkyloxides has been carried out. The lithium cation interaction with three polyalkyloxides (polyethylene oxide (PEO), polytrimethylene oxide (PTMO), and polypropylene oxide (PPO)) has been investigated using ab initio molecular orbital theory at the HF/6-31G* level with molecular models for the polymers. Coordination by one to six oxygens was considered. In addition, higher level calculations were carried out using G3(MP2) theory for coordination of Li+ by one oxygen. For coordination of lithium by one oxygen, the binding energy ordering is PTMO > PPO > PEO, with PTMO having the largest lithium cation affinity. The same ordering is found for larger coordination numbers with the exception of coordination by six oxygens, where the ordering changes due to the steric interactions. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Curtiss, LA (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 25 TC 25 Z9 25 U1 1 U2 9 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 AUG 22 PY 2002 VL 110 IS 2 BP 401 EP 405 AR PII S0378-7753(02)00203-3 DI 10.1016/S0378-7753(02)00203-3 PG 5 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100016 ER PT J AU Benedek, R Thackeray, MM AF Benedek, R Thackeray, MM TI Lithium reactions with intermetallic-compound electrodes SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VA DE intermetallic compound; solid state reaction; electrochemical potential; insertion kinetics; first principles theory ID TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; SITU X-RAY; ION BATTERIES; NEGATIVE ELECTRODE; ELECTROCHEMICAL REACTION; INSERTION ELECTRODES; LI; ALLOYS; ANODES AB Intermetallic compounds are under investigation as possible anode materials in lithium batteries. The compounds on which the Argonne National Laboratory group has primarily focused were selected on the basis of structural compatibility between host and product (lithiated) phases. In this presentation, we discuss the additional insights into the behavior of intermetallic-compound anodes that are available from materials modeling. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM benedek@anl.gov NR 37 TC 82 Z9 86 U1 2 U2 21 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 AUG 22 PY 2002 VL 110 IS 2 BP 406 EP 411 AR PII S0378-7753(02)00204-5 DI 10.1016/S0378-7753(02)00204-5 PG 6 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100017 ER PT J AU Kinoshita, K Zaghib, K AF Kinoshita, K Zaghib, K TI Negative electrodes for Li-ion batteries SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE carbon; lithium intercalation; reversible capacity; irreversible capacity ID IRREVERSIBLE CAPACITY LOSS; RECHARGEABLE BATTERIES; MESOCARBON MICROBEADS; LITHIUM INTERCALATION; DISORDERED CARBONS; HARD CARBONS; ACTIVE-SITES; GRAPHITE; MECHANISM; MODEL AB Graphitized carbons have played a key role in the successful commercialization of Li-ion batteries. The physicochemical properties of carbon cover a wide ranged therefore, identifying the optimum active electrode material can be time consuming. The significant physical properties of negative electrodes for Li-ion batteries are summarized. and the relationship of these properties to their electrochemical performance in non-aqueous electrolytes, are discussed in this paper. (C) 2002 Published by Elsevier Science B.V. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Inst Rech Hydro Quebec, Varennes, PQ J3X 1S1, Canada. RP Kinoshita, K (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 44 TC 23 Z9 23 U1 1 U2 18 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 AUG 22 PY 2002 VL 110 IS 2 BP 416 EP 423 AR PII S0378-7753(02)00206-9 DI 10.1016/S0378-7753(02)00206-9 PG 8 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100019 ER PT J AU Roberts, GA Cairns, EJ Reimer, JA AF Roberts, GA Cairns, EJ Reimer, JA TI Magnesium silicide as a negative electrode material for lithium-ion batteries SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE magnesium silicide; Mg2Si; anode materials; lithium batteries ID INSERTION; MECHANISM; MG2SI AB Mg2Si was synthesized by mechanically activated annealing and evaluated as a negative electrode material A maximum discharge capacity of 830 mAh/g was observed by cycling over a wide voltage window of 5-650 mV versus L-1, but capacity fade was rapid. Cycling over the range 50-225 mV versus Li produced a stable discharge capacity of approximately 100 mAh/g. X-ray diffraction (XRD) experiments showed that lithium insertion converts Mg2Si into Li2MgSi after lithium intercalation into Mg2Si. Electrochemical evidence of Li-Si reactions indicated that the Li2MgSi structure can be converted to binary lithium alloys with extensive charging. Published by Elsevier Science B.V. C1 Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. RP Roberts, GA (reprint author), Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RI Cairns, Elton/E-8873-2012 OI Cairns, Elton/0000-0002-1179-7591 NR 7 TC 79 Z9 95 U1 9 U2 83 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 AUG 22 PY 2002 VL 110 IS 2 BP 424 EP 429 AR PII S0378-7753(02)00207-0 DI 10.1016/S0378-7753(02)00207-0 PG 6 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100020 ER PT J AU Urbina, A Paez, TL Jungst, RG Liaw, BY AF Urbina, A Paez, TL Jungst, RG Liaw, BY TI Inductive modeling of lithium-ion cells SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE lithium ion; inductive modeling; artificial neural networks; singular value decomposition AB Sandia National Laboratories has conducted a sequence of studies on the performance of lithium ion and other types of electrochemical cells using inductive models. The objectives of some of these investigations are: (1) to develop procedures to rapidly determine performance degradation rates while these cells undergo life tests; (2) to model cell voltage and capacity in order to simulate cell output under variable load and temperature conditions; (3) to model rechargeable battery degradation under conditions of cyclic charge/discharge, and many others. Among the uses for the models are: (1) to enable efficient predictions of battery life; (2) to characterize system behavior. Inductive models seek to characterize system behavior using experimentally or analytically obtained data in an efficient and robust framework that does not require phenomenological development. There are certain advantages to this. Among these advantages is the ability to avoid making measurements of hard to determine physical parameters or having to understand cell processes sufficiently to write mathematical functions describing their behavior. We have used artificial neural networks (ANNs) for inductive modeling, along with ancillary mathematical tools to improve their accuracy. This paper summarizes efforts to use inductive tools for cell and battery modeling. Examples of numerical results are presented. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Sandia Natl Labs, Lithium Battery R&D Dept, Albuquerque, NM 87185 USA. RP Paez, TL (reprint author), Sandia Natl Labs, Lithium Battery R&D Dept, 9133,Mail Stop 0557, Albuquerque, NM 87185 USA. NR 4 TC 11 Z9 11 U1 0 U2 9 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 AUG 22 PY 2002 VL 110 IS 2 BP 430 EP 436 AR PII S0378-7753(02)00208-2 DI 10.1016/S0378-7753(02)00208-2 PG 7 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100021 ER PT J AU Nelson, P Bloom, I Amine, K Henriksen, G AF Nelson, P Bloom, I Amine, K Henriksen, G TI Design modeling of lithium-ion battery performance SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE lithium-ion; battery modeling; cell testing; lumped-parameter model; PNGV battery; hybrid electric vehicle AB A computer design modeling technique has been developed for lithium-ion batteries to assist in setting goals for cell components, assessing materials requirements, and evaluating thermal management strategies. In this study, the input data for the model included design criteria from Quallion, LLC for Gen-2 18650 cells, which were used to test the accuracy of the dimensional modeling. Performance measurements on these cells were done at the electrochemical analysis and diagnostics laboratory (EADL) at Argonne National Laboratory. The impedance and capacity related criteria were calculated from the EADL measurements. Five batteries were designed for which the number of windings around the cell core was increased for each succeeding battery to study the effect of this variable upon the dimensions, weight, and performance of the batteries. The lumped-parameter battery model values were calculated for these batteries from the laboratory results, with adjustments for the current collection resistance calculated for the individual batteries. (C) 2002 Published by Elsevier Science B.V. C1 Argonne Natl Lab, Electrochem Technol Program, Argonne, IL 60439 USA. RP Nelson, P (reprint author), Argonne Natl Lab, Electrochem Technol Program, Bldg 205,9700 S Cass Ave, Argonne, IL 60439 USA. RI Amine, Khalil/K-9344-2013 NR 3 TC 35 Z9 36 U1 3 U2 35 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 AUG 22 PY 2002 VL 110 IS 2 BP 437 EP 444 AR PII S0378-7753(02)00209-4 PG 8 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100022 ER PT J AU Wright, RB Motloch, CG Belt, JR Christophersen, JP Ho, CD Richardson, RA Bloom, I Jones, SA Battaglia, VS Henriksen, GL Unkelhaeuser, T Ingersoll, D Case, HL Rogers, SA Sutula, RA AF Wright, RB Motloch, CG Belt, JR Christophersen, JP Ho, CD Richardson, RA Bloom, I Jones, SA Battaglia, VS Henriksen, GL Unkelhaeuser, T Ingersoll, D Case, HL Rogers, SA Sutula, RA TI Calendar- and cycle-life studies of advanced technology development program generation 1 lithium-ion batteries SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT Workshop on Development of Advanced Battery Engineering Models CY AUG 14-16, 2001 CL ALEXANDRIA, VIRGINIA DE lithium-ion batteries; battery calendar-life; battery cycle-life; battery modeling; arrhenius kinetics ID RECHARGEABLE BATTERIES; CAPACITY FADE; ELECTRODES; IMPEDANCE; LICOO2; CELLS AB This paper presents the test results and life modeling of special calendar- and cycle-life tests conducted on 18650-size generation I (Gen 1) lithium-ion battery cells (nominal capacity of 0.9 Ah; 3.0-4.1 V rating) developed to establish a baseline chemistry and performance for the Department of Energy sponsored advanced technology development (ATD) program. Electrical performance testing was conducted at the Argonne National Laboratory (ANL), Sandia National Laboratory (SNL) and the Idaho National Engineering and Environmental Laboratory (INEEL). As part of the electrical performance testing, a new calendar-life test protocol was used. The test consisted of a once per day discharge and charge pulse designed to have minimal impact on the cell yet establish its performance over a period of time such that the calendar-life of the cell could be determined. The calendar-life test matrix included two states-of-charge (SOCs) (i.e. 60 and 80%) and four test temperatures (40, 50, 60 and 70 degreesC). Discharge and regen resistances were calculated from the test data. Results indicate that both the discharge and regen resistances increased non-linearly as a function of the test time. The magnitude of the resistances depended on the temperature and SOC at which the test was conducted. Both resistances had a non-linear increase with respect to time at test temperature. The discharge resistances are greater than the regen resistances at all of the test temperatures of 40, 50, 60 and 70 degreesC. For both the discharge and regen resistances, generally the higher the test temperature, the lower the resistance. The measured resistances were then used to develop an empirical model that was used to predict the calendar-life of the cells. This model accounted for the time, temperature and SOC of the batteries during the calendar-life test. The functional form of the model is given by: R(t, T, SOC) = A(T, SOC)F(t) + B(T, SOC), where I is the time at test temperature, T the test temperature and SOC the SOC of the cell at the start of the test. A(T, SOC) and B(T, SOC) are assumed to be functions of the temperature and SOC; F is assumed to only be a function of the time at test temperature. Using curve-fitting techniques for a number of time-dependent functions, it was found that both the discharge and regen resistances were best correlated with F(t) having a square-root of test time dependence. These results led to the relationship for the discharge and regen resistances: R(t, T, SOC) = A(T, SoC)t(1/2) + B(T, SOC). The square-root of time dependence can be accounted for by either a one-dimensional diffusion type of mechanism, presumably of the lithium-ions or by a parabolic growth mechanism for the growth of a thin-film solid electrolyte interface (SEI) layer on the anode and/or cathode. The temperature dependence of the resistance was then investigated using various model fits to the functions A(T, SOC) and B(T, SOC). The results of this exercise lead to a functional form for the temperature dependence of the fitting functions having an Arrhenius-like form: A (T, SOC) = a(SOC) {exp[b(SOC)/T]) and B(T, SOC) = c(SOC) {exp[d(SOC)/T]}, where a and c are constants, and b and d are related to activation energy (E-b and E-d) by using the gas constant (R) such that b = E-b/R and d = E-d/R. The functional form, therefore, for the discharge and regen resistances, including the SOC, is then: R(t, T, SOC) = a(SOC){exp[b(SOC)/T]}t(1/2) + c(SOC){exp[d(SOC)/T]}. The a, b, c and d parameters are explicitly shown as being functions of the SOC. However, due to the lack of testing at SOC values other than 60 and 80% SOC, the exact form of the SOC dependence could not be determined from the experimental data. The values of a, b, c and d were determined, thus permitting the function R(t, T, SOC) to be used to correlate the discharge and regen data and to predict what the resistances would be at different test times and temperatures. This paper also presents, discusses and models the results of a special cycle-life test conducted for a period of time at specified temperatures of 40, 50, 60 and 70 degreesC. This test, consisting of specified discharge and charge protocols, was designed to establish the cycle-life performance of the cells over a time interval such that their cycle-life could be determined. The cycle-life test was conducted at 60% SOC, with SOC swings of Delta3, Delta6 and Delta9%. During the cycle-life test, the discharge and regen resistances were determined after every 100 test cycles. The results of the cycle-life testing indicate that both the discharge and regen resistances increased non-linearly as a function of the test time at each Delta% SOC test. The magnitude of the resistances and the rate at which they changed depended on the temperature and Delta% SOC at which the test was conducted. Both resistances had a non-linear increase with respect to time at test temperature, i.e. as the number of test cycles increased the discharge and regen resistances increased also. For a given Delta% SOC test, the discharge resistances are greater than the regen resistances at all of the test temperatures of 40, 50, 60 and 70 degreesC. For both the dis At each of the four test temperatures, the magnitude of the discharge and regen resistances was generally in the following order: Delta3% SOC > Delta9% SOC > Delta6% SOC, but the ordering was dependent on test time. A model was also developed to account for the time, temperature, SOC and Delta% SOC of the batteries during the cycle-life test. The functional form of the model is given by R(t, T, SOC, Delta% SOC) = A(T, SOC, Delta% SOC)F(t) + B(T, SOC, Delta% SOC) where t is the time at test temperature, T the test temperature. SOC the SOC of the cell at the start and end of the test and Delta% SOC the SOC swing during the test. A(T, SOC, Delta% SOC) and B(T, SOC, Delta% SOC) are assumed to be functions of the test temperature, SOC and Delta% SOC swing. F(t) is assumed to only be a function of the test time at test temperature. Using curve-fitting techniques for a number of time-dependent functions, it was found that both the discharge and regen resistances were best correlated by a square-root of test time dependence. These results led to the relationship for the discharge and regen resistances having the form R(t, T, SOC, Delta% SOC) = A(T, SOC, Delta% SOC)t(1/2) + B(T, SOC, Delta% SOC). This model is essentially the same as used to analyze the calendar-life test data. The temperature dependence of the resistance was then investigated using various model fits to the functions A(T) and B(T). The results of this exercise lead to a functional form for the functions having again an Arrhenius-like form: A (T) = a[exp(b/T)] and B(T) = c[exp(d/T)] where a and c are constants, and b and d are related to activation energies. The functional form, therefore, for the discharge and regen resistances including the SOC and Delta% SOC is R(t, T, SOC, A% SOC) = a(SOC, Delta% SOC) {exp[b(SOC, Delta% SoC)/T]}t(1/2) + c(SOC, Delta% SOC){exp[d(SOC, Delta% SOC)/T]). The a, b, c and d parameters are explicitly shown as being functions of the SOC and the Delta% SOC. However, due to the lack of testing at SOC values other than 60% SOC, the exact form of the SOC dependence could not be determined from the experimental data. In addition, no model was found that consistently correlated the observed resistance changes with the Delta% SOC of the tests. Eliminating the SOC and Delta% SOC from the resistance function, the function R(t, T) was then used to correlate the discharge and regen resistances data. This model also allows the prediction of what the resistances would be at different test times at a particular Delta% SOC test condition and temperature. Published by Elsevier Science B.V. C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. US DOE, Washington, DC USA. RP Wright, RB (reprint author), Idaho Natl Engn & Environm Lab, POB 1625,MS-3830, Idaho Falls, ID 83415 USA. NR 28 TC 76 Z9 87 U1 8 U2 81 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 AUG 22 PY 2002 VL 110 IS 2 BP 445 EP 470 AR PII S0378-7753(02)00210-0 DI 10.1016/S0378-7753(02)00210-0 PG 26 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 597MV UT WOS:000178226100023 ER PT J AU Crabtree, G AF Crabtree, G TI Impartial review is key SO NATURE LA English DT Letter C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Crabtree, G (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD AUG 22 PY 2002 VL 418 IS 6900 BP 817 EP 817 DI 10.1038/418817d PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 585YR UT WOS:000177555600014 PM 12192385 ER PT J AU Dullmann, CE Bruchle, W Dressler, R Eberhardt, K Eichler, B Eichler, R Gaggeler, HW Ginter, TN Glaus, F Gregorich, KE Hoffman, DC Jager, E Jost, DT Kirbach, UW Lee, DM Nitsche, H Patin, JB Pershina, V Piguet, D Qin, Z Schadel, M Schausten, B Schimpf, E Schott, HJ Soverna, S Sudowe, R Thorle, P Timokhin, SN Trautmann, N Turler, A Vahle, A Wirth, G Yakushev, AB Zielinski, PM AF Dullmann, CE Bruchle, W Dressler, R Eberhardt, K Eichler, B Eichler, R Gaggeler, HW Ginter, TN Glaus, F Gregorich, KE Hoffman, DC Jager, E Jost, DT Kirbach, UW Lee, DM Nitsche, H Patin, JB Pershina, V Piguet, D Qin, Z Schadel, M Schausten, B Schimpf, E Schott, HJ Soverna, S Sudowe, R Thorle, P Timokhin, SN Trautmann, N Turler, A Vahle, A Wirth, G Yakushev, AB Zielinski, PM TI Chemical investigation of hassium (element 108) SO NATURE LA English DT Article ID ELECTRONIC-STRUCTURE; SEPARATION; DISCOVERY AB The periodic table provides a classification of the chemical properties of the elements. But for the heaviest elements, the transactinides, this role of the periodic table reaches its limits because increasingly strong relativistic effects on the valence electron shells can induce deviations from known trends in chemical properties(1-4). In the case of the first two transactinides, elements 104 and 105, relativistic effects do indeed influence their chemical properties(5), whereas elements 106 and 107 both behave as expected from their position within the periodic table(6,7). Here we report the chemical separation and characterization of only seven detected atoms of element 108 (hassium, Hs), which were generated as isotopes (269)Hs (refs 8, 9) and (270)Hs (ref. 10) in the fusion reaction between Mg-26 and Cm-248. The hassium atoms are immediately oxidized to a highly volatile oxide, presumably HsO(4), for which we determine an enthalpy of adsorption on our detector surface that is comparable to the adsorption enthalpy determined under identical conditions for the osmium oxide OsO4. These results provide evidence that the chemical properties of hassium and its lighter homologue osmium are similar, thus confirming that hassium exhibits properties as expected from its position in group 8 of the periodic table. C1 Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland. Paul Scherrer Inst, Lab Radio & Umweltchem, CH-5232 Villigen, Switzerland. Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany. Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China. Joint Inst Nucl Res, Flerov Lab Nucl React, Dubna 141980, Russia. Tech Univ Munich, Inst Radiochem, D-85748 Garching, Germany. Res Ctr Rossendorf eV, D-01314 Dresden, Germany. RP Gaggeler, HW (reprint author), Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland. RI Eichler, Robert/G-5130-2011; Turler, Andreas/D-3913-2014 OI Turler, Andreas/0000-0002-4274-1056 NR 25 TC 166 Z9 170 U1 0 U2 15 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD AUG 22 PY 2002 VL 418 IS 6900 BP 859 EP 862 DI 10.1038/nature00980 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 585YR UT WOS:000177555600033 PM 12192405 ER PT J AU Stepantsov, SV Bogdanov, DD Fomichev, AS Rodin, AM Sidorchuk, SI Slepnev, RS Ter-Akopian, GM Wolski, R Chelnokov, ML Gorshkov, VA Oganessian, YT Alamanos, N Auger, F Lapoux, V Lobo, G Amos, K Deb, PK Karataglidis, S Golovkov, MS Korsheninnikov, AA Tanihata, I Kuzmin, EA Nikolskii, EY Kavalov, RL AF Stepantsov, SV Bogdanov, DD Fomichev, AS Rodin, AM Sidorchuk, SI Slepnev, RS Ter-Akopian, GM Wolski, R Chelnokov, ML Gorshkov, VA Oganessian, YT Alamanos, N Auger, F Lapoux, V Lobo, G Amos, K Deb, PK Karataglidis, S Golovkov, MS Korsheninnikov, AA Tanihata, I Kuzmin, EA Nikolskii, EY Kavalov, RL TI 24.5 A MeV He-6+p elastic and inelastic scattering SO PHYSICS LETTERS B LA English DT Article DE inelastic proton scattering; halo nuclei; microscopic calculations ID SHELL-MODEL CALCULATIONS; NUCLEI; ENERGY; HALO; PROTONS; RADII; HE-8 AB The structure of He-6 is explored with proton elastic and inelastic scattering to the first 2(+) excited state (Q = -1.8 MeV) of He-6 in the inverse kinematics using a 24.5 A MeV He-6 beam. The distorted wave approximation (DWA) with an optical potential obtained by folding an effective nucleon-nucleon (NN) g-matrix with the He-6 density matrix elements as given by a large basis shell model is used to analyse the data. The comparison of predictions with the data confirms the view that He-6 has an extended (halo) neutron matter distribution. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Joint Inst Nucl Res, Flerov Lab Nucl React, Dubna 141980, Russia. Inst Phys Nucl, Krakow, Poland. CEA Saclay, DSM, DAPNIA, SPHN, F-91191 Gif Sur Yvette, France. Univ Melbourne, Sch Phys, Melbourne, Vic 30010, Australia. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RIKEN, Wako, Saitama 35101, Japan. IV Kurchatov Atom Energy Inst, Moscow 123182, Russia. YERPHI, Yerevan, Armenia. RP Stepantsov, SV (reprint author), Joint Inst Nucl Res, Flerov Lab Nucl React, Dubna 141980, Russia. NR 19 TC 35 Z9 35 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD AUG 22 PY 2002 VL 542 IS 1-2 BP 35 EP 42 AR PII S0370-2693(02)02308-0 DI 10.1016/S0370-2693(02)02308-0 PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 590UR UT WOS:000177842500005 ER PT J AU Evans, RD Doll, GL Morrison, PW Bentley, J More, KL Glass, JT AF Evans, RD Doll, GL Morrison, PW Bentley, J More, KL Glass, JT TI The effects of structure, composition, and chemical bonding on the mechanical properties of Si-aC : H thin films SO SURFACE & COATINGS TECHNOLOGY LA English DT Article DE silicon; diamond-like carbon; reactive sputtering; photoelectron spectroscopy; transmission electron microscopy ID DIAMOND-LIKE CARBON; RAY PHOTOELECTRON-SPECTROSCOPY; AMORPHOUS-CARBON; TRIBOLOGICAL BEHAVIOR; RAMAN-SPECTROSCOPY; VAPOR-DEPOSITION; HARD COATINGS; SILICON; PVD AB The objective of this study was to correlate mechanical properties with the structure and chemistry of silicon-incorporated amorphous hydrocarbon (Si-aC:H) films deposited by reactive sputtering. Hardness and elastic modulus were measured via microindentation, and intrinsic compressive stress was determined from radius-of-curvature measurements using surface mapping microscopy. Film chemistry was investigated with X-ray photoelectron spectroscopy, electron energy-loss spectroscopy, Raman spectroscopy, and attenuated total reflection Fourier transform infrared spectroscopy. Conventional- and high-resolution transmission electron microscopy revealed that the Si-aC:H phase is amorphous and TiC exists at the Si-aC:H/Ti phase boundary. Mechanical properties such as hardness, modulus, and intrinsic stress decreased with increasing Si and H content in the films, for Si/C greater than or equal to 0.04. Measurements show that this is most likely due to a decrease in C-C sp(3) bonds, accompanied by an increase in C-Si and C-H bonds. In addition, the Si-aC:H film with Si/C = 0.04 is fundamentally different from the other Si-aC:H films with higher Si and H contents. It is concluded that a film with diamond-like carbon characteristics can be deposited using a low tetramethyl silane (TMS) flow rate, such that Si/C = 0.04 in the film. However, films deposited with higher TMS flow rates (such that Si/C greater than or equal to 0.06 in the films) are more characteristic of amorphous hydrogenated silicon carbide. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Glass, JT (reprint author), Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA. RI Glass, Jeffrey/A-2266-2010; More, Karren/A-8097-2016; OI Glass, Jeffrey/0000-0002-9554-4398; More, Karren/0000-0001-5223-9097; Evans, Ryan/0000-0003-4549-8247 NR 23 TC 19 Z9 20 U1 0 U2 5 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD AUG 22 PY 2002 VL 157 IS 2-3 BP 197 EP 206 AR PII S0257-8972(02)00164-0 DI 10.1016/S0257-8972(02)00164-0 PG 10 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 575HE UT WOS:000176940200013 ER PT J AU Windes, WE Zimmerman, J Reimanis, IE AF Windes, WE Zimmerman, J Reimanis, IE TI Electrophoretic deposition applied to thick metal-ceramic coatings SO SURFACE & COATINGS TECHNOLOGY LA English DT Article DE electrophoretic deposition; slurry; cermets; nickel; aluminum oxide ID SUSPENSIONS; COMPOSITES; ETHANOL; MGO; EPD AB Electrophoretic deposition was used to fabricate thick (greater than or equal to4 mm) metal-ceramic deposits from a non-aqueous slurry of nickel and alumina particles. A high solid volume in the slurry was identified as the primary parameter for depositing thick cermet coatings rather than the applied electric potential or ionic additive concentration. Ionic additives (MgCl2, AlCl3, etc.) were found to adequately suspend the alumina particles and provide rapid deposition rates. The nickel particles proved to be more difficult to suspend in solution, thereby sacrificing control of the deposition composition. The use of small (3.0 mum) particles and continuously pumping the slurry alleviated the suspension problems but small electric potentials (less than or equal to 100 V/cm) were required to avoid the formation of rough, columnar deposits on the depositing electrode. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. Colorado Sch Mines, Golden, CO 80401 USA. RP Windes, WE (reprint author), Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. RI Zimmerman, Jeramy/C-2273-2009 OI Zimmerman, Jeramy/0000-0001-8936-5345 NR 20 TC 16 Z9 16 U1 0 U2 6 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD AUG 22 PY 2002 VL 157 IS 2-3 BP 267 EP 273 AR PII S0257-8972(02)00163-9 DI 10.1016/S0257-8972(02)00163-9 PG 7 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 575HE UT WOS:000176940200023 ER PT J AU Shin, Y Liu, J Chang, JH Exarhos, GJ AF Shin, Y Liu, J Chang, JH Exarhos, GJ TI Sustained drug release on temperature-responsive poly(N-isopropylacrylamide)-integrated hydroxyapatite SO CHEMICAL COMMUNICATIONS LA English DT Article ID GELS; COLLAPSE AB A hybrid temperature-responsive hydroxyapatite-poly(N-isopropylacrylamide) (HAP-PNIPAAm) gel has been synthesized by the interpenetration of PNIPAAm into a sintered HAP disk through a radical-initiated polymerization of NIPAAm monomers under N-2 atmosphere, and shows sustained positive thermo-responsive drug release profile over a month at PBS buffer. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Shin, Y (reprint author), Pacific NW Natl Lab, POB 999,MSIN K2-44, Richland, WA 99352 USA. NR 13 TC 16 Z9 17 U1 1 U2 14 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1359-7345 J9 CHEM COMMUN JI Chem. Commun. PD AUG 21 PY 2002 IS 16 BP 1718 EP 1719 DI 10.1039/b204703a PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 584WW UT WOS:000177492600031 PM 12196965 ER PT J AU Czernik, S French, R Feik, C Chornet, E AF Czernik, S French, R Feik, C Chornet, E TI Hydrogen by catalytic steam reforming of liquid byproducts from biomass thermoconversion processes SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH LA English DT Article ID FAST PYROLYSIS AB Biomass, a product of photosynthesis, is a renewable resourve that can be used for sustainable production of hydrogen. We propose an approach that combines production of hydrogen with valuable coproducts and shows promising economics. The concept is based on a two-stage process: fast pyrolysis of biomass to generate bio-oil, followed by catalytic steam reforming of the bio-oil, or a fraction thereof, to produce hydrogen. The preferred option is separation of the bio-oil into a lignin-derived fraction, which could be used for producing phenolic resins or fuel-blending components, and a carbohydrate-derived material, which would be reformed to produce hydrogen. The coproduct strategy can also be applied to residual fractions derived from pulping operations of ethanol production and to effluents from other biomass conversion technologies such as transesterification of vegetable oils or food processing residues. In addition, all of the biomass-derived liquids can be coprocessed with natural gas to produce hydrogen mixed fossil-biomass feedstocks, a strategy similar to cofiring biomass and coal for power generation. This work focuses on the second stage of the process: catalytic steam reforming of various biomass-derived liquids. We have used a commercial nickel-based naphtha reforming catalyst in a fluidized-bed reactor to produce hydrogen from the various biomass-derived liquid. Yields have approached or exceeded 80% of those the theoretically possible for stoichiometric conversion. C1 Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA. RP Czernik, S (reprint author), Natl Renewable Energy Lab, Natl Bioenergy Ctr, 1617 Cole Blvd, Golden, CO 80401 USA. NR 13 TC 263 Z9 276 U1 4 U2 46 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 AUG 21 PY 2002 VL 41 IS 17 BP 4209 EP 4215 DI 10.1021/ie020107q PG 7 WC Engineering, Chemical SC Engineering GA 585KB UT WOS:000177523000008 ER PT J AU Glatzel, P Bergmann, U Gu, WW Wang, HX Stepanov, S Mandimutsira, BS Riordan, CG Horwitz, CP Collins, T Cramer, SP AF Glatzel, P Bergmann, U Gu, WW Wang, HX Stepanov, S Mandimutsira, BS Riordan, CG Horwitz, CP Collins, T Cramer, SP TI Electronic structure of Ni complexes by X-ray resonance Raman spectroscopy (resonant inelastic X-ray scattering) SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID NICKEL(II) C1 Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA. Univ Delaware, Dept Chem, Newark, DE 19716 USA. Argonne Natl Lab, Adv Photon Source, BioCAT, Argonne, IL 60439 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Glatzel, P (reprint author), Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. RI Riordan, Charles/F-8513-2010; Glatzel, Pieter/E-9958-2010; ID, BioCAT/D-2459-2012 OI Glatzel, Pieter/0000-0001-6532-8144; FU NCRR NIH HHS [RR-08630]; NIGMS NIH HHS [GM-44380] NR 16 TC 24 Z9 24 U1 1 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 21 PY 2002 VL 124 IS 33 BP 9668 EP 9669 DI 10.1021/ja026028n PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 584EV UT WOS:000177455000006 PM 12175200 ER PT J AU Jensen, MP Bond, AH AF Jensen, MP Bond, AH TI Comparison of covalency in the complexes of trivalent actinide and lanthanide cations SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID NEAR-EDGE STRUCTURE; RAY-ABSORPTION SPECTROSCOPY; TRANSITION-METAL COMPOUNDS; D-ELECTRON STATES; DITHIOPHOSPHINATE COMPLEXES; COORDINATION CHEMISTRY; CYANEX-301 EXTRACTION; ORGANOPHOSPHINIC ACID; MOLECULAR-STRUCTURES; MULTIPLE-SCATTERING AB The complexes of trivalent actinide (Am(III) and Cm(III)) and lanthanide (Nd(III) and Sm(III)) cations with bis(2,4,4-trimethylpentyl)phosphinic acid, bis(2,4,4-trimethylpentyl)monothiophosphinic acid, and bis(2,4,4-trimethylpentyl)dithiophosphinic acid in n-dodecane have been studied by visible absorption spectroscopy and X-ray absorption fine structure (XAFS) measurements in order to understand the chemical interactions responsible for the great selectivity the dithiciphosphinate ligand exhibits for trivalent actinide cations in liquid-liquid extraction. Under the conditions studied, each type of ligand displays a different coordination mode with trivalent f-element cations, The phosphinate ligand coordinates as hydrogen-bonded dinners, forming M(HL2)(3). Both the oxygen and the sulfur donor of the monothiophosphinate ligand can bind the cations, affording both bidentate and monodentate ligands. The dithiophosphinate ligand forms neutral bidentate complexes, ML3, with no discernible nitrate or water molecules in the inner coordination sphere. Comparison of the Cm(III), Nd(III), and Sm(III) XAFS shows that the structure and metal-donor atom bond distances are indistinguishable within experimental error for Similarly sized trivalent lanthanide and actinide cations, despite the selectivity of bis(2,4,4-trimethylpentyl)dithiophosphinic acid for trivalent actinide cations over trivalent lanthanide cations. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Jensen, MP (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Jensen, Mark/G-9131-2012 OI Jensen, Mark/0000-0003-4494-6693 NR 99 TC 148 Z9 149 U1 3 U2 59 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 21 PY 2002 VL 124 IS 33 BP 9870 EP 9877 DI 10.1021/ja0178620 PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA 584EV UT WOS:000177455000053 PM 12175247 ER PT J AU Holm, AP Kauzlarich, SM Morton, SA Waddill, GD Pickett, WE Tobin, JG AF Holm, AP Kauzlarich, SM Morton, SA Waddill, GD Pickett, WE Tobin, JG TI XMCD characterization of the ferromagnetic state of Yb14MnSb11 SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID HALF-METALLIC FERROMAGNETS; MAGNETIC CIRCULAR-DICHROISM; RAY-ABSORPTION-SPECTROSCOPY; DISCRETE GAAS4 TETRAHEDRA; AS3 POLYATOMIC UNIT; ZINTL COMPOUNDS; COLOSSAL MAGNETORESISTANCE; ELECTRONIC-STRUCTURE; TRANSPORT-PROPERTIES; = CA AB X-ray magnetic circular dichroism (XMCD) measurements on Yb14MnSb11 provide experimental evidence of a moment of 5 mu(B) on Mn, with partial cancellation by an opposing moment on the Sb-4 cage surrounding each Mn ion. The compound is isostructural to Ca14AlSb11, with Mn occupying the Al site in the AlSb49- discrete tetrahedral, anionic unit. Bulk magnetization measurements indicate a saturation moment of 3.90 +/- 0.02 mu(B)/formula unit consistent with four unpaired spins and implying a Mn3+, high-spin d(4) state. XMCD measurements reveal that there is strong dichroism in the Mn L-23 edge, the Sb M-45 edge shows a weak dichroism indicating antialignment to the Mn, and the Yb N-45 edge shows no dichroism. Comparisons of the Mn spectra with theoretical models for Mn 21 show excellent agreement. The bulk magnetization can be understood as Mn with a moment of 5 mu(B) and a 2+ configuration, with cancellation of one spin by an antialigned moment from the Sb 5p band of the Sb-4 cage surrounding the Mn. C1 Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. Univ Missouri, Dept Phys, Rolla, MO 65401 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Kauzlarich, SM (reprint author), Univ Calif Davis, Dept Chem, 1 Shields Ave, Davis, CA 95616 USA. RI Tobin, James/O-6953-2015 NR 56 TC 55 Z9 55 U1 1 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 21 PY 2002 VL 124 IS 33 BP 9894 EP 9898 DI 10.1021/ja020564y PG 5 WC Chemistry, Multidisciplinary SC Chemistry GA 584EV UT WOS:000177455000056 PM 12175250 ER PT J AU Field, C Mazaheri, G Ng, JST AF Field, C Mazaheri, G Ng, JST TI A monitor of the focusing strength of plasma lenses using MeV synchrotron radiation SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE synchrotron radiation; plasma lens; absorption length ID BEAM AB The focusing strength of plasma lenses used with high energy electron or positron beams can give rise to synchrotron radiation with critical energies in the MeV range. A method is described for measuring the characteristic energy of this radiation as a way of monitoring the strength of the focus. The principle has been implemented in a plasma lens experiment with a 28.5 GeV positron beam. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Field, C (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD AUG 21 PY 2002 VL 489 IS 1-3 BP 68 EP 74 AR PII S0168-9002(02)00900-2 DI 10.1016/S0168-9002(02)00900-2 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 592DB UT WOS:000177920500008 ER PT J AU Tagg, NJ Hamer, AS Sur, B Earle, ED Helmer, RL Jonkmans, G Moffat, BA Simpson, JJ AF Tagg, NJ Hamer, AS Sur, B Earle, ED Helmer, RL Jonkmans, G Moffat, BA Simpson, JJ TI The Li-8 calibration source for the Sudbury Neutrino Observatory SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Sudbury Neutrino Observatory; solar neutrinos; radioactive source; energy calibration; Cherenkov detector; event reconstruction; gas transport; 8B spectrum ID SOLAR NEUTRINOS; B-8 AB A calibration source employing Li-8 (t(1/2) = 0.838 s) has been developed for use with the Sudbury Neutrino Observatory (SNO). This source creates a spectrum of beta-particles with an energy range similar to that of the SNO B-8 solar neutrino signal. The source is used to test the SNO detector's energy response. position reconstruction and data reduction algorithms. The Li-8 isotope is created using a deuterium-tritium neutron generator in conjunction with a B-11 target, and is carried to a decay chamber using a gas, aerosol transport system. The decay chamber detects prompt alpha-particles by gas scintillation in coincidence with the beta-particles which exit through a thin stainless steel wall. A description is given of the production, transport, and tagging techniques along with a discussion of the performance and application of the source. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Guelph, Guelph, ON N1G 2W1, Canada. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Queens Univ, Kingston, ON K7L 3N6, Canada. Atom Energy Canada Ltd, Chalk River Labs, Chalk River, ON K0J 1J0, Canada. TRIUMF, Vancouver, BC V6T 2A3, Canada. RP Tagg, NJ (reprint author), Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England. NR 15 TC 15 Z9 15 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 AUG 21 PY 2002 VL 489 IS 1-3 BP 178 EP 188 AR PII S0168-9002(02)00860-4 DI 10.1016/S0168-9002(02)00860-4 PG 11 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 592DB UT WOS:000177920500017 ER PT J AU Gorelov, I Gorfine, G Hoeferkamp, M Mata-Bruni, V Santistevan, G Seidel, SC Ciocio, A Einsweiler, K Emes, J Gilchriese, M Joshi, A Kleinfelder, S Marchesini, R McCormack, F Milgrome, O Palaio, N Pengg, F Richardson, J Zizka, G Ackers, M Comes, G Fischer, P Keil, M Martinez, G Peric, I Runolfsson, O Stockmanns, T Treis, J Wermes, N Gossling, C Hugging, F Klaiber-Lodewigs, J Krasel, O Wustenfeld, J Wunstorf, R Barberis, D Beccherle, R Caso, C Cervetto, M Darbo, G Gagliardi, G Gemme, C Morettini, P Netchaeva, P Osculati, B Rossi, L Charles, E Fasching, D Blanquart, L Breugnon, P Calvet, D Clemens, JC Delpierre, P Hallewell, G Laugier, D Mouthuy, T Rozanov, A Valin, I Andreazza, A Caccia, M Citterio, M Lari, T Meroni, C Ragusa, F Troncon, C Vegni, G Lutz, G Richter, RH Rohe, T Boyd, GR Skubic, PL Sicho, P Tomasek, L Vrba, V Holder, M Ziolkowski, M Cauz, D Cobal-Grassmann, M D'Auria, S De Lotto, B del Papa, C Grassmann, H Santi, L Becks, KH Lenzen, G Linder, C AF Gorelov, I Gorfine, G Hoeferkamp, M Mata-Bruni, V Santistevan, G Seidel, SC Ciocio, A Einsweiler, K Emes, J Gilchriese, M Joshi, A Kleinfelder, S Marchesini, R McCormack, F Milgrome, O Palaio, N Pengg, F Richardson, J Zizka, G Ackers, M Comes, G Fischer, P Keil, M Martinez, G Peric, I Runolfsson, O Stockmanns, T Treis, J Wermes, N Gossling, C Hugging, F Klaiber-Lodewigs, J Krasel, O Wustenfeld, J Wunstorf, R Barberis, D Beccherle, R Caso, C Cervetto, M Darbo, G Gagliardi, G Gemme, C Morettini, P Netchaeva, P Osculati, B Rossi, L Charles, E Fasching, D Blanquart, L Breugnon, P Calvet, D Clemens, JC Delpierre, P Hallewell, G Laugier, D Mouthuy, T Rozanov, A Valin, I Andreazza, A Caccia, M Citterio, M Lari, T Meroni, C Ragusa, F Troncon, C Vegni, G Lutz, G Richter, RH Rohe, T Boyd, GR Skubic, PL Sicho, P Tomasek, L Vrba, V Holder, M Ziolkowski, M Cauz, D Cobal-Grassmann, M D'Auria, S De Lotto, B del Papa, C Grassmann, H Santi, L Becks, KH Lenzen, G Linder, C TI Electrical characteristics of silicon pixel detectors SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE silicon; pixel; semiconductor; tracking ID ATLAS AB Prototype sensors for the ATLAS silicon pixel detector have been electrically characterized. The current and voltage characteristics, charge-collection efficiencies, and resolutions have been examined. Devices were fabricated on oxygenated and standard detector-grade silicon wafers. Results from prototypes which examine p-stop and standard and moderated p-spray isolation are presented for a variety of geometrical options. Some of the comparisons relate unirradiated sensors with those that have received fluences relevant to LHC operation. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA. Lawrence Berkeley Natl Lab, Berkeley, CA USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany. Dipartimento Fis, I-16146 Genoa, Italy. Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Ctr Phys Particules Marseille, Marseille, France. Univ Milan, Dipartimento Fis, I-20122 Milan, Italy. Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy. Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA. Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic. Univ Siegen, Fachbereich Phys, D-5900 Siegen, Germany. Dipartimento Fis, Udine, Italy. Ist Nazl Fis Nucl, Udine, Italy. Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, Wuppertal, Germany. RP Seidel, SC (reprint author), Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA. RI Andreazza, Attilio/E-5642-2011; Gorelov, Igor/J-9010-2015; OI Andreazza, Attilio/0000-0001-5161-5759; Gorelov, Igor/0000-0001-5570-0133; Osculati, Bianca Maria/0000-0002-7246-060X; De Lotto, Barbara/0000-0003-3624-4480 NR 7 TC 22 Z9 22 U1 2 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD AUG 21 PY 2002 VL 489 IS 1-3 BP 202 EP 217 AR PII S0168-9002(02)00557-0 DI 10.1016/S0168-9002(02)00557-0 PG 16 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 592DB UT WOS:000177920500020 ER PT J AU Rusak, DA Wilkerson, CW AF Rusak, DA Wilkerson, CW TI Laser-amplified scintillations for detection of alpha radiation SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE scintillations; laser-amplified scintillations; laser-induced fluorescence; alpha radiation; wavelength shifting ID PHOTOMULTIPLIER AB A practical laser-amplified scintillation experiment is performed in order to determine the sensitivity of the technique. Radioactive decay from a 2.6 muCi U-238 source provides 4.2 MeV alpha particles. In the 2p(5)3s manifold, neon metastables are produced by interaction with secondary electrons produced in the decay event. Laser-induced fluorescence is excited from the ground state of the 2p(5)3s manifold to a low-lying level in the 2p(5)3s manifold (1s(5)-2p(9)) with a continuous wave dye laser at 640.2 nm. Fluorescence is observed in the near IR in a photon counting experiment. Published by Elsevier Science B.V. C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. RP Wilkerson, CW (reprint author), Los Alamos Natl Lab, Div Chem, MS J-565, Los Alamos, NM 87545 USA. NR 9 TC 0 Z9 0 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 AUG 21 PY 2002 VL 489 IS 1-3 BP 218 EP 223 AR PII S0168-9002(02)00570-3 DI 10.1016/S0168-9002(02)00570-3 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 592DB UT WOS:000177920500021 ER PT J AU Disdier, L Rouyer, A Wilson, DC Fedotoff, A Stoeckl, C Bourgade, JL Glebov, VY Garconnet, JP Seka, W AF Disdier, L Rouyer, A Wilson, DC Fedotoff, A Stoeckl, C Bourgade, JL Glebov, VY Garconnet, JP Seka, W TI High-resolution neutron imaging of laser imploded DT targets SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE neutron imaging; ICF diagnostic ID CONFINEMENT FUSION-TARGETS AB Using a penumbral technique with a biconical aperture we have obtained neutron images with the highest spatial resolution ever achieved. Implosions at the Omega laser of deuterium tritium-filled glass microballoons with 2.5 and 4.2 mum thick walls produced images with full-width at half-maximums of 78 and 62 mum recorded with a resolution of 60 and 45 mum, respectively. Image sizes are in good agreement with calculations when the effects of noise are included. Higher geometrical spatial resolution and a new deconvolution technique improve the previous measurements of Ress et al. (Science 241 (1988) 956) obtained with a 80 mum resolution. (C) 2002 Elsevier Science B.V. All rights reserved. C1 CEA, DAM Ile France, F-91680 Bruyeres Le Chatel, France. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. RP Disdier, L (reprint author), CEA, DAM Ile France, BP 12, F-91680 Bruyeres Le Chatel, France. NR 17 TC 29 Z9 38 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 AUG 21 PY 2002 VL 489 IS 1-3 BP 496 EP 502 AR PII S0168-9002(02)00888-4 DI 10.1016/S0168-9002(02)00888-4 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 592DB UT WOS:000177920500044 ER PT J AU Cai, XC Keyes, DE AF Cai, XC Keyes, DE TI Nonlinearly preconditioned inexact Newton algorithms SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE nonlinear preconditioning; inexact Newton methods; Krylov subspace methods; nonlinear additive Schwarz; domain decomposition; nonlinear equations; parallel computing; incompressible flows ID KRYLOV-SCHWARZ ALGORITHMS; CONVERGENCE; EQUATIONS; SYSTEMS AB Inexact Newton algorithms are commonly used for solving large sparse nonlinear system of equations F (u*) = 0 arising, for example, from the discretization of partial differential equations. Even with global strategies such as linesearch or trust region, the methods often stagnate at local minima of parallel toFparallel to, especially for problems with unbalanced nonlinearities, because the methods do not have built-in machinery to deal with the unbalanced nonlinearities. To find the same solution u*, one may want to solve instead an equivalent nonlinearly preconditioned system F (u*) = 0 whose nonlinearities are more balanced. In this paper, we propose and study a nonlinear additive Schwarz-based parallel nonlinear preconditioner and show numerically that the new method converges well even for some difficult problems, such as high Reynolds number flows, where a traditional inexact Newton method fails. C1 Univ Colorado, Dept Comp Sci, Boulder, CO 80309 USA. Old Dominion Univ, Dept Math & Stat, Norfolk, VA 23529 USA. Lawrence Livermore Natl Lab, ISCR, Livermore, CA 94551 USA. NASA, ICASE, Langley Res Ctr, Hampton, VA 23681 USA. RP Cai, XC (reprint author), Univ Colorado, Dept Comp Sci, Boulder, CO 80309 USA. NR 29 TC 84 Z9 86 U1 0 U2 3 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PD AUG 21 PY 2002 VL 24 IS 1 BP 183 EP 200 AR PII S106482750037620X DI 10.1137/S106482750037620X PG 18 WC Mathematics, Applied SC Mathematics GA 585XU UT WOS:000177552200009 ER PT J AU Glimm, J Grove, JW Zhang, YM AF Glimm, J Grove, JW Zhang, YM TI Interface tracking for axisymmetric flows SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE front tracking; FronTier; interface; Rayleigh-Taylor ID RICHTMYER-MESHKOV INSTABILITY; RAYLEIGH-TAYLOR INSTABILITY; EULERIAN-COMPUTING-METHOD; FRONT TRACKING; GAS-DYNAMICS; SCHEME; GROWTH; VALIDATION; SIMULATION; SYSTEMS AB A front tracking method for inviscid gas dynamics is presented. The key constructions and algorithms used in the code are described and the interrelations between shock capturing, interface dynamics, computational geometry, grid construction, and parallelism are discussed for the code as a whole. Validation is carried out by comparing the single mode bubble velocity for Rayleigh Taylor instability with theoretical models and experimental results. The calculations are validated by mesh refinement studies and by the comparison of the asymptotic limit of the minimum radius r(min) --> infinity to a pure planar computation in two dimensions. C1 Brookhaven Natl Lab, Ctr Data Intens Comp, Upton, NY 11793 USA. Los Alamos Natl Lab, Comp & Computat Sci Div, Los Alamos, NM 87545 USA. SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. RP Brookhaven Natl Lab, Ctr Data Intens Comp, Upton, NY 11793 USA. EM glimm@ams.sunysb.edu; jgrove@lanl.gov; yzhang@ams.sunysb.edu NR 55 TC 32 Z9 32 U1 0 U2 3 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1064-8275 EI 1095-7197 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PD AUG 21 PY 2002 VL 24 IS 1 BP 208 EP 236 DI 10.1137/S1064827500366690 PG 29 WC Mathematics, Applied SC Mathematics GA 585XU UT WOS:000177552200011 ER PT J AU Henry, G Watkins, D Dongarra, J AF Henry, G Watkins, D Dongarra, J TI A parallel implementation of the nonsymmetric QR algorithm for distributed memory architectures SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE parallel computing; eigenvalue; Schur decomposition; QR algorithm ID EIGENVALUE PROBLEM; REDUCTION; MATRICES; DECOMPOSITION; COMPUTERS; FORM; EIGENVECTORS AB One approach to solving the nonsymmetric eigenvalue problem in parallel is to parallelize the QR algorithm. Not long ago, this was widely considered to be a hopeless task. Recent efforts have led to significant advances, although the methods proposed up to now have suffered from scalability problems. This paper discusses an approach to parallelizing the QR algorithm that greatly improves scalability. A theoretical analysis indicates that the algorithm is ultimately not scalable, but the nonscalability does not become evident until the matrix dimension is enormous. Experiments on the Intel Paragon system, the IBM SP2 supercomputer, the SGI Origin 2000, and the Intel ASCI Option Red supercomputer are reported. C1 Univ Tennessee, Dept Comp Sci, Knoxville, TN 37996 USA. Washington State Univ, Pullman, WA 99164 USA. Univ Tennessee, Innovat Comp Lab, Dept Comp Sci, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Henry, G (reprint author), Univ Tennessee, Dept Comp Sci, 11 Ayres Hall, Knoxville, TN 37996 USA. EM ghenry@cs.utk.edu; watkins@wsu.edu; dongarra@cs.utk.edu RI Dongarra, Jack/E-3987-2014 NR 58 TC 18 Z9 18 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PD AUG 21 PY 2002 VL 24 IS 1 BP 284 EP 311 AR PII S1064827597325165 DI 10.1137/S1064827597325165 PG 28 WC Mathematics, Applied SC Mathematics GA 585XU UT WOS:000177552200015 ER PT J AU Liu, Y Liu, HK Braiman, Y AF Liu, Y Liu, HK Braiman, Y TI Simultaneous injection locking of couples of high-power broad-area lasers driven by a common current source SO APPLIED OPTICS LA English DT Article ID DIODE-LASER; EXTERNAL-CAVITY; ARRAY; PHASE; BEAM AB We experimentally demonstrate the simultaneous injection locking of pairs of high-power broad-area laser diodes in a 19-laser array driven by a common current source. Each pair is injection locked by use of a single-mode low-power semiconductor laser. The frequency and phase locking are verified by the optical spectrum and the interference pattern between the injection-locked lasers. The influence of frequency detuning on the (simultaneous) injection behavior has been experimentally clarified. We validate a necessary condition for the injection locking of a broad-area laser array. (C) 2002 Optical Society of America. C1 Oak Ridge Natl Lab, Ctr Engn Sci Adv Res, Comp & Computat Sci Directorate, Oak Ridge, TN 37831 USA. RP Liu, Y (reprint author), Oak Ridge Natl Lab, Ctr Engn Sci Adv Res, Comp & Computat Sci Directorate, Oak Ridge, TN 37831 USA. EM liuy2@ornl.gov NR 18 TC 14 Z9 14 U1 1 U2 4 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 1559-128X EI 2155-3165 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 2002 VL 41 IS 24 BP 5036 EP 5039 DI 10.1364/AO.41.005036 PG 4 WC Optics SC Optics GA 586AT UT WOS:000177560300014 PM 12206212 ER PT J AU Kinkhabwala, A Sako, M Behar, E Kahn, SM Paerels, F Brinkman, AC Kaastra, JS Gu, MF Liedahl, DA AF Kinkhabwala, A Sako, M Behar, E Kahn, SM Paerels, F Brinkman, AC Kaastra, JS Gu, MF Liedahl, DA TI XMM-Newton reflection grating spectrometer observations of discrete soft X-ray emission features from NGC 1068 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies : individual (NGC 1068); galaxies : Seyfert; line : formation; X-rays : galaxies ID ACTIVE GALACTIC NUCLEI; SEYFERT-GALAXY NGC-1068; NARROW-LINE REGION; NGC 1068; PHYSICAL CONDITIONS; RESOLVED SPECTROSCOPY; ABSORPTION LINES; WARM ABSORBERS; SPECTRUM; NEBULAE AB We present the first high-resolution, soft X-ray spectrum of the prototypical Seyfert 2 galaxy, NGC 1068. This spectrum was obtained with the XMM-Newton Reflection Grating Spectrometer (RGS). Emission lines from H-like and He-like low-Z ions (from C to Si) and Fe L-shell ions dominate the spectrum. Strong, narrow radiative recombination continua (RRCs) for several ions are also present, implying that most of the observed soft X-ray emission arises in low-temperature plasma (kT(e) similar to a few eV). This plasma is photoionized by the inferred nuclear continuum ( obscured along our line of sight), as expected in the unified model of active galactic nuclei (AGNs). We nd excess emission ( compared to pure recombination) in all resonance lines (1s --> np) up to the photoelectric edge, demonstrating the importance of photoexcitation as well. We introduce a simple model of a cone of plasma irradiated by the nuclear continuum; the line emission we observe along our line of sight perpendicular to the cone is produced through recombination/radiative cascade following photoionization and radiative decay following photoexcitation. A remarkably good fit is obtained to the H-like and He-like ionic line series, with inferred radial ionic column densities consistent with recent observations of warm absorbers in Seyfert 1 galaxies. Previous Chandra imaging revealed a large (extending out to similar to500 pc) ionization cone containing most of the X-ray flux, implying that the warm absorber in NGC 1068 is a large-scale outflow. To explain the ionic column densities, a broad, at distribution in the logarithm of the ionization parameter (xi = L(X)/n(e)r(2)) is necessary, spanning log xi = 0-3. This suggests either radially stratified ionization zones, the existence of a broad density distribution ( spanning a few orders of magnitude) at each radius, or some combination of both. C1 Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA. Space Res Org Netherlands, NL-3548 CA Utrecht, Netherlands. MIT, Ctr Space Res, Cambridge, MA 02139 USA. Lawrence Livermore Natl Lab, Dept Phys, Livermore, CA 94550 USA. RP Kinkhabwala, A (reprint author), Columbia Univ, Columbia Astrophys Lab, 550 W 120th St, New York, NY 10027 USA. EM ali@astro.columbia.edu; masao@tapir.caltech.edu; behar@astro.columbia.edu; skahn@astro.columbia.edu; frits@astro.columbia.edu; a.c.brinkman@sron.nl; j.s.kaastra@sron.nl; mfgu@space.mit.edu; duane@leo.llnl.gov NR 52 TC 235 Z9 235 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 20 PY 2002 VL 575 IS 2 BP 732 EP 746 DI 10.1086/341482 PN 1 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 583VF UT WOS:000177430600011 ER PT J AU Eggleton, PP AF Eggleton, PP TI Envelope ejection: An alternative evolutionary process for some early case B binaries SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries : close; stars : evolution ID 5-COLOR OBSERVATIONS; MAGELLANIC CLOUD; INTRINSIC KICKS; NEUTRON-STARS; RADIO PULSAR; TRIPLE STARS; OBC STARS; RZ-SCUTI; ORBIT; BIRTH AB We discuss the evolution of binaries with moderately high masses (similar to10-30 M-.) and with periods of similar to3 -300 days, corresponding mostly to early case B. These are usually thought to evolve either by reasonably conservative Roche lobe overflow, if the initial mass ratio is fairly mild, or else by highly nonconservative common-envelope evolution, with spiral-in to short periods ( hours, typically), if the initial mass ratio is rather extreme. We discuss here a handful of binaries from part of this period range (similar to50-250 days), which appear to have followed a different path: we argue that they must have lost a large proportion of initial mass (similar to70%-80%) but without shortening their periods at all. We suggest that their behavior may be due to the fact that stars of such masses, when evolved also to rather large radii, are not far from the Humphreys-Davidson limit, where single stars lose their envelopes spontaneously in P Cygni winds, and so have envelopes that are only lightly bound to the core. These envelopes therefore may be relatively easily dissipated by the perturbing effect of a companion. In addition, some or all of the stars considered here may have been close to the Cepheid instability strip when they filled their Roche lobes. One or the other, or both, of high luminosity and Cepheid instability, in combination with an appropriately close binary companion, may be implicated. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Eggleton, PP (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. NR 35 TC 14 Z9 14 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 20 PY 2002 VL 575 IS 2 BP 1037 EP 1049 DI 10.1086/341503 PN 1 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 583VF UT WOS:000177430600035 ER PT J AU Noguchi, K Pariev, VI Colgate, SA Beckley, HF Nordhaus, J AF Noguchi, K Pariev, VI Colgate, SA Beckley, HF Nordhaus, J TI Magnetorotational instability in liquid metal Couette flow SO ASTROPHYSICAL JOURNAL LA English DT Article DE accretion, accretion disks; instabilities; MHD; plasmas ID LOCAL SHEAR INSTABILITY; WEAKLY MAGNETIZED DISKS; ACCRETION DISKS; SIMULATIONS AB Despite the importance of the magnetorotational instability (MRI) as a fundamental mechanism for angular momentum transport in magnetized accretion disks, it has yet to be demonstrated in the laboratory. A liquid sodium ! dynamo experiment at the New Mexico Institute of Mining and Technology provides an ideal environment to study the MRI in a rotating metal annulus ( Couette flow). A local stability analysis is performed as a function of shear, magnetic field strength, magnetic Reynolds number, and turbulent Prandtl number. The latter takes into account the minimum turbulence induced by the formation of an Ekman layer against the rigidly rotating end walls of a cylindrical vessel. Stability conditions are presented, and unstable conditions for the sodium experiment are compared with another proposed MRI experiment with liquid gallium. Because of the relatively large magnetic Reynolds number achievable in the sodium experiment, it should be possible to observe the excitation of the MRI for a wide range of wavenumbers and to further observe the transition to the turbulent state. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. New Mexico Inst Min & Technol, Dept Phys, Socorro, NM 87801 USA. Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. PN Lebedev Phys Inst, Moscow 117924, Russia. RP Noguchi, K (reprint author), Los Alamos Natl Lab, T-CNLS, Los Alamos, NM 87545 USA. NR 22 TC 54 Z9 54 U1 0 U2 4 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 20 PY 2002 VL 575 IS 2 BP 1151 EP 1162 DI 10.1086/341502 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 583VF UT WOS:000177430600045 ER PT J AU Curtis, RA Ulrich, J Montaser, A Prausnitz, JM Blanch, HW AF Curtis, RA Ulrich, J Montaser, A Prausnitz, JM Blanch, HW TI Protein-protein interactions in concentrated electrolyte solutions - Hofmeister-series effects SO BIOTECHNOLOGY AND BIOENGINEERING LA English DT Article DE Hofmeister-series; protein interactions; hydrophobic effect; protein salting-out ID 2ND VIRIAL-COEFFICIENT; DYNAMIC LIGHT-SCATTERING; CRYSTAL-GROWTH; PREFERENTIAL INTERACTIONS; MOLECULAR THERMODYNAMICS; LYSOZYME SOLUTIONS; GLOBULAR-PROTEINS; PHASE-EQUILIBRIA; SOLVATION ENERGY; SOLUBILITY AB Protein-protein interactions were measured for ovalbumin and for lysozyme in aqueous salt solutions. Protein-protein interactions are correlated with a proposed potential of mean force equal to the free energy to desolvate the protein surface that is made inaccessible to the solvent due to the protein-protein interaction. This energy is calculated from the surface free energy of the protein that is determined from protein-salt preferential-interaction parameter measurements. In classical salting-out behavior, the protein-salt preferential interaction is unfavorable. Because addition of salt raises the surface free energy of the protein according to the surface-tension increment of the salt, protein-protein attraction increases, leading to a reduction in solubility. When the surface chemistry of proteins is altered by binding of a specific ion, salting-in is observed when the interactions between (kosmotrope) ion-protein complexes are more repulsive than those between the uncomplexed proteins. However, salting-out is observed when interactions between (chaotrope) ion-protein complexes are more attractive than those of the uncomplexed proteins. (C) 2002 Wiley Periodicals, Inc. C1 Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. Swiss Fed Inst Technol, ETH Z, Automat Control Lab, CH-8092 Zurich, Switzerland. RP Blanch, HW (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. NR 58 TC 146 Z9 150 U1 3 U2 66 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0006-3592 J9 BIOTECHNOL BIOENG JI Biotechnol. Bioeng. PD AUG 20 PY 2002 VL 79 IS 4 BP 367 EP 380 DI 10.1002/bit.10342 PG 14 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 576TN UT WOS:000177021400001 PM 12115400 ER PT J AU Zavarin, M Doner, HE AF Zavarin, M Doner, HE TI Interpretation of heterogeneity effects in synchrotron X-ray fluorescence microprobe data SO GEOCHEMICAL TRANSACTIONS LA English DT Article ID MONOLAYER SAMPLES; SIZE; THIN; RADIATION AB Heterogeneity effects often limit the accuracy of synchrotron X-ray fluorescence microprobe elemental analysis data to +/- 30%. The difference in matrix mass absorption at Kalpha and Kbeta fluorescence energies of a particular element can be exploited to yield information on the average depth-position of the element or account for heterogeneity effects. Using this technique, the heterogeneous distribution of Cu in a simple layered sample could be resolved to a 2 x 2 x 10 (x, y, z, where z is the depth coordinate) micrometer scale; a depth-resolution limit was determined for the first transition metal series and several other elements in calcite and iron oxide matrices. For complex heterogeneous systems, determination of average element depth may be computationally limited but the influence of heterogeneity on fluorescence data may still be assessed. We used this method to compare solid-state diffusion with sample heterogeneity across the Ni-serpentine/calcite boundary of a rock from Panoche Creek, California. We previously reported that Ni fluorescence data may indicate solid state diffusion; in fact, sample heterogeneity in the depth dimension can also explain the Ni fluorescence data. Depth heterogeneity in samples can lead to misinterpretation of synchrotron X-ray microprobe results unless care is taken to account for the influence of heterogeneity on fluorescence data. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. RP Zavarin, M (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave,L-221, Livermore, CA 94550 USA. NR 30 TC 8 Z9 10 U1 0 U2 2 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD,, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1467-4866 J9 GEOCHEM T JI Geochem. Trans. PD AUG 20 PY 2002 VL 3 BP 51 EP 55 DI 10.1039/b204348c PG 5 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 625ZY UT WOS:000179846500001 ER PT J AU Caldeira, K Wickett, ME Duffy, PB AF Caldeira, K Wickett, ME Duffy, PB TI Depth, radiocarbon, and the effectiveness of direct CO2 injection as an ocean carbon sequestration strategy SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID GENERAL-CIRCULATION MODEL; DISTRIBUTIONS; TEMPERATURE; SIMULATION; SALINITY; DIOXIDE; CYCLE AB [1] If radiocarbon were a good predictor of the amount of time until a water parcel returns to the surface, it could be used to estimate the effectiveness of carbon sequestration by direct injection. We performed direct CO2 injection simulations in both one-dimensional box-diffusion and three-dimensional ocean general circulation models. The 1-D model results for ocean carbon retention accord with the 3-D model results, especially in the Pacific basin and at shallower depths. In the 1-D model, carbon retention in the ocean is directly related to both the injection depth and the Delta(14)C of carbon at the injection location. However, in the 3-D model, depth, but not radiocarbon, provides a relatively good prediction of carbon retention. This suggests that the expected time for a water parcel to return to the surface is closely related to its depth and not in general to the time since last at the surface. C1 Lawrence Livermore Natl Lab, Climate & Carbon Cycle Modeling Grp, Livermore, CA 94550 USA. Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94550 USA. RP Caldeira, K (reprint author), Lawrence Livermore Natl Lab, Climate & Carbon Cycle Modeling Grp, 7000 E Ave,L-103, Livermore, CA 94550 USA. RI Caldeira, Ken/E-7914-2011 NR 19 TC 9 Z9 10 U1 0 U2 4 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 AUG 20 PY 2002 VL 29 IS 16 AR 1766 DI 10.1029/2001GL014234 PG 4 WC Geosciences, Multidisciplinary SC Geology GA 622DH UT WOS:000179630900006 ER PT J AU Johnston, CT Wang, SL Bish, DL Dera, P Agnew, SF Kenney, JW AF Johnston, CT Wang, SL Bish, DL Dera, P Agnew, SF Kenney, JW TI Novel pressure-induced phase transformations in hydrous layered materials SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID RIETVELD REFINEMENT; MG(OH)(2); DICKITE; COMPRESSION; TRANSITION; SILICATES; KAOLINITE; DISORDER; GIBBSITE; BRUCITE AB [1] High-pressure Raman and X-ray diffraction data on single crystals of hydrous layer-structure minerals, dickite and gibbsite, reveal structural phase transitions occurring between 2.0 and 2.5 GPa. In the case of dickite, this is the first documented occurrence of a pressure-induced phase transformation in a 1: 1 phyllosilicate. Above the transition the structure of individual 1: 1 layers remains unchanged, whereas the stacking of individual layers and the interlayer topology change significantly. Similar to dickite, single-crystal Raman spectra of gibbsite show large perturbations in the v(OH) region and suggest that the interlayer OH groups play a critical role in the phase transformation. C1 Purdue Univ, ESEI, W Lafayette, IN 47907 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA. Archimedes Technol Grp Inc, San Diego, CA 92121 USA. Concordia Univ, Chem Phys Lab, Irvine, CA 92612 USA. RP Johnston, CT (reprint author), Purdue Univ, ESEI, W Lafayette, IN 47907 USA. RI Wang, Shan-Li/C-6016-2008; Dera, Przemyslaw/F-6483-2013; Johnston, Cliff/B-2215-2009 OI Wang, Shan-Li/0000-0003-3156-5365; Johnston, Cliff/0000-0002-8462-9724 NR 22 TC 24 Z9 24 U1 2 U2 9 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 EI 1944-8007 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD AUG 20 PY 2002 VL 29 IS 16 AR 1770 DI 10.1029/2002GL015402 PG 4 WC Geosciences, Multidisciplinary SC Geology GA 622DH UT WOS:000179630900010 ER PT J AU Puricelli, L Proiettii, CJ Labriola, L Salatino, M Balana, ME Ghiso, JA Lupu, R Pignataro, OP Charreau, EH Joffe, EBD Elizalde, PV AF Puricelli, L Proiettii, CJ Labriola, L Salatino, M Balana, ME Ghiso, JA Lupu, R Pignataro, OP Charreau, EH Joffe, EBD Elizalde, PV TI Heregulin inhibits proliferation via ERKs and phosphatidyl-inositol 3-kinase activation but regulates urokinase plasminogen activator independently of these pathways in metastatic mammary tumor cells SO INTERNATIONAL JOURNAL OF CANCER LA English DT Article DE heregulin; ErbB receptors; metastatic mammary tumors; ERKs; phosphatidylinositol 3-kinase ID EPIDERMAL-GROWTH-FACTOR; BREAST-CANCER CELLS; FACTOR RECEPTOR FAMILY; DIFFERENTIATION FACTOR; TRANSDUCTION PATHWAYS; EPITHELIAL-CELLS; MAP KINASE; SIGNALING PATHWAYS; CARCINOMA-CELLS; EXPRESSION AB Heregulin (HRG) and type I receptor tyrosine kinase (RTK) expression was investigated in the highly invasive and metastatic LM3 cell line, our previously described model of metastasis for mammary cancer (Bal de Kier Joffe et al. [1986] Invasion Metastasis 6:302-12; Urtreger et al. [1997] Int J Oncol 1:489-96). Although LM3 cells do not express HRG, they exhibit high levels of ErbB-2 and ErbB-3 as well as moderate expression of ErbB-4. Addition of exogenous HRGbeta1 resulted in inhibition of both proliferation and migration of LM3 cells. HRGbeta1 was also able to decrease the activity of urokinase-type plasminogen activator (uPA) and matrix metalloproteinase 9 (MMP-9), 2 key enzymes in the invasion and metastatic cascade. HRGbeta1 treatment of LM3 cells induced tyrosine phosphorylation of ErbB-2, ErbB-3 and ErbB-4 as well as the formation of ErbB-2/ErbB-3 and ErbB-2/ErbB-4 heterodimers. Assessment of the signaling pathways involved in HRGbeta1 action indicated that the addition of HRG1 to LM3 cells resulted in activation of phosphatidylinositol 3- kinase (P1-3K) and in strong induction of the association of the p85 subunit of P1-3K with ErbB-3. HRGbeta1 also caused the rapid activation of ERK1/ERK2 and Stat:3 and Stat5 (signal transducers and activators of transcription [STAT]). This is the first demonstration of the ability of HRGP I to activate STATs in mammary tumor cells. Blockage of P1-3K activity with its chemical inhibitor wortmannin, or of MEK1/ERKs activity with PD98059, resulted in suppression of the ability of HRGbeta1 to inhibit LM3 cell growth. Notwithstanding the suppression of these 2 signaling pathways, HRGP I still proved capable of inhibiting uPA activity. Therefore, our results provide evidence that signaling pathways involved in HRGbeta1-induced proliferation appear to be distinct from those involved in HRGbeta1 regulation of uPA, a protease that plays a pivotal role in invasion and metastasis. (C) 2002 Wiley-Liss, Inc. C1 Consejo Nacl Invest Cient & Tecn, IBYME, Inst Biol & Med Expt, Lab Mol Mechanisms Carcinogenesis, RA-1428 Buenos Aires, DF, Argentina. Univ Buenos Aires, Inst Oncol Angel H Roffo, RA-1053 Buenos Aires, DF, Argentina. Univ Calif Berkeley, Lawrence Berkeley Natl Labs, Berkeley, CA 94720 USA. Univ Buenos Aires, Fac Ciencias Exactas & Nat, RA-1053 Buenos Aires, DF, Argentina. RP Elizalde, PV (reprint author), Consejo Nacl Invest Cient & Tecn, IBYME, Inst Biol & Med Expt, Lab Mol Mechanisms Carcinogenesis, Obligado 2490, RA-1428 Buenos Aires, DF, Argentina. RI Labriola, Leticia/E-9059-2012 OI Labriola, Leticia/0000-0003-3899-6088 NR 58 TC 28 Z9 30 U1 0 U2 2 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0020-7136 J9 INT J CANCER JI Int. J. Cancer PD AUG 20 PY 2002 VL 100 IS 6 BP 642 EP 653 DI 10.1002/ijc.10533 PG 12 WC Oncology SC Oncology GA 580AM UT WOS:000177211900004 PM 12209601 ER PT J AU Lipton, MS Pasa-Tolic, L Anderson, GA Anderson, DJ Auberry, DL Battista, KR Daly, MJ Fredrickson, J Hixson, KK Kostandarithes, H Masselon, C Markillie, LM Moore, RJ Romine, MF Shen, YF Stritmatter, E Tolic, N Udseth, HR Venkateswaran, A Wong, LK Zhao, R Smith, RD AF Lipton, MS Pasa-Tolic, L Anderson, GA Anderson, DJ Auberry, DL Battista, KR Daly, MJ Fredrickson, J Hixson, KK Kostandarithes, H Masselon, C Markillie, LM Moore, RJ Romine, MF Shen, YF Stritmatter, E Tolic, N Udseth, HR Venkateswaran, A Wong, LK Zhao, R Smith, RD TI Global analysis of the Deinococcus radiodurans proteome by using accurate mass tags SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID ION-CYCLOTRON RESONANCE; CAPILLARY LIQUID-CHROMATOGRAPHY; SUPEROXIDE-DISMUTASE; POLYACRYLAMIDE GELS; IONIZING-RADIATION; SPECTROMETRY; DNA; REPAIR; GENOME; IDENTIFICATION AB Understanding biological systems and the roles of their constituents is facilitated by the ability to make quantitative, sensitive, and comprehensive measurements of how their proteome changes, e.g., in response to environmental perturbations. To this end, we have developed a high-throughput methodology to characterize an organism's dynamic proteome based on the combination of global enzymatic digestion, high-resolution liquid chromatographic separations, and analysis by Fourier transform ion cyclotron resonance mass spectrometry. The peptides produced serve as accurate mass tags for the proteins and have been used to identify with high confidence >61% of the predicted proteome for the ionizing radiation-resistant bacterium Deinococcus radiodurans. This fraction represents the broadest proteome coverage for any organism to date and includes 715 proteins previously annotated as either hypothetical or conserved hypothetical. C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Uniformed Serv Univ Hlth Sci, Dept Pathol, Bethesda, MD 20814 USA. Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 USA. RP Smith, RD (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, POB 999,MSIN K8-98, Richland, WA 99352 USA. RI Masselon, Christophe/A-2340-2010; Smith, Richard/J-3664-2012; OI Smith, Richard/0000-0002-2381-2349; Romine, Margaret/0000-0002-0968-7641; Wong, Kwong-Kwok/0000-0002-0375-6669 NR 43 TC 306 Z9 314 U1 2 U2 28 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD AUG 20 PY 2002 VL 99 IS 17 BP 11049 EP 11054 DI 10.1073/pnas.172170199 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 586VM UT WOS:000177606900021 PM 12177431 ER PT J AU Sunwoo, A Goto, D AF Sunwoo, A Goto, D TI Effects of processing on microstructure and properties of alpha-uranium formed parts SO SCRIPTA MATERIALIA LA English DT Article DE cold working; optical microscopy; stress-strain relationship; metals; microstructure AB The interrelated effects of thermomechanical processing and chemistry on the microstructure and tensile properties of alpha-uranium formed parts were characterized and presented. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Sunwoo, A (reprint author), Lawrence Livermore Natl Lab, POB 808,L-140, Livermore, CA 94550 USA. NR 12 TC 1 Z9 2 U1 0 U2 3 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 AUG 20 PY 2002 VL 47 IS 4 BP 261 EP 266 AR PII S1359-6462(02)00137-9 DI 10.1016/S1359-6462(02)00137-9 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 586WU UT WOS:000177609800009 ER PT J AU Craciunescu, C Kishi, Y Lograsso, TA Wuttig, M AF Craciunescu, C Kishi, Y Lograsso, TA Wuttig, M TI Martensitic transformation in Co2NiGa ferromagnetic shape memory alloys SO SCRIPTA MATERIALIA LA English DT Article DE phase transformation; shape memory; internal friction; ferromagnetism ID MAGNETOSTRICTION; SYSTEM; PHASE AB This investigation of the martensitic transformation in ferromagnetic Co2NiGa shape memory alloys shows that, like in the Ni2MnGa system, the martensite start temperature is proportional to the valence electron concentration. Al is increasing the transition temperatures when it substitutes Ga and is decreasing them when it substitutes Ni. (C) 2002 Published by Elsevier Science Ltd. on behalf of Acta Materialia Inc. C1 Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA. Iowa State Univ, Ames Lab, Ames, IA USA. RP Wuttig, M (reprint author), Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA. RI Craciunescu, Corneliu/B-8890-2011 NR 17 TC 58 Z9 62 U1 1 U2 23 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD AUG 20 PY 2002 VL 47 IS 4 BP 285 EP 288 AR PII S1359-6462(02)00148-3 DI 10.1016/S1359-6462(02)00148-3 PG 4 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 586WU UT WOS:000177609800013 ER PT J AU Stepanovskyy, S Yeh, V Hupalo, M Tringides, MC AF Stepanovskyy, S Yeh, V Hupalo, M Tringides, MC TI Stabilization of the Pb/Si(111)-(7x7) uniform height islands to higher temperatures with oxygen adsorption SO SURFACE SCIENCE LA English DT Article DE quantum effects; growth; lead; silicon ID BY-LAYER GROWTH; HELIUM-ATOM SCATTERING; THIN METAL-FILMS; QUANTUM; DIFFRACTION; PB AB We have studied how oxygen adsorbed on top of the uniform height Pb islands, (grown on Si(111)-(7 x 7) at low temperatures T-1 < 190 K) extends the temperature range of their stability. The evolution of the island height and size with temperature is monitored with SPA-LEED. The presence of oxygen suppresses Pb diffusion to higher levels and results in sharper island height distribution, when compared to the height distribution on the clean Pb/Si(111)-(7 x 7) system. Most likely this is because the barrier at the island edges, which controls the transfer of atoms from lower levels to the top of the islands, is increased with the adsorption of oxygen. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Iowa State Univ Sci & Technol, Ames Lab, USDOE, Dept Phys, Ames, IA 50011 USA. RP Tringides, MC (reprint author), Lviv Natl Univ, Lvov, Ukraine. NR 21 TC 7 Z9 7 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD AUG 20 PY 2002 VL 515 IS 1 BP 187 EP 198 AR PII S0039-6028(02)01881-2 DI 10.1016/S0039-6028(02)01881-2 PG 12 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 589AT UT WOS:000177735900022 ER PT J AU Henderson, MA AF Henderson, MA TI Insights into the (1x1)-to-(2x1) phase transition of the alpha-Fe2O3(012) surface using EELS, LEED and water TPD SO SURFACE SCIENCE LA English DT Article DE iron oxide; surface relaxation and reconstruction; surface thermodynamics (including phase transitions); electron energy loss spectroscopy (EELS); low energy electron diffraction (LEED); thermal desorption; water ID SCANNING-TUNNELING-MICROSCOPY; IRON-OXIDE; ELECTRONIC-STRUCTURE; ACTIVE-SITES; METAL OXIDES; ADSORPTION; FE3O4(111); HEMATITE; DISSOLUTION; MAGNETITE AB The (1 x 1)-to-(2 x 1) surface reconstruction of alpha-Fe2O3(012) (also known as the R-cut or (01 (1) over bar2) surface) was examined using low energy electron diffraction (LEED), electron energy loss spectroscopy (EELS) and temperature programmed desorption (TPD). The (1 x 1) surface is generated by heating in 5 x 10(-7) Torr O-2 at 750 K, followed by cooling in O-2. The surface prepared in this manner exhibits a p(1 x 1) LEED pattern consistent with a bulk-terminated structure. EELS analysis of this surface shows a 2 eV bandgap consistent with that of hematite and little or no evidence for Fe2+ surface sites. In contrast, a (2 x 1) LEED pattern is observed after annealing the (1 x 1) surface in UHV at 950 K. The EELS spectrum of the (2 x 1) surface exhibits a prominent loss feature at about I eV, which is consistent with Fe2+ sites. The (2 x 1) surface prepared by annealing at 950 K does not possess a termination film of Fe3O4, as has been reported in the literature for the (001) surface, since the phonon spectrum remains consistent with that of alpha-Fe2O3. Both LEED and EELS detect the onset of the (1 x 1)-to-(2 x 1) reconstruction process to be at 700 K, whereas water TPD, which shows distinctively different desorption features for those two surface phases, detects the onset to occur at about 600 K. The (1 x 1)-to-(2 x 1) surface reconstruction process appears to be highly nucleated based on observations that the (2 x 1) LEED spots grow in during annealing without streaking and that coverage-dependent water TPD for a half (1 x 1)-half (2 x 1) surface shows simultaneous filling of both (1 x 1) and (2 x 1) binding sites. Given that the reconstruction process is accompanied by reduction of Fe3+ surface sites to Fe2+ sites, the preference for growth of existing (2 x 1) domains over initiation of new (2 x 1) domains implies that the kinetics for hematite reduction (i.e., Fe2+ formation) are more favorable in the vicinity of other Fe2+ sites than in regions rich in Fe3+. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Henderson, MA (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, POB 999,MS K8-93, Richland, WA 99352 USA. NR 51 TC 25 Z9 25 U1 3 U2 32 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD AUG 20 PY 2002 VL 515 IS 1 BP 253 EP 262 AR PII S0039-6028(02)01917-9 DI 10.1016/S0039-6028(02)01917-9 PG 10 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 589AT UT WOS:000177735900029 ER PT J AU Armitage, R Yang, Q Feick, H Gebauer, J Weber, ER Shinkai, S Sasaki, K AF Armitage, R Yang, Q Feick, H Gebauer, J Weber, ER Shinkai, S Sasaki, K TI Lattice-matched HfN buffer layers for epitaxy of GaN on Si SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; CHEMICAL-VAPOR-DEPOSITION; LIGHT-EMITTING-DIODES; HIGH-QUALITY; STRESS-CONTROL; PHASE EPITAXY; HEXAGONAL GAN; SI(111); GROWTH; FILMS AB Gallium nitride is grown by plasma-assisted molecular-beam epitaxy on (111) and (001) silicon substrates using sputter-deposited hafnium nitride buffer layers. Wurtzite GaN epitaxial layers are obtained on both the (111) and (001) HfN/Si surfaces, with crack-free thickness up to 1.2 mum. Initial results for GaN grown on the (111) surface show a photoluminescence peak width of 17 meV at 11 K, and an asymmetric x-ray rocking curve width of 20 arcmin. Wurtzite GaN on HfN/Si(001) shows reduced structural quality and peculiar low-temperature luminescence features. However, growth on the (001) surface results in nearly stress-free films, suggesting that much thicker crack-free layers could be obtained. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Kitami Inst Technol, Fac Engn, Dept Mat Sci, Kitami, Hokkaido 0908507, Japan. RP Armitage, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 25 TC 53 Z9 56 U1 1 U2 19 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 19 PY 2002 VL 81 IS 8 BP 1450 EP 1452 DI 10.1063/1.1501447 PG 3 WC Physics, Applied SC Physics GA 582LC UT WOS:000177351600028 ER PT J AU Gross, RL Liu, XH Suits, AG AF Gross, RL Liu, XH Suits, AG TI The ultraviolet photodissociation of 2-chlorobutane: an imaging study comparing state-resolved and universal probe techniques SO CHEMICAL PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAMS APPARATUS; MULTIPHOTON IONIZATION; CHLORIDE; DYNAMICS; YIELDS; ATOMS AB We present an imaging study of the Cl elimination channel in the 193 nm photodissociation of 2-chlorobutane. We compare the results obtained using resonant 2+1 photoionization of the Cl(P-2(3/2)) and Cl*(P-2(1/2)) products with those obtained using single photon ionization of the 2-butyl radical cofragment, and find reasonable agreement between the two techniques. The product translational energy distribution is sharply peaked at similar to50% of the available energy, while the branching fraction to the spin-orbit excited Cl* is 0.50. We also present results for H elimination in the 157 nm photodissociation of 2-chlorobutane. The results are interpreted using a simple impulsive model of the dissociation dynamics. (C) 2002 Published by Elsevier Science B.V. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. RP Suits, AG (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 18 TC 15 Z9 15 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD AUG 19 PY 2002 VL 362 IS 3-4 BP 229 EP 234 AR PII S0009-2614(02)00993-4 DI 10.1016/S0009-2614(02)00993-4 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 588XC UT WOS:000177726600009 ER PT J AU Chekanov, S Krakauer, D Magill, S Musgrave, B Pellegrino, A Repond, J Yoshida, R Mattingly, MCK Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Giusti, P Iacobucci, G Levi, G Margotti, A Nania, R Palmonari, F Pesci, A Sartorelli, G Zichichi, A Aghuzumtsyan, G Bartsch, D Brock, I Crittenden, J Goers, S Hartmann, H Hilger, E Irrgang, P Jakob, HP Kappes, A Katz, UF Kerger, R Kind, O Paul, E Rautenberg, J Renner, R Schnurbusch, H Stifutkin, A Tandler, J Voss, KC Weber, A Bailey, DS Brook, NH Cole, JE Foster, B Heath, GP Heath, HF Robins, S Rodrigues, E Scott, J Tapper, RJ Wing, M Capua, M Mastroberardino, A Schioppa, M Susinno, G Kim, JY Kim, YK Lee, JH Lim, IT Pac, MY Caldwell, A Helbich, M Liu, X Mellado, B Paganis, S Schmidke, WB Sciulli, F Chwastowski, J Eskreys, A Figiel, J Olkiewicz, K Przybycien, MB Stopa, P Zawiejski, L Bednarek, B Grabowska-Bold, I Jelen, K Kisielewska, D Kowal, AM Kowal, M Kowalski, T Mindur, B Przybycien, M Rulikowska-Zarebska, E Suszycki, L Szuba, D Szuba, J Kotanski, A Slominski, W Bauerdick, LAT Behrens, U Borras, K Chiochia, V Dannheim, D Derrick, M Drews, G Fourletova, J Fox-Murphy, A Fricke, U Geiser, A Goebel, F Gottlicher, P Gutsche, O Haas, T Hain, W Hartner, GF Hillert, S Kotz, U Kowalski, H Labes, H Lelas, D Lohr, B Mankel, R Martinez, M Moritz, M Notz, D Pellmann, IA Petrucci, MC Polini, A Schneekloth, U Selonke, F Surrow, B Wessoleck, H Wichmann, R Wolf, G Youngman, C Zeuner, W Viani, ALD Meyer, A Schlenstedt, S Barbagli, G Gallo, E Genta, C Pelfer, PG Bamberger, A Benen, A Coppola, N Markun, P Raach, H Wolfle, S Bell, M Bussey, PJ Doyle, AT Glasman, C Hanlon, S Lee, SW Lupi, A McCance, GJ Saxon, DH Skillicorn, IO Gialas, I Bodmann, B Carli, T Holm, U Klimek, K Krumnack, N Lohrmann, E Milite, M Salehi, H Stonjek, S Wick, K Ziegler, A Ziegler, A Collins-Tooth, C Foudas, C Goncalo, R Long, KR Metlica, F Miller, DB Tapper, AD Walker, R Cloth, P Filges, D Kuze, M Nagano, K Tokushuku, K Yamada, S Yamazaki, Y Barakbaev, AN Boos, EG Pokrovskiy, NS Zhautykov, BO Lim, H Son, D Barreiro, F Gonzalez, O Labarga, L del Peso, J Redondo, I Terron, J Vazquez, M Barbi, M Bertolin, A Corriveau, F Ochs, A Padhi, S Stairs, DG St-Laurent, M Tsurugai, T Antonov, A Bashkirov, V Danilov, P Dolgoshein, BA Gladkov, D Sosnovtsev, V Suchkov, S Dementiev, RK Ermolov, PF Golubkov, YA Katkov, II Khein, LA Korzhavina, IA Kuzmin, VA Levchenko, BB Lukina, OY Proskuryakov, AS Shcheglova, LM Vlasov, NN Zotkin, SA Bokel, C Engelen, J Grijpink, S Koffeman, E Kooijman, P Maddox, E Schagen, S Tassi, E Tiecke, H Tuning, N Velthuis, JJ Wiggers, L de Wolf, E Brummer, N Bylsma, B Durkin, LS Gilmore, J Ginsburg, CM Kim, CL Ling, TY Boogert, S Cooper-Sarkar, AM Devenish, RCE Ferrando, J Grzelak, G Matsushita, T Rigby, M Ruske, O Sutton, MR Walczak, R Brugnera, R Carlin, R Dal Corso, F Dusini, S Garfagnini, A Limentani, S Longhin, A Parenti, A Posocco, M Stanco, L Turcato, M Adamczyk, L Heaphy, EA Oh, BY Saull, PRB Whitmore, JJ Iga, Y D'Agostini, G Marini, G Nigro, A Cormack, C Hart, JC McCubbin, NA Heusch, C Park, IH Pavel, N Abramowicz, H Dagan, S Gabareen, A Kananov, S Kreisel, A Levy, A Abe, T Fusayasu, T Kohno, T Umemori, K Yamashita, T Hamatsu, R Hirose, T Inuzuka, M Kitamura, S Matsuzawa, K Nishimura, T Arneodo, M Cartiglia, N Cirio, R Costa, M Ferrero, MI Maselli, S Monaco, V Peroni, C Ruspa, M Sacchi, R Solano, A Staiano, A Fagerstroem, CP Galea, R Koop, T Martin, JF Mirea, A Sabetfakhri, A Butterworth, JM Gwenlan, C Hall-Wilton, R Jones, TW Lane, JB Lightwood, MS Loizides, JH West, BJ Ciborowski, J Ciesielski, R Nowak, RJ Pawlak, JM Smalska, B Sztuk, J Tymieniecka, T Ukleja, A Ukleja, J Zakrzewski, JA Zarnecki, AF Adamus, M Plucinski, P Eisenberg, Y Gladilin, LK Hochman, D Karshon, U Kcira, D Lammers, S Li, L Reeder, DD Savin, AA Smith, WH Deshpande, A Dhawan, S Hughes, VW Straub, PB Bhadra, S Catterall, CD Fourletov, S Khakzad, M Menary, S Soares, M Standage, J AF Chekanov, S Krakauer, D Magill, S Musgrave, B Pellegrino, A Repond, J Yoshida, R Mattingly, MCK Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Giusti, P Iacobucci, G Levi, G Margotti, A Nania, R Palmonari, F Pesci, A Sartorelli, G Zichichi, A Aghuzumtsyan, G Bartsch, D Brock, I Crittenden, J Goers, S Hartmann, H Hilger, E Irrgang, P Jakob, HP Kappes, A Katz, UF Kerger, R Kind, O Paul, E Rautenberg, J Renner, R Schnurbusch, H Stifutkin, A Tandler, J Voss, KC Weber, A Bailey, DS Brook, NH Cole, JE Foster, B Heath, GP Heath, HF Robins, S Rodrigues, E Scott, J Tapper, RJ Wing, M Capua, M Mastroberardino, A Schioppa, M Susinno, G Kim, JY Kim, YK Lee, JH Lim, IT Pac, MY Caldwell, A Helbich, M Liu, X Mellado, B Paganis, S Schmidke, WB Sciulli, F Chwastowski, J Eskreys, A Figiel, J Olkiewicz, K Przybycien, MB Stopa, P Zawiejski, L Bednarek, B Grabowska-Bold, I Jelen, K Kisielewska, D Kowal, AM Kowal, M Kowalski, T Mindur, B Przybycien, M Rulikowska-Zarebska, E Suszycki, L Szuba, D Szuba, J Kotanski, A Slominski, W Bauerdick, LAT Behrens, U Borras, K Chiochia, V Dannheim, D Derrick, M Drews, G Fourletova, J Fox-Murphy, A Fricke, U Geiser, A Goebel, F Gottlicher, P Gutsche, O Haas, T Hain, W Hartner, GF Hillert, S Kotz, U Kowalski, H Labes, H Lelas, D Lohr, B Mankel, R Martinez, M Moritz, M Notz, D Pellmann, IA Petrucci, MC Polini, A Schneekloth, U Selonke, F Surrow, B Wessoleck, H Wichmann, R Wolf, G Youngman, C Zeuner, W Viani, ALD Meyer, A Schlenstedt, S Barbagli, G Gallo, E Genta, C Pelfer, PG Bamberger, A Benen, A Coppola, N Markun, P Raach, H Wolfle, S Bell, M Bussey, PJ Doyle, AT Glasman, C Hanlon, S Lee, SW Lupi, A McCance, GJ Saxon, DH Skillicorn, IO Gialas, I Bodmann, B Carli, T Holm, U Klimek, K Krumnack, N Lohrmann, E Milite, M Salehi, H Stonjek, S Wick, K Ziegler, A Ziegler, A Collins-Tooth, C Foudas, C Goncalo, R Long, KR Metlica, F Miller, DB Tapper, AD Walker, R Cloth, P Filges, D Kuze, M Nagano, K Tokushuku, K Yamada, S Yamazaki, Y Barakbaev, AN Boos, EG Pokrovskiy, NS Zhautykov, BO Lim, H Son, D Barreiro, F Gonzalez, O Labarga, L del Peso, J Redondo, I Terron, J Vazquez, M Barbi, M Bertolin, A Corriveau, F Ochs, A Padhi, S Stairs, DG St-Laurent, M Tsurugai, T Antonov, A Bashkirov, V Danilov, P Dolgoshein, BA Gladkov, D Sosnovtsev, V Suchkov, S Dementiev, RK Ermolov, PF Golubkov, YA Katkov, II Khein, LA Korzhavina, IA Kuzmin, VA Levchenko, BB Lukina, OY Proskuryakov, AS Shcheglova, LM Vlasov, NN Zotkin, SA Bokel, C Engelen, J Grijpink, S Koffeman, E Kooijman, P Maddox, E Schagen, S Tassi, E Tiecke, H Tuning, N Velthuis, JJ Wiggers, L de Wolf, E Brummer, N Bylsma, B Durkin, LS Gilmore, J Ginsburg, CM Kim, CL Ling, TY Boogert, S Cooper-Sarkar, AM Devenish, RCE Ferrando, J Grzelak, G Matsushita, T Rigby, M Ruske, O Sutton, MR Walczak, R Brugnera, R Carlin, R Dal Corso, F Dusini, S Garfagnini, A Limentani, S Longhin, A Parenti, A Posocco, M Stanco, L Turcato, M Adamczyk, L Heaphy, EA Oh, BY Saull, PRB Whitmore, JJ Iga, Y D'Agostini, G Marini, G Nigro, A Cormack, C Hart, JC McCubbin, NA Heusch, C Park, IH Pavel, N Abramowicz, H Dagan, S Gabareen, A Kananov, S Kreisel, A Levy, A Abe, T Fusayasu, T Kohno, T Umemori, K Yamashita, T Hamatsu, R Hirose, T Inuzuka, M Kitamura, S Matsuzawa, K Nishimura, T Arneodo, M Cartiglia, N Cirio, R Costa, M Ferrero, MI Maselli, S Monaco, V Peroni, C Ruspa, M Sacchi, R Solano, A Staiano, A Fagerstroem, CP Galea, R Koop, T Martin, JF Mirea, A Sabetfakhri, A Butterworth, JM Gwenlan, C Hall-Wilton, R Jones, TW Lane, JB Lightwood, MS Loizides, JH West, BJ Ciborowski, J Ciesielski, R Nowak, RJ Pawlak, JM Smalska, B Sztuk, J Tymieniecka, T Ukleja, A Ukleja, J Zakrzewski, JA Zarnecki, AF Adamus, M Plucinski, P Eisenberg, Y Gladilin, LK Hochman, D Karshon, U Kcira, D Lammers, S Li, L Reeder, DD Savin, AA Smith, WH Deshpande, A Dhawan, S Hughes, VW Straub, PB Bhadra, S Catterall, CD Fourletov, S Khakzad, M Menary, S Soares, M Standage, J CA ZEUS Collaboration TI Leading neutron production in e(+)p collisions at HERA SO NUCLEAR PHYSICS B LA English DT Review ID DEEP-INELASTIC SCATTERING; CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; PION STRUCTURE-FUNCTION; TRIPLE-REGGEON MODEL; TOTAL CROSS-SECTIONS; OF-MASS ENERGY; 100 GEV-C; PARTON DISTRIBUTIONS; FRACTURE FUNCTIONS AB The production of neutrons carrying at least 20% of the proton beam energy (x(L) > 0.2) in e(+) p collisions has been studied with the ZEUS detector at HERA for a wide range of Q(2), the photon virtuality, from photoproduction to deep inelastic scattering. The neutron-tagged cross section, ep --> e(1) Xn, is measured relative to the inclusive cross section, ep --> e(1)X, thereby reducing the systematic uncertainties. For x(L) > 0.3, the rate of neutrons in photoproduction is about half of that measured in hadroproduction, which constitutes a clear breaking of factorisation. There is about a 20% rise in the neutron rate between photoproduction and deep inelastic scattering, which may be attributed to absorptive rescattering in the gammap system. For 0.64. < x(L) < 0.82, the rate of neutrons is almost independent of the Bjorken scaling variable x and Q(2). However, at lower and higher x(L) values, there is a clear but weak dependence on these variables, thus demonstrating the breaking of limiting fragmentation. The neutron-tagged structure function, F-2(LN(3)) (x, Q(2), x(L)), rises at low values of x in a way similar to that of the inclusive F-2(x, Q(2)) of the proton. The total gammapi cross section and the structure function of the pion, F-2(pi) (x(pi), Q(2)) where x(pi) = x/(1 - x(L)), have been determined using a one-pion-exchange model, up to uncertainties in the normalisation due to the poorly understood pion flux. At fixed Q(2), F-2(pi) has approximately the same x dependence as F-2 of the proton. (C) 2002 Published by Elsevier Science B.V. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Andrews Univ, Berrien Springs, MI 49104 USA. Univ Bologna, Bologna, Italy. Ist Nazl Fis Nucl Bologna, Bologna, Italy. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. Univ Calabria, Dept Phys, I-87036 Cosenza, Italy. Ist Nazl Fis Nucl, I-87036 Cosenza, Italy. Chonnam Natl Univ, Kwangju, South Korea. Columbia Univ, Nevis Labs, Hudson, NY 10027 USA. Inst Nucl Phys, Krakow, Poland. Univ Min & Met Krakow, Fac Phys & Nucl Tech, Krakow, Poland. Jagiellonian Univ, Dept Phys, PL-31007 Krakow, Poland. DESY, D-2000 Hamburg, Germany. DESY Zeuthen, Zeuthen, Germany. Univ Florence, Florence, Italy. Ist Nazl Fis Nucl, I-50125 Florence, Italy. Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany. Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland. Univ Aegean, Dept Engn Management & Finance, Mitilini, Greece. Univ Hamburg, Inst Expt Phys, Hamburg, Germany. Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England. Inst Kernphys, Forschungszentrum Julich, Julich, Germany. KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki, Japan. Minist Educ & Sci Kazakhstan, Inst Phys & Technol, Alma Ata, Kazakhstan. Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain. McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan. Moscow Engn Phys Inst, Moscow 115409, Russia. Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow, Russia. NIKHEF, Amsterdam, Netherlands. Univ Amsterdam, Amsterdam, Netherlands. Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. Univ Oxford, Dept Phys, Oxford, England. Univ Padua, Dipartimento Fis, Padua, Italy. Ist Nazl Fis Nucl, Padua, Italy. Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Polytech Univ, Sagamihara, Kanagawa, Japan. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Ist Nazl Fis Nucl, I-00185 Rome, Italy. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. Seoul Natl Univ, Seoul, South Korea. Univ Siegen, Fachbereich Phys, D-5900 Siegen, Germany. Tel Aviv Univ, Sch Phys, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv, Israel. Univ Tokyo, Dept Phys, Tokyo 113, Japan. Tokyo Metropolitan Univ, Dept Phys, Tokyo, Japan. Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. UCL, Dept Phys & Astron, London, England. Warsaw Univ, Inst Expt Phys, Warsaw, Poland. Inst Nucl Studies, PL-00681 Warsaw, Poland. Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Yale Univ, Dept Phys, New Haven, CT 06520 USA. York Univ, Dept Phys, N York, ON M3J 1P3, Canada. RP Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM b.foster@bristol.ac.uk RI Tassi, Enrico/K-3958-2015; Gladilin, Leonid/B-5226-2011; Suchkov, Sergey/M-6671-2015; dusini, stefano/J-3686-2012; Goncalo, Ricardo/M-3153-2016; Li, Liang/O-1107-2015; Capua, Marcella/A-8549-2015; De Pasquale, Salvatore/B-9165-2008; Wing, Matthew/C-2169-2008; Bashkirov, Vladimir/A-4818-2008; Doyle, Anthony/C-5889-2009; collins-tooth, christopher/A-9201-2012; Ferrando, James/A-9192-2012; Golubkov, Yury/E-1643-2012; Levchenko, B./D-9752-2012; Proskuryakov, Alexander/J-6166-2012; Dementiev, Roman/K-7201-2012; Katz, Uli/E-1925-2013; Wiggers, Leo/B-5218-2015 OI Gladilin, Leonid/0000-0001-9422-8636; dusini, stefano/0000-0002-1128-0664; Goncalo, Ricardo/0000-0002-3826-3442; Li, Liang/0000-0001-6411-6107; Capua, Marcella/0000-0002-2443-6525; Martinez Rodriguez, Manel/0000-0002-9763-9155; Chwastowski, Janusz/0000-0002-6190-8376; Gutsche, Oliver/0000-0002-8015-9622; De Pasquale, Salvatore/0000-0001-9236-0748; Doyle, Anthony/0000-0001-6322-6195; Ferrando, James/0000-0002-1007-7816; Katz, Uli/0000-0002-7063-4418; Wiggers, Leo/0000-0003-1060-0520 NR 106 TC 65 Z9 66 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 EI 1873-1562 J9 NUCL PHYS B JI Nucl. Phys. B PD AUG 19 PY 2002 VL 637 IS 1-3 BP 3 EP 56 AR PII S0550-3213(02)00439-X DI 10.1016/S0550-3213(02)00439-X PG 54 WC Physics, Particles & Fields SC Physics GA 586HJ UT WOS:000177578300001 ER PT J AU Adcox, K Adler, SS Ajitanand, NN Akiba, Y Alexander, J Aphecetche, L Arai, Y Aronson, SH Averbeck, R Awes, TC Barish, KN Barnes, PD Barrette, J Bassalleck, B Bathe, S Baublis, V Bazilevsky, A Belikov, S Bellaiche, FG Belyaev, ST Bennett, MJ Berdnikov, Y Botelho, S Brooks, ML Brown, DS Bruner, N Bucher, D Buesching, H Bumazhnov, V Bunce, G Burward-Hoy, J Butsyk, S Carey, TA Chand, P Chang, J Chang, WC Chavez, LL Chernichenko, S Chi, CY Chiba, J Chiu, M Choudhury, RK Christ, T Chujo, T Chung, MS Chung, P Cianciolo, V Cole, BA D'Enterria, DG David, G Delagrange, H Denisov, A Deshpande, A Desmond, EJ Dietzsch, O Dinesh, BV Drees, A Durum, A Dutta, D Ebisu, K Efremenko, YV El Chenawi, K En'yo, H Esumi, S Ewell, L Ferdousi, T Fields, DE Fokin, SL Fraenkel, Z Franz, A Frawley, AD Fung, SY Garpman, S Ghosh, TK Glenn, A Godoi, AL Goto, Y Greene, SV Grosse Perdekamp, M Gupta, SK Guryn, W Gustafsson, HA Haggerty, JS Hamagaki, H Hansen, AG Hara, H Hartouni, EP Hayano, R Hayashi, N He, X Hemmick, TK Heuser, JM Hibino, M Hill, JC Ho, DS Homma, K Hong, B Hoover, A Ichihara, T Imai, K Ippolitov, MS Ishihara, M Jacak, BV Jang, WY Jia, J Johnson, BM Johnson, SC Joo, KS Kametani, S Kang, JH Kann, M Kapoor, SS Kelly, S Khachaturov, B Khanzadeev, A Kikuchi, J Kim, DJ Kim, HJ Kim, SY Kim, YG Kinnison, WW Kistenev, E Kiyomichi, A Klein-Boesing, C Klinksiek, S Kochenda, L Kochetkov, V Koehler, D Kohama, T Kotchetkov, D Kozlov, A Kroon, PJ Kurita, K Kweon, MJ Kwon, Y Kyle, GS Lacey, R Lajoie, JG Lauret, J Lebedev, A Lee, DM Leitch, MJ Li, XH Li, Z Lim, DJ Liu, MX Liu, X Liu, Z Maguire, CF Mahon, J Makdisi, YI Manko, VI Mao, Y Mark, SK Markacs, S Martinez, G Marx, MD Masaike, A Matathias, F Matsumoto, T McGaughey, PL Melnikov, E Merschmeyer, M Messer, F Messer, M Miake, Y Miller, TE Milov, A Mioduszewski, S Mischke, RE Mishra, GC Mitchell, JT Mohanty, AK Morrison, DP Moss, JM Muhlbacher, F Muniruzzaman, M Murata, J Nagamiya, S Nagasaka, Y Nagle, JL Nakada, Y Nandi, BK Newby, J Nikkinen, L Nilsson, P Nishimura, S Nyanin, AS Nystrand, J O'Brien, E Ogilvie, CA Ohnishi, H Ojha, ID Ono, M Onuchin, V Oskarsson, A Osterman, L Otterlund, I Oyama, K Paffrath, L Palounek, APT Pantuev, VS Papavassiliou, V Pate, SF Peitzmann, T Petridis, AN Pinkenburg, C Pisani, RP Pitukhin, P Plasil, F Pollack, M Pope, K Purschke, ML Ravinovich, I Read, KF Reygers, K Riabov, V Riabov, Y Rosati, M Rose, AA Ryu, SS Saito, N Sakaguchi, A Sakaguchi, T Sako, H Sakuma, T Samsonov, V Sangster, TC Santo, R Sato, HD Sato, S Sawada, S Schlei, BR Schutz, Y Semenov, V Seto, R Shea, TK Shein, I Shibata, TA Shigaki, K Shiina, T Shin, YH Sibiriak, IG Silvermyr, D Sim, KS Simon-Gillo, J Singh, CP Singh, V Sivertz, M Soldatov, A Soltz, RA Sorensen, S Stankus, PW Starinsky, N Steinberg, P Stenlund, E Ster, A Stoll, SP Sugioka, M Sugitate, T Sullivan, JP Sumi, Y Sun, Z Suzuki, M Takagui, EM Taketani, A Tamai, M Tanaka, KH Tanaka, Y Taniguchi, E Tannenbaum, MJ Thomas, J Thomas, JH Thomas, TL Tian, W Tojo, J Torii, H Towell, RS Tserruya, I Tsuruoka, H Tsvetkov, AA Tuli, SK Tydesjo, H Tyurin, N Ushiroda, T van Hecke, HW Velissaris, C Velkovska, J Velkovsky, M Vinogradov, AA Volkov, MA Vorobyov, A Vznuzdaev, E Wang, H Watanabe, Y White, SN Witzig, C Wohn, FK Woody, CL Xie, W Yagi, K Yokkaichi, S Young, GR Yushmanov, IE Zajc, WA Zhang, Z Zhou, S AF Adcox, K Adler, SS Ajitanand, NN Akiba, Y Alexander, J Aphecetche, L Arai, Y Aronson, SH Averbeck, R Awes, TC Barish, KN Barnes, PD Barrette, J Bassalleck, B Bathe, S Baublis, V Bazilevsky, A Belikov, S Bellaiche, FG Belyaev, ST Bennett, MJ Berdnikov, Y Botelho, S Brooks, ML Brown, DS Bruner, N Bucher, D Buesching, H Bumazhnov, V Bunce, G Burward-Hoy, J Butsyk, S Carey, TA Chand, P Chang, J Chang, WC Chavez, LL Chernichenko, S Chi, CY Chiba, J Chiu, M Choudhury, RK Christ, T Chujo, T Chung, MS Chung, P Cianciolo, V Cole, BA D'Enterria, DG David, G Delagrange, H Denisov, A Deshpande, A Desmond, EJ Dietzsch, O Dinesh, BV Drees, A Durum, A Dutta, D Ebisu, K Efremenko, YV El Chenawi, K En'yo, H Esumi, S Ewell, L Ferdousi, T Fields, DE Fokin, SL Fraenkel, Z Franz, A Frawley, AD Fung, SY Garpman, S Ghosh, TK Glenn, A Godoi, AL Goto, Y Greene, SV Grosse Perdekamp, M Gupta, SK Guryn, W Gustafsson, HA Haggerty, JS Hamagaki, H Hansen, AG Hara, H Hartouni, EP Hayano, R Hayashi, N He, X Hemmick, TK Heuser, JM Hibino, M Hill, JC Ho, DS Homma, K Hong, B Hoover, A Ichihara, T Imai, K Ippolitov, MS Ishihara, M Jacak, BV Jang, WY Jia, J Johnson, BM Johnson, SC Joo, KS Kametani, S Kang, JH Kann, M Kapoor, SS Kelly, S Khachaturov, B Khanzadeev, A Kikuchi, J Kim, DJ Kim, HJ Kim, SY Kim, YG Kinnison, WW Kistenev, E Kiyomichi, A Klein-Boesing, C Klinksiek, S Kochenda, L Kochetkov, V Koehler, D Kohama, T Kotchetkov, D Kozlov, A Kroon, PJ Kurita, K Kweon, MJ Kwon, Y Kyle, GS Lacey, R Lajoie, JG Lauret, J Lebedev, A Lee, DM Leitch, MJ Li, XH Li, Z Lim, DJ Liu, MX Liu, X Liu, Z Maguire, CF Mahon, J Makdisi, YI Manko, VI Mao, Y Mark, SK Markacs, S Martinez, G Marx, MD Masaike, A Matathias, F Matsumoto, T McGaughey, PL Melnikov, E Merschmeyer, M Messer, F Messer, M Miake, Y Miller, TE Milov, A Mioduszewski, S Mischke, RE Mishra, GC Mitchell, JT Mohanty, AK Morrison, DP Moss, JM Muhlbacher, F Muniruzzaman, M Murata, J Nagamiya, S Nagasaka, Y Nagle, JL Nakada, Y Nandi, BK Newby, J Nikkinen, L Nilsson, P Nishimura, S Nyanin, AS Nystrand, J O'Brien, E Ogilvie, CA Ohnishi, H Ojha, ID Ono, M Onuchin, V Oskarsson, A Osterman, L Otterlund, I Oyama, K Paffrath, L Palounek, APT Pantuev, VS Papavassiliou, V Pate, SF Peitzmann, T Petridis, AN Pinkenburg, C Pisani, RP Pitukhin, P Plasil, F Pollack, M Pope, K Purschke, ML Ravinovich, I Read, KF Reygers, K Riabov, V Riabov, Y Rosati, M Rose, AA Ryu, SS Saito, N Sakaguchi, A Sakaguchi, T Sako, H Sakuma, T Samsonov, V Sangster, TC Santo, R Sato, HD Sato, S Sawada, S Schlei, BR Schutz, Y Semenov, V Seto, R Shea, TK Shein, I Shibata, TA Shigaki, K Shiina, T Shin, YH Sibiriak, IG Silvermyr, D Sim, KS Simon-Gillo, J Singh, CP Singh, V Sivertz, M Soldatov, A Soltz, RA Sorensen, S Stankus, PW Starinsky, N Steinberg, P Stenlund, E Ster, A Stoll, SP Sugioka, M Sugitate, T Sullivan, JP Sumi, Y Sun, Z Suzuki, M Takagui, EM Taketani, A Tamai, M Tanaka, KH Tanaka, Y Taniguchi, E Tannenbaum, MJ Thomas, J Thomas, JH Thomas, TL Tian, W Tojo, J Torii, H Towell, RS Tserruya, I Tsuruoka, H Tsvetkov, AA Tuli, SK Tydesjo, H Tyurin, N Ushiroda, T van Hecke, HW Velissaris, C Velkovska, J Velkovsky, M Vinogradov, AA Volkov, MA Vorobyov, A Vznuzdaev, E Wang, H Watanabe, Y White, SN Witzig, C Wohn, FK Woody, CL Xie, W Yagi, K Yokkaichi, S Young, GR Yushmanov, IE Zajc, WA Zhang, Z Zhou, S CA PHENIX Collaboration TI Net charge fluctuations in Au+Au interactions root s(NN)=130 GeV SO PHYSICAL REVIEW LETTERS LA English DT Article ID QUARK-GLUON PLASMA; PARTICLE RATIO; COLLISIONS; MULTIPLICITY; SIGNAL AB Data from Au+ Au interactions at s(NN)=130 GeV, obtained with the PHENIX detector at the Relativistic Heavy-Ion Collider, are used to investigate local net charge fluctuations among particles produced near midrapidity. According to recent suggestions, such fluctuations may carry information from the quark-gluon plasma. This analysis shows that the fluctuations are dominated by a stochastic distribution of particles, but are also sensitive to other effects, like global charge conservation and resonance decays. C1 Vanderbilt Univ, Nashville, TN 37235 USA. Acad Sinica, Inst Phys, Taipei 11529, Taiwan. Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India. Brookhaven Natl Lab, Upton, NY 11973 USA. Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India. Univ Calif Riverside, Riverside, CA 92521 USA. China Inst Atom Energy, Beijing, Peoples R China. Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan. Columbia Univ, New York, NY 10027 USA. Nevis Labs, Irvington, NY 10533 USA. Florida State Univ, Tallahassee, FL 32306 USA. Georgia State Univ, Atlanta, GA 30303 USA. Hiroshima Univ, Higashihiroshima 7398526, Japan. Inst High Energy Phys, Protvino, Russia. Iowa State Univ, Ames, IA 50011 USA. High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan. Korea Univ, Seoul 136701, South Korea. Russian Res Ctr, Kurchatov Inst, Moscow, Russia. Kyoto Univ, Kyoto 606, Japan. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Lund Univ, Dept Phys, SE-22100 Lund, Sweden. McGill Univ, Montreal, PQ H3A 2T8, Canada. Univ Munster, Inst Kernphys, D-48149 Munster, Germany. Myongji Univ, Yongin 449728, Kyonggido, South Korea. Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan. Univ New Mexico, Albuquerque, NM 87131 USA. New Mexico State Univ, Las Cruces, NM 88003 USA. SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Petersburg Nucl Phys Inst, Gatchina, Russia. Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil. Univ Nantes, Ecole Mines Nantes, SUBATECH, CNRS,IN2P3, F-44307 Nantes 3, France. St Petersburg State Tech Univ, St Petersburg, Russia. Univ Tennessee, Knoxville, TN 37996 USA. Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. Univ Tokyo, Tokyo, Japan. Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan. Waseda Univ, Adv Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1620044, Japan. Weizmann Inst Sci, IL-76100 Rehovot, Israel. Yonsei Univ, IPAP, Seoul 120749, South Korea. RP Adcox, K (reprint author), Vanderbilt Univ, 221 Kirkland Hall, Nashville, TN 37235 USA. RI seto, richard/G-8467-2011; En'yo, Hideto/B-2440-2015; Hayano, Ryugo/F-7889-2012; HAMAGAKI, HIDEKI/G-4899-2014; Durum, Artur/C-3027-2014; Yokkaichi, Satoshi/C-6215-2017; Taketani, Atsushi/E-1803-2017; Semenov, Vitaliy/E-9584-2017 OI Hayano, Ryugo/0000-0002-1214-7806; Taketani, Atsushi/0000-0002-4776-2315; NR 19 TC 15 Z9 15 U1 6 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 AUG 19 PY 2002 VL 89 IS 8 AR 082301 DI 10.1103/PhysRevLett.89.082301 PG 6 WC Physics, Multidisciplinary SC Physics GA 582FH UT WOS:000177338700012 ER PT J AU Janotti, A Zhang, SB Wei, SH Van de Walle, CG AF Janotti, A Zhang, SB Wei, SH Van de Walle, CG TI Effects of hydrogen on the electronic properties of dilute GaAsN alloys SO PHYSICAL REVIEW LETTERS LA English DT Article ID QUASI-PARTICLE ENERGIES; MOLECULAR-BEAM EPITAXY; CRYSTALLINE SILICON; SOLAR-CELLS; SEMICONDUCTORS; GAS; COMPLEXES; GAINNAS AB Nitrogen has profound effects on the electronic structure of GaAs, as only a few percent of N can drastically lower the band gap. It is, however, not recognized that the same amount of N can also qualitatively alter the electronic behavior of hydrogen: First-principles calculations reveal that, in GaAsN, a H atom bonds to N and can act as a donor in its own right, whereas in GaAs and GaN, H is amphoteric, causing passivation instead. At high Fermi energy and H concentration, a N complex with two H was found to have lower energy than the single-H configuration. By removing the effect of N, this electrically inactive complex restores the gap of GaAs. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Palo Alto Res Ctr, Palo Alto, CA 94304 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Van de Walle, Chris/A-6623-2012; Krausnick, Jennifer/D-6291-2013; Schaff, William/B-5839-2009; Zhang, Shengbai/D-4885-2013; Janotti, Anderson/F-1773-2011 OI Van de Walle, Chris/0000-0002-4212-5990; Zhang, Shengbai/0000-0003-0833-5860; Janotti, Anderson/0000-0001-5028-8338 NR 33 TC 75 Z9 75 U1 1 U2 16 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 19 PY 2002 VL 89 IS 8 AR 086403 DI 10.1103/PhysRevLett.89.086403 PG 4 WC Physics, Multidisciplinary SC Physics GA 582FH UT WOS:000177338700041 PM 12190488 ER PT J AU Miao, JW Ishikawa, T Johnson, B Anderson, EH Lai, B Hodgson, KO AF Miao, JW Ishikawa, T Johnson, B Anderson, EH Lai, B Hodgson, KO TI High resolution 3D x-ray diffraction microscopy SO PHYSICAL REVIEW LETTERS LA English DT Article ID PHASE RETRIEVAL; ZONE PLATES AB We have imaged a 2D buried Ni nanostructure at 8 nm resolution using coherent x-ray diffraction and the oversampling phasing method. By employing a 3D imaging reconstruction algorithm, for the first time we have experimentally determined the 3D structure of a noncrystalline nanostructured material at 50 nm resolution. The 2D and 3D imaging resolution is currently limited by the exposure time and the computing power, while the ultimate resolution is limited by the x-ray wavelengths. We believe these results pave the way for the development of atomic resolution 3D x-ray diffraction microscopy. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. SPring8 RIKEN, Mikazuki, Hyogo 6795148, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. Stanford Univ, Dept Chem, Stanford, CA 94305 USA. RP Miao, JW (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. RI Ishikawa, Tetsuya/I-4775-2012 OI Ishikawa, Tetsuya/0000-0002-6906-9909 NR 21 TC 206 Z9 212 U1 4 U2 36 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 AUG 19 PY 2002 VL 89 IS 8 AR 088303 DI 10.1103/PhysRevLett.89.088303 PG 4 WC Physics, Multidisciplinary SC Physics GA 582FH UT WOS:000177338700059 PM 12190506 ER PT J AU Park, SH Sposito, G AF Park, SH Sposito, G TI Structure of water adsorbed on a mica surface SO PHYSICAL REVIEW LETTERS LA English DT Article ID MONTE-CARLO SIMULATION; INTERLAYER STRUCTURE; MOLECULAR-DYNAMICS; MOBILITY AB Monte Carlo simulations of hydration water on the mica (001) surface under ambient conditions revealed water molecules bound closely to the ditrigonal cavities in the surface, with a lateral distribution of approximately one per cavity, and water molecules (interposed between K+ counter ions) in a layer situated about 2.5 Angstrom from a surface O along a direction normal to the (001) plane. The calculated water O density profile was in quantitative agreement with recent x-ray reflectivity measurements indicating strong lateral ordering of the hydration water but liquidlike disorder otherwise. C1 Lawrence Berkeley Natl Lab, Div Earth Sci, Dept Geochem, Berkeley, CA 94720 USA. RP Park, SH (reprint author), Lawrence Berkeley Natl Lab, Div Earth Sci, Dept Geochem, Berkeley, CA 94720 USA. NR 18 TC 108 Z9 110 U1 3 U2 31 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 AUG 19 PY 2002 VL 89 IS 8 AR 085501 DI 10.1103/PhysRevLett.89.085501 PG 3 WC Physics, Multidisciplinary SC Physics GA 582FH UT WOS:000177338700031 PM 12190478 ER PT J AU Radetic, T Lancon, F Dahmen, U AF Radetic, T Lancon, F Dahmen, U TI Chevron defect at the intersection of grain boundaries with free surfaces in Au SO PHYSICAL REVIEW LETTERS LA English DT Article ID TRANSMISSION ELECTRON-MICROSCOPY; METALS; STABILITY; EVOLUTION; GROWTH; MODEL; GOLD AB We have identified a new defect at the intersection between grain boundaries and surfaces in Au using atomic resolution transmission electron microscopy. At the junction line of 90degrees <110> tilt grain boundaries of (110)-(001) orientation with the free surface, a small segment of the grain boundary, about 1 nm in length, dissociates into a triangular region with a chevronlike stacking disorder and a distorted hcp structure. The structure and stability of these defects are confirmed by atomistic simulations, and we point out the relationship with the one-dimensional incommensurate structure of the grain boundary. C1 LBNL, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. RP LBNL, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. RI Lancon, Frederic/B-2577-2009 OI Lancon, Frederic/0000-0002-6367-4462 NR 27 TC 22 Z9 22 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 19 PY 2002 VL 89 IS 8 AR 085502 DI 10.1103/PhysRevLett.89.085502 PG 4 WC Physics, Multidisciplinary SC Physics GA 582FH UT WOS:000177338700032 PM 12190479 ER PT J AU Robey, HF Perry, TS Klein, RI Kane, JO Greenough, JA Boehly, TR AF Robey, HF Perry, TS Klein, RI Kane, JO Greenough, JA Boehly, TR TI Experimental investigation of the three-dimensional interaction of a strong shock with a spherical density inhomogeneity SO PHYSICAL REVIEW LETTERS LA English DT Article ID ADAPTIVE MESH REFINEMENT; INTERSTELLAR CLOUDS; WAVES; LASER AB Laser-driven experiments are described which probe the interaction of a very strong shock with a spherical density inhomogeneity. The interaction is viewed from two orthogonal directions enabling visualization of both the initial distortion of the sphere into a double vortex ring structure as well as the onset of an azimuthal instability that ultimately results in the three-dimensional breakup of the ring. The experimental results are compared with 3D numerical simulations and are shown to be in remarkable agreement with the incompressible theory of Widnall et al. [J. Fluid Mech. 66, 35 (1974)]. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. RP Robey, HF (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RI Perry, Theodore/K-3333-2014 OI Perry, Theodore/0000-0002-8832-2033 NR 11 TC 26 Z9 27 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 AUG 19 PY 2002 VL 89 IS 8 AR 085001 DI 10.1103/PhysRevLett.89.085001 PG 4 WC Physics, Multidisciplinary SC Physics GA 582FH UT WOS:000177338700027 PM 12190474 ER PT J AU Swadener, JG Baskes, MI Nastasi, M AF Swadener, JG Baskes, MI Nastasi, M TI Molecular dynamics simulation of brittle fracture in silicon SO PHYSICAL REVIEW LETTERS LA English DT Article ID CRYSTALS AB Brittle fracture in silicon is simulated with molecular dynamics utilizing a modified embedded atom method potential. The simulations produce propagating crack speeds that are in agreement with previous experimental results over a large range of fracture energy. The dynamic fracture toughness is found to be equal to the energy consumed by creating surfaces and lattice defects in agreement with theoretical predictions. The dynamic fracture toughness is approximately 1/3 of the static strain energy release rate, which results in a limiting crack speed of 2/3 of the Rayleigh wave speed. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Swadener, JG (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. OI Swadener, John G/0000-0001-5493-3461 NR 21 TC 73 Z9 73 U1 0 U2 17 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 AUG 19 PY 2002 VL 89 IS 8 AR 085503 DI 10.1103/PhysRevLett.89.085503 PG 4 WC Physics, Multidisciplinary SC Physics GA 582FH UT WOS:000177338700033 PM 12190480 ER PT J AU Urbano, RR Pagliuso, PG Rettori, C Kopelevich, Y Moreno, NO Sarrao, JL AF Urbano, RR Pagliuso, PG Rettori, C Kopelevich, Y Moreno, NO Sarrao, JL TI Field distribution and flux-line depinning in MgB2 SO PHYSICAL REVIEW LETTERS LA English DT Article ID ELECTRON-SPIN-RESONANCE; SUPERCONDUCTING MGB2; BORON AB We report the first observation of the field distribution and flux-line lattice (FLL) depinning in the vortex-state (VS) of a type-II superconductor probed by conduction electron spin resonance (CESR). CESR was performed in MgB (2) (T(c)similar or equal to39 K) at 4.1 GHz (1455 Oe) and 9.5 GHz (3390 Oe). The field distribution, n(H), and a standard deviation of sigmasimilar to14 Oe (at 28 K/4.1 GHz and at 7 K/9.5 GHz) were inferred, respectively, from the distortion and broadening of the CESR in the VS. For both frequencies, the FLL depinning temperature was determined. C1 UNICAMP, IFGW, BR-13083970 Campinas, SP, Brazil. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Urbano, RR (reprint author), UNICAMP, IFGW, BR-13083970 Campinas, SP, Brazil. RI Rettori, Carlos/C-3966-2012; Pagliuso, Pascoal/C-9169-2012; Urbano, Ricardo/F-5017-2012; Moreno, Nelson/H-1708-2012; Inst. of Physics, Gleb Wataghin/A-9780-2017 OI Rettori, Carlos/0000-0001-6692-7915; Moreno, Nelson/0000-0002-1672-4340; NR 32 TC 8 Z9 8 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 AUG 19 PY 2002 VL 89 IS 8 AR 087602 DI 10.1103/PhysRevLett.89.087602 PG 4 WC Physics, Multidisciplinary SC Physics GA 582FH UT WOS:000177338700053 PM 12190500 ER PT J AU Wu, B Niu, Q AF Wu, B Niu, Q TI Dynamical or Landau instability? SO PHYSICAL REVIEW LETTERS LA English DT Editorial Material ID EINSTEIN C1 Univ Texas, Dept Phys, Austin, TX 78712 USA. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Wu, B (reprint author), Univ Texas, Dept Phys, Austin, TX 78712 USA. RI Wu, Biao/B-3329-2008; Minardi, Francesco/A-3528-2011; Niu, Qian/G-9908-2013; Cataliotti, Francesco/K-4772-2015 OI Wu, Biao/0000-0001-9229-5894; Minardi, Francesco/0000-0001-6161-8881; Cataliotti, Francesco/0000-0003-4458-7977 NR 3 TC 22 Z9 22 U1 2 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 AUG 19 PY 2002 VL 89 IS 8 AR 088901 DI 10.1103/PhysRevLett.89.088901 PG 1 WC Physics, Multidisciplinary SC Physics GA 582FH UT WOS:000177338700060 PM 12190507 ER PT J AU Alivisatos, AP AF Alivisatos, AP TI Inorganic nanorod liquid crystals. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 002-PHYS BP U294 EP U294 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301503 ER PT J AU Anderson, RR Martello, DV White, CM Eatough, DJ AF Anderson, RR Martello, DV White, CM Eatough, DJ TI NETL's ambient air fine-particulate characterization program: First year results. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. Brigham Young Univ, Dept Biochem & Chem, Provo, UT 84602 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 081-FUEL BP U569 EP U569 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202912 ER PT J AU Ashbaugh, H AF Ashbaugh, H TI Effects of solute size and attractive interactions on water structure near hydrophobic solutes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Grp T12 Theoret Chem & Mol Phys, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 241-COLL BP U434 EP U434 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202189 ER PT J AU Assefa, Z Haire, RG Raison, PE AF Assefa, Z Haire, RG Raison, PE TI Excited state host-guest interaction in lanthanide-doped zirconia. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, CSD, Oak Ridge, TN 37830 USA. CEA, DRN, DEC, SPUA,LACA,Commissariat Energie Atom, F-13108 Cadarache, France. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 300-INOR BP U689 EP U689 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203541 ER PT J AU Aubert, JH AF Aubert, JH TI Removable adhesives based upon reversible Diels-Alder adducts. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 593-POLY BP U459 EP U459 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302468 ER PT J AU Autrey, T Xantheas, SS Li, LY Linehan, JC Franz, JA Katakis, D Mitsopoulou, C Sofianos, Z Bitterwolf, TE AF Autrey, T Xantheas, SS Li, LY Linehan, JC Franz, JA Katakis, D Mitsopoulou, C Sofianos, Z Bitterwolf, TE TI Hydrogen from water: Photocatalytic splitting of water with visible light. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA. Univ Athens, Dept Chem, GR-10679 Athens, Greece. Univ Idaho, Dept Chem, Moscow, ID 83843 USA. RI Xantheas, Sotiris/L-1239-2015 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 AUG 18 PY 2002 VL 224 MA 141-FUEL BP U579 EP U579 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202972 ER PT J AU Bakac, A Pestovsky, O AF Bakac, A Pestovsky, O TI Chromium-based catalytic oxidation of organic substrates with molecular oxygen. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 459-INOR BP U713 EP U713 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203700 ER PT J AU Baker, GA Baker, SN McCleskey, TM Brauns, EB AF Baker, GA Baker, SN McCleskey, TM Brauns, EB TI Aspects of chemical recognition and biosolvation within room temperature ionic liquids. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. RI McCleskey, Thomas/J-4772-2012 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 AUG 18 PY 2002 VL 224 MA 061-IEC BP U620 EP U620 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203136 ER PT J AU Balachandran, U Lee, TH Wang, S Zhang, G Picciolo, JJ Dusek, JT Dorris, SE AF Balachandran, U Lee, TH Wang, S Zhang, G Picciolo, JJ Dusek, JT Dorris, SE TI Recent advances in the development of dense ceramic membranes for hydrogen separation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Ceram Sect, Div Energy Technol, Argonne, IL 60439 USA. NR 0 TC 1 Z9 1 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 169-FUEL BP U583 EP U583 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203000 ER PT J AU Balema, VP Pecharsky, VK AF Balema, VP Pecharsky, VK TI Highly selective solvent-free mechanochemical synthesis in main group elements chemistry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Ames Lab, Ames, IA 50011 USA. Dept Mat Sci & Engn, 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 AUG 18 PY 2002 VL 224 MA 671-INOR BP U746 EP U746 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203912 ER PT J AU Bao, L Mahurin, S Dai, S AF Bao, L Mahurin, S Dai, S TI Silver-doped sol-gel film developed by molecular recognition for detection of radionuclides by surface enhanced raman spectroscopy (sers). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 163-ANYL BP U138 EP U138 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200588 ER PT J AU Barker, JR Lohr, LL Shroll, RM Reading, S AF Barker, JR Lohr, LL Shroll, RM Reading, S TI A master equation model for alkyl nitrate yields from the reaction of alkyl peroxy radicals with No-2. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA. Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 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 AUG 18 PY 2002 VL 224 MA 137-PHYS BP U315 EP U315 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301636 ER PT J AU Barton, CJ Brenner, DS Shapira, D Casten, RF Caprio, M Cooper, JR Zamfir, NV Beausang, C Novak, JR Krucken, R Gill, RL Lewis, TA Lemmon, R Warner, DD AF Barton, CJ Brenner, DS Shapira, D Casten, RF Caprio, M Cooper, JR Zamfir, NV Beausang, C Novak, JR Krucken, R Gill, RL Lewis, TA Lemmon, R Warner, DD TI Coulomb excitation experiments with radioactive nuclear beams. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CLRC, Daresbury Lab, Surface & Nucl Div, Warrington WA4 4AD, Cheshire, England. Clark Univ, Dept Chem, Worcester, MA 01610 USA. Oak Ridge Natl Lab, Div Nucl Phys, Oak Ridge, TN USA. Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RI Zamfir, Nicolae Victor/F-2544-2011; Kruecken, Reiner/A-1640-2013 OI Kruecken, Reiner/0000-0002-2755-8042 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 060-NUCL BP U93 EP U93 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300490 ER PT J AU Bell, RC Wang, HF Iedema, MJ Cowin, JP AF Bell, RC Wang, HF Iedema, MJ Cowin, JP TI Sculpting nano-scale liquid interfaces. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 EMSL, Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 039-PHYS BP U299 EP U300 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301540 ER PT J AU Blevins, LG Yang, NYC Mulholland, GW Davis, RW Steel, EB AF Blevins, LG Yang, NYC Mulholland, GW Davis, RW Steel, EB TI Early soot from inverse diffusion flames. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 135-FUEL BP U578 EP U578 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202966 ER PT J AU Bloom, I Polzin, EG Swift, WM AF Bloom, I Polzin, EG Swift, WM TI Fuel cell testing at Argonne National Laboratory. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 073-FUEL BP U567 EP U567 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202904 ER PT J AU Bockrath, BC Smith, MR Bittner, EW AF Bockrath, BC Smith, MR Bittner, EW TI Activating single-walled carbon nanotubes for hydrogen adsorption. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Energy Technol Ctr, Fuels & Proc Chem Div, Pittsburgh, PA 15236 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 154-FUEL BP U581 EP U581 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202985 ER PT J AU Bondurant, B Sasaki, DY AF Bondurant, B Sasaki, DY TI Specific binding and fluorescence detection of proteins to lipid bilayer membranes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Biomol & Interfaces 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 AUG 18 PY 2002 VL 224 MA 346-COLL BP U450 EP U450 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202292 ER PT J AU Bontchev, RP Nenoff, TM AF Bontchev, RP Nenoff, TM TI New series of organic-inorganic niobium oxofluorides SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 540-INOR BP U725 EP U725 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203781 ER PT J AU Bontchev, RP Bonhomme, F Maxwell, RS Nenoff, TM AF Bontchev, RP Bonhomme, F Maxwell, RS Nenoff, TM TI Synthesis and characterization of a new series of cobalt aluminum phosphates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 339-INOR BP U695 EP U695 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203580 ER PT J AU Bontchev, RP Nenoff, TM AF Bontchev, RP Nenoff, TM TI Synthesis and characterization of CsCo3(PO4)(2)(OH) - A new cesium cobalt phosphate with open-framework structure. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, 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 AUG 18 PY 2002 VL 224 MA 337-INOR BP U695 EP U695 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203578 ER PT J AU Bontchev, RP Krumhansl, JL Voigt, J Nenoff, TM AF Bontchev, RP Krumhansl, JL Voigt, J Nenoff, TM TI Intercalation and ion exchange properties of hydrotalcite Mg1-xAlx(OH)(2)A(x).nH(2)O (A=No-3(-), Cl-, Br-, I-) derivatives. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 048-COLL BP U403 EP U403 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201996 ER PT J AU Borup, R Perry, WL Inbody, M Tafoya, JI AF Borup, R Perry, WL Inbody, M Tafoya, JI TI Fuel processing for fuel cells: Fuel effects on fuel processor durability and carbon formation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, ESA, AET, Los Alamos, NM 87544 USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 056-FUEL BP U564 EP U565 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202887 ER PT J AU Brady, ED Tait, CD Keogh, DW Gordon, PL Scott, BL Sauer, NN AF Brady, ED Tait, CD Keogh, DW Gordon, PL Scott, BL Sauer, NN TI Beryllium carboxylates: Synthesis and characterization by vibrational spectroscopy and X-ray diffraction. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, GT Seaborg Inst, 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 AUG 18 PY 2002 VL 224 MA 674-INOR BP U747 EP U747 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203915 ER PT J AU Brennaman, MK Alstrum-Acevedo, JH Jang, P Fleming, CN Meyer, TJ Papanikolas, JM AF Brennaman, MK Alstrum-Acevedo, JH Jang, P Fleming, CN Meyer, TJ Papanikolas, JM TI Evidence for the existence of a two state equilibrium in the photoexcited state of [Ru(bpy)(2)dppz](2+). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 335-PHYS BP U346 EP U346 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301832 ER PT J AU Brinker, CJ AF Brinker, CJ TI Self-assembled porous composite nanostructures for electronics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Adv Mat 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 AUG 18 PY 2002 VL 224 MA 136-PMSE BP U509 EP U510 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302776 ER PT J AU Brownawell, BJ Ferguson, PL Benotti, MJ AF Brownawell, BJ Ferguson, PL Benotti, MJ TI Applications of HPLC-MS in marine organic geochemistry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SUNY Stony Brook, Marine Sci Res Ctr, Stony Brook, NY 11794 USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 008-ENVR BP U518 EP U518 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202624 ER PT J AU Buelna, G Nenoff, TM Abraham, IC Jarek, RL Thornberg, SM Trudell, DE AF Buelna, G Nenoff, TM Abraham, IC Jarek, RL Thornberg, SM Trudell, DE TI Energy efficient catalytic reaction for synthesis of cumene. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Micrototal Analyt Syst 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 AUG 18 PY 2002 VL 224 MA 018-PETR BP U269 EP U270 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301433 ER PT J AU Buelna, G Nenoff, TM Abraham, IC Jarek, RL Thornberg, M Trudell, DE AF Buelna, G Nenoff, TM Abraham, IC Jarek, RL Thornberg, M Trudell, DE TI Energy efficient catalytic reaction for synthesis of cumene. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Environm Monitoring & Characterizat, Albuquerque, NM 87185 USA. Sandia Natl Labs, Informat Discovery Extract & Anal, Albuquerque, NM 87185 USA. Sandia Natl Labs, Total Syst Performance Asmt, Albuquerque, NM 87185 USA. Sandia Natl Labs, Micro Total Analyt Syst 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 AUG 18 PY 2002 VL 224 MA 330-COLL BP U447 EP U448 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202276 ER PT J AU Buelna, GQ AF Buelna, GQ TI Energy efficient catalytic reaction for synthesis of cumene. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 032-PETR BP U272 EP U272 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301447 ER PT J AU Bullock, RM Voges, MH Schlaf, M Kimmich, BFM Ghosh, P Fagan, PJ Hauptman, E AF Bullock, RM Voges, MH Schlaf, M Kimmich, BFM Ghosh, P Fagan, PJ Hauptman, E TI Controlling proton and hydride transfer reactions of metal hydrides: Catalytic ionic hydrogenations and deoxygenations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. DuPont Co Inc, Cent Res & Dev, Wilmington, DE 19898 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 294-INOR BP U688 EP U688 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203535 ER PT J AU Bustamante, F Enick, RM Rothenberger, KS Howard, BH Ciocco, MV Morreale, BM AF Bustamante, F Enick, RM Rothenberger, KS Howard, BH Ciocco, MV Morreale, BM TI Kinetic study of the reverse water gas shift reaction in high-temperature, high-pressure homogeneous systems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Pittsburgh, NETL Res Associate, Pittsburgh, PA 15261 USA. US DOE, NETL, Washington, DC 20585 USA. NR 0 TC 0 Z9 0 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 098-FUEL BP U571 EP U571 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202929 ER PT J AU Cahill, TA Cliff, SS Shackelford, JF Kelly, PB Bench, G Perry, KD AF Cahill, TA Cliff, SS Shackelford, JF Kelly, PB Bench, G Perry, KD TI Aerosols from the World Trade Center collapse site. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Davis, Dept Appl Sci, DELTA Grp, Davis, CA 95616 USA. Univ Calif Davis, Dept Chem Engn & Mat Sci, DELTA Grp, Davis, CA 95616 USA. Univ Calif Davis, Dept Chem, DELTA Grp, Davis, CA 95616 USA. Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA. Univ Utah, Dept Meteorol, DELTA Grp, Salt Lake City, UT 84112 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 161-PHYS BP U318 EP U318 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301659 ER PT J AU Campbell, AA Li, S Delgado, MA DeJong, ES AF Campbell, AA Li, S Delgado, MA DeJong, ES TI Biomimetic calcium phosphate coatings for orthopedic implant applications. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Pacific NW Natl Lab, Dept Mat Sci, Richland, WA 99352 USA. USA, Inst Surg Res, Extrem Trauma Study Branch, Washington, DC USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 005-PRES BP U26 EP U26 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200006 ER PT J AU Carmichael, GR Uno, I Tang, Y Kurata, G Streets, D Woo, JH Holdzkom, J AF Carmichael, GR Uno, I Tang, Y Kurata, G Streets, D Woo, JH Holdzkom, J TI Recent advances in the use of chemical transport models in atmospheric chemistry studies. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Iowa, Ctr Global & Reg Environm Res, Iowa City, IA 52242 USA. Kyushu Univ, Fukuoka 812, Japan. Toyohashi Univ Technol, Toyohashi, Aichi, Japan. Argonne Natl Lab, Argonne, IL 60439 USA. Seoul Natl Univ, Seoul, South Korea. RI Uno, Itsushi/B-5952-2011; Kyushu, RIAM/F-4018-2015 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 044-PHYS BP U300 EP U300 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301545 ER PT J AU Castro, A AF Castro, A TI Ultrasensitive detection of specific nucleic acids sequence by polymerase nucleotide incorporation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Biophys Grp, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 164-ANYL BP U138 EP U138 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200589 ER PT J AU Casuccio, GS Lersch, TL Schlaegle, SF Martello, DV AF Casuccio, GS Lersch, TL Schlaegle, SF Martello, DV TI Characterization of ambient carbonaceous particles using electron microscopy techniques. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 RJ Lee Grp Inc, Monroeville, PA 15146 USA. US DOE, Natl Energy Technol Lab, Washington, DC 20585 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 082-FUEL BP U569 EP U569 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202913 ER PT J AU Caya, SK Kelly, PB Riddle, SG Cahill, TA Shackelford, JF Bench, G AF Caya, SK Kelly, PB Riddle, SG Cahill, TA Shackelford, JF Bench, G TI Methods for time-resolved sampling and analysis of size-separated ambient atmospheric aerosols. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. Univ Calif Davis, Dept Appl Sci, DELTA Grp, Davis, CA 95616 USA. Univ Calif Davis, Dept Chem Engn & Mat Sci, DELTA Grp, Davis, CA 95616 USA. Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, DELTA Grp, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 050-ANYL BP U120 EP U120 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200475 ER PT J AU Cejka, CL Bryant, JL AF Cejka, CL Bryant, JL TI Technology commercialization at the Pacific Northwest National Laboratory (PNNL). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PNNL, Technol Commercializat, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 002-BMGT BP U254 EP U254 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201193 ER PT J AU Chen, JZ Mohan, D Balgley, BM Baehrecke, EH Shen, YF Smith, RD Lee, CS AF Chen, JZ Mohan, D Balgley, BM Baehrecke, EH Shen, YF Smith, RD Lee, CS TI Isoelectric focusing-based multidimensional separation platforms with nano-ESI-MS/MS for proteomic studies of steroid-induced programmed cell death during development. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA. Univ Maryland, Inst Biotechnol, College Pk, MD 20742 USA. Pacific NW Natl Lab, Richland, WA USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 010-BIOT BP U199 EP U199 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200874 ER PT J AU Chin, CJ Vithayaveroj, V Yiacoumi, S Tsouris, C AF Chin, CJ Vithayaveroj, V Yiacoumi, S Tsouris, C TI Atomic force microscopy measurements of colloidal surface forces during sorption of copper ions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Separat & Mat Res Grp, Oak Ridge, TN 37831 USA. Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA. Virginia Polytech Inst & State Univ, Dept Chem, Blacksburg, VA 24060 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 093-COLL BP U410 EP U410 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202041 ER PT J AU Clearfield, A Tripathi, A Nyman, M Medvedev, D AF Clearfield, A Tripathi, A Nyman, M Medvedev, D TI Niobium substituted silicotitanates: Ion exchangers for nuclear waste remediation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA. Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 346-INOR BP U696 EP U696 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203587 ER PT J AU Coates, K Ginosar, DM Rollins, HW Hyde, TA AF Coates, K Ginosar, DM Rollins, HW Hyde, TA TI On-line analysis of solute concentrations for the production of nano particles from supercritical solutions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. RI Rollins, Harry/B-6327-2017 OI Rollins, Harry/0000-0002-3926-7445 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 003-TECH BP U356 EP U356 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201745 ER PT J AU Cortez, MM Ingram, JC Fujita, Y Avci, R AF Cortez, MM Ingram, JC Fujita, Y Avci, R TI Secondary ion mass spectrometry of biotic and abiotic co-precipitation of strontium and calcium carbonate. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 INEEL, Dept Chem, Idaho Falls, ID 83415 USA. INEEL, Dept Biotechnol, Idaho Falls, ID 83415 USA. Montana State Univ, Dept Phys, Bozeman, MT USA. RI Fujita, Yoshiko/S-2007-2016 OI Fujita, Yoshiko/0000-0002-4472-4102 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 004-TECH BP U356 EP U356 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201746 ER PT J AU Cugini, A Bockrath, BC Howard, BH Killmeyer, RP Rothenburger, KS Taylor, C AF Cugini, A Bockrath, BC Howard, BH Killmeyer, RP Rothenburger, KS Taylor, C TI NETL's ultra-clean fuels focus area: An overview. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, 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 AUG 18 PY 2002 VL 224 MA 041-FUEL BP U562 EP U562 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202872 ER PT J AU Dai, S AF Dai, S TI Ionic liquids for advanced material syntheses. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 072-IEC BP U622 EP U622 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203147 ER PT J AU de Jong, WA Cho, HM Soderquist, CZ Wiley, WR AF de Jong, WA Cho, HM Soderquist, CZ Wiley, WR TI Combined nmr experiments and computational studies on perrhenates and pertechnetates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 248-INOR BP U681 EP U681 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203489 ER PT J AU de Jong, WA Cho, HM Soderquist, CZ Bridges, NN Abrefah, J AF de Jong, WA Cho, HM Soderquist, CZ Bridges, NN Abrefah, J TI Experiments on, and computational modeling of NMR parameters in crystals containing lanthanides and actinides. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, WR Wiley 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 AUG 18 PY 2002 VL 224 MA 664-INOR BP U745 EP U745 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203905 ER PT J AU Dierker, S AF Dierker, S TI Synchrotron radiation and its applications. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 232-ANYL BP U148 EP U148 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200655 ER PT J AU Dietz, ML Dzielawa, JA Rickert, PG Jensen, MP Firestone, MA AF Dietz, ML Dzielawa, JA Rickert, PG Jensen, MP Firestone, MA TI Conventional aspects of unconventional solvents: Room-temperature ionic liquids as ion exchangers and ionic surfactants. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Div Sci Mat, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 086-IEC BP U624 EP U624 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203161 ER PT J AU Ding, M Sullivan, EJ Reimus, PW Meijer, A Scism, CD AF Ding, M Sullivan, EJ Reimus, PW Meijer, A Scism, CD TI Preliminary study of mineralogical characteristics of Yucca Mountain alluvium and effects on Neptunium(V) retention. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, EET, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Yucca Mt Project Off, EYMP, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 127-ENVR BP U537 EP U537 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202743 ER PT J AU Disselkamp, RS Barrie, L Shutthanandan, S Cliff, SS Cahill, T Bench, G AF Disselkamp, RS Barrie, L Shutthanandan, S Cliff, SS Cahill, T Bench, G TI Size-segregated aerosol composition and mass loading of atmospheric particles as part of the Pacific northwest 2001(PNW2001) air quality study in Puget Sound, WA. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Pacific NW Natl Lab, Atmospher Sci Tech Grp, Richland, WA 99352 USA. Univ Calif Davis, DELTA Grp, Davis, CA 95616 USA. 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 AUG 18 PY 2002 VL 224 MA 373-PHYS BP U351 EP U351 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301868 ER PT J AU Dixon, DA Feller, DF Zhang, CG Francisco, JS AF Dixon, DA Feller, DF Zhang, CG Francisco, JS TI Predicting absolute free energies of solvation for the proton and the hydroxide ion. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 214-COMP BP U501 EP U501 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202539 ER PT J AU Dixon, DA Zhan, CG Wiley, WR AF Dixon, DA Zhan, CG Wiley, WR TI Theoretical calculations of molecular photoabsorption in the vacuum ultraviolet as an aid to designing new photoresists. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, WR Wiley 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 AUG 18 PY 2002 VL 224 MA 014-FLUO BP U546 EP U546 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202783 ER PT J AU Doctor, RD Marshall, CL Wade, DC AF Doctor, RD Marshall, CL Wade, DC TI Hydrogen cycle employing calcium-bromine and electrolysis. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 142-FUEL BP U579 EP U579 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202973 ER PT J AU Doorn, SK Fields, RE Hu, H Hamon, MA Haddon, RC Selegue, JP Majidi, V O'Connell, M Haroz, E Ausman, KD Smalley, RE AF Doorn, SK Fields, RE Hu, H Hamon, MA Haddon, RC Selegue, JP Majidi, V O'Connell, M Haroz, E Ausman, KD Smalley, RE TI Geometry-based separations of carbon nanotubes using capillary electrophoresis. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA. Univ Calif Riverside, Dept Environm Chem & Engn, Riverside, CA 92521 USA. Univ Kentucky, Dept Chem, Adv Carbon Mat Ctr, Lexington, KY 40506 USA. Rice Univ, Dept Chem, Houston, TX 77251 USA. RI Haddon, Robert/A-2528-2008 OI Haddon, Robert/0000-0002-7903-5139 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 054-COLL BP U404 EP U404 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202002 ER PT J AU Dupuis, M Camaioni, DM Chipman, DM Bentley, J AF Dupuis, M Camaioni, DM Chipman, DM Bentley, J TI Towards ab initio cavities for dielectric continuum solvation models. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA. RI Chipman, Daniel/C-7704-2015 OI Chipman, Daniel/0000-0002-9992-6684 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 216-COMP BP U501 EP U502 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202541 ER PT J AU Elich, JM Hastings, D Van Derveer, W Raffaelle, RP Gennett, T Heben, MJ Alleman, JL Dillon, AC AF Elich, JM Hastings, D Van Derveer, W Raffaelle, RP Gennett, T Heben, MJ Alleman, JL Dillon, AC TI Comprehensive investigation of the laser synthesis of single-wall carbon nanotubes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Nanopower Res Labs, Rochester, NY 14623 USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 200-COLL BP U427 EP U427 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202148 ER PT J AU Ellett, M Singleton, MF AF Ellett, M Singleton, MF TI Formation of the chemistry fiends at the University of California, Berkeley in 1902: The founding chapter of Iota Sigma Pi. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Hercules Middle High Sch, Dept Sci, Benicia, CA 94510 USA. 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 AUG 18 PY 2002 VL 224 MA 012-HIST BP U595 EP U595 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203051 ER PT J AU Elliott, JB Moretto, LG Phair, L Wozniak, GJ AF Elliott, JB Moretto, LG Phair, L Wozniak, GJ TI Experimental determination of the phase diagram of nuclear matter. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, 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 AUG 18 PY 2002 VL 224 MA 053-NUCL BP U92 EP U92 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300483 ER PT J AU Emerson, JA Moody, NR Giunta, RK AF Emerson, JA Moody, NR Giunta, RK TI Advances in assembling microsystems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Organ Mat 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 AUG 18 PY 2002 VL 224 MA 047-PMSE BP U495 EP U496 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302688 ER PT J AU Esbensen, H AF Esbensen, H TI Coulomb dissociation of halo nuclei. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 034-NUCL BP U90 EP U90 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300464 ER PT J AU Evans, RJ Chornet, E Czernik, S Feik, C French, R Phillips, S Abedi, J Yeboah, YD Day, D Howard, J McGee, D Realff, MJ AF Evans, RJ Chornet, E Czernik, S Feik, C French, R Phillips, S Abedi, J Yeboah, YD Day, D Howard, J McGee, D Realff, MJ TI Renewable hydrogen production by catalytic steam reforming of peanut shells pyrolysis products. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Clark Atlanta Univ, Dept Engn, Atlanta, GA 30314 USA. Georgia Inst Technol, Sch Chem Engn, Atlanta, GA 30332 USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 143-FUEL BP U579 EP U579 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202974 ER PT J AU Fan, HY Hartshorn, C Brinker, CJ AF Fan, HY Hartshorn, C Brinker, CJ TI Nanomechanics of new self-assembled nanostructures. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Adv Mat Lab, Albuquerque, NM 87106 USA. Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 335-COLL BP U448 EP U448 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202281 ER PT J AU Farrington, JW Wade, TL Reddy, CM Mills, GL AF Farrington, JW Wade, TL Reddy, CM Mills, GL TI Quinn, "quinnones" and 34 years of progress in the biogeochemistry of organic contaminants in marine ecosystems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Woods Hole Oceanog Inst, Clark Lab, Woods Hole, MA 02543 USA. Texas A&M Univ, Geochem & Environm Res Grp, College Stn, TX 77843 USA. Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA USA. Univ Georgia, Savannah River Ecol Lab, Athens, GA 30602 USA. RI Wade, Terry/A-4012-2012 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 AUG 18 PY 2002 VL 224 MA 001-ENVR BP U517 EP U517 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202617 ER PT J AU Firestone, MA Csencsits, R Sifert, S AF Firestone, MA Csencsits, R Sifert, S TI Polymer-grafted lipid-based complex fluids as scaffolding for the formation of heterostructured nanoparticle arrays. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. 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 AUG 18 PY 2002 VL 224 MA 560-POLY BP U454 EP U454 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302435 ER PT J AU Firman, TK Hay, BP Wiley, WR AF Firman, TK Hay, BP Wiley, WR TI HostDesigner: A program for the be novo structure-based design of molecular receptors with binding sites that complement metal ion guests. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 044-CINF BP U345 EP U345 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201679 ER PT J AU Firman, TK Hay, BP AF Firman, TK Hay, BP TI Virtual high throughput screening of ion receptors. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 189-COMP BP U497 EP U497 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202514 ER PT J AU Folden, CM Gregorich, KE Patin, JB Stavsetra, L Sudowe, R Wilson, RE Zielinski, PM Nitsche, H Hoffman, DC AF Folden, CM Gregorich, KE Patin, JB Stavsetra, L Sudowe, R Wilson, RE Zielinski, PM Nitsche, H Hoffman, DC TI Electron-capture-delayed fission in Am-232. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Oslo, Dept Chem, Oslo, Norway. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA USA. RI Wilson, Richard/H-1763-2011 OI Wilson, Richard/0000-0001-8618-5680 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 041-NUCL BP U90 EP U91 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300471 ER PT J AU French, RJ Magrini-Bair, KA Czernik, S Parent, Y Chornet, E AF French, RJ Magrini-Bair, KA Czernik, S Parent, Y Chornet, E TI Fluidizable catalysts for hydrogen production by steam reforming of biomass pyrolysis products. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 144-FUEL BP U579 EP U579 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202975 ER PT J AU Galli, G Schwegler, ER Grossman, JC AF Galli, G Schwegler, ER Grossman, JC TI Ab-initio simulations of simple aqueous solutions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI Schwegler, Eric/A-2436-2016 OI Schwegler, Eric/0000-0003-3635-7418 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 237-COMP BP U505 EP U505 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202562 ER PT J AU Garcia, AE AF Garcia, AE TI Folding and unfolding thermodynamics of a three helix bundle proteins. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 077-COLL BP U408 EP U408 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202025 ER PT J AU Garland, NL Davis, PB Ho, DL AF Garland, NL Davis, PB Ho, DL TI Recent development of automotive fuel processor technologies. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Off Adv Automot Technol, Washington, DC 20585 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 052-FUEL BP U564 EP U564 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202883 ER PT J AU Getty, AD Main, AD Rheingold, A Linehan, JC Jessop, PG AF Getty, AD Main, AD Rheingold, A Linehan, JC Jessop, PG TI Mechanistic investigation of the catalytic activation of carbon dioxide via ruthenium complexes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA. Univ Delaware, Dept Chem, Newark, DE 19716 USA. Univ Calif Davis, Dept Chem, 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 AUG 18 PY 2002 VL 224 MA 549-INOR BP U726 EP U726 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203790 ER PT J AU Getty, AD Main, AD Rheingold, A Linehan, JC Jessop, PG AF Getty, AD Main, AD Rheingold, A Linehan, JC Jessop, PG TI Mechanistic investigation of the catalytic activation of carbon dioxide via ruthenium complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA. Univ Delaware, Dept Chem, Newark, DE 19716 USA. Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 466-INOR BP U714 EP U714 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203707 ER PT J AU Gilbertson, RD Hutchison, JE Weakley, TJR Rapko, BM Hay, BP AF Gilbertson, RD Hutchison, JE Weakley, TJR Rapko, BM Hay, BP TI Efficient synthesis and coordination complexes of a new ligand architecture with high affinity for f-block elements. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Oregon, Dept Chem, Eugene, OR 97403 USA. Pacific NW Natl Lab, Radiochem Proc Grp, Richland, WA 99352 USA. Pacific NW Natl Lab, WR Wiley 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 AUG 18 PY 2002 VL 224 MA 483-INOR BP U717 EP U717 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203724 ER PT J AU Gipson, SL Ren, D AF Gipson, SL Ren, D TI Electronic effects in the electron transfer chain catalyzed substitution of phosphines for halide on CpFe(CO)(2)X. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. Univ Melbourne, Dept Chem, Parkville, Vic 3052, Australia. Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 014-INOR BP U642 EP U642 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203255 ER PT J AU Glatzel, P Bergmann, U deGroot, F Cramer, SP AF Glatzel, P Bergmann, U deGroot, F Cramer, SP TI New developments in high-resolution hard x-ray spectroscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Utrecht, Dept Chem, NL-3584 CH Utrecht, Netherlands. Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA USA. Univ Calif Davis, Lawrence Berkeley Natl Lab, Dept Appl Sci, Berkeley, CA USA. RI de Groot, Frank/A-1918-2009 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 025-INOR BP U644 EP U644 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203266 ER PT J AU Goldstein, AH Black, DG Dreyfus, GB Kurpius, MR Lee, A Lunden, MM McKay, M Schade, GW AF Goldstein, AH Black, DG Dreyfus, GB Kurpius, MR Lee, A Lunden, MM McKay, M Schade, GW TI Chemical interactions between the atmosphere and forested ecosystems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Environm Sci Policy & Management, Div Ecosyst Sci, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Berkeley, CA USA. RI Schade, Gunnar/G-9000-2012; Goldstein, Allen/A-6857-2011 OI Schade, Gunnar/0000-0003-4327-0839; Goldstein, Allen/0000-0003-4014-4896 NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 065-PHYS BP U303 EP U303 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301565 ER PT J AU Gordon, PL Donohoe, R Keogh, DW Tait, CD Gorden, AEV Hannah, S Lynch, V Seidel, D Sessler, JL AF Gordon, PL Donohoe, R Keogh, DW Tait, CD Gorden, AEV Hannah, S Lynch, V Seidel, D Sessler, JL TI Actinide coordination chemistry of expanded porphyrin systems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, GT Seaborg Inst, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA. RI Gorden, Anne/D-2477-2011 OI Gorden, Anne/0000-0001-6623-9880 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 448-INOR BP U711 EP U711 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203689 ER PT J AU Grudzinski, JJ AF Grudzinski, JJ TI MINOS detector scintillator module construction methods. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 030-NUCL BP U89 EP U89 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300460 ER PT J AU Hahn, RL AF Hahn, RL TI Lens R&D and testing of prototype detector modules at the Gran Sasso National Laboratory. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 016-NUCL BP U87 EP U87 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300446 ER PT J AU Hahn, RL AF Hahn, RL TI Recent results from the Sudbury neutrino observatory, SNO SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 002-NUCL BP U85 EP U85 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300432 ER PT J AU Hanson, LA Harsh, JB Palmer, CD Hamilton, MA AF Hanson, LA Harsh, JB Palmer, CD Hamilton, MA TI Potential for phytoextraction of cesium from contaminated soils. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Washington State Univ, Dept Crop & Soil Sci, Pullman, WA 99164 USA. Washington State Univ, Ctr Multiphase Environm Res, Pullman, WA 99164 USA. Idaho Natl Engn Lab, Idaho Falls, ID 83415 USA. RI Harsh, James/C-7455-2014 OI Harsh, James/0000-0002-0177-3342 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 097-IEC BP U626 EP U626 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203172 ER PT J AU Hartmann, PP Lin, M AF Hartmann, PP Lin, M TI Spectrophotometric investigation of the absorption formation of UO2Cl+ and UO2Cl2o in NaCl solution. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Environm Sci & Waste Technol Div, Carlsbad, NM 88220 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 452-INOR BP U712 EP U712 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203693 ER PT J AU Hartmann, T Wetteland, C Ware, SD Lu, NP Sage, S Moir, D Walthall, M Hartmann, PP AF Hartmann, T Wetteland, C Ware, SD Lu, NP Sage, S Moir, D Walthall, M Hartmann, PP TI Spectroscopic investigation of the formation of alpha-Radiolysis by-products in chloride brines featuring high-energy proton beam line experiments. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Environm Sci & Waste Technol Div, Carlsbad, NM 88220 USA. Los Alamos Natl Lab, Div Sci Mat, Carlsbad, NM 88220 USA. Carlsbad Environm Monitoring Res Ctr, Carlsbad, 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 AUG 18 PY 2002 VL 224 MA 083-NUCL BP U96 EP U96 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300512 ER PT J AU Hay, BP Gutowski, MS Dixon, DA Bryan, JC Moyer, BA AF Hay, BP Gutowski, MS Dixon, DA Bryan, JC Moyer, BA TI Structural design criteria for oxyanion receptors. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN USA. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 435-INOR BP U709 EP U709 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203676 ER PT J AU Hay, BP Lumetta, GJ Rapko, BM Garza, PA Gilbertson, RD Weakley, TJR Hutchison, JE AF Hay, BP Lumetta, GJ Rapko, BM Garza, PA Gilbertson, RD Weakley, TJR Hutchison, JE TI Deliberate design of ligand architecture yields dramatic enhancement in metal ion affinity. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. Pacific NW Natl Lab, Radiochem Proc Grp, Richland, WA 99352 USA. Univ Oregon, Dept Chem, Eugene, OR 97403 USA. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 433-INOR BP U709 EP U709 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203674 ER PT J AU Hay, BP Wiley, WR AF Hay, BP Wiley, WR TI Extending the MM3 force field for application to the structure-based design of metal ion hosts. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 045-COMP BP U476 EP U476 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202371 ER PT J AU Head-Gordon, M Weisman, J Lee, T AF Head-Gordon, M Weisman, J Lee, T TI Electronic structure calculations of the excited states of polycyclic aromatic hydrocarbons. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 069-PHYS BP U304 EP U304 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301569 ER PT J AU Head-Gordon, T Crivelli, S Eskow, E Byrd, R Schnabel, R AF Head-Gordon, T Crivelli, S Eskow, E Byrd, R Schnabel, R TI Protein structure prediction and solvation potentials of mean force. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, NERSC Div, Berkeley, CA USA. Univ Colorado, Dept Comp Sci, 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 AUG 18 PY 2002 VL 224 MA 075-COLL BP U407 EP U407 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202023 ER PT J AU Hessler, JP Seifert, S Winans, RE AF Hessler, JP Seifert, S Winans, RE TI Small-angle X-ray scattering for studies of soot inception and formation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 133-FUEL BP U578 EP U578 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202964 ER PT J AU Hodgson, KO AF Hodgson, KO TI Beyond the current generation of synchrotrons-ultrabright and ultrashort x-rays from linac-driven light sources. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 236-ANYL BP U148 EP U148 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200659 ER PT J AU Hou, SS Bonagamba, TJ Beyer, FL Schmidt-Rohr, K AF Hou, SS Bonagamba, TJ Beyer, FL Schmidt-Rohr, K TI Preparation of polymer-clay nanocomposites, and their studies by multinuclear solid-state NMR. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. USA, Res Lab, Polymers Res Branch, Washington, DC USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 190-POLY BP U384 EP U384 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302066 ER PT J AU Hu, JL Wang, Y Chin, C Palo, D Holladay, J Rozmiarek, R Dagle, R Cao, CS Baker, E AF Hu, JL Wang, Y Chin, C Palo, D Holladay, J Rozmiarek, R Dagle, R Cao, CS Baker, E TI Catalytic hydrogen production for small portable power application. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RI Wang, Yong/C-2344-2013 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 128-FUEL BP U577 EP U577 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202959 ER PT J AU Hudan, S Davin, B Alfaro, R Xu, H Beaulieu, L Larochelle, Y Lefort, T Yanez, R Caraley, AL de Souza, RT Liu, TX Liu, XD Lynch, WG Tan, WP Tsang, MB Vander Molen, A Wagner, A Xi, HF Gelbke, CK Charity, RJ Sobotka, LG AF Hudan, S Davin, B Alfaro, R Xu, H Beaulieu, L Larochelle, Y Lefort, T Yanez, R Caraley, AL de Souza, RT Liu, TX Liu, XD Lynch, WG Tan, WP Tsang, MB Vander Molen, A Wagner, A Xi, HF Gelbke, CK Charity, RJ Sobotka, LG TI Velocity dissipation and fragment production in non-central heavy-ion collisions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Indiana Univ, Dept Chem, Bloomington, IN 47408 USA. Indiana Univ, IUCF, Bloomington, IN 47408 USA. Univ Laval, Quebec City, PQ G1K 7P4, Canada. Oak Ridge Natl Lab, Oak Ridge, TN USA. Michigan State Univ, E Lansing, MI 48824 USA. Washington Univ, St Louis, MO 63130 USA. RI Lynch, William/I-1447-2013; Tan, Wanpeng/A-4687-2008; Wagner, Andreas/G-3127-2013 OI Lynch, William/0000-0003-4503-176X; Tan, Wanpeng/0000-0002-5930-1823; Wagner, Andreas/0000-0001-7575-3961 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 067-NUCL BP U94 EP U94 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300496 ER PT J AU Huynh, MHV Meyer, TJ Baker, RT Morris, DE White, PS AF Huynh, MHV Meyer, TJ Baker, RT Morris, DE White, PS TI The extensive redox chemistry of osmium(VI) nitrido toward N-transfer reaction. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Strateg Res Directorate, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. Univ N Carolina, Dept Chem, Chapel Hill, NC 27514 USA. EM huynh@lanl.gov NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 023-INOR BP U644 EP U644 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203264 ER PT J AU Ice, GE AF Ice, GE TI Advanced x-ray microbeam studies of local chemistry and structure. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Met & Ceram, 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 AUG 18 PY 2002 VL 224 MA 245-ANYL BP U150 EP U150 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200667 ER PT J AU Im, HJ Dai, S AF Im, HJ Dai, S TI Sol-gel neutron detector. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 512-INOR BP U721 EP U721 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203753 ER PT J AU Inbody, MA Borup, RL Tafoya, JI AF Inbody, MA Borup, RL Tafoya, JI TI Transient control of carbon monoxide with staged PrOx reactors. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Fuel Cell Team, Los Alamos, NM 87545 USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 075-FUEL BP U567 EP U568 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202906 ER PT J AU Jackson, BP Seaman, JC Bertsch, PM Cabrera, ML Wood, CW Camberato, JC AF Jackson, BP Seaman, JC Bertsch, PM Cabrera, ML Wood, CW Camberato, JC TI Trace element speciation in poultry litter leachates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Georgia, Adv Analyt Ctr Environm Sci, Aiken, SC 29802 USA. Univ Georgia, Adv Analyt Ctr Environm Sci, Savannah River Ecol Lab, Aiken, SC 29802 USA. Univ Georgia, Dept Crop & Soil Sci, Aiken, SC 29802 USA. Auburn Univ, Dept Agron & Soils, Auburn, AL 36849 USA. Clemson Univ, Pee Dee Res & Educ, Clemson, SC 29631 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 107-ENVR BP U534 EP U534 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202723 ER PT J AU John, KD AF John, KD TI Remarkable structure, dynamics and reactivity of M(allyl)(3) (M=Rh,Ir). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, Los Alamos Catalysis Initiat, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 010-INOR BP U641 EP U641 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203251 ER PT J AU Jones, MG Benson, MT AF Jones, MG Benson, MT TI Dynamic mechanical analysis of poly(acrylic acid) crossilinked with a high imino-content melamine SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Ineel, Idaho Falls, ID 83415 USA. RI Benson, Michael/B-8855-2017 OI Benson, Michael/0000-0003-4927-614X NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 231-POLY BP U390 EP U390 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302106 ER PT J AU Jung, YS Cho, TY Luning, J Frank, CW Nothofer, HG Scherf, U Yoon, DY AF Jung, YS Cho, TY Luning, J Frank, CW Nothofer, HG Scherf, U Yoon, DY TI Study of surface order in polyfluorene films from NEXAFS experiments. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Seoul Natl Univ, Sch Chem Engn, Seoul 151742, South Korea. Stanford Synchrotron Radiat Lab, Stanford, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 180-POLY BP U383 EP U383 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302056 ER PT J AU Kadam, KL Rydholm, EC Knutsen, JS McMillan, JD AF Kadam, KL Rydholm, EC Knutsen, JS McMillan, JD TI Kinetic model for enzymatic hydrolysis of lignocellulosic biomass. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Colorado, Dept Chem Engn, Boulder, CO 80309 USA. Natl Renewable Energy Lab, Biotechnol Div Fuels & Chem, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 159-BIOT BP U225 EP U225 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201023 ER PT J AU Kathmann, SM Schenter, GK Garrett, BC AF Kathmann, SM Schenter, GK Garrett, BC TI Solvation thermodynamics of small ionic water clusters relevant to nucleation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Schenter, Gregory/I-7655-2014 OI Schenter, Gregory/0000-0001-5444-5484 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 262-COMP BP U509 EP U509 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202587 ER PT J AU Kay, BD Ayotte, P Daschbach, JL Dohnalek, Z Kimmel, GA Smith, RS Stevenson, KP Teeter, GR AF Kay, BD Ayotte, P Daschbach, JL Dohnalek, Z Kimmel, GA Smith, RS Stevenson, KP Teeter, GR TI Molecular beam studies of nanoscale films of amorphous solid water. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 101-COLL BP U411 EP U411 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202049 ER PT J AU Kemner, K AF Kemner, K TI Synchrotron radiation in the environmental sciences and geosciences. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA. RI ID, MRCAT/G-7586-2011 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 AUG 18 PY 2002 VL 224 MA 233-ANYL BP U148 EP U148 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200656 ER PT J AU Kennedy, MA McAteer, K AF Kennedy, MA McAteer, K TI Force field dependence of NMR-based, restrained molecular dynamics DNA structure calculations including an analysis of the influence of residual dipolar coupling restraints. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 092-COMP BP U482 EP U483 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202417 ER PT J AU Kidder, MK Britt, PF Buchanan, AC AF Kidder, MK Britt, PF Buchanan, AC TI Pyrolysis of phenyl benzoate. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Chem Sci 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 AUG 18 PY 2002 VL 224 MA 276-ORGN BP U157 EP U157 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300788 ER PT J AU Klaehn, JR Luther, TA AF Klaehn, JR Luther, TA TI Synthesis of novel mixed-substituent poly(n-propylphosphazenes). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 085-POLY BP U370 EP U370 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301962 ER PT J AU Kopasz, JP Krause, TR Ahmed, S Krumpelt, M AF Kopasz, JP Krause, TR Ahmed, S Krumpelt, M TI Keynote address: Fuel requirements for fuel cell systems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. Argonne Natl Lab, Fuel Cell Technol Sect, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 029-FUEL BP U561 EP U561 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202860 ER PT J AU Krause, T Kopasz, J Rossignol, C Carter, JD Krumpelt, M AF Krause, T Kopasz, J Rossignol, C Carter, JD Krumpelt, M TI Catalytic autothermal reforming for fuel cell systems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 054-FUEL BP U564 EP U564 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202885 ER PT J AU Kronenberg, A Choppin, GR Rundberg, RS Wilhelmy, JB AF Kronenberg, A Choppin, GR Rundberg, RS Wilhelmy, JB TI Development of rapid, efficient separation of 26-min 235mU from 239Pu and from fission products for measurement of the (n,N ') production and (n,f) fission cross section of the isomer. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Florida State Univ, Dept Chem, Tallahassee, FL 32306 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 077-NUCL BP U95 EP U95 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300506 ER PT J AU Kuehl, CJ Carlson, CN Baker, RT Hanusa, TP Sattelberger, AP John, KD AF Kuehl, CJ Carlson, CN Baker, RT Hanusa, TP Sattelberger, AP John, KD TI Synthesis, characterization and-reactivity of [1,3-bis(trimethylsilyl)allyl]lanthanide complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. Vanderbilt Univ, Dept Chem, Nashville, TN 37240 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 080-INOR BP U653 EP U653 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203321 ER PT J AU Kulkarni, SR Borole, AP AF Kulkarni, SR Borole, AP TI Investigating substrate-binding of hydrogenase enzymes for developing desulfurization catalysts. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. RI Borole, AP/F-3933-2011 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 AUG 18 PY 2002 VL 224 MA 285-BIOT BP U245 EP U245 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201149 ER PT J AU Kuo, IFW Mundy, CJ Tobia, DK AF Kuo, IFW Mundy, CJ Tobia, DK TI Polarization and dynamics of water and Schiff base within bacteriorhodopsin. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. 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 AUG 18 PY 2002 VL 224 MA 289-COMP BP U513 EP U513 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202614 ER PT J AU Landi, BJ Van Derveer, W Raffaelle, RP Hastings, D Alleman, JL Heben, MJ Gennett, T AF Landi, BJ Van Derveer, W Raffaelle, RP Hastings, D Alleman, JL Heben, MJ Gennett, T TI Efficient single-wall carbon nanotube - Nafion actuator systems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Rochester Inst Technol, NanoPower Res Labs, Rochester, NY 14623 USA. Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 057-COLL BP U405 EP U405 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202005 ER PT J AU Laskin, A Berkowitz, CM Cowin, JP Gaspar, DJ Iedema, MJ Spicer, CW AF Laskin, A Berkowitz, CM Cowin, JP Gaspar, DJ Iedema, MJ Spicer, CW TI Comprehensive field observations of sea salt chemistry over Houston/Galveston area. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Pacific NW Natl Lab, Global Environm Change Dept, Richland, WA 99352 USA. RI Gaspar, Dan/H-6166-2011 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 AUG 18 PY 2002 VL 224 MA 229-PHYS BP U329 EP U329 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301727 ER PT J AU Laskin, J Bailey, TH Futrell, JH AF Laskin, J Bailey, TH Futrell, JH TI Shattering of peptide ions on surfaces. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA. RI Laskin, Julia/H-9974-2012 OI Laskin, Julia/0000-0002-4533-9644 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 384-PHYS BP U353 EP U353 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301878 ER PT J AU Last, JA Waggoner, TA Sasaki, DY AF Last, JA Waggoner, TA Sasaki, DY TI Nanostructure formation in lipid membranes induced by chemical recognition. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Biomol Mat & Interfaces Dept, Albuquerque, NM 87185 USA. Sandia Natl Labs, Biomol Mat & Interfaces Sci 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 AUG 18 PY 2002 VL 224 MA 005-COLL BP U396 EP U396 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201953 ER PT J AU Lee, B Bao, LL Im, HJ Luo, HM Dai, S AF Lee, B Bao, LL Im, HJ Luo, HM Dai, S TI Synthesis and characterization of organic-inorganic hybrid mesoporous anion-exchange resins for perrhenate anion absorption. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Nucl Sci & Technol Div, 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 AUG 18 PY 2002 VL 224 MA 052-IEC BP U618 EP U618 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203127 ER PT J AU Lee, JW Greenbaum, E AF Lee, JW Greenbaum, E TI Oxygen sensitivity in algal H2 production. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 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 AUG 18 PY 2002 VL 224 MA 145-FUEL BP U579 EP U580 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202976 ER PT J AU Li, J Liang, BY Andrews, L Bursten, BE AF Li, J Liang, BY Andrews, L Bursten, BE TI Noble-gas-uranium bonds: Some remarkable new examples of inorganometallic complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Univ Virginia, Dept Chem, Charlottesville, VA 22903 USA. Ohio State Univ, Dept Chem, Columbus, OH 43210 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 615-INOR BP U737 EP U737 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203856 ER PT J AU Link, DD Minus, D Striebich, RC Baltrus, JP Rothenberger, KS AF Link, DD Minus, D Striebich, RC Baltrus, JP Rothenberger, KS TI Analysis of total sulfur and speciated sulfur compounds in aviation fuel. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. USAF, AF Res Lab, Dayton, OH 45469 USA. Univ Dayton, Res Inst, Dayton, OH 45469 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 033-PETR BP U272 EP U272 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301448 ER PT J AU Liu, G Rodriguez, J Hrbek, J Jirsak, T Chang, ZP Dvorak, J Maiti, A AF Liu, G Rodriguez, J Hrbek, J Jirsak, T Chang, ZP Dvorak, J Maiti, A TI Activation of gold on titania: Adsorption and reaction of SO2 on Au/TiO2 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 331-COLL BP U448 EP U448 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202277 ER PT J AU Loveland, WD Gregorich, K Ginter, TN Ninov, V Patin, J Peterson, D AF Loveland, WD Gregorich, K Ginter, TN Ninov, V Patin, J Peterson, D CA SHEIKS Collaboration TI New results concerning heavy element synthesis. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA. Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 042-NUCL BP U91 EP U91 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300472 ER PT J AU Loy, DA Fujimoto, CH Wheeler, DR Jamison, GM Cornelius, CJ AF Loy, DA Fujimoto, CH Wheeler, DR Jamison, GM Cornelius, CJ TI Gas separation by thin film diels-alder polyphenylenes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Catalysis & Chem Technol Dept, Albuquerque, NM 87185 USA. Sandia Natl Labs, Organ Mat Dept, Livermore, CA 94550 USA. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 243-POLY BP U392 EP U392 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302118 ER PT J AU Loy, DA Staiger, CL Jamison, GM Schneider, DA Cornelius, CJ AF Loy, DA Staiger, CL Jamison, GM Schneider, DA Cornelius, CJ TI Discovery and optimization of hydrodesulfurization catalysts using a combinatorial approach. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 019-PETR BP U270 EP U270 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301434 ER PT J AU Lu, NP Hartmann, T Conca, J Paviet-Hartmann, P Palmer, P Parker, G Martinez, B Strietelmeier, B AF Lu, NP Hartmann, T Conca, J Paviet-Hartmann, P Palmer, P Parker, G Martinez, B Strietelmeier, B TI Solution chemistry and plutonium-239 behavior in synthetic brines after exposure to magnesium oxide backfill. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, CINC, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 082-NUCL BP U96 EP U96 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300511 ER PT J AU Luo, HM Dai, S Bonnesen, PV Buchanan, AC AF Luo, HM Dai, S Bonnesen, PV Buchanan, AC TI Solvent extraction of cesium nitrate by room temperature ionic liquids containing crown ethers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 027-IEC BP U614 EP U614 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203102 ER PT J AU Luzar, A Leung, K Bratko, D AF Luzar, A Leung, K Bratko, D TI Dynamic aspects of hydrophobicity. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif San Francisco, Dept Pharmaceut Chem, San Francisco, CA 94143 USA. Univ Calif Berkeley, Coll Chem, Berkeley, CA 94720 USA. Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 105-COLL BP U412 EP U412 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202053 ER PT J AU Macha, S Carrado, KA Tiede, DM AF Macha, S Carrado, KA Tiede, DM TI Matrices for encapsulation of biomolecules: Architecture and surface engineering. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60532 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 176-BIOT BP U228 EP U228 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201040 ER PT J AU Mahurin, SM Dai, S Barnes, MD AF Mahurin, SM Dai, S Barnes, MD TI Study of lateral diffusion of fluorescent molecules in silicate thin films by single-molecule fluorescence imaging. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 169-ANYL BP U139 EP U139 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200594 ER PT J AU Manns, CR Elsen, HA Taylor, C AF Manns, CR Elsen, HA Taylor, C TI Catalyst development for reforming processes of liquid hydrocarbons. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 126-FUEL BP U576 EP U576 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202957 ER PT J AU McGrath, JE Wang, F Hickner, M Kim, Y Harrison, W Zawodzinski, T AF McGrath, JE Wang, F Hickner, M Kim, Y Harrison, W Zawodzinski, T TI Polymeric electrolyte membrane (PEM) nanocomposites for fuel cells via direct polycondensation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Virginia Tech, Dept Chem, Blacksburg, VA 24061 USA. Univ Calif Los Alamos Natl Labs, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 375-POLY BP U426 EP U426 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302250 ER PT J AU McMahan, MA AF McMahan, MA TI The nuclear science wallchart and teachers' guide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 032-CHED BP U288 EP U288 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201351 ER PT J AU Medforth, CJ Somma, MS Shyr, DC Smith, KM Goodrow, MH Haddad, R Qiu, Y Shelnutt, JA AF Medforth, CJ Somma, MS Shyr, DC Smith, KM Goodrow, MH Haddad, R Qiu, Y Shelnutt, JA TI Monocation stabilities and intermolecular proton exchange rates in highly nonplanar porphyrins. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87106 USA. Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. Univ Calif Davis, Dept Entomol, Davis, CA 95616 USA. Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. RI Shelnutt, John/A-9987-2009; Smith, Kevin/G-1453-2011 OI Shelnutt, John/0000-0001-7368-582X; Smith, Kevin/0000-0002-6736-4779 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 113-INOR BP U658 EP U658 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203354 ER PT J AU Menges, MG Schmidt-Rohr, K Penelle, J AF Menges, MG Schmidt-Rohr, K Penelle, J TI Synthesis and morphology of branched polyethylene-like polyesters derived from long-chain aliphatic diols. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01002 USA. Iowa State Univ, Ames Lab, Ames, IA USA. Iowa State Univ, Dept Chem, Ames, IA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 573-POLY BP U456 EP U456 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302448 ER PT J AU Meyer, TJ Dattelbaum, DM AF Meyer, TJ Dattelbaum, DM TI Low energy charge transfer in ploypyridyl complexes of Ru(II) and Os(II). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Strateg Res Directorate, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 020-INOR BP U643 EP U643 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203261 ER PT J AU Micheel, CM Jun, YW Williams, SC Goh, SL Zanchet, D Parak, WJ Gerion, D Pellegrino, T Alivisatos, AP AF Micheel, CM Jun, YW Williams, SC Goh, SL Zanchet, D Parak, WJ Gerion, D Pellegrino, T Alivisatos, AP TI Novel characterization techniques for recent nanocrystal molecules. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RI Pellegrino, teresa/G-6417-2010; Parak, Wolfgang J./M-3998-2014; Zanchet, Daniela/D-6566-2012 OI Parak, Wolfgang J./0000-0003-1672-6650; Zanchet, Daniela/0000-0003-1475-2548 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 248-PHYS BP U332 EP U332 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301746 ER PT J AU Mills, GL Sandhu, SS AF Mills, GL Sandhu, SS TI Surface catalyzed degradation of tetraphenylborate on mineral and oxide surfaces. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. Claflin Univ, Dept Chem, Orangeburg, SC 29115 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 130-ENVR BP U538 EP U538 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202746 ER PT J AU Mills, GL AF Mills, GL TI Assessing the feasibility of natural attenuation as a remediation strategy for a diesel-contaminated groundwater plume. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 015-ENVR BP U519 EP U519 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202631 ER PT J AU Monk, DJ Ridgway, TH Heineman, WR Seliskar, CJ Bryan, SA Hubler, TL AF Monk, DJ Ridgway, TH Heineman, WR Seliskar, CJ Bryan, SA Hubler, TL TI Spectroelectrochemical sensor for pertechnetate in the vadose zone. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA. Pacific NW Natl Lab, Radiochem Proc Lab, Richland, WA USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 079-NUCL BP U96 EP U96 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300508 ER PT J AU Montgomery, HJ Guillemette, JG Bartlett, R Squier, TC AF Montgomery, HJ Guillemette, JG Bartlett, R Squier, TC TI Oxidized calmodulin mutants differentially regulate constitutive nitric oxide synthases. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada. Univ Kansas, Lawrence, KS 66045 USA. Pacific NW Natl Lab, Richland, WA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 068-BIOL BP U165 EP U165 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200747 ER PT J AU Moretto, LG AF Moretto, LG TI Liquid to vapor phase diagram from nuclei to infinite nuclear matter. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LBNL, Dept Chem, Berkeley, CA 94720 USA. LBNL, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 050-NUCL BP U92 EP U92 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300480 ER PT J AU Morss, LR AF Morss, LR TI Thermodynamic: Properties of nonstoichiometric actinide oxides, especially PuO2+x SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 670-INOR BP U746 EP U746 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203911 ER PT J AU Myers, DJ Krebs, JF Carter, JD Kumar, R Krumpelt, M AF Myers, DJ Krebs, JF Carter, JD Kumar, R Krumpelt, M TI Metal/ceria water-gas shift catalysts for automotive polymer electrolyte fuel cell systems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 102-FUEL BP U572 EP U572 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202933 ER PT J AU Nash, KL AF Nash, KL TI Closing the nuclear fuel cycle: International research on the development of new strategies. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 075-NUCL BP U95 EP U95 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300504 ER PT J AU Pandey, S Fletcher, KA Sasaki, DY AF Pandey, S Fletcher, KA Sasaki, DY TI Investigation of novel pyrene-labeled dendrimers as effective metal ion chemosensors. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 New Mexico Inst Min & Technol, Dept Chem, Socorro, NM 87801 USA. Sandia Natl Labs, Biomol Mat & Interface Sci Dept, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 148-ANYL BP U135 EP U135 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200573 ER PT J AU Pathak, S Dentinger, PM AF Pathak, S Dentinger, PM TI Photopatterning of DNA for integration with microfabricated structures. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Mat Chem, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 006-COLL BP U396 EP U397 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201954 ER PT J AU Payne, CK Asplund, MC Snee, PT Yeston, JS Yang, H Frei, H Bergman, RG Harris, CB AF Payne, CK Asplund, MC Snee, PT Yeston, JS Yang, H Frei, H Bergman, RG Harris, CB TI Role of solvent structure in carbon-hydrogen bond activation as determined by ultrafast infrared spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA. Harvard Univ, Dept Chem & Biol Chem, Cambridge, MA 02138 USA. Univ Calif Berkeley, Dept Chem, EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Div Chem Sci, EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 557-INOR BP U727 EP U728 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203798 ER PT J AU Pestovsky, O Bakac, A AF Pestovsky, O Bakac, A TI Generation and reactivity of rhodium(IV) complexes in aqueous medium. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 189-INOR BP U671 EP U671 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203430 ER PT J AU Pla-Dalmau, A AF Pla-Dalmau, A TI Extruded plastic scintillator for the MINOS experiment. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 029-NUCL BP U89 EP U89 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300459 ER PT J AU Plunkett, RK AF Plunkett, RK TI MINOS: A long-baseline experiment between Fermilab and Soudan. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Fermilab Natl Accelerator Lab, Particle Phys Div, Batavia, IL 60174 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 028-NUCL BP U89 EP U89 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300458 ER PT J AU Polson, LA Harrup, MK Jones, MG AF Polson, LA Harrup, MK Jones, MG TI Synthesis, characterization, and ion sequestration of novel nanocomposite materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 INEEL, Chem Grp, Idaho Falls, ID 83415 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 005-TECH BP U356 EP U356 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201747 ER PT J AU Post-Zwicker, AP AF Post-Zwicker, AP TI Interactive, inquiry-based nuclear fusion education via the internet. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Princeton Univ, Plasma Phys Lab, Sci Educ Programs, Princeton, NJ 08543 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 033-CHED BP U288 EP U288 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201352 ER PT J AU Pratt, LR Eikerling, M Paddison, SJ Zawodzinski, TA AF Pratt, LR Eikerling, M Paddison, SJ Zawodzinski, TA TI Molecular modeling of proton conduction in polymer electrolyte membranes of nafion type. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Los Alamos, NM USA. Motorola Inc, Computat Nanosci Grp, Schaumburg, IL 60196 USA. RI Pratt, Lawrence/H-7955-2012; Paddison, Stephen/B-2935-2014 OI Pratt, Lawrence/0000-0003-2351-7451; NR 0 TC 3 Z9 3 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 074-COMP BP U480 EP U480 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202399 ER PT J AU Pribisko, MA Abrams, MB John, KD Martin, RL Baker, RT AF Pribisko, MA Abrams, MB John, KD Martin, RL Baker, RT TI Comparing the reactivity of cationic divalent and zerovalent platinum diaminophosphenium complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, C SIC, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 319-INOR BP U692 EP U692 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203560 ER PT J AU Qi, W AF Qi, W TI Combinatorial approach to studying the growth mechanism of nano-Si film using the hot-wire CVD technique. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Elect & Mat Device Div, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 024-MTLS BP U59 EP U59 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200137 ER PT J AU Radford, DC AF Radford, DC TI Physics with heavy neutron-rich ribs at the HRIBF. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RI radford, David/A-3928-2015 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 AUG 18 PY 2002 VL 224 MA 038-NUCL BP U90 EP U90 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300468 ER PT J AU Radovic, LR Bockrath, B AF Radovic, LR Bockrath, B TI What (exactly) is on the edges of graphene layers in carbon - The unfolding story. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Penn State Univ, Dept Energy & Geoenvironm Engn, University Pk, PA 16802 USA. US DOE, Natl Energy Technol Lab, Washington, DC 20585 USA. RI Radovic, Ljubisa/B-3306-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 004-FUEL BP U557 EP U557 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202835 ER PT J AU Ramsey, RS Ramsey, JM Jacobson, SC Foote, RS Culbertson, CT AF Ramsey, RS Ramsey, JM Jacobson, SC Foote, RS Culbertson, CT TI Interfacing microfluidics with mass spectrometry: Challenges and potential rewards. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. 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 AUG 18 PY 2002 VL 224 MA 249-ANYL BP U150 EP U150 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200671 ER PT J AU Rao, LF Jiang, J Di Bernardo, P Zanonato, P Bismondo, A AF Rao, LF Jiang, J Di Bernardo, P Zanonato, P Bismondo, A TI Comparative study of uranyl(VI) complexation with acetate in water and dimethyl sulfoxide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Padua, Dipartimento Chim Inorgan Metallorgan & Analit, I-35131 Padua, Italy. CNR, Ist Chim Inorgan & Superfici, I-35127 Padua, Italy. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 449-INOR BP U711 EP U711 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203690 ER PT J AU Raty, JY Galli, G van Buuren, T Terminello, L AF Raty, JY Galli, G van Buuren, T Terminello, L TI Nanodiamonds: Surface reconstructions and optical properties. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Livermore Natl Lab, PAT H div, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 301-COLL BP U443 EP U443 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202248 ER PT J AU Reed, WA Garnov, AY Rao, LF Nash, KL AF Reed, WA Garnov, AY Rao, LF Nash, KL TI EXAFS and thermodynamic studies of uranyl complexes of HEDPA in neutral and alkaline solutions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Glenn T Seaborg Ctr, Berkeley, CA 94704 USA. 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 AUG 18 PY 2002 VL 224 MA 076-NUCL BP U95 EP U95 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300505 ER PT J AU Reiff, WM Feist, M Kemnitz, E Manson, JL AF Reiff, WM Feist, M Kemnitz, E Manson, JL TI Unprecedented long range antiferromagnetic order and metamagnetism of a high spin ferrous dimer: [DiCH(3)-piperazinium](2)[Fe2Cl4(H2O)6]Cl-2. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Northeastern Univ, Dept Chem, Boston, MA 02115 USA. Humboldt Univ, Inst Chem, D-1086 Berlin, Germany. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 400-INOR BP U704 EP U704 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203641 ER PT J AU Reilly, PTA Rodgers, RP Whitten, WB Ramsey, JM AF Reilly, PTA Rodgers, RP Whitten, WB Ramsey, JM TI Proof of the transient nature of precursor soot. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 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 AUG 18 PY 2002 VL 224 MA 130-FUEL BP U577 EP U577 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202961 ER PT J AU Rollins, HW AF Rollins, HW TI Reactive supercritical fluid preparation of metal and metal-sulfide nanoparticles from carbon dioxide solutions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Idaho Natl Engn & Environm Lab, Dept Chem, Idaho Falls, ID 83415 USA. RI Rollins, Harry/B-6327-2017 OI Rollins, Harry/0000-0002-3926-7445 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 083-COLL BP U409 EP U409 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202031 ER PT J AU Rothenberger, KS Howard, BH Cugini, AV Enick, RM Bustamante, F Ciocco, MV Morreale, BM Buxbaum, RE AF Rothenberger, KS Howard, BH Cugini, AV Enick, RM Bustamante, F Ciocco, MV Morreale, BM Buxbaum, RE TI Hydrogen permeability of tantalum-based membrane materials at elevated temperature and pressure. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, NETL, Pittsburgh, PA 15236 USA. Univ Pittsburgh, Pittsburgh, PA 15260 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 166-FUEL BP U583 EP U583 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202997 ER PT J AU Rubie, ND Katrina, P Doonan, C George, GN Young, CG Kirk, ML AF Rubie, ND Katrina, P Doonan, C George, GN Young, CG Kirk, ML TI Electronic structure description of the cis-MoOS unit in models for molybdenum hydroxylase active sites. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. Univ Melbourne, Dept Chem, Parkville, Vic 3052, Australia. Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. RI George, Graham/E-3290-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 015-INOR BP U642 EP U642 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203256 ER PT J AU Rubie, ND Peariso, K Doonan, C George, GN Young, CG Kirk, ML AF Rubie, ND Peariso, K Doonan, C George, GN Young, CG Kirk, ML TI Electronic structure description of the cis-MoOS unit in models for molybdenum hydroxylase active sites. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. Univ Melbourne, Dept Chem, Parkville, Vic 3052, Australia. Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA USA. RI George, Graham/E-3290-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 001-INOR BP U640 EP U640 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203242 ER PT J AU Ruth, LA AF Ruth, LA TI Keynote address. Vision 21: Energy plants for the 21st century. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, 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 AUG 18 PY 2002 VL 224 MA 096-FUEL BP U571 EP U571 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202927 ER PT J AU Rutherford, SW Coons, JE AF Rutherford, SW Coons, JE TI Adsorption dynamics of methane in carbon molecular sieve. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Engn Sci & Applicat Div, Los Alamos, NM 87545 USA. RI Coons, Jim/G-5159-2011 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 AUG 18 PY 2002 VL 224 MA 033-IEC BP U615 EP U615 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203108 ER PT J AU Saengkerdsub, S Dai, S AF Saengkerdsub, S Dai, S TI New applications of inorganic nanocrystalline materials in neutron detection. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 043-IEC BP U617 EP U617 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203118 ER PT J AU Sawvel, AM AF Sawvel, AM TI Nuclear magnetic resonance studies of lead borosilicate glasses and lead aluminosilicate glasses. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 167-CHED BP U306 EP U306 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201485 ER PT J AU Schlossman, ML Tikhonov, AM AF Schlossman, ML Tikhonov, AM TI X-ray scattering studies of long-chain n-alcohol monolayers at the water-hexane interface. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Illinois, Dept Phys, Chicago, IL 60607 USA. Univ Illinois, Dept Chem, Chicago, IL 60607 USA. Univ Chicago, NSLS, Chicago, IL 60637 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. RI Tikhonov, Aleksey/N-1111-2016 NR 0 TC 1 Z9 1 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 017-PHYS BP U296 EP U296 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301518 ER PT J AU Schoenborn, BP Langan, P AF Schoenborn, BP Langan, P TI Structural biology with spallation neutrons. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RI Langan, Paul/N-5237-2015 OI Langan, Paul/0000-0002-0247-3122 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 056-PHYS BP U302 EP U302 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301556 ER PT J AU Serban, M Lewis, MA Marshall, CL Doctor, RD AF Serban, M Lewis, MA Marshall, CL Doctor, RD TI Hydrogen production by direct contact pyrolysis of natural gas. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 138-FUEL BP U578 EP U578 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202969 ER PT J AU Shafir, A Arnold, J AF Shafir, A Arnold, J TI Cationic Ti and Zr alkyl complexes supported by ferrocene-based ligands: Is the ferrocene group an innocent spectator?. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, 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 AUG 18 PY 2002 VL 224 MA 276-INOR BP U685 EP U685 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203517 ER PT J AU Shaheen, SE Breeze, AJ Brown, KE Perkins, JD Parilla, PA Rumbles, G Gregg, BA Miedaner, A Ginley, DS AF Shaheen, SE Breeze, AJ Brown, KE Perkins, JD Parilla, PA Rumbles, G Gregg, BA Miedaner, A Ginley, DS TI Nanostructured oxides for organic photovoltaic devices. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. RI Shaheen, Sean/M-7893-2013 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 AUG 18 PY 2002 VL 224 MA 019-MTLS BP U58 EP U58 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200133 ER PT J AU Shahu, M Yang, CH Pibel, CD McIlroy, A Taatjes, CA Halpern, JB AF Shahu, M Yang, CH Pibel, CD McIlroy, A Taatjes, CA Halpern, JB TI Visible spectroscopy of the vinyl radical and excited state dynamics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 American Univ, Dept Chem, Washington, DC 20016 USA. Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. Howard Univ, Dept Chem, Washington, DC 20059 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 AUG 18 PY 2002 VL 224 MA 302-PHYS BP U340 EP U340 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301799 ER PT J AU Shelnutt, JA Medforth, CJ Qiu, Y Haddad, R AF Shelnutt, JA Medforth, CJ Qiu, Y Haddad, R TI The soret red-shift controversy: Nonplanar deformations do cause the shifts seen for highly ruffled tetraalkyporphyrins. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87106 USA. Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 116-INOR BP U659 EP U659 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203357 ER PT J AU Shinar, J Li, G Jabbour, GE AF Shinar, J Li, G Jabbour, GE TI Optically detected magnetic resonance studies of Pi-conjugated materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Dept Phys, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 014-MTLS BP U57 EP U57 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200128 ER PT J AU Siepmann, JI Wick, CD Stubbs, JM Zhuravlev, N Zhang, L Lee, JS Zhao, X Martin, MG Chen, B Potoff, JJ AF Siepmann, JI Wick, CD Stubbs, JM Zhuravlev, N Zhang, L Lee, JS Zhao, X Martin, MG Chen, B Potoff, JJ TI Developing transferable force fields for phase equilibrium calculations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA. Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA. Sandia Natl Labs, Livermore, CA 94550 USA. Univ Penn, CMM, Philadelphia, PA 19104 USA. Univ Penn, Dept Chem, Philadelphia, PA 19104 USA. Wayne State Univ, Dept Chem Engn & Mat Sci, Detroit, MI 48202 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 090-COMP BP U482 EP U482 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202415 ER PT J AU Smith, RD Liu, P Lee, SH Tracy, CE Pitts, JR AF Smith, RD Liu, P Lee, SH Tracy, CE Pitts, JR TI Low-cost fiber optic hydrogen sensors. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Basic Sci Ctr, Golden, CO 80401 USA. RI Lee, Sehee/A-5989-2011; Liu, Ping/I-5615-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 171-FUEL BP U583 EP U584 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203002 ER PT J AU Somorjai, GA AF Somorjai, GA TI Synthesis and characterization of 2-dimensonal and 3-dimensional platinum nanoparticle arrays. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, 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 AUG 18 PY 2002 VL 224 MA 100-COLL BP U411 EP U411 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202048 ER PT J AU Spath, PL Amos, WA AF Spath, PL Amos, WA TI Hydrogen production via thermal decomposition of methane using a solar reactor. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Cai, Jinling/M-3943-2013 OI Cai, Jinling/0000-0003-0588-6456 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 137-FUEL BP U578 EP U578 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202968 ER PT J AU Stallings, ME Hobbs, DT AF Stallings, ME Hobbs, DT TI Evaluation of chemical cleaning solutions with Savannah River site high level waste sludges. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Westinghouse Savannah River Co, Savannah River Technol Ctr, 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 AUG 18 PY 2002 VL 224 MA 080-NUCL BP U96 EP U96 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300509 ER PT J AU Stanescu, MA Ginosar, DM Bala, GA Anderson, RP AF Stanescu, MA Ginosar, DM Bala, GA Anderson, RP TI Biocatalytic treatment of organosulfur compounds in emulsions in supercritical fluids. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US EPA, Natl Risk Management Res Lab, Cincinnati, OH 45268 USA. Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 046-FUEL BP U563 EP U563 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202877 ER PT J AU Stein, L AF Stein, L TI What was found in Pandora's box after bartlett pulled out XePtF6. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Dept Chem, Downers Grove, IL 60515 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 037-FLUO BP U549 EP U549 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202806 ER PT J AU Stone, JR Stevenson, PD Strayer, MR AF Stone, JR Stevenson, PD Strayer, MR TI At the N=Z line and beyond: HF+BCS mean-field calculations with the separable monopole interaction. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Oxford, Clarendon Lab, Dept Phys, Oxford, England. Univ Surrey, Dept Phys, Surrey, England. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN USA. RI Stevenson, Paul/B-9016-2012 OI Stevenson, Paul/0000-0003-2645-2569 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 049-NUCL BP U92 EP U92 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300479 ER PT J AU Stone, ML Orme, CJ Stewart, FF Benson, MT Peterson, ES AF Stone, ML Orme, CJ Stewart, FF Benson, MT Peterson, ES TI Gas permeation characteristics of four fluorinated polymers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 INEEL, Chem, Idaho Falls, ID 83415 USA. Idaho Natl Engn Lab, Idaho Falls, ID 83415 USA. RI Benson, Michael/B-8855-2017 OI Benson, Michael/0000-0003-4927-614X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 242-POLY BP U392 EP U392 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422302117 ER PT J AU Swanson, BI Schmidt, J Lodwig, S Lauer, S Reed, S Song, XD AF Swanson, BI Schmidt, J Lodwig, S Lauer, S Reed, S Song, XD TI Structure-function based optical biosensors for pathogen detection. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Biosci 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 AUG 18 PY 2002 VL 224 MA 222-ANYL BP U146 EP U147 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200647 ER PT J AU Szilagyi, RK Lim, BS Holm, RH Hedman, B Hodgson, KO Solomon, EI AF Szilagyi, RK Lim, BS Holm, RH Hedman, B Hodgson, KO Solomon, EI TI Description of the ground state wave function of Ni-dithiolenes using sulfur K-edge X-ray absorption spectroscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Dept Chem, Stanford, CA 94305 USA. Harvard Univ, Dept Chem & Biol, Cambridge, MA 02138 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, SLAC, Stanford, CA 94305 USA. RI Szilagyi, Robert/G-9268-2012 OI Szilagyi, Robert/0000-0002-9314-6222 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 257-INOR BP U682 EP U682 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203498 ER PT J AU Tait, CD Reeder, RJ Rakovan, J Morris, DE Elzinga, EJ Cherniak, DJ Nugent, M AF Tait, CD Reeder, RJ Rakovan, J Morris, DE Elzinga, EJ Cherniak, DJ Nugent, M TI Incorporation of uranium(VI) into calcium carbonates and apatite. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. GT Seaborg Inst, Los Alamos, NM 87545 USA. SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA. Miami Univ, Dept Geol, Oxford, OH 45056 USA. Rensselaer Polytech Inst, Dept Earth & Environm Sci, Troy, NY 12181 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 059-INOR BP U650 EP U650 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203300 ER PT J AU Teetsov, JA Campbell, L Satterfield, M Smith, K Wells, C Wells, S Courtney, A AF Teetsov, JA Campbell, L Satterfield, M Smith, K Wells, C Wells, S Courtney, A TI Advantages of membership in Iota Sigma Pi. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Gen Elect Global Res & Dev, Combinatorial Chem & Characterizat Technol, Niskayuna, NY 12204 USA. NIH, Bethesda, MD 20892 USA. Natl Inst Sci & Technol, Gaithersburg, MD USA. IBM Corp, Armonk, NY 10504 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. USDA, Washington, DC 20250 USA. EM teetsov@crd.ge.com NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 020-HIST BP U596 EP U596 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203059 ER PT J AU Teetsov, JA Howard, ME Satterfield, M AF Teetsov, JA Howard, ME Satterfield, M TI History of the tellurium chapter of Iota Sigma Pi at University of Texas at Austin. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Gen Elect Global Res & Dev, Combinatorial Chem & Characterizat Technol, Niskayuna, NY 12204 USA. SE Louisiana Univ, Dept Chem & Phys, Hammond, LA 70402 USA. Natl Inst Stand & Technol, Div Analyt Chem, Gaithersburg, MD USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 019-HIST BP U596 EP U596 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203058 ER PT J AU Thurnauer, MC AF Thurnauer, MC TI Perspectives on research in government laboratories. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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 AUG 18 PY 2002 VL 224 MA 025-PRES BP U28 EP U28 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422200020 ER PT J AU Tobias, DJ Kuo, IFW Mundy, CJ AF Tobias, DJ Kuo, IFW Mundy, CJ TI Ab initio molecular dynamics studies of ion-water interactions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. 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 AUG 18 PY 2002 VL 224 MA 238-COMP BP U505 EP U505 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202563 ER PT J AU Tomczyk, NA Hunt, JE Winans, RE Solum, MS Pugmire, RJ Fletcher, TH AF Tomczyk, NA Hunt, JE Winans, RE Solum, MS Pugmire, RJ Fletcher, TH TI Model compound study of the pathways for aromatic hydrocarbon formation in soot. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60466 USA. Univ Utah, Dept Chem & Fuels Engn, Salt Lake City, UT 84112 USA. Brigham Young Univ, Dept Chem Engn, Provo, UT 84602 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 131-FUEL BP U577 EP U577 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202962 ER PT J AU Tumas, B AF Tumas, B TI Homogeneous and phase-separable catalysis in alternative reaction media. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, C SIC, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 577-ORGN BP U207 EP U207 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301089 ER PT J AU Uddin, J Firman, TK Hay, BP AF Uddin, J Firman, TK Hay, BP TI Computer-aided design of complementary chelate ring architecture. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, WR Wiley 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 AUG 18 PY 2002 VL 224 MA 660-INOR BP U745 EP U745 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203901 ER PT J AU Uddin, J Hay, BP AF Uddin, J Hay, BP TI Computer-aided design of actinide receptors containing catecholate chelate rings. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, WR Wiley 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 AUG 18 PY 2002 VL 224 MA 183-INOR BP U670 EP U670 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203424 ER PT J AU Ulutagay-Kartin, M Thoma, S Cornelius, C Nenoff, TM AF Ulutagay-Kartin, M Thoma, S Cornelius, C Nenoff, TM TI Novel modified zeolites for energy-efficient hydrocarbon separations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Environm Monitoring & Characterizat, 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 AUG 18 PY 2002 VL 224 MA 279-COLL BP U439 EP U440 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202226 ER PT J AU Van Ginhoven, RM Jonsson, H Corrales, LR AF Van Ginhoven, RM Jonsson, H Corrales, LR TI Reactivity of water in fused silica. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Washington, Dept Chem, Seattle, WA 98352 USA. Univ Washington, Dept Chem 351700, Ctr Micro Engineered Mat, Sandia Natl Lab, Seattle, WA 98352 USA. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Jonsson, Hannes/G-2267-2013 OI Jonsson, Hannes/0000-0001-8285-5421 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 027-GEOC BP U592 EP U592 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203037 ER PT J AU Violi, A Kubota, A Pitz, W Westbrook, CK Sarofim, AF AF Violi, A Kubota, A Pitz, W Westbrook, CK Sarofim, AF TI Fully-integrated molecular dynamics-kinetic Monte Carlo code: A new tool for the study of soot precursor growth in combustion conditions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Utah, Salt Lake City, UT 84112 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 148-FUEL BP U580 EP U580 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202979 ER PT J AU Visser, AE Jensen, MP Nash, KL Rogers, RD AF Visser, AE Jensen, MP Nash, KL Rogers, RD TI An investigation of actinide and fission product extraction in room temperature ionic liquids: Liquid/liquid separations and in-situ solution analysis. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA. Univ Alabama, Ctr Green Mfg, Tuscaloosa, AL 35487 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RI Rogers, Robin/C-8265-2013 OI Rogers, Robin/0000-0001-9843-7494 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 088-IEC BP U624 EP U624 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203163 ER PT J AU Vogt, T Woodward, PM Karen, P AF Vogt, T Woodward, PM Karen, P TI Charge- and spin-order in mixed-valence iron and cobalt double perovskites. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ Oslo, Dept Chem, N-0316 Oslo, Norway. RI Karen, Pavel/A-9062-2008 OI Karen, Pavel/0000-0003-2937-6477 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 272-INOR BP U684 EP U685 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203513 ER PT J AU Wang, LH Hingerty, BE Broyde, S AF Wang, LH Hingerty, BE Broyde, S TI Conformational analysis of model estrogen-DNA adducts, N-2-(2-hydroxyestron-6(alpha,beta)-yl)-2 '-deoxyguanosine and N-6-(2-hydroxyestron-6(alpha,beta)-yl)-2 '-deoxyadenosine in duplex B-DNA. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NYU, Dept Biol, New York, NY 10003 USA. Oak Ridge Natl Lab, Div Biol, 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 AUG 18 PY 2002 VL 224 MA 067-TOXI BP U372 EP U372 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201824 ER PT J AU Wang, W AF Wang, W TI Fabrication of tin sulfide nanoparticle arrays within organic-layered solid crystal of bis(alkylammonium) hexachlorostannates(IV). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37830 USA. RI Wang, Wei/B-5924-2012 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 AUG 18 PY 2002 VL 224 MA 164-COLL BP U421 EP U422 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202112 ER PT J AU Wang, W AF Wang, W TI Alternatively hydrophilic metal nanoparticle and hydrophobic magnetic nanoparticle arrays formed in surfactant lyotropic lamellar phases. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RI Wang, Wei/B-5924-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 157-COLL BP U420 EP U420 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202104 ER PT J AU Wang, YH Brinson, B Johnson, MP Kittrell, C Sivaram, S Kim, M Miller, M Lavin, G Kono, J Hauge, R Smalley, RE Arepalli, S Nikolaev, P Cui, H Puretzky, AA Eres, G Lupini, A Chisholm, MF Pennycook, SJ Melechko, A Schaaff, TG Lowndes, DH Geohegan, DB AF Wang, YH Brinson, B Johnson, MP Kittrell, C Sivaram, S Kim, M Miller, M Lavin, G Kono, J Hauge, R Smalley, RE Arepalli, S Nikolaev, P Cui, H Puretzky, AA Eres, G Lupini, A Chisholm, MF Pennycook, SJ Melechko, A Schaaff, TG Lowndes, DH Geohegan, DB TI Condense phase growth of carbon nanotubes by annealing C-60/nickel pancake structures. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Rice Univ, Dept Chem, Houston, TX 77005 USA. Rice Univ, Ctr Nanoscale Sci & Technol, Houston, TX 77005 USA. NASA, Lyndon B Johnson Space Ctr, G B Tech, Houston, TX 77058 USA. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RI Hauge, Robert/A-7008-2011; Arepalli, Sivaram/A-5372-2010; Nikolaev, Pavel/B-9960-2009; Puretzky, Alexander/B-5567-2016; Geohegan, David/D-3599-2013; Eres, Gyula/C-4656-2017 OI Hauge, Robert/0000-0002-3656-0152; Puretzky, Alexander/0000-0002-9996-4429; Geohegan, David/0000-0003-0273-3139; Eres, Gyula/0000-0003-2690-5214 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 053-COLL BP U404 EP U404 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202001 ER PT J AU Weimer, AW Dahl, JK Buechler, KJ Lewandowski, A Bingham, C Spath, P Amos, WA AF Weimer, AW Dahl, JK Buechler, KJ Lewandowski, A Bingham, C Spath, P Amos, WA TI Distributed hydrogen by rapid solar-thermal dissociation of methane. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Colorado, Dept Chem Engn, Boulder, CO 80309 USA. Natl Renewable Energy Lab, Thermal Grp, Golden, CO USA. NR 0 TC 1 Z9 1 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 139-FUEL BP U578 EP U579 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202970 ER PT J AU Willson, SP Veirs, DK Baiardo, J AF Willson, SP Veirs, DK Baiardo, J TI Infrared spectroscopic investigation of the matrix-isolated reaction products of molecular O-2 with laser-ablated plutonium atoms. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87544 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 332-PHYS BP U345 EP U345 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301829 ER PT J AU Wilson, EL Bender, BS AF Wilson, EL Bender, BS TI Moisture readsorption observed on plutonium dioxide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, NMT2, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 002-TECH BP U356 EP U356 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422201744 ER PT J AU Windus, TL Apra, E Harrison, RJ Johnson, BG AF Windus, TL Apra, E Harrison, RJ Johnson, BG TI Efficient parallelization of SCIF and DFT analytic second derivatives. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, High Performance Computat Chem 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 AUG 18 PY 2002 VL 224 MA 273-COMP BP U511 EP U511 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202598 ER PT J AU Wishart, JF Neta, P Grodkowski, J Lall, SI Engel, R AF Wishart, JF Neta, P Grodkowski, J Lall, SI Engel, R TI Picosecond radiolysis of ionic liquids. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. CUNY Queens Coll, Dept Chem & Biochem, Flushing, NY USA. CUNY, Grad Ctr, New York, NY USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 166-IEC BP U635 EP U635 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203241 ER PT J AU Withers, SH Schulte, A Braunstein, G Peale, RE Hess, WP Beck, KM Reeder, RJ AF Withers, SH Schulte, A Braunstein, G Peale, RE Hess, WP Beck, KM Reeder, RJ TI In the local structure of Nd3+ coprecipitated with calcite. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA. Pacific NW Natl Lab, Richland, WA USA. SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 029-GEOC BP U592 EP U592 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203039 ER PT J AU Wright, JV Conca, JL AF Wright, JV Conca, JL TI Remediation of groundwater and soil contaminated with metals and radionuclides using apatite II, a biogenic apatite mineral. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PIMS NW Inc, Carlsbad, NM 88220 USA. Los Alamos Natl Lab, 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 AUG 18 PY 2002 VL 224 MA 124-ENVR BP U537 EP U537 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202740 ER PT J AU Yamato, K Bartsch, R Dietz, ML Rogers, RD AF Yamato, K Bartsch, R Dietz, ML Rogers, RD TI Stereospecific syntheses of the trans-trans and cis-transisomers of dicyclohexano-18-crown-6. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA. RI Rogers, Robin/C-8265-2013 OI Rogers, Robin/0000-0001-9843-7494 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 032-ORGN BP U105 EP U105 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422300544 ER PT J AU Yu, XY AF Yu, XY TI Chemical mechanism of Cl-2- formation and decay by laser flash photolysis in aqueous solution containing chloride ions and hydrogen peroxide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Environm Sci, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 022-GEOC BP U591 EP U591 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203032 ER PT J AU Zepeda, S Orme, CA Yeh, Y DeYoreo, JJ Noy, A AF Zepeda, S Orme, CA Yeh, Y DeYoreo, JJ Noy, A TI Entropic barriers in nanoscale adhesion studied by variable temperature chemical force microscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Davis, Davis, CA 95616 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 066-COLL BP U406 EP U406 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422202014 ER PT J AU Zhang, CG Hay, BP AF Zhang, CG Hay, BP TI Computer-aided design of cesium receptors based on calix[4]arene scaffolds. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, WR Wiley 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 AUG 18 PY 2002 VL 224 MA 432-INOR BP U709 EP U709 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RL UT WOS:000177422203673 ER PT J AU Zhang, JZ Wu, FX Lewis, J Kliger, DS Joly, AG Chen, W Roark, J AF Zhang, JZ Wu, FX Lewis, J Kliger, DS Joly, AG Chen, W Roark, J TI Novel nonlinear optical properties of doped and undoped semiconductor nanoparticles. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. Pacific NW Natl Lab, Richland, WA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 377-PHYS BP U352 EP U352 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301872 ER PT J AU Zou, P McGivern, WS Park, J Kim, H Schmitz, BA Nguyen, T Shu, JN North, SW AF Zou, P McGivern, WS Park, J Kim, H Schmitz, BA Nguyen, T Shu, JN North, SW TI Photodissociation studies of halogen-containing species: Quantum yields and energy, partitioning. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RI North, Simon/G-5054-2012 OI North, Simon/0000-0002-0795-796X NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 18 PY 2002 VL 224 MA 196-PHYS BP U324 EP U324 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA 583RM UT WOS:000177422301694 ER PT J AU Schindler, K Birn, J AF Schindler, K Birn, J TI Models of two-dimensional embedded thin current sheets from Vlasov theory SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article DE current sheet; substorm onset; growth phase; equilibrium ID EARTH PLASMA SHEET; SUBSTORM GROWTH-PHASE; COLLISIONLESS RECONNECTION; MAGNETOTAIL; HYBRID; SIMULATIONS; MOTION AB [1] This paper uses the steady state Vlasov theory to obtain an explicit description of the properties of thin current sheets in two space dimensions. The method is general; in particular, it is not restricted to local Maxwellian distribution functions. The treatment includes chaotic particle motion, and the plasma is treated as quasi-neutral. Such general equilibria are necessary for modeling observed structures in the Earth's magnetotail. In particular, this applies to thin current sheets embedded in wider sheets. Abandoning local Maxwellian distribution functions implies that the electric potential can no longer be transformed to zero such that additional efforts are required to include the electric field. Critical input parameters are the gyroscales of the different particle species and the ion/electron temperature ratio. The results illustrate how finite ion gyroscales affect the current sheet structure. Further aspects that are analyzed include the contributions of electrons and ions to the total current density, Hall currents, the occurrence of significant electric fields and the role of the ion/electron temperature ratio. The necessity of electric potentials in the self-consistent structure of thin current sheets of the present type may provide a link between the presence or formation of thin current sheets and auroral arcs. C1 Los Alamos Natl Lab, Atmospher Sci Grp, Los Alamos, NM 87545 USA. Ruhr Univ Bochum, Inst Theoret Phys 4, D-44780 Bochum, Germany. RP Schindler, K (reprint author), Los Alamos Natl Lab, Atmospher Sci Grp, MS D466, Los Alamos, NM 87545 USA. NR 28 TC 67 Z9 67 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD AUG 17 PY 2002 VL 107 IS A8 AR 1193 DI 10.1029/2001JA000304 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 622EV UT WOS:000179634300001 ER PT J AU Lichtner, PC Kelkar, S Robinson, B AF Lichtner, PC Kelkar, S Robinson, B TI New form of dispersion tensor for axisymmetric porous media with implementation in particle tracking SO WATER RESOURCES RESEARCH LA English DT Article DE anisotropy; dispersion; particle tracking; transport ID NUMERICAL-SIMULATION; TRANSPORT; HETEROGENEITY; MODELS AB [1] A general form of the dispersion tensor is derived for axisymmetric porous media involving four dispersivity coefficients corresponding to longitudinal and transverse dispersion in horizontal and vertical directions, defined as perpendicular and parallel to the axis of symmetry, respectively. The general form of the dispersion tensor provides for distinct vertical and horizontal longitudinal dispersivity values. Transverse dispersion is isotropic for flow parallel to the symmetry axis and anisotropic for flow perpendicular to the symmetry axis with distinct horizontal and vertical transverse dispersivities. The new form of the dispersion tensor is applied to several examples involving axisymmetric media utilizing particle tracking techniques and compared to the tensor proposed by Burnett and Frind [1987]. It is demonstrated that for the case of spatially variable flow the drift term del . (phiD)/phi must generally be included in the particle tracking algorithm to obtain accurate results. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Lichtner, PC (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Robinson, Bruce/F-6031-2010 NR 35 TC 15 Z9 15 U1 1 U2 4 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 AUG 17 PY 2002 VL 38 IS 8 AR 1146 DI 10.1029/200WR000100 PG 16 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 622JH UT WOS:000179643600001 ER PT J AU Moran, JE Oktay, SD Santschi, PH AF Moran, JE Oktay, SD Santschi, PH TI Sources of iodine and iodine 129 in rivers SO WATER RESOURCES RESEARCH LA English DT Article DE iodine; iodine 129; nuclear; reprocessing; anthropogenic; river ID WORLD WATER CHEMISTRY; WESTERN NEW-YORK; ANTHROPOGENIC I-129; MARINE-SEDIMENTS; METHYL-BROMIDE; SURFACE SOILS; NUCLEAR; GEOCHEMISTRY; ENVIRONMENT; DISPERSAL AB [1] A spatial survey of iodine and its long-lived isotope, (129)I, in 40 rivers of the USA, Canada, and western Europe, reveals that the ratio of (129)I/I is a sensitive indicator for the influence of nuclear fuel reprocessing facilities. Rivers with point sources for (129)I in their watersheds are drastically affected, while all rivers sampled show evidence for atmospherically transported (129)I from the world's major nuclear fuel reprocessing facilities. Varying mixtures of oceanic cyclic salt and soil-derived iodine account for the observed spatial variation in iodine concentrations. A comparison of (129)I concentrations in river and rainwater reveals concentration effects due to evapotranspiration. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Texas A&M Univ, Dept Oceanog, Galveston, TX USA. RP Moran, JE (reprint author), Lawrence Livermore Natl Lab, L-231,POB 808, Livermore, CA 94550 USA. EM moran10@llnl.gov RI Santschi, Peter/D-5712-2012 NR 63 TC 45 Z9 46 U1 1 U2 25 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 AUG 17 PY 2002 VL 38 IS 8 AR 1149 DI 10.1029/2001WR000622 PG 10 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 622JH UT WOS:000179643600004 ER PT J AU Winter, CL Tartakovsky, DM AF Winter, CL Tartakovsky, DM TI Groundwater flow in heterogeneous composite aquifers SO WATER RESOURCES RESEARCH LA English DT Article DE random; stochastic; nonstationary; effective; upscaled; decomposition ID STEADY-STATE FLOW; POROUS-MEDIA; CONDUCTIVITIES; PERMEABILITY; TRANSPORT; DOMAINS; SCALE AB [1] We introduce a stochastic model of flow through highly heterogeneous, composite porous media that greatly improves estimates of pressure head statistics. Composite porous media consist of disjoint blocks of permeable materials, each block comprising a single material type. Within a composite medium, hydraulic conductivity can be represented through a pair of random processes: (1) a boundary process that determines block arrangement and extent and (2) a stationary process that defines conductivity within a given block. We obtain second-order statistics for hydraulic conductivity in the composite model and then contrast them with statistics obtained from a standard univariate model that ignores the boundary process and treats a composite medium as if it were statistically homogeneous. Next, we develop perturbation expansions for the first two moments of head and contrast them with expansions based on the homogeneous approximation. In most cases the bivariate model leads to much sharper perturbation approximations than does the usual model of flow through an undifferentiated material when both are applied to highly heterogeneous media. We make this statement precise. We illustrate the composite model with examples of one-dimensional flows which are interesting in their own right and which allow us to compare the accuracy of perturbation approximations of head statistics to exact analytical solutions. We also show the boundary process of our bivariate model is equivalent to the indicator functions often used to represent composite media in Monte Carlo simulations. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Winter, CL (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RI Tartakovsky, Daniel/E-7694-2013; Winter, C. Larrabee/D-3918-2013 NR 23 TC 32 Z9 32 U1 1 U2 20 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 AUG 17 PY 2002 VL 38 IS 8 AR 1148 DI 10.1029/2001WR000450 PG 11 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 622JH UT WOS:000179643600003 ER PT J AU Muhlstein, CL Stach, EA Ritchie, RO AF Muhlstein, CL Stach, EA Ritchie, RO TI A reaction-layer mechanism for the delayed failure of micron-scale polycrystalline silicon structural films subjected to high-cycle fatigue loading SO ACTA MATERIALIA LA English DT Article DE silicon; fatigue; thin films; MEMS; self-assembled monolayer coatings ID SINGLE-CRYSTAL SILICON; SUBCRITICAL CRACK-GROWTH; DIMENSIONAL THERMAL-OXIDATION; FRACTURE-TOUGHNESS; ROOM-TEMPERATURE; DRY OXIDATION; THIN-FILMS; BEHAVIOR; STRESS; AIR AB A study has been made to discern the mechanisms for the delayed failure of 2-mum thick structural films of n(+)-type, polycrystalline silicon under high-cycle fatigue loading conditions. Such polycrystalline silicon films are used in small-scale structural applications including microelectromechanical systems (MEMS) and are known to display 'metal-like' stress-life (SIN) fatigue behavior in room temperature air environments. Previously, fatigue lives in excess of 10(11) cycles have been observed at high frequency (similar to40 kHz), fully-reversed stress amplitudes as low as half the fracture strength using a surface micromachined, resonant-loaded, fatigue characterization structure. In this work the accumulation of fatigue-induced oxidation and cracking of the native SiO2 of the polycrystalline silicon was established using transmission electron and infrared microscopy and correlated with experimentally observed changes in specimen compliance using numerical models. These results were used to establish that the mechanism of the apparent fatigue failure of thin-film silicon involves sequential oxidation and environmentally-assisted crack growth solely within the native SiO2 layer. This 'reaction-layer fatigue' mechanism is only significant in thin films where the critical crack size for catastrophic failure can be reached by a crack growing within the oxide layer. It is shown that the susceptibility of thin-film silicon to such failures can be suppressed by the use of alkene-based monolayer coatings that prevent the formation of the native oxide. (C) 2002 Acta. Materialia Inc. Published by Elsevier Science Ltd. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. RP Ritchie, RO (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Stach, Eric/D-8545-2011; Ritchie, Robert/A-8066-2008; OI Stach, Eric/0000-0002-3366-2153; Ritchie, Robert/0000-0002-0501-6998; Muhlstein, Christopher/0000-0002-5928-068X NR 51 TC 138 Z9 147 U1 0 U2 19 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD AUG 16 PY 2002 VL 50 IS 14 BP 3579 EP 3595 AR PII S1359-6454(02)00158-1 DI 10.1016/S1359-6454(02)00158-1 PG 17 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 584ZY UT WOS:000177499700005 ER PT J AU Foster, I AF Foster, I TI Nexus - Small worlds and the groundbreaking science of networks SO SCIENCE LA English DT Book Review C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. RP Foster, I (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 1 TC 4 Z9 4 U1 3 U2 8 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD AUG 16 PY 2002 VL 297 IS 5584 BP 1124 EP 1125 DI 10.1126/science.1074392 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 584BP UT WOS:000177447600026 ER PT J AU Foster, I AF Foster, I TI Small world - Uncovering nature's hidden networks SO SCIENCE LA English DT Book Review C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. RP Foster, I (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 1 TC 4 Z9 4 U1 3 U2 8 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD AUG 16 PY 2002 VL 297 IS 5584 BP 1124 EP 1125 DI 10.1126/science.1074392 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 584BP UT WOS:000177447600027 ER PT J AU Foster, I AF Foster, I TI Linked - The new science of networks SO SCIENCE LA English DT Book Review C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. RP Foster, I (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 1 TC 4 Z9 4 U1 3 U2 8 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD AUG 16 PY 2002 VL 297 IS 5584 BP 1124 EP 1125 DI 10.1126/science.1074392 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 584BP UT WOS:000177447600025 ER PT J AU Hoffman, JE McElroy, K Lee, DH Lang, KM Eisaki, H Uchida, S Davis, JC AF Hoffman, JE McElroy, K Lee, DH Lang, KM Eisaki, H Uchida, S Davis, JC TI Imaging quasiparticle interference in Bi2Sr2CaCu2O8+delta SO SCIENCE LA English DT Article ID SCANNING TUNNELING SPECTROSCOPY; SUPERCONDUCTING GAP ANISOTROPY; FERMI CONTOUR; SURFACE; STATE; SCATTERING; ELECTRONS; DENSITY AB Scanning tunneling spectroscopy of the high-T-c superconductor Bi2Sr2CaCu2O8+delta reveals weak, incommensurate, spatial modulations in the tunneling conductance. Images of these energy-dependent modulations are Fourier analyzed to yield the dispersion of their wavevectors. Comparison of the dispersions with photoemission spectroscopy data indicates that quasiparticle interference, due to elastic scattering between characteristic regions of momentum-space, provides a consistent explanation for the conductance modulations, without appeal to another order parameter. These results refocus attention on quasiparticle scattering processes as potential explanations for other incommensurate phenomena in the cuprates. The momentum-resolved tunneling spectroscopy demonstrated here also provides a new technique with which to study quasiparticles in correlated materials. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Natl Inst Stand & Technol, Div Electromagnet Technol, Boulder, CO 80305 USA. Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA. Agcy Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan. Univ Tokyo, Dept Superconduct, Tokyo 1138656, Japan. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Davis, JC (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Hoffman, Jennifer/H-4334-2011; mcelroy, kyle/D-1816-2013 OI Hoffman, Jennifer/0000-0003-2752-5379; NR 29 TC 383 Z9 386 U1 5 U2 51 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD AUG 16 PY 2002 VL 297 IS 5584 BP 1148 EP 1151 DI 10.1126/science.1072640 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 584BP UT WOS:000177447600039 PM 12142440 ER PT J AU Miller, AD Bezel, I Gaffney, KJ Garrett-Roe, S Liu, SH Szymanski, P Harris, CB AF Miller, AD Bezel, I Gaffney, KJ Garrett-Roe, S Liu, SH Szymanski, P Harris, CB TI Electron solvation in two dimensions SO SCIENCE LA English DT Article ID PHOTOELECTRON-SPECTROSCOPY; FEMTOSECOND DYNAMICS; AU(100) SURFACE; INTERFACES; ACETONITRILE; ORIENTATION; STATES AB Ultrafast two-photon photoemission has been used to study electron solvation at two-dimensional metal/polar-adsorbate interfaces. The molecular motion that causes the excess electron solvation is manifested as a dynamic shift in the electronic energy. Although the initially excited electron is delocalized in the plane of the interface, interactions with the adsorbate can lead to its localization. A method for determining the spatial extent of the localized electron in the plane of the interface has been developed. This spatial extent was measured to be on the order of a single adsorbate molecule. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. Miller Inst Basic Res Sci, Berkeley, CA 94720 USA. RP Harris, CB (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Garrett-Roe, Sean/C-6037-2011 OI Garrett-Roe, Sean/0000-0001-6199-8773 NR 33 TC 104 Z9 104 U1 2 U2 15 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD AUG 16 PY 2002 VL 297 IS 5584 BP 1163 EP 1166 DI 10.1126/science.1073571 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 584BP UT WOS:000177447600044 PM 12183625 ER PT J AU Roberto, FF Barnes, JM Bruhn, DF AF Roberto, FF Barnes, JM Bruhn, DF TI Evaluation of a GFP reporter gene construct for environmental arsenic detection SO TALANTA LA English DT Article DE arsenate; arsenite; biosensor; reporter gene; lux; GFP ID GREEN FLUORESCENT PROTEIN; BIOAVAILABLE HEAVY-METALS; ACTING REGULATORY PROTEIN; AUREUS PLASMID PI258; RESISTANCE OPERON; ESCHERICHIA-COLI; BACTERIAL RESISTANCES; TRANSLOCATING ATPASE; ARSB PROTEIN; ANION PUMP AB Detection of arsenic and other heavy metal contaminants in the environment is critical to ensuring safe drinking water and effective cleanup of historic activities that have led to widespread contamination of soil and groundwater. Biosensors have the potential to significantly reduce the costs associated with site characterization and long term environmental monitoring. By exploiting the highly selective and sensitive natural mechanisms by which bacteria and other living organisms respond to heavy metals, and fusing transcriptionally active components of these mechanisms to reporter genes, such as P-galactosidase, bacterial luciferase (lux), or green fluorescent protein (GFP) from marine jellyfish, it is possible to produce inexpensive, yet effective biosensors. This article describes the response to submicrogram quantities of arsenite and arsenate of a whole cell arsenic biosensor utilizing a GFP reporter gene. Published by Elsevier Science B.V. C1 EG&G Idaho Inc, Idaho Natl Engn Lab, Dept Biotechnol, Idaho Falls, ID 83415 USA. RP Roberto, FF (reprint author), EG&G Idaho Inc, Idaho Natl Engn Lab, Dept Biotechnol, POB 1625, Idaho Falls, ID 83415 USA. NR 47 TC 46 Z9 57 U1 2 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-9140 J9 TALANTA JI Talanta PD AUG 16 PY 2002 VL 58 IS 1 BP 181 EP 188 AR PII S0039-9140(02)00266-7 DI 10.1016/S0039-9140(02)00266-7 PG 8 WC Chemistry, Analytical SC Chemistry GA 588QX UT WOS:000177713100016 PM 18968744 ER PT J AU Peterson, DS Rohr, T Svec, F Frechet, JMJ AF Peterson, DS Rohr, T Svec, F Frechet, JMJ TI Enzymatic microreactor-on-a-chip: Protein mapping using trypsin immobilized on porous polymer monoliths molded in channels of microfluidic devices SO ANALYTICAL CHEMISTRY LA English DT Article ID IN-SITU POLYMERIZATION; CAPILLARY-ELECTROPHORESIS; SEPARATION MEDIA; AFFINITY-CHROMATOGRAPHY; LIQUID-CHROMATOGRAPHY; MACROPOROUS POLYMER; STATIONARY PHASES; MASS-SPECTROMETRY; CONTINUOUS BEDS; GLASS CHIP AB Enzymatic microreactors have been prepared in capillaries and on microfluidic chips by immobilizing trypsin on porous polymer monoliths consisting of 2-vinyl-4,4-dimethylazlactone, ethylene dimethacrylate, and acrylamide or 2-hydroxyethyl methacrylate. The azlactone functionalities react readily with amine and thiol groups of the enzyme to form stable covalent bonds. The optimized porous properties of the monoliths lead to very low back pressures enabling the use of simple mechanical pumping to carry out both the immobilization of the enzyme from its solution and the subsequent analyses of substrate solutions. The Michealis-Menten kinetic characteristics of the reactors were probed using a low molecular weight substrate: N-alpha-benzoyl-L-arginine ethyl ester. The effects of immobilization variables such as the concentration of trypsin in solution and percentage of azlactone functionalities in the monolith, as well as the effect of reaction time on the enzymatic activity, and of process variables such as substrate flow velocity and residence time in the reactor, were studied in detail. The proteolytic activity of the enzymatic microreactor on chip was demonstrated at different flow rates with the cleavage of fluorescently labeled casein used as a substrate. The excellent performance of the monolithic microreactor was also demonstrated with the digestion of myoglobin at the fast flow rate of 0.5 muL/min, which affords a residence time of only 11.7 s. The digest was then characterized using MALDI-TOF MS, and 102 out of 153 possible peptide fragments were identified giving a sequence coverage of 67%. C1 EO Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Frechet, JMJ (reprint author), EO Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. OI Peterson, Dominic/0000-0001-8244-565X; Frechet, Jean /0000-0001-6419-0163 FU NIGMS NIH HHS [GM-48364] NR 56 TC 261 Z9 271 U1 12 U2 113 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 AUG 15 PY 2002 VL 74 IS 16 BP 4081 EP 4088 DI 10.1021/ac020180q PG 8 WC Chemistry, Analytical SC Chemistry GA 585BF UT WOS:000177502700021 PM 12199578 ER PT J AU Shen, YF Zhao, R Berger, SJ Anderson, GA Rodriguez, N Smith, RD AF Shen, YF Zhao, R Berger, SJ Anderson, GA Rodriguez, N Smith, RD TI High-efficiency nanoscale liquid chromatography coupled on-line with mass spectrometry using nanoelectrospray ionization for proteomics SO ANALYTICAL CHEMISTRY LA English DT Article ID CAPILLARY ZONE ELECTROPHORESIS; ELECTROSPRAY-IONIZATION; PROTEIN IDENTIFICATION; INNER DIAMETERS; NARROW-BORE; Q-TOF; PEPTIDE; SENSITIVITY; COLUMNS; PERFORMANCE AB We describe high-efficiency (peak capacities of similar to10(3)) nanoscale (using column inner diameters down to 15 mum) liquid chromatography (nanoLC)/low flow rate electrospray (nanoESI) mass spectrometry (MS) for the sensitive analysis of complex global cellular protein enzymatic digests (i.e., proteomics). Using a liquid slurry packing method with carefully selected packing solvents, 87-cm-length capillaries having inner diameters of 14.9-74..5 pm were successfully packed with 3-mum C18-bonded porous (300-Angstrom pores) silica particles at a pressure of 18 000 psi. With a mobile-phase delivery pressure of 10 000 psi, these packed capillaries provided mobile-phase flow rates as low as similar to20 nL/min at LC linear velocities of similar to0.2 cm/s, which is near optimal for separation efficiency., To maintain chromatographic efficiency, unions with internal channel diameters as small as 10 pm were specially produced for connecting packed capillaries to replaceable nanoESI emitters having orifice diameters of 2-10 mum (depending on the packed capillary dimensions). Coupled on-line with a hybrid-quadrupole time-of-flight MS through the nanoESI interface, the nanoLC separations provided peak capacities of similar to10(3) for proteome proteolytic polypeptide mixtures when a positive feedback switching valve was used for quantitatively introducing samples. Over a relatively large range of sample loadings (e.g., 5-100 ng, and 50-500 ng of cellular proteolytic peptides for 14.9- and 29.7-mum-i.d. packed capillaries, respectively), the nanoLC/nanoESI MS response for low-abundance components of the complex mixtures was found to increase linearly with sample loading. The nanoLC/nanoESI-MS sensitivity also increased linearly with decreasing flow rate (or approximately inversely proportional to the square of the capillary inner diameter) in the flow range of 20-400 nL/min. Thus, except at the lower loadings, decreasing the separation capillary inner diameter has an effect equivalent to increasing sample loading, which is important for sample-limited proteomic applications. No significant effects on recovery of eluting polypeptides were observed using porous C 18 particles with surface pores of 300-Angstrom versus nonporous particles. Tandem MS analyses were also demonstrated using the high-efficiency nanoLC. seprations. Chromatographic, elution time, MS response intensity and Mass. measurement accuracy was examined between runs with a ingle column.(with a single nanoESI emitter), between different columns (same and different inner diameters with different nanoESI emitters), and for different samples. (various concentrations of cellular proteolytic peptides I) and demonstrated robust and reproducible sensitive analyses for complex proteomic samples. C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Smith, RD (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 FU NCI NIH HHS [CA 86340, CA 93306] NR 69 TC 206 Z9 208 U1 4 U2 58 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 AUG 15 PY 2002 VL 74 IS 16 BP 4235 EP 4249 DI 10.1021/ac0202280 PG 15 WC Chemistry, Analytical SC Chemistry GA 585BF UT WOS:000177502700041 PM 12199598 ER PT J AU De Chant, LJ AF De Chant, LJ TI Introduction of non-uniformity through linearization of the system governing turbulent, mixing of a scalar quantity in a 2-d mixing layer SO APPLIED MATHEMATICS AND COMPUTATION LA English DT Article DE turbulent mixing layer; self-similar; non-uniformity ID RAYLEIGH-TAYLOR INSTABILITY; NUMERICAL-SIMULATION AB The introduction of mathematical non-uniformity in the formulation of the turbulent mixing of a scalar quantity (mass, temperature, etc.) for a 2-d, free shear flow using Goertler's [ZAMM 22 (1942) 244] perturbation argument is discussed. Approximate, i.e. thin shear layer self-similar forms for mass, momentum and the scalar quantity are derived, and then linearized using Goertler's method. Though successful for the mean velocity field, the regular expansion yields inconsistent solutions for the transport of a scalar. Sources of the non-uniformity are identified using appropriate numerical methods for both non-linear and linear formulations. A consistent result is obtained by rescaling the independent variable and equation system and identifying dominant behavior. The results of this corrected formulation are shown to be consistent with the relationships obtained by the author using an approximate matched asymptotic expansion procedure. (C) 2002 Elsevier Science Inc. All rights reserved. C1 Los Alamos Natl Lab, Appl Theoret & Computat Phys Div, Los Alamos, NM 87545 USA. RP De Chant, LJ (reprint author), Los Alamos Natl Lab, Appl Theoret & Computat Phys Div, POB 1663,MS D413, Los Alamos, NM 87545 USA. NR 23 TC 0 Z9 0 U1 0 U2 2 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0096-3003 J9 APPL MATH COMPUT JI Appl. Math. Comput. PD AUG 15 PY 2002 VL 130 IS 2-3 BP 399 EP 413 AR PII S0096-3003(01)00108-4 DI 10.1016/S0096-3003(01)00108-4 PG 15 WC Mathematics, Applied SC Mathematics GA 572NT UT WOS:000176782200015 ER PT J AU Dimri, GP Martinez, JL Jacobs, JJL Keblusek, P Itahana, K van Lohuizen, M Campisi, J Wazer, DE Band, V AF Dimri, GP Martinez, JL Jacobs, JJL Keblusek, P Itahana, K van Lohuizen, M Campisi, J Wazer, DE Band, V TI The Bmi-1 oncogene induces telomerase activity and immortalizes human mammary epithelial cells SO CANCER RESEARCH LA English DT Article ID HUMAN-PAPILLOMAVIRUS TYPE-16; MUTANT P53-INDUCED IMMORTALIZATION; MYC TRANSGENIC MICE; C-MYC; HUMAN FIBROBLASTS; LIFE-SPAN; REPLICATIVE SENESCENCE; REVERSE-TRANSCRIPTASE; TUMOR-SUPPRESSOR; BREAST-CANCER AB The vast majority of breast cancers are carcinomas that arise from mammary epithelial cells (MECs). One of the key early events in tumorigenic transformation is the ability of cells to overcome replicative senescence. However, the precise genetic changes that are responsible for this event in MECs is largely unknown. Here, we report that Bmi-1, originally identified as a c-Myc cooperating oncoprotein, can bypass senescence, extend the replicative life span, and immortalize MECs. Furthermore, Bmi-1 was overexpressed in immortal MECs and several breast cancer cell lines. Overexpression of Bmi-1 in MECs led to activation of human telomerase reverse transcriptase (hTERT) transcription and induction of telomerase activity. Telomerase induction by Bmi-1 was an early event in the extension of the replicative life span and immortalization. Bmi-1 was not overexpressed in hTERT-immortalized MECs, suggesting that Bmi-1 functions upstream of hTERT. Although, c-Myc has been reported to induce telomerase in MECs, Bmi-1 appeared to act independently of c-Myc binding sequences in the hTERT promoter. Deletion analysis of the Bmi-1 protein suggested that the RING ringer, as well as a conserved helix-turn-helix-turn domain, were required for its ability to induce telomerase and immortalize MECs. These data suggest that Bmi-1 regulates telomerase expression in MECs and plays a role in the development of human breast cancer. C1 Tufts Univ New England Med Ctr, Dept Radiat Oncol, Div Radiat & Canc Biol, Boston, MA 02111 USA. Tufts Univ, Sch Med, Dept Biochem, Boston, MA 02111 USA. Netherlands Canc Inst, Div Mol Genet, NL-1066 CX Amsterdam, Netherlands. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Dimri, GP (reprint author), Tufts Univ New England Med Ctr, Dept Radiat Oncol, Div Radiat & Canc Biol, 750 Washington St,NEMC 824, Boston, MA 02111 USA. RI Itahana, Koji/J-5505-2013; Martinez-Guitarte, Jose-Luis/M-3990-2014 OI Itahana, Koji/0000-0002-7241-2894; Martinez-Guitarte, Jose-Luis/0000-0002-7722-864X FU NCI NIH HHS [CA70195]; NIA NIH HHS [AG09909, AG16851] NR 71 TC 253 Z9 286 U1 0 U2 15 PU AMER ASSOC CANCER RESEARCH PI BIRMINGHAM PA PO BOX 11806, BIRMINGHAM, AL 35202 USA SN 0008-5472 J9 CANCER RES JI Cancer Res. PD AUG 15 PY 2002 VL 62 IS 16 BP 4736 EP 4745 PG 10 WC Oncology SC Oncology GA 584YP UT WOS:000177496600034 PM 12183433 ER PT J AU Yang, M Fleming, GR AF Yang, M Fleming, GR TI Influence of phonons on exciton transfer dynamics: comparison of the Redfield, Forster, and modified Redfield equations (vol 275, pg 355, 2002) SO CHEMICAL PHYSICS LA English DT Correction ID PHOTOSYNTHETIC ANTENNA COMPLEXES; ENERGY-TRANSFER DYNAMICS; ELECTRON-TRANSFER; EXCITATION TRANSFER; QUANTUM DYNAMICS; RELAXATION DYNAMICS; OPTICAL-RESPONSE; CONDENSED PHASES; SYSTEMS; MOTION AB The effect of the reorganization of phonons on exciton transfer dynamics is examined. Starting from a general quantum master equation, we obtain population transfer rates for the Redfield, the Forster, and the modified Redfield equations and compare the predictions of these three models over various ranges of parameters. It is shown that the validity of the traditional Redfield equation is justified by a broad spectrum of phonons rather than a small magnitude of electron-phonon coupling strength as is usually implied. The modified Redfield equation suggested by Zhang et al. [J. Chem. Phys. 108 (1998) 7763] is shown to have a wide range of applicability and to reduce numerically to the traditional Redfield equation and the Forster equation in the respective limiting cases. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Yang, M (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. OI Yang, Mino/0000-0001-9504-0280 NR 46 TC 18 Z9 19 U1 0 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0104 J9 CHEM PHYS JI Chem. Phys. PD AUG 15 PY 2002 VL 282 IS 1 BP 161 EP + AR PII S0301-0104(02)00604-3 DI 10.1016/S0301-0104(02)00603-1 PG 19 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 580YA UT WOS:000177263300018 ER PT J AU Dodge, CJ Francis, AJ Gillow, JB Halada, GP Eng, C Clayton, CR AF Dodge, CJ Francis, AJ Gillow, JB Halada, GP Eng, C Clayton, CR TI Association of uranium with iron oxides typically formed on corroding steel surfaces SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID RAY-ABSORPTION SPECTROSCOPY; STAINLESS-STEEL; RUST; CORROSION; FERRIHYDRITE; PASSIVATION; ADSORPTION; GOETHITE; URANYL; IONS AB Decontamination of metal surfaces contaminated with low levels of radionuclides is a major concern at Department of Energy facilities. The development of an environmentally friendly and cost-effective decontamination process requires an understanding of their association with the corroding surfaces. We investigated the association of uranium with the amorphous and crystalline forms of iron oxides commonly formed on corroding steel surfaces. Uranium was incorporated with the oxide by addition during the formation of ferrihydrite, goethite, green rust II, lepidocrocite, maghemite, and magnetite. X-ray diffraction confirmed the mineralogical form of the oxide. EXAFS analysis at the U L-III edge showed that uranium was present in hexavalent form as a uranyl oxyhydroxide species with goethite, maghemite, and magnetite and as a bidentate inner-sphere complex with ferrihydrite and lepidocrocite. Iron was present in the ferric form with ferrihydrite, goethite, lepidocrocite, and maghemite; whereas with magnetite and green rust II, both ferrous and ferric forms were present with characteristic ferrous:total iron ratios of 0.65 and 0.73, respectively. In the presence of the uranyl ion, green rust II was converted to magnetite with concomitant reduction of uranium to its tetravalent form. The rate and extent of uranium dissolution in dilute HCl depended on its association with the oxide: uranium present as oxyhydroxide species underwent rapid dissolution followed by a slow dissolution of iron; whereas uranium present as an inner-sphere complex with iron resulted in concomitant dissolution of the uranium and iron. C1 Brookhaven Natl Lab, Dept Environm Sci, Upton, NY 11973 USA. SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA. RP Dodge, CJ (reprint author), Brookhaven Natl Lab, Dept Environm Sci, Upton, NY 11973 USA. NR 34 TC 84 Z9 85 U1 7 U2 44 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 AUG 15 PY 2002 VL 36 IS 16 BP 3504 EP 3511 DI 10.1021/es011450+ PG 8 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 584CA UT WOS:000177448600007 PM 12214641 ER PT J AU Maddalena, RL McKone, TE Kado, NY AF Maddalena, RL McKone, TE Kado, NY TI Exposure chamber measurements of mass transfer and partitioning at the plant/air interface SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID SEMIVOLATILE ORGANIC-COMPOUNDS; POLYCYCLIC AROMATIC-HYDROCARBONS; AIR-PASTURE TRANSFER; WELSH RAY GRASS; POLYCHLORINATED-BIPHENYLS; CHEMICAL VAPORS; FUGACITY MODEL; BIOCONCENTRATION; VEGETATION; SOIL AB Dynamic measures of air and vegetation concentrations in an exposure chamber and a two-box mass balance model are used to quantify factors that control the rate and extent of chemical partitioning between vegetation and the atmosphere. A continuous stirred flow-through exposure chamber was used to investigate the gas-phase transfer of pollutants between air and plants. A probabilistic two-compartment mass balance model of plant/air exchange within the exposure chamber was developed and used with measured concentrations from the chamber to simultaneously evaluate partitioning (K-pa), overall mass transfer across the plant/air interface (U-pa), and loss rates in the atmosphere (R-a) and aboveground vegetation (R-p). The approach is demonstrated using mature Capsicum annuum (bell pepper) plants exposed to phenanthrene (PH), anthracene (AN), fluoranthene (FL) and pyrene (PY) Measured values of log K-pa (V-[air]/V-[fresh plant]) were 5.7, 5.7, 6.0, and 6.2 for PH, AN, FL, and PY, respectively. Values of U-pa (m d(-1)) under the conditions of this study ranged from 42 for PH to 119 for FL. After correcting for wall effects the estimated, reaction half-lives in air were 3 9 and 25 h for AN, FL, and PY. Reaction half-lives in the plant compartment were 17, 6, 17, and 5 d for PH, AN, FL, and PY, respectively. The combined use of exposure chamber measurements and models provides a robust tool for simultaneously measuring several different transfer factors that are important for modeling the uptake of poliuta'nts into vegetation. C1 Ernest Orlando Lawerence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA. Calif Air Resources Board, Sacramento, CA 95812 USA. Univ Calif Davis, Davis, CA 95616 USA. RP Maddalena, RL (reprint author), Ernest Orlando Lawerence Berkeley Natl Lab, Environm Energy Technol Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 46 TC 16 Z9 17 U1 0 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD AUG 15 PY 2002 VL 36 IS 16 BP 3577 EP 3585 DI 10.1021/es0255554 PG 9 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 584CA UT WOS:000177448600018 PM 12214652 ER PT J AU Ryan, TJ Philippi, T Leiden, YA Dorcas, ME Wigley, TB Gibbons, JW AF Ryan, TJ Philippi, T Leiden, YA Dorcas, ME Wigley, TB Gibbons, JW TI Monitoring herpetofauna in a managed forest landscape: effects of habitat types and census techniques SO FOREST ECOLOGY AND MANAGEMENT LA English DT Article DE amphibian; conservation; coverboard; drift fence; forest management; herpetofauna; landscape; monitoring; reptile; surveying ID SALAMANDERS; AMPHIBIANS; ABUNDANCE; IMPACTS AB We surveyed the herpetofaunal (amphibian and reptile) communities inhabiting five types of habitat on a managed landscape. We conducted monthly surveys during 1997 in four replicate plots of each habitat type using several different methods of collection. Communities of the two wetland habitats (bottomland wetlands and isolated upland wetlands) were clearly dissimilar from the three terrestrial communities (recent clearcut, pine plantation, and mixed pine-hardwood forest). Among the three terrestrial habitats, the total herpetofaunal communities were dissimilar (P < 0.10), although neither faunal constituent group alone (amphibians and squamate reptiles) varied significantly with regard to habitat. Three survey techniques used in the terrestrial habitats were not equally effective in that they resulted in the collection of different subsets of the total herpetofauna. The drift fence technique revealed the presence of more species and individuals in every habitat and was the only one to detect species dissimilarity among habitats. Nonetheless, coverboards contributed to measures of abundance and revealed species not detected by other techniques. We suggest that a combination of census techniques be used when surveying and monitoring herpetofaunal communities in order to maximize the detection of species. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Savannah River Ecol Lab, Aiken, SC 29802 USA. NCASI, Clemson, SC 29634 USA. RP Gibbons, JW (reprint author), Savannah River Ecol Lab, Drawer E, Aiken, SC 29802 USA. NR 24 TC 48 Z9 59 U1 4 U2 33 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-1127 J9 FOREST ECOL MANAG JI For. Ecol. Manage. PD AUG 15 PY 2002 VL 167 IS 1-3 BP 83 EP 90 AR PII S0378-1127(01)00692-2 DI 10.1016/S0378-1127(01)00692-2 PG 8 WC Forestry SC Forestry GA 576UH UT WOS:000177023700007 ER PT J AU Cobble, JA Johnson, RP Cowan, TE Renard-Le Galloudec, N Allen, M AF Cobble, JA Johnson, RP Cowan, TE Renard-Le Galloudec, N Allen, M TI High resolution laser-driven proton radiography SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ELECTRON-EMISSION; IGNITION; FACILITY; PLASMA; SOLIDS; PULSES; BEAMS AB Laser-accelerated beams of Mega-electron volt protons have been produced at the Los Alamos Trident laser facility and used for high-resolution point-projection proton radiography of Au grids. The effective proton source size affords an inherent resolution of 2-3 mum in the object plane. The proton beam is characterized by ion time-of-flight Faraday cup measurements and nuclear particle track detectors. Laser-driven proton radiography appears promising as a valuable research tool for probing plasmas or modest density objects. (C) 2002 American Institute of Physics. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Gen Atom Co, Photon Div, San Diego, CA 92121 USA. Univ Nevada, Dept Phys, Reno, NV 89506 USA. Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. RP Cobble, JA (reprint author), Los Alamos Natl Lab, E-526, Los Alamos, NM 87545 USA. RI Cowan, Thomas/A-8713-2011 OI Cowan, Thomas/0000-0002-5845-000X NR 27 TC 67 Z9 68 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 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 2002 VL 92 IS 4 BP 1775 EP 1779 DI 10.1063/1.1494128 PG 5 WC Physics, Applied SC Physics GA 579HC UT WOS:000177171700006 ER PT J AU Lee, SH Cheong, HM Je Seong, M Liu, P Tracy, CE Mascarenhas, A Pitts, JR Deb, SK AF Lee, SH Cheong, HM Je Seong, M Liu, P Tracy, CE Mascarenhas, A Pitts, JR Deb, SK TI Microstructure study of amorphous vanadium oxide thin films using raman spectroscopy SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID OPTICAL-PROPERTIES; NICKEL-OXIDE; V2O5; LITHIUM; PENTOXIDE; MECHANISM; BEHAVIOR; INTERCALATION; GLASS AB Microstructural changes of amorphous V2O5 films with lithium intercalation are studied using Raman-scattering measurements. The Raman spectra of as-deposited films show two broad peaks around at 520 and 650 cm(-1), due to the stretching modes of the V-3-O and V-2-O bonds, respectively, and a relatively sharp peak at 1027 cm(-1) due to the V5+=O stretching mode of terminal oxygen atoms. In addition, there is a peak at 932 cm(-1) that we attribute to the V4+=O bonds. Comparison of the Raman spectra of V2O5 films with different oxygen deficiencies confirms this assignment. This Raman peak due to the stretching mode of the V4+=O bonds develops and shifts toward lower frequencies with increasing lithium concentration. Comparison to results from gasochromic hydrogen insertion indicates that the 932 cm(-1) Raman peak is not a result of vibrations which involve Li or H atoms. We propose that the V4+=O bonds are created by two different mechanisms: a direct conversion from V5+=O bonds and the breaking of the single oxygen bonds involving V4+ ions. (C) 2002 American Institute of Physics. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Sogang Univ, Dept Phys, Seoul 121742, South Korea. RP Lee, SH (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Lee, Sehee/A-5989-2011; Cheong, Hyeonsik/D-7424-2012; Liu, Ping/I-5615-2012 OI Cheong, Hyeonsik/0000-0002-2347-4044; NR 29 TC 46 Z9 47 U1 2 U2 19 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 2002 VL 92 IS 4 BP 1893 EP 1897 DI 10.1063/1.1495074 PG 5 WC Physics, Applied SC Physics GA 579HC UT WOS:000177171700026 ER PT J AU Moxom, J Xu, J Suzuki, R Ohdaira, T Brandes, G Flynn, JS AF Moxom, J Xu, J Suzuki, R Ohdaira, T Brandes, G Flynn, JS TI Characterization of Mg doped GaN by positron annihilation spectroscopy SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID VACANCIES; GALLIUM; LUMINESCENCE; DEFECTS; MOVPE AB Metalorganic vapor-phase epitaxially grown GaN films have been studied using beam positron annihilation spectroscopy. Positron lifetime and Doppler broadening of annihilation radiation measurements indicate that defects, probably Ga vacancies, are reduced in concentration when films are doped with Mg, as previously observed by other workers. In lightly doped films a homogeneous layer with a minimum defect concentration is present from just below the surface, to a depth of around 0.1 mum. For heavily doped films, there is evidence of a further substantial decrease in the defect concentration following an anneal to 900 degreesC. The effects of impurities and defects are discussed. (C) 2002 American Institute of Physics. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan. RP Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM iyi@ornl.gov NR 16 TC 12 Z9 12 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 2002 VL 92 IS 4 BP 1898 EP 1901 DI 10.1063/1.1492858 PG 4 WC Physics, Applied SC Physics GA 579HC UT WOS:000177171700027 ER PT J AU Chen, W Su, FH Li, GH Joly, AG Malm, JO Bovin, JO AF Chen, W Su, FH Li, GH Joly, AG Malm, JO Bovin, JO TI Temperature and pressure dependences of the Mn2+ and donor-acceptor emissions in ZnS : Mn2+ nanoparticles SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ZNS NANOCLUSTERS; LUMINESCENCE; NANOCRYSTALS; PHOTOLUMINESCENCE; SEMICONDUCTOR; SURFACE; METAL; SIZE AB Temperature and pressure dependent measurements have been performed on 3.5 nm ZnS:Mn2+ nanoparticles. As temperature increases, the donor-acceptor (DA) emission of ZnS:Mn2+ nanoparticles at 440 nm shifts to longer wavelengths while the Mn2+ emission (T-4(1)-(6)A(1)) shifts to shorter wavelengths. Both the DA and Mn2+ emission intensities decrease with temperature with the intensity decrease of the DA emission being much more pronounced. The intensity decreases are fit well with the theory of thermal quenching. As pressure increases, the Mn2+ emission shifts to longer wavelengths while the DA emission wavelength remains almost constant. The pressure coefficient of the DA emission in ZnS:Mn2+ nanoparticles is approximately -3.2 meV/GPa, which is significantly smaller than that measured for bulk materials. The relatively weak pressure dependence of the DA emission is attributed to the increase of the binding energies and the localization of the defect wave functions in nanoparticles. The pressure coefficient of Mn2+ emission in ZnS:Mn2+ nanoparticles is roughly -34.3 meV/GPa, consistent with crystal field theory. The results indicate that the energy transfer from the ZnS host to Mn2+ ions is mainly from the recombination of carriers localized at Mn2+ ions. (C) 2002 American Institute of Physics. C1 Nomad Inc, Stillwater, OK 74074 USA. Chinese Acad Sci, Inst Semicond, Natl Lab Superlattices & Microstruct, Beijing 100083, Peoples R China. Pacific NW Natl Lab, Richland, WA 99352 USA. Lund Univ, Ctr Chem & Chem Engn, SE-22100 Lund, Sweden. RP Chen, W (reprint author), Nomad Inc, 1024 S Innovat Way, Stillwater, OK 74074 USA. NR 39 TC 80 Z9 81 U1 2 U2 15 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 2002 VL 92 IS 4 BP 1950 EP 1955 DI 10.1063/1.1495070 PG 6 WC Physics, Applied SC Physics GA 579HC UT WOS:000177171700036 ER PT J AU Park, JY Phaneuf, RJ AF Park, JY Phaneuf, RJ TI Polarity dependence in pulsed scanning tunneling microscopy fabrication and modification of metal nanodots on silicon SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID FIELD EVAPORATION; NANOMETER-SCALE; GOLD NANOSTRUCTURES; ATOMIC-FORCE; AU NANODOTS; SURFACE; TIP; TEMPERATURE; DEPOSITION; STM AB We have investigated the fabrication and modification of gold and aluminum nanodots on Si (100) with scanning tunneling microscopy (STM). Dots of similar to10 nm diameter were deposited on a Si (100) substrate by the application of a voltage pulse between a coated STM tip and the sample. The pulse duration required for dot formation is several orders or magnitude longer than on metal substrates, and depends both on dopant type and concentration. Modification of existing nanodots was carried out by the application of additional, larger voltage pulses. For Au, negative tip pulses increase the size of a Au dot, while positive pulses allow "erasure" of Au dots. In contrast, negative tip pulses result in erasing Al dots while positive pulses lead to enlarging Al dots. The sense of the polarity dependence for the fabrication and modification of dots is consistent with the calculated difference in threshold for field evaporation between Au and Al negative and positive ions. (C) 2002 American Institute of Physics. C1 Univ Maryland, Dept Phys, College Pk, MD 20740 USA. Lab Phys Sci, College Pk, MD 20740 USA. Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20740 USA. RP Park, JY (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, B66-200, Berkeley, CA 94720 USA. EM jypark@lbl.gov RI Park, Jeong Young/A-2999-2008 NR 24 TC 17 Z9 18 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 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 2002 VL 92 IS 4 BP 2139 EP 2143 DI 10.1063/1.1495889 PG 5 WC Physics, Applied SC Physics GA 579HC UT WOS:000177171700066 ER PT J AU Mcelhanon, JR Russick, EM Wheeler, DR Loy, DA Aubert, JH AF Mcelhanon, JR Russick, EM Wheeler, DR Loy, DA Aubert, JH TI Removable foams based on an epoxy resin incorporating reversible Diels-Alder adducts SO JOURNAL OF APPLIED POLYMER SCIENCE LA English DT Article DE Diels-Alder polymers; resins; blowing agents AB We have successfully incorporated Diels-Alder reversible chemistry into epoxy resins. The Diels-Alder chemistry goes in the forward direction at 60 degreesC and reverses at or above 90 degreesC. One resin was formulated with other commercial ingredients into foamed epoxy. The foam, shown to have mechanical properties similar to foams formed with conventional epoxy resins, is being utilized for electronic encapsulation. Because of the built-in reversible chemistry, the foams can be easily removed by dissolution in 1-butanol at 90 degreesC. Removal allows for the rework, upgrading, or dismantlement of the electronic components. (C) 2002 Wiley Periodicals, Inc. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Aubert, JH (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 9 TC 71 Z9 73 U1 4 U2 34 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0021-8995 J9 J APPL POLYM SCI JI J. Appl. Polym. Sci. PD AUG 15 PY 2002 VL 85 IS 7 BP 1496 EP 1502 DI 10.1002/app.10753 PG 7 WC Polymer Science SC Polymer Science GA 562QM UT WOS:000176210500017 ER PT J AU Park, PW Ragle, CS Boyer, CL Balmer, ML Engelhard, M McCready, D AF Park, PW Ragle, CS Boyer, CL Balmer, ML Engelhard, M McCready, D TI In2O3/Al2O3 catalysts for NOx reduction in lean condition SO JOURNAL OF CATALYSIS LA English DT Article DE NOx; reduction; lean; In2O3; Al2O3; XPS; XRD; TPR; acrolein; acetaldehyde ID SELECTIVE REDUCTION; NITROGEN MONOXIDE; NITRIC-OXIDE; METHANE; HYDROCARBONS; ZEOLITE AB The lean NOx performance and catalytic properties of In2O3/Al2O3 catalysts were investigated. High lean NO,, activity was observed when propene was used as a reductant in the presence of 9% O-2 and 7% H2O at a space velocity of 30,000 h(-1). The optimum lean NOx activity of In2O3/Al2O3 catalysts was observed at a loading of 2.5 wt% indium on y-Al2O3 which was prepared by a Sol-gel technique (230 m(2)/g). When propane was used as a reductant, the In2O3/Al2O3 catalyst did not promote NOx reduction compared to the alumina substrate. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and temperature-programmed reduction (TPR) have been used to characterize a series of In2O3/Al2O3 catalysts to increase understanding of the surface structure of indium oxide species on the alumina support. The XRD data indicated that crystalline In2O3 was present at In2O3 loadings >5 wt% and the quantity of the crystalline phase increased as a function of indium loading. XPS results suggested that indium oxide existed as a well-dispersed phase up to 10 wt% indium. The well-dispersed or reducible indium oxide species below 400 C in TPR experiments were assigned as the sites which activate propene to oxygenated hydrocarbons such as acetaldehyde and acrolein. Alumina sites readily utilize the oxygenated hydrocarbons to reduce NOx. A bifunction mechanism was proposed to explain high NO, reduction over In2O3/Al2O3 catalysts. (C) 2002 Elsevier Science (USA). C1 Caterpillar Inc, Tech Ctr E854, Peoria, IL 61656 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Park, PW (reprint author), Caterpillar Inc, Tech Ctr E854, POB 1875, Peoria, IL 61656 USA. RI Engelhard, Mark/F-1317-2010; OI Engelhard, Mark/0000-0002-5543-0812 NR 18 TC 45 Z9 51 U1 6 U2 22 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9517 J9 J CATAL JI J. Catal. PD AUG 15 PY 2002 VL 210 IS 1 BP 97 EP 105 DI 10.1006/jcat.2002.3667 PG 9 WC Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA 586ZV UT WOS:000177616800010 ER PT J AU Glaesemann, KR Fried, LE AF Glaesemann, KR Fried, LE TI Improved heat capacity estimator for path integral simulations SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MONTE-CARLO SIMULATIONS; AB-INITIO APPROACH; STATISTICAL-MECHANICS; ELECTRONIC-STRUCTURE; MOLECULAR-DYNAMICS; ENERGY ESTIMATORS; QUANTUM-MECHANICS; ORDER CORRECTION; FOURIER; EFFICIENCY AB New path integral Monte Carlo constant volume specific heat (C-V) estimators are presented that improve upon the thermodynamic, virial, and centroid virial C-V estimators via a free particle projection. These projected estimators significantly reduce the numerical noise of the traditional estimators. The new projected thermodynamic estimator has particular advantages when derivatives of the potential are expensive to evaluate. A double virial estimator is derived for real space path integrals and comparisons are made to it. The centroid virial estimators are found to be significantly better than the noncentroid virial estimators. (C) 2002 American Institute of Physics. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Glaesemann, KR (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI Glaesemann, Kurt/B-4841-2010; Fried, Laurence/L-8714-2014; OI Fried, Laurence/0000-0002-9437-7700; Glaesemann, Kurt/0000-0002-9512-1395 NR 59 TC 23 Z9 23 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 2002 VL 117 IS 7 BP 3020 EP 3026 DI 10.1063/1493184 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 579WW UT WOS:000177202300004 ER PT J AU Beran, GJO Gwaltney, SR Head-Gordon, M AF Beran, GJO Gwaltney, SR Head-Gordon, M TI Can coupled cluster singles and doubles be approximated by a valence active space model? SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID GAUSSIAN-BASIS SETS; CORRELATED MOLECULAR CALCULATIONS; AB-INITIO CALCULATIONS; COPE REARRANGEMENT; ELECTRON CORRELATION; PERTURBATION-THEORY; ORBITAL METHODS; WAVE-FUNCTIONS; ENERGIES; ATOMS AB A new, efficient approximation for coupled cluster singles and doubles (CCSD) is proposed in which a CCSD calculation is performed in a valence active space followed by a second-order perturbative correction to account for the inactive singles and doubles cluster amplitudes. This method, denoted VCCSD(SD), satisfactorily reproduces CCSD results in a variety of test cases, including spectroscopic constants of diatomic molecules, reaction energies, the Cope rearrangement, and other relative energies. Use of VCCSD alone is significantly less satisfactory. Formally, the (OV4)-V-2 scaling of CCSD is reduced to o(2)v(2)V(2), where o is the number of active occupied orbitals, v is the number of active virtual orbitals, and V is the total number of virtual orbitals. We also investigate the role of orbital optimizations and the appropriate choice of an active space in such methods. (C) 2002 American Institute of Physics. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Beran, GJO (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Beran, Gregory/B-8684-2011; OI Beran, Gregory/0000-0002-2229-2580; Gwaltney, Steven/0000-0003-3833-5087 NR 44 TC 13 Z9 13 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 2002 VL 117 IS 7 BP 3040 EP 3048 DI 10.1063/1.1493181 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 579WW UT WOS:000177202300006 ER PT J AU Settersten, TB Dreizler, A Farrow, RL AF Settersten, TB Dreizler, A Farrow, RL TI Temperature- and species-dependent quenching of COB probed by two-photon laser-induced fluorescence using a picosecond laser SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID FEEDBACK DYE-LASER; CARBON-MONOXIDE; HYDROCARBON FLAMES; COMBUSTION GASES; NO; ABSORPTION; STATE; SPECTROSCOPY; LIFETIME; PRESSURE AB We report measurements of the temperature- and species-dependent cross sections for the quenching of fluorescence from the B (1)Sigma(+)(v=0) state of CO. Cross sections were measured for gas temperatures ranging from 293 K to 1031 K for quenching by H-2, N-2, O-2, CO, H2O, CO2, CH4, He, Ne, Ar, Kr, and Xe. The CO B (1)Sigma(+)(v=0) state was populated via two-photon excitation (B (1)Sigma(+)<--<--X (1)Sigma(+)), and the B (1)Sigma(+)-->A (1)Pi fluorescence was collected. Quenching cross sections were determined from the dependence of the fluorescence-decay rate on quencher-gas pressure. The temperature dependence of the cross sections is well described by a power law for all but the two weakest quenchers, He and Ne. (C) 2002 American Institute of Physics. C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. Tech Univ Darmstadt, Fachgebiet Energie & Kraftwerkstech, D-64287 Darmstadt, Germany. RP Settersten, TB (reprint author), Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. RI Settersten, Thomas/B-3480-2009 OI Settersten, Thomas/0000-0002-8017-0258 NR 40 TC 33 Z9 33 U1 0 U2 13 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 2002 VL 117 IS 7 BP 3173 EP 3179 DI 10.1063/1.1493198 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 579WW UT WOS:000177202300021 ER PT J AU Dang, LX Chang, TM Panagiotopoulos, AZ AF Dang, LX Chang, TM Panagiotopoulos, AZ TI Gibbs ensemble Monte Carlo simulations of coexistence properties of a polarizable potential model of water SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID LIQUID C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Univ Wisconsin Parkside, Dept Chem, Kenosha, WI 53141 USA. Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA. RP Dang, LX (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Panagiotopoulos, Athanassios/K-2955-2014 OI Panagiotopoulos, Athanassios/0000-0002-8152-6615 NR 14 TC 20 Z9 20 U1 0 U2 8 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 2002 VL 117 IS 7 BP 3522 EP 3523 DI 10.1063/1.1493190 PG 2 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 579WW UT WOS:000177202300063 ER PT J AU Wu, JZ Prausnitz, JM AF Wu, JZ Prausnitz, JM TI Generalizations for the potential of mean force between two isolated colloidal particles from Monte Carlo simulations SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE colloidal forces; electrostatic double layers; simulation ID COUNTERION-MEDIATED ATTRACTION; DOUBLE-LAYER INTERACTIONS; CHARGED SPHERES; ELECTROLYTES; AGGREGATION; STABILITY; RODS AB A substantial amount of experimental and numerical evidence has shown that the Derjaguin-Landau-Verwey-Overbeek theory is not suitable for describing those colloidal solutions that contain multivalent counterions. Toward improved understanding of such solutions, the authors report Monte Carlo calculations wherein, following Rouzina and Bloomfield, they postulate that, in the absence of van der Waals forces, the overall force between two isolated charged colloidal particles in electrolyte solutions is determined by a dimensionless parameter Gamma = z(2)l(B)/a, which measures the electrostatic repulsion between counterions adsorbed on the macroion surface, where z = counterion valence, l(B) = Bjerrum length, and a = average separation between counterions on the macroion surface calculated as if the macroion were fully neutralized. The authors find, first, that the maximum repulsion between like-charged macroions occurs at Gamma approximate to 0.5 and, second, that onset of attraction occurs at Gamma approximate to 1.8, essentially independent of the valence and concentration of the surrounding electrolyte. These observations might provide new understanding of interactions between electrostatic double layers and perhaps offer explanations for some electrostatic phenomena related to interactions between DNA molecules or proteins. (C) 2002 Elsevier Science (USA). C1 Univ Calif Riverside, Dept Chem Engn, Riverside, CA 92521 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Wu, JZ (reprint author), Univ Calif Riverside, Dept Chem Engn, Riverside, CA 92521 USA. RI Wu, Jianzhong/I-5164-2013; OI Wu, Jianzhong/0000-0002-4582-5941 NR 40 TC 8 Z9 8 U1 1 U2 7 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERF SCI JI J. Colloid Interface Sci. PD AUG 15 PY 2002 VL 252 IS 2 BP 326 EP 330 DI 10.1006/jcis.2002.8497 PG 5 WC Chemistry, Physical SC Chemistry GA 585DX UT WOS:000177509500009 PM 16290796 ER PT J AU Gary, SP Goldstein, BE Neugebauer, M AF Gary, SP Goldstein, BE Neugebauer, M TI Signatures of wave-ion interactions in the solar wind: Ulysses observations SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article DE solar wind; alpha particles; Alfven waves; Ulysses ID CYCLOTRON ANISOTROPY INSTABILITY; TEMPERATURE ANISOTROPY; PREFERENTIAL ACCELERATION; RESONANT ACCELERATION; INVERSE CORRELATION; HEAVY-IONS; PROTON; MAGNETOSHEATH; TURBULENCE; PLASMA AB [1] Theory and simulations predict that resonant wave-particle scattering by enhanced magnetic fluctuations yields characteristic signatures in properties of solar wind ions. Here Ulysses/Solar Wind Observations Over the Poles of the Sun (SWOOPS) instrument measurements of protons and alpha particles are examined to seek three types of these signatures: (1) a statistical constraint on the proton temperature anisotropy imposed by the electromagnetic proton cyclotron instability; (2) a correlation between the alpha anisotropy and the alpha/proton relative flow speed driven by electromagnetic alpha/proton instabilities; and (3) relationships among the proton anisotropy, the alpha anisotropy, and the alpha/proton speed induced by the cascade of long-wavelength Alfven fluctuations to ion cyclotron resonances at shorter wavelengths. No signatures of alpha/proton instabilities are found. However, the first example of the proton anisotropy constraint in the slow solar wind is demonstrated, and a theoretical prediction for Alfven/cyclotron wave acceleration in the fast wind is similar to a statistical lower bound observed on the alpha/proton speed. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. RP Gary, SP (reprint author), Los Alamos Natl Lab, MS D466, Los Alamos, NM 87545 USA. NR 46 TC 24 Z9 24 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 AUG 15 PY 2002 VL 107 IS A8 AR 1169 DI 10.1029/2001JA000269 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 611HB UT WOS:000179009600022 ER PT J AU Valek, PW Perez, JD Jahn, JM Pollock, CJ Wuest, MP Friedel, RHW Moore, TE Peterson, WK AF Valek, PW Perez, JD Jahn, JM Pollock, CJ Wuest, MP Friedel, RHW Moore, TE Peterson, WK TI Outflow from the ionosphere in the vicinity of the cusp SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article DE ionospheric outflow; cusp boundary ID BOUNDARY-LAYER; PLASMA SHEET; DIPOLE TILT; ION; MAGNETOSPHERE; LATITUDE; PRECIPITATION; INSTRUMENT; MISSION AB [1] Low-energy ion outflows from the ionosphere are known to be an important source of plasma for the magnetosphere. The objective of this study is to describe the spatial relationships between low-energy ionospheric outflows and the cusp. The analysis is similar to that used in superposed epoch analyses, except that a spatial reference is used instead of a temporal one. Data from the Thermal Ion Dynamics Experiment (TIDE) supported by data from the Toroidal Imaging Mass-Angle Spectrograph (TIMAS) and Hydra, during low-altitude, perigee passes over the South Pole by the Polar spacecraft are used. The presence of isotropic ions from the magnetosheath is used to define the equatorward boundary of the cusp. By using this magnetospheric boundary as a reference point instead of invariant latitude, the temporal variability of the cusp location with respect to the Earth is removed. Poleward of this boundary in the cusp proper, observations show ionospheric outflow in addition to the isotropic magnetosheath ions. A technique used to separate the ion distributions originating from the two sources is presented and applied in order to calculate moments of the outflowing ion distribution. Ionospheric outflow is found to occur in the cleft region that extends approximate to1.5degrees equatorward of the low-latitude cusp boundary and in the cusp that extends approximate to5degrees poleward of this boundary. Both the parallel and perpendicular temperatures of the outflowing ions are found to be approximately a factor of 3 larger on the equatorward side of this cusp boundary, i.e., in the cleft. C1 Auburn Univ, Dept Phys, Auburn, AL 36849 USA. SW Res Inst, San Antonio, TX 78228 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NASA, Goddard Space Flight Ctr, Interplanetary Phys Branch, Greenbelt, MD 20771 USA. Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA. RP Valek, PW (reprint author), SW Res Inst, 6220 Culebra Rd, San Antonio, TX 78228 USA. RI Friedel, Reiner/D-1410-2012; Moore, Thomas/D-4675-2012; Peterson, WK/A-8706-2009; OI Friedel, Reiner/0000-0002-5228-0281; Moore, Thomas/0000-0002-3150-1137; Peterson, WK/0000-0002-1513-6096; Valek, Philip/0000-0002-2318-8750 NR 24 TC 5 Z9 5 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 AUG 15 PY 2002 VL 107 IS A8 AR 1180 DI 10.1029/2001JA000107 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 611HB UT WOS:000179009600011 ER PT J AU Gleiman, S Chen, CK Datye, A Phillips, J AF Gleiman, S Chen, CK Datye, A Phillips, J TI Melting and spheroidization of hexagonal boron nitride in a microwave-powered, atmospheric pressure nitrogen plasma SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID PHASE-DIAGRAM; TORCH; PARTICLES; AFTERGLOW; BN AB We have developed a method for producing spherically-shaped, hexagonal phase boron nitride (hBN) particles of controlled diameter in the 10-100 micron size range. Specifically, platelet-shaped hBN particles are passed as an aerosol through a microwave-generated, atmospheric pressure, nitrogen plasma. In the plasma, agglomerates formed by collisions between input hBN particles, melt and form spheres. We postulate that this unprecedented process takes place in the unique environment of a plasma containing a high N-atom concentration, because in such an environment the decomposition temperature can be raised above the melting temperature. Indeed, given the following relationship (V. L. Vinogradov and Kostanovskii, Teplofizika Vysokikh Temperatur 29 (1991) 1112): BN(condensed) <----> B-(gas) + N-(gas). Standard equilibrium thermodynamics indicate that the decomposition temperature of hBN is increased in the presence of high concentrations of N atoms. We postulate that in our plasma system the N atom concentration is high enough to raise the decomposition temperature above the (undetermined) melting temperature. (C) 2002 Kluwer Academic Publishers. C1 Univ New Mexico, Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. Univ New Mexico, Ctr Microengineered Mat, Albuquerque, NM 87131 USA. RP Datye, A (reprint author), Univ New Mexico, Univ Calif Los Alamos Natl Lab, CMS C-930, Los Alamos, NM 87545 USA. RI Phillips, Jonathan/D-3760-2011; OI Datye, Abhaya/0000-0002-7126-8659 NR 25 TC 17 Z9 17 U1 1 U2 10 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD AUG 15 PY 2002 VL 37 IS 16 BP 3429 EP 3440 DI 10.1023/A:1016502804363 PG 12 WC Materials Science, Multidisciplinary SC Materials Science GA 576MG UT WOS:000177008600012 ER PT J AU Biner, SB AF Biner, SB TI Creep deformation and rupture behavior of a laminated metal matrix composite SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID FRACTURE-BEHAVIOR; REINFORCEMENT; MOSI2 AB In this study, the creep behavior of a laminated composite, composed of layers of metal matrix composite having 20 vol% particulate SiC and 2014-aluminum matrix and 6061-aluminum as the ductile layers, was investigated at 250degreesC under constant loading. In spite of the absence of delamination between the layers, the observed creep rates of the laminated composite were much higher and rupture times were much shorter than those seen for its constituent layers. This behavior is explained with a model based on laminate theory. (C) 2002 Kluwer Academic Publishers. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Biner, SB (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 13 TC 2 Z9 2 U1 0 U2 2 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD AUG 15 PY 2002 VL 37 IS 16 BP 3555 EP 3558 DI 10.1023/A:1016539812540 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA 576MG UT WOS:000177008600028 ER PT J AU Amberger, HD Reddmann, H Jank, S Zhang, LX Edelstein, NM AF Amberger, HD Reddmann, H Jank, S Zhang, LX Edelstein, NM TI Electronic structure of organometallic complexes of the f elements. 52. Magnetochemical, optical and magneto-optical characterization of (eta(5)-Cp)(3)Tm center dot THF SO JOURNAL OF ORGANOMETALLIC CHEMISTRY LA German DT Article DE thulium; cyclopentadienyl ligand; physical properties; vibronic coupling; crystal field analysis ID MOLECULAR-STRUCTURES; ADDUCTS; CRYSTAL; ASSIGNMENT; SPECTRA AB The absorption and magnetic circular dichroism spectra of the tetrahydrofuran adduct derived from tris(eta(5)-cyclopentadienyl)thulium(III) (Cp3Tm.THF) were measured at low temperatures. The absorption spectra exhibit partly severe differences compared with the previously communicated band maxima and relative intensities of sublimed material. The observed more intense groups of signals comprise purely electronic f-f- as well as weaker vibronic transitions (where low frequency skeleton vibrations are coupling). Both types of bands could be separated by comparing these groups of signals with those of additional weaker vibronic transitions at higher frequencies (which have to be associated with the v-CC vibration). In case of the multiplet F-3(3) the resulting crystal field states are identified on an experimental as well as a calculated basis. Besides, the temperature dependence of mu(eff)(2) of the base adducts CP3Tm.THF, CP3Tm.MeTHF and Cp3Tm.CNC6H11 was determined and is compared with the result of a model calculation. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Hamburg, Inst Anorgan & Angew Chem, D-20146 Hamburg, Germany. Univ Calif Berkeley, Div Chem Sci, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Amberger, HD (reprint author), Univ Hamburg, Inst Anorgan & Angew Chem, Martin Luther King Pl 6, D-20146 Hamburg, Germany. RI Zhang, Lixin/J-3324-2012 NR 35 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0022-328X J9 J ORGANOMET CHEM JI J. Organomet. Chem. PD AUG 15 PY 2002 VL 656 IS 1-2 BP 18 EP 26 AR PII S0022-328X(02)01421-3 DI 10.1016/S0022-328X(02)01421-3 PG 9 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA 584FQ UT WOS:000177456900003 ER PT J AU Lymar, SV Schwarz, HA Czapski, G AF Lymar, SV Schwarz, HA Czapski, G TI Reactions of the dihydroxylamine (HNO2-.) and hydronitrite (NO22-.) radical ions SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID AQUEOUS-SOLUTION; METHYL VIOLOGEN; RATE CONSTANTS AB The dihydroxylamine radical anion (HNO2-., With the H atom on the nitrogen atom) is produced by the reaction of H atoms in the pulse radiolysis of nitrite solutions and decays in water with a rate constant of 5.0 x 10(3) s(-1). Its absorption spectrum has a maximum at 270 nm with molar absorptivity of 2.8 x 10(3) M-1 cm(-1). The decay of HNO2-. is catalyzed by both acids and bases. The hydronitrite radical (NO22-.) produced by the reaction of e(aq)(-) with nitrite exhibits no absorption spectrum between 270 and 550 nm. It is much shorter-lived than HNO2-., disappearing at 1.6 x 10(6) s(-1) without generating any HNO2-.. Neither radical species has any observable pK(a)'s, but the pK(a) for HNO2-. has been estimated to be lower than 9;3 from the rate data on the hydroxide-catalyzed decomposition of this radical. Both HNO2-. and NO22-. reduce methyl viologen, and the. reduction by HNO2-. has been used to measure its yield, which is found to be 0.63 radicals per 100 eV. Thus, the production of HNO2-. by H atoms is quantitative. Collectively, these data represent a major revision of. the reductive radiation chemistry of nitrite. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Hebrew Univ Jerusalem, Dept Phys Chem, IL-91904 Jerusalem, Israel. RP Lymar, SV (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 16 TC 31 Z9 32 U1 1 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 AUG 15 PY 2002 VL 106 IS 32 BP 7245 EP 7250 DI 10.1021/jp0261071 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 582LZ UT WOS:000177353700001 ER PT J AU Wang, XP Schultz, AJ Halpern, Y AF Wang, XP Schultz, AJ Halpern, Y TI Kinetics of methane hydrate formation from polycrystalline deuterated ice SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID ELASTIC NEUTRON-SCATTERING; TRICALCIUM SILICATE; CLATHRATE HYDRATE; SUPERHEATED ICE; IN-SITU; DECOMPOSITION AB The kinetics of methane hydrate formation was investigated by in-situ time-of-flight neutron powder diffraction. Samples were prepared from deuterated ice particles (< 0.25 mm) and transformed to clathrate hydrate by pressurizing the system with methane gas. The rates of sI methane hydrate formation were measured in-situ under isothermal conditions with a methane pressure of 1000 psi (6.9 MPa). Kinetic data were analyzed in terms of a shrinking core model, including possible contributions of nucleation, methane diffusion, and interface reaction. The data support the hypothesis that methane hydrate formation reaction from ice particles is diffusion-controlled. The reaction starts quickly at the nucleation stage, which propagates to form a hydrate layer that covers the ice particle. Further reaction is limited by the growth of the hydrate layer and inward diffusion of methane molecules through the hydrate layer to the unreacted ice core. The reaction rate at the interface between hydrate and unreacted ice particle is fast compared to that of methane diffusion. The conversion of ice particle to methane hydrate follows Arrhenius behavior, from which an activation energy of 14.7(5) kcal/mol was derived. Complete transformation of ice to methane hydrate was achieved through temperature ramping-a nonisothermal procedure that involves slowly increasing the sample temperature through the ice melting point. C1 Argonne Natl Lab, Intense Pulsed Neutron Source & Energy Syst Div, Argonne, IL 60439 USA. RP Schultz, AJ (reprint author), Argonne Natl Lab, Intense Pulsed Neutron Source & Energy Syst Div, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Wang, Xiaoping/E-8050-2012 OI Wang, Xiaoping/0000-0001-7143-8112 NR 32 TC 62 Z9 63 U1 1 U2 24 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 15 PY 2002 VL 106 IS 32 BP 7304 EP 7309 DI 10.1021/jp025550t PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 582LZ UT WOS:000177353700008 ER PT J AU Dabkowska, I Rak, J Gutowski, M AF Dabkowska, I Rak, J Gutowski, M TI Computational study of hydrogen-bonded complexes between the most stable tautomers of glycine and uracil SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID DENSITY-FUNCTIONAL THEORY; NUCLEIC-ACID CONSTITUENTS; MOLECULAR-ORBITAL METHODS; SET SUPERPOSITION ERROR; AB-INITIO CALCULATIONS; GAUSSIAN-TYPE BASIS; DEPROTONATION ENTHALPIES; ORGANIC-MOLECULES; ABINITIO CALCULATIONS; ELECTRON-DIFFRACTION AB A total of 23 hydrogen bonded complexes between the lowest energy tautomers of uracil and glycine have been characterized at the density functional level of theory with a hybrid B3LYP exchange-correlation functional and 6-31++G** basis sets. The most stable complexes are formed when the carboxylic group of glycine is bound through two hydrogen bonds with a NH proton donor and an 0 proton acceptor of uracil, and stabilization energies for these cyclic structures span a range of, 12.3-15.6 kcal/mol. Interplay between the topological match among proton donor and acceptor sites involved in cyclic structures and their preference to, form single hydrogen bonds, measured by the values of proton affinity and deprotonation enthalpy, has been discussed. Upon formation of a uracil-glycine complex, the elongations of proton donor bonds and vibrational red shifts for proton donor stretching modes can reach 0.05, Angstrom and 650 cm(-1), respectively. These perturbations of proton donor bonds correlate with the magnitude of two-body interaction energy terms. A qualitative correlation was demonstrated between the values of proton affinity and deprotonation enthalpy of the sites involved in hydrogen bonds and the values of both the two-body interaction energy term and elongation of the proton donor bond. C1 Univ Gdansk, Dept Chem, PL-80952 Gdansk, Poland. Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Rak, J (reprint author), Univ Gdansk, Dept Chem, Sobieskiego 18, PL-80952 Gdansk, Poland. NR 81 TC 46 Z9 48 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 15 PY 2002 VL 106 IS 32 BP 7423 EP 7433 DI 10.1021/jp020947i PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 582LZ UT WOS:000177353700023 ER PT J AU Ellingson, RJ Blackburn, JL Yu, PR Rumbles, G Micic, OI Nozik, AJ AF Ellingson, RJ Blackburn, JL Yu, PR Rumbles, G Micic, OI Nozik, AJ TI Excitation energy dependent efficiency of charge carrier relaxation and photoluminescence in colloidal InP quantum dots SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID SEMICONDUCTOR NANOCRYSTALS; TRANSIENT ABSORPTION; ELECTRONIC-STRUCTURE; SPECTROSCOPY; DYNAMICS; EXCITONS; BAND AB Femtosecond transient absorption spectroscopy has been used together with time-integrated photoluminescence (PL) measurements to study charge carrier relaxation in colloidal InP quantum dots (QDs). Measurements of band-edge photoinduced bleaching as well as PL intensity measurements indicate that the fraction of charge carriers relaxing to the band-edge states depends on excitation wavelength, with a markedly reduced relaxation efficiency observed for excitation well above the absorption edge. The results concur with previous research on CdSe and InP QDs, and suggest that with increasing excitation energy there arise relaxation pathways involving surface or external energy states exhibiting reduced radiative efficiency. Such highly excited carriers are either inhibited or deviated from reaching the band-edge states. Excitation intensity dependent measurements indicate that those charge carriers which contribute to the band-edge absorption bleaching also contribute proportionally to the time-integrated PL spectrum. C1 Natl Renewable Energy Lab, Ctr Basic Sci, Golden, CO 80401 USA. RP Ellingson, RJ (reprint author), Natl Renewable Energy Lab, Ctr Basic Sci, Golden, CO 80401 USA. RI Blackburn, Jeffrey/D-7344-2012; Ellingson, Randy/H-3424-2013; Nozik, Arthur/A-1481-2012; Nozik, Arthur/P-2641-2016; OI Rumbles, Garry/0000-0003-0776-1462 NR 25 TC 45 Z9 45 U1 2 U2 16 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 AUG 15 PY 2002 VL 106 IS 32 BP 7758 EP 7765 DI 10.1021/jp025666p PG 8 WC Chemistry, Physical SC Chemistry GA 582MB UT WOS:000177354000006 ER PT J AU Khaliullin, RZ Bell, AT AF Khaliullin, RZ Bell, AT TI A density functional theory study of the oxidation of methanol to formaldehyde over vanadia supported on silica, titania, and zirconia SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID METAL-OXIDE CATALYSTS; CROSS-POLARIZATION; AB-INITIO; RAMAN-SPECTROSCOPY; SURFACE-STRUCTURE; LOCAL-STRUCTURE; INFRA-RED; NMR; DEHYDROGENATION; TEMPERATURE AB Density functional theory was used to investigate the mechanism and kinetics of methanol oxidation to formaldehyde over vanadia supported on silica, titania, and zirconia. The catalytically active site was modeled as an isolated VO(4) unit attached to the support. The calculated geometry and vibrational frequencies of the active site are in good agreement with experimental measurements both for model compounds and oxide-supported vanadia. Methanol adsorption is found to occur preferentially with the rupture of a V-O-M bond (M = Si, Ti, Zr) and with preferential attachment of a methoxy group to V. The vibrational frequencies of the methoxy group are in good agreement with those observed experimentally as are the calculated isobars. The formation of formaldehyde is assumed to occur via the transfer of an H atom of a methoxy group to the 0 atom of the V=O group. The activation energy for this process is found to be in the range of 199-214 kJ/mol, and apparent activation energies for the overall oxidation of methanol to formaldehyde are predicted to lie in the range of 112-123 kJ/mol, which is significantly higher than that found experimentally. Moreover, the predicted turnover frequency (TOF) for methanol oxidation is found to be essentially independent of support composition, whereas experiments show that the TOF is 10(3) greater for titania- and zirconia-supported vanadia than for silica-supported vanadia. On the basis of these findings, it is proposed that the formation of formaldehyde from methoxy groups may require pairs of adjacent VO(4) groups or V(2)O(7) dimer structures. C1 Lawrence Berkeley Natl Lab, Chem Sci Div, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA USA. RP Bell, AT (reprint author), Lawrence Berkeley Natl Lab, Chem Sci Div, Berkeley, CA 94720 USA. EM bell@cchem.berkeley.edu RI Khaliullin, Rustam/B-2672-2009; OI Khaliullin, Rustam/0000-0002-9073-6753; Bell, Alexis/0000-0002-5738-4645 NR 65 TC 75 Z9 75 U1 0 U2 19 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 AUG 15 PY 2002 VL 106 IS 32 BP 7832 EP 7838 DI 10.1021/jp014695h PG 7 WC Chemistry, Physical SC Chemistry GA 582MB UT WOS:000177354000016 ER PT J AU Tomalia, DA Frechet, JMJ AF Tomalia, DA Frechet, JMJ TI Discovery of dendrimers and dendritic polymers: A brief historical perspective SO JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY LA English DT Article DE dendrimers; nanotechnology; telechelics; artificial proteins; dendrigrafts; hyperbranched ID 2-DIRECTIONAL CASCADE MOLECULES; PHOTOINDUCED ELECTRON-TRANSFER; FUNDAMENTAL BUILDING-BLOCKS; CONVERGENT-GROWTH APPROACH; NANOSCOPIC CHEMISTRY SET; STARBURST DENDRIMERS; POLYETHER DENDRIMERS; MACROMOLECULES; ARCHITECTURE; MICELLES AB A brief historical perspective relating the discovery of dendrimers and other dendritic polymers is presented. Dendritic polymers are recognized as the fourth major class of macro molecular architecture consisting of four sub-classes, namely, (1) random hyper-branched, (2) dendrigrafts, (3) dendrons, and (4) dendrimers. The previous literature is reviewed with anecdotal events leading to implications for dendrimers in the emerging science of nanotechnology. (C) 2002 Wiley Periodicals, Inc. C1 Cent Michigan Univ, Dendrit Nanotechnol Ltd, Pk Lib, Mt Pleasant, MI 48859 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Tomalia, DA (reprint author), Cent Michigan Univ, Dendrit Nanotechnol Ltd, Pk Lib, Mt Pleasant, MI 48859 USA. OI Frechet, Jean /0000-0001-6419-0163 NR 89 TC 528 Z9 542 U1 10 U2 85 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0887-624X J9 J POLYM SCI POL CHEM JI J. Polym. Sci. Pol. Chem. PD AUG 15 PY 2002 VL 40 IS 16 BP 2719 EP 2728 DI 10.1002/pola.10301 PG 10 WC Polymer Science SC Polymer Science GA 576GF UT WOS:000176994300001 ER PT J AU Yim, H Kent, MS Jeon, HS Smith, G AF Yim, H Kent, MS Jeon, HS Smith, G TI Study of the interfacial structure in epoxy bilayer films using neutron reflection SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS LA English DT Article DE adhesives; crosslinking; diffusion; interfaces; neutron reflection ID INTERDIFFUSION; POLYSTYRENE; DIFFUSION; POLYMERS AB The interfacial structure in thin epoxy bilayer films was investigated with neutron reflection. For each experiment, a mixture of crosslinker and deuterated resin was spun onto a chemically similar, fully cured, protonated epoxy film. The reflectivity measurements were performed before and after curing the top epoxy film. We focused on the extent of penetration of the components of the top layer into the network of the bottom layer. The effect of the cure temperature of each layer was examined. In addition, the effect of the initial molecular weight of the oligomers in the top layer was probed by the partial curing of the mixture before spinning. As deposited, the components of the top layer penetrated the bottom layer to an extent that was largely independent of the aforementioned factors. The principal observation was that an additional penetration occurred with curing. This additional penetration was dependent upon both the molecular weight of the top layer and the cure temperature of the top layer relative to the glass-transition temperature of the bottom layer. A decrease in the thickness of the top layer with curing was also observed, which likely indicates some evaporation of oligomers. (C) 2002 Wiley Periodicals, Inc. C1 Sandia Natl Labs, Dept 1811, Albuquerque, NM 87185 USA. New Mexico Inst Min & Technol, Soccoro, NM USA. Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, LANSCE, Los Alamos, NM USA. RP Kent, MS (reprint author), Sandia Natl Labs, Dept 1811, POB 5800, Albuquerque, NM 87185 USA. NR 17 TC 4 Z9 4 U1 2 U2 7 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 AUG 15 PY 2002 VL 40 IS 16 BP 1709 EP 1718 DI 10.1002/polb.10230 PG 10 WC Polymer Science SC Polymer Science GA 576GK UT WOS:000176994800001 ER PT J AU Rasmussen, KO Kalosakas, G AF Rasmussen, KO Kalosakas, G TI Improved numerical algorithm for exploring block copolymer mesophases SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS LA English DT Article; Proceedings Paper CT Annual Meeting of the American-Physical-Society CY MAR, 2002 CL INDIANAPOLIS, INDIANA SP Amer Phys Soc DE block copolymers; self-consistent field theory; self-assembly; morphology ID UNSTABLE PHASES; ORDERED PHASES; FIELD-THEORY; SYSTEMS; MELT AB We present an improved algorithm of the self-consistent mean-field implementation that has been recently proposed for the calculation of block copolymer self-assembly. Without requiring prior knowledge of the symmetry of the mesophase segregation, the algorithm is numerically stable and significantly faster than previously proposed methods. These advantages provide a valuable tool for combinatorial screening of novel stable and metastable structural phases of block copolymers. We apply the method and demonstrate complex mesophases in linear, asymmetric triblock copolymer melts. (C) 2002 Wiley Periodicals, Inc. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Rasmussen, KO (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663,Mail Stop B262, Los Alamos, NM 87545 USA. RI Rasmussen, Kim/B-5464-2009; Kalosakas, George/L-6211-2013 OI Rasmussen, Kim/0000-0002-4029-4723; Kalosakas, George/0000-0001-7763-718X NR 24 TC 158 Z9 158 U1 2 U2 20 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 AUG 15 PY 2002 VL 40 IS 16 BP 1777 EP 1783 DI 10.1002/polb.10238 PG 7 WC Polymer Science SC Polymer Science GA 576GK UT WOS:000176994800008 ER PT J AU Butov, LV Gossard, AC Chemla, DS AF Butov, LV Gossard, AC Chemla, DS TI Macroscopically ordered state in an exciton system SO NATURE LA English DT Article ID COUPLED QUANTUM-WELLS; CONDENSATION; GAS AB There is a rich variety of quantum liquids-such as superconductors, liquid helium and atom Bose-Einstein condensates-that exhibit macroscopic coherence in the form of ordered arrays of vortices(1-4). Experimental observation of a macroscopically ordered electronic state in semiconductors has, however, remained a challenging and relatively unexplored problem. A promising approach for the realization of such a state is to use excitons, bound pairs of electrons and holes that can form in semiconductor systems. At low densities, excitons are Bose-particles(5), and at low temperatures, of the order of a few kelvin, excitons can form a quantum liquid-that is, a statistically degenerate Bose gas or even a Bose-Einstein condensate(5-7). Here we report photoluminescence measurements of a quasi-two-dimensional exciton gas in GaAs/AlGaAs coupled quantum wells and the observation of a macroscopically ordered exciton state. Our spatially resolved measurements reveal fragmentation of the ring-shaped emission pattern into circular structures that form periodic arrays over lengths up to 1 mm. C1 Univ Calif Berkeley, EO Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia. Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA. RP Butov, LV (reprint author), Univ Calif Berkeley, EO Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. NR 21 TC 316 Z9 323 U1 5 U2 39 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD AUG 15 PY 2002 VL 418 IS 6899 BP 751 EP 754 DI 10.1038/nature00943 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 583UF UT WOS:000177428000031 PM 12181559 ER PT J AU Choi, HJ Roundy, D Sun, H Cohen, ML Louie, SG AF Choi, HJ Roundy, D Sun, H Cohen, ML Louie, SG TI The origin of the anomalous superconducting properties of MgB2 SO NATURE LA English DT Article ID TUNNELING SPECTROSCOPY; ART.; ENERGY; GAPS; ANHARMONICITY; SCATTERING AB Magnesium diboride(1) differs from ordinary metallic superconductors in several important ways, including the failure of conventional models(2) to predict accurately its unusually high transition temperature, the effects of isotope substitution on the critical transition temperature, and its anomalous specific heat(3-5). A detailed examination of the energy associated with the formation of charge-carrying pairs, referred to as the 'superconducting energy gap', should clarify why MgB2 is different. Some early experimental studies have indicated that MgB2 has multiple gaps(3-9), but past theoretical studies(10-16) have not explained from first principles the origin of these gaps and their effects. Here we report an ab initio calculation of the superconducting gaps in MgB2 and their effects on measurable quantities. An important feature is that the electronic states dominated by orbitals in the boron plane couple strongly to specific phonon modes, making pair formation favourable. This explains the high transition temperature, the anomalous structure in the specific heat, and the existence of multiple gaps in this material. Our analysis suggests comparable or higher transition temperatures may result in layered materials based on B, C and N with partially filled planar orbitals. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Louie, SG (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Choi, Hyoung Joon/N-8933-2015; Sun, Hong/O-1206-2015 OI Choi, Hyoung Joon/0000-0001-8565-8597; NR 29 TC 630 Z9 641 U1 13 U2 114 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD AUG 15 PY 2002 VL 418 IS 6899 BP 758 EP 760 DI 10.1038/nature00898 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 583UF UT WOS:000177428000033 PM 12181561 ER PT J AU Lin, SY Chow, E Bur, J Johnson, SG Joannopoulos, JD AF Lin, SY Chow, E Bur, J Johnson, SG Joannopoulos, JD TI Low-loss, wide-angle Y splitter at similar to 1.6-mu m wavelengths built with a two-dimensional photonic crystal SO OPTICS LETTERS LA English DT Article ID SLAB; BRANCH AB We report a successful experimental realization of a photonic-crystal Y splitter operating at lambda similar to 1.6 mum. Our device has a large splitting angle of 120degrees and a miniature size of similar to3 mum x 3 mum. Furthermore, the Y-splitter loss is measured to be 0.5-1 dB at lambda = 1640-1680 nm, making the Y splitter promising for integrated photonic-circuit applications. These unique properties are attributed to the new guiding principle made possible by the photonic bandgap. (C) 2002 Optical Society of America. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. MIT, Dept Phys, Cambridge, MA 02139 USA. RP Lin, SY (reprint author), Sandia Natl Labs, POB 5800,MS 0603, Albuquerque, NM 87185 USA. NR 15 TC 83 Z9 87 U1 1 U2 7 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 AUG 15 PY 2002 VL 27 IS 16 BP 1400 EP 1402 DI 10.1364/OL.27.001400 PG 3 WC Optics SC Optics GA 584TF UT WOS:000177484300010 PM 18026459 ER PT J AU Waxer, LJ Kelly, JH Rothenberg, J Babushkin, A Bibeau, C Bayramian, A Payne, S AF Waxer, LJ Kelly, JH Rothenberg, J Babushkin, A Bibeau, C Bayramian, A Payne, S TI Precision spectral sculpting for narrow-band amplification of broadband frequency-modulated pulses SO OPTICS LETTERS LA English DT Article ID GENERATION; LIGHT AB Amplification of broadband frequency-modulated (FM) pulses in high-efficiency materials such as ytterbium-doped strontium fluorapatite results in significant gain narrowing, leading to reduced on-target bandwidths for beam smoothing and to conversion from frequency modulation to amplitude modulation (AM). To compensate for these effects, we have applied precision spectral sculpting, requiring both amplitude and phase shaping, to the amplification of broadband FM pulses in narrow-band gain media. We have demonstrated sculpting for centerline small-signal gains of 10(4), producing amplified pulses that have both sufficient bandwidths for on-target beam smoothing and temporal profiles that have no potentially damaging AM. (C) 2002 Optical Society of America. C1 Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. Phaethon Commun, Fremont, CA 94538 USA. IPG Photon, Oxford, MA 01540 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Waxer, LJ (reprint author), Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA. NR 11 TC 12 Z9 12 U1 0 U2 0 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 AUG 15 PY 2002 VL 27 IS 16 BP 1427 EP 1429 DI 10.1364/OL.27.001427 PG 3 WC Optics SC Optics GA 584TF UT WOS:000177484300019 PM 18026468 ER PT J AU Pielke, RA Marland, G Betts, RA Chase, TN Eastman, JL Niles, JO Niyogi, DDS Running, SW AF Pielke, RA Marland, G Betts, RA Chase, TN Eastman, JL Niles, JO Niyogi, DDS Running, SW TI The influence of land-use change and landscape dynamics on the climate system: relevance to climate-change policy beyond the radiative effect of greenhouse gases SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES LA English DT Article DE global climate change; regional climate change; landscape change; landscape dynamics; climate-system dynamics ID GENERAL-CIRCULATION MODEL; COVER CHANGES; DEFORESTATION; VEGETATION; CO2 AB Our paper documents that land-use change impacts regional and global climate through the surface-energy budget, as well as through the carbon cycle. The surface-energy budget effects may be more important than the carbon-cycle effects. However, land-use impacts on climate cannot be adequately quantified with the usual metric of 'global warming potential'. A new metric is needed to quantify the human disturbance of the Earth's surface-energy budget. This 'regional climate change potential' could offer a new metric for developing a more inclusive climate protocol. This concept would also implicitly provide a mechanism to monitor potential local-scale environmental changes that could influence biodiversity. C1 Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Meteorol Off, Hadley Ctr Climate Predict & Res, Bracknell RG12 2SY, Berks, England. Univ Colorado, Dept Geog, Boulder, CO 80309 USA. Univ Calif Berkeley, Energy & Resources Grp, Berkeley, CA 94720 USA. N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA. Univ Montana, Numer Terradynam Simulat Grp, Missoula, MT 59812 USA. RP Pielke, RA (reprint author), Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA. RI Pielke, Roger/A-5015-2009; Betts, Richard/P-8976-2015 NR 27 TC 339 Z9 361 U1 21 U2 114 PU ROYAL SOC LONDON PI LONDON PA 6 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 1364-503X J9 PHILOS T ROY SOC A JI Philos. Trans. R. Soc. Lond. Ser. A-Math. Phys. Eng. Sci. PD AUG 15 PY 2002 VL 360 IS 1797 BP 1705 EP 1719 DI 10.1098/rsta.2002.1027 PG 15 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 582GB UT WOS:000177340500010 PM 12460493 ER PT J AU Xue, YY Meng, RL Lorenz, B Meen, JK Sun, YY Chu, CW AF Xue, YY Meng, RL Lorenz, B Meen, JK Sun, YY Chu, CW TI Nonstoichiometry, defects and transport properties in MgB2 SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article AB The X-ray diffraction patterns of ceramic samples with different residual resistivity ratios show that the transport property of MgB2 is correlated with its microstrain. Direct wavelength-dispersive-spectrum measurement further suggests that the microstrain might be dominated by oxygen-related defects, although a correlation between the composition Mg:B and the lattice parameters a (c) has also been observed. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Houston, Dept Phys, Houston, TX 77204 USA. Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Chu, CW (reprint author), Univ Houston, Dept Phys, Houston, TX 77204 USA. NR 16 TC 19 Z9 19 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD AUG 15 PY 2002 VL 377 IS 1-2 BP 7 EP 14 AR PII S0921-4534(02)01163-2 DI 10.1016/S0921-4534(02)01163-2 PG 8 WC Physics, Applied SC Physics GA 596NT UT WOS:000178171500002 ER PT J AU Jung, CU Kim, HJ Park, MS Kim, MS Kim, JY Du, Z Lee, SI Kim, KH Betts, JB Jaime, M Lacerda, AH Boebinger, GS AF Jung, CU Kim, HJ Park, MS Kim, MS Kim, JY Du, Z Lee, SI Kim, KH Betts, JB Jaime, M Lacerda, AH Boebinger, GS TI Effects of unreacted Mg impurities on the transport properties of MgB2 SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article DE MgB2; high pressure; RRR; magnesium diboride ID SUPERCONDUCTING PROPERTIES; HIGH-PRESSURE; MAGNESIUM DIBORIDE; SINGLE-CRYSTALS; TEMPERATURE; WIRES; FIELD AB We synthesized polycrystalline MgB2 from a stoichiometric mixture of Mg and the B-11 isotope under different conditions. All the samples showed bulk superconductivity with T-c = 38-39 K. The samples containing the least amount of unreacted Mg showed the highest T-c and the sharpest transition width (AT.). A residual resistivity ratio (RRR) of similar to5.8, and a magnetoresistance (MR), at 40 K and 10 T-c of 12% were obtained for these samples. Moreover, there was no upturn of resistivity in a low temperature region at 10 T. The samples containing appreciable amounts of unreacted Mg showed quite different behaviors; the values of DeltaT(c), RRR, and MR were much larger. An upturn appeared in resistivity of the samples below about 50 K at 10 T and is thought to be due to the unreacted Mg. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Pohang Univ Sci & Technol, Natl Creat Res Initiat Ctr Superconduct, Pohang 790784, South Korea. Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea. Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. RP Lee, SI (reprint author), Pohang Univ Sci & Technol, Natl Creat Res Initiat Ctr Superconduct, Pohang 790784, South Korea. RI Jaime, Marcelo/F-3791-2015 OI Jaime, Marcelo/0000-0001-5360-5220 NR 30 TC 22 Z9 22 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD AUG 15 PY 2002 VL 377 IS 1-2 BP 21 EP 25 AR PII S0921-4534(02)01334-5 PG 5 WC Physics, Applied SC Physics GA 596NT UT WOS:000178171500004 ER PT J AU Moodenbaugh, AR Suenaga, M Lewis, LH Cox, DE Rupich, MW Riley, GN Li, Q Parrella, R AF Moodenbaugh, AR Suenaga, M Lewis, LH Cox, DE Rupich, MW Riley, GN Li, Q Parrella, R TI Superconducting critical current densities and synchrotron X-ray diffraction measurements of (Bi,Pb)(2)Sr2Ca2Cu3Oy/Ag composites SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article DE critical current density; grain alignment (texture) ID IN-SITU; TAPES; KINETICS; TEXTURE AB A series of multifilament composite conductors (tapes), (Bi,Pb)(2)Sr2Ca2Cu3Oy (Bi-2223)/Ag, was studied by transmission synchrotron X-ray diffraction, including e-axis texture studies, and by critical current measurements. The diffraction measurements indicate that the tapes typically consist of similar to90% Bi-2223 phase. Rocking curve studies of the Bi-2223 (2 0 0) peak reveal full widths at half maximum (FWHMs) in the range 13-19degrees. A weak correlation between rocking curve FWHMs and critical current densities suggests that the critical current values in these tapes may not be limited by the Bi-2223 c-axis orientation. (C) 2001 Elsevier Science B.V. All rights reserved. C1 Brookhaven Natl Lab, Dept Appl Sci, Div Mat Sci, Upton, NY 11973 USA. Amer Superconductor Corp, Westborough, MA 01581 USA. RP Moodenbaugh, AR (reprint author), Brookhaven Natl Lab, Dept Appl Sci, Div Mat Sci, POB 5000, Upton, NY 11973 USA. OI Moodenbaugh, Arnold/0000-0002-3415-6762 NR 12 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD AUG 15 PY 2002 VL 377 IS 1-2 BP 67 EP 74 AR PII S0921-4534(01)01118-2 DI 10.1016/S0921-4534(01)01118-2 PG 8 WC Physics, Applied SC Physics GA 596NT UT WOS:000178171500010 ER PT J AU Benedict, LX Spataru, CD Louie, SG AF Benedict, LX Spataru, CD Louie, SG TI Quasiparticle properties of a simple metal at high electron temperatures SO PHYSICAL REVIEW B LA English DT Article ID VERTEX CORRECTIONS; FIRST-PRINCIPLES; HOT ALUMINUM; SEMICONDUCTORS; ENERGIES AB We compute the real and imaginary parts of the quasiparticle self-energy Sigma due to the electron-electron interaction for electrons and holes in jellium and crystalline Al at electron temperatures approaching the Fermi temperature T-F. Re Sigma and Im Sigma are computed using a finite temperature generalization of the GW approximation. We find a decrease in the electron lifetime and an increase in the valence and conduction bandwidths as T is increased. Calculation of the spectral function A(k,E) reveals that the total weight in the quasiparticle peak is a very weak function of T, and that the basic peak structure remains for Tsimilar tofewx0.1T(F). These predictions suggest that at these electron temperatures, the prominent peak in the absorption spectrum of Al at similar to1.5 eV should be washed out due to lifetime broadening, even if the ions remain in their crystalline positions. C1 Lawrence Livermore Natl Lab, Div H, Livermore, CA 94550 USA. Lawrence Livermore Natl Lab, Adv Technol Directorate, Livermore, CA 94550 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Benedict, LX (reprint author), Lawrence Livermore Natl Lab, Div H, Livermore, CA 94550 USA. NR 25 TC 15 Z9 15 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 2002 VL 66 IS 8 AR 085116 DI 10.1103/PhysRevB.66.085116 PG 9 WC Physics, Condensed Matter SC Physics GA 593BW UT WOS:000177972500043 ER PT J AU Faleev, SV Stockman, MI AF Faleev, SV Stockman, MI TI Self-consistent random-phase approximation for interacting electrons in quantum wells and intersubband absorption SO PHYSICAL REVIEW B LA English DT Article ID QUASI-PARTICLE STATES; SEMICONDUCTORS; GAS; KINETICS; METALS; PLASMAS AB For electrons with Coulomb interaction confined in a quantum well, we have developed an approach based on the Kadanoff-Baym-Keldysh technique to calculate equilibrium Green's functions. This approach is based on iterative numerical computation of the retarded self-energy in the self-consistent random-phase approximation. For two subbands, at zero temperature, we have computed spectral functions, electron distributions, quasiparticle spectra, and the current-current correlation function that determines the intersubband absorption coefficient. Our computations of the optical absorption take into account the depolarization shift and vertex corrections. Apart from direct applications of this theory to the physics of semiconductor quantum well devices, the Green's functions obtained may also serve as self-consistent initial conditions for quantum kinetics problems in quantum wells. C1 Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA. Sandia Natl Labs, Livermore, CA 94551 USA. RP Stockman, MI (reprint author), Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA. NR 41 TC 18 Z9 18 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 2002 VL 66 IS 8 AR 085318 DI 10.1103/PhysRevB.66.085318 PG 11 WC Physics, Condensed Matter SC Physics GA 593BW UT WOS:000177972500076 ER PT J AU Kang, JS Nahm, K Kim, CK Olson, CG Pelzl, J Shim, JH Min, BI AF Kang, JS Nahm, K Kim, CK Olson, CG Pelzl, J Shim, JH Min, BI TI Valence-band photoemission study of R3S4 (R=La, Ce) SO PHYSICAL REVIEW B LA English DT Article ID RESONANT PHOTOEMISSION; 4F; SPECTRA; METALS; SPECTROSCOPY; DENSITY; STATES AB Electronic structures of R3S4 (R=La, Ce) has been investigated by using photoemission spectroscopy (PES) and electronic structure calculations performed in the LSDA and the LSDA+U method. The valence-band spectrum of La3S4 reveals that the electronic states near E-F have mainly La 5d character, in agreement with the LSDA calculation. The Ce 4f PES spectrum exhibits three prominent features at about -0.5 eV, -2.5 eV, and -5.5 eV. We interpret the Ce 4f spectrum as the essentially trivalent Ce 4f spectrum, and identify the peaks at -0.5 eV and -2.5 eV as the correlation-split 4f states, and the -5.5 eV peak as the hybridized 4f/5d states with S p electrons. The CIS and CFS yield spectra show that Ce3S4 has formally trivalent Ce3+ ions. Nearly half-metallic nature is obtained for ferromagnetic Ce3S4, and the LSDA+U calculation provides a reasonably good description of the electronic structure of Ce3S4. Superconductivity in La3S4 and the absence of the tetragonal distortion in Ce3S4 have been discussed based on their electronic structures. C1 Catholic Univ Korea, Dept Phys, Puchon 422743, South Korea. Yonsei Univ, Dept Phys, Wonju 220710, South Korea. Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea. Ruhr Univ Bochum, D-44780 Bochum, Germany. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea. RP Kang, JS (reprint author), Catholic Univ Korea, Dept Phys, Puchon 422743, South Korea. RI Shim, Ji Hoon/F-5375-2013 NR 31 TC 3 Z9 3 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 2002 VL 66 IS 7 AR 075108 DI 10.1103/PhysRevB.66.075108 PG 7 WC Physics, Condensed Matter SC Physics GA 593AV UT WOS:000177969800052 ER PT J AU Kim, CY Bedzyk, MJ Nelson, EJ Woicik, JC Berman, LE AF Kim, CY Bedzyk, MJ Nelson, EJ Woicik, JC Berman, LE TI Site-specific valence-band photoemission study of alpha-Fe2O3 SO PHYSICAL REVIEW B LA English DT Article ID ELECTRONIC-STRUCTURE; SPECTROSCOPY; FE2O3 AB We have measured the site-specific valence electronic structure of alpha-Fe2O3 by using a spatially modulated x-ray standing wave as the excitation source for photoemission. Contributions to the valence-band density of states from oxygen and iron ions are separated by this method. Both a bonding and nonbonding state originating from oxygen ions are obtained. The valence densities of states from iron agree well with predictions based on configuration-interaction cluster calculations by Fujimori [Phys. Rev. B 34, 1318 (1986)] which considered charge transfer from ligand to metal. The effects of strong hybridization between Fe and O valence states to x-ray emission and resonance photoemission are also evident. C1 Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. Northwestern Univ, Inst Environm & Catalysis, Evanston, IL 60208 USA. Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Kim, CY (reprint author), Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. RI Bedzyk, Michael/B-7503-2009; Bedzyk, Michael/K-6903-2013; Kim, Chang-Yong/I-3136-2014 OI Kim, Chang-Yong/0000-0002-1280-9718 NR 14 TC 23 Z9 23 U1 1 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 2002 VL 66 IS 8 AR 085115 DI 10.1103/PhysRevB.66.085115 PG 4 WC Physics, Condensed Matter SC Physics GA 593BW UT WOS:000177972500042 ER PT J AU Soderlind, P AF Soderlind, P TI First-principles elastic and structural properties of uranium metal SO PHYSICAL REVIEW B LA English DT Article ID GENERALIZED GRADIENT APPROXIMATION; LIGHT ACTINIDES; CRYSTAL-STRUCTURES; TRANSITION-METALS; BRILLOUIN-ZONE; SPECIAL POINTS; ALPHA-URANIUM; PHASE-DIAGRAM; PRESSURES; CONSTANTS AB Density-functional electronic structure calculations have been used to investigate the ambient pressure and low-temperature structural and elastic properties of uranium metal. The equilibrium volume and bulk modulus have been calculated within the generalized gradient approximation (GGA). Also, the effect of the relativistic spin-orbit interaction on these properties has been investigated. Calculated structural properties of alpha-U compare very favorably with experimental data. The nine elastic constants of this ground-state orthorhombic phase have also been calculated, and compare reasonably well with experimental data, especially when experimental data are extrapolated to zero temperature. The results of the present investigation suggest that density-functional theory, in its GGA formulation, accurately describe the electronic structure of uranium, and possible correlation effects are well accounted for within this theory. C1 Lawrence Livermore Natl Lab, Dept Phys, Livermore, CA 94550 USA. RP Soderlind, P (reprint author), Lawrence Livermore Natl Lab, Dept Phys, Livermore, CA 94550 USA. NR 36 TC 86 Z9 87 U1 1 U2 17 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 2002 VL 66 IS 8 AR 085113 DI 10.1103/PhysRevB.66.085113 PG 7 WC Physics, Condensed Matter SC Physics GA 593BW UT WOS:000177972500040 ER PT J AU Tzamalis, G Zaidi, NA Homes, CC Monkman, AP AF Tzamalis, G Zaidi, NA Homes, CC Monkman, AP TI Doping-dependent studies of the Anderson-Mott localization in polyaniline at the metal-insulator boundary SO PHYSICAL REVIEW B LA English DT Article ID MOLECULAR-WEIGHT POLYANILINE; CONDUCTING POLYMERS; DOPED POLYANILINE; CRITICAL REGIME; TRANSITION; TRANSPORT; DISORDER; ACID; REFLECTANCE; POLYPYRROLE AB Temperature-dependent dc conductivity measurements and infrared reflectivity measurements (20-9000 cm(-1)) were performed on a series of polyaniline samples with two different dopant acids at various doping levels. The typical fingerprints of a disordered metal such as a positive temperature coefficient of resistivity at high temperatures, a very high reflectivity in the far infrared, and a plasma resonance have been observed. The results were analyzed in the framework of the Anderson-Mott localization model and considerable consistency between transport studies and optical measurements was obtained. Various parameters enabling a comparative classification of the materials are also reported. C1 Univ Durham, Dept Phys, Durham DH1 3LE, England. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Tzamalis, G (reprint author), Univ Durham, Dept Phys, South Rd, Durham DH1 3LE, England. RI Monkman, Andrew/B-1521-2013 OI Monkman, Andrew/0000-0002-0784-8640 NR 39 TC 25 Z9 25 U1 0 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 2002 VL 66 IS 8 AR 085202 DI 10.1103/PhysRevB.66.085202 PG 8 WC Physics, Condensed Matter SC Physics GA 593BW UT WOS:000177972500050 ER PT J AU Wei, X Miranda, PB Zhang, C Shen, YR AF Wei, X Miranda, PB Zhang, C Shen, YR TI Sum-frequency spectroscopic studies of ice interfaces SO PHYSICAL REVIEW B LA English DT Article ID X-RAY-SCATTERING; VIBRATIONAL SPECTROSCOPY; SINGLE-CRYSTALS; 2ND-HARMONIC GENERATION; FORCE MICROSCOPY; WATER INTERFACES; PHASE-TRANSITION; NONLINEAR OPTICS; RAMAN-SPECTRUM; SOLID-SURFACES AB Sum-frequency vibrational spectroscopy was used to study the (0001) surface of hexagonal ice (I-h) in contact with: air, a hydrophobic substrate, and a hydrophilic substrate. The spectra in the O-H stretch frequency range were obtained at various temperatures. For the air/ice interface, the degree of orientational order of the dangling OH bonds at the surface was measured as a function of temperature. Surface disordering appears to set in around 200 K and increases dramatically with temperature, which is a strong indication of the presence of surface melting of ice. For the hydrophobic and hydrophilic ice interfaces, a similar temperature dependence of the hydrogen-bonded OH stretch peak was observed. The free OH stretch mode, however, appears to be different from that of the air/ice interface due to the interactions with substrates at the interfaces. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Wei, X (reprint author), Bell Labs, Lucent Technol, 600 Mt Ave, Murray Hill, NJ 07974 USA. RI Miranda, Paulo/C-5933-2012 OI Miranda, Paulo/0000-0002-2890-0268 NR 66 TC 82 Z9 82 U1 11 U2 59 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 2002 VL 66 IS 8 AR 085401 DI 10.1103/PhysRevB.66.085401 PG 13 WC Physics, Condensed Matter SC Physics GA 593BW UT WOS:000177972500097 ER PT J AU Yoon, YG Delaney, P Louie, SG AF Yoon, YG Delaney, P Louie, SG TI Quantum conductance of multiwall carbon nanotubes SO PHYSICAL REVIEW B LA English DT Article ID JUNCTIONS; TUBULES AB An analysis on the conductance of multiwall carbon nanotubes (MWNT's) is presented. Recent experiment indicated that MWNT's are good quantum conductors. Our theory shows that tunneling current between states on different walls of a defect-free, infinitely long MWNT is vanishingly small in general, which leads to the quantization of the conductance of the MWNT's. With a reasonable simple model, we explicitly show that the conductance of a capped MWNT can be determined by the outermost wall for an infinitely long nanotube. We apply the theory to finite MWNT's and estimate the generic interwall conductance to be negligible compared to the intrawall ballistic conductance. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Yoon, YG (reprint author), Princeton Univ, Princeton Mat Inst, Princeton, NJ 08544 USA. RI Yoon, Young-Gui/C-2978-2008 OI Yoon, Young-Gui/0000-0002-1071-8628 NR 24 TC 74 Z9 74 U1 2 U2 8 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 2002 VL 66 IS 7 AR 073407 DI 10.1103/PhysRevB.66.073407 PG 4 WC Physics, Condensed Matter SC Physics GA 593AV UT WOS:000177969800033 ER PT J AU Zamborszky, F Yu, W Raas, W Brown, SE Alavi, B Merlic, CA Baur, A AF Zamborszky, F Yu, W Raas, W Brown, SE Alavi, B Merlic, CA Baur, A TI Competition and coexistence of bond and charge orders in (TMTTF)(2)AsF6 SO PHYSICAL REVIEW B LA English DT Article ID HIGH-FIELD PHASE; BECHGAARD SALTS; ORGANIC SUPERCONDUCTORS; CONDUCTORS; STATE AB (TMTTF)(2)AsF6 undergoes two phase transitions upon cooling from 300 K. At T-CO=103 K a charge ordering (CO) occurs, and at T-SP(B=9 T)=11 K the material undergoes a spin-Peierls transition. Within the intermediate, CO phase, the charge disproportionation ratio is found to be at least 3:1 from C-13 NMR T-1(-1) measurements on spin-labeled samples. Above T-SP up to about 3T(SP) T-1(-1) is independent of temperature, indicative of low-dimensional magnetic correlations. With the application of about 0.15 GPa pressure, T-SP increases substantially, while T-CO is rapidly suppressed, demonstrating that the two orders are competing. The experiments are compared to results obtained from calculations on the one-dimensional extended Peierls-Hubbard model. C1 Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA. RP Zamborszky, F (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. RI Yu, Weiqiang/E-9722-2012 NR 25 TC 105 Z9 105 U1 3 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 2002 VL 66 IS 8 AR 081103 DI 10.1103/PhysRevB.66.081103 PG 4 WC Physics, Condensed Matter SC Physics GA 593BW UT WOS:000177972500003 ER PT J AU Barbieri, R Hall, LJ Nomura, Y AF Barbieri, R Hall, LJ Nomura, Y TI Softly broken supersymmetric desert from orbifold compactification SO PHYSICAL REVIEW D LA English DT Article ID SYMMETRY-BREAKING; EXTRA DIMENSIONS; MODELS; MASSES; TEV AB A new viewpoint for the gauge hierarchy problem is proposed: compactification at a large scale, 1/R, leads to a low energy effective theory with supersymmetry softly broken at a much lower scale, alpha/R. The hierarchy is induced by an extremely small angle alpha which appears in the orbifold compactification boundary conditions. The same orbifold boundary conditions break Peccei-Quinn symmetry, leading to a new solution to the mu problem. Explicit 5D theories are constructed with gauge groups SU(3)xSU(2)xU(1) and SU(5), with matter in the bulk or on the brane, which lead to the (next-to) minimal supersymmetric standard model below the compactification scale. In all cases the soft supersymmetry-breaking and mu parameters originate from bulk kinetic energy terms, and are highly constrained. The supersymmetric flavor and CP problems are solved. C1 Scuola Normale Super Pisa, I-56126 Pisa, Italy. Ist Nazl Fis Nucl, I-56126 Pisa, Italy. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. RP Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy. NR 16 TC 58 Z9 58 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD AUG 15 PY 2002 VL 66 IS 4 AR 045025 DI 10.1103/PhysRevD.66.045025 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 591ZN UT WOS:000177912000087 ER PT J AU Srivastava, PP Brodsky, SJ AF Srivastava, PP Brodsky, SJ TI Light-front formulation of the standard model SO PHYSICAL REVIEW D LA English DT Article ID CONE GAUGE; SCHWINGER MODEL; EQUIVALENCE THEOREM; QUANTIZED QCD; RENORMALIZATION; MOMENTUM; FIELD AB Light-front (LF) quantization in the light-cone (LC) gauge is used to construct a renormalizable theory of the standard model. The framework derived earlier for QCD is extended to the Glashow-Weinberg-Salam (GWS) model of electroweak interaction theory. The Lorentz condition is automatically satisfied in LF-quantized QCD in the LC gauge for the free massless gauge field. In the GWS model, with the spontaneous symmetry breaking present, we find that the 't Hooft condition accompanies the LC gauge condition corresponding to the massive vector boson. The two transverse polarization vectors for the massive vector boson may be chosen to be the same as found in QCD. The nontransverse and linearly independent third polarization vector is found to be parallel to the gauge direction. The corresponding sum over polarizations in the standard model, indicated by K-munu(k), has several simplifying properties similar to the polarization sum D-munu(k) in QCD. The framework is unitary and ghost free (except for the ghosts at k(+)=0 associated with the light-cone gauge prescription). The massive gauge field propagator has well-behaved asymptotic behavior. The interaction Hamiltonian of electroweak theory can be expressed in a form resembling that of covariant theory, plus additional instantaneous interactions which can be treated systematically. The LF formulation also provides a transparent discussion of the Goldstone boson (or electroweak) equivalence theorem, as the illustrations show. C1 Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. Stanford Univ, Stanford Linear Accelerator Ctr, Div Theory, Stanford, CA 94309 USA. Univ Estado Rio De Janeiro, Inst Fis, RJ-20550 Rio De Janeiro, Brazil. EM sjbth@slac.stanford.edu NR 64 TC 32 Z9 32 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD AUG 15 PY 2002 VL 66 IS 4 AR 045019 DI 10.1103/PhysRevD.66.045019 PG 19 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 591ZN UT WOS:000177912000081 ER PT J AU White, AR AF White, AR TI Chirality violation in QCD reggeon interactions SO PHYSICAL REVIEW D LA English DT Article ID FIELD-THEORY; GAUGE-THEORY; SCATTERING; AMPLITUDES; UNITARITY; OPERATOR; POMERON AB The appearance of the triangle graph infrared axial anomaly in reduced quark loops contributing to QCD triple-Regge interactions is studied. In a dispersion relation formalism, the anomaly can only be present in the contributions of unphysical triple discontinuities. In this paper an asymptotic discontinuity analysis is applied to high-order Feynman diagrams to show that the anomaly does indeed occur in sufficiently high-order Reggeized gluon interactions. The Reggeon states involved must contain Reggeized gluon combinations with the quantum numbers of the anomaly (winding-number) current. A direct connection with the well-known U(1) problem is thus established. Closely related diagrams that contribute to the pion or Pomeron and triple Pomeron couplings in color superconducting QCD are also discussed. C1 Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. RP Argonne Natl Lab, Div High Energy Phys, 9700 S Cass, Argonne, IL 60439 USA. EM arw@hep.anl.gov NR 31 TC 2 Z9 2 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD AUG 15 PY 2002 VL 66 IS 4 AR 045009 DI 10.1103/PhysRevD.66.045009 PG 24 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 591ZN UT WOS:000177912000071 ER PT J AU Link, JM Reyes, M Yager, PM Anjos, JC Bediaga, I Gobel, C Magnin, J Massafferri, A de Miranda, JM Pepe, IM dos Reis, AC Carrillo, S Casimiro, E Cuautle, E Sanchez-Hernandez, A Uribe, C Vazquez, F Agostino, L Cinquini, L Cumalat, JP O'Reilly, B Ramirez, JE Segoni, I Butler, JN Cheung, HWK Chiodini, G Gaines, I Garbincius, PH Garren, LA Gottschalk, E Kasper, PH Kreymer, AE Kutschke, R Benussi, L Bianco, S Fabbri, FL Zallo, A Cawlfield, C Kim, DY Park, KS Rahimi, A Wiss, J Gardner, R Kryemadhi, A Chang, KH Chung, YS Kang, JS Ko, BR Kwak, JW Lee, KB Choi, K Park, H Alimonti, G Barberis, S Cerutti, A Boschini, M D'Angelo, P DiCorato, M Dini, P Edera, L Erba, S Giammarchi, M Inzani, P Leveraro, F Malvezzi, S Menasce, D Mezzadri, M Moroni, L Pedrini, D Pontoglio, C Prelz, F Rovere, M Sala, S Davenport, TF Arena, V Boca, G Bonomi, G Gianini, G Liguori, G Merlo, MM Pantea, D Ratti, SP Riccardi, C Vitulo, P Hernandez, H Lopez, AM Mendez, H Mendez, L Montiel, E Olaya, D Paris, A Quinones, J Rivera, C Xiong, W Zhang, Y Wilson, JR Handler, T Mitchell, R Engh, D Hosack, M Johns, WE Nehring, M Sheldon, PD Stenson, K Vaandering, EW Webster, M Sheaff, M AF Link, JM Reyes, M Yager, PM Anjos, JC Bediaga, I Gobel, C Magnin, J Massafferri, A de Miranda, JM Pepe, IM dos Reis, AC Carrillo, S Casimiro, E Cuautle, E Sanchez-Hernandez, A Uribe, C Vazquez, F Agostino, L Cinquini, L Cumalat, JP O'Reilly, B Ramirez, JE Segoni, I Butler, JN Cheung, HWK Chiodini, G Gaines, I Garbincius, PH Garren, LA Gottschalk, E Kasper, PH Kreymer, AE Kutschke, R Benussi, L Bianco, S Fabbri, FL Zallo, A Cawlfield, C Kim, DY Park, KS Rahimi, A Wiss, J Gardner, R Kryemadhi, A Chang, KH Chung, YS Kang, JS Ko, BR Kwak, JW Lee, KB Choi, K Park, H Alimonti, G Barberis, S Cerutti, A Boschini, M D'Angelo, P DiCorato, M Dini, P Edera, L Erba, S Giammarchi, M Inzani, P Leveraro, F Malvezzi, S Menasce, D Mezzadri, M Moroni, L Pedrini, D Pontoglio, C Prelz, F Rovere, M Sala, S Davenport, TF Arena, V Boca, G Bonomi, G Gianini, G Liguori, G Merlo, MM Pantea, D Ratti, SP Riccardi, C Vitulo, P Hernandez, H Lopez, AM Mendez, H Mendez, L Montiel, E Olaya, D Paris, A Quinones, J Rivera, C Xiong, W Zhang, Y Wilson, JR Handler, T Mitchell, R Engh, D Hosack, M Johns, WE Nehring, M Sheldon, PD Stenson, K Vaandering, EW Webster, M Sheaff, M CA FOCUS Collaboration TI A new measurement of the Xi(0)(c) lifetime SO PHYSICS LETTERS B LA English DT Article ID LAMBDA(+)(C) AB Using data collected by the Fermilab experiment FOCUS, we measure the lifetime of the charmed baryon Xi(c)(0) using the decay channels Xi(c)(0) --> Xi(-) pi(+) and Xi(c)(0) --> Omega(-) K+. From a combined sample of 110 +/- 17 events we find tau (Xi(c)(0)) = 118(-12)(+14) +/-5 fs, where the first and second errors are statistical and systematic, respectively. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Calif Davis, Davis, CA 95616 USA. Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil. CINVESTAV, Mexico City 07000, DF, Mexico. Univ Colorado, Boulder, CO 80309 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Illinois, Urbana, IL 61801 USA. Indiana Univ, Bloomington, IN 47405 USA. Korea Univ, Seoul 136701, South Korea. Kyungpook Natl Univ, Taegu 702701, South Korea. Ist Nazl Fis Nucl, I-20133 Milan, Italy. Univ Milan, Milan, Italy. Univ N Carolina, Asheville, NC 28804 USA. Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy. Ist Nazl Fis Nucl, I-27100 Pavia, Italy. Univ Puerto Rico, Dept Geol, Mayaguez, PR 00681 USA. Univ S Carolina, Columbia, SC 29208 USA. Univ Tennessee, Knoxville, TN 37996 USA. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Wisconsin, Madison, WI 53706 USA. RP Link, JM (reprint author), Univ Calif Davis, Davis, CA 95616 USA. RI Bonomi, Germano/G-4236-2010; Kwak, Jungwon/K-8338-2012; Anjos, Joao/C-8335-2013; Link, Jonathan/L-2560-2013; Benussi, Luigi/O-9684-2014; Gobel Burlamaqui de Mello, Carla /H-4721-2016 OI Bonomi, Germano/0000-0003-1618-9648; Link, Jonathan/0000-0002-1514-0650; Benussi, Luigi/0000-0002-2363-8889; Gobel Burlamaqui de Mello, Carla /0000-0003-0523-495X NR 15 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD AUG 15 PY 2002 VL 541 IS 3-4 BP 211 EP 218 AR PII S0370-2693(02)02239-6 PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 585ZV UT WOS:000177558200002 ER PT J AU Link, JM Reyes, M Yager, PM Anjos, JC Bediaga, I Gobel, C Magnin, J Massafferri, A de Miranda, JM Pepe, IM dos Reis, AC Carrillo, S Casimiro, E Cuautle, E Sanchez-Hernandez, A Uribe, C Vazquez, F Agostino, L Cinquini, L Cumalat, JP O'Reilly, B Ramirez, JE Segoni, I Butler, JN Cheung, HWK Chiodini, G Gaines, I Garbincius, PH Garren, LA Gottschalk, E Kasper, PH Kreymer, AE Kutschke, R Benussi, L Bianco, S Fabbri, FL Zallo, A Cawlfield, C Kim, DY Park, KS Rahimi, A Wiss, J Gardner, R Kryemadhi, A Chang, KH Chung, YS Kang, JS Ko, BR Kwak, JW Lee, KB Cho, K Park, H Alimonti, G Barberis, S Cerutti, A Boschini, M D'Angelo, P DiCorato, M Dini, P Edera, L Erba, S Giammarchi, M Inzani, P Leveraro, F Malvezzi, S Menasce, D Mezzadri, M Moroni, L Pedrini, D Pontoglio, C Prelz, F Rovere, M Sala, S Davenport, TF Arena, V Boca, G Bonomi, G Gianini, G Liguori, G Merlo, MM Pantea, D Ratti, SP Riccardi, C Vitulo, P Hernandez, H Lopez, AM Mendez, H Paris, A Quinones, J Xiong, W Zhang, Y Wilson, JR Handler, T Mitchell, R Engh, D Hosack, M Johns, WE Nehring, M Sheldon, PD Stenson, K Vaandering, EW Webster, M Sheaff, M AF Link, JM Reyes, M Yager, PM Anjos, JC Bediaga, I Gobel, C Magnin, J Massafferri, A de Miranda, JM Pepe, IM dos Reis, AC Carrillo, S Casimiro, E Cuautle, E Sanchez-Hernandez, A Uribe, C Vazquez, F Agostino, L Cinquini, L Cumalat, JP O'Reilly, B Ramirez, JE Segoni, I Butler, JN Cheung, HWK Chiodini, G Gaines, I Garbincius, PH Garren, LA Gottschalk, E Kasper, PH Kreymer, AE Kutschke, R Benussi, L Bianco, S Fabbri, FL Zallo, A Cawlfield, C Kim, DY Park, KS Rahimi, A Wiss, J Gardner, R Kryemadhi, A Chang, KH Chung, YS Kang, JS Ko, BR Kwak, JW Lee, KB Cho, K Park, H Alimonti, G Barberis, S Cerutti, A Boschini, M D'Angelo, P DiCorato, M Dini, P Edera, L Erba, S Giammarchi, M Inzani, P Leveraro, F Malvezzi, S Menasce, D Mezzadri, M Moroni, L Pedrini, D Pontoglio, C Prelz, F Rovere, M Sala, S Davenport, TF Arena, V Boca, G Bonomi, G Gianini, G Liguori, G Merlo, MM Pantea, D Ratti, SP Riccardi, C Vitulo, P Hernandez, H Lopez, AM Mendez, H Paris, A Quinones, J Xiong, W Zhang, Y Wilson, JR Handler, T Mitchell, R Engh, D Hosack, M Johns, WE Nehring, M Sheldon, PD Stenson, K Vaandering, EW Webster, M Sheaff, M CA FOCUS Collaboration TI Measurement of the D+ and D-s(+) decays into K+K-K+ SO PHYSICS LETTERS B LA English DT Article ID DALITZ PLOTS; SEARCH AB We present the first clear observation of the doubly Cabibbo suppressed decay D+ --> K- K+ K+ and the first observation of the singly Cabibbo suppressed decay D-s(+) --> K-K+K+. These signals have been obtained by analyzing the high statistics sample of photoproduced charm particles of the FOCUS (E83 1) experiment at Fermilab. We measure the following relative branching ratios: Gamma(D+ --> K-K+K+)/Gamma(D+ --> K(-)pi(+)pi(+)) = (9.49 +/- 2.17 0.22) x 10(-4) and Gamma(D-s(+) --> K-K+K+)/Gamma(D-s(+) ---> K(-)K(+)pi(+)) = (8.95 +/- 2.12(-2.31)(+2.24)) x 10(-3) where the first error is statistical and the second is systematic. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Calif Davis, Davis, CA 95616 USA. Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil. CINVESTAV, Mexico City 07000, DF, Mexico. Univ Colorado, Boulder, CO 80309 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Illinois, Urbana, IL 61801 USA. Indiana Univ, Bloomington, IN 47405 USA. Korea Univ, Seoul 136701, South Korea. Kyungpook Natl Univ, Taegu 702701, South Korea. Ist Nazl Fis Nucl, I-20133 Milan, Italy. Univ Milan, Milan, Italy. Univ N Carolina, Asheville, NC 28804 USA. Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy. Ist Nazl Fis Nucl, I-27100 Pavia, Italy. Univ Puerto Rico, Mayaguez, PR 00681 USA. Univ S Carolina, Columbia, SC 29208 USA. Univ Tennessee, Knoxville, TN 37996 USA. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Wisconsin, Madison, WI 53706 USA. RP Link, JM (reprint author), Univ Calif Davis, Davis, CA 95616 USA. RI Bonomi, Germano/G-4236-2010; Gobel Burlamaqui de Mello, Carla /H-4721-2016; Menasce, Dario Livio/A-2168-2016; Gianini, Gabriele/M-5195-2014; Kwak, Jungwon/K-8338-2012; Anjos, Joao/C-8335-2013; Link, Jonathan/L-2560-2013; Benussi, Luigi/O-9684-2014 OI Bonomi, Germano/0000-0003-1618-9648; Gobel Burlamaqui de Mello, Carla /0000-0003-0523-495X; Menasce, Dario Livio/0000-0002-9918-1686; Gianini, Gabriele/0000-0001-5186-0199; Link, Jonathan/0000-0002-1514-0650; bianco, stefano/0000-0002-8300-4124; Kryemadhi, Abaz/0000-0002-1240-2803; Benussi, Luigi/0000-0002-2363-8889 NR 15 TC 10 Z9 10 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 AUG 15 PY 2002 VL 541 IS 3-4 BP 227 EP 233 AR PII S0370-2693(02)02240-2 DI 10.1016/S0370-2693(02)02240-2 PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 585ZV UT WOS:000177558200004 ER PT J AU Link, JM Reyes, M Yager, PM Anjos, JC Bediaga, I Gobel, C Magnin, J Massafferri, A de Miranda, JM Pepe, IM dos Reis, AC Carrillo, S Casimiro, E Cuautle, E Sanchez-Hernandez, A Uribe, C Vazquez, F Agostino, L Cinquini, L Cumalat, JP O'Reilly, B Ramirez, JE Segoni, I Butler, JN Cheung, HWK Chiodini, G Gaines, I Garbincius, PH Garren, LA Gottschalk, E Kasper, PH Kreymer, AE Kutschke, R Benussi, L Bianco, S Fabbri, FL Zallo, A Cawlfield, C Kim, DY Park, KS Rahimi, A Wiss, J Gardner, R Kryemadhi, A Chang, KH Chung, YS Kang, JS Ko, BR Kwak, JW Lee, KB Cho, K Park, H Alimonti, G Barberis, S Cerutti, A Boschini, M D'Angelo, P DiCorato, M Dini, P Edera, L Erba, S Giammarchi, M Inzani, P Leveraro, F Malvezzi, S Menasce, D Mezzadri, M Moroni, L Pedrini, D Pontoglio, C Prelz, F Rovere, M Sala, S Davenport, TF Arena, V Boca, G Bonomi, G Gianini, G Liguori, G Merlo, MM Pantea, D Ratti, SP Riccardi, C Vitulo, P Hernandez, H Lopez, AM Mendez, H Paris, A Quinones, J Xiong, W Zhang, Y Wilson, JR Handler, T Mitchell, R Engh, D Hosack, M Johns, WE Nehring, M Sheldon, PD Stenson, K Vaandering, EW Webster, M Sheaff, M AF Link, JM Reyes, M Yager, PM Anjos, JC Bediaga, I Gobel, C Magnin, J Massafferri, A de Miranda, JM Pepe, IM dos Reis, AC Carrillo, S Casimiro, E Cuautle, E Sanchez-Hernandez, A Uribe, C Vazquez, F Agostino, L Cinquini, L Cumalat, JP O'Reilly, B Ramirez, JE Segoni, I Butler, JN Cheung, HWK Chiodini, G Gaines, I Garbincius, PH Garren, LA Gottschalk, E Kasper, PH Kreymer, AE Kutschke, R Benussi, L Bianco, S Fabbri, FL Zallo, A Cawlfield, C Kim, DY Park, KS Rahimi, A Wiss, J Gardner, R Kryemadhi, A Chang, KH Chung, YS Kang, JS Ko, BR Kwak, JW Lee, KB Cho, K Park, H Alimonti, G Barberis, S Cerutti, A Boschini, M D'Angelo, P DiCorato, M Dini, P Edera, L Erba, S Giammarchi, M Inzani, P Leveraro, F Malvezzi, S Menasce, D Mezzadri, M Moroni, L Pedrini, D Pontoglio, C Prelz, F Rovere, M Sala, S Davenport, TF Arena, V Boca, G Bonomi, G Gianini, G Liguori, G Merlo, MM Pantea, D Ratti, SP Riccardi, C Vitulo, P Hernandez, H Lopez, AM Mendez, H Paris, A Quinones, J Xiong, W Zhang, Y Wilson, JR Handler, T Mitchell, R Engh, D Hosack, M Johns, WE Nehring, M Sheldon, PD Stenson, K Vaandering, EW Webster, M Sheaff, M CA FOCUS Collaboration TI New measurements of the Gamma(D+->(K)over-bar(*0)mu(+)nu)/Gamma(D+-> K-pi(+)pi(+)) and Gamma(D-s(+)->phi mu(+)nu)/Gamma(D-s(+)->phi pi(+)) branching ratios SO PHYSICS LETTERS B LA English DT Article ID DECAYS AB Using a large sample of charm semileptonic decays collected by the FOCUS photoproduction experiment at Fermilab, we present new measurements of two semileptonic branching ratios. We obtain values of Gamma(D+-->(K) over bar*(0)mu(+)nu)/Gamma(D+ --> (K) over bar (-)pi(+)pi(+)) = 0.602 +/- 0.010(stat) +/- 0.021(sys) and Gamma(D-s(+) --> phimu(+)nu)/Gamma(D-s(+) --> phipi(+)) = 0.54 +/- 0.033(stat) +/- 0.048(sys). Our D+ --> (K) over bar*(0)mu(+)nu result includes the effects of the s-wave interference discussed in Phys. Lett. B 535 (2002) 43. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Calif Davis, Davis, CA 95616 USA. Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil. CINVESTAV, Mexico City 07000, DF, Mexico. Univ Colorado, Boulder, CO 80309 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Illinois, Urbana, IL 61801 USA. Indiana Univ, Bloomington, IN 47405 USA. Korea Univ, Seoul 136701, South Korea. Kyungpook Natl Univ, Taegu 702701, South Korea. Ist Nazl Fis Nucl, I-20133 Milan, Italy. Univ Milan, Milan, Italy. Univ N Carolina, Asheville, NC 28804 USA. Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy. Ist Nazl Fis Nucl, I-27100 Pavia, Italy. Univ Puerto Rico, Mayaguez, PR 00681 USA. Univ S Carolina, Columbia, SC 29208 USA. Univ Tennessee, Knoxville, TN 37996 USA. Vanderbilt Univ, Nashville, TN 37235 USA. Univ Wisconsin, Madison, WI 53706 USA. RP Link, JM (reprint author), Univ Calif Davis, Davis, CA 95616 USA. RI Bonomi, Germano/G-4236-2010; Kwak, Jungwon/K-8338-2012; Anjos, Joao/C-8335-2013; Link, Jonathan/L-2560-2013; Benussi, Luigi/O-9684-2014; Gobel Burlamaqui de Mello, Carla /H-4721-2016 OI Bonomi, Germano/0000-0003-1618-9648; Link, Jonathan/0000-0002-1514-0650; Benussi, Luigi/0000-0002-2363-8889; Gobel Burlamaqui de Mello, Carla /0000-0003-0523-495X NR 17 TC 8 Z9 8 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD AUG 15 PY 2002 VL 541 IS 3-4 BP 243 EP 250 AR PII S0370-2693(02)02272-4 DI 10.1016/S0370-2693(02)02272-4 PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 585ZV UT WOS:000177558200006 ER PT J AU Hundley, MF Adams, PN Mattes, BR AF Hundley, MF Adams, PN Mattes, BR TI The influence of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPSA) additive concentration and stretch orientation on electronic transport in AMPSA-modified polyaniline films prepared from an acid solvent mixture SO SYNTHETIC METALS LA English DT Article DE conducting polymers; polyaniline and derivatives; AMPSA; electronic transport ID MOLECULAR-WEIGHT POLYANILINE; METAL-INSULATOR-TRANSITION; CONDUCTING POLYMERS; THERMOELECTRIC-POWER; DOPED POLYANILINE; CHARGE-TRANSPORT; FIBERS; TEMPERATURES; POLYPYRROLE; ANILINE AB We examine the effects of 2 acrylamido 2 methyl 1 propanesulfomc acid (AMPSA) additive concentration molecular weight and specimen elongation on the temperature dependent electronic transport properties of polyaniline films prepared with AMPSA in the presence of a great excess of a formic and dichloroacetic acid (DCAA) solvent mixture The AMPSA additive dependent resistivity and thermopower are reported for free standing PANI AMPSA(x) (M-w = 200 000 g mol(-1)) films (x = 01-05) in the temperature range from 2 to 325 K The low temperature data indicate that these samples are just on the insulating side of a disorder induced metal-insulator (M-I) transition (dpl dT < 0) and that thermal motion at elevated temperatures is sufficient to produce a metallic state (dp/dT > 0) at room temperature Transport occurs via variable range hopping (VRH) for temperatures below 200 K with hopping parameters that are a strong function of x increased AMPSA concentration decreases the resistivity and moves the samples towards the M-I phase boundary There is a minimum in the resistivity for all samples at a temperature To that is also doping dependent Stretch orientation of PANI AMPSA(0.5) films prepared with higher molecular weight PANI (Mw = 300 000 g mol(-1)) along the resistivity measurement direction decreases the room temperature resistivity at the expense of a more insulating low temperature state The T-m values of both stretched and unstretched PANI AMPSA(0.5) films are pushed below 200 K which reflects reduced disorder in film processed with higher molecular weight polyaniline These results reflect an evolution in the underlying inhomogeneous mesoscopic disorder present in doped conducting polymers (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Grp MST 10, Los Alamos, NM 87545 USA. Santa Fe Sci & Technol Inc, Santa Fe, NM 87505 USA. RP Hundley, MF (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Grp MST 10, POB 1663,MS K764, Los Alamos, NM 87545 USA. NR 38 TC 15 Z9 15 U1 0 U2 7 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0379-6779 J9 SYNTHETIC MET JI Synth. Met. PD AUG 15 PY 2002 VL 129 IS 3 BP 291 EP 297 AR PII S0379-6779(02)00089-9 DI 10.1016/S0379-6779(02)00089-9 PG 7 WC Materials Science, Multidisciplinary; Physics, Condensed Matter; Polymer Science SC Materials Science; Physics; Polymer Science GA 589AN UT WOS:000177735500012 ER PT J AU Gee, GW Ward, AL Caldwell, TG Ritter, JC AF Gee, GW Ward, AL Caldwell, TG Ritter, JC TI A vadose zone water fluxmeter with divergence control SO WATER RESOURCES RESEARCH LA English DT Article DE drainage; wick sampler; tipping bucket; flow simulations ID LABORATORY EVALUATION; SOIL; SAMPLERS; MODEL; FLUX AB [1] Unsaturated water flux densities are needed to quantify water and contaminant transfer within the vadose zone. However, water flux densities are seldom measured directly and often are predicted with uncertainties of an order or magnitude or more. A water fluxmeter was designed, constructed, and tested to directly measure drainage fluxes in field soils. The fluxmeter was designed to minimize divergence. It concentrates flow into a narrow sensing region filled with a fiberglass wick. The wick applies suction, proportional to its length, and passively drains the meter. The meter can be installed in an augured borehole at almost any depth below the root zone. Water flux through the meter is measured with a self-calibrating tipping bucket, with a sensitivity of similar to4 mL tip(-1). For our meter this is equivalent to detection limit of similar to0.1 mm. Passive-wick devices previously have not properly corrected for flow divergence. Laboratory measurements supported predictions of a two-dimensional (2-D) numerical model, which showed that control of the collector height H and knowledge of soil hydraulic properties are required for improving divergence control, particularly at fluxes below 1000 mm yr(-1). The water fluxmeter is simple in concept, is inexpensive, and has the capability of providing continuous and reliable monitoring of unsaturated water fluxes ranging from less than 1 mm yr(-1) to more than 1000 mm yr(-1). C1 Pacific NW Natl Lab, Environm Technol Div, Hydrol Grp, Richland, WA 99353 USA. RP Gee, GW (reprint author), Pacific NW Natl Lab, Environm Technol Div, Hydrol Grp, Richland, WA 99353 USA. RI Caldwell, Todd/H-5129-2011 OI Caldwell, Todd/0000-0003-4068-0648 NR 33 TC 27 Z9 27 U1 1 U2 6 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 AUG 15 PY 2002 VL 38 IS 8 AR 1141 DI 10.1029/2001WR000816 PG 7 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 611EG UT WOS:000179003000005 ER PT J AU Demange, V Machizaud, F Dubois, JM Anderegg, JW Thiel, PA Sordelet, DJ AF Demange, V Machizaud, F Dubois, JM Anderegg, JW Thiel, PA Sordelet, DJ TI New approximants in the Al-Cr-Fe system and their oxidation resistance SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article; Proceedings Paper CT Quasicrystals 2001 Conference CY SEP 24-28, 2001 CL SENDAI, JAPAN DE quasicrystals; transmission electron microscopy; photoelectron spectroscopies ID DECAGONAL QUASI-CRYSTAL; SURFACE OXIDATION; PHASES; ALLOYS; AL65CU20CR15 AB Two new orthorhombic approximants of the decagonal phase as well as a gamma-brass type phase are pointed out in the Al-Cr-Fe system. Analysis of diffraction data shows that they are isotypic with compounds already known in the Al-Cu-Fe-Cr and Al-Cr alloys, respectively. Resistance to oxidation in water as well as at high temperature is significantly enhanced thanks to the addition of Cr. (C) 2002 Published by Elsevier Science B.V. C1 Ecole Mines, LSG2M, CIM, UMR 7584 CNRS,INPL,UHP, F-54042 Nancy, France. ISU, Dept Chem, Ames, IA 50011 USA. Ames Lab, Dept Chem, Ames, IA 50011 USA. ISU, Dept Mat Sci, Ames, IA 50011 USA. Ames Lab, Met Dev, Ames, IA 50011 USA. RP Demange, V (reprint author), Ecole Mines, LSG2M, CIM, UMR 7584 CNRS,INPL,UHP, Parc Saurupt, F-54042 Nancy, France. NR 20 TC 16 Z9 16 U1 1 U2 8 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 AUG 14 PY 2002 VL 342 IS 1-2 BP 24 EP 29 AR PII S0925-8388(02)00118-4 DI 10.1016/S0925-8388(02)00118-4 PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 592HT UT WOS:000177932400006 ER PT J AU Kramer, MJ Hong, ST Canfield, PC Fisher, IR Corbett, JD Zhu, Y Goldman, AI AF Kramer, MJ Hong, ST Canfield, PC Fisher, IR Corbett, JD Zhu, Y Goldman, AI TI The local atomic structure of R-Mg-Zn (R=Y, Gd, Dy and Tb) SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article; Proceedings Paper CT Quasicrystals 2001 Conference CY SEP 24-28, 2001 CL SENDAI, JAPAN DE face-centered icosahedral; atomic structure; high resolution transmission electron microscopy; atomic pair distribution function ID ICOSAHEDRAL QUASI-CRYSTAL; RARE-EARTH ALLOYS; ELECTRON-MICROSCOPY; SPIN CORRELATIONS AB The rare earth element in the R-Mg-Zn system provides a unique probe of the atomic structure of a face-centered icosahedral (fci) quasicrystal (qc). Unlike many of the other ternary and higher component qc systems, the compound around R8Mg42Zn50 allows for the substitution of one of its main components (R = Y, Er, Ho, Dy and Th) without any appreciable change in its qc structure (space group or quasi-unit cell dimension). The large atomic number difference between Y and the heavy rare earth elements affords large differences in the scattering cross-sections for electrons, neutrons and X-rays. Using high quality flux grown single grains with resolution limited diffraction peaks, the local atomic structure was probed with a variety of complimentary techniques. The differences in the pair distribution function (PDF) due to loss of the anti-ferromagnetic ordering of the Th between 4.2 and 30 K was used to probe the R site. High resolution TEM and single grain XRD have been used to determine the cluster structures. Results of this work suggest that there are local clusters in this fci compound consisting of five concentric polyhedra with 124 atoms: an icosahedron, dodecahedron, icosahedron, bucky-ball and a dodecahedron, similar to previous work. However, the HRTEM results indicate that the local structure consists only of these five shells which may edge share with the next cluster. Based on this atomic arrangement, the PDF results are consistent with R atoms partially occupying the vertices of the outer icosahedron and dodecahedron. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Iowa State Univ, Ames Lab, Dept Mat Sci & Engn, Ames, IA 50011 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. RP Kramer, MJ (reprint author), Iowa State Univ, Ames Lab, Dept Mat Sci & Engn, 37 Wilhelm Hall, Ames, IA 50011 USA. RI Canfield, Paul/H-2698-2014 NR 14 TC 12 Z9 13 U1 1 U2 6 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 AUG 14 PY 2002 VL 342 IS 1-2 BP 82 EP 86 AR PII S0925-8388(02)00146-9 DI 10.1016/S0925-8388(02)00146-9 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 592HT UT WOS:000177932400018 ER PT J AU Yang, WG Feuerbacher, M Urban, K AF Yang, WG Feuerbacher, M Urban, K TI Cluster structure and low-energy planes in icosahedral Al-Pd-Mn quasicrystals SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article; Proceedings Paper CT Quasicrystals 2001 Conference CY SEP 24-28, 2001 CL SENDAI, JAPAN DE clusters; quasicrystals; mlicrostructure ID ELECTRON DIFFRACTION; SURFACE AB The structure of icosahedral Al-Pd-Mn phase has been examined with special emphasis on the arrangement of clusters at different hierarchical levels. A box of atomic positions calculated according to Boudard's model has been searched for clusters and superclusters (clusters of clusters on a higher inflation level). The arrangements of clusters and superclusters are very similar to those of the atomic positions, but scaled by inflation factors Of tau(3) and tau(6), respectively. Considering two-dimensional planes cutting through a model Al-Pd-Mn icosahedral quasicrystal, we discuss the energy of such planes, defining that the intersection area of a plane with the clusters determines its energy cost. Planes perpendicular to fivefold, twofold and pseudo twofold directions are investigated. The results show that the positions of the local energy minima of fivefold and twofold planes follows a Fibonacci sequence, whereas an almost constant energy cost was found for pseudo twofold planes. We found that the fivefold and twofold cut planes possess a chemical order showing a limited number of compositions, which we have termed H-, M-, L- and Hl-, H2-, Ll-, L2-plancs, respectively. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany. RP Yang, WG (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. EM yangw@ornln.gov RI Yang, Wenge/H-2740-2012; Feuerbacher, Michael/K-3768-2013 OI Feuerbacher, Michael/0000-0003-2882-4960 NR 13 TC 5 Z9 5 U1 0 U2 2 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 AUG 14 PY 2002 VL 342 IS 1-2 BP 164 EP 168 AR PII S0925-8388(02)00165-2 DI 10.1016/S0925-8388(02)00165-2 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 592HT UT WOS:000177932400036 ER PT J AU Rotenberg, E Theis, W Horn, K AF Rotenberg, E Theis, W Horn, K TI Model simulations of momentum-resolved photoemission from quasicrystals SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article; Proceedings Paper CT Quasicrystals 2001 Conference CY SEP 24-28, 2001 CL SENDAI, JAPAN DE quasicrystal; electronic properties; valence band; angle resolved photoemission ID QUASI-CRYSTALS AB Recent experiments have demonstrated that valence band dispersion may be observed on suitably prepared surfaces of quasicrystals. We present model calculations for optical transitions for one-dimensional aperiodic lattices, and show that these calculations are consistent with the experimental photoemission results. We estimate the total number of bands which can be observed in such an experiment is reduced from infinite, to just two to three bands in a typical experiment. (C) 2002 Elsevier Science BY All rights reserved. C1 EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Free Univ Berlin, Inst Phys Expt, D-14195 Berlin, Germany. Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany. RP Rotenberg, E (reprint author), EO Lawrence Berkeley Natl Lab, MS 6-2100, Berkeley, CA 94720 USA. RI Rotenberg, Eli/B-3700-2009 OI Rotenberg, Eli/0000-0002-3979-8844 NR 11 TC 12 Z9 12 U1 1 U2 3 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 AUG 14 PY 2002 VL 342 IS 1-2 BP 348 EP 351 AR PII S0925-8388(02)00251-7 DI 10.1016/S0925-8388(02)00251-7 PG 4 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 592HT UT WOS:000177932400075 ER PT J AU Bilusic, A Budrovic, Z Smontara, A Dolinsek, J Canfield, PC Fisher, IR AF Bilusic, A Budrovic, Z Smontara, A Dolinsek, J Canfield, PC Fisher, IR TI Transport properties of icosahedral quasicrystal Al72Pd19.5Mn8.5 SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article; Proceedings Paper CT Quasicrystals 2001 Conference CY SEP 24-28, 2001 CL SENDAI, JAPAN DE transport properties; icosahedral quasicrystal; Al72Pd19.5Mn8.5 ID TEMPERATURE THERMAL-CONDUCTIVITY; QUASI-CRYSTALS; TUNNELING STATES; ALPDMN; PHASE; RESISTIVITY; VIBRATIONS; CLUSTERS; PD AB We present measurements of the thermoelectrical properties of polygrain icosahedral quasicrystal Al72Pd19.5Mn8.5 in the temperature range 10-300 K. Electrical resistivity has a relatively low room temperature value, rho(K.T) = 1.2 mOmega cm, by lowering the temperature it shows an increase with a maximum value at 120 K. Thermoelectric power is positive in the whole temperature ranges with a quite high room temperature value, S-R.T. = 70 muV/K. Thermal conductivity shows a maximum at 30 K, and a broad minimum around 125 K. The room temperature value is K-R.T. = 3.4 W/mK. The appearance of the maximum in thermal conductivity at 30 K comes mainly from structural scattering, while at temperatures above 120 K from the contribution of the localized phonon state. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Zagreb, Inst Phys, HR-10001 Zagreb, Croatia. Univ Ljubljana, Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Smontara, A (reprint author), Univ Zagreb, Inst Phys, POB 304, HR-10001 Zagreb, Croatia. RI Smontara, Ana/E-2365-2011; Bilusic, Ante/H-2101-2012; Canfield, Paul/H-2698-2014 NR 23 TC 18 Z9 20 U1 0 U2 3 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 AUG 14 PY 2002 VL 342 IS 1-2 BP 413 EP 415 AR PII S0925-8388(02)00267-0 DI 10.1016/S0925-8388(02)00267-0 PG 3 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 592HT UT WOS:000177932400091 ER PT J AU Bastasz, R AF Bastasz, R TI Low-energy ion scattering measurements of quasicrystal surfaces SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article; Proceedings Paper CT Quasicrystals 2001 Conference CY SEP 24-28, 2001 CL SENDAI, JAPAN DE ion scattering spectroscopy; quasicrystals; surface crystallography; Al-Pd-Mn; surface structure; LEIS; ISS; aperiodic; ion beam analysis; shadow cones; surface analysis ID AL-PD-MN; ELECTRON DIFFRACTION; QUASI-CRYSTAL AB The technique of low-energy ion scattering spectroscopy is useful for determining the composition and structure of ordered surfaces. It can identify atoms in the topmost layer of a solid and provide real-space data about surface atom arrangement. This technique and its application to the study of quasicrystal surfaces is described using examples of the types of information that can be obtained from the ternary icosahedral alloy Al-Pd-Mn. These include surface layer and subsurface layer compositions, surface layer symmetry, interlayer spacings, and neighboring atom distances. In the case of annealed quasicrystalline Al-Pd-Mn, the surface is found to be composed primarily of Al atoms, a Pd-rich layer appears to exist just below the Al layer, and the top layers are deficient in Mn. The Al atoms at the surface exhibit local 5-fold symmetry. (C) 2002 Published by Elsevier Science B.V. C1 Sandia Natl Labs, Livermore, CA 94551 USA. RP Bastasz, R (reprint author), Sandia Natl Labs, POB 969, Livermore, CA 94551 USA. NR 14 TC 5 Z9 5 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 AUG 14 PY 2002 VL 342 IS 1-2 BP 427 EP 431 AR PII S0925-8388(02)00269-4 DI 10.1016/S0925-8388(02)00269-4 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 592HT UT WOS:000177932400094 ER PT J AU McGrath, R Ledieu, J Cox, EJ Haq, S Diehl, RD Jenks, CJ Fisher, I Ross, AR Lograsso, TA AF McGrath, R Ledieu, J Cox, EJ Haq, S Diehl, RD Jenks, CJ Fisher, I Ross, AR Lograsso, TA TI Quasicrystal surfaces: potential as templates for molecular adsorption SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article; Proceedings Paper CT Quasicrystals 2001 Conference CY SEP 24-28, 2001 CL SENDAI, JAPAN DE quasicrystal surfaces; molecular adsorption; FTIR ID CRYSTALLINE SURFACE; QUASI-CRYSTALS; CO AB We report on investigations of the potential for using quasicrystal surfaces as templates for molecular adsorption. The quasicrystalline surfaces of the i-Al-Pd-Mn and the d-Al-Ni-Co quasicrystals have been dosed with various molecules and the surface reactivity characterised by Fourier transform infrared spectroscopy (FTIR). The reflected signal intensities obtained are much weaker than those obtained from other crystals such as metals. Although both quasicrystals are Al-based their surface reactivities are seen to differ. For the Al-Pd-Mn surface, NO and HCOOH both dissociate at the surface and CO does not adsorb. CD4O adsorption leads to multilayers as in other crystals. C,H, molecules stick at low coverages and at low temperatures whilst not affecting the LEED pattern. For the Al-Ni-Co surface, CO molecules stick via activated adsorption to atop sites with vibrational frequencies very similar to CO adsorption on Ni. HCOOH forms multilayers at low temperatures which is reduced to a monolayer upon heating to 173 K; changes in the symmetry of the bonding are observed, which is also seen for HCOOH on Ni surfaces. NO and CD4O showed no characteristic spectra, which may be due to dissociation or a very low sticking probability. We summarise these observations and draw some conclusions as to the most favourable route for molecular overlayer formation. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England. Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP McGrath, R (reprint author), Univ Liverpool, Surface Sci Res Ctr, POB 147, Liverpool L69 3BX, Merseyside, England. RI McGrath, Ronan/A-1568-2009; Ledieu, Julian/F-1430-2010 OI McGrath, Ronan/0000-0002-9880-5741; NR 17 TC 32 Z9 32 U1 1 U2 5 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 AUG 14 PY 2002 VL 342 IS 1-2 BP 432 EP 436 AR PII S0925-8388(02)00270-0 DI 10.1016/S0925-8388(02)00270-0 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 592HT UT WOS:000177932400095 ER PT J AU Thiel, PA AF Thiel, PA TI Concluding remarks to Quasicrystals 2001 SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Editorial Material C1 Iowa State Univ, Dept Chem, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Thiel, PA (reprint author), Iowa State Univ, Dept Chem, Ames, IA 50011 USA. NR 0 TC 1 Z9 1 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 AUG 14 PY 2002 VL 342 IS 1-2 BP 477 EP 479 AR PII S0925-8388(02)00854-X DI 10.1016/S0925-8388(02)00854-X PG 3 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 592HT UT WOS:000177932400105 ER PT J AU Fournier, KB Faenov, AY Pikuz, TA Skobelev, IY Flora, F Bollanti, S Di Lazzaro, P Murra, D Grilli, A Reale, A Reale, L Tomassetti, G Ritucci, A Bellucci, I Martellucci, S Petrocelli, G AF Fournier, KB Faenov, AY Pikuz, TA Skobelev, IY Flora, F Bollanti, S Di Lazzaro, P Murra, D Grilli, A Reale, A Reale, L Tomassetti, G Ritucci, A Bellucci, I Martellucci, S Petrocelli, G TI Observations of high-n transitions in the spectra of near-neon-like copper ions from laser-produced plasmas SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID X-RAY OBSERVATIONS; STATE IONIZATION-ENERGY; 2L-NL' TRANSITIONS; COMPLEX SPECTRA; TOKAMAK PLASMAS; CROSS-SECTIONS; CHARGE STATES; FE-XVII; IRON; SPECTROSCOPY AB Spectra in the 7 50-8 70 Angstrom range from highly charged copper ions are analysed and line identifications are made for the Na Ne F and 0 like charge states. The spectra are recorded with a spherically bent crystal spectrometer using either a mica or quartz crystal for moderate (lambda/Deltalambda = 3000) and high (lambda/Deltalambda = 8000) energy resolution respectively. The plasmas from which the spectra are emitted are formed with either a Nd glass (15 ns pulse) or a XeCl (12 ns pulse) laser. Systematic variations in the observed spectra with pulse energy are studied. Using different laser energies and defocusing of the laser to reduce the intensity we create plasmas with different ionization state distributions which allows us to deconvolve blended lines from different copper ions. Line identifications are made based on relativistic atomic structure calculations that account for configuration interaction in level energies and transition rates. We use full kinetics simulations of ion emissivities not just calculations of theoretical transition energies to identify the strong and weak lines in crowded spectral regions. We identify 2p-nl transitions for Ne like Cu19+ for 4 less than or equal to n less than or equal to 8 and 2s-np transitions for 4 less than or equal to n less than or equal to 6 We offer the first identification of high n (n less than or equal to 8) Na like satellites to Ne like Rydberg resonance lines. The first and second ionization energies for Cu19+ are found at 1689 02 and 1709 16 eV respectively based on our observations. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. VNIIFTRI, Multicharged Ions Spectra Data Ctr, Moscow 141570, Russia. ENEA, Dipartimento Innovazione Settore Fis Applicata, I-00044 Rome, Italy. INFN Frascati, I-00044 Rome, Italy. Univ Aquila, Dipartimento Fis, I-67010 Coppito, Italy. Univ Aquila, Ist Nazl Fis Nucl, INFM, I-67010 Coppito, Italy. Univ Roma Tor Vergata, INFM, Dipartimento Sci & Tecnol Fis & Energet, I-00133 Rome, Italy. RP Fournier, KB (reprint author), Lawrence Livermore Natl Lab, POB 808,L 41, Livermore, CA 94550 USA. NR 36 TC 10 Z9 10 U1 1 U2 3 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 AUG 14 PY 2002 VL 35 IS 15 BP 3347 EP 3364 AR PII S09534075(02)36084X DI 10.1088/0953-4075/35/15/309 PG 18 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 589AP UT WOS:000177735600016 ER PT J AU Muino, RD Rolles, D de Abajo, FJG Fadley, CS Van Hove, MA AF Muino, RD Rolles, D de Abajo, FJG Fadley, CS Van Hove, MA TI Angular distributions of electrons photoemitted from core levels of oriented diatomic molecules multiple scattering theory in non-spherical potentials SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID K-SHELL PHOTOIONIZATION; SHAPE RESONANCE; N-2; PHOTOELECTRONS; DIFFRACTION AB We use multiple scattering in non spherical potentials (MSNSP) to calculate the angular distributions of electrons photoemitted from the 1s shells of CO and N-2 gas phase molecules with fixed in space orientations. For low photoelectron kinetic energies (E < 50 eV) as appropriate to certain shape resonances the electron scattering must be represented by non spherical scattering potentials which are naturally included in our formalism. Our calculations accurately reproduce the experimental angular patterns recently measured by several groups including those at the shape resonance energies. The MSNSP theory is thus an efficient method to calculate the scattering states of low energy electrons in small low symmetry systems. C1 DIPC, San Sebastian 20018, Spain. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany. EHU, UPV, CSIC, Ctr Mixto, San Sebastian 20080, Spain. Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Muino, RD (reprint author), DIPC, P Manuel Lardizabal 4, San Sebastian 20018, Spain. RI Rolles, Daniel/C-2384-2008; Van Hove, Michel/A-9862-2008; Diez Muino, Ricardo/C-9203-2009; Garcia de Abajo, Javier/A-6095-2009; CSIC-UPV/EHU, CFM/F-4867-2012; DONOSTIA INTERNATIONAL PHYSICS CTR., DIPC/C-3171-2014 OI Van Hove, Michel/0000-0002-8898-6921; Diez Muino, Ricardo/0000-0001-8593-0327; Garcia de Abajo, Javier/0000-0002-4970-4565; NR 24 TC 13 Z9 13 U1 1 U2 2 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 AUG 14 PY 2002 VL 35 IS 15 BP L359 EP L365 AR PII S09534075(02)385833 DI 10.1088/0953-4075/35/15/104 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 589AP UT WOS:000177735600004 ER PT J AU Mirica, LM Vance, M Rudd, DJ Hedman, B Hodgson, KO Solomon, EI Stack, TDP AF Mirica, LM Vance, M Rudd, DJ Hedman, B Hodgson, KO Solomon, EI Stack, TDP TI A stabilized mu-eta(2):eta(2) peroxodicopper(II) complex with a secondary diamine ligand and its tyrosinase-like reactivity SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID SIDE-ON PEROXO; DIOXYGEN BINDING; MODEL; CORE; INTERMEDIATE; OXYGENATION; HEMOCYANIN; REDUCTION; OXIDASES; ARENE C1 Stanford Univ, Dept Chem, Stanford, CA 94305 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. RP Stack, TDP (reprint author), Stanford Univ, Dept Chem, Stanford, CA 94305 USA. FU NCRR NIH HHS [RR01209]; NIDDK NIH HHS [DK31450]; NIGMS NIH HHS [GM50730] NR 28 TC 72 Z9 74 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 14 PY 2002 VL 124 IS 32 BP 9332 EP 9333 DI 10.1021/ja026905p PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA 582NT UT WOS:000177358600005 PM 12167002 ER PT J AU Wang, LC Jang, HY Roh, Y Lynch, V Schultz, AJ Wang, XP Krische, MJ AF Wang, LC Jang, HY Roh, Y Lynch, V Schultz, AJ Wang, XP Krische, MJ TI Diastereoselective cycloreductions and cycloadditions catalyzed by co(dpm)(2)-silane (dpm=2,2,6,6-tetramethylheptane-3,5-dionate): mechanism and partitioning of hydrometallative versus anion radical pathways SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID ASYMMETRIC ALDOL REACTION; QUATERNARY AMMONIUM SALT; SIGMA-BOND METATHESIS; REDUCTIVE CYCLIZATION; MICHAEL ADDITIONS; ALPHA,BETA-UNSATURATED KETONES; CONJUGATE REDUCTION; TITANIUM CATALYST; TRANSITION-METAL; COMPLEXES AB In the presence of phenylsilane and 5 mol % cobalt(II) bis(2,2,6,6-tetramethylheptane-3,5-dionate), aryl-substituted monoenone monoaldehydes and bis(enones) undergo reductive cyclization to afford synaldol and anti-Michael products, respectively. For both aldol and Michael cycloreductions, five- and six-membered ring formation occurs in good yield with high levels of diastereoselectivity. Cycloreduction of monoenone monoaldehyde is in the presence of d(3)-phenylsilane reveals incorporation of a single deuterium at the enone beta-position as an equimolar mixture of epimers, inferring rapid isomerization of the kinetically formed cobalt enolate prior to cyclization. The deuterated product was characterized by single-crystal neutron diffraction analysis. For bis(enone) substrates, modulation of the silane source enables partitioning of the competitive Michael cycloreduction and [2 + 2] cycloaddition manifolds. A study of para-substituted acetophenone-derived bis(enones) reveals that substrate electronic features also direct partitioning of cycloreduction and cycloaddition manifolds. Further mechanistic insight is obtained through examination of the effects of enone geometry on product stereochemistry and electrochemical studies involving cathodic reduction of bis(enone) substrates. The collective experiments reveal competitive enone reduction pathways. Enone hydrometalation produces metallo-enolates en route to aldol and Michael cycloreduction products, that is, products derived from coupling at the a-position of the enone. Electron-transfer-mediated enone reduction produces metallo-oxy-pi-allyls en route to [2 + 2] cycloadducts and, under Ni catalysis, homoaldol cycloreduction products, that is, products derived from coupling at the beta-position of the enone. The convergent outcome of the metal-catalyzed and electrochemically induced transformations suggests the proposed oxy-pi-allyl intermediates embody character consistent with the mesomeric metal-complexed anion radicals. C1 Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA. Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA. RP Krische, MJ (reprint author), Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA. RI Wang, Xiaoping/E-8050-2012 OI Wang, Xiaoping/0000-0001-7143-8112 FU NIGMS NIH HHS [R01 GM65149-01] NR 77 TC 98 Z9 100 U1 3 U2 25 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 14 PY 2002 VL 124 IS 32 BP 9448 EP 9453 DI 10.1021/ja020223k PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA 582NT UT WOS:000177358600042 PM 12167039 ER PT J AU Perez-Salas, U Briber, RM Hamilton, WA Rafailovich, MH Sokolov, J Nasser, L AF Perez-Salas, U Briber, RM Hamilton, WA Rafailovich, MH Sokolov, J Nasser, L TI Polystyrene network-network interdiffusion SO MACROMOLECULES LA English DT Article ID MUTUAL DIFFUSION; POLYMER-CHAINS; INTERFACES; SCATTERING; REPTATION; SWOLLEN; BLENDS; BRUSH; MELT AB Neutron reflectivity was used to study the interdiffusion of thin film bilayers of cross-linked deuterated and protonated polystyrene. The films were spun-cast and cross-linked by gamma radiation. Interfacial broadening was studied as a function of annealing time for different cross-link densities. The samples were annealed in a vacuum at 150 degreesC, and neutron reflectivity measurements were performed in air at room temperature. The interface was observed to broaden rapidly at short annealing times and then plateau to an equilibrium value. The interfacial broadening was modeled using a solution to the Fokker-Planck equation with a parabolic external potential to obtain the equilibrium interfacial width and effective diffusion coeffcient as a function of the average network mesh size, (N) over bar (c),. The interfacial width was found to scale as (N) over bar (0.47+/-0.1)(c). The effective diffusion coefficient was found to be independent of (N) over bar (c). C1 Univ Maryland, Chem Phys Program, College Pk, MD 20742 USA. Univ Maryland, Dept Mat & Nucl Engn, College Pk, MD 20742 USA. Oak Ridge Natl Lab, Neutron Scattering Grp, Oak Ridge, TN 37831 USA. SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA. Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA. RP Univ Maryland, Chem Phys Program, College Pk, MD 20742 USA. RI Briber, Robert/A-3588-2012 OI Briber, Robert/0000-0002-8358-5942 NR 34 TC 6 Z9 6 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 EI 1520-5835 J9 MACROMOLECULES JI Macromolecules PD AUG 13 PY 2002 VL 35 IS 17 BP 6638 EP 6644 DI 10.1021/ma010842y PG 7 WC Polymer Science SC Polymer Science GA 582UE UT WOS:000177368900022 ER PT J AU van Herpen, MMJW Li, SC Bisson, SE Harren, FJM AF van Herpen, MMJW Li, SC Bisson, SE Harren, FJM TI Photoacoustic trace gas detection of ethane using a continuously tunable, continuous-wave optical parametric oscillator based on periodically poled lithium niobate SO APPLIED PHYSICS LETTERS LA English DT Article ID ACETALDEHYDE; ETHYLENE AB A 1.2 W, continuous-wave, continuously-tunable, singly-resonant optical parametric oscillator (OPO) (idler tuning range 3.0-3.8 mum), pumped by a 10 W continuous-wave Nd:YAG laser, is used in combination with a photoacoustic cell for the detection of ethane. An intracavity solid-state etalon (thickness 400 mum) was used to stabilize the OPO cavity and could be used to mode-hop tune the idler wavelength over 10 cm(-1). The usefulness of the system was demonstrated by determining a detection limit for ethane down to 10 parts per trillion. The selectivity was achieved by making a 24 GHz wide pump laser scan over the ethane absorption line at 2996.9 cm(-1), after which a Lorentzian fit determined the total area of the absorption signal. Both area value and peak value proved to be linearly depending on the ethane concentration. (C) 2002 American Institute of Physics. C1 Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands. Dalian Univ Technol, Dept Appl Phys, Dalian, Peoples R China. Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. RP van Herpen, MMJW (reprint author), Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands. RI Harren, Frans/A-1729-2010 NR 14 TC 40 Z9 40 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 12 PY 2002 VL 81 IS 7 BP 1157 EP 1159 DI 10.1063/1.1500410 PG 3 WC Physics, Applied SC Physics GA 581GY UT WOS:000177284400001 ER PT J AU Keidar, M Monteiro, OR Anders, A Boyd, ID AF Keidar, M Monteiro, OR Anders, A Boyd, ID TI Magnetic field effect on the sheath thickness in plasma immersion ion implantation SO APPLIED PHYSICS LETTERS LA English DT Article ID HIGH-VOLTAGE SHEATH; SURFACE MODIFICATION; EVOLUTION; EXPANSION AB The sheath thickness in plasma immersion ion implantation has been investigated in the presence of a transverse magnetic field. It has been found that the steady-state sheath thickness increases with increasing magnetic field strength. This result is in line with a simplified model of the sheath in which the steady-state sheath thickness is determined by the plasma density and ion velocity at the sheath edge. These results suggest that a magnetic field may be used to control the high-voltage sheath in plasma immersion ion implantation. (C) 2002 American Institute of Physics. C1 Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Keidar, M (reprint author), Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA. RI Anders, Andre/B-8580-2009 OI Anders, Andre/0000-0002-5313-6505 NR 24 TC 38 Z9 40 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 12 PY 2002 VL 81 IS 7 BP 1183 EP 1185 DI 10.1063/1.1499516 PG 3 WC Physics, Applied SC Physics GA 581GY UT WOS:000177284400010 ER PT J AU Jellison, GE Griffiths, CO Holcomb, DE AF Jellison, GE Griffiths, CO Holcomb, DE TI Electric-field-induced birefringence in LiNbO3 measured by generalized transmission ellipsometry SO APPLIED PHYSICS LETTERS LA English DT Article ID CDZNTE RADIATION DETECTORS AB Transmission generalized ellipsometry has been used to measure electric-field-induced birefringence in LiNbO3. By stepping an imaging lens over the end of an optical fiber attached to the detector, images of the retardation, fast axis, diattenuation, and depolarization can be obtained with a resolution of similar to31 mum. It is shown that the retardation and the fast axis in z-cut LiNbO3 under bias is not constant throughout the material, but can vary as much as a factor of 2. Furthermore, this retardation is a function of the magnitude and duration of the applied voltage. (C) 2002 American Institute of Physics. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Hinds Instruments Inc, Hillsboro, OR 97124 USA. Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. RP Jellison, GE (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. OI Holcomb, David/0000-0001-8263-4661 NR 10 TC 11 Z9 11 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 12 PY 2002 VL 81 IS 7 BP 1222 EP 1224 DI 10.1063/1.1498497 PG 3 WC Physics, Applied SC Physics GA 581GY UT WOS:000177284400023 ER PT J AU Malko, AV Mikhailovsky, AA Petruska, MA Hollingsworth, JA Htoon, H Bawendi, MG Klimov, VI AF Malko, AV Mikhailovsky, AA Petruska, MA Hollingsworth, JA Htoon, H Bawendi, MG Klimov, VI TI From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids SO APPLIED PHYSICS LETTERS LA English DT Article ID THRESHOLD; CLUSTERS; LASERS; GAIN AB We study different emission regimes in close-packed films of chemically synthesized CdSe nanoparticles [nanocrystal quantum dots (NQDs)]. We observe that the NQD photoluminescence is dominated by excitons and biexcitons, respectively, before and after the threshold for stimulated emission. Furthermore, we demonstrate the regime of microring lasing into sharp, whispering-gallery modes using NQD solids incorporated into microcapillary tubes. This result indicates a feasibility of miniature, solid-state laser devices based on chemically synthesized NQDs. (C) 2002 American Institute of Physics. C1 Los Alamos Natl Lab, Div Chem, CPCS, Los Alamos, NM 87545 USA. RP Klimov, VI (reprint author), Los Alamos Natl Lab, Div Chem, CPCS, MS-J585, Los Alamos, NM 87545 USA. OI Htoon, Han/0000-0003-3696-2896 NR 15 TC 175 Z9 175 U1 6 U2 55 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 12 PY 2002 VL 81 IS 7 BP 1303 EP 1305 DI 10.1063/1.1497708 PG 3 WC Physics, Applied SC Physics GA 581GY UT WOS:000177284400050 ER PT J AU Corbeil, JL Lavrik, NV Rajic, S Datskos, PG AF Corbeil, JL Lavrik, NV Rajic, S Datskos, PG TI "Self-leveling" uncooled microcantilever thermal detector SO APPLIED PHYSICS LETTERS LA English DT Article ID PERFORMANCE; RADIATION; SENSORS; ARRAYS AB Bimaterial microcantilevers can be used as highly sensitive uncooled infrared (IR) detectors. Since the transduction efficiency of microcantilevers depends on their deflection, it is important to minimize cantilever deflections caused by factors other than IR radiation (e.g., intrinsic mechanical stresses and ambient temperature fluctuations). In this letter we report on a design of a microcantilever IR detector that is immune to ambient temperature changes and other sources of interfering mechanical stresses. We modeled and experimentally measured responses of such devices to IR radiation as well as to ambient temperature changes. Both modeling and experimental results indicate that the implemented innovative designs can combine excellent IR sensitivity with negligible sensitivity to the ambient temperature changes. (C) 2002 American Institute of Physics. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Tennessee, Knoxville, TN 37996 USA. RP Datskos, PG (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Lavrik, Nickolay/B-5268-2011 OI Lavrik, Nickolay/0000-0002-9543-5634 NR 16 TC 40 Z9 40 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 12 PY 2002 VL 81 IS 7 BP 1306 EP 1308 DI 10.1063/1.1498870 PG 3 WC Physics, Applied SC Physics GA 581GY UT WOS:000177284400051 ER PT J AU Cotton, FA Daniels, LM Liu, CY Murillo, CA Schultz, AJ Wang, XP AF Cotton, FA Daniels, LM Liu, CY Murillo, CA Schultz, AJ Wang, XP TI How to make a major shift in a redox potential: Ligand control of the oxidation state of dimolybdenum units SO INORGANIC CHEMISTRY LA English DT Article ID DISSOCIATIVE ELECTRON-TRANSFER; TRIPLE BOND; COMPLEXES; PHOSPHATE; NEUTRON; BASES; ION AB A compound reported earlier (Polyhedron 1989, 8, 2339) as ((Bu4N)-N-n)(2)H-21{Mo-2[Mo(CO)(4)(PhPO2)(2)](2)} has been reexamined. We find that the hydrogen atoms in this formula are not present. Therefore, the complex must be considered as having a central triply bonded Mo-2(6+) unit, instead of a quadruply bonded Mo-2(4+) unit. Our conclusion is based on a variety of experimental evidence, including X-ray crystal structures of four crystal forms, as well as the neutron crystal structure of one. This explains the relatively long Mo-Mo bond lengths found in the range 2.1874(7)-2.2225(7) Angstrom and the absence of a delta --> delta* transition in the visible spectrum. From electrochemistry we also find that the diphosphonate ligand has such an exceptional ability to stabilize higher oxidation states that even common solvents such as CH2Cl2 and C2H5OH readily oxidize the Mo-2(4+) unit that is introduced from the Mo-2(O2CCH3)(4) or [Mo-2(O2CCH3)(2)(NCCH3)(6)](BF4)(2) employed in the preparation. The only chemically reversible wave at E-1/2 = -1.54 V vs Ag/AgCl corresponds to the reduction process Mo-2(6+) --> Mo-2(5+). C1 Texas A&M Univ, Dept Chem, Mol Struct & Bonding Lab, College Stn, TX 77842 USA. Univ Costa Rica, Dept Chem, Ciudad Univ, San Jose, Costa Rica. Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA. RP Cotton, FA (reprint author), Texas A&M Univ, Dept Chem, Mol Struct & Bonding Lab, POB 30012, College Stn, TX 77842 USA. RI Wang, Xiaoping/E-8050-2012 OI Wang, Xiaoping/0000-0001-7143-8112 NR 27 TC 5 Z9 5 U1 0 U2 4 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 AUG 12 PY 2002 VL 41 IS 16 BP 4232 EP 4238 DI 10.1021/ic025632w PG 7 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 582RT UT WOS:000177365500027 PM 12160412 ER PT J AU Esbensen, H Bertsch, GF AF Esbensen, H Bertsch, GF TI Higher-order effects in the two-body breakup of F-17 SO NUCLEAR PHYSICS A LA English DT Article ID HALO NUCLEI; COULOMB DISSOCIATION; STOPPING POWER; GAMMA)B-8 REACTION; CHARGED-PARTICLES; B-8; ENERGIES; MEV/NUCLEON; BARRIER; BE-7(P AB The two-body breakup F-17 --> O-16 + p on Ni and Pb targets at 10-40 MeV/u is calculated by solving the time-dependent Schrodinger equation numerically. Both Coulomb and the nuclear potentials are important in these reactions, but the Coulomb contribution cannot be calculated reliably in first-order perturbation theory. The most dramatic feature is a dynamic polarization effect, which reduces the Coulomb dissociation probability compared to first-order perturbation theory. Over most of the energy range, the correction is proportional to Z(3), the cube of the target charge, and the relative importance is nearly inversely proportional to the beam energy. At the lowest energies in the range considered, higher-order effects (greater than or equal to Z(3)) become significant as well. At the impact parameters where nuclear induced breakup is dominant, the diffraction dissociation is reduced whereas stripping is enhanced compared to the eikonal approximation. Here too the deviations decrease inversely with beam energy over most of the range considered. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA. RP Esbensen, H (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 26 TC 27 Z9 27 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD AUG 12 PY 2002 VL 706 IS 3-4 BP 383 EP 399 AR PII S0375-9474(02)00869-2 DI 10.1016/S0375-9474(02)00869-2 PG 17 WC Physics, Nuclear SC Physics GA 575KE UT WOS:000176944800007 ER PT J AU Spaltro, CM Bauer, TS Blok, HP Botto, T Cisbani, E De Leo, R Dodge, GE Ent, R Frullani, S Garibaldi, F Glockle, W Golak, J Harakeh, MN Iodice, M Jans, E Kamada, H Kasdorp, WJ Kormanyos, C Lapikas, L Misiejuk, A Nagorny, SI Nooren, GJ Onderwater, CJG Perrino, R van Sambeek, M Skibinski, R Starink, R van der Steenhoven, G Tjon, J van Uden, MA Urciuoli, GM de Vries, H Witala, H Yeomans, M AF Spaltro, CM Bauer, TS Blok, HP Botto, T Cisbani, E De Leo, R Dodge, GE Ent, R Frullani, S Garibaldi, F Glockle, W Golak, J Harakeh, MN Iodice, M Jans, E Kamada, H Kasdorp, WJ Kormanyos, C Lapikas, L Misiejuk, A Nagorny, SI Nooren, GJ Onderwater, CJG Perrino, R van Sambeek, M Skibinski, R Starink, R van der Steenhoven, G Tjon, J van Uden, MA Urciuoli, GM de Vries, H Witala, H Yeomans, M TI The He-3(e, e ' d)p reaction in (q, omega)-constant kinematics SO NUCLEAR PHYSICS A LA English DT Article DE He-3(e,e ' d); E=370; 576 MeV; measured sigma(E, theta); missing momentum dependence; deduced structure functions; reaction mechanism features; three-body Fadeev calculations ID FINAL-STATE INTERACTIONS; MESON-EXCHANGE CURRENTS; FEW-NUCLEON SYSTEMS; ELECTRON-SCATTERING; MAGNETIC SPECTROMETER; OPTICAL-PROPERTIES; COVARIANT APPROACH; DEUTERON KNOCKOUT; FULL INCLUSION; NIKHEF-K AB The cross section for the He-3(e, c' d)p reaction has been measured as a function of the missing momentum p(m) in (q, omega)-constant kinematics at beam energies of 370 and 576 MeV for values of the three-momentum transfer q of 412, 504 and 604 MeV/c. The L(+ TT), T and LT structure functions have been separated for q = 412 and 504 MeV/c. The data are compared to three-body Faddeev calculations, including meson-exchange currents (MEC), and to calculations based on a covariant diagrammatic expansion. The influence of final-state interactions and meson-exchange currents is discussed. The p(m)-dependence of the data is reasonably well described by all calculations. However, the most advanced Faddeev calculations, which employ the AV 18 nucleon-nucleon interaction and include MEC, overestimate the measured cross sections, especially the longitudinal part, and at the larger values of q. The diagrammatic approach gives a fair description of the cross section, but under(over)estimates the longitudinal (transverse) structure function. (C) 2002 Elsevier Science B.V. All rights reserved. C1 NIKHEF, NL-1009 DB Amsterdam, Netherlands. Vrije Univ Amsterdam, NL-1081 HV Amsterdam, Netherlands. Univ Utrecht, NL-3508 TA Utrecht, Netherlands. Ist Nazl Fis Nucl, Sez Sanita, I-00161 Rome, Italy. Ist Nazl Fis Nucl, Sezione Lecce, I-73100 Lecce, Italy. Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany. Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland. Kyushu Inst Technol, Kitakyushu, Fukuoka 8048550, Japan. RP Lapikas, L (reprint author), NIKHEF, POB 41882, NL-1009 DB Amsterdam, Netherlands. EM louk@nikhef.nl RI Perrino, Roberto/B-4633-2010; Cisbani, Evaristo/C-9249-2011 OI Perrino, Roberto/0000-0002-5764-7337; Cisbani, Evaristo/0000-0002-6774-8473 NR 38 TC 8 Z9 8 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 EI 1873-1554 J9 NUCL PHYS A JI Nucl. Phys. A PD AUG 12 PY 2002 VL 706 IS 3-4 BP 403 EP 417 AR PII S0375-9474(02)00861-8 DI 10.1016/S0375-9474(02)00861-8 PG 15 WC Physics, Nuclear SC Physics GA 575KE UT WOS:000176944800008 ER PT J AU Abe, K Abe, K Abe, T Adachi, I Ahn, BS Aihara, H Akatsu, M Asano, Y Aso, T Aulchenko, V Aushev, T Bakich, AM Ban, Y Banas, E Bedny, I Behari, S Behera, PK Bondar, A Bozek, A Bracko, M Brodzicka, J Browder, TE Casey, BCK Chang, P Chao, Y Cheon, BG Chistov, R Choi, SK Choi, Y Danilov, M Dong, LY Dragic, J Drutskoy, A Eidelman, S Eiges, V Enari, Y Everton, CW Fang, F Fujii, H Fukunaga, C Fukushima, M Gabyshev, N Garmash, A Gershon, T Golob, B Gordon, A Guo, R Haba, J Hamasaki, H Hanagaki, K Handa, F Hara, K Hara, T Hastings, NC Hayashii, H Hazumi, M Heenan, EM Higuchi, I Higuchi, T Hojo, T Hokuue, T Hoshi, Y Hoshina, K Hou, SR Hou, WS Hsu, SC Huang, HC Igaki, T Igarashi, Y Iijima, T Ikeda, H Inami, K Ishikawa, A Ishino, H Itoh, R Iwamoto, M Iwasaki, H Iwasaki, Y Jackson, DJ Jalocha, P Jang, HK Kang, JH Kang, JS Kapusta, P Katayama, N Kawai, H Kawai, H Kawamura, N Kawasaki, T Kichimi, H Kim, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, SK Kim, TH Kinoshita, K Koishi, S Konishi, H Korpar, S Krizan, P Krokovny, P Kulasiri, R Kumar, S Kuzmin, A Kwon, YJ Lange, JS Leder, G Lee, SH Limosani, A Liventsev, D Lu, RS MacNaughton, J Majumder, G Mandl, F Marlow, D Matsuishi, T Matsumoto, S Matsumoto, T Mikami, Y Mitaroff, W Miyabayashi, K Miyabayashi, Y Miyake, H Miyata, H Moloney, GR Mori, S Mori, T Murakami, A Nagamine, T Nagasaka, Y Nakadaira, T Nakano, E Nakao, M Nam, JW Neichi, K Nishida, S Nitoh, O Noguchi, S Nozaki, T Ogawa, S Ohno, F Ohshima, T Okabe, T Okuno, S Olsen, SL Ostrowicz, W Ozaki, H Pakhlov, P Palka, H Park, CW Park, H Park, KS Peak, LS Perroud, JP Peters, M Piilonen, LE Prebys, E Rodriguez, JL Ronga, FJ Rozanska, M Rybicki, K Sagawa, H Saitoh, S Sakai, Y Sakamoto, H Satapathy, M Satpathy, A Schneider, O Schrenk, S Schwanda, C Semenov, S Senyo, K Sevior, ME Shibuya, H Shwartz, B Sidorov, V Singh, JB Stanic, S Sugi, A Sugiyama, A Sumisawa, K Sumiyoshi, T Suzuki, K Suzuki, S Suzuki, SY Swain, SK Tajima, H Takahashi, T Takasaki, F Takita, M Tamai, K Tamura, N Tanaka, J Tanaka, M Taylor, GN Teramoto, Y Tokuda, S Tomoto, M Tomura, T Tovey, SN Trabelsi, K Trischuk, W Tsuboyama, T Tsukamoto, T Uehara, S Ueno, K Unno, Y Uno, S Ushiroda, Y Varvell, KE Wang, CC Wang, CH Wang, JG Wang, MZ Watanabe, Y Won, E Yabsley, BD Yamada, Y Yamaga, M Yamaguchi, A Yamamoto, H Yamashita, Y Yamauchi, M Yashima, J Yeh, P Yokoyama, M Yoshida, K Yuan, Y Yusa, Y Zhang, CC Zhang, J Zheng, Y Zhilich, V Zontar, D AF Abe, K Abe, K Abe, T Adachi, I Ahn, BS Aihara, H Akatsu, M Asano, Y Aso, T Aulchenko, V Aushev, T Bakich, AM Ban, Y Banas, E Bedny, I Behari, S Behera, PK Bondar, A Bozek, A Bracko, M Brodzicka, J Browder, TE Casey, BCK Chang, P Chao, Y Cheon, BG Chistov, R Choi, SK Choi, Y Danilov, M Dong, LY Dragic, J Drutskoy, A Eidelman, S Eiges, V Enari, Y Everton, CW Fang, F Fujii, H Fukunaga, C Fukushima, M Gabyshev, N Garmash, A Gershon, T Golob, B Gordon, A Guo, R Haba, J Hamasaki, H Hanagaki, K Handa, F Hara, K Hara, T Hastings, NC Hayashii, H Hazumi, M Heenan, EM Higuchi, I Higuchi, T Hojo, T Hokuue, T Hoshi, Y Hoshina, K Hou, SR Hou, WS Hsu, SC Huang, HC Igaki, T Igarashi, Y Iijima, T Ikeda, H Inami, K Ishikawa, A Ishino, H Itoh, R Iwamoto, M Iwasaki, H Iwasaki, Y Jackson, DJ Jalocha, P Jang, HK Kang, JH Kang, JS Kapusta, P Katayama, N Kawai, H Kawai, H Kawamura, N Kawasaki, T Kichimi, H Kim, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, SK Kim, TH Kinoshita, K Koishi, S Konishi, H Korpar, S Krizan, P Krokovny, P Kulasiri, R Kumar, S Kuzmin, A Kwon, YJ Lange, JS Leder, G Lee, SH Limosani, A Liventsev, D Lu, RS MacNaughton, J Majumder, G Mandl, F Marlow, D Matsuishi, T Matsumoto, S Matsumoto, T Mikami, Y Mitaroff, W Miyabayashi, K Miyabayashi, Y Miyake, H Miyata, H Moloney, GR Mori, S Mori, T Murakami, A Nagamine, T Nagasaka, Y Nakadaira, T Nakano, E Nakao, M Nam, JW Neichi, K Nishida, S Nitoh, O Noguchi, S Nozaki, T Ogawa, S Ohno, F Ohshima, T Okabe, T Okuno, S Olsen, SL Ostrowicz, W Ozaki, H Pakhlov, P Palka, H Park, CW Park, H Park, KS Peak, LS Perroud, JP Peters, M Piilonen, LE Prebys, E Rodriguez, JL Ronga, FJ Rozanska, M Rybicki, K Sagawa, H Saitoh, S Sakai, Y Sakamoto, H Satapathy, M Satpathy, A Schneider, O Schrenk, S Schwanda, C Semenov, S Senyo, K Sevior, ME Shibuya, H Shwartz, B Sidorov, V Singh, JB Stanic, S Sugi, A Sugiyama, A Sumisawa, K Sumiyoshi, T Suzuki, K Suzuki, S Suzuki, SY Swain, SK Tajima, H Takahashi, T Takasaki, F Takita, M Tamai, K Tamura, N Tanaka, J Tanaka, M Taylor, GN Teramoto, Y Tokuda, S Tomoto, M Tomura, T Tovey, SN Trabelsi, K Trischuk, W Tsuboyama, T Tsukamoto, T Uehara, S Ueno, K Unno, Y Uno, S Ushiroda, Y Varvell, KE Wang, CC Wang, CH Wang, JG Wang, MZ Watanabe, Y Won, E Yabsley, BD Yamada, Y Yamaga, M Yamaguchi, A Yamamoto, H Yamashita, Y Yamauchi, M Yashima, J Yeh, P Yokoyama, M Yoshida, K Yuan, Y Yusa, Y Zhang, CC Zhang, J Zheng, Y Zhilich, V Zontar, D CA Belle Collaboration TI Study of CP-violating asymmetries in B(0)->pi(+)pi(-) decays SO PHYSICAL REVIEW LETTERS LA English DT Article ID B-DECAYS; MESON SYSTEM; B->PI-PI; QCD AB We present a measurement of CP-violating asymmetries in B(0)-->pi(+)pi(-) decays based on a 41.8 fb(-1) data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We fully reconstruct one neutral B meson as a B(0)-->pi(+)pi(-) CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we obtain the CP-violating asymmetry parameters S(pipi)=-1.21(-0.27)(+0.38)(stat)(-0.13)(+0.16)(syst) and A(pipi)=+0.94(-0.31)(+0.25)(stat)+/-0.09(syst). C1 KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan. Aomori Univ, Aomori, Japan. Budker Inst Nucl Phys, Novosibirsk 630090, Russia. Chiba Univ, Chiba, Japan. Chuo Univ, Tokyo 112, Japan. Univ Cincinnati, Cincinnati, OH USA. Univ Frankfurt, D-6000 Frankfurt, Germany. Gyeongsang Natl Univ, Chinju, South Korea. Univ Hawaii, Honolulu, HI 96822 USA. Hiroshima Inst Technol, Hiroshima, Japan. Univ Tokyo, Inst Cosm Ray Res, Tokyo, Japan. Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China. Inst High Energy Phys, Vienna, Austria. Inst Theoret & Expt Phys, Moscow 117259, Russia. Jozef Stefan Inst, Ljubljana, Slovenia. Kanagawa Univ, Yokohama, Kanagawa, Japan. Korea Univ, Seoul 136701, South Korea. Kyoto Univ, Kyoto, Japan. Kyungpook Natl Univ, Taegu 702701, South Korea. Univ Lausanne, IPHE, Lausanne, Switzerland. Univ Ljubljana, Ljubljana, Slovenia. Univ Maribor, SLO-2000 Maribor, Slovenia. Univ Melbourne, Parkville, Vic 3052, Australia. Nagoya Univ, Nagoya, Aichi, Japan. Nara Womens Univ, Nara 630, Japan. Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan. Natl Lien Ho Inst Technol, Miaoli, Taiwan. Natl Taiwan Univ, Taipei 10764, Taiwan. H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland. Nihon Dent Coll, Niigata, Japan. Niigata Univ, Niigata, Japan. Osaka City Univ, Osaka 558, Japan. Osaka Univ, Osaka, Japan. Panjab Univ, Chandigarh 160014, India. Peking Univ, Beijing 100871, Peoples R China. Princeton Univ, Princeton, NJ 08544 USA. RIKEN, BNL, Res Ctr, Brookhaven, NY USA. Saga Univ, Saga 840, Japan. Seoul Natl Univ, Seoul, South Korea. Sungkyunkwan Univ, Suwon, South Korea. Univ Sydney, Sydney, NSW 2006, Australia. Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. Toho Univ, Funabashi, Chiba 274, Japan. Tohoku Gakuin Univ, Tagajo, Miyagi, Japan. Tohoku Univ, Sendai, Miyagi 980, Japan. Tokyo Inst Technol, Tokyo 152, Japan. Tokyo Metropolitan Univ, Tokyo 158, Japan. Tokyo Univ Agr & Technol, Tokyo, Japan. Toyama Natl Coll Maritime Technol, Toyama, Japan. Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. Utkal Univ, Bhubaneswar 751004, Orissa, India. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. Yokkaichi Univ, Yokaichi, Japan. Yonsei Univ, Seoul 120749, South Korea. RP Abe, K (reprint author), KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan. RI Drutskoy, Alexey/C-8833-2016; Huang, Hsuan-Cheng/C-7266-2011; Nitoh, Osamu/C-3522-2013; Marlow, Daniel/C-9132-2014; Ishikawa, Akimasa/G-6916-2012; Ishino, Hirokazu/C-1994-2015; Kim, Sun Kee/G-2042-2015; Pakhlov, Pavel/K-2158-2013; Danilov, Mikhail/C-5380-2014; Krokovny, Pavel/G-4421-2016; Chistov, Ruslan/B-4893-2014; Abe, Kazuo/F-6576-2010; Aihara, Hiroaki/F-3854-2010; Yokoyama, Masashi/A-4458-2011 OI Drutskoy, Alexey/0000-0003-4524-0422; Huang, Hsuan-Cheng/0000-0002-3386-0934; Ishino, Hirokazu/0000-0002-8623-4080; Kim, Sun Kee/0000-0002-0013-0775; Pakhlov, Pavel/0000-0001-7426-4824; Danilov, Mikhail/0000-0001-9227-5164; Krokovny, Pavel/0000-0002-1236-4667; Chistov, Ruslan/0000-0003-1439-8390; Aihara, Hiroaki/0000-0002-1907-5964; Yokoyama, Masashi/0000-0003-2742-0251 NR 23 TC 25 Z9 25 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 12 PY 2002 VL 89 IS 7 AR 071801 DI 10.1103/PhysRevLett.89.071801 PG 6 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100005 ER PT J AU Alavi-Harati, A Alexopoulos, T Arenton, M Arisaka, K Averitte, S Barbosa, RF Barker, AR Barrio, M Bellantoni, L Bellavance, A Belz, J Bergman, DR Blucher, E Bock, GJ Bown, C Bright, S Cheu, E Childress, S Coleman, R Corcoran, MD Corti, G Cox, B Cunha, A Erwin, AR Ford, R Glazov, A Golossanov, A Graham, G Graham, J Halkiadakis, E Hamm, J Hanagaki, K Hidaka, S Hsiung, YB Jejer, V Jensen, DA Kessler, R Kobrak, HGE LaDue, J Lath, A Ledovskoy, A McBride, PL Medvigy, D Mikelsons, P Monnier, E Nakaya, T Nelson, KS Nguyen, H O'Dell, V Pordes, R Prasad, V Qi, XR Quinn, B Ramberg, EJ Ray, RE Roodman, A Schnetzer, S Senyo, K Shanahan, P Shawhan, PS Shields, J Slater, W Solomey, N Somalwar, SV Stone, RL Swallow, EC Taegar, SA Tesarek, RJ Thomson, GB Toale, PA Tripathi, A Tschirhart, R Turner, SE Wah, YW Wang, J White, HB Whitmore, J Winstein, B Winston, R Yamanaka, T Zimmerman, ED AF Alavi-Harati, A Alexopoulos, T Arenton, M Arisaka, K Averitte, S Barbosa, RF Barker, AR Barrio, M Bellantoni, L Bellavance, A Belz, J Bergman, DR Blucher, E Bock, GJ Bown, C Bright, S Cheu, E Childress, S Coleman, R Corcoran, MD Corti, G Cox, B Cunha, A Erwin, AR Ford, R Glazov, A Golossanov, A Graham, G Graham, J Halkiadakis, E Hamm, J Hanagaki, K Hidaka, S Hsiung, YB Jejer, V Jensen, DA Kessler, R Kobrak, HGE LaDue, J Lath, A Ledovskoy, A McBride, PL Medvigy, D Mikelsons, P Monnier, E Nakaya, T Nelson, KS Nguyen, H O'Dell, V Pordes, R Prasad, V Qi, XR Quinn, B Ramberg, EJ Ray, RE Roodman, A Schnetzer, S Senyo, K Shanahan, P Shawhan, PS Shields, J Slater, W Solomey, N Somalwar, SV Stone, RL Swallow, EC Taegar, SA Tesarek, RJ Thomson, GB Toale, PA Tripathi, A Tschirhart, R Turner, SE Wah, YW Wang, J White, HB Whitmore, J Winstein, B Winston, R Yamanaka, T Zimmerman, ED CA KTeV Collaboration TI Radiative decay width measurements of neutral kaon excitations using the Primakoff effect SO PHYSICAL REVIEW LETTERS LA English DT Article ID MESONS AB We use K-L's in the 100-200 GeV energy range to produce 147 candidate events of the axial vector pair K-1(1270)-K-1(1400) in the nuclear Coulomb field of a Pb target and determine the radiative widths Gamma(K-1(1400)-->K-0+gamma)=280.8+/-23.2(stat)+/-40.4(syst) keV and Gamma(K-1(1270)-->K-0+gamma)=73.2+/-6.1(stat)+/-28.3(syst) keV. These first measurements appear to be lower than the quark-model predictions. We also place upper limits on the radiative widths for K-*(1410) and K-2(*)(1430) and find that the latter is vanishingly small in accord with SU(3) invariance in the naive quark model. C1 Univ Wisconsin, Madison, WI 53706 USA. Univ Arizona, Tucson, AZ 85721 USA. Univ Calif Los Angeles, Los Angeles, CA 90095 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Univ Colorado, Boulder, CO 80309 USA. Elmhurst Coll, Elmhurst, IL 60126 USA. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Osaka Univ, Toyonaka, Osaka 5600043, Japan. Rice Univ, Houston, TX 77005 USA. Rutgers State Univ, Piscataway, NJ 08854 USA. Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA. Univ Virginia, Inst Nucl & Particle Phys, Charlottesville, VA 22901 USA. Univ Sao Paulo, Sao Paulo, Brazil. CNRS, CPP, Marseille, France. RP Somalwar, SV (reprint author), Univ Wisconsin, Madison, WI 53706 USA. OI HSIUNG, YEE/0000-0003-4801-1238 NR 18 TC 6 Z9 6 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 AUG 12 PY 2002 VL 89 IS 7 AR 072001 DI 10.1103/PhysRevLett.89.072001 PG 5 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100006 PM 12190514 ER PT J AU Diener, RB Wu, B Raizen, MG Niu, Q AF Diener, RB Wu, B Raizen, MG Niu, Q TI Quantum tweezer for atoms SO PHYSICAL REVIEW LETTERS LA English DT Article ID BOSE-EINSTEIN CONDENSATE; NEUTRAL ATOMS; SINGLE-ATOM; TRAP AB We propose a quantum tweezer for extracting a desired number of neutral atoms from a reservoir. A trapped Bose-Einstein condensate is used as the reservoir, taking advantage of its coherent nature, which can guarantee a constant outcome. The tweezer is an attractive quantum dot, which may be generated by red-detuned laser light. By moving at certain speeds, the dot can extract a desired number of atoms from the condensate through Landau-Zener tunneling. The feasibility of our quantum tweezer is demonstrated through realistic and extensive model calculations. C1 Univ Texas, Dept Phys, Austin, TX 78712 USA. Univ Texas, Ctr Nonlinear Dynam, Austin, TX 78712 USA. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Diener, RB (reprint author), Univ Texas, Dept Phys, Austin, TX 78712 USA. RI Wu, Biao/B-3329-2008; Niu, Qian/G-9908-2013 OI Wu, Biao/0000-0001-9229-5894; NR 15 TC 54 Z9 54 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 AUG 12 PY 2002 VL 89 IS 7 AR 070401 DI 10.1103/PhysRevLett.89.070401 PG 4 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100002 PM 12190510 ER PT J AU Eshed, A Goktepeli, S Koymen, AR Kim, S Chen, WC O'Kelly, DJ Sterne, PA Weiss, AH AF Eshed, A Goktepeli, S Koymen, AR Kim, S Chen, WC O'Kelly, DJ Sterne, PA Weiss, AH TI Gamma spectra resulting from the annihilation of positrons with electrons in a single core level SO PHYSICAL REVIEW LETTERS LA English DT Article ID SOLIDS; DENSITY AB The first gamma spectra associated with the annihilation of positrons with individual core levels (Cu 3p and Ag 4p) are presented. The spectra were obtained by measuring the energy of gamma rays time coincident with Auger electrons emitted as a result of positrons annihilating with a selected core level. Relativistic calculations show good agreement with experiment over a limited range of momenta. However, statistically significant differences indicate that the measurements can provide an impetus to new calculations of many body effects in positron-core electrons annihilation. C1 Univ Texas, Dept Phys, Arlington, TX 76019 USA. Motorola Inc, Austin, TX 78721 USA. Univ Texas, Nucl Engn Teaching Lab, Austin, TX 78712 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Univ Texas, Dept Phys, POB 19059, Arlington, TX 76019 USA. RI Weiss, Alex/G-4941-2011 NR 15 TC 10 Z9 10 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 AUG 12 PY 2002 VL 89 IS 7 AR 075503 DI 10.1103/PhysRevLett.89.075503 PG 4 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100019 PM 12190527 ER PT J AU Luo, X Zhang, SB Wei, SH AF Luo, X Zhang, SB Wei, SH TI Chemical design of direct-gap light-emitting silicon SO PHYSICAL REVIEW LETTERS LA English DT Article ID QUANTUM CONFINEMENT; GE; SEMICONDUCTORS; SUPERLATTICES; NANOCRYSTALS; EMISSION; SI AB Quantum confinement effect has been the dominant approach guiding the search for light-emitting silicon. By first-principles total energy calculations of Si delta-doped with oxygen layers, however, we show that this generally accepted mechanism is ineffective. Instead, a different mechanism is proposed based on defect engineering where the oxygen atoms chemically shift the valence band edge of Si away from the zone center, resulting in the desired optical functionality. Our calculation suggests new design principles for light-emitting silicon as well as providing the microscopic origin for the observed strong luminescence and band gap increase in the SiO(001) multi-delta-layers. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013 OI Zhang, Shengbai/0000-0003-0833-5860 NR 22 TC 10 Z9 10 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 12 PY 2002 VL 89 IS 7 AR 076802 DI 10.1103/PhysRevLett.89.076802 PG 4 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100038 PM 12190546 ER PT J AU McMahon, WE Batyrev, IG Olson, JM Zhang, SB AF McMahon, WE Batyrev, IG Olson, JM Zhang, SB TI Strain-driven mesoscopic reconstruction of the As/Ge(111) surface SO PHYSICAL REVIEW LETTERS LA English DT Article ID SCANNING TUNNELING MICROSCOPE; AB-INITIO; MOLECULAR-DYNAMICS; CRYSTAL-SURFACES; NANOSTRUCTURES; TRANSITION; GERMANIUM; GE(111); SI(111); SI(100) AB Periodic arrays of large hexagonal tiles (up to 170 Angstrom in size) are observed on As/Ge(111) surfaces. First-principles total energy calculations combined with scanning tunneling microscopy reveal a (5-7-5)-ringed structure for the trenches that separate the tiles. We find that trenches form via an exothermic process. The calculated equilibrium trench spacing of similar to104 Angstrom agrees with experiment. Comparison between first-principles calculations and continuum elasticity theory suggests that the observed mesoscopic reconstruction is driven entirely by long-range surface strain relaxation. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013 OI Zhang, Shengbai/0000-0003-0833-5860 NR 28 TC 5 Z9 5 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 AUG 12 PY 2002 VL 89 IS 7 AR 076103 DI 10.1103/PhysRevLett.89.076103 PG 4 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100027 PM 12190535 ER PT J AU Petkov, V Billinge, SJL Vogt, T Ichimura, AS Dye, JL AF Petkov, V Billinge, SJL Vogt, T Ichimura, AS Dye, JL TI Structure of intercalated Cs in zeolite ITQ-4: An array of metal ions and correlated electrons confined in a pseudo-1D nanoporous host SO PHYSICAL REVIEW LETTERS LA English DT Article ID PAIR DISTRIBUTION FUNCTION; LOCAL-STRUCTURE; ELECTRIDES; NANOCLUSTERS; ANIONS; PROGRAM AB The presence of Cs+ ions in the pseudo-1D nanopores of zeolite ITQ-4, Si32O64, is confirmed by x-ray diffraction and atomic pair distribution function analysis. Inside the nanopores the Cs+ ions are found to assemble in zigzag chains and thus form an extended, positively charged sublattice providing charge balance for a low-density electron gas also confined to the nanopores. C1 Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Michigan State Univ, Ctr Fundamental Mat Res, E Lansing, MI 48824 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. RP Petkov, V (reprint author), Cent Michigan Univ, Dept phys, Mt Pleasant, MI 48859 USA. RI Vogt, Thomas /A-1562-2011 OI Vogt, Thomas /0000-0002-4731-2787 NR 24 TC 55 Z9 55 U1 0 U2 15 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 AUG 12 PY 2002 VL 89 IS 7 AR 075502 DI 10.1103/PhysRevLett.89.075502 PG 4 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100018 PM 12190526 ER PT J AU Reichhardt, C Olson, CJ AF Reichhardt, C Olson, CJ TI Colloidal dynamics on disordered substrates SO PHYSICAL REVIEW LETTERS LA English DT Article ID CHARGE-DENSITY WAVES; FLUX-LINE-LATTICE; VORTEX LATTICE; 2 DIMENSIONS; PLASTIC-FLOW; SUPERCONDUCTORS; BEHAVIOR; CRYSTALS; PHASES; MODEL AB Using Langevin simulations, we examine driven colloids interacting with quenched disorder. For weak substrates the colloids form an ordered state and depin elastically. For increasing substrate strength, we find a sharp crossover to inhomogeneous depinning and a substantial increase in the depinning force, analogous to the peak effect in superconductors. The velocity versus driving force curve shows criticality at depinning, with a change in scaling exponent occurring at the order to disorder crossover. Upon application of a sudden pulse of driving force, pronounced transients appear in the disordered regime which are due to the formation of long-lived colloidal flow channels. C1 Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Reichhardt, C (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. OI Reichhardt, Cynthia/0000-0002-3487-5089 NR 41 TC 72 Z9 73 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 AUG 12 PY 2002 VL 89 IS 7 AR 078301 DI 10.1103/PhysRevLett.89.078301 PG 4 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100051 PM 12190559 ER PT J AU Ronnow, HM McMorrow, DF Coldea, R Harrison, A Youngson, ID Perring, TG Aeppli, G Syljuasen, O Lefmann, K Rischel, C AF Ronnow, HM McMorrow, DF Coldea, R Harrison, A Youngson, ID Perring, TG Aeppli, G Syljuasen, O Lefmann, K Rischel, C TI Comment on "Spin dynamics of the 2D spin 1/2 quantum antiferromagnet copper deuteroformate tetradeuterate (CFTD)" - Reply SO PHYSICAL REVIEW LETTERS LA English DT Editorial Material C1 CEA, DRFMC, F-38054 Grenoble, France. Riso Natl Lab, DK-4000 Roskilde, Denmark. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. Univ Edinburgh, Edinburgh EH9 3JJ, Midlothian, Scotland. NEC Res Inst, Princeton, NJ 08540 USA. NORDITA, DK-2100 Copenhagen, Denmark. Niels Bohr Inst, DK-2100 Copenhagen, Denmark. RP Ronnow, HM (reprint author), CEA, DRFMC, F-38054 Grenoble, France. RI McMorrow, Desmond/C-2655-2008; Lefmann, Kim/M-9228-2014; Ronnow, Henrik/A-4953-2009 OI McMorrow, Desmond/0000-0002-4947-7788; Lefmann, Kim/0000-0003-4282-756X; Ronnow, Henrik/0000-0002-8832-8865 NR 5 TC 0 Z9 0 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 12 PY 2002 VL 89 IS 7 AR 079702 DI 10.1103/PhysRevLett.89.079702 PG 1 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100058 ER PT J AU Wang, LG Pennycook, SJ Pantelides, ST AF Wang, LG Pennycook, SJ Pantelides, ST TI The role of the nanoscale in surface reactions: CO2 on CdSe SO PHYSICAL REVIEW LETTERS LA English DT Article ID TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; CARBON-DIOXIDE; MOLECULAR-DYNAMICS; QUANTUM DOTS; PHOTOREDUCTION; REDUCTION; NANOCRYSTALLITES; PHOTOCATALYSIS; SEMICONDUCTORS AB Cd-rich CdSe nanocrystals below a critical size, under illumination, catalyze CO2 fixation, but bulk CdSe surfaces do not. We report first-principles calculations in which we determine the roles of faceting, deviations from stoichiometry, photoexcitation, and electron confinement, and the specific physics of the nanoscale. We further establish that catalysis does not occur at the nanocrystal surface; instead, neutral molecules adsorb, desorb negatively charged, and react elsewhere. Finally, we predict that n-type doped CdSe nanocrystals would be effective catalysts without photoexcitation. C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. RP Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. EM lwang@nrel.gov NR 32 TC 19 Z9 20 U1 3 U2 25 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 12 PY 2002 VL 89 IS 7 AR 075506 DI 10.1103/PhysRevLett.89.075506 PG 4 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100022 PM 12190530 ER PT J AU Yang, CL Zhang, J Du, RR Simmons, JA Reno, JL AF Yang, CL Zhang, J Du, RR Simmons, JA Reno, JL TI Zener tunneling between Landau orbits in a high-mobility two-dimensional electron gas SO PHYSICAL REVIEW LETTERS LA English DT Article ID QUANTUM HALL REGIME; MAGNETORESISTANCE OSCILLATIONS; HETEROSTRUCTURES AB Magnetotransport in a laterally confined two-dimensional electron gas (2DEG) can exhibit modified scattering channels owing to a tilted Hall potential. Transitions of electrons between Landau levels with shifted guiding centers can be accomplished through a Zener tunneling mechanism, and make a significant contribution to the magnetoresistance. A remarkable oscillation effect in weak field magnetoresistance has been observed in high-mobility 2DEGs in GaAs-AlGa As-0.3 (0.7) heterostructures, and can be well explained by the Zener mechanism. C1 Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Yang, CL (reprint author), Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA. NR 19 TC 123 Z9 125 U1 1 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 12 PY 2002 VL 89 IS 7 AR 076801 DI 10.1103/PhysRevLett.89.076801 PG 4 WC Physics, Multidisciplinary SC Physics GA 579WE UT WOS:000177200100037 PM 12190545 ER PT J AU Grondalski, J Etlinger, DM James, DFV AF Grondalski, J Etlinger, DM James, DFV TI The fully entangled fraction as an inclusive measure of entanglement applications SO PHYSICS LETTERS A LA English DT Article DE entanglement; dense coding; teleportation; entanglement swapping; fully entangled fraction ID PODOLSKY-ROSEN CHANNELS; QUANTUM CRYPTOGRAPHY; EXPERIMENTAL REALIZATION; STATE ENTANGLEMENT; BELL INEQUALITIES; DENSITY-MATRICES; MIXED STATES; 2 QUBITS; TELEPORTATION; PHOTONS AB Characterizing entanglement in all but the simplest case of a two qubit pure state is a hard problem, even understanding the relevant experimental quantities that are related to entanglement is difficult. It may not be necessary, however, to quantify the entanglement of a state in order to quantify the quantum information processing significance of a state. It is known that the fully entangled fraction has a direct relationship to the fidelity of teleportation maximized under the actions of local unitary operations. In the case of two qubits we point out that the fully entangled fraction can also be related to the fidelities, maximized under the actions of local unitary operations, of other important quantum information tasks such as dense coding, entanglement swapping and quantum cryptography in such a way as to provide an inclusive measure of these entanglement applications. For two qubit systems the fully entangled fraction has a simple known closed-form expression and we establish lower and upper bounds of this quantity with the concurrence. This approach is readily extendable to more complicated systems. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87545 USA. RP Grondalski, J (reprint author), Los Alamos Natl Lab, Div Theory, POB 1663,T-4, Los Alamos, NM 87545 USA. EM jcat@t4.lanl.gov RI James, Daniel/B-9805-2009 OI James, Daniel/0000-0003-3981-4602 NR 46 TC 26 Z9 26 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD AUG 12 PY 2002 VL 300 IS 6 BP 573 EP 580 AR PII S0375-9601(02)00884-8 DI 10.1016/S0375-9601(02)00884-8 PG 8 WC Physics, Multidisciplinary SC Physics GA 589GX UT WOS:000177751400005 ER PT J AU Yamato, K Bartsch, RA Broker, GA Rogers, RD Dietz, ML AF Yamato, K Bartsch, RA Broker, GA Rogers, RD Dietz, ML TI Synthesis of chiral trans-anti-trans-isomers of dicyclohexano-18-crown-6 via an enzymatic reaction and the solid-state structure of one enantiomer SO TETRAHEDRON LETTERS LA English DT Article DE stereospecific synthesis; chiral crown ether; enzymatic reaction; solid-state structure ID MACROCYCLE INTERACTION; KINETIC DATA; NEUTRAL MOLECULES; CATIONS; EXTRACTION; ANIONS; ACID AB Chiral trans-anti-trans-dicyclohexano-18-crown-6 isomers are synthesized via a lipase-catalyzed reaction. The solid-state structure of the (S)-enantiomer is determined and compared with those reported for 18-crown-6 and trans-syn-trans-dicyclohexano-18-crown-6. (C) 2002 Elsevier Science Ltd. All rights reserved. C1 Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA. Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Bartsch, RA (reprint author), Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA. RI Rogers, Robin/C-8265-2013; Yamato, Kazuhiro/G-4213-2013 OI Rogers, Robin/0000-0001-9843-7494; Yamato, Kazuhiro/0000-0001-9592-0739 NR 20 TC 7 Z9 7 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0040-4039 J9 TETRAHEDRON LETT JI Tetrahedron Lett. PD AUG 12 PY 2002 VL 43 IS 33 BP 5805 EP 5808 AR PII S0040-4039(02)01187-5 DI 10.1016/S0040-4039(02)01187-5 PG 4 WC Chemistry, Organic SC Chemistry GA 580YD UT WOS:000177263600025 ER PT J AU Eggleton, PP Kiseleva-Eggleton, L AF Eggleton, PP Kiseleva-Eggleton, L TI The evolution of cool algols SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries : eclipsing; stars : evolution; stars : magnetic fields; stars : mass loss ID CA-II H; CLOSE BINARIES; DOUBLE-DEGENERATE; ANGULAR-MOMENTUM; MAIN-SEQUENCE; WHITE-DWARFS; SS-LACERTAE; SYSTEMS; STAR; PERIOD AB We apply a model of dynamo-driven mass loss, magnetic braking, and tidal friction to the evolution of stars with cool convective envelopes; in particular, we apply it to binary stars where the combination of magnetic braking and tidal friction can cause angular momentum loss from the orbit. For the present we consider the simplification that only one component of a binary is subject to these nonconservative effects, but we emphasize the need in some circumstances to permit such effects in both components. The model is applied to examples of (1) the Sun, (2) BY Dra binaries, (3) Am binaries, (4) RS CVn binaries, (5) Algols, and (6) post-Algols. A number of problems regarding some of these systems appear to find a natural explanation in our model. There are indications from other systems that some coefficients in our model may vary by a factor of 2 or so from system to system; this may be a result of the chaotic nature of dynamo activity. C1 Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. St Marys Coll, Dept Math, Moraga, CA 94575 USA. RP Eggleton, PP (reprint author), Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. NR 43 TC 79 Z9 79 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 10 PY 2002 VL 575 IS 1 BP 461 EP 473 DI 10.1086/341215 PN 1 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 581BH UT WOS:000177270900041 ER PT J AU Cummins, SJ Brackbill, JU AF Cummins, SJ Brackbill, JU TI An implicit particle-in-cell method for granular materials SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE granular flow; finite-difference methods; implicit methods; quadratic conserving; nonlinear stability; Newton-Krylov ID NONLINEAR SOLUTION METHOD; DISTINCT ELEMENT METHOD; MATERIAL-POINT METHOD; NUMERICAL SIMULATIONS; KRYLOV METHODS; 2 DIMENSIONS; FLOW; FLUCTUATIONS; ALGORITHMS; DYNAMICS AB An implicit-in-time method for granular materials is described. The method combines the material point method, a first-order contact algorithm, and a Newton-Krylov equation solver to give improved energy conservation, stabilization of the finite-grid-instability, and the correct description of collisions between grains. (C) 2002 Elsevier Science (USA). C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Cummins, SJ (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RI Cummins, Sharen/D-4842-2009 OI Cummins, Sharen/0000-0001-7745-1393 NR 59 TC 26 Z9 28 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 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD AUG 10 PY 2002 VL 180 IS 2 BP 506 EP 548 DI 10.1006/jcph.2002.7101 PG 43 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 583BE UT WOS:000177385000005 ER PT J AU Tuminaro, RS Walker, HF Shadid, JN AF Tuminaro, RS Walker, HF Shadid, JN TI On backtracking failure in Newton-GMRES methods with a demonstration for the Navier-Stokes equations SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE Navier-Stokes equations; Newton's method; backtracking; linesearch; damping; Newton-GMRES methods; Newton-Krylov methods; Newton iterative methods; truncated Newton methods; inexact Newton methods ID SYSTEMS; HEAT AB In an earlier study of inexact Newton methods, we pointed out that certain counterintuitive behavior may occur when applying residual backtracking to the Navier-Stokes equations with heat and mass transport. Specifically, it was observed that a Newton-GMRES method globalized by backtracking (linesearch, damping) may be less robust when high accuracy is required of each linear solve in the Newton sequence than when less accuracy is required. In this brief discussion, we offer a possible explanation for this phenomenon, together with an illustrative numerical experiment involving the Navier-Stokes equations. (C) 2002 Elsevier Science (USA). C1 Sandia Natl Labs, Livermore, CA 94551 USA. Worcester Polytech Inst, Dept Math Sci, Worcester, MA 01609 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Tuminaro, RS (reprint author), Sandia Natl Labs, MS 9214,POB 969, Livermore, CA 94551 USA. NR 15 TC 23 Z9 24 U1 0 U2 1 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD AUG 10 PY 2002 VL 180 IS 2 BP 549 EP 558 DI 10.1006/jcph.2002.7102 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 583BE UT WOS:000177385000006 ER PT J AU Dendy, ED Padial-Collins, NT VanderHeyden, WB AF Dendy, ED Padial-Collins, NT VanderHeyden, WB TI A general-purpose finite-volume advection scheme for continuous and discontinuous fields on unstructured grids SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE advection; reconstruction; interface tracking; volume of fluid; unstructured meshes; unstructured grids; finite-volume method ID FLOW AB We present a new general-purpose advection scheme for unstructured meshes based on the use of a variation of the interface-tracking flux formulation recently put forward by O. Ubbink and R. I. Issa (J. Comput. Phys. 153, 26 (1999)), in combination with an extended version of the flux-limited advection scheme of J. Thuburn (J. Comput. Phys. 123, 74 (1996)), for continuous fields. Thus, along with a high-order mode for continuous fields, the new scheme presented here includes optional integrated interface-tracking modes for discontinuous fields. In all modes, the method is conservative, monotonic, and compatible. It is also highly shape preserving. The scheme works on unstructured meshes composed of any kind of connectivity element, including triangular and quadrilateral elements in two dimensions and tetrahedral and hexahedral elements in three dimensions. The scheme is finite-volume based and is applicable to control-volume finite-element and edge-based node-centered computations. An explicit-implicit extension to the continuous-field scheme is provided only to allow for computations in which the local Courant number exceeds unity. The transition from the explicit mode to the implicit mode is performed locally and in a continuous fashion, providing a smooth hybrid explicit-implicit calculation. Results for a variety of test problems utilizing the continuous and discontinuous advection schemes are presented. (C) 2002 Elsevier Science (USA). C1 Los Alamos Natl Lab, Div Theoret, Fluid Dynam Grp T3, Los Alamos, NM 87545 USA. Los Alamos Comp Sci Inst, Los Alamos, NM 87545 USA. RP Dendy, ED (reprint author), Los Alamos Natl Lab, Div Theoret, Fluid Dynam Grp T3, Los Alamos, NM 87545 USA. NR 11 TC 15 Z9 16 U1 0 U2 4 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 AUG 10 PY 2002 VL 180 IS 2 BP 559 EP 583 DI 10.1006/jcph.2002.7105 PG 25 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 583BE UT WOS:000177385000007 ER PT J AU Yoo, K Tang, SJ Sprunger, PT Benito, I Ortega, J Flores, F Snijders, PC Demeter, MC Weitering, HH AF Yoo, K Tang, SJ Sprunger, PT Benito, I Ortega, J Flores, F Snijders, PC Demeter, MC Weitering, HH TI Electronic structure of a surface quantum-wire array SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 57th Yamada Conference on Atomic-Scale Surface Designing for Functional Low-Dimensional Materials CY NOV 14-16, 2001 CL NATL INST ADV IND SCI & TECHNOL, TSUKUBA, JAPAN HO NATL INST ADV IND SCI & TECHNOL DE density functional calculations; gallium; high index single crystal surfaces; scanning tunneling microscopy; photoelectron spectroscopy; surface structure, morphology, roughness, and topography ID SI(112); LEVEL; GA AB The Ga/Si(112) interface consists of a self-assembled, mesoscopic array of "atomic wires" on a high-index Si(112) surface. The structural uniformity of the atomic-wires or "quantum-wire array" appears far superior to those created by nano-lithography or STM atom manipulation, which presents an interesting opportunity to explore electronic transport in atomic wires of mesoscopic length. The structure and electronic structure of the atomic-wire array is investigated by means of first-principles total-energy calculations and photoemission experiments. The electronic conduction channels appear to be orthogonal to the crystallographic chains. (C) 2002 Published by Elsevier Science B.V. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. Louisiana State Univ, Ctr Adv Microstruct & Dev, Baton Rouge, LA 70806 USA. Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor Mat Condensata, E-28049 Madrid, Spain. Delft Univ Technol, Dept Appl Phys, NL-2628 CJ Delft, Netherlands. Delft Univ Technol, DIMES, NL-2628 CJ Delft, Netherlands. RP Weitering, HH (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RI Flores, fernando/K-2362-2014; Ortega Mateo, Jose/I-4358-2014 OI Ortega Mateo, Jose/0000-0001-9156-1038 NR 16 TC 4 Z9 4 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD AUG 10 PY 2002 VL 514 IS 1-3 SI SI BP 100 EP 107 AR PII S0039-6028(02)01614-X DI 10.1016/S0039-6028(02)01614-X PG 8 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 590QA UT WOS:000177832500016 ER PT J AU Rubio, MA Kim, SH Campisi, J AF Rubio, MA Kim, SH Campisi, J TI Reversible manipulation of telomerase expression and telomere length - Implications for the ionizing radiation response and replicative senescence of human cells SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID NORMAL HUMAN FIBROBLASTS; LIFE-SPAN; CELLULAR SENESCENCE; RETROVIRAL VECTORS; PREMATURE SENESCENCE; TRANSCRIPTION FACTOR; EPITHELIAL-CELLS; CRE RECOMBINASE; GENE-TRANSFER; IN-VIVO AB Most human cells do not express telomerase and irreversibly arrest proliferation after a finite number of divisions (replicative senescence). Several lines of evidence suggest that replicative senescence is caused by short dysfunctional telomeres, which arise when DNA is replicated in the absence of adequate telomerase activity. We describe a method to reversibly bypass replicative senescence and generate mass cultures that have different average telomere lengths. A retrovirus carrying hTERT flanked by excision sites for Cre recombinase rendered normal human fibroblasts telomerase-positive and replicatively immortal. Superinfection with retroviruses carrying wild-type or mutant forms of TIN2, a negative regulator of telomere length, created telomerase-positive, immortal populations with varying average telomere lengths. Subsequent infection with a Cre-expressing retrovirus abolished telomerase activity, creating mortal cells with varying telomere lengths. Using these cell populations, we show that, after hTERT excision, cells senesce with shorter telomeres than parental cells. Moreover, long telomeres, but not telomerase, protected cells from the loss of division potential caused by ionizing radiation. Finally, although telomerase-negative cells with short telomeres senesced after fewer doublings than those with long telomeres, telomere length per se did not correlate with senescence. Our results support a role for telomere structure, rather than length, in replicative senescence. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Campisi, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd,Mailstop 84-171, Berkeley, CA 94720 USA. NR 61 TC 63 Z9 69 U1 1 U2 2 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 AUG 9 PY 2002 VL 277 IS 32 BP 28609 EP 28617 DI 10.1074/jbc.M203747200 PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 582GX UT WOS:000177342600035 PM 12034742 ER PT J AU Stacey, M Chang, GW Sanos, SL Chittenden, LR Stubbs, L Gordon, S Lin, HH AF Stacey, M Chang, GW Sanos, SL Chittenden, LR Stubbs, L Gordon, S Lin, HH TI EMR4, a novel epidermal growth factor (EGF)-TM7 molecule up-regulated in activated mouse macrophages, binds to a putative cellular ligand on B lymphoma cell line A20 SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID PROTEIN-COUPLED RECEPTORS; ALPHA-LATROTOXIN RECEPTOR; 7-PASS TRANSMEMBRANE RECEPTOR; MESSENGER-RNA; EXTRACELLULAR DOMAIN; DIFFERENTIAL DISPLAY; POINT MUTATIONS; DENDRITIC CELLS; SECRETIN FAMILY; MARFAN-SYNDROME AB A novel member of the EGF-TM7 family, mEMR4, was identified and characterized. The full-length mouse EMR4 cDNA encodes a predicted 689-amino acid protein containing two epidermal growth factor (EGF)-like modules, a mucin-like spacer domain, and a seven-transmembrane domain with a cytoplasmic tail. Genetic mapping established that mEMR4 is localized in the distal region of mouse chromosome 17 in close proximity to another EGF-TM7 gene, F4/80 (Emr1). Similar to F4/80, mEMR4 is predominantly expressed on resident macrophages. However, a much lower expression level was also detected in thioglycollate-elicited peritoneal neutrophils and bone marrow-derived dendritic cells. The expression of mEMR4 is up-regulated following macrophage activation in Biogel and thioglycollate-elicited peritoneal macrophages. Similarly, mEMR4 is over-expressed in TNF-alpha-treated resident peritoneal macrophages, whereas interleukin-4 and -10 dramatically reduce the expression. mEMR4 was found to undergo proteolytic processing within the extracellular stalk region resulting in two protein subunits associated noncovalently as a heterodimer. The proteolytic cleavage site was identified by N-terminal amino acid sequencing and located at the conserved GPCR (G protein-coupled receptor) proteolytic site in the extracellular region. Using multivalent biotinylated mEMR4-mFc fusion proteins as a probe, a putative cell surface ligand was identified on a B lymphoma cell line, A20, in a cell-binding assay. The mEMR4-ligand interaction is Ca2+-independent and is mediated predominantly by the second EGF-like module. mEMR4 is the first EGF-TM7 receptor known to mediate the cellular interaction between myeloid cells and B cells. C1 Univ Oxford, Sir William Dunn Sch Pathol, Oxford OX1 3RE, England. Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94550 USA. RP Lin, HH (reprint author), Univ Oxford, Sir William Dunn Sch Pathol, S Parks Rd, Oxford OX1 3RE, England. OI Stubbs, Lisa/0000-0002-9556-1972 NR 71 TC 63 Z9 65 U1 0 U2 6 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 AUG 9 PY 2002 VL 277 IS 32 BP 29283 EP 29293 DI 10.1074/jbc.M204306200 PG 11 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 582GX UT WOS:000177342600118 PM 12023293 ER PT J AU Nyman, M Bonhomme, F Alam, TM Rodriguez, MA Cherry, BR Krumhansl, JL Nenoff, TM Sattler, AM AF Nyman, M Bonhomme, F Alam, TM Rodriguez, MA Cherry, BR Krumhansl, JL Nenoff, TM Sattler, AM TI A general synthetic procedure for heteropolyniobates SO SCIENCE LA English DT Article ID POLYOXOMETALATE-DIPHOSPHATE COMPLEXES AB The heteropolyanions of W, Mo, and V, which have found numerous applications, are formed simply by acidification of solutions of their oxoanions. Under similar conditions, these oxoanion precursors are not available for Nb, and Nb-oxo chemistry is dominated by formation of the Lindquist ion [Nb6O19](8-) only. However, heteropolyniobate formation is favored in hydrothermal reactions of aqueous, alkaline precursor mixtures. Here we give two examples of heteropolyniobates formed by this general reaction type: K-12[Ti2O2] [SiNb12O40].16H(2)O [1], which contains chains of silicododecaniobate Keggin ions, and Na-14[H2Si4Nb16O56].45.5H(2)O [2], a new heteropolyanion structure type. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Nyman, M (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. OI Bonhomme, Francois/0000-0002-8792-9239 NR 22 TC 165 Z9 167 U1 9 U2 47 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD AUG 9 PY 2002 VL 297 IS 5583 BP 996 EP 998 DI 10.1126/science.1073979 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 581ZN UT WOS:000177325400040 PM 12169730 ER PT J AU Rodriguez, JA Etxeberria, A Gonzalez, L Maiti, A AF Rodriguez, JA Etxeberria, A Gonzalez, L Maiti, A TI Structural and electronic properties of PbTiO3, PbZrO3, and PbZr0.5Ti0.5O3: First-principles density-functional studies SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MIXED-METAL OXIDES; GENERALIZED GRADIENT APPROXIMATION; TOTAL-ENERGY CALCULATIONS; NEUTRON-DIFFRACTION; CHEMICAL-PROPERTIES; TIO2(110) SURFACE; MGO(100) SURFACE; LEAD ZIRCONATE; PLANE-WAVE; ANTIFERROELECTRIC PBZRO3 AB Perovskites of the PbZr1-xTixO3 type are among the most important ferroelectric materials and highly active catalysts. The structural and electronic properties of PbTiO3, PbZrO3, and PbZr0.5Ti0.5O3 were examined using first-principles density-functional (DF) calculations with the local-density-approximation (LDA) or the generalized-gradient approximation (GGA, Perdew-Wang and Perdew-Burke-Ernzerhoff functionals). A series of crystal structures were considered for each compound. In several cases, the structural parameters predicted by the GGA functionals were clearly in better agreement with experimental results than the LDA-predicted values, but in qualitative terms the LDA and GGA approaches always predicted similar trends for crystal geometries and differences in thermochemical stability. DF calculations at the LDA level could underestimate the ferroelectric character of PbTiO3 and PbZr1-xTixO3. In the perovskites, the most stable structures belong to tetragonal (PbTiO3), orthorhombic (PbZrO3), and monoclinic (PbZr0.5Ti0.5O3) space groups. The positions of the Zr and Ti cations in the tetragonal and monoclinic phases of PbZr0.5Ti0.5O3 were determined. The calculated structural parameters give theoretical x-ray diffraction patterns that reproduce well experimental data. In general, Zr is much more rigid than Ti for displacements along the [001] direction in the cubic, tetragonal and monoclinic phases of PbZr1-xTixO3 compounds. The lead titanates/zirconates exhibit very strong metal<---->oxygen<---->metal interactions that drastically modify the electron density on the metal cations with respect to TiO2, ZrO2, and PbO. A similar phenomenon is observed in a series of ABO(3) perovskites (A=Ca,Sr,Li,K,Na; B=Ti,Zr,Nb), and it is an important factor to consider when mixing AO and BO2 oxides for catalytic applications. (C) 2002 American Institute of Physics. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Univ Zaragoza, Inst Ciencia Mat, E-50009 Zaragoza, Spain. Accelrys Inc, San Diego, CA 92121 USA. RP Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM rodrigez@bnl.gov NR 92 TC 36 Z9 36 U1 6 U2 29 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 8 PY 2002 VL 117 IS 6 BP 2699 EP 2709 DI 10.1063/1.1490343 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 577BX UT WOS:000177042800028 ER PT J AU Gokhberg, K Glozman, A Lifshitz, E Maniv, T Schlamp, MC Alivisatos, P AF Gokhberg, K Glozman, A Lifshitz, E Maniv, T Schlamp, MC Alivisatos, P TI Electron (hole) paramagnetic resonance of spherical CdSe nanocrystals SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SEMICONDUCTOR QUANTUM DOTS; LUMINESCENCE; ABSORPTION; ASSIGNMENT; COLLOIDS AB A new mechanism of electron paramagnetic resonance in spherical zinc-blende semiconductor nanocrystals, based on the extended orbital motion of electrons in the entire nanocrystal, is presented. Quantum confinement plays a crucial role in making the resonance signal observable. The mechanism remains operative in nanocrystals with uniaxially distorted shape. A theoretical model based on the proposed mechanism is in good quantitative agreement with unusual ODMR spectra observed in nearly spherical CdSe nanocrystals. (C) 2002 American Institute of Physics. C1 Technion Israel Inst Technol, Dept Chem, IL-32000 Haifa, Israel. Technion Israel Inst Technol, Inst Solid State, IL-32000 Haifa, Israel. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Gokhberg, K (reprint author), Technion Israel Inst Technol, Dept Chem, IL-32000 Haifa, Israel. RI Alivisatos , Paul /N-8863-2015 OI Alivisatos , Paul /0000-0001-6895-9048 NR 22 TC 8 Z9 8 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 8 PY 2002 VL 117 IS 6 BP 2909 EP 2913 DI 10.1063/1.1491407 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 577BX UT WOS:000177042800054 ER PT J AU McCoy, JD Ye, Y Curro, JG AF McCoy, JD Ye, Y Curro, JG TI Application of density functional theory to tethered polymer chains: Athermal systems SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MONTE-CARLO SIMULATION; SELF-CONSISTENT-FIELD; MOLECULAR-DYNAMICS; SLIT PORE; BRUSHES; SOLVENT; MATRICES; LAYERS; ADSORPTION; INTERFACE AB Athermal, tethered chains are modeled with density functional (DFT) theory for both the explicit solvent and continuum solvent cases. The structure of DFT is shown to reduce to self-consistent-field theory in the incompressible limit where there is symmetry between solvent and monomer, and to single-chain-mean-field (SCMF) theory in the continuum solvent limit. We show that by careful selection of the reference and ideal systems in DFT theory, self-consistent numerical solutions can be obtained, thereby avoiding the single chain Monte Carlo simulation in SCMF theory. On long length scales, excellent agreement is seen between the simplified DFT theory and molecular dynamics simulations of both continuum solvents and explicit-molecule solvents. In order to describe the structure of the polymer and solvent near the surface it is necessary to include compressibility effects and the nonlocality of the field. (C) 2002 American Institute of Physics. C1 New Mexico Inst Min & Technol, Dept Mat & Met Engn, Socorro, NM 87801 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP McCoy, JD (reprint author), New Mexico Inst Min & Technol, Dept Mat & Met Engn, Socorro, NM 87801 USA. RI McCoy, John/B-3846-2010 OI McCoy, John/0000-0001-5404-1404 NR 39 TC 35 Z9 35 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 8 PY 2002 VL 117 IS 6 BP 2975 EP 2986 DI 10.1063/1.1491242 PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 577BX UT WOS:000177042800061 ER PT J AU Santos, M Marcalo, J de Matos, AP Gibson, JK Haire, RG AF Santos, M Marcalo, J de Matos, AP Gibson, JK Haire, RG TI Gas-phase oxidation reactions of neptunium and plutonium ions investigated via Fourier Transform Ion Cyclotron Resonance Mass Spectrometry SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID ACTINIDE IONS; ORGANOMETALLIC CHEMISTRY; HYDROCARBON ACTIVATION; IONIZATION ENERGIES; = TH; URANIUM; CATIONS; ALKENES; OXIDE; THERMOCHEMISTRY AB The first gas-phase ion chemistry studies of the transuranium actinides Np and Pit by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FTICR-MS) have been performed. Reactions of An(+) and AnO(+) (An = Th, U, Np, and Pu) with N2O, C2H4O (ethylene oxide), H2O, O-2, CO2, NO, and CH2O have been studied, with a focus on the oxidation of transuranium ions. All the An(+) ions formed AnO(+) with all the oxidants studied. with the exception of Pu+ with CH2O, in accord with the known bond dissociation energies, BDE(An(+)-O). The reaction efficiencies appear to correlate with the magnitude of the promotion energies from the ground states to reactive-state configurations of the An(+) ions. Only N2O and C2H4O oxidized all AnO(+) to AnO(2)(+); CO2 and NO oxidized only UO+; H2O and O-2 oxidized UO+, NpO+, and PuO+; and CH2O was unreactive with all the AnO(+) ions. The observed formation of PuO2+ from the oxidants weaker than N2O is in conflict with the literature values for BDE(OPu+-O), which we conclude are significantly too low. Charge-transfer "bracketing" experiments to determine the ionization energy of PuO2 were performed, from which a value of 7.03+/-0.12 eV was obtained. This IE(PuO2) is 2-3 eV lower than the literature values, but in accord with our observations for the oxidation thermodynamics. C1 Inst Tecnol & Nucl, Dept Quim, P-2686953 Sacavem, Portugal. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Marcalo, J (reprint author), Inst Tecnol & Nucl, Dept Quim, P-2686953 Sacavem, Portugal. EM jmarcalo@itn.pt; gibsonjk@ornl.gov RI Marcalo, Joaquim/J-5476-2013; Santos, Marta/A-2411-2012; OI Marcalo, Joaquim/0000-0001-7580-057X; Santos, Marta/0000-0002-8755-9442; Pires de Matos, Antonio/0000-0003-2674-6938 NR 46 TC 48 Z9 48 U1 3 U2 19 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD AUG 8 PY 2002 VL 106 IS 31 BP 7190 EP 7194 DI 10.1021/jp025733f PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 581VH UT WOS:000177314300015 ER PT J AU Kowalewski, RV Menke, S AF Kowalewski, RV Menke, S TI Complementary observables for the determination of vertical bar V-ub vertical bar in inclusive semileptonic B decays SO PHYSICS LETTERS B LA English DT Article ID MASS-SPECTRUM AB The determination of \V-ub\ from inclusive semileptonic B decays is limited by uncertainties in modeling the decay distributions in b --> ulv transitions. The largest uncertainties arise from the limited knowledge of the appropriate b quark mass and Fermi momentum to use in the parameterization of the shape function. This Letter presents a new method in which these shape function parameters are constrained by the same data used to measure \V-ub\. The method requires measurements of the momenta of both the charged lepton and the neutrino in semileptonic B decays. From these quantities two complementary observables can be constructed, one for discriminating between b --> ulv transitions and background and the other for constraining the shape function. Using this technique the uncertainties in \V-ub\ from the shape function may be significantly reduced. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada. Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Univ Victoria, Dept Phys & Astron, POB 3055, Victoria, BC V8W 3P6, Canada. EM kowalews@uvic.ca NR 13 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD AUG 8 PY 2002 VL 541 IS 1-2 BP 29 EP 34 AR PII S0370-2693(02)02181-0 DI 10.1016/S0370-2693(02)02181-0 PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 585AJ UT WOS:000177500700005 ER PT J AU Nozar, M Adams, GS Adams, T Bar-Yam, Z Bishop, JM Bodyagin, VA Brown, DS Cason, NM Chung, SU Cummings, JP Danyo, K Demianov, AI Denisov, SP Dorofeev, V Dowd, JP Eugenio, P Fan, XL Gribushin, AM Hackenburg, RW Hayek, M Hu, J Ivanov, EI Joffe, D Kachaev, I Kern, W King, E Kodolova, OL Korotkikh, VL Kostin, MA Kuhn, J Lipaev, VV LoSecco, JM Lu, M Manak, JJ Napolitano, J Olchanski, C Ostrovidov, AI Pedlar, TK Popov, AV Ryabchikov, DI Sarycheva, LI Seth, KK Shenhav, N Shen, X Shephard, WD Sinev, NB Stienike, DL Suh, JS Taegar, SA Tomaradze, A Vardanyan, IN Weygand, DP White, DB Willutzki, HJ Witkowski, M Yershov, AA AF Nozar, M Adams, GS Adams, T Bar-Yam, Z Bishop, JM Bodyagin, VA Brown, DS Cason, NM Chung, SU Cummings, JP Danyo, K Demianov, AI Denisov, SP Dorofeev, V Dowd, JP Eugenio, P Fan, XL Gribushin, AM Hackenburg, RW Hayek, M Hu, J Ivanov, EI Joffe, D Kachaev, I Kern, W King, E Kodolova, OL Korotkikh, VL Kostin, MA Kuhn, J Lipaev, VV LoSecco, JM Lu, M Manak, JJ Napolitano, J Olchanski, C Ostrovidov, AI Pedlar, TK Popov, AV Ryabchikov, DI Sarycheva, LI Seth, KK Shenhav, N Shen, X Shephard, WD Sinev, NB Stienike, DL Suh, JS Taegar, SA Tomaradze, A Vardanyan, IN Weygand, DP White, DB Willutzki, HJ Witkowski, M Yershov, AA CA Brookhaven E852 Collaboration TI A study of the reaction pi(-)p ->omega pi(-)p at 18 GeV/c: the D and S decay amplitudes for b(1)(1235)->omega pi SO PHYSICS LETTERS B LA English DT Article ID SPIN-PARITY ANALYSIS; QUARK-MODEL; DRIFT CHAMBER; MESON; ANNIHILATION; REST AB The reaction pi(-)p --> omegapi(-)p, omega --> pi(+)pi(-)pi(0) has been studied at 18 GeV/c. The omegapi(-) mass spectrum is found to be dominated by the b(1) (1235). Partial Wave Analysis (PWA) shows that b(1) production is dominated by natural parity exchange. The S-wave and D-wave amplitudes for b(1)(1235) --> omegapi have been determined, and it is found that the amplitude ratio, \D/S\ = 0.269 +/- (0.009)(stat) +/- (0.01)(sys) and the phase difference, phi(D - S) = 10.54degrees +/- (2.4degrees)(stat) +/- (3.9degrees)(sys). (C) 2002 Elsevier Science B.V. All rights reserved. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Rensselaer Polytech Inst, Dept Phys, Troy, NY 12180 USA. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Univ Massachusetts, Dept Phys, N Dartmouth, MA 02747 USA. Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia. Northwestern Univ, Dept Phys, Evanston, IL 60208 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Protvino High Energy Phys Inst, Protvino 142284, Russia. RP Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. EM nozarm@jlab.org RI Demianov, Andrei/E-4565-2012; Vardanyan, Irina/K-7981-2012; Gribushin, Andrei/J-4225-2012 NR 29 TC 14 Z9 14 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD AUG 8 PY 2002 VL 541 IS 1-2 BP 35 EP 44 AR PII S0370-2693(02)02194-9 DI 10.1016/S0370-2693(02)02194-9 PG 10 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 585AJ UT WOS:000177500700006 ER EF